Wedge strip gluing device

Abstract

The invention relates to a welt gluing device, and relates to the technical field of gluing structures, the welt gluing device comprises a base station and a supporting roller rotationally arranged on the base station, a gluing roller located above the supporting roller is arranged on the base station, the gluing roller and the supporting roller are coaxially arranged, and a driving part for driving the supporting roller and the gluing roller to rotate reversely is arranged on the base station; a fixed convex ring is fixedly arranged on the periphery of the end, away from the driving part, of the gluing roller, a first ring groove is formed in the periphery of the fixed convex ring, a feeding gap for insertion of the welt is formed between the fixed convex ring and the supporting roller, and a glue injection pipe located above the first ring groove is arranged above the base station; according to the gluing device, when the gluing device operates, automatic gluing of the welt is achieved, the corresponding gluing efficiency is improved, and the requirement for large-batch production is met.

Description

Technical Field

[0001] The present application relates to the technical field of gluing structures, and in particular to a gluing device for welts. Background Art

[0002] In the delicate craftsmanship of women's shoes, the welt undoubtedly plays a pivotal role. It cleverly connects the upper and the sole, not only bearing the weight of the wearer, but also dealing with the complex mechanical challenges generated when walking. The stability of the welt is directly related to the durability and wearing comfort of the shoes, so it is particularly important to ensure that the welt is tightly bonded to the upper and the sole.

[0003] A method of applying glue to the welt. First of all, it is very important to choose a suitable brush. The softness and stability of the bristles directly affect the uniform application of the glue and the subsequent bonding effect. Avoid the bristles from falling off and mixing with the glue, which will affect the bonding quality. Next, the glue needs to be carefully and evenly applied to every inch of the welt surface. This requires the operator to have a high degree of concentration and skills to ensure that there are no omissions and no accumulation, so as to maintain the best bonding interface. In addition, the speed of applying glue must also be precisely controlled to ensure that the glue is evenly distributed and to prevent it from drying too quickly, which will affect the bonding strength.

[0004] However, in the mass production process of women's shoes, this traditional method of brushing glue obviously cannot meet the needs of efficient production; it takes too long, which not only increases production costs, but may also delay delivery and affect the company's market competitiveness. There is room for improvement. Summary of the invention

[0005] The purpose of this application is to provide a device for gluing along the strip to solve the problem that the traditional gluing method is low in efficiency and cannot meet the needs of mass production.

[0006] The present application provides a device for gluing the welts using the following technical solution: A device for gluing a strip along the edge comprises a base and a supporting roller rotatably arranged on the base, a gluing roller located above the supporting roller is arranged on the base, the gluing roller and the supporting roller are coaxially arranged, and a driving member for driving the supporting roller and the gluing roller to rotate in opposite directions is arranged on the base; a fixed convex ring is fixedly arranged on the outer periphery of the end of the gluing roller away from the driving member, a first annular groove is opened on the outer periphery of the fixed convex ring, a feeding gap for inserting the strip along the edge is arranged between the fixed convex ring and the supporting roller, and a glue injection tube located above the first annular groove is arranged above the base.

[0007] By adopting the above technical scheme, when the gluing device is running, the driving member is started in advance to drive the supporting roller and the gluing roller to rotate in opposite directions, and then the edge strip is inserted into the feed gap below the first annular groove, and the opposite sides of the edge strip are respectively pressed against the outer circumference of the supporting roller and the gluing roller. During this process, the glue injection tube injects glue into the first annular groove, and as the gluing roller rotates, the glue is evenly coated on the edge strip; automatic gluing of the edge strip is realized, and the corresponding gluing efficiency is improved, so that it can meet the needs of mass production.

[0008] Optionally, a supporting sleeve is provided above the base and is coaxially rotatably connected to the rubber roller. Relative rotating plates and connecting plates are respectively fixed on the outer periphery of the supporting sleeve, and the end of the rotating plate is rotatably connected to the upper side of the base through a rotating shaft; a locking bolt is provided above the base, and a locking through hole is provided on the connecting plate for the locking bolt to pass through. A fastening sleeve is threadedly sleeved on the outer periphery of the locking bolt and located on opposite sides of the connecting plate. There is a gap between the locking bolt and the locking through hole, and a locking screw hole is provided on the upper side of the base for the locking bolt to be screwed into.

