Valve core machining fixing tool structure

Abstract

This utility model relates to a valve core processing fixture structure, belonging to the field of valve core processing technology. It includes an operating table, with a limiting frame fixedly connected to the upper side of the operating table. A front clamp is fixedly connected to one side of the limiting frame. Multiple sets of horizontally arranged intermediate clamps and an end clamp located at the tail end are sequentially connected to the outside of the front clamp. A clamping mechanism is installed between the end clamp and the limiting frame. Mounting seats are fixedly connected to both sides of the front clamp and intermediate clamps. Insert rods are fixedly connected to both sides of the intermediate clamps and end clamps, and the insert rods are slidably connected to the inner side of the mounting seats. A positioning mechanism is installed between the mounting seats and the insert rods. This device can drive the series clamps to synchronously clamp multiple sets of valve cores by rotating a single screw, while using a spring rack and pinion self-locking mechanism to prevent rebound. Furthermore, during disassembly, pulling a single-point pull rod can release the corresponding clamp lock, realizing simultaneous clamping of batch valve cores and independent disassembly at any workstation, significantly improving assembly and disassembly efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of valve core processing technology, specifically relating to a valve core processing fixture structure. Background Technology

[0002] In the valve manufacturing industry, valve core machining often requires batch clamping to improve efficiency. Traditional fixed tooling mostly uses single clamps or rigid series structures. When clamping, the clamps must be tightened one by one, which is cumbersome and time-consuming. When disassembling, the entire assembly must be loosened, making it impossible to replace a specific valve core independently. This mode easily leads to low production efficiency in batch processing, and frequent disassembly and assembly can cause a decrease in workpiece positioning accuracy.

[0003] Existing series fixtures have two major drawbacks: First, the lack of elastic buffering during the clamping process can easily lead to uneven force on the valve core and damage; second, due to the linkage locking of each station during disassembly, single-point release cannot be achieved, forcing the operator to disassemble all fixtures before replacing individual valve cores, which significantly increases the time spent ineffective operation and affects the continuity of processing. Therefore, a valve core processing fixing fixture structure is proposed here. Utility Model Content

[0004] The purpose of this invention is to provide a valve core machining fixture structure that can solve the problems mentioned in the background art.

[0005] The specific technical solution adopted in this utility model is as follows:

[0006] A valve core machining fixture structure includes an operating table. A limiting frame is fixedly connected to the upper side of the operating table. A front clamp is fixedly connected to one side of the inner side of the limiting frame. Multiple sets of horizontally arranged intermediate clamps and an end clamp located at the tail end are sequentially connected to the outside of the front clamp via a pop-out mechanism. Slots are provided between the intermediate clamps and the front clamp, between two adjacent sets of intermediate clamps, and between the end clamp and the intermediate clamp. A clamping mechanism is installed between the end clamp and the limiting frame. Mounting seats are fixedly connected to both sides of the front clamp and the intermediate clamps. Insert rods are fixedly connected to both sides of the intermediate clamps and the end clamps, and the insert rods are slidably connected to the inner side of the mounting seats. A positioning mechanism is installed between the mounting seats and the insert rods.

[0007] The present invention is further configured such that: the pop-out mechanism includes a first telescopic rod and a compression spring, the first telescopic rod and the compression spring are fixedly connected between the intermediate clamp and the front clamp, between two sets of adjacent intermediate clamps and between the end clamp and the intermediate clamp, and the compression spring is sleeved on the outside of the first telescopic rod.

[0008] This utility model is further configured such that: multiple sets of equally spaced anti-slip strips are fixedly connected to the inner side of the card slot.

[0009] The present invention is further configured such that: the clamping mechanism includes a screw and a connector, the screw is threaded to the outside of the limiting frame, the connector is fixedly connected to the outside of the end clamp, and the end of the screw is rotatably connected to the inside of the connector.

