JPH0314683B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Application Field) The present invention is a novel automatic packaging method in which a large number of laminated sheets of paper or other rectangular parallelepiped objects to be packaged are wrapped in wrapping paper, and the protruding pieces of the wrapping paper are folded and overlapped. Regarding equipment.

(Prior art) The present inventor has published Japanese Patent Publication No. 57-40006
(filed on May 19), we proposed a packaging device that automatically wraps rectangular parallelepiped items. This packaging device stacks wrapping paper and items to be packaged on a table that can be raised and lowered, and as the table lowers, the front and back of the wrapping paper are raised up, and the fingers are moved back and forth to automatically remove the protruding pieces of the wrapping paper. The main purpose of this document is to fold it into two parts. This packaging device had the notable advantages of a compact structure and the ability to be easily mass-produced by one worker, and subsequently became widely popular.

(Problems to be Solved by the Invention) However, in the above-mentioned device, the wrapping paper is automatically folded, but the wrapping paper and the items to be packaged are set on the table manually by the worker. This requires considerable time and effort, and users have strongly desired at least automation of wrapping paper supply.

The object of the present invention was made in view of the above,
The wrapping paper is fed out, the table is raised and lowered, and the protruding pieces of the wrapping paper are folded by the same source, and an appropriate time program is set for the lifting of the table through mechanical interlocking means including a cam etc. The aim is to meet the above requirements by making automatic supply possible.

(Means and Embodiments for Solving Problems) The structure of the present invention for achieving the above object will be explained based on the attached embodiment diagrams. Fig. 1 is a perspective view showing an embodiment of the packaging device of the present invention, Fig. 2 is a vertical sectional view taken along the line - - of Fig. 1, Fig. 3 A, B, C and Fig. 4 A, B, C are the same. A schematic diagram showing the operating state of the device; FIG. 5 is a vertical sectional view taken along the line -- in FIG. 4 (a); FIG. A perspective view, FIG. 8 is an enlarged view of the line in FIG. 2, FIG. 9 is an enlarged view of the line in FIG.
The figure is an enlarged view of the lined part in FIG. 2. That is, the packaging apparatus of the present invention takes an approximately "L"-shaped packaging work path vertically downward and horizontally forward, and when the table 3 A rectangular parallelepiped-shaped packaged object A is stacked on top of the wrapping paper B sent from the wrapping paper stacking and feeding device 2, and while the table 3 is lowered and reaches the bottom dead center, the vertical work path is The front and rear parts of the wrapping paper B are raised along the front and rear sides of the article to be packaged A by the paper piece raising internal means 53, 54, and 41 provided at the front and rear, and the front _and rear parts are raised up. The packaged product in the above state on the table 3 is formed by a finger member 4 which forms a side upright piece B ₁ and is reciprocated horizontally back and forth from the rear part to the front part of the table 3 at the bottom dead center position. The object A and the wrapping paper B are pushed out toward the fixed finger 5 at the forward end of the reciprocating end of the finger member 4, and these members 4 and 5 move the upright pieces B ₁ and B ₂ of the object A to be packaged. In a packaging device that folds the top surface and both left and right sides, the elevating table 3 includes a drive source member 9 mounted on the machine base so as to reciprocate in the front and back horizontal directions.
3, the member 93 is driven upward by the horizontal vertical movement conversion means 952, and the finger member 4 is driven by the drive source member 93 in a linear motion relationship, and the The paper stacking and feeding device 2 includes a stacking table 21 whose position is adjusted so that the topmost wrapping paper B is always at the same level behind the table 3 at the top dead center position, and a drive source that comes into contact with the topmost wrapping paper B. In the backward movement process of the member 93, the wrapping paper B is fed out onto the table 3 by being moved forward through the direction reversing means 221, 971, 981, 982 which act at almost the same timing as the elevating table. It is characterized in that it is composed of a member 22.

In the figure, each of the above-mentioned constituent members is installed on a pedestal F, the latter half of which is the part where the article to be packaged A is sent out and the wrapping paper B stacked and fed out, and the center part is the part where the article to be packaged A is fed out and the wrapping paper B is laminated and fed out.
The first half of the wrapping paper B is folded and sealed with adhesive tape.
Further, the lower half of the frame F is equipped with a driving means 6 for performing the feeding operation of the feeding device 2, the vertical movement of the table 3, and the back and forth reciprocating movement of the finger member 4.

