Automatic glue dispenser for shoe soles

Abstract

The utility model discloses an automatic glue dispenser for soles. The automatic glue dispenser comprises a workbench, a three-axis moving device, a rotary clamping mechanism, a side pressing mechanism, a glue supply machine and a PLC (Programmable Logic Controller), according to the utility model, through synchronous linkage control of the three-axis moving device and the rotary clamping mechanism and in cooperation with a path planning algorithm of a PLC based on a three-dimensional model, continuous and accurate glue dispensing of complex edge contours such as arc-shaped and wave-shaped soles is realized, and the problems of glue breaking and glue overflowing caused by insufficient degree of freedom of traditional glue dispensing equipment are solved; automatic centering positioning can be achieved through a floating supporting air cylinder of the rotary clamping mechanism, and the model changing time is shortened; the glue supply machine associates the three-dimensional model data and the rotation angle of the shoe sole through the PLC, the opening degree of the electromagnetic valve is adjusted in real time, dynamic optimization of the glue amount is achieved, and glue loss is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to shoemaking technical field, especially a sole automatic dispensing machine. BACKGROUND

[0002] In shoemaking processing link, there is a process step for the sole glue brushing to the middle bottom and the big bottom bonding, now sole glue coating adopts manual coating, needs the worker to use the flat glue brush to dip the shoe glue one side, one side on the sole coating glue.

[0003] However this procedure is time -consuming and labor -intensive, and there are many defects: 1. the glue coating track is easy to deviate in the glue coating process, the glue coating position accuracy is poor, and the glue coating quality is not high;2. the economic efficiency of glue is poor, the glue amount of coating cannot be accurately controlled, and the glue is wasted more in the glue coating process;3. the sole is not well clamped and fixed, and the production efficiency is low. Therefore, an automatic dispensing device for the sole is urgently needed. UTILITY MODEL CONTENT

[0004] The utility model solves the technical problem of overcoming the defects of prior art, and provides a sole automatic dispensing machine.

[0005] In order to solve the above technical problem, the utility model provides the following technical scheme:

[0006] The utility model relates to a sole automatic dispensing machine, which comprises a workbench and a dispensing mechanism, wherein the dispensing mechanism comprises: a three-axis moving device fixed to the center of the workbench, used for fixing and controlling the dispensing position of a glue gun;A rotary clamping mechanism is fixed to one side of the three-axis moving device, used for clamping and fixing the sole and supporting its rotation;A side pressing mechanism is symmetrically arranged along the two sides of the rotary clamping mechanism, which presses the side surface of the sole by synchronous horizontal movement, realizes automatic center positioning;A PLC controller and a glue supply machine for quantitatively supplying glue to the glue gun are further arranged above the workbench, the PLC controller is connected with the three-axis moving device, rotary clamping mechanism, side pressing mechanism and glue supply machine respectively, the rotation of the sole and the movement of the three-axis dispensing are controlled synchronously, and precision dispensing of complex contour is realized.

[0007] As a preferred technical scheme of the utility model, the three-axis moving device comprises: a glue gun clamping jig, the side of which is fixed on the sliding table of the Z-axis linear guide rail through bolts, and is used for fixing and clamping the glue gun; a belt clamping block, one side of which is connected with the Z-axis linear guide rail through bolts, and the other side of which is fixedly connected with the Z-axis synchronous belt, and is used for driving the Z-axis linear guide rail to move up and down; a Z-axis servo motor, the bottom of which is fixed on the Z-axis fixed seat, and the output end of which is connected with the Z-axis synchronous belt through a belt pulley; the bottom of the Z-axis fixed seat is fixed with two mutually orthogonal linear guide rails, the two linear guide rails respectively extend along the X-axis and Y-axis directions, and are connected with the bottom of the Z-axis fixed seat through sliding blocks, forming an orthogonal guide structure, and being used for guiding the movement of the Z-axis fixed seat along the X-axis and Y-axis directions; an X-axis servo motor, the output end of which is connected with the fixed block on the X-axis linear guide rail through a synchronous belt, and being used for driving the Z-axis fixed seat to move along the X-axis; a Y-axis servo motor, the output end of which is connected with the fixed block on the Y-axis linear guide rail through a synchronous belt, and being used for driving the Z-axis fixed seat to move along the Y-axis; the three-axis moving device is controlled by three axes in cooperation, and is used for dispensing along the complex path of the shoe sole; the PLC controller controls the linkage of the X-axis, Y-axis and Z-axis servo motors through a preprogrammed trajectory algorithm, so that the glue gun moves along the three-dimensional profile of the shoe sole.

