An automatic press-fitting fixture for AKF valves

Abstract

This application relates to an automatic press-fit fixture for AKF valves, belonging to the technical field of assembly equipment. The automatic press-fit fixture for AKF valves includes a base, a valve fixture, an integrated pipe fixture, and a drive sliding component. The integrated pipe fixture includes: a fixture body for facilitating the clamping and fixing of the press-fit ends of two types of pipes; a first support plate for supporting short pipes; a second support plate for supporting long pipes; and a clamping assembly for clamping or decompressing the pipes. This application involves placing the clamping end of the pipe into a clamping groove and selecting a corresponding placement path based on the pipe length. The first support plate supports and fixes the short pipe, and the second support plate supports and fixes the long pipe. Then, the clamping assembly clamps the pipe while simultaneously placing the valve body inside the valve fixture. Finally, the drive sliding component pushes the valve fixture towards the integrated pipe fixture, thereby pressing the valve body into the pipe, completing the assembly of the AKF valve assembly, and improving the efficiency of changing between two sets of AKF valve assemblies.

Description

Technical Field

[0001] This application relates to the technical field of assembly equipment, and in particular to an automatic press-fitting fixture for AKF valves. Background Technology

[0002] The AKF valve assembly is a core component of the engine fuel vapor emission control system, responsible for recovering fuel vapor and regulating crankcase pressure, directly affecting environmental compliance and operational stability. The AKF valve assembly consists of a valve body and a pipe body.

[0003] Currently, the assembly of AKF valve components is mainly done manually. With the advancement of technology, some jigs have gradually appeared on the market to assist in the assembly. These include valve jigs for clamping the valve body, pipe jigs for clamping the pipe body, and sliding drive components that drive the valve jig and pipe jig to approach each other and make the valve body and pipe body fit together.

[0004] However, since AKF valve assemblies are divided into two commonly used products based on their length, with the same valve body model but different pipe lengths, two types of pipe fixtures are designed to assemble these two products. When using them, the pipe fixtures are selectively installed according to the different models of the AKF valve assemblies to be assembled, so as to cooperate with the valve fixtures and sliding drive components. Manual operation requires frequent replacement of pipe fixtures, which greatly reduces the efficiency of changing models. Utility Model Content

[0005] To improve the efficiency of changing between two sets of AKF valve assemblies, this application provides an automatic press-fitting fixture for AKF valves.

[0006] This application provides an automatic press-fitting fixture for AKF valves, which adopts the following technical solution:

[0007] An automatic press-fitting fixture for AKF valves includes a base, a valve fixture, an integrated pipe fixture, and a drive sliding component. The valve fixture is slidably mounted on the base and used for clamping and positioning the valve body. The integrated pipe fixture is mounted on the base and used for clamping and positioning the pipe body. The drive sliding component is mounted on the base and used to drive the valve fixture to slide along a direction closer to or away from the integrated pipe fixture. The integrated pipe fixture can accommodate two pipes of different lengths. The integrated pipe fixture includes:

[0008] The fixture body is mounted on the machine base and has a clamping groove, which facilitates the clamping and fixing of the press-fitting ends of the two types of pipes.

[0009] A first support plate is mounted on the machine base and is used to support the side of the short pipe away from the pressing end.

[0010] The second support plate is mounted on the machine base and is used to support the side of the long tube away from the pressing end.

[0011] A clamping assembly, which is mounted on a base and used to clamp or decompress the pipe body in the clamp groove.

[0012] By adopting the above technical solution, the pressing end of the pipe body is placed into the clamp groove, and the corresponding placement path is selected according to the length of the pipe body. The first support plate supports and fixes the short pipe, the second support plate supports and fixes the long pipe, and then the pressing assembly presses the pipe body. At the same time, the valve body is placed in the valve fixture, and finally the driving sliding component pushes the valve fixture to slide towards the integrated pipe fixture, thereby pressing the valve body into the pipe body, completing the assembly of the AKF valve assembly, and improving the efficiency of changing the two sets of AKF valve assemblies.

