Anti-shielding processing and polishing mechanism for valve core of stop valve

Abstract

The application discloses a kind of anti-shielding type processing grinding mechanism of stop valve core, it is related to intelligent manufacturing equipment industry field, and the middle end of base body is equipped with driving motor, the output end of driving motor is engaged with meshing conveyor belt, and meshing conveyor belt is arranged in the inside of base body;The inside of base body is rotatably connected with docking activity disc, and the lower end of docking activity disc is engaged with meshing conveyor belt between docking activity disc.The anti-shielding type processing grinding mechanism of stop valve core is provided with locking wrapping type grinding mechanism, valve core rod body and elastic polishing belt keep sustained contact, polishing belt assembly is adaptively attached to the circular arc surface of valve core rod body under contact pressure, realize uniform wrapping type surface treatment, the elastic deformation of flexible polishing belt assembly is realized to the conformal attachment of valve core rod body surface, effectively avoid the local overgrinding or missing grinding caused by rigid tool, improve the consistency of valve core rod body surface roughness and the uniformity of contour accuracy.

Description

Technical Field

[0001] This invention relates to the field of intelligent manufacturing equipment technology, specifically to an anti-shielding processing and grinding mechanism for a stop valve core. Background Technology

[0002] The intelligent manufacturing equipment industry is a key development direction of my country's high-end equipment manufacturing industry. It is widely used in automobile manufacturing, new energy, consumer electronics, high-end equipment and other fields. As one of the most widely used shut-off valves in industrial pipeline systems, the valve core sealing surface of the gate valve directly determines the valve's sealing performance and service life. It is a key process that affects the quality of high-end valve products. For example, the patent with announcement number CN216098068U describes a valve core sealing surface grinding device, which is used to grind the sealing surface of a stepped columnar valve core. It includes a grinding component, a fixing component, and a driving component. The fixing component is detachably connected to the valve core and is used to push the grinding component against the sealing surface. The driving component is connected to the grinding component and the fixing component and is used to drive the grinding component to rotate around the axis of the valve core. For example, patent CN109834546B describes a valve core grinding machine, which belongs to the field of grinding devices. It includes: a grinding disc; a drive mechanism, comprising a motor, a drive rod, and a drive disk for driving the drive rod to periodically swing; the middle part of the drive rod is hinged to the grinding disc; the motor drives the drive disk; a groove is provided on the drive rod; a track, which is figure-eight shaped; and a clamping block for holding the valve core, with a vertical rod provided on the clamping block, the vertical rod located within the groove; when the drive rod swings, it drives the drive rod to move along the track. For example, the patent with publication number CN114603431A discloses a hydraulic valve core grinding device, which includes a power shaft. A drive wheel is fixedly connected to the outside of the power shaft. A rack belt I meshes with the outside of the drive wheel. A driven wheel meshes with the other end of the rack belt I. A fixed rod is movably connected to the middle of the driven wheel. A rack belt II located above the rack belt I meshes with the outside of the driven wheel. By dividing the movement path of the slider into two mutually perpendicular movements, the fixed slider connected by the rack belt IV drives the movable rod to move in the vertical direction. Most of the aforementioned existing technologies improve the overall structure. However, existing grinding mechanisms often use rigid belt wheels or grinding wheels as grinding tools during operation, resulting in a fixed grinding surface shape. This makes it impossible for the grinding surface to adapt to the curved surface of the valve core, which can easily lead to excessive or insufficient grinding of certain curved areas, affecting surface uniformity. Furthermore, in existing operations, the valve core is mostly in a static clamping state during grinding, making it impossible to automatically adjust the workpiece angle according to the grinding progress. This makes it difficult to achieve full coverage grinding of the circumferential surface of the valve core without dead angles, thus limiting its application. Summary of the Invention

