Automatic gluing equipment and assembly line for the bottom of a shoe last and upper combination

Abstract

The present invention discloses an automatic gluing device for the bottom of a shoe last and upper combination. The device includes a gluing device for causing glue to adhere to the bottom of the combination, and a fixed base for fixing the bottom of the combination with the bottom facing upward on the fixed base. The fixed base or the gluing device can rotate, and a portion of the gluing device is in dynamic contact with the outer contour of the combination. In this way, the gluing device can move relative to the outer contour of the combination and cause glue to adhere to a target area of the bottom of the combination. The present invention can achieve automatic gluing of the bottom of a shoe last and upper combination.

Description

Technical Field

[0001] The present invention relates to an automatic gluing device for the bottom of a combination of a shoe last and an upper, and also relates to an assembly line comprising the automatic gluing device. Background Art

[0002] In the shoemaking process, the process of combining the sole and the prefabricated upper is called molding. The main processes include injection molding (molding the sole directly onto the upper by placing the upper into a mold and injecting liquid injection molding), seaming (usually using thread to sew the sole and upper together), and gluing (bonding the sole and upper with adhesive), with gluing being the most commonly used. The gluing process involves securing the last and midsole, then fitting the upper over the outside of the last and midsole. A series of processes, including clamping the fore-, mid-, and back-ends, and shaping, are then performed to form a composite assembly. The bottom edge of the upper extends to the bottom surface of the midsole. During gluing, glue is applied to the corresponding positions on the upper end of the sole and the bottom surface of the composite assembly. After the composite assembly is bonded to the sole, a series of processes, including pressing, hot and cold shaping, complete the shoe. In the prior art, there are a variety of devices that can complete the gluing operation on the upper end surface of the sole, but there are fewer devices for gluing the shoe last and upper surface combination. Summary of the Invention

[0003] The present invention provides an automatic gluing device for the bottom of a shoe last and upper assembly, and also provides an assembly line for such gluing device. The present invention achieves automatic gluing by securing the assembly bottom-up on a fixed base, with a portion of the gluing device in dynamic contact with the assembly. The rotational motion of the fixed base or the gluing device ensures that the gluing device's spraying or coating mechanism always acts within a certain distance along the outer contour of the assembly, thereby achieving automatic gluing.

[0004] To this end, the present invention provides an automatic gluing device for the bottom of a combination of a shoe last and an upper, including a gluing device for causing the glue to adhere to the bottom of the combination, and also including a fixed base for fixing the bottom of the combination sole upward on the fixed base, wherein the fixed base or the gluing device can perform rotational motion, and a part of the gluing device is in dynamic contact with the outer contour of the combination, in such a way that the gluing device can move relative to the outer contour of the combination and cause the glue to adhere to the target area of the bottom of the combination.

[0005] Furthermore, the gluing device includes a support frame, a first elastic telescopic rod and a gluing head, the support frame is connected to the first elastic telescopic rod, the first elastic telescopic rod is connected to the gluing head, the first elastic telescopic rod includes an outer sleeve and an inner telescopic rod, the sleeve is provided with a seating groove, one end of the inner telescopic rod is installed in the seating groove and can move along the seating groove, a spring is provided between the seating groove and the inner telescopic rod, the gluing head includes a horizontally arranged fixing part and a vertically arranged connecting part, a glue spray gun or a glue roller is provided on the fixing part, a limiting plate is fixed on the connecting part, a ball or roller is provided on the limiting plate, and the ball or roller is in contact with the outer contour of the assembly.

[0006] Furthermore, at least two second elastic telescopic rods are provided between the connecting portion and the first elastic telescopic rod, the second elastic telescopic rods are movably connected to the connecting portion, and the fixing portion is perpendicular to the surface of the connecting portion.

[0007] Furthermore, the fixed base can rotate around its own geometric center; or it also includes a track, which is arranged around the fixed base, and the support frame of the gluing device can run along the track.

