Automatic feeding type nut cold header

Abstract

The utility model relates to the technical field of cold heading machines, and provides an automatic feeding type nut cold heading machine which comprises a cold heading machine body and a feeding frame, the feeding frame is arranged outside the cold heading machine body, driving pushing assemblies are arranged on the two sides of the feeding frame, a feeding correcting assembly is arranged at the outer end of the feeding frame, and a bottom frame is fixed to the bottom of the feeding frame. A propelling motor is arranged at the bottom of the bottom frame, side holes are formed in the two sides of the feeding frame, and propelling wheels are rotationally connected into the side holes. By means of the technical scheme, the problems that according to a common cold header in the related technology, bars or wires of different sizes cannot be conveniently and rapidly fed and used, the bars or the wires cannot be conveniently clamped and fixed during feeding, feeding is not stable, machining and using are affected, and the bars or the wires are prone to being disengaged from the cold header are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cold heading machines, and particularly to an automatic feeding type nut cold heading machine. Background Art

[0002] A cold heading machine is a forging and forming device that thickens the top of a bar or wire rod, and is specifically used for mass production of automotive parts, motor parts, bolts, etc. The cold heading machine uses the cold heading method to upset the heads of bolts and screws, which can minimize cutting work and directly form the required shape and size. It can not only save a large amount of materials, but also greatly improve production efficiency and significantly improve the mechanical strength of the upset parts;

[0003] Generally, a cold heading machine is not convenient for quickly automatically feeding bars or wire rods of different sizes. When feeding, it is inconvenient to clamp and fix the bars or wire rods, and the feeding is unstable, which affects the processing and use, and the bars or wire rods are easy to break away from the cold heading machine.

[0004] Therefore, improvements are made to the above problems. Content of the Utility Model

[0005] The utility model provides an automatic feeding type nut cold heading machine, which solves the problems in the related art that a general cold heading machine is not convenient for quickly automatically feeding bars or wire rods of different sizes, is inconvenient to clamp and fix the bars or wire rods during feeding, has unstable feeding, affects the processing and use, and the bars or wire rods are easy to break away from the cold heading machine.

[0006] The technical solution of the utility model is as follows: including

[0007] A cold heading machine main body and a feeding rack, the feeding rack is arranged outside the cold heading machine main body;

[0008] A driving and pushing component, the driving and pushing component is arranged on both sides of the feeding rack;

[0009] A feeding correction component, the feeding correction component is arranged at the outer end of the feeding rack;

[0010] The driving and pushing component includes a bottom rack, the bottom rack is fixed at the bottom of the feeding rack, a propulsion motor is arranged at the bottom of the bottom rack, through holes are formed on both sides of the feeding rack, and propulsion wheels are rotatably connected in the through holes.

[0011] As a further technical solution, one side of the propulsion wheel is connected to the output end of the propulsion motor, transmission gears are arranged at the lower ends of the propulsion wheels, the transmission gears are meshed with each other, a pair of fixing plates are arranged inside the feeding rack, and a round tube is arranged between the fixing plates.

[0012] As a further technical solution, the feeding correction assembly includes a pair of bottom plates fixed to both sides of the bottom surface of the cold heading machine body. A pair of cross bars are fixedly connected between the bottom plates. A moving seat is slidably sleeved on the cross bars, and correction springs are sleeved at both ends of the cross bars.

[0013] As a further technical solution, a pair of clamping wheels are rotatably connected to the surface of the moving seat. Grooves are formed on both sides inside the feeding frame, side holes are formed in the grooves, fastening bolts are movably sleeved and connected in the side holes, and a connecting block is screwed to one end of the fastening bolt.

[0014] As a further technical solution, a pressing rod is rotatably connected between the connecting blocks, and a cross brace is rotatably connected between the inner surfaces of the feeding frame. The cross brace is located directly below the pressing rod.

[0015] As a further technical solution, the contact surfaces of the propulsion wheel and the clamping wheel are both concave arc-shaped structural surfaces.

[0016] As a further technical solution, the feeding frame is integrally in a Y-shaped structure, and the clamping wheels are located at the outermost ends of the feeding frame.