[0008] As a preferred technical scheme of the utility model, the rotating clamping mechanism comprises a rotating clamping jig, the two sides of which are provided with rotating clamping blocks which can be horizontally moved by a floating support cylinder, the shoe sole can be clamped between the two rotating clamping blocks and synchronously rotated with them; the floating support cylinder is provided with a built-in pressure sensor, the clamping force of the rotating clamping block can be dynamically adjusted according to the length of the shoe sole, and the constant pressure can be maintained during the rotating process; a shoe mold is fixed on the rotating clamping jig through bolts, and is used for mounting the shoe sole; a clamping rotating shaft is fixedly connected with the bottom of the rotating clamping jig through bolts, and is fixed on the rotating base through a rolling bearing and a bearing seat; a rotating drive motor, the base of which is fixed on the side surface of the rotating base through a connecting plate, and the output end of which is connected with the clamping rotating shaft through a coupling, so that the angle is accurately controlled, and the rotating clamping jig is driven to rotate.

[0009] As a preferred technical scheme of the utility model, the side pressure mechanism comprises a lateral clamping jig, the bottom of which is fixed on the sliding table cylinder through bolts, the bottom of the sliding table cylinder is fixed on the rotating base through bolts, and is used for driving the lateral clamping jig to move horizontally; the surface of the lateral clamping jig is fixedly connected with an elastic buffer plate, the buffer plate is made of silica gel material, and is used for clamping the shoe sole and adjusting the position of the shoe sole to the center.

[0010] As a preferred technical solution of this utility model, the glue supply machine is fixed on the workbench by a bracket and connected to the PLC controller through a solenoid valve. The PLC controller calculates the amount of glue supplied to the glue gun according to the length, width and rotation angle of the shoe sole, and controls the glue flow rate by the opening of the solenoid valve.

[0011] As a preferred technical solution of this utility model, the PLC controller is electrically connected to the Z-axis servo motor, X-axis servo motor and Y-axis servo motor, and controls the dispensing trajectory of the glue gun based on the three-dimensional model of the shoe mold. The three-dimensional model is stored in the storage module of the PLC controller.

[0012] As a preferred technical solution of this utility model, the surface of the buffer plate is provided with anti-slip texture to increase the friction with the sole of the shoe, and it is connected to the lateral clamping fixture by a detachable buckle, which makes it easy to replace the buffer plate with different thicknesses.

[0013] As a preferred technical solution of this utility model, a flow sensor is provided at the outlet of the glue gun to monitor the glue volume in real time and feed it back to the PLC controller for dynamic correction.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. Through the synchronous linkage control of the three-axis moving device and the rotating clamping mechanism, combined with the path planning algorithm of PLC based on the three-dimensional model, continuous and precise glue dispensing of complex edge contours such as arc and wave on the sole is realized, which solves the problems of glue breakage and glue overflow caused by insufficient degrees of freedom of traditional glue dispensing equipment.

[0016] 2. The clamping force can be dynamically adjusted by the floating support cylinder of the rotating clamping mechanism. In addition, the automatic centering and positioning of the shoe sole is achieved by the symmetrical sliding cylinder of the pressure measuring mechanism to drive the buffer plate, which reduces the changeover time and improves the clamping efficiency.

