A shoe upper glue spraying shunting method

Abstract

The present application provides a kind of vamp glue spraying shunt method, belong to shoemaking field, comprising: first right vamp and first left vamp are located right glue spraying position and left glue spraying position, second right vamp is located intermediate position;Glue spraying robot sprays first right vamp, after glue spraying, posture is switched and first left vamp is sprayed, first right vamp is released, while second right vamp is transferred to right glue spraying position;After first left vamp is sprayed, glue spraying robot posture is switched and second right vamp is sprayed, first left vamp is released to intermediate position, second left vamp is transferred to left glue spraying position;After second right vamp is sprayed, glue spraying robot posture is switched and second left vamp is sprayed, second right vamp is released;Second left vamp is released after being sprayed, third right vamp is transferred to right glue spraying position, third left vamp is transferred to left glue spraying position, fourth right vamp is transmitted to intermediate position, enter next cycle.The present application can speed up glue spraying beat, and then improve production efficiency.

Description

Technical Field

[0001] The invention belongs to the field of shoemaking, and in particular relates to a shoe upper glue spraying and diversion method. Background Art

[0002] The automatic glue spraying of existing shoe production lines adopts Figure 1 The solution shown has two workstations (i.e., Station 1 and Station 2), with Station 3 serving as a standby. These two workstations do not differentiate between left and right shoe uppers, meaning both can spray glue on both sides. This causes the glue spraying robot to adjust its posture depending on whether it is working on the left or right shoe upper. This means the robot may constantly switch positions throughout the glue spraying process, preventing it from improving glue spraying efficiency.

[0003] To address this issue, the prior art proposes a method of entering the workstations separately: the left glue spray station enters the left shoe upper, and the right glue spray station enters the right shoe upper. This allows both stations to maintain the same foot shape while spraying glue, improving glue spraying efficiency. Only after the left glue spray station has finished spraying can the shoe upper in the standby station begin entering the workstation. However, the distance between the standby station and the right glue spray station is too long, which results in a longer time for the right shoe upper to enter the right glue spray station. During this time, glue spraying cannot be carried out, which still affects efficiency. Summary of the Invention

[0004] The purpose of the present invention is to propose a shoe upper glue spraying diversion method, which can reduce the time from the preparation position to the front station, thereby speeding up the glue spraying cycle and further improving production efficiency.

[0005] The present invention is achieved through the following technical solutions:

[0006] A method for diverting glue spraying on shoe uppers is disclosed. A glue spraying robot at a glue spraying station sprays glue on the shoe upper. The glue spraying station has a left glue spraying station and a right glue spraying station. A conveyor line is provided on one side of the glue spraying station, which conveys from left to right. The conveyor line has a left front station and a right front station corresponding to the left glue spraying station and the right front station, respectively. An intermediate station is provided between the left front station and the right front station. The diversion method comprises the following steps:

[0007] Step S1: The first right shoe upper is conveyed to the right front station and then transferred to the right glue spraying station; the first left shoe upper is conveyed to the left front station and then transferred to the left glue spraying station; the second right shoe upper is conveyed to the middle station;

[0008] Step S2: The glue spraying robot at the glue spraying station first sprays glue on the first right shoe upper in the right foot posture. After the glue spraying is completed, the glue spraying robot switches to the left foot posture and sprays glue on the first left shoe upper. The first right shoe upper is pushed to the right front station and released. At the same time, the second right shoe upper is transported to the right front station and transferred to the right glue spraying station.

[0009] Step S3: After the glue spraying of the first left shoe upper is completed, the glue spraying robot switches to the right foot posture to spray glue on the second right shoe upper. The first left shoe upper is pushed out to the left front station and released to the middle position. At this time, the second left shoe upper is transported to the left front station and transferred to the left glue spraying position, and then the first left shoe upper is released again;

[0010] Step S4: After the glue spraying of the second right shoe upper is completed, the glue spraying robot switches to the left foot posture to spray glue on the second left shoe upper. The second right shoe upper is pushed to the right front station and released;

[0011] Step S5: After the second left shoe upper is sprayed with glue, it is pushed to the left front station and released. The third right shoe upper is transported to the right front station and transferred to the right glue spraying position. The third left shoe upper is transported to the left front station and transferred to the left glue spraying position. The fourth right shoe upper is transferred to the middle position and enters the next cycle.

