Metal spring forming device

Abstract

The utility model discloses a metal spring forming device, which relates to the technical field of processing equipment and comprises an extrusion die, circulation cavities are dug at two ends in the extrusion die, a through cavity is dug at one end of the extrusion die between the circulation cavities, and liquid outlet cavities are dug at the other end of the extrusion die between the circulation cavities. The liquid inlet cavity, the penetrating cavity, the circulating cavity and the liquid outlet cavity form a cooling liquid flowing cavity, the liquid inlet pipe connected to the liquid inlet cavity serves as a cooling liquid entering position, the liquid outlet pipe connected to the liquid outlet cavity serves as a cooling liquid discharging position, and cooling liquid is discharged into the liquid inlet cavity from the liquid inlet pipe, flows through the penetrating cavity, the circulating cavity and the liquid outlet cavity and then is discharged through the liquid inlet pipe. And in the flowing process of the cooling liquid, the high temperature on the extrusion die can be driven, so that the extrusion die can perform extrusion type winding on a steel wire which is stripped from the die under the condition of low temperature, and the influence of the high temperature on the quality of a spring formed by winding the steel wire is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of processing equipment, in particular to a metal spring forming device. Background Art

[0002] Metal springs are designed based on actual needs, with parameters such as the shape, size, and working load of the springs determined accordingly. After the design is completed, it is necessary to make corresponding molds or fixtures to fix and position the steel wire during the winding process. The pre-treated metal material is placed in the spring winding machine, and the steel wire is wound along a predetermined trajectory through the gears, cams and other mechanisms inside the machine. During the winding process, it is necessary to control parameters such as the winding speed, tension and angle to ensure the accuracy and quality of the spring.

[0003] In the process of implementing the solution, the inventors found that the following problems existed in the prior art and have not been well solved: when the spring wire is ejected from the mold, it will be extruded and wound through another mold (also called an extrusion mold or an extrusion block). The longer the extrusion time of the mold, the more turns of winding, and the longer the length of the spring. However, long-term extrusion will cause the heat on the mold to increase due to the long friction time, and the single gap of the spring winding is relatively short, and the number of spring windings is relatively large, resulting in the temperature on the mold becoming higher and higher. The high temperature will have a greater impact on the quality of the wound steel wire. Utility Model Content

[0004] The main purpose of the utility model is to provide a metal spring forming device, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A metal spring forming device comprises an extrusion die, wherein both ends of the extrusion die are provided with flow cavities, one end of the extrusion die located between the flow cavities is provided with a through cavity, the other end of the extrusion die located at the flow cavity is provided with a liquid outlet cavity, the middle end of the extrusion die is provided with a liquid inlet cavity, the end of the extrusion die located outside the liquid inlet cavity is connected to a liquid inlet pipe, and the end of the extrusion die located outside the liquid outlet cavity is connected to a liquid outlet pipe.

[0007] Preferably, both ends of the through cavity are respectively communicated with the circulation cavity, and the circulation cavity, the liquid outlet cavity, the liquid outlet pipe, the through cavity, the liquid inlet cavity and the liquid inlet pipe are communicated with each other.

[0008] Preferably, the extrusion die is provided with an extension cavity on a side of the circulation cavity away from the liquid outlet cavity and the liquid inlet cavity, and the circulation cavity and the extension cavity are in communication.

[0009] Preferably, support plates are provided at both ends of the extrusion die at the liquid outlet pipe and the liquid inlet pipe, screws are fixed to the outer walls of the extrusion die at the four corners of the support plates, and nuts are threadedly connected to the outer walls of the screws.

[0010] Preferably, the screw rods are respectively connected to four corners of the support plate, and the nuts are respectively located on a side of the support plate away from the extrusion die.

[0011] Preferably, the support plates are each provided with a plurality of through holes, the two liquid outlet pipes are respectively connected with the through holes on the support plates, the liquid inlet pipe is respectively connected with the through holes on one of the support plates, and the inner diameter of the through holes matches the outer diameter of the liquid outlet pipe and the liquid inlet pipe.

