Taking-out device for rubber core

Abstract

The utility model discloses a rubber core taking-out device, relates to the technical field of dismounting devices, and is used for solving the technical problem that a rubber core of a main shaft encoder is difficult to take out. The rubber core taking-out device comprises a tightening sleeve and a jacking rod, a tightening cavity is formed in the tightening sleeve, and the tightening sleeve is provided with a first opening and a second opening which are opposite to each other; the first opening and the second opening are both communicated with the tightening cavity; at least part of the tightening sleeve is suitable for extending into the fixed seat, so that the rubber core extends into the tightening cavity through the first opening; the jacking rod is suitable for extending into the tightening cavity through the second opening so as to eject the rubber core out.

Description

Technical Field

[0001] This utility model relates to the field of disassembly device technology, specifically to a device for removing a rubber core. Background Technology

[0002] As the manufacturing industry moves towards higher precision and intelligence, the demands for machining accuracy and efficiency in CNC machine tools are constantly increasing. The open-loop control mode of traditional mechanical transmission is no longer sufficient to meet the stringent requirements of complex processes such as thread machining and rigid tapping. Under this technological development trend, spindle encoders have emerged. With their real-time monitoring and precise feedback characteristics, they have become a bridge connecting mechanical motion and digital control, completely changing the control logic of machine tool spindles.

[0003] Spindle encoders in related technologies typically include a mounting base, a core, and pins. The mounting base has a cylindrical mounting cavity with protruding locking parts on its inner wall. After being compressed and inserted into the mounting cavity, the core abuts against these protruding locking parts under a restoring force, thus confining the core within the cavity. The pins are connected to the core. Currently, when repairing the spindle encoder wiring, the connection is usually broken using destructive methods. This inevitably renders the core and mounting base unusable, increasing repair costs. Furthermore, destructive methods deform the locking device on the mounting base at the encoder wiring connection, prolonging repair time and increasing repair difficulty.

[0004] In related technology, CN220241346U discloses a tool for removing the core of an encoder plug male, comprising a pressing component and a fixing plate fixedly connected to the plug male. The pressing component includes a disassembly sleeve, the inner end of which is inserted into the socket of the plug male, and a force plate provided at the outer end of the disassembly sleeve. A push rod is provided inside the disassembly sleeve, the inner end of which is located inside the disassembly sleeve, and the outer end of which passes through the disassembly sleeve and the force plate and is connected to an external push plate. In use, by manually pressing the fixing plate and the force plate, the disassembly sleeve can be inserted into the socket of the plug male, and the snap on the core is pushed by the annular opening, causing the snap on the core to disengage from the slot in the plug male. Then, by manually pushing the push plate, the push rod pushes the pin on the core, thereby pushing the core with the pin out of the plug male. However, when the socket of the plug male is provided with a snap-fit ​​protrusion, this tool cannot achieve snap-fit ​​between the core and the plug male. Utility Model Content

[0005] This invention provides a device for removing the rubber core, which solves the technical problem of difficulty in removing the rubber core of a spindle encoder.

[0006] This application provides a device for removing a rubber core, which includes a tightening sleeve and a pressing rod. The tightening sleeve has a tightening cavity formed inside, and the tightening sleeve is provided with a first opening and a second opening opposite to each other. Both the first opening and the second opening are in communication with the tightening cavity. At least a portion of the tightening sleeve is adapted to extend into a fixing seat so that the rubber core extends into the tightening cavity through the first opening. The pressing rod is adapted to extend into the tightening cavity through the second opening so as to push out the rubber core.

[0007] Based on the aforementioned technical means, when the tightening sleeve abuts against the fixed seat, the alignment of the first opening with the rubber core allows for precise positioning of the rubber core, ensuring that the rubber core can contract under its elastic force. Thus, as the tightening sleeve extends further into the fixed seat, the rubber core inside the fixed seat can smoothly enter the tightening cavity without any displacement or jamming. The push rod, extending into the tightening cavity through the second opening to eject the rubber core, offers high convenience. Maintenance personnel do not need complex tools; they only need to insert the push rod along the second opening and apply appropriate pressure to easily remove the rubber core, facilitating maintenance of the spindle encoder. Furthermore, the non-destructive removal method avoids safety hazards such as flying debris and component damage that may result from destructive disassembly, reducing operational risks.

[0008] In addition, the removal device does not damage the pin, the core, or the mounting base during the removal of the core, reducing maintenance costs and equipment downtime losses caused by component damage.

