An automatic disassembly fixture for a camshaft cover and its usage method

Abstract

An automatic disassembly fixture for a camshaft cover, comprising an upper support plate, a moving plate, a lower support plate, a lifting cylinder, and a plurality of pressing rods. The upper support plate is fixedly connected to the lower support plate through a plurality of connecting rods. The upper support plate is connected to the moving plate through the lifting cylinder. The moving plate is located between the upper support plate and the lower support plate. The plurality of pressing rods are fixed on the moving plate and are used to press the camshaft cover. A first positioning pin and a second positioning pin are arranged along the diagonal of the lower support plate. The first positioning pin and the second positioning pin can be respectively inserted and matched with two positioning rings both located between the camshaft cover and the engine cylinder head. A first rotary lifting cylinder for driving a first clamping finger and a second rotary lifting cylinder for driving a second clamping finger are respectively fixed on both sides of the moving plate. This device can not only prevent the positioning rings from separating with the camshaft cover and the engine cylinder head, but also has reasonable clamping point arrangement and can avoid deformation of parts.

Description

Technical Field

[0001] The present invention belongs to the technical field of engine assembly, and particularly relates to an automatic disassembly fixture for a camshaft cover and a using method thereof, which are applicable to avoiding the positioning ring from falling off during the transplanting process of the camshaft cover and ensuring the subsequent assembly accuracy. Background Art

[0002] One end of the positioning ring is located inside the positioning ring hole on the camshaft cover, and the other end of the positioning ring is located inside the positioning ring hole on the engine cylinder head. The assembly gap between the positioning ring and the positioning ring hole on the camshaft cover is relatively large, while the assembly gap with the positioning ring hole on the engine cylinder head is relatively small. In theory, the positioning ring is always fixed inside the positioning ring hole on the engine cylinder head. However, due to actual machining errors and assembly errors, when using the existing transplanting fixture to remove the camshaft cover from the cylinder head, the positioning ring in the positioning ring hole on the cylinder head will be taken up incidentally. The falling off of the positioning ring from the positioning ring hole on the cylinder head will cause damage to the positioning ring and the positioning ring hole on the cylinder head, affecting the subsequent assembly accuracy. In addition, the existing transplanting fixture usually selects a clamping point on the outside of the camshaft cover, which is likely to cause poor positioning and damage the surface of the part. The camshaft cover is a thin-walled aluminum alloy part, and it is easy to deform due to uneven force during the clamping process. Therefore, the prior art has the problem that the positioning ring is prone to fall off when transplanting the camshaft cover, affecting the assembly accuracy. Summary of the Invention

[0003] The object of the present invention is to overcome the above problems existing in the prior art, and provide an automatic disassembly fixture for a camshaft cover and a using method thereof that can avoid the positioning ring from falling off during the transplanting process of the camshaft cover and ensure subsequent assembly.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] An automatic disassembly fixture for a camshaft cover. The automatic disassembly fixture includes an upper support plate, a moving plate, a lower support plate, a lifting cylinder, a plurality of connecting rods, and a plurality of pressing rods. The middle part of the top end of the upper support plate is connected to a robotic arm, and the middle part of the bottom end of the upper support plate is fixedly connected to the top end of the lifting cylinder. The telescopic end of the lifting cylinder is fixedly connected to the middle part of the top end of the moving plate. The four corners of the upper support plate are respectively fixedly connected to the top ends of the plurality of connecting rods. The bottom ends of the plurality of connecting rods pass through the moving plate and are respectively fixedly connected to the four corners of the lower support plate. The moving plate is fixedly connected to the top ends of the plurality of pressing rods. The bottom ends of the plurality of pressing rods pass through the lower support plate and can be in contact with the upper surface of the camshaft cover. On the lower support plate, a first positioning pin and a second positioning pin are arranged along its diagonal line. The first positioning pin and the second positioning pin can be respectively inserted and matched with two positioning rings both located between the camshaft cover and the engine cylinder head. On both sides of the moving plate, a first rotary lifting cylinder and a second rotary lifting cylinder are respectively fixed. A first clamping finger and a second clamping finger are respectively connected to the first rotary lifting cylinder and the second rotary lifting cylinder. The first clamping finger is arranged close to the first positioning pin, and the second clamping finger is arranged close to the first positioning pin. The second clamping finger and the first clamping finger can be respectively in contact with the lower surfaces on both sides of the camshaft cover.

