JPS6161971B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for manufacturing folded boxes, and is intended to contribute to rationalization of folded box manufacturing and uniformity of product precision by fully automatically assembling and forming folded boxes.

Conventionally, the production of folded boxes has often relied on manual labor, resulting in poor production efficiency and high costs, and the precision of folded boxes has been uneven. For this reason, attempts have been made to rationalize and equalize precision using automatic machines, but in many cases only part of the manufacturing process is mechanized, and there are few that can achieve complete automation. It just wasn't enough.

Therefore, in this invention, we have invented a manufacturing method that eliminates the above-mentioned conventional drawbacks, greatly improves production efficiency through automation, and also achieves uniformity of product accuracy. L
It is bent into a letter shape or a U-shape, and transported with the upper part folded together with the mold member to the framework position. At the framework position, the unbent part of the peripheral side material is bent along the mold member, and the peripheral side material is bent along the mold member. The ends of the material are heat-sealed to form a frame shape, and glue is applied to the end surface of the peripheral material while it is being conveyed to the bottoming position by the above-mentioned mold member. The bottom plate supplied at each step is pressed against the gluing surface of the circumferential material to perform bottom bonding, and then transported to a drying position by a mold member, a heating member facing the bottom plate is brought into contact with the bottom plate, and the circumferential material is The purpose is to dry the bottom joint.

Next, embodiments of the method of the present invention will be illustrated below with reference to the drawings together with the apparatus used for carrying out the method.

First, FIGS. 1 and 2 show an outline of the apparatus used to carry out the method of the present invention, and A is for supplying a strip-shaped folding box circumferential material a made of thermoplastic resin foam or the like. B is the bending position where the circumferential side material a is folded in half into an L shape, C is the framing position where the circumferential side material a is framed into a square shape, D is the gluing position, and E is the position where the bottom plate is supplied and joined. Bottoming position, F
G indicates the drying position relative to bottoming, and G indicates the discharging position of the folded box, and movement of the peripheral side material a and the like between the respective positions can be performed by a conveying device 10 that is intermittently fed.

The above-mentioned conveying device 10 has bases 12 attached at regular intervals to endless rotating chains 11, 11 stretched in two rows with a required width, and a strip-shaped circumferential material a is attached to the bases 12 at regular intervals. It is equipped with a rectangular mold member 20 that can be rolled along, and is intermittently fed by a drive section 10'. The mold member 20 is the conveyor device 10
The chains 11, 11 are not parallel to each other, but are mounted obliquely as shown in Fig. 1 when viewed from the top, so that one corner section leads in the direction of movement of the chain. and move. Reference numeral 21 denotes a notch formed in a corner portion of the mold member 20 on the rear side of movement, and is a notch formed in a corner portion of the mold member 20 on the moving rear side, and is a notch formed in a corner portion of the mold member 20 on the moving rear side.
0 is the part that moves forward and backward from below. Reference numeral 22 denotes a through hole formed approximately at the center of the mold member 20, through which a bottom plate holder 125, which will be described later, moves forward and backward. Also 23
are through holes formed on both sides of the mold member 20, through which the ejector 140 (see FIG. 7) moves forward and backward. The base 12 also has a lower portion corresponding to the notch 21 and the through holes 22 and 23 of the mold member 20 so that the heating blade 90, the bottom plate receiver 125, and the ejector 140 can advance and retreat from the lower part of the conveying device 10. is penetrated.

