A paint production cover placing and clamping mechanism

Abstract

The utility model relates to paint production technical field especially, and it is a kind of put cover clamping mechanism for paint production;Including fixed frame, platform, left and right movement clamping mechanism and front and rear movement clamping mechanism;The one end of fixed frame is connected with platform, and the platform is separately provided with left and right movement clamping mechanism and front and rear movement clamping mechanism;Compared with prior art, the utility model is through being provided with left and right movement clamping mechanism and front and rear movement clamping mechanism, can effectively clamp several lids once, and can clamp and loosen lid, again through the cooperation of put cover mechanism, can take down lid one by one, change the deficiency of placing lid on jar one by one by artificial in prior art, not only greatly reduce the worker labor expenditure, and further reduce artificial cost, and, replace manual operation by mechanical automation, greatly improve production efficiency, and the degree of automation is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to paint production technical field especially a put cover clamping mechanism for paint production. BACKGROUND

[0002] Paint is a kind of chemical mixture coating that can firmly cover on the surface of object, and it is used for protection, decoration, marking and other special purposes. The book "Coating Technology" defines it as follows: "Coating is a kind of material, which can be coated on the surface of object by different construction technology, to form a solid thin film with firm adhesion and certain strength. The film formed is called coating film, also known as paint film or coating layer."

[0003] At present, after filling, the paint tank needs to be capped and packaged, and before capping, the paint tank cover needs to be placed on the top surface of the paint tank. However, the existing technology is to place several paint tanks filled with paint on the conveying belt, and then place the covers on the paint tanks one by one by manual operation. This method consumes a lot of labor and increases labor costs, and is not conducive to improving production efficiency and has low automation degree. CONTENT OF THE UTILITY MODEL

[0004] In view of the deficiencies of the prior art, the utility model provides a put cover clamping mechanism for paint production. The clamping mechanism can effectively solve the problems in the background technology after research and development.

[0005] The technical scheme of the utility model is as follows:

[0006] A put cover clamping mechanism for paint production, comprising a fixed frame, a platform, left and right moving clamping mechanisms and front and rear moving clamping mechanisms; one end of the fixed frame is connected with the platform, and the platform is respectively provided with the left and right moving clamping mechanisms and the front and rear moving clamping mechanisms;

[0007] The left and right moving clamping mechanisms comprise a first driving device, the first driving device is installed on the platform, the first driving device is respectively connected with a first moving rod and a second moving rod, the first moving rod is respectively connected with a first moving part and a second moving part, the second moving rod is respectively connected with a third moving part and a fourth moving part, the first moving part and the third moving part are fixedly connected with a first clamping part, the second moving part and the fourth moving part are fixedly connected with a second clamping part, and the first driving device is used to drive the first moving rod and the second moving rod to rotate at the same time, thereby driving the first clamping part and the second clamping part to move relatively to clamp or loosen the cover;

[0008] The front-back moving clamping mechanism comprises a second driving device mounted on the platform, a third moving rod and a fourth moving rod connected to the second driving device respectively, one end of the third moving rod being fixedly connected with a third clamping part, one end of the fourth moving rod being fixedly connected with a fourth clamping part, and the second driving device being used to drive the third moving rod and the fourth moving rod to move forward and backward simultaneously, thereby driving the third clamping part and the fourth clamping part to move relatively to clamp or loosen the cover.

[0009] Further, the first driving device comprises a first servo motor, a first speed reducer, a first synchronous pulley, a first bearing support seat, a second bearing support seat, a third bearing support seat and a fourth bearing support seat, the first speed reducer being fixedly mounted on the top surface of the platform, the first servo motor being in transmission connection with the first speed reducer and being fixedly connected to the mounting frame on the first speed reducer, the first speed reducer being in transmission connection with the first synchronous pulley, both ends of the first synchronous pulley being in transmission connection with the first moving rod and the second moving rod respectively, the first bearing support seat and the second bearing support seat being arranged on one side of the first moving rod and being fixedly connected to the left and right ends of the platform respectively, the third bearing support seat and the fourth bearing support seat being arranged on one side of the second moving rod and being fixedly connected to the left and right ends of the platform respectively, both ends of the first moving rod being in transmission connection with the first bearing support seat and the second bearing support seat respectively, both ends of the second moving rod being in transmission connection with the third bearing support seat and the fourth bearing support seat respectively; the first moving part, the second moving part, the third moving part and the fourth moving part are all lead screws and are in transmission connection with the first moving rod or the second moving rod respectively; the first clamping part and the second clamping part are the same in structure except for the installation positions, the first clamping part comprising a first moving frame, a first push cylinder, a second push cylinder, a support plate, a first clamping block and a first clamping rod, the first moving frame being fixedly connected between the first moving part and the third moving part, the first moving frame having the first push cylinder and the second push cylinder fixedly mounted therein respectively, the support plate being fixedly connected to the push rod end of the first push cylinder, the first clamping block being fixedly connected to the push rod end of the second push cylinder, the first clamping block having an installation groove arranged at one end away from the second push cylinder, and the first clamping rod being fixedly mounted in the installation groove.

