阅读说明：本技术 一种鞋帮部件胶压成型方法及其使用的压合装置 (Method for gluing and pressing upper part and pressing device used by same ) 是由 杨仙岳 孙天赦 张衡 于 2021-08-31 设计创作，主要内容包括：本发明公开了一种鞋帮部件胶压成型方法,鞋面部件由至少2个块部件完成,连接时叠压部件与被压部件上下叠放连接或两个对压部件边缘相切平放连接,成型步骤如下：S01：块部件的接茬端头加工,叠压部件的连接端形成片削斜面,且加工片边容纳槽,对片削斜面进行折边处理；被压部件的连接端进行拔茬片边加工；对压部件的端头完成折边处理；S02：叠压连接时被压部件与片边容纳槽配合,叠压连接处粘接有软质过渡条；两个对压部件通过平面端面粘合连接,且连接处的下方用补强带固定,并且补强带的外表面与对压部件的内侧面齐平；S03：利用压合装置对叠压连接处进行压合或对相切平放连接进行相对挤压压合。本发明使鞋面美观,且压合加工效率高。(The invention discloses a gluing and pressing forming method of an upper part, wherein the upper part is formed by at least 2 parts, a laminating part and a pressed part are connected in an up-and-down stacking way or the edges of two opposite pressing parts are connected in a tangent and horizontal way during connection, and the forming steps are as follows: s01: processing the connecting end of the block part, forming a slicing inclined plane at the connecting end of the overlying part, processing a slice edge accommodating groove, and performing edge folding treatment on the slicing inclined plane; the connecting end of the pressed part is processed by stubble blade edge pulling; the end of the pressing part is folded; s02: the pressed part is matched with the sheet edge accommodating groove during the laminating connection, and a soft transition strip is bonded at the laminating connection position; the two opposite pressing components are bonded and connected through the plane end faces, the lower part of the connection part is fixed by the reinforcing belt, and the outer surface of the reinforcing belt is flush with the inner side face of the opposite pressing component; s03: and pressing the laminated connection position or performing relative extrusion pressing on the tangential horizontal connection by using a pressing device. The invention makes the vamp beautiful and the pressing processing efficiency is high.)

1. A method for gluing and pressing upper parts is used for splicing, producing and manufacturing the upper parts of leather shoes, the upper parts are completed by at least 2 parts, the parts are laminated parts (1) or pressed parts (2) or butt-pressed parts (3), the connecting edges of the parts are connected after finishing the processing of the connecting ends, the laminated parts (1) and the pressed parts (2) are vertically stacked and glued and connected or the edges of the two butt-pressed parts (3) are tangentially laid and glued and connected during connection, the production and the manufacture of the upper are completed, and the method is characterized in that the gluing and pressing of the upper parts comprises the following steps:

s01: the stubble connecting end of the block part is processed, stubble pulling and sheet edge processing are carried out on the inner side of the connecting end part of the laminating part (1) to form a sheet cutting inclined plane (12), a sheet edge accommodating groove (11) extending to the end face is processed on the inner side surface of the laminating part (1) after sheet edge processing, the width of the sheet edge accommodating groove (11) is larger than that of the sheet cutting inclined plane (12), and edge folding and bonding processing are carried out on the sheet cutting inclined plane (12); the inner side of the connecting end part of the pressed part (2) is subjected to stubble-pulling and edge-cutting processing, so that the edge thickness (21) of the pressed part (2) is matched with the depth corresponding to the edge-cutting accommodating groove (11); the end of the pressing component (3) is folded to form a plane end face;

s02: when the laminated part (1) is connected with the pressed part (2), the pressed part (2) is matched, bonded and connected with the sheet edge accommodating groove (11), and a soft transition strip (6) is bonded at an obtuse angle connecting part formed by the laminated part (1) and the inner side of the pressed part (2); when the two opposite pressing components (3) are connected, the end faces of the connecting planes of the two opposite pressing components (3) are bonded and connected through an adhesive (4), the lower part of the joint of the two opposite pressing components (3) is fixed by a reinforcing belt (5), and the outer surface of the reinforcing belt (5) is flush with the inner side face of the opposite pressing component (3);

s03: and firmly pressing the joint of the laminated part (1) and the pressed part (2) with patterns by using a pressing device (7) or pressing the joint of the two pressed parts (3) with relative extrusion patterns by using the pressing device (7).