[0012] Furthermore, a left sensor and a right sensor are provided in the glue spraying station. The left sensor is located on the line between the left front station and the left glue spraying station, and the right sensor is located on the line between the right front station and the right glue spraying station. When the first right shoe upper is detected by the right sensor during the pushing process, the second right shoe upper starts to be released, and when the first right shoe upper leaves the right front station, the second right shoe upper arrives at the right front station. When the first left shoe upper is detected by the left sensor during the pushing process, the second left shoe upper starts to be released, and when the first left shoe upper leaves the left front station, the second left shoe upper arrives at the left front station.

[0013] Furthermore, the left sensor and the right sensor are respectively arranged at the midpoints of corresponding connecting lines.

[0014] Furthermore, the shoe upper is set on a shoe last, the shoe last is set on a tray, the tray is transported by the conveyor line, an induction sheet is set on the tray, and a sensor that can detect the induction sheet is set on the conveyor line, and the tray is blocked by the cooperation of the sensor and the induction sheet.

[0015] Furthermore, a chip storing information of left and right uppers is provided inside the shoe last, and a card reader for reading chip information is provided on the conveyor line, and the tray is conveyed to the left front station or the right front station according to the content read by the card reader.

[0016] The present invention is also achieved through the following technical solutions:

[0017] A method for spraying glue on a shoe upper is provided, wherein a first glue spraying station and a second glue spraying station are respectively arranged at the same positions on both sides of a conveyor line conveying from left to right, the first right glue spraying position of the first glue spraying station corresponds to the second left glue spraying position of the second glue spraying station, and the first left glue spraying position of the first glue spraying station corresponds to the second right glue spraying position of the second glue spraying station. The conveyor line is provided with a left front station workstation and a right front station workstation corresponding to the first left glue spraying position and the first right glue spraying position of the first glue spraying station, respectively. A first middle position, a second middle position and a third middle position are arranged between the left front station workstation and the right front station workstation, the first middle position is close to the right front station workstation, the third middle position is close to the left front station workstation, the second middle position is located between the first and third middle positions, and a preparatory position is arranged upstream of the left front station workstation. The diversion method comprises the following steps:

[0018] Step S1: The first right shoe upper, the first left shoe upper, and the second right shoe upper are sequentially conveyed by a conveyor line to the first middle position, the second middle position, and the third middle position, and the second left shoe upper is located at the preparation position;

[0019] Step S2: The first right shoe upper is conveyed to the right front station and transferred to the first right glue spraying position of the first glue spraying station. At the same time, the second left shoe upper is conveyed to the left front station and transferred to the first left glue spraying position of the first glue spraying station. The glue spraying robot of the first glue spraying station sprays glue on the first right shoe upper in the posture of the right foot.

[0020] Step S3: The first left shoe upper is conveyed to the right front station and transferred to the second left glue spraying position of the second glue spraying station. At the same time, the third right shoe upper is conveyed to the left front station and transferred to the second right glue spraying position of the second glue spraying station. The robot of the second glue spraying station sprays glue on the first left shoe upper in the left foot posture. At this time, the second right shoe upper is conveyed to the first middle position and blocked.

[0021] Step S4: transport the third left shoe upper to the second middle position, and the fourth right shoe upper is located in the preparation position and blocked;

[0022] Step S5: After the glue spraying of the first right shoe upper is completed, the robot of the first glue spraying station switches to the left foot posture to spray glue on the second left shoe upper. The first right shoe upper is pushed out to the right station front station and released. The second right shoe upper is conveyed to the right station front station and transferred to the first right glue spraying station of the first glue spraying station.

[0023] Step S6: After the glue spraying of the first left shoe upper is completed, the robot of the second glue spraying station switches to the right foot posture to spray glue on the third right shoe upper. The first left shoe upper is pushed out to the right station front station and released. The third left shoe upper is conveyed to the right station front station and transferred to the second left glue spraying station of the second glue spraying station.