[0010] Further, the left-right moving clamping mechanism further comprises a first sliding rail and a first sliding block, the first sliding rail being fixedly mounted on the top surface of the platform at the positions of the four corners, the first sliding block being in sliding connection with the moving end of the first sliding rail, and the first sliding block being fixedly connected with the first moving part, the second moving part, the third moving part or the fourth moving part.

[0011] Further, the second driving device comprises a second servo motor, a second speed reducer, a first screw rod, a second synchronous pulley, a third synchronous pulley, a first screw rod fixing seat and a second screw rod fixing seat; the second speed reducer is fixedly installed on the bottom surface of the platform, the second servo motor is in transmission connection with the second speed reducer and is fixedly connected on the mounting frame of the second speed reducer, the output end of the second speed reducer is in transmission connection with the first screw rod, the two ends of the first screw rod are respectively in transmission connection with the second synchronous pulley and the third synchronous pulley, and the bottom surface of the platform is also fixedly provided with the first screw rod fixing seat and the second screw rod fixing seat; the third moving rod is in transmission connection with the first screw rod fixing seat and the second synchronous pulley respectively, and the fourth moving rod is in transmission connection with the second screw rod fixing seat and the third synchronous pulley respectively; the third clamping part and the fourth clamping part are the same in other structures except installation positions, the third clamping part comprises a first moving block and a second clamping rod, the moving end of the third moving rod is fixedly connected with the first moving block, and the first moving block is fixedly provided with the second clamping rod; and the first moving block and the second clamping rod are arranged on the top surface of the platform.

[0012] Further, the front-back moving clamping mechanism further comprises a second sliding rail and a second sliding block, the top surface of the platform is fixedly provided with the second sliding rail at the front-back positions in the middle part, the moving end of the second sliding rail is in sliding connection with the second sliding block, and the second sliding block is fixedly connected with the first moving block.

[0013] The utility model discloses beneficial effects are:

[0014] Compared with the prior art, the utility model discloses be provided with left -right moving clamping mechanism and front -back moving clamping mechanism, can effectively clamp several lids once, and can clamp and loosen the lid, and through the cooperation of the lid placing mechanism, can take down the lid one by one, change the deficiency that the lid is placed on the jar one by one in prior art by manual, not only greatly reduce the labor expenditure of worker, and further reduce the labor cost, and adopt mechanical automation to replace manual operation, greatly improve production efficiency, and the automation degree is higher. ACCURACY OF DRAWINGS

[0015] Figure 1 It is the structure schematic drawing of the utility model;

[0016] Figure 2 It is the structure schematic drawing of the platform bottom surface of the utility model;

[0017] Figure 3 It is the structure schematic drawing of the rear side of the utility model;

[0018] Figure 4 It is the structure schematic drawing of the left -right moving clamping mechanism of the utility model;

[0019] Figure 5 It is the structure schematic view of the second side of the left-right moving clamping mechanism of the utility model;

[0020] Figure 6 It is the structure schematic view of the third side of the left-right moving clamping mechanism of the utility model;

[0021] Figure 7 It is the structure schematic view of the front-back moving clamping mechanism of the utility model;

[0022] Figure 8 It is the structure schematic view of the second side of the front-back moving clamping mechanism (platform bottom surface) of the utility model;

[0023] Figure 9 It is the structure schematic view of the lifting mechanism of the utility model;

[0024] Figure 10 It is the structure schematic view of the second side of the lifting mechanism of the utility model.

