Pressure valve dust cap assembly tool

Abstract

The utility model discloses a kind of pressure valve dust cap assembly tool, including rack and the bearing seat on rack, bearing seat is used to bear the valve body to be assembled, longitudinal tightening mechanism and transverse tightening mechanism are equipped on rack, longitudinal tightening mechanism includes longitudinal driver, first rotary driver and first rotary joint, longitudinal driver drives first rotary joint longitudinal movement, transverse tightening mechanism includes transverse driver, second rotary driver and second rotary joint, transverse driver drives second rotary joint transverse movement, first rotary joint and second rotary joint are all equipped with the positioning slot adapted with dust cap end portion. The utility model is through the cooperation of longitudinal tightening mechanism and transverse tightening mechanism, can realize synchronous assembly to dust cap in the valve body longitudinal and transverse thread hole, significantly improve assembly efficiency, ensure the consistency and precision of each orientation thread connection simultaneously, with Compact structure, easy operation, the characteristics of high degree of automation.

Description

Technical Field

[0001] This utility model relates to the field of fuel pump assembly technology, and in particular to a tooling for assembling a pressure valve dust cap. Background Technology

[0002] The fuel pressure valve is a key component in the fuel injection system of an automotive engine. Its main function is to adjust the fuel pressure in the fuel distribution pipe according to changes in intake manifold pressure or atmospheric pressure, ensuring that the difference between the fuel pressure injected by the injector and the intake pressure remains constant, thereby achieving precise fuel metering and optimizing the engine's combustion efficiency and emission performance.

[0003] Currently, common fuel pressure valve structures typically include a valve body with a complex internal cavity and a dust cap to protect the valve core and prevent the intrusion of external impurities. To ensure that the valve body can be securely mounted on the fuel distribution pipe or fuel rail and connect the various fuel lines, the valve body usually needs to be machined with multiple functional holes. These holes are spatially distributed at a certain angle, typically including longitudinal threaded holes extending along the longitudinal axis of the valve body, and transverse threaded holes arranged radially or tangentially along the valve body.

[0004] In existing production and assembly processes, the assembly of subsequent joints, plugs, or other accessories for these threaded holes with different orientations generally adopts a step-by-step, single-station operation method. The specific operation process is usually as follows: First, the valve body is fixed to a station using a specific fixture, and the operator or automated equipment completes the tightening assembly of the accessories in the longitudinal threaded hole; then, the valve body is removed from the fixture, re-clamped or adjusted to another station specifically for horizontal operation, and the tightening assembly of the accessories in the transverse threaded hole is performed.

[0005] This traditional step-by-step assembly method has significant shortcomings. First, multiple clamping and positioning not only prolong auxiliary time, but repeated clamping also easily introduces problems with inconsistent positioning benchmarks, affecting the accuracy and consistency of threaded connections. Second, the breakdown of processes leads to a longer production cycle time and low assembly efficiency, making it difficult to meet the requirements of modern large-scale production for high efficiency and low cost. Utility Model Content

[0006] The purpose of this utility model is to overcome the shortcomings and deficiencies of the existing technology and to provide a tooling for assembling a pressure valve dust cap.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a pressure valve dust cap assembly fixture, comprising a frame and a support seat mounted on the frame, the support seat supporting the valve body to be assembled, a longitudinal tightening mechanism and a transverse tightening mechanism mounted on the frame, the longitudinal tightening mechanism corresponding to the longitudinal threaded hole on the valve body, and the transverse tightening mechanism corresponding to the transverse threaded hole on the valve body; the longitudinal tightening mechanism includes a longitudinal driver, a first rotary driver, and a first rotary joint, the longitudinal driver being fixed to the frame, and the first rotary driver being connected to the output end of the longitudinal driver via a transmission connection. The first rotary driver is connected to the first rotary joint, and the first rotary joint is provided with a first positioning groove adapted to the end of the dust cap. The second rotary driver is fixed on the frame, and the second rotary driver is connected to the output end of the first rotary driver and slides laterally under the drive of the first rotary driver. The output end of the second rotary driver is connected to the second rotary joint, and the second rotary joint is provided with a second positioning groove adapted to the end of the dust cap.