[0013] Furthermore, the fixture body is provided with a first guide groove and a second guide groove. The first guide groove facilitates guiding the short pipe to the first support plate, and the second guide groove facilitates guiding the long pipe to the second support plate. An avoidance groove is provided between the first guide groove, the second guide groove and the clamp groove.

[0014] By adopting the above technical solution, the short pipe is guided to the first support plate along the first guide groove, and the long pipe is guided to the second support plate along the second guide groove, so as to guide the pipe body to be accurately positioned to the corresponding support plate and reduce the time for manual adjustment; at the same time, the clearance groove provides deformation space for the pipe body to bend, and avoids damage to the pipe body due to rigid constraints during press fitting.

[0015] Furthermore, the clamping assembly includes:

[0016] A spinning cylinder, wherein the spinning cylinder is mounted on a machine base;

[0017] An intermediate plate is mounted on the output shaft of the spinning cylinder.

[0018] The pressure head is detachably mounted on the intermediate plate by bolts and presses the tube body pressing end into the clamp groove. The pressure head also presses the tube body into the first guide groove or the second guide groove.

[0019] By adopting the above technical solution, the spinning cylinder drives the intermediate plate to press down, which in turn drives the press head to press the tube body end into the clamp groove. At the same time, the press head presses the tube body tail into the guide groove. The single cylinder simultaneously completes the fixing of the press end and the limiting of the tube body.

[0020] Furthermore, the end of the pressure head near the first guide groove and the second guide groove is a sawtooth-shaped pressure plate structure, and the side of the pressure head near the clamp groove is provided with an arc-shaped positioning groove for coarse positioning of the pipe body pressing end.

[0021] By adopting the above technical solution, the serrated pressure plate increases the friction with the tube surface, preventing the tube from slipping during pressing, and the arc-shaped positioning groove contains the expansion of the tube's pressing end diameter, avoiding crushing and deformation.

[0022] Furthermore, a guide assembly is provided on the side of the fixture body near the clamp groove, the guide assembly comprising:

[0023] A guide post, which is slidably mounted on the fixture body along the axis of the clamp groove;

[0024] A support guide block is provided on the end face of the guide post, and an arc-shaped groove is provided on the support guide block for guiding the valve body pressing end;

[0025] A compression spring, which is sleeved on the guide post and pushes the support guide block to slide closer to the valve fixture;

[0026] A limiting plate is disposed on the fixture body and is used to limit the maximum sliding distance of the guide column.

[0027] By adopting the above technical solution, the limiting plate prevents the guide column from falling out. When the valve body contacts the supporting guide block, the compression spring buffers the impact force, the guide column retracts along the axis, and the arc groove guides the valve body and the pipe body to be aligned, improving the coaxiality of the insertion and reducing the probability of valve body collision damage.

[0028] Furthermore, the fixture body is provided with an oil return box for collecting residual oil dripping during the pressing process, and the oil return box is provided with a discharge connector for discharging the collected residual oil.

[0029] By adopting the above technical solution, the residual oil dripping during pressing flows into the oil return box and converges to the discharge joint. The external pipeline connection joint collects the residual oil in a centralized manner, preventing oil pollution from reducing assembly accuracy.

[0030] Furthermore, the valve fixture includes:

[0031] A positioning seat is slidably disposed on the machine base along the direction of approaching or moving away from the integrated pipe fixture, and the positioning seat is provided with a positioning snap-fit ​​groove for snap-fit ​​positioning the valve body shape.

[0032] A pressure plate is set on the positioning seat and presses the top of the valve body in the positioning slot;

[0033] A capacitive sensor is mounted on the positioning seat and is used to detect whether the valve body is placed in the positioning groove.

