Footwear vamp gluing machine and gluing process

Abstract

This application relates to a gluing machine and process for footwear athletic shoes. The gluing machine includes a transport frame, a spray gun tube, and a sealing element. A nozzle is slidably connected inside the spray gun tube, and an air inlet pipe is connected to the outer wall of the spray gun tube. An air pump is located at the end of the air inlet pipe away from the spray gun tube. An elastic element is provided between the sealing element and the nozzle. The elastic element has elastic potential energy to push the nozzle towards the air inlet pipe. When the air pump is turned off, the nozzle can move away from the sealing element under the action of the elastic element. The sealing element includes a rubber stopper. A sealing hole is opened on the outer wall of one end of the rubber stopper. The glue outlet end of the nozzle is slidably connected to the rubber stopper through the sealing hole. After the gluing of the shoe upper is completed, the nozzle moves away from the rubber stopper under the action of the elastic element until the glue outlet end of the nozzle retracts into the rubber stopper through the sealing hole. The inner wall of the sealing hole wraps around the glue outlet end of the nozzle, thereby reducing the risk of residual glue at the nozzle outlet end hardening upon contact with air, leading to nozzle clogging.

Description

Technical Field

[0001] This application relates to the field of shoemaking equipment, and in particular to a gluing machine and gluing process for the upper of footwear sports shoes. Background Technology

[0002] A shoe upper gluing machine is a piece of equipment specifically used in footwear production to coat the surface of shoes with glue or adhesive.

[0003] There is a shoe upper glue spraying device in the prior art, which includes a conveyor and a robot arm located on one side of the conveyor. One end of the robot arm is fixed with a glue gun for spraying glue material onto the shoe upper. When applying glue to the shoe upper, the robot arm is activated so that the robot arm drives the spray gun toward the part of the shoe upper that needs to be glued, and then the spray gun is activated to apply glue to the shoe upper.

[0004] Regarding the aforementioned technologies, adhesive residue may remain at the nozzle of the glue gun, and this residue may harden and clog the nozzle. Summary of the Invention

[0005] To reduce the risk of nozzle clogging, this application provides a glue-coating machine and process for footwear sports shoes.

[0006] The technical solution provided in this application for a footwear adhesive bonding machine for protective sports shoes is as follows:

[0007] A footwear adhesive bonding machine for athletic shoes, comprising:

[0008] Transport rack, the transport rack being used to transport shoe uppers;

[0009] The spray gun tube has a nozzle for spraying glue onto the shoe surface that is slidably connected inside. An air inlet pipe that communicates with the inside of the spray gun tube is connected to the outer wall of the spray gun tube so that the nozzle can be moved by the air pressure provided by the air inlet pipe. An air pump is provided at the end of the air inlet pipe away from the spray gun tube.

[0010] A sealing element is located at the end of the nozzle opposite to the air inlet pipe. An elastic element is provided between the sealing element and the nozzle. The elastic element has elastic potential energy to push the nozzle towards the air inlet pipe. When the air pump is turned off, the nozzle can move away from the sealing element under the action of the elastic element. The sealing element includes a rubber plug. A sealing hole is opened on the outer wall of one end of the rubber plug, which penetrates its own side wall. The dispensing end of the nozzle is slidably connected to the rubber plug through the sealing hole.

[0011] A robotic arm is located on one side of the transport frame, with one end of the robotic arm connected to the spray gun pipe.

[0012] By adopting the above technical solution, when applying glue to the shoe upper, the shoe upper is fixed above the transport frame. Next, the robotic arm is activated, moving the spray gun tube. When the nozzle is aimed at the area of ​​the shoe upper that needs glue, the robotic arm stops. Then, the air pump is turned on, supplying gas into the spray gun tube through the air inlet pipe. The nozzle then moves closer to the rubber stopper under air pressure until the glue-dispensing end of the nozzle extends out of the rubber stopper through the sealing hole. The nozzle then starts spraying glue onto the shoe upper. After the glue application is complete, the air pump is turned off, and the nozzle moves away from the rubber stopper under the action of the elastic element until the glue-dispensing end retracts into the rubber stopper through the sealing hole. Because the rubber stopper has a certain degree of elasticity, the inner wall of the sealing hole wraps around the glue-dispensing end of the nozzle, thereby reducing the risk of residual glue hardening upon contact with air and causing nozzle clogging.

