A piston clamping structure

Abstract

The utility model discloses a piston clamping structure, including a frame and a clamping mechanism, wherein the clamping mechanism includes a mounting seat arranged on the frame, a positioning claw rotatably connected to the mounting seat, a rotating mechanism arranged on the mounting seat, and a clamping mechanism arranged on the mounting seat, wherein the positioning claw is provided with a convex portion matching the inner cavity of the piston and a suction cup arranged on the convex portion, and the clamping mechanism includes a driving motor, a swing arm arranged on the output shaft driving motor, and a pressure block rotatably connected to the end of the swing arm, wherein the pressure block presses the piston on the positioning claw; and the rotating mechanism is used to drive the positioning claw to rotate. The piston clamping structure provided by the utility model can stably fix the piston and drive the piston to rotate one circle, so that the printing equipment can print molybdenum disulfide on the piston skirt.

Description

Technical Field

[0001] The utility model relates to the technical field of piston printing equipment, in particular to a piston clamping structure. Background Art

[0002] In engines, pistons are widely used, such as Figure 1 As shown, the piston n includes a piston top n1 and a piston skirt n2, and the piston skirt n2 is close to the piston top n1 to form the lower half of the piston n. The piston is a key component of a fuel engine. When the fuel is burned, the piston reciprocates along the cylinder wall. The piston skirt acts on the cylinder wall, which easily causes the piston skirt or cylinder wall surface to wear. In order to reduce the wear of the piston skirt or cylinder wall, in addition to adding lubricants, it is also necessary to print a molybdenum disulfide coating on the piston skirt surface to improve the self-lubrication and wear resistance of the piston.

[0003] However, in the existing molybdenum disulfide printing equipment, the clamping of the piston is unstable, resulting in poor quality of the molybdenum disulfide printed on the piston skirt, and thus the self-lubrication and wear resistance of the piston cannot be guaranteed.

[0004] It can be seen that the existing technology still needs to be improved and enhanced. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present utility model is to provide a piston clamping structure, aiming to solve the technical problem of unstable piston clamping.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A piston clamping structure includes a frame and a clamping mechanism, wherein the clamping mechanism includes a mounting seat arranged on the frame, a positioning claw rotatably connected to the mounting seat, a rotating mechanism arranged on the mounting seat, and a clamping mechanism arranged on the mounting seat, wherein the positioning claw is provided with a convex portion matching the inner cavity of the piston and a suction cup arranged on the convex portion, the clamping mechanism includes a driving motor, a swing arm arranged on the output shaft driving motor, and a pressure block rotatably connected to the end of the swing arm, the pressure block presses the piston onto the positioning claw; the rotating mechanism is used to drive the positioning claw to rotate.

[0008] Furthermore, the rotating mechanism includes a lifting assembly arranged on the frame, a rack arranged vertically slidably on the mounting seat, a driving pulley rotatably connected to the mounting seat, a driven pulley arranged on the positioning claw, and a transmission belt sleeved on the driving pulley and the driven pulley, the driving pulley is provided with a gear meshing with the rack, and the lifting assembly is used to push the rack to move upward.

[0009] Furthermore, the rotating mechanism also includes a first adjusting seat arranged on the mounting seat and a tensioning pulley rotatably connected to the first adjusting seat, and the transmission belt is wound around the tensioning pulley.

[0010] Furthermore, a first impact block is provided at the upper end of the rack and a second impact block is provided at the lower end, and a first sensor for detecting the position of the first impact block and a first limit block for limiting the position of the second impact block are provided on the mounting seat.

[0011] Furthermore, the positioning claw includes a connecting shaft rotatably connected to the mounting seat, and a mounting platform connected to the connecting shaft, the convex portion is arranged on the mounting platform, the driven pulley is arranged on the connecting shaft, a through hole extending along its axial center line is opened in the connecting shaft, one end of the through hole is connected to a rotating joint, and the other end thereof extends to the convex portion.

[0012] Furthermore, it also includes a visual sensor located above the positioning claw, and two symmetrically arranged positioning blocks are provided on the mounting platform. The visual sensor is used to detect the deflection angle of the piston.

[0013] Furthermore, it also includes a lifting mechanism, the mounting seat includes a base arranged on the frame and a movable plate vertically slidably arranged on the base, the lifting mechanism includes a linear module, and a top block arranged at the output end of the linear module, the top block is used to push the movable plate to move upward, and the lifting assembly is installed at the output end of the linear module.

[0014] Furthermore, a third impact block is provided on the movable plate, and a second limit block for limiting the position of the third impact block and a second sensor for detecting the position of the third impact block are provided on the upper part of the base.

[0015] Furthermore, it also includes a turntable rotatably arranged on the frame, a plurality of clamping mechanisms are arranged on the turntable in a circular array, and a plurality of lifting mechanisms are installed on the frame.

