CN218905193U - Core needle assembly and disassembly tools - Google Patents

Abstract

The application relates to a core needle assembly and disassembly tools for dismouting to the core needle, core needle assembly and disassembly tools includes: the first end of the protective sleeve is provided with a penetrating hole communicated with the accommodating cavity; the clamping part is arranged at the first end of the protective sleeve; the clamping part is used for being matched with a threaded sleeve arranged on the ejector rod penetrating out of the penetrating hole in a clamping mode, so that the threaded sleeve can be driven to synchronously rotate when the protective sleeve rotates around an axis. When the core needle dismounting tool is used for dismounting the core needle, the operation is convenient, and the core needle is not easy to damage.

Description

Core needle assembly and disassembly tools

Technical Field

The utility model relates to the technical field of solar cells, in particular to a core pin dismounting tool.

Background

With the development of technology in the semiconductor field, ceramic core pins (Pin) are used to lift a wafer during a plating process in etching or deposition processes. For example, in the process of manufacturing a silicon-based solar cell, when a film is deposited, a carrier plate carrying a silicon wafer in a gas box needs to be lifted or put down by lifting a top rod in a ceramic core Pin (Pin) which is connected to the bottom of the gas box through threads, so that the carrier plate and the silicon wafer are transported.

Typically, after a period of use, the ceramic core Pin (Pin) needs to be replaced. In the related art, a threaded sleeve of a core needle is usually clamped by a nipper pliers and rotated relative to an air box to complete disassembly or assembly. However, this approach is relatively inconvenient to operate and is prone to damage to the ceramic core Pin (Pin).

Disclosure of Invention

Based on the above, the utility model provides a core pin dismounting tool, which is convenient to operate when used for dismounting the core pin and is not easy to damage the core pin.

Core needle assembly and disassembly tools for dismouting to the core needle, core needle assembly and disassembly tools includes:

the first end of the protective sleeve is provided with a penetrating hole communicated with the accommodating cavity; and

the clamping part is arranged at the first end of the protective sleeve;

the clamping part is used for being matched with a threaded sleeve arranged on the ejector rod penetrating out of the penetrating hole in a clamping mode, so that the threaded sleeve can be driven to synchronously rotate when the protective sleeve rotates around an axis.

In one embodiment, the core pin removal tool includes at least one set of snap-fit assemblies;

each clamping assembly comprises two clamping parts which are oppositely arranged along the radial direction of the penetrating hole.

In one embodiment, the clamping portion comprises a first clamping portion arranged at the first end of the protective sleeve and a second clamping portion arranged at one end, far away from the protective sleeve, of the first clamping portion;

a step part which is used for being matched with the tooth mouth of the thread sleeve is formed between the first clamping part and the second clamping part.

In one embodiment, the step has a first step surface and a second step surface connected to each other;

the first step surface is arranged on the first clamping part, and the second step surface is arranged on the second clamping part;

the first clamping part is used for clamping into the tooth mouth so that the first step surface can be abutted against the bottom wall of the tooth mouth, and the second clamping part is used for extending into the thread bush so that the second step surface can be attached to the inner wall of the thread bush.

In one embodiment, the first step surface is configured to be planar.

In one embodiment, the second step surface is configured to be a planar or cambered surface.

In one embodiment, the protective sleeve further comprises a second end disposed opposite the first end;

a first opening is formed in one side of the protective sleeve, so that the accommodating cavity is constructed as a semi-closed cavity from the first end to the second end.

In one embodiment, the core pin disassembling tool further comprises an operating member which is arranged in a hollow manner and is arranged at the second end of the protective sleeve;

the inner cavity of the operating piece is communicated with the accommodating cavity;

the radial dimension of the inner cavity is larger than that of the accommodating cavity, and the inner cavity is used for accommodating a connecting disc connected to one end, away from the threaded sleeve, of the ejector rod.

In one embodiment, the inner cavity is communicated with the accommodating cavity through a communication hole;

the radial dimension of the inner cavity is larger than the radial dimension of the communication hole.

In one embodiment, a second opening communicated with the first opening is formed on one side of the operation piece, and the connection disc of the core needle is used for being placed into the inner cavity.

