Leather piece gluing machine

Abstract

The utility model relates to the field of production equipment. The utility model aims at providing a leather piece gluing machine. The leather piece gluing machine comprises a machine table, a plurality of glue outlet mechanisms arranged on the machine table and a plurality of rotation mechanisms correspondingly arranged at the glue output ends of the glue outlet mechanisms. The autorotation mechanism is used for bearing the leather sheets and driving the leather sheets to autorotate, and glue flows out from the glue output end of the glue outlet mechanism and coats the peripheries of the autorotation leather sheets. The leather piece gluing device is high in production efficiency and good in gluing effect, leather pieces of different types and specifications can be glued, manpower is reduced, and the effects of reducing cost and improving efficiency are achieved.

Description

Technical Field

[0001] The utility model relates to the field of production equipment, in particular to a leather piece glue coating machine. Background Art

[0002] In the manufacturing process of ball sports products, leather is an important production material, and in the production process of the product, the processing technology of leather is a crucial link in the entire production process. Among them, gluing is the key step to make the leather pieces stick together, and the effect of gluing has a great impact on the product quality.

[0003] In the previous leather gluing process, due to the differences in shapes and specifications of different types of leather, a large amount of manual work is often required to gluing the leather. However, manual gluing is time-consuming and expensive to produce. Operators are required to apply glue to the leather pieces one by one. This method is slow, the gluing quality cannot be guaranteed, and in the case of large-scale production, the efficiency cannot meet production needs. Utility Model Content

[0004] The purpose of the utility model is to provide a leather piece glue coating machine. The utility model has high production efficiency and good glue coating effect, can coat glue on leather pieces of different types and specifications, and reduces the use of manual labor.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] A leather piece glue coating machine comprises a machine platform, a plurality of glue discharging mechanisms arranged on the machine platform, and a plurality of self-rotating mechanisms correspondingly arranged at the glue output ends of the glue discharging mechanisms; the self-rotating mechanisms are used to carry the leather piece and drive the leather piece to rotate, and the glue flows out through the glue output ends of the glue discharging mechanisms and is coated around the self-rotating leather piece.

[0007] Compared with the prior art, the advantages of the utility model are:

[0008] 1. Through the cooperation of the glue discharging mechanism and the self-rotating mechanism at the glue output end of the glue discharging mechanism, when the self-rotating mechanism drives the leather piece to rotate, the periphery of the leather piece is coated with the glue flowing out of the glue outlet, thereby avoiding the tedious process of manual glue coating and achieving the effect of rapid glue coating.

[0009] 2. By setting up a glue coating disk, when the utility model applies glue, the glue coating disk fits the edge of the leather piece and rotates synchronously with the rotation of the leather piece, and through the cooperation between the swing mechanism and the glue coating disk, the glue coating disk keeps fitting with the edges of various leather pieces during rotation, and adapts to the different degrees of swing of the rotating edge of the leather piece, thereby realizing efficient coating of leather pieces of various shapes and specifications.

[0010] 3. The disassembly and assembly of the glue discharging head and the ejector cylinder are realized by the cooperation of the fixed column arranged at the rear end of the glue discharging head, the sleeve at the front end of the ejector cylinder and the abutment part, so as to achieve the effect of quick disassembly and assembly of the glue discharging head, which is convenient for daily cleaning and maintenance of the glue discharging head separately. When cleaning the glue discharging head, there is no need to clean the ejector cylinder, which greatly improves the life of the ejector cylinder and does not cause the precision of the ejector cylinder to decrease due to frequent cleaning. In addition, the glue discharging valve can be cleaned separately, which is more convenient and thorough.

[0011] 4. By setting a positioning component above the rotating component, the leather piece is limited by the downward pressure of the positioning component during the glue coating process, so that the leather piece does not move during the rotation process, thereby increasing the glue coating quality of the leather piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural schematic diagram of a leather sheet gluing machine of the utility model;

[0013] Figure 2 This is a front view of a leather gluing machine of the utility model;

[0014] Figure 3 It is a structural schematic diagram of the glue discharging mechanism of the utility model;

[0015] Figure 4 It is a structural schematic diagram of the glue discharging component of the utility model;

[0016] Figure 5 It is a structural schematic diagram of the ejector cylinder of the utility model;

[0017] Figure 6 It is a structural schematic diagram of the glue dispensing head of the utility model;