[0024] Step S7: After the glue spraying of the second left shoe upper is completed, the robot of the first glue spraying station switches to the right foot posture to spray glue on the second right shoe upper, and the second left shoe upper is pushed to the front station of the left station and released;

[0025] Step S8: After the glue spraying of the third right shoe upper is completed, the robot of the second glue spraying station switches to the left foot posture to spray glue on the third left shoe upper. The third right shoe upper is pushed to the front station of the left station and then released.

[0026] Step S9: After the second right shoe upper is sprayed with glue, it is pushed to the right front station and released. After the third left shoe upper is sprayed with glue, it is pushed to the right front station and released.

[0027] Step S10: Release the fourth right shoe upper, the fourth left shoe upper, and the fifth right shoe upper into the first middle position, the second middle position, and the third middle position, respectively, and enter the next cycle.

[0028] Furthermore, sensors are provided on the line connecting the first left glue spraying position and the left front station of the first glue spraying station, the line connecting the first right glue spraying position and the right front station of the second glue spraying station, and the line connecting the second left glue spraying position and the right front station of the second glue spraying station, and the line connecting the second right glue spraying position and the left front station. When the shoe upper after glue spraying is sensed by the corresponding sensor during the process of being pushed out, the corresponding shoe upper to be glued starts to be released. When the shoe upper after glue spraying leaves the left front station or the right front station, the shoe upper to be glued arrives at the left front station or the right front station.

[0029] The present invention has the following beneficial effects:

[0030] 1. The present invention sets an intermediate position between the left front station and the right front station. After the first right shoe upper and the first left shoe upper enter the right spraying position and the left spraying position respectively, the second right shoe upper is conveyed to the intermediate position. This greatly shortens the time from the shoe upper being released to the front station, thereby speeding up the spraying rhythm and effectively improving production efficiency.

[0031] 2. The present invention sets a sensor to release the shoe uppers to be sprayed at the appropriate time, so that when the shoe uppers sprayed with glue leave the station, the shoe uppers to be sprayed with glue just arrive at the station, further speeding up the spraying rhythm.

[0032] 3. The present invention sets the first glue spraying station and the second glue spraying station at the same position on both sides of the conveyor line, and sets the first middle position, the second middle position and the third middle position arranged along the conveying direction between the left front station and the right front station. Through appropriate release and blocking strategies, the glue spraying rhythm is further accelerated. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention will be further described in detail below with reference to the accompanying drawings.

[0034] Figure 1 Schematic diagram of automatic glue spraying in the prior art.

[0035] Figure 2Schematic diagram of glue spraying according to embodiment 1 of the present invention.

[0036] Figure 3 This is a schematic structural diagram of a tray and a shoe last according to the first embodiment of the present invention.

[0037] Figure 4 Schematic diagram of the top view of the tray and shoe last according to the first embodiment of the present invention.

[0038] Figure 5 This is a schematic diagram of glue spraying according to the second embodiment of the present invention.

[0039] Among them, 1. Conveyor line; 11. Left front station; 12. Right front station; 13. Middle position; 14. Preparation position; 15. Preparation position card reader; 2. Glue spraying station; 21. Left glue spraying position; 22. Right glue spraying position; 23. Left sensor; 24. Right sensor; 31. Pallet; 32. Sensor; 4. Shoe last; 51. First middle position; 52. Second middle position; 53. Third middle position; 6. First glue spraying station; 61. First left glue spraying position; 62. First right glue spraying position; 7. Second glue spraying station; 71. Second left glue spraying position; 72. Second right glue spraying position; 8. Sensor; 9. Glue spraying robot. DETAILED DESCRIPTION

[0040] Example 1:

[0041] like Figures 2 to 4 As shown, the glue spraying robot 9 of the glue spraying station 2 is used to spray glue on the shoe upper. The glue spraying station 2 has a left glue spraying position 21 and a right glue spraying position 22. A conveyor line 1 for conveying from left to right is provided on one side of the glue spraying station 2. The conveyor line 1 has a left front station 11 and a right front station 12 corresponding to the left glue spraying position 21 and the right glue spraying position 22 respectively. An intermediate position 13 is provided between the left front station 11 and the right front station 12, and a preparatory position 14 is provided upstream of the left front station 11.

