Metal piece punching device

Abstract

The utility model relates to the technical field of stamping equipment, and discloses a metal piece punching device which comprises a machine body, a station for part punching is arranged on the machine body, a limiting piece right opposite to the station is arranged on the machine body, and a guiding piece arranged on the limiting piece and matched with the machine body in a guiding and moving mode is arranged on the machine body. The metal part punching device further comprises a pre-tightening adjusting mechanism capable of increasing the guide movement resistance of the limiting part, and the pre-tightening adjusting mechanism can provide pre-tightening force for the limiting part on the metal part punching device. Therefore, the displacement phenomenon caused by the interaction generated when the locking piece is touched or tightened is not easily generated.

Description

Technical Field

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

[0002] A portable punching device is a mechanical equipment suitable for small sheet metal punching processing. The existing portable punching device can refer to the Chinese patent with announcement number CN217393468U, which discloses a double battery pack punching machine. The punching machine includes a body and a punching head. One side of the notch of the punching head is guided and telescopically provided with a punching movable die, and the other side is fixedly provided with a punching fixed die. The notch of the punching head is provided with a limit stopper for adjusting the depth of the part extending into the notch. A groove for guiding the limit stopper to move is provided on the side wall of the punching head, and a threaded hole is provided on the groove. A bolt connected to the threaded hole is passed through the limit stopper. A driving mechanism for driving the punching movable die to extend and retract and a battery module for powering the driving mechanism are provided in the body.

[0003] When adjusting the limit piece, it is necessary to loosen the bolt, then manually move the limit piece along the groove, and at the same time use a measuring tool to press against the end face of the limit piece to check the depth in real time. When the required depth is reached, stop moving the limit piece, and then tighten the bolt to fix it to the punching head. However, before the bolt is locked, the limit piece can move freely. Touching the limit piece by hand will cause its position to change. During the bolt locking process, the interaction between the bolt and the limit piece will also cause its position to change. At this time, people have to readjust and check the position of the limit piece to ensure that the position of the limit piece is accurate, thereby ensuring the accuracy of the punching position. Therefore, the limit piece on the existing punching machine is prone to displacement before locking, and repeated checks are required to calibrate the position. It is inconvenient to use and there is still room for improvement. Utility Model Content

[0004] In view of the shortcomings that the limit stoppers on the existing punching machines are prone to displacement and require repeated calibration to calibrate the position, the purpose of the utility model is to provide a metal punching device in which the limit stoppers are not easily displaced before being locked.

[0005] In order to solve the above technical problems, the utility model is solved by the following technical solutions:

[0006] A metal part punching device comprises a machine body, a work station for punching parts is arranged on the machine body, a limiter is arranged on the machine body facing the work station and a guide member arranged on the limiter and cooperating with the guided movement of the machine body, a locking member capable of limiting or releasing the limiter from moving along the guide is arranged between the guide member and the machine body, and the metal part punching device also comprises a pre-tightening adjustment mechanism capable of increasing the resistance of the guided movement of the limiter.

[0007] With the above solution, when moving the limit piece, it is necessary to overcome the resistance formed by the pre-tightening adjustment mechanism. Therefore, the pre-tightening adjustment mechanism in this solution increases the difficulty of moving the limit piece. When a person touches the un-locked limit piece or tightens the locking piece, the resistance provided by the pre-tightening adjustment mechanism can effectively resist the displacement of the limit piece, reduce the phenomenon of the limit piece shifting caused by touching or operating the locking piece, increase the adjustment accuracy of the limit piece, and effectively simplify the adjustment process.

[0008] Preferably, the pre-tightening adjustment mechanism includes an elastic pre-tightening assembly that can elastically abut against the limit piece and drive the guiding piece to abut against the outer wall of the machine body to increase the frictional resistance.

[0009] Preferably, the locking piece is a bolt that slidably passes through the guiding piece and is screwed with the machine body. The elastic pre-tightening assembly includes a pressing piece sleeved on the locking piece, and an elastic member disposed between the pressing piece and the large head end of the locking piece to drive the pressing piece to elastically abut against the guiding piece.