[0009] By adopting the above technical solution, due to the combined arrangement of the support sleeve and the locking bolt, the installation angle between the locking bolt and the connecting plate can be appropriately adjusted. Therefore, the user can adjust the spacing size of the feed gap by adjusting the depth of the locking bolt screwed into the locking screw hole, so as to make it suitable for edge strips of different thicknesses, thereby improving the performance of the gluing device.

[0010] Optionally, the driving member includes a first gear rotatably arranged on the side of the base, and a driving motor fixed to the side of the base and driving the first gear to rotate; a second gear meshing with the first gear is coaxially fixed to one end of the supporting roller, a third gear meshing with the first gear is fixed at the end of the rotating shaft, and a fourth gear meshing with the third gear is fixed at the end of the glue roller.

[0011] By adopting the above technical solution, a single drive motor can be used to drive the support roller and the gluing roller to rotate in opposite directions, thereby reducing energy consumption during the gluing process and further reducing overall production costs.

[0012] Optionally, a support plate is provided on the outside of the support sleeve, and two bending plates that are detachably connected to the rotating plate and the connecting plate are vertically fixed at both ends of the support plate; extension plates whose length directions are parallel to the length direction of the support roller are fixed on the opposite side surfaces of the support plate, and a positioning groove for the injection hose to be inserted and fixed is provided on the side of the extension plate away from the support sleeve, and a positioning through hole is provided on the extension plate, which is located above the first annular groove and through which the end of the injection hose passes.

[0013] By adopting the above technical solution, during the installation of the glue injection hose, the two bent plates on the support plate are pre-installed on the rotating plate and the connecting plate respectively, and then the glue injection hose is installed in the positioning groove, and at the same time, the end of the glue injection hose is passed through the positioning through hole and arranged above the first annular groove; thereby, the installation and fixation of the glue injection hose is achieved, and when the upper glue hose is rotated and adjusted, the glue injection hose can be adjusted synchronously.

[0014] Optionally, a dovetail slide is fixed on the rotating plate and the connecting plate, and a dovetail slide groove is provided at the end of the bending plate for the dovetail slide to slide into; an elastic clip is provided on the dovetail slide, and a positioning groove is provided on the inner wall of the dovetail slide groove for the elastic clip to be inserted into.

[0015] By adopting the above technical solution, during the installation of the support plate, the dovetail slide is slid into the dovetail slide groove, so that the elastic clip on the dovetail slide is inserted into the corresponding positioning groove, thereby reducing the possibility of the two bending plates being separated from the corresponding rotating plate and the connecting plate in the natural state.

[0016] Optionally, two blocking plates are symmetrically arranged on the side of the support plate away from the support sleeve, and the ends of the two blocking plates close to each other are rotatably connected to the support plate; the blocking plate can be rotatably adjusted and fixed, and the rotating surface of the blocking plate is parallel to the side of the support plate away from the support sleeve, and the blocking plate blocks the upper opening of the positioning groove when it is rotated to a state parallel to the positioning groove.

[0017] By adopting the above technical solution, when the blocking plate rotates to a state parallel to the length direction of the positioning groove, the blocking plate blocks the upper opening of the positioning groove, thereby reducing the possibility of the injection tube in the positioning groove falling out.

[0018] Optionally, cleaning cotton is fixedly provided on the side of the blocking plate facing the supporting plate.

[0019] By adopting the above technical solution, due to the setting of the cleaning cotton on the baffle plate, the cleaning cotton can be used to clean the upper side of the support plate during the rotation of the baffle plate, and the cleaning cotton can also be used to clean impurities attached to the outer surface of the glue injection tube, thereby reducing the difficulty of cleaning the side surface of the support plate and the outer surface of the glue injection tube.

