JPH0825235B2 - Equipment for forming boxes from unfolded sheet material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] In the present invention, one sheet-shaped material (A ₀ ) in a developed state is pulled down and bent into a side surface substantially L-shape, and thereafter, the sheet-shaped material (A ₀ ) is bent. The present invention relates to a box forming device used when a sheet is pushed by a feeder pusher and then conveyed to a series of bending steps thereafter.

[Conventional technology]

As a conventional device for this purpose, as shown in FIG. 24, a suction device (B ') for pulling down a sheet-shaped material (A ₀ ) in a developed state and bending it into a substantially L-shaped side surface, and a side surface substantially. L shape bent extrusions middle of the material (a ₁₎ there is made from a feeder pusher (C ') for advancing (for example, see Japanese Unexamined Utility Model Publication No. 62-60323).

The suction device (B ') shown in FIG. 24 has a suction cup (3') attached to a lever (2 ') which rotates about a horizontal shaft (1). By driving, the lever (2 ') is rotated about the shaft (1) via the crank mechanism (5), whereby the sheet-like materials (A ₀ ) stacked in the magazine (D) are moved downward. It is possible to pull down one by one from an object and bend it into a side surface substantially L shape with the help of guide members (6) and (7) in between. That is, the sucker (3 ') sucks the lower side of the sheet-like materials (A ₀ ) stacked in the magazine (D) from the back side of (a) of FIG. 20 and pulls it down. In the meantime, the parts (b) and (b ') are guided by both guides (6) and (7), and the suction device (B') is bent into a side L shape at the lowest position. (Fig. 21) Then, the material to be packaged is pushed into the recessed portion of the material (A ₁ ) bent in a substantially L shape from the side, and the material (A ₁ ) together with the material to be packaged is fed by the feeder pusher (C ′). It is sent to a series of folding processes after that.

[Problems to be Solved by the Invention]

In this case, the feeder pusher (C ') simply moves back and forth as shown in FIG. 24. Therefore, as shown by the chain line in FIG. ₁ ) It has a drawback that it is not possible to move to the next bending step unless it returns to the position shown by the solid line in the figure after transporting [Fig. 26] to the subsequent series of bending steps. because,
This is because if the material (A ₁ ) (FIG. 26) in the process of molding is in the process of retracting the feeder pusher (C ′) to its original position, it will hinder the return of the feeder pusher (C ′). However, if the material (A ₁ ) in the middle of molding reaches the position shown in Fig. 27, the suction device (B ') can be lifted for the next bending step, but it is lowered due to the reason described above. Therefore, the next material (A ₁ ) cannot be kept waiting on the conveying path (E), and as a result, the next bending process starts unless the feeder pusher (C ′) returns to the original position. I can't. Therefore, there is a drawback that the work efficiency is reduced accordingly.

In order to eliminate this drawback, the feeder pusher (C ') conveys the material (A ₁ ) in the middle of forming, which is bent into a substantially L shape on the side surface by pulling down the suction device (B'), to a predetermined position. After that, the vehicle may dive under the transport path and move backward to return to the original starting position.

The microfilm of Japanese Utility Model Application No. 58-99266 (Japanese Utility Model Application No. 60-6727) shows a feeder pusher that moves as described above. ₀ ) is pulled down and bent sideways into a substantially L-shape, the suction device is caused to have a unique movement, and the feeder pusher is also caused to move as described above.
The sheet-like material stacked in large numbers can be bent efficiently while reliably taking it out from the lower one.

[Means for solving the problem]

In order to achieve this object, in the present invention, a suction device for pulling down a large number of stacked sheet-like materials (A ₀ ) from the lower side and bending the side-like material into a substantially L-shape. (B) pivotally attaches the tips of the two links (31), (32) to the lever (2) having the suction cup (3) at different front and rear positions, and the rear end of the link (32) is The link (31) is pivotally attached to one shaft (33), while the base end of the link (31) on the front side is pivotally attached to the front side of the link (34) whose one end is pivotally attached to the shaft (33) to form one link mechanism. And two links (3) to move the lever (2) back and forth and up and down by this link mechanism.
2) The cam followers (32 ') and (34') are attached to (34), and the cam followers (32 ') and (34') are attached to a series of grooves (35a) of two plate cams (35) and (36). ), (36a), and the suction device (B) and a material in the middle of molding which is bent into a substantially L-shaped side surface by pulling down the suction device (B) (). a ₁₎ a dive to the conveying path under after advancing to a predetermined position, in which a combination of a feeder pusher (C) in which it returns to back to the original starting position retracted.