Above-mentioned core needle assembly and disassembly tools, including the lag with set up in the joint portion of lag first end, the lag is equipped with and holds the chamber, can hold the ejector pin of core needle, wear out the hole on the lag and be used for supplying the ejector pin to wear out. The clamping part can be matched with a threaded sleeve connected on the ejector rod penetrating out of the penetrating hole in a clamping manner so as to complete connection with the core needle. And when the clamping part is matched with the threaded sleeve in a clamping way, if the protective sleeve rotates around an axis, the protective sleeve can drive the threaded sleeve clamped with the protective sleeve to synchronously rotate, so that the protective sleeve can be detached or installed. In the mounting process, the protective sleeve is rotated after the clamping part is clamped with the threaded sleeve, so that the assembly and disassembly can be completed, the operation is convenient, the threaded sleeve is not required to be clamped by using the nipper pliers, and the threaded sleeve is not easy to damage; and the accommodating cavity can accommodate the ejector rod, so that the ejector rod is protected, and is not easy to collide and break.

Drawings

FIG. 1 is a schematic view of a core pin assembly and disassembly tool and a core pin in use according to an embodiment of the present application;

FIG. 2 is a schematic view of the core pin removal tool of FIG. 1;

FIG. 3 is a schematic view of a locking portion of the core pin removal tool of FIG. 2;

FIG. 4 is a schematic structural view of a core pin;

fig. 5 is a schematic view of another angle of the core pin shown in fig. 4.

Reference numerals:

core pin 100, thread bush 110, tooth mouth 111, ejector rod 120, limiting block 121, connecting disc 130 and gasket 140;

the core pin attaching/detaching tool 200, the protective sheath 210, the accommodation chamber 211, the through hole 212, the engagement portion 220, the first engagement portion 221, the first step surface 2211, the second engagement portion 222, the second step surface 2221, the operation element 230, the inner chamber 231, the top plate 232, the communication hole 2321, and the side plate 233.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

To better illustrate the technical solution and effect of the present application, the structure of the core pin 100 is described with reference to fig. 4 and 5 before the detailed deployment. Fig. 4 is a schematic structural view of the core pin, and fig. 5 is a schematic structural view of the core pin at another angle shown in fig. 4.

It should be noted that, for convenience of description, the connection pad 130 is defined below the thread bush 110 with reference to the axial direction of the jack 120, and correspondingly, the thread bush 110 is located above the connection pad 130.

As shown in fig. 4 and 5, the core pin 100 includes a screw sleeve 110, a push rod 120, a connection pad 130, and a gasket 140. The outer circumferential surface of the screw sleeve 110 is provided with an external thread for being in threaded connection with the bottom of the air box, and the bottom end of the screw sleeve 110 is provided with an upwardly concave tooth mouth 111. The inside of the thread bush 110 is hollow, and a gasket 140 is fixed at the top end, and the ejector rod 120 passes through the thread bush 110 and the gasket 140. The top end of the ejector rod 120 is provided with a limiting block 121, and the radial size of the limiting block 121 is larger than the aperture of a through hole in the gasket 140 for the ejector rod 120 to pass through, so as to inhibit the ejector rod 120 from falling out of the threaded sleeve 110 downwards. The bottom end of the ejector rod 120 is fixedly connected with the connecting disc 130, the connecting disc 130 is connected with a driving piece, and the driving piece can drive the connecting disc 130 to move up and down so as to drive the ejector rod 120 to synchronously move up and down to jack up or put down the carrier plate.

In the related art, when the core pin 100 is assembled and disassembled, the connecting disc 130 is usually removed from the driving member, and the threaded sleeve 110 is clamped by using the nipper pliers and is driven to rotate relative to the air box. However, this manner of disassembly using the nipper pliers is relatively inconvenient to operate and is prone to damage to the threaded bushing or the ejector pin.

In view of this, the present application provides a core pin attaching and detaching tool that can attach or detach the core pin 100 described above to or from the air box.

FIG. 1 is a schematic view of a core pin assembly and disassembly tool and a core pin in use according to an embodiment of the present application; fig. 2 is a schematic structural view of the core pin removing tool in fig. 1.

Referring to fig. 1, 2 and 4, a core pin disassembling tool 200 according to an embodiment of the utility model includes a protecting sleeve 210 and a clamping portion 220. The shield 210 has a receiving cavity 211 for receiving the push rod 120 of the core pin 100, and a first end of the shield 210 is provided with a penetration hole 212 communicating with the receiving cavity 211. The clamping portion 220 is disposed at a first end of the protection sleeve 210. The locking portion 220 is configured to be locked and engaged with the threaded sleeve 110 disposed on the ejector 120 passing through the through hole 212, so as to drive the threaded sleeve 110 to rotate synchronously when the protective sleeve 210 rotates around an axis.