[0006] The automatic disassembly fixture further includes an auxiliary clamping assembly. The auxiliary clamping assembly includes an auxiliary clamping cylinder, a bracket, and a connecting rod. The auxiliary clamping cylinder is horizontally arranged on the moving plate. The telescopic end of the auxiliary clamping cylinder is movably connected to one end of the connecting rod. The middle part of the connecting rod is movably connected to the bottom of the bracket. The top of the bracket is fixed on the moving plate. The other end of the connecting rod is provided with an auxiliary clamping jaw.

[0007] The first positioning pin and the second positioning pin have the same structure, and both include an upper section, a middle section, and a lower section connected in sequence from top to bottom. The upper section is inserted into the lower support plate and fixed by bolts. The lower section can be inserted and matched with the positioning ring.

[0008] The first clamping finger and the second clamping finger have the same structure, and both include a clamping finger body and a clamping finger. The clamping finger body is fixed to the telescopic end of the rotary lifting cylinder by bolts. One side of the clamping finger is fixedly connected to the clamping finger body, and a gasket is arranged on the other side.

[0009] The top end of the pressing rod is fixedly connected to the moving plate by bolts. A pressing block is arranged at the bottom end of the pressing rod. The pressing block is fixed to the bottom end of the pressing rod by bolts. The pressing block is made of POM plastic.

[0010] The number of the pressing rods is at least three.

[0011] The gap between the outer wall of the lower section and the inner wall of the positioning ring is 0.5 - 0.7 mm.

[0012] A method for using an automatic disassembly fixture for a camshaft cover, the method sequentially comprising the following steps:

[0013] Step 1: First, control the robotic arm to drive the entire automatic disassembly fixture to descend and align. Then, control the telescopic end of the lifting cylinder to extend downward to drive the moving plate to descend until the bottoms of multiple pressing rods are all in contact with the upper surface of the camshaft cover, and the first positioning pin and the second positioning pin are both inserted into the corresponding positioning rings;

[0014] Step 2: First, control the extendable ends of the two rotary lifting cylinders to extend downward simultaneously. Then, control the two rotary lifting cylinders to rotate towards the camshaft cover so that the upper ends of the two clamping fingers are both in contact with the lower surface of the camshaft cover;