[0009] In one possible implementation, the outer peripheral wall of the pressure rod is provided with a first external thread, and the inner wall of the compression cavity is provided with a first internal thread that mates with the first external thread.

[0010] Based on the aforementioned technical means, since the outer peripheral wall of the top pressure rod is provided with a first external thread and the inner wall of the tightening cavity is provided with a corresponding first internal thread, the two can form a threaded transmission mechanism. In this way, axial movement can be achieved by rotating the top pressure rod, avoiding the problem of excessive impact force that may be caused by direct pressure. Moreover, maintenance personnel can achieve its axial movement by rotating the top pressure rod, making it easier and more convenient for maintenance personnel to disassemble the rubber core.

[0011] In one possible implementation, the removal device further includes a clamping member with a through hole and a second internal thread inside the through hole, the second internal thread being adapted to engage with the second external thread of the fixing seat; a limiting part is provided on the inner wall of the through hole, and a mating part is provided on the outer peripheral wall of the tightening sleeve; when the second internal thread and the second external thread are in sliding engagement, the outer peripheral wall of the tightening sleeve can abut against the limiting part, so that the tightening sleeve moves along the direction from the first opening to the tightening cavity with the clamping member.

[0012] According to the above-mentioned technical means, in this embodiment, the second internal thread in the through hole and the second external thread of the fixed seat are engaged, so that the clamping member can be moved axially along the fixed seat by rotating the clamping member. In addition, since a limiting part is provided on the inner wall of the through hole, and a mating part is provided on the outer peripheral wall of the shrinking sleeve that can abut against the limiting part, the engagement of the limiting part and the mating part can limit the shrinking sleeve. Thus, when the clamping member is rotated, the helical transmission characteristics of the thread allow the shrinking sleeve to move smoothly and accurately along the direction from the first opening to the shrinking cavity, effectively avoiding problems such as shaking and offset that may occur when manually operating the shrinking sleeve directly, ensuring that the shrinking sleeve can accurately align with the rubber core, and completely and stably insert the rubber core into the shrinking cavity. This reduces the risk of equipment damage caused by operational errors. Furthermore, by setting up the clamping member, maintenance personnel only need to rotate the clamping member to simultaneously move the shrinking sleeve, without the need for separate adjustment of the shrinking sleeve, simplifying the operation steps and improving overall work efficiency. In addition, the labor-saving characteristics of threaded drives also reduce the workload of maintenance personnel.

[0013] In one possible implementation, the limiting portion includes a first annular protrusion, and the mating portion includes a second annular protrusion.

[0014] Based on the aforementioned technical methods, the annular structure of the ring-shaped protrusion effectively disperses the force. During the removal of the rubber core, when the top pressure rod applies an ejection force, the annular protrusion evenly distributes the force around the circumference, avoiding localized stress concentration. This not only protects the tightening sleeve and clamping component but also extends the service life of the fixing seat and reduces maintenance costs due to component damage. Furthermore, the annular protrusion's structural design makes the fit between the tightening sleeve and clamping component smoother. Because the surface of the annular protrusion is relatively regular, frictional resistance is low during their relative movement, resulting in a smoother feel when the maintenance personnel rotate the clamping component, eliminating the need to overcome excessive friction and reducing operational difficulty.

[0015] In one possible implementation, an annular relief groove is provided on the inner wall of the through hole, and a positioning part that engages with a second annular protrusion is also formed between the annular relief groove and the first annular protrusion.

[0016] According to the above-mentioned technical means, since the inner wall of the through hole in this embodiment is provided with a tool relief groove, the tool relief groove can facilitate the removal of the tool after the cutting process is completed, reducing the risk of tool collision due to operational errors. In addition, the positioning part can cooperate with the circumferential of the second annular protrusion, so the positioning part can limit the circumferential of the second annular protrusion, avoiding the shrink sleeve and the rubber core from being misaligned, and reducing the probability of damage to the rubber core during the removal process.

[0017] In one possible implementation, the second internal thread, the relief groove, the positioning part, and the first annular protrusion are arranged sequentially along the axial direction of the through hole.