[0003] The purpose of this invention is to provide an anti-obstruction grinding mechanism for the valve core of a shut-off valve, in order to solve the problems mentioned in the background art, which mostly use rigid abrasive belt wheels or grinding wheels as grinding tools. The grinding surface shape is fixed and cannot adaptively fit the arc surface of the valve core rod, which easily causes excessive or incomplete grinding of the curved surface, affecting the surface uniformity. In addition, in the existing operation, the valve core is mostly in a static clamping state during grinding, and it is impossible to automatically adjust the workpiece angle according to the grinding progress during the grinding process, making it difficult to achieve full coverage grinding of the circumferential surface of the valve core rod without dead angles.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an anti-shielding processing and grinding mechanism for a shut-off valve core, comprising a base, an elastic grinding belt assembly connected to the outer side of the base via a transmission component, and a drive motor installed at the middle of the base, the output end of the drive motor engaging with a meshing conveyor belt, the meshing conveyor belt being disposed on the inner side of the base; a docking movable disc rotatably connected inside the base, the lower end of the docking movable disc engaging with the meshing conveyor belt; an internal guide component nested on the surface of the base, and a bearing docking component nested inside the internal guide component, the surface of the bearing docking component bearing the valve core rod to be processed; a locking and wrapping grinding mechanism is provided between the bearing docking component and the base, and the valve core rod is subjected to multi-directional locking grinding operation through the locking and wrapping grinding mechanism.

[0005] Furthermore, the locking and enveloping grinding mechanism is provided with a transmission link, which is rotatably connected to the outside of the docking movable disc, and the end of the transmission link is rotatably connected to the built-in guide. An abutting piston is nested inside the base.

[0006] Furthermore, the outer side of the abutting piston component is connected to a built-in nested liquid bladder assembly, and the built-in nested liquid bladder assembly is disposed in a preset cavity inside the matrix. The outer side of the abutting piston component corresponds to the lower outer side of the built-in guide component.

[0007] Furthermore, the surface of the bearing docking member is docked with a transverse corrugated liquid bladder assembly, and a limit baffle docking member is provided on the outer side of the transverse corrugated liquid bladder assembly. The lower end of the transverse corrugated liquid bladder assembly is docked with a supply hose, and the supply hose is arranged to pass through the middle of the built-in guide and the bearing docking member. The end of the supply hose is connected to the built-in nested liquid bladder assembly.

[0008] Furthermore, the docking movable disc drives the built-in guide to form a transmission structure through the transmission link, and when the lower end of the built-in guide moves to contact the contacting piston, the contacting piston simultaneously applies pressure to the contacting built-in nested liquid bladder assembly.

[0009] Furthermore, the built-in nested liquid bladder assembly supplies power to the interior of the transversely corrugated liquid bladder assembly via a supply hose, and the transversely corrugated liquid bladder assembly expands laterally, pushing the outer limiting baffle docking piece to displace.

[0010] Furthermore, a one-way rotating structure is provided between the built-in guide and the bearing docking component. This one-way rotating structure performs a mechanical, uniform circumferential grinding operation on the supported workpiece. The one-way rotating structure is equipped with a docking rack, which is fixed to the surface of the base. The inner wall of the bearing docking component is rotatably docked with a docking tooth block, and a return spring is fixedly connected to the inner side of the docking tooth block. The return spring is docked with the inner side of the bearing docking component. Furthermore, the mating teeth are elastically rotated along the interior of the bearing mating member by means of a return spring, and the mating teeth are distributed at equal angles about the center point of the bearing mating member.

[0011] Furthermore, the bearing docking component forms an engagement structure with the docking tooth block and the docking tooth rack.