[0018] Figure 7 It is a structural schematic diagram of the glue supply component of the utility model;

[0019] Figure 8 This is a structural disassembly diagram of the pressure barrel of the utility model;

[0020] Fig. 9 It is a structural schematic diagram of the barrel cover of the utility model;

[0021] Fig.10 This is a structural schematic diagram of the rubber delivery pipeline of the utility model;

[0022] Fig.11 It is a structural schematic diagram of the pipe joint of the utility model;

[0023] Fig.12 It is a structural schematic diagram of the swing mechanism of the utility model;

[0024] Fig.13It is a partial structural schematic diagram of the swing mechanism of the utility model;

[0025] Fig.14 This is a partial structural schematic diagram of a leather piece gluing machine of the utility model;

[0026] Fig.15 It is a structural schematic diagram of the self-rotating mechanism of the utility model;

[0027] Fig.16 It is a structural schematic diagram of the rotating assembly of the utility model;

[0028] Fig.17 It is a structural schematic diagram of the drive unit B of the utility model;

[0029] Fig.18 It is a structural schematic diagram of the positioning assembly of the utility model;

[0030] Fig.19 It is a structural schematic diagram of the limiter of the utility model.

[0031] Description of labels:

[0032] Machine 1, glue discharging mechanism 2, glue discharging assembly 21, ejector cylinder 211, sleeve 2111, abutment 2112, fixing unit 2113, glue discharging head 212, glue discharging channel 2121, glue injection hole 2122, glue discharging nozzle 2123, positioning sleeve 2124, fixing column 2125, annular groove 2126, glue supply assembly 22, pressure barrel 221, barrel body 2211, barrel cover 2212, hose seat 2213, spring plunger 2214, glue delivery pipeline 222, glue delivery hose 2221, glue delivery hose 2222, pipe joint 2223, rubber sealing ring 22231, annular Positioning groove 22232, rotation mechanism 3, rotating component 31, rotating seat 311, magnetic attraction part 3111, driving unit B312, motor 3121, connecting column 3122, pulley 3123, transmission belt 3124, top cover 313, positioning component 32, positioning frame 321, one-way cylinder 322, limiter 323, connecting rod 3231, clamping part 3232, compression spring 3233, swinging component 4, base 41, driving unit A42, pushing cylinder 421, storage rack 422, swinging rod 43, bending rod 44, through hole 441, spring 45, glue coating disk 5. DETAILED DESCRIPTION

[0033] The content of the utility model is described in detail below in conjunction with the accompanying drawings and embodiments of the specification, but the protection content of the utility model is not limited to the following:

[0034] like Figure 1-19 The figure is a schematic diagram of an embodiment of a leather piece gluing machine provided by the utility model.

[0035] A leather gluing machine comprises a machine platform 1, a plurality of glue discharging mechanisms 2 arranged on the machine platform 1, and a plurality of self-rotating mechanisms 3 correspondingly arranged at the glue output ends of the glue discharging mechanisms 2; the self-rotating mechanisms 3 are used to carry leather pieces and drive the leather pieces to rotate, and the glue flows out through the glue output ends of the glue discharging mechanisms 2 and is coated around the self-rotating leather pieces.

[0036] The glue discharging mechanism 2 and the self-rotating mechanism 3 are both 2 groups, and the glue discharging mechanism 2 is arranged at intervals on the left and right sides of the machine 1, so that when the production link of placing the leather pieces is performed manually, it is convenient for the operator to place the leather pieces with both hands at the same time, so as to improve the production efficiency;

[0037] Furthermore, the glue discharging mechanism 2 and the rotation mechanism 3 are both more than 2 groups (specific selection can be made according to production needs), the purpose of which is to further increase production efficiency when the production link of placing the leather pieces is performed manually or mechanically.

[0038] It also includes a swing component 4 arranged on the machine 1; the glue discharging mechanism 2 includes a glue discharging component 21 for outputting glue and a glue supply component 22 connected to the glue discharging component 21 and supplying glue to the glue discharging component 21; the glue discharging component 21 is connected to the swing component 4, and the swing component 4 controls the glue output end of the glue discharging component 21 to approach or move away from the rotation mechanism 3.