[Action]

The sheet-shaped material (A ₀ ) in the unfolded state is pulled down by the adsorption device (B) and bent into a substantially L-shaped side surface. The adsorption device (B) in the present invention is configured as described above. Therefore, it makes the following unique movements. That is, when the sheet-like materials (A ₀ ) stacked in the magazine (D) and the like are pulled down one by one from the lower side, the three links (31 ), (32),
The cam followers (32 ') and (34') attached to the two links (32) and (34) of the (34) are rotated by the two plate cams (35) and (36) to cause both plates to rotate. Cams (35), (36)
The engagement position is changed within the series of grooves (35a), (36a) formed in the first groove, so that the lever (2) having the suction cup (3) firstly shows the magazine (D), etc. as shown in FIG. the next sheet material stacked slightly引降those lowermost sheet material (a ₀₎ are then located thereon so as shown in FIG. 15 in the (a ₀ ) Move while rubbing against and pull down. In the meantime, the sheet-shaped material (A ₀ ) has a side surface substantially L as shown in FIG.
It can be bent into a letter shape.

At this moment, the suction force of the suction device (B) is released and the series of grooves (35) of the two plate cams (35), (36) are released.
Cam followers (32 '), (3) in (a), (36a)
2 '(2) due to changes in the engaging position of 4')
Due to the combined movement of 4) and the other link (31), the lever (2) having the suction cup (3), that is, the suction device (B) is
It was slightly lowered as shown in Fig. 17, then the 18th
Move backward as shown. As shown in FIG. 19, the retracted position means that when the adsorbing device (B) moves up and goes to pick up the next sheet-shaped material (A ₀ ), the material (m It is a position where it does not interfere (collide) with A ₁ ), and the suction device (B) retracted up to this point is the transport path (E).
Even if there is a material in the middle of molding (A ₁ ), the next sheet material (A ₀ ) can be retrieved regardless of this.

On the other hand, when the suction force of the suction device (B) is released, the material (A ₁ ) in the process of molding is pushed by the forward movement of the feeder pusher (C) which is protruding to the conveying path (E),
It is sent to the next series of bending steps. At this position, the feeder pusher (C) descends from the position shown by the chain line in FIG. 9 to the position shown by the solid line in the same figure, dives under the conveyance path (E), and then retracts and rises again to return to the original starting position. .

Thus, in the present invention, the adsorption device (B) slightly lowers the lowermost one of the sheet-like materials (A ₀ ) stacked in the magazine (D), and then lowers it. The sheet-shaped material (A ₀ ) is moved while rubbing against the next sheet-shaped material (A ₀ ).
It is possible to prevent two or more sheets from being taken out at the same time, and the adsorbing device (B) bends the material (A ₁ ) which is being formed into a substantially L shape on the side surface to the next series of bending steps. Even if the suction device (B) is in the lowered position before being sent, the suction device (B) can immediately go to the next sheet-shaped material (A ₀ ). The material that has been molded into the state of (A ₁ ) by being lowered can be fed into the next series of bending steps by the feeder pusher (C), and the work efficiency of molding the box is improved accordingly.

〔Example〕

Embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The suction device (B) for pulling down the unfolded sheet-like materials (A ₀ ) stacked in the magazine (D) one by one from the lower one is a conventional suction device (B ′). In addition to the circular movement when the sheet-like material (A ₀ ) is pulled down by rotating about the axis (1) as shown in FIG.

