Edge covering mechanism for leather shell machine

Abstract

The utility model discloses an edge covering mechanism for a leather shell machine, which comprises a feeding assembly and an edge covering assembly, the feeding assembly is arranged at the front end of the edge covering assembly, the edge covering assembly comprises an edge covering fixing support, a feeding roller unit and an edge folding unit, the feeding roller unit and the edge folding unit are both arranged on the edge covering fixing support, and the feeding roller unit is arranged on the edge folding unit. The feeding roller unit comprises a first feeding roller module, a second feeding roller module and a third feeding roller module, the edge folding unit comprises a first edge folding module and a second edge folding module, the first feeding roller module is located at the front end of the second feeding roller module, and the third feeding roller module is located at the rear end of the second feeding roller module. The second edge folding module is arranged between the first feeding roller module and the second feeding roller module, and the first edge folding module is arranged between the second feeding roller module and the third feeding roller module; the device is high in automation degree, the function that the two sides of the surface paper cover the surface of the leather shell can be automatically and rapidly achieved, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of book edge wrapping, in particular to an edge wrapping mechanism for a leather case machine. Background Technique

[0002] In the prior art, in order to better protect books from damage, people often cover a layer of leather case on the surface of books. However, there are various ways to make the leather cases of books. The edge wrapping mechanisms of existing edge wrapping equipment often only have the function of single-sided and single-side edge wrapping, that is, after edge wrapping one side of the front side or the rear side of the front and rear sides of the leather case, or one side of the left side or the right side of the left and right sides of the leather case, the semi-finished product is taken out, and then put into the edge wrapping mechanism or flowed into the next edge wrapping mechanism for secondary processing to complete the edge wrapping of the front and rear sides or the left and right sides. Such a structural design often has problems of low automation degree, time-consuming and laborious, large manual labor intensity, low edge wrapping efficiency, and the need for manual secondary placement, large human factors, poor processing accuracy, and poor practicability.

[0003] In view of the problems in the related art that existing edge wrapping equipment often has low automation degree, is time-consuming and laborious, has a large manual labor intensity, low edge wrapping efficiency, and the need for manual secondary placement, large human factors, poor processing accuracy, and poor practicability, there is still a lack of a better technical solution. Content of the Utility Model

[0004] In view of this, it is necessary to provide an edge wrapping mechanism for a leather case machine to at least solve the problems in the related art that existing edge wrapping equipment often has low automation degree, is time-consuming and laborious, has a large manual labor intensity, low edge wrapping efficiency, and the need for manual secondary placement, large human factors, poor processing accuracy, and poor practicability.

[0005] An embodiment of the present application provides a edge - wrapping mechanism for a case - making machine, which includes a feeding component and an edge - wrapping component. The feeding component is arranged at the front end of the edge - wrapping component. The edge - wrapping component includes an edge - wrapping fixed bracket, a feeding roller unit and a hemming unit. The feeding roller unit and the hemming unit are both arranged on the edge - wrapping fixed bracket. The feeding roller unit includes a first feeding roller module, a second feeding roller module and a third feeding roller module. The hemming unit includes a first hemming module and a second hemming module. The first feeding roller module is located at the front end of the second feeding roller module, and the third feeding roller module is located at the rear end of the second feeding roller module. The second hemming module is arranged between the first feeding roller module and the second feeding roller module, and the first hemming module is arranged between the second feeding roller module and the third feeding roller module. During operation, the feeding component is used to send the paper - faced case adhesive body to the edge - wrapping component. The first feeding roller module, the second feeding roller module and the third feeding roller module are used to drive the paper - faced case adhesive body to move back and forth. The first hemming module and the second hemming module are used to fold and adhere the front and rear sides of the paper to the case.

[0006] In one embodiment, the feeding component includes a feeding fixed bracket and a feeding synchronous belt drive module. The feeding fixed bracket is fixed to the front end of the edge - wrapping fixed bracket. The feeding synchronous belt drive module includes a feeding drive motor, a feeding driving active pulley, a feeding driving driven pulley and a feeding conveyor belt. The feeding driving active pulley and the feeding driving driven pulley are rotatably arranged on the feeding fixed bracket. The feeding drive motor is fixed on the feeding fixed bracket and is in transmission connection with the feeding driving active pulley. The feeding conveyor belt is wrapped around the outer surfaces of the feeding driving active pulley and the feeding driving driven pulley. During operation, the feeding drive motor drives the feeding driving active pulley and the feeding driving driven pulley to rotate, thereby driving the feeding conveyor belt to rotate, and thus sending the paper - faced case adhesive body to the edge - wrapping component.