[0039] The glue dispensing assembly 21 may be a pin-type glue dispensing valve, the glue dispensing head of which is fixedly connected to the pin cylinder. Of course, the glue dispensing assembly 21 more preferably includes a pin cylinder 211 and a glue dispensing head 212 (such as a pin cylinder 211) which is detachably connected to the front end of the pin cylinder 211. Figure 4-6 shown);

[0040] The glue outlet head 212 is provided with a glue outlet channel 2121 running through the front and rear ends thereof, and a glue injection hole 2122 connecting the glue supply assembly 22 and the glue outlet channel 2121 is provided on the side wall of the glue outlet head 212. A glue outlet nozzle 2123 communicating with the glue outlet channel 2121 is provided at the front end of the glue outlet head 212, and a positioning sleeve 2124 communicating with the glue outlet channel 2121 is provided at the rear end of the glue outlet head 212. The ejector cylinder 211 reciprocates and pushes the ejector into the glue outlet channel 2121 via the positioning sleeve 2124 to control the ejector to block or clear the glue injection hole 2122 and the glue outlet nozzle 2123; the glue flows out through the glue outlet nozzle 2123 and is coated around the rotating leather piece.

[0041] The glue outlet nozzle 2123 is a tubular structure with an inner diameter gradually decreasing from the back to the front, so as to enhance the glue coating accuracy.

[0042] The rear end face of the glue dispensing head 212 is provided with a plurality of fixing columns 2125, and an annular groove 2126 is provided on the outer wall of the fixing column 2125. The front end of the ejector cylinder 211 is provided with a plurality of sleeves 2111 into which the fixing columns 2125 can be inserted, and the sleeve 2111 is provided with abutting pieces 2112 for abutting the annular groove 2126, so as to realize the detachable connection between the glue dispensing head 212 and the ejector cylinder 211.

[0043] The sleeve 2111 is provided with a screw hole, and the abutment 2112 is a bolt screwed into the sleeve 2111 through the screw hole. The fixing column 2125 is inserted into the sleeve 2111, and the end of the bolt is screwed into the sleeve 2111 through the screw hole and abuts against the annular groove 2126 of the fixing column 2125 to realize the detachable connection between the fixing column 2125 and the sleeve 2111.

[0044] The glue supply assembly 22 includes a pressure barrel 221 for containing glue and a glue delivery pipeline 222 inserted in the pressure barrel 221 and connected to the glue injection hole 2122 .

[0045] The glue delivery pipeline 222 includes a glue delivery pipe 2221 inserted in the pressure barrel 221 , a glue delivery pipe 2222 connected to the glue delivery pipe 2221 , and a pipe joint 2223 provided between the glue delivery pipe 2221 and the glue delivery pipe 2222 . The glue delivery pipe 2222 is connected to the glue injection hole 2122 .

[0046] The pipe joint 2223 is provided with a plurality of rubber sealing rings 22231 to ensure the air tightness of the pressure barrel 221 .

[0047] The pressure barrel 221 includes a barrel body 2211 connected to an external gas circuit and a barrel cover 2212 (the barrel cover 2212 is provided with an air inlet connected to the gas circuit to provide pressure to the pressure barrel 221 so that glue can be smoothly discharged from the pressure barrel 221). The surface of the barrel cover 2212 is provided with a hose seat 2213 that allows the glue delivery hose 2221 to extend into the barrel body 2211. The inner wall of the hose seat 2213 is provided with a plurality of spring plungers 2214 that can be retracted and deformed. The pipe joint 2223 is detachably connected to the hose seat 2213, and the outer wall of the pipe joint 2223 is provided with an annular positioning groove 22232 that allows the spring plunger 2214 to be engaged. The barrel body 2211 and the barrel cover 2212 are detachably connected.

[0048] The barrel body 2211 and the barrel cover are connected by screwing and pressing the bolts hinged on the outside of the barrel body 2211 into the notches on the barrel cover 2212. This method is a common way to disassemble and assemble the pressure barrel 221. The pressure barrel 221 used to hold glue is a common structure in this field, so its structure will not be described in detail.

[0049] The swing assembly 4 includes a base 41 rotatably connected to the table top of the machine 1 and a driving unit A42 arranged on the machine 1 to control the base 41 to rotate around its own central axis; the top of the base 41 is provided with a swing rod 43 extending in the direction of the rotation mechanism 3, and the glue discharging assembly 21 is arranged on the swing rod 43. As shown in the figure, the outer surface of the ejector cylinder 211 is provided with a fixing unit 2113 detachably connected to the swing rod 43. The fixing unit 2113 can be a clamp with bolts, which is convenient for detaching and connecting to the swing rod 43. Of course, the fixing unit 2113 can also be some other fixing structures that can be used to fix with the swing rod 43.