The core pin assembling and disassembling tool 200 can be assembled with the threaded sleeve 110 connected to the ejector pin 120 penetrating out of the penetrating hole 212 by the locking portion 220, so as to complete the connection with the core pin 100. And when the clamping part 220 is matched with the threaded sleeve 110 in a clamping way, if the protective sleeve 210 rotates around an axis, the threaded sleeve 110 clamped with the protective sleeve will be driven to synchronously rotate, so that the detachment or the installation is realized. In the above process, the assembly and disassembly can be completed only by rotating the protective sleeve 210 after the clamping part 220 is clamped with the threaded sleeve 110, so that the operation is convenient, the threaded sleeve 110 is not clamped by using the nipper pliers, and the threaded sleeve 110 is not easy to damage; and the accommodating cavity 211 can accommodate the ejector rod 120, so that the ejector rod 120 is protected, and is not easy to be broken by collision.

Specifically, in view of the drawing, the up-down direction is the length direction of the protective sleeve 210, and the first end is the top end of the protective sleeve 210. The receiving chamber 211 penetrates the shield 210 in the up-down direction, and the penetration hole 212 is located at the top end of the shield 210. The locking portion 220 protrudes upwards from the top end of the protecting sleeve 210, and the locking portion 220 is used for locking and matching with the self-carried tooth 111 on the threaded sleeve 110. Of course, the locking portion 220 may be locked with a locking structure provided on the threaded sleeve 110.

Fig. 3 is a schematic structural view of a clamping portion of the core pin assembling and disassembling tool in fig. 2.

Referring to fig. 4 and 5, two symmetrical teeth 111 are generally provided on the threaded sleeve 110 of the core pin 100. Referring to fig. 1-3, in some embodiments, the core pin removal tool 200 includes at least one set of snap-fit components; each of the clamping assemblies includes two clamping portions 220 disposed opposite to each other in a radial direction of the through-hole 212.

Specifically, in each set of the clamping assembly, each clamping portion 220 is clamped into a corresponding one of the teeth 111, so that two sets of oppositely arranged clamping structures can be formed, and the firmness and stability of connection between the core pin disassembling tool 200 and the threaded sleeve 110 can be enhanced, so that the core pin disassembling tool 200 is not easy to loosen when the threaded sleeve 110 is subsequently driven to rotate by the core pin disassembling tool 200. Of course, in other embodiments, two clamping portions 220 of the same set of clamping assemblies are not disposed opposite to each other along the radial direction of the through hole 212.

When the multiple groups of clamping components are arranged, the firmness and stability of the connection between the core needle assembly and disassembly tool 200 and the thread sleeve 110 can be further enhanced, so that the core needle assembly and disassembly tool 200 is not easy to loose when the core needle assembly and disassembly tool 200 subsequently drives the thread sleeve 110 to rotate.

Referring to fig. 1 to 3, in some embodiments, the clamping portion 220 includes a first clamping portion 221 disposed at a first end of the protective sleeve 210, and a second clamping portion 222 disposed at an end of the first clamping portion 221 away from the protective sleeve 210; a stepped portion for fitting with the thread opening 111 of the thread bush 110 is configured between the first and second engagement portions 221 and 222.

Specifically, the first clamping portion 221 protrudes upward from the top end of the protective sleeve 210, and the second clamping portion 222 protrudes upward from a top end portion area of the first clamping portion 221, which are stepped. In this way, when the threaded sleeve 110 is designed for different diameters, different areas of the stepped portion can be selected to be engaged with the tooth mouth 111, so that the application range of the core pin attaching/detaching tool 200 is wider. For example, the first engaging portion 221 or the second engaging portion 222 may engage with the tooth mouth 111. Specifically, the first clamping portion 221 and the second clamping portion 222 are arranged along the radial direction of the threaded sleeve 110, one of the first clamping portion 221 and the second clamping portion 222 located on the inner side can be clamped with the tooth mouth 111 on the threaded sleeve 110 with smaller radial dimension, and one of the first clamping portion 221 and the second clamping portion 222 located on the outer side can be clamped with the tooth mouth 111 on the threaded sleeve 110 with larger radial dimension, so that the threaded sleeve 110 with different dimensions is applicable.