[0017] As a further technical solution, the circular tube is located in the central part of the feeding frame, and the inner diameter of the circular tube matches the diameter of the bar stock.

[0018] As a further technical solution, a pair of connecting ears are provided on the side end face of the feeding frame, and the connecting ears are fixed to the surface of the cold heading machine body by bolts.

[0019] The working principle and beneficial effects of the present utility model are as follows:

[0020] 1. In the present utility model, a driving and pushing assembly is provided. Through the interaction of structures such as a propulsion motor, a propulsion wheel, a transmission gear, and a circular tube, when the bar stock is pushed into the cold heading machine body through the circular tube and the two propulsion wheels, it can ensure that the bar stock is in the correct position and will not deflect, making the feeding more stable.

[0021] 2. In the present utility model, a feeding correction assembly is provided. Through the interaction of structures such as cross bars, correction springs, clamping wheels, fastening bolts, pressing rods, and cross braces, when the bar stock is between the clamping wheels, it can be supported at the bottom by the elastic force of the correction springs, and the clamping wheels can move slightly left and right, avoiding jamming caused by excessive bending angle of the bar stock, and improving the stability of feeding. Description of the Drawings

[0022] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0023] Figure 1 It is a schematic structural diagram of the present utility model;

[0024] Figure 2 Is an isometric view of the present utility model;

[0025] Figure 3 Is a sectional view of the present utility model;

[0026] Figure 4 Is an attached Figure 1 Partial enlarged view of part A in the figure;

[0027] In the figure: 1. Cold heading machine main body; 2. Feeding rack; 3. Driving and pushing component; 3-1. Bottom frame; 3-2. Propulsion motor; 3-3. Through hole; 3-4. Propulsion wheel; 3-5. Transmission gear; 3-6. Fixed plate; 3-7. Round tube; 4. Feeding correction component; 4-1. Bottom plate; 4-2. Cross bar; 4-3. Moving seat; 4-4. Correction spring; 4-5. Clamping wheel; 4-6. Groove; 4-7. Side hole; 4-8. Tightening bolt; 4-9. Connecting block; 4-10. Pressing rod; 4-11. Cross brace; 5. Connecting ear. Specific implementation mode

[0028] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present utility model.

[0029] As Figures 1 to 4 shown, this embodiment proposes an automatic feeding type nut cold heading machine, including

[0030] The cold heading machine main body 1 and the feeding rack 2, and the feeding rack 2 is arranged outside the cold heading machine main body 1;

[0031] The driving and pushing component 3, and the driving and pushing component 3 is arranged on both sides of the feeding rack 2;

[0032] The feeding correction component 4, and the feeding correction component 4 is arranged at the outer end of the feeding rack 2;

[0033] The driving and pushing component 3 includes a bottom frame 3-1, the bottom frame 3-1 is fixed at the bottom of the feeding rack 2, a propulsion motor 3-2 is arranged at the bottom of the bottom frame 3-1, through holes 3-3 are opened on both sides of the feeding rack 2, a propulsion wheel 3-4 is rotatably connected in the through hole 3-3, one side of the propulsion wheel 3-4 is connected to the output end of the propulsion motor 3-2, transmission gears 3-5 are arranged at the lower ends of the propulsion wheels 3-4, the transmission gears 3-5 are meshed with each other, and a pair of fixed plates 3-6 are arranged in the feeding rack 2, and a round tube 3-7 is arranged between the fixed plates 3-6.

[0034] In this embodiment, in order to achieve the effect of being able to clamp the bar stock and feed it stably, a driving and pushing assembly 3 is designed. A chassis 3-1 is provided at the bottom of the feeding rack 2 and a propulsion motor 3-2 is installed to provide the feeding power. Side holes 4-7 are opened on both sides of the feeding rack 2. A propulsion wheel 3-4 is rotatably connected in the side holes 4-7. The lower end of the rotating shaft of the propulsion wheel 3-4 is at the bottom of the feeding rack 2. One of the propulsion wheels 3-4 is connected to the propulsion motor 3-2 and can be driven to rotate. Transmission gears 3-5 are provided on the rotating shafts of both propulsion wheels 3-4 and are meshed with each other. The bar stock is clamped between the two propulsion wheels 3-4. The bar stock can be pushed by the rotation of the propulsion wheels 3-4. Fixed plates 3-6 are provided on both sides inside the feeding rack 2. A round tube 3-7 is provided between the fixed plates 3-6. The bar stock passes through the round tube 3-7 and then enters the cold heading machine main body 1.

