JPH08197654A - Box making machine - Google Patents

Abstract

(57) [Summary] [Purpose] Top plate E, which is continuous with the upper side of gable plate C, and top plate E.
Flap G that is continuously provided on the side of the tongue I, the tongue I that is continuously provided at the other end of the flap G, and the end plate C so that the tongue I can be inserted.
A box making machine for accurately and promptly assembling a paper box having a slit K provided on the lower side of a side plate B orthogonal to the above from a blank sheet state. [Structure] Horizontal rail 5 that pushes flap G downward
2a, a base plate 50a for bending the tongue piece I with respect to the flap G, and a pusher 50 for inserting the tongue piece I into the slit K.
And a first positioning mechanism 40 and a second positioning mechanism 41.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a box making machine for assembling a paper box or the like, and more particularly to a box making machine for automatically assembling a packaging box made of cardboard or cardboard in a blank sheet state.

[0002]

2. Description of the Related Art Conventionally, a corrugated paper box shown in FIG. 9 used for shipping fruits and the like has been assembled manually from the blank sheet state shown in FIG.

This paper box had to be assembled in the following order. First, the flap D is vertically raised with respect to the side plate B, and further, the side plate B and the end plate C are vertically raised with respect to the bottom plate A, and the flap D is superposed on the inner wall surface of the end plate C. Next, the top plate E, which is continuously provided on the upper side of the end plate C, is folded inside the paper box by 90 degrees. Finally, the flaps G that are connected to the left and right sides of the top plate E are connected.
And H are superposed on the outer wall surface of the folding side plate B, and the tongue pieces I and J attached to the outer ends of the flaps G and H, respectively.
To the slits K and L to complete the assembly.

[0004]

In order to assemble this paper box, since the paper thickness of the tongues I and J is substantially equal to the slit width of the slits K and L, the tongues I and J are to the slits K and L. It was necessary to accurately position the tongue pieces I and J for inserting the tongue pieces. That is, if the tongues I and J are not correctly inserted into the slits K and L, the tongues I and J will be broken, and the end surface of the tongue will be damaged, making it impossible to insert the tongues into the slit. There was a problem.

Further, there is a problem that even if the above paper boxes are manually assembled by a skilled person, only about four boxes can be assembled per minute.

In view of the above-mentioned problems, it is an object of the present invention to provide a box-making machine for assembling the above-mentioned paper box accurately and quickly from the state of blank sheets.

[0007]

The box making machine of the present invention comprises a top plate connected to an upper side of a gable plate or a side plate, a flap connected to a side side of the top plate, and an outer end of the flap. A box making machine for assembling a paper box having a tongue piece continuously connected to, and a slit provided on the lower side of the end plate or other end plate orthogonal to the end plate or side plate so that the tongue piece is inserted, A support plate that vertically holds the end plate or side plate from the outer wall side, a horizontal rail that is provided in parallel with the other side plate or end plate that pushes down the flap, and a pedestal plate that bends the tongue piece with respect to the flap. A pusher for inserting the tongue into the slit, and a positioning mechanism for pressing the end surface of the top plate toward the support plate to restrict the insertion position of the tongue.

Further, the box making machine of the present invention is provided with a top plate continuously provided on the upper side of the end plate or the side plate, a flap continuously provided on the side side of the top plate, and an outer end of the flap. A box making machine for assembling a paper box having a tongue piece and a slit provided in the lower side of the gable plate or other side plate or grate plate orthogonal to the gable plate or the side plate so that the tongue piece is inserted. A horizontal rail provided parallel to the other side plate or gable plate, a pedestal plate that bends the tongue piece with respect to the flap, a pusher that inserts the tongue piece into the slit, and the gable plate or side plate. A positioning mechanism for pressing the other side plate or the end plate side to regulate the insertion position of the tongue piece is provided.

It is preferable that the positioning mechanism comprises a rotary actuator or a motor and a pressing plate rotatably supported by a rotary shaft of the rotary actuator or the motor.

Further, it is preferable that the positioning mechanism comprises a slide member that slides above the top plate in a direction orthogonal to the end plate or the side plate, and a suspension plate foldably provided on the slide member.

Further, the suspension plate is rotatably supported by a shaft horizontally mounted on the slide member, and is loosely fitted in a long hole provided in a plate horizontally mounted on the slide member and the long hole. It is preferable that a rod having a fall prevention member for preventing it from falling off is connected to the upper surface of the suspension plate.

The blank sheet feeder for a box making machine of the present invention comprises an upper carry-in port for carrying in blank sheets of a paper box, a storage frame for storing the blank sheets carried in from the carry-in port and horizontally stacked. A first slide stopper member provided on the side wall of the storage frame, a second slide stopper member provided below the first stopper means and provided on the side wall of the storage frame, and the blank sheet to the box making machine. A lower supply port for supplying, a stopper provided at the lower supply port, a detection means provided between the second slide stopper member and the stopper, and the first slide when a detection signal from the detection means is detected. It consists of a stopper and a control panel that sends an operation signal to the second slide stopper.

[0013]

The box making machine of the present invention is provided with a positioning mechanism, and the positioning mechanism presses the end plate or side plate to the other side plate or end plate side, or holds the end plate or side plate vertically from the outer wall side. Press the bearing plate side to regulate the insertion position of the tongue. That is, since the top plate continuously provided on the upper side of the end plate or the side plate is restricted to a predetermined position for assembly by the positioning mechanism, it is continuously connected to the flap continuously provided on the side side of the top plate and the outer end of the flap. The tongue provided is also restricted to a predetermined position for assembly. Therefore, the tongue piece can be accurately positioned when the tongue piece is inserted into the slit.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The box making machine of the present invention will be described in detail below with reference to the accompanying drawings. First, a conceptual description will be given of a process for assembling a paper box by the box making machine of the first embodiment, and then a concrete configuration and an assembling process of the box making machine of the same example will be described. Next, a blank sheet supply device for a box making machine according to the second embodiment will be described.

(Embodiment 1) (Conceptual explanation) FIGS. 2 to 10 are schematic views conceptually showing an assembling process. Blank sheets 1 of a plurality of paper boxes are stacked and stacked in a blank sheet supply unit (not shown) installed on the upper part of the main frame of the box making machine. Among the plurality of stacked blank sheets 1, the bottom blank sheet 1 is locked by a claw-shaped stopper (not shown).

