Evaporator cam disc testing fixture

Abstract

The invention relates to the related technical field of cam detection, and discloses an evaporator cam disc detection tool, through rotation of a cam quality detection disc, a constant force clamping block is utilized to carry out virtual clamping on the cam quality detection disc from the center, the clamping force is small, and a center hole of a to-be-detected cam disc is enabled to coincide with a center alignment hole of the cam quality detection disc. Once the defect of uneven pouring occurs during pouring of the to-be-detected cam disc, the gravity center of the to-be-detected cam disc deviates from a center hole of the to-be-detected cam disc, so that centrifugal force occurs during rotation of the to-be-detected cam disc, once the defect exceeds the range of technological requirements, the centrifugal force exceeds the clamping force of the constant force clamping block, and then the constant force clamping block is pressed down; and the unqualified to-be-detected cam disc can be thrown out, so that the pouring defect detection and quick disassembly of the to-be-detected cam disc are realized.

Description

Technical Field

[0001] The invention relates to the technical field related to cam detection, and in particular to an evaporator cam disc inspection tool. Background Art

[0002] The evaporator cam disc is an indispensable part of the evaporator, and its processing quality directly affects the overall performance of the evaporator and the operating efficiency of the air-conditioning system. The evaporator cam disc is usually made by injection molding, has a disc-shaped structure, and is provided with an arc-shaped cam disc track. These structural features play a key role in the installation and operation of the cam disc and the evaporator housing. However, during the cam disc processing, if the cam disc track curve is unqualified, it will seriously affect the installation accuracy and normal working performance of the cam disc, which may lead to a decline in the performance of the air-conditioning system or even failure. Therefore, in order to ensure the processing quality of the evaporator cam disc, it is necessary to design a special inspection fixture to detect the processing accuracy of the housing mounting hole and the cam disc track.

[0003] Traditional testing equipment, such as the automobile air-conditioning evaporator cam plate inspection fixture with publication number CN103557764B, uses a fixture to clamp and then perform contour detection on the cam. This is not only complicated to operate, but also has low detection efficiency. It is difficult to meet the high requirements for product quality and detection speed in evaporator production. At the same time, traditional testing equipment can only be used for cam contour detection, but cannot be used for detection of the casting quality and processing quality of the cam. Summary of the invention

[0004] The object of the present invention is to provide an evaporator cam plate inspection fixture to solve the problems raised in the above background technology that the current traditional inspection equipment is complicated to operate, has low inspection efficiency, and cannot be applied to dynamic balance inspection of the cam.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an evaporator cam disc inspection fixture, comprising a fixture frame, a first support frame is fixedly connected to the fixture frame, a cam quality inspection disc is rotatably connected to the first support frame, a double-headed motor is fixedly installed on the fixture frame, a first pulley is fixedly connected to the lower end of the output shaft of the double-headed motor, a second pulley is fixedly connected to the lower side of the cam quality inspection disc, the first pulley and the second pulley are connected through a synchronous belt drive, and a cam disc to be inspected is placed on the cam quality inspection disc; The inspection fixture frame is fixedly connected to a second support frame, the second support frame is located above the first support frame, the second support frame is rotatably connected to a contour comparison disk, the upper end of the output shaft of the double-headed motor is fixedly connected to a third pulley, and the lower end of the contour comparison disk is fixedly connected to a fourth pulley; The inspection tool frame is provided with a contour detection mechanism, and the contour detection mechanism includes a hollow tube, the hollow tube is fixedly connected to the inspection tool frame, a push spring is provided in the hollow tube, a telescopic connecting rod is also inserted in the hollow tube, the telescopic connecting rod is located outside the push spring, the end of the telescopic connecting rod is fixedly connected to a vertical rod, the upper end of the vertical rod is rotatably connected to a first magnetic wheel, and the lower end of the vertical rod is rotatably connected to a second magnetic wheel.