[0042] The shoe upper to be sprayed with glue is set on the shoe last 4, and the shoe last 4 is set on the tray 31. The tray 31 is transported by the conveyor line 1. A chip storing the information of the left and right shoe uppers is set inside the shoe last 4. The conveyor line 1 is provided with a card reader that reads the chip information. The tray 31 is transported to the left front station 11 or the right front station 12 according to the content read by the card reader. A sensing sheet 32 ​​is set on the tray 31, and a sensor that can detect the sensing sheet 32 ​​is set on the conveyor line 1. The tray 31 is blocked by the cooperation between the sensor and the sensing sheet 32. More specifically, a blocking member is set at a suitable position on the conveyor line 1. When the sensor senses the sensing sheet 32, the blocking member is actuated to block the corresponding tray 31. The specific structure of the blocking member and the process of controlling it are prior art.

[0043] The shoe uppers to be sprayed are all located on the conveyor line 1. The right shoe upper can only be conveyed to the right front station 12 and cannot be conveyed to the left front station 11. The left shoe upper can only be conveyed to the left front station 11 and cannot be conveyed to the right front station 12. The left and right foot information of the shoe upper is obtained through the preparation position card reader 15. The diversion method includes the following steps:

[0044] Step S1: The first right shoe upper 1A is conveyed to the right front station 12 and then transferred to the right glue spraying station 22; the first left shoe upper 1B is conveyed to the left front station 11 and then transferred to the left glue spraying station 21; the second right shoe upper 2A is conveyed to the middle station 13; and the second left shoe upper 2B is located at the preparation station 14;

[0045] Step S2: The glue spraying robot 9 of the glue spraying station 2 first sprays glue on the first right shoe upper 1A in the right foot posture. After the glue spraying is completed, the glue spraying robot 9 switches to the left foot posture and sprays glue on the first left shoe upper 1B. The first right shoe upper 1A is pushed out of the glue spraying station 2 to the right station front station 12 and released. At the same time, the second right shoe upper 2A is transported to the right station front station 12 and transferred to the right glue spraying station 22.

[0046] Step S3: After the glue spraying of the first left shoe upper 1B is completed, the glue spraying robot 9 switches to the right foot posture to spray glue on the second right shoe upper 2A. The first left shoe upper 1B is pushed out to the left front station 11 and released to the middle position 13. At this time, the second left shoe upper 2B is conveyed to the left front station 11 and transferred to the left glue spraying position 21. Then, the first left shoe upper 1B is released again.

[0047] Step S4: After the glue spraying of the second right shoe upper 2A is completed, the glue spraying robot 9 switches to the left foot posture to spray glue on the second left shoe upper 2B. The second right shoe upper 2A is pushed to the right front station 12 and released;

[0048] In step S5, after the second left shoe upper 2B is glued, it is pushed out to the left front station 11 and released. The third right shoe upper 3A is conveyed to the right front station 12 and transferred to the right glue spraying station 22. The third left shoe upper 3B is conveyed to the left front station 11 and transferred to the left glue spraying station 21. The fourth right shoe upper 4A is transferred to the middle station 13 and enters the next cycle. The process of transferring the shoe upper to the glue spraying station and being pushed out from the glue spraying station is conventional technology.

[0049] In order to further speed up the glue spraying rhythm, a left sensor 23 and a right sensor 24 are provided in the glue spraying station 2. The left sensor 23 is located on the line between the left front station 11 and the left glue spraying station 21, and the right sensor 24 is located on the line between the right front station 12 and the right glue spraying station 22. When the first right shoe upper is detected by the right sensor 24 during the pushing process, the second right shoe upper starts to be released, and when the first right shoe upper leaves the right front station 12, the second right shoe upper arrives at the right front station 12. When the first left shoe upper is detected by the left sensor 23 during the pushing process, the second left shoe upper starts to be released, and when the first left shoe upper leaves the left front station 11, the second left shoe upper arrives at the left front station 11.

[0050] In this embodiment, the left sensor 23 and the right sensor 24 are respectively arranged at the midpoints of corresponding connecting lines.

[0051] Example 2:

[0052] The difference between this embodiment and the first embodiment is that this embodiment has two glue spraying stations 2 and three intermediate positions, and thus has different glue spraying logic. The structure of the conveyor line 1 and the tray 31 is the same as that of the first embodiment.

