Processing method for manufacturing composite leather sheath based on hot working production system

Abstract

The invention provides a processing method for manufacturing a composite leather sheath based on a hot working production system. The processing method comprises the following steps: respectively obtaining an upper skin material, a lower skin material, a foam body and an anti-wrinkling hot melt film; the upper skin material, the lower skin material and the foam body are placed in a gluing area of a glue sprayer for gluing operation; a lower skin material, an anti-wrinkling hot melt film, a foam body and an upper skin material are sequentially stacked in the mounting area of the stacked mounting plate, and the stacked mounting plate on which the leather sheath to be pressed is placed is subjected to hot pressing operation. The lower skin material is provided with the hot melt film placing area, so that the anti-wrinkling hot melt film can be conveniently placed, the position of the anti-wrinkling hot melt film is not easy to deviate, and the bottom part is not easy to wrinkle; compared with the adopted paperboard, hard paper, kraft paper and the like, the crease-resistant hot-melt layer formed after the crease-resistant hot-melt film is melted and cooled can provide the flexibility of the bottom of the composite leather sheath; and the laminated mounting plate is provided with a fixing column, so that the condition that the upper skin material or the lower skin material deviates can be prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of leather case manufacturing, and in particular to a processing method for manufacturing a composite leather case based on a thermal processing production system. Background Art

[0002] Existing leather cases can generally be used in a variety of scenarios such as car seats, keyboard armrests, and medical hand pads to reduce the user's muscle fatigue. In the existing production plan for leather cases, when there is no support between the lower surface leather and the foam, the bottom of the leather case is easily squeezed and deformed, causing the bottom to wrinkle and making the bottom surface flat.

[0003] In order to prevent the bottom of the leather case from wrinkling, some companies add cardboard, hard paper or kraft paper between the lower surface material and the foam as an anti-wrinkle layer to support the structural strength of the bottom and prevent wrinkling. However, the cardboard, hard paper or kraft paper used is relatively hard. When the above paper is placed between the lower surface material and the foam, even if the wrinkling problem of the bottom surface is solved, the softness of the bottom of the leather case is still poor.

[0004] In addition, how to place the anti-wrinkle layer is also a problem. If the anti-wrinkle layer is offset, it is easy for the anti-wrinkle layer and the bottom surface of the foam to not be completely bonded during hot pressing. This causes part of the bottom of the foam to directly contact the lower surface material, and this part will also form wrinkles due to external force.

[0005] If the existing leather case assembly method is not assisted by any tools, it is easy for the lower leather material to have an angle or position deviation during the stacking process, and it is also necessary to use the human eye to determine whether the edge of the upper leather overlaps with the edge of the lower leather material and does not protrude. This results in a long time required to stack the leather cases to be pressed, which in turn makes the production efficiency of the leather cases low.

[0006] Therefore, how to manufacture a leather case that can ensure that its bottom is not easy to wrinkle, can also ensure the softness of its bottom, and also needs to ensure that the edge parts of the upper leather and the lower leather can overlap is still a problem that technicians need to solve. Summary of the invention

[0007] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a method for manufacturing a composite leather case based on a thermal processing production system, which is not prone to wrinkling and unevenness of the bottom surface, can ensure the softness of the bottom, and is not prone to displacement of the upper or lower leather layers.

[0008] The purpose of this disclosure is achieved through the following technical solutions:

[0009] A processing method for making a composite leather case based on a thermal processing production system, wherein the composite leather case is made by using a thermal processing production system, wherein the composite leather case comprises an upper leather layer, a foam layer, an anti-wrinkle hot-melt layer and a lower leather layer which are bonded in sequence, and an edge portion of the upper leather layer is bonded to an edge portion of the lower leather layer;

[0010] The thermal processing production system comprises:

[0011] A glue spraying machine, wherein the glue application area of ​​the glue spraying machine is used to place the upper surface material, the lower surface material and the foam body respectively, and the glue spraying machine is used to perform surface glue application on the upper surface material, the lower surface material and the foam body respectively;

[0012] A stacking installation plate, the stacking installation plate is used to sequentially stack the lower surface leather material, the anti-wrinkle hot melt film, the foam body and the upper surface leather material to form a leather case to be pressed together, the stacking installation plate has a contour forming area, the contour forming area is used to accommodate the part of the leather case to be pressed together, and the stacking installation plate is provided with a plurality of fixing columns;

[0013] A heat press machine, used for heat pressing the leather cover to be pressed;

[0014] The processing method comprises:

[0015] Respectively obtain an upper surface material, a lower surface material, a foam body and an anti-wrinkle hot-melt film, wherein the upper surface material is provided with a first fixing hole, the lower surface material is provided with a second fixing hole, and the lower surface material has a hot-melt film placement area for being provided corresponding to the anti-wrinkle hot-melt film;

[0016] Placing the upper skin material, the lower skin material and the foam body in the gluing area of ​​the glue spraying machine for gluing operation;

[0017] The glued lower surface material, the anti-wrinkle hot-melt film, the glued foam body and the glued upper surface material are sequentially stacked on the stacking mounting plate to form a leather cover to be pressed, wherein the anti-wrinkle hot-melt film is placed in the hot-melt film placement area, and the fixing column is sequentially inserted into the second fixing hole and the first fixing hole;

[0018] The stacked mounting plate with the leather cover to be pressed is placed in a hot press to perform hot pressing operation to form a composite leather cover.

[0019] In one of the embodiments, the glued lower surface material, the anti-wrinkle hot melt film, the glued foam body and the glued upper surface material are sequentially stacked on the stacking mounting plate to form a leather cover to be pressed, including: the glued surface of the lower surface material is facing the anti-wrinkle hot melt film, and the glued surface of the upper surface material is facing the foam body.

[0020] In one embodiment, the cross-sectional area of ​​the anti-wrinkle hot-melt film is equal to that of the foam body.

[0021] In one embodiment, the cross-sectional area of ​​the hot-melt film placement area is equal to the cross-sectional area of ​​the anti-wrinkle hot-melt film.

[0022] In one embodiment, the cross-sectional area of ​​the contour forming zone is smaller than the cross-sectional area of ​​the upper surface material and / or the lower surface material, and the cross-sectional area of ​​the contour forming zone is larger than the cross-sectional area of ​​the anti-wrinkle hot melt film and / or the foam body.

[0023] In one of the embodiments, placing the upper surface material, the lower surface material and the foam body in the gluing area of ​​the glue sprayer for gluing operation includes: placing the upper surface material in the gluing area of ​​the glue sprayer for single-sided gluing operation; placing the lower surface material in the gluing area of ​​the glue sprayer for single-sided gluing operation; placing the foam body in the gluing area of ​​the glue sprayer for double-sided gluing operation.