[0018] According to the above-mentioned technical means, when it is necessary to disassemble the rubber core, the shrinking sleeve can first be inserted into the through hole, so that the second annular protrusion of the shrinking sleeve is located inside the through hole, and the second annular protrusion is located at the positioning part between the second internal thread and the first annular protrusion. Then, the second internal thread and the second external thread are threaded together, and by rotating the clamping member, the rubber core can be extended into the shrinking cavity through the first opening. In addition, when machining the second internal thread, the relief groove, the positioning part, and the first annular protrusion inside the through hole, the axially arranged structure facilitates machining and production. That is, whether turning or milling, the parts can be machined sequentially according to their axial order, simplifying the machining process and improving machining efficiency.

[0019] In one possible implementation, the top pressure rod includes: a first force-applying part, a threaded connection part, and a top pressure part. The first force-applying part is adapted to apply a rotational force; the threaded connection part is connected to the first force-applying part, and the outer periphery of the threaded connection part is provided with a first external thread; the top pressure part is connected to the side of the threaded connection part opposite to the first force-applying part, and is adapted to abut against the rubber core.

[0020] Based on the aforementioned technical means, the first force-applying part, designed to apply rotational force, can adopt a shape that facilitates torque transmission, such as an external hexagon, internal hexagon, or Phillips head countersunk hole, making it convenient for maintenance personnel to apply torque. Compared to directly applying force to the rod body, the force-applying part reduces hand fatigue, allowing maintenance personnel to rotate the pressure rod more easily, improving operational comfort and durability, and thus increasing work efficiency. The threaded connection part forms a stable transmission structure through the engagement of the first external thread on the outer circumference and the first internal thread on the inner wall of the compression cavity. When rotating the first force-applying part, the threaded connection part converts the rotational motion into linear motion along the axial direction. The threaded transmission has high precision, and maintenance personnel can accurately control the displacement of the pressure part by precisely controlling the number of rotations.

[0021] In one possible implementation, a receiving groove is provided on the side of the top pressing portion away from the threaded connection portion, and the receiving groove is adapted to accommodate the pin inside the rubber core.

[0022] According to the aforementioned technical means, the receiving groove provides clearance for the pin within the rubber core. During the process of the pressing rod ejecting the rubber core, the pin can be completely accommodated within the receiving groove, avoiding direct contact with or compression from the pressing part. It is understandable that for small pins in precision equipment, if pressure is applied directly through the pressing part, the pin may bend or break due to uneven force or collision with hard objects, rendering the pin unusable. This embodiment of the application, by providing a receiving groove, ensures that the pin is nearly stress-free throughout the entire removal process, protecting the integrity of the pin and reducing maintenance costs.

[0023] In one possible implementation, the first force-applying part, the threaded connection part, and the top-pressing part are an integral structure.

[0024] Based on the aforementioned technical means, the first force-applying part, the threaded connection part, and the top-pressing part are integrally formed, eliminating connection gaps between components and ensuring their connection strength. During the ejection of the rubber core, the top-pressing rod needs to withstand significant axial force and torque. The integrated structure ensures that the force is evenly transmitted along the rod, avoiding operational failures caused by loosening or breakage of the connection parts. Compared to spliced ​​structures, the integrated structure eliminates stress concentration problems that may arise from welding, threaded connections, etc., effectively improving the overall strength and fatigue resistance of the top-pressing rod.

[0025] Furthermore, the integrated top pressure rod can be manufactured using a single forming process, such as forging, casting, or integral milling on a CNC machining center. Compared to a split structure that requires separate machining of each component before assembly, the integrated structure reduces machining steps and assembly processes, lowering the scrap rate caused by the accumulation of machining accuracy errors from multiple components.

[0026] In one possible implementation, the tightening sleeve includes a tightening cylinder, a mating part, and a second force-applying part arranged sequentially in a direction from the first opening to the second opening, and a tightening cavity is formed in the tightening cylinder.

[0027] It is understandable that when the second internal thread and the second external thread slide together, the limiting part of the shrink sleeve abuts against the mating part, and there is friction between them. Therefore, the shrink sleeve may rotate along with the clamping member, which would subject the rubber core abutting against the sleeve to a certain torque, potentially causing damage to the rubber core. This embodiment of the application uses a second force-applying part to facilitate force application by maintenance personnel, preventing the shrink sleeve from rotating along with the clamping member. This ensures that when the clamping member rotates axially, the shrink sleeve only moves axially, allowing the rubber core to extend into the shrinking cavity. Attached Figure Description

[0028] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application, and do not constitute an undue limitation of this application.