[0020] Optionally, the end ball joint of the blocking plate away from the support plate is provided with a fixing block, and the base is provided with a fixing groove for inserting the fixing block; the blocking plate can be rotated toward the rotating plate after the glue roller rotates away from the support roller, and the fixing block can be inserted into the corresponding fixing groove in this state of the blocking plate.

[0021] By adopting the above technical solution, when the upper glue roller needs to be inspected or maintained, due to the combined arrangement of the fixed block and the fixed groove, the upper glue roller is first rotated along with the rotating plate in the direction away from the support roller, and then the two barrier plates are rotated in the direction close to the rotating plate. At this time, the fixed block can be inserted into the corresponding fixed groove in this state of the barrier plate to support the upper glue roller, which is convenient for subsequent inspection or maintenance of the upper glue roller.

[0022] Optionally, the two blocking plates can be rotated in the direction away from the rotating plate to a side-by-side parallel state, and the two fixed blocks are provided with a clearance gap for inserting the outer periphery of the locking bolt on the side surfaces that are close to each other in this state; a fixing member is provided above the base for fixing the two fixing blocks on the outer periphery of the locking bolt, and an elastic pad that can be tightly pressed against the outer periphery of the locking bolt is fixed on the inner wall of the clearance gap.

[0023] By adopting the above technical solution, when the rubber roller rotates and is fixed above the supporting roller, the two fixing blocks are fixedly sleeved on the outer periphery of the locking bolt using fixing bolts. At this time, the inner side surface of the elastic pad is pressed against the outer peripheral surface of the locking bolt, thereby enhancing the connection stability between the supporting plate and the supporting sleeve.

[0024] Optionally, both fixing blocks are provided with fixing through holes, and the fixing members are fixing bolts penetrating the fixing through holes on the two fixing blocks.

[0025] By adopting the above technical solution, when the two fixing blocks are fixedly sleeved on the outer periphery of the locking bolt, the two blocking plates are first rotated in the direction close to the locking bolt, and then the outer periphery of the locking bolt is placed in the clearance gap, and at the same time, the fixing holes on the two fixing blocks are overlapped, and finally, the fixing bolts are used to penetrate the fixing holes on the two fixing blocks for tightening.

[0026] In summary, this application includes the following beneficial technical effects: When the gluing device is running, the driving part is started in advance to drive the supporting roller and the gluing roller to rotate in opposite directions, and then the edge strip is inserted into the feed gap below the first annular groove, and the opposite sides of the edge strip are respectively pressed against the outer circumference of the supporting roller and the gluing roller. During this process, the glue injection tube injects glue into the first annular groove, and as the gluing roller rotates, the glue is evenly coated on the edge strip, thereby realizing automatic gluing of the edge strip and improving the corresponding gluing efficiency, so that it can meet the needs of mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 It is a partial cross-sectional structural schematic diagram of the locking bolt installation cooperation in the embodiment of the present application; Figure 3 This is a schematic diagram of the structure of the embodiment of the present application that embodies the installation and coordination of the driving member; Figure 4 It is a cross-sectional structural diagram of the embodiment of the present application showing the installation and matching of the driving member; Figure 5 It is a schematic diagram of the exploded structure of the installation distribution of the support plate and the support assembly in the embodiment of the present application; Figure 6 It is a cross-sectional structural diagram of the installation and coordination of the injection hose in the embodiment of the present application; Figure 7 yes Figure 6 A magnified schematic diagram of part A; Figure 8 It is a schematic cross-sectional structure diagram of the installation and coordination of the support plate in the embodiment of the present application; Fig. 9 yes Figure 8 A magnified schematic diagram of part B; Fig.10 This is a schematic diagram of the structure of an embodiment of the present application when a fixing block is inserted into a fixing slot; Fig.11 This is a schematic diagram of the structure of the embodiment of the present application showing the installation and coordination of the fixing block and the blocking plate; Fig.12 It is a partial cross-sectional structural schematic diagram of the fixing bolt installation cooperation embodied in the embodiment of the present application.