[0024] In one embodiment, the gluing area includes a first gluing area, a second gluing area, a third gluing area and a fourth gluing area. The first gluing area is used to place the upper surface material, the second gluing area is used to place the lower surface material, and the third gluing area and the fourth gluing area are both used to place the foam body.

[0025] In one embodiment, placing the leather case to be pressed in a heat press for heat pressing includes:

[0026] Placing the leather cover to be pressed on the hot pressing lower die of the hot press;

[0027] Heating the hot pressing upper mold of the hot pressing machine and the hot pressing lower mold of the hot pressing machine;

[0028] When the temperature of the hot pressing upper mold reaches a first predetermined value, and the temperature of the hot pressing lower mold reaches a second predetermined value, the hot pressing operation is performed.

[0029] In one embodiment, the first predetermined value is 145±10°C.

[0030] In one embodiment, the second predetermined value is 125±10°C.

[0031] In one embodiment, the upper skin material, the lower skin material and the foam body are placed in the gluing area of ​​the glue spraying machine for gluing, and then the process further includes:

[0032] The upper surface material, the lower surface material and the foam body after gluing are baked.

[0033] In one embodiment, the thermal processing production system further includes a cooling and cutting machine, which is used to cool and edge-cut the leather cover after heat pressing;

[0034] Placing the stacked mounting plate with the leather cover to be pressed on a hot press to perform hot pressing to form a composite leather cover, and then further comprising:

[0035] The composite leather cover is subjected to a cooling edge cutting operation.

[0036] Compared with the prior art, the present invention has at least the following advantages:

[0037] 1. The composite leather case is made of a thermal processing production system, in which the lower surface material has a hot melt film placement area, which is convenient for placing the anti-wrinkle hot melt film. In this way, the anti-wrinkle hot melt film is not easily displaced, so that the anti-wrinkle hot melt film melts to form a colloid, and then cools to form an anti-wrinkle hot melt layer, which is in full contact with the lower half of the leather layer and the foam layer, and is not prone to wrinkles in the bottom part, so that the bottom of the composite leather case has better flatness.

[0038] 2. This solution uses an anti-wrinkle hot-melt film. Compared with the cardboard, hard paper, kraft paper, etc. used in the prior art, the anti-wrinkle hot-melt film forms an anti-wrinkle hot-melt layer after melting and cooling, which can provide softness to the bottom of the composite leather case, that is, the bottom has better softness.

[0039] 3. The stacking installation plate has a fixing column to facilitate the fixing of the upper surface material and the lower surface material, to prevent the upper surface material or the lower surface material from shifting when the lower surface material, the anti-wrinkle hot melt film, the foam body and the upper surface material are stacked in sequence, and to save the time required for stacking the layers into the leather cover to be pressed. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 It is a flow chart of a processing method for manufacturing a composite leather case based on a hot processing production system in one embodiment;

[0042] Figure 2 Figure 1 A structural cross-sectional view of a composite leather case manufactured in a processing method for manufacturing a composite leather case based on a thermal processing production system is shown;

[0043] Figure 3 for Figure 2An exploded structural diagram of the composite holster shown;

[0044] Figure 4 A schematic diagram of the structure of a glue spraying machine in a hot processing production system in one embodiment;

[0045] Figure 5 A schematic diagram of the structure of a stacked mounting plate of a thermal processing production system in one embodiment;

[0046] Figure 6 A schematic diagram of the structure of a hot press machine of a hot processing production system in one embodiment;

[0047] Figure 7 It is a schematic diagram of the structure of a cooling and cutting machine in a thermal processing production system in one embodiment.

[0048] Reference numerals: 10, composite leather case; 101, upper leather layer; 102, foam layer; 103, anti-wrinkle hot melt layer; 104, upper leather layer; 1041, hot melt film placement area; 20, glue sprayer; 201, control host; 202, glue spraying station; 203, glue application mechanism; 204, glue application area; 2041, first glue application area; 2042, second glue application area; 2043, third glue application area; 2044, fourth glue application area; 30 , stacking mounting plate; 301, contour forming area; 302, fixing column; 40, hot press; 401, supporting frame; 402, hot pressing upper mold; 4021, upper hot pressing area; 403, hot pressing lower mold; 4031, lower hot pressing area; 50, cooling and cutting all-in-one machine; 501, cooling and cutting controller; 502, cooling and cutting upper mold; 503, cooling and cutting lower mold; 504, cooling pipe; 505, support rod; 506, supporting base. DETAILED DESCRIPTION

[0049] In order to facilitate the understanding of the present disclosure, the present disclosure will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present disclosure are given in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present disclosure more thoroughly and comprehensively understood.

[0050] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present disclosure. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0052] In order to better understand the technical solutions and beneficial effects of the present invention, the present invention is further described in detail below in conjunction with specific embodiments:

[0053] The processing method for making a composite leather case based on a hot processing production system according to an embodiment of the present invention uses a hot processing production system to make a composite leather case 10, such as Figure 2 and Figure 3 As shown, the composite leather case 10 includes an upper leather layer 101 , a foam layer 102 , an anti-wrinkle hot-melt layer 103 and a lower leather layer 104 which are bonded in sequence, and the edge portion of the upper leather layer 101 is bonded to the edge portion of the lower leather layer 104 .

[0054] like Figures 4 to 6 As shown, the hot processing production system includes a glue spraying machine 20, a stacking mounting plate 30 and a hot press machine 40. The glue application area 204 of the glue spraying machine 20 is used to place the upper surface material, the lower surface material and the foam body respectively. The glue spraying machine 20 is used to perform surface glue application on the upper surface material, the lower surface material and the foam body respectively. Specifically, the glue spraying machine 20 performs single-sided glue application on the upper surface material and the lower surface material, and performs double-sided glue application on the foam body. The installation area of ​​the stacking mounting plate 30 is used to sequentially The lower surface material, the anti-wrinkle hot melt film, the foam body and the upper surface material are stacked to form a leather case to be pressed. The stacking mounting plate 30 has a contour forming area 301, which is used to accommodate a portion of the leather case to be pressed, and the stacking mounting plate 30 is provided with a plurality of fixing columns 302, wherein the contour forming area 301 is used to display the contour of the foam body in the lower surface material when the leather case to be pressed is subjected to a heat pressing operation; the heat press machine 40 is used to heat press the leather case to be pressed.