[0006] Furthermore, a large number of rubber rollers are densely arranged on the cam quality inspection disk, and the axes of the large number of rubber rollers are tangent to the concentric circles of the cam quality inspection disk, so that the cam disk to be inspected can be more easily separated from the cam quality inspection disk.

[0007] Furthermore, the contour of the contour control disk is consistent with the contour of a standard cam disk, and is used to perform contour detection on the cam disk to be inspected.

[0008] Furthermore, the cam disk to be inspected is provided with multiple groups of positioning holes, the contour control disk is provided with at least two positioning pins, and the vertical projections of the positioning pins coincide with different corresponding positioning holes of the cam disk to be inspected, and the positioning pin sleeve is provided with a reset spring, which pushes the positioning pin upward, thereby facilitating the positioning of the clamping position and angle of the cam disk to be inspected.

[0009] Furthermore, the contour detection mechanism is provided with at least two groups, and each group of contour detection mechanisms includes at least two groups of hollow tubes, push springs and telescopic connecting rods, and the multiple groups of telescopic connecting rods are parallel to each other, and the vertical rod is perpendicular to the cam quality inspection disk and the contour comparison disk, so that the contour of the contour comparison disk is used to detect the contour of the cam disk to be inspected.

[0010] Furthermore, the first magnetic wheel and the second magnetic wheel in the contour detection mechanism are both permanent magnets, the first magnetic wheel is tightly attached to the edge of the contour comparison disk, and the second magnetic wheel is tightly attached to the edge of the cam disk to be inspected, so that the edges of the contour comparison disk and the cam disk to be inspected are always tightly attached to the first magnetic wheel and the second magnetic wheel.

[0011] Furthermore, a center hole is opened at the center of the cam disc to be inspected, and a center alignment hole is opened at the center of the cam quality inspection disc, and the center hole and the center alignment hole correspond to each other.

[0012] Furthermore, a center sleeve is rotatably connected in the center alignment hole, and a fixed force clamping block is rotatably connected to the top end of the center sleeve through a rotating shaft. The fixed force clamping blocks are provided in four groups, and the fixed force clamping blocks are tightly attached to the inner wall of the center hole of the cam disk to be inspected, and the fixed force clamping block tube is rotatably connected to a push-pull connecting rod through the rotating shaft, and the push-pull connecting rod is rotatably connected to the center rod through the rotating shaft, and a center rod positioning mechanism is provided between the center rod and the center sleeve, and an emergency stop switch is provided under the inspection fixture frame, and the emergency stop switch controls the on and off of the main circuit of the double-headed motor. The emergency stop switch is located at the lower end of the center rod, so that the double-headed motor can be quickly turned off after the cam disk to be inspected deviates from the center.

[0013] Furthermore, the center rod positioning mechanism is cross-shaped and has four groups arranged around the center rod, and the center rod positioning mechanism includes a first rotating shaft, and the center rod is rotatably connected to a spring tube via the first rotating shaft, a pressure spring is arranged in the spring tube, a telescopic rod is arranged on the outer side of the pressure spring, and a second rotating shaft is arranged on the inner wall of the center sleeve, the end of the telescopic rod is rotatably connected to the second rotating shaft, and the second rotating shaft is located at the middle point of the upper and lower movement limit heights of the first rotating shaft, thereby pushing the center rod to move and position.

[0014] Furthermore, the center rod is fixedly connected to a brake curved rod, and the end of the brake curved rod is fixedly connected to a brake block, and the brake block is located above the edge of the cam quality inspection disk, so as to quickly stop the cam quality inspection disk after the cam disk to be inspected deviates from the center.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides an evaporator cam disc inspection tool, which adopts the rotation of a cam quality inspection disc and a contour comparison disc, and cooperates with a contour detection mechanism. When the cam disc to be inspected rotates, a first magnetic wheel and a second magnetic wheel are respectively pressed against the edges of the cam quality inspection disc and the cam disc to be inspected. In this way, if the contour of the cam disc to be inspected does not conform to the standard contour of the contour comparison disc, the second magnetic wheel will push or pull the cam disc to be inspected, so that the center of gravity of the cam disc to be inspected deviates from the rotation center of the cam quality inspection disc. In this way, centrifugal force will be generated when the cam disc to be inspected rotates, and unqualified cam discs to be inspected will be thrown out, thereby realizing rapid clamping, rapid contour detection and rapid disassembly of the cam disc to be inspected.