[0010] With the above solution, one end of the elastic member abuts against the large head end of the locking piece, and the other end elastically abuts against the pressing piece, driving the pressing piece to approach the machine body and cooperate with it to clamp the limit piece, forming a pre-tightening force. The pre-tightening force increases as the locking piece is tightened or decreases as it is loosened. During adjustment, due to the existence of the pre-tightening force, people can move the limit piece by knocking it, and gradually increase the pre-tightening force according to the gap between the limit piece and the correct position. Repeat knocking until the limit piece moves to the correct position, and then fully tighten the locking piece to fix it. The advantage of this adjustment method is that the closer the limit piece is to the correct position, the greater the force required to move the limit piece, and at this time, the influence of tightening the locking piece on the limit piece is very small, almost negligible, so that the effect of precise adjustment can be achieved.

[0011] Preferably, a counterbore for the large head end of the locking piece to sink into is recessed on one side of the pressing piece facing the large head end of the locking piece.

[0012] With the above solution, the end of the locking piece can sink into the counterbore, which can play a role in hiding the elastic member and making the punching device more beautiful.

[0013] Preferably, the pre-tightening adjustment mechanism includes a threaded adjustment assembly provided on the limit piece.

[0014] Preferably, the threaded adjustment assembly includes a screw rod fixedly provided on the limit piece and an internal thread sleeve screwed with the screw rod. The screw rod passes through the machine body, and the internal thread sleeve is rotatably provided on the machine body. An axial limiting component for restricting the axial movement of the internal thread sleeve is provided inside the machine body.

[0015] With the above solution, the screw rod is matched with the internal thread sleeve, and the internal thread sleeve is rotatably arranged on the frame. When adjusting the limiting member, it is only necessary to rotate the internal thread sleeve. The precision of the screw drive is very high and it has self-locking property, which can achieve the effect of stopping as it moves. After adjusting to the correct position, just tighten the locking member directly, further simplifying the adjustment process of the limiting member.

[0016] Preferably, a through hole for the screw rod to pass through is provided on one side of the body, and a receiving groove for rotatably arranging the internal thread sleeve is provided on the other side concentric with the through hole. The axial limiting member includes a spring pin protruding radially along the outer wall of the internal thread sleeve, and an annular groove for the spring pin to elastically snap into is provided on the inner wall of the receiving groove.

[0017] With the above solution, the spring pin can limit the internal thread sleeve in the receiving groove and can also be taken out from the receiving groove, which is convenient for people to add lubricating oil to the threaded mating part.

[0018] Preferably, an operating block extending outside the body is provided at one end of the internal thread sleeve away from the limiting member.

[0019] Since the present utility model adopts the above technical solutions, it has remarkable technical effects: when moving the limiting member, it is necessary to overcome the resistance formed by the pre-tightening adjustment mechanism. Therefore, the pre-tightening adjustment mechanism in this solution increases the difficulty of moving the limiting member. When the human hand touches the un-locked limiting member or when tightening the locking member, the resistance provided by the pre-tightening adjustment mechanism can effectively resist the displacement of the limiting member, and can reduce the phenomenon of the limiting member shifting due to touching or operating the locking member, increasing the adjustment accuracy of the limiting member and effectively simplifying the adjustment process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic external structure diagram of a metal part punching device in Embodiment 1;

[0021] Figure 2 is a schematic exploded structure diagram of a metal part punching device in Embodiment 1;

[0022] Figure 3 is Figure 2 a partial enlarged view of A in

[0023] Figure 4 is a schematic exploded structure diagram of a metal part punching device in Embodiment 2;

[0024] Figure 5 is a left view of a metal part punching device in Embodiment 2;