[0007] In one of the embodiments, the feeding roller unit also includes an auxiliary feeding module and a feeding drive module, the auxiliary feeding module and the feeding drive module are fixed on the edging fixing bracket, the auxiliary feeding module is located at the front end of the first feeding roller module, the auxiliary feeding module includes a pressure driving cylinder and a pressure roller, the pressure roller is arranged on the air rod of the pressure driving cylinder, the feeding drive module includes a feeding drive motor and a feeding synchronization chain, the feeding drive motor is transmission-connected to the first feeding roller module, the second feeding roller module and the third feeding roller module through the feeding synchronization chain; when working, the auxiliary feeding module is used to assist the facial paper skin shell adhesive body to enter the first feeding roller module, and the feeding drive module is used to provide a power source for the first feeding roller module, the second feeding roller module and the third feeding roller module to drive the facial paper skin shell adhesive body to move forward and backward.

[0008] In one of the embodiments, the first feeding roller module, the second feeding roller module and the third feeding roller module all include relatively arranged feeding active roller and feeding driven roller, a skin paper activity area is formed between the feeding active roller and the feeding driven roller, transmission gears are provided on both sides of the feeding active roller and the feeding driven roller, the transmission gear of the feeding active roller and the transmission gear of the feeding driven roller are meshed with each other, a synchronous gear is provided on the feeding active roller and located on the outside of the transmission gear, and the feeding synchronous chain is meshed with the synchronous gear; when working, the feeding drive module drives the feeding active roller to rotate through the feeding synchronous chain and the synchronous gear, and at the same time drives the feeding driven roller to roll through the feeding active roller through the transmission gear.

[0009] In one of the embodiments, the first folding module and the second folding module both include a folding avoidance device and a folding device, the folding avoidance device is arranged on the hemming fixing bracket, and the folding device is arranged on the folding avoidance device; when working, the folding avoidance device is used to lift the folding device of the first folding module or the folding device of the second folding module, and the folding device is used to fold both sides of the facing paper shell adhesive body.

[0010] In one embodiment, the hemming avoidance device includes a hemming drive cylinder, a hemming slide rail, a first hemming connecting rod, a hemming transmission shaft, a hemming crank, a second hemming connecting rod, and a hemming fixing rod. The hemming drive cylinder and the hemming slide rail are both fixed on the edge binding fixing bracket. The hemming transmission shaft is rotatably arranged on the hemming slide rail. One end of the first hemming connecting rod is in transmission connection with the air rod of the hemming drive cylinder, and the other end of the first hemming connecting rod is in transmission connection with one end of the hemming transmission shaft. One end of the hemming crank is in transmission connection with the other end of the hemming transmission shaft and one end of the second hemming connecting rod. The hemming device is slidably arranged on the hemming slide rail and is in transmission connection with the other end of the hemming crank. The other end of the second hemming connecting rod is in transmission connection with the hemming fixing rod. During operation, the hemming drive cylinder drives the hemming transmission shaft to rotate through the air rod and the first connecting rod, thereby driving the hemming crank and the second hemming connecting rod to work, and further driving the hemming device to perform a lifting movement on the hemming slide rail.

[0011] In one embodiment, the hemming device includes a hemming fixing bracket, a hemming fixing shaft, a hemming swing block, a hemming fixing bolt, and a hemming embedding plate. The lower end of the hemming fixing bracket is slidably arranged on the hemming slide rail and is in transmission connection with the hemming crank. The hemming fixing shaft is fixed on the hemming fixing bracket. The hemming swing block is provided with a swinging long hole. The hemming swing block swings on the hemming fixing shaft through the swinging long hole and the hemming fixing bolt. The hemming embedding plate is arranged on the hemming swing block. A face paper hemming angle is formed between the hemming swing block and the hemming embedding plate. The opening of the face paper hemming angle formed between the hemming swing block of the first hemming module and the hemming embedding plate of the first hemming module is arranged forward, and the opening of the face paper hemming angle formed between the hemming swing block of the second hemming module and the hemming embedding plate of the second hemming module is arranged backward. During operation, the face paper shell adhesive body presses against the hemming swing block and the hemming embedding plate and swings around the hemming fixing bolt with the hemming fixing shaft as the base point, thereby covering the front and rear sides of the face paper on the shell through the face paper hemming angle.