[0016] 2. The present invention provides an evaporator cam disc inspection fixture. Through the rotation of the cam inspection disc, the cam inspection disc is virtually clamped from the center by a fixed force clamping block. The clamping force is relatively small. Once the center of gravity of the cam disc to be inspected deviates from its center hole, the cam disc will be thrown out, thereby introducing center of gravity detection in the inspection of the cam disc. Once the contour of the cam disc is unqualified, or there is a defect of uneven casting during casting, or there is a problem of unqualified size during processing, its center of gravity will deviate from the design center of gravity, and all of them will be detected. Multiple defects can be detected at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the appearance structure of the present invention; Figure 2 This is a schematic diagram of the clamping structure of the cam disc to be inspected according to the present invention; Figure 3 It is a side view structural schematic diagram of the present invention; Figure 4 This is a schematic diagram of the structure of the cam quality inspection disk of the present invention; Figure 5 This is a schematic diagram of the structure of the cam disc to be inspected according to the present invention; Figure 6 This is a schematic diagram of the clamping structure of the fixed force clamping block of the present invention; Figure 7 It is a schematic diagram of the loosening structure of the fixed force clamping block of the present invention.

[0018] Numbers in the figure: 1, inspection frame; 2, first support frame; 3, cam inspection disk; 301, rubber roller; 302, center alignment hole; 4, double-headed motor; 5, first pulley; 6, second pulley; 7, cam disk to be inspected; 701, positioning hole; 702, center hole; 8, second support frame; 9, contour comparison disk; 901, positioning pin; 902, reset spring; 10, third pulley; 11, fourth pulley; 12, contour detection mechanism; 1201, hollow tube; 120 2. Push spring; 1203. Telescopic connecting rod; 1204. Vertical rod; 1205. First magnetic wheel; 1206. Second magnetic wheel; 13. Center sleeve; 14. Fixed force clamping block; 15. Push-pull connecting rod; 16. Center rod; 17. Center rod positioning mechanism; 1701. First rotating shaft; 1702. Spring tube; 1703. Pressure spring; 1704. Telescopic rod; 1705. Second rotating shaft; 18. Emergency stop switch; 19. Brake bending rod; 20. Brake block. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings.

[0021] Combination Figure 1 - Figure 4A cam plate inspection tool for an evaporator includes a inspection tool frame 1, a first support frame 2 is fixedly connected to the inspection tool frame 1, a cam inspection plate 3 is rotatably connected to the first support frame 2, a cam plate 7 to be inspected is placed on the cam inspection plate 3, a large number of rubber rollers 301 are densely arranged on the cam inspection plate 3, and the axes of the large number of rubber rollers 301 are tangent to the concentric circles of the cam inspection plate 3, so that the tangential friction force of the rubber roller 301 on the cam plate 7 to be inspected can be increased, and the radial friction force of the rubber roller 301 on the cam plate 7 to be inspected can be reduced, so that when the cam inspection plate 3 rotates, the cam plate 7 to be inspected is not easy to slip, and when the cam inspection plate 7 to be inspected deviates from the center, it is more likely to be thrown out, so that the detection accuracy is higher.