[0029] In the figure, 1, base; 11, locking screw hole; 12, fixing groove; 13, rotating shaft; 2, supporting roller; 3, glue roller; 31, fixing convex ring; 311, first ring groove; 4, driving member; 41, driving motor; 42, first gear; 43, second gear; 44, third gear; 45, fourth gear; 5, glue injection tube; 6, supporting assembly; 61, supporting sleeve; 62, rotating plate; 621, dovetail slide; 622, placement groove; 63, connecting plate; 631, Locking through hole; 64, locking bolt; 641, tightening sleeve; 7, support plate; 71, bending plate; 711, dovetail groove; 712, positioning groove; 72, extension plate; 721, positioning groove; 722, positioning through hole; 73, elastic clip; 731, compression spring; 732, arc-shaped protrusion; 8, barrier plate; 81, cleaning cotton; 82, fixing block; 821, clearance notch; 822, elastic pad; 823, fixing through hole; 9, fixing piece; 91, fixing bolt. DETAILED DESCRIPTION

[0030] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0031] Example: Reference Figure 1 A device for gluing a strip along the edge of the strip comprises a base 1, a support roller 2 rotatably arranged on the base 1, a gluing roller 3 located above the support roller 2 is arranged on the base 1, the gluing roller 3 and the support roller 2 are coaxially arranged, wherein a driving member 4 for driving the support roller 2 and the gluing roller 3 to rotate in opposite directions is arranged on the base 1; a fixed convex ring 31 is fixedly arranged on the outer periphery of the end of the gluing roller 3 away from the driving member 4, a first annular groove 311 is opened on the outer periphery of the fixed convex ring 31, a feeding gap for inserting the strip along the edge of the strip is arranged between the fixed convex ring 31 and the support roller 2, and a glue injection pipe 5 located above the first annular groove 311 is arranged above the base 1; When the gluing device is running, the driving member 4 is started in advance to drive the supporting roller 2 and the gluing roller 3 to rotate in opposite directions, and then the edge strip is inserted into the feed gap below the first annular groove 311, and the opposite sides of the edge strip are respectively pressed against the outer circumference of the supporting roller 2 and the gluing roller 3. During this process, the glue injection tube 5 injects glue into the first annular groove 311, and as the gluing roller 3 rotates, the glue is evenly coated on the edge strip.

[0032] Reference Figure 2 and Figure 3 A support assembly 6 for supporting the glue roller 3 is provided above the base 1, wherein the support assembly 6 includes a support sleeve 61 coaxially rotatably connected to the glue roller 3, wherein a relative rotating plate 62 and a connecting plate 63 are integrally formed on the outer periphery of the support sleeve 61, wherein the end of the rotating plate 62 is rotatably connected to the upper side of the base 1 through a rotating shaft 13; A locking bolt 64 is provided above the base 1, a locking through hole 631 is provided on the connecting plate 63 for the locking bolt 64 to pass through, a threaded sleeve 641 is provided on the outer periphery of the locking bolt 64 and is located on opposite sides of the connecting plate 63, the spacing between the fastening sleeve 641 and the connecting plate 63 is adjustable, there is a gap between the locking bolt 64 and the locking through hole 631, and a locking screw hole 11 is provided on the upper side of the base 1 for the locking bolt 64 to be screwed in; Since there is a gap between the locking bolt 64 and the locking through hole 631, the installation angle between the locking bolt 64 and the connecting plate 63 can be adjusted appropriately. Therefore, the user can adjust the spacing size of the feed gap by adjusting the depth of the locking bolt 64 screwed into the locking screw hole 11.

[0033] Reference Figure 3 and Figure 4The driving member 4 includes a first gear 42 rotatably arranged on the side of the base 1 and a driving motor 41 fixedly arranged on the side of the base 1. The driving motor 41 drives the first gear 42 to rotate through a pulley; a second gear 43 meshing with the first gear 42 is coaxially fixedly arranged at one end of the supporting roller 2, a third gear 44 meshing with the first gear 42 is fixedly arranged at the end of the rotating shaft 13, and a fourth gear 45 meshing with the third gear 44 is fixedly arranged at the end of the gluing roller 3; when the driving motor 41 is running, the reverse rotation of the supporting roller 2 and the gluing roller 3 is finally realized through the meshing setting of the corresponding gears.

