Clamping device for valve machining

Abstract

The utility model relates to a clamping device for valve machining. Comprising a main support, a lifting installation base capable of moving in a lifting mode is installed on the main support, a clamping jaw sleeve is fixedly connected to the lifting installation base, two sets of hook-shaped inner clamping jaws which are distributed in a crossed mode are arranged in the clamping jaw sleeve in a penetrating mode, and an inner clamping driving assembly is installed on the lifting installation base and used for driving the two sets of inner clamping jaws to contract or stretch. The lifting assembly is used for driving the lifting mounting seat to move up and down; a bearing top plate is installed on the top of the main support, a through groove corresponding to the clamping jaw sleeve is formed in the bearing top plate, and a plurality of sets of supporting cushion blocks distributed on the periphery of the through groove are installed on the top face of the bearing top plate. The clamping device further comprises multiple sets of outer clamping assemblies installed on the main support and used for pressing the outer clamping assemblies on the multiple sets of supporting cushion blocks. According to the valve body clamping device, clamping operation can be conducted on the exterior and the interior of a valve body at the same time, the valve body is prevented from rotating during machining, and then the machining accuracy of the valve body is improved.

Description

Technical Field

[0001] This utility model belongs to the field of valve processing technology, and in particular relates to a clamping device for valve processing. Background Technology

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and regulate and control the parameters of the conveyed medium. Based on their function, they can be classified into shut-off valves, check valves, and regulating valves, among others. Valves used in fluid control systems have various structures and functions, ranging from the simplest shut-off valves to the various valves used in extremely complex automated control systems; their types and specifications are quite numerous.

[0003] Existing valve bodies are typically made of casting, forging, or welded steel plates, and their complex shapes and dimensions require precision machining on lathes or milling machines. During machining, to ensure the stability and accuracy of the valve body, specialized fixtures are used to clamp the workpiece to prevent misalignment or vibration during processing.

[0004] Current clamping devices primarily rely on external clamping of valve bodies. This single method of fixation easily leads to unnecessary rotation of the valve body during machining, severely impacting machining accuracy and final quality. Therefore, there is an urgent need to design a clamping device for valve machining to solve these problems. Utility Model Content

[0005] This invention provides a clamping device for valve processing with a reasonable structural design to solve the technical problems existing in the prior art. This invention can perform clamping operations simultaneously on the outside and inside of the valve body, preventing the valve body from rotating during processing and thus improving the accuracy of valve body processing.

[0006] The technical solution adopted by this utility model to solve the technical problems existing in the prior art is as follows: A clamping device for valve processing includes a main support, a lifting and movable mounting seat is installed on the main support, a jaw sleeve is fixedly connected to the lifting mounting seat, two sets of inner clamping jaws are arranged in a cross-shaped and hook-like manner inside the jaw sleeve, an inner clamping drive assembly is installed on the lifting mounting seat for driving the two sets of inner clamping jaws to retract or open; it also includes a lifting assembly for driving the lifting mounting seat to move up and down; a supporting top plate is installed on the top of the main support, a through groove corresponding to the jaw sleeve is opened on the supporting top plate, and multiple sets of support pads are installed on the top surface of the supporting top plate around the through groove; it also includes multiple sets of outer clamping assemblies installed on the main support for pressing the outer clamping assemblies onto the multiple sets of support pads.

[0007] The advantages and positive effects of this utility model are as follows: This utility model provides a clamping device for valve processing. By setting two sets of inner clamping jaws and an inner clamping drive assembly for driving the two sets of inner clamping jaws, the inner wall of the valve body can be clamped. By setting a lifting assembly, the lifting mounting seat can be driven to move up and down, thereby driving the two sets of inner clamping jaws and the inner clamping drive assembly to move up and down synchronously, realizing the height adjustment of the clamping position of the two sets of inner clamping jaws, further improving the clamping stability of the two sets of inner clamping jaws on the inner wall of the valve body. By setting multiple sets of external clamping assemblies, the external clamping and positioning of the valve body can be realized. This utility model can perform clamping operations on the outside and inside of the valve body simultaneously, preventing the valve body from rotating during processing, thereby improving the accuracy of valve body processing.

[0008] Preferably, it also includes multiple sets of positioning pins that can be detachably installed on the lifting mounting base, and through holes corresponding to the multiple sets of positioning pins are opened on the supporting top plate.