[0012] Compared with the prior art, the beneficial effects of the present invention are: The anti-shielding grinding mechanism of this shut-off valve core is equipped with a locking and wrapping grinding mechanism. The locking and wrapping grinding mechanism performs multi-directional grinding operations on the valve core rod through locking. The whole uses a high-speed transmission flexible material grinding belt assembly connected by a preset drive device as the grinding tool. The docking movable disc drives the built-in guide to reciprocate along the surface of the base through the transmission linkage. In turn, the built-in guide drives the upper limit valve core rod workpiece bearing docking part to move back and forth synchronously to contact the outside of the grinding belt assembly, so that the valve core rod body and the elastic grinding belt maintain continuous contact. Under the contact pressure, the grinding belt assembly adaptively fits the arc surface of the valve core rod body to achieve uniform wrapping surface treatment. The elastic deformation of the flexible grinding belt assembly achieves conformal fitting to the curved surface of the valve core rod body, effectively avoiding local over-grinding or under-grinding caused by rigid tools, improving the consistency of the surface roughness and the uniformity of the contour accuracy of the valve core rod body, and improving the processing efficiency of the equipment. Furthermore, during the reciprocating motion of the built-in guide and bearing docking parts carrying the workpiece along the base surface in conjunction with the transmission linkage, the bottom of the built-in guide applies pressure to the reciprocating and contacting piston parts, allowing the contacting piston parts to synchronously squeeze the contacting built-in nested liquid bladder assembly. The built-in nested liquid bladder assembly will synchronously supply the transverse corrugated liquid bladder assembly through the supply hose, thereby causing it to laterally push the limiting baffle docking part to adaptively center and limit its position, and implement self-locking of the valve core. That is, the bearing docking part adaptively completes the locking process when it approaches the grinding belt assembly, and automatically unlocks as the bearing docking part disengages from the grinding belt assembly after grinding. This simplifies the operation steps and improves processing efficiency and safety. Furthermore, a unidirectional rotating structure is provided. This structure performs a mechanical, uniform circumferential grinding operation on the workpiece. During the grinding process, the bearing docking component, equipped with a docking tooth block structure, retracts normally when near the grinding belt. After grinding and resetting, the docking tooth block contacts the docking rack and moves at an angle, thereby driving the bearing docking component carrying the valve core rod to rotate at an adaptive angle along the upper end of the built-in guide to complete the uniform circumferential rotation of the valve core rod. This allows the valve core rod to automatically rotate a certain angle after each grinding stroke, achieving full coverage grinding of the entire circumference of the valve core rod. This avoids grinding blind spots caused by a fixed workpiece, ensuring the integrity and consistency of the valve core's outer surface treatment and improving the practicality of the device. Furthermore, the end clamping position of the bearing docking component is lower than the end face of the valve core to be ground. During the process of the bearing docking component reciprocating towards the grinding belt assembly, the grinding belt assembly directly contacts the end face of the valve core for grinding. The end of the limiting baffle docking component avoids the movement trajectory of the grinding belt assembly and will not block the grinding path of the grinding belt assembly on the end face of the valve core. This avoids the phenomenon of insufficient grinding or missed grinding of the end face due to obstruction, ensuring the integrity and consistency of the roughness and contour accuracy of the valve core end face sealing surface, and effectively improving the processing quality and sealing reliability of the valve core end face sealing surface. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the half-section three-dimensional structure of the present invention; Figure 3 For the present invention Figure 2 A magnified schematic diagram of the central part of the structure; Figure 4 This is a schematic diagram of the three-dimensional structure of the bearing docking component of the present invention in half section. Figure 5 This is a three-dimensional structural diagram of the built-in nested liquid bladder assembly of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the rack and pinion of the present invention; Figure 7 This is a three-dimensional structural diagram of the transmission linkage of the present invention; Figure 8 This is a schematic diagram of the half-section three-dimensional structure of the built-in guide component of the present invention; Figure 9 This is a three-dimensional structural diagram of the limiting baffle docking component of the present invention.