[0050] The driving unit A42 may be a servo motor or other element capable of controlling the rotation of the base 41 .

[0051] A bent rod 44 with an L-shaped cross-section and arranged horizontally is fixedly provided at the bottom of the base 41. The driving unit A42 is a push cylinder 421 arranged on the machine 1, and the piston rod of the push cylinder 421 abuts against one end of the bent rod 44. The other end of the bent rod 44 is connected to the machine 1 through a spring 45. The push cylinder 421 pushes the bent rod 44 to drive the base 41 to rotate, thereby controlling the swing rod 43 to swing with the base 41.

[0052] The piston rod of the push cylinder 421 retracts, and the bent rod 44 automatically returns to its original position under the elastic force of the spring 45 , and the base 41 and the swing rod 43 return to their original position.

[0053] The spring 45 is a hooked tension spring. The bent rod 44 is provided with a through hole 441 at one end close to the hooked tension spring. One end of the hooked tension spring is hooked in the through hole 441 , and the other end of the hooked tension spring is connected to the machine 1 .

[0054] There are a plurality of through holes 441, which are spaced apart along the extending direction of the curved rod 44. The provision of a plurality of through holes 441 facilitates adjusting the rotation degree of the curved rod 44 according to actual needs, thereby controlling the rotation degree of the base 41 and the swing rod 43.

[0055] The push cylinder 421 is fixed on a rack 422 , and the push cylinder 421 is connected to the machine platform 1 through the rack 422 fixed on the machine platform 1 .

[0056] It also includes a glue coating disc 5 which is rotatably arranged in front of the glue output end of the glue discharging mechanism 2 and is used for transferring glue. The glue output from the glue output end is coated on the edge of the glue coating disc 5 .

[0057] like Fig.14As shown, the glue coating disc 5 is rotatably connected to the front end of the swing rod 43, and the glue coating disc 5 is located in front of the glue outlet nozzle 2123 of the glue outlet assembly 21. The glue coating disc 5 makes the glue applied on the leather piece more uniform. In addition, the edge of the glue coating disc 5 is in contact with the edge of the leather piece located on the rotation mechanism 3, so that the glue coating disc 5 fits the edge of the leather piece and rotates synchronously with the rotation of the leather piece. Under the action of the spring 45 and the swing rod 43, during the rotation of the glue coating disc 5, the edge of the leather piece that is adapted to rotate swings to different degrees, so as to achieve efficient coating of leather pieces of various shapes and specifications.

[0058] The rubber coating plate 5 is attached to the rotating leather piece and rotates with it. For example, if the leather piece is a polygonal leather piece used to make a football, and the edge of the polygonal leather piece has an angle, the arrangement of the spring 45 can play a buffering role, so that the angle of the polygonal leather piece can smoothly transition and fit when it contacts the rubber coating plate 5. In addition, the arrangement of the spring 45 can also make the rubber coating plate 5 adapt to leather pieces of different sizes, so that the rubber coating plate 5 and the rotating leather piece are always as close as possible.

[0059] The self-rotation mechanism 3 includes a rotating assembly 31 and a positioning assembly 32 located above the rotating assembly 31;

[0060] The rotating assembly 31 includes a plurality of rotating seats 311 rotatably connected to the machine 1 and used to place the leather pieces, and a driving unit B312 disposed on the machine 1 and connected to the rotating seats 311 to control the rotating seats 311 to rotate around their own central axis;

[0061] The positioning assembly 32 includes a positioning frame 321 installed on the machine 1 and located above the rotating assembly 31. The positioning frame 321 is provided with a one-way cylinder 322 that can be telescoped up and down above the rotating seat 311. The end of the piston rod of the one-way cylinder 322 is rotatably connected to a limiter 323 for pressing the leather piece.

[0062] The limiting member 323 includes a connecting rod 3231 whose upper end is connected to the piston rod of the one-way cylinder 322 and a pressing portion 3232 rotatably connected to the lower end of the connecting rod. The pressing portion 3232 is a trumpet-shaped structure that is small at the top and large at the bottom.

[0063] A compression spring 3233 is provided at the center of the pressing portion to assist it in pressing the leather sheet downward.