At the loading position A, numeral 30 is a shooter provided above the conveying device 10, and is a part for storing the strip-shaped circumferential material a. Reference numeral 40 denotes a pusher which reciprocates directly below the shooter 30 by a cylinder mechanism 41, and feeds the stocked circumferential side materials a one by one. Reference numeral 50 in FIG. 3 denotes a cutting member provided directly above the forward movement position of the pusher 40, which is provided with V-shaped cutting blades 51 at appropriate intervals, and is provided with cutting blades 51 such as V-shaped cutting blades at appropriate intervals. This method involves cutting a groove V such as a V shape for corner bending in the side material a, and cuts such as an inclined shape at both ends, and the cutting can be performed very easily. Further, 60 is a reversing support device provided at an appropriate position on the rear side of the conveying device 10. 61.6 of them
Reference numeral 1 denotes a parallel arm-shaped reversing member for reversing the circumferential member a from a horizontal state to a vertical state, and is rotated by 90 degrees around a shaft 63 by a cylinder mechanism 62. Reference numeral 64 denotes a notch formed at the tip of the reversing members 61, 61, which is located on the extension line of the forward end of the pusher 40 when the reversing members 61, 61 are in a horizontal state, and is used to cut the circumferential material fed by the pusher 40. It is now possible to insert a. In particular, 65 and 66 shown in detail in FIG. 3 are used to intersect the circumferential side material a, which has been vertically reversed by the reversing members 61 and 61, with the mold member 20 at the rearmost position in front of the mold member 20. This is a support member that supports in a straight line. That is, the horizontal portion 65' of the support member 65 is connected to the reversing members 61, 6.
1 is provided above the notches 64, 64, and slides downward by a cylinder mechanism (not shown) to brush off the circumferential material a onto the horizontal portion 66' of the lower supporting member 66, At the same time, the circumferential member a is held between the two vertical portions 65'', 65'' in an upright state. The support members 65 and 66 are located on both sides of the mold member 20 so as not to interfere with the movement of the mold member 20. Furthermore, the lower support member 66 is
A cylinder mechanism (not shown) rotates rearward in synchronization with the bending of the circumferential member a to release the support of the circumferential member a, 6
7 is a guide for reversing the circumferential material a (see FIG. 3 for both). Further, 70 at the bending position B and the framework position C (see FIG. 2) is the mold member 20.
This upper guide is elastically supported by a spring 71 or the like just above the upper guide, and prevents the circumferential side member a from jumping upward. 72, 72 (see Figure 1)
is a guide for maintaining the L-shape while the peripheral material a is being transferred.

Then, the peripheral side material a is carried along with the mold member 20 by the transfer of the conveying device 10, and is bent into an L-shape along a part thereof, so that the above-mentioned bending is easily and reliably performed. .

Next, at the framework position C, 80 is a bending member that moves back and forth along the mold member 20 by the cylinder mechanism 81, and bends the unbent portion of the peripheral side material a,
It is made into a frame shape along the mold member 20. 9
0 is a heating blade that can be temporarily positioned at the corner portion where both ends of the circumferential material a meet. The heating blade 90 is a thin metal blade that heats and fuses the abutting ends of the circumferential material a, and is inserted into the notch 21 of the mold member 20 from below the conveying device 10 using a cylinder mechanism 91. and advance and retreat. This forward and backward movement may be performed by turning means. Furthermore, at the gluing position D in the middle of the movement of the conveyance device 10, 100 is a gluing roll that comes into contact with the upper end surface of the circumferential material a passing through and performs gluing, and 101 is a gluing roll that supplies glue to the gluing roll. It's a tank. At this time, since the circumferential side material a is conveyed obliquely to the traveling direction, the gluing roll 100 and the circumferential side material a come into contact with each other at an angle, and the glue is stretched smoothly. As a result, the coating state is good and even.

In the above, the circumferential side material a is assembled into a folded box shape at the framework position C, and then is glued and transported to the subsequent bottom attachment position E.

