Tool for removing U-shaped nail
By designing a U-shaped nail tool with grooves on the cone tip, the lever principle and arc structure are used to quickly lift U-shaped nails, which solves the problem of slow U-shaped nails and improves the production efficiency of shoemaking.
Patent Information
- Application Number
- CN202422633472.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-10-30
AI Technical Summary
In the prior art, the U-shaped nail speed is slow, which affects the production efficiency of shoemaking.
Design a tool for raising U-shaped nails, with grooves on the taper tip to jamm the back of the U-shaped nails, and use the lever principle and arc structure to quickly lift U-shaped nails.
It improves the production efficiency of shoemaking, is simple to operate, does not damage the shoes, and does not affect other processes.
Smart Images
Figure CN223262435U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of shoemaking, and particularly relates to a tool for driving U-shaped nails. Background Art
[0002] The production process for cold-glued shoes generally includes: last stretching, heat setting, gluing, and cold setting. Last stretching involves nailing the insole to the bottom of the last, sandwiching the cut heel and toe cap between the upper and lining, and stretching them onto the last. Heat setting uses heat to eliminate the internal stress generated during stretching in the fabric fibers, allowing the macromolecules to relax to a certain degree and fixing the shape of the woven fibers. Gluing uses adhesive to connect the upper, insole, and outsole. Cold setting changes the shoe's shape through cooling and setting, improving dimensional accuracy and surface quality while reducing deformation and warping.
[0003] During the last-setting process, the operator uses an air nail gun to drive U-shaped nails into the insole, firmly connecting the insole to the sole of the last. This helps position the upper and heel, and the operator removes them after the heat-setting process. Therefore, removing the U-shaped nails is a very important step in the entire production process. The speed and technique of the operator in removing the U-shaped nails greatly affect the production speed and product quality of the entire shoemaking process. However, due to the overall small size of the U-shaped nails, and the fact that the U-shaped nails have gone through the entire last-setting and heat-setting processes after being nailed by the air nail gun, the U-shaped nails are very tightly adhered to the bottom of the shoe last and the insole, resulting in the operator's slow removal of the U-shaped nails, affecting the efficiency of the entire production.
[0004] Therefore, the technical problem to be solved by the present invention is: how to quickly remove the U-shaped nails and improve the shoemaking production efficiency. Utility Model Content
[0005] In order to solve the technical problem of how to quickly remove U-shaped nails and improve shoemaking production efficiency, the utility model provides a tool for removing U-shaped nails.
[0006] The specific plan is as follows:
[0007] A tool for removing U-shaped nails comprises a handle, wherein the handle is provided with a cone tip, and the cone tip is provided with a groove capable of clamping the back of the U-shaped nail, and the groove is arc-shaped.
[0008] The cone tip is provided with a bend, and the bend divides the cone tip into different parts, namely the first section, the second section and the third section. The first section and the second section are separate two-section structures or an integral structure, and a groove is provided on the third section.
[0009] The third section is a straight line structure, and the angle formed by the first section and the second section, and the angle formed by the second section and the third section are respectively in the range of 0-0 degrees.
[0010] The third section is an arc-shaped structure, and a raised block is provided at the lower part of the connection between the third section and the second section. The straight line where the center of the groove and the center of the raised block are located, and the straight line where the tangent line tangent to the third section and the raised block is located, form an angle of ±° between the two straight lines.
[0011] A screwdriver rod is embedded in the handle, one end of the screwdriver rod is hidden in the handle, and the other end is exposed from the handle, and a cone tip is fixed at the end of the screwdriver rod exposed from the handle.
[0012] The handle is a solid ellipsoid, and anti-slip grooves are provided on the surface of the ellipsoid.
[0013] The beneficial effects of the utility model are:
[0014] The utility model provides a tool for removing U-shaped nails. A groove is provided on the tip of a cone, and the back of the U-shaped nail is clamped by the groove. During operation, the U-shaped nail can be quickly removed by simply lifting the U-shaped nail with the tip of the cone, thereby improving the shoemaking production efficiency. The device has a simple structure and is easy to use. It will not cause wear and scratches to the shoes and will not cause any impact on other working procedures. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the utility model tool.
[0016] Figure 2 It is another schematic diagram of the utility model tool.