[0064] The driving unit B312 includes a motor 3121 disposed below the machine 1 and a plurality of connecting columns 3122 correspondingly connected to the rotating seat 311; a pulley 3123 is disposed on the rotating shaft of the motor 3121 and on the periphery of the connecting columns 3122, and a transmission belt 3124 is sleeved on the periphery of the pulley 3123. The motor 3121 drives the connecting columns 3122 to rotate synchronously through the transmission belt 3124, thereby controlling the rotation of the rotating seat 311;

[0065] A top cover 313 for supporting the leather piece is provided above the rotating seat 311. The top cover 313 has various specifications, and the operator can replace the top covers 313 of different sizes and shapes according to specific production. The top cover 313 can be selected to be circular, regular polygonal, or other shapes consistent with the specifications and sizes of the leather piece to be coated with glue. The purpose is to make the top cover 313 better support the leather piece to avoid affecting the gluing effect.

[0066] The top cover 313 is made of metal, and the upper end surface of the rotating seat 311 is provided with a plurality of magnetic suction parts 3111 for sucking the top cover 313 , so as to realize fast replacement of different top covers 313 .

[0067] The machine 1 is also provided with a start-stop button electrically connected to the control drive unit A42, the drive unit B312 and the one-way cylinder 322. The setting of the start-stop button facilitates the operator to control the production process.

[0068] The usage of the utility model is roughly as follows:

[0069] First, the leather piece to be coated with glue is placed on the rotating seat 311 of the rotating mechanism 3 manually or by a feeding machine. The one-way cylinder 322 of the rotating mechanism 3 controls the pressing part 3232 to move downward to press the leather piece. Then the glue supply component 22 starts to work, and the glue is transported from the pressure barrel 221 to the glue outlet head 212 through the glue delivery pipeline 222. At the same time, the driving unit B312 is started to drive the rotating seat 311 and the leather piece to start rotating. At this time, the driving unit A42 of the swinging component 4 starts to work, pushing the bending rod 44 to drive the base 41 to rotate, and then the swinging rod 43 drives the glue outlet component 21 and the glue coating disk 5 to swing to a position close to the rotating mechanism 3.

[0070] At this time, the ejector pin of the ejector pin cylinder 211 is pulled out from the glue outlet channel 2121, thereby clearing the glue injection hole 2122 and the glue outlet nozzle 2123, so that the glue flows out and is coated on the edge of the glue coating plate 5. Then, the edge of the glue coating plate 5 rotates with the rotation of the leather piece, so that the glue is evenly coated around the leather piece, and the leather piece is coated with glue once.

[0071] When the glue coating of the leather piece is completed, the ejector cylinder 211 works again, pushing the ejector into the glue outlet channel 2121, closing the glue injection hole 2122 and the glue outlet nozzle 2123, and stopping the glue from flowing out. At the same time, the swing component 4 swings the glue outlet component 21 and the glue coating disc 5 out of the position of the rotating mechanism 3, and prepares to approach the rotating mechanism 3 for the next glue coating operation.

[0072] After each gluing is completed, the one-way cylinder 322 controls the pressing part 3232 to leave the leather piece, and the glued leather piece is collected manually or by a feeding mechanism or automatically sent to the next production link. Subsequently, the leather piece to be glued is continuously placed on the rotating seat 311 of the rotating mechanism 3 by manual or mechanical devices, thereby realizing continuous and efficient gluing operation.

[0073] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A leather gluing machine, characterized in that: It comprises a machine (1), a plurality of glue discharging mechanisms (2) arranged on the machine (1), and a plurality of self-rotating mechanisms (3) correspondingly arranged at the glue output ends of the glue discharging mechanisms (2); the self-rotating mechanisms (3) are used to carry leather pieces and drive the leather pieces to rotate, and the glue flows out through the glue output ends of the glue discharging mechanisms (2) and is coated around the self-rotating leather pieces.

2. The leather piece gluing machine according to claim 1, characterized in that: It also includes a swing component (4) arranged on the machine platform (1); the glue discharging mechanism (2) includes a glue discharging component (21) for outputting glue, the glue discharging component (21) is connected to the swing component (4), and the swing component (4) controls the glue output end of the glue discharging component (21) to approach or move away from the rotation mechanism (3).

