Punched nail pulling-out device

Abstract

The utility model discloses a punching nail pulling-out device which comprises a pull rod, the upper end of the pull rod is provided with a locking inserting groove used for inserting a punching nail, and the pull rod is sleeved with an impact hammer in a sliding mode. The locking assembly is arranged at the upper end of the pull rod and used for locking the punching nail; the limiting assembly is arranged at the lower end of the pull rod and used for preventing the impact hammer from slipping off from the pull rod. The punching nail pulling-out device is reasonable in structure and easy to operate, a punching nail can be directly pulled out from a component, and the use requirement can be better met.

Description

Technical Field

[0001] This utility model relates to the field of mechanical engineering technology, specifically to a punch pull-out device. Background Technology

[0002] Currently, drift pins are widely used as temporary components in steel structure installation. After use, they need to be removed. However, drift pins inside components may not be able to be driven out normally due to the stress after installation, requiring measures to remove them. A common method is for workers to use a sledgehammer to strike the component, driving the drift pin out in the opposite direction. However, during this process, some drift pins are difficult to remove due to excessive frictional resistance, and striking the component can easily deform it, further increasing the difficulty and workload of removing the drift pins.

[0003] To address the aforementioned issues, a utility model patent with authorization announcement number CN210307653U discloses a punch removal device that can smoothly remove the punch from the component when the frictional resistance between the punch and the component is too high.

[0004] However, in actual use, the device needs to be fixed to the component by a screw before the pin is removed. When removing the pin, the pin cannot be completely removed from the component. The pin can only be moved to a position where its lower end face is flush with the lower end face of the component. Then, a person needs to continue to manually pull it out, which is quite cumbersome. Utility Model Content

[0005] The purpose of this invention is to provide a punch pull-out device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A punch removal device includes: a pull rod, the upper end of which is provided with a locking slot for inserting a punch, and an impact hammer slidably mounted on the pull rod; a locking assembly disposed at the upper end of the pull rod for locking the punch; and a limiting assembly disposed at the lower end of the pull rod for preventing the impact hammer from slipping off the pull rod.

[0008] As a preferred embodiment, the locking assembly includes multiple sets of locking tabs extending from the upper end of the pull rod, and the upper half of the pull rod is also provided with a locking external thread. A locking nut is threaded onto the upper half of the pull rod at the position corresponding to the locking external thread, and a locking sleeve is fixed to the upper end of the locking nut.

[0009] As a preferred embodiment, the outer diameter of the locking tab gradually decreases from top to bottom.

[0010] As a preferred embodiment, the locking groove inside the locking sleeve is an inverted frustum shape.

[0011] As a preferred embodiment, the limiting component includes a limiting screw fixed to the lower end of the pull rod, a limiting nut threaded onto the limiting screw, and a limiting tray fixed to the upper end of the limiting nut.

[0012] As a preferred embodiment, the impact hammer is circular.

[0013] Compared with existing technologies, the advantages of this invention are as follows: By inserting the punch at the lower end of the component into the locking groove, and then locking the punch and the pull rod together using the locking assembly, the impact hammer is pulled upwards, causing it to fall from a high point and impact the limiting assembly. This causes the pull rod to move downwards, allowing the punch to be directly pulled out of the component. The operation is simple and convenient, eliminating the need to fix the device to the component with bolts for the punch removal operation, thus better meeting usage requirements. This invention has a reasonable structure, is simple to operate, and can directly pull the punch out of the component, better meeting usage requirements. Attached Figure Description

[0014] Figure 1 A three-dimensional structural diagram of a mounting component for a punch pull-out device;

[0015] Figure 2 A schematic diagram of the overall three-dimensional structure of a punch pull-out device;

[0016] Figure 3 This is a schematic diagram of the exploded structure of a punch pull-out device.

[0017] Figure 4 A punch pull-out device Figure 3 A top-view structural diagram;

[0018] Figure 5 A punch pull-out device Figure 4 Schematic diagram of the cross-sectional structure at point AA.