[0029] Figure 1 This is a schematic diagram of the structure of the removal device, the fixing base, and the adhesive core provided in the embodiments of this application;

[0030] Figure 2 Provided for the embodiments of this application Figure 1 A schematic diagram of the locking sleeve of the extraction device in the middle;

[0031] Figure 3 Provided for the embodiments of this application Figure 1 A schematic diagram of the top pressure rod of the extraction device in the middle;

[0032] Figure 4 Provided for the embodiments of this application Figure 1 A schematic diagram of the clamping component of the extraction device.

[0033] Icon labels:

[0034] 100 - Removal device; 200 - Fixing base; 300 - Glue core; 400 - Insert pin;

[0035] 10-Locking sleeve; 11-Locking cavity; 111-First internal thread; 12-First opening; 13-Second opening; 14-Matching part; 15-Tightening cylinder; 16-Second force application part;

[0036] 20-Top pressure rod; 20A-First force application part; 20B-Threaded connection part; 20C-Top pressure part; 20C1-Receiving groove; 21-First external thread; 30-Clamping part; 31-Through hole; 311-Second internal thread; 312-Limiting part; 313-Relief groove; 314-Positioning part. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0039] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0040] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, when describing pipelines, the terms "connected" and "linked" as used in this application have the meaning of establishing electrical connection. The specific meaning needs to be understood in conjunction with the context.

[0041] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0042] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0043] Please see Figure 1 , Figure 2 and Figure 3 This application provides a core removal device 100, which includes a tightening sleeve 10 and a pressing rod 20.

[0044] The shrinking sleeve 10 has a shrinking cavity 11, and the shrinking sleeve 10 has a first opening 12 and a second opening 13, both of which are connected to the shrinking cavity 11. The first opening 12, the second opening 13 and the shrinking cavity 11 can be arranged coaxially, which facilitates the processing of the shrinking cavity 11.

[0045] Additionally, at least a portion of the tightening sleeve 10 is adapted to extend into the fixing seat 200 so that the rubber core extends into the tightening cavity 11 through the first opening 12. It should be noted that the radial dimension of the portion of the tightening sleeve 10 extending into the fixing seat 200 needs to be smaller than the radial dimension of the protruding snap-fit ​​portion of the fixing seat 200. This prevents the tightening sleeve 10 from abutting against the protruding snap-fit ​​portion, thus preventing the tightening sleeve 10 from being unable to extend into the fixing seat 200.

[0046] It is understandable that after the rubber core 300 is compressed and inserted into the mounting cavity, it can abut against the protruding snap-fit ​​part in the fixing seat 200 under the action of the restoring force, thereby realizing the snap-fit ​​between the two. Therefore, the rubber core 300 can have a certain amount of shrinkage in the circumferential direction. In this embodiment of the application, by setting a shrinking sleeve 10, the shrinking cavity 11 of the shrinking sleeve 10 can accommodate the shrunken rubber core 300. Then, as the shrinking sleeve 10 gradually extends into the fixing seat 200, under the action of the squeezing force of the shrinking sleeve 10, the rubber core 300 will gradually extend into the shrinking cavity 11.

[0047] Optionally, the tightening sleeve 10 can also be made of an alloy material. For example, the alloy material can be 45# steel. Since 45# steel has a low cost and strong toughness, the cost of the tightening sleeve 10 can be reduced while ensuring high toughness. For example, the material of the tightening sleeve 10 can also be stainless steel, hard alloy, etc., and this application does not limit it.

[0048] Furthermore, the top pressure rod 20 is adapted to extend into the tightening cavity 11 through the second opening 13 to push out the rubber core 300. The structure of the top pressure rod 20 can be referred to in the following description, and will not be described in the embodiments of this application here.

[0049] Optionally, the pressure rod 20 can be made of plastic. For example, the plastic material can be polyoxymethylene (POM). Since the Shore hardness of POM is generally between 80-92 HD, it is lower than that of metal. Therefore, when the pressure part of the pressure rod 20 contacts the core 300 and applies pressure, because the hardness of POM is moderate and lower than that of the core 300, it will not easily leave scratches or indentations on the surface of the core 300 due to the higher hardness of metal. Thus, the POM pressure rod 20 can effectively protect the surface integrity of the core 300 while transmitting pressure, avoiding damage caused by excessive material hardness. For example, the plastic material can also be polyetheretherketone (PEEK), polytetrafluoroethylene (PTFE), or nylon (PA), etc., and this application does not limit this.

[0050] Optionally, the top pressure rod 20 can be made of an alloy material. For example, the alloy material can be alloy steel (e.g., 45# steel, 42CrMo steel), stainless steel, hard alloy, etc. This application does not limit this.

