Double-point supporting device for gluing uppers and shoe trees

Abstract

A double-point supporting device used during shoe upper and shoe tree glue brushing comprises a base, and a main supporting component and an auxiliary supporting component are arranged on the base. The main supporting component comprises a first supporting column, the lower end of the first supporting column is connected to the base, and the upper end of the first supporting column is in spherical hinge connection with an inserting rod through a universal ball joint. The auxiliary supporting component comprises a second supporting column, the second supporting column is obliquely arranged facing the side of the main supporting component, the lower end of the second supporting column is connected to the base, and the upper end of the second supporting column is rotationally connected with a supporting ball head. Compared with the prior art, the shoe tree has the technical effects that the shoe tree is provided with a front support and a rear support, the rotation of the shoe tree is not affected, the force of a wrist is weakened, and the glue brushing operation is facilitated.

Description

Technical Field

[0001] This invention relates to the field of shoe manufacturing equipment technology, specifically to a special tool used in the shoe manufacturing process to assist in applying adhesive to the upper and foot of the shoe after the upper is completed and before the outsole is glued. Background Technology

[0002] In shoemaking, bonding the upper to the sole is a crucial step. Before bonding, adhesive needs to be applied to the upper's folded-in edge (the part of the upper that folds inward) and the area where the outsole will be bonded. Currently, for processes like Goodyear welt or certain small-batch, highly customized orders, this process is mostly done by hand. During this process, the worker typically holds a shoe last (with the upper already stretched) in one hand and a brush in the other to apply the adhesive. To apply the adhesive to the entire circumference of the upper, the worker needs to constantly and laboriously twist their wrist or frequently switch hands to rotate the shoe last.

[0003] Technical issues: First, the hand is not steady, which can easily lead to uneven application of glue and affect the bonding quality; second, the operation is laborious, inefficient, and can easily cause worker fatigue; third, for unskilled workers, glue can easily get on the shoe surface or other areas that should not be glued, resulting in waste or defective products. Summary of the Invention

[0004] The technical problem this invention aims to solve is: how to design a dual-point support device for applying glue to shoe uppers and lasts to assist in completing high-quality, high-efficiency circumferential glue application.

[0005] The specific technical solution of the present invention is as follows: A dual-point support device for applying glue to shoe uppers and lasts includes a base, on which a main support component and an auxiliary support component are provided; the main support component includes a first support column, the lower end of which is connected to the base, and the upper end of which is connected to a plug rod via a universal ball joint; the auxiliary support component includes a second support column, which is inclined towards the side facing the main support component, the lower end of which is connected to the base, and the upper end of which is rotatably connected to a support ball joint.

[0006] The second support column is a long and short telescopic rod, including a fixed rod part and a telescopic rod part. A locking device is provided at the connection between the fixed rod part and the telescopic rod part. When the locking device is unlocked, the fixed rod part and the telescopic rod part can slide and extend. When the locking device is unlocked, the fixed rod part and the telescopic rod part are fixed as one piece. The fixed rod part is connected to the base, and the upper end of the telescopic rod part is rotatably connected to the support ball head.

[0007] The supporting part of the ball head is the supporting plane.

[0008] The upper end of the telescopic rod is the central shaft, and the supporting ball head is sleeved outside the central shaft, with a bearing between the two.

[0009] The universal ball joint includes a ball socket and a ball joint head. The ball socket is fixed to the upper end of the first support column, and the ball joint head is fixed to the plug rod.

[0010] The bottom of the base has a rubber anti-slip pad.

[0011] The outer end of the connector is tapered.

[0012] Compared with the prior art, the technical advantages of the present invention are that the present invention has two points of support at the front and back, which does not affect the rotation of the shoe last, reduces the force of the wrist, and facilitates the glue application process. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the usage state of the present invention (1).

[0014] Figure 2 This is a three-dimensional schematic diagram of the present invention.

[0015] Figure 3 This is an enlarged schematic diagram of the connector rod.

[0016] Figure 4 This is a schematic diagram of the auxiliary support components.

[0017] Figure 5 This is a schematic diagram of the cross-section of the supporting sphere.

[0018] Figure 6 This is a schematic diagram of the usage state of the present invention (2).

[0019] Figure 7 This is a schematic diagram of existing shoe last technology. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0021] like Figure 1-4 A dual-point support device for applying glue to shoe uppers and shoe lasts includes a base 1, on which a main support component 2 and an auxiliary support component 3 are provided.

[0022] The main support component 2 includes a first support column 21, the lower end of which is connected to the base 1, and the upper end of which is connected to the plug rod 24 via a universal ball joint 22.

[0023] The auxiliary support component 3 includes a second support column 31, which is inclined to face the main support component 2. The lower end of the second support column 31 is connected to the base 1, and the upper end of the second support column 31 is rotatably connected to the support ball head 34.