First, the lowermost blank sheet 1 is adsorbed by the vacuum portion 2 (see FIG. 2. Note that in FIG. 2, a part of the blank sheet 1 is cut away to clearly show the vacuum portion 2. It shows.). The vacuum unit 2 is
It is composed of two suction pads 2a, a pad holding plate 2b, a rod 2c mounted on the pad holding plate, and an air cylinder 2d fixed to the body frame. The bottom surface of the bottom plate A is a suction pad 2a
In order to adsorb by suction, the air cylinder 2d is driven to raise the rod 2c to bring the suction pad 2a into contact with the lower surface of the bottom plate A of the blank sheet 1, and then the internal air of the suction pad is vacuumed (not shown). A).

The single blank sheet 1 adsorbed by the vacuum portion 2 drops from the stopper by the descent of the rod 2c by driving the air cylinder 2d, and the rod 2
As c falls, it descends below the blank sheet supply section.

Below the blank sheet supply section, four comb-shaped pipes 3 fixed to the frame of the main body via shelf plates (not shown) are arranged (see FIG. 3). These comb-shaped pipes 3
Are arranged at positions where they interfere with the flap D while the blank sheet 1 is descending, and are erected slightly outward toward the outer side in the longitudinal direction of the blank sheet 1. Each comb-shaped pipe 3 is provided with three horizontal pipes at equal intervals. When the blank sheet 1 starts to descend due to the vacuum portion 2, the three horizontal pipes of each comb-shaped pipe 3 and the flap D interfere with each other one after another. Each comb pipe 3 as above
Are slightly inclined toward the outer side in the longitudinal direction of the blank sheet 1, the three horizontal pipes of each comb-shaped pipe 3 are arranged from the outer side in the longitudinal direction of the blank sheet 1 to the uppermost stage, the middle stage,
They are located in the lowest order. Therefore, the flap D gradually rises vertically to the side plate B by interfering with the horizontal pipes of the uppermost stage, the middle stage, and the lowermost stage in order.

Further, when the blank sheet 1 is lowered by the vacuum portion 2, each side plate B interferes with the guide plate 4 and each end plate C interferes with the roller 5 and is raised with respect to the bottom plate A ( Refer to Fig. 4. In this figure, the guide plate 8 is shown by a chain line in order to clarify the standing state of the side plate B). That is, the two guide plates 4 fixed to the body frame via the guide plate supporting members (not shown) are arranged in parallel with the side plates B at positions where they interfere with the side plates B while the blank sheet 1 is descending. Further, the rollers 5 rotatably supported by roller supporting members (not shown) fixed to the body frame are parallel to the end plates C at positions where they interfere with the end plates C during the lowering of the blank sheet 1, respectively. Are arranged.

Even if each side plate B is raised with respect to the bottom plate A by the guide plate 4, the vertical state of the vertical pipe portion hung from the tip of the horizontal pipe at the bottom of the pipe 3 prevents the flap D from being folded. Maintained. Therefore, flap D
Will be folded inside the end plate C (see FIG. 4).

After the end plate C is folded by the roller 5, the roller 5 contacts the top plates E and F. But,
Since the ruled line between the end plate C and the bottom plate A is already folded, the ruled line between the top plates E and F and the end plate C is not folded, and the end plate C is further folded perpendicularly to the bottom plate A. It will be.

Further, the vacuum portion 2 is lowered, and the blank sheet 1 with the side plates B and C and the flap D raised is placed on the chains 20a and 20b of the two-way chain conveyor (see FIG. 5). At this time, a pair of support plates 21a and 21b are provided on the chains 20a and 20b of the chain conveyor for each chain corresponding to the outer size of the paper box.
The blank sheet 1 that has been started up is loosely inserted between and.

On both sides of the chains 20a and 20b,
A pair of sandwiching portions 6 is provided on the outer side of the side plate B of the blank sheet 1 that has been raised. The sandwiching portions 6 are located below the guide plate 4, respectively. The holding portion 6 is a holding plate 6
a, a rod 6b attached to the holding plate 6a, and an air cylinder 6c fixed to the body frame. When the raised blank sheet 1 is placed on the two chains 20a and 20b, the air cylinder 6c is driven and the rod 6b is driven.
Are stretched, and the holding plate 6a holds the side plate B. As described above, the blank sheet 1 that has been launched has a two-chain chain 2
When the placement on 0a and 20b is completed, the vacuum unit 2 completes the lowering process and stops sucking the internal air of the suction pad 2a of the vacuum unit 2.

Above the chains 20a and 20b, a pair of first slide plates 7a and second slide plates 8a in the form of skis are arranged so as to face each other in a direction parallel to the chains. The first slide plate 7a and the second slide plate 8a slide toward the inside of the raised blank sheet 1 from the outside of the end plate C. A curved portion is provided at the tips of the first slide plate 7a and the second slide plate 8a. The first slide plate 7a has a top plate E, and the second slide plate 8a has a top plate F as a bottom plate A. Fold it in until it is parallel (see Figure 6).

Next, the chain conveyor is driven to move the chains 20a and 20b horizontally in the directions of the arrows shown in FIGS. At the time of the movement, flaps G and H continuously provided on the top plates E and F, and
The tongue pieces I and J attached to the outer ends of the flaps G and H project horizontally from the side plate B to the outside.

A tongue bent portion 9 is provided on both sides of the chains 20a and 20b and close to the ends of the holding plate 6a in the traveling direction of the chains. The tongue bent portion 9 includes a shaft 9b mounted on a side plate (not shown) of the body frame, and the shaft 9b.
A roller 9a that is rotatably supported on the base plate, a support plate 9e that is erected on the shelf plate fixed to the main body frame, and the support plate 9e.
The shaft 9d is fixed to the shaft 9d, and the roller 9c is rotatably supported by the shaft 9d. The roller 9a is arranged above the roller 9c, and the lowermost circumferential surface of the roller 9a is
The flaps G and H horizontally protruding from the side plate B, and
The tongue pieces I and J are arranged so as to be located below the upper surfaces thereof. On the other hand, the roller 9c is arranged at a position where the uppermost circumferential surface of the roller 9c abuts the lower surfaces of the flaps G and H.

When the chain conveyor is driven to move the raised blank sheet 1 horizontally, the flaps H and the tongues J first pass through the tongue-folding portions 9 and then the flaps G and The tongue piece I passes through the tongue piece bending portion 9. When passing through the tongue bending portion 9, the side plate B
The flaps H and G projecting horizontally from are supported by the roller 9c on the lower surface thereof, while the tongues J and I are bent downward by the roller 9a. Therefore, the tongue pieces B and 9 bend the tongue pieces J and I downward with respect to the flaps H and G.

