JP3387535B2 - Pressurizing device, pressurizing system, box manufacturing device using the same - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for pressurizing an object to be pressed having a step as uniformly as possible, a pressing system using the same, and an apparatus for manufacturing a synthetic resin box using the same.

[0002]

2. Description of the Related Art It is extremely difficult to apply an adhesive to manufacture a box using a material such as a polyethylene terephthalate sheet that cannot be heat-sealed, and the box is manufactured continuously. No technology has been established. The reason is that when a high-viscosity adhesive such as a hot-melt type is used, the adhesive pulls a thread, and when a solvent-based adhesive is used, the adhesive is applied to other places than necessary. This is because it is extremely difficult to carry out continuous treatment so as not to adhere. Further, it is also very difficult to bond the margins with a uniform adhesive force after applying the adhesive. The reason is as follows. The sheet of the development view shown in FIG. 1 is punched out from the sheet, the surfaces 1 and 3 are bent, then the surfaces 2 and 4 are bent, and at the same time, the surfaces 5 and 6 are bent in the opposite direction to obtain the state shown in FIG. Bend from the lines 9 and 11 into the shape shown in FIG. Faces 5 and 6 in the shape of FIG.
Adhesive is applied drop by drop to the surfaces 1 and 5 to bond surfaces 1 and 5 and surfaces 3 and 6, respectively. When the pressing pressure is released, the surface 13 and the surface 16 stand up at an angle of about 45 to 55 ° from the horizontal plane. At this stage, the adhesive is applied to the margin portion 7, and the surface 1
3 and stack and crimp. The pressure-bonded state at this time is also the state shown in FIG. 3. The overlapping condition of the sheets is as follows: A point is 4 sheets B point is 3 sheets C point is 2 sheets D point is 1 sheet E point is 0 sheets Changes to. However, in order to make the adhesive force of the overlap portion as uniform and reliable as possible, the pressure of the adhesive surface at the points A and B is uniform, and the pressure at the points C, D
It is necessary for the pressure roller to operate properly even when it moves to the point and the point E.

[0003]

[Object] A first object of the present invention is to provide a pressurizing system for press-bonding a margin portion of a synthetic resin box body in which a pressurizing device for pressurizing as uniformly as possible is incorporated into an object to be pressed having a step. There is a point to do.

The second object of the present invention is to provide a manufacturing system for a synthetic resin box body using the above-mentioned pressurizing system.

[0005]

[Structure] The first aspect of the present invention is (1) (A) (i)
Means for continuously discharging the adhesive in a linear shape toward the margin portion, (ii) A cylindrical body having an opening at one end or in the vicinity for receiving the adhesive flying in a linear shape And a suction device that also serves as a guide member for transferring the surface of the box body on which the cylindrical body faces the margin portion, (iii) the margin portion between (i) and (ii) above. And means for applying an adhesive, and
(B) A means for adhering the margin portion and the surface of the box body facing the margin portion, and a margin portion bonding system comprising: (2) (a) a conveying device for a synthetic resin box body folded from both sides; and (b) a cover. A pressure roller group having a displacement mechanism capable of responding to the step of the pressure body, which is provided below the pressure roller group, and presses the pressure body by sandwiching the pressure body between the belts. A manufacturing system of a synthetic resin box body characterized by comprising a pair of conveyor belts for carrying while carrying, and a pressurizing system consisting of a pressurizing device consisting of a lower conveyor belt supporting member. .

A second aspect of the present invention is: (1) (A) (a) An adhesive container having an opening that does not cause liquid leakage when the balls come into close contact with each other; (b) having a diameter smaller than the diameter of the opening. ,
A piston that passes through the center of the lid of the adhesive container and the center of the opening and contacts the ball top, and (c) is provided on the top of the adhesive container so that the piston top of the piston can slide closely. A cylinder, and (d) an adhesive dropping device comprising (a) means for bringing the ball into close contact with the opening of the adhesive container except when the piston is pushed down from the top, and (e) means for intermittently moving the piston up and down, ( B) means for transferring the adhered portion of the synthetic resin box body folded in the state of FIG. 2 to a position where the adhesive is dropped, (C) means for synchronizing the drop of the adhesive and the transfer of the box body, And (D) an adhesive dropping system (box bottom forming system) comprising means for folding and pressing the box in the state of FIG. 3, and (2) (A) (i) facing the margin of the box. The adhesive continuously and linearly And (ii) a cylindrical body having an opening at one end or in the vicinity thereof for receiving the adhesive flying linearly, and the cylindrical body opposes the margin portion. A suction device also serving as a guide member for transferring the surface of the box body to be transferred, (iii) a means for supplying a margin between the (i) and (ii), and an adhesive applying device comprising: B) A means for adhering the margin portion and the surface of the box body facing the margin portion, a margin portion bonding system, (3) (a) a conveyor device for a synthetic resin box body folded from both sides, and (b) an add-on member. A pressure roller group having a displacement mechanism capable of responding to the step of the pressure body, which is provided below the pressure roller group, and presses the pressure target body by sandwiching the pressure target body between the belts. A pair of conveyor belts for transport, and a lower one Pressurization system comprising a consisting emissions Bear belt support member pressing apparatus, and system for manufacturing a synthetic resin box body, characterized in that it is constituted by.