[0034] Reference Figure 5 and Figure 6 A support plate 7 is provided on the outside of the support sleeve 61, wherein two bending plates 71 are vertically fixed at the two ends of the support plate 7 and are respectively connected and fixed with the rotating plate 62 and the connecting plate 63; extension plates 72 whose length direction is parallel to the length direction of the support roller 2 are fixed on the opposite side surfaces of the support plate 7, and a positioning groove 721 for the injection hose 5 to be inserted and fixed is provided on the side of the extension plate 72 away from the support sleeve 61, and a positioning through hole 722 is provided on the extension plate 72, which is located above the first annular groove 311 and for the end of the injection hose 5 to pass through; the installation and fixation of the injection hose 5 is realized, and when the upper hose is rotated and adjusted, the injection hose 5 is adjusted synchronously.

[0035] Reference Figure 5 , Figure 6 and Figure 7 Two blocking plates 8 are symmetrically arranged on the side of the support plate 7 away from the support sleeve 61, and the ends of the two blocking plates 8 close to each other are rotatably connected to the support plate 7, and a cleaning cotton 81 is arranged on the side of the blocking plate 8 facing the support plate 7; The blocking plate 8 can be rotated, adjusted and fixed, wherein the rotating surface of the blocking plate 8 is parallel to the side of the support plate 7 away from the support sleeve 61. When the blocking plate 8 is rotated to a state parallel to the positioning groove 721, the upper opening of the positioning groove 721 is blocked, thereby reducing the possibility of the injection tube 5 in the positioning groove 721 falling out, and during the rotation of the blocking plate 8, the cleaning cotton 81 can be used to clean the upper side of the support plate 7.

[0036] Reference Figure 8 and Fig. 9The rotating plate 62 and the connecting plate 63 are both integrally formed with a dovetail slide bar 621, and the end of the bending plate 71 is provided with a dovetail slide groove 711 for the dovetail slide bar 621 to slide into; the dovetail slide bar 621 is provided with an elastic clamping member 73, wherein the elastic clamping member 73 includes a compression spring 731 and an arc-shaped protrusion 732, and the dovetail slide bar 621 is provided with a placement groove 622 for the compression spring 731 and the arc-shaped protrusion 732 to be placed, and the compression spring 731 is connected to the arc-shaped protrusion One side of the block 732 is squeezed so that one side of the arc-shaped protrusion 732 protrudes out of the placement groove 622. The protruding part of the arc-shaped protrusion 732 is an arc surface, and the arc length corresponding to the arc surface is a minor arc. A positioning groove 712 is opened on the inner wall of the dovetail slide groove 711; when the bending part is installed and fixed, the dovetail slide bar 621 is slid and inserted into the dovetail slide groove 711, so that the elastic clip 73 on the dovetail slide bar 621 is inserted into the corresponding positioning groove 712.

[0037] Reference Fig.10 The end ball joint of the blocking plate 8 away from the supporting plate 7 is provided with a fixing block 82, and the base 1 is provided with a fixing groove 12 for inserting the fixing block 82; when it is necessary to inspect or maintain the upper glue roller 3, the upper glue roller 3 is first rotated to a vertical state along with the rotating plate 62 in a direction away from the supporting roller 2, and then the two blocking plates 8 are rotated in a direction close to the rotating plate 62. At this time, the fixing block 82 can be inserted into the corresponding fixing groove 12 in this state of the blocking plate 8 (the size of the fixing groove 12 is slightly larger than the size of the fixing block 82, so that it can be rotated and inserted), thereby supporting the upper glue roller 3 and facilitating the subsequent inspection or maintenance of the upper glue roller 3.