[0012] The beneficial effects of the present utility model are as follows: This application is reasonably designed and novel in structure. The feeding component uses a feeding synchronous belt drive module to feed the face paper and shell adhesive body and send it into the edge wrapping component. The edge wrapping component uses an auxiliary feeding module to press the face paper and shell adhesive body, enabling the face paper and shell adhesive body to better enter the face paper activity area. By using a feeding drive module to drive the first feeding roller module, the second feeding roller module, and the third feeding roller module to roll, the face paper and shell adhesive body moves in the shell face paper activity area. At the same time, during the movement of the face paper and shell adhesive body in the face paper activity area, the first folding edge module and the second folding edge module are used to fold the front and back side face papers of the shell adhesive body respectively, so that the face paper is wrapped on the shell. There is no need for manual operation, and the degree of automation is high. The front and back sides of the face paper can be quickly wrapped on the front and back sides of the shell, greatly improving the edge wrapping efficiency of the shell and reducing the labor intensity of workers. The feeding of the face paper and the shell and the edge wrapping process on both sides can be achieved without taking out and repositioning, and it has strong practicability. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of one perspective of the embodiment of the present application;

[0014] Figure 2 It is a schematic structural diagram of another perspective of the embodiment of the present application;

[0015] Figure 3 It is a schematic structural diagram of the folding edge device of the embodiment of the present application. Detailed Embodiments

[0016] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0017] It should be noted that when a component is referred to as being "mounted on" another component, it can be directly mounted on the other component or there may also be an intermediate component. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. When a component is considered to be "fixed to" another component, it can be directly fixed to the other component or there may be an intermediate component at the same time.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this utility model belongs. The terms used in the description of this utility model herein are for the purpose of describing specific embodiments only and are not intended to limit this utility model. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0019] Please refer to Figures 1 to 3 , an edge wrapping mechanism for a case maker according to an embodiment of the present application, which includes a feeding assembly 100 and an edge wrapping assembly 200. The feeding assembly 100 is disposed at the front end of the edge wrapping assembly 200. The edge wrapping assembly 200 includes an edge wrapping fixed bracket 21, a feeding roller unit and a folding unit. The feeding roller unit and the folding unit are both disposed on the edge wrapping fixed bracket 21. The feeding roller unit includes a first feeding roller module 22, a second feeding roller module 23 and a third feeding roller module 24. The folding unit includes a first folding module 25 and a second folding module 26. The first feeding roller module 22 is located at the front end of the second feeding roller module 23. The third feeding roller module 24 is located at the rear end of the second feeding roller module 23. The second folding module 26 is disposed between the first feeding roller module 22 and the second feeding roller module 23. The first folding module 25 is disposed between the second feeding roller module 23 and the third feeding roller module 24. During operation, the feeding assembly 100 is used to send the face paper case adhesive body to the edge wrapping assembly 200. The first feeding roller module 22, the second feeding roller module 23 and the third feeding roller module 24 are used to drive the face paper case adhesive body to move back and forth. The first folding module 25 and the second folding module 26 are used to fold and adhere the front and rear sides of the face paper to the case.

[0020] It should be noted that by using the feeding assembly 100 to feed the face paper case adhesive body and send it into the edge wrapping assembly 200, the edge wrapping assembly 200 uses the first feeding roller module 22, the second feeding roller module 23 and the third feeding roller module 24 to move the face paper case adhesive body in the moving area of the case face paper. At the same time, during the movement of the face paper case adhesive body in the moving area of the face paper, the first folding module 25 and the second folding module 26 are used to fold the front and rear sides of the face paper of the case adhesive body respectively, so that the face paper is wrapped on the case. There is no need for manual operation, and the degree of automation is high. The front and rear sides of the face paper can be quickly wrapped on the front and rear sides of the case, greatly improving the edge wrapping efficiency of the case and reducing the labor intensity of workers. The feeding of the face paper and the case and the edge wrapping process on both sides can be realized without taking out and re-placing.