The delivery table 1 for sending out the packaged item A is the first one.
As shown in FIGS. 1 and 2, it is removably placed on the upper surface of the rear half of the frame F, and a space 11 for storing compressed air is formed on the back surface of the platform F. When installed in the frame F, the
The air passage F ₁ is connected to a ventilation passage F ₁ in the frame, and compressed air is supplied to this ventilation passage F 1 from an air supply pump F ₂ . A plurality of ball valves 12 for controlling the discharge of the compressed air stored in the space 11 are provided on the surface of the delivery table 1, and the ball valves 12 are connected to a valve passage 120 as shown in FIG.
A ball 122 is always loaded in an upwardly biased state by a compression spring 121, and the ball 1
The upper part of the valve 22 projects from the surface of the delivery table 1 and is engaged with the valve seat 123, thereby preventing discharge of compressed air. In addition, a valve 13 for discharging compressed air forward is provided at the center of the front end of the delivery table 1, as shown in FIG.
3 consists of a valve passage 130 and a valve body 131;
The valve body 131 is pivoted 132 on the side wall of the valve passage 130, and normally closes the valve passage 130 by its own weight, and when the object A hits the tip protruding above the delivery table 1, it pivots on the pivot point 132 as a fulcrum. The valve passage 13 rotates as
0 is configured to be open. This valve 13 and the large number of ball valves 12... control the discharge of the compressed air stored in the space portion 11 provided jointly with these valves.

The stacking and feeding device 2 for wrapping paper B is the feeding table 1 mentioned above.
A stacking table 21 which is disposed at the bottom of the screen and whose vertical position can be adjusted freely and stacks a large number of wrapping papers B, and a feeding member 22 which feeds out the stacked wrapping papers B one by one from the top.
and a delivery roll 23 for delivering the delivered wrapping paper B onto the table 3. The stacking table 21 is arranged downwardly toward the rear, and its front end is oriented near the delivery roll 23. The stacking table 21 includes a screw shaft 211, gears 212, 213, and a motor 21.
4, the vertical position can be adjusted freely, and when starting work, it is lowered so that a large number of wrapping papers B can be inserted and set from the side. Feeding member 2
2, a rail 220 attached horizontally to the side frame of the pedestal F, as shown in FIG.
0 so as to be slidable back and forth, and has rollers 221 (inclined cam surface 971, upper inclined cam surface 98) at the bottom.
1 and roller 982, forming a direction reversing means)
a compression spring 223 that always elastically urges the base 222 backward;
An arm 224 extends from the base 222 to the center of the wrapping paper B on the stacking table 21, and the arm 22
4 and a paper presser 225 provided at the tip.
The paper presser 225 is pivoted to the tip of the arm 224 so as to be able to swing up and down, and its own weight always holds the wrapping paper B.
A roller 226 that presses the surface of the table 3 and allows rotation in only one direction is attached to the contact portion with the wrapping paper B, while the base body 222 receives the driving force of the driving means 9 to be described later to move the table 3 When the table 3 goes up, it slides forward along the rail 220, and when the table 3 goes down, it retreats along the rail 220 due to the restoring elasticity of the compression spring 223. The delivery roll 23 is the delivery member 2
2 pinches the front end of the wrapping paper B that has been slightly fed out, and the rotational driving force of the wrapping paper B is used to send the wrapping paper B all at once onto the rising table 3.

The elevating table 3 includes two vertical slide rods 31, which are held vertically slidably with respect to an intermediate base _F0 .
The block 32 is supported by the slide rods 31, 31, and fixed jointly to the lower ends of the slide rods 31, 31. The block 32 receives the driving force of the drive means 9, which will be described later, to drive the block 32 vertically and reciprocally, and receives the wrapping paper B during its ascent. The time program is set so that when it reaches the top dead center, it further receives the stacked objects A and descends, and stops at the bottom dead center while the finger member 4 reciprocates back and forth above it. There is. Furthermore, a recess 30 is formed on the surface of the table 3 at a portion where the compressed air blown out from the valve 13 of the delivery table 1 hits.