When the raised blank sheet 1 is horizontally conveyed to the predetermined position by the chain conveyor, the chain conveyor stops. Immediately after the stop, the rail 52a is vertically lowered by driving an air cylinder (not shown), and the flaps G and H are folded downward by about 60 degrees (see FIG. 8).

Next, the first slide plate 7a and the second slide plate 8a slide to the initial position and return (FIG. 8 shows the state where the second slide plate 8a returns to the initial position). A first positioning mechanism 40 is provided between the two second slide plates 8a. The first positioning mechanism 40 includes a shaft 40c extending horizontally between the slide plates 8a and a shaft 40c.
a sleeve 40b pivotally supported by c, a suspension plate 40a fixed to the sleeve 40b, a shaft 40d fixed vertically to the upper surface of the suspension plate 40a, and a collar attached to the end of the shaft 40d. A plate 4 horizontally mounted between the bolt 40e and both slide plates 8a and fixed to the upper surfaces of both slide plates 8a.
0f and a long hole 40g bored in the plate 40f, and a shaft 40d is loosely fitted in the long hole 40a (see FIG. 9). The suspension plate 40 is returned by the return of the second slide plate 8a.
The end surface of a presses the upper part of the end plate C. When the end plate C is pressed, the end plate C is pressed against the side edges of the side plates B and is kept perpendicular to the bottom surface A.

When the second slide plate 8a slides from the outside of the end plate C toward the inside of the blank sheet 1 which has been raised, the suspension plate 40a comes into contact with the top plate F and between the second slide plates 8a. Since it is folded up, the suspension plate 40a
Does not collide with the top plate F. Further, when the raised blank sheet 1 is conveyed to a predetermined position by the chain conveyor, the suspension plate 40a comes into contact with the top plate E and is folded between the second slide plates 8a. Does not collide with plate E.

Simultaneously with the return of the second slide plate 8a,
The second positioning mechanism 41 operates to press the end surface of the top plate F,
The top plate F and the gable plate C connected to the top plate F are attached to the support plate 21a.
Press on the side wall of. The second positioning mechanism 41 includes a rotary actuator 41c suspended on a shelf plate (not shown) fixed to a main body frame, a rotary shaft 41b protruding from both sides of the rotary actuator 41c, and a rotary shaft 41b. It consists of a fixed pressing plate 41a. The end plate C pressed against the support plate 21a by the pressing plate 41a is kept perpendicular to the bottom surface A.

The first positioning mechanism 40 and the second positioning mechanism 41, together with the lowering of the rail 52a, accurately position the tongue pieces I and J for inserting the tongue pieces I and J into the slits K and L. To do. That is, the first positioning mechanism 4
0 and the second positioning mechanism 41 ensure the vertical state of both gable plates C. The vertical state of the gable plates C is the same as the positions of the top plates E and F that are respectively connected to the gable plates C, respectively.
The positions of the flaps G and H, which are connected to each other, are accurately determined. When the positions of the flaps G and H are accurately determined, the tongues I and J connected to the outer ends of the flaps G and H are connected.
The position of is necessarily determined to a predetermined position, that is, a position where the slits K and L can be accurately inserted.

On the other hand, the rail 52a is lowered when the rail 5a is lowered.
Not only the horizontal state of the flaps G and H that directly contact the 2a is ensured, but also the horizontal state of the top plates E and F and the tongues I and J that are connected to the flaps G and H are ensured.
Therefore, the tongues I and J are maintained in the horizontal state in addition to the accurate positioning, and can be accurately inserted into the slits K and L.

Next, the pedestal plates 50a of the two folding pedestal parts 50 provided on both sides of the chains 20a and 20b ascend upwardly toward the both side plates B, respectively. The folding pedestal part 50
Is a pedestal plate 50a arranged horizontally and the pedestal plate 50a
5 fixed diagonally downward on the back side of the
0b and an air cylinder 50c fixed to the body frame and provided below the chains 20a and 20b. Base plate 5
The tongue pieces I and J are folded inward (side plate B side) by the rise of 0a. Since the tongue pieces I and J are given a crease by the tongue piece bending portion 9, they are easily folded inward. Note that, in FIG. 8, the descent standby position of the pedestal plate 50a is shown by a chain line.

Next, 2 on each side of the chains 20a and 20b.
Each pusher plate 51 of a total of four pushers 51 provided for each group
a presses flaps G and H, respectively, and inserts tongues I and J into slits K and L, respectively. The pusher 51 includes a vertical pusher plate 51a, a rod 51b fixed to the back side of the pusher plate 51a, and an air cylinder 51c fixed to the main body frame. The tongue pieces I and J are accurately inserted into the slits K and L because the first positioning mechanism 40, the second positioning mechanism 41, and the rail 52a are lowered so that the tongue pieces I and J are not only positioned accurately but also maintained in the horizontal state.

Next, the rail 52a is raised and returned to the initial position, the pressing plate 41a of the second positioning mechanism 41 is reversely rotated and returned to the initial position, and each pedestal plate 50 of the folding pedestal part 50 is returned.
a descends and returns to the initial position, and each pusher plate 51a of the pusher 51 retracts and returns to the initial position. further,
The second slide plate 8a slides to fold the next top plate F of the blank sheet 1 that has been raised. Finally, the chain conveyor is driven to carry out the completed paper box from a carry-out port (not shown). FIG. 10 shows a paper box completed by the above assembling process.

(Specific Structure) The box making machine according to the embodiment will be specifically described below. 11 to 14 are front views of the box making machine showing the steps of assembling the paper box in order, FIG. 15 is a plan view of the box making machine, FIG. 16 is a left side view of the box making machine, and FIGS. FIG. 19 is a right side view of the box making machine showing the step of inserting the tongue piece in order. In the figure, reference numeral 1 indicates a blank sheet or a paper box in the process of assembly.

A blank sheet supply section 15 constituted by a frame 15a is provided on the upper surface of the main body frame 10 constituted by a square pipe. In the blank sheet supply unit 15, the paper boxes 1 in a blank sheet state are stacked. The lower part of the blank sheet supply unit 15 is open to form a blank sheet supply port 15c. Further, claw-shaped stoppers 15b are provided at four locations below the side wall of the frame 15a.