[0016] Furthermore, a rotating motor is provided on the frame, and the turntable is installed at the output end of the rotating motor.

[0017] Beneficial effects: The piston clamping structure provided by the utility model locates the position of the piston by arranging a convex portion and a suction cup on the positioning claw, and the pressure block is pressed against the piston under the drive of the driving motor to achieve stable fixation of the piston; in addition, a rotating mechanism is also provided to drive the positioning claw to rotate, which can drive the piston to rotate one circle, so that the printing equipment can print molybdenum disulfide on the piston skirt. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of the piston.

[0019] Figure 2 The three-dimensional piston clamping structure provided by the utility model Figure 1 .

[0020] Figure 3 The three-dimensional piston clamping structure provided by the utility model Figure 2 .

[0021] Figure 4 The utility model provides a three-dimensional rotating mechanism in the piston clamping structure Figure 1 .

[0022] Figure 5 The utility model provides a three-dimensional rotating mechanism in the piston clamping structure Figure 2 .

[0023] Figure 6 This is a three-dimensional diagram of the positioning claws in the piston clamping structure provided by the utility model.

[0024] Description of the main component symbols: frame 1, clamping mechanism 2, mounting seat 3, base 31, movable plate 32, third impact block 33, second limit block 34, second sensor 35, positioning claw 4, convex part 41, suction cup 42, connecting shaft 43, mounting table 44, rotary joint 45, positioning block 46, rotating mechanism 5, lifting assembly 51, rack 52, first impact block 521, second impact block 522, first sensor 523, first limit block 524, driving pulley 53, second adjustment seat 531, second waist hole 532, driven pulley 54, transmission belt 55, gear 56, first adjustment seat 57, tensioning pulley 571, first waist hole 572, clamping mechanism 6, drive motor 61, swing arm 62, pressure block 63, visual sensor 7, lifting mechanism 8, linear module 81, top block 82, turntable 9, piston n, piston top n1, piston skirt n2. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 2-6 The utility model provides a piston clamping structure, including a frame 1 and a clamping mechanism 2, the clamping mechanism 2 includes a mounting seat 3 arranged on the frame 1, a positioning claw 4 rotatably connected to the mounting seat 3, a rotating mechanism 5 arranged on the mounting seat 3, and a clamping mechanism 6 arranged on the mounting seat 3, the positioning claw 4 is provided with a convex portion 41 matching the inner cavity of the piston and a suction cup 42 arranged on the convex portion 41, the clamping mechanism 6 includes a driving motor 61, a swing arm 62 arranged on the output shaft of the driving motor 61 and a pressure block 63 rotatably connected to the end of the swing arm 62, the pressure block 63 presses the piston on the positioning claw 4; the rotating mechanism 5 is used to drive the positioning claw 4 to rotate.

[0027] During printing, the rotating mechanism 5 drives the positioning claw 4 to rotate, thereby driving the piston to rotate one circle, so that the printing equipment can print molybdenum disulfide on the surfaces of the two piston skirts n2 in sequence.

[0028] In a preferred embodiment, see Figure 3 , 4 The rotating mechanism 5 includes a lifting assembly 51 disposed on the frame 1, a rack 52 disposed on the mounting seat 3 in a vertically slidable manner, a driving pulley 53 rotatably connected to the mounting seat 3, a driven pulley 54 disposed on the positioning claw 4, and a transmission belt 55 sleeved on the driving pulley 53 and the driven pulley 54. The driving pulley 53 is provided with a gear 56 meshed with the rack 52. The lifting assembly 51 is used to push the rack 52 to move upward. The lifting assembly 51 drives the rack 52 to move upward, and the rack 52 meshes with the gear 56 to drive the driving pulley 53 to rotate, so that the positioning claw 4 rotates, and the driving piston rotates one circle.

[0029] Preferably, the lifting assembly 51 is an electric push rod. When the extension rod of the electric push rod is extended, the rack 52 is pushed to move upward; when the extension rod of the electric push rod is retracted, the rack 52 slides downward and resets due to its own weight.

[0030] Further, see Figure 4 The rotating mechanism 5 further includes a first adjusting seat 57 disposed on the mounting seat 3 and a tensioning pulley 571 rotatably connected to the first adjusting seat 57, and the transmission belt 55 is wound around the tensioning pulley 571. The tensioning pulley 571 is provided to facilitate adjusting the tension of the transmission belt 55. Specifically, a first waist hole 572 extending in the horizontal direction is formed on the first adjusting seat 57, and the first waist hole 572 is fixed to the mounting seat 3 by screws to adjust the installation position of the tensioning pulley 571.