[0025] In the drawing, 1, fixed frame; 2, platform; 3, left-right moving clamping mechanism; 4, front-back moving clamping mechanism; 5, cover placing mechanism; 6, first driving device; 7, first moving rod; 8, second moving rod; 9, first moving part; 10, second moving part; 11, third moving part; 12, fourth moving part; 13, first clamping part; 14, second clamping part; 15, second driving device; 16, third moving rod; 17, fourth moving rod; 18, third clamping part; 19, fourth clamping part; 20, third driving device; 21, rotating part; 22, vacuum chuck; 23, first servo motor; 24, first speed reducer; 25, first synchronous pulley; 26, first bearing support seat; 27, second bearing support seat; 28, third bearing support seat; 29, fourth bearing support seat; 30, first moving frame; 31, first push cylinder; 32, second push cylinder; 33, support plate; 34, first clamping block; 35, first clamping rod; 36, first sliding rail; 37, first sliding block; 38, second servo motor; 39, second speed reducer; 40, first screw rod; 41, second synchronous pulley; 42, third synchronous pulley; 43, first screw rod fixing seat; 44, second screw rod fixing seat; 45, first moving block; 46, second clamping rod; 47, second sliding rail; 48, second sliding block; 49, rotating cylinder; 50, transmission rod; 51, mounting connecting block; 52, third push cylinder; 53, fourth push cylinder; 54, third sliding rail; 55, third sliding block; 56, lifting mechanism; 57, third servo motor; 58, third speed reducer; 59, lifting rod; 60, lifting frame. DETAILED DESCRIPTION

[0026] The specific embodiment of the utility model is further explained in combination with the drawings as follows:

[0027] As Figures 1-10 shown,

[0028] An automatic cap placing device for paint production comprises a cap placing clamping mechanism and a cap placing mechanism 5, the cap placing clamping mechanism comprises a fixed frame 1, a platform 2, left-right moving clamping mechanisms 3 and front-rear moving clamping mechanisms 4; one end of the fixed frame 1 is connected with the platform 2, and the platform 2 is respectively provided with the left-right moving clamping mechanisms 3, the front-rear moving clamping mechanisms 4 and the cap placing mechanism 5.

[0029] By being provided with the left-right moving clamping mechanisms 3 and the front-rear moving clamping mechanisms 4, several caps can be effectively clamped at one time, and the caps can be clamped and loosened, and then the caps can be taken off one by one through the cooperation of the cap placing mechanism 5, which changes the deficiency in the prior art that the caps are placed on the jars one by one by manual operation, greatly reduces the labor expenditure of workers, further reduces the labor cost, and greatly improves the production efficiency by replacing the manual operation with mechanical automation, and the degree of automation is high.

[0030] By being provided with the left-right moving clamping mechanisms 3, the front-rear moving clamping mechanisms 4 and the cap placing mechanism 5, automatic cap placing operation can be realized, which changes the deficiency of manual operation, greatly reduces the labor cost, has a high degree of automation, is beneficial to large-scale production of enterprises, and effectively ensures the quality of the subsequent cap pressing because the quality of the caps placed by the cap placing device is basically the same each time, thereby effectively ensuring the quality of the subsequent cap pressing and greatly reducing the rate of defective products.

[0031] The left-right moving clamping mechanism 3 comprises a first driving device 6, the first driving device 6 is installed on the platform 2, the first driving device 6 is respectively connected with a first moving rod 7 and a second moving rod 8, the first moving rod 7 is respectively connected with a first moving part 9 and a second moving part 10, the second moving rod 8 is respectively connected with a third moving part 11 and a fourth moving part 12, the first moving part 9 and the third moving part 11 are fixedly connected with a first clamping part 13, the second moving part 10 and the fourth moving part 12 are fixedly connected with a second clamping part 14, and the first driving device 6 is used to drive the first moving rod 7 and the second moving rod 8 to rotate at the same time, thereby driving the first clamping part 13 and the second clamping part 14 to move relatively to clamp or loosen the caps; it can be understood that when the first driving device 6 is started, the first moving rod 7 and the second moving rod 8 can be driven to rotate at the same time, thereby synchronously driving the first moving part 9 and the second moving part 10 and the third moving part 11 and the fourth moving part 12 to move, so that the first clamping part 13 and the second clamping part 14 can clamp or loosen the workpieces (caps) in opposite directions, achieving the effect of left-right clamping.

