JPH044113B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a paperboard excess portion removal device that removes the excess portion around the paperboard with high efficiency.

<Conventional technology> When making paper packaging containers from flat paperboard such as corrugated paper or cardboard, a press or the like is used to cut the outer circumferential cutting line such as perforations on the quadrilateral paperboard, and the fold line inside the cutting line. The excess portion outside the cut line is removed, the fold line is bent, and the bottom and sides are assembled and fixed with adhesive or staples. When pressing paperboard to form cutting lines or fold lines, the cutting lines must be located inside the edges of the paperboard. Therefore, on the four sides of the paperboard, there will be excess portions extending outside the cutting line.

Further, when creating a shoe shaping material from cardboard, a large number of cutting lines in the shape of the shaping material are formed on the cardboard, and an excess portion is left on the outer periphery of the cardboard.

Conventionally, this excess portion has been removed by hand, one by one, or by stacking paperboards and using a power tool with a rotating claw at the tip.

<Problems to be Solved by the Invention> However, manually removing the excess portion of paperboard is extremely inefficient, and even if it takes a long time, it is not possible to remove a large number of paperboards.

Further, even if a power tool is used, the four sides of the stacked paperboard must be removed individually, and when one side is being removed, the inside of the cutting line may be damaged. Furthermore, if the paperboard is misaligned and stacked, the excess portion cannot be removed correctly.

<Means for Solving the Problems> The present invention has been proposed in view of the above, and includes a plurality of actuation mechanisms each having a chain rotation mechanism having claw pieces on a base table that can be raised and lowered along a support. , the position of the claw of each chain rotation mechanism can be adjusted in the horizontal direction along the length direction of the table, the vertical direction, and the front-rear direction by an operating mechanism, and a position detector for detecting misalignment of the paperboard stack. A paperboard laminate is placed on an interlocking support mechanism, and the claws of each of the operating mechanisms are made to face the side edges of the paperboard laminate so that the excess portions on all four sides of the paperboard are simultaneously removed. The present invention provides a surplus portion removing device.

<Example> The present invention will be explained below with reference to embodiments of the drawings.

1 is a frame having a bottom part 2, pillars 3 standing upright at the four corners of the bottom part 2, and an upper part 4 provided at the upper end of the pillars 3.
It consists of A support mechanism 5 is provided on the bottom 2 of the frame 1, and a pallet 6 on which a paperboard laminate a is placed can be moved in and out from an adjacent conveyor 7 on the top of the support mechanism 5.

The paperboard b of the paperboard laminate a has a cutting line c such as a perforation near the outer periphery, and the area outside this cutting line c is an excess portion d, which must be removed before assembling products such as paper packaging containers. Must be.

The above-mentioned support mechanism 5 has a conveyor part 8 such as a roller bearing on the upper surface that smoothly moves the pallet 6 carried in from the conveyor 7, and has stopper parts 9 on the four sides of the pallet 6 to stop the pallet 6 in a fixed position. are doing. The stopper part 9 is the bottom part 2
The stop plate 11 is rotatably mounted on a frame (not shown) that stands upright from the bottom 2 and is operated by the cylinder mechanism 10. This stopper part 9 is usually a stop plate 11.
falls almost horizontally and does not prevent the pallet 6 from entering and exiting the conveyor section 8. However, palette 6
is placed on the conveyor section 8, the cylinder mechanism 10
is activated, the stop plate 11 stands upright, and the position of the pallet 6 is set accurately.

The conveyor section 8 is provided on the upper surface of a base plate 12, and the base plate 12 is supported from the lower surface by a fine adjustment mechanism 13. Further, a jig cylinder mechanism 14 for fixing the pallet to slightly lift the pallet 6 from the conveyor section 8 is appropriately arranged on the upper surface of the base plate 12 at a location away from the conveyor section 8.