[0031] Optionally, a second adjustment seat 531 is provided on the mounting seat 3, and the gear 56 and the driving pulley 53 are both rotatably provided on the second adjustment seat 531. Similarly, a second waist hole 532 extending in the horizontal direction is opened on the second adjustment seat 531, and the second waist hole 532 is fixed to the mounting seat 3 by screws to adjust the distance between the gear 56 and the rack 52 to ensure that the gear 56 and the rack 52 are engaged.

[0032] For further information, see Figure 5 The upper end of the rack 52 is provided with a first collision block 521 and the lower end is provided with a second collision block 522. The mounting seat 3 is provided with a first sensor 523 for detecting the position of the first collision block 521 and a first limit block 524 for limiting the position of the second collision block 522. The lifting assembly 51 drives the rack 52 to move upward, and the second collision block 522 collides with the first limit block 524, that is, the piston has rotated one circle; the rack 52 moves downward due to its own weight, and the first sensor 523 detects the first collision block 521, that is, the rack 52 has been reset.

[0033] In a preferred embodiment, see Figure 6 The positioning claw 4 includes a connecting shaft 43 rotatably connected to the mounting seat 3, and a mounting platform 44 connected to the connecting shaft 43. The convex portion 41 is arranged on the mounting platform 44, and the driven pulley 54 is arranged on the connecting shaft 43. A through hole extending along the axis of the connecting shaft 43 is opened in the connecting shaft 43. A rotary joint 45 is connected to one end of the through hole, and the other end of the rotary joint 45 extends to the convex portion 41. The suction cup 42 is connected to the end of the through hole located on the convex portion 41. The rotary joint 45 is provided to ensure the stability of the connection between the rotary joint 45 and the through hole when the positioning claw 4 rotates.

[0034] In a preferred embodiment, see Figure 2 , and also includes a visual sensor 7 located above the positioning claw 4. Two symmetrically arranged positioning blocks 46 are provided on the mounting platform 44. The visual sensor 7 is used to detect the deflection angle of the piston. The positioning block 46 is located between the two piston skirts n2. The positioning block 46 is made of black rubber. The visual sensor 7 measures the deflection angle of the piston by detecting the distance between the edge of the positioning block 46 and the edge of the piston skirt, so that in the subsequent printing process, the rotating mechanism 5 can drive the piston to rotate to the correct position.

[0035] Optionally, a fill light is provided beside the visual sensor 7 , and the fill light is used to increase the brightness of the surrounding environment to ensure the shooting quality of the visual sensor 7 .

[0036] In a preferred embodiment, see Figure 3 , 4 , and also includes a lifting mechanism 8, the mounting seat 3 includes a base 31 arranged on the frame 1 and a movable plate 32 arranged on the base 31 in a vertically slidable manner, wherein the positioning claw 4, the driving pulley 53 and the tensioning pulley 571 are all rotatably connected to the movable plate 32, and the rack 52 is slidably connected to the movable plate 32; the lifting mechanism 8 includes a linear module 81, and a top block 82 arranged at the output end of the linear module 81, the top block 82 is used to push the movable plate 32 to move upward, and the lifting assembly 51 is installed at the output end of the linear module 81. The linear module 81 drives the top block 82 to move upward synchronously with the lifting assembly 51, so that the top block 82 pushes the movable plate 32 to move upward, so that the piston moves to the designated position to wait for the printing of the molybdenum disulfide coating, and then the lifting assembly 51 drives the rack 52 to move upward, the piston rotates one circle, and the printing equipment can print molybdenum disulfide on the two piston skirts of the piston. When the linear module 81 drives the top block 82 to move downward, the movable plate 32 slides downward and resets due to its own weight.

[0037] Further, see Figure 5The movable plate 32 is provided with a third collision block 33, and the upper part of the base 31 is provided with a second stop block 34 for limiting the position of the third collision block 33, and the lower part is provided with a second sensor 35 for detecting the position of the third collision block 33. When the movable plate 32 moves upward and the third collision block 33 abuts against the second stop block 34, the movable plate 32 moves to the printing station; when the movable plate 32 moves downward due to its own weight, the second sensor 35 detects the third collision block 33, and the movable plate 32 is reset.

[0038] In a preferred embodiment, see Figure 2 , further comprising a turntable 9 rotatably arranged on the frame 1, a plurality of clamping mechanisms 2 arranged on the turntable 9 in a circumferential array, and a plurality of lifting mechanisms 8 installed on the frame 1. Preferably, there are four clamping mechanisms 2, and the four clamping mechanisms 2 are respectively installed on the turntable 9; there are two lifting mechanisms 8; and there are two visual sensors 7. Four processing stations are arranged on the frame 1, namely: a loading station, a printing station, a detection station, and a unloading station; one lifting mechanism 8 is installed on the printing station, and another lifting mechanism 8 is installed on the detection station; one visual sensor 7 is installed on the loading station, and another visual sensor 7 is installed on the detection station.

