Clamp structure for conveying mechanism of cold header

Abstract

The clamp structure for the cold header conveying mechanism comprises two sets of symmetrically-arranged clamping arms and a clamp core, each clamping arm comprises a clamping end, a clamping groove is formed in the side, facing the other set of clamping arms, of each clamping end, and the two sets of clamping grooves are matched to clamp a workpiece. The clamp core is assembled on the clamping end, and the clamping groove is located in the clamp core. The hardness of the material of the clamp core is smaller than that of a workpiece. Compared with the prior art, the clamp has the advantages that the combined design of the clamp arms and the clamp core is adopted, materials with hardness lower than that of a workpiece are selected as the clamp core materials, the surface of the workpiece is effectively protected, the clamp core instead of the whole clamp arms can be rapidly replaced to meet different clamping requirements, the maintenance process is greatly simplified, and the work efficiency is improved. And the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of clamping of cold heading machines, and in particular relates to a clamp structure used for a transmission mechanism of a cold heading machine. Background Art

[0002] As an efficient metal forming method, cold heading is widely used in the manufacture of screws, nuts and other fasteners. This process applies pressure to metal materials at room temperature to form them in a mold, which significantly improves production efficiency and reduces energy consumption. However, the design and material selection of the conveyor mechanism clamp, one of the core components of the cold heading machine, directly affects the processing quality and production cost of the product.

[0003] refer to Figure 1 In traditional manufacturing, the cold heading machine transmission mechanism clamps are mostly made of 45# steel. 45# steel is widely used in the machinery manufacturing industry for its good comprehensive mechanical properties (such as strength and toughness). However, the single material 45# steel clamps are prone to scratches on the product surface due to high friction during the frequent and rapid product transfer process, which not only affects the appearance quality of the product, but also may reduce its performance. In addition, due to the continuous wear and impact during the cold heading process, the 45# steel clamps are easy to damage. Once damaged, they often need to be replaced as a whole, which undoubtedly increases maintenance costs and production downtime, thereby pushing up the overall production cost.

[0004] In view of the above problems, the industry has been exploring new materials and design methods that can improve the durability of the transmission mechanism clamps, reduce product damage, and reduce maintenance and replacement costs. Therefore, developing an innovative solution that can optimize the cold heading machine transmission efficiency, improve product quality, and effectively extend the service life of the clamps has become an important direction for the current development of cold heading technology. Utility Model Content

[0005] In order to solve the above technical problems, the utility model solves them through the following technical solutions.

[0006] A clamp structure for a cold heading machine transmission mechanism, comprising two groups of symmetrically arranged clamp arms and a clamp core, wherein the clamp arm comprises a clamping end, and the clamping end is provided with a clamping groove on a side facing the other group of clamp arms, and the two groups of clamping grooves cooperate to clamp a workpiece. The clamp core is assembled on the clamping end, and the clamping groove is located on the clamp core. The hardness of the material of the clamp core is less than the hardness of the workpiece.

[0007] Preferably, the pliers core is made of copper alloy. This design can reduce the problem of workpiece deformation or damage caused by uneven force.

[0008] Preferably, the clamp arm is provided with an assembly groove for assembling the pliers core, and the assembly groove is L-shaped. This design ensures the accurate positioning of the pliers core and reduces maintenance costs and operation time.

[0009] Preferably, a limiting groove is provided at the bottom of the assembly groove, and a limiting protrusion assembled with the limiting groove is provided on the clamp core. This design is conducive to preventing displacement during use and enhancing the stability of clamping.

[0010] Preferably, it also includes a screw, and a through fixing hole is provided at the bottom of the limiting groove. The screw assembles the pliers core on the clamp arm through the fixing hole. This design improves the firmness of the structure and facilitates quick disassembly, assembly and maintenance.

[0011] Preferably, a weight-reducing groove is provided on the clamp arm, and the design of the weight-reducing groove effectively reduces the overall weight.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. By selecting a material with a lower hardness than the workpiece as the pliers core material and combining it with a carefully designed clamping groove structure, the utility model can ensure a stable clamping while greatly reducing the risk of direct pressure and damage to the workpiece surface. This design effectively protects the surface integrity of the workpiece and avoids scratches or indentations caused by clamping. It is especially suitable for high-precision workpiece processing that has strict requirements on appearance and dimensional accuracy, thereby improving the quality and market competitiveness of the finished product.

[0014] 2. In response to the diverse needs of different types of workpieces, this design allows the clamp core to be quickly replaced instead of the entire clamp arm to adapt to different clamping requirements, greatly simplifying the maintenance process and reducing maintenance costs. This modular design concept makes equipment adjustment more convenient, shortens the changeover time, and improves production efficiency and flexibility. Enterprises do not need to stock multiple models of complete clamp arms, but only need to prepare a few different specifications of clamp cores to cope with a wide range of production tasks, which is both economical and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a plan view of the prior art.