[0035] Furthermore, the feeding and straightening assembly 4 includes a pair of bottom plates 4-1. The bottom plates 4-1 are fixed on both sides of the bottom surface of the cold heading machine main body 1. A pair of cross bars 4-2 are fixedly connected between the bottom plates 4-1. A moving seat 4-3 is slidably sleeved on the cross bars 4-2. Correction springs 4-4 are sleeved at both ends of the cross bars 4-2. A pair of clamping wheels 4-5 are rotatably connected to the surface of the moving seat 4-3. Grooves 4-6 are opened on both sides inside the feeding rack 2. Through holes 3-3 are opened in the grooves 4-6. A fastening bolt 4-8 is movably sleeved and connected in the through holes 3-3. One end of the fastening bolt 4-8 is screwed and connected with a connecting block 4-9. A pressing rod 4-10 is rotatably connected between the connecting blocks 4-9. A cross brace 4-11 is rotatably connected between the inner surfaces of the feeding rack 2. The cross brace 4-11 is located directly below the pressing rod 4-10.

[0036] In this embodiment, in order to achieve the effect of being able to assist in straightening the bent bar stock, a feeding and straightening assembly 4 is designed. Two bottom plates 4-1 are provided at the bottom of the feeding rack 2. Two cross bars 4-2 are provided between the bottom plates 4-1. A movable seat 4-3 that can move left and right is slidably connected to the cross bars 4-2. A pair of clamping wheels 4-5 are rotatably connected to the surface of the movable seat 4-3. The bar stock is clamped in the middle by the clamping wheels 4-5. Correction springs 4-4 are installed at both ends of the cross bars 4-2. The elastic force of the correction springs 4-4 is relatively large, supporting both sides of the movable seat 4-3. When the bar stock is fed, the position of the bar stock can be corrected by the pressing wheels, and there is a margin through the correction springs 4-4 to avoid jamming caused by too large a bending angle. A pressing rod 4-10 and a cross brace 4-11 are also provided. The cross brace 4-11 cannot move and can only rotate. Connecting blocks 4-9 are provided on both sides of the pressing rod 4-10. Grooves 4-6 and side holes 4-7 are opened on both sides inside the feeding rack 2. The connecting grooves are located in the grooves 4-6. A fastening bolt 4-8 that is screwed and connected with the connecting block 4-9 is installed outside the feeding rack 2 through the side holes 4-7, which can adjust the height of the pressing rod 4-10 and press the bar stock longitudinally to make the feeding more stable.

[0037] Further, the contact surfaces of the propulsion wheel 3-4 and the clamping wheel 4-5 are both concave arc-shaped structural surfaces.

[0038] In this embodiment, through the arc-shaped structural surface, the propulsion wheel 3-4 and the clamping wheel 4-5 fit more closely to the surface of the bar stock, and the anti-slip effect is better.

[0039] Further, the overall shape of the feeding rack 2 is a Y-shaped structure, and the clamping wheel 4-5 is located at the outermost end of the feeding rack 2.

[0040] In this embodiment, through the Y-shaped structure, the opening size at the front end of the feeding rack 2 is increased, so that the moving seat 4-3 has sufficient left and right movement.

[0041] Further, the round tube 3-7 is located in the central part of the feeding rack 2, and the inner diameter of the round tube 3-7 matches the diameter of the bar stock.

[0042] In this embodiment, by installing the round tube 3-7, the bar stock can pass through the round tube 3-7, which has a straightening effect on the bar stock and the feeding stability.

[0043] Further, a pair of connecting ears 5 are provided on the side end face of the feeding rack 2, and the connecting ears 5 are fixed to the surface of the cold heading machine main body 1 by bolts.