[0017] 3. The glue supply machine uses a PLC to connect with the 3D model data of the shoe sole and the rotation angle, and adjusts the opening of the solenoid valve in real time to achieve dynamic optimization of glue quantity and reduce glue waste. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is the front view of this utility model;

[0021] Figure 3 This is a side view of the present invention;

[0022] Figure 4 This is a top view of the present invention;

[0023] In the diagram: 1. Worktable; 2. Three-axis moving device; 3. Rotary clamping mechanism; 4. Side pressing mechanism; 5. PLC controller; 6. Glue dispenser; 7. Glue gun; 21. Glue gun clamping fixture; 22. Z-axis linear guide; 23. Belt clamping block; 24. Z-axis synchronous belt; 25. Z-axis servo motor; 26. Z-axis fixed seat; 27. X-axis servo motor; 28. X-axis linear guide; 29. ​​Y-axis servo motor; 30. Y-axis linear guide; 31. Rotary clamping fixture; 32. Floating support cylinder; 33. Rotary clamping block; 34. Shoe mold; 35. Clamping rotation axis; 36. Rotary base; 37. Rotary drive motor; 41. Side clamping fixture; 42. Slide cylinder; 43. Buffer plate. Detailed Implementation

[0024] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0025] In the attached diagram, all identical reference numerals refer to the same components.

[0026] like Figures 1-4 As shown, this utility model provides an automatic shoe sole dispensing machine, including a worktable 1 and a dispensing mechanism. The dispensing mechanism includes: a three-axis moving device 2, fixed in the center of the worktable 1, used to fix and control the dispensing position of the glue gun 7; a rotating clamping mechanism 3, fixed on one side of the three-axis moving device 2, used to clamp and fix the shoe sole and support its rotation; a side pressing mechanism 4, symmetrically arranged on both sides of the rotating clamping mechanism 3, which presses the side of the shoe sole by synchronous horizontal movement to achieve automatic centering positioning; a PLC controller 5 and a glue supply machine 6 for quantitatively supplying glue to the glue gun 7 are also provided above the worktable 1. The PLC controller 5 is connected to the three-axis moving device 2, the rotating clamping mechanism 3, the side pressing mechanism 4 and the glue supply machine 6 respectively, and achieves precise dispensing of complex contours by synchronously controlling the rotation of the shoe sole and the movement of the three-axis dispensing.

[0027] The method of using this utility model is as follows:

[0028] 1. The slide cylinder 42 pushes the lateral clamping fixture 41 to move horizontally. After the silicone buffer plate 43 contacts the side of the sole, it continues to advance by 5mm to ensure that the center line of the sole coincides with the rotation axis and the offset is <0.3mm. The floating support cylinder 32 drives the two rotating clamping blocks 33 to move towards each other and adaptively adjusts the clamping force according to the length of the sole to fix the position of the sole.

[0029] 2. The PLC controller 5 calls the pre-stored 3D model of the shoe sole to generate the glue dispensing trajectory; the glue dispenser 6 starts, and the glue flow rate is adjusted by the solenoid valve. The X-axis servo motor 27 drives the Z-axis fixed base 26 to move along the X-axis linear guide 28, and the Y-axis servo motor 29 drives it to move along the Y-axis linear guide 30. The Z-axis servo motor 25 drives the glue gun 7 to move vertically up and down through the synchronous belt 24; the rotary drive motor 37 drives the shoe sole to rotate through the clamping rotary shaft 35. The PLC adjusts the rotation angle in real time according to the position of the glue gun to ensure that the glue gun is always perpendicular to the normal direction of the shoe sole.

[0030] 3. After the glue dispensing is completed, the side pressure mechanism 4 and the rotating clamping mechanism 3 automatically reset, and the operator removes the shoe sole.