In order to perform this peculiar movement, in the embodiment, as shown in FIG. 11, the tips of the two links (31) and (32) are attached to the base (2a) of the lever (2) having the suction cup (3). The link (32) on the rear side is pivotally attached at different positions, and the base end of the link (32) on the rear side is pivotally attached to one horizontal shaft (33), while the base end of the link (31) on the front side is the shaft (33). ) Is pivotally attached to the front side of a link (34) whose one end is pivotally attached to (1) to form one link mechanism.
Then, in order to move the lever (2) having the suction cup (3) forward and backward and up and down by this link mechanism, the cam follower (32 ') is attached to the two links (32) and (34) pivotally attached to the shaft (33). ), (34 ′) and attach each cam follower (3
2 ') and (34') are two plate cams (3
5) and (36) are inserted into the series of grooves (35a) and (36a) one by one (Figs. 12 and 13).

Plate cams (35), (3 attached to one shaft (21 ')
If the shape of the series of grooves (35a), (36a) formed in 6) is appropriately designed to achieve the intended purpose, three links (31), (32) that form one link mechanism are formed. ), (34) and two links (3) pivotally attached to one shaft (33)
2) The cam followers (32 ') and (34') of (34) are rotated by the two plate cams (35) and (36).
The engagement position is changed within the series of grooves (35a), (36a) formed in (36), whereby the lever (2) having the suction cup (3) is stacked in the magazine (D). When lowering the sheet material (A ₀ ) one by one, first
As shown in Fig. 14, slightly lower the lowermost one, and then move it by rubbing it against the next sheet material (A ₀ ) above it as shown in Fig. 15. Go down. Then, in the meantime, the sheet material (A ₀ ) is bent by the guide members (6) and (7) into a substantially L-shape on the side surface as shown in FIG.

At this moment, the suction force of the suction device (B) is released and the series of grooves (35) of the two plate cams (35), (36) are released.
Cam followers (32 '), (3) in (a), (36a)
2 '(2) due to changes in the engaging position of 4')
Due to the combined movement of 4) and the other link (31), the lever (2) having the suction cup (3), that is, the suction device (B) is
It was slightly lowered as shown in Fig. 17, then the 18th
Move backward as shown. As shown in FIG. 19, the retracted position means that when the adsorbing device (B) moves up and goes to pick up the next sheet-shaped material (A ₀ ), the material (m The lever (2), which is a position where it does not interfere (collide) with A ₁ ) and is retracted to this point, does not matter if there is material (A ₁ ) in the process of being formed on the conveying path (E), the next sheet You can go get the material (A ₀ ).

The material (A ₁ ) in the middle of forming, which is bent into a substantially L-shape on the side surface by being pulled down by the suction device (B) which makes a unique movement as described above, is sent to the next series of bending steps. The material path (E) is forward from the position where the material was pulled down
As shown in FIG. 2, a feeder pusher (C) for feeding the material in the middle of forming (A ₁ ) bent into a substantially L-shape on the left and right sides to the next series of bending steps is shown in FIG. , (C)
Is provided. The pair of left and right feeder pushers (C), (C) are movable in the front-rear direction (the left-right direction in FIG. 2) and up-down direction of the transport path (E), and each feeder pusher (C), (C) Are each provided with a pushing member (8) in the vertical direction, and push forward the material (A ₁ ) which is in the middle of forming and is bent into a substantially L-shaped side face by advancing while protruding from the conveying path (E). be able to.

In order to allow the forward and backward movement and the vertical movement of the feeder pushers (C) and (C), in the embodiment, the pushing member (8) is erected on the mounting block (9) as shown in FIG. The mounting block (9) is mounted so as to be able to move up and down with respect to the sliding block (10) that is movable in the front-rear direction of the transport path (E). Are located in each. In the embodiment, sliding blocks (10) and (10) are attached to guide rods (11) and (11) [Figs. 2 to 5] arranged outside the conveyance path (E) in parallel therewith. Endless timing belts (12), (11) that are slidably mounted one by one and that allow both sliding blocks (10), (10) to run back and forth along the transport path (E).
After fixing to 2) [Figs. 3 and 6], sliding block (1
0) and (10) are movable in the front-rear direction of the conveying path (E), whereby the feeder pusher (C) including the pushing member (8), the mounting block (9) and the sliding block (10) is integrated. It can be slid in the front-back direction of the transport path (E).