Two metal chain conveyors 20 are horizontally provided along the longitudinal direction of the internal space surrounded by the body frame 10. The chain conveyor 20 includes shafts 28a and 28b supported by bearings 29a and 29b fixed to the main body frame 10.
From pulleys 26a and 26b at both ends fixed to the shafts 28a and 28b, chains 20a and 20b supported by the pulleys 26a and 26b, and a driven pulley 27 fixed to the central part of the shaft 28a. Become. Further, a pair of five bearing plates 21a and 21b, 22a and 22b, 23a and 23b, 24a and 24b, 25a and 25b are provided on the transfer surface of the chain 20a or 20b. The distance between the pair of support plates corresponds to the outer dimension of the paper box 1 in the longitudinal direction. Further, the pair of support plates have upper portions bent outward so as to receive the blank sheet 1 lowered by the vacuum portion 2.

A conveyor drive unit 30 for driving the two chain conveyors 20 is provided immediately below the conveyor shaft 28a. The conveyor drive unit 30 includes a motor 30a, a reduction pulley 30d, the motor 30a and the reduction pulley 30.
The belt 30b stretched between d and the reduction pulley 30
Belt 3 hung between d and the driven pulley 27
It consists of 0c. A sensor (not shown) for detecting the rotation state of the motor 30a is attached to the rotation shaft of the motor 30a.

A vacuum unit 2 is provided directly below the blank sheet supply unit 15 and between the two chain conveyors 20. The vacuum portion 2 is mounted on a square pipe erected from the bottom of the main body frame 10. The vacuum portion 2 includes two rectangular suction pads 2a that suction the bottom surface A of the blank sheet 1, a pad holding plate 2b that holds the suction pads 2a from below, and a vertical direction below the pad holding plate 2b. Two fixed rods 2c and the rods 2c
And an air cylinder 2d for moving up and down. The rod 2
c is a metal pipe, and the internal space of the pipe serves as a ventilation path.

Four comb pipes 3 are provided directly below the blank sheet supply unit 15 and above the chain conveyor 20. The comb-shaped pipes 3 are respectively erected on the side plates 10a mounted on the body frame 10 (see FIG. 15).
The comb-shaped pipes 3 are arranged at positions where they interfere with the flaps D while the blank sheet 1 is descending, and are erected slightly outward toward the outer side in the longitudinal direction of the blank sheet 1. The comb-shaped pipe 3 comprises a support pipe and three horizontal pipes attached at equal intervals. These three horizontal pipes are attached in the order of the uppermost stage, the middle stage, and the lowermost stage from the outer side in the longitudinal direction of the blank sheet 1. Further, the lowermost horizontal pipe has a vertical portion that extends vertically from the tip of the horizontal pipe.

A guide plate 4 is provided just below the blank sheet supply unit 15 and above the chain conveyor 20. The guide plate 4 is a side plate 10a attached to the body frame 10.
Is provided via a guide plate support member 4a. Also,
The guide plate 4 is arranged at a position where it interferes with the side plate B while the blank sheet 1 is descending. This guide plate 4 is a side plate B
Is gradually bent outward to gradually rise.

Two rollers 5 are provided just below the blank sheet supply unit 15 and above the chain conveyor 20. The roller 5 is a support plate 1 fixed to the body frame 10.
0b and 10c are rotatably supported by a roller support member 5a. The rollers 5 are arranged in parallel with the end plates C at positions where they interfere with the end plates C while the blank sheet 1 is descending.

Directly below the blank sheet supply section 15 and on both sides of the same plane as the upper surface of the chain conveyor 20.
The sandwiching portions 6 of the base are arranged so as to face each other. The sandwiching portion 6 includes a sandwiching plate 6a that presses the raised side plate B of the blank sheet 1 from the side, two rods 6b fixed vertically to the back surface of the sandwiching plate 6a, and the rod 6b. It is composed of an air cylinder 6c that moves in the horizontal direction. The air cylinder 6
c is fixed to the upper surface of the shelf plate 10d (see FIG. 15), and the sandwiching plate 6a is bent upward so as not to interfere with the bottom surface A of the blank sheet 1.

The first slide portion 7 and the second slide portion 8 are arranged opposite to the lower surfaces of the support plates 10b and 10c fixed to the main body frame 10, respectively. The first slide part 7 suspends two first slide plates 7a that slide along the extending direction of the chain conveyor 20, two sliders 7b that horizontally move the slide plates 7a, and the slider 7b. It is composed of two rails 7c fixed to the lower surface of the support plate 10b. The second slide portion 8 includes two second slide plates 8a that slide along the extending direction of the chain conveyor 20,
Two sliders 8b for horizontally moving the slide plate 8a
And two rails 8c that suspend the slider 8b and are fixed to the lower surface of the support plate 10c. Sliders 7b and 8
b reciprocates the effective length of the rails 7c and 8c, respectively.
Further, the first slide plate 7a and the second slide plate 8a are provided with a curved portion at their tips in order to gradually fold the top plate E and the top plate F without damaging them.

A first positioning mechanism 40 is provided between the two second slide plates 8a of the second slide portion 8 and in the vicinity of the curved portion of each slide plate. The first positioning mechanism 40 includes a shaft 40c extending horizontally between the slide plates 8a and a shaft 40c.
The sleeve 40b pivotally supported by the c, the suspension plate 40a welded to the sleeve 40b, the connecting rod 40d fixed vertically to the upper surface of the suspension plate 40a, and the support rails 8a above the support rails 8a. Plate 40f placed between
And a long hole 40g perforated in the plate 40f, and a connecting rod 40d loosely fitted in the long hole 40g, which is composed of a flanged bolt 40e attached to an end portion of the connecting rod 40d (Fig. 9).

The range of rotation of the suspension plate 40a is limited by the connecting rod 40d with the flanged bolt 40e attached to the end thereof. That is, the suspension plate 40a is located between the position of the suspension plate 40a shown in FIG. 9 and the position where the end face of the suspension plate 40e is folded in the same plane as the lower surface of the second slide plate 8a in the direction of the arrow shown in FIG. Rotate with.

A tongue bent portion 9 is provided on both sides of the two chains 20a and 20b, which are substantially in the center of the chain conveyor 20 in the longitudinal direction. The tongue bent portion 9 includes a body frame 10
The shaft 9b fixed to the side plate 10a mounted on the
a roller 9a rotatably supported by b, a support plate 9e erected on a shelf plate 10f mounted on the main body frame 10, a shaft 9d fixed to the support plate 9e, and a shaft 9d rotated by the shaft 9d. It is composed of a roller 9c that is freely supported (see FIG. 7). Laura 9
a is disposed above the roller 9c. Further, the roller 9a is arranged such that the lowermost surface of the roller circumferential surface is located below the flaps G and H horizontally protruding from the side plate B and the upper surfaces of the tongues I and J. On the other hand, the roller 9c is arranged at a position where the uppermost surface of the roller circumferential surface is in contact with the lower surfaces of the flaps G and H.

