Wire traction device of cold header

Abstract

The utility model relates to the technical field of cold header wire feeding, in particular to a cold header wire traction device which comprises a fixing frame, a wire body is arranged on the front face of the fixing frame, a second connecting plate is fixedly connected to the bottom of the fixing frame, and an upper check device and a lower check device which are used for preventing the wire body from moving backwards are arranged on the front face of the fixing frame. The rotating rod is fixedly connected to the front face of the fixing frame, one end of the connecting arm is rotationally connected to the rotating rod, and the clamping arm is fixedly connected to the other end of the connecting arm. According to the wire traction device of the cold header, the connecting arms are rotationally arranged on the two rotating rods fixedly connected to the front face of the fixing frame correspondingly, the clamping arms and the anti-skid pads fixedly connected to the other ends of the connecting arms make contact with a wire body, and the clamping arms are pushed by the supporting plate and the springs so that non-return treatment can be conveniently conducted on the wire body.

Description

Technical Field

[0001] This utility model relates to the field of wire feeding technology for cold heading machines, specifically to a wire traction device for cold heading machines. Background Technology

[0002] A cold heading machine is a mechanical device used to manufacture metal parts. It primarily produces various rivets, bolts, nuts, and other parts through the cold heading process. Cold heading utilizes the plasticity of metal at room temperature, applying pressure to a metal blank using a die, causing the blank to undergo plastic deformation within the die cavity, thereby obtaining a part with the desired shape, size, and properties. This process eliminates the need for heating the metal, avoiding defects such as oxidation and decarburization caused by heating, and also results in parts with high surface quality and dimensional accuracy.

[0003] The aforementioned device lacks a structure to prevent backward movement during cold heading machine operation. This means that existing cold heading machines often use a wire guide wheel for traction and straightening during wire loading. However, due to the automatic cutting and cold heading process of the cold heading machine, the wire is loaded intermittently. After traction stops, the tractioned wire tends to retract backward due to its own stress and the pull of the large wire coil behind it, which can lead to deviations during subsequent loading and affect the cold heading process. Based on the shortcomings of existing technology, this utility model designs a wire traction device for cold heading machines. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a cold heading machine wire traction device, which has the advantage of preventing backward movement when the cold heading machine is on the wire.

[0005] This utility model provides the following technical solution: a cold heading machine wire traction device, including a fixed frame, a wire body is provided on the front of the fixed frame, a second connecting plate is fixedly connected to the bottom of the fixed frame, and two sets of anti-reverse devices are provided on the front of the fixed frame to prevent the wire body from moving backward.

[0006] A check valve, comprising a rotating rod, a connecting arm, a clamping arm, an anti-slip pad, a support plate, and a spring. The rotating rod is fixedly connected to the front of the fixed frame. One end of the connecting arm is rotatably connected to the rotating rod. The clamping arm is fixedly connected to the other end of the connecting arm. The anti-slip pad is fixedly connected to the bottom of the clamping arm. The support plate is fixedly connected to the front of the fixed frame. The spring is fixedly connected between the support plate and the connecting arm.

[0007] As a preferred embodiment of this utility model, a first connecting plate is fixedly connected to one end of the fixing frame, and a spacer plate is fixedly connected to the front side of the fixing frame.

[0008] As a preferred embodiment of this utility model, a drive motor is fixedly connected to the outer side of the second connecting plate, and the rotating shaft of the drive motor is rotatably connected to the inner side of the second connecting plate. The transmission gear is rotatably connected to the back of the fixed frame. Four through holes are opened through the fixed frame. Four rotating shafts are rotatably connected inside the through holes. Two lower driven gears are fixedly connected to the rear ends of the two bottom rotating shafts. Two upper driven gears are fixedly connected to the rear ends of the two top rotating shafts. Four traction wheels are fixedly connected to the front ends of the four rotating shafts.

[0009] As a preferred embodiment of this utility model, the main body of the wire is slidably connected to one side of the spacer plate.

[0010] As a preferred embodiment of this utility model, the traction wheel clamping transmission is connected to the main body of the wire.

[0011] In a preferred embodiment of this utility model, the transmission gear is connected to the rotating shaft of the drive motor, the transmission gear meshes with two lower driven gears, and the two sets of lower driven gears mesh with two sets of upper driven gears.

[0012] As a preferred embodiment of this utility model, the two sets of clamping arms are arranged on the upper and lower sides of the wire body, and the two sets of anti-slip pads are wrapped around the upper and lower sides of the wire body.