[0034] By adopting the above technical solution, after the valve body is inserted into the positioning slot, the pressure plate presses down to fix the top of the valve body; the capacitive sensor detects the position signal within a specified distance, thereby ensuring that the valve body is fixed in the specified position of the positioning seat and ensuring the assembly accuracy between the valve body and the pipe body.

[0035] Furthermore, the base is provided with a protective cover for protecting the capacitive sensor.

[0036] By adopting the above technical solution, the protective cover encloses the tail of the capacitive sensor, blocking mechanical collisions and electromagnetic interference.

[0037] In summary, this application includes at least one of the following beneficial technical effects:

[0038] By placing the clamping end of the pipe body into the clamping groove and selecting the corresponding placement path according to the length of the pipe body, the first guide groove guides the short pipe to the first support plate and supports and fixes the short pipe, while the second guide groove guides the long pipe to the second support plate and supports and fixes the long pipe. Then, the pressure head is driven by the spinning cylinder to press the top of the pipe body. Then, the valve body is inserted into the positioning clamping groove and the capacitive sensor detects whether it is placed in place. Finally, the sliding component is driven to push the valve fixture to slide towards the integrated pipe fixture, thereby pressing the valve body into the pipe body, completing the assembly of the AKF valve assembly, and improving the efficiency of changing between two sets of AKF valve assemblies. Attached Figure Description

[0039] Figure 1 This is a structural schematic diagram of the AKF valve automatic press-fitting fixture of this application;

[0040] Figure 2 This is a structural schematic diagram of the integrated pipe fixture of this application, in which the clamping components are not shown;

[0041] Figure 3 yes Figure 2 Enlarged diagram of section A in the middle;

[0042] Figure 4 This is a schematic diagram of the pressure head structure of this application;

[0043] Figure 5 This is a schematic diagram of the valve fixture structure of this application, in which the protective cover is not shown.

[0044] Reference numerals: 1. Base; 2. Valve fixture; 21. Positioning seat; 211. Positioning clip groove; 22. Pressure plate; 23. Capacitive sensor; 3. Integrated pipe fixture; 31. Fixture body; 311. Clamp groove; 312. First guide groove; 313. Second guide groove; 314. Clearance groove; 32. First support plate; 33. Second support plate; 34. Pressing assembly; 341. Spinning cylinder; 342. Intermediate plate; 343. Pressure head; 344. Arc-shaped positioning groove; 4. Guide assembly; 41. Guide column; 42. Support guide block; 421. Arc-shaped groove; 43. Limiting plate; 5. Oil return box; 51. Discharge connector; 6. Protective cover; 7. Protective cover; 8. Drive sliding component. Detailed Implementation

[0045] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0046] This application discloses an automatic press-fitting fixture for AKF valves.

[0047] Reference Figure 1 An automatic press-fitting fixture for AKF valves includes a base 1, a valve fixture 2, an integrated pipe fixture 3, and a drive sliding component 8. The valve fixture 2 is slidably mounted on the base 1 and used to clamp and position the valve body. The integrated pipe fixture 3 is mounted on the base 1 and used to clamp and position the pipe body. The drive sliding component 8 is mounted on the base 1 and used to drive the valve fixture 2 to slide towards or away from the integrated pipe fixture 3. The integrated pipe fixture 3 can accommodate two pipes of different lengths.

[0048] Reference Figure 1 The base 1 is made of carbon steel plates. The outer side of the base 1 is fitted with sheet metal plates, and its interior is hollow and used for the distribution of cables and air pipes.

[0049] Reference Figure 1 and Figure 2 The integrated pipe fixture 3 includes a fixture body 31, a first support plate 32, a second support plate 33, and a clamping assembly 34. The fixture body 31 is fixedly installed on the base 1. A clamping groove 311 is provided on the fixture body 31. The bottom of the clamping groove 311 has a semi-circular groove structure, which facilitates the clamping and fixing of the bottom ends of the two types of pipes. The first support plate 32 is fixedly installed on the base 1 and is used to support the side of the short pipe away from the pressing end. The second support plate 33 is fixedly installed on the base 1 and is used to support the side of the long pipe away from the pressing end. In this embodiment, the second support plate 33 is also fixedly installed with a fixing groove for clamping and fixing the long pipe.