[0055] like Figure 1 As shown, the processing method includes some or all of the following steps:

[0056] S101, respectively obtain the upper surface material, the lower surface material, the foam body and the anti-wrinkle hot melt film, wherein the upper surface material is provided with a first fixing hole, the lower surface material is provided with a second fixing hole, and the lower surface material has a hot melt film placement area 1041 for being arranged corresponding to the anti-wrinkle hot melt film. It can be understood that the composite leather case 10 is made by rotating the material according to the material requirements to provide a base material for subsequent gluing and pressing operations. Furthermore, the upper surface material and / or the lower surface material is made of polyurethane (PU), the foam body is made of polyethylene (PE) or PU, and the anti-wrinkle hot melt film is made of thermoplastic polyurethane elastomer (TPU).

[0057] S102, placing the upper skin material, the lower skin material and the foam body in the gluing area 204 of the glue spraying machine 20 for gluing. It can be understood that the upper skin material, the lower skin material and the foam body are placed in the gluing area 204 of the glue spraying machine 20. On the one hand, the glue spraying machine 20 can reduce the energy required for manual gluing operations, save human resources, and thus improve the efficiency of surface gluing; on the other hand, the glue spraying machine 20 can accurately grasp the amount of gluing, which solves the problem of being unable to confirm the specific amount of gluing during manual gluing, and ensures that the colloid is not easy to overflow during the subsequent hot pressing step. In this embodiment, the glue spraying machine 20 includes a control host 201, a glue spraying platform 202, a glue application mechanism 203 and a glue application area 204. The glue spraying platform 202 is installed on the control host 201, and the glue application area 204 is located on the glue spraying platform 202. The XY axis moving control end of the control host 201 is electrically connected to the moving controlled end of the glue application mechanism 203, and the glue spraying control end of the control host 201 is electrically connected to the glue spraying controlled end of the glue application mechanism 203. That is, the control host 201 is used to control The gluing mechanism 203 moves in the directions of the X-axis and the Y-axis, and is in the gluing state, wherein the gluing area 204 is used to place the above-mentioned upper surface material, lower surface material and foam body. After completing the placement operation, the control host 201 controls the gluing mechanism 203 to move, and glues the upper surface material, lower surface material and foam body in the designated gluing area 204. After the gluing is completed, the operator can take out the upper surface material, lower surface material and foam body for the next step of processing.

[0058] S103, the glued lower surface material, the anti-wrinkle hot melt film, the glued foam body and the glued upper surface material are stacked in sequence on the stacking mounting plate 30 to form a leather cover to be pressed, wherein the anti-wrinkle hot melt film is placed in the hot melt film placement area 1041, and the fixing column 302 is sequentially inserted into the second fixing hole and the first fixing hole. It can be understood that the lower surface material, the anti-wrinkle hot melt film, the foam body and the upper surface material are stacked in sequence on the stacking mounting base to prepare for the hot pressing operation. When placing the lower surface material, the fixing column 302 is penetrated into the second fixing hole to prevent the lower surface material from being easily deviated from its position, so that the subsequent placement of the anti-wrinkle hot melt film, the foam body and the upper surface material can be carried out. The lower surface material has a hot melt film placement area 1041 for placing the anti-wrinkle hot melt film, and the hot melt film placement area 1041 corresponds to the anti-wrinkle hot melt film, thereby playing a role of identification, and it is not easy for the anti-wrinkle hot melt film and the foam body to be partially out of contact due to position deviation. In the subsequent hot pressing operation, the anti-wrinkle hot melt adhesive formed by the hot melting of the anti-wrinkle hot melt film is completely in contact with the bottom of the foam body, and under the action of gravity of the foam body, the lower surface material is recessed toward the contour forming area 301. After completing the step of stacking the lower surface material, anti-wrinkle hot melt film, foam body and upper surface material, the fixing column 302 is passed through the first fixing hole to prevent the upper surface material from easily shifting, so that the edge part of the upper surface material is arranged corresponding to the edge part of the lower surface material, which is also conducive to forming the leather cover to be pressed.

[0059] S104, placing the stacked mounting plate 30 with the leather case to be pressed in the hot press machine 40 for hot pressing operation to form the composite leather case 10. It can be understood that after the leather case to be pressed is formed, since the edge portion of the upper surface leather material corresponds to the edge portion of the lower surface leather material, further, when the leather case to be pressed is placed stably, the hot pressing operation is performed. Specifically, during the hot pressing operation, the upper surface leather material and the lower surface leather material soften at high temperature, so that both have good thermoplasticity, so that the shape of the foam body shows the contour of the foam body in the upper surface leather material and the lower surface leather material; the anti-wrinkle hot melt film melts under high temperature conditions to form an anti-wrinkle hot melt adhesive, and the anti-wrinkle hot melt adhesive is in full contact with the bottom of the foam body, so that the anti-wrinkle hot melt adhesive protects the bottom of the foam body when it cools to become an anti-wrinkle hot melt layer 103, prevents the bottom of the composite leather case 10 after forming from wrinkling, and ensures the flatness of the bottom of the composite leather case 10.

[0060] Furthermore, after hot pressing and cooling, the adhesive parts of the upper surface material, the lower surface material and the foam body form an adhesive layer, that is, the edge part of the upper surface material and the edge part of the lower surface material, the upper surface material and the foam body, the foam body and the anti-wrinkle adhesive layer, and the anti-wrinkle adhesive layer and the lower surface material are all bonded through the adhesive layer.

[0061] The above-mentioned composite leather case 10 is made by a hot processing production system, wherein the lower surface material has a hot melt film placement area 1041, which is convenient for placing the anti-wrinkle hot melt film, so that the anti-wrinkle hot melt film is not easy to be offset, so that the anti-wrinkle hot melt film forms a colloid after melting, and then cools to form an anti-wrinkle hot melt layer 103, which is in full contact with the lower half leather layer 104 and the foam layer 102, and is not easy to wrinkle at the bottom part, so that the bottom of the composite leather case 10 has better flatness. In addition, the present solution uses an anti-wrinkle hot melt film. Compared with the cardboard, hard paper, kraft paper, etc. used in the prior art, the anti-wrinkle hot melt film forms an anti-wrinkle hot melt layer 103 after melting and cooling, which can provide the softness of the bottom of the composite leather case 10, that is, the softness of the bottom is better. The stacking mounting plate 30 has a fixing column 302, which is convenient for fixing the upper surface material and the lower surface material, preventing the upper surface material or the lower surface material from shifting in position when the lower surface material, the anti-wrinkle hot melt film, the foam body and the upper surface material are stacked in sequence, thereby saving the time required for stacking the leather case to be pressed.