[0032] The front and back moving clamping mechanism 4 comprises a second driving device 15 installed on the platform 2, the third moving rod 16 and the fourth moving rod 17 are respectively connected to the second driving device 15, one end of the third moving rod 16 is fixedly connected with the third clamping part 18, one end of the fourth moving rod 17 is fixedly connected with the fourth clamping part 19, and the second driving device 15 is used for driving the third moving rod 16 and the fourth moving rod 17 to move forward and backward at the same time, thereby driving the third clamping part 18 and the fourth clamping part 19 to move relatively to clamp the cover or to move reversely to loosen the cover; it can be understood that starting the second driving device 15 can drive the third moving rod 16 and the fourth moving rod 17 to move relatively or reversely at the same time, thereby driving the third clamping part 18 and the fourth clamping part 19 to move relatively or reversely to clamp or loosen the workpiece, and the effect of front and back clamping is realized.

[0033] Through the above left and right clamping and front and back clamping, a plurality of covers can be effectively clamped, the subsequent cover placing operation is facilitated, a plurality of covers can be placed on the clamping mechanism at a time, and the working efficiency of the whole machine is greatly improved.

[0034] The cover placing mechanism 5 comprises a third driving device 20 installed on the platform 2, the rotating part 21 is fixedly connected to the movement end of the third driving device 20, the vacuum suction disc 22 is connected to both ends of the rotating part 21, and the third driving device 20 is used for driving the rotating part 21 to rotate to suck the cover clamped on the left and right moving clamping mechanism 3 and the front and back moving clamping mechanism 4 and then overturn to place the cover; it can be understood that starting the third driving device 20 can drive the rotating part 21 to rotate, then the vacuum suction disc 22 sucks the cover tightly or releases the cover, and the automatic cover placing operation is realized.

[0035] As a preferred implementation, the first driving device 6 comprises a first servo motor 23, a first speed reducer 24, a first synchronous pulley 25, a first bearing support seat 26, a second bearing support seat 27, a third bearing support seat 28 and a fourth bearing support seat 29. The first speed reducer 24 is fixedly installed on the top surface of the platform 2. The first servo motor 23 is in transmission connection with the first speed reducer 24 and is fixed to the mounting frame on the first speed reducer 24. The first speed reducer 24 is in transmission connection with the first synchronous pulley 25. The two ends of the first synchronous pulley 25 are respectively in transmission connection with the first moving rod 7 and the second moving rod 8. The first bearing support seat 26 and the second bearing support seat 27 are arranged on one side of the first moving rod 7 and are respectively fixed to the left and right ends of the platform 2. The third bearing support seat 28 and the fourth bearing support seat 29 are arranged on one side of the second moving rod 8 and are respectively fixed to the left and right ends of the platform 2. The two ends of the first moving rod 7 are respectively in transmission connection with the first bearing support seat 26 and the second bearing support seat 27. The two ends of the second moving rod 8 are respectively in transmission connection with the third bearing support seat 28 and the fourth bearing support seat 29. The first moving part 9, the second moving part 10, the third moving part 11 and the fourth moving part 12 are all lead screws and are respectively in transmission connection with the first moving rod 7 or the second moving rod 8. The first clamping part 13 and the second clamping part 14 are the same in structure except for the installation position. The first clamping part 13 comprises a first moving frame 30, a first push cylinder 31, a second push cylinder 32, a support plate 33, a first clamping block 34 and a first clamping rod 35. The first moving frame 30 is fixedly connected between the first moving part 9 and the third moving part 11. The first moving frame 30 has the first push cylinder 31 and the second push cylinder 32 fixedly installed inside. The support plate 33 is fixedly connected to the push rod end of the first push cylinder 31. The first clamping block 34 is fixedly connected to the push rod end of the second push cylinder 32. The first clamping block 34 is provided with a mounting groove at the end away from the second push cylinder 32. The first clamping rod 35 is fixedly installed inside the mounting groove.

[0036] As a preferred implementation, the left-right moving clamping mechanism 3 further comprises a first sliding rail 36 and a first sliding block 37. The first sliding rail 36 is fixedly installed at the corner positions on the top surface of the platform 2. The first sliding block 37 is in sliding connection with the moving end of the first sliding rail 36. The first sliding block 37 is fixedly connected with the first moving part 9, the second moving part 10, the third moving part 11 or the fourth moving part 12. The first sliding rail 36 and the first sliding block 37 can effectively assist the moving operation of the first moving part 9, the second moving part 10, the third moving part 11 and the fourth moving part 12 and improve the precision of movement.