Referring to fig. 1-3, preferably, in some embodiments, the step has a first step surface 2211 and a second step surface 2221 connected to each other; the first step surface 2211 is arranged on the first clamping part 221, and the second step surface 2221 is arranged on the second clamping part 222; the first engaging portion 221 is configured to engage with the threaded opening 111 so that the first step surface 2211 can abut against the bottom wall of the threaded opening 111, and the second engaging portion 222 is configured to extend into the threaded sleeve 110 so that the second step surface 2221 can be attached to the inner wall of the threaded sleeve 110.

Specifically, the second clamping portion 222 protrudes upward from the inner area on the top surface of the first clamping portion 221, so that the first clamping portion 221 can be clamped with the tooth mouth 111 on the threaded sleeve 110 with a larger radial dimension, and the second clamping portion 222 can be clamped with the tooth mouth 111 on the threaded sleeve 110 with a smaller radial dimension. The first step surface 2211 is a top surface of the first engaging portion 221, and the second step surface 2221 is an outer sidewall of the second engaging portion 222. When the first clamping portion 221 is clamped into the tooth 111, the second clamping portion 222 can extend into the threaded sleeve 110, and the outer sidewall of the second clamping portion 222 is attached to the inner wall of the threaded sleeve 110, so as to limit the position, enhance the firmness and stability after clamping, and prevent the core needle assembly and disassembly tool 200 from loosening when the threaded sleeve 110 is subsequently driven to rotate.

Of course, in other embodiments, the second engaging portion 222 may protrude upward from an outer region on the top surface of the first engaging portion 221.

Referring to fig. 1-3, in some embodiments, first bayonet 221 is preferably arcuate in shape that is capable of matching the shape and size of mouth 111.

Specifically, since the thread bush 110 is generally circular, and the thread 111 is formed by being recessed upward from the bottom end of the thread bush 110, the thread 111 also extends in an arc shape. When the first clamping portion 221 is set to be arc-shaped matching with the shape and the size of the tooth mouth 111, the firmness of the first clamping portion 221 in clamping can be higher, and the first clamping portion 221 is not easy to separate from the tooth mouth 111 when the core pin dismounting tool 200 subsequently drives the thread bush 110 to rotate.

Referring to fig. 1-3, preferably, in some embodiments, the first step surface 2211 is configured to be planar.

Specifically, the top surface of the first clamping portion 221 is planar, so that the first clamping portion can be better attached to the bottom wall of the dental orifice 111, and the firmness of the first clamping portion and the bottom wall after clamping is better.

Referring to fig. 1-3, preferably, in some embodiments, the second step surface 2221 is configured to be planar or arcuate.

Specifically, the outer sidewall of the second clamping portion 222 is a plane or an arc surface, preferably an arc surface. When the first engaging portion 221 engages with the tooth 111, the outer wall of the second engaging portion 222 engages with the inner wall of the threaded sleeve 110. Because the threaded sleeve 110 is generally circular, i.e. the inner wall of the threaded sleeve is an arc surface, the outer side wall of the second clamping portion 222 is also provided with an arc surface matched with the second clamping portion, so that the two clamping portions can be attached to each other more tightly, and further the firmness and stability after clamping are enhanced.

Referring to fig. 1-3, in some embodiments, the guard sleeve 210 preferably further includes a second end disposed opposite the first end; a first opening is opened at one side of the protective cover 210 so that the receiving chamber 211 is constructed as a semi-closed chamber from the first end to the second end.

Specifically, the second end is the bottom end of the protecting sleeve 210, and the front side of the protecting sleeve 210 is provided with a first opening communicated with the accommodating cavity 211. By constructing the accommodating cavity 211 as a semi-closed cavity, not only can protection of the ejector rod 120 of the core needle 100 placed therein be realized, but also the ejector rod 120 can be conveniently moved in and out of the accommodating cavity 211 from the first opening, so that the operation is more convenient.

