Spring return device of forging machine

Abstract

The utility model relates to the technical field of forging technology, in particular to a spring return device of a forging machine, which comprises an inner casing and an outer support, the lower end of the inner casing is in threaded connection with a fixing part, and two ends of the fixing part are fixed on the outer support. The forging rod penetrates through the interior of the inner shell in the axial direction, the return spring is arranged around the forging rod, transition to next-frequency forging and pressing can be rapidly achieved, and the forging efficiency is improved; the return spring is formed by spirally coiling a hollow wire tube, and force transmission plates are arranged at the two ends of the return spring, so that the dead weight of the forging machine is reduced while the rigidity and the flexibility are ensured; the lower end of the forging rod is connected with the forging head which penetrates through the center of the fixing piece and extends downwards. Transition to next-frequency forging and pressing can be rapidly achieved, forging efficiency is improved, the return spring is arranged in the inner shell, stability in the return process is guaranteed, and the forging and pressing effect is enhanced.

Description

Technical Field

[0001] This utility model relates to the technical field of forging technology, and in particular to a spring return device for a forging machine. Background Technology

[0002] Forging machines are mainly used for forging workpieces. They use dies to restrict metal materials, and hydraulic presses drive the forging head to hammer multiple times, forging the malleable metal material into shape. After a single hammering, the hydraulic press needs to drive the forging head back a sufficient distance to ensure the next hammering. This return method prolongs the forging time and reduces forging efficiency. At the same time, the existing forging head directly and rigidly collides with the metal material, which can easily lead to damage to the forging machine and affect the forging effect. Utility Model Content

[0003] In order to improve the defects of forging machines in the above-mentioned background art during use, this utility model provides a spring return device for a forging machine.

[0004] The spring return device for a forging machine provided by this utility model adopts the following technical solution:

[0005] A spring return device for a forging machine includes an inner housing and an outer support. The lower end of the inner housing is threadedly connected to a fixing member, and both ends of the fixing member are fixed to the outer support. A forging rod passes through the inner housing along the axial direction, and a return spring is arranged around the forging rod. The lower end of the forging rod is connected to a forging head, and the forging head extends downward through the center of the fixing member. The upper end of the forging rod is connected to the output end of a hydraulic press.

[0006] Preferably, force transmission plates are provided at both ends of the return spring, and the forged rod is arranged in a stepped manner with the upper section of the forged rod pressing against the force transmission plate located on the upper side of the return spring.

[0007] Preferably, the return spring is formed by spirally winding a hollow wire tube.

[0008] Preferably, the end of the wire tube is connected to an external pump.

[0009] Preferably, the lower end of the inner shell is provided with an external thread, and a drilled hole is provided through the center of the fixing member. The front part of the inner side of the drilled hole is provided with an internal thread that mates with the external thread.

[0010] Preferably, the lower end of the inner housing is locked and fixed to the threaded connection position with the fixing member by a stop block. The rotational feed direction of the stop block relative to the external thread is opposite to the rotational feed direction of the fixing member relative to the external thread, so as to prevent loosening and falling off during use.

[0011] Preferably, the length of the inner shell is slightly smaller than the length of the return spring in the relaxed state, and the return spring still has an overall tightening force in the relaxed state.

[0012] In summary, this utility model has the following beneficial technical effects:

[0013] 1. This utility model features a return spring surrounding the forging rod, which enables a rapid transition to the next forging frequency, improving forging efficiency. The return spring is integrated into the inner shell, ensuring stability during the return process. The return spring also provides a buffering effect during forging, enhancing the forging effect and extending the service life of the forging machine.

[0014] 2. In this utility model, the return spring is formed by spirally winding a hollow wire tube, which reduces the weight of the forging machine while ensuring rigidity and flexibility. Attached Figure Description

[0015] Figure 1 This is an overall external structural schematic diagram of a spring return device for a forging machine according to an embodiment of the present utility model;

[0016] Figure 2 This is a perspective view of the internal structure of a spring return device for a forging machine according to an embodiment of the present invention;

[0017] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 This is a schematic diagram of the return spring according to an embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of the structure of the forged rod according to an embodiment of the present invention.

[0020] Explanation of reference numerals in the attached drawings: 1. Inner shell; 2. Outer support; 3. Fixing component; 4. Forging rod; 5. Return spring; 6. Forging head; 7. Hydraulic press; 8. Force transmission plate; 9. Wire tube; 10. Pump; 11. External thread; 12. Drill hole; 13. Internal thread; 14. Stop block. Detailed Implementation

[0021] The following combination Figures 1-5 The present invention will be described in further detail below.

[0022] This utility model discloses a spring return device for a forging machine.

