CN114228247A

CN114228247A - Hemming device and hemming method

Info

Publication number: CN114228247A
Application number: CN202111059116.9A
Authority: CN
Inventors: 胡纯军; 董阳; 黄正烈; 张双印; 施红星
Original assignee: Sinotecho Wuhan Intelligent Technology Co Ltd
Current assignee: Sinotecho Wuhan Intelligent Technology Co Ltd
Priority date: 2021-09-09
Filing date: 2021-09-09
Publication date: 2022-03-25

Abstract

The invention discloses a flanging device and a flanging method, which are used for flanging an adhesive body and comprise the following steps: the base provides a supporting function; the flanging assembly comprises a fixed part and a movable part which are oppositely arranged, and a forming groove is formed between the fixed part and the movable part; the upper die is arranged above the forming groove, is movably arranged along the vertical direction and is used for carrying the bonding body to be pressed downwards into the forming groove; the lower die can be movably arranged along the upper part and the lower part of the forming groove so as to clamp the bonding body together with the upper die in the upper direction and the lower direction; the movable part can be movably arranged along the left-right direction, so that when the movable part moves leftwards, the surface paper corresponding to the movable part in the bonding body in the forming groove is bonded with the gray board. The invention does not need an auxiliary positioning device and a pressing device, reduces the occupied space, and sticks the surface paper to be folded with the gray board by moving the movable part leftwards, and is simultaneously suitable for the surface paper of the enclosure frame with the requirements of full coverage and half coverage.

Description

Hemming device and hemming method

Technical Field

The invention relates to the technical field of paper box processing, in particular to a folding device and a folding method.

Background

The carton is a packing box for containing small cigarette cases, and comprises a leather case and an enclosing frame, wherein the enclosing frame is usually used as a main body support in the carton type of the carton, and the enclosing frame comprises a gray plate and facial tissue. In the existing production process of the enclosure frame, the surface paper is firstly pasted with glue water on the upper surface of the surface paper through a pasting machine, and then the surface paper is conveyed to a positioning station by a conveying belt to be pasted with a strip-shaped gray plate to form a bonding body. According to the scheme, in the subsequent process, the surface paper to be folded outside the gray board in the adhesive body needs to be folded and adhered with the gray board. The requirements for folding edges of the surface paper of the enclosure frame in different box types are different, the surface paper to be folded is required to completely cover the gray plate, the surface paper to be folded is required to cover the gray plate in a half mode, and no gap exists between the edge of the gray plate and the surface paper.

The prior edge folding technology is that after the adherend is positioned on the platform, the facial tissue to be folded stretches out of the platform, then the adherend is compressed tightly, a scraper knife is arranged on the side surface of the platform, so that the scraper knife vertically ascends to vertically fold the stretched facial tissue, when the scraper knife moves to be parallel and level with the top surface of the gray board, the facial tissue is horizontally shoveled by the scraper knife to the gray board, and the facial tissue is adhered to the upper surface of the gray board due to the glue on the facial tissue. However, the scheme adopts a pressing mechanical structure to press the adhesive body from the upper part, so that the space above the adhesive body is occupied, and the scheme cannot be applied if the part to be folded of the facial tissue is large or completely covered; in addition, the existing device adopting the scheme has more mechanical parts such as a positioning structure, a pressing structure and the like, and the supplied materials of the bonding body need to be respectively positioned and pressed and folded through a plurality of stations, so that the occupied area of the whole device is too large, the cost of mechanical equipment is increased, and the marginal cost of using the equipment is also increased. Therefore, the inventors are keenly demanding improvements to this solution.

Disclosure of Invention

The invention mainly aims to provide a folding device, which aims to replace the traditional folding scheme, so that the problem that the traditional folding device is not suitable for full-coverage facial tissues to be folded and has a small application range is solved, the problems of more stations and steps required by the process method are reduced, and a device with higher integration level and smaller floor area is more conveniently designed to realize the process.