[0009] Preferably, the inner clamping drive assembly includes a drive mounting sleeve fixedly connected to the bottom surface of the lifting mounting base, with a mounting through groove in the middle of the drive mounting sleeve; it also includes an inner drive cylinder fixedly connected to the bottom of the drive mounting sleeve, the piston rod of the inner drive cylinder passing through the mounting through groove and having a hinge joint installed thereon, the hinge joint being pivotally connected to the lower ends of two sets of inner clamping claws via a pin; it also includes a horizontally arranged sliding pin installed on the upper part of the drive mounting sleeve and passing through the mounting through groove; each inner clamping claw has a bent sliding groove, and the sliding pin slides through the sliding groove.

[0010] Preferably, a guide sleeve is installed in the mounting slot opened in the middle of the drive mounting sleeve, and the guide sleeve is located below the sliding pin; the hinge joint slides through the guide sleeve.

[0011] Preferably, the lifting assembly includes a cylinder mounting bracket fixed to the main support, a lifting cylinder fixed to the cylinder mounting bracket, a cylinder connector installed at the extended end of the lifting cylinder, and the cylinder connector snapping into an opening slot at the end of the lifting mounting seat.

[0012] Preferably, a longitudinally arranged lifting guide rail is fixedly connected to the main support, and a slider that slides with the lifting guide rail is fixedly connected to the drive mounting sleeve.

[0013] Preferably, the external clamping assembly includes a longitudinally arranged external clamping cylinder fixed to the main support, a hinge seat fixed to the top of the cylinder barrel of the external clamping cylinder, a pressing member pivotally connected to the extended end of the external clamping cylinder, and a flipping connecting plate pivotally connected between the middle of the pressing member and the hinge seat. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This is a three-dimensional structural diagram of the main body of this utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the main body of this utility model;

[0017] Figure 4 This is a schematic diagram of the internal structure of the inner clamping drive component in this utility model;

[0018] Figure 5 This is a three-dimensional structural diagram of the external clamping component in this utility model.

[0019] In the diagram: 1. Main support; 2. Inner clamp drive assembly; 2-1. Drive mounting sleeve; 2-2. Inner drive cylinder; 2-3. Lifting guide rail; 2-4. Hinge joint; 2-5. Sliding pin; 3. Lifting assembly; 3-1. Lifting cylinder; 3-2. Cylinder mounting bracket; 3-3. Cylinder joint; 4. Lifting mounting seat; 5. Positioning pin; 6. Top plate support; 7. Support pad; 8. Inner clamping claw; 8-1. Slide groove; 9. Outer clamping assembly; 9-1. Outer clamping cylinder; 9-2. Flipping connecting plate; 9-3. Pressing component; 10. Claw sleeve. Detailed Implementation

[0020] To further understand the invention content, features, and effects of this utility model, the following embodiments are provided in detail:

[0021] See Figure 1 The clamping device for valve processing of this utility model includes a main support 1, on which a movable lifting mounting base 4 is mounted. A gripper sleeve 10 is fixedly connected to the lifting mounting base 4. In this embodiment, the gripper sleeve 10 is installed in the middle of the lifting mounting base 4. The inner cavity of the gripper sleeve 10 has a rectangular cross-section. Two sets of intersecting and hook-shaped inner clamping claws 8 are inserted into the gripper sleeve 10. In actual operation, the two sets of inner clamping claws 8 are inserted into the rectangular inner cavity of the gripper sleeve 10 and limit its movement. In addition, the outer contour of the gripper sleeve 10 needs to be smaller than the inner diameter of the valve to be processed, so as to facilitate the insertion of the gripper sleeve 10.

[0022] An inner clamping drive assembly 2 is installed on the lifting mounting base 4 to drive the two sets of inner clamping claws 8 to retract or open.

[0023] See further Figure 3 and Figure 4The aforementioned inner clamping drive assembly 2 includes a drive mounting sleeve 2-1 fixedly attached to the bottom surface of the lifting mounting base 4. A mounting slot is provided in the middle of the drive mounting sleeve 2-1. It also includes an inner drive cylinder 2-2 fixedly attached to the bottom of the drive mounting sleeve 2-1. The piston rod of the inner drive cylinder 2-2 passes through the mounting slot and is fitted with a hinge joint 2-4. In this embodiment, the hinge joint 2-4 is a Y-type joint. The hinge joint 2-4 is pivotally connected to the lower ends of the two sets of inner clamping claws 8 via a pin. Furthermore, a guide sleeve is installed in the mounting slot in the middle of the drive mounting sleeve 2-1. The guide sleeve is located below the sliding pin 2-5; the hinge joint 2-4 slides through the guide sleeve.