[0008] By adopting the above technical solution, and simultaneously setting longitudinal and transverse tightening mechanisms on the frame, with each mechanism corresponding to the longitudinal and transverse threaded holes on the valve body respectively, simultaneous tightening of multiple spatially oriented threaded holes on the valve body is achieved. This solution replaces the traditional step-by-step, single-station assembly method, reducing multiple clamping and repositioning processes for the valve body. This not only significantly shortens the production cycle and greatly improves assembly efficiency, but also avoids positioning reference deviations caused by repeated clamping, effectively ensuring torque consistency and assembly accuracy in all directions of the threaded connections. Simultaneously, the positioning grooves on the first and second rotary joints ensure coaxial alignment of the dust cap during tightening, reducing the risk of misalignment or stripping during assembly.

[0009] As a preferred technical solution of this utility model, the transverse tightening mechanism is provided in two sets, and the two sets of transverse tightening mechanisms are symmetrically arranged on both sides of the bearing seat.

[0010] By adopting the above technical solution, the tooling can simultaneously tighten the transverse threaded holes on both sides of the valve body.

[0011] As a preferred embodiment of the present invention, the support base includes two longitudinal mounting plates arranged at intervals. The upper ends of the two longitudinal mounting plates are respectively provided with placement openings that are adapted to the outer wall of the valve body. The main body of the valve body is accommodated between the two longitudinal mounting plates, and the two ends of the valve body are respectively inserted into the corresponding placement openings.

[0012] By adopting the above technical solution, the structure exposes the main body of the valve body between two longitudinal mounting plates during the assembly process, so that the longitudinal threaded holes and transverse threaded holes of the valve body are aligned with the longitudinal tightening mechanism and the transverse tightening mechanism.

[0013] As a preferred embodiment of this utility model, the support base further includes a connecting plate fixedly connected to the bottom of the two longitudinal mounting plates, and the connecting plate is detachably fixed to the frame by fasteners.

[0014] By adopting the above technical solution, this structure facilitates the quick replacement of corresponding carrier seats according to different specifications and models of valve bodies, improving the versatility and flexible production capabilities of the tooling. At the same time, the fastener connection method ensures the rigidity of the connection between the carrier seat and the frame, avoiding the impact on assembly accuracy due to carrier seat movement during assembly.

[0015] As a preferred embodiment of the present invention, the longitudinal tightening mechanism further includes a longitudinal mounting frame and a longitudinal sliding seat. The longitudinal mounting frame is fixed on the frame, and the longitudinal sliding seat is slidably mounted on the longitudinal mounting frame. The longitudinal driver is fixed to the top of the longitudinal mounting frame, and the output end of the longitudinal driver is connected to the longitudinal sliding seat for transmission. The first rotary driver is fixedly mounted on the longitudinal sliding seat.

[0016] By adopting the above technical solution, and by setting up a longitudinal mounting bracket and a longitudinal sliding seat, the longitudinal driver smoothly guides and drives the first rotary driver, ensuring that the first rotary joint has good straightness and repeatability during longitudinal movement. The layout of fixing the longitudinal driver to the top of the longitudinal mounting bracket optimizes the spatial structure of the longitudinal tightening mechanism and avoids interference between moving parts and other mechanisms.

[0017] As a preferred embodiment of the present invention, the transverse tightening mechanism further includes a transverse mounting bracket and a transverse sliding seat. The transverse mounting bracket is fixed on the frame, the transverse sliding seat is slidably mounted on the transverse mounting bracket, the transverse driver is fixed on the top of the transverse mounting bracket, and the output end of the transverse driver is connected to the transverse sliding seat for transmission. The second rotary driver is fixedly mounted on the transverse sliding seat.

[0018] By adopting the above technical solution, and by setting up a transverse mounting bracket and a transverse sliding seat, the transverse driver can accurately guide and drive the second rotary driver, ensuring the straightness and positional accuracy of the second rotary joint when it moves laterally. The arrangement of fixing the transverse driver to the top of the transverse mounting bracket makes the overall structure of the transverse tightening mechanism more compact.

[0019] As a preferred embodiment of the present invention, the first positioning groove and / or the second positioning groove are polygonal grooves, and the cross-sectional shape of the polygonal groove is adapted to the outer peripheral contour of the end of the dust cap.

[0020] By adopting the above technical solution, the structure ensures that the torque of the rotary drive can be reliably transmitted to the dust cap, avoiding assembly failure or damage to the dust cap due to slippage, and further ensuring the stability of assembly quality. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the longitudinal tightening mechanism in this utility model; Figure 3 This is a schematic diagram of the transverse tightening mechanism in this utility model; Figure 4 This is a schematic diagram of the structure of the bearing seat in this utility model; Figure 5 This is a schematic diagram of the rotary joint in this utility model; Figure 6 This is a schematic diagram of the valve body and dust cap in this utility model.

