Online pin detacher

Abstract

An online pin detacher is improved on the basis of an existing shell, an existing jackscrew, an existing punching needle and the like, that is, a limiting part is arranged at the bottom of the shell, and the limiting part can support the bottom of a workpiece to be detached and apply acting force, opposite to the punching-out direction of the punching needle, of the workpiece to be detached. The limiting part is provided with a pin discharging hole for discharging pins to be disassembled and assembled, and the pin discharging hole and the pin punching hole are coaxially arranged. Compared with the prior art, the online pin detacher has the advantages that the limiting part is arranged at the bottom of the shell, so that the limiting part can support the bottom of the workpiece to be detached, and when the workpiece is subjected to acting force in the punching direction of the punching needle, the limiting part can reversely apply supporting force to the workpiece to be detached, so that the workpiece to be detached is prevented from being damaged. By means of the structure, the to-be-disassembled workpiece can receive balanced acting force when the pin is taken out, so that the situation that the to-be-disassembled workpiece is bent and deformed in the stress direction due to uneven stress is avoided, meanwhile, falling of the pin from the workpiece is facilitated, and disassembling operation is easier and faster.

Description

Technical Field

[0001] The utility model relates to the technical field of pin removers, in particular to an online pin remover. Background Art

[0002] Pins are usually cylindrical parts made of wood, metal or other materials. They are used to fix several separate objects together or serve as supports for hanging one object on another. They are one of the common fasteners in the mechanical field. Among them, elastic cylindrical pins are widely used for positioning, connecting and fixing between parts due to their good connection performance.

[0003] When removing the pin, it is usually necessary to use a tool, such as the "A Pin Removal Tool" disclosed in the Chinese Utility Model Patent No. 202221257819.2 (Authorization Announcement No. CN217620355U). The tool includes a shell, a punch, a spring, an adjusting screw and a shell cover. One end of the punch is inserted from the punch hole at the end of the shell, and the punch seat at the other end of the punch is pushed to the adjusting screw by the spring, and the punch is extended or retracted by adjusting the adjusting screw, and the punch is extended to punch out the pin. However, this type of pin removal tool has the following problems when in use: First, the workpiece to be disassembled is only subjected to a unidirectional force, and it is easy for the workpiece to bend and deform along the force direction due to uneven force, and this bending deformation also makes it difficult for the pin to detach from the workpiece; second, the punch needs to be on the same axis as the pin to push the pin out, and because the pin is thin, it is more difficult to align the punch with the pin. This defect is particularly obvious in some situations where pins (such as elastic cylindrical pins) need to be disassembled online. Therefore, this type of pin removal tool needs to be improved. Utility Model Content

[0004] The first technical problem to be solved by the present invention is to provide an online pin remover which is not easy to cause deformation of the workpiece to be disassembled and can improve the disassembly efficiency in response to the above-mentioned existing technical status.

[0005] The second technical problem to be solved by the present invention is to provide an online pin remover that is convenient for punching and aligning pins in response to the above-mentioned existing technical status.

[0006] The technical solution adopted by the present invention to solve the first technical problem is as follows: the pin online remover includes:

[0007] The shell is hollow inside and includes an upper section, a middle section and a lower section, and the upper section is a screw hole;

[0008] A top screw is provided in the upper section, and is provided with an external thread matching the screw hole, and can move up and down along the axial direction of the shell by rotation;

[0009] The punch needle, the middle section is a punch needle channel, the punch needle is arranged in the punch needle channel and is sleeved with an elastic member, the elastic member acts on the punch needle, so that the punch needle always has a tendency to move toward the push screw, the lower section is a punch needle hole for the punch needle to punch out, and the punch needle can be punched out of the punch needle hole under the action of the push screw; it is characterized by:

[0010] A limiting portion is provided at the bottom of the shell, which can support the bottom of the workpiece to be disassembled and apply a force to the workpiece to be disassembled that is opposite to the punching direction of the punch needle. The limiting portion is provided with a pin discharge hole for discharging the pins to be disassembled, and the pin discharge hole and the punch needle hole are coaxially arranged.

[0011] To prevent the limiting portion from scratching the workpiece to be disassembled, an elastic pad is preferably provided on the side of the limiting portion facing the workpiece to be disassembled. The elastic pad can be made of a material such as silicone. This ensures soft contact between the workpiece to be disassembled and the limiting portion, thereby protecting the workpiece from being scratched by the contact of the limiting portion. Furthermore, by replacing the elastic pad with different thicknesses, smaller workpieces can also fit within the limiting portion, thereby expanding the application range of the disassembler.