[0013] Optionally, the nozzle includes a nozzle body, an adhesive cavity is provided inside the nozzle body, an adhesive inlet pipe is provided outside the nozzle body and the adhesive inlet pipe is connected to the adhesive cavity, an adhesive pump is connected to one end of the adhesive inlet pipe away from the nozzle body, and a spray needle is provided at one end of the nozzle body away from the air inlet pipe, the spray needle being slidably connected to a rubber plug through a sealing hole.

[0014] By adopting the above technical solution, after the air pump is started, the gas is delivered to the spray gun tube through the air inlet pipe. Then, the nozzle gradually approaches the rubber stopper under the action of air pressure until the spray needle passes through the sealing hole. Next, the glue pump is started to spray the adhesive material onto the shoe surface.

[0015] Optionally, the spray gun tube is further provided with a valve needle, and the end of the nozzle body opposite to the spray needle is provided with a through hole. The spray needle is slidably connected to the nozzle body through the through hole, and the outer wall of the valve needle abuts against the inner wall of the spray needle.

[0016] By adopting the above technical solution, after the air pump is started, the nozzle moves closer to the rubber stopper under the action of air pressure, and then the valve needle separates from the spray needle, so that the adhesive material can be sprayed onto the surface of the shoe through the spray needle; after the air pump is turned off, the nozzle moves away from the rubber stopper under the action of the elastic element, and then the valve needle abuts against the spray needle, thereby reducing the risk of adhesive material overflow.

[0017] Optionally, the outer wall of the air intake pipe is also connected to an air intake branch pipe that communicates with the air intake pipe. One end of the air intake branch pipe that is away from the air intake pipe is connected to the nozzle, and the air intake branch pipe communicates with the inside of the nozzle. A three-way valve is provided on the air intake pipe, and the other outlet pipe of the three-way valve is connected to the air intake branch pipe.

[0018] By adopting the above technical solution, after starting the air pump, the inside of the spray gun tube is connected to the inside of the air pump through a three-way valve. Gas is delivered to the spray gun tube through the air inlet pipe. At this time, the nozzle body gradually approaches the rubber stopper under air pressure until the spray needle passes through the sealing hole and the rubber stopper. Next, the glue pump is started to deliver the adhesive material into the glue chamber, and the air inlet branch pipe is connected to the inside of the air pump through the three-way valve. At the glue outlet of the nozzle, the gas and the adhesive material are mixed, atomized into tiny droplets through the small hole of the spray needle, and mixed with air to form a jet stream, which is finally coated on the shoe surface.

[0019] Optionally, a baffle is provided between the seal and the nozzle, and the baffle is connected to the inner wall of the spray gun tube.

[0020] By adopting the above technical solution, when the nozzle approaches the rubber stop under air pressure, the baffle plays a limiting role, thereby reducing the risk that the seal will fall off from one end of the spray gun tube due to the action of the nozzle when the air pressure is too high.

[0021] Optionally, the sealing element includes a sealing plate, one end of which has an outer wall with a mounting hole communicating with the other end of the sealing plate, and the rubber plug is mounted on the sealing plate through the mounting hole.

[0022] By adopting the above technical solution, when the nozzle dispensing end moves inside the rubber stopper, the rubber stopper is fixed by the sealing plate.

[0023] Optionally, the rubber stopper is a frustum-shaped tube with a central cross-sectional dimension larger than the cross-sectional dimensions at both ends, and the mounting hole matches the shape of the rubber stopper.

[0024] By adopting the above technical solution, when the nozzle dispensing end moves inside the rubber stopper, the side wall of the shuttle-shaped frustum rubber stopper contacts the inner wall of the mounting hole. This can limit the movement range of the rubber stopper and reduce the possibility of the rubber stopper falling off.