[0024] The inner clamping drive assembly 2 also includes a horizontally arranged sliding pin 2-5 installed on the upper part of the drive mounting sleeve 2-1 and passing through the mounting slot; each inner clamping claw 8 has a bent sliding groove 8-1, and the sliding pin 2-5 slides through the sliding groove 8-1. The sliding groove 8-1 includes a vertical section and an inclined section.

[0025] In actual operation, the extension and retraction of the piston rod of the internal drive cylinder 2-2 can drive the hinge joint 2-4 to move up and down, thereby causing the two sets of internal clamping claws 8 mentioned above to open or retract synchronously.

[0026] This embodiment also includes multiple sets of positioning pins 5 that can be detachably installed on the lifting mounting base 4. The multiple sets of positioning pins 5 are adapted to the mounting holes on the valve to be processed. By setting the above-mentioned multiple sets of positioning pins 5, the valve can be further positioned, and the valve can also be further prevented from rotating during processing.

[0027] like Figure 1 and Figure 2 As shown, a supporting top plate 6 is installed on the top of the main support 1. The supporting top plate 6 has through slots corresponding to the gripper sleeve 10. Additionally, the supporting top plate 6 has through holes corresponding to multiple sets of positioning pins 5. Multiple sets of support pads 7, distributed around the through slots, are installed on the top surface of the supporting top plate 6 to support the valve component to be processed. To further improve the positioning of the valve body to be processed by this device, in this embodiment, the aforementioned support pads 7 can adopt a magnetic attraction principle. That is, the support pads 7 include a magnet mounting base installed on the supporting top plate 6, and a magnet for magnetically attracting the valve body to be processed is installed on the magnet mounting base.

[0028] This embodiment also includes a lifting assembly 3 for driving the lifting mounting base 4 to move up and down; see further details. Figure 3The aforementioned lifting assembly 3 includes a cylinder mounting bracket 3-2 fixedly attached to the main support 1. A lifting cylinder 3-1 is fixedly attached to the cylinder mounting bracket 3-2. A cylinder connector 3-3 is installed at the extended end of the lifting cylinder 3-1, and the cylinder connector 3-3 engages with an opening slot at the end of the lifting mounting seat 4. The cylinder connector 3-3 is cylindrical, and an annular groove is formed on the outer wall of the cylinder, which is adapted to the opening slot at the end of the lifting mounting seat 4. In addition, a longitudinally arranged lifting guide rail 2-3 is fixedly attached to the main support 1, and a slider that slides with the lifting guide rail 2-3 is fixedly attached to the drive mounting sleeve 2-1.

[0029] See further Figure 1 This embodiment also includes multiple sets of external clamping components 9 installed on the main bracket 1, which are used to press the external clamping components 9 onto multiple sets of support pads 7.

[0030] like Figure 5 As shown, the aforementioned external clamping assembly 9 includes a longitudinally arranged external clamping cylinder 9-1 fixedly connected to the main support 1. A hinge seat is fixedly connected to the top of the cylinder of the external clamping cylinder 9-1. A pressing member 9-3 is pivotally connected to the extended end of the external clamping cylinder 9-1. A flipping connecting plate 9-2 is pivotally connected between the middle of the pressing member 9-3 and the hinge seat. The pressing member 9-3 has a Y-shaped structure. Two sets of flipping connecting plates 9-2 are provided, and the two sets of flipping connecting plates 9-2 are symmetrically arranged about the pressing member 9-3. To facilitate the installation of the external clamping cylinder 9-1, a base plate is installed on the main support 1, and the cylinder of the external clamping cylinder 9-1 is installed on the base plate.

[0031] Working principle:

[0032] Before clamping and positioning the valve body, the piston rod of the lifting cylinder 3-1 is in a retracted state, so that the gripper sleeve 10 is located below the supporting top plate 6. At the same time, the piston rod of the external clamping cylinder 9-1 in the external clamping assembly 9 is in a retracted state, which makes it easier for the staff to place the valve body on the multiple sets of support pads 7.

[0033] The valve body to be processed is placed on multiple sets of support pads 7 installed on the top support plate 6. Then, the lifting cylinder 3-1 is started, which drives the lifting mounting seat 4 to rise, thereby driving the gripper sleeve 10, the two sets of inner clamping claws 8 and the inner clamping drive assembly 2 used to drive the two sets of inner clamping claws 8 to rise synchronously to the appropriate position, so that the two sets of inner clamping claws 8 can clamp the valve body at the appropriate height.

