Sole and vamp bonding surface sizing method

Abstract

The invention relates to the field of shoe gluing methods, and provides a sole and vamp bonding surface gluing method which comprises the following steps: fixing an elastic film on a fixed seat, forming a cavity above the fixed seat and the elastic film, applying glue on the elastic film, closing a vamp or sole with a shoe mold, and gluing the vamp or sole with the shoe mold. The elastic film is located between the shoe mold and the vamp or the shoe sole and deforms, the top face, coated with glue, of the elastic film is a gluing face, the bottom face of the elastic film is a pressing face, the glue on the elastic film is used for gluing the vamp or the shoe sole, a layer of glue face with the uniform thickness is formed on the vamp or the shoe sole, and after gluing is completed, the vamp or the shoe sole and the shoe mold are demolded. And carrying out the next round of sizing. According to the invention, stable and accurate sizing can be realized, the thickness of a glue layer is uniform, the fluctuation of bonding strength is small, the risk of degumming or glue failure of a product is reduced, stable and accurate sizing of bonding surfaces of vamp materials spliced by various materials and various styles is realized, and the technical problems of poor sizing effect, high cost and low efficiency of shoes are solved.

Description

Technical Field

[0001] The invention relates to the field of shoe gluing methods, in particular to a gluing method for the bonding surface between a sole and an upper. Background Art

[0002] The following defects and problems exist in the field of traditional manual shoemaking and automated shoemaking production lines:

[0003] 1. In the existing shoe upper materials that are made of multiple materials and various styles, there are problems with glue spraying and coating on the splicing surface, uneven glue application, inconsistent glue lines, high and low, jagged, and unstable glue, which lead to the occurrence of glue debonding, high glue, and low glue.

[0004] 2. Manual operation is easily affected by factors such as experience and physical strength, resulting in uneven thickness of the adhesive layer, which leads to fluctuations in bonding strength and increases the risk of product debonding or opening.

[0005] 3. The speed of manual glue brushing is much lower than that of automated equipment, which is difficult to meet the needs of large-scale production and becomes a bottleneck of the assembly line.

[0006] 4. Glue contains volatile organic compounds (VOCs) such as benzene and formaldehyde. Long-term exposure can easily cause respiratory diseases, skin allergies and even cancer risks.

[0007] 5. Manual gluing relies on skilled workers, which requires long-term training and the labor cost is rising year by year, which increases the labor burden of enterprises. Different workers have different techniques, and the quality of the same batch of products is uneven, which affects the brand reputation.

[0008] 6. In the automatic shoe-making molding production line, during the glue spraying process, glue blockage often occurs inside the glue spray valve, resulting in glue leakage and glue shortage on the bonding surface of the shoe material.

[0009] 7. Manual control of glue quantity has low precision, which may lead to over-application or omission of glue, resulting in glue waste or increased rework costs.

[0010] 8. Reliance on traditional processes hinders technological upgrades, makes it difficult to adapt to the trend of intelligent manufacturing, and restricts the improvement of industry competitiveness.

[0011] 9. In the automated shoemaking production line, when the glue spray valve uses high-viscosity oil-based glue to apply glue, the glue line is uneven, jagged, insufficiently spread, and uneven.

[0012] 10. The speed and efficiency of changing shoe production and debugging equipment in the automated shoe-making production line are low, making it difficult to adapt to the production of multiple styles of shoes.

[0013] 11. In the automated shoemaking production line, when spraying glue with water-based glue, the glue may appear foggy at the lower edge and flow downward, and the shoe may not fit the surface.

[0014] 12. When applying glue on the uppers of shoes made of multiple splicing materials in the automated shoe-making production line, due to the different glue absorption properties of different materials, it is easy for the glue line to be partially higher or lower than the fitting surface, resulting in high or low glue on the shoes and causing the shoes to be scrapped.

[0015] In summary, the existing shoe gluing method has the problems of poor effect, high cost and low efficiency. Summary of the Invention

[0016] Therefore, in view of the above problems, the present invention provides a method for gluing the adhesive surface between the sole and the upper, which solves the technical problems of poor gluing effect, high cost and low efficiency of shoes.

[0017] To achieve the above object, the present invention adopts the following technical solutions:

[0018] A method for gluing the bonding surface between a sole and an upper, comprising the following steps:

[0019] The elastic film is fixed on the fixing seat, and a cavity is formed above the fixing seat and the elastic film. Glue is applied to the elastic film, and the upper or sole is molded with the shoe mold. The elastic film is located between the shoe mold and the upper or sole and deforms. The top surface of the elastic film where glue is applied is the gluing surface, and the bottom surface is the pressing surface. The glue on the elastic film is applied to the upper or sole to form a layer of glue with uniform thickness on the upper or sole. After gluing is completed, the upper or sole is demolded from the shoe mold for the next round of gluing.