[0022] Reference numerals: 1. Frame; 2. Bearing seat; 3. Longitudinal tightening mechanism; 4. Transverse tightening mechanism; 5. Longitudinal drive; 6. First rotary drive; 7. First rotary joint; 8. Valve body; 9. Transverse drive; 10. Second rotary drive; 11. Second rotary joint; 12. Dust cap; 13. Longitudinal mounting plate; 14. Placement port; 15. Connecting plate; 16. Longitudinal mounting bracket; 17. Longitudinal sliding seat; 18. Transverse mounting bracket; 19. Transverse sliding seat; 20. Polygonal groove. Detailed Implementation

[0023] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0024] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0025] like Figures 1 to 6The illustrated pressure valve dust cap assembly fixture includes a frame 1 and a support 2 mounted on the frame 1. The support 2 supports the valve body 8 to be assembled. The frame 1 is provided with a longitudinal tightening mechanism 3 and a transverse tightening mechanism 4. The longitudinal tightening mechanism 3 is corresponding to the longitudinal threaded hole on the valve body 8, and the transverse tightening mechanism 4 is corresponding to the transverse threaded hole on the valve body 8. The longitudinal tightening mechanism 3 includes a longitudinal driver 5, a first rotary driver 6, and a first rotary joint 7. The longitudinal driver 5 is fixed to the frame 1, and the first rotary driver 6 is drivenly connected to the output end of the longitudinal driver 5. Driven to slide longitudinally, the output end of the first rotary driver 6 is connected to the first rotary joint 7, and the first rotary joint 7 is provided with a first positioning groove adapted to the end of the dust cap 12; the transverse tightening mechanism 4 includes a transverse driver 9, a second rotary driver 10 and a second rotary joint 11, the transverse driver 9 is fixed on the frame 1, the second rotary driver 10 is connected to the output end of the transverse driver 9 and slides laterally under the drive of the transverse driver 9, the output end of the second rotary driver 10 is connected to the second rotary joint 11, and the second rotary joint 11 is provided with a second positioning groove adapted to the end of the dust cap 12.

[0026] By simultaneously installing a longitudinal tightening mechanism 3 and a transverse tightening mechanism 4 on the frame 1, and aligning them with the longitudinal and transverse threaded holes on the valve body 8 respectively, simultaneous tightening of multiple spatially oriented threaded holes on the valve body 8 is achieved. This solution replaces the traditional step-by-step, single-station assembly method, reducing the number of clamping and repositioning processes for the valve body 8. This not only significantly shortens the production cycle and greatly improves assembly efficiency, but also avoids positioning reference deviations caused by repeated clamping, effectively ensuring torque consistency and assembly accuracy of threaded connections in all directions. Simultaneously, the positioning grooves on the first rotary joint 7 and the second rotary joint 11 ensure the coaxial alignment of the dust cap 12 during tightening, reducing the risk of misalignment or stripping during assembly.

[0027] Two sets of transverse tightening mechanisms 4 are provided, and the two sets of transverse tightening mechanisms 4 are symmetrically arranged on both sides of the bearing seat 2. This allows the tooling to simultaneously tighten the transverse threaded holes on the left and right sides of the valve body 8.

[0028] The support 2 includes two longitudinally mounted plates 13 arranged at intervals. The upper ends of each of the two longitudinally mounted plates 13 are recessed with placement openings 14 that fit the outer wall of the valve body 8. The main body of the valve body 8 is housed between the two longitudinally mounted plates 13, and both ends of the valve body 8 are respectively inserted into the corresponding placement openings 14. This structure allows the main body of the valve body 8 to be exposed between the two longitudinally mounted plates 13 during assembly, aligning the longitudinal and transverse threaded holes of the valve body 8 with the longitudinal tightening mechanism 3 and the transverse tightening mechanism 4.

[0029] The support base 2 also includes a connecting plate 15 fixedly connected to the bottom of the two longitudinal mounting plates 13. The connecting plate 15 is detachably fixed to the frame 1 by fasteners. This structure facilitates quick replacement of the corresponding support base 2 according to different specifications and models of valve bodies 8, improving the versatility and flexible production capabilities of the tooling. At the same time, the fastener connection method ensures the rigidity of the connection between the support base 2 and the frame 1, avoiding the impact on assembly accuracy due to the movement of the support base 2 during assembly.

