An online detection position adjustment mechanism for a wheel hub

Abstract

The present invention relates to an on-line detection position adjustment mechanism for a wheel hub, which comprises a frame. The frame adopts a rectangular frame structure. A chain conveying mechanism is arranged at a position close to the center on the frame. The chain conveying mechanism includes two parallel conveying beams arranged at a position close to the center on the frame and a conveying chain arranged on the conveying beams. A detection opening is formed in the middle of the right conveying beam, and a support rod is slidably connected to the detection opening in the front and back directions. The support rod is connected to a support rod cylinder. Lifting cylinders are respectively installed on the front and back sides of the detection opening between the two conveying beams. The tops of the two lifting cylinders are respectively connected to a support plate. Photoelectric sensors and reflectors are respectively installed in the middle of the two cross beams parallel to the conveying beams in the frame. Clamping linkage mechanisms are respectively installed at positions close to the left and right ends on the front and back cross beams of the frame. The present invention integrates the detection device and the production line, can realize 360° adjustment of the detection position, has high detection efficiency, and can avoid detection dead angles.

Description

Technical Field

[0001] The present invention belongs to the technical field of wheel hub detection equipment, and particularly relates to an on-line detection position adjustment mechanism for a wheel hub. Background Art

[0002] Automobile aluminum alloy wheel hubs are key load-bearing components during driving, and their quality is directly related to public traffic safety. Large-scale production of automobile aluminum alloy wheel hubs uses advanced die-casting production lines. To meet the requirements of production quality and efficiency simultaneously, it is often necessary to perform on-line rapid detection on various internal and external parts of the wheel hub. Advanced detection means mainly include machine vision appearance defect detection, dimension detection, and X-ray internal non-destructive detection of the wheel hub.

[0003] There are two common forms of existing wheel hub detection jigs:

[0004] One is mostly an off-line fixed bench. Through the synchronous contraction of four clamping wheels or clamping blocks, the inner rim or outer rim is clamped to achieve the clamping and fixation of the wheel hub. Detection facilities (such as industrial camera photographing facilities, X-ray radiography mechanisms) need to be adjusted in position and angle according to different detection positions. The entire detection facility occupies a large space, has a low detection efficiency, and there are dead corners where detection cannot be performed.

[0005] The other is on-line clamping in cooperation with a roller conveyor line. Four clamping wheels are respectively located in the gaps between the rollers. When the wheel hub runs to the middle position between the clamping wheels, the clamping wheels contract pairwise along the direction of the roller gaps to achieve the lifting and clamping of the wheel hub. The disadvantage of this solution is that the roller conveyor device at the bottom of the wheel hub interferes with the detection of the bottom and inner wall of the wheel hub. Summary of the Invention

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a configuration with a conveying device and a clamping and rotating device, which integrates the detection device and the production line, can achieve 360° adjustment of the detection position, not only has a high detection efficiency, but also can avoid detection dead corners and is convenient for realizing full-range detection.

[0007] The object of the present invention is achieved as follows: An on-line detection position adjustment mechanism for a wheel hub, which comprises a frame. The frame adopts a rectangular frame structure. A chain conveying mechanism is arranged at a position close to the center on the frame. The chain conveying mechanism includes two parallel conveying beams arranged at a position close to the center on the frame and a conveying chain arranged on the conveying beams. A detection opening is formed in the middle of the right conveying beam. A support rod is slidably connected to the detection opening in the front and back directions. The support rod is connected to a support rod cylinder. Lifting cylinders are respectively installed on the front and back sides of the detection opening between the two conveying beams. The tops of the two lifting cylinders are respectively connected to a support plate. Photoelectric sensors and reflectors are respectively installed in the middle parts of the two cross beams parallel to the conveying beams in the frame. The photoelectric sensors and reflectors are symmetrically arranged on the left and right cross beams of the frame. Clamping linkage mechanisms are respectively installed at positions close to the left and right ends on the front and back cross beams of the frame.

[0008] Further, the clamping linkage mechanism includes a Y-direction moving mechanism and an X-direction moving mechanism slidably connected to the Y-direction moving mechanism. Clamping mechanisms are respectively connected to the X-direction moving mechanism. A driving mechanism is connected to the Y-direction moving mechanism.

[0009] Further, the Y-direction moving mechanism includes four Y-direction guide rails arranged on the outer sides of the front and back cross beams of the frame and four Y-direction sliding tables slidably connected between the four Y-direction guide rails. The Y-direction sliding tables are composed of two Y-direction active sliding tables arranged at one end of the frame close to the reflector and two Y-direction driven sliding tables arranged at one end of the frame close to the photoelectric sensor.