At the bottoming position E, reference numeral 110 shown in FIGS. 4 and 5 is a bottoming device that joins the bottom plate b to the end surface of the circumferential material. Among them, reference numeral 111 is a shooter located above the side of the conveyance device 10 for storing the bottom plates b, so that the stacked bottom plates b can fall naturally. Further, a small protrusion 112 is formed at the lower end of the shooter 111 to prevent the bottom plate b from falling. 113 is the stocked bottom plate b
This is a take-out member for taking out from the lower part of the shooter 111, and the take-out is achieved by adsorption to the bottom plate b by a suction cup 114 provided at the tip and performing vacuum suction, and a pulling action by moving the suction cup downward. After pulling out the bottom plate b, the take-out member 113 moves to the upper and lower two conveyors 115, 115 arranged below the shooter 111, and moves the bottom plate b into the gap t at the boundary between the conveyors 115, 115. send. Note that the movement of the take-out member 113 downward and toward the conveyors 115, 115 after sucking the bottom plate b is performed by a cylinder mechanism (not shown). 116 is a protruding claw provided at the front end of the conveyors 115, 115, which pokes the rear end of the bottom plate b, which is fed while being held in the gap t at the boundary between the conveyors 115, 115. It is fed to a predetermined position between a pressing plate 122 and a bottom plate receiver 125, which will be described later, and its ejection is performed by a cylinder mechanism 117.
Next, 118 is a bottom plate guide located above the circumferential material a that is framed and fed by the conveying device 10. The bottom plate guide 118 has a fence shape that can be placed along the outer periphery of the bottom plate b (see especially FIG. 5), and is attached to the mounting frame 1 from the guide post 119.
20, and is slidable up and down. The bottom plate guide 118 is connected to the conveyor 1
It acts as a stopper for fixing the bottom plate b fed by the terminals 15, 115, etc. in a fixed position, and
When the press plate 122, which will be described later, advances downward, it also serves as a downward guide for the fed bottom plate b. 121 is a coil spring that presses the mounting frame 120 upward. Reference numeral 122 denotes a pressing plate located above the bottom plate guide 118, which extends from the guide post 119 via the mounting frame 123, and can be moved up and down by a cylinder mechanism 124.
The pressing plate 122 has a rectangular shape along the outer periphery of the bottom plate b, and extends through the inside of the bottom plate guide 118 to near the upper end surface of the peripheral side member a. At this time, the mounting frame 123 of the pressing plate 122 is configured to press the mounting frame 120 of the bottom plate guide 118 at the guide post 119 portion, so that the mounting frame 120 can be lowered against the coil spring 121. Therefore, when the pressing plate 122 advances, the bottom plate guide 118 moves downward together with the pushing plate 122 and follows the outer periphery of the circumferential member a. Further, 125 is a bottom plate holder that extends from below the conveying device 10 toward the pressing plate 122 side. After the conveyance device 10 is fixed at a fixed position, the bottom plate receiver 125 is inserted into the through hole 13 of the base 12 and the through hole 22 of the mold member 20 by the cylinder mechanism 126 and advanced to the pressing plate 122 side, and is moved to the conveyor 115, 115 etc., and serves to receive the bottom plate b. At this time, the bottom plate b is
5, 115, so that it can be stably placed on the bottom plate receiver. Furthermore, the bottom plate receiver 125 has a compression spring 1 inside.
27, which is in the form of a piston mechanism that can slide separately from the cylinder mechanism 126, and is adapted to be pushed down to the upper end position of the circumferential side member a by advancing the pressing plate 122 downward.

As a result of the above, the bottom plates b are taken out one by one from the shooter 111 and placed on the conveyors 115, 115.
etc., and is fed onto the bottom plate receiver 125 and fixed in position by the bottom plate guide 118, and then the following pressing plate 12
2, it is held between the press plate 122 and the bottom plate receiver 125, and is fed downward while being guided by the bottom plate guide 118 and placed on the upper end surface of the circumferential material a. It turns out. At this time, as described above, the bottom plate guide 118 also descends and follows the outer periphery of the circumferential material a, so the bottom plate b is placed accurately without any displacement, and the pressing action of the pressing plate 122 prevents connection defects. A reliable bottoming is achieved. Further, the bottom plate receiver 125 retreats below the conveying device 10 after the bottom plate b is placed on the upper end surface of the circumferential material a. Then, the bottomed peripheral material a is conveyed to the subsequent drying position F by the shaped member 20.

In the drying position F, 130 is a heating member provided at a position facing the bottom plate b. The heating member 13
0 is a rectangular plate-shaped body along the bottom plate b, which is loosened by a built-in heater or the like. Then, the heating member 130 is slid by the cylinder mechanism 131,
It contacts the bottom plate b and heats and dries the bottom joint while pressing it. Reference numeral 132 denotes a buffer spring for use when it comes into contact with the bottom plate b (see FIG. 6).

Therefore, the bottom plate of the folding box can be reliably joined. Then, it is transferred to the subsequent discharge position G. At the discharge position G, which is shown in detail in FIG. 7, 140 is an ejector that moves up and down from below the conveyor 10 through the through holes 23 on both sides of the mold member 20, and removes the assembled folding boxes from the mold. It pushes up the member 20 and separates it from the mold member 20, and is operated by the cylinder mechanism 141. 142 is a feeder that transfers the folded boxes lifted above the mold member 20 by the ejector 140 to the conveyor 143, and is moved to the conveyor 143 side by a cylinder mechanism or a chain mechanism using a motor (not shown). . Also,
Fingers 142', 14 of feeder 142
The 2' section is opened and closed by a cylinder 145 so that the folded box can be clamped and unclamped. 144
is a disk-shaped recovery member that rotates eccentrically and is provided at the end of the conveyor 143, and it stands up the folded boxes that are conveyed by the conveyor 143 and stands upright at the rear end of the discharge chute 150, and also lifts the folded boxes upright from the discharge chute 150. It pushes 150 folding boxes forward all at once.