[0062] Furthermore, when executing step S103, the adhesive surface of the lower skin material is oriented toward the anti-wrinkle hot melt film, and the adhesive surface of the upper skin material is oriented toward the foam body. It can be understood that when placing the lower skin material, the adhesive surface of the lower skin material is away from the stacking mounting plate 30, and then the anti-wrinkle hot melt film, the foam body and the upper skin material are placed in sequence. At this time, the adhesive surface of the lower skin material is oriented toward the anti-wrinkle hot melt film, and the adhesive portion of the upper skin material is oriented toward the foam body. In this way, the adhesive surface of the upper skin material corresponds to the adhesive surface of the lower skin material. During the subsequent hot pressing operation, the edge portions of the upper skin material and the lower skin material are melted by the adhesive portion, so that the edges of the upper skin material and the lower skin material are bonded.

[0063] In one embodiment, the cross-sectional area of ​​the anti-wrinkle hot-melt film is equal to that of the foam body. It can be understood that the anti-wrinkle hot-melt film is used to protect the bottom of the foam body to prevent the bottom from deforming. In this embodiment, the cross-sectional area of ​​the anti-wrinkle hot-melt film is equal to that of the foam body, and then the anti-wrinkle hot-melt layer 103 formed after the anti-wrinkle hot-melt film is melted and cooled can cover the bottom of the foam body, which can reduce the production cost of the anti-wrinkle hot-melt film in terms of area and prevent waste caused by excess coverage area. On the other hand, it can ensure that the anti-wrinkle hot-melt layer 103 fully and just covers the bottom of the foam body.

[0064] In one embodiment, the cross-sectional area of ​​the hot melt film placement area 1041 is equal to that of the anti-wrinkle hot melt film. It can be understood that when the cross-sectional area of ​​the hot melt film placement area 1041 is equal to that of the anti-wrinkle hot melt film, the edge of the anti-wrinkle hot melt film completely overlaps with the edge of the hot melt film placement area 1041. Since the hot melt film placement area 1041 is provided, it can serve as a mark, which is convenient for operators to observe and determine whether the anti-wrinkle hot melt film is offset, and prevent the anti-wrinkle hot melt adhesive formed during the subsequent hot pressing operation from being incompletely in contact with the bottom of the foam body when the anti-wrinkle hot melt film is offset, and further, when the composite leather case 10 is formed, the bottom of the composite leather case 10 is partially wrinkled.

[0065] In one embodiment, the cross-sectional area of ​​the contour forming region 301 is smaller than the cross-sectional area of ​​the upper skin material and / or the lower skin material, and the cross-sectional area of ​​the contour forming region 301 is larger than the cross-sectional area of ​​the anti-wrinkle hot melt film and / or the foam body. It can be understood that since the first fixing hole of the upper surface material and the second fixing hole of the lower surface material are both penetrated by the fixing column 302, the upper surface material and the lower surface material are fixed, that is, the upper surface material and the lower surface material partially overlap with the stacked mounting plate 30 in the cross section, and the upper surface material and the lower surface material both cover the contour forming area 301, so that the cross-sectional area of ​​the contour forming area 301 is smaller than the cross-sectional area of ​​the upper surface material and / or the lower surface material; the cross-sectional area of ​​the contour forming area 301 is larger than the cross-sectional area of ​​the anti-wrinkle hot melt film and / or the foam body, so that the anti-wrinkle hot melt film and the foam body are located in the contour forming area 301 in the cross section, and during the subsequent hot pressing operation, the anti-wrinkle hot melt film and the foam body are pressed together by the upper surface material and the lower surface material, which is conducive to forming the composite leather case 10, and the foam body will not be exposed.

[0066] In one embodiment, the upper skin material, the lower skin material and the foam body are placed in the gluing area 204 of the glue spraying machine 20 for gluing, including:

[0067] The upper surface material is placed in the gluing area 204 of the glue spraying machine 20 for single-side gluing operation;

[0068] The lower surface material is placed in the gluing area 204 of the glue spraying machine 20 for single-side gluing operation;

[0069] The foam body is placed in the gluing area 204 of the glue spraying machine 20 to perform double-sided gluing operation.

[0070] It can be understood that the upper surface material has two sides, and one of the sides is exposed after molding. At this time, only the other side of the upper surface material needs to be glued, so that during subsequent hot pressing, the upper surface material, the lower surface material and the foam body can be fully bonded through the gluing colloid; the lower surface material has two sides, and one of the sides is exposed after molding. At this time, only the other side of the lower surface material needs to be glued, so that during subsequent hot pressing, the lower surface material can be fully bonded to the foam body through the anti-wrinkle hot melt film; the foam body has two sides, since both the upper surface material and the lower surface material have one side glued, in order to enhance the bonding strength between the upper surface material, the lower surface material and the foam body, the glue sprayer 20 glues both sides of the foam body to ensure that the upper surface material, the lower surface material and the foam body are less likely to peel off after the composite leather case 10 is formed, and thus the composite leather case 10 has a higher tensile strength.

[0071] like Figure 4 As shown, in one embodiment, the glue area 204 includes a first glue area 2041, a second glue area 2042, a third glue area 2043 and a fourth glue area 2044. The first glue area 2041 is used to place the upper surface material, the second glue area 2042 is used to place the lower surface material, and the third glue area 2043 and the fourth glue area 2044 are both used to place the foam body. Further, the top surface of the foam body is used to be placed toward the third glue area 2043, and the bottom surface of the foam body is used to be placed toward the fourth glue area 2044. It can be understood that the upper surface material is placed in the first gluing area 2041 so that the gluing mechanism 203 moves to the position of the first gluing area 2041 through the X-axis-Y-axis and glues one side of the upper surface material, while the other side is not glued; the lower surface material is placed in the second gluing area 2042 so that the gluing mechanism 203 moves to the position of the second gluing area 2042 through the X-axis-Y-axis and glues one side of the lower surface material, while the other side is not glued; the foam body is placed in the third gluing area 2043 so that the gluing mechanism 203 moves to the position of the third gluing area 2043 through the X-axis-Y-axis and glues one side of the foam body, and then the reverse side of the foam body is placed in the fourth gluing area 2044 so that the gluing mechanism 203 moves to the position of the fourth gluing area 2044 through the X-axis-Y-axis and glues the other side of the foam body, thereby completing the double-sided gluing of the foam body. Finally, the lower surface material, the wrinkle-resistant hot melt film, the foam body and the upper surface material are sequentially stacked to form the leather case to be pressed. In this embodiment, the cross-sectional shape of the first upper glue area 2041 matches the cross-sectional shape of the upper surface material; the cross-sectional shape of the second upper glue area 2042 matches the cross-sectional shape of the lower surface material; the cross-sectional shape of the third upper glue area 2043 matches the corresponding cross-sectional shape of one side of the foam body, and the cross-sectional shape of the fourth upper glue area 2044 matches the corresponding cross-sectional shape of the other side of the foam body.