[0021] To achieve the feeding function of the leather case bonding body, in some alternative embodiments, the feeding assembly 100 includes a feeding fixed bracket 11 and a feeding synchronous belt drive module 12. The feeding fixed bracket 11 is fixed to the front end of the edge-wrapping fixed bracket 21. The feeding synchronous belt drive module 12 includes a feeding drive motor, a feeding drive driving wheel 121, a feeding drive driven wheel 122 and a feeding conveyor belt 123. The feeding drive driving wheel 121 and the feeding drive driven wheel 122 are rotatably arranged on the feeding fixed bracket 11. The feeding drive motor is fixed to the feeding fixed bracket 11 and is in transmission connection with the feeding drive driving wheel 121. The feeding conveyor belt 123 is wrapped around the outer surfaces of the feeding drive driving wheel 121 and the feeding drive driven wheel 122. During operation, the feeding drive motor drives the feeding drive driving wheel 121 and the feeding drive driven wheel 122 to rotate, thereby driving the feeding conveyor belt 123 to rotate, and then conveying the facial tissue leather case bonding body to the edge-wrapping assembly 200.

[0022] It should be noted that the feeding assembly 100 feeds the facial tissue leather case bonding body by using the feeding synchronous belt drive module and sends it into the edge-wrapping assembly. Specifically, the structural design of using the feeding drive motor to drive the feeding drive driving wheel 121 and the feeding drive driven wheel 122 improves the accuracy of this application, and the feeding conveyor belt 123 enables the facial tissue leather case bonding body to enter the first edge-folding module 25 smoothly and stably.

[0023] To better achieve the function of the leather case bonding body entering and being driven, in some alternative embodiments, the feeding roller unit further includes an auxiliary feeding module 27 and a feeding drive module 28. The auxiliary feeding module 27 and the feeding drive module 28 are fixed to the edge-wrapping fixed bracket 21. The auxiliary feeding module 27 is located at the front end of the first feeding roller module 22. The auxiliary feeding module 27 includes a pressing drive cylinder and a pressing roller. The pressing roller is arranged on the air rod of the pressing drive cylinder. The feeding drive module 28 includes a feeding drive motor 281 and a feeding synchronous chain. The feeding drive motor 281 is in transmission connection with the first feeding roller module 22, the second feeding roller module 23 and the third feeding roller module 24 through the feeding synchronous chain. During operation, the auxiliary feeding module 27 is used to assist the facial tissue leather case bonding body to enter the first feeding roller module 22, and the feeding drive module 28 is used to provide a power source for driving the facial tissue leather case bonding body to move back and forth by the first feeding roller module 22, the second feeding roller module 23 and the third feeding roller module 24.

[0024] It should be noted that the edge-wrapping assembly 200 presses the facial tissue leather case bonding body by using the auxiliary feeding module 27, so that the facial tissue leather case bonding body can better enter the facial tissue active area, making the operation of this application smoother and preventing the problem that the facial tissue leather case bonding body cannot enter the facial tissue active area.

[0025] In order to better achieve the driving and conveying functions, in some alternative embodiments, the first feeding roller module 22, the second feeding roller module 23, and the third feeding roller module 24 each include a feeding driving roller 241 and a feeding driven roller 242 arranged oppositely. A corrugated board face paper movable area is formed between the feeding driving roller 241 and the feeding driven roller 242. Transmission gears are provided on both sides of the feeding driving roller 241 and the feeding driven roller 242. The transmission gear of the feeding driving roller 241 meshes with the transmission gear of the feeding driven roller 242. A synchronous gear is provided on the feeding driving roller 241 and outside the transmission gear. The feeding synchronous chain meshes with the synchronous gear. During operation, the feeding driving module 28 drives the feeding driving roller 241 to rotate through the feeding synchronous chain and the synchronous gear, and at the same time drives the feeding driven roller 242 to roll through the transmission gear of the feeding driving roller 241.