[0012] In order to place the workpiece to be disassembled into the limiting portion, preferably, the limiting portion is arc-shaped and has an opening for placing the workpiece to be disassembled therein. Correspondingly, the elastic pad is also arc-shaped and is arranged on the inner side of the limiting portion.

[0013] Furthermore, when the pin to be disassembled is an elastic cylindrical pin, the relationship between the radius r1 of the punch and the inner diameter r2 and outer diameter r3 of the elastic cylindrical pin satisfies the following: r2≤r1≤r3. In order for the punch to eject the elastic cylindrical pin, the radius of the punch cannot be too large or too small. If the radius of the punch is too large, the pin cannot be ejected from the workpiece to be disassembled. If the radius of the punch is too small, the punch will pass through the middle of the elastic cylindrical pin and will not be able to apply force to the elastic cylindrical pin. Therefore, the radius r1 of the punch and the inner diameter r2 and outer diameter r3 of the elastic cylindrical pin must satisfy the following: r2≤r1≤r3.

[0014] To address the second technical problem, the punch pin preferably has an axially protruding center projection at its bottom to form a positioning portion for insertion into the center hole of the elastic cylindrical pin. When the positioning portion is inserted into the center hole of the elastic cylindrical pin, the punch pin can be aligned with the elastic cylindrical pin, so that the punch pin, the elastic cylindrical pin, and the pin removal hole are aligned on the same axis. At this time, the punch pin acts on the elastic cylindrical pin to quickly eject the elastic cylindrical pin from the pin removal hole.

[0015] To better align the punch and the elastic cylindrical pin, the positioning portion preferably has a longitudinal cross-section that tapers from top to bottom in an inverted triangular shape, i.e., an inverted cone. The inverted cone's tip facilitates automatic alignment of the punch and the elastic cylindrical pin, allowing them to quickly align.

[0016] In order to make the punch needle always have a tendency to move toward the top screw, preferably, the radius r5 of the punch needle channel and the inner diameter r4 of the punch needle hole satisfy: r5>r4, and the shell also includes a step surface connecting the punch needle channel and the punch needle hole, and the top of the punch needle extends radially to form a stop portion, and the elastic member is a compression spring, and the two ends of the compression spring are respectively against the step surface and the bottom surface of the stop portion.

[0017] In order to prevent the housing from rotating with the jackscrew, a handle is preferably provided on the housing for rotation. When in use, the handle is rotated to form a certain angle with the housing to increase the lever arm of the housing, making it easier to operate and hold, or the handle is positioned on an external component to prevent the housing from rotating with the jackscrew.

[0018] Furthermore, the outer side of the housing is designed with a flat surface for abutting against a workpiece to be disassembled. This flat surface allows the online pin remover to abut against the workpiece during use, preventing rolling or slipping between the online pin remover and the workpiece during use.

[0019] Compared with the prior art, the advantages of the present invention are: since the pin online remover is provided with a limiting portion at the bottom of the shell, the limiting portion can be used to support the bottom of the workpiece to be disassembled, and when the workpiece is subjected to the force in the direction of the punching needle, the limiting portion can apply a supporting force to the workpiece to be disassembled in the reverse direction, so that the workpiece to be disassembled can receive a balanced force when the pin is removed, thereby avoiding the workpiece to be disassembled from bending and deforming along the force direction due to uneven force, and at the same time it is also beneficial for the pin to fall from the workpiece, making the disassembly and assembly operation easier and faster. This structure is very effective when applied to online disassembly and assembly operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model (without the top line and the punch);

[0021] Figure 2 A cross-sectional view of an embodiment of the present utility model;

[0022] Figure 3 This is a schematic diagram of the structure in which the positioning portion contacts the elastic cylindrical pin in an embodiment of the present utility model;

[0023] Figure 4 for Figure 3 Enlarged view of point C in the middle;

[0024] Figure 5 This is a schematic structural diagram of a punch needle ejecting an elastic cylindrical pin in an embodiment of the present utility model. DETAILED DESCRIPTION

[0025] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0026] like Figure 1-5 FIG. 1 is a preferred embodiment of the present invention. The pin online remover of this embodiment includes a housing 1 , a top screw 2 , a punch 3 and an elastic member 4 .