[0034] After completing the height adjustment, the internal drive cylinder 2-2 is activated, and the piston rod of the internal drive cylinder 2-2 extends, thereby causing the upper ends of the two sets of internal clamping claws 8 to open and clamp the inner wall of the valve body. After completing the inner wall clamping operation, the external clamping cylinders 9-1 in each external clamping assembly 9 are activated, causing the piston rod of the external clamping cylinder 9-1 to extend and drive the pressing parts 9-3 installed on it to flip downward, pressing the valve body onto each support pad 7, thereby achieving the clamping operation on the outer wall of the valve body. Through the above internal and external clamping operations, the valve body can be stably clamped and positioned, avoiding unnecessary rotation of the valve body during processing, thereby improving the accuracy of valve body processing.

Claims

1. A clamping device for valve processing, characterized in that: The system includes a main support (1), a lifting mounting seat (4) that can be raised and lowered, a gripper sleeve (10) fixedly connected to the lifting mounting seat (4), two sets of inner clamping claws (8) that are cross-distributed and hook-shaped are inserted inside the gripper sleeve (10), and an inner clamping drive assembly (2) is installed on the lifting mounting seat (4) for driving the two sets of inner clamping claws (8) to retract or open; it also includes a lifting assembly (3) for driving the lifting mounting seat (4) to move up and down; a supporting top plate (6) is installed on the top of the main support (1), a through groove corresponding to the gripper sleeve (10) is opened on the supporting top plate (6), and multiple sets of support pads (7) distributed around the through groove are installed on the top surface of the supporting top plate (6); it also includes multiple sets of outer clamping assemblies (9) installed on the main support (1) for pressing the outer clamping assemblies (9) onto the multiple sets of support pads (7).

2. The clamping device for valve processing as described in claim 1, characterized in that: It also includes multiple sets of positioning pins (5) that can be detachably installed on the lifting mounting base (4), and through holes corresponding to the multiple sets of positioning pins (5) are opened on the supporting top plate (6).

3. The clamping device for valve processing as described in claim 1, characterized in that: The inner clamping drive assembly (2) includes a drive mounting sleeve (2-1) fixed to the bottom surface of the lifting mounting seat (4), a mounting through groove is provided in the middle of the drive mounting sleeve (2-1), and an inner drive cylinder (2-2) fixed to the bottom of the drive mounting sleeve (2-1). The piston rod of the inner drive cylinder (2-2) passes through the mounting through groove and is equipped with a hinge joint (2-4). The hinge joint (2-4) is pivotally connected to the lower ends of two sets of inner clamping claws (8) through a pin. It also includes a horizontally arranged sliding pin (2-5) installed on the upper part of the drive mounting sleeve (2-1) and passing through the mounting through groove. Each inner clamping claw (8) is provided with a bent sliding groove (8-1), and the sliding pin (2-5) slides through the sliding groove (8-1).

4. The clamping device for valve processing as described in claim 3, characterized in that: in A guide sleeve is installed in the mounting slot in the middle of the drive mounting sleeve (2-1), and the guide sleeve is located below the sliding pin (2-5); the hinge joint (2-4) slides through the guide sleeve.

5. The clamping device for valve processing as described in claim 1, characterized in that: The lifting assembly (3) includes a cylinder mounting bracket (3-2) fixed on the main support (1), a lifting cylinder (3-1) fixed on the cylinder mounting bracket (3-2), and a cylinder connector (3-3) installed at the extended end of the lifting cylinder (3-1). The cylinder connector (3-3) is snapped into an opening slot at the end of the lifting mounting seat (4).

6. The clamping device for valve processing as described in claim 3, characterized in that: A longitudinally arranged lifting guide rail (2-3) is fixed on the main support (1), and a slider that slides with the lifting guide rail (2-3) is fixed on the drive mounting sleeve (2-1).

7. The clamping device for valve processing as described in claim 1, characterized in that: The external clamping assembly (9) includes a longitudinally arranged external clamping cylinder (9-1) fixed on the main support (1), a hinge seat fixed on the top of the cylinder of the external clamping cylinder (9-1), a pressing member (9-3) pivotally connected to the extended end of the external clamping cylinder (9-1), and a flipping connecting plate (9-2) pivotally connected between the middle of the pressing member (9-3) and the hinge seat.

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