Two folding rail portions 52 are suspended below the support plate 10d. The folding rail portion 52 is a flap G.
And a rail 52a in which H is folded downward, and the rail 52a
A support member 52b for suspending a, a horizontal support member 52c for suspending the support member 52b, two rods 52d standing on the horizontal support member 52c, and an air cylinder for vertically moving the rod 52d. 52e. Rail 52a
Has an end portion on the carry-in side of the paper box 1 being assembled that is bent upward, and the length of the horizontal portion of the rail 52a is such that the flaps G and H can be folded at the same time.
It is longer than the length of the side plate B in the longitudinal direction.

A second positioning mechanism 41 is suspended on the lower surface of the support plate 10c. The second positioning mechanism 41 includes the support plate 1
Rotary actuator 41 suspended on the bottom surface of 0c
c, a rotary shaft 41b protruding from both sides of the rotary actuator 41c, and a pressing plate 41a fixed to the rotary shaft 41b. Rotary actuator 41c
Rotates the pressing plate 41a from the horizontal state by 90 degrees in order to press the end surface of the top plate F, and further reverses it to return the pressing plate 41a to the horizontal position.

Two folding pedestals 50 are provided below the shelf 10e on both sides of the two-strand chains 20a and 20b. The folding pedestal portion 50 is a pedestal plate 50a horizontally arranged.
And a rod 50b fixed obliquely downward on the back side of the base plate 50a, and an air cylinder 50c fixed to the main body frame 10 and provided below the shelf plate 10e. As shown in FIGS. 17 and 18, the pedestal plate 50a moves up and down in an oblique direction toward both side plates of the blank sheet 1 which is raised while maintaining the horizontal state.

On both sides of the two-strand chains 20a and 20b, two pushers 51, two in total, are provided on the outside of each chain on the upper surface of the shelf 10e. The four pushers 5
1 is arranged corresponding to the positions where the tongues I and J are inserted into the slits K and L, respectively. The pusher 51 includes a vertical pusher plate 51a, a rod 51b fixed to the back side of the pusher plate 51a, and an air cylinder 51c fixed to the upper surface of the shelf plate 10e.

(Assembly Process) First, the blank sheets 1 of a plurality of paper boxes are stacked and stacked in the blank sheet supply unit 15 installed on the upper frame 10 of the box making machine. Among the plurality of stacked blank sheets 1, the bottom blank sheet is locked by the claw-shaped stopper 15b (see FIG. 14).

Next, the air cylinder 2d of the vacuum unit 2
Is driven to raise the rod 2c to bring the suction pad 2a into contact with the lower surface of the bottom plate A of the blank sheet 1. Further, the suction pad sucks the internal air of the suction pad,
The bottom surface of the bottom plate A of the bottom blank sheet 1 is adsorbed.

The blank sheet 1 adsorbed by the vacuum portion 2 is rod 2c driven by the air cylinder 2d.
Is dropped from the stopper 15b to lower the rod 2
Start descending with c.

When the blank sheet 1 starts to descend by the vacuum portion 2, the three horizontal pipes of each comb-shaped pipe 3 and the flap D interfere with each other one after another. Since each comb-shaped pipe 3 is slightly inclined toward the outer side in the longitudinal direction of the blank sheet 1 as described above, the three horizontal pipes of each comb-shaped pipe 7 are arranged from the outer side in the longitudinal direction of the blank sheet 1 to the uppermost stage.
They are located in the order of middle row and bottom row. Therefore, flap D
Is gradually raised vertically to the side plate B by interfering with the horizontal pipes of the uppermost stage, the middle stage and the lowermost stage in order.

When the blank sheet 1 is further lowered by the vacuum portion 2, each side plate B interferes with the guide plate 4 and each end plate C interferes with the roller 5 and is raised with respect to the bottom plate A (Fig. 11). Even if each side plate B is raised by the guide plate 4 with respect to the bottom plate A, the folded state of the flap D is maintained by the vertical portion vertically extending from the tip of the lowermost horizontal pipe of the pipe 3. Therefore, the flap D is folded inside the end plate C (see FIG. 4).

After the end plate C is folded by the roller 5,
The roller 5 contacts the top plates E and F. However, since the ruled line between the end plate C and the bottom plate A is already folded, the ruled line between the top plates E and F and the end plate C is not folded, and the end plate C is further folded with respect to the bottom plate A. It will be.

Further, the vacuum portion 2 sucking the blank sheet 1 descends, and the blank sheet 1 having the side plates B and C and the flap D raised is placed on the two-row chain conveyor 20 (see FIG. 12). ). At this time, the raised blank sheet 1 is loosely inserted between the pair of support plates 21a and 21b provided for each chain.

When the raised blank sheet 1 is placed on the two chains 20a and 20b, the air cylinder 6c is driven, the rod 6b is extended, and the side plate B is held by the holding plate 6a. As described above, when the started blank sheet 1 completes the placement on the two chains 20a and 20b, the vacuum unit 2 completes the lowering process and the inside of the suction pad 2a of the vacuum unit 2 is completed. Stop aspirating air.

Next, the first slide plate 7a and the second slide plate 8a are slid toward the inside of the raised blank sheet 1 from the outside of the end plate C (see FIG. 13). The first slide plate 7a folds the top plate E, and the second slide plate 8a folds the top plate F until it becomes parallel to the bottom plate A.

Next, the chain conveyor 20 is driven to move the chains 20a and 20b toward the carry-out port 55. When moving, flaps G are continuously provided on the top plates E and F.
And H, and the tongues I and J attached to the flaps G and H horizontally project outward from the side plate B.

When the raised blank sheet 1 moves, the flap H and the tongue J first pass through the tongue bending section 9 and then the flap G and the tongue I move the tongue bending section 9 during the movement. Pass through. The dashed line in FIG. 17 shows the flap and the tongue as it passes through the tongue fold. The flaps H and G that horizontally protrude from the side plate B when passing through the tongue bent portion 9 have rollers 9c on their lower surfaces.
The tongues J and I are bent downward by the roller 9a. Therefore, by the tongue bent portion 9,
The tongues J and I are bent downward with respect to the flaps H and G.

In order to insert the tongue piece of the raised blank sheet 1 into the slit, the blank sheet 1 is conveyed by the chain conveyor 20 to just below the support plate 10c. When the blank sheet 1 is conveyed to a predetermined position, the chain conveyor 20 stops. That is, the blank sheet 1 is placed at a predetermined position.
When the paper is conveyed, a sensor (not shown) detects it and sends a detection signal to a control board (not shown), and the control board causes the drive unit 3 to move.
The motor 30a of 0 is stopped. Immediately after the chain conveyor is stopped, the rail 52a is vertically lowered by driving the air cylinder 52e to fold the flaps G and H downward about 60 degrees.