[0025] Optionally, the sealing plate includes a first sealing plate, the side wall of which is connected to the inner wall of the spray gun tube, and a second sealing plate connected to the side of the first sealing plate away from the nozzle. The maximum cross-sectional size of the mounting hole is located at the connection between the first sealing plate and the second sealing plate, and the second sealing plate is engaged with the spray gun tube.

[0026] By adopting the above technical solution, when the rubber stopper is used for a long time, the elasticity of the rubber stopper will decrease, which will weaken the sealing effect of the sealing hole on the glue outlet end of the nozzle. At this time, the second sealing plate is removed and the rubber stopper is replaced, thereby reducing the risk that the residual glue at the glue outlet end of the nozzle will harden due to contact with air because of the weakened sealing effect of the sealing hole on the glue outlet end of the nozzle.

[0027] Optionally, the rubber stopper is made of fluororubber.

[0028] By adopting the above technical solutions, fluororubber, as a high-performance rubber material, possesses excellent oil resistance, heat resistance, and chemical corrosion resistance. Its unique properties enable it to effectively resist the erosion of various chemicals, including various adhesives. Using fluororubber as the material for rubber stoppers helps to extend the service life of the stoppers to a certain extent.

[0029] The technical solution provided in this application for a gluing process on the upper of foot-protecting sports shoes is as follows:

[0030] A coating process for the upper of foot-protecting athletic shoes includes the following steps:

[0031] S1. Secure the shoe upper above the transport frame;

[0032] S2. Activate the robotic arm to move the spray gun tube. When the spray nozzle is directed toward the area of ​​the shoe surface that needs to be coated with glue, the robotic arm stops moving.

[0033] S3. Turn on the air pump. Under the action of the air pump, the nozzle moves towards the rubber stop. Then the glue outlet of the nozzle extends out of the rubber stop and sprays glue onto the shoe surface.

[0034] S4. After the adhesive is applied, the air pump is turned off. The nozzle moves away from the rubber stopper under the action of the elastic element, so that the adhesive outlet end of the nozzle retracts into the rubber stopper through the sealing hole.

[0035] In summary, this application includes at least one of the following beneficial technical effects:

[0036] 1. After applying glue to the shoe upper, turn off the air pump. The air pressure on the side of the nozzle away from the rubber stopper decreases. Then, under the action of the elastic element, the nozzle moves away from the rubber stopper until the glue outlet end of the nozzle retracts into the rubber stopper through the sealing hole. Because the rubber stopper has a certain elasticity, the inner wall of the sealing hole wraps around the glue outlet end of the nozzle, thereby reducing the risk of residual glue at the glue outlet end of the nozzle hardening upon contact with air, which could lead to nozzle blockage.

[0037] 2. After the air pump is started, the air is delivered to the spray gun tube through the air inlet pipe. Then, the nozzle gradually approaches the rubber stopper under the action of air pressure until the spray needle passes through the sealing hole. Next, the glue pump is started to spray the adhesive material onto the shoe surface.

[0038] 3. After the air pump is started, the nozzle moves closer to the rubber stopper under air pressure. Then the valve needle disengages from the spray needle, allowing the adhesive material to be sprayed onto the shoe surface through the spray needle. After the air pump is turned off, the nozzle moves away from the rubber stopper under the action of the elastic element. Then the valve needle comes into contact with the spray needle, thereby reducing the risk of adhesive material spillage. Attached Figure Description

[0039] Figure 1This is a schematic diagram of the overall structure of an embodiment of this application;

[0040] Figure 2 yes Figure 1 A magnified view of part A in the middle;

[0041] Figure 3 This is a cross-sectional view of the spray gun tube in an embodiment of this application;

[0042] In the diagram: 1. Transport frame; 11. Positioning sleeve; 2. Shoe upper; 3. Spray gun tube; 31. Air inlet pipe; 311. Three-way valve; 32. Air pump; 33. Air inlet branch pipe; 34. Baffle; 4. Nozzle; 41. Nozzle body; 42. Glue cavity; 43. Spray needle; 44. Glue inlet pipe; 45. Glue pump; 46. Through hole; 5. Elastic element; 6. Sealing element; 61. Rubber plug; 62. Sealing hole; 63. Sealing plate; 631. First sealing plate; 632. Second sealing plate; 64. Mounting hole; 7. Robotic arm; 8. Valve needle. Detailed Implementation