As a displacement mechanism capable of accommodating the step, it is the simplest to use a spring 82 as shown in FIG. 8 and FIG. 9, but in the case of more accurate correspondence, an air cylinder (air spring) system is used. Can be adopted.
The individual pressure rollers may be arranged so that the pressure applied thereto can be adjusted as needed. The spring fixes its upper end to, for example, a metal support 84,
The lower end is fixed to the roller support frame 83. These pressure roller groups press the box body 17 via the upper conveyor belt 86. The box 17 is supported by a lower conveyor belt 87 and a lower support 85.

The pressurizing system of the present invention comprises a transporting device for the synthetic resin box body 17 (shown by 94 and 96 in FIG. 11) folded on both sides, and at a substantially central portion thereof, the margin portion 7 is at the central portion. Since it is slightly biased to one side, it is composed of the pressurizing device (indicated by 95 in FIG. 11) shown in FIGS. 8 and 9 in a manner slightly biased to one side. The conveying devices 94 and 96 provided on both sides of the pressure device include, for example, the conveyor belts 86 and 8 of the pressure device.
It may be a conveyor belt that operates in synchronization with 7, but is not limited to this. The pressurizing device 95
In the first stage, it is necessary to use at least the pressurizing device of the present invention, but in the latter half, a conventional uniform pressure type pressurizing and conveying device can be used as required. INDUSTRIAL APPLICABILITY The pressurizing device and the pressurizing system of the present invention are useful not only for pressurizing the margin portion of the box body but also for pressurizing an object having a step.

[0009]

EXAMPLE A polyethylene terephthalate (PET) sheet was punched as shown in the development view of FIG. 1 and a crease line was inserted, and a normal box making system (corresponding to 90 in the block diagram of FIG. 10) was fed in the direction of the arrow. First,
Bend parts 1 and 3, then parts 2 and 3, and simultaneously parts 5 and 6 in opposite directions. In this state (see FIG. 2), the box body is introduced into the adhesive dropping device of the present invention (the one in which the folding pressure device is attached to the latter stage is shown as 91 in the block diagram of FIG. 10).

FIG. 4 is a cross-sectional view of the adhesive dropping device used in this embodiment, in which a shows the state when the adhesive is not dropped and b shows the state when the adhesive is dropped. . Hereinafter, an example of the system of the present invention will be described with reference to FIGS. Surface 5 of the box body corresponding to the portion to which the adhesive is dropped
When the detection is performed by the function of the sensor for notifying that # 6 and # 6 have reached the predetermined positions, the air valve 62 opens on the side of the line 63 for a certain period of time, and compressed air is sent from the air compressor to the air chamber 65 via the line 61. That is,
The air in the air chamber below the piston top 66 is
4 is exhausted by the action of the air valve 62, while the air pressure supplied from the line 63 pushes down the piston top 66. Then, the piston 67 serves as a ball 7 that seals the bottom opening of the solvent-type adhesive container 69.
Push 0 down. At this time, the solvent-based adhesive 68 flows down from the bottom opening by a predetermined amount, and one drop drops from the tip of the nozzle 72. The drop point is adjusted so that it is located at the center of each of the surfaces 5 and 6 of the box. After a lapse of a predetermined time, the air valve 62 causes air to flow in the line 64, so that the piston top portion 66 is pushed up by the air pressure applied from the lower portion of the air chamber, while the air in the air chamber above the piston top portion is discharged from the line. The air is discharged through 63 through the action of the air valve 62. As a result, the ball 70 has a spring 71.
The repulsive force and the backward movement of the piston 67 reseal the bottom opening of the solvent-type adhesive container 69. Each time this operation is repeated, one drop each of the solvent-type adhesive is appropriately applied to the surfaces 5 and 6 of the box body corresponding to the dropped portion of the adhesive. Of course, this adhesive dropping device is installed one by one at the locations corresponding to the surfaces 5 and 6 of the box body corresponding to the adhesive dropping portion. After the dropping is completed,
Faces 1 and 13 and faces 4, 6, 16 are faces 1 and 5 and face 3
By folding back to (1) and (6) (see FIG. 3) and then applying pressure for a short time, the surfaces 1 and 5 and the surfaces 3 and 6 are bonded to each other to form the bottom of the box. Such a folding back method is necessary to form a bottom portion having a shape such that the box body can be folded even after the bottom portion is formed (the polygonal line 10).
It is not possible to open it into a box by folding it in two from the point).