[0016] Figure 2 It is a plan view of the clamp structure of the utility model.

[0017] Figure 3 It is a schematic diagram of the structure of the clamp arm.

[0018] Figure 4 This is an exploded view of the clamp arm structure.

[0019] The following is a description of the markings in the drawings;

[0020] 1. Clamp arm; 2. Clamp core; 3. Screw; 4. Clamping end; 5. Clamping groove; 6. Assembly groove; 7. Limiting groove; 8. Limiting convex part; 9. Fixing hole; 10. Weight reduction groove; 11. Workpiece. DETAILED DESCRIPTION

[0021] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] In the following embodiments, the same or similar reference numerals throughout represent the same or similar components or components with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limitations on the present invention.

[0023] In the description of the present utility model, it should be understood that the terms: center, longitudinal, transverse, length, width, thickness, up, down, front, back, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, and therefore cannot be understood as limiting the present utility model. In addition, the terms: first, second, etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features shown. In the description of the present utility model, unless otherwise clearly specified and limited, the terms: install, connect, connect, etc. should be understood in a broad sense, and ordinary technicians in this field can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] Reference Figures 2 to 4 A clamp structure for a cold heading machine transmission mechanism includes two groups of symmetrically arranged clamp arms 1 and clamp cores 2, wherein the clamp arms 1 include clamp ends 4, and the clamp ends 4 are provided with clamp grooves 5 on a side facing the other group of clamp arms 1, and the two groups of clamp grooves 5 cooperate to clamp a workpiece 11. The clamp core 2 is assembled on the clamp end 4, and the clamp groove 5 is located on the clamp core 2. The hardness of the material of the clamp core 2 is less than the hardness of the workpiece 11.

[0025] The utility model preferably uses copper alloy as the material of the clamp core 2, which has a lower hardness than the workpiece 11, and can effectively avoid damage or indentation on the surface of the workpiece 11 during the clamping process, thereby protecting the surface finish of the workpiece 11, and is particularly suitable for precision machining occasions requiring high surface quality. Copper alloy also has good wear resistance and corrosion resistance, which prolongs the service life of the clamp.

[0026] Furthermore, in order to ensure the accuracy of the assembly of the pliers core 2, the clamp arm 1 and the pliers core 2 are assembled and fixed by screws 3. The clamp arm 1 is provided with an assembly groove 6 for assembling the pliers core 2, and the assembly groove 6 is L-shaped. A limiting groove 7 is provided at the bottom of the assembly groove 6, and a limiting protrusion 8 assembled with the limiting groove 7 is provided on the pliers core 2. The accurate positioning of the pliers core 2 is ensured, displacement during use is prevented, the stability of clamping is enhanced, and the maintenance cost and operation time are reduced. A through fixing hole 9 is provided at the bottom of the limiting groove 7, and the screw 3 assembles the pliers core 2 on the clamp arm 1 through the fixing hole 9. This design improves the firmness of the structure and facilitates quick disassembly and maintenance.

[0027] In addition, a weight-reducing groove 10 is provided on the clamp arm 1. The design of the weight-reducing groove 10 effectively reduces the overall weight, reduces the energy consumption and vibration during the operation of the cold heading machine, and improves the operation efficiency of the machine and the comfort of the operator.

[0028] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention shall be based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field shall fall within the protection scope of the present invention.

Claims

1. A clamp structure for a cold heading machine conveying mechanism, comprising two groups of symmetrically arranged clamp arms (1), the clamp arms (1) comprising clamp ends (4), the clamp ends (4) being provided with clamp grooves (5) on a side facing the other group of clamp arms (1), the two groups of clamp grooves (5) cooperating to clamp a workpiece (11), characterized in that: It also comprises a pliers core (2), the pliers core (2) being mounted on the clamping end (4), the clamping groove (5) being located on the pliers core (2); the hardness of the material of the pliers core (2) being less than the hardness of the workpiece (11).

2. A clamp structure for a cold heading machine conveying mechanism according to claim 1, characterized in that: The clamp core (2) is made of copper alloy.

3. A clamp structure for a cold heading machine conveying mechanism according to claim 1, characterized in that: The clamp arm (1) is provided with an assembly groove (6) for assembling the clamp core (2), and the assembly groove (6) is L-shaped.

4. A clamp structure for a cold heading machine conveying mechanism according to claim 3, characterized in that: A limiting groove (7) is provided at the bottom of the assembly groove (6), and a limiting protrusion (8) assembled with the limiting groove (7) is provided on the clamp core (2).

5. A clamp structure for a cold heading machine conveying mechanism according to claim 4, characterized in that: It also includes a screw (3), and a through fixing hole (9) is provided at the bottom of the limiting groove (7). The screw (3) assembles the clamp core (2) on the clamp arm (1) through the fixing hole (9).

6. A clamp structure for a cold heading machine conveying mechanism according to claim 1, characterized in that: The clamping arm (1) is provided with a weight-reducing groove (10).

Images