[0020] Further:

[0021] The frame is slidably provided with at least one sliding part, the frame is provided with a driving device for driving the sliding part to move, the sliding part is provided with a moving device, and the moving device can fix and move the upper or sole; the sliding part is provided with at least one first telescopic mechanism, and the moving device is arranged at the telescopic end of the first telescopic mechanism; the driving device drives the sliding part to move above the upper or sole, the first telescopic mechanism drives the moving device to move to fix the upper or sole, and moves the upper or sole to above or below the elastic film for mold closing, and after the gluing is completed, the upper or sole is removed.

[0022] The moving device is a clamping device or a suction cup device, the clamping device can clamp the shoe upper or the suction cup device can absorb the shoe sole.

[0023] There are at least two sliding parts, and the frame is provided with a guide rail. The sliding parts can slide on the guide rail, and the guide rail forms at least one closed loop structure; when one of the sliding parts is applying glue, the other sliding parts can move to other workstations through the guide rail to place or clamp the sole or upper.

[0024] The frame is provided with a glue-adding device, which can apply glue to the elastic film in a timely and quantitative manner.

[0025] When the sole is glued, the shoe mold is the upper mold; when the upper is glued, the shoe mold is the sole mold. A shoe last is installed in the upper, and the moving device and the shoe last are provided with at least one pair of mutually cooperating strips and holes.

[0026] The shoe mold is driven to move upward by the second telescopic mechanism.

[0027] The shoe mold moves upward to lift the elastic film to form a bulge, a small amount of glue is located at the bulge, and excess glue flows around. The small amount of glue at the bulge is used to glue the upper or sole.

[0028] A mounting seat is provided on the frame, a reset mechanism is provided between the mounting seat and the shoe mold, at least one pair of mutually cooperating positioning holes and positioning pins are provided between the second telescopic mechanism and the shoe mold, the reset mechanism is at least one reset spring, and the second telescopic mechanism is a telescopic cylinder; the positioning pin of the second telescopic mechanism is inserted into the positioning hole of the shoe mold, the shoe mold is separated from the mounting seat, and after the gluing is completed, the shoe mold is reset on the mounting seat through the reset mechanism.

[0029] There are multiple shoe molds of different sizes. The multiple shoe molds are arranged on a mold device, and the mold device can move one of the shoe molds to the gluing station; the mold device includes a mold wheel arranged on a frame, a first driving mechanism for driving the mold wheel to rotate, and multiple shoe molds are arranged on the mold wheel.

[0030] By adopting the above technical solution, the beneficial effects of the present invention are:

[0031] 1. The present invention can stably and accurately apply glue. The elastic film is located between the shoe mold and the sole or upper. The shoe mold and the sole or upper are molded together, and the glue on the elastic film is applied to the sole or upper. The thickness of the glue layer is uniform, and the bonding strength fluctuation is small, which reduces the risk of product degumming or opening, and realizes stable and accurate gluing of the bonding surface of the upper materials with multiple materials and multiple styles.

[0032] 2. Avoid the problem of glue blockage inside the glue spray valve and pipeline when using glue.

[0033] 3. It is very suitable for various high-viscosity shoe upper adhesive glues, avoiding the problems of uneven glue lines, jagged shapes, insufficient spreading width and unevenness.

[0034] 4. The glue has high adaptability and can be used for all kinds of high-viscosity oil-based glue used for bonding various shoe materials. This avoids the situation where glue overflows, edge fogging, and glue flows down outside the shoe surface when using water-based glue.

[0035] 5. Use automated equipment to improve production efficiency and replace traditional manual production, protecting the health risks and hazards of traditional manual glue application that may cause human contact with glue.

[0036] 6. The improved new process of gluing has increased the popularity of the equipment compared to the whole-line automated production line on the market. Due to its simple structure and being a single-station device, it avoids the application of the working principles of industrial robots, industrial cameras, and imported spray valves, greatly reducing the manufacturing cost of the equipment.

[0037] 7. The second telescopic mechanism drives the shoe mold to move upward to lift the elastic film to form a bulge. A small amount of glue is located at the bulge, and the excess glue will flow to the side, which can control the amount of glue and improve the accuracy and efficiency of gluing. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a structural schematic diagram of the glue applying device of the present invention.