[0013] As a preferred embodiment of this invention, the anti-slip pad is made of flexible rubber.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This cold heading machine wire traction device works by having four sets of traction wheels rotate to drive the wire body forward. When the moving wire body pushes the upper and lower clamping arms and anti-slip pads outward under the limit of the rotating rod, it does not clamp or prevent the wire body from moving back. When the wire body moves backward due to the traction wheels stopping rotating, the slightly backward-moving wire body can drive the upper and lower clamping arms and anti-slip pads connected to it to rotate inward under the limit of the rotating rod, clamping and fixing the wire body and preventing it from moving back. At the same time, a spring supported by a support plate is fixedly connected to the outside of the connecting arm, which further improves the clamping strength and the reaction time of the backward movement prevention. This device is convenient to prevent the wire body from moving backward after traction stops. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the main structure of the traction device of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the fixing frame anti-return device of this utility model;

[0019] Figure 4 This is a schematic diagram of the check valve structure of this utility model.

[0020] In the diagram: 1. Fixing frame; 101. First connecting plate; 102. Spacer plate; 103. Wire body; 2. Second connecting plate; 201. Drive motor; 202. Transmission gear; 203. Through hole; 204. Rotating shaft; 205. Lower driven gear; 206. Upper driven gear; 207. Traction wheel; 3. Check valve; 301. Rotating rod; 302. Connecting arm; 303. Clamping arm; 304. Anti-slip pad; 305. Support plate; 306. Spring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 A cold heading machine wire traction device includes a fixed frame 1, a wire body 103 is provided on the front of the fixed frame 1, a second connecting plate 2 is fixedly connected to the bottom of the fixed frame 1, two sets of anti-return devices 3 are provided on the front of the fixed frame 1 to prevent the wire body 103 from moving backward, a first connecting plate 101 is fixedly connected to one end of the fixed frame 1, a spacer plate 102 is fixedly connected to the front of the fixed frame 1, and the wire body 103 is slidably connected to one side of the spacer plate 102.

[0023] Please see Figure 3-4 The anti-return device 3 includes a rotating rod 301, a connecting arm 302, a clamping arm 303, an anti-slip pad 304, a support plate 305, and a spring 306. The rotating rod 301 is fixedly connected to the front of the fixed frame 1. One end of the connecting arm 302 is rotatably connected to the rotating rod 301. The clamping arm 303 is fixedly connected to the other end of the connecting arm 302. The anti-slip pad 304 is fixedly connected to the bottom of the clamping arm 303. The support plate 305 is fixedly connected to the front of the fixed frame 1. The spring 306 is fixedly connected between the support plate 305 and the connecting arm 302. The clamping arm 303 is arranged on the upper and lower sides of the wire body 103. Two sets of anti-slip pads 304 are wrapped around the upper and lower sides of the wire body 103. The anti-slip pads 304 are made of flexible rubber.

[0024] By setting up a rotating rod 301, a connecting arm 302, a clamping arm 303, and an anti-slip pad 304, the wire body 103 can be moved forward within the upper and lower sets of clamping arms 303 and anti-slip pads 304. Under the limitation of the connecting arm 302 and the rotating rod 301, the clamping arm 303 and the anti-slip pad 304 can expand outward without affecting the forward movement of the wire body 103. If the wire body 103 stops and moves backward, the clamping arm 303 and the anti-slip pad 304 can quickly clamp and fix the wire body 103 under the limitation of the connecting arm 302 and the rotating rod 301. By setting up the anti-slip pad 304 and the support plate 305, the anti-slip pad 304 can always be in contact with the wire body 103 and shorten the backlash response time.

[0025] Please see Figure 2 A drive motor 201 is fixedly connected to the outer side of the second connecting plate 2, and the rotating shaft of the drive motor 201 is rotatably connected to the inner side of the second connecting plate 2. The transmission gear 202 is rotatably connected to the back of the fixed frame 1. Four through holes 203 are opened through the fixed frame 1. Four rotating shafts 204 are rotatably connected to the inside of the through holes 203. Two lower driven gears 205 are fixedly connected to the rear ends of the two bottom rotating shafts 204. Two upper driven gears 206 are fixedly connected to the rear ends of the two top rotating shafts 204. Four traction wheels 207 are fixedly connected to the front ends of the four rotating shafts 204. The traction wheels 207 clamp and drive the transmission connection to the wire body 103. The transmission gear 202 is connected to the rotating shaft of the drive motor 201. The transmission gear 202 meshes with the two lower driven gears 205. The two sets of lower driven gears 205 mesh with the two sets of upper driven gears 206.

[0026] By setting up a drive motor 201 and a transmission gear 202, four sets of traction wheels 207 are driven to rotate simultaneously to pull and feed the wire body 103. By setting up a lower driven gear 205 and an upper driven gear 206, the multi-stage transmission of the lower driven gear 205 and the upper driven gear 206 makes the rotation directions of the upper and lower traction wheels 207 opposite, thereby enabling the traction wheels 207 to pull and feed the wire body 103.