[0050] Reference Figure 2 and Figure 3The fixture body 31 is also provided with a first guide groove 312 and a second guide groove 313. The first guide groove 312 facilitates the guidance of the short pipe to the first support plate 32; the second guide groove 313 facilitates the guidance of the long pipe to the second support plate 33. An avoidance groove 314 is provided between the first guide groove 312 and the second guide groove 313 and the clamp groove 311. Since the long pipe and the short pipe share the clamp groove 311, the avoidance groove 314 allows the long pipe and the short pipe to bend freely. This allows the end of the short pipe away from the clamp groove 311 to bend into the first guide groove 312, and the end of the long pipe away from the clamp groove 311 to bend into the second guide groove 313. The avoidance groove 314 provides deformation space for the pipe body to bend, avoiding damage to the pipe body due to rigid constraints during press fitting.

[0051] Reference Figure 1 and Figure 4 The clamping assembly 34 is mounted on the machine base 1. The clamping assembly 34 is used to clamp or decompress the tube body in the clamp groove 311. The clamping assembly 34 includes a spinning cylinder 341, an intermediate plate 342, and a pressure head 343. The spinning cylinder 341 is fixedly mounted on the machine base 1. The intermediate plate 342 is fixedly mounted on the output shaft of the spinning cylinder 341 by bolts. The pressure head 343 is detachably mounted on the bottom of the intermediate plate 342 by bolts. The pressure head 343 is detachably mounted on the output shaft of the spinning cylinder 341 through the intermediate plate 342. When the bottom of the pressure head 343 spins towards the fixture body 31, it clamps the tube body end in the clamp groove 311. At the same time, the pressure head 343 also clamps the tube body in the first guide groove 312 and the second guide groove 313. A protective cover 6 for protecting the clamping assembly 34 is also fixedly mounted on the machine base 1.

[0052] Reference Figure 3 and Figure 4 The end of the pressure head 343 near the first guide groove 312 and the second guide groove 313 has a sawtooth-shaped pressure plate 22 structure, which improves the pressing effect of the pressure head 343 on the tube body in the first guide groove 312 or the second guide groove 313. The side of the pressure head 343 near the clamp groove 311 has an arc-shaped positioning groove 344 for coarse positioning of the tube body pressing end. The diameter of the arc-shaped positioning groove 344 is larger than the diameter of the tube body pressing end, so as to accommodate the increased diameter of the tube body pressing end after pressing. The pressure head 343 in this embodiment also has a groove corresponding to the avoidance groove 314.

[0053] Reference Figure 3A guide assembly 4 is provided on the side of the fixture body 31 near the clamp groove 311. The guide assembly 4 includes a guide post 41, a support guide block 42, a compression spring, and a limiting plate 43. A sliding hole is provided on the fixture body 31. The sliding hole is located at the bottom of the clamp groove 311, and the axis of the sliding hole is parallel to the axis of the clamp groove 311. The guide post 41 is slidably installed in the sliding hole. The support guide block 42 is fixedly installed on the end face of the guide post 41. An arc-shaped groove 421 for guiding the valve body pressing end is provided on the support guide block 42. The compression spring is sleeved on the guide post 41, and the other end of the compression spring abuts against the bottom of the sliding hole. The compression spring pushes the guide post 41 to slide closer to the valve fixture 2. The limiting plate 43 is fixedly installed on the fixture body 31 by bolts. The limiting plate 43 is used to limit the maximum sliding distance of the guide post 41.