2. The upper part gluing and forming method according to claim 1, wherein in step S01, a tape receiving groove (31) extending to the end face is formed on the inner side surface of the end corresponding to the butt end of the butt pressing part (3) during the butt end processing of the butt pressing part (3), a folding edge receiving groove (32) extending to the end face is formed at the bottom of the tape receiving groove (31), a right-angle cutting groove (33) extending to the end face is formed at the bottom of the folding edge receiving groove (32) to form a folding edge strip (34), the folding edge strip (34) forms an "L" shape after the folding processing of the folding edge strip (34), and one edge is attached to the bottom surface of the folding edge receiving groove (32), wherein the inner side surface of the folding edge strip (34) is coated with a glue layer.

3. Upper part glue-pressing forming method according to claim 1, characterized in that in step S01, an avoiding notch (13) is provided on the skiving slant surface (12), and the avoiding notch (13) is located at the bending position of the skiving slant surface (12) when the skiving slant surface (12) is folded.

4. Upper part molding method according to claim 2, wherein the reinforcing band (5) is located in the band receiving groove (31), and the width of the band receiving groove (31) is larger than the width of the hem receiving groove (32).

5. Upper part molding method according to claim 1, wherein the depth of the sheet edge receiving groove (11) is 1 to 1.5 mm; the thickness of the edge folding strip (34) is 1-1.2 mm.

6. A stitching device (7) for use in the upper part gluing and pressing method according to any one of claims 1 to 5, comprising a base (71), a plurality of stitching assemblies (75) and a plurality of levers (74) arranged on the base (71), wherein the stitching assemblies (75) comprise a lower base (755) detachably connected to the base (71), a pressing plate (752) arranged above the lower base (755), a plurality of guide rods (754) connected to the bottom surface of the pressing plate (752) are slidably engaged with the base (71), the pressing plate (752) is provided with a detachable upper die head (753), the top of the pressing plate (752) is connected with a pressing head (751), a pin fixedly connected with the pressing head (751) is engaged with a strip-shaped hole at one end corresponding to the lever (74), the middle part of the lever (74) is pivoted on a corresponding upright plate (711) of the base (71), the other end of the lever (74) is connected with a lifting driving mechanism arranged on the base (71).

7. The laminating apparatus according to claim 6, wherein the lifting driving mechanism includes a cylinder (72) fixedly connected to the base (71) and a driving head (73) fixedly connected to the cylinder (72), the other end of the lever (74) is connected to a corresponding limiting hole on the circumferential surface of the driving head (73), and the other end of the lever (74) is in a ball head shape.

8. The laminating apparatus according to claim 7, wherein said upper die head (753) includes a die plate (7531) removably attached to said platen (752), said die plate (7531) having a retainer presser foot (7534) on a bottom surface thereof, said retainer presser foot (7534) having a textured indentation on a laminating surface thereof.

9. The stitching device as claimed in claim 8, wherein the bottom surface of the template (7531) is provided with a cavity (7532), the cavity (7532) is internally provided with a lifting cross bar (7535), the lifting cross bar (7535) is slidably sleeved with a movable presser foot (7536), a convex shaft (7537) fixedly arranged on the movable presser foot (7536) is in inserted connection with a guide chute (7533) positioned on the inner wall of the cavity (7532), a return spring (7538) sleeved on the lifting cross bar (7535) drives the movable presser foot (7536) to be away from the fixed presser foot (7534), and the template (7531) is pressed downwards to enable the movable presser foot (7536) to be close to the fixed presser foot (7534).

10. The stitching device according to claim 8, wherein the lower die holder (755) is connected to a corresponding support platform (712) of the base (71) via a corresponding locking mechanism (76), the upper die head (753) is connected to the platen (752) via a corresponding locking mechanism (76), the locking mechanism (76) comprises two symmetrically arranged swing arms (761), the swing arms (761) are pivotally connected to the platen (752), one end of the swing arms (761) is connected to the platen (752) via a tension spring (762), the other end of the swing arms (761) is provided with a roller (763), and the roller (763) can be horizontally inserted into a corresponding locking groove (7539) in the platen (7531).

Technical Field

The invention relates to the technical field of shoe manufacturing, in particular to an upper part gluing and pressing method and a pressing device used by the same.

