Special-shaped wire-drawing die structure

Abstract

The special-shaped wire-drawing die structure comprises an upper die block, a lower die block and an inner die, the upper die block and the lower die block are assembled together, an installation cavity for installing the inner die is formed between the upper die block and the lower die block, a die hole is formed in the middle of the inner die, end face rollers are arranged on the upper end face and the lower end face in the installation cavity, and side face rollers are arranged on the upper side face and the lower side face of the installation cavity. A positioning block is arranged on the side face of the inner die, the end face of the positioning block makes contact with the end face pin roller, and the side face of the positioning block makes contact with the side face pin roller. According to the utility model, a special mounting structure is arranged, the inner die is mounted in the mounting cavity between the upper die block and the lower die block, and the inner die can rotate relative to the outer die when being subjected to torsion in the wire drawing process, so that the torsion caused by unbalanced stress of drawn wires is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of wire drawing dies, in particular to a special-shaped wire drawing die structure. Background Art

[0002] Wire drawing dies usually refer to various dies for drawing metal wires, as well as wire drawing dies for drawing optical fibers. All wire drawing dies have a hole of a certain shape in the center, which may be round, square, octagonal or other special shapes. When the metal is pulled through the die hole, its size becomes smaller, and even its shape changes. When drawing soft metals (such as gold and silver), a steel die is sufficient, and there may be multiple holes of different apertures on the steel die. For some special-shaped hole types, during the wire drawing process, there may be an imbalance in the local force on the wire drawing section, and the drawn wire may have a circumferential torque, causing the wires to twist and entangle together after drawing, making it difficult to bundle or wind. In view of the above problems, the utility model provides a solution. Utility Model Content

[0003] The utility model aims to provide a special-shaped wire drawing die structure.

[0004] The above technical objectives of the utility model are achieved through the following technical solutions:

[0005] A special-shaped wire drawing die structure comprises an upper module, a lower module and an inner die. The upper module and the lower module are assembled together to form a mounting cavity for mounting the inner die in the middle. A die hole is provided in the middle position of the inner die. The upper and lower end faces in the mounting cavity are provided with end face rollers, and the upper and lower side faces of the mounting cavity are provided with side face rollers. The side faces of the inner die are provided with positioning blocks, and the end faces of the positioning blocks are in contact with the end face rollers, and the side faces of the positioning blocks are in contact with the side face rollers.

[0006] Furthermore, the contact surfaces of the upper module and the lower module are respectively provided with positioning posts and positioning holes cooperating with the positioning posts. By providing the positioning holes and positioning post structures, the alignment of the upper module and the lower module after installation is improved.

[0007] Furthermore, the upper and lower end surfaces of the upper module and the lower module are provided with countersunk holes, and screws are inserted in the countersunk holes. The screws cooperate with nuts to connect and fix the upper module and the lower module. After the upper module and the lower module are installed together, the overall shape is cylindrical, which is the same as the shape of an ordinary wire drawing die.

[0008] Furthermore, an annular groove is provided in the middle of the outer side of the inner mold, and the inner mold can be easily removed from the installation cavity by providing the annular groove.

[0009] To sum up, the utility model has the following beneficial effects: the utility model installs the inner mold in the installation cavity between the upper module and the lower module by setting a special installation structure. During the wire drawing process, if the inner mold is subjected to torque, the inner mold can rotate relative to the outer mold, thereby reducing the torque caused by the unbalanced force of the drawn wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0011] Figure 2 yes Figure 1 A partial schematic diagram of .

[0012] In the figure, 1, upper module; 2, lower module; 3, inner mold; 4, countersunk hole; 5, screw; 6, nut; 7, mounting cavity; 8, mold hole; 9, positioning block; 10, ring groove; 11, positioning column; 12, end roller; 13, side roller. DETAILED DESCRIPTION

[0013] The utility model is further described in detail below in conjunction with the accompanying drawings, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0014] like Figure 1 and Figure 2 As shown, a special-shaped wire drawing die structure includes an upper module 1, a lower module 2 and an inner die 3. The upper module 1 and the lower module 2 are assembled together to form a mounting cavity 7 for mounting the inner die 3 in the middle. A die hole 8 is provided in the middle position of the inner die 3. The upper and lower end faces in the mounting cavity 7 are provided with end face rollers 12, and the upper and lower side faces of the mounting cavity 7 are provided with side face rollers 13. The side faces of the inner die 3 are provided with positioning blocks 9, and the end faces of the positioning blocks 9 are in contact with the end face rollers 12, and the side faces of the positioning blocks 9 are in contact with the side face rollers 13.

[0015] Furthermore, the contact surfaces of the upper module 1 and the lower module 2 are respectively provided with positioning posts 11 and positioning holes matched with the positioning posts 11. By providing the positioning holes and the positioning posts 11 structure, the alignment of the upper module 1 and the lower module 2 after installation is improved.

[0016] Furthermore, the upper and lower end surfaces of the upper module 1 and the lower module 2 are provided with countersunk holes 4, and screw rods 5 are inserted into the countersunk holes 4. The screw rods 5 cooperate with the nuts 6 to connect and fix the upper module 1 and the lower module 2. After the upper module 1 and the lower module 2 are installed together, the overall shape is cylindrical, which is the same as the shape of an ordinary wire drawing die.

[0017] Furthermore, an annular groove 10 is provided in the middle of the outer side of the inner mold 3 . By providing the annular groove 10 , the inner mold 3 can be easily removed from the installation cavity 7 .

[0018] Working principle: When the utility model is used for wire drawing, when the inner die is subjected to unbalanced pulling force during the wire drawing process, the inner die and the wire drawing can rotate relative to the outer die, thereby reducing the torsion caused by the unbalanced force on the drawn wire and effectively reducing the messy winding of the wire.

[0019] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A special-shaped wire drawing die structure, characterized in that: The invention comprises an upper module (1), a lower module (2) and an inner module (3), wherein the upper module (1) and the lower module (2) are assembled together to form an installation cavity (7) for installing the inner module (3), a mold hole (8) is provided in the middle of the inner module (3), the upper and lower end surfaces in the installation cavity (7) are provided with end surface rollers (12), the upper and lower side surfaces of the installation cavity (7) are provided with side surface rollers (13), the side surface of the inner module (3) is provided with a positioning block (9), the end surface of the positioning block (9) is in contact with the end surface roller (12), and the side surface of the positioning block (9) is in contact with the side surface roller (13).

2. The special-shaped wire drawing die structure according to claim 1, characterized in that: The contact surfaces of the upper module (1) and the lower module (2) are respectively provided with positioning columns (11) and positioning holes matched with the positioning columns (11).

3. The special-shaped wire drawing die structure according to claim 2, characterized in that: The upper and lower end surfaces of the upper module (1) and the lower module (2) are provided with countersunk holes (4), and screw rods (5) are inserted into the countersunk holes (4). The screw rods (5) cooperate with nuts (6) to connect and fix the upper module (1) and the lower module (2).

4. The special-shaped wire drawing die structure according to claim 3, characterized in that: An annular groove (10) is provided at the middle position of the outer side of the inner mold (3).

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