[0072] In one embodiment, the leather cover to be pressed is placed in a heat press machine 40 for heat pressing, including:

[0073] The leather cover to be pressed is placed on the hot pressing lower mold 403 of the hot pressing machine 40;

[0074] Heating the hot pressing upper mold 402 of the hot pressing machine 40 and the hot pressing lower mold 403 of the hot pressing machine 40;

[0075] When the temperature of the hot pressing upper mold 402 reaches a first predetermined value, and the temperature of the hot pressing lower mold 403 reaches a second predetermined value, the hot pressing operation is performed.

[0076] Specifically, when the temperature of the hot pressing upper die 402 and the hot pressing lower die 403 reaches a predetermined value, the hot pressing upper die 402 is controlled to move toward the hot pressing lower die 403 to perform hot pressing on the leather cover to be pressed. Furthermore, the upper die temperature of the hot pressing machine is set to 145±10°C, and the lower die temperature is set to 125±10°C. In this embodiment, Figure 6As shown, the hot pressing machine 40 includes a supporting frame 401, a hot pressing upper mold 402, a hot pressing lower mold 403, a pressing drive member (not shown) and a hot pressing control board (not shown). The hot pressing upper mold 402 has an upper hot pressing area 4021, and the hot pressing lower mold 403 is installed in the supporting frame 401. The hot pressing lower mold 403 has a lower hot pressing area 4031 for placing the leather case to be pressed. The upper hot pressing area 4021 and the lower hot pressing area 4031 are arranged correspondingly. The vertical driving end of the pressing drive member is connected to the hot pressing upper mold 402, and the driving control end of the hot pressing control board is electrically connected to the controlled end of the pressing drive member. The heating control end of the hot pressing control board is electrically connected to the controlled ends of the hot pressing upper mold 402 and the hot pressing lower mold 403, respectively, that is, the hot pressing control board is used to control the driving state of the pressing drive member, and the hot pressing control board is used to set the hot pressing temperature and hot pressing time of the hot pressing lower mold 403 and the hot pressing upper mold 402. It can be understood that after the leather case to be pressed is placed firmly in the lower hot pressing zone 4031, the specified temperature is set through the hot pressing control board, so that the hot pressing lower mold 403 and the hot pressing upper mold 402 are heated to the set temperature, and then the hot pressing control board controls the pressing drive component to drive the hot pressing upper mold 402 to move towards the lower hot pressing zone 4031. Under the action of the pressing and snapping of the hot pressing upper mold 402 and the hot pressing lower mold 403, the upper surface leather material and the lower surface leather material are quickly softened, and the glue part has been hot-melted, so that the edge of the upper surface leather material is completely bonded to the edge of the lower surface leather material, and the anti-wrinkle hot-melt film and the foam body are bonded together in the hot pressing upper mold 402, wherein the anti-wrinkle hot melt film melts under high temperature to form hot melt protective adhesive, so that the hot melt protective adhesive is located between the upper adhesive surface of the lower skin material and the other adhesive surface of the foam body. Under the action of the hot melt protective adhesive, the upper adhesive surface of the lower skin material and the other adhesive surface of the foam body are more firmly bonded after molding, and the hot melt protective adhesive protects the bottom surface of the foam body to prevent the bottom surface from wrinkling or unevenness. After the pressure is maintained for a certain period of time, the hot pressing control board controls the pressing drive component to drive the hot pressing upper mold 402 to move away from the lower hot pressing zone 4031, thus completing the hot pressing operation of the leather case. Further, when the leather case to be pressed is placed in the lower hot pressing zone 4031 of the hot press machine 40, the anti-wrinkle hot melt film is arranged adjacent to the lower hot pressing zone 4031. In another embodiment, the cross-sectional area of ​​the lower hot pressing zone 4031 is smaller than that of the contour forming zone 301, and the cross-sectional area of ​​the upper hot pressing zone 4031 is smaller than that of the contour forming zone 301, so that during the hot pressing operation, the edge portion of the upper hot pressing zone 4031 and the edge portion of the lower hot pressing zone 4031 are pressed together to bond the edge portions of the upper skin material and the lower skin material.

[0077] In one of the embodiments, the first predetermined value is 145±10℃. In this embodiment, the first predetermined value is the hot pressing temperature of the hot pressing upper mold 402, that is, the heat preservation and pressing temperature of the hot pressing upper mold is 145±10℃, that is, the temperature of the first predetermined value is the hot pressing method of heat preservation and pressing during pressing, and the hot pressing temperature corresponding to the hot pressing upper mold 402, wherein the pressure corresponding to the heat preservation and pressing is 0.3±0.1MPa. It can be understood that since the upper half of the foam body has a concave-convex structure, and the upper surface material is a plane shape, it is not easy to deform at room temperature. If the temperature set by the upper mold hot pressing is too low during pressing, the upper surface material and the foam body cannot be completely fitted, and the foam body cannot normally display its concave-convex contour on the upper surface material, so there is a gap, and then the composite leather case 10 after molding has a structural floating area. In order to ensure that the concave-convex structure can show an outline on the upper surface material during the pressing operation and that no gap will be formed between the upper surface material and the foam body, generally, the hot pressing temperature of the upper mold is set to 145±10°C, preferably 145°C, so that the upper surface material can be fully softened and have good thermoplasticity. In this way, when the upper half of the foam body is pressed with the upper surface material, the concave-convex structure of the foam body can be completely fitted on the upper surface material, showing the corresponding concave-convex outline, thereby ensuring the integrity of the composite leather case 10.

[0078] In one embodiment, the second predetermined value is 125±10℃. In this embodiment, the second predetermined value is the hot pressing temperature of the hot pressing lower mold 403, that is, the heat preservation and pressing temperature of the hot pressing lower mold is 125±10℃, that is, the temperature of the second predetermined value is the hot pressing temperature corresponding to the hot pressing lower mold 403 in the hot pressing method of heat preservation and pressing during pressing. It can be understood that the lower half of the foam body is a plane, and the step of completely fitting the lower half of the foam body and the lower surface material can be achieved without setting a higher temperature. However, the anti-wrinkle hot melt film needs a certain temperature to melt into anti-wrinkle hot melt adhesive, so that the anti-wrinkle hot melt adhesive fully and firmly bonds the foam body to the lower surface material. Otherwise, when the temperature is too low, the anti-wrinkle hot melt film is not fully melted, and the anti-wrinkle hot melt adhesive cannot be completely formed, which causes the anti-wrinkle hot melt film adhesive mixture to form an outline on the softened lower surface material, resulting in wrinkles, so that the bottom of the leather case is wrinkled or uneven after forming. Therefore, the hot pressing temperature of the lower mold is set to 125±10℃, preferably 125℃, to ensure that the anti-wrinkle hot melt film is fully melted to completely form the anti-wrinkle hot melt adhesive. In this way, after the anti-wrinkle hot melt adhesive forms a protective layer after completing the pressing operation, the protective layer is in full contact with the lower surface material and the foam body to ensure firm bonding.