Background

With the improvement of living standard and the improvement of living quality, leather shoes are no longer luxury goods and become one of the daily wear of many people, and with the change of dressing style, leather shoes with corresponding styles are needed to be worn together, so the demand is continuously increased, the rapid development of the leather shoe industry is powerfully promoted, the backward appearance of production is improved, with the continuous improvement of aesthetic ability, designers and enterprises are stimulated to continuously and rapidly change the design style of shoes to meet the requirements of the market masses, the style change is mostly embodied from uppers, the traditional upper forming technology is always completed by adopting a sewing process, in order to ensure that the upper forming effect is good, the appearance is attractive, common workers with skilled sewing machine operation skills are needed to complete, because the structure of the uppers is limited, the batch production cannot be realized by using an automatic technology, for the splicing of complicated uppers, the production speed of shoe products can be greatly reduced by sewing and splicing, in order to overcome the defects, the bonding technology is developed through the improvement of the forming technology and the process innovation aspect, but the existing bonding technology causes the thickness of the spliced part to be larger and influences the attractiveness of the spliced seam, the butt bonding causes the stability of the spliced seam to be poor, and the stitching technology adopts the one-by-one stitching of the spliced seams, so that the working efficiency is low.

Disclosure of Invention

In view of the above, the present invention provides a method for gluing and pressing an upper member and a pressing device used in the method, so as to solve the above technical problems.

In order to achieve the purpose, the invention provides the following technical scheme:

a method for gluing and pressing upper parts is used for splicing, producing and manufacturing the upper parts of leather shoes, the upper parts are completed by at least 2 parts, the parts are laminated parts or pressed parts or butt-pressed parts, the connecting edges of the parts are connected after the processing of the connecting ends is completed, the laminated parts and the pressed parts are vertically stacked and bonded or the edges of the two butt-pressed parts are tangentially laid and bonded during connection, the production and the manufacture of the upper are completed, and the gluing and pressing steps of the upper parts are as follows:

s01: the stubble connecting end of the block part is processed, stubble pulling and edge cutting processing are carried out on the inner side of the connecting end part of the laminating part to form a skiving inclined plane, an edge cutting accommodating groove extending to the end face is processed on the inner side face of the laminating part after the edge cutting, the width of the edge cutting accommodating groove is larger than that of the skiving inclined plane, and edge folding and bonding processing are carried out on the skiving inclined plane; the inner side of the connecting end part of the pressed part is subjected to stubble-pulling and edge-cutting processing, so that the edge thickness of the pressed part is matched with the depth corresponding to the edge-cutting accommodating groove; folding the end of the pressing part to form a plane end face;

s02: when the laminated part is connected with the pressed part, the pressed part is matched and bonded with the sheet edge accommodating groove, and a soft transition strip is bonded at the obtuse angle joint formed by the laminated part and the inner side of the pressed part; when the two opposite pressing components are connected, the end faces of the connecting planes of the two opposite pressing components are bonded and connected through an adhesive, the lower part of the joint of the two opposite pressing components is fixed by a reinforcing belt, and the outer surface of the reinforcing belt is flush with the inner side face of the opposite pressing component;

s03: and firmly pressing the joints of the laminated parts and the pressed parts with patterns by using a pressing device or pressing the joints of the two pressed parts with the patterns by relatively extruding the pressing device.

Further, in step S01, a tape receiving groove extending to the end surface is processed on the inner side surface of the end corresponding to the butt pressing member during processing of the butt end of the butt pressing member, a hem receiving groove extending to the end surface is processed at the bottom of the tape receiving groove, a right-angle cut groove extending to the end surface is processed at the bottom of the hem receiving groove to form a hem strip, the hem strip forms an "L" shape after the hem treatment of the hem strip, one side of the hem strip is attached to the bottom surface of the hem receiving groove, and the inner side surface of the hem strip is coated with a glue layer.

Further, in step S01, an avoiding notch is formed in the sliced bevel, and the avoiding notch is located at a bending position of the sliced bevel when the sliced bevel is subjected to edge folding.

Further, the reinforcing band is located in the band-receiving groove, and the width of the band-receiving groove is greater than the width of the hem-receiving groove.

Further, the depth of the sheet edge accommodating groove is 1-1.5 mm; the thickness of the edge folding strip is 1-1.2 mm.

