A valve sleeve turning positioning and clamping device

Abstract

The utility model discloses a kind of turning positioning clamping devices for valve sleeve, including chassis, rotary disc, clamping assembly and power component;The rotary disc is concentrically arranged with chassis, and can be relatively rotated;A plurality of positioning grooves in radial distribution are equipped on the chassis, and a plurality of inclined moving grooves are equipped on the rotary disc;The clamping assembly includes a clamping plate, moving shaft is equipped below clamping plate, and arc-shaped inner clamping block and outer clamping block are equipped on the upper end of clamping plate;The moving shaft passes through the moving groove of rotary disc, and is inserted into the positioning groove of chassis;The power component drives rotary disc to rotate, and the moving groove on rotary disc drives moving shaft to move along positioning groove.The utility model utilizes the cooperation of the moving groove on rotary disc and the positioning groove on chassis, realizes that clamping plate can move along two directions of towards center and away from center, to flexibly switch the working state of inner clamping block or outer clamping block, greatly shorten fixture replacement time, improve overall production efficiency.

Description

Technical Field

[0001] This invention relates to the field of valve sleeve processing technology, and in particular to a turning positioning and clamping device for valve sleeves. Background Technology

[0002] A valve sleeve is a material or component used for sealing valves. It is typically made of rubber, plastic, or metal, and its main function is to prevent air, oil, or water leakage, thereby ensuring the normal operation and service life of the valve. As the core load-bearing component of the sealing element, the dimensional accuracy, surface roughness, and geometric tolerances of the valve sleeve's inner and outer walls directly determine the sealing effect.

[0003] In the production and processing of valve sleeves, turning equipment is frequently used to machine the inner and outer sides of the valve sleeve. During turning, fixtures are used to clamp the valve sleeve to facilitate subsequent machining. Because the valve sleeve requires separate control of the inner and outer diameter accuracy and must ensure the coaxiality of the inner and outer walls, the fixtures need to be switched according to the reference requirements during machining. For example, an outer diameter chuck is used for rough turning, while a mandrel is used to support the inner diameter (based on the machined inner diameter) during finish turning. However, the actuators of the chuck and mandrel are not coaxial and cannot be used simultaneously, requiring loosening and reinstallation. This makes the fixture changing process cumbersome and affects machining efficiency. Utility Model Content

[0004] To address the aforementioned issues, this invention provides a valve sleeve turning positioning clamping device, which enables rapid switching between inner and outer diameter clamping for valve seat machining, thereby improving machining efficiency.

[0005] Therefore, the technical solution of this utility model is: a turning positioning and clamping device for valve sleeves, comprising a chassis, a rotating disk, a clamping assembly, and a power assembly; the rotating disk is concentrically arranged with the chassis, and the rotating disk can rotate relative to the chassis; the chassis is provided with a plurality of radially distributed positioning grooves, and the rotating disk is provided with a plurality of inclined moving grooves, and the moving grooves correspond one-to-one with the positioning grooves for cooperative operation; the clamping assembly includes a clamping plate, a moving shaft is provided below the clamping plate, and an arc-shaped inner clamping block and an outer clamping block are provided at the upper end of the clamping plate; the moving shaft passes through the moving groove of the rotating disk and is inserted into the positioning groove of the chassis; the power assembly drives the rotating disk to rotate, and the moving groove on the rotating disk drives the moving shaft to move along the positioning groove, that is, the clamping plate can move in two directions, towards the center and away from the center.

[0006] Based on the above scheme and as a preferred embodiment of the above scheme: the chassis has a protruding mounting post in the middle, and the rotating disk has a ring structure, which is fitted on the mounting post and the two rotate in coordination.

[0007] Based on the above scheme and as a preferred embodiment of the above scheme: a swing arm extends from the side of the rotating disk, and the power component includes a two-way cylinder, the cylinder rod of the two-way cylinder being rotatably connected to the swing arm.

[0008] Based on the above scheme and as a preferred embodiment of the above scheme: the inner clamping blocks of all clamping components are located on the same circumference, and all outer clamping blocks are located on the same circumference.

[0009] Based on the above scheme and as a preferred embodiment of the above scheme: the outer arc surface of the inner clamping block is the inner clamping surface, the inner arc surface of the outer clamping block is the outer clamping surface, and rubber pads are provided on the inner clamping surface and the outer clamping surface.