On the other hand, as a mechanism for moving the feeder pusher (C) up and down, in the embodiment, as shown in FIG. 4 and FIG. 5, a vertical rail (13) is attached to the sliding block (10), and this is held. The case where the mounting block (9) is mounted as if it is held is illustrated. In order to move the mounting block (9) up and down with respect to the sliding block (10), in the embodiment, as shown in FIGS. 5 and 6, a pair of upper and lower guide rollers mounted on the mounting block (9). (14), (14) holds the horizontal actuating rail (15) arranged in the front-rear direction of the conveying path (E), and the actuating rail (15) is moved up and down by the mechanism shown in FIGS. 7 and 8. The following shows the case of making it. That is, two horizontal actuating rails (15) on the left and right sides of the conveying path (E), both ends of the actuating rails (15) and actuating levers () which can be swung around the shafts (16 '), (17'). 16) and (17) are respectively pivotally attached to the tips of both levers (16), (1
7) is connected with the connecting rod (18), and the operating lever (1
7) and a lever (1
9) is connected with the connecting rod (20). And the lever (1
The cam follower (19a) attached to 9) is fitted into a series of grooves (not shown) of the plate cam (21) which rotates in a fixed direction around the shaft (21 '). When the plate cam (21) rotates in either the clockwise or counterclockwise direction in FIG. 8, the cam follower (19a) of the lever (19) causes the plate cam (2) to rotate.
The engagement position is changed in the series of grooves of 1), so that the lever (19) swings about the shaft (19 '). Then, the movement is moved through the connecting rod (20) to the operating lever (17).
To the actuating lever (16) via the connecting rod (18), and the levers (16) and (17) are connected to the shafts (16 ') and (17').
Swing around. For example, when the lever (19) swings from the position shown by the chain line in FIG. 8 to the position shown by the solid line,
The operating lever (17) swings from the position indicated by the chain line in the figure through the connecting rod (20) as shown by the solid line, and the operating lever (16) also moves through the connecting rod (18) in the position indicated by the chain line in the figure. Rocks as indicated by the solid line. Therefore, both operating levers (16), (1
The one actuating rail (15), both ends of which are pivotally attached to 7), rises from the position shown by the chain line in the figure as shown by the solid line. If the lever (19) swings in the opposite direction to the previous case, the operating lever (1
6) and (17) also swing in the opposite direction. Therefore, the one actuating rail (15) whose both ends are pivotally attached to the actuating levers (16) and (17) is lowered in the opposite manner.
In this way, when the operating rail (15) moves up or down, the mounting block (9) engaged with the operating rail (15) by the pair of upper and lower guide rollers (14), (14) causes the mounting block (9) to move. ) Move up and down along the rail (13). A state in which the mounting block (9) is raised is shown by a solid line in FIG. 5 and a chain line in FIG. 9, and in this case, the pushing member (8) erected on the mounting block (9) conveys the conveying path (E). Is sticking out. On the contrary, the state where the mounting block (9) is lowered is shown by the solid line in FIG. 9, and in this case, the pushing member (8) erected on the mounting block (9) is the conveying path (E).
Crawl down. Thus, the feeder pusher (C)
Can be projected from the upper surface of the transport path (E) or can be dipped therein. However, at this timing, the material (A ₁ ) which is bent in the shape of a letter L on the side surface is pushed from the position where it is placed on the transportation path (E) to the next series of bending steps until it is pushed. After the material (A ₁ ) is pushed out to a series of folding steps while remaining protruding from (E), it dive under the conveying path (E), and when it retreats and returns to the position just below the original starting position, it is conveyed again. It shall project from the upper surface of the road (E). In order to cause the feeder pusher (C) to perform this series of movements, a timing belt (12) that slides the sliding block (10) along the guide rod (11) in the front-rear direction and the sliding block (10).
On the other hand, it can be carried out by operating the mounting block (9) and the actuating rail (15) for moving the mounting block (9) in a timely manner. As means for vertically moving the mounting block (9) with respect to the sliding block (10), a cylinder may be used other than the mechanism shown in the embodiment.