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

[0013] 1. The liquid inlet cavity, the through cavity, the flow cavity and the liquid outlet cavity form a flow cavity for the coolant. The liquid inlet pipe connected to the liquid inlet cavity serves as the coolant entry position, and the liquid outlet pipe connected to the liquid outlet cavity serves as the coolant discharge position. The coolant is discharged into the liquid inlet cavity from the liquid inlet pipe, flows through the through cavity, the flow cavity and the liquid outlet cavity, and then is discharged through the liquid inlet pipe. In the process of the coolant flowing through, it can drive the high temperature on the extrusion die, so that the extrusion die can extrude and wind the steel wire out of the die at a low temperature, avoiding the high temperature from affecting the quality of the spring formed by winding the steel wire.

[0014] 2. The screw on the extrusion die passes through the support plate and is threadedly connected to the nut so that the extrusion die and the support plate can be assembled together. The liquid outlet pipe and the liquid inlet pipe can respectively pass through the through holes on the support plate, so that the liquid outlet pipe and the liquid inlet pipe can maintain stability during frequent movements with the help of the support plate, avoiding the problem of separation from the liquid outlet cavity and the liquid inlet cavity due to shaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a metal spring forming device of the utility model;

[0016] Figure 2 This is a schematic diagram of a half-section structure of an extrusion die of a metal spring forming device of the utility model;

[0017] Figure 3 It is a cross-sectional structural schematic diagram of an extrusion die of a metal spring forming device of the utility model located at a through cavity and a liquid inlet cavity;

[0018] Figure 4 The utility model is a schematic diagram of the separation structure of an extrusion die and a support plate of a metal spring forming device.

[0019] In the figure: 1, extrusion die; 2, circulation cavity; 21, extension cavity; 3, liquid outlet cavity; 4, liquid outlet pipe; 5, through cavity; 6, liquid inlet cavity; 7, liquid inlet pipe; 8, screw; 9, nut; 10, support plate; 11, through hole. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] like Figure 1-4 As shown, a metal spring forming device includes an extrusion die 1, both ends of the extrusion die 1 are bored with flow cavities 2, one end of the extrusion die 1 located between the flow cavities 2 is bored with a through cavity 5, the other end of the extrusion die 1 located at the flow cavity 2 is bored with a liquid outlet cavity 3, the middle end of the extrusion die 1 located at the through cavity 5 is bored with a liquid inlet cavity 6, the end of the extrusion die 1 located outside the liquid inlet cavity 6 is connected to a liquid inlet pipe 7, and the end of the extrusion die 1 located outside the liquid outlet cavity 3 is connected to a liquid outlet pipe 4.

[0022] Specifically, both ends of the through cavity 5 are respectively communicated with the circulation cavity 2 , and the circulation cavity 2 , the liquid outlet cavity 3 , the liquid outlet pipe 4 , the through cavity 5 , the liquid inlet cavity 6 and the liquid inlet pipe 7 are communicated with each other.

[0023] Specifically, the extrusion die 1 is provided with an extension cavity 21 on one side of the circulation cavity 2 away from the liquid outlet cavity 3 and the liquid inlet cavity 6. The circulation cavity 2 and the extension cavity 21 are connected to extend the cooling area so that the coolant can take away more temperature.

[0024] Specifically, support plates 10 are provided at both ends of the extrusion die 1 at the positions of the liquid outlet pipe 4 and the liquid inlet pipe 7, screws 8 are fixed on the outer wall of the extrusion die 1 at the four corners of the support plate 10, and nuts 9 are threadedly connected to the outer walls of the screws 8. The screws 8 are respectively connected to the four corners of the support plate 10, and the nuts 9 are respectively located on the side of the support plate 10 away from the extrusion die 1. A plurality of through holes 11 are drilled on the support plate 10, and the two liquid outlet pipes 4 are respectively connected to the through holes 11 on the support plate 10, and the liquid inlet pipe 7 is respectively connected to the through holes 11 on one of the support plates 10. The inner diameter of the through hole 11 matches the outer diameter of the liquid outlet pipe 4 and the liquid inlet pipe 7, respectively, so as to support the liquid outlet pipe 4 and the liquid inlet pipe 7.