[0027] Working principle: When a cold heading machine wire traction device is used, in the initial state, the first connecting plate 101 is fixedly connected to one end of the fixed frame 1 and connected to the cold heading machine. The four sets of traction wheels 207 rotatably connected to the front of the fixed frame 1 are connected to the lower driven gear 205 and the upper driven gear 206 through the rotating shaft 204. The lower driven gear 205 and the upper driven gear 206 are driven by the transmission gear 202 and the drive motor 201 to facilitate the feeding of the wire body 103. Connecting arms 302 are rotatably connected to the two rotating rods 301 fixedly connected to the front of the fixed frame 1. The clamping arm 303 and the anti-slip pad 304 fixedly connected to the other end of the connecting arm 302 are in contact with the wire body 103. The clamping arm 303 is pushed by the support plate 305 and the spring 306 to facilitate the anti-reverse treatment of the wire body 103.

[0028] When it is necessary to prevent the main body of the wire 103 from moving backward after traction stops, firstly, when the four sets of traction wheels 207 rotate and drive the main body of the wire 103 to move forward, the moving main body of the wire 103 pushes the upper and lower sets of clamping arms 303 and anti-slip pads 304 to expand outward under the limit of the rotating rod 301, without clamping or blocking the wire body 103. When the main body of the wire 103 is pulled backward by the rear end due to the traction wheels 207 stopping rotation, the slightly backward-moving main body of the wire 103 can drive the upper and lower sets of clamping arms 303 and anti-slip pads 304 connected to it to rotate inward under the limit of the rotating rod 301, clamping and fixing the wire body 103 to prevent it from moving backward. At the same time, a spring 306 supported by the support plate 305 is fixedly connected to the outside of the connecting arm 302, further improving the clamping strength and the reaction time of backward movement prevention. This device is convenient to prevent the main body of the wire 103 from moving backward after traction stops.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wire traction device for a cold heading machine, comprising a fixing frame (1), characterized in that: The front of the fixing frame (1) is provided with a wire body (103), the bottom of the fixing frame (1) is fixedly connected with a second connecting plate (2), and the front of the fixing frame (1) is provided with two sets of anti-return devices (3) to prevent the wire body (103) from moving backward. The check device (3) includes a rotating rod (301), a connecting arm (302), a clamping arm (303), an anti-slip pad (304), a support plate (305), and a spring (306). The rotating rod (301) is fixedly connected to the front of the fixed frame (1). One end of the connecting arm (302) is rotatably connected to the rotating rod (301). The clamping arm (303) is fixedly connected to the other end of the connecting arm (302). The anti-slip pad (304) is fixedly connected to the bottom of the clamping arm (303). The support plate (305) is fixedly connected to the front of the fixed frame (1). The spring (306) is fixedly connected between the support plate (305) and the connecting arm (302).

2. The cold heading machine wire traction device according to claim 1, characterized in that: One end of the fixing frame (1) is fixedly connected to a first connecting plate (101), and the front of the fixing frame (1) is fixedly connected to a spacer plate (102).

3. The cold heading machine wire traction device according to claim 1, characterized in that: A drive motor (201) is fixedly connected to the outer side of the second connecting plate (2), and the rotating shaft of the drive motor (201) is rotatably connected to the inner side of the second connecting plate (2). The transmission gear (202) is rotatably connected to the back of the fixed frame (1). Four through holes (203) are opened through the fixed frame (1). Four rotating shafts (204) are rotatably connected to the inside of the through holes (203). Two lower driven gears (205) are fixedly connected to the rear ends of the two bottom rotating shafts (204). Two upper driven gears (206) are fixedly connected to the rear ends of the two top rotating shafts (204). Four traction wheels (207) are fixedly connected to the front ends of the four rotating shafts (204).

4. A wire traction device for a cold heading machine according to claim 2, characterized in that: The wire body (103) is slidably connected to one side of the spacer plate (102).

5. A wire traction device for a cold heading machine according to claim 3, characterized in that: The traction wheel (207) is clamped and driven onto the main body of the wire (103).

6. A wire traction device for a cold heading machine according to claim 3, characterized in that: The transmission gear (202) is connected to the rotating shaft of the drive machine (201). The transmission gear (202) meshes with two lower driven gears (205). The two sets of lower driven gears (205) mesh with two sets of upper driven gears (206).

7. A wire traction device for a cold heading machine according to claim 1, characterized in that: The two sets of clamping arms (303) are arranged on the upper and lower sides of the wire body (103), and the two sets of anti-slip pads (304) are wrapped around the upper and lower sides of the wire body (103).

8. A wire traction device for a cold heading machine according to claim 1, characterized in that: The anti-slip mat (304) is made of flexible rubber.

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