[0017] Grip 1, cone tip 2, first section 21, second section 22, third section 23, groove 3, protrusion 4, DETAILED DESCRIPTION
[0018] The following is a clear and complete description of the technical solutions in the embodiments of the present invention, in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the implementation of the present invention, not all of it. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0019] The U-shaped nail is U-shaped. In the present invention, the back of the U-shaped nail refers to the bottom arc portion of the U.
[0020] like Figure 1 and Figure 2 As shown, the utility model provides a tool for removing U-shaped nails, comprising a handle 1, a cone tip 2 is provided on the handle 1, and a groove 3 capable of clamping the back of the U-shaped nail is provided on the cone tip 2, and the groove 3 is arc-shaped.
[0021] The utility model provides a tool for removing U-shaped nails. A groove is provided on the tip of a cone, and the back of the U-shaped nail is clamped by the groove. During operation, the U-shaped nail can be quickly removed by simply lifting the U-shaped nail with the tip of the cone, thereby improving the shoemaking production efficiency. The device has a simple structure and is easy to use. It will not cause wear and scratches to the shoes and will not cause any impact on other working procedures.
[0022] like Figure 1 As shown, one end of the cone tip 2 is fixed on the handle 1, and the other end is provided with a groove 3 for picking up the U-shaped nail. Specifically, the cone tip 2 is provided with a bend, and the bend divides the cone tip 2 into different parts, namely the first section 21, the second section 22 and the third section 23. The first section 21 and the second section 22 are separate two-section structures or an integral structure, and the groove 3 is provided on the third section 23; the third section 23 of the cone tip 2 is used to extend between the U-shaped nail and the inner bottom nailed by the U-shaped nail to pick out the U-shaped nail. In this utility model, only the first section 21 and the second section 22 are two-section structures as an example for explanation.
[0023] like Figure 1 As shown, the third section 23 is a straight structure, and the angle formed by the first section 21 and the second section 22, and the angle formed by the second section 22 and the third section 23 are respectively in the range of 110-130 degrees; wherein, the angle formed by the first section 21 and the second section 22, and the angle formed by the second section 22 and the third section 23 are preferably 120 degrees, and the two-bend three-section setting utilizes the principle of leverage, which is more labor-saving in actual operation.
[0024] The lengths of the second section 22 and the third section 23 are both greater than the length of the third section 23. Specifically, the operator grasps the handle 1, inserts the tapered tip 2 between the U-shaped staple and the inner bottom of the staple, pushes the tool forward so that the back of the U-shaped staple can be stuck in the groove 3 of the tapered tip 2, and presses the handle 1 downward with force. At this time, the first section 21 and the second section 22 together form a power arm, with the bending point where the third section 23 and the second section 22 are connected as a fulcrum. The force used by the operator to lift the U-shaped staple serves as the power. Under the condition that the total force remains unchanged, the longer the power arm, the less effort is required. In this embodiment, the lengths of the second section 22 and the third section 23 are both greater than the length of the third section 23, so it is more labor-saving in actual operation.
[0025] like Figure 2 As shown, the third section 23 is an arc-shaped structure, and a raised block 4 is provided at the lower part of the connection between the third section 23 and the second section 22. The straight line a where the center of the groove 3 and the center of the raised block 4 are located, and the straight line b where the tangent line tangent to the third section 23 and the raised block 4 are located, form an angle of ±3° between the two straight lines.
[0026] Since the third section 23 is an arc-shaped structure, the contact point between the third section 23 and the insole is a single point. During the rotation of the third section 23 relative to the insole, the contact position (i.e., the position of the point) varies. Each contact point has a tangent to the arc-shaped structure. Since the raised block 4 is a dot structure, each point on the outer contour of the raised block 4 has a tangent to the raised block 4. When the tangent of the contact point to the arc-shaped structure and the tangent of the point on the outer contour to the raised block 4 coincide, i.e., are collinear, this line is line b. The line containing the tangent to the third section 23 and the raised block 4 is also referred to as line b. With this arrangement, when the back of the U-shaped nail is stuck in the groove 3 of the cone tip 2, the U-shaped nail can be lifted up using the raised block 4 as a fulcrum. The entire process can be completed in one motion, greatly improving shoemaking efficiency. Preferably, the raised block 4 is welded to the cone tip 2.