[0038] Reference Fig.11 and Fig.12 A clearance notch 821 is provided on the fixed block 82, and an elastic pad 822 made of rubber is fixed on the inner wall of the clearance notch 821; when the glue roller 3 is rotated and fixed above the supporting roller 2, the two blocking plates 8 can be rotated away from the rotating plate 62 to a state of being parallel side by side, and the clearance notches 821 on the two fixed blocks 82 can be brought close to each other; A fixing through hole 823 is provided on the two fixing blocks 82, and a fixing part 9 is provided above the base 1. The fixing part 9 is a fixing bolt 91 that passes through the fixing through holes 823 on the two fixing blocks 82; when the rubber roller 3 is rotated and fixed above the supporting roller 2, the fixing bolts 91 are used to fix the two fixing blocks 82 on the outer periphery of the locking bolt 64. At this time, the inner side surface of the elastic pad 822 is pressed against the outer peripheral surface of the locking bolt 64, thereby enhancing the connection stability between the support plate 7 and the supporting sleeve 61.

[0039] The implementation principle of the embodiment of the present application is: When the gluing device is in operation, the gluing roller 3 is rotated and adjusted in advance and fixed above the supporting roller 2, and then the driving member 4 is started to drive the supporting roller 2 and the gluing roller 3 to rotate in opposite directions, and then the welt is inserted into the feeding gap below the first annular groove 311, and the two opposite sides of the welt are respectively pressed against the outer circumferences of the supporting roller 2 and the gluing roller 3. During this process, the glue injection tube 5 injects glue into the first annular groove 311, and as the gluing roller 3 rotates, the glue is evenly coated on the welt; When the gluing device is in operation, the blocking plate 8 can be rotated and adjusted to a state where the positioning groove 721 is blocked, or the blocking plate 8 can be rotated in a direction away from the rotating plate 62 to a parallel state. The two fixing blocks 82 are fixedly sleeved on the outer periphery of the locking bolt 64 using fixing bolts 91 to enhance the connection stability between the support plate 7 and the support sleeve 61 in this state.

[0040] When the upper glue roller 3 needs to be inspected and repaired, the upper glue roller 3 is first rotated along the rotating plate 62 in the direction away from the support roller 2 to a vertical state, and then the two blocking plates 8 are rotated in the direction close to the rotating plate 62. At this time, the fixed block 82 can be inserted into the corresponding fixed groove 12 in this state of the blocking plate 8 to support the upper glue roller 3, which is convenient for the subsequent inspection or maintenance of the upper glue roller 3.

[0041] Unless otherwise defined, the terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The "first", "second", "third" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and other similar words do not indicate a quantitative limit, but indicate that there is at least one. "Including" or "comprising" and other similar words mean that the elements or objects appearing in front of "including" or "comprising" cover the elements or objects listed after "including" or "comprising" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0042] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A gluing device for welts, characterized in that: The invention comprises a base (1), a supporting roller (2) rotatably arranged on the base (1), a gluing roller (3) located above the supporting roller (2) being arranged on the base (1), the gluing roller (3) and the supporting roller (2) being arranged coaxially, and a driving member (4) for driving the supporting roller (2) and the gluing roller (3) to rotate in opposite directions being arranged on the base (1); A fixed convex ring (31) is fixedly provided on the outer periphery of the end of the glue-applying roller (3) away from the driving member (4); a first annular groove (311) is provided on the outer periphery of the fixed convex ring (31); a feeding gap for inserting the edge strip is provided between the fixed convex ring (31) and the supporting roller (2); and a glue injection tube (5) located above the first annular groove (311) is provided above the base (1).

2. The welt gluing device according to claim 1, characterized in that: A support sleeve (61) is provided above the base (1) and is coaxially rotatably connected to the glue-applying roller (3); a rotating plate (62) and a connecting plate (63) are fixedly provided on the outer periphery of the support sleeve (61) to face each other; and an end of the rotating plate (62) is rotatably connected to the upper side of the base (1) via a rotating shaft (13); A locking bolt (64) is provided above the base (1); a locking through hole (631) for the locking bolt (64) to pass through is opened on the connecting plate (63); a tightening sleeve (641) is threadedly sleeved on the outer periphery of the locking bolt (64) and located on opposite sides of the connecting plate (63); a gap exists between the locking bolt (64) and the locking through hole (631); and a locking screw hole (11) for the locking bolt (64) to be screwed into is provided on the upper side surface of the base (1).