[0026] It should be noted that by using the feeding driving module 28 to drive the first feeding roller module 22, the second feeding roller module 23, and the third feeding roller module 24 to roll, specifically, using the feeding driving motor 281 as the power source, driving the transmission gears of the feeding driving roller 241 and the feeding driven roller 242 to rotate through the feeding synchronous chain, so that the first feeding roller module 22, the second feeding roller module 23, and the third feeding roller module 24 roll for feeding, which improves the accuracy of this application.

[0027] In some alternative embodiments, the first hemming module 25 and the second hemming module 26 each include a hemming avoidance device 261 and a hemming device 262. The hemming avoidance device 261 is arranged on the edge binding fixed bracket 21, and the hemming device 262 is arranged on the hemming avoidance device 261. During operation, the hemming avoidance device 261 is used to lift the hemming device 262 of the first hemming module 25 or the hemming device 262 of the second hemming module 26, and the hemming device 262 is used to hem both sides of the face paper corrugated board bonding body.

[0028] To achieve the stable operation of this application, in some alternative embodiments, the hemming avoidance device 261 includes a hemming drive cylinder 2611, a hemming slide rail 2612, a first hemming connecting rod 2613, a hemming transmission shaft 2614, a hemming crank 2615, a second hemming connecting rod 2616, and a hemming fixing rod 2617. The hemming drive cylinder 2611 and the hemming slide rail 2612 are both fixed on the edge binding fixing bracket 21. The hemming transmission shaft 2614 is rotatably arranged on the hemming slide rail 2612. One end of the first hemming connecting rod 2613 is in transmission connection with the air rod of the hemming drive cylinder 2611, and the other end of the first hemming connecting rod 2613 is in transmission connection with one end of the hemming transmission shaft 2614. One end of the hemming crank 2615 is in transmission connection with the other end of the hemming transmission shaft 2614 and one end of the second hemming connecting rod 2616. The hemming device 262 is slidably arranged on the hemming slide rail 2612 and is in transmission connection with the other end of the hemming crank 2615. The other end of the second hemming connecting rod 2616 is in transmission connection with the hemming fixing rod 2617. During operation, the hemming drive cylinder 2611 drives the hemming transmission shaft 2614 to rotate through the air rod and the first connecting rod, thereby driving the hemming crank 2615 and the second hemming connecting rod 2616 to work, and further driving the hemming device 262 to perform a lifting movement on the hemming slide rail 2612.

[0029] To achieve the function of stable edge binding of this application, in some alternative embodiments, the hemming device 262 includes a hemming fixing bracket 2621, a hemming fixing shaft 2622, a hemming swing block 2623, a hemming fixing bolt 2624, and a hemming embedding plate 2625. The lower end of the hemming fixing bracket 2621 is slidably arranged on the hemming slide rail 2612 and is in transmission connection with the hemming crank 2615. The hemming fixing shaft 2622 is fixed on the hemming fixing bracket 2621. The hemming swing block 2623 is provided with a swinging long hole. The hemming swing block 2623 swings on the hemming fixing shaft 2622 through the swinging long hole and the hemming fixing bolt 2624. The hemming embedding plate 2625 is arranged on the hemming swing block 2623. A face paper hemming angle 2626 is formed between the hemming swing block 2623 and the hemming embedding plate 2625. The opening of the face paper hemming angle 2626 formed between the hemming swing block 2623 of the first hemming module 25 and the hemming embedding plate 2625 of the first hemming module 25 faces forward. The opening of the face paper hemming angle 2626 formed between the hemming swing block 2623 of the second hemming module 26 and the hemming embedding plate 2626 of the second hemming module 26 faces backward. During operation, the face paper and shell adhesive body presses against the hemming swing block 2623 and the hemming embedding plate 2625 and swings around the hemming fixing shaft 2622 with the hemming fixing bolt 2624 as the base point, thereby wrapping the front and rear sides of the face paper on the shell through the face paper hemming angle 2626.

[0030] It should be noted that the hemming drive cylinder 2611 can drive the crank structure formed by the hemming slide rail 2612, the first hemming connecting rod 2613, the hemming transmission shaft 2614, the hemming crank 2615, the second hemming connecting rod 2616 and the hemming fixed rod 2617. Its function is to drive the hemming device 262 of the second hemming module 26 or the first hemming module 25 to lift, preventing the hemming device 262 of the second hemming module 26 from blocking the advancing line of the face paper and leather case adhesive body or the hemming device 262 of the first hemming module 25 from blocking the retreating line of the face paper and leather case adhesive body during front-side hemming or back-side hemming. The hemming swing block 2623 and the hemming insertion plate 2625 of the hemming device 262 swing on the hemming fixed shaft 2622 along the aperture direction of the long-strip adjustment hole with the hemming fixed bolt 2624 as the base point.