[0039] The four clamping mechanisms 2 are driven by the turntable 9 to rotate to the four stations in sequence. When the clamping mechanism 2 is located at the loading station, the piston can be placed on the positioning claw 4 of the clamping mechanism 2 by a manipulator, the clamping mechanism 6 and the positioning claw 4 cooperate to fix the piston, and the visual sensor 7 located above detects the deflection angle of the piston; when the clamping mechanism 2 moves to the printing station, the lifting mechanism 8 drives the movable plate 32 to move upward, and the piston moves to the top. At the same time, the lifting assembly 51 drives the rack 52 to move upward a short distance, so that the piston rotates to the correct position. During the process, the lifting assembly 51 continues to drive the rack 52 to move upward, the piston rotates one circle, and the printing equipment prints molybdenum disulfide on the piston skirt; when the clamping mechanism 2 moves to the detection station, the lifting mechanism 8 and the rotating mechanism 5 cooperate to make the piston move upward and rotate one circle. The visual sensor 7 on this station detects the printing quality of the molybdenum disulfide coating on the piston. When the clamping mechanism 2 moves to the unloading station, the piston on the positioning claw 4 can be removed by another manipulator. By repeating the above actions, the function of automatically printing molybdenum disulfide on the piston can be realized, thereby improving production efficiency.

[0040] Furthermore, a rotating motor is provided on the frame 1, and a turntable 9 is installed at the output end of the rotating motor. The rotating motor drives the turntable 9 to rotate at a certain angle so that each clamping mechanism 2 can rotate to each workstation.

[0041] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and the utility model concept of the utility model, and all these changes or substitutions should fall within the protection scope of the utility model.

Claims

1. A piston clamping structure, characterized in that: It includes a frame and a clamping mechanism, wherein the clamping mechanism includes a mounting seat arranged on the frame, a positioning claw rotatably connected to the mounting seat, a rotating mechanism arranged on the mounting seat, and a pressing mechanism arranged on the mounting seat, wherein the positioning claw is provided with a convex portion matching the inner cavity of the piston and a suction cup arranged on the convex portion, and the pressing mechanism includes a driving motor, a swing arm arranged on the output shaft driving motor, and a pressing block rotatably connected to the end of the swing arm, and the pressing block presses the piston onto the positioning claw; The rotating mechanism is used to drive the positioning claw to rotate.

2. The piston clamping structure according to claim 1, characterized in that: The rotating mechanism includes a lifting assembly arranged on the frame, a rack arranged on the mounting seat in a vertically slidable manner, a driving pulley rotatably connected to the mounting seat, a driven pulley arranged on the positioning claw, and a transmission belt sleeved on the driving pulley and the driven pulley, the driving pulley is provided with a gear meshing with the rack, and the lifting assembly is used to push the rack to move upward.

3. The piston clamping structure according to claim 2, characterized in that: The rotating mechanism also includes a first adjusting seat arranged on the mounting seat and a tensioning belt wheel rotatably connected to the first adjusting seat, and the transmission belt is wound around the tensioning belt wheel.

4. The piston clamping structure according to claim 2, characterized in that: The upper end of the rack is provided with a first collision block and the lower end is provided with a second collision block, and the mounting seat is provided with a first sensor for detecting the position of the first collision block and a first limit block for limiting the position of the second collision block.

5. The piston clamping structure according to claim 1, characterized in that: The positioning claw includes a connecting shaft rotatably connected to the mounting seat, and a mounting platform connected to the connecting shaft, the convex portion is arranged on the mounting platform, the driven pulley is arranged on the connecting shaft, a through hole extending along its axis is opened in the connecting shaft, one end of the through hole is connected to a rotating joint, and the other end thereof extends to the convex portion.

6. The piston clamping structure according to claim 5, characterized in that: It also includes a visual sensor located above the positioning claw. Two symmetrically arranged positioning blocks are provided on the mounting platform. The visual sensor is used to detect the deflection angle of the piston.

7. The piston clamping structure according to claim 2, characterized in that: It also includes a lifting mechanism, the mounting seat includes a base arranged on the frame and a movable plate arranged on the base in a vertically slidable manner, the lifting mechanism includes a linear module and a top block arranged at the output end of the linear module, the top block is used to push the movable plate to move upward, and the lifting assembly is installed at the output end of the linear module.

8. The piston clamping structure according to claim 7, characterized in that: The movable plate is provided with a third collision block, and the upper part of the base is provided with a second limit block for limiting the position of the third collision block and a second sensor for detecting the position of the third collision block.

9. The piston clamping structure according to claim 7, characterized in that: It also includes a turntable rotatably arranged on the frame, a plurality of clamping mechanisms are arranged on the turntable in a circumferential array, and a plurality of lifting mechanisms are installed on the frame.

10. The piston clamping structure according to claim 9, characterized in that: The frame is provided with a rotating motor, and the turntable is installed at the output end of the rotating motor.

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