[0014] In the diagram: 1. Matrix; 2. Grinding belt assembly; 3. Drive motor; 4. Engaging conveyor belt; 5. Dating movable disc; 6. Transmission connecting rod; 7. Built-in guide; 8. Bearing docking component; 9. Dating rack; 10. Abutting piston component; 11. Built-in nested liquid bladder assembly; 12. Supply hose; 13. Lateral corrugated liquid bladder assembly; 14. Limiting baffle docking component; 15. Dating tooth block; 16. Return spring. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] Example 1: Please refer to Figures 1-9 The present invention provides the following technical solution: a shielding processing and grinding mechanism for a stop valve core. To solve the problem that rigid abrasive belt wheels or grinding wheels are often used as grinding tools, the grinding surface shape is fixed and cannot adapt to the arc surface of the valve core rod, which easily causes excessive or incomplete grinding of the curved surface, affecting the surface uniformity. Moreover, in the existing operation, the valve core is mostly in a static clamping state during grinding, and it is impossible to automatically adjust the workpiece angle according to the grinding progress during the grinding process, making it difficult to achieve full coverage grinding of the circumferential surface of the valve core rod without dead angles. The present invention discloses a mechanism including: a grinding belt assembly 2 of elastic material connected to the outer side of the base 1 through a transmission component, and a drive motor 3 installed in the middle of the base 1. The output end of the drive motor 3 is engaged with a meshing conveyor belt 4, and the meshing conveyor belt 4 is set on the inner side of the base 1. The base 1 is internally connected to a rotating docking disc 5, and the lower end of the docking disc 5 engages with the meshing conveyor belt 4. An internal guide 7 is nested on the surface of the base 1, and a bearing docking component 8 is nested inside the internal guide 7. The bearing docking component 8 can rotate freely relative to the internal guide 7 around its own vertical axis, and its surface supports the valve core rod to be processed. A locking, enveloping grinding mechanism is provided between the bearing docking component 8 and the base 1. This mechanism performs multi-directional locking grinding on the transmitted valve core rod. The locking, enveloping grinding mechanism includes a transmission link 6, which rotatably engages with the outside of the docking disc 5, and the end of the transmission link 6 is connected to the internal guide 7. A rotating connection is made, with a contact piston 10 nested inside the base 1, and an internal nested liquid bladder assembly 11 docked to the outside of the contact piston 10. The internal nested liquid bladder assembly 11 is located in a pre-set cavity inside the base 1. The outer side of the contact piston 10 corresponds to the lower outer side of the internal guide 7. A transverse corrugated liquid bladder assembly 13 is docked to the surface of the bearing docking member 8, and a limit baffle docking member 14 is provided on the outer side of the transverse corrugated liquid bladder assembly 13. A supply hose 12 is docked to the lower end of the transverse corrugated liquid bladder assembly 13, and the supply hose 12 is installed through the middle of the internal guide 7 and the bearing docking member 8. The end of the supply hose 12 is connected to the internal nested liquid bladder assembly 11. The docking movable plate 5 is connected via a transmission... The moving connecting rod 6 drives the built-in guide 7 to reciprocate along the surface of the base 1, thereby causing the built-in guide 7 to synchronously move the bearing docking part 8 of the upper limit valve core rod workpiece back and forth until it comes into contact with the outside of the grinding belt assembly 2. This ensures that the valve core rod body maintains continuous contact with the elastic grinding belt. Under contact pressure, the grinding belt assembly 2 adaptively conforms to the arc surface of the valve core rod body, achieving uniform wrapping surface treatment. The elastic deformation of the flexible grinding belt assembly 2 achieves conformal fitting to the curved surface of the valve core rod body, effectively avoiding local over-grinding or under-grinding caused by rigid tools, and improving the consistency of the surface roughness and the uniformity of the contour accuracy of the valve core rod body. The grinding belt assembly 2 is an annular abrasive belt composed of a flexible substrate and an abrasive layer. Its flexible substrate, under the pressure of the valve core rod, conforms to the arc surface of the valve core rod body. When radial pressure is applied to the core rod, local elastic bending deformation occurs, naturally wrapping and fitting along the arc surface of the valve core rod. The contact arc length increases with the increase of contact pressure, thereby achieving adaptive wrapping grinding of the valve core rod surface. During the reciprocating movement of the built-in guide 7 and the bearing docking part 8 along the surface of the base 1 in conjunction with the transmission connecting rod 6, the bottom of the built-in guide 7 applies pressure to the reciprocating and contacting piston part 10, allowing the contacting piston part 10 to synchronously squeeze the contacting built-in nested liquid bladder assembly 11. The built-in nested liquid bladder assembly 11 is synchronously supplied to the interior of the transverse corrugated liquid bladder assembly 13 through the supply hose 12, thereby causing it to laterally push the limiting baffle docking part 14 to adaptively center and limit its position, thus implementing self-locking of the valve core.That is, the bearing docking part 8 automatically locks itself as it approaches the grinding belt assembly 2, and unlocks itself after grinding is completed as the bearing docking part 8 disengages from the grinding belt assembly 2.