In order to achieve the above object, the present invention provides a hemming device for hemming an adherend, comprising:

a hemming device for hemming an adherend, comprising:

the base provides a supporting function;

the flanging assembly comprises a fixed part and a movable part which are oppositely arranged, and a forming groove is formed between the fixed part and the movable part;

the upper die is arranged above the forming groove, is movably arranged along the vertical direction and is used for carrying the bonding body to be pressed downwards into the forming groove; and the number of the first and second groups,

the lower die can be movably arranged along the upper part and the lower part of the forming groove so as to clamp the bonding body together with the upper die to move in the groove;

the movable part can be movably arranged along the left-right direction, so that when the movable part moves leftwards, the surface paper corresponding to the movable part in the bonding body in the forming groove is bonded with the gray board.

Furthermore, the upper surface of the lower die is provided with a suction hole, and the suction hole is used for forming negative pressure under the action of a vacuum generating device so as to adsorb and fix the adhesive body.

Further, the lower surface of the upper die is provided with a suction hole, and the suction hole is used for forming negative pressure under the action of a vacuum generating device so as to adsorb and fix the adhesive body.

Furthermore, the left side face and the right side face of the upper die are obliquely arranged in a direction of being close to each other from bottom to top.

Furthermore, a section of the movable part is provided with a notch, and the notch corresponds to the gray board part without being covered by the face paper on the adhesive body.

Furthermore, the flanging device also comprises two air blowing parts, wherein the two air blowing parts are arranged on the outer side of the forming groove, so that the upper die can press the bonding body downwards into the forming groove and blow upwards to enable the facial tissues on the left side and the right side of the bonding body to be tilted upwards.

Furthermore, the upper half part of the inner side wall of the fixed part and/or the movable part is obliquely arranged from bottom to top.

Further, the movable part comprises a scraper knife arranged on the base and a driving component for driving the scraper knife to move in a reciprocating manner.

A hemming method using any of the hemming devices described above, comprising the steps of:

the upper die carries the supplied material of the bonding body to move towards the lower die, and the supplied material of the bonding body is contacted with the lower die; the upper die and the lower die clamp the bonding body to enter the forming groove so as to turn the surface paper to be folded on two sides of the bonding body upwards;

stopping after the upper surface of the body to be bonded is flush with the lower surface of the movable part;

moving the upper die upward to separate the bonded body;

and moving the movable part towards the fixed part to shovel and fold the facial tissue to be folded on one side of the movable part until the facial tissue to be folded is bonded with the upper surface of the bonding body.

Furthermore, after the edge-folding surface paper is bonded with the upper surface of the bonded body, the movable part waits for immobilization, and the lower die is lifted upwards to extrude and remove bubbles from the bonded body.

According to the technical scheme, the forming groove is formed through the edge folding assembly, the adhesive body is pressed into the forming groove when the upper die moves downwards, the facial tissue to be folded in the adhesive body is pre-folded, then the upper die is separated from the adhesive body to free the space above the adhesive body, the adhesive body is supported and fixed by the lower die, and the facial tissue corresponding to the movable portion in the adhesive body is attached to the gray board when the movable portion carries out edge scraping to the fixed portion movably. The edge folding device does not need an auxiliary positioning device and a pressing device, thereby greatly reducing the number of mechanical structures and the number of stations and the occupied area; and when the space above the bonding body is liberated, the movable part moves towards the fixed part to adhere the surface paper to be folded and the gray board, even when the processing requirement of the fully-covered surface paper is met, the movable part can completely push the surface paper to the fixed part to enable the surface of the gray board to be processed to realize full coverage, and the processing range of the frame folding process is expanded from a single range of half coverage to both half coverage and full coverage. Furthermore, the paper to be folded is pre-folded into a substantially vertical state by the forming groove and then is attached to the upper surface of the gray board by head-on impact of the movable part, so that no gap exists at the folding part of the paper to be folded, which corresponds to the gray board, because the groove is pre-folded and the gap between the primary paper and the side wall of the gray board is extruded, and the gap between the primary paper and the gray board is further reduced by pulling the paper by the movable part for the second time.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic view of a half-covered adherend to be hemmed according to an embodiment of the invention;