[0031] Furthermore, when the face paper and leather case adhesive body is pressed by the auxiliary feeding module 27 and enters the first feeding roller module 22, the hemming device 262 of the second hemming module 26 is lifted and avoided by the hemming avoidance device 261, so that the first feeding roller module 22 and the second feeding roller module 23 can drive the face paper and leather case adhesive body to move forward normally without being blocked. When the front side of the face paper enters the face paper hemming angle 2626 of the first hemming module 25, as the advancing thrust of the first feeding roller module 22 and the second feeding roller module 23 increases, the hemming swing block 2623 and the hemming insertion plate 2625 of the first hemming module 25 swing on the hemming fixed shaft 2622, forcing the front side of the face paper to deform and bend, so that the front side of the face paper adheres to the front side of the leather case to complete the front-side hemming process; after the front-side hemming process is completed, the hemming device 262 of the first hemming module 25 is lifted and avoided by the hemming avoidance device 261, so that the second feeding roller module 23 and the third feeding roller module 24 can drive the face paper and leather case adhesive body to move backward normally without being blocked. When the back side of the face paper enters the face paper hemming angle 2626 of the second hemming module 26, as the retreating thrust of the second feeding roller module 23 and the third feeding roller module 24 increases, the hemming swing block 2623 and the hemming insertion plate 2625 of the second hemming module 26 swing on the hemming fixed shaft 2622, forcing the back side of the face paper to deform and bend, so that the back side of the face paper adheres to the back side of the leather case to complete the back-side hemming process.

[0032] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0033] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A edge-wrapping mechanism for a case-making machine, characterized in that, It includes a feeding component and a hemming component. The feeding component is arranged at the front end of the hemming component. The hemming component includes a hemming fixed bracket, a feeding roller unit and a hemming unit. The feeding roller unit and the hemming unit are both arranged on the hemming fixed bracket. The feeding roller unit includes a first feeding roller module, a second feeding roller module and a third feeding roller module. The hemming unit includes a first hemming module and a second hemming module. The first feeding roller module is located at the front end of the second feeding roller module. The third feeding roller module is located at the rear end of the second feeding roller module. The second hemming module is arranged between the first feeding roller module and the second feeding roller module. The first hemming module is arranged between the second feeding roller module and the third feeding roller module. During operation, the feeding component is used to send the paperboard shell adhesive body to the hemming component. The first feeding roller module, the second feeding roller module and the third feeding roller module are used to drive the paperboard shell adhesive body to move back and forth. The first hemming module and the second hemming module are used to fold and adhere the front and rear sides of the paperboard to the shell.

2. The edge wrapping mechanism for the leather case machine according to claim 1, characterized in that, The feeding component includes a feeding fixed bracket and a feeding synchronous belt drive module. The feeding fixed bracket is fixed to the front end of the hemming fixed bracket. The feeding synchronous belt drive module includes a feeding drive motor, a feeding drive driving wheel, a feeding drive driven wheel and a feeding conveyor belt. The feeding drive driving wheel and the feeding drive driven wheel are rotatably arranged on the feeding fixed bracket. The feeding drive motor is fixed on the feeding fixed bracket and is in transmission connection with the feeding drive driving wheel. The feeding conveyor belt is coated on the outer surfaces of the feeding drive driving wheel and the feeding drive driven wheel. During operation, the feeding drive motor drives the feeding drive driving wheel and the feeding drive driven wheel to rotate, thereby driving the feeding conveyor belt to rotate, so as to convey the paperboard shell adhesive body to the hemming component.