[0022] See also Figure 2 and Figure 3 A double-headed motor 4 is fixedly installed on the inspection fixture frame 1, and a first pulley 5 is fixedly connected to the lower end of the output shaft of the double-headed motor 4, and a second pulley 6 is fixedly connected to the bottom of the cam inspection disk 3, and the first pulley 5 and the second pulley 6 are connected through a synchronous belt transmission. A second support frame 8 is fixedly connected to the inspection fixture frame 1, and the second support frame 8 is located above the first support frame 2. A contour comparison disk 9 is rotatably connected to the second support frame 8, and the contour of the contour comparison disk 9 is consistent with the contour of the standard cam disk. A third pulley 10 is fixedly connected to the upper end of the output shaft of the double-headed motor 4, and a fourth pulley 11 is fixedly connected to the bottom of the contour comparison disk 9, so that the double-headed motor 4 can drive the cam inspection disk 3 and the contour comparison disk 9 to rotate synchronously.

[0023] like Figure 3 As shown, a contour detection mechanism 12 is provided on the inspection tool frame 1, and the contour detection mechanism 12 includes a hollow tube 1201, the hollow tube 1201 is fixedly connected to the inspection tool frame 1, a push spring 1202 is provided in the hollow tube 1201, a telescopic connecting rod 1203 is also inserted in the hollow tube 1201, the telescopic connecting rod 1203 is located outside the push spring 1202, and the end of the telescopic connecting rod 1203 is fixedly connected to a vertical rod 1204, the upper end of the vertical rod 1204 is rotatably connected to a first magnetic wheel 1205, and the lower end of the vertical rod 1204 is rotatably connected to a second magnetic wheel 1206, so that when the cam quality inspection disk 3 and the contour comparison disk 9 rotate synchronously, the push spring 1202 pushes the first magnetic wheel 1205 to be close to the edge of the contour comparison disk 9, and when the contour comparison disk 9 rotates, the first magnetic wheel 1205 will fit the contour of the contour comparison disk 9.

[0024] Each group of contour detection mechanism 12 includes at least two groups of hollow tubes 1201, push springs 1202 and telescopic links 1203, and the multiple groups of telescopic links 1203 are parallel to each other, and the vertical rod 1204 is perpendicular to the cam quality inspection disk 3 and the contour comparison disk 9. In this way, the second magnetic wheel 1206 will also fit the contour of the contour comparison disk 9. Once the contour of the cam disk 7 to be inspected protrudes from the contour of the contour comparison disk 9, the second magnetic wheel 1206 will push the cam disk 7 to be inspected outward, so that the center of gravity of the cam disk 7 to be inspected deviates from its rotation center, and then the unqualified cam disk 7 to be inspected is thrown out by the centrifugal force.

[0025] The first magnetic wheel 1205 and the second magnetic wheel 1206 in the contour detection mechanism 12 are both permanent magnets. The first magnetic wheel 1205 is tightly attached to the edge of the contour comparison disk 9, and the second magnetic wheel 1206 is tightly attached to the edge of the cam disk 7 to be inspected. In this way, when the contour of the cam disk 7 to be inspected is concave and inconsistent with the contour comparison disk 9, the second magnetic wheel 1206 can pull the cam disk 7 to be inspected by magnetic force, so that the center of gravity of the cam disk 7 to be inspected deviates from its rotation center, and then the unqualified cam disk 7 to be inspected is thrown out by centrifugal force.

[0026] like Figure 5 As shown, the cam disc 7 to be inspected is provided with multiple groups of positioning holes 701, and the contour comparison disc 9 is provided with at least two positioning pins 901, and the vertical projection of the positioning pins 901 coincides with the different corresponding positioning holes 701 of the cam disc 7 to be inspected, and the positioning pins 901 are provided with a reset spring 902 on the outer sleeve, so that when the cam disc 7 to be inspected is clamped, the positioning pins 901 can be pressed down and inserted into the corresponding positioning holes 701 on the cam disc 7 to be inspected. The contour detection mechanism 12 is provided with at least two groups, and the two positioning pins 901 can realize the precise positioning of the cam disc 7 to be inspected. After completion, the reset spring 902 pushes the positioning pins 901 upward to exit the positioning holes 701, which will not affect the rotation of the contour comparison disc 9.