[0024] To accommodate different shoe sizes, the second support column 31 is a telescopic rod of varying lengths, including a fixed rod part and a telescopic rod part 33. A locking member 32 is provided at the connection between the fixed rod part and the telescopic rod part 33. When the locking member 32 is unlocked, the fixed rod part and the telescopic rod part 33 can slide and extend. When the locking member 32 is unlocked, the fixed rod part and the telescopic rod part 33 are fixed as one piece, with the fixed rod part connected to the base 1 and the upper end of the telescopic rod part 33 rotatably connected to the support ball head 34.

[0025] like Figure 4-5 To prevent the shoe from slipping off the support ball head 34, the support part of the support ball head 34 is a support plane 341.

[0026] like Figure 5 To facilitate rotation, the upper end of the telescopic rod 33 is a central shaft 331, and the support ball head 34 is sleeved on the outside of the central shaft 331, with a bearing 342 between the two.

[0027] The universal ball joint 22 includes a ball socket 221 and a ball joint head 222. The ball socket 221 is fixed to the upper end of the first support column 21, and the ball joint head 222 is fixed to the plug rod 24.

[0028] like Figure 3 The plug-in rod 24 includes a ball head connecting part 243, a gripping part 242, and an insertion part 241 connected in sequence.

[0029] To facilitate securing base 1, a rubber anti-slip pad is attached to the bottom of base 1.

[0030] To facilitate fitting the insertion hole at the end of the shoe last, the outer end of the insertion rod 24 is tapered.

[0031] Its working principle is as follows: S1. Preparation: Based on the length of the shoe last 4, loosen the locking part 32 of the auxiliary support component 3, adjust the height of the telescopic rod part 33 to match the length of the shoe last 4, so that the support plane 341 of the support ball head 34 is slightly lower than (or equal to) the height of the universal ball joint 22, and then tighten the locking part 32.

[0032] S2. Clamping: Align the end hole 41 of the last 4 (with the upper completed, see shoe upper 5) with the insertion hole 41 and insert it into the insertion rod 24 of the main support component 2. Then gently lower the front end (toe portion) of the last 4 so that the rear side of the last 4 (see shoe upper 5) is properly positioned. Figure 1 , Figure 6 The shoe last 4 is stably placed on the support plane 341 of the support ball 34 of the auxiliary support component 3, and is set at an angle (the toe direction is the higher end and the heel direction is the lower end).

[0033] At this point, the shoe last 4 is firmly supported by two support points.

[0034] S3. Glue application operation: The operator stands in front of the device and uses their left hand (non-dominant hand) to hold the middle or front of the shoe last 4, which can be easily swung slightly to the left and right. During the swinging, the shoe last 4 is basically rotating on a conical surface (the tip of the cone is the supporting plane 341, and the bottom is the plane swept by the insertion rod 24 during rotation). During the rotation, the circumference 51 of the upper foot can be gradually exposed on it. At this time, the glue application area 51 on the outer side of the upper foot circumference of the shoe upper 5 can be applied.

[0035] Because the rotational resistance of the universal ball joint 22 and the supporting ball joint 34 is extremely small, this process is very smooth.

[0036] Simultaneously, the operator uses their right hand (dominant hand) to hold the glue brush and apply glue to the glue application areas 51 of the shoe upper 5, which are revealed sequentially as the shoe rotates. The planar support of the ball head 34 ensures stability during rotation.

[0037] It should be noted that during the aforementioned rotation, the shoe last 4 may have a small displacement on the supporting plane 341. In this case, the shoe last 4 may have a small displacement in its axial direction ( Figure 1 It can swing upwards (from the upper left to the lower right) and make adaptive adjustments, because it is equipped with a universal ball joint 22 to support this adaptive adjustment.

[0038] Also, when applying glue, it is necessary to... In addition, depending on personal operating habits, it can be operated with either the left or right hand.

[0039] S4. Completion and Replacement: After the entire circumference of the upper is coated with glue, simply lift the front end of the last 4 (that is, swing it in the axial direction mentioned above) to detach it from the support ball head 34, and then pull the last 4 out of the plug rod 24 to replace the next upper to be processed.

[0040] For other details, please refer to the existing technology.

[0041] Features of this application: S1. Compared with the prior art, the technical effect of the present invention is that the present invention has two points of support at the front and back, which does not affect the rotation of the shoe last, reduces the force of the wrist, and facilitates the glue application process.

[0042] S2. This invention is a double-point support and rotation device for shoe lasts used in applying glue to shoe uppers, belonging to the technical field of auxiliary tools for shoemaking machinery. This device aims to solve the problems of unstable operation, low efficiency, and uneven glue application when manually applying glue to the circumferential surface of the shoe upper on a shoe last. The device mainly includes: a base; an active support column fixed to one side of the base, the top of which is movably connected to a shoe last insertion rod via a universal ball joint, the insertion rod being used to insert into a standard insertion hole at the end of the shoe last; and a driven support column fixed to the other side of the base, the top of which has a height-adjustable, flat support ball head. During operation, one end of the shoe last is inserted into the insertion rod, and the bottom surface of the other end is gently placed on the flat surface of the support ball head. The operator can then stabilize the shoe last with one hand while applying glue with the other. With the universal ball joint, the operator can easily and smoothly rotate and tilt the shoe last along its axis at multiple angles, thus making it convenient, fast and even to apply glue to the entire upper, greatly improving work efficiency and quality.