[0008] Furthermore, the fixed base is provided with a fixing block, and the shoe last is provided with a groove that cooperates with the fixing block; or the fixed base is provided with an inwardly concave accommodating cavity, and the side walls of the accommodating cavity are provided with a plurality of retractable clamping parts, and the clamping parts fix the assembly by clamping the lower part of the assembly.

[0009] Furthermore, the fixed base is provided with an inwardly concave accommodating cavity, the assembly is fixed in the accommodating cavity, a baffle is fixed on the upper glue head, the baffle is used to block glue mist, and an air suction port is provided on the side wall of the accommodating cavity.

[0010] The present invention also discloses an assembly line including the automatic gluing device, which includes a turntable. The automatic gluing device is arranged on the turntable, and the turntable can be rotated by a motor. The gluing device or the fixed base rotates at the same angular velocity as the turntable.

[0011] Furthermore, it includes an assembly line conveyor belt and a robotic arm, wherein the robotic arm is arranged between the conveyor belt and the turntable and is used to transfer the assembly between the conveyor belt and the turntable.

[0012] The beneficial effects of the present invention are:

[0013] (1) The present invention fixes the assembly upside down, and a part of the gluing device is in dynamic contact with the outer contour of the assembly. The gluing device includes a first elastic telescopic rod, and a spring is pressed on the first elastic telescopic rod. The gluing device or the fixed base performs a rotational motion. During the rotational motion, a part of the gluing device moves along the outer contour of the assembly. During the movement, the squeezing effect of the spring causes a part of the gluing device to always be in dynamic contact with the outer contour of the assembly, so that the gluing head moves along the outer contour above the target area for gluing while applying glue, thereby realizing automatic gluing.

[0014] (2) In a specific embodiment of the present invention, the gluing device includes a first elastic telescopic rod, a second elastic telescopic rod and a gluing head, the first elastic telescopic rod is connected to the gluing head, the gluing head includes a horizontally arranged fixed portion and a vertically arranged connecting portion, the fixed portion is provided with a glue spray gun or a glue roller, a fixed limit plate is provided on the connecting portion, at least two second elastic telescopic rods are provided between the connecting portion and the first elastic telescopic rod, the second elastic telescopic rod is movably connected to the connecting portion, the fixed portion is perpendicular to the surface of the connecting portion, the effect of this structure is to make the glue gun or glue roller dynamically perpendicular or nearly perpendicular to the outer contour of the assembly, so that the gluing range of the glue gun or glue roller is adapted to the actual target range, thereby reducing deviation.

[0015] (3) In a specific embodiment of the present invention, a turntable is further included. The rotation speed of the turntable is the same as the rotation speed of the gluing device or the fixed base. When the turntable rotates one circle, the gluing device just circles around the outer contour of the assembly to complete the gluing. The assembly can be transferred manually or mechanically at the same position. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the pipeline;

[0017] Figure 2 It is a top view schematic diagram of the gluing device;

[0018] Figure 3 is a schematic cross-sectional view of the interior of the fixed base;

[0019] Figure 4 Schematic diagram of the limiting piece;

[0020] Figure 5 This is a partial top view of the glue spray head of the glue application device in Example 1;

[0021] Figure 6 is a schematic cross-sectional view of a first elastic telescopic rod and a second elastic telescopic rod;

[0022] Figure 7 Schematic diagram of the rubber roller in Example 2;

[0023] Figure 8 It is a schematic diagram of the clamping part and the movable gluing device;

[0024] Figure 9 Schematic diagram of the baffle;

[0025] Figure 10 Schematic diagram of the gluing area at the bottom of the upper, midsole and last assembly.