Next, the first slide plate 7a and the second slide plate 8a slide back to the initial position and return (see FIG. 1).
4). The suspension plate 40 is returned by the return of the second slide plate 8a.
The end surface of a presses the upper part of the end plate C. Wife plate C is both side plates B
Since it is pressed against the side edge of, it is kept perpendicular to the bottom surface A.

When the second slide plate 8a slides from the outer side of the end plate C toward the inner side of the raised blank sheet 1, the suspension plate 40a comes into contact with the top plate F and between the second slide plates 8a. Since it is folded up, the suspension plate 40a
Does not collide with the top plate F. Further, when the raised blank sheet 1 is conveyed to a predetermined position by the chain conveyor, the suspension plate 40a comes into contact with the top plate E and is folded between the second slide plates 8a. Does not collide with plate E.

Simultaneously with the return of the second slide plate 8a,
The second positioning mechanism 41 operates to press the end surface of the top plate F,
The top plate F and the end plate C connected to the top plate F are pressed against the side walls of the two support plates 21a (see FIG. 14). The end plate C pressed against the support plate 21a by the pressing plate 41a of the second positioning mechanism 41 is kept perpendicular to the bottom surface A.

The first positioning mechanism 40 and the second positioning mechanism 41, together with the lowering of the rail 52a, accurately position the tongue pieces I and J for inserting the tongue pieces I and J into the slits K and L. To do. That is, the first positioning mechanism 4
0 and the second positioning mechanism 41 ensure the vertical state of both gable plates C. The vertical state of the gable plates C is the same as the positions of the top plates E and F that are respectively connected to the gable plates C, respectively.
The positions of the flaps G and H, which are connected to each other, are accurately determined. When the positions of the flaps G and H are accurately determined, the positions of the tongues I and J connected to the flaps G and H are set to predetermined positions, that is, positions where the slits K and L can be accurately inserted. Inevitably decided.

On the other hand, the rail 52a is lowered when the rail 5a
Not only the horizontal state of the flaps G and H that directly contact the 2a is ensured, but also the horizontal state of the top plates E and F and the tongues I and J that are connected to the flaps G and H are ensured.
Therefore, the tongues I and J are maintained in the horizontal state in addition to the accurate positioning, and can be accurately inserted into the slits K and L.

Next, the pedestal plates 50a of the two folding pedestal parts 50 provided on both sides of the chains 20a and 20b are raised obliquely upward toward the both side plates B (FIGS. 17 and 18).
reference). The tongue pieces I and J are folded inward (side plate B side) by the rise of the base plate 50a. Since the tongue pieces I and J are given a crease by the tongue piece bending portion 9, they are easily folded inward.

Next, two chains are provided on both sides of the chains 20a and 20b.
Each pusher plate 51 of a total of four pushers 51 provided for each group
a presses the flaps G and H, respectively, and inserts the tongue pieces I and J into the slits K and L, respectively (see FIG. 19). The tongue pieces I and J include a first positioning mechanism 40 and a second positioning mechanism 41.
Since the rail 52a and the rail 52a are lowered, the horizontal state is maintained in addition to the accurate positioning, so that the slits K and L are accurately inserted.

Next, the rail 52a is raised and returned to the initial position, the pressing plate 41a of the second positioning mechanism 41 is reversely rotated and returned to the initial position, and each pedestal plate 50 of the folding pedestal part 50 is returned.
a descends and returns to the initial position, and each pusher plate 51a of the pusher 51 retracts and returns to the initial position. further,
The second slide plate 8a slides to fold the next top plate F of the blank sheet 1 that has been raised. Finally, the chain conveyor is driven to carry out the completed paper box from the carry-out port 55.

In this embodiment, a first positioning mechanism 40 and a second positioning mechanism 41 are provided respectively. However, both positioning mechanisms are compatible. Therefore, both of the two positioning mechanisms may be the first positioning mechanism (or the second positioning mechanism), and the second positioning mechanism may be provided at the position where the first positioning mechanism 40 is provided in the present embodiment. The first positioning mechanism may be arranged at the position where the second positioning mechanism 41 in this embodiment is arranged.

As described above, the first positioning mechanism 40 and the second positioning mechanism 41 are compatible with each other, but in the present embodiment, the first positioning mechanism 40 is replaced by the two second slides of the second slide portion 8. Since it is provided between the plates 8a, the second slide member 8 functions as a holding member for the first positioning mechanism 40. Therefore, a member for holding only the first positioning mechanism is not necessary, the number of parts can be reduced, and it contributes to downsizing of the entire box making machine.

(Embodiment 2) In the box making machine of Embodiment 1 described above, the blank sheet 1 is fed from the blank sheet feeding section 15 provided on the upper surface of the main body frame 10. However, when the stacked blank sheets 1 absorb moisture due to high humidity during the rainy season and the like, and the weight increases, the weight cannot be supported by the stopper 15 and the stacked blank sheets 1 cannot be stacked. It may drop from 15.

The blank sheet supply unit for a box making machine according to the second embodiment has first and second slide stopper portions, and regulates the number of blank sheets locked by the slide stopper portions. Prevent the blank sheet from falling out of the supply section.

20 to 24 are front views of the blank sheet supply unit for the box making machine of this embodiment. In the drawing, the front storage frame wall is omitted to show the storage state of the blank sheet. The blank sheet supply unit 60 for the box making machine is provided on the upper surface of the main body frame 10 of the box making machine, as in the first embodiment. A carry-in port 6 for carrying the blank sheet 1 into the upper portion of the storage frame 63 of the blank sheet supply unit 60.
1 and a supply port 62 for supplying the blank sheet 1 to the box making machine main body at the bottom of the storage frame 63. Further, claw-shaped stoppers 64 are provided at four locations below the side wall of the storage frame 63. 20 to 24, only two stoppers 64 on the front side are shown.

Support plates 65 are provided on the side walls of the storage frame 63, respectively.
the first slide stopper portion 65 via the d, and the second slide stopper portion 66 via the support plate 66d.
Wear one by one. The second slide stopper portion 65 is arranged above the stopper 64 in order to regulate the number of blank sheets that can be supported by the stopper 64.
The distance between the stopper 64 and the second slide stopper 66 corresponds to the stacking height of the blank sheets stacked in a range where the blank sheets are not dropped by the stopper 64. Further, the first slide stopper portion is
It is arranged above the slide stopper 66.