[0010] Based on the above scheme and as a preferred embodiment of the above scheme: the width of the positioning groove is greater than the width of the moving groove, and the bottom end of the moving shaft is provided with a protruding limiting part, which is placed in the positioning groove and can move along the positioning groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. By utilizing the moving slot on the rotating disk and the positioning slot on the chassis, the clamping plate can move in two directions, towards and away from the center, thereby flexibly switching between the working states of the inner clamping block and the outer clamping block to meet the two clamping requirements of supporting the inner diameter and clamping the outer diameter. This significantly shortens the fixture change time, reduces processing interruptions, and improves overall production efficiency.

[0012] 2. The swing arm is driven by a two-way cylinder to rotate the rotating disk. There is no need for manual adjustment of the clamp position. The rotation of the rotating disk can be controlled by the cylinder alone, thereby realizing the movement of the clamping components and the switching of clamping states. This reduces the intensity and difficulty of manual operation and avoids errors caused by manual adjustment.

[0013] 3. The rotating disk and the chassis are concentrically set, and the moving shaft moves along the radial positioning grooves of the chassis, ensuring that the movement trajectory of the clamping components is always centered on the center of the device. Furthermore, the inner clamping blocks of all clamping components are located on the same circumference, and the outer clamping blocks are also located on the same circumference. This ensures that the valve sleeve is subjected to uniform force and has consistent positioning during clamping, effectively guaranteeing the coaxiality of the inner and outer walls of the valve sleeve after clamping. It eliminates the need for repeated manual calibration of the clamping position, simplifies the operation process, and is suitable for batch processing scenarios.

[0014] 4. The inner diameter is supported by the outer arc surface of the inner clamping block, and the outer diameter is clamped by the inner arc surface of the outer clamping block. Both clamping methods have arc-shaped contact surfaces, which can increase the contact area with the valve sleeve, disperse the clamping force, avoid excessive local pressure that may cause valve sleeve deformation, and ensure clamping stability. In addition, rubber gaskets are set on the contact surfaces, which can not only improve the clamping firmness and prevent the valve sleeve from slipping during processing, but also avoid direct contact between the metal clamping block and the valve sleeve, reduce scratches and indentations on the valve sleeve surface, protect its surface roughness, and ensure the subsequent sealing effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded view of the parts of this utility model; Figure 3 This is a top view of the structure of this utility model; Figure 4 This is a diagram showing the positional relationship between the moving groove and the positioning groove of this utility model; Figure 5 This is a top view of the structure of this utility model when the inner diameter is tightened; Figure 6 for Figure 5 The corresponding positional relationship diagram of the moving slot and the positioning slot; Figure 7 This is a top view of the structure of this utility model in the clamped outer diameter state; Figure 8 for Figure 7 Diagram showing the positional relationship between the corresponding moving slot and positioning slot. The components are marked as follows: chassis 1, mounting column 11, positioning groove 12, rotating disk 2, swing arm 21, moving groove 22, clamping assembly 3, clamping plate 31, moving shaft 32, inner clamping block 33, outer clamping block 34, rubber pad 35, limiting part 36, power assembly 4, two-way cylinder 41, cylinder rod 42, valve sleeve 5. Detailed Implementation

[0016] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0017] Furthermore, 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. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0018] See the attached drawings. The valve sleeve turning positioning and clamping device described in this embodiment includes a chassis 1, a rotating disk 2, a clamping assembly 3, and a power assembly 4.

[0019] The chassis 1 and the rotating disk 2 are concentrically arranged. The chassis 1 has a protruding mounting post 11 in the middle. The rotating disk 2 has a ring structure and is fitted on the mounting post 11. A swing arm 21 extends from the side of the rotating disk 2. The power assembly 4 includes a two-way cylinder 41. The cylinder rod 42 of the two-way cylinder 41 is rotatably connected to the swing arm 21. The cylinder rod 42 can drive the rotating disk 2 to rotate relative to the chassis 1.

[0020] The chassis 1 has multiple radially distributed positioning grooves 12, meaning the positioning grooves 12 radiate outward from the center, and the center line of the positioning grooves 12 lies on a certain diameter. The rotating disk 2 has multiple inclined moving grooves 22, which radiate outward counterclockwise from the center (top view). The number of moving grooves 22 is the same as the positioning grooves 12, and their positions correspond one-to-one. That is, when the moving grooves 22 rotate, there is always an intersection between them and the corresponding positioning grooves 12.