[0015] Step 3: Control the telescopic end of the lifting cylinder to retract upward, separate the camshaft cover from the engine cylinder head, and then control the robotic arm to drive the entire automatic disassembly fixture to ascend to complete the disassembly.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. An automatic disassembly fixture for a camshaft cover of the present invention comprises an upper support plate, a movable plate, a lower support plate, a lifting cylinder, a plurality of connecting rods and a plurality of pressure rods. The lifting cylinder is fixed on the upper support plate, and the movable plate is driven by the lifting cylinder. A No. 1 rotating lifting cylinder and a No. 2 rotating lifting cylinder are respectively fixed on both sides of the movable plate. A No. 1 clamping finger and a No. 2 clamping finger are respectively connected to the No. 1 rotating lifting cylinder and the No. 2 rotating lifting cylinder. The No. 2 clamping finger and the No. 1 clamping finger can respectively contact with the lower end surfaces on both sides of the camshaft cover to clamp the two sides of the camshaft cover. A plurality of pressure rods are fixed on the movable plate. The bottom ends of the plurality of pressure rods can contact with the upper end surface of the camshaft cover after passing through the lower support plate, so as to press the camshaft cover during disassembly to prevent the camshaft cover from accumulating. On the one hand, the design has a No. 1 locating pin and a No. 2 locating pin arranged along the diagonal line of the lower support plate. The No. 1 locating pin and the No. 2 locating pin can be respectively inserted and matched with two locating rings located between the camshaft cover and the engine cylinder head. The No. 1 locating pin and the No. 2 locating pin are used to hold the locating rings during removal. Only after confirming that the camshaft cover is separated from the engine cylinder head, the automatic disassembly fixture is driven to rise as a whole, and the camshaft cover is removed to prevent the locating ring from being separated from the engine cylinder head with the camshaft cover, thereby ensuring the subsequent assembly accuracy. On the other hand, the No. 1 clamping finger is arranged close to the No. 1 locating pin, and the No. 2 clamping finger is arranged close to the No. 1 locating pin. The clamping point is arranged close to the locating pin, which can ensure the force balance while pressing the locating ring, and avoid deformation and other damage to the parts. Therefore, the present invention can not only prevent the locating ring from being separated from the engine cylinder head with the camshaft cover during disassembly, thereby ensuring the subsequent assembly accuracy, but also the clamping point is reasonably arranged, and the force on the camshaft cover is stable and uniform during the lifting action, thereby avoiding deformation and other damage to the parts.

[0018] 2. The automatic disassembly fixture of the camshaft cover of the present invention also includes an auxiliary clamping assembly, which includes an auxiliary clamping cylinder, a bracket, and a connecting rod. The auxiliary clamping cylinder is horizontally arranged on a movable plate, and the retractable end of the auxiliary clamping cylinder is movably connected to one end of the connecting rod, the middle of the connecting rod is movably connected to the bottom of the bracket, and the top of the bracket is fixed on the movable plate. The other end of the connecting rod is provided with an auxiliary clamping claw. This design controls the extension of the retractable end of the auxiliary clamping cylinder so that the auxiliary clamping claw at the other end of the connecting rod buckles the camshaft cover to prevent the part from tilting. Therefore, the present invention can prevent the part from tilting and improve the dismantling stability.

[0019] 3. In the automatic disassembly fixture for a camshaft cover of the present invention, the structures of the first clamping finger and the second clamping finger are the same, and each includes a clamping finger body and a clamping finger. The clamping finger body is fixed to the telescopic end of the rotary lifting cylinder by bolts. One side of the clamping finger is fixedly connected to the clamping finger body. In this design, the tops of the two clamping fingers are respectively in contact with the lower end faces on both sides of the camshaft cover. By controlling the telescopic end of the lifting cylinder to retract upward, the camshaft cover is vertically lifted to separate the camshaft cover from the engine cylinder head. This separation method will not damage the camshaft cover, and by arranging gaskets inside the clamping fingers, the lateral extrusion force can be isolated. Therefore, the present invention will not cause clamping damage to the camshaft cover when separating the camshaft cover from the engine cylinder head.

[0020] 4. In the automatic disassembly fixture for a camshaft cover of the present invention, the top end of the pressure rod is fixedly connected to the moving plate by bolts. A pressure block is arranged at the bottom end of the pressure rod, and the pressure block is fixed to the bottom end of the pressure rod by bolts. The pressure block is made of POM plastic. In this design, by replacing pressure blocks with different thicknesses, the pressing degree on the camshaft cover can be adjusted, so that while maintaining an appropriate pressing force, the camshaft cover will not be deformed. Therefore, the present invention can maintain an appropriate pressing force without deforming the camshaft cover. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of the present invention.

[0022] Figure 2 It is the front view of the present invention.

[0023] Figure 3 It is a schematic structural diagram of the pressure rod in the present invention.

[0024] Figure 4 It is a schematic structural diagram of the first positioning pin in the present invention.

[0025] Figure 5 It is a schematic structural diagram of the first clamping finger in the present invention.