[0051] In this way, when the tightening sleeve 10 abuts against the fixed seat 200, the docking of the first opening 12 with the rubber core 300 enables precise positioning of the rubber core 300, ensuring that the rubber core 300 can contract under its elastic force. Thus, as the tightening sleeve 10 extends into the fixed seat 200, the rubber core 300 inside the fixed seat 200 can smoothly enter the tightening cavity 11 without any displacement or jamming. The push rod 20, extending into the tightening cavity 11 through the second opening 13 to push out the rubber core 300, offers high convenience. Maintenance personnel do not need to use complex tools; they only need to insert the push rod 20 along the second opening 13 and apply appropriate pressure to easily remove the rubber core 300, facilitating maintenance of the spindle encoder. At the same time, the non-destructive removal method avoids safety hazards such as flying debris and component damage that may occur with destructive disassembly, reducing operational risks.

[0052] In addition, the removal device 100 will not damage the pin 400, the glue core 300 and the fixing seat 200 during the removal of the glue core 300, thereby reducing maintenance costs and equipment downtime losses caused by component damage.

[0053] In one possible implementation, the outer peripheral wall of the top pressure rod 20 is provided with a first external thread 21, and the inner wall of the compression cavity 11 is provided with a first internal thread 111 that mates with the first external thread 21, and the first external thread 21 and the first internal thread 111 are threadedly connected.

[0054] Because the outer peripheral wall of the top pressure rod 20 is provided with a first external thread 21 and the inner wall of the tightening cavity 11 is provided with a corresponding first internal thread 111, the two can form a threaded transmission mechanism. This threaded transmission has the advantages of high efficiency and stability in transmission and high load transmission. In this way, axial movement can be achieved by rotating the top pressure rod 20, avoiding the problem of excessive impact force that may be caused by direct pressure. Moreover, maintenance personnel can achieve its axial movement by rotating the top pressure rod 20, making it easier and more convenient for maintenance personnel to disassemble the rubber core 300.

[0055] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 In some embodiments of this application, the extraction device 100 further includes a clamping member 30, which has a through hole 31 and a second internal thread 311 inside the through hole 31. The second internal thread 311 is adapted to engage with the second external thread of the fixing seat 200. A limiting portion 312 is provided on the inner wall of the through hole 31, and a mating portion 14 is provided on the outer peripheral wall of the tightening sleeve 10. When the second internal thread 311 and the second external thread are in sliding engagement, the outer peripheral wall of the tightening sleeve 10 can abut against the limiting portion 312, so that the tightening sleeve 10 moves with the clamping member 30 along the direction from the first opening 12 to the tightening cavity 11.

[0056] For example, the clamping element 30 can be a clamping nut, which can be hollow and made of hexagonal 45# steel.

[0057] In this embodiment, the second internal thread 311 inside the through hole 31 engages with the second external thread of the fixed base 200. Thus, rotating the clamping member 30 allows for axial movement along the fixed base 200. Furthermore, since a limiting portion 312 is provided on the inner wall of the through hole 31, and a mating portion 14 is provided on the outer peripheral wall of the tightening sleeve 10 to abut against the limiting portion 312, the engagement of the limiting portion 312 and the mating portion 14 effectively limits the tightening sleeve 10. Therefore, when the clamping member 30 is rotated, the helical transmission characteristics of the thread allow the tightening sleeve 10 to move smoothly and precisely along the direction from the first opening 12 to the tightening cavity 11. This effectively avoids the shaking and misalignment problems that may occur when manually operating the tightening sleeve 10, ensuring that the tightening sleeve 10 accurately aligns with the rubber core 300, and that the rubber core 300 is completely and stably inserted into the tightening cavity 11. This reduces the risk of equipment damage due to operational errors.

[0058] Furthermore, by incorporating the clamping element 30, maintenance personnel can simultaneously move the tightening sleeve 10 simply by rotating the clamping element 30, eliminating the need for separate adjustment of the tightening sleeve 10. This simplifies the operation and improves overall work efficiency. In addition, the labor-saving characteristics of threaded drives also reduce the workload of maintenance personnel.