[0021] The clamping assembly 3 includes a clamping plate 31, with a moving shaft 32 located below the clamping plate 31. The upper end of the clamping plate 31 has an arc-shaped inner clamping block 33 and an outer clamping block 34. All inner clamping blocks 33 and all outer clamping blocks 34 of the clamping assembly 3 are located on the same circumference, and the two circumferences are concentric. The outer arc surface of the inner clamping block 33 is the inner clamping surface, and the inner arc surface of the outer clamping block 34 is the outer clamping surface. Rubber gaskets 35 are provided on the inner and outer clamping surfaces. The rubber gaskets 35 increase the clamping firmness and reduce damage to the valve sleeve.

[0022] The movable shaft 32 passes through the movable groove 22 of the rotating disk 2 and is inserted into the positioning groove 12 of the chassis 1, that is, the movable shaft 32 is located at the intersection of the movable groove 22 and the corresponding positioning groove 12. The width of the positioning groove 12 is greater than the width of the movable groove 22. The bottom end of the movable shaft 32 is provided with a protruding limiting part 36, which is placed in the positioning groove 12 and can move along the positioning groove 12. The limiting part 36 can only move along the positioning groove, which can both restrict the movement direction of the movable shaft and prevent the movable shaft from dislodging from the positioning groove, thus ensuring the movement accuracy of the clamping assembly.

[0023] When the bidirectional cylinder 41 drives the rotating disk 2 to rotate, the rotating groove 22 on the rotating disk 2 will drive the moving shaft 32 when it rotates. However, after the moving shaft 32 is limited by the positioning groove 12, it is driven to move along the positioning groove 12, that is, the clamping plate 31 moves in two directions: towards the center and away from the center.

[0024] In the initial state, the moving shaft 32 is positioned at the appropriate position of the moving groove 22 and the positioning groove 12, so that the valve sleeve 5 can be fitted between the inner clamping block 33 and the outer clamping block 34.

[0025] When it is necessary to tighten the valve sleeve 5, the cylinder rod 42 of the bidirectional cylinder 41 drives the rotating disk 2 to rotate clockwise (top view). The moving groove 22 on the rotating disk 2 drives the clamping assembly 3 to move away from the center position, that is, to spread outward, so that the outer arc surface of the inner clamping block 33 abuts against the inner wall of the valve sleeve 5, tightening the valve sleeve 5 from the inside.

[0026] When it is necessary to clamp the valve sleeve 5 from the outside, the cylinder rod 42 of the bidirectional cylinder 41 drives the rotating disk 2 to rotate counterclockwise (top view). The moving groove 22 on the rotating disk 2 drives the clamping assembly 3 to move toward the center position, that is, to retract inward, so that the inner arc surface of the outer clamping block 34 abuts against the outer wall of the valve sleeve 5, thus clamping the valve sleeve 5 from the outside.

[0027] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A turning positioning and clamping device for valve sleeves, characterized in that: The system includes a chassis, a rotating disk, a clamping assembly, and a power assembly. The rotating disk is concentrically arranged with the chassis and can rotate relative to the chassis. The chassis has multiple radially distributed positioning slots, and the rotating disk has multiple inclined moving slots, with each moving slot corresponding to a positioning slot for coordinated operation. The clamping assembly includes a clamping plate with a moving shaft below it. The upper end of the clamping plate has an arc-shaped inner clamping block and an outer clamping block. The moving shaft passes through the moving slot of the rotating disk and inserts into the positioning slot of the chassis. The power assembly drives the rotating disk to rotate, and the moving slot on the rotating disk drives the moving shaft to move along the positioning slot, meaning the clamping plate can move in two directions: towards and away from the center.

2. The valve sleeve turning positioning clamping device as described in claim 1, characterized in that: The chassis has a protruding mounting post in the middle, and the rotating disk has a ring structure, which is fitted onto the mounting post and the two rotate in coordination.

3. The valve sleeve turning positioning and clamping device as described in claim 1, characterized in that: A swing arm extends from the side of the rotary disk, and the power assembly includes a two-way cylinder, the cylinder rod of which is rotatably connected to the swing arm.

4. The valve sleeve turning positioning clamping device as described in claim 1, characterized in that: All the inner clamping blocks of all clamping components are located on the same circumference, and all the outer clamping blocks are located on the same circumference.

5. The valve sleeve turning positioning clamping device as described in claim 1, characterized in that: The outer arc surface of the inner clamping block is the inner clamping surface, and the inner arc surface of the outer clamping block is the outer clamping surface. Rubber pads are provided on the inner and outer clamping surfaces.

6. The valve sleeve turning positioning and clamping device as described in claim 1, characterized in that: The width of the positioning groove is greater than the width of the moving groove. The bottom end of the moving shaft is provided with a protruding limiting part, which is placed in the positioning groove and can move along the positioning groove.

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