[0026] Figure 6 It is an assembly schematic diagram of the positioning ring, the camshaft cover, and the engine cylinder head in the prior art when they are not separated.

[0027] In the figure, there are upper support plate 1, moving plate 2, first rotary lifting cylinder 21, second rotary lifting cylinder 22, first clamping finger 23, clamping finger body 231, clamping finger 232, gasket 233, second clamping finger 24, auxiliary clamping assembly 25, auxiliary clamping cylinder 251, bracket 252, connecting rod 253, auxiliary jaw 254, lower support plate 3, first positioning pin 31, upper section 311, middle section 312, lower section 313, second positioning pin 32, lifting cylinder 4, connecting rod 5, pressing rod 6, pressing block 61, camshaft cover 7, engine cylinder head 8, positioning ring 9. Detailed implementation mode

[0028] The present invention will be further described below in conjunction with the specification drawings and the detailed implementation mode.

[0029] See Figures 1 to 6 , an automatic disassembly fixture for a camshaft cover. The automatic disassembly fixture includes an upper support plate 1, a moving plate 2, a lower support plate 3, a lifting cylinder 4, a plurality of connecting rods 5, and a plurality of pressing rods 6. The middle part of the top end of the upper support plate 1 is connected to a robotic arm, and the middle part of the bottom end of the upper support plate 1 is fixedly connected to the top end of the lifting cylinder 4. The telescopic end of the lifting cylinder 4 is fixedly connected to the middle part of the top end of the moving plate 2. The four corners of the upper support plate 1 are respectively fixedly connected to the top ends of the plurality of connecting rods 5. The bottom ends of the plurality of connecting rods 5 pass through the moving plate 2 and are respectively fixedly connected to the four corners of the lower support plate 3. The moving plate 2 is fixedly connected to the top ends of the plurality of pressing rods 6. The bottom ends of the plurality of pressing rods 6 pass through the lower support plate 3 and can be in contact with the upper surface of the camshaft cover 7. On the lower support plate 3, a first positioning pin 31 and a second positioning pin 32 are arranged along its diagonal line. The first positioning pin 31 and the second positioning pin 32 can be respectively inserted and matched with two positioning rings 9 both located between the camshaft cover 7 and the engine cylinder head 8. On both sides of the moving plate 2, a first rotary lifting cylinder 21 and a second rotary lifting cylinder 22 are respectively fixed. A first clamping finger 23 and a second clamping finger 24 are respectively connected to the first rotary lifting cylinder 21 and the second rotary lifting cylinder 22. The first clamping finger 23 is arranged close to the first positioning pin 31, and the second clamping finger 24 is arranged close to the first positioning pin 31. The second clamping finger 24 and the first clamping finger 23 can be respectively in contact with the lower surfaces on both sides of the camshaft cover 7.

[0030] The automatic disassembly fixture further includes an auxiliary clamping assembly 25. The auxiliary clamping assembly 25 includes an auxiliary clamping cylinder 251, a bracket 252, and a connecting rod 253. The auxiliary clamping cylinder 251 is horizontally arranged on the moving plate 2. The telescopic end of the auxiliary clamping cylinder 251 is movably connected to one end of the connecting rod 253. The middle part of the connecting rod 253 is movably connected to the bottom of the bracket 252. The top of the bracket 252 is fixed on the moving plate 2. The other end of the connecting rod 253 is provided with an auxiliary clamping jaw 254.

[0031] The first positioning pin 31 and the second positioning pin 32 have the same structure, and both include an upper section 311, a middle section 312, and a lower section 313 that are connected in sequence from top to bottom. The upper section 311 is inserted into the lower support plate 3 and fixed by bolts. The lower section 313 can be inserted and matched with the positioning ring 9.