FIG. 2 is a schematic view of a half-covered adherend to be hemmed before entering a forming groove according to an embodiment of the invention;

FIG. 3 is a schematic view of the half-covered adherend to be hemmed in FIG. 2 in a pre-folded state;

FIG. 4 is a schematic view of the movable portion of FIG. 3 in a state of being moved to the left;

FIG. 5 is a schematic view of the embodiment of the invention in a state of fully covering the molded surface to be flanged;

FIG. 6 is a schematic view of the movable portion of FIG. 5 after being moved to the left;

FIG. 7 is an enlarged view of portion A of FIG. 6;

FIG. 8 is a schematic perspective view of an embodiment of a hemming device provided in the present invention;

the reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The carton is one of the common cartons, and the carton comprises a leather shell and a surrounding frame, wherein the surrounding frame is usually used as a main body support in the carton type of the carton, and the surrounding frame comprises a gray board and facial tissue. In the existing production process of the enclosure frame, the surface paper is firstly pasted with glue water on the upper surface of the surface paper through a pasting machine, and then the surface paper is conveyed to a positioning station by a conveying belt to be pasted with an ash plate to form a bonding body. According to the scheme, in the subsequent process, the surface paper to be folded outside the gray board in the adhesive body needs to be folded and adhered with the gray board. The requirements for folding the surface paper of the enclosure frame in different box types are different, some box types require the surface paper to be folded to fully cover the ash plate, some box types require the surface paper to be folded to half cover the ash plate (as shown in figure 1), and the edge of the ash plate and the surface paper are required to have no gap uniformly.

The prior edge folding technology is that after the adherend is positioned on the platform, the facial tissue to be folded stretches out of the platform, then the adherend is compressed tightly, a scraper knife is arranged on the side surface of the platform, so that the scraper knife vertically ascends to vertically fold the stretched facial tissue, when the scraper knife moves to be parallel and level with the top surface of the gray board, the facial tissue is horizontally shoveled by the scraper knife to the gray board, and the facial tissue is adhered to the upper surface of the gray board due to the glue on the facial tissue. However, the scheme adopts a pressing mechanical structure to press the adhesive body from the upper part, so that the space above the adhesive body is occupied, and the scheme cannot be applied if the part to be folded of the facial tissue is large or completely covered; in addition, the existing device adopting the scheme has more mechanical parts such as a positioning structure, a pressing structure and the like, and the supplied materials of the bonding body need to be respectively positioned and pressed and folded through a plurality of stations, so that the occupied area of the whole device is too large, the cost of mechanical equipment is increased, and the marginal cost of using the equipment is also increased.

In view of this, the present invention provides a hemming device for processing an adherend in the state shown in FIG. 1,

the adhesive body 200 is structurally shown in fig. 1 and comprises an ash plate 220 and facial tissues 210, wherein the ash plate 220 is adhered to the upper middle position of the facial tissues 210, the width of the ash plate 220 is smaller than that of the facial tissues 210, the middle part of the facial tissues 210 is adhered to the lower surface of the ash plate, the facial tissues 240 to be folded are positioned on two sides of the ash plate 220, and the folding device 100 in the application aims to complete folding of the facial tissues 240 to be folded on one side and adhere to the upper surface of the ash plate 220. According to the box-making route of the box-type of the box-.