[0026] Explanation of reference numerals: 1. Gluing device; 101. Support frame; 1011. Mobile base; 102. First elastic telescopic rod; 1021. Outer sleeve; 1022. Inner telescopic rod; 1023. Spring; 1024. Placement groove; 103. Second elastic telescopic rod; 104. Gluing head; 1041. Fixing part; 1042. Connecting part; 1043. Spray gun; 105. Cylinder; 106. Limiting piece; 1061. Roller; 107, baffle; 108, rubber roller; 109, third elastic telescopic rod; 2, fixed base; 201, fixed block; 202, accommodating chamber; 203, clamping part; 204, rotating shaft; 205, roller; 206, track; 207, air suction port; 3, assembly; 301, upper; 302, midsole; 303, shoe last; 3031, groove; 4, turntable; 5, pipeline; 6, conveyor belt; 7, robotic arm. DETAILED DESCRIPTION

[0027] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0028] Reference Figures 1 to 10As shown, in Example 1, an automatic gluing device for the bottom of a shoe last and upper combination includes a gluing device 1 for making glue adhere to the bottom of the combination 3 and a fixed base 2, the fixed base 2 is used to fix the bottom of the combination 3 upward; the gluing device 1 includes a support frame 101, a first elastic telescopic rod 102 and a gluing head 104, the gluing head 104 includes a glue spray gun 1043, the support frame 101 is used to fix the first elastic telescopic rod 102, the first elastic telescopic rod 102 The outer sleeve 1021 includes an inner telescopic rod 1022, the outer sleeve 1021 is provided with a placement groove 1024, one end of the inner telescopic rod 1022 is installed in the placement groove 1024 and can move along the placement groove 1024, a spring 1023 is installed between the placement groove 1024 and the inner telescopic rod 1022, and the other end of the inner telescopic rod 1022 is connected to the glue head 104; a lifting seat is provided on the support frame 101, and a liquid cylinder or an air cylinder 105 is installed on the lifting seat, and the cylinder 105 or the liquid cylinder is connected to the outer sleeve 1021. The gluing head 104 includes a horizontally arranged fixing portion 1041 and a vertically arranged connecting portion 1042, a glue spray gun 1043 is provided on the fixing portion 1041, a limiting piece 106 is fixed on the connecting portion 1042, and a ball or roller 1061 is provided on the limiting piece 106, and the ball or roller contacts the outer contour of the assembly 3; in this embodiment, a fixing block 201 may be provided on the fixed base 2, and a shoe last 303 of the assembly 3 is provided with a fixing block 2 01, the assembly 3 is fixed by combining the fixing block 201 and the groove 3031. Strong magnets that cooperate with each other may also be provided in the fixing block 201 and the groove 3031. The fixing base 2 may also be provided with an inwardly concave accommodating cavity 202. The side walls of the accommodating cavity 202 are provided with a plurality of retractable clamping portions 203. The clamping portions 203 are driven by a cylinder 105 or a hydraulic cylinder. The clamping portions 203 fix the assembly 3 by clamping the lower portion of the assembly 3. In this embodiment, the fixing base 2 is provided with a rotating shaft 204, which is meshed with a gear and can rotate about its own geometric center under the drive of a motor. The lower surface of the fixing base 2 is provided with a roller 205, which can rotate on the smooth surface of the turntable 4. The support frame 101 is fixed to the turntable 4. The glue barrel is connected to the glue application device 1 via a pipe 5. The glue is supplied pneumatically by providing a pneumatic diaphragm pump. Its working principle is as follows: the inverted assembly 3 is placed on the fixed base 2 manually or by a transfer device, the groove 3031 cooperates with the fixed block 201 or the clamping part 203 is controlled by a motor to clamp the fixed assembly 3, the lifting seat is controlled to a predetermined height, the cylinder 105 or the liquid cylinder is adjusted to make the limit plate 106 of the gluing device 1 contact with the outer contour of the assembly 3, the pneumatic diaphragm pump is controlled to start, the spray gun 1043 is turned on to spray glue, and at the same time, the motor is started to control the fixed base 2 to rotate at a slow speed. During the rotation process, the limit plate 106 is in dynamic contact with the outer contour of the assembly 3, so that the spray gun 1043 always moves above the target spraying area and completes the spraying.In this embodiment, the actions of the diaphragm pump, the cylinder 105, the fixed base 2 and the spray gun 1043 are automatically controlled by a control device, such as a commonly used processor, single chip microcomputer, etc. to achieve automatic control.