The finger member 4 includes a horizontal finger plate 41 (together with a vertical fixing plate 53 and a restraining plate 54, forming an internal means for raising paper strips), a push plate 42 perpendicular to the rear edge of the plate 41, and It consists of a pair of fingers 43, 43 fixed on both the left and right sides of the push plate 42 at an interval approximately equal to the left and right width of the article to be packaged A. At the front end of the finger plate 41, an elastic rubber piece 411 is attached When the finger member 41 moves forward and tries to push the packaged object A forward together with the wrapping paper B, the rear side of the wrapping paper B receives contact resistance from the rubber piece 411 and moves forward. It is designed so that it can be pulled. The finger member 4 is reciprocated back and forth by a driving means 9 in conjunction with the elevating table 3.

In addition, the fixed finger 5 is the finger member 4
The top plate 51 and wrapping paper folding near the reciprocating end position of
A pair of fingers 43 and 43 are fixedly disposed between the discharge table 52 in opposing relation. Almost directly above the rear end of this top plate 51, as shown in FIGS.
A restraining plate 54 that can be freely tilted back and forth is arranged close to each other in the front and back, and the restraining plate 54 normally stands up due to the restoring elasticity of the compression spring 55, and is compressed via the operating rod 56 when the finger member 4 moves back. The upper end of the spring 55 is configured to tilt forward in response to a pressing force against the elasticity of the spring 55. In addition, the back surface of the folding/discharging table 52 is used as a storage box 520 for compressed air, and compressed air is supplied from the air supply pump _F2 , and a storage box 520 is provided on the panel surface of the folding/discharging table 52. Numerous small holes 52 that communicate
1... has been established. Furthermore, a hollow 511 is formed approximately in the center of the top plate 51, and this hollow part 511 is used as a part for fixing the folded upright pieces B ₁ and B ₂ with adhesive tape. An elastic rubber sheet 57 is suspended from the front end, and when the article to be packaged A passes under the top plate 51 together with the wrapping paper B, the front side of the wrapping paper B is pulled backward due to the contact resistance of this rubber sheet 57. It is designed to be folded in a stretched state.

The folding pieces 6, 7, 8 are attached to the finger member 4.
The folded paper pieces B ₃ and B ₄ which are folded by the fixed fingers 5 and protrude from the left and right sides of the packaged article A are successively folded up and down under the pushing action of the finger members 4. As shown in FIGS. 4 and 5, the folding piece 6 has a lower side 6 that slopes forward and downward.
11 and a guide plate 6 fixedly installed inside the block body 61 and extending forward.
2 are vertically disposed on the left and right sides of the top plate 51, and a notch 612 is formed in the lower side 611 so as to gradually reduce in size from the inside along the inclination direction. Further, the folding piece 7 has an upper side 71 which is inclined forward and upward as shown in FIGS. 4 and 6.
A pair of folding block bodies 71 having a shape of 1 are vertically arranged on the left and right sides of the folding/discharging platform 52, and the upper side 711 has a notch that gradually reduces in size from the inside along the inclination direction as described above. A portion 712 is formed. Furthermore, the folding pieces 8 are plate-like bodies with a hook-shaped cross section, and are erected in pairs on the front left and right sides of the folding/discharging table 52 in a pair-to-face relationship, and the opposing horizontal pressers 81, 81 The distance between the side edges 811, 811 gradually narrows toward the front.