[0054] Reference Figure 2 The fixture body 31 is provided with an oil return box 5, which is located at the bottom of the pipe pressing end. Since the valve body and the pressing end of the pipe body need to be coated with oil before pressing, residual oil will drip during the pressing process. The dripping residual oil is collected through the oil return box 5. At the same time, a discharge connector 51 is fixedly installed at the lowest point of the oil return box 5. The discharge connector 51 is convenient to connect with other pipes to discharge and store the residual oil collected in the oil return box 5.

[0055] Reference Figure 1 and Figure 5 The valve fixture 2 includes a positioning seat 21, a pressure plate 22, and a capacitive sensor 23. The positioning seat 21 is slidably mounted on the base 1 along the direction of approaching or moving away from the integrated pipe fixture 3. The positioning seat 21 has a positioning slot 211 for locking and positioning the valve body. The pressure plate 22 is fixedly mounted on the positioning seat 21 by bolts. The pressure plate 22 presses the top of the valve body in the positioning slot 211 to prevent the valve body from lifting up during the pressing process. The capacitive sensor 23 is fixedly mounted on the positioning seat 21. The capacitive sensor 23 is used to detect whether the valve body is placed in the positioning slot. A protective cover 7 is fixedly mounted on the base 1 to protect the capacitive sensor 23. The protective cover 7 protects the tail of the capacitive sensor 23, thereby reducing the probability of the capacitive sensor 23 being bumped. In this embodiment, the positioning seat 21 is slidably mounted on the base 1 via a slide rail. Since the valve body is made of non-metallic material, the capacitive sensor 23 is selected as a capacitive proximity sensor.

[0056] Reference Figures 1-5Specifically, the pressing end of the pipe is placed in the clamp groove 311. Then, depending on the length of the pipe, it is placed into either the first guide groove 312 or the second guide groove 313. Finally, the short pipe is guided onto the first support plate 32 through the first guide groove 312 and supported and fixed, or the long pipe is guided onto the second support plate 33 through the second guide groove 313 and supported and fixed. After placement, the spinning cylinder 341 drives the pressure head 343 to press the pipe onto the fixture body 31, thus completing the placement of the pipe. At the same time, the valve body is inserted into the positioning clamping groove 211 from the direction close to the integrated pipe fixture 3, and then the valve body is connected via a capacitive transmission. Sensor 23 detects whether the valve body is in place, thereby realizing the placement of the valve body; after both the pipe body and the valve body are placed, the drive sliding member 8 drives the positioning seat 21 to slide towards the integrated pipe fixture 3. The pressing end of the valve body first enters the arc-shaped groove 421 of the support guide block 42. Then, as the positioning seat 21 continues to slide, the compression spring is compressed, causing the guide post 41 to slide in the sliding hole, thereby guiding the valve body. Finally, the valve body is pressed into the pipe body, completing the assembly of the AKF valve assembly. The drive sliding member 8 can be any structure that can drive the positioning seat 21 to slide linearly. In this embodiment, the drive sliding member 8 is a cylinder.

[0057] The working principle of this application embodiment is as follows:

[0058] By placing the clamping end of the pipe body into the clamping groove 311 and selecting the corresponding placement path according to the length of the pipe body, the first guide groove 312 guides the short pipe to the first support plate 32 and supports and fixes the short pipe, and the second guide groove 313 guides the long pipe to the second support plate 33 and supports and fixes the long pipe. Then, the spinning cylinder 341 drives the pressure head 343 to press the top of the pipe body. Then, the valve body is inserted into the positioning clamping groove 211 and the capacitive sensor 23 detects whether it is placed in place. Finally, the sliding component 8 is driven to push the valve fixture 2 to slide towards the integrated pipe fixture 3, thereby pressing the valve body into the pipe body, completing the assembly of the AKF valve assembly, and improving the efficiency of changing the two sets of AKF valve assemblies.