[0029] Figure 8 The present invention shows a structure of a movable gluing device 1, which includes a circular track 206 with the geometric center of the fixed base 2 as the center. The support frame 101 of the gluing device 1 is provided with a movable base 1011, which can be moved along the track 206 under the drive of a motor. In this embodiment, the fixed base 2 does not rotate, but the gluing device 1 moves around the fixed base 2 so that the glue gun moves one circle along the outer contour of the assembly 3 to complete the gluing.

[0030] In the above embodiment, during the gluing process, since there is an angle between the center line of the fixing portion and the outer contour line of the assembly 3, the angle of the angle changes dynamically, the limiting piece 106 contacts the outer contour of the assembly 3 and the distance from the spray gun 1043 remains unchanged, and the change in the angle causes the vertical distance between the nozzle of the spray gun 1043 and the edge line of the outer contour to deviate, that is, the actual range of the spray gun 1043 deviates from the target gluing range. An improved solution is that at least two second elastic telescopic rods 103 are provided between the connecting portion 1042 and the first elastic telescopic rod 102, and the structure of the second elastic telescopic rod 103 is the same as that of the first elastic telescopic rod 102. The connecting portion 1042 is provided with a wing for connecting to the through hole at one end of the second elastic telescopic rod 103, and the wing and the elastic telescopic rod are movably connected by a hinge or a rotating shaft 204, and the fixing portion 1041 is perpendicular to the surface of the connecting portion 1042. In this embodiment, when the distance between two points on the outer contour of the assembly is short, it can be regarded as a straight line. The two ends of the limiting plate can simulate the straight line under the action of the two second elastic telescopic rods, that is, the limiting plate can be regarded as parallel to and in contact with the outer contour, the fixed part is perpendicular to the surface of the limiting plate, and the nozzle is perpendicular to the contour line, which can eliminate the deviation. It should be noted that after using two second elastic telescopic rods 103, the limiting plate 106 forms a surface contact with the outer contour. In order to avoid the curve of the outer contour of the assembly 3 causing the middle part of the limiting plate 106 to be suspended in the air, that is, not in contact with the outer contour, causing a significant deviation in the actual range of the spray gun 1043, the distance on both sides of the limiting plate 106 should be small to control the deviation within an appropriate range.

[0031] In the above embodiment, referring to Figure 9 As shown, the fixed base 2 is provided with an inwardly concave accommodating cavity 202, the assembly 3 is fixed in the accommodating cavity 202, a baffle 107 is fixed on the upper glue head 104, the baffle 107 is used to block the glue mist, and an air suction port 207 is provided on the side wall of the accommodating cavity 202. This embodiment can reduce the impact of the glue mist on the environment and the human body.

[0032] Reference Figure 7As shown, embodiment 2 of the present invention adopts brushing for gluing. Embodiment 2 is basically the same as the above embodiment, with the only difference being that a rubber roller 108 is used in place of the spray gun 1043 in embodiment 2, and a third elastic telescopic rod 109 is provided above the rubber roller 108. The structure of the third elastic telescopic rod 109 is the same as that of the first elastic telescopic rod 102. The function of the third elastic telescopic rod 109 is to keep the rubber roller 108 in close contact with the target gluing area. The rubber roller 108 achieves gluing by rolling and brushing the glue in the target area. The rubber roller 108 is connected to the glue supply pipe 5, and the glue liquid covers the surface of the rubber roller 108.

[0033] The present invention also discloses an automatic glue brushing production line, referring to Figure 1 As shown, it includes a turntable 4, on which the automatic gluing device is arranged. The turntable 4 can rotate under the drive of a motor, and the gluing device 1 or the fixed base 2 rotates at the same angular velocity as the turntable 4.