[0025] Figure 6 is Figure 5 a sectional view taken along a-a in

[0026] Figure 7 isFigure 6 Partial enlarged view of B in

[0027] Figure 8 is Figure 6 Partial enlarged view of C in

[0028] The names of the parts referred to by each digital label in the above drawings are as follows: 1. Body; 101. Sliding groove; 102. Threaded hole; 3. Limiting member; 4. Guiding member; 401. Sliding hole; 5. Locking member; 6. Pressing member; 601. Countersunk head groove; 7. Elastic member; 8. Screw rod; 9. Internal thread sleeve; 10. Through hole; 11. Accommodating groove; 12. Spring pin; 13. Ring groove; 14. Operating block; 15. Driving mechanism; 16. Punching die; 17. Base. Specific implementation mode

[0029] The present utility model will be further described in detail below in conjunction with the drawings and embodiments.

[0030] Embodiment 1

[0031] A metal part punching device, according to Figure 1 shown, includes a body 1, a working station for punching parts is arranged on the body 1, a driving mechanism 15 is fixedly arranged on the body 1, a punching die 16 facing the working station is telescopically arranged on the driving mechanism 15, a base 17 is rotatably connected to the bottom of the body 1, a limiting member 3 facing the working station is further arranged on the body 1, and a guiding member 4 movably matched with the body 1 for guiding is arranged on the limiting member 3. According to Figure 3 shown, a sliding groove 101 for guiding the sliding of the guiding member 4 is opened on the side wall of the body 1, a sliding hole 401 is opened on the guiding member 4, and a locking member 5 is arranged between the guiding member 4 and the body 1. The above is the prior art.

[0032] The improvement point of this embodiment is that the metal part punching device further includes a pre-tightening adjustment mechanism. In this embodiment, the pre-tightening adjustment mechanism is an elastic pre-tightening assembly capable of elastically abutting against the limiting member 3 and driving the guiding member 4 to abut against the outer wall of the body 1 to increase the frictional resistance. According to Figure 2 、 3 shown, in this embodiment, the locking member 5 is a bolt, the locking member 5 passes through the sliding hole 401 of the guiding member 4, a threaded hole 102 for the locking member 5 to be screwed into is opened on the body 1, the elastic pre-tightening assembly includes a pressing member 6 sleeved on the locking member 5, a countersunk head groove 601 is recessed on one side of the pressing member 6 facing the large head end of the locking member 5, and an elastic member 7 is arranged between the locking member 5 and the pressing member 6. In this embodiment, the elastic member 7 is a spring sleeved on the locking member 5 with one end abutted against the large head end and the other end abutted against the pressing member 6. The elastic member 7 can drive the pressing member 6 to drive the pressing member 6 to approach the body 1 and cooperate with it to clamp the limiting member 3, achieving the effect of elastic pre-tightening.

[0033] According to the above structure, with reference to Figures 1 to 3 it can be known that when adjusting the limiting member 3 in the metal punching device of this embodiment, it is necessary to overcome the resistance generated by the elastic pre-tightening assembly, which increases the difficulty of moving the limiting member 3. During adjustment, due to the existence of the pre-tightening force, people can move the limiting member 3 by knocking it, and gradually increase the pre-tightening force according to the gap between the limiting member 3 and the correct position. Repeat knocking the limiting member 3 until it moves to the correct position, and then fully tighten the locking member 5 to fix it. The advantage of this adjustment method is that the closer the limiting member 3 is to the correct position, the greater the force required to move the limiting member 3, and at this time, the influence of tightening the locking member 5 on the limiting member 3 is smaller and can be almost ignored, so as to achieve the effect of precise adjustment, increase the adjustment accuracy of the limiting member 3, and effectively simplify the adjustment process.