[0017] Example 2: Based on Example 1, a unidirectional rotation structure is also disclosed, the specific structure of which is as follows: A one-way rotating structure is provided between the built-in guide component 7 and the bearing docking component 8. The bearing workpiece is mechanically and uniformly polished by the one-way rotating structure. The unidirectional rotating structure is equipped with a docking rack 9, which is fixed to the surface of the base 1. The inner wall of the bearing docking member 8 is rotatably docked with docking tooth blocks 15, and a return spring 16 is fixedly connected to the inner side of the docking tooth blocks 15. The return spring 16 and the inner side of the bearing docking member 8 are mutually docked. The docking tooth blocks 15 form an elastic rotating structure along the interior of the bearing docking member 8 through the return spring 16, and the docking tooth blocks 15 are evenly distributed about the center point of the bearing docking member 8. The bearing docking member 8 cooperates with the docking tooth blocks 15 to... A meshing structure is formed between the mating racks 9. During the process of the bearing mating piece 8 reciprocatingly contacting the workpiece with the grinding belt assembly 2, driven by the built-in guide 7, when the bearing mating piece 8 moves closer to the grinding belt assembly 2, the inclined side of the mating tooth block 15 contacts the tooth surface of the mating rack 9, and is pressed into the interior of the bearing mating piece 8 under the guidance of the inclined surface, without generating rotational drive; when the bearing mating piece 8 moves away from the grinding belt assembly 2 to reset, the vertical side of the mating tooth block 15 engages with the tooth surface of the mating rack 9, and is controlled by the reset spring. Under the action of 16, the workpiece remains engaged, causing the bearing docking part 8 to rotate relative to the built-in guide part 7 by a tooth pitch angle. This achieves unidirectional step rotation of the workpiece, thereby driving the bearing docking part 8, which carries the valve core rod, to rotate adaptively along the upper end of the built-in guide part 7, completing the circumferential uniform rotation of the valve core rod. This allows the valve core rod to automatically rotate a certain angle after each grinding stroke, achieving full coverage grinding of the entire circumference of the valve core rod surface. This avoids grinding blind spots caused by a fixed workpiece and ensures the surface treatment of the valve core's outer diameter. To ensure the integrity and consistency of the valve core, the end clamping position of the bearing docking part 8 is lower than the end face of the valve core to be ground. During the process of the bearing docking part 8 reciprocating towards the grinding belt assembly 2, the grinding belt assembly 2 directly contacts the end face of the valve core for grinding. The end of the limiting baffle docking part 14 avoids the movement trajectory of the grinding belt assembly 2 and will not block the grinding path of the grinding belt assembly 2 on the end face of the valve core. This avoids the phenomenon of insufficient grinding or missed grinding of the end face due to obstruction, and ensures the integrity and consistency of the roughness and contour accuracy of the sealing surface of the valve core end face.