[0030] The longitudinal tightening mechanism 3 also includes a longitudinal mounting bracket 16 and a longitudinal sliding seat 17. The longitudinal mounting bracket 16 is fixed to the frame 1, and the longitudinal sliding seat 17 is slidably mounted on the longitudinal mounting bracket 16. The longitudinal driver 5 is fixed to the top of the longitudinal mounting bracket 16, and the output end of the longitudinal driver 5 is connected to the longitudinal sliding seat 17. The first rotary driver 6 is fixedly mounted on the longitudinal sliding seat 17. By setting the longitudinal mounting bracket 16 and the longitudinal sliding seat 17, the longitudinal driver 5 can smoothly guide and drive the first rotary driver 6, so that the first rotary joint 7 has good straightness and repeatability during longitudinal movement. The layout of fixing the longitudinal driver 5 to the top of the longitudinal mounting bracket 16 optimizes the spatial structure of the longitudinal tightening mechanism 3 and avoids interference between moving parts and other mechanisms.

[0031] The transverse tightening mechanism 4 also includes a transverse mounting bracket 18 and a transverse sliding seat 19. The transverse mounting bracket 18 is fixed to the frame 1, and the transverse sliding seat 19 is slidably mounted on the transverse mounting bracket 18. The transverse driver 9 is fixed to the top of the transverse mounting bracket 18, and the output end of the transverse driver 9 is connected to the transverse sliding seat 19. The second rotary driver 10 is fixedly mounted on the transverse sliding seat 19. By setting the transverse mounting bracket 18 and the transverse sliding seat 19, the transverse driver 9 can accurately guide and drive the second rotary driver 10, ensuring the straightness and positional accuracy of the second rotary joint 11 when it moves laterally. The arrangement of the transverse driver 9 being fixed to the top of the transverse mounting bracket 18 makes the overall structure of the transverse tightening mechanism 4 more compact.

[0032] The first positioning groove and / or the second positioning groove is a polygonal groove 20, the cross-sectional shape of which is adapted to the outer peripheral contour of the end of the dust cap 12. This structure ensures that the torque of the rotary actuator can be reliably transmitted to the dust cap 12, avoiding assembly failure or damage to the dust cap 12 due to slippage, and further ensuring the stability of assembly quality. In this embodiment, the polygonal groove 20 is hexagonal or octagonal.

[0033] Work process: When using this tool, first screw the dust cap 12 into the corresponding longitudinal and transverse threaded holes on the valve body 8 in a pre-tightening manner, and then position and install the valve body 8 on the support seat 2.

[0034] After the equipment is started, the longitudinal tightening mechanism 3 takes priority action: the longitudinal driver 5 drives the first rotary joint 7 to feed longitudinally toward the valve body 8, while the first rotary driver 6 drives the first rotary joint 7 to rotate. During the combined motion of the first rotary joint 7's movement and rotation, the first positioning groove at the end of the first rotary joint 7 automatically engages circumferentially with the end of the dust cap 12 located at the upper end of the valve body 8. Then, under the action of the rotation drive, the dust cap 12 is tightened into the longitudinal threaded hole with a preset torque.

[0035] After the longitudinal dust cap 12 is tightened, the longitudinal tightening mechanism 3 keeps the current longitudinal feed position unchanged and continuously applies axial pressure through the longitudinal driver 5, so that the first rotary joint 7 presses against the upper end of the valve body 8, thereby pressing and fixing the valve body 8 relative to the bearing seat 2, effectively preventing the valve body 8 from moving or shifting during the subsequent transverse assembly process.

[0036] With the valve body 8 clamped and fixed, the two sets of transverse tightening mechanisms 4 are activated simultaneously: the transverse actuators 9 on both sides drive the corresponding second rotary joints 11 to feed towards each other in the transverse direction towards the valve body 8, while the second rotary actuator 10 drives the second rotary joints 11 to rotate. During the combined action of travel and rotation, the second positioning groove automatically engages circumferentially with the ends of the dust caps 12 located on both sides of the transverse direction of the valve body 8, and then the dust caps 12 on both sides are simultaneously tightened into the corresponding transverse threaded holes. After all the dust caps 12 are assembled, each tightening mechanism is reset in sequence, and the assembled valve body 8 can be removed to enter the next assembly cycle.