[0037] As a preferred implementation, the second driving device 15 comprises a second servo motor 38, a second speed reducer 39, a first lead screw 40, a second synchronous pulley 41, a third synchronous pulley 42, a first lead screw fixing seat 43, and a second lead screw fixing seat 44. The second speed reducer 39 is fixedly installed on the bottom surface of the platform 2. The second servo motor 38 is in transmission connection with the second speed reducer 39 and is fixedly connected to the mounting bracket on the second speed reducer 39. The output end of the second speed reducer 39 is in transmission connection with the first lead screw 40. The two ends of the first lead screw 40 are respectively in transmission connection with the second synchronous pulley 41 and the third synchronous pulley 42. The bottom surface of the platform 2 is also fixedly installed with the first lead screw fixing seat 43 and the second lead screw fixing seat 44. The third moving rod 16 is in transmission connection with the first lead screw fixing seat 43 and the second synchronous pulley 41 respectively. The fourth moving rod 17 is in transmission connection with the second lead screw fixing seat 44 and the third synchronous pulley 42 respectively. The third clamping part 18 and the fourth clamping part 19 are the same in structure except for the installation position. The third clamping part 18 comprises a first moving block 45 and a second clamping rod 46. The moving end of the third moving rod 16 is fixedly connected with the first moving block 45. The first moving block 45 is fixedly installed with the second clamping rod 46. The first moving block 45 and the second clamping rod 46 are arranged on the top surface of the platform 2.

[0038] As a preferred implementation, the front-back moving clamping mechanism 4 further comprises a second sliding rail 47 and a second sliding block 48. The second sliding rail 47 is fixedly installed on the top surface of the platform 2 at the front-back position of the middle part. The moving end of the second sliding rail 47 is slidably connected with the second sliding block 48. The second sliding block 48 is fixedly connected with the first moving block 45. The second sliding rail 47 and the second sliding block 48 can effectively assist the movement of the first moving block 45, so that the second clamping rod 46 can accurately clamp the lid.

[0039] As a preferred implementation, the third driving device 20 comprises a rotary air cylinder 49, a transmission rod 50, and a mounting connecting block 51. The rotary air cylinder 49 is fixedly installed on the rear surface of the platform 2. The output end of the rotary air cylinder 49 is connected with the transmission rod 50. The other end of the transmission rod 50 is fixedly connected with the mounting connecting block 51. The rotary part 21 comprises a third push air cylinder 52 and a fourth push air cylinder 53. The mounting connecting block 51 is fixedly installed with the third push air cylinder 52 and the fourth push air cylinder 53 respectively on the end face away from the transmission rod 50. The push rod ends of the third push air cylinder 52 and the fourth push air cylinder 53 are reversely arranged. The push rod ends of the third push air cylinder 52 and the fourth push air cylinder 53 are fixedly connected with the vacuum chuck 22.

[0040] As a preferred implementation, the third sliding rail 54 is arranged on the end face of the fixing frame 1 in the vertical direction, and the third sliding block 55 is arranged on the rear end face of the platform 2 and matched with the third sliding rail 54, so that the fixing frame 1 and the platform 2 are in sliding connection. The third sliding rail 54 and the third sliding block 55 are arranged, so that the platform 2 can be lifted on the fixing frame 1, and the position of the platform 2 and the position of the cover are adjusted.

[0041] As a preferred implementation, the automatic cover placing device further comprises a lifting mechanism 56, the lifting mechanism 56 comprises a third servo motor 57, a third speed reducer 58, a lifting rod 59 and a lifting frame 60, the third speed reducer 58 is fixedly arranged on the top surface of the fixing frame 1, the third servo motor 57 is in transmission connection with the third speed reducer 58 and is fixedly connected to the mounting frame on the third speed reducer 58, the output end of the third speed reducer 58 is in transmission connection with the lifting rod 59, the other end of the lifting rod 59 is fixedly connected with the lifting frame 60, and the lifting frame 60 is fixedly connected with the platform 2.