[0039] Figure 2 It is a partial structural diagram of the gluing device.

[0040] Figure 3 It is a schematic diagram of the local structure of the mold device.

[0041] Figure 4 It is a structural diagram of the second telescopic mechanism and the shoe mold.

[0042] Figure 5 This is an exploded view of the shoe mold and mounting base.

[0043] Figure 6 It is a structural diagram of the elastic film and the fixing seat.

[0044] Figure 7 It is a structural schematic diagram of the first telescopic mechanism and the clamping device.

[0045] Figure 8 It is a structural diagram of a shoe last.

[0046] Figure 9 It is a structural schematic diagram of a glue application device having a first conveying device and a second conveying device.

[0047] Figure 10 It is a structural schematic diagram of a gluing device applying glue to a shoe sole.

[0048] Reference numerals:

[0049] 1. Frame; 11. Sliding portion; 12. Driving device; 13. Guide rail; 2. Elastic film; 21. Fixed seat; 22. Cavity; 3. Shoe mold; 30. Positioning hole; 31. Sole mold; 32. Upper mold; 4. Mold device; 41. Mold wheel; 42. First driving mechanism; 43. Second telescopic mechanism; 430. Positioning pin; 44. Mounting seat; 45. Resetting mechanism; 5. Moving device; 51. Clamping device; 510. Insertion strip; 52. Suction cup device; 6. First telescopic mechanism; 7. Shoe last; 70. Insertion hole; 8. First conveying device; 9. Second conveying device. DETAILED DESCRIPTION

[0050] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0051] refer to Figures 1 to 10 This embodiment provides a method for gluing the bonding surface between the sole and the upper, including the following methods:

[0052] The elastic film 2 is fixed on the fixing seat 21, and a cavity 22 is formed above the fixing seat 21 and the elastic film 2. Glue is applied to the elastic film 2, and the upper or sole is molded with the shoe mold 3. The elastic film 2 is located between the shoe mold 3 and the upper or sole and deforms. The top surface of the elastic film 2 where the glue is applied is the gluing surface, and the bottom surface is the pressing surface. The glue on the elastic film 2 is applied to the upper or sole to form a layer of glue with uniform thickness on the upper or sole. After the gluing is completed, the upper or sole is demolded from the shoe mold 3 and the next round of gluing is carried out.

[0053] In one embodiment, a sliding portion 11 is slidably provided on the frame 1, and a driving device 12 for driving the sliding portion 11 to move is provided on the frame 1. A moving device 5 is provided on the sliding portion 11, and the moving device 5 can fix and move the upper or sole; the sliding portion 11 is provided with a first telescopic mechanism 6, and the moving device 5 is provided at the telescopic end of the first telescopic mechanism 6; the driving device 12 drives the sliding portion 11 to move above the upper or sole, and the first telescopic mechanism 6 drives the moving device 5 to move to fix the upper or sole, and move the upper or sole to above or below the elastic film 2 for mold closing. After the gluing is completed, the upper or sole is removed.

[0054] In one embodiment, the moving device 5 is a clamping device 51 or a suction cup device 52 , and the clamping device 51 can clamp the shoe upper or the suction cup device 52 can absorb the shoe sole.

[0055] In one embodiment, the number of sliding parts 11 is at least two, and a guide rail 13 is provided on the frame 1. The sliding parts 11 can slide on the guide rail 13, and the guide rail 13 forms a closed loop structure; when one of the sliding parts 11 is applying glue, the other sliding parts 11 can move to other workstations through the guide rail 13 to place or clamp the sole or upper.

[0056] In one embodiment, a glue replenishing device is provided on the frame 1 , and the glue replenishing device can apply glue to the elastic film 2 in a timely and quantitative manner.

[0057] In one embodiment, when gluing the sole, the shoe mold 3 is the upper mold 32; when gluing the upper, the shoe mold 3 is the sole mold 31, a shoe last 7 is installed in the upper, and the movable device 5 and the shoe last 7 are provided with inserts 510 and sockets 70 that cooperate with each other.

[0058] In one embodiment, the shoe mold 3 is driven to move upward by the second telescopic mechanism 43 .

[0059] In one embodiment, the shoe mold 3 moves upward to lift the elastic film 2 to form a bulge, a small amount of glue is located at the bulge, and excess glue flows around. The small amount of glue at the bulge is used to glue the upper or sole.