[0010] The present invention is further configured such that: the positioning mechanism includes a first rack, a mounting plate, a second rack, a second telescopic rod, and a spring; the first rack is fixedly connected to the upper side of the insertion rod; the mounting plate is slidably connected to the inner side of the mounting base; and the second rack is fixedly connected to the lower side of the mounting plate.

[0011] The present invention is further configured such that the first rack and the saw teeth of the mounting plate are both right-angled triangular shapes, and the inclined surfaces of the two sets of saw teeth abut each other.

[0012] The present invention is further configured such that: the second telescopic rod and the spring are both fixedly connected between the upper side of the mounting plate and the inner upper side of the mounting base, and the number of the second telescopic rod and the spring is several groups arranged symmetrically, with the spring sleeved on the outer side of the second telescopic rod.

[0013] The present invention is further configured such that: a pull rod is fixedly connected to the upper side of the mounting plate, and the end of the pull rod protrudes outside the mounting base and is slidably connected to the mounting base.

[0014] The technical effects achieved by this utility model are as follows:

[0015] This utility model provides a valve core processing and fixing fixture structure. By rotating a single screw, multiple sets of clamps can be driven to retract in unison, achieving simultaneous clamping of multiple valve cores at one time. Furthermore, the use of elastic compression springs and anti-slip strips ensures that each valve core is subjected to uniform force, avoiding the tedious operation of clamping each valve core individually in the traditional method.

[0016] This utility model discloses a valve core machining and fixing fixture structure. It automatically locks the fixture position through a rack and pinion self-locking structure to prevent displacement caused by spring rebound. At the same time, pulling a single-point pull rod can release the locking of a specific work position. Individual valve cores can be replaced without the need for overall disassembly, which greatly shortens maintenance time. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 For practical purposes Figure 1 Enlarged view of the structure at point A in the middle;

[0019] Figure 3 For practical purposes Figure 1 Enlarged view of the structure at point B;

[0020] Figure 4 This is a partial structural front sectional view of this utility model;

[0021] Figure 5 For practical purposes Figure 4 Enlarged view of the structure at point C.

[0022] In the diagram: 1. Operating table; 2. Limiting frame; 3. Front clamp; 4. Middle clamp; 5. End clamp; 6. First telescopic rod; 7. Compression spring; 8. Slot; 9. Anti-slip strip; 10. Screw; 11. Connector; 12. Mounting base; 13. Insert rod; 14. First rack; 15. Mounting plate; 16. Second rack; 17. Second telescopic rod; 18. Spring; 19. Pull rod; Detailed Implementation

[0023] To make the purpose and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific implementations of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0024] like Figure 1 As shown, a valve core machining fixture structure includes an operating table 1, which serves as the basic support platform for the entire fixture, with its horizontal upper surface providing an installation reference for other components. A limiting frame 2 is fixedly connected to the upper side of the operating table 1, forming the main frame of the fixture and constraining the movement range of each clamp to maintain structural stability. A front clamp 3 is fixedly connected to one side of the inner side of the limiting frame 2, serving as a fixed reference end to determine the initial position of the valve core clamping. Multiple sets of laterally arranged intermediate clamps 4 and an end clamp 5 located at the tail end are sequentially connected to the outside of the front clamp 3 via a pop-out mechanism. This series layout allows for simultaneous clamping at multiple workstations.

[0025] The ejection mechanism includes a first telescopic rod 6 and a compression spring 7. The first telescopic rod 6 serves as a guide to ensure the clamp moves in a straight line while limiting the maximum stroke. The compression spring 7 provides elastic restoring force, enabling the clamp to automatically reset. The first telescopic rod 6 and the compression spring 7 are both fixedly connected between the intermediate clamp 4 and the front clamp 3, between two adjacent sets of intermediate clamps 4, and between the end clamp 5 and the intermediate clamp 4. The compression spring 7 is sleeved on the outside of the first telescopic rod 6. This coaxial arrangement saves space and ensures balanced force distribution.