[0031] For further details, please refer to the appendix. Figure 3 The three-axis moving device 2 includes: a glue gun clamping fixture 21, which is bolted to the slide of the Z-axis linear guide 22 for fixing and clamping the glue gun 7; a belt clamping block 23, which is bolted to the Z-axis linear guide 22 on one side and fixedly connected to the Z-axis synchronous belt 24 on the other side for driving the Z-axis linear guide 22 to move up and down; a Z-axis servo motor 25, which is fixed to the bottom of the Z-axis mounting base 26 and its output end is connected to the Z-axis synchronous belt 24 through a pulley; and two mutually orthogonal linear guides are fixed to the bottom of the Z-axis mounting base 26, which extend along the X-axis and Y-axis directions respectively and are connected to the Z-axis synchronous belt 24 through a slider. The Z-axis mounting base 26 is connected to the bottom and is used for guiding its movement along the X and Y directions; the X-axis servo motor 27, whose output end is connected to the fixed block on the X-axis linear guide 28 via a synchronous belt, is used to drive the Z-axis mounting base 26 to move along the X-axis; the Y-axis servo motor 29, whose output end is connected to the fixed block on the Y-axis linear guide 30 via a synchronous belt, is used to drive the Z-axis mounting base 26 to move along the Y-axis; the three-axis moving device 2 is used for dispensing glue along the complex path of the shoe sole through three-axis coordinated control; the PLC controller 5 controls the linkage of the X-axis, Y-axis and Z-axis servo motors through a pre-programmed trajectory algorithm, so that the glue gun 7 moves along the three-dimensional contour of the shoe sole.

[0032] In this embodiment, the Z-axis linear guide 22 is a guide with a stroke of 300mm. The glue gun clamping fixture 21 is fixed to the guide rail slider by four M6 bolts. After the glue gun 7 is inserted into the fixture slot, it is fixed by a locking screw. The Z-axis synchronous belt 24 is 3-6mm wide, and its tension is adjusted by a tensioning wheel. The X-axis linear guide 28 and the Y-axis linear guide 30 are arranged orthogonally, and the repeatability of the guide rails is ±0.02mm. The bottom of the Z-axis fixing seat 26 is connected to the X / Y guide rails through a slider, with a repeatability of ±0.02mm, which allows the glue gun 7 to move with high precision according to a preset trajectory.

[0033] For further details, please refer to the appendix. Figure 2The rotary clamping mechanism 3 includes a rotary clamping fixture 31, on both sides of which are rotary clamping blocks 33 that can move horizontally driven by a floating support cylinder 32. The shoe sole can be clamped between the two rotary clamping blocks 33 and rotate synchronously with them. The floating support cylinder 32 has a built-in pressure sensor that can dynamically adjust the clamping force of the rotary clamping blocks 33 according to the length of the shoe sole and maintain a constant pressure during rotation. The shoe mold 34 is fixed to the rotary clamping fixture 31 by bolts and is used to install the shoe sole. The clamping rotary shaft 35 is fixed to the bottom of the rotary clamping fixture 31 by bolts and is fixed to the rotary base 36 by rolling bearings and bearing seats. The rotary drive motor 37 has its base fixed to the side of the rotary base 36 by a connecting plate and its output end is connected to the clamping rotary shaft 35 by a coupling to achieve precise angle control and drive the rotary clamping fixture 31 to rotate.

[0034] In this embodiment, the floating support cylinder 32 is an SMC floating support cylinder with a built-in magnetic coupling position sensor to detect the displacement of the clamping block 33; a buffer valve is provided at the tail end of the cylinder to prevent clamping impact; the shoe mold 34 is made of aluminum alloy with an anodized surface treatment, and is connected to the rotating clamping fixture 31 through a quick-change interface, with a replacement time of less than 30 seconds, saving changeover time.

[0035] For further details, please refer to the appendix. Figure 3 The side pressure mechanism 4 includes a side clamping fixture 41, the bottom of which is fixed to the slide cylinder 42 by bolts. The bottom of the slide cylinder 42 is fixed to the rotating base 36 by bolts, and is used to drive the side clamping fixture 41 to move horizontally. An elastic buffer plate 43 is fixedly connected to the surface of the side clamping fixture 41. The buffer plate 43 is made of silicone and is used to clamp the shoe sole and adjust its position to be centered.