[0010] Further, the X-direction moving mechanism includes four X-direction guide rails respectively arranged on the four Y-direction sliding tables and four X-direction sliding tables slidably connected between the four X-direction guide rails. The inner ends of the X-direction sliding tables are respectively connected to the clamping mechanisms. The outer ends of the X-direction sliding tables are respectively hinged with buffer connecting rods. The other ends of the buffer connecting rods are hinged on the frame.

[0011] Further, the driving mechanism includes a driving slider mounting plate and a driven slider mounting plate respectively connected to the bottoms of the Y-direction active sliding table and the Y-direction driven sliding table, and a driving rack and a driven rack parallel to the Y-direction guide rails respectively installed on the driving slider mounting plate and the driven slider mounting plate. The driven rack and the driving rack are respectively slidably connected to the rack guide blocks. A gear is meshed and connected between the driving rack and the driven rack inside the rack guide blocks. The two gears are respectively connected to a transmission shaft. The two ends of the transmission shaft are respectively connected to the frame through bearing seats. The transmission shaft is rotatably connected to the rack guide blocks. Clamping cylinders are respectively connected to the bottoms of the two driving slider mounting plates.

[0012] Further, the clamping mechanism adopts a clamping wheel set structure.

[0013] Furthermore, a speed reducer and a motor for driving the hub to rotate are respectively connected to the clamping wheel set.

[0014] Furthermore, the clamping wheel set includes a lifting wheel, an anti-slip wheel and a limiting wheel which are respectively key-connected to the output shaft of the speed reducer.

[0015] Furthermore, the diameter of the anti-slip wheel is smaller than that of the limiting wheel.

[0016] Furthermore, the side surface of the lifting wheel adopts a conical surface structure with the bottom end surface diameter larger than the top end surface diameter, and the diameter of the bottom end surface is larger than that of the anti-slip wheel.

[0017] Advantages of the present invention:

[0018] 1. In the present invention, a conveying mechanism is configured, which can integrate the detection facility and the production line, thereby improving the efficiency of on-line detection of the hub.

[0019] 2. Through the clamping wheel set, any adjustment of the hub detection position within 360° can be realized, thereby reducing the space occupied by the detection facility, avoiding detection dead angles at the same time, and facilitating omnidirectional detection.

[0020] 3. The synchronization mechanism in the present invention is realized through the combined movement of the cross slide table and the connecting rod. The inward movement trajectory of a single clamping wheel set is in the form of a parabola, and it decelerates automatically after approaching the hub to avoid violent impact.

[0021] 4. A dual hub lifting mechanism is configured in the present invention. During the clamping and detection process, the hub is separated from the conveying line by the support plate and the lifting wheel in the clamping wheel set respectively, which does not affect the operation of the line body. At the same time, it can avoid the interference between the clamping mechanism and the conveying mechanism caused by too small hub diameter, and is applicable to the detection of all standard size hubs.

[0022] 5. In the sprocket conveying mechanism of the present invention, a detectable opening that can be opened and closed is reserved: when the support rod is closed, it ensures that the hub will not fall from the notch during the transmission process; when the support rod is retracted, a transparent space is reserved at the bottom, which is convenient for the detection of the inner wall and the bottom.

[0023] 6. Buffer connecting rods are respectively hinged to the outer ends of the X-direction slide tables in the present invention. When there are irregular burrs at the edge of the hub contacted by a certain clamping wheel set, the clamping position of this clamping wheel set can be automatically fine-tuned, thereby avoiding the expansion of the center distance of the clamping wheel set due to the edge burrs during the rapid rotation drive of the hub, and further avoiding the hub from being stuck or bounced off. Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of an on-line detection position adjustment mechanism for a hub of the present invention.

[0025] Figure 2 It is a front view structural sectional view of an on-line detection position adjustment mechanism for a wheel hub of the present invention in a clamped state.

[0026] Figure 3 It is a schematic structural diagram of a clamping wheel set in an on-line detection position adjustment mechanism for a wheel hub of the present invention.

[0027] Figure 4 It is a schematic top view structural diagram of an on-line detection position adjustment mechanism for a wheel hub of the present invention in a reset state.

[0028] Figure 5 It is a schematic top view structural diagram of an on-line detection position adjustment mechanism for a wheel hub of the present invention in a clamped state.

[0029] Figure 6 It is a running track diagram of a clamping wheel set in an on-line detection position adjustment mechanism for a wheel hub of the present invention.

[0030] In the figure: 1. Frame; 2. Driven rack; 3. Gear; 4. Transfer beam; 5. Transfer chain; 6. Rack guide block; 7. Transmission shaft; 8. Lifting cylinder; 9. Wheel hub; 10. Reflective plate; 11. Y-direction active slide; 12. Motor; 13. Reducer; 14. Support rod cylinder; 15. Support rod; 16. Support plate; 17. Clamping cylinder; 18. Detection port; 19. Y-direction guide rail; 20. Y-direction driven slide; 21. X-direction slide; 22. Buffer connecting rod; 23. X-direction guide rail; 24. Photoelectric sensor; 25. Clamping wheel set; 26. Driven slider mounting plate; 27. Bearing seat; 28. Active rack; 29. Active slider mounting plate; 30. Lifting wheel; 31. Anti-slip wheel; 32. Limit wheel. Detailed implementation mode

[0031] The present invention will be further described below in conjunction with the accompanying drawings and the Y-direction guide rail.