[0079] In one of the embodiments, during the pressing operation, the holding time is 40±5 seconds. In this embodiment, the holding time is 40 seconds. It can be understood that after the hot pressing upper mold 402 and the hot pressing lower mold 403 are heated to the specified temperature, the pressing operation can be performed to hold the pressure. While the pressure is maintained, the temperature of the upper and lower skin materials rises rapidly and then softens, so that the hot pressing upper mold 402 and the hot pressing lower mold 403 can better press the edge portions of the upper and lower skin materials, and the bonding effect of the upper and lower skin materials and the foam body is better.

[0080] In one embodiment, the upper skin material, the lower skin material and the foam body are placed in the gluing area 204 of the glue spraying machine 20 for gluing, and then the process includes: baking the glued upper skin material, the lower skin material and the foam body.

[0081] In this embodiment, the upper surface material, the lower surface material and the foam body after gluing are placed in a baking oven for baking. It can be understood that the colloid of the upper surface material, the lower surface material and the foam body after gluing is at room temperature. In order to accelerate the overall production efficiency of the composite leather case 10, the upper surface material, the lower surface material and the foam body are placed in a baking oven for baking to accelerate the solidification of the colloid and facilitate the next step. Specifically, the upper surface material with single-sided gluing, the lower surface material with single-sided gluing and the foam body with double-sided gluing are placed in a baking oven for baking. Compared with natural drying, baking can save the time required for drying.

[0082] In another embodiment, the baking temperature is 85±5° C. Further, the baking temperature is 85° C.

[0083] In one embodiment, the hot processing production system further includes a cooling and cutting machine 50, which is used to cool and edge-cut the leather case after hot pressing. It can be understood that during the hot pressing operation, the fixing column 302 is always inserted into the first fixing hole and the second fixing hole, which makes the edge of the upper surface leather material / lower surface leather material with the first fixing hole / second fixing hole unbonded, that is, the edge parts of the upper surface leather material and the lower surface leather material are only partially bonded. Therefore, after the hot pressing operation is completed, the composite leather case 10 is placed in the cooling and cutting machine 50 for cooling and edge cutting.

[0084] In this embodiment, if Figure 7As shown, the cooling and cutting machine 50 includes a cooling and cutting controller 501, a cooling and cutting upper die 502, a cooling and cutting lower die 503, a cooling pipe 504, a support rod 505, a cooling box (not shown) and a supporting base 506. The cooling and cutting lower die 503 and the support rod 505 are installed on the supporting base 506. The cooling and cutting controller 501 is connected to the cooling and cutting controller 501, one end of the cooling pipe 504 is connected to the cooling box, and the other end of the cooling pipe 504 is respectively connected to the water inlet end of the cooling and cutting upper die 502 and the cooling and cutting lower die 503, so that the cooling water of the cooling box passes through the cooling pipe 504 to cool the cooling and cutting upper die 502 and the cooling and cutting lower die 503. Cooling is performed to indirectly cool down the composite leather case 10. The water outlet ends of the cooling and cutting upper mold 502 and the cooling and cutting lower mold 503 are used to discharge cooling water. The cooling control end of the cooling and cutting controller 501 is electrically connected to the cooling box to control whether the cooling water enters. The upper mold moving control end of the cooling and cutting controller 501 is electrically connected to the cooling and cutting upper mold 502 to control the moving state of the cooling and cutting upper mold 502. The cooling and cutting upper mold 502 is provided with a retractable cutting knife (not shown). The cutting knife is provided on the cooling and cutting lower mold 503. The cutting control end of the cooling and cutting controller 501 is electrically connected to the cutting knife so that the cutting knife is used to cut the edge of the composite leather case 10.

[0085] The stacked mounting plate 30 with the leather cover to be pressed is placed in a hot press machine for hot pressing to form a composite leather cover 10 , and then the composite leather cover 10 is cooled and edge trimmed.

[0086] In this embodiment, the cooling edge cutting operation is performed on the composite leather cover 10, including:

[0087] The composite leather cover 10 is placed in the cooling and cutting lower die 503 of the cooling and cutting integrated machine 50;

[0088] Press the cooling and cutting upper die 502 and the cooling and cutting lower die 503 together to perform a cooling operation;

[0089] When the temperature of the composite leather case 10 drops to the cooling predetermined temperature, the edge cutting operation is performed.

[0090] It can be understood that after the hot pressing operation is completed, the composite leather case 10 is placed on the cooling and cutting lower die 503 of the cooling and cutting integrated machine 50 to be fixed, and then the cooling and cutting upper die 502 is driven by operating the cooling and cutting controller 501 to press it with the cooling and cutting lower die 503, and at the same time, the cooling box is controlled to open the cooling state, so that cooling water enters the cooling and cutting upper die 502 and the cooling and cutting lower die 503 through the cooling pipe 504, so as to indirectly transmit the temperature to the composite leather case 10. When the temperature of the composite leather case 10 drops to the cooling state, the cooling water flows into the cooling and cutting upper die 502 and the cooling and cutting lower die 503. When the predetermined temperature is reached, the cooling and cutting controller 501 is operated to drive the cutting knife to cut the unbonded edge portion of the composite leather case 10 to form the composite leather case 10. The cutting knife can save the time required for manual cutting, accelerate the manufacturing speed of the composite leather case 10, and ensure the production efficiency of the composite leather case 10. Furthermore, the first fixing hole and the second fixing hole are both located in the unbonded portion, and then, after cooling and cutting, the first fixing hole and the second fixing hole are both cut off, thereby forming a composite leather case 10 without any jagged edges.

