An internal impact pin puller

Abstract

The utility model discloses an inner impact type pin puller, be applied to equipment frock maintenance, dismounting and overhauling and state switching process various pin pull out operation. The traditional pin puller is big in size, and the impact hammer is external, and the metal striking surface for providing the impact force is also exposed, the pin puller has certain security risk in the use process, and the personal safety risk such as hand clamp. The patent designs and makes an inner impact type pin puller, the inner impact type pin puller has light weight, small size, high security, and the like characteristics, such as convenient production, and the required connecting device, can adapt to the part like pin and the like that need to be pulled out in the maintenance process and can be disassembled by impact force, solve the safety risk such as hand clamp when using the traditional pin puller in the maintenance part disassembly, have higher practical popularization value.

Description

Technical Field

[0001] This utility model belongs to the field of mold manufacturing, and specifically relates to an internal impact pin puller. Background Technology

[0002] As competition in the automotive industry intensifies and car designs become increasingly complex, the precision required for automotive mold manufacturing must also rise. Most inserts, components, and mounting bases on these molds are positioned using pins. Furthermore, the inserts and punches of the mold need frequent disassembly and reassembly depending on the product's state, necessitating the use of pin pullers during disassembly. Therefore, pin pullers are used very frequently during mold maintenance and state changes.

[0003] Traditional pin pullers are large in size, with an external impact hammer and the metal striking surface used to provide impact force exposed. This type of pin puller poses certain safety hazards during use, such as the risk of hand pinching. Utility Model Content

[0004] The purpose of this utility model is to provide a patented internal impact pin puller for removing various pins during equipment tooling maintenance, disassembly, repair, and state switching. Traditional pin pullers are bulky, with externally mounted impact hammers and exposed metal striking surfaces, posing safety hazards such as hand pinching. This patented internal impact pin puller is lightweight, compact, highly safe, and easy to manufacture. With the necessary connecting devices, it can handle parts like pins that require pulling impact force for disassembly during maintenance, solving the safety risks of hand pinching associated with traditional pin pullers and possessing high practical value for widespread application.

[0005] To address the aforementioned problems in the existing technology, the technical solution adopted by this utility model is as follows:

[0006] An internal impact type pin puller includes: a pull rod and a sliding sleeve, one end of the pull rod is located inside the sliding sleeve, the other end of the pull rod is located outside the sliding sleeve, and the pull rod is provided with an impact section, which is located inside the sliding sleeve.

[0007] By setting up a sliding sleeve and a pull rod, the impact section of the pull rod is located inside the sliding sleeve. By pulling the sliding sleeve, the sliding sleeve strikes the impact section, thereby pulling out the pin.

[0008] The internal impact pin puller mainly consists of four parts: an upper end cover, a lower end cover, a sleeve, and a pulling rod. All four parts can be machined on a lathe. It is simple to manufacture, has a reliable structure, and is easy to assemble. It can be used to pull pins from various molds, offering a wide range of applications.

[0009] Furthermore, the sliding sleeve includes a sleeve, an upper end cap, and a lower end cap. The upper and lower end caps are threaded to both ends of the sleeve, respectively. The upper end cap has a limiting groove on the side near the sleeve, and the lower end cap has a through hole. The sleeve is knurled for anti-slip treatment. By providing the upper and lower end caps, the entire sliding sleeve is easier to machine, and the replacement of the pull rod is also convenient. First, the upper end cap is installed on one side of the sleeve, then the pull rod is installed into the sleeve, and finally the lower end cap is passed through the pull rod and installed on the other side of the sleeve to complete the installation.

[0010] Furthermore, the pull rod includes a limiting section, an impact section, and a connecting section. The limiting section is adapted to the limiting groove, the diameter of the impact section is larger than the inner diameter of the through hole, and the end of the connecting section is provided with external or internal threads. By setting a limiting section adapted to the limiting groove, when the limiting section is engaged with the limiting groove, rotating the sliding sleeve can drive the pull rod to rotate together. The connecting section is provided with threads, which can be used to thread the connecting section to the pin, thereby facilitating the removal of the pin.

[0011] Furthermore, the limiting groove has an internal hexagonal structure, and the limiting segment has an external hexagonal structure, with the external hexagonal structure adapting to the internal hexagonal structure. The limiting groove is mainly used to engage with the limiting segment, and can drive the pull rod to rotate by rotating the sliding sleeve, facilitating the threaded connection between the pull rod and the pin. The limiting groove and the limiting segment can also be other structures, as long as they cannot rotate relative to each other after engagement.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. This utility model is small in size, compact in structure, easy to carry, easy to manufacture, and can be adapted to different threaded ends according to the size of the pin, making it highly adaptable.

[0014] 2. This utility model features a knurled anti-slip treatment on the handheld sleeve, making it more suitable for gripping and operation. In its corresponding usage environment, it can completely avoid the risk of pinching hands with traditional pin pullers.

[0015] 3. The pull rod of this utility model can be machined with internal or external threads according to the usage requirements. It can be disassembled by connecting pins, or it can be connected to other devices to provide disassembly impact force. Attached Figure Description

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

[0017] Figure 2 This is a cross-sectional view of the present invention.