3. The edge wrapping mechanism for a leather case machine according to claim 2, characterized in that, The feeding roller unit further includes an auxiliary feeding module and a feeding drive module. The auxiliary feeding module and the feeding drive module are fixed on the hemming fixed bracket. The auxiliary feeding module is located at the front end of the first feeding roller module. The auxiliary feeding module includes a pressing drive cylinder and a pressing roller. The pressing roller is arranged on the air rod of the pressing drive cylinder. The feeding drive module includes a feeding drive motor and a feeding synchronous chain. The feeding drive motor is in transmission connection with the first feeding roller module, the second feeding roller module and the third feeding roller module through the feeding synchronous chain. During operation, the auxiliary feeding module is used to assist the paperboard shell adhesive body to enter the first feeding roller module. The feeding drive module is used to provide a power source for the first feeding roller module, the second feeding roller module and the third feeding roller module to drive the paperboard shell adhesive body to move back and forth.

4. The edge wrapping mechanism for the leather case machine according to claim 3, characterized in that, The first feeding roller module, the second feeding roller module and the third feeding roller module all include a feeding driving roller and a feeding driven roller which are oppositely arranged. A moving area for the cover face paper is formed between the feeding driving roller and the feeding driven roller. Transmission gears are arranged on both sides of the feeding driving roller and the feeding driven roller. The transmission gear of the feeding driving roller meshes with the transmission gear of the feeding driven roller. A synchronous gear is arranged on the feeding driving roller outside the transmission gear. The feeding synchronous chain meshes with the synchronous gear. During operation, the feeding driving module drives the feeding driving roller to rotate through the feeding synchronous chain and the synchronous gear, and simultaneously drives the feeding driven roller to roll through the transmission gear by the feeding driving roller.

5. The edge wrapping mechanism for a case making machine according to claim 4, characterized in that, The first hemming module and the second hemming module both include a hemming avoiding device and a hemming device. The hemming avoiding device is arranged on the edge covering fixed bracket, and the hemming device is arranged on the hemming avoiding device. During operation, the hemming avoiding device is used to lift the hemming device of the first hemming module or the hemming device of the second hemming module, and the hemming device is used to hem both sides of the face paper cover adhesive body.

6. The edge wrapping mechanism for the case making machine according to claim 5, wherein, The hemming avoiding device includes a hemming driving cylinder, a hemming slide rail, a first hemming connecting rod, a hemming transmission shaft, a hemming crank, a second hemming connecting rod and a hemming fixed rod. The hemming driving cylinder and the hemming slide rail are both fixed on the edge covering fixed bracket. The hemming transmission shaft is rotatably arranged on the hemming slide rail. One end of the first hemming connecting rod is in transmission connection with the air rod of the hemming driving cylinder. The other end of the first hemming connecting rod is in transmission connection with one end of the hemming transmission shaft. One end of the hemming crank is in transmission connection with the other end of the hemming transmission shaft and one end of the second hemming connecting rod. The hemming device is slidably arranged on the hemming slide rail and is in transmission connection with the other end of the hemming crank. The other end of the second hemming connecting rod is in transmission connection with the hemming fixed rod. During operation, the hemming driving cylinder drives the hemming transmission shaft to rotate through the air rod and the first connecting rod, thereby driving the hemming crank and the second hemming connecting rod to work, and further driving the hemming device to move up and down on the hemming slide rail.

7. The edge wrapping mechanism for the case machine according to claim 6, characterized in that, The hemming device includes a hemming fixed bracket, a hemming fixed shaft, a hemming swing block, a hemming fixed bolt and a hemming insertion plate. The lower end of the hemming fixed bracket is slidably arranged on the hemming slide rail and is in transmission connection with the hemming crank. The hemming fixed shaft is fixed on the hemming fixed bracket. The hemming swing block is provided with a swing long hole. The hemming swing block swings on the hemming fixed shaft through the swing long hole and the hemming fixed bolt. The hemming insertion plate is arranged on the hemming swing block. A face paper hemming angle is formed between the hemming swing block and the hemming insertion plate. The opening of the face paper hemming angle formed between the hemming swing block of the first hemming module and the hemming insertion plate of the first hemming module is set forward. The opening of the face paper hemming angle formed between the hemming swing block of the second hemming module and the hemming insertion plate of the second hemming module is set backward. During operation, the face paper shell bonding body presses against the hemming swing block and the hemming insertion plate and swings around the hemming fixed shaft with the hemming fixed bolt as the base point, so as to wrap the front and back sides of the face paper on the shell through the face paper hemming angle.

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