When one sheet of material (A ₀ ) is pulled down from the magazine (D) onto the transport path (E) by the suction device (B),
In the meantime, the side surface is bent into a substantially L shape, and the material (A ₁ ) is sent to the next series of bending steps by the pair of left and right feeder pushers (C) and (C). _{When 1} ) is sent to that position, the feeder pushers (C), (C) sneak under the conveying path (E) by the mechanism described above, and the timing belts (12), (1)
When 2) goes backward, it retreats and returns to the position just below the original starting position. Then, it is raised by the mechanism described above and again projects from the upper surface of the transport path (E) to perform the next pushing operation. Since the pair of left and right feeder pushers (C), (C) perform this operation, after the material (A ₁ ) being formed is sent to the next series of bending steps, the suction device (B) It is possible to go to get the sheet material (A ₀ ), and the work efficiency of forming the box is improved by that much. This is because the pair of left and right feeder pushers (C) and (C) retreat under the conveying path (E), so that even if there is the next material (A ₁ ) in the middle of molding on the conveying path (E). However, it does not interfere (collide) with this. That is, even if the material (A ₁ ) in the middle of the next molding is present on the conveying path (E), the pair of left and right feeder pushers (C) and (C) retreat under the conveying path (E). Therefore, there is no hindrance to the return of the feeder pusher (C), and the work efficiency of forming the box is improved accordingly.

The pushing member (8) shown in the embodiment is mounted on a mounting block (9) so as to be rotatable in a plane about a vertical shaft (22) concentric therewith (Fig. 5). A base of the bending member (23) is attached to the. This is while pushing the material (A ₁ ) which is in the process of being bent into a substantially L shape on the side surface by the pair of left and right feeder pushers (C), pushing members (8), (8) of the feeding pushers (C). The left and right inner flaps (a ₁ ) (a ₁ ) on the front side are bent as shown in FIG. That is, as described above, the left and right timing belts (12) and (12) are driven in synchronization with each other, and the sliding blocks (10) and (10) are moved along the guide rod (11).
The left and right folding members (23) and (23) gradually rotate from the position P ₁ in FIG. 10 as they close while the left and right move in the rightward direction in FIGS. 2 to 5. The two inner flaps (a ₁ ) and (a ₁ ) on the left and right are sequentially folded inward from each fold line (d), and when this material comes to the position P ₂ , the two folding members (23 ), (23), two inner flaps (a ₁ ) on the left and right,
As shown in FIG. 22, (a ₁ ) is bent at a right angle from the fold lines (d) and (d). As a means for symmetrically rotating the left and right folding members (23), (23),
In the embodiment, the cam followers (24) are arranged so as to be associated with the pushing member (8) as shown in FIGS. 4 to 6 and 9, and the cam followers (24) are provided on the left and right sides of the conveying path (E). (2
5), (25) [FIG. 2, FIG. 3, FIG. 4, FIG. 7] The case where they are engaged with a series of engagement surfaces is illustrated. For example, when the pair of left and right pushing members (8), (8) push the material (A ₁ ) which is being formed on the conveying path (E), the left and right cam followers (24), (24) Left and right two cam plates (2
5) and (25) are engaged with the gradually expanding engaging surface (25a), the two bending members (23) and (23) on the left and right are
From the appearance of P ₁ , they rotate inward as they close to each other, and at the position of P _{2 they} are in the most closed state. Between P ₂ and P ₃ , the cam followers (24), (24) are parallel to the transport path (E). The right and left folding members (23), (2
3) keeps its appearance. Then, from the position of P _3, the cam followers (24) and (24) are connected to the left and right two cam plates (2
While engaging the gradually narrowing engagement surface (25c) of 5) and (25), the left and right folding members (23) and (23) turn to open gradually in the opposite direction. To do. Thus, while the material is being pushed by the pushing members (8) and (8) of the pair of left and right feeder pushers (C) and (C), the left and right inner flaps (a ₁ ) and (a ₁ ) ) Is bent at a right angle from the crease line (d). In the embodiment, in addition to the bending work of the inner flaps (a ₁ ) and (a ₁ ), a series of subsequent folding works such as the front inner flaps (a ₂ ) and (a ₂ ) are continuously performed. So that it can be done on a regular basis. That is, the guide members indicated by (26) in FIG. 1 are arranged on both the left and right sides of the conveying path (E), and further, the pair of left and right guide members (6), (6)
As shown in (6 '), the lower part of the lower part becomes gradually lower as it goes forward, and the front part is horizontal as shown in (6 ") and has a pair of left and right feeder pushers (C),
Of the material that has been pushed out by (C), the inner flaps (a ₂ ) and (a ₂ ) on the front side are provided with two guide members (26) on the left and right,
It is bent by (26) as shown in Fig. 22, and the front body wall and the top wall are bent by two right and left guide members (6) (6 ') as shown in Fig. 22. Further, the horizontal (6 ") portion can be bent horizontally as shown in Fig. 23. Also, during the bending process, the adhesive applying device (F) [first Figure 1] is also provided with left and right, both adhesive application device (F), the left and right inner flaps of the material being conveyed (a ₃₎ by _{(F) (a 1),} (a 1), an inner flap ( a _2), (both the a ₂₎ are as adhesive is applied. the adhesive application device (F), (F)
A pair of upper and lower guide members (27), (27) are provided in front of the left and right sides, and left and right inner flaps (a ₁ ), (a ₁ ), (a ₂ ), (a ₂ ) The upper and lower outer flaps (a ₃ ), (a ₃ ), (a ₄ ), and (a ₄ ) on the left and right are gradually bent as shown in FIG. I'm trying to press on this.