The driving means 9 includes a motor 90 and a motor 9.
A crank 91 is fixed to the rotating shaft of 0, a connecting rod 92 is pivotally connected to the tip of the crank 91, and one side is pivotally attached to the tip of the connecting rod 92, and the finger member 4 is erected and supported at the upper end. A pair of left and right support plates 9
3 and 93, and a slide block 94 that connects the lower ends of the support plates 93 and 93 and is held by a pair of left and right slide rods 941 and 941 so as to be slidable back and forth.
A first plate cam 95 is fixedly attached to the slide block 94 and has a horizontal cam surface 951 on its upper surface and an inclined cam surface 952 that is continuously inclined upward in front of the horizontal cam surface 951, and intermediate base
It is pivotally connected to the lower surface of _F0 via a support piece 961, and its rear end is connected to the elongated hole 96 in the block 32 of the lifting table 3.
2, and the above-mentioned first
a crank 96 equipped with a roller 963 that rolls on a horizontal cam surface 951 and an inclined cam surface 952 of the plate cam 95; and an inclined cam surface 97 that extends rearward from one of the support plates 93 and slopes rearward and downward.
1 and a horizontal cam surface 97 continuous to the cam surface 971.
2, a second plate cam 97 having an upper surface having an inclined cam surface 981 having an opposite slope to the above-mentioned inclined cam surface 971, and a lower part thereof having a roller 982 that rolls on the above-mentioned inclined cam surface 971; The roller 211 of the feeding member 22 moves on the upper inclined cam surface 981 of the sliding member 98. It is designed to roll. In addition, as shown in FIG. 10, the support plate 93 includes a pusher 93 that presses the operating rod 56.
1, and as described above, when the support plate 93 moves backward, this pusher 931 acts on the operating rod 56 to tilt the restraining plate 54.

(Function) The procedure for immediately packaging an object using the packaging device having the above configuration will be briefly described. First, the article to be packaged A is placed on the feeding table 1, and a large number of wrapping papers B are stacked on the stacking table 21 of the stacking and feeding device 2 to prepare the wrapping paper. Next, the motor 90 is switched on to rotate the crank 91 in the direction of arrow S. As the crank 91 rotates, the support plate 93, under the action of the connecting rod 92,
93 retreats, and accordingly, the roller 963 rolls on the cam surfaces 951, 952 of the first plate cam 95,
When the roller 963 starts rolling on the inclined cam surface 952 along its inclination, the crank 96 swings upward using its front end pivot point as a fulcrum, and in response to this swinging action, the block 32 and the slide rod 3
1 and 31 slide upward, and the elevating table 3 starts to rise. At the same time, the roller 982 rolls on the horizontal cam surface 972 of the second plate cam 97, and when the roller 982 reaches the inclined cam surface 971 a little later than the rise of the table 3, the sliding member 98 moves along the rail 983. The sliding member 9 then starts to rise and the sliding member 9
The roller 221 rolls on the inclined cam surface 981 on the upper surface of the base 222, and the base body 222 moves forward along the horizontal rail 220 against the restoring elasticity of the compression spring 223. As the base body 222 moves forward, the arm 224 and the paper presser 225 move forward on the wrapping paper B, and the rollers 226... (do not rotate at this time)
Due to this action, only one sheet of wrapping paper B at the top is fed out.

When the tip of the wrapping paper B thus fed out reaches the delivery roll 23, it is quickly sent onto the rising table 3 by the rotational force (see FIG. 3A).

When the table 3 reaches the top dead center, the article A on the delivery table 1 is manually delivered onto the table 3 and stacked on the wrapping paper B (see FIG. 3B).
At this time, since multiple ball valves 12 are installed on the delivery table 1, the balls 122 are pushed down by the weight of the object A to open the valves, and compressed air is ejected from the valves and the air pressure causes the balls 122 to open. A buoyant force is applied to the packaged item A, and the packaged item A can be delivered extremely lightly. In addition, the item to be packaged A is on the delivery table 1.
When reaching the front end of the wrapping paper B, the valve body 131 is pushed down to open the valve passage 130, and the compressed air blown out from the valve passage 130 enters the recess 30 on the wrapping paper B spread out on the table 3 at one end. The air is collected and then diffused over the entire surface of the wrapping paper B, and due to the flotation effect of this diffused air and the pressing action of the wrapping paper B, the packaged object A is lightly placed in a predetermined position without touching the wrapping paper B. Ru. In particular, the recess 30 is
It functions to store the energy of the compressed air before it is diffused, and as a result, the compressed air is uniformly diffused thereafter, and the above-mentioned flotation effect and pressing effect on the wrapping paper B become extremely effective. At the top dead center, it is desirable to keep the table 3 stationary for a while, so when the support plate 93 reaches the end position of the backward movement, the limit switch is pressed to automatically stop the rotation of the motor 90, although it is not shown in the figure. It is done like this. In addition, at this time, since the restraining plate 54 is tilted forward by the action of the support plate 93, the front end of the wrapping paper B sent by the sending roller 23 is placed in the gap between the restraining plate 54 and the fixed plate 53. It is in a state of slipping.