[0034] In the above embodiment, referring to Figure 1 As shown, it also includes an assembly line conveyor belt 6 and a robotic arm 7. The robotic arm 7 is arranged between the conveyor belt 6 and the turntable 4 and is used to transfer the assembly 3 between the conveyor belt 6 and the turntable 4. In this embodiment, the bottom of the midsole 302 of the assembly 3 is detachably fixed with a strong magnet, and the robotic arm is provided with an electromagnetic device that cooperates with the strong magnet. The assembly 3 of the shoe upper 301 and the shoe last 303 can be taken and placed by powering on and off.

[0035] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make some changes or modifications to equivalent embodiments using the technical contents disclosed above. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An automatic gluing device for the bottom of a shoe last and upper assembly, comprising a gluing device for causing glue to adhere to the bottom of the assembly, characterized in that: The invention also includes a fixing base for fixing the bottom of the assembly bottom upward on the fixing base, wherein the fixing base can rotate, and a portion of the gluing device is in dynamic contact with the outer contour of the assembly, in such a way that the gluing device can move relative to the outer contour of the assembly and cause the glue to adhere to a target area of the bottom of the assembly; The gluing device includes a support frame, a first elastic telescopic rod and a gluing head, the support frame is connected to the first elastic telescopic rod, the first elastic telescopic rod is connected to the gluing head, the gluing head includes a horizontally arranged fixing portion and a vertically arranged connecting portion, the fixing portion is provided with a glue spray gun or a glue roller, a limiting plate is fixed on the connecting portion, the limiting plate is provided with a ball or a roller, and the ball or the roller contacts the outer contour of the assembly; At least two second elastic telescopic rods are provided between the connecting portion and the first elastic telescopic rod, the second elastic telescopic rods are movably connected to the connecting portion, and the fixing portion is perpendicular to the surface of the connecting portion; Under the action of the two second elastic telescopic rods, the two ends of the limiting plate are in contact with the outer contour edge and can be regarded as parallel to the outer contour edge. The fixing part is perpendicular to the surface of the limiting plate, and the nozzle is perpendicular to the contour edge, eliminating the deviation of the vertical distance between the nozzle and the outer contour edge.

2. The automatic gluing device for the bottom of a shoe last and upper combination according to claim 1, characterized in that: The first elastic telescopic rod includes an outer sleeve and an inner telescopic rod. The sleeve is provided with a placement groove. One end of the inner telescopic rod is installed in the placement groove and can move along the placement groove. A spring is provided between the placement groove and the inner telescopic rod.

3. The automatic gluing device for the bottom of a shoe last and upper combination according to claim 1 or 2, characterized in that: The fixed base can rotate around its own geometric center.

4. The automatic gluing device for the bottom of a shoe last and upper combination according to claim 1 or 2, characterized in that: The fixed base is provided with a fixing block, and the shoe last is provided with a groove matched with the fixing block.

5. The automatic gluing device for the bottom of a shoe last and upper combination according to claim 1 or 2, characterized in that: The fixed base is provided with an inwardly concave accommodating cavity, and a plurality of retractable clamping parts are provided on the side walls of the accommodating cavity. The clamping parts fix the assembly by clamping the lower part of the assembly.

6. The automatic gluing device for the bottom of a shoe last and upper combination according to claim 1 or 2, characterized in that: The fixed base is provided with an inwardly concave accommodating cavity, the assembly is fixed in the accommodating cavity, a baffle is fixed on the upper glue head, the baffle is used to block glue mist, and an air suction port is provided on the side wall of the accommodating cavity.

7. An assembly line comprising the automatic gluing device according to claim 1 or 2, characterized in that: The automatic gluing device is provided on a turntable, the turntable can be rotated by a motor, and the gluing device or the fixed base rotates at the same angular velocity as the turntable; The utility model comprises an assembly line conveyor belt and a mechanical arm. The mechanical arm is arranged between the conveyor belt and the turntable and is used for transferring the assembly between the conveyor belt and the turntable.

Images