The application discloses another technical scheme:

a pressing device is used in the gluing and pressing forming method of the upper part, and comprises a base, a plurality of groups of pressing components and a plurality of levers, wherein the pressing components are arranged on the base, each pressing component comprises a lower die holder detachably connected with the base, a pressing plate arranged above the lower die holder, a plurality of guide rods connected to the bottom surface of the pressing plate are in sliding fit with the base, a detachable upper die head is arranged on the pressing plate, the top of the pressing plate is connected with a pressing head, a pin shaft fixedly connected with the pressing head is in fit connection with a strip-shaped hole arranged at one end corresponding to the lever, the middle part of the lever is pivoted on a corresponding vertical plate of the base, and the other end of the lever is connected with a lifting driving mechanism arranged on the base.

Further, the lifting driving mechanism comprises a cylinder fixedly connected with the base and a driving head fixedly connected with the cylinder, the other end of the lever is matched and connected with a corresponding limiting hole on the circumferential surface of the driving head, and the other end of the lever is in a ball head shape.

Further, the upper die head comprises a die plate detachably connected with the pressing plate, a fixed pressing foot is arranged on the bottom surface of the die plate, and a pattern indentation is arranged on the pressing surface of the fixed pressing foot.

Furthermore, a cavity is formed in the bottom surface of the template, a lifting cross rod is arranged in the cavity, a movable presser foot is sleeved on the lifting cross rod in a sliding mode, a convex shaft fixedly arranged on the movable presser foot is connected with a guide chute positioned on the inner wall of the cavity in an inserting mode, a reset spring sleeved on the lifting cross rod drives the movable presser foot to be far away from the fixed presser foot, and the template is pressed downwards to enable the movable presser foot to be close to the fixed presser foot.

Furthermore, the lower die base is connected with the supporting table corresponding to the base through a corresponding locking mechanism, the upper die head is connected with the pressing plate through a corresponding locking mechanism, the locking mechanism comprises two symmetrically-arranged swing arms, the swing arms are pivoted on the pressing plate, one ends of the swing arms are connected with the pressing plate through tension springs, rollers are arranged at the other ends of the swing arms, and the rollers can be horizontally inserted into corresponding locking grooves in the die plate.

The technical scheme can show that the invention has the advantages that: the stubble connecting end of the block component processed by the method has small thickness during laminating connection, large connecting surface and firm connection when the edges are tangentially, flatly and flatly connected, and the connecting seam is flat and beautiful; the filling of the soft transition strip ensures that the vamp and the shoe lining have good fitting property and are also connected and fastened; the lower die base and the upper die head of the pressing device are replaceable, so that the pressing assembly is matched with the vamp model, and all the splicing seams can be pressed simultaneously and sequentially, so that the working efficiency is high, and the batch processing is convenient; the connection which is laid flat and tangent at the edge can be extruded, so that the connection is more reliable and stable.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.

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 drawings without creative efforts.

Fig. 1 is a schematic view of the stub end processing of the laminated member of the present invention.

Fig. 2 is a schematic diagram of the splicing of the laminated part and the pressed part of the present invention.

Fig. 3 is a schematic view of the processing of the connecting stub of the pressing member of the present invention.

Fig. 4 is a schematic illustration of the splicing of the pressing members of the present invention.

Fig. 5 is a schematic structural diagram of the pressing device of the present invention.

Fig. 6 is a schematic structural view of the locking mechanism of the pressing device of the present invention.

Fig. 7 is a schematic structural diagram of an upper mold head of the pressing device of the present invention.

List of reference numerals: the device comprises a laminating component 1, a sheet edge accommodating groove 11, a chipped inclined surface 12, an avoiding notch 13, a pressed component 2, an edge thickness 21, a pressing component 3, a belt accommodating groove 31, a flanging accommodating groove 32, a right-angle chamfering groove 33, a flanging strip 34, an adhesive 4, a reinforcing belt 5, a transition strip 6, a pressing device 7, a base 71, a vertical plate 711, a supporting platform 712, a cylinder 72, a driving head 73, a lever 74, a pressing component 75, a pressing head 751, a pressing plate 752, an upper die head 753, a template 7531, a cavity 7532, a guide chute 7533, a fixed pressing foot 7534, a lifting cross bar 7535, a movable pressing foot 7536, a convex shaft 7537, a return spring 7538, a locking groove 7539, an 754, a lower die seat 755, a locking mechanism 76, a swing arm 761, a tension spring 762 and a roller 763.

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.