After the adhesive application work, when the upper and lower outer flaps (a ₃ ), (a ₃ ), (a ₄ ), and (a ₄ ) on the left and right begin to be gradually bent as shown in FIG. 23. , Left and right on the front side 2
Since the bending member (23) of the feeder pusher (C) holding the inner flaps (a ₁ ) and (a ₁ ) of the sheets only interferes, as shown in P ₃ of FIG. Let it escape to the outside a little.

By repeating this operation, the sheet-like materials (A ₀ ) stacked in the magazine (D) are pulled down while being attracted by the adsorption device (B), and are bent into a substantially L-shaped side surface,
While this is pushed by a pair of left and right feeder pushers, a series of subsequent bending operations can be continuously performed.

In addition, in the figure, (28) [Figs. 1 to 5] is a pushing member arranged in front of the feeder pusher (C) with a certain space therebetween, which is indicated by (29) in Fig. 1. It is for ejecting the box after completion of molding that has been crimped by the crimping device to the outside of the machine, and when the feeder pusher (C) goes under the transport path (E) and retracts as it is, this pushing member (28) also As shown by the chain line in FIG. 5, it retreats in a state where it sunk under the conveyance path (E), and when it returns to the original position, it is projected again onto the conveyance path (E) by the force of the spring (30).

In order to match the timing of the movement of the suction device (B) and the timing of the movement of the feeder pusher (C) described above, the two plate cams (35) and (36) are provided with feeder feeders (as shown in FIG. 2). It is attached to the shaft (21 ') of the plate cam (21) for moving C) up and down, and one shaft (21')
The plate cams (21), (35), and (36) rotate in the same direction by the constant rotation of. However, each plate cam (21), (35), (36) may be attached to a separate shaft.

As described above, according to the present invention, since the suction device (B) and the feeder pusher (C) that perform unique movements are provided, the sheet-shaped materials (A ₀ ) stacked in the magazine (D). After slightly lowering the lowermost one of the sheet-like materials (A ₀ ), the sheet-like material (A ₀ ) is moved down so that the sheet-like material (A ₀ ) is rubbed against the next sheet-like material (A ₀ ). It is possible to prevent two or more sheets from being taken out at the same time, and at the same time, the material (A ₁ ) which is in the middle of forming and is bent into a substantially L-shaped side surface by this suction device (B) is sent to the next series of bending steps. Even if the adsorbing device (B) is in the position where the adsorbing device (B) is lowered before it is pulled down, the adsorbing device (B) can immediately go to the next sheet material (A ₀ ). the molded material in the state of (a ₁₎ by being Serial The feeder pusher (C) can be fed to the next series of folding steps, thereby improving the working efficiency of forming a much box.