[0043] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0044] This application discloses a glue-coating machine for the upper of foot-protecting sports shoes. (Refer to...) Figure 1 and Figure 2 A shoe upper gluing machine for foot protection sports shoes includes a transport frame 1 for transporting shoe uppers 2, and a positioning sleeve 11 for fixing shoe uppers 2 is provided on the top of the transport frame 1. A robotic arm 7 is provided on one side of the transport frame 1, and a spray gun pipe 3 is connected to one end of the robotic arm 7.

[0045] Reference Figure 1 and Figure 3 The spray gun tube 3 has a nozzle 4 slidably connected inside for spraying adhesive material onto the shoe surface 2. An air inlet pipe 31, communicating with the inside of the spray gun tube 3, is connected to the outer wall of the spray gun tube 3. An air pump 32 is installed at the end of the air inlet pipe 31 facing away from the spray gun tube 3. An air inlet branch pipe 33, communicating with the air inlet pipe 31, is also connected to the outer wall of the air inlet pipe 31. The air inlet branch pipe 33 has a certain degree of elasticity, and its end facing away from the air inlet pipe 31 is connected to the nozzle 4, communicating with the inside of the nozzle 4. A three-way valve 311 is installed on the air inlet pipe 31, and the other outlet pipe of the three-way valve 311 is connected to the air inlet branch pipe 33.

[0046] The nozzle 4 has a sealing element 6 at the end away from the air inlet pipe 31, and the sealing element 6 is connected to the inner wall of the spray gun pipe 3. An elastic element 5 is provided between the sealing element 6 and the nozzle 4. In this embodiment, the elastic element 5 is multiple springs. One end of the spring is connected to the sealing element 6, and the end of the spring away from the sealing element 6 is connected to the nozzle 4. The sealing element 6 includes a rubber plug 61. A sealing hole 62 is opened on the outer wall of one end of the rubber plug 61, which penetrates its own side wall. The dispensing end of the nozzle 4 is slidably connected to the rubber plug 61 through the sealing hole 62.

[0047] When applying adhesive to the shoe upper 2, the shoe upper 2 is fixed above the transport frame 1 by the positioning sleeve 11. Then, the robot arm 7 is started, and the robot arm 7 moves the spray gun tube 3. When the nozzle 4 is facing the part of the shoe upper 2 that needs to be glued, the robot arm 7 stops moving. Then, the air pump 32 is turned on, and the internal of the air pump 32 is connected to the internal of the spray gun tube 3 through the three-way valve 311. The air pump 32 delivers gas to the internal of the spray gun tube 3 through the air inlet pipe 31. Then, the nozzle 4 approaches the rubber stopper 61 under the action of air pressure until the glue outlet end of the nozzle 4 extends out of the rubber stopper 61 through the sealing hole 62. Then, the nozzle 4 is started, spraying material onto the shoe upper 2 to apply adhesive. At the same time, the internal of the air pump 32 is connected to the internal of the nozzle 4 through the three-way valve 311. The gas and the adhesive material are mixed at the glue outlet end of the nozzle 4 to form a jet stream to apply adhesive to the shoe upper 2.

[0048] After applying glue to the shoe upper 2, the air pump 32 is turned off, and the inside of the spray gun tube 3 is connected to the inside of the nozzle 4 through the three-way valve 311. The air pressure inside the spray gun tube 3 begins to decrease, and the pressure inside the nozzle 4 begins to increase. Then, the nozzle 4 moves away from the rubber stopper 61 under the action of the spring. The gas in the spray gun tube 3 flows into the nozzle 4 until the glue outlet end of the nozzle 4 retracts into the rubber stopper 61 through the sealing hole 62. Since the rubber stopper 61 has a certain elasticity, the inner wall of the sealing hole 62 wraps around the glue outlet end of the nozzle 4, thereby reducing the risk of residual glue at the glue outlet end of the nozzle 4 hardening due to contact with air, which could lead to clogging of the nozzle 4.