[0059] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An AKF valve automatic press fitting tool, characterized by: The device includes a base (1), a valve fixture (2), an integrated pipe fixture (3), and a drive sliding component (8). The valve fixture (2) is slidably mounted on the base (1) and used for clamping and positioning the valve body. The integrated pipe fixture (3) is mounted on the base (1) and used for clamping and positioning the pipe body. The drive sliding component (8) is mounted on the base (1) and used to drive the valve fixture (2) to slide along the direction close to or away from the integrated pipe fixture (3). The integrated pipe fixture (3) can accommodate two pipe bodies of different lengths. The integrated pipe fixture (3) includes: The fixture body (31) is mounted on the machine base (1) and has a clamping groove (311). The clamping groove (311) facilitates the clamping and fixing of the two types of pipe ends. The first support plate (32) is mounted on the machine base (1) and is used to support the side of the short pipe away from the press-fit end; The second support plate (33) is mounted on the machine base (1) and is used to support the side of the long tube away from the press-fit end; A clamping assembly (34) is mounted on a base (1) and is used to clamp or decompress the pipe body in the clamp groove (311).

2. The AKF valve automatic press fitting tool according to claim 1, characterized in that: The fixture body (31) is also provided with a first guide groove (312) and a second guide groove (313). The first guide groove (312) facilitates the guidance of the short pipe to the first support plate (32), and the second guide groove (313) facilitates the guidance of the long pipe to the second support plate (33). An avoidance groove (314) is provided between the first guide groove (312) and the second guide groove (313) and the clamp groove (311).

3. The AKF valve automatic press fitting tool according to claim 2, characterized in that: The clamping assembly (34) includes: Spinning cylinder (341), said spinning cylinder (341) is mounted on the machine base (1); An intermediate plate (342) is disposed on the output shaft of the spinning cylinder (341); The pressure head (343) is detachably mounted on the intermediate plate (342) by bolts and presses the tube body pressing end into the clamp groove (311). The pressure head (343) also presses the tube body into the first guide groove (312) or the second guide groove (313).

4. The AKF valve automatic press fitting tool according to claim 3, characterized in that: The pressure head (343) has a sawtooth pressure plate (22) structure at one end near the first guide groove (312) and the second guide groove (313). The pressure head (343) has an arc-shaped positioning groove (344) for coarse positioning of the tube body pressing end on the side near the clamp groove (311).

5. The automatic press-fitting fixture for AKF valves according to claim 1, characterized in that: A guide assembly (4) is provided on the side of the fixture body (31) near the clamp groove (311), and the guide assembly (4) includes: Guide post (41), the guide post (41) is slidably disposed on the fixture body (31) along the axial direction of the clamp groove (311); A support guide block (42) is provided on the end face of the guide post (41), and an arc-shaped groove (421) is provided on the support guide block (42) for guiding the valve body pressing end. A compression spring is sleeved on the guide post (41) and pushes the support guide block (42) to slide closer to the valve fixture (2); A limiting plate (43) is provided on the fixture body (31) and is used to limit the maximum sliding distance of the guide post (41).

6. The automatic press-fitting fixture for AKF valves according to claim 1, characterized in that: The fixture body (31) is provided with an oil return box (5) for collecting residual oil dripping during the pressing process, and the oil return box (5) is provided with a discharge connector (51) for discharging the collected residual oil.

7. The automatic press-fitting fixture for an AKF valve according to claim 1, characterized in that: The valve fixture (2) includes: Positioning seat (21), the positioning seat (21) is slidably disposed on the base (1) in the direction of approaching or away from the integrated pipe fixture (3), and the positioning seat (21) is provided with a positioning snap-fit ​​groove (211) for snap-fit ​​positioning of the valve body shape. Pressure plate (22), which is set on positioning seat (21) and presses the top of valve body in positioning slot (211); A capacitive sensor (23) is mounted on the positioning seat (21) and is used to detect whether the valve body is placed in the positioning groove.

8. The automatic press-fitting fixture for an AKF valve according to claim 7, characterized in that: The base (1) is provided with a protective cover (7) for protecting the capacitive sensor (23).

Images