Preferably, the guard 210 in the illustrated embodiment is semi-hollow cylindrical. The protection sleeve 210 is equivalent to a hollow cylinder cut out in half along the axial direction thereof, and its projection in the up-down direction is in the shape of a half hollow ring. It can be appreciated that, when the central angle of the hollow circular ring is larger, the protection of the ejector rod 120 is more in place, but the first opening on one side of the accommodating cavity 211 is smaller, the ejector rod 120 is not easy to enter the accommodating cavity 211; when the central angle of the hollow circular ring is smaller, the first opening on one side of the accommodating cavity 211 is larger, the ejector rod 120 is easier to enter the accommodating cavity 211, but the protection of the ejector rod 120 may not be in place. In this embodiment, the central angle of the hollow circular ring is 180 degrees, which can both be considered, and the first opening on one side of the accommodating cavity 211 is larger on the premise of ensuring that the ejector rod 120 is protected in place as much as possible, so that the ejector rod 120 is easier to enter and exit the accommodating cavity 211 when being disassembled and assembled, and the disassembly and assembly operation is simpler and more convenient.

In other embodiments, the central angle of the hollow ring may be greater than 180 degrees or less than 180 degrees.

In other embodiments, the protective sleeve 210 may be configured in other shapes, for example, a half hollow oval or a half hollow rectangle, which is projected in the up-down direction.

Referring to fig. 1-3, in some embodiments, the core pin removal tool 200 further preferably includes an operating member 230 disposed hollow and at the second end of the protective sheath 210; the inner cavity 231 of the operating member 230 communicates with the accommodating cavity 211; wherein, the radial dimension of the inner cavity 231 is larger than the radial dimension of the accommodating cavity 211, and the inner cavity 231 is used for accommodating the connecting disc 130 connected to one end of the ejector rod 120 facing away from the thread bush 110.

Specifically, the operating member 230 is connected to the bottom end of the cover 210 and extends downward, and the cavity 231 is configured to receive the larger-sized connection pad 130 connected to the bottom end of the stem 120. Thus, in addition to protecting the jack 120 by the protective sleeve 210, the connection pad 130 can be protected by the operation piece 230 from being damaged by knocks. And, when the core pin assembling and disassembling tool 200 moves upwards to complete the clamping, the ejector rod 120 moves downwards relative to the core pin assembling and disassembling tool 200, and the part of the ejector rod 120 close to the bottom end also enters the inner cavity of the operating member 230 and can be protected by the operating member 230, so that more comprehensive protection is provided. In use, the operator holds the operating member 230 to complete the engagement between the engaging portion 220 and the tooth 111 and drive the core needle 100 to rotate. Of course, in other embodiments, two driving members may be provided, and the operating member 230 is driven to move up and down and rotate horizontally by the two driving members, where the driving members may be an air cylinder or a motor.

Referring to fig. 1 to 3, in some embodiments, the inner chamber 231 communicates with the accommodating chamber 211 through a communication hole 2321; the radial dimension of the inner cavity 231 is larger than the radial dimension of the communication hole 2321.

Specifically, the operating member 230 includes a top plate 232 and a side plate 233, the top plate 232 is fixedly connected to the bottom end surface of the protective sleeve 210, and the side plate 233 extends downward from the top plate 232. The center of the top plate 232 is hollowed out to form a communication hole 2321, the radial dimension of the communication hole 2321 is equal to that of the accommodation chamber 211, and the ejector pin 120 can be moved downward into the inner chamber 231 via the communication hole 2321.

Referring to fig. 1 to 3, in some embodiments, the operation member 230 is provided at one side thereof with a second opening communicating with the first opening for the connection pad 130 of the core pin 100 to be placed in the cavity 231.

Specifically, the front side of the operation member 230 is provided with a second opening communicating with the inner cavity 231. When the jack 120 enters the accommodating chamber 211 through the first opening, the connection disc 130 at the bottom end of the jack 120 enters the inner cavity 231 of the operation member 230 through the second opening, that is, the state shown in fig. 1.

Referring to fig. 1 to 3, preferably, in some embodiments, the operation member 230 extends in the up-down direction, and the second openings are distributed in a partial region of the operation member 230 in the up-down direction.

Specifically, the second opening is disposed at the front side of the side plate 233 and is only located in the upper region of the side plate 233, and the lower region of the side plate 233 is in a complete ring shape, so that the overall strength is higher, the shape is more regular, and the operator can conveniently hold the side plate 233. In use, the operator holds the lower region of the side plate 233 to complete the engagement with the core pin 100 and rotate the core pin 100.

