A non-rolling forming forging die and forming method for a spring

Abstract

The present invention provides a non-rolling forming forging die and forming method for a spring, wherein the forging die includes a first die and a second die. The present invention implements two forging processes through the first die and the second die respectively, which greatly simplifies the process equipment for spring processing, so that the production of springs can be realized on an ordinary crank press without the need for special spring processing equipment. In addition, the previous rolling process is a process method similar to rolling or rolling, while the present invention truly realizes the forging process method of the spring, forming a high-efficiency processing mode for the spring, which is more suitable for the mass production of spring parts in assembly line operations.

Description

Technical Field

[0001] The invention belongs to the technical field of spring coiling forming methods, and in particular relates to a non-coiling forming forging die and a forming method for a spring. Background Art

[0002] The forming method of springs is generally rolling, which requires special machine tools or equipment. Because the longitudinal feed and rotational motion required for rolling are coupled, these machine tools often require complex transmission systems. In addition, some spring rolling systems also require many manipulators to operate. In order to reduce equipment costs and simplify production processes, it is necessary to use simple molds on more general equipment to adapt to the high-efficiency processing of springs. Summary of the invention

[0003] In view of this, the object of the present invention is to provide a non-rolling forming method of a spring and a forging die thereof, wherein the forming method has fewer steps and a simple process, and saves the longitudinal feed time during spring rolling, thereby forming a highly efficient spring processing mode.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is: a non-rolling forming forging die for a spring, comprising:

[0005] The first die comprises a first upper die and a first lower die of the same structure, both of which are composed of a first die base and a plurality of first die teeth in the shape of triangular prisms arranged at intervals on the first die base, the first die teeth on the first upper die and the first die teeth on the first lower die are arranged alternately, and the first die teeth on the first upper die and the first die teeth on the first lower die are correspondingly provided with die openings for accommodating long steel wires, the first upper die and the first lower die cooperate with each other to forge the long steel wires into serpentine spring blanks;

[0006] The second die includes a second upper die and a second lower die of the same structure. The second upper die and the second lower die are both composed of a second die base and a plurality of plate-shaped second die teeth spaced apart on the second die base. The second die teeth on the second upper die are staggered with the second die teeth on the second lower die. The second upper die and the second lower die cooperate with each other to forge the serpentine spring blank into a spring part.

[0007] Furthermore, the top of the second die tooth is arc-shaped, and the width of the arc-shaped portion gradually decreases from the middle to both sides.

[0008] A forming method of a non-rolling forming forging die for a spring comprises the following steps:

[0009] Step 1: Place the long steel wire into the die openings opened on the first upper die and the first lower die, and forge the long steel wire into a serpentine spring blank through the cooperation between the first upper die and the first lower die;

[0010] Step 2: Rotate the serpentine spring blank formed in step 1 by 90° along the longitudinal axis and place it on the second die. Through the cooperation of the second upper die and the second lower die, forge the serpentine spring blank into a spring part.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention realizes two forging processes through the first die and the second die respectively, greatly simplifies the process equipment for spring processing, and enables the production of springs to be processed on an ordinary crank press without the need for special spring processing equipment. In addition, the previous rolling process is a process method similar to rolling or rolling, while the present invention truly realizes the forging process method of the spring, forming a high-efficiency processing mode for the spring, which is more suitable for the mass production of spring parts in assembly line operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the working state of the first mold in the present invention;

[0013] Figure 2 is a structural schematic diagram of a first upper mold or a first lower mold;

[0014] Figure 3 This is a schematic diagram of the working state of the second mold in the present invention;

[0015] Figure 4 It is a structural schematic diagram of a second upper mold or a second lower mold;

[0016] Figure 5 It is a schematic flow chart of a forming method of a non-rolling forming forging die for a spring according to the present invention;

[0017] Markings in the figure: 1. first mold, 101. first upper mold, 102. first lower mold, 103. first mold base, 104. first mold teeth, 105. mold mouth, 2. second mold, 201. second upper mold, 202. second lower mold, 203. second mold base, 204. second mold teeth, 3. serpentine spring blank, 4. long steel wire. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] The principle of the present invention is as follows: The present invention changes the previous processing method of spring coiling and appropriately relaxes the stringent restrictions on the spring shape including roundness and spiral lead, because these restrictions have little effect on the elastic effect of the spring, but through the simple process of two forgings, high-efficiency processing of low-cost equipment can be achieved. The original spring blank is a long steel wire. First, the long steel wire is pressed into a serpentine spring blank through the first forging, and then the serpentine spring blank is rotated 90 degrees in the longitudinal direction, and then the spring product is formed through the second forging. There are few steps and simple process, and the longitudinal feed time during spring coiling is saved, forming a high-efficiency spring processing mode.