[0027] A center hole 702 is provided at the center of the cam disk 7 to be inspected, and a center alignment hole 302 is provided at the center of the cam inspection disk 3. The center hole 702 corresponds to the center alignment hole 302, and a center sleeve 13 is rotatably connected in the center alignment hole 302. A fixed force clamping block 14 is rotatably connected to the top of the center sleeve 13 through a rotating shaft. There are four groups of fixed force clamping blocks 14, and the fixed force clamping blocks 14 are close to the inner wall of the center hole 702 of the cam disk 7 to be inspected. The fixed force clamping block 14 is rotatably connected to a push-pull connecting rod 15 through the rotating shaft. The push-pull connecting rod 15 is rotatably connected to a center rod 16 through the rotating shaft. A center rod positioning mechanism 17 is provided between the center rod 16 and the center sleeve 13. In this way, when the cam disk 7 to be inspected is pushed or pulled by the second magnetic wheel 1206, or the second magnetic wheel 1206 is unevenly cast, causing its center of gravity to deviate from the rotation center, centrifugal force will be generated to press down the fixed force clamping block 14, thereby causing the cam disk 7 to be inspected to deviate from the center.

[0028] like Figure 6 and Figure 7 As shown, the center rod positioning mechanism 17 is cross-shaped and has four groups arranged around the center rod 16. The center rod positioning mechanism 17 includes a first rotating shaft 1701. The center rod 16 is rotatably connected to a spring tube 1702 through the first rotating shaft 1701. A pressure spring 1703 is arranged in the spring tube 1702. A telescopic rod 1704 is arranged on the outer side of the pressure spring 1703. A second rotating shaft 1705 is arranged on the inner wall of the center sleeve 13. The end of the telescopic rod 1704 is rotatably connected to the second rotating shaft 1705, and the second rotating shaft 1705 is located at the middle point of the upper and lower movement limit height of the first rotating shaft 1701. In this way, when the first rotating shaft 1701 moves downward to the same height as the second rotating shaft 1705, the clamping force of the fixed force clamping block 14 disappears instantly to avoid affecting the movement of the cam disk 7 to be inspected. In this way, the clamping force of the fixed force clamping block 14 is also determined by the elastic force of the pressure spring 1703.

[0029] An emergency stop switch 18 is provided below the inspection fixture frame 1, and the emergency stop switch 18 controls the on-off of the main circuit of the double-headed motor 4. The emergency stop switch 18 is located at the lower end of the center rod 16. In addition, the center rod 16 is fixedly connected to a brake bent rod 19, and a brake block 20 is fixedly connected to the end of the brake bent rod 19. The brake block 20 is located above the edge of the cam inspection disk 3. In this way, when the cam disk 7 to be inspected deviates slightly from the center and presses the fixed force clamping block 14 down, the center rod 16 will push and close the emergency stop switch 18, stop the power supply to the double-headed motor 4, and make the cam inspection disk 3 lose the power to rotate. At the same time, the cam inspection disk 3 will also be pressed down and contact the cam inspection disk 3 to brake, so that the cam inspection disk 3 stops quickly, preventing the subsequent rotation of the cam inspection disk 3 from causing the centrifugal force of the cam disk 7 to be inspected to be too large, causing the cam disk 7 to be inspected to be quickly thrown out and causing danger.

[0030] Working principle: When an evaporator cam disc inspection fixture is working, first place the cam disc 7 to be inspected on the cam quality inspection disc 3, and make the fixed force clamping block 14 clamped on the inner wall of the center hole 702 of the cam disc 7 to be inspected. At the same time, press the positioning pin 901 on the contour reference disc 9 and insert it into the corresponding positioning hole 701 on the cam disc 7 to be inspected, so that the angle of the cam disc 7 to be inspected is consistent with the angle of the contour reference disc 9.

[0031] Then start the double-headed motor 4 to drive the cam inspection disk 3 and the contour comparison disk 9 to rotate synchronously. Since the axis of the rubber roller 301 of the cam inspection disk 3 is tangent to the concentric circle of the cam inspection disk 3, the tangential friction force of the rubber roller 301 on the cam disk 7 to be inspected can be increased to prevent the cam disk 7 to be inspected from slipping when rotating. At the same time, the radial friction force of the rubber roller 301 on the cam disk 7 to be inspected is reduced, so that when the cam disk 7 to be inspected deviates from the center, it is easier to be thrown out.