[0034] Embodiment 2

[0035] Based on Embodiment 1, this embodiment further defines a metal punching device. In this embodiment, the pre-tightening adjustment mechanism is a threaded adjustment assembly provided on the limiting member 3. According to Figures 4 to 8 as shown, the threaded adjustment assembly includes a screw rod 8 fixedly arranged on the limiting member 3, an internal thread sleeve 9 screwed with the screw rod 8, a through hole 10 is opened on one side of the machine body 1 for the screw rod 8 to pass through, the screw rod 8 is arranged in the through hole 10, a receiving groove 11 concentric with the through hole 10 is opened on the other side of the machine body 1 for the internal thread sleeve 9 to be rotatably arranged, the internal thread sleeve 9 is rotatably arranged on the machine body 1, and an axial limiting member for restricting the axial movement of the internal thread sleeve 9 is arranged in the machine body 1. According to Figure 8 as shown, the axial limiting member includes a spring pin 12 protruding radially along the outer wall of the internal thread sleeve 9, and an annular groove 13 for the spring pin 12 to elastically engage is opened on the inner wall of the receiving groove 11. An operating block 14 extending outside the machine body 1 is arranged at one end of the internal thread sleeve 9 away from the limiting member 3.

[0036] Combined with the above structure, with reference to Figures 4 to 8 it can be known that a metal punching device in this embodiment adopts a threaded transmission method to adjust the position of the limiting member 3. When adjusting the limiting member 3, only need to rotate the internal thread sleeve 9. The precision of threaded transmission is very high and has self-locking property, which can achieve the effect of stopping as it moves. After adjusting to the correct position, directly tighten the locking member 5, which further simplifies the adjustment process of the limiting member 3.

[0037] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A metal part punching device, comprising a body (1), a station for punching parts on the body (1), a stopper (3) facing the station, and a guide (4) arranged on the stopper (3) and cooperating with the body (1) for guiding movement, a locking member (5) capable of limiting or releasing the movement of the guide (4) along the guide, between the guide (4) and the body (1), characterized in that: The metal piece punching device also includes a pre-tightening adjustment mechanism capable of increasing the resistance to the guiding movement of the limiting piece (3).

2. A metal part punching device according to claim 1, characterized in that: The preload adjustment mechanism comprises an elastic preload component capable of elastically pressing against a limiter (3) and driving a guide member (4) to press against an outer wall of a machine body (1) to increase friction resistance.

3. A metal part punching device according to claim 2, characterized in that: The locking member (5) is a bolt which is slidably inserted into the guide member (4) and threadedly engaged with the machine body (1). The elastic preload assembly comprises a pressing member (6) sleeved on the locking member (5), and an elastic member (7) arranged between the pressing member (6) and the large end of the locking member (5) for driving the pressing member (6) to elastically contact the guide member (4).

4. A metal part punching device according to claim 3, characterized in that: A side of the pressing piece (6) facing the large end of the locking piece (5) is recessed and provided with a countersunk groove (601) for the large end of the locking piece (5) to sink into.

5. A metal part punching device according to claim 1, characterized in that: The preload adjustment mechanism comprises a threaded adjustment component arranged on the limiting member (3).

6. A metal part punching device according to claim 5, characterized in that: The thread adjustment assembly comprises a screw rod (8) fixedly arranged on a limiting member (3) and an internal thread sleeve (9) threadedly engaged with the screw rod (8); the screw rod (8) is passed through a machine body (1); the internal thread sleeve (9) is rotatably arranged on the machine body (1); and an axial limiting component for limiting the axial movement of the internal thread sleeve (9) is arranged in the machine body (1).

7. A metal part punching device according to claim 6, characterized in that: A through hole (10) is provided on one side of the machine body (1) for the screw rod (8) to pass through, and a receiving groove (11) is provided on the other side coaxially with the through hole (10) for the internal thread sleeve (9) to be rotatably arranged. The axial limiting component comprises a spring pin (12) radially protruding on the outer wall of the internal thread sleeve (9), and an annular groove (13) is provided on the inner wall of the receiving groove (11) for the spring pin (12) to be elastically inserted.

8. A metal part punching device according to claim 6, characterized in that: An operating block (14) extending out of the machine body (1) is provided at one end of the internal thread sleeve (9) away from the limiting member (3).

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