3. The leather piece gluing machine according to claim 1, characterized in that: The glue discharging mechanism (2) comprises a glue discharging component (21) for discharging glue and a glue supply component (22) connected to the glue discharging component (21) and supplying glue to the glue discharging component (21); the glue discharging component (21) comprises an ejector cylinder (211) and a glue discharging head (212) detachably connected to the front end of the ejector cylinder (211); The glue outlet head (212) is provided with a glue outlet channel (2121) running through the front and rear ends thereof; a glue injection hole (2122) communicating with the glue supply assembly (22) and the glue outlet channel (2121) is provided on a side wall of the glue outlet head (212); a glue outlet nozzle (2123) communicating with the glue outlet channel (2121) is provided at the front end of the glue outlet head (212); a positioning sleeve (2124) communicating with the glue outlet channel (2121) is provided at the rear end of the glue outlet head (212); the ejector cylinder (211) reciprocates and pushes an ejector into the glue outlet channel (2121) via the positioning sleeve (2124) to control the ejector to block or clear the glue injection hole (2122) and the glue outlet nozzle (2123); and glue flows out through the glue outlet nozzle (2123) and is coated around the self-rotating leather piece.

4. The leather piece gluing machine according to claim 3, characterized in that: The rear end surface of the glue dispensing head (212) is provided with a plurality of fixing columns (2125), and the outer wall of the fixing columns (2125) is provided with an annular groove (2126). The front end of the ejector cylinder (211) is provided with a plurality of sleeves (2111) into which the fixing columns (2125) can be inserted, and the sleeve (2111) is provided with abutting pieces (2112) for abutting against the annular groove (2126), so as to realize the disassembly and assembly connection between the glue dispensing head (212) and the ejector cylinder (211).

5. The leather piece gluing machine according to claim 4, characterized in that: The sleeve (2111) is provided with a screw hole, and the abutment member (2112) is a bolt screwed into the sleeve (2111) through the screw hole. The fixing column (2125) is inserted into the sleeve (2111), and the end of the bolt is screwed into the sleeve (2111) through the screw hole and abuts against the annular groove (2126) of the fixing column (2125) to achieve the detachable connection between the fixing column (2125) and the sleeve (2111).

6. The leather piece gluing machine according to claim 3, characterized in that: The glue supply assembly (22) comprises a pressure barrel (221) for containing glue and a glue delivery pipeline (222) inserted into the pressure barrel (221) and connected to the glue injection hole (2122).

7. The leather piece gluing machine according to claim 2, characterized in that: The swing assembly (4) comprises a base (41) rotatably connected to the table top of the machine (1) and a driving unit A (42) arranged on the machine (1) and controlling the base (41) to rotate around its own central axis; a swing rod (43) extending in the direction of the rotation mechanism (3) is arranged on the top of the base (41), and the glue discharge assembly (21) is arranged on the swing rod (43).

8. The leather piece gluing machine according to claim 7, characterized in that: A bent rod (44) having an L-shaped cross section and arranged horizontally is fixedly provided at the bottom of the base (41); the driving unit A (42) is a push cylinder (421) arranged on the machine (1); the piston rod of the push cylinder (421) abuts against one end of the bent rod (44); the other end of the bent rod (44) is connected to the machine (1) via a spring (45); the push cylinder (421) pushes the bent rod (44) to drive the base (41) to rotate, thereby controlling the swing rod (43) to swing along with the base (41).

9. The leather piece gluing machine according to claim 1, characterized in that: It also includes a glue coating disc (5) which is rotatably arranged in front of the glue output end of the glue discharging mechanism (2) and is used to transfer glue. The glue output from the glue output end is coated on the edge of the glue coating disc (5), and the edge of the glue coating disc (5) is in contact with the edge of the leather piece located on the rotation mechanism (3).

10. The leather piece gluing machine according to claim 1, characterized in that: The self-rotating mechanism (3) comprises a rotating assembly (31) and a positioning assembly (32) located above the rotating assembly (31); The rotating assembly (31) comprises a plurality of rotating seats (311) rotatably connected to the machine (1) and used for placing leather pieces, and a driving unit B (312) disposed on the machine (1) and connected to the rotating seats (311) to control the rotating seats (311) to rotate around their own central axis; The positioning assembly (32) comprises a positioning frame (321) mounted on the machine platform (1) and located above the rotating assembly (31); the positioning frame (321) is provided with a one-way cylinder (322) that can be telescoped up and down at a position above the rotating seat (311); the piston rod end of the one-way cylinder (322) is rotatably connected to a limiting member (323) for pressing the leather piece.

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