Taking the adhesive body required by the half-covered folding shown in fig. 1 as an example, referring to fig. 2 to 4, the folding device 100 includes a base, a folding assembly 1, an upper die 2 and a lower die 3, the folding assembly 1 includes a fixed portion 11 and a movable portion 12 respectively disposed at the left and right sides of the folding area 5, and a forming groove 13 is formed between the fixed portion 11 and the movable portion 12; the upper die 2 is arranged above the forming groove 13 and is movably arranged along the vertical direction, so that the bonding body 200 is pressed downwards into the forming groove 13 when the upper die 2 moves downwards to be close to the forming groove; the lower die 3 is arranged between the fixed part 11 and the movable part 13, is movably provided with a movable bottom surface forming a forming groove along the vertical direction, and upwards supports the adhesive body 200 at the flanging area 5; the movable portion 12 is movably disposed along the left-right direction, so as to bond the facial tissue 240 to be folded corresponding to the movable portion 12 in the bonding body 200 in the forming groove 13 with the gray board 220.

Forming a forming groove 13 through the folding assembly 1, pressing the adhesive body 200 into the forming groove 13 when the upper die 2 moves downwards, pre-folding the surface paper 240 to be folded in the adhesive body 200, then moving the upper die 2 upwards to a position far away from the adhesive body 200, supporting and fixing the adhesive body 200 by the lower die 3, and attaching the surface paper 240 to be folded corresponding to the movable part 12 in the adhesive body 200 to the gray plate 220 when the movable part 12 moves leftwards, wherein the folding device 100 does not need an auxiliary positioning device and a pressing device, greatly reduces the occupied space, and attaches the surface paper 240 to be folded to the gray plate 220 by moving the movable part 12 leftwards, is simultaneously suitable for the surface paper 210 of the enclosure frame required by full coverage and half coverage, and is shown in fig. 4 to 7. It should be noted that the lower surface of the upper mold 2 and the upper surface of the lower mold 3 are respectively adapted to the width of the gray plate 220 in the adhesive body 200, and the width of the forming groove 13 is also adapted to the width of the gray plate 220.

The lower die 3 supports the adhesive body 200 upwards, the upper die 2 presses the adhesive body 200 downwards, the upper die 2 and the lower die 3 move downwards together, the pressure of the upper die 2 is greater than the supporting force of the lower die 3, so that the adhesive body 200 moves downwards, and the upper die 2 and the lower die 3 are driven to keep floating together, so that the posture of the adhesive body 200 in the forming process is stable, and better forming quality is obtained.

Further, the upper surface of the lower mold 3 and the lower surface of the upper mold 2 are provided with suction holes for forming negative pressure under the action of a vacuum device to adsorb and fix the adhesive body 200.

The upper die sucks the adhesive body 200 from the previous station, the suction holes in the upper die suck the adhesive body 200 from the upper surface of the ash plate 220 and transfer the supplied material to the upper part of the forming groove 13, the adhesive body 200 is clamped by the suction holes in the upper die and the lower die 3 in a combined force manner before entering the forming groove 13, then the adhesive body 200 and the lower die fall along the forming groove 13 together until the upper surface of the falling ash plate 220 is flush with the lower surface of the movable part 12, the vacuum generating device of the upper die 2 is closed, the negative pressure is lost, the upper die is released from the forming groove 13, the negative pressure in the lower die 3 is maintained, and the adhesive body 200 is fixed from the bottom. Thus, the space above the gray plate 220 (and the space above the molding groove) is completely released before the movable portion 12 is moved. Further, as shown in fig. 2-3, the left and right side surfaces of the upper die 2 are inclined from bottom to top in a direction approaching each other. Since the glue is coated on the upper side of the paper 240 to be folded on the two sides of the adhesive body 200, the left and right sides of the upper die 2 are inclined from bottom to top in a direction approaching each other in order to avoid the glue adhering to the upper die 2. The paper 210 coated with glue warps and when the adhesive body 200 is pre-folded upwards in the forming groove 13, the left and right side surfaces of the upper die 2 are inclined from bottom to top in a direction approaching each other, which helps to prevent the paper 210 from sticking to the left and right side surfaces of the upper die 2.