[0059] In one possible structural design, the limiting part 312 includes a first annular protrusion, and the mating part 14 includes a second annular protrusion. Since the annular structure of the protrusion effectively disperses the force, during the removal of the core 300, when the top pressure rod 20 applies an ejection force, the annular protrusion evenly distributes the force around the circumference, avoiding localized stress concentration. This not only protects the tightening sleeve 10 and the clamping member 30 but also extends the service life of the fixing seat 200, reducing maintenance costs due to component damage. Furthermore, the annular protrusion's structural design makes the fit between the tightening sleeve 10 and the clamping member 30 smoother. Because the surface of the annular protrusion is relatively regular, the frictional resistance is low during relative movement, resulting in a smoother feel when the maintenance personnel rotate the clamping member 30, eliminating the need to overcome excessive friction and reducing operational difficulty.

[0060] In another possible structural design, the limiting part 312 includes a first annular protrusion, and the mating part 14 includes a plurality of first protrusions spaced circumferentially along the outer periphery of the tightening sleeve 10, all of which are fixedly connected to the tightening sleeve 10. In yet another possible structural design, the limiting part 312 includes a plurality of second protrusions spaced circumferentially along the inner wall of the through hole 31, and the mating part 14 includes a second annular protrusion. Thus, the limiting part 312 or the mating part 14 requires less material, which helps to reduce the cost of the extraction device 100.

[0061] In some embodiments of this application, an annular relief groove 313 is provided on the inner wall of the through hole 31, and a positioning portion 314 is formed between the annular relief groove 313 and the first annular protrusion to circumferentially engage with the second annular protrusion. The relief groove 313, positioning portion 314, and limiting portion 312 can be arranged in a stepped manner. The positioning portion 314 is adapted to restrict the circumferential freedom of the tightening sleeve 10, preventing the tightening sleeve 10 from being misaligned with the rubber core 300. For example, the hole formed by the limiting portion 312 and the positioning portion 314 is clearance-fitted with the second annular protrusion.

[0062] Since the inner wall of the through hole 31 in this embodiment is provided with a tool relief groove 313, the tool relief groove 313 can facilitate the removal of the tool after the cutting process is completed, reducing the risk of tool collision due to operational errors. In addition, the positioning part 314 can cooperate with the circumferential of the second annular protrusion, so the positioning part 314 can limit the circumferential of the second annular protrusion, preventing the shrink sleeve 10 from being misaligned with the rubber core 300, and reducing the probability of damage to the rubber core 300 during the removal process.

[0063] In one possible implementation, the second internal thread 311, the relief groove 313, the positioning part 314, and the first annular protrusion (i.e., the limiting part 312) are arranged sequentially along the axial direction of the through hole 31.

[0064] In this way, when it is necessary to disassemble the core 300, the shrink sleeve 10 can be inserted into the through hole 31 first, so that the second annular protrusion of the shrink sleeve 10 is located in the through hole 31, and the second annular protrusion is located at the positioning part 314 between the second internal thread 311 and the first annular protrusion. Then, the second internal thread 311 is threadedly connected to the second external thread. By rotating the clamping member 30, the core 300 can be inserted into the shrinking cavity 11 through the first opening 12.

[0065] Furthermore, the axially arranged structure facilitates machining when processing the second internal thread 311, the relief groove 313, the positioning part 314, and the first annular protrusion inside the through hole 31. That is, whether turning or milling, the parts can be processed sequentially along their axial direction, simplifying the machining process and improving efficiency.

[0066] In one possible implementation, the top pressure rod 20 includes a first force-applying part 20A, a threaded connection part 20B, and a top pressure part 20C. The first force-applying part 20A is adapted to apply a rotational force; the threaded connection part 20B is connected to the first force-applying part 20A, and a first external thread 21 is provided on the outer periphery of the threaded connection part 20B; the top pressure part 20C is connected to the side of the threaded connection part 20B opposite to the first force-applying part 20A, and is adapted to abut against the rubber core 300. The first force-applying part 20A, the threaded connection part 20B, and the top pressure part 20C can be coaxially connected, thus facilitating manufacturing.

[0067] The first force-applying part 20A can be shaped to facilitate the transmission of torque. For example, the first force-applying part 20A can be shaped like an external hexagon, an internal hexagon, or a Phillips head, thus making it convenient for maintenance personnel to apply torque.

[0068] In this way, the force-applying part reduces hand fatigue, allowing maintenance personnel to rotate the top pressure rod 20 more easily, improving operational comfort and durability, and thus increasing work efficiency. The threaded connection part 20B engages with the first internal thread 111 on the inner wall of the tightening cavity 11 through the first external thread 21 on its outer periphery, forming a stable transmission structure. When rotating the first force-applying part 20A, the threaded connection part 20B converts the rotational motion into linear motion along the axial direction. The threaded transmission has high precision, and maintenance personnel can accurately control the displacement of the top pressure part 20C by precisely controlling the number of rotations.