Referring to fig. 1 to 7, the present application is further explained, and referring to fig. 1, 2, 3 and 4, the method for gluing and forming upper parts is used for splicing, producing and manufacturing upper parts of leather shoes, the upper parts are completed by at least 2 block parts, the block parts are laminated parts 1 or pressed parts 2 or pressed parts 3, the connecting edges of the block parts are connected after finishing the processing of the connecting end, the laminated parts 1 and the pressed parts 2 are overlapped and glued up and down or the edges of two pressed parts 3 are flatly laid and glued together tangentially, the production and manufacturing of the upper are completed, the gluing and forming steps of the upper parts are as follows:

s01: the method comprises the following steps of (1) processing a stubble connecting end of a block part, wherein stubble pulling and sheet edge cutting are carried out on the inner side of the connecting end of the laminating part 1 to form a sheet cutting inclined surface 12, a sheet edge accommodating groove 11 extending to the end surface is processed on the inner side surface of the laminating part 1 after sheet edge cutting, the width of the sheet edge accommodating groove 11 is larger than that of the sheet cutting inclined surface 12, edge folding bonding processing is carried out on the sheet cutting inclined surface 12, and edge folding processing can avoid burr exposure on the outer side and enable the appearance of a connecting seam to be attractive; the inner side of the connecting end part of the pressed part 2 is processed by stubble removing and edge processing, so that the edge thickness 21 of the pressed part 2 is matched with the depth corresponding to the blade edge accommodating groove 11, and the stubble removing and edge processing of the pressed part 2 can make the connecting part smooth and comfortable to wear; the end of the pressing part 3 is folded to form a plane end face;

s02: when the laminated part 1 is connected with the pressed part 2, the pressed part 2 is matched, bonded and connected with the sheet edge accommodating groove 11, so that the thickness of a splicing part can be reduced, the appearance is attractive, and burrs at a connecting seam can not be leaked, a soft transition strip 6 is bonded at an obtuse angle connecting part formed by the laminated part 1 and the pressed part 2, the inner side surface of the soft transition strip 6 forms an arc-shaped surface, and two ends of the arc-shaped surface respectively extend to the laminated part 1 and the pressed part 2, so that the splicing part is more gradual and comfortable; when two opposite-pressing components 3 are connected, the end faces of the connecting planes of the two opposite-pressing components 3 are bonded and connected through an adhesive 4, the lower part of the connecting position of the two opposite-pressing components 3 is fixed through a reinforcing belt 5, and the outer surface of the reinforcing belt 5 is flush with the inner side face of the opposite-pressing component 3, so that the connecting position is smooth;

s03: and (3) firmly pressing the joint of the laminated component 1 and the pressed component 2 with patterns by using a pressing device 7 or pressing the joint of the two pressed components 3 with relative extrusion patterns by using the pressing device 7, and pressing with the relative extrusion patterns to ensure that the edges are tangentially laid flat and bonded for connection and are more firm.

In this application, in step S01, when processing the stubble end of pressing part 3, process a area holding tank 31 that extends to the terminal surface on the corresponding end medial surface of pressing part 3, process a hem holding tank 32 that extends to the terminal surface in the bottom of taking holding tank 31, process a right angle grooving 33 that extends to the terminal surface in the bottom of hem holding tank 32 and form a hem strip 34, hem 34 is handled the back to hem strip 34 the hem strip 34 forms "L" shape and a limit is connected with the laminating of the bottom surface of hem holding tank 32, just reinforcing band 5 is located in taking holding tank 31, just the width of taking holding tank 31 is greater than the width of hem holding tank 32, wherein, the medial surface of hem strip 34 scribbles the glue film, and reinforcing band 5 can pressfitting on the horizontal end of hem strip 34, makes the hem stable in structure, adopts this kind of structure to make the connection terminal surface avoid spilling deckle edge and can make the link personally submit plane shape simultaneously, the connection area is increased, so that the connection is firm.

In this application, in step S01, be equipped with one on chipping inclined plane 12 and dodge breach 13, when the hem on chipping inclined plane 12 was processed the department of bending of chipping inclined plane 12 was located dodging breach 13, avoided the department of bending extrusion to exert great extrusion force on the block surface and cause the department of bending surface transition protrusion.

Preferably, the depth of the sheet edge accommodating groove 11 is 1-1.5 mm; the thickness of the edge folding strip 34 is 1-1.2 mm.

