Pin-removing pliers without breaking needle

Abstract

The utility model belongs to the technical field of equipment maintenance auxiliary tools, and discloses a pair of pin-removing pliers without needle breakage, which comprises a first sliding block, a hook-shaped block is fixedly connected onto the first sliding block, a needle sleeve component is sleeved in the middle of the first sliding block, a second sliding block is mounted at the other end of the needle sleeve component, and the hook-shaped block is fixedly connected onto the second sliding block. Handles are hinged to the first sliding block and the second sliding block, a spring is arranged at the bottom of the first sliding block, and the other end of the spring is fixedly connected with the handles. According to the utility model, the punching needle manufactured by using a stretching process is inserted into the loop bar, so that micro-cracks or internal defects which are invisible to naked eyes and are generated in the machining process of the existing turning process are reduced, the stress distribution in the material is more uniform and the generation of the internal defects is reduced through gradually stretching the material by using the stretching technology, and when the front end of the punching needle is stressed, the punching needle is prevented from being damaged. The durability of the punching needle can be greatly improved, the stretching technology is generally more efficient than the turning technology, the machining time can be shortened, material waste can be reduced, and therefore the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to equipment maintenance auxiliary tool technical field, specifically is a kind of needle's taking out pincers. BACKGROUND

[0002] In the maintenance and replacement process of folding key, especially when the front-end key blank needs to be replaced, a key step is to take out and re-press the fixing pin. Efficient and accurate completion of this step is crucial to ensure the normal use and safety of the key.

[0003] At present, the pin taking needle equipped by the common pin taking pincers on the market is mostly made by turning or grinding process. The basic process of turning process is to fix a steel bar with a diameter of about 5mm on a lathe, and then to accurately cut the front end of the steel bar to about 1.4mm in thickness by rotary cutting, so as to adapt to the demand of pressing pin. However, due to the friction and cutting force between the tool and the steel bar during turning, micro cracks may be generated inside the steel bar, which are difficult to be detected by naked eye. Although these micro cracks may not affect the use of pin taking needle initially, they may gradually expand in the process of long-term stress and wear, eventually leading to the breakage or failure of pin taking needle. Grinding process grinds the steel bar by grinding wheel or abrasive to achieve the required size accuracy. However, grinding process has the problems of too long processing time and high cost. Due to the wear of grinding wheel or abrasive during grinding process, it needs to be replaced or repaired frequently, which not only increases the processing time, but also increases the production cost. The present application provides a pin taking pincers to solve the above problems. SUMMARY

[0004] To solve the problems raised in the background art, the utility model provides a pin taking pincers.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a pin taking pincers, comprising a first sliding block, a hook-shaped block is fixedly connected to the first sliding block, a needle sleeve assembly is sleeved on the middle part of the first sliding block, a second sliding block is installed at the other end of the needle sleeve assembly, a handle is hingedly connected to the first sliding block and the second sliding block, a spring is arranged at the bottom of the first sliding block, and the other end of the spring is fixedly connected with the handle.

[0006] The needle sleeve assembly comprises a sleeve rod, a punch needle, a first fixing screw and a second fixing screw, the outer side of the sleeve rod is sleeved with the first sliding block, the punch needle is fixedly connected in the sleeve rod by the first fixing screw, and the end of the sleeve rod away from the first sliding block is fixedly connected in the second sliding block by the second fixing screw.

[0007] Preferably, the bottom of the first sliding block and the second sliding block is provided with a sliding groove for sliding of the handle.

[0008] Preferably, the intersection of the two handles is hinged, and the hook-shaped block is an L-shaped structure.

[0009] Preferably, the diameter of the sleeve rod is 5 mm, and the diameter of the punch pin is 1.3-1.4 mm.

[0010] Preferably, a needle extraction groove is formed in the middle of the sleeve rod, and the needle extraction groove is located at the end of the punch pin.

[0011] Preferably, a fixing groove is formed in the end of the sleeve rod close to the second sliding block, the second fixing screw is threadedly connected with the second sliding block, and the first fixing screw is threadedly connected with the sleeve rod.

[0012] Compared with the prior art, the utility model has the beneficial effects as follows:

[0013] The punch pin made by using the stretching process is inserted in the sleeve rod, so that the invisible micro-cracks or internal defects generated in the machining process of the existing turning process are reduced, the stress distribution in the material is more uniform through gradually stretching the material by the stretching technology, the generation of internal defects is reduced, the durability of the punch pin is greatly improved when the front end of the punch pin is stressed, the stretching technology is usually more efficient than the turning process, the machining time and material waste can be reduced, and thus the production cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a front view schematic diagram of the utility model structure;

[0015] Figure 2 It is a front view schematic diagram of the utility model structure;

[0016] Figure 3 It is an enlarged schematic diagram of A of the utility model structure; Figure 2

[0017] Figure 4 It is a disassembled schematic diagram of the needle sleeve assembly of the utility model structure.