[0018] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0019] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A shielding processing and grinding mechanism for a stop valve core, comprising a base (1), wherein an elastic grinding belt assembly (2) is connected to the outer side of the base (1) via a transmission assembly, and a drive motor (3) is installed at the middle end of the base (1), wherein the output end of the drive motor (3) is engaged with a meshing conveyor belt (4), and the meshing conveyor belt (4) is disposed on the inner side of the base (1); characterized in that The base (1) is rotatably connected to a docking movable disk (5), and the lower end of the docking movable disk (5) is engaged with the meshing conveyor belt (4). The surface of the base (1) is nested with an internal guide (7), and the inner side of the internal guide (7) is nested with a bearing docking part (8). The surface of the bearing docking part (8) carries the valve core rod to be processed. A locking wrapping grinding mechanism is provided between the bearing docking part (8) and the base (1). The valve core rod is locked and multi-directionally ground by the locking wrapping grinding mechanism.

2. The anti-shielding machining and grinding mechanism for a stop valve core according to claim 1, characterized in that: The locking and enveloping grinding mechanism is provided with a transmission link (6), and the transmission link (6) is rotatably connected to the outside of the docking movable disk (5), and the end of the transmission link (6) is rotatably connected to the built-in guide (7). The inner side of the base (1) is nested with an abutting piston (10).

3. The anti-shielding machining and grinding mechanism for a stop valve core according to claim 2, characterized in that: The outer side of the abutting piston (10) is connected to the built-in nested liquid bladder assembly (11), and the built-in nested liquid bladder assembly (11) is disposed in a preset cavity inside the base (1). The outer side of the abutting piston (10) corresponds to the lower outer side of the built-in guide (7).

4. The anti-shielding machining and grinding mechanism for a stop valve core according to claim 3, characterized in that: The surface of the bearing docking part (8) is docked with a transverse corrugated liquid bladder assembly (13), and a limit baffle docking part (14) is provided on the outside of the transverse corrugated liquid bladder assembly (13). The lower end of the transverse corrugated liquid bladder assembly (13) is docked with a supply hose (12), and the supply hose (12) is installed through the middle of the built-in guide (7) and the bearing docking part (8). The end of the supply hose (12) is connected to the built-in nested liquid bladder assembly (11).

5. The anti-shielding machining and grinding mechanism for a stop valve core according to claim 4, characterized in that: The docking movable disk (5) drives the built-in guide (7) to form a transmission structure through the transmission link (6). When the lower end of the built-in guide (7) moves to contact the contact piston (10), the contact piston (10) simultaneously applies pressure to the contacting built-in nested liquid bladder assembly (11).

6. The anti-shielding machining and grinding mechanism for a stop valve core according to claim 5, characterized in that: The built-in nested liquid bladder assembly (11) supplies the liquid bladder assembly (13) to the interior through the supply hose (12), and the transverse corrugated liquid bladder assembly (13) expands laterally to push the outer limiting baffle docking piece (14) to form a displacement.

7. The anti-shielding machining and grinding mechanism for a stop valve core according to claim 6, characterized in that: A one-way rotating structure is provided between the built-in guide (7) and the bearing docking part (8), and the bearing workpiece is mechanically and uniformly polished by the one-way rotating structure. The unidirectional rotating structure is provided with a docking rack (9), and the docking rack (9) is fixed on the surface of the base (1). The inner wall of the bearing docking member (8) is rotatably docked with a docking tooth block (15), and a return spring (16) is fixedly connected to the inner side of the docking tooth block (15), and the return spring (16) is docked with the inner side of the bearing docking member (8).

8. The anti-shielding machining and grinding mechanism for a stop valve core according to claim 7, characterized in that: The docking tooth block (15) forms an elastic rotation structure along the interior of the bearing docking member (8) by means of a return spring (16), and the docking tooth block (15) is distributed at equal angles with respect to the center point of the bearing docking member (8).

9. The anti-shielding machining and grinding mechanism for a stop valve core according to claim 8, characterized in that: The bearing docking component (8) forms an engagement structure with the docking tooth block (15) and the docking tooth rack (9).

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