[0091] When making the composite leather case 10, the lower surface material, the anti-wrinkle hot melt film, the foam body, and the upper surface material need to be stacked in sequence to form the leather case to be pressed. In particular, the center points and horizontal center lines of the lower surface material, the anti-wrinkle hot melt film, the foam body, and the upper surface material need to coincide. Even if the anti-wrinkle hot melt film is located in the hot melt film placement area 1041, and the foam body is placed directly above the anti-wrinkle hot melt film, some operators place the foam body to one side, that is, first the left side and then the right side, or first the right side and then the left side, or even place it randomly, which causes the foam body to be offset. Therefore, when the foam body is offset, the anti-wrinkle hot melt film also follows the offset. After the leather case to be pressed is subjected to the hot pressing operation, the contours of the foam body displayed on the upper surface material and the lower surface material are also misaligned, which affects the integrity of the composite leather case 10. Furthermore, during the edge cutting operation after lamination, since the cutting position is fixed, especially when placed in the cooling and cutting machine 50, the specific path of the cutting edge is fixed. Thus, during the edge cutting operation, if the bonding area of ​​the edge region between the upper and lower surface leather materials after cutting is too small, the edge region will be debonded, exposing the foam body to the outside world. More seriously, when the foam body is placed on the lower surface leather material, the position is seriously offset, so that the foam body is too close to the edge of the lower surface leather material. Even if the edges of the upper and lower surface leather materials can still be bonded after the lamination operation, the cooling and cutting machine 50 will still cut the foam body when cutting the edge of the leather case, which will cause the composite leather case 10 to be scrapped. The above situation will affect the qualified quality of the composite leather case 10, resulting in an increase in the product defect rate, and seriously affecting the production efficiency of the composite leather case 10. In order to prevent structural problems of the produced composite leather case 10 due to the position deviation of the foam body, the lower surface material, the anti-wrinkle hot melt film, the foam body and the upper surface material are sequentially stacked in the mounting area of ​​the stacking mounting plate 30 to form a leather case to be pressed, and then the following steps are performed:

[0092] Place the leather case to be pressed on the testing table and obtain the position images of the lower surface leather material, foam body and anti-wrinkle hot melt film;

[0093] According to the position image of the lower surface material, the position information of the center point of the lower surface material corresponding to the detection platform is obtained, which is recorded as the first center position information;

[0094] According to the position image of the foam body, the position information of the center point of the foam body corresponding to the detection platform is obtained, which is recorded as the second center position information;

[0095] According to the position image of the foam body, the position information of the center point of the anti-wrinkle hot-melt film corresponding to the detection platform is obtained, which is recorded as the third center position information;

[0096] Detecting whether the first center position information, the second center position information, and the third center position information are all equal;

[0097] If the first center position information, the second center position information and the third center position information are all equal, then the position information corresponding to the horizontal center line of the lower skin material, the foam body and the anti-wrinkle hot melt film is obtained at the same time, otherwise, a position deviation alarm signal is sent;

[0098] Check whether the value of the angle formed by any two of the horizontal center line of the lower skin material, the horizontal center line of the foam body, and the horizontal center line of the anti-wrinkle hot-melt film is 0;

[0099] If the value of the angle is 0, step S104 is executed; otherwise, a position deviation alarm signal is sent.

[0100] In this embodiment, the detection table has an X-axis and a Y-axis. When the leather case to be pressed is placed on the detection table, the detection system reads the position image information of the leather case to be pressed. Here, the focus is on the position relationship between the lower surface leather material, the foam body and the anti-wrinkle hot-melt film. Specifically, after obtaining the position image information, the position images of the lower surface leather material and the foam body are obtained, and the position information corresponding to the center point of the lower surface leather material is obtained according to the position image of the lower surface leather material, that is, the X-axis and Y-axis information corresponding to the center point of the lower surface leather material on the detection table, and it is recorded as the first center position information, that is, recorded as the first position point (X1, Y1). At the same time, the position information corresponding to the center point of the foam body is obtained according to the position image of the foam body, that is, the X-axis and Y-axis information corresponding to the center point of the foam body on the detection table, and it is recorded as the second The center position information is recorded as the second position point (X2, Y2), and then the position information corresponding to the center point is obtained according to the position image of the anti-wrinkle hot melt film, that is, the X-axis and Y-axis information corresponding to the center point of the anti-wrinkle hot melt film on the detection table, and it is recorded as the third center position information, that is, recorded as the second position point (X3, Y3). After reading the three position points, detect whether the first center position information, the second center position information and the third center position information are equal, that is, whether the first position point (X1, Y1), the second position point (X2, Y2) and the third position point (X3, Y3) coincide with each other (hereinafter referred to as condition 1). If they coincide, proceed to the next step: simultaneously obtain the position information corresponding to the horizontal center line of the lower surface material, the foam body and the horizontal center line of the anti-wrinkle hot melt film. For example, taking the lower left corner of the detection platform as the origin, the first position point, the second position point and the third position point are all in the first quadrant, and the first position point obtained by the detection system is (40,20), the second position point (40,20), and the third position point is also (40,20), that is, X1=X2=X3, and Y1=Y2=Y3, then it can be confirmed that the three position points coincide. When the step of obtaining the position information corresponding to the horizontal center line of the lower skin material and the horizontal center line of the foam body is completed, it is determined whether the value of the angle formed by any two of the horizontal center lines of the lower skin material, the horizontal center line of the foam body and the horizontal center line of the anti-wrinkle hot melt film is 0, that is, whether any two horizontal center lines overlap (hereinafter referred to as condition 2). If the angle is 0, that is, any two horizontal center lines overlap, step S104 can be executed.It should be noted that the execution of step S104 requires the simultaneous satisfaction of conditions 1 and 2, that is, when the first position point, the second position point and the third position point coincide, and the value of the angle formed by the horizontal center line of the lower surface material, the foam body and the anti-wrinkle hot melt film is 0, the execution can be performed. When one or both of conditions 1 and 2 are not met, a position offset alarm signal is issued to inform the operator to align the foam body and / or the anti-wrinkle hot melt film, specifically to align the anti-wrinkle hot melt film with the hot melt film placement area 1041, and / or to put down the foam body in the vertical direction and on both sides at the same time, so as to meet conditions 1 and 2 at the same time. In this way, under the action of the position offset alarm signal, it can serve to warn the operator to prevent the composite leather case 10 from being a defective product after molding due to the position offset of the foam body.

[0101] In another embodiment, if the first center position information, the second center position information and the third center position information are equal, the position information corresponding to the vertical center line of the lower surface material, the vertical center line of the foam body and the vertical center line of the anti-wrinkle hot melt film is obtained at the same time, and it is detected whether the value of the angle formed by any two of the vertical center lines of the lower surface material, the vertical center line of the foam body and the vertical center line of the anti-wrinkle hot melt film is 0; if the value of the angle formed by any two vertical center lines is 0, execute step S104, otherwise, send a position deviation alarm signal. It can be understood that when condition 1 is met, it is determined whether the value of the angle formed by any two of the vertical center lines of the lower surface material, the vertical center line of the foam body and the vertical center line of the anti-wrinkle hot-melt film is 0, that is, whether any two vertical center lines coincide with each other (hereinafter referred to as condition 3). When the value of the angle is 0, it can be said that the placement of the foam body meets both conditions 1 and 3, and step S104 is executed. Otherwise, when one or both of conditions 1 and 3 are not met, a position offset alarm signal is sent to inform the operator to handle the abnormal information.