[0049] Reference Figure 3 The nozzle 4 includes a nozzle body 41, with a glue cavity 42 inside the nozzle body 41. A glue inlet pipe 44 is provided outside the nozzle body 41 and is connected to the glue cavity 42. A glue pump 45 is connected to one end of the glue inlet pipe 44 away from the nozzle body 41. The glue pump 45 is connected to a glue storage tank (not shown in the figure). A spray needle 43 is provided at one end of the nozzle body 41 away from the air inlet pipe 31. The spray needle 43 is slidably connected to the rubber plug 61 through a sealing hole 62.

[0050] After the air pump 32 is started, it delivers gas into the spray gun tube 3 through the air inlet pipe 31. Then, the nozzle body 41 moves closer to the rubber stopper 61 under the action of air pressure until the spray needle 43 extends out of the rubber stopper 61 through the sealing hole 62. Then, the glue pump 45 is started to transport the adhesive material into the glue chamber 42. The gas and the adhesive material are mixed at the glue outlet of the nozzle 4. The adhesive material is atomized into small droplets through the small hole of the spray needle 43 and mixed with the air to form a jet stream, thereby applying glue to the shoe surface 2.

[0051] Reference Figure 3 The spray gun tube 3 is also equipped with a valve needle 8. The nozzle body 41 has a through hole 46 at the end away from the spray needle 43. The spray needle 43 is slidably connected to the nozzle body 41 through the through hole 46. The outer wall of the valve needle 8 abuts against the inner wall of the spray needle 43. After the air pump 32 is started, the nozzle 4 moves closer to the rubber stopper 61 under the action of air pressure. Then the valve needle 8 disengages from the spray needle 43, so that the adhesive material can be sprayed onto the surface of the shoe upper 2 through the spray needle 43. After the air pump 32 is turned off, the nozzle 4 moves away from the rubber stopper 61 under the action of the elastic element 5. Then the valve needle 8 abuts against the spray needle 43, thereby reducing the risk of adhesive material overflow.

[0052] Reference Figure 3 The rubber stopper 61 is made of fluororubber. Fluororubber is a high-performance rubber material with excellent oil resistance, heat resistance and chemical corrosion resistance. It can resist the erosion of a variety of chemicals, including various types of adhesives. Making the rubber stopper 61 made of fluororubber can extend the service life of the rubber stopper 61 to a certain extent.

[0053] Reference Figure 3 The sealing element 6 includes a sealing plate 63. One end of the outer wall of the sealing plate 63 has a mounting hole 64 that connects to the other end of the sealing plate 63. The rubber plug 61 is mounted on the sealing plate 63 through the mounting hole 64. The rubber plug 61 is a frustum-shaped tube with a central cross-sectional dimension larger than the cross-sectional dimensions at both ends. The mounting hole 64 matches the shape of the rubber plug 61. When the dispensing end of the nozzle 4 moves inside the rubber plug 61, the side wall of the rubber plug 61 abuts against the inner wall of the mounting hole 64, thereby limiting the rubber plug 61 and reducing the risk of the rubber plug 61 falling off.

[0054] Reference Figure 3 The sealing plate 63 includes a first sealing plate 631, the side wall of which is connected to the inner wall of the spray gun tube 3. A second sealing plate 632 is connected to the side of the first sealing plate 631 away from the nozzle 4. The maximum cross-sectional size of the mounting hole 64 is located at the connection between the first sealing plate 631 and the second sealing plate 632. The second sealing plate 632 is threadedly connected to the spray gun tube 3. A baffle 34 is provided between the sealing element 6 and the nozzle 4. The baffle 34 is connected to the inner wall of the spray gun tube 3.

[0055] When the nozzle 4 approaches the rubber stopper 61 under air pressure, the baffle 34 limits the nozzle 4, thereby reducing the risk that the seal 6 may detach from one end of the spray gun tube 3 under the action of the nozzle 4 when the air pressure is too high. In addition, after the rubber stopper 61 has been used for a long time, the elasticity of the rubber stopper 61 will decrease, which will weaken the wrapping effect of the sealing hole 62 on the glue outlet end of the nozzle 4. At this time, the second sealing plate 632 is removed and the rubber stopper 61 is replaced, thereby reducing the risk that the residual glue at the glue outlet end of the nozzle 4 will harden due to contact with air because of the weakened wrapping effect of the sealing hole 62 on the glue outlet end of the nozzle 4.