[0044] In this embodiment, by providing two connecting ears 5, bolts can be inserted into the connecting ears 5 to connect with the cold heading machine main body 1.

[0045] When feeding is required, insert the bar stock into the feeding rack 2, pass through the clamping wheel 4-5, the propulsion wheel 3-4 and the round tube 3-7 and then enter the cold heading machine main body 1. Turn the fastening bolt 4-8 and then move the pressing rod 4-10 downward to clamp the bar stock between the pressing rod 4-10 and the cross brace 4-11. Then tighten the fastening bolt 4-8. When feeding, start the propulsion motor 3-2, and the propulsion wheel 3-4 rotates to push the bar stock into the cold heading machine main body 1. The bent part can be preliminarily straightened by the clamping wheel 4-5 for the larger bent part of the bar stock first, and then completely straightened by the propulsion wheel 3-4 and the round tube 3-7, and continuous feeding can be achieved.

[0046] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic loading nut cold heading machine, characterized in that: include A cold heading machine body (1) and a feed rack (2), wherein the feed rack (2) is arranged outside the cold heading machine body (1); A driving and pushing assembly (3), wherein the driving and pushing assembly (3) is arranged on both sides of the feeding frame (2); A feed correction component (4), wherein the feed correction component (4) is arranged at the outer end of the feed frame (2); The driving and pushing assembly (3) comprises a base frame (3-1), the base frame (3-1) is fixed to the bottom of the feeding frame (2), a propulsion motor (3-2) is arranged at the bottom of the base frame (3-1), through holes (3-3) are opened on both sides of the feeding frame (2), and a propulsion wheel (3-4) is rotatably connected in the through hole (3-3).

2. The automatic loading nut cold heading machine according to claim 1, characterized in that: The propulsion wheel (3-4) on one side is connected to the output end of the propulsion motor (3-2), and a transmission gear (3-5) is provided at the lower end of each propulsion wheel (3-4). The transmission gears (3-5) are meshed with each other. A pair of fixed plates (3-6) are provided in the feed rack (2), and a round tube (3-7) is provided between the fixed plates (3-6).

3. The automatic loading nut cold heading machine according to claim 1, characterized in that: The feed correction component (4) comprises a pair of base plates (4-1), the base plates (4-1) are fixed on both sides of the bottom surface of the cold heading machine body (1), a pair of cross bars (4-2) are fixedly connected between the base plates (4-1), a moving seat (4-3) is slidably mounted on the cross bars (4-2), and correction springs (4-4) are mounted on both ends of the cross bars (4-2).

4. The automatic loading nut cold heading machine according to claim 3, characterized in that: A pair of clamping wheels (4-5) are rotatably connected to the surface of the movable seat (4-3), grooves (4-6) are provided on both sides of the feed frame (2), side holes (4-7) are provided in the grooves (4-6), a fastening bolt (4-8) is movably connected in the side hole (4-7), and one end of the fastening bolt (4-8) is screwed and connected to a connecting block (4-9).

5. The automatic loading nut cold heading machine according to claim 4, characterized in that: A lower pressing rod (4-10) is rotatably connected between the connecting blocks (4-9), and a cross brace rod (4-11) is rotatably connected between the inner surfaces of the feed rack (2), and the cross brace rod (4-11) is located directly below the lower pressing rod (4-10).

6. The automatic loading type nut cold heading machine according to claim 4, characterized in that: The contact surfaces of the propulsion wheel (3-4) and the clamping wheel (4-5) are both concave arc-shaped structural surfaces.

7. The automatic loading type nut cold heading machine according to claim 4, characterized in that: The feeding rack (2) is in a Y-shaped structure as a whole, and the clamping wheels (4-5) are located at the outermost end of the feeding rack (2).

8. The automatic loading type nut cold heading machine according to claim 2, characterized in that: The round tube (3-7) is located at the central part of the feed rack (2), and the inner diameter of the round tube (3-7) matches the diameter of the rod.

9. The automatic loading nut cold heading machine according to claim 1, characterized in that: A pair of connecting ears (5) are provided on the side end surface of the feed rack (2), and the connecting ears (5) are fixed to the surface of the cold heading machine body (1) by means of bolts.

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