[0053] Specifically, if Figure 5 As shown, a first glue spraying station 6 and a second glue spraying station 7 are respectively arranged at the same positions on both sides of the conveyor line 1, the first right glue spraying position 62 of the first glue spraying station 6 corresponds to the second left glue spraying position 71 of the second glue spraying station 7, and the first left glue spraying position 61 of the first glue spraying station 6 corresponds to the second right glue spraying position 72 of the second glue spraying station 7. The conveyor line 1 has a left front station 11 and a right front station 12 corresponding to the first left glue spraying position 61 and the first right glue spraying position 62 of the first glue spraying station 6, respectively. A first middle position 51, a second middle position 52 and a third middle position 53 are arranged between the left front station 11 and the right front station 12. The first middle position 51 is close to the right front station 12, the third middle position 53 is close to the left front station 11, and the second middle position 52 is located between the first middle position 51 and the third middle position 53. A preparatory position 14 is arranged upstream of the left front station 11. The diversion method includes the following steps:

[0054] Step S1: The first right shoe upper 1A, the first left shoe upper 1B, and the second right shoe upper 2A are sequentially conveyed by the conveyor line 1 to the first middle position 51, the second middle position 52, and the third middle position 53, and the second left shoe upper 2B is located at the preparation position 14;

[0055] Step S2: The first right shoe upper 1A is conveyed to the right front station 12 and transferred to the first right glue spraying position 62 of the first glue spraying station 6. Meanwhile, the second left shoe upper 2B is conveyed to the left front station 11 and transferred to the first left glue spraying position 61 of the first glue spraying station 6. The glue spraying robot 9 of the first glue spraying station 6 sprays glue on the first right shoe upper 1A in the right foot posture.

[0056] Step S3: The first left shoe upper 1B is conveyed to the right front station 12 and transferred to the second left glue spraying position 71 of the second glue spraying station 7. At the same time, the third right shoe upper 3A is conveyed to the left front station 11 and transferred to the second right glue spraying position 72 of the second glue spraying station 7. The robot of the second glue spraying station 7 sprays glue on the first left shoe upper 1B in the left foot posture. At this time, the second right shoe upper 2A is conveyed to the first middle position 51 and blocked by the blocking member.

[0057] Step S4: transport the third left shoe upper 3B from the preparation position 14 to the second middle position 52, and the fourth right shoe upper 4A is located at the preparation position 14 and is blocked;

[0058] Step S5: After the glue spraying of the first right shoe upper 1A is completed, the robot of the first glue spraying station 6 switches to the left foot posture to spray glue on the second left shoe upper 2B. The first right shoe upper 1A is pushed out to the right station front station 12 and released. The second right shoe upper 2A is conveyed to the right station front station 12 and transferred to the first right glue spraying position 62 of the first glue spraying station 6. The third left shoe upper 3B is conveyed to the first middle position 51.

[0059] Step S6: After the glue spraying of the first left shoe upper 1B is completed, the robot of the second glue spraying station 7 switches to the right foot posture to spray glue on the third right shoe upper 3A. The first left shoe upper 1B is pushed out to the right station front station 12 and released. The third left shoe upper 3B is conveyed to the right station front station 12 and transferred to the second left glue spraying station 71 of the second glue spraying station 7.

[0060] Step S7: After the glue spraying of the second left shoe upper 2B is completed, the robot of the first glue spraying station 6 switches to the right foot posture to spray glue on the second right shoe upper 2A, and the second left shoe upper 2B is pushed to the left station front station 11 and released;

[0061] Step S8: After the glue spraying of the third right shoe upper 3A is completed, the robot of the second glue spraying station 7 switches to the left foot posture to spray glue on the third left shoe upper 3B. The third right shoe upper 3A is pushed to the left station front station 11 and then released.

[0062] Step S9: After the second right shoe upper 2A is sprayed with glue, it is pushed to the right front station 12 and released. After the third left shoe upper 3B is sprayed with glue, it is pushed to the right front station 12 and released.

[0063] Step S10: Release the fourth right shoe upper 4A, the fourth left shoe upper 4B and the fifth right shoe upper 5A into the first middle position 51, the second middle position 52 and the third middle position 53 respectively, and enter the next cycle.