[0032] The first clamping finger 23 and the second clamping finger 24 have the same structure, and both include a clamping finger body 231 and a clamping finger 232. The clamping finger body 231 is fixed to the telescopic end of the rotary lifting cylinder 4 by bolts. One side of the clamping finger 232 is fixedly connected to the clamping finger body 231, and a gasket 233 is provided on the other side.

[0033] The top end of the pressure rod 6 is fixedly connected to the moving plate 2 by bolts. A pressure block 61 is provided at the bottom end of the pressure rod 6. The pressure block 61 is fixed to the bottom end of the pressure rod 6 by bolts. The pressure block 61 is made of POM plastic.

[0034] The number of the pressure rods 6 is at least three.

[0035] The gap between the outer wall of the lower section 313 and the inner wall of the positioning ring 9 is 0.5 - 0.7 mm.

[0036] A method for using an automatic disassembly fixture for a camshaft cover, the method sequentially includes the following steps:

[0037] Step 1: First, control the robotic arm to drive the entire automatic disassembly fixture to descend and align. Then, control the telescopic end of the lifting cylinder 4 to extend downward to drive the moving plate 2 to descend until the bottom ends of multiple pressure rods 6 are all in contact with the upper end surface of the camshaft cover 7. The first positioning pin 31 and the second positioning pin 32 are both inserted into the corresponding positioning rings 9.

[0038] Step 2: First, control the extendable ends of the two rotary lifting cylinders 4 to extend downward simultaneously. Then, control the two rotary lifting cylinders 4 to rotate towards the camshaft cover 7 so that the upper ends of the two clamping fingers 232 are both in contact with the lower end surface of the camshaft cover 7.

[0039] Step 3: Control the retraction of the telescopic end of the lifting cylinder 4 upwards. After separating the camshaft cover 7 from the engine cylinder head 8, control the robotic arm to drive the entire automatic disassembly fixture upwards to complete the disassembly.

[0040] Embodiment 1:

[0041] Refer to Figures 1 to 6 , an automatic disassembly fixture for a camshaft cover, including an upper support plate 1, a moving plate 2, a lower support plate 3, a lifting cylinder 4, four connecting rods 5, and four pressing rods 6. The middle part of the top end of the upper support plate 1 is connected to the robotic arm, and the middle part of the bottom end of the upper support plate 1 is fixedly connected to the top end of the lifting cylinder 4. The telescopic end of the lifting cylinder 4 is fixedly connected to the middle part of the top end of the moving plate 2. The four corners of the upper support plate 1 are respectively fixedly connected to the top ends of the four connecting rods 5. The bottom ends of the four connecting rods 5 pass through the moving plate 2 and are respectively fixedly connected to the four corners of the lower support plate 3. The moving plate 2 is fixedly connected to the top ends of the four pressing rods 6. The bottom ends of the four pressing rods 6 pass through the lower support plate 3 and can be in contact with the upper surface of the camshaft cover 7. On the lower support plate 3, a first positioning pin 31 and a second positioning pin 32 are arranged along its diagonal line. The first positioning pin 31 and the second positioning pin 32 can be respectively inserted and matched with two positioning rings 9 both located between the camshaft cover 7 and the engine cylinder head 8. On both sides of the moving plate 2, a first rotary lifting cylinder 21 and a second rotary lifting cylinder 22 are respectively fixed. A first clamping finger 23 and a second clamping finger 24 are respectively connected to the first rotary lifting cylinder 21 and the second rotary lifting cylinder 22. The first clamping finger 23 is arranged close to the first positioning pin 31, and the second clamping finger 24 is arranged close to the first positioning pin 31. The second clamping finger 24 and the first clamping finger 23 can be respectively in contact with the lower surfaces on both sides of the camshaft cover 7;

[0042] The usage method of the above automatic disassembly fixture for a camshaft cover is carried out in the following steps in sequence:

[0043] Step 1: First, control the robotic arm to drive the entire automatic disassembly fixture to descend and align. Then, control the telescopic end of the lifting cylinder 4 to extend downwards to drive the moving plate 2 to descend until the bottom ends of the multiple pressing rods 6 are all in close contact with the upper surface of the camshaft cover 7, and the first positioning pin 31 and the second positioning pin 32 are both inserted into the corresponding positioning rings 9;

[0044] Step 2: First, control the extendable ends of the two rotary lifting cylinders 4 to extend downwards simultaneously. Then, control the two rotary lifting cylinders 4 to rotate towards the camshaft cover 7 so that the upper ends of the two clamping fingers 232 are both in close contact with the lower surface of the camshaft cover 7;

[0045] Step 3: Control the retraction of the telescopic end of the lifting cylinder 4 upwards. After separating the camshaft cover 7 from the engine cylinder head 8, control the robotic arm to drive the entire automatic disassembly fixture upwards to complete the disassembly.

[0046] Example 2:

[0047] The difference from Example 1 is that:

[0048] The automatic disassembly fixture further includes an auxiliary clamping assembly 25, and the auxiliary clamping assembly 25 includes an auxiliary clamping cylinder 251, a bracket 252, and a connecting rod 253. The auxiliary clamping cylinder 251 is horizontally arranged on the moving plate 2, and the telescopic end of the auxiliary clamping cylinder 251 is movably connected to one end of the connecting rod 253. The middle part of the connecting rod 253 is movably connected to the bottom of the bracket 252. The top of the bracket 252 is fixed on the moving plate 2, and the other end of the connecting rod 253 is provided with an auxiliary clamping jaw 254.

[0049] Example 3:

[0050] The difference from Example 1 is that:

[0051] The structures of the first positioning pin 31 and the second positioning pin 32 are the same, and both include an upper section 311, a middle section 312, and a lower section 313 that are sequentially connected from top to bottom. The upper section 311 is inserted into the lower support plate 3 and fixed by bolts. The lower section 313 can be inserted and matched with the positioning ring 9, and the gap between the outer wall of the lower section 313 and the inner wall of the positioning ring 9 is controlled within 0.5 - 0.7 mm.

[0052] Example 4:

[0053] The difference from Example 1 is that:

[0054] The structures of the first clamping finger 23 and the second clamping finger 24 are the same, and both include a clamping finger body 231 and a clamping finger 232. The clamping finger body 231 is fixed to the telescopic end of the rotary lifting cylinder 4 by bolts. One side of the clamping finger 232 is fixedly connected to the clamping finger body 231, and a gasket 233 is provided on the other side.

[0055] Example 5:

[0056] The difference from Example 1 is that:

[0057] The number of the pressure rods 6 is three. The top ends of the pressure rods 6 are fixed to the moving plate 2 by bolts. The bottom ends of the pressure rods 6 are provided with pressure blocks 61. The pressure blocks 61 are fixed to the bottom ends of the pressure rods 6 by bolts, and the pressure blocks 61 are made of POM plastic.