[0042] The working principle of the utility model is: the cap placing device can be installed on the whole production line, the conveying mechanism is below the cap placing device, the conveying mechanism will convey the cans filled with paint to the directly below of the device, the main operation of the process is cap placing operation, the next process is cap pressing operation; when working, first start the first servo motor 23 and the first speed reducer 24, then drive the first synchronous pulley 25 to work, then synchronously drive the first moving rod 7 and the second moving rod 8 to rotate, when the first moving rod 7 and the second moving rod 8 rotate, the first moving part 9 and the second moving part 10 can be driven to clamp inwardly or loosen outwardly (the third moving part 11 and the fourth moving part 12 clamp inwardly or loosen outwardly synchronously), then drive the first clamping part 13 and the second clamping part 14 to move inwardly or outwardly; in addition, when starting the second servo motor 38 and the second speed reducer 39, the first screw rod 40 will rotate, then synchronously drive the second synchronous pulley 41 and the third synchronous pulley 42 to move, so that the third moving rod 16 or the fourth moving rod 17 moves forwardly or backwardly, then the second clamping rod 46 clamps the cap forwardly and backwardly; when placing the cap, first start the fourth pushing cylinder 53, push the vacuum chuck 22 to contact the cap upwardly, then start the vacuum chuck 22 to clamp the cap, at this time, the first pushing cylinder 31 can be started to drive the supporting plate 33 to move away from the bottom surface of the cap (before placing the cap, the supporting plate 33 is located on the bottom surface of the cap, the purpose is to support the whole cap), then the fourth pushing cylinder 53 drives the vacuum chuck 22 to move downwardly, at this time, the cap at the bottom can be pulled out (because the left and right moving clamping mechanism 3 and the forward and backward moving clamping mechanism 4 still clamp the caps at other positions, when the suction force is greater than the clamping force, the cap at the bottom can be pulled out), then start the rotary cylinder 49 to rotate by 180 degrees, turn the cap to the lowermost position, then close the vacuum chuck 22 (the vacuum chuck 22 can be driven to move downwardly by the fourth pushing cylinder 53, so that the cap contacts the top surface of the can), the cap can accurately fall on the can, at this time, the third pushing cylinder 52 is located at the position of the original fourth pushing cylinder 53, the cap placing and taking operation can be continuously carried out, then the cap placing and taking operation can be realized; it should be pointed out that after the cap at the bottom is taken out, the first pushing cylinder 31 drives the supporting plate 33 to move forwardly to the original position, then the second pushing cylinder 32 is started to drive the first clamping block 34 and the first clamping rod 35 to move outwardly to the original position, loosen the whole cap (left and right), similarly, the second servo motor 38 drives the first moving block 45 and the second clamping rod 46 to move outwardly to the original position, loosen the whole cap (forward and backward), at this time, the whole cap will move downwardly to the top surface of the supporting plate 33, the cap placing operation can be continuously carried out; in addition, when starting the third servo motor 57 and the third speed reducer 58, the lifting rod 59 and the lifting frame 60 can be driven to move upwardly and downwardly, then drive the platform 2 to move upwardly and downwardly, adjust the position of the platform 2 to place the cap.

[0043] The above embodiments only describe the preferred embodiments of the utility model, and do not limit the scope of the utility model, and various deformations and improvements of the technical scheme of the utility model made by the ordinary engineering technicians in the art without departing from the design spirit of the utility model shall fall within the protection scope determined by the claims of the utility model.

Claims

1. A paint production cover placing and clamping mechanism, comprising a fixed frame, a platform, left and right moving clamping mechanisms and front and back moving clamping mechanisms; one end of the fixed frame is connected with the platform, and the platform is respectively provided with the left and right moving clamping mechanisms and the front and back moving clamping mechanisms; characterized in that: the left and right moving clamping mechanisms comprise a first driving device, the first driving device is installed on the platform, the first driving device is respectively connected with a first moving rod and a second moving rod, the first moving rod is respectively connected with a first moving part and a second moving part, the second moving rod is respectively connected with a third moving part and a fourth moving part, the first moving part and the third moving part are fixedly connected with a first clamping part, the second moving part and the fourth moving part are fixedly connected with a second clamping part, and the first driving device is used for driving the first moving rod and the second moving rod to rotate at the same time, thereby driving the first clamping part and the second clamping part to move relatively to clamp or loosen the cover; the front and back moving clamping mechanisms comprise a second driving device, the second driving device is installed on the platform, the second driving device is respectively connected with a third moving rod and a fourth moving rod, one end of the third moving rod is fixedly connected with a third clamping part, one end of the fourth moving rod is fixedly connected with a fourth clamping part, and the second driving device is used for driving the third moving rod and the fourth moving rod to move forward and backward at the same time, thereby driving the third clamping part and the fourth clamping part to move relatively to clamp or loosen the cover.