[0064] Sensors 8 are provided on the line connecting the first left glue spraying position 61 of the first glue spraying station 6 and the left front station 11, the line connecting the first right glue spraying position 62 and the right front station 12, and the line connecting the second left glue spraying position 71 of the second glue spraying station 7 and the right front station 12, and the line connecting the second right glue spraying position 72 and the left front station 11. When the shoe upper after glue spraying is sensed by the corresponding sensor 8 during the process of being pushed out, the corresponding shoe upper to be glued starts to be released. When the shoe upper after glue spraying leaves the left front station 11 or the right front station 12, the shoe upper to be glued arrives at the left front station 11 or the right front station 12.

[0065] In this embodiment, each sensor 8 is arranged at the midpoint of the corresponding connecting line.

[0066] The above description is merely a preferred embodiment of the present invention and therefore cannot be used to limit the scope of the present invention. In other words, equivalent changes and modifications made according to the scope of the patent application and the contents of the specification should still fall within the scope of the patent of the present invention.

Claims

1. A method for diverting glue spraying on shoe uppers, wherein a glue spraying robot at a glue spraying station sprays glue on the shoe uppers. The glue spraying station has a left glue spraying station and a right glue spraying station. A conveyor line is provided on one side of the glue spraying station, which transports from left to right. The conveyor line has a left front station and a right front station corresponding to the left glue spraying station and the right glue spraying station, respectively. The method is characterized by: An intermediate station is set between the left station and the right station. The diversion method includes the following steps: Step S1: The first right shoe upper is conveyed to the right front station and then transferred to the right glue spraying station; the first left shoe upper is conveyed to the left front station and then transferred to the left glue spraying station; the second right shoe upper is conveyed to the middle station; Step S2: The glue spraying robot at the glue spraying station first sprays glue on the first right shoe upper in the right foot posture. After the glue spraying is completed, the glue spraying robot switches to the left foot posture and sprays glue on the first left shoe upper. The first right shoe upper is pushed to the right front station and released. At the same time, the second right shoe upper is transported to the right front station and transferred to the right glue spraying station. Step S3: After the glue spraying of the first left shoe upper is completed, the glue spraying robot switches to the right foot posture to spray glue on the second right shoe upper. The first left shoe upper is pushed out to the left front station and released to the middle position. At this time, the second left shoe upper is transported to the left front station and transferred to the left glue spraying position, and then the first left shoe upper is released again; Step S4: After the glue spraying of the second right shoe upper is completed, the glue spraying robot switches to the left foot posture to spray glue on the second left shoe upper. The second right shoe upper is pushed to the right front station and released; Step S5: After the second left shoe upper is sprayed with glue, it is pushed to the left front station and released. The third right shoe upper is transported to the right front station and transferred to the right glue spraying position. The third left shoe upper is transported to the left front station and transferred to the left glue spraying position. The fourth right shoe upper is transferred to the middle position and enters the next cycle.

2. A shoe upper glue spraying and diverting method according to claim 1, characterized in that: The glue spraying station is provided with a left sensor and a right sensor. The left sensor is located on the line between the left front station and the left glue spraying station, and the right sensor is located on the line between the right front station and the right glue spraying station. When the first right shoe upper is detected by the right sensor during the pushing process, the second right shoe upper starts to be released, and when the first right shoe upper leaves the right front station, the second right shoe upper arrives at the right front station. When the first left shoe upper is detected by the left sensor during the pushing process, the second left shoe upper starts to be released, and when the first left shoe upper leaves the left front station, the second left shoe upper arrives at the left front station.

3. The method for spraying glue on a shoe upper according to claim 2, characterized in that: The left sensor and the right sensor are respectively arranged at the midpoints of corresponding connecting lines.

4. A method for spraying glue on a shoe upper according to claim 1, 2 or 3, characterized in that: The shoe upper is set on the shoe last, and the shoe last is set on the tray. The tray is transported by the conveyor line. The tray is provided with an induction sheet. The conveyor line is provided with a sensor that can detect the induction sheet. The tray is blocked by the cooperation of the sensor and the induction sheet.