When the disassembly tool of the present application is used for disassembly, the connection pad 130 is first removed from the driving piece to which it is connected, similar to the prior art. The core pin attaching/detaching tool 200 is placed on the rear side of the ejector pin 120 of the core pin 100, and the engaging portion 220 is located below the thread bush 110. Then, the core pin attaching/detaching tool 200 is moved forward so that the ejector pin 120 of the core pin 100 enters the accommodating chamber 211 from the first opening on the front side of the accommodating chamber 211, and the land 130 enters the inner chamber 231 from the second opening on the front side of the inner chamber 231. The core pin removal tool 200 is then rotated horizontally to align the snap-fit portion 220 with the tooth aperture 111 on the threaded sleeve 110. And then the core pin assembling and disassembling tool 200 is pushed upwards, so that the clamping part 220 is clamped into the corresponding tooth mouth 111, and the connection with the core pin 100 can be completed. Then, the core pin assembling and disassembling tool 200 is horizontally rotated to drive the threaded sleeve 110 connected with the tool to synchronously rotate, so that the tool can be assembled or disassembled.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application shall be subject to the appended claims.

Claims (10)

1. A core pin removal tool (200) for removing a core pin (100), the core pin removal tool (200) comprising:

a protective sleeve (210) provided with a containing cavity (211) for containing the ejector rod (120) of the core needle (100), wherein a first end of the protective sleeve (210) is provided with a penetrating hole (212) communicated with the containing cavity (211); and

a clamping part (220) arranged at the first end of the protective sleeve (210);

the clamping part (220) is configured to be in clamping fit with a threaded sleeve (110) arranged on the ejector rod (120) penetrating out of the penetrating hole (212), so that the threaded sleeve (110) can be driven to synchronously rotate when the protective sleeve (210) rotates around an axis.

2. The core pin removal tool (200) of claim 1, wherein the core pin removal tool (200) comprises at least one set of snap-fit assemblies;

each clamping assembly comprises two clamping parts (220) which are oppositely arranged along the radial direction of the penetrating hole (212).

3. The core pin removal tool (200) of claim 1, wherein the clamping portion (220) comprises a first clamping portion (221) disposed at the first end of the protective sleeve (210), and a second clamping portion (222) disposed at an end of the first clamping portion (221) remote from the protective sleeve (210);

a step part which is used for being matched with the tooth mouth (111) of the thread sleeve (110) is formed between the first clamping part (221) and the second clamping part (222).

4. The core pin attaching and detaching tool (200) according to claim 3, wherein the step portion has a first step surface (2211) and a second step surface (2221) connected to each other;

the first step surface (2211) is arranged on the first clamping part (221), and the second step surface (2221) is arranged on the second clamping part (222);

the first clamping portion (221) is used for being clamped into the tooth mouth (111) so that the first step surface (2211) can be abutted against the bottom wall of the tooth mouth (111), and the second clamping portion (222) is used for extending into the thread bush (110) so that the second step surface (2221) can be attached to the inner wall of the thread bush (110).

5. The core pin disassembly tool (200) according to claim 4, wherein the first step surface (2211) is configured to be planar.

6. The core pin removal tool (200) of claim 4, wherein the second step surface (2221) is configured to be planar or cambered.

7. The core pin disassembly tool (200) according to any one of claims 1-6, wherein said protective sheath (210) further comprises a second end disposed opposite said first end;

a first opening is formed in one side of the protective sleeve (210), so that the accommodating cavity (211) is constructed as a semi-closed cavity from the first end to the second end.

8. The core pin removal tool (200) of claim 7, wherein the core pin removal tool (200) further comprises an operating member (230) disposed hollow and disposed at the second end of the protective sleeve (210);

an inner cavity (231) of the operating piece (230) is communicated with the accommodating cavity (211);

the radial dimension of the inner cavity (231) is larger than that of the accommodating cavity (211), and the inner cavity (231) is used for accommodating a connecting disc connected to one end, away from the threaded sleeve (110), of the ejector rod (120).

9. The core pin attaching and detaching tool (200) according to claim 8, wherein the inner cavity (231) communicates with the accommodating cavity (211) through a communication hole (2321);

the radial dimension of the inner cavity (231) is larger than the radial dimension of the communication hole (2321).

10. The core pin disassembly tool (200) according to claim 8, wherein a second opening communicating with the first opening is provided on one side of the operation member (230) for placing the connection pad of the core pin (100) into the inner cavity (231).

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