〔The invention's effect〕

In the present invention, when the sheet-like materials (A ₀ ) stacked in large numbers by the adsorption device (B) are taken out from the lower side, it is possible to prevent two or more sheets from being taken out at the same time. Even if the material (A ₁ ) in the process of being formed by being pulled down by the adsorption device (B) and bent into a substantially L-shaped side surface is at the lowered position, the material (A ₁ )
Since the next sheet-shaped material (A ₀ ) can be taken regardless of the movement of the feeder pusher (C) for feeding the next sheet into the bending process, the work efficiency of forming the box is improved. There is an effect of doing.

[Brief description of drawings]

1 to 23 of the accompanying drawings show an embodiment of the present invention. FIG. 1 is an elevational view of the entire apparatus, and FIGS. 2 and 3 show the arrangement of feeder pushers. Plan view and front view, FIG. 4 is an enlarged view of only a part thereof Plan view FIG. 5 is its front view, FIG. 6 is its side view, FIG. 7 and FIG. 8 are feeder pushers FIG. 9 is a plan view and a front view showing a mechanism for moving up and down, FIG. 9 is an enlarged view showing a state in which the feeder pusher is submerged under the conveying path, and FIG. 10 is an inside view by a folding member provided in the feeder pusher. Fig. 11 is a plan view showing the flap bending work status in the order of steps, Fig. 11 is a front view of only the suction device, and Figs. 12 and 13 are a link mechanism and a plate for performing a unique operation of the suction device. FIG. 12 is an enlarged side view showing the engagement state with the cam, and FIG. 12 shows the suction device. The engagement state between the rear side link and the plate cam, FIG. 13 shows the engagement state between the link connected to the front side link of the suction device and the plate cam, respectively. , A front view for explaining the movement of the adsorption device in the present invention step by step, FIG. 20 is a perspective view showing an example of a sheet-shaped material, FIG. 21, FIG. 22 and FIG. Fig. 24 is a perspective view showing the bending state of the material in the order of steps, Fig. 24 is an overall elevational view showing an example of a conventional device in which the feeder pusher moves back and forth with the head out of the conveying path, Fig. 25, Fig. 25. 26 and 27 are front views showing, in the order of steps, the state of withdrawal of the sheet-shaped material in the conventional suction device that rotates about one point. (A ₀ ) …… Sheet material, (A ₁ ) …… Side L-shaped material, (B), (B ′) …… Suction device, (C) …… Feeder pusher, (E) …… Transport path, (2) …… Lever, (3) …… Sucker, (9) …… Mounting block, (10)
…… Sliding block, (12) …… Timing belt, (1
5) …… Actuating rail, (31), (32), (34) …… Link, (32 ′), (34 ′) …… Cam follower, (33) ……
Axis, (35), (36) …… Plate cam, (35a), (36a) ……
groove.

Claims (3)

[Claims] 1. A suction device (B) for pulling down a large number of stacked sheet-shaped materials (A ₀ ) from the lower side and bending them into a substantially L-shaped side surface is a suction cup ( The ends of the two links (31) and (32) are pivotally attached to the lever (2) having 3) at different front and rear positions, and the rear end of the link (32) has one shaft (33). On the other hand, the base end of the front side link (31) is pivotally attached to the front side of the link (34) whose one end is pivotally attached to the shaft (33) to form one link mechanism. 2 to move the lever (2) forward and backward and up and down by
Cam followers (32 '), on links (32), (34) of the book,
(34 ') is attached to each cam follower (32'), (34 ')
The two plate cams (35), (36) in a series of grooves (35a), (3
6a), one by one, and the suction device (B) and the material (A) in the middle of molding which is bent into a side surface substantially L-shape by pulling down the suction device (B). ₁ ) is advanced to a predetermined position, then dive under the conveying path, and is retracted to return to the original starting position. It is composed of a feeder pusher (C). Equipment for molding. 2. The feeder pusher (C) slides only up and down with respect to a sliding block (10) fixed to a timing belt (12) running in the front-rear direction of a conveying path at a constant height position. An apparatus for forming a box from the unfolded sheet-like material according to claim 1, mounted on a mounting block (9) which can be moved. 3. The mounting block (9) engages with an operating rail (15) whose height can be changed, and the vertical movement of the operating rail (15) causes the feeder pusher (C) to move to the sliding block (10). The apparatus for forming a box from the unfolded sheet-like material according to claim 2, wherein the box is moved up and down.