The above-mentioned fine adjustment mechanism 13 is for slightly moving the base plate 12 back and forth and left and right in a horizontal state, and the two moving mechanisms 1
5,15. Each moving mechanism 15 is powered by a motor 16
Connect the output shaft of the output shaft to the gear box 17 with a brake, and connect the screw rod 1
8 is extended, a transmitter 19 is screwed onto the screw rod 18, a groove-shaped guide 20 is fixed to the upper surface of the transmitter 19 perpendicularly to the screw rod 18, and the guide 20
A rail 21 is fitted to the base plate 12, and the rail 21 is attached to the lower surface of the base plate 12. Each of the moving mechanisms 15 as described above is attached to the lower surface of the base plate 12 so as to be perpendicular to each other. Note that the threaded rod 18 is attached to the bottom 2 with a bearing 22.
A friction reducing means such as a ball bearing is provided between the guide 20 and the rail 21.
The base plate 12 is supported by a support device 23 that reduces friction, such as a free bearing, which is appropriately disposed on the bottom portion 2. Therefore, either one of the moving mechanisms 1
When the motor 16 of No. 5 rotates in forward and reverse directions, the screw rod 18 rotates at a slow speed, and the transmitter 19 screwed with the screw rod 18 moves along the screw rod 18, causing the guide 20 to move along the rail 2.
1, the guide 2 of the other moving mechanism 15
0, the rail 21 slides, and the base plate 12 to which the rail 21 is fixed moves. When the motor 16 of the moving mechanism 15 stops rotating, the base plate 12 stops moving. Thereby, by controlling the rotation of the motor 16 of one of the two moving mechanisms 15, the position of the base plate 12 in the front-rear direction or the left-right direction can be adjusted while keeping it in a horizontal state.

On the other hand, the above-mentioned upper part 4 is provided with an oil or air upper cylinder 24, and by the operation of this cylinder 24, a press plate 24' which presses the paperboard stack a from above is positioned inside and above the frame 1. Then, male threaded rods 25 are attached to the inside of the pillars 3 at the four corners of the frame 1, and a drive mechanism 26 for each male threaded rod 25 is provided on the upper surface of the upper part 4. This drive mechanism 26 includes a motor 27 capable of forward and reverse rotation, a first rotation transmission mechanism 29 on the low speed side that transmits the rotation of the motor 27 to the gearbox 28, and a second rotation transmission mechanism 3 on the high speed side.
0, a chain 32 hooked on a wheel 31 provided on the gearbox 28 is hung on a wheel 33 provided on the upper end of one male threaded rod 25, and a wheel 34 provided on the upper end of each male threaded rod 25.
A drive chain 35 is placed in series, and a tension wheel 36 is placed in the middle of this drive chain 35. There is an electric clutch (not shown) inside the gearbox 28, and the rotation of the motor 27 is controlled by the first
The rotation is transmitted to the gearbox 28 by the rotation transmission mechanism 29 and the second rotation transmission mechanism 30, and the rotation transmission mechanism 2 is transmitted to the gearbox 28 by the operation of the electric clutch.
The driving forces of 9 and 30 are transmitted to each male threaded rod 25 via a chain 32. In this case, the rotation of the motor 27 is transmitted to each male threaded rod 25 by the first rotation transmission mechanism 29.
If the rotation of the motor 27 is transmitted to each male screw rod 25 by the second rotation transmission mechanism 30, it is a low-speed forward rotation, and if the rotation is transmitted to each male threaded rod 25, it is a high-speed reverse rotation.

Inside the frame 1, each of the male screw rods 2 is provided.
5, a base 37 that can be raised and lowered is installed. This base 37 is in the shape of a quadrilateral frame consisting of four horizontally long tables 38 located between adjacent columns 3, 3,
The ends of adjacent tables 38 are connected by a connecting member 39, and the connecting member 39 is provided with a female thread (not shown) that is screwed into the male threaded rod 25, and a wheel that slides on the surface of the support column 3. 40 will be provided. Therefore, when each male threaded rod 25 rotates forward at a low speed, the base 37 lowers at a low speed, and when each male threaded rod 25 rotates at a high speed in a reverse direction, the base 37 rises at a high speed.

Position detectors 41 are provided at the four corners of the base 37, that is, at the ends of each connecting member 39 or table 38. The position detector 41 is an optical sensor 44 including a light emitting element 42 and a light receiving element 43 as a set.
A control circuit (not shown) calculates the signal from 4 to generate a control signal, and the motor 16 of the fine adjustment mechanism 13 is actuated by the control signal from the control circuit. The optical sensor 44 is attached to the base 37 via an adjustment table 45 so that its position can be changed. The above-described position detector 41 detects the position of the paperboard stack a on the pallet 6, and each optical sensor 44 faces a corner of the paperboard b. Therefore, the optical sensor 44 always detects each corner of the topmost paperboard b of the paperboard stack a, and if the paperboard b is in the correct position, the motor 16 of each moving mechanism 15 is activated.
is not working. However, if the paperboard b is slightly misaligned in the middle of the paperboard stack a, the two optical sensors 44 located diagonally on the paperboard b will detect the misalignment and drive one of the motors 16 of the fine adjustment mechanism 13. to move the base plate 12 back and forth or left and right,
Set paperboard b in the correct position. And paperboard b
When it reaches the correct position, the control signal from the optical sensor 44 disappears, so the driving motor 16 stops and the base plate 12 stops. Therefore, the position of the paperboard stack a of the pallet 6 placed on the base 12 is constantly adjusted by the fine adjustment mechanism 13 and each optical sensor 44.