[0027] Among them, the outer side surface of the shell 2 is designed to be used to press the pin of the online remover against the abutment surface of the workpiece A to be disassembled. The interior of the shell 1 is hollow and includes an upper section, a middle section and a lower section. The top screw 2 is arranged in the upper section, and the upper section is a screw hole 17. The top screw 2 is provided with an external thread that matches the screw hole 17 (the top screw is designed as a screw in the figure) and can move up and down along the axial direction of the shell 1 by rotation. The middle section is the punch needle channel 11, and the punch needle 3 is arranged in the punch needle channel 11. The lower section is the punch needle hole 12 for the punch needle 3 to punch out. The punch needle 3 is provided with an elastic member 4, and the radius r5 of the punch needle channel 11 and the inner diameter r4 of the punch needle hole 12 satisfy: r5>r4. The punch needle channel 11 and the punch needle hole 12 are connected by a step surface 15. The top of the punch needle 3 extends radially to form a stopper 32. The above-mentioned elastic member 4 is a compression spring, and the two ends of the compression spring are respectively against the step surface 15 and the bottom surface of the stopper 32. The compression spring acts on the punch needle 3, so that the punch needle 3 always has a tendency to move toward the push screw 2. When the push screw 2 moves downward, the punch needle 3 overcomes the spring force under the pressure of the push screw 2 and moves downward and punches out from the punch needle hole 12. When the push screw 2 moves upward, the punch needle 3 moves upward and retreats into the punch needle channel 11 under the action of the spring force.

[0028] The bottom of the housing 1 is provided with a limiting portion 13 that can support the bottom of the workpiece A to be disassembled and apply a force to the workpiece A to be disassembled in the opposite direction of the punch 3. The limiting portion 13 is arc-shaped and has an opening 16 for the workpiece A to be disassembled to be placed therein. The limiting portion 13 is also provided with a pin hole 14 for the pins to be disassembled to be discharged. The pin hole 14 is coaxially arranged with the punch hole 12. The inner side of the limiting portion 13 is provided with an elastic pad. In this embodiment, a silicone pad 5 is used to ensure soft contact between the workpiece A to be disassembled and the limiting portion 13, thereby preventing the limiting portion 13 from scratching the workpiece A to be disassembled. The housing 1 is also rotatably provided with a handle 6. When in use, the handle 6 is rotated to form a certain angle with the housing 1, thereby increasing the lever arm of the housing 1, making it easier to operate and hold, or to limit the handle 6 on an external component to prevent the housing 1 from rotating with the top screw 2.

[0029] When the pin to be disassembled is an elastic cylindrical pin B, the radius of the punch 3 cannot be too large or too small. If the radius of the punch 3 is too large, the pin cannot be punched out of the workpiece A to be disassembled. If the radius of the punch 3 is too small, the punch 3 will pass through the middle of the elastic cylindrical pin B and cannot apply force to the elastic cylindrical pin B. Therefore, the relationship between the radius r1 of the punch 3 and the inner diameter r2 and outer diameter r3 of the elastic cylindrical pin B satisfies: r2≤r1≤r3. Moreover, in this embodiment, the bottom center of the punch needle 3 is also formed with an axial protrusion to form a positioning portion 31 for inserting into the center hole of the elastic cylindrical pin B. The longitudinal section of the positioning portion 31 is preferably designed to be an inverted triangular structure that gradually becomes smaller from top to bottom, that is, an inverted cone structure. The tip of the inverted cone can more conveniently allow the axis of the punch needle 3 and the elastic cylindrical pin B to be automatically aligned. When the positioning portion 31 is inserted into the center hole of the elastic cylindrical pin B, the punch needle 3 can be aligned with the elastic cylindrical pin B, so that the punch needle 3, the elastic cylindrical pin B and the pin removal hole 14 are quickly on the same axis. At this time, the punch needle 3 acts on the elastic cylindrical pin B to push the elastic cylindrical pin B out of the pin removal hole 14.