[0060] In one embodiment, a mounting seat 44 is provided on the frame 1, a reset mechanism 45 is provided between the mounting seat 44 and the shoe mold 3, and a positioning hole 30 and a positioning pin 430 that cooperate with each other are provided between the second telescopic mechanism 43 and the shoe mold 3. The reset mechanism 45 is a reset spring, and the second telescopic mechanism 43 is a telescopic cylinder; the positioning pin 430 of the second telescopic mechanism 43 is inserted into the positioning hole 30 of the shoe mold 3, and the shoe mold 3 is separated from the mounting seat 44. After the gluing is completed, the shoe mold 3 is reset on the mounting seat 44 through the reset mechanism 45.

[0061] In one embodiment, there are multiple shoe molds 3, and the sizes of the multiple shoe molds 3 are different. The multiple shoe molds 3 are arranged on a mold device 4, and the mold device 4 can move one of the shoe molds 3 to the gluing station; the mold device 4 includes a mold wheel 41 arranged on the frame 1, and a first driving mechanism 42 that drives the mold wheel 41 to rotate, and multiple shoe molds 3 are arranged on the mold wheel 41.

[0062] refer to Figure 9 In one embodiment, the frame 1 is further provided with a first conveying device 8 and a second conveying device 9 , wherein the first conveying device 8 is located at the front end of the elastic film 2 , and the second conveying device 9 is located at the rear end of the elastic film 2 .

[0063] The first conveying device 8 and the second conveying device 9 may be conveyor belt devices or other devices, which are well-known devices and will not be described in detail here.

[0064] refer to Figure 10 In one embodiment, when gluing the sole, the shoe mold 3 is a sole mold 31, the clamping device 51 is replaced by a suction cup device 52, and the sole is adsorbed by the suction cup device 52. The gluing method is the same as the above-mentioned upper gluing method, which will not be repeated here.

[0065] The number of the shoe mold 3 can also be one, and the shoe mold 3 can also be fixed on the frame 1 and cannot be moved, and can be replaced manually.

[0066] The sizes of each shoe mold 3 are usually different and can correspond to shoe uppers of different sizes.

[0067] The elastic film 2 can be made of rubber, silicone or other materials with elasticity, which are well-known materials and will not be described in detail here.

[0068] The elastic film 2 can be made of rubber, silicone or other materials with elasticity, which are well-known materials and will not be described in detail here.

[0069] The mold device 4 may also be a belt device or other devices, which are well-known devices and will not be described in detail here.

[0070] The first driving mechanism 42 is a well-known device and will not be described in detail here.

[0071] The number of the sliding parts 11 can be one, two, three or even more, depending on the specific situation.

[0072] When three sliding parts 11 are provided, the three sliding parts 11 can work simultaneously, thereby improving efficiency.

[0073] The sliding portion 11 is a roller, and may also be a slide seat or other slidable structure, which is a well-known structure and will not be described in detail here.

[0074] The driving device 12 may be a servo motor device or other devices, which are well-known devices and will not be described in detail here.

[0075] The sliding portion 11 may also not be provided, and the upper or sole may be placed on the clamping device 51 or the suction cup device 52 manually, which may be provided according to specific circumstances.

[0076] A shoe last 7 is usually installed on the shoe upper, and a socket 70 corresponding to the insert 510 is set on the shoe last 7 to achieve positioning; the above-mentioned insert 510 can also be replaced by the socket 70, that is, an insert 510 corresponding to the socket 70 is set on the shoe last 7, and the specific setting is based on the situation.

[0077] The sole usually has a better adsorption effect by using a suction cup device 52, and the upper can also be adsorbed and fixed by using the suction cup device 52, which is specifically set according to the situation.

[0078] The sliding portion 11 can be moved to the front end via the annular guide rail 13 to work in a circular manner, thereby improving efficiency.

[0079] The second telescopic mechanism 43 can also be configured as an immovable structure. The second telescopic mechanism 43 is fixed to the frame 1 to drive the shoe mold 3 to move.

[0080] The second telescopic mechanism 43 may not be provided, and the shoe mold 3 may be moved to a position close to the elastic film 2 , which may be provided according to specific circumstances.

[0081] The above-mentioned reset mechanism 45 can also be a rubber band or other components capable of reset, which are well-known components and will not be described in detail here.

[0082] The shoe upper or the shoe sole of the present invention can also be manually operated by manually picking up the shoe upper or the shoe sole and moving it toward the elastic film 2 and the shoe mold 3 .

[0083] The number of the above-mentioned shoe mold 3 can also be one, and the shoe mold 3 is fixed on the frame 1 or the second telescopic mechanism 43, and the shoe mold 3 is replaced manually; the specific setting depends on the situation.