The first slide stopper portion 65 has an L-shaped slide plate 65c, a rod 65b fixed to the back side of the slide plate 65c, and the rod 65b driven to be fixed to the upper surface of the support plate 65d. Air cylinder 65
It consists of a. In addition, the second slide stopper portion 66
Is an L-shaped slide plate 66c, and the slide plate 66
a rod 66b fixed to the back side of c and the rod 66b
And an air cylinder 66a fixed to the upper surface of the support plate 66d.

Next, the operation sequence of the blank sheet feeder 60 for the box making machine of this embodiment will be described with reference to FIGS. First, the blank sheet 1 is carried in through the carry-in port 61. At this time, the air cylinder 66a of the second slide stopper 66 is driven by a control panel (not shown), the rod 66b extends, and the slide plate 66c projects from the inner wall surface of the storage frame 63 to support the blank sheet. To do. On the other hand, the first slide stopper portion 65 is not driven, and the slide plate 65c stands by outside the outer wall surface of the storage frame 63 (see FIG. 20).

Next, after the loading of the blank sheet 1 is completed, the above-mentioned control panel is stopped by a sensor (not shown) by the stopper 6
4. Detect that no blank sheet is being fed on top. In such a state, the control panel cannot send a box making operation start signal to the box making machine body. The control panel is an air cylinder 65a of the first slide stopper portion 65.
Is driven, the rod 65b is extended, and the slide plate 65c is projected from the inner wall surface of the storage frame 63. Slide plate 65c
The blank sheets 1 stacked due to the protrusion of No. 2 are divided into a stacked blank sheet M portion supported by the second slide stopper portion 66 and a stacked blank sheet N portion supported by the first slide stopper portion 65. (See FIG. 21).

Next, the control panel drives the air cylinder 66a of the second slide stopper portion 66, contracts the rod 66b, and pulls the slide plate 66c out of the outer wall surface of the storage frame 63. By this step, the stacked blank sheet M portion supported by the second slide stopper portion 66 falls onto the stopper 64 (see FIG. 22). Since the stacked blank sheets M are stacked by the stopper 64 within the range in which the blank sheets do not fall off, the stopper 6
It does not fall from 4. Further, the sensor detects that a blank sheet is supplied on the stopper 64,
By transmitting the sensing signal to the control panel, the control panel is in a state capable of transmitting a box making operation start signal to the box making machine body.

Next, the control panel drives the air cylinder 66a of the second slide stopper portion 66, extends the rod 66b, and causes the slide plate 66c to project from the inner wall surface of the storage frame 63 (see FIG. 23).

Next, the control panel drives the air cylinder 65a of the first slide stopper portion 65, contracts the rod 65b, and pulls the slide plate 65c out of the outer wall surface of the storage frame 63. In the step, the stacked blank sheet N portion supported by the first slide stopper portion 65 is the second
The slide stopper 66 falls on the slide plate 66c (see FIG. 24). In this state, the blank sheet can be carried into the storage frame 63 from the carry-in port 61.

Next, the blank sheets in the stacked blank sheet M portion are supplied from the supply port 62 to the box making machine main body,
When the blank sheet 1 is completely removed from the stopper 64, the sensor sends a detection signal to the control panel. The control panel operates the first slide stopper portion 65 to further divide the stacked blank sheet portion N into two, and
To the steps shown in FIG. 24 are repeated.

The blank sheet supply unit according to the second embodiment can regulate the number of blank sheets held by the stoppers and prevent the blank sheets from falling out of the blank sheet supply unit.

[0088]

As described above, the present invention is provided with the first positioning mechanism, the second positioning mechanism, etc., so that the tongue pieces I and J for inserting the tongue pieces I and J into the slits K and L can be accurately positioned. Since it is possible to perform accurate positioning, it is possible to accurately assemble a blank sheet having the tongue piece by a box making machine. Further, the box making machine of the present invention automatically assembles the paper boxes simply by stacking blank sheets on the blank sheet feeding section, and since all the assembling is quickly performed by the machine, the number of assembled units per unit time Has increased dramatically compared to the Tesumi team. Further, the blank sheet feeding device for a box making machine of the present invention, even if a large amount of blank sheets are stored in the storage frame, the weight of the blank sheets does not cause the blank sheets to fall off the stopper, and a stable supply of blank sheets is possible. It will be possible.

[Brief description of drawings]

FIG. 1 is a development view of a blank sheet of a paper box assembled by a box making machine according to a first embodiment of the present invention.

FIG. 2 is a schematic view schematically showing an assembling process by the box making machine according to the first embodiment, showing a state in which the lower surface of the bottom surface A of the blank sheet 1 is adsorbed by the vacuum portion 2.

FIG. 3 is a schematic view showing an outline of an assembling process by the box making machine of Example 1, showing a state in which a flap D of a blank sheet 1 is raised by a comb pipe 3.

FIG. 4 is a schematic view showing an outline of an assembling process by the box making machine of Example 1, showing a state in which a side plate B of a blank sheet 1 is raised by a guide plate 4 and a corrugated plate C is raised by a roller 5. .

FIG. 5 is a schematic view showing an outline of an assembling process by the box making machine of the first embodiment, in which the end plate C of the blank sheet 1 and the support plate 2 are provided.
1a shows a state in which the side plate B is held by the holding portion.

FIG. 6 is a schematic view schematically showing an assembling process by the box making machine of the first embodiment, showing a state in which the top plates E and F of the blank sheet 1 are folded by the first slide plate 7a and the second slide plate 8a. Show.

FIG. 7 is a schematic view schematically showing an assembling process by the box making machine according to the first embodiment, showing a tongue bending portion for giving a folding habit to the tongue J of the blank sheet 1.

FIG. 8 is a schematic view schematically showing an assembling process by the box making machine of the first embodiment, showing a process of inserting the tongue pieces I and J of the blank sheet 1 into the slits K and L.

FIG. 9 is an explanatory diagram showing a configuration of a first positioning mechanism 40 mounted on a second slide plate 8a.

FIG. 10 is a perspective view showing an assembled state of a paper box assembled by the box making machine of the first embodiment.

11 is a front view of the box making machine according to the example of Example 1, showing a state in which the side plate B of the blank sheet 1 is raised by the guide plate 4 and the end plate C is raised by the roller 5. FIG.

12 is a front view of the box making machine of FIG. 11, showing a state in which the end plate C of the blank sheet 1 is held by the support plates 21a and 21b, and the side plate B is held by the sandwiching portion.