[0026] like Figure 2 As shown, slots 8 are provided between the intermediate clamp 4 and the front clamp 3, between two adjacent sets of intermediate clamps 4, and between the end clamp 5 and the intermediate clamp 4. This V-groove structure can adapt to the positioning requirements of valve cores of different diameters. Multiple sets of equally spaced anti-slip strips 9 are fixedly connected to the inner side of the slots 8. These raised strips made of rubber can increase friction and prevent the valve core from slipping and shifting during processing.

[0027] like Figure 3 As shown, a clamping mechanism is installed between the end clamp 5 and the limiting frame 2. The clamping mechanism includes a screw 10 and a connector 11. The screw 10 serves as a power input element, converting rotational motion into linear thrust through threaded transmission. The screw 10 is threaded to the outside of the limiting frame 2, and the connector 11 is fixedly connected to the outside of the end clamp 5. The end of the screw 10 is rotatably connected to the inside of the connector 11. This connection method can transmit axial thrust while allowing the screw 10 to rotate freely.

[0028] like Figure 2 as well as Figure 4 As shown, mounting bases 12 are fixedly connected to both sides of the front clamp 3 and the middle clamp 4, providing a mounting foundation for the positioning mechanism. Insert rods 13 are fixedly connected to both sides of the middle clamp 4 and the end clamp 5, and the insert rods 13 are slidably connected to the inner side of the mounting base 12. This insertion fit ensures the guiding accuracy when the clamp moves. A positioning mechanism is installed between the mounting base 12 and the insert rods 13. The positioning mechanism includes a first rack 14, a mounting plate 15, a second rack 16, a second telescopic rod 17, and a spring 18, which together constitute a self-locking functional module. The first rack 14 is fixedly connected to the upper side of the insert rod 13 and moves synchronously with the clamp; the mounting plate 15 is slidably connected to the inner side of the mounting base 12, serving as a movable carrier; the second rack 16 is fixedly connected to the lower side of the mounting plate 15 and meshes with the first rack 14.

[0029] like Figure 5 As shown, the serrations of the first rack 14 and the mounting plate 15 are both right-angled triangular shapes, and the inclined surfaces of the two sets of serrations abut against each other. This special tooth design achieves a one-way self-locking function. The second telescopic rod 17 and the spring 18 are both fixedly connected between the upper side of the mounting plate 15 and the upper inner side of the mounting base 12. The number of the second telescopic rod 17 and the spring 18 are several sets and arranged symmetrically. The spring 18 is sleeved on the outside of the second telescopic rod 17. This combination structure provides elastic restoring force and restricts the movement trajectory.

[0030] like Figure 4 As shown, a pull rod 19 is fixedly connected to the upper side of the mounting plate 15, and the end of the pull rod 19 protrudes from the outside of the mounting base 12 and is slidably connected to the mounting base 12. This exposed operating rod facilitates manual intervention to unlock and realizes single-point control function.

[0031] The working principle of this utility model is as follows: When batch processing of valve cores is required, the operator places multiple sets of valve cores into the slots 8 between the front clamp 3, the intermediate clamp 4 and the end clamp 5 respectively. By rotating the screw 10 connected to the limit frame 2, the end of the screw 10 pushes the connector 11 fixed to the end clamp 5, causing the end clamp 5 to move towards the center of the operating table 1. This thrust is transmitted step by step through the first telescopic rod 6 between adjacent clamps, causing all intermediate clamps 4 and the front clamp 3 to retract synchronously. During this process, the compression spring 7 sleeved on the first telescopic rod 6 is compressed, so that the anti-slip strip 9 in the slot 8 evenly presses the valve core, realizing the one-time fixing of multiple valve cores.