[0069] In some embodiments of this application, a receiving groove 20C1 is provided on the side of the pressing part 20C away from the threaded connection part 20B. The receiving groove 20C1 is suitable for accommodating the pin 400 inside the rubber core 300. That is, the pressing part 20C can be designed as a hollow cylinder, so as to effectively prevent the pin 400 in the rubber core 300 from being squeezed.

[0070] In this way, the receiving groove 20C1 provides clearance for the pin 400 within the core 300. During the process of the pressing rod 20 ejecting the core 300, the pin 400 can be completely accommodated within the receiving groove 20C1, avoiding direct contact or compression with the pressing part 20C. It is understandable that for small pins 400 in precision equipment, if pressure is applied directly through the pressing part 20C, the pin 400 may bend or break due to uneven force or collision with hard objects, rendering it unusable. This embodiment of the application, by providing the receiving groove 20C1, ensures that the pin 400 is nearly stress-free throughout the entire removal process, protecting the integrity of the pin 400 and reducing maintenance costs.

[0071] In this embodiment, the receiving groove 20C1 can be coaxially arranged with the top pressure rod 20, thus preventing the pin 400 at the central axis of the core 300 from being squeezed. It is understood that within the core 300, multiple pins 400 (i.e., second pins 400) located at the central axis (i.e., the first pin 400) may be spaced apart circumferentially. Therefore, to prevent the top pressure rod 20 from acting on the second pins 400 on the core 300, in some embodiments, the radial dimension of the top pressure portion 20C is smaller than the radial dimension of the threaded connection portion 20B. This radial dimension of the top pressure portion 20C avoids the second pins 400, thus preventing uneven force on the second pins 400 or bending or breaking due to collisions with hard objects, which would render the pins 400 unusable.

[0072] In one possible structural design, the first force-applying part 20A, the threaded connection part 20B, and the top-pressing part 20C are integrated into a single structure. Because the first force-applying part 20A, the threaded connection part 20B, and the top-pressing part 20C are integrally formed, gaps between the components are eliminated, ensuring their connection strength. During the ejection of the rubber core 300, the top-pressing rod 20 needs to withstand significant axial force and torque. The integrated structure ensures that the force is evenly transmitted along the rod, avoiding operational failures due to loosening or breakage of the connection points. Compared to a spliced ​​structure, the integrated structure eliminates stress concentration problems that may arise from welding, threaded connections, etc., effectively improving the overall strength and fatigue resistance of the top-pressing rod 20.

[0073] Furthermore, the integrated top pressure rod 20 can be manufactured using a single forming process, such as forging, casting, or integral milling on a CNC machining center. Compared to a split structure that requires separate processing of each component before assembly, the integrated structure reduces processing steps and assembly stages, lowering the scrap rate caused by the accumulation of machining accuracy errors from multiple components.

[0074] In another possible structural design, the first force-applying part 20A, the threaded connection part 20B, and the top-pressing part 20C can be connected together by means of threaded connection, welding, snap-fit, bonding, etc. The embodiments of this application do not limit this.

[0075] In one possible implementation, the tightening sleeve 10 includes a tightening cylinder 15, a mating part 14, and a second force-applying part 16 arranged sequentially in the direction from the first opening 12 to the second opening 13, and a tightening cavity 11 is formed inside the tightening cylinder 15.

[0076] The second force-applying part 16 can be shaped to facilitate the transmission of torque. For example, the second force-applying part 16 can be shaped like an external hexagon, internal hexagon, or Phillips head, thus making it convenient for maintenance personnel to apply force to it and preventing the tightening sleeve 10 from rotating along with the clamping member 30. The tightening cylinder 15 can be a thin-walled hollow cylinder, thus making it easier to tighten the rubber core 300 while effectively avoiding the insert pin 400 inside the rubber core 300.