2. The cap placing and holding mechanism for paint production according to claim 1, characterized in that: The first driving device comprises a first servo motor, a first reduction motor, a first synchronous pulley, a first bearing support seat, a second bearing support seat, a third bearing support seat and a fourth bearing support seat, the first reduction motor is fixedly installed on the top surface of the platform, the first servo motor is in transmission connection with the first reduction motor and is fixed on the mounting frame on the first reduction motor, the first reduction motor is in transmission connection with the first synchronous pulley, the two ends of the first synchronous pulley are in transmission connection with the first moving rod and the second moving rod respectively, the first bearing support seat and the second bearing support seat are arranged on one side of the first moving rod and are fixed on the left and right ends of the platform respectively, the third bearing support seat and the fourth bearing support seat are arranged on one side of the second moving rod and are fixed on the left and right ends of the platform respectively, the two ends of the first moving rod are in transmission connection with the first bearing support seat and the second bearing support seat respectively, and the two ends of the second moving rod are in transmission connection with the third bearing support seat and the fourth bearing support seat respectively; the first moving part, the second moving part, the third moving part and the fourth moving part are all lead screws and are in transmission connection with the first moving rod or the second moving rod respectively; the first clamping part and the second clamping part are the same in structure except for the installation positions, the first clamping part comprises a first moving frame, a first push cylinder, a second push cylinder, a support plate, a first clamping block and a first clamping rod, the first moving frame is fixedly connected between the first moving part and the third moving part, the first push cylinder and the second push cylinder are fixedly installed in the first moving frame respectively, the support plate is fixedly connected to the push rod end of the first push cylinder, the first clamping block is fixedly connected to the push rod end of the second push cylinder, the first clamping rod is arranged on the end of the first clamping block away from the second push cylinder, and the first clamping rod is fixedly installed in the installation groove.

3. The cap placing and holding mechanism for paint production according to claim 2, characterized in that: The left-right moving clamping mechanism further comprises a first sliding rail and a first sliding block, the first sliding rail is fixedly installed on the top surface of the platform at the corner positions, the first sliding block is in sliding connection with the movement end of the first sliding rail, and the first sliding block is fixedly connected with the first moving part, or the first sliding block is fixedly connected with the second moving part, or the first sliding block is fixedly connected with the third moving part, or the first sliding block is fixedly connected with the fourth moving part.

4. The cap placing and holding mechanism for paint production according to claim 3, characterized in that: The second driving device comprises a second servo motor, a second speed reducer, a first screw rod, a second synchronous pulley, a third synchronous pulley, a first screw rod fixing seat and a second screw rod fixing seat; the second speed reducer is fixedly installed on the bottom surface of the platform, the second servo motor is in transmission connection with the second speed reducer and is fixedly connected to the mounting frame on the second speed reducer, the output end of the second speed reducer is in transmission connection with the first screw rod, the two ends of the first screw rod are respectively in transmission connection with the second synchronous pulley and the third synchronous pulley, the bottom surface of the platform is further fixedly installed with the first screw rod fixing seat and the second screw rod fixing seat, the third moving rod is in transmission connection with the first screw rod fixing seat and the second synchronous pulley respectively, and the fourth moving rod is in transmission connection with the second screw rod fixing seat and the third synchronous pulley respectively; the third clamping part and the fourth clamping part are the same in structure except for the installation positions, the third clamping part comprises a first moving block and a second clamping rod, the moving end of the third moving rod is fixedly connected with the first moving block, the second clamping rod is fixedly installed on the first moving block, and the first moving block and the second clamping rod are arranged on the top surface of the platform.

5. The cap placing and holding mechanism for paint production according to claim 4, characterized in that: The front-back moving clamping mechanism further comprises a second sliding rail and a second sliding block, the second sliding rail is fixedly installed on the top surface of the platform at the front-back positions of the middle part, the moving end of the second sliding rail is in sliding connection with the second sliding block, and the second sliding block is fixedly connected with the first moving block.

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