[0043] S3. This invention is a special tool that can stably support the shoe last and allow it to rotate easily and precisely to assist in completing high-quality and efficient circumferential glue application.

[0044] S4 A double-point support and rotation device for shoe lasts used in shoe upper glue application includes a base, a main support component, and an auxiliary support component. The main support component is used to drive and position the shoe last. It includes a first support column fixed to one side of the base. A universal ball joint is provided at the top of the first support column, which connects to a universal joint. A plug-in rod is fixed to the end of the universal joint. The plug-in rod is used to precisely insert into a standard process hole at the end of the shoe last, forming a stable connection. The universal ball joint allows the plug-in rod and the shoe last on it to achieve smooth multi-directional swinging and circumferential rotation with minimal resistance.

[0045] S5. The auxiliary support component is used to assist in supporting the other end of the shoe last (the heel end). It includes a second support column fixed to the other side of the base. The top of the second support column is equipped with a height adjustment mechanism to adapt to shoe lasts of different sizes and heights. A support rod is installed on the height adjustment mechanism, and a support ball head is mounted on the top of the support rod. The top of the ball head is machined into a small flat surface. In the working state, the bottom surface of the other end of the shoe last rests lightly on this flat surface. The support ball head itself can rotate freely and rolls against the bottom surface of the shoe last, providing stable support without hindering the shoe last from being actively driven to rotate.

[0046] 1. Improve the quality and uniformity of glue application: The device provides two stable support points for the shoe last, eliminating the influence of hand tremors. Operators can control the force and path of glue application more evenly and accurately, ensuring a uniform glue layer.

[0047] 2. Significantly improves work efficiency: The operator only needs to gently turn the shoe last with the non-dominant hand to make the shoe last rotate smoothly by utilizing the flexibility of the ball joint, while the dominant hand can focus on the glue application action, realizing a smooth operation of "turning with one hand and brushing with the other", and significantly speeding up the glue application speed.

[0048] 3. Reduced labor intensity and skill requirements: The tool handles the main functions of support and rotation, eliminating the need for workers to strain to hold and twist heavy shoe lasts, thus reducing wrist and arm fatigue. It also simplifies operation and is more user-friendly for new workers.

[0049] 4. High adaptability: By adjusting the height of the driven support column, it can be compatible with different styles and sizes of shoe lasts, making it highly versatile.

[0050] 5. Simple structure and low cost: This device does not require a motor or complex control system. Its mechanical structure is simple and reliable, and its manufacturing and maintenance costs are low, making it very suitable for use in small and medium-sized shoe factories or custom workshops.

[0051] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present invention, and these should also be considered within the scope of protection of the present invention.

Claims

1. A dual-point support device for applying glue to shoe uppers and shoe lasts, comprising a base (1), characterized in that: The base (1) is provided with a main support component (2) and an auxiliary support component (3); The main support component (2) includes a first support column (21), the lower end of which is connected to the base (1), and the upper end of which is connected to the plug rod (24) via a universal ball joint (22). The auxiliary support component (3) includes a second support column (31), which is inclined to the side facing the main support component (2). The lower end of the second support column (31) is connected to the base (1), and the upper end of the second support column (31) is rotatably connected to the support ball head (34).

2. The dual-point support device for applying glue to shoe uppers and lasts as described in claim 1, characterized in that: The second support column (31) is a long and short telescopic rod, including a fixed rod part and a telescopic rod part (33). A locking part (32) is provided at the connection between the fixed rod part and the telescopic rod part (33). When the locking part (32) is unlocked, the fixed rod part and the telescopic rod part (33) can slide and extend. When the locking part (32) is unlocked, the fixed rod part and the telescopic rod part (33) are fixed as one piece. The fixed rod part is connected to the base (1), and the upper end of the telescopic rod part (33) is rotatably connected to the support ball head (34).

3. The dual-point support device for applying glue to shoe uppers and lasts as described in claim 2, characterized in that: The supporting part of the ball head (34) is the supporting plane (341).

4. The dual-point support device for applying glue to shoe uppers and lasts as described in claim 3, characterized in that: The upper end of the telescopic rod (33) is a central shaft (331), and the support ball head (34) is sleeved on the outside of the central shaft (331), and a bearing (342) is provided between the two.

5. The dual-point support device for applying glue to shoe uppers and lasts as described in claim 4, characterized in that: The universal ball joint (22) includes a ball socket (221) and a ball joint head (222). The ball socket (221) is fixed to the upper end of the first support column (21), and the ball joint head (222) is fixed to the plug rod (24).

6. The dual-point support device for applying glue to shoe uppers and lasts as described in claim 5, characterized in that: The bottom of the base (1) is covered with a rubber anti-slip pad.

7. The dual-point support device for applying glue to shoe uppers and lasts as described in claim 6, characterized in that: The outer end of the plug rod (24) is tapered.

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