With the above steps, the manufacturing and discharging of folded boxes can be carried out fully automatically. Note that the above-mentioned manufacturing apparatus is one in which the mold member 20 is mounted obliquely with respect to the traveling direction of the conveying device 10 when viewed from above, and therefore the peripheral material a is conveyed obliquely; however, In addition, the mold member 20 may be installed parallel to the chain 11 and aligned along the traveling direction of the conveying device 10. In this case, the circumferential material a is bent into a U-shape at the position B. This means that it can be bent, and a framework can be created by providing only one of the bending members 80 (see FIG. 8). However, in the above case, the gluing roll 100 and the circumferential material a are perpendicular to each other, which tends to cause uneven glue application.
It is preferable to install the adhesive obliquely with respect to the perpendicular direction of the adhesive because it allows for uniform application of glue similar to the above-mentioned embodiment. Also, the reversal bearing device 6
0, the reversing support device 60 is constructed by the reversing member 61 and the supporting members 65 and 66, but as shown in FIG. If a rotatable pawl 69 is provided to allow the circumferential member a to be chucked, the supporting members 65 and 66 can be omitted.

Furthermore, the take-out member 113 for taking out the bottom plate b one by one at the bottom mounting position E is also connected to the suction cup 11 described above.
In addition to the adsorption method described in No. 4, it is also possible to use an extrusion method similar to the pusher 40 at the loading position A (not shown).

In addition, as a loading method for the peripheral material a,
In addition to the method using the above-mentioned reversing support device 60, the circumferential side member a in an upright state is moved to the mold member 2 using a shooter or the like.
Various methods can be employed, such as a method of guiding and supporting a supply between 0.0 and 20° to a predetermined position (not shown).

As described above, according to the present invention, the strip-shaped circumferential material a is transported by the mold member 20, and after being bent along a part of it into an L-shape or a U-shape, the frame is positioned. C, the unbent portion is bent to follow the entire circumference of the mold member 20, and the abutting portions of both ends of the circumferential side material a are heat-sealed to form a frame shape. The framework can be assembled easily and quickly, and since the framework is assembled along the mold member 20, each corner is reliably bent, and there are no steps at the butted ends, allowing accurate framework construction into a folded box shape. It turns out. Further, since the work of gluing the end face of the circumferential side material a is carried out while the circumferential side material a is being transported by the mold member 20 to the bottom attachment position E, gluing can be performed very easily. Furthermore, since the bottoming at the bottoming position E is evenly pressurized by the pressing plate 122 facing the circumferential material a, good adhesion without uneven joining is possible, and at the subsequent drying position G, The bottom joint is dried while being pressed by the heating member 130, and reliable manufacturing can be achieved without peeling of the bottom plate b. And the surrounding material a
Since the bending into an L-shape, the gluing to the top end surface, the bottom attachment, etc., are all performed while being supported by a square mold member and transported.
These operations can be performed easily and reliably.

In addition, the equipment used to carry out the above method is
As mentioned above, manufacturing is performed sequentially using intermittent feeding, and compared to manufacturing using separate equipment for each process, the number of attached equipment such as loading equipment and unloading equipment can be greatly reduced. Since the bending of the material a into an L-shape or the like and the gluing on the upper end surface thereof are carried out using the conveyance means by the conveyance device 10 using the mold member 20, there is no need for a complicated assembly device or gluing device. , the entire device has a very simple structure, the price of the device can be greatly reduced, and maintenance management is also easy. Furthermore, it can achieve various excellent effects such as achieving reliable manufacturing through full automation, improving production efficiency, and making it possible to reduce personnel.

Therefore, by using the folding box manufacturing method and apparatus according to the present invention as described above, it is possible to realize significant streamlining compared to the conventional manual work-dependent situation.