[0032] When a specific valve core needs to be disassembled after processing, the reverse screw 10 releases pressure, and the spring 7 rebounds to push the clamp to separate. At this time, the positioning mechanisms on both sides of the clamp play a role. When the insert rod 13 slides into the mounting base 12 with the clamp, the first rack 14 fixed to the insert rod 13 contacts the inclined surface of the second rack 16 at the bottom of the mounting plate 15, pushing the mounting plate 15 to move upward and compress the spring 18. After the first rack 14 passes the engagement point, the spring 18 sleeved on the second telescopic rod 17 pushes the second rack 16 to reset, forming a right-angle triangular tooth engagement with the first rack 14, effectively resisting the rebound force of the spring 7 and preventing the clamp from slipping accidentally. If it is necessary to disassemble a valve core at a certain station, simply pull up the pull rod 19 on the mounting base 12 of that station to disengage the second rack 16 from the first rack 14, thereby releasing the locking state of the corresponding clamp. This design realizes efficient synchronous clamping and selective disassembly of multiple valve cores, significantly improving clamping efficiency.

[0033] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the art.

Claims

1. A fixture structure for fixing valve core processing, characterized in that: It includes an operating table (1), a limiting frame (2) is fixedly connected to the upper side of the operating table (1), a front clamp (3) is fixedly connected to the inner side of the limiting frame (2), and a front clamp (3) is connected to the outside of the front clamp (3) by a pop-out mechanism, with multiple sets of horizontally arranged intermediate clamps (4) and an end clamp (5) located at the tail end. Slots (8) are provided between the intermediate clamp (4) and the front clamp (3), between two adjacent sets of intermediate clamps (4), and between the end clamp (5) and the intermediate clamp (4). A clamping mechanism is installed between the end clamp (5) and the limiting frame (2). Mounting seats (12) are fixedly connected to both sides of the front clamp (3) and the intermediate clamp (4). Insert rods (13) are fixedly connected to both sides of the intermediate clamp (4) and the end clamp (5), and the insert rods (13) are slidably connected to the inner side of the mounting seat (12). A positioning mechanism is installed between the mounting seat (12) and the insert rods (13).

2. The valve core machining fixing fixture structure according to claim 1, characterized in that, The pop-out mechanism includes a first telescopic rod (6) and a compression spring (7). The first telescopic rod (6) and the compression spring (7) are fixedly connected between the intermediate clamp (4) and the front clamp (3), between two adjacent intermediate clamps (4), and between the end clamp (5) and the intermediate clamp (4). The compression spring (7) is sleeved on the outside of the first telescopic rod (6).

3. The valve core machining fixing fixture structure according to claim 1, characterized in that, Multiple sets of equally spaced anti-slip strips (9) are fixedly connected to the inner side of the slot (8).

4. The valve core machining fixing fixture structure according to claim 1, characterized in that, The clamping mechanism includes a screw (10) and a connector (11). The screw (10) is threaded to the outside of the limiting frame (2), and the connector (11) is fixedly connected to the outside of the end clamp (5). The end of the screw (10) is rotatably connected to the inside of the connector (11).

5. The valve core machining fixing fixture structure according to claim 1, characterized in that, The positioning mechanism includes a first rack (14), a mounting plate (15), a second rack (16), a second telescopic rod (17), and a spring (18). The first rack (14) is fixedly connected to the upper side of the insert rod (13), the mounting plate (15) is slidably connected to the inner side of the mounting base (12), and the second rack (16) is fixedly connected to the lower side of the mounting plate (15).

6. The valve core machining fixing fixture structure according to claim 5, characterized in that, The first rack (14) and the mounting plate (15) both have right-angled triangular teeth, and the inclined surfaces of the two sets of teeth abut against each other.

7. The valve core machining fixing fixture structure according to claim 5, characterized in that, The second telescopic rod (17) and the spring (18) are both fixedly connected between the upper side of the mounting plate (15) and the upper inside of the mounting base (12), and the number of the second telescopic rod (17) and the spring (18) is several groups and arranged symmetrically, with the spring (18) sleeved on the outside of the second telescopic rod (17).

8. The valve core machining fixing fixture structure according to claim 7, characterized in that, A pull rod (19) is fixedly connected to the upper side of the mounting plate (15), and the end of the pull rod (19) protrudes outside the mounting base (12) and is slidably connected to the mounting base (12).

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