[0027] It should be noted that the drawings in this application are only schematic diagrams to assist in the explanation. In reality, the cone tip is very thin. Figure 2 It is only for the purpose of more clearly showing the positions of the components constituting straight line a and straight line b, as well as the relationship between straight line a and straight line b.
[0028] like Figure 1 and Figure 2 As shown, the handle 1 is embedded with a screwdriver rod, one end of the screwdriver rod is hidden in the handle 1, and the other end is exposed from the handle 1, and the end of the screwdriver rod exposed from the handle 1 is fixedly connected to the cone tip 2. The selected fixing method can be a welding connection, and the cone tip 2 is welded by the screwdriver rod, so that the connection between the handle 1 and the cone tip 2 is tighter.
[0029] like Figure 1 and Figure 2 As shown, the handle 1 is a solid ellipsoid with anti-slip grooves on its surface. Specifically, the handle 1 is made of wood and is engraved with long wavy stripes to prevent the operator's hands from slipping.
[0030] The screwdriver shank and the cone tip are both made of CR-V steel, a type of alloy tool steel infused with chromium-vanadium elements. After heat treatment, the hardness reaches over 60 HRC (Rockwell hardness), providing excellent wear resistance under specific working conditions. This new screwdriver is smooth and aesthetically pleasing, with simple construction and ease of use, significantly accelerating the operator's nail removal process and improving work efficiency.
[0031] The specific working process of this utility model is:
[0032] like Figure 1As shown, the operator holds the handle 1 with his hand, inserts the third section 23 of the cone tip 2 between the U-shaped nail and the inner bottom of the U-shaped nail, pushes the tool forward so that the back of the U-shaped nail can be stuck in the groove 3 of the cone tip 2, and presses the handle 1 downward with force. At this time, the U-shaped nail is picked up with the bending point where the third section 23 and the second section 22 are connected as the fulcrum. The whole process can be completed with only two actions of inserting and picking up.
[0033] like Figure 2 As shown, the operator holds the handle 1 with his hand and extends the third section 23 of the cone tip 2 between the U-shaped nail and the insole nailed by the U-shaped nail. Utilizing the arc structure of the third section 23, the third section 23 contacts the insole of the shoe, allowing the tool to rotate relative to the insole. When the back of the U-shaped nail is stuck in the groove 3 of the cone tip 2, the U-shaped nail can be picked up with the protruding block 4 as a fulcrum. The whole process can be completed with only one action.
[0034] The technical means disclosed in the present invention are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also considered to be within the scope of protection of the present invention.
Claims
1. A tool for removing U-shaped staples, characterized by: The utility model comprises a handle (1), wherein the handle (1) is provided with a cone tip (2), and the cone tip (2) is provided with a groove (3) capable of clamping the back of a U-shaped nail, and the groove (3) is arc-shaped.
2. The U-shaped staple removal tool according to claim 1, characterized in that: The cone tip (2) is provided with a bend, and the bend divides the cone tip (2) into different parts, namely a first section (21), a second section (22) and a third section (23). The first section (21) and the second section (22) are separate two-section structures or an integral structure. The third section (23) is provided with a groove (3).
3. The U-shaped staple removal tool according to claim 2, characterized in that: The third section (23) is a straight line structure, and the angle formed by the first section (21) and the second section (22), and the angle formed by the second section (22) and the third section (23) are respectively in the range of 110-130 degrees.
4. The U-shaped staple removal tool according to claim 2, characterized in that: The third section (23) is an arc-shaped structure, and a raised block (4) is provided at the lower portion of the connection between the third section (23) and the second section (22). A straight line connecting the center of the groove (3) and the center of the raised block (4) and a straight line tangent to the third section (23) and the raised block (4) form an angle of ±3° between the two straight lines.
5. The U-shaped staple removal tool according to claim 1, characterized in that: A screwdriver rod is embedded in the handle (1), one end of the screwdriver rod is hidden in the handle (1), and the other end is exposed from the handle (1), and a cone tip (2) is fixed at the end of the screwdriver rod exposed from the handle (1).
6. The U-shaped staple removal tool according to claim 1, characterized in that: The handle (1) is a solid ellipsoid, and anti-slip grooves are provided on the surface of the ellipsoid.