Further, referring to fig. 2, the hemming device 100 further includes two air blowing portions 4, and the two air blowing portions are disposed at two sides of the whole of the fixed portion 11 and the movable portion 12 to blow air upwards in the process that the upper die 2 presses the adhesive body 200 downwards into the forming groove 13, so that the face paper 210 at the left and right sides of the adhesive body 200 is tilted upwards.

Since the surface paper 210 is coated with the glue, the surface paper 210 is soaked by the glue, the surface paper 240 to be folded at two sides of the adhesive body 200 is easy to be curled and deformed under the action of the glue, the surface paper 240 to be folded at two sides is blown upwards through the two blowing parts 4, and the surface paper 240 to be folded is prevented from being excessively curled and stuck to the fixing parts 11 and/or the movable parts 12 at two sides due to deformation when the adhesive body 200 enters the forming groove 13. Here, the air blowing part may be provided on the upper side of the fixed part 11 and the movable part 12, or may be provided on a side where the fixed part 11 and the movable part 12 are away from each other.

Similarly, the same means of this technique is to provide the suction parts on both sides of the upper mold 2, which is well known to those skilled in the art with reference to the drawings.

Further, the fixed portion 11 and the movable portion 12 have an inner side wall 14, and an upper half portion of the inner side wall 14 is inclined from bottom to top to an outer side of the forming groove to form a V-shaped flaring structure. Through setting up V type flaring structure, help playing the effect of the guide of stepping down when the adherend 200 gets into the shaping recess 13 on the one hand, on the other hand also can realize getting into the in-process of shaping recess 13 at adherend 200 if the position by the skew error, can be through slope setting inside wall 14 and last mould 2 combined action, guide when the V type flaring portion through shaping recess 13 is rectified.

It should be noted that, in another embodiment, the inner sidewall 14 of the fixing portion 11, the whole of the inner sidewall 14 is inclined from bottom to top to the outer side of the forming groove, which is the case in order to deal with the processing scheme of fully covering facial tissue. Referring to fig. 5-7, when the width of the face paper 240 to be folded is greater than that of the gray plate 220, after the face paper is folded, the process requires that the face paper 240 to be folded completely cover the gray plate 220 and stick the face paper on the opposite side. As shown in fig. 5, in the process of turning the surface paper to be folded by 90 °, if the surface paper on the opposite side is in a vertical state, the top edge of the surface paper on the opposite side is stuck and is rolled into the range of the forming groove, and an overlapped defective product is formed. Therefore, after the inner wall 14 of the fixed portion is entirely disposed obliquely, the opposite side tissue is firstly laid obliquely on the inner wall on the left side, and when the upper surface of the gray plate 200 is flush with the lower surface of the movable portion 12, the movable portion moves leftwards to push the opposite side tissue to be adhered to the opposite side tissue (as shown in fig. 6 and 7). Therefore, the left inner sidewall is preferably inclined over the entire surface, and the right inner sidewall is preferably inclined at the upper half portion.

Further, as shown in fig. 8, the fixed portion 11 is preferably a vertically-arranged baffle, and the movable portion 12 includes a scraper knife and a driving cylinder mounted on the base; the driving cylinder drives the scraper knife to move left and right.

Through setting up left fixed part 11 for the baffle, right side movable part 12 is the spiller, constitutes the lateral wall of shaping recess 13 jointly by the medial surface that baffle and spiller are close to each other, and the spiller is along controlling to the activity under the drive that drives actuating cylinder for adherend 200 gets into shaping recess 13 and rolls over the back in advance, directly makes the facial tissue 240 that waits to fold on right side turn over left by the spiller removal left and turn over left with the hawk 220 and paste fixedly. The device has the advantages of simple structure, high utilization rate of the scraper knife, small occupied space and low cost, and can meet the folding requirements of the adherends 200 with various sizes. Here, the air cylinder may be a driving component such as a lead screw or an electric push rod.