[0037] In this embodiment, the longitudinal driver 5 and the transverse driver 9 can be any one of a pneumatic cylinder, a hydraulic cylinder, or an electric cylinder. Similarly, the first rotary driver 6 and the second rotary driver 10 can be any one of a servo motor, a stepper motor, or a pneumatic motor. Those skilled in the art can flexibly select the specific type of the above-mentioned driving components according to the actual assembly process requirements and cost control needs, all of which fall within the protection scope of this utility model. To facilitate automated control, each of the above-mentioned drivers can be connected to a programmable logic controller (PLC) or an industrial computer to coordinate and control the timing, stroke, and rotational torque of the longitudinal driver 5, the transverse driver 9, the first rotary driver 6, and the second rotary driver 10 through a preset control program, thereby realizing fully automated synchronous assembly of the dust cap 12.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the utility model as defined by the appended claims and their equivalents.

Claims

1. A pressure valve dust cap assembly fixture, comprising a frame (1) and a support seat (2) disposed on the frame (1), the support seat (2) being used to support a valve body (8) to be assembled, characterized in that, The frame (1) is provided with a longitudinal tightening mechanism (3) and a transverse tightening mechanism (4). The longitudinal tightening mechanism (3) is configured to correspond to the longitudinal threaded hole on the valve body (8), and the transverse tightening mechanism (4) is configured to correspond to the transverse threaded hole on the valve body (8). The longitudinal tightening mechanism (3) includes a longitudinal driver (5), a first rotary driver (6), and a first rotary joint (7). The longitudinal driver (5) is fixed on the frame (1). The first rotary driver (6) is drivenly connected to the output end of the longitudinal driver (5) and slides longitudinally under the drive of the longitudinal driver (5). The output end of the first rotary driver (6) is connected to a... The first rotary joint (7) is provided with a first positioning groove adapted to the end of the dust cap (12); the transverse tightening mechanism (4) includes a transverse driver (9), a second rotary driver (10) and a second rotary joint (11). The transverse driver (9) is fixed on the frame (1). The second rotary driver (10) is connected to the output end of the transverse driver (9) and slides transversely under the drive of the transverse driver (9). The output end of the second rotary driver (10) is connected to the second rotary joint (11). The second rotary joint (11) is provided with a second positioning groove adapted to the end of the dust cap (12).

2. The pressure valve dust cap assembly fixture according to claim 1, characterized in that: The transverse tightening mechanism (4) is provided in two sets, and the two sets of transverse tightening mechanisms (4) are symmetrically arranged on both sides of the bearing seat (2).

3. The pressure valve dust cap assembly fixture according to claim 1, characterized in that: The support base (2) includes two longitudinal mounting plates (13) arranged at intervals. The upper ends of the two longitudinal mounting plates (13) are respectively provided with placement openings (14) that are adapted to the outer wall of the valve body (8). The main body of the valve body (8) is accommodated between the two longitudinal mounting plates (13), and the two ends of the valve body (8) are respectively inserted into the corresponding placement openings (14).

4. The pressure valve dust cap assembly fixture according to claim 3, characterized in that: The support base (2) also includes a connecting plate (15) fixedly connected to the bottom of the two longitudinal mounting plates (13), and the connecting plate (15) is detachably fixed to the frame (1) by fasteners.

5. The pressure valve dust cap assembly fixture according to claim 1, characterized in that: The longitudinal tightening mechanism (3) further includes a longitudinal mounting bracket (16) and a longitudinal sliding seat (17). The longitudinal mounting bracket (16) is fixed on the frame (1). The longitudinal sliding seat (17) is slidably mounted on the longitudinal mounting bracket (16) along the longitudinal direction. The longitudinal driver (5) is fixed on the top of the longitudinal mounting bracket (16), and the output end of the longitudinal driver (5) is connected to the longitudinal sliding seat (17) in a transmission connection. The first rotary driver (6) is fixedly mounted on the longitudinal sliding seat (17).

6. The pressure valve dust cap assembly fixture according to claim 1, characterized in that: The transverse tightening mechanism (4) further includes a transverse mounting bracket (18) and a transverse sliding seat (19). The transverse mounting bracket (18) is fixed on the frame (1). The transverse sliding seat (19) is slidably mounted on the transverse mounting bracket (18) in the transverse direction. The transverse driver (9) is fixed on the top of the transverse mounting bracket (18), and the output end of the transverse driver (9) is connected to the transverse sliding seat (19) in a transmission connection. The second rotary driver (10) is fixedly mounted on the transverse sliding seat (19).

7. The pressure valve dust cap assembly fixture according to claim 1, characterized in that: The first positioning groove and / or the second positioning groove are polygonal grooves (20), and the cross-sectional shape of the polygonal groove (20) is adapted to the outer peripheral contour of the end of the dust cap (12).

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