5. The method for spraying glue on a shoe upper according to claim 4, characterized in that: A chip storing information of the left and right uppers is provided inside the shoe last, and a card reader for reading the chip information is provided on the conveyor line. The tray is conveyed to the left front station or the right front station according to the content read by the card reader.

6. A method for diverting glue spraying on a shoe upper, characterized by: A first glue spraying station and a second glue spraying station are respectively arranged at the same positions on both sides of the conveying line conveying from left to right, the first right glue spraying position of the first glue spraying station corresponds to the second left glue spraying position of the second glue spraying station, and the first left glue spraying position of the first glue spraying station corresponds to the second right glue spraying position of the second glue spraying station. The conveying line has a left front station and a right front station corresponding to the first left glue spraying position and the first right glue spraying position of the first glue spraying station respectively, and a first middle position, a second middle position and a third middle position are arranged between the left front station and the right front station. The first middle position is close to the right front station, the third middle position is close to the left front station, the second middle position is located between the first and third middle positions, and a preparatory position is arranged upstream of the left front station. The diversion method includes the following steps: Step S1: The first right shoe upper, the first left shoe upper, and the second right shoe upper are sequentially conveyed by a conveyor line to the first middle position, the second middle position, and the third middle position, and the second left shoe upper is located at the preparation position; Step S2: The first right shoe upper is conveyed to the right front station and transferred to the first right glue spraying position of the first glue spraying station. At the same time, the second left shoe upper is conveyed to the left front station and transferred to the first left glue spraying position of the first glue spraying station. The glue spraying robot of the first glue spraying station sprays glue on the first right shoe upper in the posture of the right foot. Step S3: The first left shoe upper is conveyed to the right front station and transferred to the second left glue spraying position of the second glue spraying station. At the same time, the third right shoe upper is conveyed to the left front station and transferred to the second right glue spraying position of the second glue spraying station. The robot of the second glue spraying station sprays glue on the first left shoe upper in the left foot posture. At this time, the second right shoe upper is conveyed to the first middle position and blocked. Step S4: transport the third left shoe upper to the second middle position, and the fourth right shoe upper is located in the preparation position and blocked; Step S5: After the glue spraying of the first right shoe upper is completed, the robot of the first glue spraying station switches to the left foot posture to spray glue on the second left shoe upper. The first right shoe upper is pushed out to the right station front station and released. The second right shoe upper is conveyed to the right station front station and transferred to the first right glue spraying station of the first glue spraying station. Step S6: After the glue spraying of the first left shoe upper is completed, the robot of the second glue spraying station switches to the right foot posture to spray glue on the third right shoe upper. The first left shoe upper is pushed out to the right station front station and released. The third left shoe upper is conveyed to the right station front station and transferred to the second left glue spraying station of the second glue spraying station. Step S7: After the glue spraying of the second left shoe upper is completed, the robot of the first glue spraying station switches to the right foot posture to spray glue on the second right shoe upper, and the second left shoe upper is pushed to the front station of the left station and released; Step S8: After the glue spraying of the third right shoe upper is completed, the robot of the second glue spraying station switches to the left foot posture to spray glue on the third left shoe upper. The third right shoe upper is pushed to the front station of the left station and then released. Step S9: After the second right shoe upper is sprayed with glue, it is pushed to the right front station and released. After the third left shoe upper is sprayed with glue, it is pushed to the right front station and released. Step S10: Release the fourth right shoe upper, the fourth left shoe upper, and the fifth right shoe upper into the first middle position, the second middle position, and the third middle position, respectively, and enter the next cycle.

7. The method for spraying glue on a shoe upper according to claim 6, characterized in that: Sensors are provided on the connecting line between the first left glue spraying position and the left front station of the first glue spraying station, on the connecting line between the first right glue spraying position and the right front station of the second glue spraying station, and on the connecting line between the second left glue spraying position and the right front station of the second glue spraying station, and on the connecting line between the second right glue spraying position and the left front station. When the shoe upper after glue spraying is sensed by the corresponding sensor during the process of being pushed out, the corresponding shoe upper to be glued starts to be released. When the shoe upper after glue spraying leaves the left front station or the right front station, the shoe upper to be glued arrives at the left front station or the right front station.

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