[0032] Embodiment 1

[0033] As Figure 1-4As shown in the figure, an on-line detection position adjustment mechanism for a wheel hub includes a frame. The frame adopts a rectangular frame structure. A chain conveyor mechanism is arranged at a position close to the center on the frame. The chain conveyor mechanism includes two parallel conveying beams arranged at a position close to the center on the frame and a conveyor chain arranged on the conveying beams. A detection port is opened in the middle of the right conveying beam. A support rod is slidably connected to the front and back of the detection port. The support rod is connected to a support rod cylinder. Lifting cylinders are respectively installed on the front and back sides of the detection port between the two conveying beams. The tops of the two lifting cylinders are respectively connected to a support plate. Photoelectric sensors and reflectors are respectively installed in the middle of the two cross beams parallel to the conveying beams in the frame. The photoelectric sensors and reflectors are symmetrically arranged on the left and right cross beams of the frame. Clamping linkage mechanisms are respectively installed at positions close to the left and right ends on the front and back cross beams of the frame.

[0034] The clamping linkage mechanism includes a Y-direction moving mechanism and an X-direction moving mechanism slidably connected to the Y-direction moving mechanism. Clamping mechanisms are respectively connected to the X-direction moving mechanism. A driving mechanism is connected to the Y-direction moving mechanism.

[0035] The Y-direction moving mechanism includes four Y-direction guide rails arranged on the outer sides of the front and back cross beams of the frame and four Y-direction sliding platforms slidably connected between the four Y-direction guide rails. The Y-direction sliding platforms are composed of two Y-direction active sliding platforms arranged at one end of the frame close to the reflector and two Y-direction driven sliding platforms arranged at one end of the frame close to the photoelectric sensor.

[0036] The X-direction moving mechanism includes four X-direction guide rails respectively arranged on the four Y-direction sliding platforms and four X-direction sliding platforms slidably connected between the four X-direction guide rails. The inner ends of the X-direction sliding platforms are respectively connected to the clamping mechanisms. The outer ends of the X-direction sliding platforms are respectively hinged with buffer connecting rods. The other ends of the buffer connecting rods are hinged on the frame.

[0037] The driving mechanism includes a driving slider mounting plate and a driven slider mounting plate respectively connected to the bottoms of the Y-direction active sliding platform and the Y-direction driven sliding platform, and a driving rack and a driven rack parallel to the Y-direction guide rails respectively installed on the driving slider mounting plate and the driven slider mounting plate. The driven rack and the driving rack are respectively slidably connected to the rack guide blocks. A gear is meshingly connected between the driving rack and the driven rack inside the rack guide blocks. The two gears are respectively connected to a transmission shaft. The two ends of the transmission shaft are respectively connected to the frame through bearing seats. The transmission shaft is rotatably connected to the rack guide blocks. Clamping cylinders are respectively connected to the bottoms of the two driving slider mounting plates.

[0038] The clamping mechanism adopts a clamping wheel group structure.

[0039] A speed reducer and a motor for driving the rotation of the wheel hub are respectively connected to the clamping wheel group.

[0040] The clamping wheel set includes a lifting wheel, an anti-slip wheel, and a limit wheel that are respectively key-connected to the output shaft of the reduction gear.

[0041] The diameter of the anti-slip wheel is smaller than that of the limit wheel.

[0042] The side surface of the lifting wheel adopts a conical surface structure with the bottom end surface diameter larger than the top end surface diameter, and the diameter of its bottom end surface is larger than that of the anti-slip wheel.