3. The welt gluing device according to claim 2, characterized in that: The driving member (4) comprises a first gear (42) rotatably arranged on the side of the base (1), and a driving motor (41) fixedly arranged on the side of the base (1) and driving the first gear (42) to rotate; A second gear (43) meshing with the first gear (42) is coaxially fixed to one end of the support roller (2), a third gear (44) meshing with the first gear (42) is fixed to the end of the rotating shaft (13), and a fourth gear (45) meshing with the third gear (44) is fixed to the end of the glue roller (3).

4. The welt gluing device according to claim 2, characterized in that: A support plate (7) is provided outside the support sleeve (61), and two bending plates (71) are vertically fixed at the two ends of the support plate (7) and are detachably connected to the rotating plate (62) and the connecting plate (63) respectively; Extension plates (72) are fixedly provided on opposite side surfaces of the support plate (7) and are parallel to the length direction of the support roller (2). A positioning groove (721) for the injection hose (5) to be inserted and fixed is provided on the side of the extension plate (72) away from the support sleeve (61). A positioning through hole (722) is provided on the extension plate (72) and is located above the first annular groove (311) and is passed through by the end of the injection hose (5).

5. The welt gluing device according to claim 4, characterized in that: The rotating plate (62) and the connecting plate (63) are both fixedly provided with a dovetail slide bar (621), and the end of the bending plate (71) is provided with a dovetail slide groove (711) for the dovetail slide bar (621) to slide into; The dovetail slide bar (621) is provided with an elastic clamping piece (73), and the inner wall of the dovetail slide groove (711) is provided with a positioning groove (712) for the elastic clamping piece (73) to be clamped into.

6. The welt gluing device according to claim 4, characterized in that: Two blocking plates (8) are symmetrically arranged on the side of the support plate (7) away from the support sleeve (61), and the ends of the two blocking plates (8) close to each other are rotatably connected to the support plate (7); The blocking plate (8) can be rotated, adjusted and fixed, and the rotation surface of the blocking plate (8) is parallel to the side surface of the support plate (7) away from the support sleeve (61), and the blocking plate (8) blocks the upper opening of the positioning groove (721) when it is rotated to a state parallel to the positioning groove (721).

7. The welt gluing device according to claim 6, characterized in that: Cleaning cotton (81) is fixedly arranged on the side of the baffle plate (8) facing the support plate (7).

8. The welt gluing device according to claim 6, characterized in that: The end of the blocking plate (8) away from the supporting plate (7) is spherically jointed with a fixing block (82), and the base (1) is provided with a fixing groove (12) for inserting the fixing block (82); The blocking plate (8) can be rotated in a direction close to the rotating plate (62) after the glue roller (3) is rotated in a direction away from the supporting roller (2), and the fixing block (82) can be inserted into the corresponding fixing groove (12) in this state of the blocking plate (8).

9. The welt gluing device according to claim 8, characterized in that: The two blocking plates (8) can be rotated in a direction away from the rotating plate (62) to a state where they are parallel to each other, and the two fixing blocks (82) are provided with a clearance notch (821) on the side surfaces close to each other in this state for the outer periphery of the locking bolt (64) to be inserted; A fixing member (9) is provided above the base (1) for fixing two fixing blocks (82) on the outer periphery of the locking bolt (64), and an elastic pad (822) capable of pressing against the outer periphery of the locking bolt (64) is fixed on the inner wall of the clearance notch (821).

10. The welt gluing device according to claim 9, characterized in that: The two fixing blocks (82) are both provided with fixing through holes (823), and the fixing member (9) is a fixing bolt (91) that passes through the fixing through holes (823) on the two fixing blocks (82).

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