[0102] Compared with the prior art, the present invention has at least the following advantages:

[0103] 1. The composite leather case 10 is made by a thermal processing production system, wherein the lower surface material has a hot melt film placement area 1041, which is convenient for placing the anti-wrinkle hot melt film, so that the anti-wrinkle hot melt film is not prone to positional displacement, so that the anti-wrinkle hot melt film is melted to form a colloid, and then cooled to form an anti-wrinkle hot melt layer 103, which is in full contact with the lower half leather layer 104 and the foam layer 102, and is not prone to wrinkles in the bottom part, so that the bottom of the composite leather case 10 has better flatness.

[0104] 2. This solution uses an anti-wrinkle hot-melt film. Compared with the cardboard, hard paper, kraft paper, etc. used in the prior art, the anti-wrinkle hot-melt film forms an anti-wrinkle hot-melt layer 103 after melting and cooling, which can provide softness to the bottom of the composite leather case 10, that is, the bottom has better softness.

[0105] 3. The stacking mounting plate 30 has a fixing column 302, which is convenient for fixing the upper surface material and the lower surface material, preventing the upper surface material or the lower surface material from shifting when the lower surface material, the anti-wrinkle hot melt film, the foam body and the upper surface material are stacked in sequence, thereby saving the time required for stacking the leather cover to be pressed.

[0106] The above-mentioned embodiments only express several implementation methods of the present disclosure, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the disclosed patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present disclosure, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the disclosed patent shall be subject to the attached claims.

Claims

1. A processing method for making a composite leather case based on a hot processing production system, characterized in that: A composite leather case is made by using a thermal processing production system, wherein the composite leather case comprises an upper leather layer, a foam layer, an anti-wrinkle hot-melt layer and a lower leather layer which are bonded in sequence, and an edge portion of the upper leather layer is bonded to an edge portion of the lower leather layer; The thermal processing production system comprises: A glue spraying machine, wherein the glue application area of ​​the glue spraying machine is used to place the upper surface material, the lower surface material and the foam body respectively, and the glue spraying machine is used to perform surface glue application on the upper surface material, the lower surface material and the foam body respectively; A stacking installation plate, the stacking installation plate is used to sequentially stack the lower surface leather material, the anti-wrinkle hot melt film, the foam body and the upper surface leather material to form a leather case to be pressed together, the stacking installation plate has a contour forming area, the contour forming area is used to accommodate the part of the leather case to be pressed together, and the stacking installation plate is provided with a plurality of fixing columns; A heat press machine, used for heat pressing the leather cover to be pressed; The processing method comprises: Respectively obtain an upper surface material, a lower surface material, a foam body and an anti-wrinkle hot-melt film, wherein the upper surface material is provided with a first fixing hole, the lower surface material is provided with a second fixing hole, and the lower surface material has a hot-melt film placement area for being provided corresponding to the anti-wrinkle hot-melt film; Placing the upper skin material, the lower skin material and the foam body in the gluing area of ​​the glue spraying machine for gluing operation; The glued lower surface material, the anti-wrinkle hot-melt film, the glued foam body and the glued upper surface material are sequentially stacked on the stacking mounting plate to form a leather cover to be pressed, wherein the anti-wrinkle hot-melt film is placed in the hot-melt film placement area, and the fixing column is sequentially inserted into the second fixing hole and the first fixing hole; The stacked mounting plate with the leather cover to be pressed is placed in a hot press to perform hot pressing operation to form a composite leather cover.

2. The processing method according to claim 1, characterized in that: The lower surface material, the anti-wrinkle hot melt film, the foam body and the upper surface material are sequentially stacked on the stacking mounting plate to form a leather cover to be pressed, including: The adhesive surface of the lower surface material is directed toward the anti-wrinkle hot-melt film, and the adhesive surface of the upper surface material is directed toward the foam body.

3. The processing method according to claim 1, characterized in that: The cross-sectional area of ​​the anti-wrinkle hot-melt film is equal to that of the foam body; and / or, The cross-sectional area of ​​the hot-melt film placement area is equal to that of the anti-wrinkle hot-melt film.

4. The processing method according to claim 1, characterized in that: The cross-sectional area of ​​the contour forming area is smaller than the cross-sectional area of ​​the upper skin material and / or the lower skin material, and the cross-sectional area of ​​the contour forming area is larger than the cross-sectional area of ​​the anti-wrinkle hot-melt film and / or the foam body.

5. The processing method according to claim 1, characterized in that: The step of placing the upper skin material, the lower skin material and the foam body in the gluing area of ​​the glue spraying machine for gluing includes: Placing the upper surface material in the gluing area of ​​the glue spraying machine to perform a single-side gluing operation; Placing the lower surface material in the gluing area of ​​the glue spraying machine to perform a single-side gluing operation; The foam body is placed in the gluing area of ​​the glue spraying machine to perform double-sided gluing operation.

6. The processing method according to any one of claim 5, characterized in that: The gluing area includes a first gluing area, a second gluing area, a third gluing area and a fourth gluing area. The first gluing area is used to place the upper surface material, the second gluing area is used to place the lower surface material, and the third gluing area and the fourth gluing area are both used to place the foam body.

7. The processing method according to claim 1, characterized in that: Placing the leather cover to be pressed together in a heat press for hot pressing includes: Placing the leather cover to be pressed on the hot pressing lower die of the hot press; Heating the hot pressing upper mold of the hot pressing machine and the hot pressing lower mold of the hot pressing machine; When the temperature of the hot pressing upper mold reaches a first predetermined value, and the temperature of the hot pressing lower mold reaches a second predetermined value, the hot pressing operation is performed.

8. The processing method according to claim 7, characterized in that: The first predetermined value is 145±10°C; and / or, The second predetermined value is 125±10°C.

9. The processing method according to claim 1, characterized in that: Placing the upper skin material, the lower skin material and the foam body in the gluing area of ​​the glue spraying machine for gluing, and then further comprising: The upper surface material, the lower surface material and the foam body after gluing are baked.

10. The processing method according to claim 1, characterized in that: The thermal processing production system also includes a cooling and cutting machine, which is used to cool and edge-cut the leather cover after heat pressing; Placing the stacked mounting plate with the leather cover to be pressed on a hot press to perform hot pressing to form a composite leather cover, and then further comprising: The composite leather cover is subjected to a cooling edge cutting operation.

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