[0030] When the workpiece A to be disassembled is the operating rod of the drawer test mechanism in the drawer circuit of an 8PT low-voltage cabinet, the existing method of disassembling the elastic cylindrical pin B requires first disassembling the drawer panel, the integrated protection in the machine circuit and other accessories, and then using a knocking tool to disassemble the elastic cylindrical pin B on the operating rod of the drawer test mechanism. The reinstallation is done in the opposite way. The whole process is labor-intensive and takes about 2 hours. However, with the help of the pin online remover, there is no need to disassemble the panel, the integrated protection in the machine circuit and other accessories to disassemble the elastic cylindrical pin B. The whole process can be shortened to less than 10 minutes, reducing the labor intensity and improving the work efficiency. The specific usage is as follows:

[0031] See Figure 3 and Figure 5 , place the pin online remover from the opening 16 onto the drawer test mechanism, so that the limit part 13 supports the operating rod in the drawer test mechanism, and the plane is pressed against the abutment surface of the drawer test mechanism, rotate the top screw 2 to move the top screw 2 downward and act on the punch needle 3, the punch needle 3 overcomes the elastic force of the compression spring and moves downward to punch out from the punch needle hole 12, the positioning part 31 of the punch needle 3 is inserted into the center hole of the elastic cylindrical pin B, the axis of the punch needle and the elastic cylindrical pin is automatically aligned, so that the elastic cylindrical pin B and the punch needle 3 are on the same axis, continue to rotate the top screw 2, the punch needle 3 moves further downward and acts on the elastic cylindrical pin B, and the elastic cylindrical pin B is ejected from the pin hole 14.

Claims

1. A pin online remover, comprising: The housing (1) is hollow inside and comprises an upper section, a middle section and a lower section, wherein the upper section is a screw hole (17); A top screw (2) is provided in the upper section, and the top screw (2) is provided with an external thread that matches the screw hole (17), and can move up and down along the axial direction of the housing (1) by rotating; The punching needle (3) is provided in the punching needle channel (11) and is sleeved with an elastic member (4). The elastic member (4) acts on the punching needle (3) so that the punching needle (3) always has a tendency to move toward the push screw (2). The lower section is a punching needle hole (12) for the punching needle (3) to punch out. The punching needle (3) can punch out from the punching needle hole (12) under the action of the push screw (2); the characteristics are: The bottom of the housing (1) is provided with a limiting portion (13), which can support the bottom of the workpiece (A) to be disassembled and apply a force to the workpiece (A) to be disassembled that is opposite to the punching direction of the punching needle (3). The limiting portion (13) is provided with a pin discharge hole (14) for discharging the pins to be disassembled, and the pin discharge hole (14) and the punching needle hole (12) are coaxially arranged.

2. The pin online remover according to claim 1, characterized in that: The limiting portion (13) is provided with an elastic pad on the side facing the workpiece (A) to be disassembled.

3. The pin online remover according to claim 2, characterized in that: The limiting portion (13) is arc-shaped and has an opening (16) for placing the workpiece (A) to be disassembled. Correspondingly, the elastic pad is also arc-shaped and is arranged on the inner side of the limiting portion (13).

4. The pin online remover according to any one of claims 1 to 3, characterized in that: When the pin to be disassembled is an elastic cylindrical pin (B), the relationship between the radius r1 of the punch (3) and the inner diameter r2 and outer diameter r3 of the elastic cylindrical pin (B) satisfies: r2≤r1≤r3.

5. The pin online remover according to claim 4, characterized in that: The center of the bottom of the punching needle (3) is axially protruding to form a positioning portion (31) for inserting into the center hole of the elastic cylindrical pin (B).

6. The pin online remover according to claim 5, characterized in that: The longitudinal section of the positioning portion (31) is an inverted triangle structure that gradually becomes smaller from top to bottom.

7. The pin online remover according to any one of claims 1 to 3, characterized in that: The radius r5 of the punching needle channel (11) and the inner diameter r4 of the punching needle hole (12) satisfy the following relationship: r5>r4. The housing (1) further includes a stepped surface (15) connecting the punching needle channel (11) and the punching needle hole (12). The top of the punching needle (3) radially extends to form a stopper (32). The elastic member (4) is a compression spring, and the two ends of the compression spring respectively abut against the stepped surface (15) and the bottom surface of the stopper (32).

8. The pin online remover according to any one of claims 1 to 3, characterized in that: A handle (6) is also rotatably provided on the housing (1).

9. The pin online remover according to any one of claims 1 to 3, characterized in that: The outer side surface of the shell (1) is designed with a plane for abutting against a supporting surface of a workpiece (A) to be disassembled.

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