Each table 38 of the base 37 described above is equipped with a drive device 46 consisting of a motor, a speed reducer, etc. at one end, and extends in the length direction of the table 38 to form a shaft bearing 47.
Rotation is transmitted between the drive shaft 48 supported by the drive shaft 48 and the drive machine 46, and when the drive machine 46 is driven, the drive shaft 48
rotates. This drive shaft 48 is a shaft with a polygonal cross section, a shaft with a groove, a spliced shaft, or the like.

A groove-shaped guide 49 is formed at the front end of the table 38 in parallel with the drive shaft 48, and each drive shaft 48 has an actuation mechanism 50 that can be guided by the guide 49 and move in the left-right direction along the length of the table 38. will be established. This actuation mechanism 50 includes two parallel first arms 51, 51 and two second arms 52, 5 which are articulated to the first arms 51, 51.
2. The key 54 of the sleeve 53 passed through the drive shaft 48 is fitted into the groove of the drive shaft 48 to support the sleeve 53 so that it can rotate together with the drive shaft 48 and move along the drive shaft 48. A first sprocket 55 is fixedly attached to the center of the sprocket. Further, a bracket 57 provided at one end of the first arm 51 is fitted to the left and right sides of the sleeve 53 via a bearing mechanism 56. Therefore, when the drive shaft 48 rotates, the first sprocket 55 also rotates, but the first arm 51 does not rotate. Further, the sleeve 53 can move along the axial direction of the drive shaft 48, and the first arm 51 can rotate about the bracket 57 as a fulcrum.

Since the tips of the first arms 51, 51 described above and the base ends of the second arms 52, 52 described above are pivotally connected by the shaft 58, the second arm 52 cannot rotate about the shaft 58. A second sprocket 59 and a third sprocket 60 integral with the second sprocket 59 are freely mounted on the shaft 58, and the first
A first chain 61 is passed between the sprocket 55 and the second sprocket 59. Further, a fourth sprocket 63 is loosely mounted on a shaft 62 provided at the tip of the second arm 52, and a second chain 64 is stretched between the third sprocket 60 and the fourth sprocket 63 to form a chain rotation mechanism 65. do. Therefore, in the chain rotation mechanism 65, when the drive shaft 48 rotates, the first chain 61 rotates the second sprocket 5.
9 and the third sprocket 60 rotate, and the second chain 64, which is stretched between the third sprocket 60 and the fourth sprocket 63, rotates the fourth sprocket 63.

The second chain 64 of the chain rotation mechanism 65
As shown in FIGS. 8 to 10, outwardly facing claw pieces 67 are provided on the chain links 66 at appropriate intervals. This claw piece 67 is connected to the pair of left and right link plates 6.
It is constructed by overlapping vertical pieces 67' provided outward at the tips of 8, and the link plate 68 adjacent to both link plates 68
are rotatably connected with a pin 69 to form an endless second
A chain 64 is configured.

A first angle adjustment mechanism 70 is attached to the first arm 51 described above. This first angle adjustment mechanism 70 is
A support plate 72 having an arc-shaped guide hole 71 centered around the drive shaft 48 is placed along the outer surface of the first arm 51.
The boss 73 protruding from the side surface is exposed, and the tightening bolt 74 is screwed onto the first arm 51 through the guide hole 71. Tighten the ends with a tightening nut 76.

On the other hand, a second angle adjustment mechanism 77 is attached to the first arm 51 and the second arm 52. The second angle adjustment mechanism 77 includes a semicircular guide plate 7 having a semicircular long hole 78 centered on the shaft 58.
The base end of the spacer 8 is attached to the outer surface of the second arm 52.
The boss 82 protruding from the side surface of the first arm 51 faces the elongated hole 78, and the crimp bolt 8 is inserted through the elongated hole 78.
3, the guide plate 79 can be press-fitted to the side surface of the first arm 51.