In this way, the bottom of the box is formed, but when the pressure for forming the bottom is released, the box is moved from the horizontal direction by the repulsive force of the synthetic resin sheet. Get up at an angle of about 45-55 °. In this state, the box is adhesive applied system (box body forming system)
(Indicated by 92 in the block diagram of FIG. 11). The box is sandwiched between belts 23 and 25, 24 and 26,
It is carried in the direction of the arrow in FIG. 3 while being supported by the belt 27. The margins 7 with the surfaces 13 and 16 of the box body are gradually folded again by being guided by the suction device / guide member 21, and the solvent-type adhesive is ejected from the ejection nozzle immediately before the margin 13 and the surface 13 overlap. The adhesive wets the margin portion 7, and subsequently the surface 13 and the margin portion 7 are laminated and conveyed to the next pressurizing system (indicated by 93 in the block diagram of FIG. 11). The adhesive applying device is shown in FIG.
~ 7. FIG. 6 is a side view showing a rough overall view, FIG. 5 is a cross-sectional view of a portion where the adhesive is being discharged, and FIG. 7 is a presser roller 32 to 45.
FIG. 3 is a schematic view showing a relative positional relationship between a suction device and a guide member. As shown in FIG. 5, the suction device / guide member 21
As described above, since it is necessary to slowly fold the surface 13 and the surface 16 of the box body and the margin portion 7 and to guide the surface 13 so that the surface 13 is always positioned above the margin portion 7, the folded box Box line 1 which is the center line of the body
It is provided at a position slightly offset to one side from 0, and has a structure that is slowly inclined in the traveling direction. The solvent-type adhesive that is continuously discharged from the discharge nozzle 50 has the margin portion 7 when the margin portion 7 exists.
However, when the overlap portion 7 does not exist, it directly enters the suction device through the opening 22 and is sucked through the recovery pipe 52, collected in the adhesive tank 53, and passed through the supply pipe 51. And is again supplied to the discharge nozzle 50.

After the adhesive is applied to the margin portion 7 of the box body by the margin portion adhesive system, the box body 17 folded as shown in FIG. 3 and folded from both sides is supplied to the pressurizing system shown in FIG. It 94 and 96 at both ends are box 1
A device for pressing and transporting 7 and a pressing device 95 shown in FIG. Although depending on the width of the margin portion 7, if about 10 pressure rollers having a length of 6 to 12 cm and a diameter of 2 to 4 cm are arranged side by side, the intended purpose can be achieved first.

[0013]

[Effect] By using the pressurizing device or the pressurizing system of the present invention, it is possible to pressurize the object to be pressed having a step relatively uniformly. Further, the synthetic resin box body manufacturing apparatus of the present invention has made it possible to continuously manufacture a transparent synthetic resin box body using an adhesive.

[Brief description of drawings]

FIG. 1 is a development view of a box body used in the present invention.

FIG. 2 shows a state in which the sheet of FIG. 1 is folded in a first stage for application to the apparatus of the present invention.

FIG. 3 shows a state in which the sheet of FIG. 2 is folded in a second stage and fed into the apparatus of the present invention for application to the apparatus of the present invention.

FIG. 4 is a cross-sectional view showing an example of the adhesive dropping device of the present invention, in which “a” is a state diagram when no adhesive is dropped, and “b” is a state diagram.
[Fig. 3] is a state diagram when an adhesive is dropped.

FIG. 5 is a cross-sectional view taken in the lateral direction to show an example of the adhesive application device of the present invention.

FIG. 6 is a cross-sectional view taken in the vertical direction to show an example of the adhesive application device of the present invention as a model.

FIG. 7 is a plan view showing an example of a mutual positional relationship between each roller and a suction device / guide member for controlling and inclining a belt in the present invention.

FIG. 8 is a perspective view showing an example of each pressure roller used in the pressure device of the present invention.

FIG. 9 is a partial cross-sectional view of the pressure device of the present invention.

FIG. 10 is a schematic view showing the arrangement of the pressure system of the present invention.

FIG. 11 is a block diagram of the box manufacturing system of the present invention.