[0056] The implementation principle of a glue applicator for the upper 2 of a footwear sports shoe according to an embodiment of this application is as follows: When applying glue to the upper 2, the upper 2 is fixed above the transport frame 1. Next, the robotic arm 7 is activated, moving the spray gun tube 3. When the nozzle 4 is directed towards the area of ​​the upper 2 requiring glue application, the robotic arm 7 stops. Then, the air pump 32 is turned on, supplying gas into the spray gun tube 3 through the air inlet pipe 31. Subsequently, the nozzle 4 approaches the rubber stopper 61 under air pressure until the glue outlet end of the nozzle 4 extends out of the rubber stopper 61 through the sealing hole 62. Then, the nozzle 4 is activated, and gas enters the nozzle 4 through the air inlet branch pipe 33. Simultaneously, the glue material enters the nozzle 4 through the glue inlet pipe 44. The adhesive material and the spray nozzle 4 undergo gas-liquid mixing at the nozzle outlet. The adhesive material is atomized into small droplets through the small hole of the spray needle 43 and mixes with the air to form a jet stream, thereby applying adhesive to the shoe upper 2. After the adhesive is applied to the shoe upper 2, the air pump 32 is turned off, and the air pressure on the side of the nozzle 4 away from the rubber stopper 61 decreases. Then, under the action of the elastic element 5, the nozzle 4 moves away from the rubber stopper 61 until the nozzle outlet retracts into the rubber stopper 61 through the sealing hole 62. Since the rubber stopper 61 has a certain elasticity, the inner wall of the sealing hole 62 wraps around the nozzle outlet, thereby reducing the risk of residual adhesive at the nozzle outlet hardening upon contact with air, which could lead to nozzle 4 clogging.

[0057] This application also discloses a coating process for the upper of foot-protecting athletic shoes. (Refer to...) Figure 1 and Figure 3 A process for applying adhesive to the upper of a foot-protecting athletic shoe includes the following steps:

[0058] S1. Secure the shoe upper 2 above the transport frame 1;

[0059] S2. Start the robotic arm 7, which moves the spray gun 3. When the nozzle 4 is facing the part of the shoe surface 2 that needs to be coated with glue, the robotic arm 7 stops moving.

[0060] S3. Turn on the air pump 32. Under the action of the air pump 32, the nozzle 4 moves towards the rubber stopper 61. Then the glue outlet end of the nozzle 4 extends out of the rubber stopper 61 to spray glue onto the shoe surface 2.

[0061] S4. After the adhesive is applied, turn off the air pump 32. Under the action of the elastic element 5, the nozzle 4 moves away from the rubber stopper 61, so that the adhesive outlet end of the nozzle 4 retracts into the rubber stopper 61 through the sealing hole 62.