[0020] like Figure 1-Figure 4 As shown, the non-rolling forming forging die of a spring of the present invention comprises:

[0021] The first die 1 comprises a first upper die 101 and a first lower die 102 of the same structure, both of which are composed of a first die base 103 and a plurality of first die teeth 104 in the shape of triangular prisms arranged at intervals on the first die base, the first die teeth on the first upper die and the first die teeth on the first lower die are arranged alternately, and the first die teeth on the first upper die and the first die teeth on the first lower die are correspondingly provided with die openings 105 for accommodating the long steel wire, the die openings are semicircular or arc-shaped with a curvature slightly smaller than that of the long steel wire; the first upper die and the first lower die cooperate with each other to forge the long steel wire 4 into a serpentine spring blank;

[0022] The second die 2 comprises a second upper die 201 and a second lower die 202 of the same structure. The second upper die and the second lower die are both composed of a second die base 203 and a plurality of plate-shaped second die teeth 204 spaced apart on the second die base. The second die teeth on the second upper die are staggered with the second die teeth on the second lower die. The second upper die and the second lower die cooperate with each other to forge the serpentine spring blank 3 into a spring part.

[0023] In order to achieve the best use effect, the top of the second mold tooth 204 is arc-shaped, and the width of the arc-shaped part gradually decreases from the middle to both sides.

[0024] A forming method of a non-rolling forming forging die for a spring, such as Figure 5 As shown, the following steps are included:

[0025] Step 1: Place the long steel wire 4 into the die openings 105 opened on the first upper die and the first lower die, and forge the long steel wire into a serpentine spring blank through the cooperation between the first upper die 101 and the first lower die 102;

[0026] Step 2: Rotate the serpentine spring blank 3 formed in step 1 by 90° along the longitudinal axis and place it on the second die 2. Through the cooperation of the second upper die 201 and the second lower die 202, the serpentine spring blank 3 is forged into a spring part.

[0027] The present invention realizes two forging processes through the first die and the second die respectively, greatly simplifying the process equipment of spring processing, so that the production of springs can be realized on an ordinary crank press without the need for special spring processing equipment. In addition, the previous rolling process belongs to a process method similar to rolling or rolling, while the present invention truly realizes the forging process method of the spring, forming a high-efficiency processing mode of the spring, which is more suitable for the mass production of spring parts in assembly line operations.

[0028] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A non-rolling forming forging die for a spring, characterized in that: include: The first die comprises a first upper die and a first lower die of the same structure, both of which are composed of a first die base and a plurality of first die teeth in the shape of triangular prisms arranged at intervals on the first die base, the first die teeth on the first upper die and the first die teeth on the first lower die are arranged alternately, and the first die teeth on the first upper die and the first die teeth on the first lower die are correspondingly provided with die openings for accommodating long steel wires, the first upper die and the first lower die cooperate with each other to forge the long steel wires into serpentine spring blanks; The second die comprises a second upper die and a second lower die of the same structure. The second upper die and the second lower die are both composed of a second die base and a plurality of second plate-shaped die teeth spaced apart on the second die base. The second die teeth on the second upper die are staggered with the second die teeth on the second lower die. The second upper die and the second lower die cooperate with each other to forge the serpentine spring blank into a spring part.

2. The non-rolling forming forging die for a spring according to claim 1, characterized in that: The top of the second die tooth is arc-shaped, and the width of the arc-shaped portion gradually decreases from the middle to both sides.

3. The forming method of a non-rolling forming forging die for a spring according to claim 1, characterized in that: The following steps are involved: Step 1: Place the long steel wire into the die openings opened on the first upper die and the first lower die, and forge the long steel wire into a serpentine spring blank through the cooperation between the first upper die and the first lower die; Step 2: Rotate the serpentine spring blank formed in step 1 by 90 degrees along the longitudinal axis and place it on the second die. Through the cooperation of the second upper die and the second lower die, forge the serpentine spring blank into a spring part.

Images