[Explanation of symbols]

1 Side that forms the bottom of the box 2 One side that forms the bottom of the box 3 One side that forms the bottom of the box 4 One side that forms the bottom of the box 5 One side that forms the bottom of the box 6 One side that forms the bottom of the box 7 Glue to form the body of the box 8 end 9 Line 10 Line 11 Line 12 Line 13 One side forming the body of the box 14 One side forming the body of the box 15 One side forming the body of the box 16 One side that forms the body of the box 17 Box folded in the state shown in Fig. 3 21 Suction device and guide member 22 Suction port 23 belt 24 belts 25 belt 26 belt 27 belts 28 roller 29 roller 30 roller 31 Roll support member 32 holding roller 33 Hold roller 34 Hold roller 35 restraining roller 36 holding roller 37 Hold roller 38 Hold roller 39 Hold roller 40 restraining roller 41 restraining roller 42 Hold roller 43 Hold roller 44 restraining roller 45 holding roller 50 discharge nozzles 51 Supply piping 52 Recovery pipe 53 Adhesive tank 61 lines (for introducing compressed air) 62 air valve 63 lines (for air introduction and exhaust) 64 lines (for air introduction and exhaust) 65 air chamber 66 piston top 67 pistons 68 Adhesive 69 adhesive container 70 balls 71 spring 72 nozzles 73 cylinders 81 Pressure roll 82 Presser spring 83 Presser frame 84 Support member 85 Support member 86 conveyor belt 87 Conveyor belt 90 folding device 91 Adhesive dripping system 92 Adhesive applying device 93 Pressurizing device 94 Conveyor 95 Pressurizing device 96 Conveyor

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B31B 1/62 301 B05C 5/00 101 B05D 5/10 B29C 69/00

Claims (2)

(57) [Claims] (1) (A) (i) A means for continuously ejecting the adhesive in a linear shape toward the margin of the box body, (i)
i) A box made of a cylindrical body having an opening at one end or in the vicinity thereof for receiving the adhesive flying in a linear form, and the cylindrical body being opposed to the margin portion. A suction device also serving as a guide member for the surface to be transferred, (iii) a means for supplying a marginal portion between the (i) and (ii), an adhesive applying device comprising: (B)
A marginal portion bonding system including means for closely contacting the marginal portion and the surface of the box body facing the marginal portion, (2) (a) a conveying device for a synthetic resin box body folded from both sides, and (b) an object to be pressed. Pressure roller group having a displacement mechanism capable of accommodating the step of the pressure roller, which is provided below the pressure roller group, and conveys while pressing the pressure target body by sandwiching the pressure target body between the belts. A system for manufacturing a synthetic resin box body, comprising a pair of conveyor belts, and a pressure system including a pressure device including a lower conveyor belt support member. 2. (1) (A) (a) An adhesive container having an opening for preventing liquid leakage when the balls are in close contact with each other,
(B) A piston having a diameter smaller than the diameter of the opening and provided at the center of the lid of the adhesive container and the ball contacting the top of the ball through the center of the opening, and (c) provided on the upper part of the adhesive container. A cylinder in which the top of the piston of the piston can slide closely, (d) means for bringing the ball into close contact with the opening of the adhesive container except when the ball is pushed down by the piston from the top, and (e) intermittent Adhesive dropping device comprising means for moving the piston up and down, (B) means for transferring the adhered portion of the synthetic resin box folded in the state of FIG. 2 to a position where the adhesive is dropped, (C) adhesion An adhesive dropping system (box bottom forming system) including a means for synchronizing the dropping of the agent and the transfer of the box body, and (D) a means for folding and pressing the box body in the state of FIG. ) (A) (i) Means for continuously discharging the adhesive in a linear shape toward the margin, (ii) A cylindrical body having an opening at one end or in the vicinity thereof for receiving the adhesive flying in a linear shape And a suction device that also serves as a guide member for transferring the surface of the box body on which the cylindrical body faces the margin portion, (iii) the margin portion between (i) and (ii) above. And (B) means for adhering the margin portion and the surface of the box body facing the margin portion, and a margin portion bonding system comprising (3) (a) folded from both sides. And a pressure roller group having a displacement mechanism capable of accommodating the stepped portion of the object to be pressed, and a transfer device for the synthetic resin box body, which is provided below the pressure roller group and is pressed between the belts. By holding the body, the body to be pressurized can be conveyed while being pressurized. Production system of the synthetic resin box body, characterized in that it is constituted comprising pressurized system, by a pair of conveyor belts, and consisting of lower conveyor belt support member pressure device.