[0043] When the present invention is in use, in the initial reset state, the clamping cylinder and the support rod cylinder are in the fully extended state, the lifting cylinder is in the fully retracted state, the detection notch in the middle of the conveying chain is filled by the support rod, the upper plane of the support plate is lower than the upper plane of the chain conveying mechanism, and the clamping wheel set composed of the lifting wheel, the anti-slip wheel, and the limit wheel is located on the outermost side, and its Y-direction spacing can allow hub wheels of various diameters to pass through; when the hub wheel on the production line enters the central area through the chain conveying mechanism and the photoelectric sensor confirms that the hub wheel is in place, the lifting cylinder extends, the support plate vertically lifts the hub wheel away from the conveying mechanism, and then the support rod cylinder and the clamping cylinder contract simultaneously. The support rod cylinder drives the support rod to retract completely, leaving the detection port of the conveying mechanism. The two clamping cylinders respectively drive the two Y-direction active sliders to move inward. Under the linkage of the synchronous mechanism composed of the active rack, the driven rack, and the gear transmission shaft, the two moving sliders move inward synchronously. At the same time, the four X-direction sliders move inward synchronously under the traction of the buffer connecting rod. The clamping wheel set composed of the lifting wheel, the anti-slip wheel, and the limit wheel moves inward synchronously to squeeze the hub wheel. At this time, the lower edge of the conical surface on the side of the lifting wheel is lower than the lower surface of the hub wheel. Under the pressure transmitted by the clamping cylinder, the hub wheel is lifted to the root of the anti-slip wheel. Then, the motor and the reduction gear drive the clamping wheel set to rotate according to the input signal, thereby driving the hub wheel to rotate. After the detection is completed, the clamping cylinder and the support rod cylinder are reset simultaneously, the hub wheel falls on the support plate, and at the same time, the detection port in the middle of the chain conveying mechanism is closed. Then the lifting cylinder is reset, and the hub wheel falls on the chain conveying mechanism and continues to be transported forward.

Claims

1. An on-line detection position adjustment mechanism for a wheel hub, which comprises a frame, and is characterized in that: The frame adopts a rectangular frame structure. A chain conveying mechanism is arranged at a position close to the center on the frame. The chain conveying mechanism includes two parallel conveying beams arranged at a position close to the center on the frame and a conveying chain arranged on the conveying beams. A detection port is opened in the middle of the right conveying beam. A support rod is slidably connected to the detection port in the front-back direction. The support rod is connected to a support rod cylinder. Lifting cylinders are respectively installed on the front and rear sides of the detection port between the two conveying beams. The tops of the two lifting cylinders are respectively connected to a support plate. Photoelectric sensors and reflectors are respectively installed in the middle of the two cross beams parallel to the conveying beams in the frame. The photoelectric sensors and reflectors are symmetrically arranged on the left and right cross beams of the frame. Clamping linkage mechanisms are respectively installed at positions close to the left and right ends on the front and rear cross beams of the frame; The clamping linkage mechanism includes a Y-direction moving mechanism and an X-direction moving mechanism slidably connected to the Y-direction moving mechanism. Clamping mechanisms are respectively connected to the X-direction moving mechanism. A driving mechanism is connected to the Y-direction moving mechanism; the Y-direction moving mechanism includes four Y-direction guide rails arranged on the outer sides of the front and rear cross beams of the frame and four Y-direction sliding tables slidably connected between the four Y-direction guide rails. The Y-direction sliding tables are composed of two Y-direction active sliding tables arranged at one end of the frame close to the reflector and two Y-direction driven sliding tables arranged at one end of the frame close to the photoelectric sensor; the X-direction moving mechanism includes four X-direction guide rails respectively arranged on the four Y-direction sliding tables and four X-direction sliding tables slidably connected between the four X-direction guide rails. The inner ends of the X-direction sliding tables are respectively connected to the clamping mechanisms. The outer ends of the X-direction sliding tables are respectively hinged to a buffer connecting rod. The other end of the buffer connecting rod is hinged to the frame; The clamping mechanism adopts a clamping wheel set structure; a speed reducer and a motor for driving the hub to rotate are respectively connected to the clamping wheel set.

2. The hub on-line detection position adjustment mechanism according to claim 1, wherein: The driving mechanism includes a driving slider mounting plate and a driven slider mounting plate respectively connected to the bottoms of the Y-direction active sliding table and the Y-direction driven sliding table, and a driving rack and a driven rack parallel to the Y-direction guide rail respectively installed on the driving slider mounting plate and the driven slider mounting plate. The driven rack and the driving rack are respectively slidably connected to the rack guiding block. A gear is meshingly connected between the driving rack and the driven rack inside the rack guiding block. The two gears are respectively connected to a transmission shaft. The two ends of the transmission shaft are respectively connected to the frame through bearing seats. The transmission shaft is rotatably connected to the rack guiding block. Clamping cylinders are respectively connected to the bottoms of the two driving slider mounting plates.

3. The hub on-line detection position adjustment mechanism according to claim 1, characterized in that: The clamping wheel set includes a lifting wheel, an anti-slip wheel and a limit wheel respectively key-connected to the output shaft of the speed reducer.

4. The on-line inspection position adjustment mechanism for the wheel hub according to claim 3, characterized in that: The diameter of the anti-slip wheel is smaller than that of the limit wheel.

5. The hub online detection position adjustment mechanism according to claim 4, characterized in that: The side surface of the lifting wheel adopts a conical surface structure with the bottom end surface diameter larger than the top end surface diameter, and the diameter of its bottom end surface is larger than that of the anti-slip wheel.

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