Further, with reference to fig. 1 and 8, according to the current process route of the enclosure, the ash plate 220 includes four sections, one of the four sections is an exposed section 230, and a corresponding portion of the movable portion 12 is provided with a notch, so as to avoid the exposed section 230, and avoid scraping the exposed section 230 of the ash plate when the movable portion retracts, even materials are deflected or damaged.

The invention also provides a flanging method using the flanging device, which comprises the following steps:

step S10: the upper die 2 carries the adhesive body 200 to move towards the lower die 3, and the adhesive body 200 is contacted with the lower die 3; at this time, the upper surface of lower die 3 is higher than or equal to the top of hemming assembly 1.

Step S20: the upper die 2 and the lower die 3 clamp the bonding body 200 to enter the forming groove 13 so as to fold the surface paper 240 to be folded at the two side edges of the bonding body 200 upwards; at this time, the upper die 2 presses the lower die 3 together downward.

Before this step, the facial tissue 240 to be folded can be blown to make the facial tissue 240 to be folded tilt to a small angle. In this step, it is also possible to include a small step: if the posture of the upper die 2 before carrying the adhesive body 200 is not correct, the inner side surface of the fixed part and/or the movable part is corrected in the process of entering the forming groove 13;

step S30: the upper surface of the gray plate 220 in the upper mold 2 and the lower mold 3 clamping the adherend 200 is flush with the lower surface of the movable part 12;

step S40: moving the upper mold 2 upward away from the adherend 200; at this time, the lower mold 3 sucks the lower surface of the adherend 200.

In concrete implementation, the upper die 2 is moved upwards to push the paper 240 to be folded to be adhered to the gray board 220 for the subsequent movable part 12, so that the movable part 12 is prevented from interfering with the upper die 2, and the paper 240 to be folded is prevented from being adhered to the upper die 2.

Step S50: the movable portion 12 is moved leftward until the face paper 240 of the adherend 200 corresponding to the movable portion 12 is adhered to the paperboard.

In specific implementation, by moving the movable portion 12 leftward, the right side paper 240 to be folded can be directly folded to be adhered to the gray board 220 under the action of the lower surface of the movable portion 12 and the inner side surface of the fixed portion.

When the movable part 12 moves towards the fixed part and folds the edge of the facial tissue 240 to be folded, the horizontal position of the movable part 12 can be kept still, the lower die 3 is lifted upwards, the lower die 3 and the movable part jointly extrude the folded surrounding frame, and the effect of removing bubbles is achieved.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A hemming device for hemming an adherend, comprising:

the base provides a supporting function;

2. A hemming device according to claim 1 wherein the lower mold has a suction hole formed on an upper surface thereof for forming a negative pressure by a vacuum generating means to suck and fix the adherend.

3. The hemming device of claim 1 wherein the lower surface of the upper mold is provided with a suction hole for forming a negative pressure by a vacuum generating device to suck and fix the adherend.

4. The hemming device of claim 1 wherein left and right side surfaces of the upper die are inclined in a direction approaching each other from bottom to top.

5. The hemming device of claim 1 further comprising two blowing parts provided outside the forming groove to blow upward before the upper mold presses the adhesive body downward into the forming groove, so that the face papers on the left and right sides of the adhesive body are tilted upward.

6. The hemming device of claim 1 wherein at least an upper half of the inner side wall of the fixed and/or movable section is inclined outwardly from bottom to top.

7. The hemming device of claim 1 wherein the movable portion includes a blade mounted to the base and a drive assembly to drive the blade to reciprocate.

8. A hemming device according to claim 1 wherein a section of the movable portion is provided with a notch corresponding to a portion of the blank on the adherend not covered with the face paper.

9. A method of flanging using a flanging device as claimed in any of claims 1 to 8, characterized in that it comprises the following steps:

moving the upper die upward to separate the bonded body;

10. A method of hemming according to claim 9 further comprising the steps of:

after the edge-folding surface paper is bonded with the upper surface of the bonding body, the movable part waits for immobilization, and the lower die is lifted upwards to extrude and remove bubbles from the bonding body.