[0077] In this way, when the second internal thread 311 and the second external thread slide together, the limiting part 312 of the tightening sleeve 10 abuts against the mating part 14, and there is friction between them. Therefore, the tightening sleeve 10 may rotate along with the clamping member 30. This would subject the rubber core 300, which abuts against the sleeve, to a certain torque, potentially causing damage to the rubber core 300. This embodiment of the application uses the second force-applying part 16 to facilitate force application by maintenance personnel, preventing the tightening sleeve 10 from rotating along with the clamping member 30. It ensures that when the clamping member 30 rotates axially, the tightening sleeve 10 only moves axially, allowing the rubber core 300 to extend into the tightening cavity 11.

[0078] Although this application has been described herein in conjunction with various embodiments, those skilled in the art, by reviewing the accompanying drawings, the disclosure, and the appended claims, will understand and implement other variations of the disclosed embodiments in carrying out the claimed application. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude multiple instances. A single processor or other unit can implement several functions listed in the claims. While different dependent claims may recite certain measures, this does not mean that these measures cannot be combined to produce good results.

[0079] Although this application has been described in conjunction with specific features and embodiments, it is obvious that various modifications and combinations can be made thereto without departing from the spirit and scope of this application. Accordingly, this specification and drawings are merely exemplary illustrations of this application as defined by the appended claims, and are considered to cover any and all modifications, variations, combinations, or equivalents within the scope of this application. Clearly, those skilled in the art can make various alterations and modifications to this application without departing from the spirit and scope of this application. Thus, if such modifications and modifications of this application fall within the scope of the claims of this application and their equivalents, this application is also intended to include such modifications and modifications.

[0080] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A device for removing a grommet core, characterized by include: A tightening sleeve (10) has a tightening cavity (11) formed inside it, and the tightening sleeve (10) has a first opening (12) and a second opening (13) opposite to each other, the first opening (12) and the second opening (13) communicating with the tightening cavity (11); at least a portion of the tightening sleeve (10) is adapted to extend into the fixing seat (200) so that the rubber core (300) extends into the tightening cavity (11) through the first opening (12); A push rod (20) is adapted to extend into the tightening cavity (11) through the second opening (13) to push out the rubber core (300).

2. The extraction device of claim 1, wherein, The outer peripheral wall of the top pressure rod (20) is provided with a first external thread (21), and the inner wall of the tightening cavity (11) is provided with a first internal thread that mates with the first external thread (21).

3. The extraction device according to claim 1 or 2, characterized in that Also includes: A clamping member (30) is provided with a through hole (31), and a second internal thread (311) is provided in the through hole (31). The second internal thread (311) is adapted to cooperate with the second external thread of the fixing seat (200). The inner wall of the through hole (31) is provided with a limiting part (312), and the outer peripheral wall of the tightening sleeve (10) is provided with a mating part (14). When the second internal thread (311) and the second external thread slide into contact, the outer peripheral wall of the tightening sleeve (10) can abut against the limiting part (312) so that the tightening sleeve (10) moves along the first opening (12) to the tightening cavity (11) along with the pressing member (30).

4. The extraction device according to claim 3, characterized in that, The limiting part (312) includes a first annular protrusion, and the mating part (14) includes a second annular protrusion.

5. The extraction device of claim 4, wherein, An annular relief groove (313) is provided on the inner wall of the through hole (31), and a positioning part (314) for circumferentially engaging with the second annular protrusion is also formed between the annular relief groove (313) and the first annular protrusion.

6. The extraction device of claim 5, wherein, The second internal thread (311), the annular relief groove (313), the positioning part (314), and the first annular protrusion are arranged sequentially along the axial direction of the through hole (31).

7. The extraction device of claim 2, wherein, The top pressure rod (20) includes: The first force-applying part (20A) is adapted to apply rotational force; A threaded connection part (20B) is connected to the first force-applying part (20A), and the outer periphery of the threaded connection part (20B) is provided with the first external thread (21); The pressing part (20C) is connected to the threaded connection part (20B) on the side opposite to the first force-applying part (20A) shown, and is adapted to abut against the rubber core (300).

8. The extraction device of claim 7, wherein, The top pressing part (20C) is provided with a receiving groove (20C1) on the side opposite to the threaded connection part (20B), and the receiving groove (20C1) is adapted to receive the pin (400) in the rubber core (300).

9. The extraction device of claim 7, wherein, The first force-applying part (20A), the threaded connection part (20B), and the top-pressing part (20C) are an integral structure.

10. The extraction device of claim 3, wherein, The shrink sleeve (10) comprises, in sequence from the first opening (12) to the second opening (13), a shrink cylinder (15), a matching part (14) and a second force applying part (16), and the shrink cavity (11) is formed in the shrink cylinder (15).

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