[0019] In the diagram: 1. Component; 11. Punch; 2. Tie rod; 3. Limit nut; 31. Limit tray; 32. Limit screw; 4. Impact hammer; 5. Locking sleeve; 51. Locking groove; 52. Locking nut; 53. Locking external thread; 54. Locking clip; 55. Locking slot. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0021] Example: Please refer to Figures 1-5 A punch removal device includes: a pull rod 2, the upper end of which is provided with a locking slot 55 for inserting a punch 11, and an impact hammer 4, which is annular, slidably mounted on the pull rod 2; a locking assembly, which is provided at the upper end of the pull rod 2, for locking the punch 11; and a limiting assembly, which is provided at the lower end of the pull rod 2, for preventing the impact hammer 4 from slipping off the pull rod.

[0022] The working principle of this utility model is as follows: When removing the nail, the punch 11 at the lower end of component 1 is inserted into the locking slot 55. Then, the punch 11 is locked to the pull rod 2 by the locking assembly. Then, the impact hammer 4 is pulled up so that it falls from the high point and hits the limiting assembly, which can drive the pull rod 2 down. The punch 11 can be directly pulled out from component 1. The operation is simple and convenient. The nail removal operation can be carried out without fixing the device to component 1 with bolts, which can better meet the needs of use.

[0023] As a further embodiment, the locking assembly includes multiple sets of locking tabs 54 extending from the upper end of the pull rod 2. The upper half of the pull rod 2 is also provided with a locking external thread 53. A locking nut 52 is threaded onto the upper half of the pull rod 2 at the position corresponding to the locking external thread 53. A locking sleeve 5 is fixed to the upper end of the locking nut 52. The outer diameter of the locking tabs 54 gradually decreases from top to bottom. The locking groove 51 inside the locking sleeve 5 is an inverted frustum shape.

[0024] The working principle of the locking assembly is as follows: When locking, the punch 11 is inserted into the locking slot 55, so that the locking clip 54 surrounds the punch 11. Then, the locking nut 52 is rotated to push the locking sleeve 5 upward, thereby squeezing the locking clip 54 and deforming it inward, thereby locking the punch 11 and making it easy to pull out the punch.

[0025] As a further embodiment, the limiting assembly includes a limiting screw 32 fixed at the lower end of the pull rod 2, a limiting nut 3 threaded onto the limiting screw 32, and a limiting tray 31 fixed at the upper end of the limiting nut 3.

[0026] The working principle of the limiting component is as follows: after the impact hammer 4 is mounted on the pull rod 2, the limiting nut 3 is rotated to fix the limiting tray 31 to the lower end of the pull rod 2, which can prevent the impact hammer 4 from falling off the pull rod 2.

[0027] In this utility model, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of the structural relationship between the various components or elements of this utility model and do not specifically refer to any component or element in this utility model. They should not be construed as limiting this utility model.

Claims

1. A punch pull-out device, characterized in that, include: A pull rod (2) is provided at its upper end with a locking slot (55) for inserting a punch (11), and an impact hammer (4) is slidably mounted on the pull rod (2). A locking assembly is provided at the upper end of the pull rod (2) for locking the punch (11); A limiting component is provided at the lower end of the pull rod (2) to prevent the impact hammer (4) from slipping off the pull rod.

2. The punch pull-out device according to claim 1, characterized in that: The locking assembly includes multiple locking clips (54) extending from the upper end of the pull rod (2). The upper half of the pull rod (2) is also provided with a locking external thread (53). A locking nut (52) is screwed onto the upper half of the pull rod (2) at the position corresponding to the locking external thread (53). A locking sleeve (5) is fixed to the upper end of the locking nut (52).

3. The punch pull-out device according to claim 2, characterized in that: The outer diameter of the locking tab (54) gradually decreases from top to bottom.

4. The punch pull-out device according to claim 3, characterized in that: The locking groove (51) inside the locking sleeve (5) is an inverted frustum shape.

5. A punch pull-out device according to claim 4, characterized in that: The limiting assembly includes a limiting screw (32) fixed at the lower end of the pull rod (2), a limiting nut (3) threaded onto the limiting screw (32), and a limiting tray (31) fixed at the upper end of the limiting nut (3).

6. A punch pull-out device according to claim 5, characterized in that: The impact hammer (4) is circular.

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