[0018] In the figure: 1, first sliding block; 2, hook-shaped block; 3, second sliding block; 4, needle sleeve assembly; 401, sleeve rod; 402, punch pin; 403, first fixing screw; 404, second fixing screw; 5, handle; 6, spring. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.​

[0020] As Figures 1 to 4 shown, the utility model provides a kind of needle taking out pin pliers, including first slider 1, hook block 2 is fixedly connected on first slider 1, needle sleeve assembly 4 is set in the middle part of first slider 1, second slider 3 is installed in the other end of needle sleeve assembly 4, handle 5 is hingedly connected on first slider 1 and second slider 3, the bottom of first slider 1 is provided with spring 6, the other end of spring 6 is fixedly connected with handle 5;

[0021] Wherein, needle sleeve assembly 4 includes sleeve rod 401, punch needle 402, first fixed screw 403 and second fixed screw 404, the outside of sleeve rod 401 is set with first slider 1, punch needle 402 is fixedly connected in the inside of sleeve rod 401 by first fixed screw 403, the end of sleeve rod 401 away from first slider 1 is fixedly connected in the inside of second slider 3 by second fixed screw 404.

[0022] Punch needle 402 made by using stretching process is inserted in the inside of sleeve rod 401, reduces the microcrack or internal defect that cannot be seen by naked eye in machining process in existing turning process, stretching technology makes the stress distribution in material more uniform by gradually stretching material, reduces the generation of internal defect, when front end of punch needle 402 is stressed, the durability of punch needle 402 can be greatly improved, stretching technology is usually more efficient than turning process, can reduce processing time and material waste, to reduce production cost, it is worth mentioning that the stretching process mentioned in the case is prior art, and has wide application, and will not be repeated.

[0023] As Figure 1 shown, the bottom of first slider 1 and second slider 3 is provided with the sliding slot for the sliding of handle 5, the intersection of two handles 5 is hingedly connected, and hook block 2 is L-shaped structure.

[0024] Two handles 5 are pressed, so that first slider 1 and second slider 3 move to the middle, so that punch needle 402 passes through hook block 2 and is punched out, and 1.6 millimeter thick pin is extruded.

[0025] As Figures 1 to 4 shown, the diameter of sleeve rod 401 is 5 millimeters, the diameter of punch needle 402 is 1.3-1.4 millimeters, needle taking out slot is formed in the middle part of sleeve rod 401, needle taking out slot is located at the end of punch needle 402, fixed position slot is formed in the end of sleeve rod 401 close to second slider 3, second fixed screw 404 is threadedly connected with second slider 3, and first fixed screw 403 is threadedly connected with sleeve rod 401.

[0026] The working principle and use process of the utility model are as follows:

[0027] By pressing the two handles 5, the first slider 1 and the second slider 3 are moved to the middle, the punch pin 402 passes through the hook-shaped block 2 to punch out, and the 1.6mm thick pin is extruded out.

[0028] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one from another entity or action without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0029] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A needle extractor comprising a first slider (1), characterized in that: The first slider (1) is fixed with a hook-shaped block (2), the middle part of the first slider (1) is sleeved with a needle sleeve assembly (4), the other end of the needle sleeve assembly (4) is installed with a second slider (3), the first slider (1) and the second slider (3) are both hinged with a handle (5), the bottom of the first slider (1) is provided with a spring (6), the other end of the spring (6) is fixed with the handle (5). Wherein, the needle sleeve assembly (4) comprises a sleeve rod (401), a punch needle (402), a first fixed screw (403) and a second fixed screw (404), the outer side of the sleeve rod (401) is sleeved with the first slider (1), the punch needle (402) is fixed in the sleeve rod (401) by the first fixed screw (403), the end of the sleeve rod (401) away from the first slider (1) is fixed in the second slider (3) by the second fixed screw (404).

2. The needle extractor according to claim 1, wherein: The bottom of the first slider (1) and the second slider (3) is provided with a sliding groove for the handle (5) to slide.

3. The needle extractor of claim 1, wherein: The intersection of the two handles (5) is hinged, and the hook-shaped block (2) is L-shaped structure.

4. The needle extractor of claim 1, wherein: The diameter of the sleeve rod (401) is 5mm, and the diameter of the punch needle (402) is 1.3-1.4mm.

5. The needle-removal forceps of claim 1, wherein: The middle part of the sleeve rod (401) is provided with a needle taking groove, and the needle taking groove is located at the end of the punch needle (402).

6. The needle-removal forceps of claim 1, wherein: The end of the sleeve rod (401) close to the second slider (3) is provided with a fixed position groove, the second fixed screw (404) is threadedly connected with the second slider (3), and the first fixed screw (403) is threadedly connected with the sleeve rod (401).

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