[0023] Reference Figure 1 , Figure 2A spring return device for a forging machine includes an inner housing 1 and an outer support 2. The lower end of the inner housing 1 is threadedly connected to a fixing member 3, and both ends of the fixing member 3 are fixed to the outer support 2. A forging rod 4 passes through the inner housing 1 along the axial direction, and a return spring 5 is arranged around the forging rod 4. The return spring 5 is arranged inside the inner housing 1 to ensure stability during the return process. The lower end of the forging rod 4 is connected to a forging head 6, and the forging head 6 extends downward through the center of the fixing member 3. The upper end of the forging rod 4 is connected to the output end of a hydraulic press 7.

[0024] Reference Figure 2 Both ends of the return spring 5 are equipped with force transmission plates 8. The forging rod 4 is stepped and the upper section of the forging rod 4 presses against the force transmission plate 8 located on the upper side of the return spring 5. During forging, the return spring 5, together with the force transmission plate 8, plays a certain buffering role, which enhances the forging effect and extends the service life of the forging machine.

[0025] Reference Figure 2 , Figure 4 The return spring 5 is formed by spirally winding a hollow wire tube 9, which reduces the weight of the forging machine.

[0026] Reference Figure 1 , Figure 4 The wire tube 9 is hollow. According to the usage requirements, a pump 10 is connected to the end of the wire tube 9. The wire tube 9 can be filled with cooling gas or cooling liquid. While ensuring rigidity and flexibility, it reduces the weight of the forging machine and cools the return spring 5.

[0027] Reference Figure 2 , Figure 3 The lower end of the inner shell 1 is provided with an external thread 11, and the center of the fastener 3 is provided with a drill hole 12. The front part of the inner side of the drill hole 12 is provided with an internal thread 13 that mates with the external thread 11.

[0028] Reference Figure 2 , Figure 3 The lower end of the inner housing 1 is threadedly connected to the fixing part 3 by a stop block 14. The rotational feed direction of the stop block 14 relative to the external thread 11 is opposite to the rotational feed direction of the fixing part 3 relative to the external thread 11. Tightening them in opposite directions locks the inner housing 1 and the fixing part 3, preventing loosening during use.

[0029] Reference Figure 2 The length of the inner shell 1 is slightly less than the length of the return spring 5 in the relaxed state. When the return spring 5 is in the relaxed state, its two ends are abutted against the inner shell 1 through the force transmission plate 8, and there is still an overall tightening force.

[0030] The implementation principle of the spring return device of the forging machine in this embodiment of the utility model is as follows: Assemble the spring return device, with the lower end of the inner housing 1 threadedly connected to the fixing part 3, the fixing part 3 fixed on the outer support 2, a return spring 5 placed inside the inner housing 1 and passing through the forging rod 4, and the forging head 6 aligned with the mold; place the malleable metal material in the mold, the hydraulic press 7 drives the forging rod 4 to output, the upper section of the stepped forging rod 4 presses against the force transmission plate 8 located above the return spring 5, the return spring 5 is in a compressed state, there is elastic stress at both ends, the return spring plays a certain buffering role during forging, and at the same time the forging head 6 hammers the metal material; at this time, the return spring 5 pops out to both ends, releasing the elastic stress and driving the forging rod 4 upward, realizing the transition to the next frequency of forging; multiple hammer blows forge the malleable metal material into shape.

[0031] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A spring return device for a forging machine, characterized in that: It includes an inner shell (1) and an outer support (2). The lower end of the inner shell (1) is threaded to a fixing member (3). Both ends of the fixing member (3) are fixed to the outer support (2). A forging rod (4) runs through the inner shell (1) along the axial direction. A return spring (5) is arranged around the forging rod (4). The lower end of the forging rod (4) is connected to a forging head (6), and the forging head (6) extends downward through the center of the fixing member (3). The upper end of the forging rod (4) is connected to the output end of a hydraulic press (7).

2. The spring return device for a forging machine according to claim 1, characterized in that: Both ends of the return spring (5) are provided with force transmission plates (8), and the forging rod (4) is arranged in a stepped manner with the upper section of the forging rod (4) pressing against the force transmission plate (8) located on the upper side of the return spring (5).

3. The spring return device for a forging machine according to claim 1, characterized in that: The return spring (5) is formed by spirally winding a hollow wire tube (9).

4. The spring return device for a forging machine according to claim 3, characterized in that: The end of the wire tube (9) is connected to an external pump (10).

5. The spring return device for a forging machine according to claim 1, characterized in that: The lower end of the inner shell (1) is provided with an external thread (11), and the center of the fixing member (3) is provided with a drill hole (12). The front part of the inner side of the drill hole (12) is provided with an internal thread (13) and it cooperates with the external thread (11).

6. The spring return device for a forging machine according to claim 5, characterized in that: The lower end of the inner shell (1) is threadedly connected to the fixing member (3) by a stop block (14). The rotational feed direction of the stop block (14) relative to the external thread (11) is opposite to the rotational feed direction of the fixing member (3) relative to the external thread (11).

7. The spring return device for a forging machine according to claim 1, characterized in that: The length of the inner shell (1) is less than the length of the return spring (5) in the relaxed state.

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