[0025] Working principle: the liquid inlet cavity 6, the through cavity 5, the circulation cavity 2, and the liquid outlet cavity 3 form a flow cavity for the coolant. The liquid inlet pipe 7 connected to the liquid inlet cavity 6 serves as the coolant entry position, and the liquid outlet pipe 4 connected to the liquid outlet cavity 3 serves as the coolant discharge position. The coolant is discharged into the liquid inlet cavity 6 from the liquid inlet pipe 7, flows through the through cavity 5, the circulation cavity 2, and the liquid outlet cavity 3, and then is discharged through the liquid inlet pipe 7. During the coolant flowing through, it can drive the high temperature on the extrusion die 1, so that the extrusion die 1 can be at a low temperature for the outlet. The steel wire of the die is extrusion-wound to avoid high temperature affecting the quality of the spring formed by winding the steel wire. The screw 8 on the extrusion die 1 passes through the support plate 10 and is threadedly connected with the nut 9, so that the extrusion die 1 and the support plate 10 can be assembled together. The liquid outlet pipe 4 and the liquid inlet pipe 7 can respectively pass through the through hole 11 on the support plate 10, so that the liquid outlet pipe 4 and the liquid inlet pipe 7 can maintain stability during frequent movements with the help of the support plate 10, avoiding the problem of separation from the liquid outlet cavity 3 and the liquid inlet cavity 6 due to shaking.

[0026] The circuits, electronic components and control modules involved are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the utility model does not involve improvements to software and methods.

[0027] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A metal spring forming device, comprising an extrusion die (1), characterized in that: Both ends of the extrusion die (1) are provided with flow chambers (2); one end of the extrusion die (1) located between the flow chambers (2) is provided with a through chamber (5); the other end of the extrusion die (1) located in the flow chamber (2) is provided with a liquid outlet chamber (3); the middle end of the extrusion die (1) is provided with a liquid inlet chamber (6); the end of the extrusion die (1) located outside the liquid inlet chamber (6) is connected to a liquid inlet pipe (7); and the end of the extrusion die (1) located outside the liquid outlet chamber (3) is connected to a liquid outlet pipe (4).

2. A metal spring forming device according to claim 1, characterized in that: The two ends of the through cavity (5) are respectively in communication with the circulation cavity (2); the circulation cavity (2), the liquid outlet cavity (3), the liquid outlet pipe (4), the through cavity (5), the liquid inlet cavity (6) and the liquid inlet pipe (7) are in communication with each other.

3. A metal spring forming device according to claim 1, characterized in that: The extrusion die (1) is provided with an extension cavity (21) on one side of the circulation cavity (2) away from the liquid outlet cavity (3) and the liquid inlet cavity (6), and the circulation cavity (2) and the extension cavity (21) are in communication.

4. A metal spring forming device according to claim 1, characterized in that: Support plates (10) are provided at both ends of the extrusion die (1) at the positions of the liquid outlet pipe (4) and the liquid inlet pipe (7), and screw rods (8) are fixed to the outer walls of the extrusion die (1) at the four corners of the support plate (10), and nuts (9) are threadedly connected to the outer walls of the screw rods (8).

5. A metal spring forming device according to claim 4, characterized in that: The screw rod (8) is respectively connected to the four corners of the support plate (10), and the nut (9) is respectively located on the side of the support plate (10) away from the extrusion die (1).

6. A metal spring forming device according to claim 4, characterized in that: The support plate (10) is provided with a plurality of through holes (11), the two liquid outlet pipes (4) are respectively connected to the through holes (11) on the support plate (10), the liquid inlet pipe (7) is respectively connected to the through holes (11) on one of the support plates (10), and the inner diameter of the through hole (11) matches the outer diameter of the liquid outlet pipe (4) and the liquid inlet pipe (7).

Images