The above-described first angle adjustment mechanism 70 adjusts the angle of the first arm 51 with the drive shaft 48 as the fulcrum, and the second angle adjustment mechanism 77 adjusts the angle of the second arm 52 with respect to the first arm 51 with the shaft 58 as the fulcrum. It is.
That is, in the first angle adjustment mechanism 70, the tightening bolt 74
Loosen the bolt, slide the boss 73 along the guide hole 71 to determine the angle of the first arm 51, and tighten the tightening bolt 7.
4 to fix the first arm 51. Also,
In the second angle adjustment mechanism 77, the crimp bolt 83 is loosened, the boss 82 is slid along the elongated hole 78, and the second
The angle of the arm 52 is determined and the crimp bolt 83 is tightened to fix the second arm 52.

Therefore, according to both angle adjustment mechanisms 70 and 77,
The angle of each arm 51, 52 can be adjusted extremely easily and skillfully by simply tightening or loosening one tightening bolt 74 or one crimp bolt 83, respectively. Further, according to the angle adjustment mechanisms 70 and 77 as described above, the width of each arm 51 and 52 can be formed narrower, and the operating mechanism 50 can be made smaller.

In the paperboard surplus removal device according to the present invention, a plurality of the above-mentioned operating mechanisms 50 are arranged in parallel on each table 38, and each operating mechanism 50 of each table 38 is penetrated by one drive shaft 48.

In order to remove the surplus portions d on the four sides of the paperboard b using the above-mentioned removing device, the drive mechanism 26 rotates each male threaded rod 25 in reverse at high speed to position the base 37 above the frame 1 and remove the paperboard laminate. The pallet 6 on which a is placed is placed on the conveyor section 8 from the conveying device 7 and positioned on the base plate 12. Then, the cylinder mechanism 10 of each stopper part 9 is actuated, and the horizontal stop plate 11 is erected, and the pallet 6 is set at the normal position on the base plate 12. Incidentally, the cylinder mechanism 10 operates instantaneously, and when the pallet 6 is in the normal position, the stop plate 11 is rotated to the horizontal state again. Once the pallet 6 has stopped at the correct position as described above, the fixing jig cylinder mechanism 14 is operated to remove the pallet 6 from the conveyor section 8.
Lift up slightly. Then, by operating the upper cylinder 24, the press plate 24' presses the paperboard stack a from above, and the drive mechanism 26 rotates each male threaded rod 25 in the forward direction at low speed to gradually lower the base 37. The claw piece 67 provided on the second chain 64 at the tip of the operating mechanism 50 and the optical sensor 44 of the position detector 41 are brought close to the top surface of the paperboard stack a, and the drive mechanism 26 is stopped to prevent the base 37 from descending. Stop. Then, the correct position of the paperboard stack a is set by monitoring the peripheral edges of the paperboard with the four optical sensors 44, and the individual actuating mechanisms 50 are adjusted to move the claw pieces 67 to remove the excess portion. Set in the most appropriate position. To adjust the operating mechanism 50, loosen the tightening nut 76 and adjust the operating mechanism 50.
is moved along the guide 49, and when the claw piece 67 is at the most appropriate position for the paperboard, the tightening nut 76 is tightened. Thereby, the position of the claw piece 67 in the left-right direction along the length direction of the table 38 is set. Next, when the tightening bolt 74 is loosened, the boss 73 is inserted into the guide hole 71.
, the first arm 51 rotates about the drive shaft 48, and the claw piece 67 mainly moves up and down. When the claw piece 67 is at the proper height position,
Tighten the tightening bolt 74 to fix the first arm 51. Next, when the crimp bolt 83 is loosened, the boss 82 moves along the elongated hole 78, so the second arm 52 rotates about the shaft 58, and the claw piece 67 moves mainly in the front-rear direction. Then, when the claw piece 67 is in the proper front and back position, tighten the crimp bolt 83 and
The arm 52 is fixed.

Each adjustment operation of the above-mentioned operating mechanism 50 is performed using the paperboard b
This is done depending on the state of the surplus portion d. That is, the portion inside the cutting line c of the paperboard b becomes a part of the product, so the claw piece 67 cannot come into contact with it. Further, by bringing the claw piece 67 into contact with the surplus portion d at a position closest to the cutting line c, the surplus portion d can be scraped off most effectively from the cutting line c. Therefore, the first angle adjustment mechanism 70 and the second angle adjustment mechanism 7 are adjusted so that the claw piece 67 is located forward in the portion where the surplus portion d is wide.
7 to open the first arm 51 and the second arm 52.
is extended as shown by the solid line in Fig. 6, and the claw piece 6 is
7 so that its lower surface contacts the surface of the surplus portion d. Moreover, if the cutting line c approaches the edge of the paperboard and the surplus part d is narrow, the first angle adjustment mechanism 70 and the second
The angle adjustment mechanism 77 allows the first arm 51 and the second
The arm 52 is folded into a dogleg shape as shown by the chain line in FIG. 6, and the claw piece 67 is positioned at the rear near the table 38. Furthermore, the vertical position of the claw piece 67 is set so that the lower side surface of the claw piece 67 comes into contact with the edge of the paperboard.