[0032] In this way, once the cam disc 7 to be tested is insufficiently cast, the center of gravity will deviate from its rotation center, thereby generating centrifugal force. When the error of the cam disc 7 to be tested exceeds the allowable range of its process, the clamping force of the cam disc 7 to be tested will be greater than the clamping force of the fixed force clamping block 14, thereby pushing the fixed force clamping block 14 to rotate around the rotating axis and retract into the center alignment hole 302, thereby causing the cam disc 7 to be thrown out, thereby realizing the dynamic balance detection of the moving cam disc.

[0033] When the contour comparison disk 9 rotates, the first magnetic wheel 1205 is pushed by the push spring 1202 to fit closely to the contour of the contour comparison disk 9, and the second magnetic wheel 1206 is simultaneously pushed closely to the edge of the cam disk 7 to be inspected. In this way, when the contour of the cam disk 7 to be inspected is concave and inconsistent with the contour comparison disk 9, the second magnetic wheel 1206 can pull the cam disk 7 to be inspected by magnetic force, so that the center of gravity of the cam disk 7 to be inspected deviates from its rotation center, and then the unqualified cam disk 7 to be inspected is thrown out by centrifugal force. When the contour of the cam disk 7 to be inspected protrudes from the contour of the contour comparison disk 9, the second magnetic wheel 1206 will push the cam disk 7 to be inspected outward, so that the center of gravity of the cam disk 7 to be inspected deviates from its rotation center, and then the unqualified cam disk 7 to be inspected is thrown out by centrifugal force, thereby realizing contour detection.

[0034] In addition, when the cam disk 7 to be inspected deviates slightly from the center and the fixed force clamping block 14 is pressed down, the center rod 16 will turn off the emergency stop switch 18, interrupting the power supply of the double-headed motor 4. At the same time, the brake block 20 will also press down to brake the cam inspection disk 3 to make it stop as soon as possible. This can prevent the centrifugal force of the cam disk 7 to be inspected from being too large and being thrown out to cause danger.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An evaporator cam plate inspection fixture, comprising a inspection fixture frame (1), characterized in that: The inspection fixture frame (1) is fixedly connected to a first support frame (2), a cam quality inspection disk (3) is rotatably connected to the first support frame (2), a double-headed motor (4) is fixedly mounted on the inspection fixture frame (1), a first pulley (5) is fixedly connected to the lower end of the output shaft of the double-headed motor (4), a second pulley (6) is fixedly connected below the cam quality inspection disk (3), the first pulley (5) and the second pulley (6) are connected via a synchronous belt drive, and a cam disk (7) to be inspected is placed on the cam quality inspection disk (3); The inspection fixture frame (1) is fixedly connected to a second support frame (8), the second support frame (8) is located above the first support frame (2), a contour comparison disk (9) is rotatably connected to the second support frame (8), a third pulley (10) is fixedly connected to the upper end of the output shaft of the double-headed motor (4), and a fourth pulley (11) is fixedly connected to the lower side of the contour comparison disk (9); The inspection tool frame (1) is provided with a contour detection mechanism (12), the contour detection mechanism (12) comprising a hollow tube (1201), the hollow tube (1201) being fixedly connected to the inspection tool frame (1), a push spring (1202) being provided in the hollow tube (1201), a telescopic connecting rod (1203) being inserted into the hollow tube (1201), the telescopic connecting rod (1203) being located outside the push spring (1202), a vertical rod (1204) being fixedly connected at the end thereof, a first magnetic wheel (1205) being rotatably connected to the upper end of the vertical rod (1204), and a second magnetic wheel (1206) being rotatably connected to the lower end of the vertical rod (1204).