[Brief explanation of the drawing]

The figures illustrate an embodiment of the present invention, and FIG. 1 is a plan view showing an overview, FIG. 2 is a front view showing an overview, FIG. Figure 4 is a sectional view showing the main parts of the bottoming position, Figure 5 is a perspective view of the bottoming position, Figure 6 is a sectional view showing the main parts of the drying position, and Figure 7 is a sectional view showing the main parts of the bottoming position.
The figure is a perspective view showing the main part of the discharge position, FIG. 8 is a plan view of the main part showing a modification example, and FIG. 9 is a front view of the main part showing a modification example. A...Loading position, B...Bending position, C...Framework position, D...Gluing position, E...
Bottoming position, F...drying position, G...discharging position,
a... Surrounding material, b... Bottom plate, 10... Conveying device,
20...Mold member, 30...Shooter, 40...
Pusher, 50... Cutting member, 60... Reversing support device, 61... Reversing member, 65, 66... Supporting member, 70... Upper guide, 80... Bending member, 90... Heating blade, 100...gluing roll,
110... bottom attaching device, 113... take-out member,
115,115... Conveyor with upper and lower tiers, 12
2...Press plate, 125...Bottom plate holder, 130...
Heating member, 140... Ejector, 142...
Feeder, 143... Conveyor, 144...
Recovered parts.

Claims (1)

[Scope of Claims] 1. A strip-shaped folding box circumferential material made of a thermoplastic resin foam that is supported upright in a straight line is conveyed by a rectangular mold member while being carried along a part of the material. The material is then bent into an L-shape or U-shape, and in the above-mentioned bent state is transported together with the mold member to the framework position, and at the framework position, the unbent part of the peripheral side material is bent along the mold member. , heat-seal the abutting parts of both ends of the circumferential side material to form a frame shape, apply glue to the end surface of the circumferential side material during transportation to the bottoming position by the mold member, and at the bottoming position, the bottom plate supply section The bottom plates supplied one by one are pressed against the gluing surface of the circumferential material to perform bottom bonding, and then conveyed to the drying position by the mold member, the heating member facing the bottom plate is brought into contact with the bottom plate, and the above-mentioned A method for manufacturing a folding box, characterized by drying the bottom joint of the peripheral side material. 2. The method for manufacturing a folding box according to claim 1, in which the circumferential side material includes a material having a V-groove for bending and having inclined cuts at both ends. 3. The conveying device that moves intermittently is equipped with rectangular mold members at regular intervals on which the circumferential side material for folding boxes made of thermoplastic resin foam can be placed along. At the framework position where the material is framed, there is a bending member that moves back and forth along the mold member and bends the peripheral material along the mold member, and a bending member that moves back and forth along the mold member, and a bending member that bends the peripheral material along the mold member, and a bending member that moves back and forth along the mold member, and a bending member that bends the peripheral material along the mold member. A heating blade that can be temporarily positioned for heat-sealing is provided, and a gluing roll for applying glue to the end surface of the circumferential material is provided in the middle of the transfer of the circumferential material by the mold member to the subsequent bottoming position, Furthermore, a bottoming device is provided at the bottoming position to take out and supply the bottom plates one by one and join the bottom plate to the end surface of the peripheral material, and at the next drying position, a heating member is placed in contact with the bottom plate to dry the joint. What is claimed is: 1. A folding box manufacturing apparatus, characterized in that a folding box manufacturing apparatus is provided with a discharging device for assembled folded boxes at a moving front end of the conveyance device. 4. The conveying device causes the horizontally fed band-shaped folding box circumferential material to stand up vertically on the rear side thereof,
The folding box manufacturing apparatus according to claim 3, comprising an inversion support device that can be placed along the mold member of the conveyance device. 5. The folding box manufacturing apparatus according to claim 3, wherein the bottom plates are taken out one by one by the bottom attaching device by vacuum suction using a suction cup. 6. The folding box manufacturing apparatus according to claim 3, wherein the ejection device is provided with a collecting member that eccentrically rotates and stands the folded boxes upright. 7. Manufacture of a folding box according to claim 3, wherein the mold member is mounted obliquely to the direction of movement of the conveying device when viewed from the plane so that the mold member moves with one corner portion at the beginning. Device. 8. The folding box manufacturing apparatus according to claim 3, wherein the mold member is attached along the traveling direction of the conveying device.