As described above, each actuating mechanism 50 and the optical sensor 44 of the position detector 41 are individually adjusted, and when each claw piece 67 and optical sensor 44 are at the most appropriate position, the driving machine 46 of each table 38 is driven. to rotate the drive shaft 48, and at the same time, the drive mechanism 26 rotates each male screw rod 25 forward at a low speed to lower the base 37 at a low speed. As a result, the second chain 64 having the claw pieces 67 of each actuating mechanism 50 rotates at high speed to scrape off the excess portion d of the paperboard from the cutting line c and sweep it out to the outside of the frame 1. Sequentially remove the excess paperboard from below by descending at low speed. On the other hand, each position detector 41 constantly detects the four corners of the paperboard b from which the surplus portion is to be removed. Therefore, if the stacked state of the paperboard laminate a is not vertical but is distorted, the position detector 41 detects the shift of the paperboard during the descent of the base 37, and as described above, one of the moving mechanisms 15 moves the base 12 back and forth or left and right to correct the position of the paperboard from which the excess portion is to be removed. In this way, each position detector 41 works with the fine adjustment mechanism 13 to correctly set the position of the paperboard from which the excess portion is removed, so even if the stacked state of the paperboard laminate a is not vertical, the product part of the paperboard will not be damaged. Never.

When the base 37 is lowered to its lowest position, all the excess paperboard on the pallet 6 has been removed, so each table 3
At the same time, the drive mechanism 26 rotates each male threaded rod 25 in reverse at high speed to raise the base 37. When the base 37 rises to the highest level, the drive mechanism 26 is stopped and the fixing jig cylinder mechanism 14 is stopped. It is sufficient to lower the pallet 6, place it on the conveyor section 8, and carry it out to the adjacent conveying device 7.

The above-mentioned steps from loading the pallet to removing the excess portion, controlling the position of the paperboard, and unloading the pallet are automatically performed by electrical control means.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment,
Changes may be made as appropriate without changing the gist.

<Effects of the Invention> In summary, according to the present invention, as long as the dimensions of the paperboard do not change significantly, the excess portions on the four sides of paperboard of any size can be removed extremely quickly and reliably. . In addition, the position of the claw pieces can be adjusted extremely easily, and even if the paperboard laminate is misaligned, the position detector detects the shift, and the base plate on which the paperboard laminate is placed is linked to the position detector. Since the relative position between the paperboard and the claw piece can be kept constant at all times. Therefore, the excess portion outside the cutting line of the paperboard can be accurately removed regardless of its shape, so it can be used regardless of the shape of the product, and is of high practical value.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; Fig. 1 is a front view, Fig. 2 is a plan view with the upper half of the upper part of the frame removed, Fig. 3 is a front view of the support mechanism, and Fig. 4 is the same as above. FIG. 5 is a front view of the position detector, FIG. 6 is a side view of the actuating mechanism, FIG. 7 is a plan view of the actuating mechanism, FIG. 8 is a side view of a part of the second chain, and FIG. FIG. 9 is an exploded perspective view of the link plate of the second chain, and FIG. 10 is an assembled perspective view of the same. 1... Frame, 3... Support, 5... Support mechanism, 37... Base, 38... Table, 41...
Position detector, 50... Operating mechanism, 65... Chain rotation mechanism, 67... Claw piece.

Claims (1)

[Claims] 1. On the base table that can be raised and lowered along the pillars,
A plurality of actuation mechanisms each having a chain rotation mechanism having claw pieces are provided, and the position of the claw pieces of each chain rotation mechanism is adjusted in the left-right direction along the length direction of the table, the up-down direction, and the front-rear direction using the actuation mechanism. The paperboard laminate is placed on a support mechanism that is linked to a position detector that detects the displacement of the paperboard laminate. A paperboard surplus portion removal device characterized in that the surplus portion is removed at the same time.