[0062] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A shoe upper gluing machine for foot-protecting sports shoes, characterized in that, include: Transport rack (1), the transport rack (1) is used to transport shoe uppers (2); A spray gun tube (3) is slidably connected inside the spray gun tube (3) to a nozzle (4) for spraying glue onto the shoe surface (2). An air inlet pipe (31) connected to the outer wall of the spray gun tube (3) is connected to the inside of the spray gun tube (3) so that the nozzle (4) can be moved by the air pressure provided by the air inlet pipe (31). An air pump (32) is provided at one end of the air inlet pipe (31) away from the spray gun tube (3). An air inlet branch pipe (33) connected to the outer wall of the air inlet pipe (31) is also connected to the air inlet pipe (31). One end of the air inlet branch pipe (33) away from the air inlet pipe (31) is connected to the nozzle (4). The air inlet branch pipe (33) is connected to the inside of the nozzle (4). A three-way valve (311) is provided on the air inlet pipe (31). The other outlet pipe of the three-way valve (311) is connected to the air inlet branch pipe (33). A sealing element (6) is located at the end of the nozzle (4) away from the air inlet pipe (31). An elastic element (5) is provided between the sealing element (6) and the nozzle (4). The elastic element (5) has elastic potential energy to push the nozzle (4) toward the air inlet pipe (31). When the air pump (32) is turned off, the nozzle (4) can move away from the sealing element (6) under the action of the elastic element (5). The sealing element (6) includes a rubber plug (61). One end of the rubber plug (61) is provided with a sealing hole (62) that penetrates its own side wall. The nozzle (4) dispensing end is slidably connected to the rubber plug (61) through the sealing hole (62). The robotic arm (7) is located on one side of the transport frame (1) and one end of the robotic arm (7) is connected to the spray gun pipe (3); The nozzle (4) includes a nozzle body (41), which has a glue cavity (42) inside. The nozzle body (41) has a glue inlet pipe (44) outside and the glue inlet pipe (44) is connected to the glue cavity (42). The glue pump (45) is connected to one end of the glue inlet pipe (44) away from the nozzle body (41). The nozzle needle (43) is provided at one end of the nozzle body (41) away from the air inlet pipe (31). The nozzle needle (43) is slidably connected to the rubber plug (61) through the sealing hole (62). The spray gun tube (3) also has a valve needle (8) inside. The nozzle body (41) has a through hole (46) at one end away from the nozzle needle (43). The nozzle needle (43) is slidably connected to the nozzle body (41) through the through hole (46). The outer wall of the valve needle (8) abuts against the inner wall of the nozzle needle (43).

2. The shoe upper gluing machine for foot-protecting sports shoes according to claim 1, characterized in that: A baffle (34) is provided between the seal (6) and the nozzle (4), and the baffle (34) is connected to the inner wall of the spray gun pipe (3).

3. The shoe upper gluing machine for foot-protecting sports shoes according to claim 1, characterized in that: The sealing element (6) includes a sealing plate (63), and an installation hole (64) is provided on the outer wall of one end of the sealing plate (63) to connect the other end of the sealing plate (63). The rubber plug (61) is installed on the sealing plate (63) through the installation hole (64).

4. The shoe upper gluing machine for foot-protecting sports shoes according to claim 3, characterized in that: The rubber plug (61) is a frustum-shaped tube with a central cross-sectional dimension larger than the cross-sectional dimensions at both ends, and the mounting hole (64) matches the shape of the rubber plug (61).

5. The shoe upper gluing machine for foot-protecting sports shoes according to claim 4, characterized in that: The sealing plate (63) includes a first sealing plate (631), the side wall of the first sealing plate (631) is connected to the inner wall of the spray gun tube (3), and a second sealing plate (632) is connected to the side of the first sealing plate (631) away from the nozzle (4). The maximum cross-sectional size of the mounting hole (64) is located at the connection between the first sealing plate (631) and the second sealing plate (632), and the second sealing plate (632) is engaged with the spray gun tube (3).

6. The shoe upper gluing machine for foot-protecting sports shoes according to claim 1, characterized in that: The rubber stopper (61) is made of fluororubber.

7. A gluing process for the upper of foot-protecting sports shoes, comprising a gluing machine for the upper of foot-protecting sports shoes according to any one of claims 1-6, characterized in that, Includes the following steps: S1. Fix the shoe upper (2) above the transport frame (1); S2. Start the robotic arm (7) to move the spray gun tube (3) and when the nozzle (4) is facing the part of the shoe surface (2) that needs to be coated with glue, the robotic arm (7) stops moving; S3. Turn on the air pump (32). Under the action of the air pump (32), the nozzle (4) moves towards the rubber stopper (61). Then the glue outlet of the nozzle (4) extends out of the rubber stopper (61) to spray glue onto the shoe surface (2). S4. After the glue is applied, turn off the air pump (32). The nozzle (4) moves away from the rubber stopper (61) under the action of the elastic element (5). Then the glue outlet end of the nozzle (4) retracts into the rubber stopper (61) through the sealing hole (62).

Images