Claims

1. An automatic disassembly fixture for a camshaft cover, characterized in that: The automatic disassembly fixture includes an upper support plate (1), a moving plate (2), a lower support plate (3), a lifting cylinder (4), a plurality of connecting rods (5), and a plurality of pressing rods (6). The middle part of the top end of the upper support plate (1) is connected to a robotic arm, and the middle part of the bottom end of the upper support plate (1) is fixedly connected to the top end of the lifting cylinder (4). The telescopic end of the lifting cylinder (4) is fixedly connected to the middle part of the top end of the moving plate (2). The four corners of the upper support plate (1) are respectively fixedly connected to the top ends of the plurality of connecting rods (5). The bottom ends of the plurality of connecting rods (5) pass through the moving plate (2) and are respectively fixedly connected to the four corners of the lower support plate (3). The moving plate (2) is fixedly connected to the top ends of the plurality of pressing rods (6). The bottom ends of the plurality of pressing rods (6) pass through the lower support plate (3) and can contact the upper surface of the camshaft cover (7). On the lower support plate (3), a first positioning pin (31) and a second positioning pin (32) are arranged along its diagonal. The first positioning pin (31) and the second positioning pin (32) can be respectively inserted and matched with two positioning rings (9) both located between the camshaft cover (7) and the engine cylinder head (8). On both sides of the moving plate (2), a first rotary lifting cylinder (21) and a second rotary lifting cylinder (22) are respectively fixed. A first clamping finger (23) and a second clamping finger (24) are respectively connected to the first rotary lifting cylinder (21) and the second rotary lifting cylinder (22). The first clamping finger (23) is arranged close to the first positioning pin (31), and the second clamping finger (24) is arranged close to the second positioning pin (32). The second clamping finger (24) and the first clamping finger (23) can respectively contact the lower surfaces of both sides of the camshaft cover (7). The first positioning pin (31) and the second positioning pin (32) have the same structure, and both include an upper section (311), a middle section (312), and a lower section (313) connected in sequence from top to bottom. After the upper section (311) is inserted into the lower support plate (3), it is fixed by bolts. The lower section (313) can be inserted and matched with the positioning ring (9). The first clamping finger (23) and the second clamping finger (24) have the same structure, and both include a clamping finger body (231) and a clamping finger (232). The clamping finger body (231) is fixed to the telescopic end of the rotary lifting cylinder by bolts. One side of the clamping finger (232) is fixedly connected to the clamping finger body (231), and a gasket (233) is arranged on the other side. The gap between the outer wall of the lower section (313) and the inner wall of the positioning ring (9) is 0.5 - 0.7 mm.

2. The automatic disassembly fixture for a camshaft cover according to claim 1, wherein: The automatic disassembly fixture further includes an auxiliary clamping assembly (25). The auxiliary clamping assembly (25) includes an auxiliary clamping cylinder (251), a bracket (252), and a connecting rod (253). The auxiliary clamping cylinder (251) is horizontally arranged on the moving plate (2). The telescopic end of the auxiliary clamping cylinder (251) is movably connected to one end of the connecting rod (253). The middle of the connecting rod (253) is movably connected to the bottom of the bracket (252). The top of the bracket (252) is fixed on the moving plate (2). The other end of the connecting rod (253) is provided with an auxiliary jaw (254).

3. The automatic disassembly fixture for a camshaft cover according to claim 1, wherein: The top end of the pressure rod (6) is fixedly connected to the moving plate (2) by bolts. The bottom end of the pressure rod (6) is provided with a pressure block (61). The pressure block (61) is fixedly connected to the bottom end of the pressure rod (6) by bolts. The pressure block (61) is made of POM plastic.

4. The automatic disassembly fixture for a camshaft cover according to claim 1, characterized in that: The number of the pressure rods (6) is at least three.

5. A method for using the automatic disassembly fixture for a camshaft cover according to claim 1, characterized in that: The method for use successively includes the following steps: Step 1: First, control the robotic arm to drive the entire automatic disassembly fixture to descend and align. Then, control the telescopic end of the lifting cylinder (4) to extend downward to drive the moving plate (2) to descend until the bottom ends of the plurality of pressure rods (6) are all in contact with the upper surface of the camshaft cover (7). The first positioning pin (31) and the second positioning pin (32) are both inserted into the corresponding positioning rings (9). Step 2: First, control the extendable ends of the two rotary lifting cylinders to extend downward simultaneously. Then, control the two rotary lifting cylinders to rotate towards the camshaft cover (7) so that the upper ends of the two clamping fingers (232) are both in contact with the lower surface of the camshaft cover (7). Step 3: Control the telescopic end of the lifting cylinder (4) to retract upward. After separating the camshaft cover (7) from the engine cylinder head (8), control the robotic arm to drive the entire automatic disassembly fixture to rise to complete the disassembly.

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