[0036] In this embodiment, the buffer plate 43 has a thickness of 8mm, a Shore hardness of A50, and a diamond-shaped anti-slip texture with a depth of 0.5mm. It is connected to the lateral clamping fixture 41 via Velcro, and can be disassembled for cleaning. The silicone buffer plate works in conjunction with the floating clamping mechanism to apply less than 5kPa of pressure to the surface of the carbon fiber sole, ensuring zero-damage clamping.

[0037] Furthermore, the glue dispenser 6 is fixed to the workbench 1 by a bracket and connected to the PLC controller 5 via a solenoid valve. In this embodiment, the PLC controller 5 sets the glue supply amount for each position on the sole according to the three-dimensional model of the glue-dispensing shoe mold 34, and controls the glue flow rate through the opening of the solenoid valve, thereby accurately controlling the amount of glue used and ultimately increasing the glue utilization rate to 92%.

[0038] In this embodiment, the PLC controller 5 is further electrically connected to the Z-axis servo motor 25, the X-axis servo motor 27 and the Y-axis servo motor 29, and controls the dispensing trajectory of the glue gun 7 based on the three-dimensional model of the shoe mold 34. The three-dimensional model is stored in the storage module of the PLC controller 5.

[0039] In this embodiment, the dispensing trajectory of the glue gun 7 is pre-set and stored in the storage module of the PLC controller 5 based on the three-dimensional model of the shoe sole to be glued. During dispensing, the glue gun 7 moves according to the trajectory set by the PLC program, adapting to the complex shoe sole contour with a precision of 0.1mm, thus improving the quality of glue dispensing.

[0040] Furthermore, the surface of the buffer plate 43 is provided with anti-slip texture to increase friction with the sole of the shoe, and it is connected to the lateral clamping fixture 41 by a detachable buckle, making it easy to replace buffer plates of different thicknesses.

[0041] Furthermore, a flow sensor is installed at the outlet of the glue gun 7 to monitor the glue volume in real time and feed it back to the PLC controller 5 for dynamic correction. When the flow sensor detects that the glue volume is lower than the set value by 50% for 3 seconds, the PLC pauses the equipment and triggers an audible and visual alarm to prevent the glue gun from clogging.

[0042] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic shoe sole dispensing machine, comprising a worktable (1) and a dispensing mechanism, characterized in that, The dispensing mechanism includes: a three-axis moving device (2), fixed in the center of the workbench (1), used to fix and control the dispensing position of the glue gun (7); a rotating clamping mechanism (3), fixed on one side of the three-axis moving device (2), used to clamp and fix the shoe sole and support its rotation; a side pressing mechanism (4), symmetrically arranged on both sides of the rotating clamping mechanism (3), which presses the side of the shoe sole by synchronous horizontal movement to achieve automatic centering positioning; a PLC controller (5) and a glue supply machine (6) for quantitatively supplying glue to the glue gun (7) are also provided above the workbench (1). The PLC controller (5) is connected to the three-axis moving device (2), the rotating clamping mechanism (3), the side pressing mechanism (4) and the glue supply machine (6) respectively. By synchronously controlling the rotation of the shoe sole and the movement of the three-axis dispensing, the precision dispensing of complex contours is achieved.