When the motor 90 is turned on again after confirming that the wrapping paper B and the packaged object A have been correctly placed on the table 3 as described above, the roller 963 moves to the first plate cam 95 as the crank 91 rotates. The sliding table 3 rapidly descends along the inclined cam surface 952. At the same time, the support plates 93, 93 start reciprocating, and when the roller 963 starts rolling on the horizontal cam surface 951 and the table 3 reaches the dead center, the table 3 remains still, and the restraining plate 54
stands up and clamps the front end of the wrapping paper B with the fixing plate 53, and the finger member 4 passes over the table 3 [see FIG. 3C]. The time program for lowering and stopping the table 3 and reciprocating the finger member 4 is determined by the shape of the first plate cam 95, the vertical stroke width of the table 3, the position of the forward movement start point of the finger member 4, etc. be done properly. When the table 3 is lowered, the front side of the wrapping paper B is held between the restraining plate 54 and the fixing plate 53 and is pulled up, so that the wrapping paper B is pulled up _.
Moreover, _{the rear side is erected by the finger plate 41 of the finger member 4, and these erected pieces B 1 ,}
B ₂ is the contact resistance of the rubber piece 411 and the suppression plate 5
4 and the fixing plate 53 are pulled back and forth in response to the clamping resistance, so-called trunk holding is performed, and when the finger member 4 moves forward thereafter, the rubber sheet 57 hanging down on the front end of the top plate 51 comes into contact with the finger member 4. Due to the resistance action, the wrapping paper B is folded faithfully to the shape of the packaged object A without loosening.

When the finger member 4 hits the object to be packaged A and starts extruding it, the upright pieces B ₁ and B ₂ are folded back and forth by the finger plate 41 and the top plate 51, and the left and right sides thereof are folded into the finger 43. ，
43 and fixed fingers 5, 5 to package the object A.
folded into the side of the

When the packaged item A is further pushed out between the top plate 51 and the folding/discharging table 52 by the finger member 4, the folding pieces 6, 6 are folded as shown in FIG. The downwardly inclined lower sides 611, 611 and the notches 612, 612 of the tatami block bodies 61, 61
Under the action of the upper folded paper piece _B3 is folded downward in an orderly manner (without wrinkles etc.), and then under the action of the upwardly inclined upper sides 711, 711 of the folding pieces 7, 7 and the notches 712, 712, The lower folded paper piece _B4 is neatly folded upward including the guide plates 62, 62 in the same manner as above, and these folded pieces 8,
Opposite sides 811, 8 of the horizontal holding parts 81, 81 of 8
11, it is folded onto the upper surface of the packaged object A. All packaging is completed by appropriately adhesively fixing the folded paper pieces with adhesive tape or the like. In this way, each folded paper piece B ₃ , B ₄ of wrapping paper B is successively folded while moving forward on the folding/discharging table 52 , but the board surface of the folding/discharging table 52 is Compressed air storage box 5 on the bottom
Since compressed air is constantly being ejected from 20 through the small holes 521, the floating effect of the compressed air ensures smooth transfer and discharge.

In this way, the folding of the folded paper pieces B ₃ and B ₄ is completed,
When the crank 91 rotates once, the support plates 93, 93,
The first plate cam 95 and the second plate cam 97 begin to move backward. While the roller 963 is rolling on the horizontal cam surface 951, the table 3 remains stationary at the bottom dead center and the finger 4 member passes over it, and when it finishes passing,
That is, when the roller 963 approaches the inclined cam surface 952, the table 3 starts to rise. table 3
This is achieved by vertical swinging of the crank 96 using the pivot point on the support piece 961 as a fulcrum, and the power point is at the roller 963 between the pivot point and the block 32.
, the working stroke at roller 963 is doubled in block 32 and rises rapidly. In addition, the wrapping paper feeding member 22 also has a roller 982.
While rolling on the horizontal cam surface 972, the spring 2
Although it is located backward due to the restoring elasticity of 23, when it reaches the inclined cam surface 971, the wrapping paper B
It functions to pay out one card. By repeating such operations, the object to be packaged A is successively wrapped in the wrapping paper B.