FIG. 13 is a front view of the box making machine of FIG. 11, showing a state in which the top plates E and F of the blank sheet 1 are folded by the first slide portion 7 and the second slide portion 8.

14 is a front view of the box making machine of FIG. 11, showing a state in which the end surface of the top plate F of the blank sheet 1 is pressed by the second positioning mechanism 41 and the outer wall of the end plate C is pressed by the first positioning mechanism 40. FIG. Indicates.

FIG. 15 is a plan view of the box making machine of FIG. 11, in which a part of the blank sheet 1 housed in the blank sheet supply unit and a frame 15a of the blank sheet supply unit are omitted.

16 is a left side view of the box making machine of FIG. 11. FIG.

17 is a right side view of the box making machine of FIG. 14, showing a state in which a flap H is folded into a top plate F of the blank sheet 1. FIG.

FIG. 18 is a right side view of the box making machine of FIG. 14, showing a state in which the tongue piece J of the blank sheet 1 is folded by the folding pedestal portion 50.

19 is a right side view of the box making machine of FIG. 14, showing a state in which the tongue piece J of the blank sheet 1 is inserted into the slit L by the pusher 51. FIG.

FIG. 20 is a front view of a blank sheet supply unit for a box making machine according to a second embodiment of the present invention.

FIG. 21 is a front view of a blank sheet supply unit for a box making machine of Example 2, showing an operating state of a first slide stopper unit 65.

FIG. 22 is a front view of a blank sheet supply unit for a box making machine according to a second embodiment, showing an operating state of a second slide stopper unit 66.

FIG. 23 is a front view of a blank sheet supply unit for a box making machine of Example 2, showing an operating state of a second slide stopper unit 66.

FIG. 24 is a front view of a blank sheet supply unit for a box making machine of Example 2, showing an operating state of a first slide stopper unit 65.

[Explanation of symbols]

 A bottom plate B side plate C gable plate D flap E, F top plate G, H flap I, J tongue K, L slit 1 blank sheet 2 vacuum part 2a suction pad 2b pad holding material 2c rod 2d air cylinder 3 comb pipe 4 guide plate 4a Guide plate support member 5 Roller 5a Roller support member 6 Clamping part 6a Clamping plate 6b Rod 6c Air cylinder 7 1st slide part 7a 1st slide plate 7b Slider 7c Rail 8 2nd slider part 8a 2nd slide plate 8b Slider 8c Rail 9 Tongue bent portion 9a Roller 9b Shaft 9c Roller 9d Shaft 9e Support plate 10 Main body frame 10a Side plate 10b Support plate 10c Support plate 10d Support plate 10e Shelf plate 10f Shelf plate 15 Blank sheet supply unit 15a Frame 15b Stopper 20c 15c Conveyor 20a 20b chains 21a, 21b bearing plates 22a, 22b bearing plates 23a, 23b bearing plates 24a, 24b bearing plates 25a, 25b bearing plates 26a, 26b pulleys 27 driven pulleys 28a, 28b shafts 29a, 29b bearings 30 conveyor drive unit 30b 30a , 30c Belt 30d Reduction pulley 40 First positioning mechanism 40a Suspension plate 40b Sleeve 40c Shaft 40c Link rod 40e Collar bolt 40f Plate 40g Long hole 41 Second positioning mechanism 41a Press plate 41b Rotation shaft 41c Rotary actuator 50 Folding base 50a Plate 50b Rod 50c Air cylinder 51 Pusher 51a Pusher Plate 51b Rod 51c Air cylinder 52 Folding rail part 52a Rail 52b Support member 52c Horizontal support member 52d Lock 52e Air cylinder 55 Outgoing port 60 Blank sheet supply section 61 Inlet port 62 Supply port 63 Storage frame 64 Stopper 65 First slide stopper section 65a Air cylinder 65b Rod 65c Sliding plate 65d Support plate 66 Second slide stopper section 66a Air cylinder 66b Rod 66c slide plate 66d support plate

Claims (6)

[Claims] 1. A top plate connected to an upper side of a gable plate or a side plate, a flap connected to a side edge of the top plate, a tongue piece connected to an outer end of the flap, and the tongue piece. A box making machine for assembling a paper box having a side plate or a side plate and a slit provided on the lower side of the side plate orthogonal to the end plate or the side plate so that A support plate, a horizontal rail that is parallel to the other side plate or gable plate that pushes down the flap, a pedestal plate that bends the tongue piece with respect to the flap, and a pusher that inserts the tongue piece into the slit. And a positioning mechanism that presses an end surface of the top plate toward the support plate to restrict an insertion position of the tongue piece. 2. A top plate connected to an upper side of a gable plate or a side plate, a flap connected to a side of the top plate, a tongue piece connected to an outer end of the flap, and a tongue piece. A box making machine for assembling a paper box having a side plate or a side plate or a slit provided on the lower side of the side plate orthogonal to the side plate or the side plate so that the other side plate or the side plate is pushed down. A horizontal rail provided in parallel with the base plate, a pedestal plate that bends the tongue piece with respect to the flap, a pusher that inserts the tongue piece into the slit, and presses the end plate or side plate toward the other side plate or end plate side. A box making machine, comprising: a positioning mechanism that regulates the insertion position of the tongue piece. 3. The manufacturing method according to claim 1, wherein the positioning mechanism includes a rotary actuator or a motor, and a pressing plate rotatably supported by a rotary shaft of the rotary actuator or the motor. Box machine. 4. The positioning mechanism comprises a slide member that slides above the top plate in a direction orthogonal to the end plate or the side plate, and a suspension plate foldably provided on the slide member. The box making machine according to any one of Item 2. 5. The suspension plate is rotatably supported by a shaft horizontally mounted on the slide member, and is loosely fitted in a long hole provided in a plate horizontally mounted on the slide member and the long hole. 5. A rod having an end preventing member for preventing the cap from falling off is connected to the upper surface of the suspension plate.
Box making machine described. 6. An upper carry-in port for carrying in a blank sheet of a paper box, a storage frame for storing the horizontally stacked blank sheets carried in from the carry-in port, and a first slide provided on a side wall of the storage frame. A stopper member, a second slide stopper member located below the first stopper means and provided on the side wall of the storage frame, a lower supply port for supplying the blank sheet to the box making machine, and a lower supply port. And a detection means provided between the second slide stopper member and the stopper, and an operation signal to the first slide stopper and the second slide stopper when a detection signal from the detection means is detected. Blank sheet feeding device for box making machine consisting of feeding control panel.