[0084] The above-mentioned glue replenishing device can replenish glue to the elastic film 2 at a regular and quantitative basis. It is not shown in the figure and is a well-known device, so it will not be described here. The above-mentioned glue replenishing device can also be omitted and glue can be applied manually, which is specifically set according to the situation.

[0085] The clamping device 51 and the suction cup device 52 are well-known devices and will not be described in detail here.

[0086] Although the present invention has been particularly shown and described in conjunction with preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made to the present invention without departing from the spirit and scope of the invention as defined in the appended claims, and all such changes are within the scope of protection of the present invention.

Claims

1. A method for gluing the bonding surface between a sole and an upper, characterized in that: This includes the following methods: The elastic film is fixed on the fixing seat, and a cavity is formed above the fixing seat and the elastic film. Glue is applied to the elastic film, and the upper or sole is molded with the shoe mold. The elastic film is located between the shoe mold and the upper or sole and deforms. The top surface of the elastic film where glue is applied is the gluing surface, and the bottom surface is the pressing surface. The glue on the elastic film is applied to the upper or sole to form a layer of glue with uniform thickness on the upper or sole. After gluing is completed, the upper or sole is demolded from the shoe mold for the next round of gluing.

2. The method for gluing the adhesive surface between the sole and the upper according to claim 1, characterized in that: The frame is slidably provided with at least one sliding part, the frame is provided with a driving device for driving the sliding part to move, the sliding part is provided with a moving device, and the moving device can fix and move the upper or sole; the sliding part is provided with at least one first telescopic mechanism, and the moving device is arranged at the telescopic end of the first telescopic mechanism; the driving device drives the sliding part to move above the upper or sole, the first telescopic mechanism drives the moving device to move to fix the upper or sole, and moves the upper or sole to above or below the elastic film for mold closing, and after the gluing is completed, the upper or sole is removed.

3. The method for gluing the adhesive surface between the sole and the upper according to claim 2, characterized in that: The moving device is a clamping device or a suction cup device, the clamping device can clamp the shoe upper or the suction cup device can absorb the shoe sole.

4. The method for gluing the adhesive surface between the sole and the upper according to claim 2, characterized in that: There are at least two sliding parts, and the frame is provided with a guide rail. The sliding parts can slide on the guide rail, and the guide rail forms at least one closed loop structure; when one of the sliding parts is applying glue, the other sliding parts can move to other workstations through the guide rail to place or clamp the sole or upper.

5. The method for gluing the adhesive surface between the sole and the upper according to claim 2, characterized in that: The frame is provided with a glue-adding device, which can apply glue to the elastic film in a timely and quantitative manner.

6. The method for gluing the adhesive surface between the sole and the upper according to claim 2, characterized in that: When the sole is glued, the shoe mold is the upper mold; when the upper is glued, the shoe mold is the sole mold. A shoe last is installed in the upper, and the moving device and the shoe last are provided with at least one pair of mutually cooperating strips and holes.

7. A method for gluing the bonding surface between a sole and an upper according to any one of claims 1 to 6, characterized in that: The shoe mold is driven to move upward by the second telescopic mechanism.

8. The method for gluing the adhesive surface between the sole and the upper according to claim 7, characterized in that: The shoe mold moves upward to lift the elastic film to form a bulge, a small amount of glue is located at the bulge, and excess glue flows around. The small amount of glue at the bulge is used to glue the upper or sole.

9. The method for gluing the bonding surface between the sole and the upper according to claim 7, characterized in that: A mounting seat is provided on the frame, a reset mechanism is provided between the mounting seat and the shoe mold, at least one pair of mutually cooperating positioning holes and positioning pins are provided between the second telescopic mechanism and the shoe mold, the reset mechanism is at least one reset spring, and the second telescopic mechanism is a telescopic cylinder; the positioning pin of the second telescopic mechanism is inserted into the positioning hole of the shoe mold, the shoe mold is separated from the mounting seat, and after the gluing is completed, the shoe mold is reset on the mounting seat through the reset mechanism.

10. The method for gluing the bonding surface between the sole and the upper according to claim 7, characterized in that: There are multiple shoe molds of different sizes. The multiple shoe molds are arranged on a mold device, and the mold device can move one of the shoe molds to the gluing station; the mold device includes a mold wheel arranged on a frame, a first driving mechanism for driving the mold wheel to rotate, and multiple shoe molds are arranged on the mold wheel.

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