2. The automatic dispensing machine for shoe soles according to claim 1, characterized in that, The three-axis moving device (2) includes: a glue gun clamping fixture (21), which is fixed to the slide of the Z-axis linear guide (22) by bolts on its side, for fixing and clamping the glue gun (7); a belt clamping block (23), which is connected to the Z-axis linear guide (22) by bolts on one side and fixed to the Z-axis synchronous belt (24) on the other side, for driving the Z-axis linear guide (22) to move up and down; a Z-axis servo motor (25), which is fixed to the Z-axis fixed seat (26) at its bottom and its output end is connected to the Z-axis synchronous belt (24) through a pulley; and two mutually orthogonal linear guides are fixed at the bottom of the Z-axis fixed seat (26), which extend along the X-axis and Y-axis directions respectively and are connected to the Z-axis through a slider. The bottom of the fixed seat (26) is connected to form an orthogonal guide structure for guiding its movement along the X and Y directions; the X-axis servo motor (27) has its output end connected to the fixed block on the X-axis linear guide (28) via a synchronous belt, for driving the Z-axis fixed seat (26) to move along the X-axis; the Y-axis servo motor (29) has its output end connected to the fixed block on the Y-axis linear guide (30) via a synchronous belt, for driving the Z-axis fixed seat (26) to move along the Y-axis; the three-axis moving device (2) is used for dispensing glue along the complex path of the shoe sole through three-axis coordinated control; the PLC controller (5) controls the linkage of the X-axis, Y-axis and Z-axis servo motors through a pre-programmed trajectory algorithm, so that the glue gun (7) moves along the three-dimensional contour of the shoe sole.

3. The automatic dispensing machine for shoe soles according to claim 1, characterized in that, The rotating clamping mechanism (3) includes a rotating clamping fixture (31), which has rotating clamping blocks (33) on both sides that are driven by a floating support cylinder (32) to move horizontally. The sole can be clamped between the two rotating clamping blocks (33) and rotate synchronously with them. The floating support cylinder (32) has a built-in pressure sensor that can dynamically adjust the clamping force of the rotating clamping blocks (33) according to the length of the sole and maintain a constant pressure during rotation. The shoe mold (34) is fixed to the rotating clamping fixture (31) by bolts and is used to install the sole. The clamping rotating shaft (35) is fixed to the bottom of the rotating clamping fixture (31) by bolts and is fixed to the rotating base (36) by rolling bearings and bearing seats. The rotating drive motor (37) has its base fixed to the side of the rotating base (36) by a connecting plate and its output end is connected to the clamping rotating shaft (35) by a coupling to achieve precise angle control and drive the rotating clamping fixture (31) to rotate.

4. An automatic shoe sole dispensing machine according to claim 3, characterized in that, The side-pressing mechanism (4) includes a side-clamping fixture (41), the bottom of which is fixed to the slide cylinder (42) by bolts. The bottom of the slide cylinder (42) is fixed to the rotating base (36) by bolts, which is used to drive the side-clamping fixture (41) to move horizontally. The side-clamping fixture (41) has an elastic buffer plate (43) fixedly connected to its surface. The buffer plate (43) is made of silicone and is used to clamp the sole of the shoe and adjust its position to be centered.

5. An automatic dispensing machine for shoe soles according to claim 1, characterized in that, The glue dispenser (6) is fixed on the workbench (1) by a bracket and connected to the PLC controller (5) by a solenoid valve. The PLC controller (5) calculates the amount of glue to be supplied to the glue gun (7) according to the length, width and rotation angle of the shoe sole, and controls the glue flow rate by the opening of the solenoid valve.

6. An automatic dispensing machine for shoe soles according to claim 2, characterized in that, The PLC controller (5) is electrically connected to the Z-axis servo motor (25), X-axis servo motor (27) and Y-axis servo motor (29), and controls the dispensing trajectory of the glue gun (7) based on the three-dimensional model of the shoe mold (34). The three-dimensional model is stored in the storage module of the PLC controller (5).

7. An automatic dispensing machine for shoe soles according to claim 4, characterized in that, The surface of the buffer plate (43) is provided with anti-slip texture to increase the friction with the sole of the shoe, and it is connected to the lateral clamping fixture (41) by a detachable buckle, which makes it easy to replace the buffer plate with different thicknesses.

8. An automatic dispensing machine for shoe soles according to claim 5, characterized in that, The glue gun (7) is equipped with a flow sensor at its outlet, which is used to monitor the glue volume in real time and feed it back to the PLC controller (5) for dynamic correction.

Images