The application discloses another technical scheme:

as shown in fig. 5, a pressing device 7 is used in the above-mentioned upper part glue pressing method, and includes a base 71, multiple sets of pressing assemblies 75 and multiple levers 74 disposed on the base 71, where the multiple sets of pressing assemblies 75 can press multiple vamps together, the pressing assembly 75 includes a lower die base 755 detachably connected to the base 71, a pressing plate 752 disposed above the lower die base 755, multiple guide rods 754 connected to a bottom surface of the pressing plate 752 and the base 71 are in sliding fit, the pressing plate 752 has a detachable upper die 753, a pressing head 751 is connected to a top of the pressing plate 752, a pin fixedly connected to the pressing head 751 is in fit connection with a strip-shaped hole located at one end of the corresponding lever 74, a middle portion of the lever 74 is pivoted to a corresponding vertical plate 711 of the base 71, and another end of the lever 74 is connected to a lifting driving mechanism disposed on the base 71, the upper die seat 755 is provided with a concave cavity for placing the vamp, so that the limiting of the vamp is realized, the lower die seat 755 and the upper die head 753 can be replaced, the upper die seat 755 is convenient for vamp processing of shoes with different specifications, the utilization rate of the device is high, and the occupied space of the device can be reduced.

The lifting driving mechanism comprises a cylinder 72 fixedly connected with the base 71 and a driving head 73 fixedly connected with the cylinder 72, the other end of the lever 74 is matched and connected with a corresponding limiting hole on the peripheral surface of the driving head 73, the other end of the lever 74 is in a ball head shape, the driving head 73 is lifted to drive the lever 74 to swing so as to drive the pressure head 751 to lift to realize die opening and closing driving, the structure is simple, and the work is reliable.

The upper die head 753 comprises a die plate 7531 detachably connected with the pressing plate 752, a fixing presser foot 7534 is arranged on the bottom surface of the die plate 7531, a pattern indentation is formed in the pressing surface of the fixing presser foot 7534, when the laminating part 1 and the pressed part 2 are stacked up and bonded, only the upper die head 753 of the fixing presser foot 7534 is replaced, meanwhile, the laminating is carried out on a plurality of splicing seams, the stress is uniform, and the working efficiency is high.

As shown in fig. 7, when two opposing pressing members 3 are flatly placed and adhesively connected to each other with their pressing edges being tangent to each other, the upper die head 753 includes not only a fixed presser 7534 but also a movable presser 7536, the die plate 7531 has a cavity 7532 on a bottom surface thereof, the cavity 7532 having a lifting rail 7535 therein, the movable pressure foot 7536 is slidably sleeved on the lifting cross bar 7535, a convex shaft 7537 fixedly arranged on the movable pressure foot 7536 is in inserted connection with a guide chute 7533 positioned on the inner wall of the cavity 7532, when the template 7531 is lifted up, a return spring 7538 sleeved on the lifting cross rod 7535 drives the movable presser foot 7536 to be far away from the fixed presser foot 7534, the template 7531 is pressed down so that the movable presser foot 7536 approaches the fixed presser foot 7534, the movable presser foot 7536 drives the corresponding pressing component 3 to move towards the other pressing component 3 in the moving process, so that the two pressing components 3 are bonded more reliably.

As shown in fig. 6, the lower die holder 755 is connected to the supporting platform 712 corresponding to the base 71 through a corresponding locking mechanism 76, the upper die head 753 is connected to the pressing plate 752 through a corresponding locking mechanism 76, the locking mechanism 76 includes two symmetrically arranged swing arms 761, the swing arms 761 are pivotally connected to the top surface of the pressing plate 752, the top of the die plate 7531 is fittingly connected to a limiting hole on the pressing plate 752, the top surface of the die plate 7531 is provided with slots corresponding to the number of the locking mechanisms 76, the side walls of the slots are provided with locking slots 7539 communicating with the outside, one end of the swing arms 761 is connected to the pressing plate 752 through a tension spring 762, the other end of the swing arms 761 is provided with a roller 763, the roller 763 can be horizontally inserted into the corresponding locking slot 7539 in the die plate 7531 under the action of the tension spring 762 to lockingly connect the die plate 7531 to the pressing plate 752, the locking process is simple, and the connection structure of the support 712 and the lower die seat 755 are the same.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.