It should be noted that the present invention is not limited to the above-mentioned embodiment, and for example, the stacking and feeding device 2 for wrapping paper B operates in accordance with the lifting and lowering of the table 3 and the back and forth reciprocation of the finger member 4 and a desired time program. is 1
Other electric means can also be used as long as the sheets can be fed out one by one to a predetermined position.

(Effects of the Invention) As described above, according to the packaging device of the present invention, there is a lifting table for stacking the items to be packaged on the wrapping paper and a table for folding the sides of the wrapping paper by reciprocating back and forth. Since the operation of the finger members and the operation of feeding the wrapping paper onto the lifting table are performed by the same drive source via the cam mechanism according to a desired time program, it is ensured that Wrapping paper is automatically fed out onto a lift table at the right timing, and the wrapping paper is subsequently folded in a series without the timing being out of order, and by repeating this, a large amount of packaging can be carried out efficiently.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the packaging device of the present invention, FIG. 2 is a vertical sectional view taken along the line -- in FIG. 5 is a vertical cross-sectional view taken along the line -- of FIG. 4A, FIG. 6 is a vertical cross-sectional view taken along the line -- of FIG. 4A, FIG. 7 is a partially cutaway perspective view of the wrapping paper feeding device, and FIG. Figure 9 is an enlarged view of the line in Figure 2, Figure 10 is an enlarged view of the line in Figure 2.
The figure is an enlarged view of the lined part in FIG. 2. Explanation of symbols, 1... Feeding table, 2... Lamination feeding device, 3... Lifting table, 4... Finger member, 5
...Fixed finger, 6,7,8...Folding piece, 9...
Drive means, 21... Lamination table, 22... Feeding member, 4
1, 53, 54...Paper piece raising internal means, 93...Drive source member, 952...Horizontal vertical movement conversion means, 22
1,971,981,982...direction reversal means, A
...wrapping paper, B ₁ , B ₂ ... stand-up pieces, B ₃ , B ₄ ... folding paper pieces.

Claims (1)

[Claims] 1 The packaging work route is approximately “L” shaped vertically downward and horizontally forward, and the table 3 is moved at the top dead center position of the lifting table 3 which is driven vertically up and down.
A rectangular parallelepiped-shaped packaged article A is stacked and held on top of the wrapping paper B sent from the wrapping paper stacking and feeding device 2,
While the table 3 is lowered and reaches the bottom dead center, the front and rear sides of the wrapping paper B are wrapped by the paper piece raising internal means 53, 54, 41 provided before and after the vertical working path. The front side upright piece B ₂ and the rear side upright piece B ₁ are made to stand up along the front and rear sides of object A, and they reciprocate horizontally back and forth from the rear part to the front part on the table 3 at the bottom dead center position. The driven finger member 4 pushes the packaged item A and the wrapping paper B on the table 3 in the above-mentioned state toward the fixed finger 5 at the forward end of the forward movement of the finger member 4 and passes them. In a packaging device in which the upright pieces B ₁ and B ₂ are folded onto the upper surface and both left and right side surfaces of the packaged object A using members 4 and 5, the elevating table 3 is reciprocated in the front and back horizontal directions on the machine base. During the rearward movement process of the drive source member 93 mounted as shown in FIG.
2, and the finger member 4 is driven in a linear motion relationship by the driving source member 93, and the wrapping paper stacking and feeding device 2 is moved upwardly from the rear part of the table 3 at the top dead center position. The stacking table 21, whose position is adjusted so that the top wrapping paper B is always at the same level, and the lifting table and the lifting table in the backward movement process of the drive source member 93 in contact with the top wrapping paper B at almost the same timing. Acting direction reversal means 22
1,971,981,982; and a feeding member 22 which is moved forward to feed out the wrapping paper B onto the table 3.