[0018] In the diagram: 1-Upper end cover; 11-Limiting groove; 2-Pull rod; 21-Limiting section; 22-Impact section; 23-Connecting section; 3-Sleeve; 4-Lower end cover. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and reference numerals.

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] The terms “first,” “second,” “third,” etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0022] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0024] Example 1:

[0025] like Figure 1 and 2 As shown, an internal impact type pin puller includes: a pull rod 2 and a sliding sleeve. One end of the pull rod 2 is located inside the sliding sleeve, and the other end of the pull rod 2 is located outside the sliding sleeve. The pull rod 2 is provided with an impact section 22, which is located inside the sliding sleeve.

[0026] By setting up a sliding sleeve and a pull rod 2, the impact section 22 of the pull rod 2 is located inside the sliding sleeve. By pulling the sliding sleeve, the sliding sleeve strikes the impact section 22, thereby pulling out the pin.

[0027] Example 2:

[0028] Based on Embodiment 1, the sliding sleeve includes a sleeve 3, an upper end cover 1, and a lower end cover 4. The upper end cover 1 and the lower end cover 4 are respectively threaded to both ends of the sleeve 3. The upper end cover 1 is provided with a limiting groove 11 on the side near the sleeve 3, and the lower end cover 4 is provided with a through hole (not shown in the figure).

[0029] By setting the upper end cover 1 and the lower end cover 4, the entire sliding sleeve is easier to process, and the pull rod 2 is easier to replace.

[0030] Example 3:

[0031] Based on Embodiment 2, the pull rod 2 includes a limiting section 21, an impact section 22, and a connecting section 23. The limiting section 21 is adapted to the limiting groove 11. The diameter of the impact section 22 is larger than the inner diameter of the through hole. The end of the connecting section 23 is provided with external or internal threads.

[0032] By setting a limiting section 21 that is compatible with the limiting groove 11, when the limiting section 21 is engaged with the limiting groove 11, rotating the sliding sleeve can drive the pull rod 2 to rotate together. A thread is set on the connecting section 23, which can be used to connect the connecting section 23 with the pin, thereby making it convenient to pull out the pin.

[0033] Example 4:

[0034] Based on embodiment 3, the limiting groove 11 has an inner hexagonal structure, and the limiting segment 21 has an outer hexagonal structure, which is adapted to the inner hexagonal structure.

[0035] The limiting groove 11 is mainly used to engage with the limiting section 21. It can drive the pull rod 2 to rotate by rotating the sliding sleeve, so that the pull rod 2 can be threadedly connected to the pin.

[0036] The limiting groove 11 and the limiting section 21 can also be other structures, as long as they cannot rotate relative to each other after being engaged.

[0037] In the corresponding working environment, the operator holds the movable sleeve and presses it down, inserting the hexagonal end of the pull rod 2 into the limiting groove 11 (internal hexagonal hole) of the upper cover 1. The pull rod can then be rotated by rotating the movable sleeve 3, thereby screwing it into the threaded hole of the pin. Then, the operator holds the movable sleeve 3 and pulls the pin upward. Because the large end of the pull rod 2 impacts inside the movable sleeve, the risk of pinching the hand is avoided with traditional external pin pullers.

[0038] Specific working principle:

[0039] In use, first place the limiting section 21 into the limiting groove 11, then connect the connecting section 23 to the pin to be pulled out (by rotating the sliding sleeve, the pulling rod 2 is rotated, so that the connecting section 23 is threadedly connected to the pin), then manually pull the sliding sleeve so that the lower end cover 4 hits the impact section 22, thereby pulling out the pin.

[0040] This utility model is not limited to the above-mentioned optional embodiments. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made in its shape or structure, any technical solution that falls within the scope of the claims of this utility model shall be protected by this utility model.

Claims

1. An internal impact type pin puller, characterized in that, include: The lever (2) and the sliding sleeve are provided. One end of the lever (2) is located inside the sliding sleeve, and the other end of the lever (2) is located outside the sliding sleeve. The lever (2) is provided with an impact section (22) located inside the sliding sleeve.

2. The internal impact type pin puller according to claim 1, characterized in that, The sliding sleeve includes a sleeve (3), an upper end cover (1) and a lower end cover (4). The upper end cover (1) and the lower end cover (4) are threaded to both ends of the sleeve (3). The upper end cover (1) is provided with a limiting groove (11) on the side near the sleeve (3), and the lower end cover (4) is provided with a through hole.

3. The internal impact type pin puller according to claim 1, characterized in that, The pull rod (2) includes a limiting section (21), an impact section (22) and a connecting section (23). The limiting section (21) is adapted to the limiting groove (11). The diameter of the impact section (22) is larger than the inner diameter of the through hole. The end of the connecting section (23) is provided with an external thread or an internal thread.

4. The internal impact type pin puller according to claim 3, characterized in that, The limiting groove (11) is an inner hexagonal structure, and the limiting segment (21) is an outer hexagonal structure. The outer hexagonal structure is adapted to the inner hexagonal structure.

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