2. The evaporator cam plate inspection fixture according to claim 1, characterized in that: A large number of rubber rollers (301) are densely arranged on the cam quality inspection disk (3), and the axes of the large number of rubber rollers (301) are tangent to the concentric circles of the cam quality inspection disk (3).

3. The evaporator cam plate inspection fixture according to claim 1, characterized in that: The profile of the profile comparison disc (9) is consistent with the profile of a standard cam disc.

4. The evaporator cam plate inspection fixture according to claim 1, characterized in that: The cam disc to be inspected (7) is provided with a plurality of groups of positioning holes (701), the contour comparison disc (9) is provided with at least two positioning pins (901), and the vertical projections of the positioning pins (901) coincide with different corresponding positioning holes (701) of the cam disc to be inspected (7), and the outer sleeve of the positioning pin (901) is provided with a return spring (902), and the return spring (902) pushes the positioning pin (901) upward.

5. The evaporator cam plate inspection fixture according to claim 1, characterized in that: At least two groups of the contour detection mechanisms (12) are provided, and each group of the contour detection mechanisms (12) includes at least two groups of hollow tubes (1201), a push spring (1202) and a telescopic connecting rod (1203), and the multiple groups of telescopic connecting rods (1203) are parallel to each other, and the vertical rod (1204) is perpendicular to the cam quality inspection disk (3) and the contour comparison disk (9).

6. The evaporator cam plate inspection fixture according to claim 1, characterized in that: The first magnetic wheel (1205) and the second magnetic wheel (1206) in the contour detection mechanism (12) are both permanent magnets; the first magnetic wheel (1205) is in close contact with the edge of the contour comparison disk (9); and the second magnetic wheel (1206) is in close contact with the edge of the cam disk (7) to be detected.

7. The evaporator cam plate inspection fixture according to claim 1, characterized in that: The center of the cam disc to be inspected (7) is provided with a center hole (702), and the center of the cam quality inspection disc (3) is provided with a center alignment hole (302), and the center hole (702) corresponds to the center alignment hole (302).

8. The evaporator cam plate inspection fixture according to claim 7, characterized in that: A center sleeve (13) is rotatably connected in the center alignment hole (302), and a fixed force clamping block (14) is rotatably connected to the top of the center sleeve (13) via a rotating shaft. Four groups of the fixed force clamping blocks (14) are provided, and the fixed force clamping blocks (14) are closely attached to the inner wall of the center hole (702) of the cam disc (7) to be inspected. The fixed force clamping block (14) is rotatably connected to a push-pull connecting rod (15) via a rotating shaft, and the push-pull connecting rod (15) is rotatably connected to a center rod (16) via a rotating shaft. A center rod positioning mechanism (17) is provided between the center rod (16) and the center sleeve (13). An emergency stop switch (18) is provided below the inspection fixture frame (1), and the emergency stop switch (18) controls the on / off of the main circuit of the double-headed motor (4). The emergency stop switch (18) is located at the lower end of the center rod (16).

9. The evaporator cam plate inspection fixture according to claim 8, characterized in that: The center rod positioning mechanism (17) is cross-shaped and has four groups arranged around the center rod (16). The center rod positioning mechanism (17) comprises a first rotating shaft (1701). The center rod (16) is rotatably connected to a spring tube (1702) via the first rotating shaft (1701). A pressure spring (1703) is arranged inside the spring tube (1702). A telescopic rod (1704) is arranged outside the pressure spring (1703). A second rotating shaft (1705) is arranged on the inner wall of the center sleeve (13). The end of the telescopic rod (1704) is rotatably connected to the second rotating shaft (1705), and the second rotating shaft (1705) is located at the middle point of the upper and lower movement limit height of the first rotating shaft (1701).

10. The evaporator cam plate inspection fixture according to claim 8, characterized in that: The central rod (16) is fixedly connected to a brake curved rod (19), and the end of the brake curved rod (19) is fixedly connected to a brake block (20), and the brake block (20) is located above the edge of the cam quality inspection disk (3).

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