A piston ring assembly angle positioning tool

Abstract

This utility model relates to the field of gasoline engine piston ring assembly technology, specifically a piston ring assembly angle positioning tool, including a working plate and piston rings. Several support columns are fixed on the bottom surface of the working plate, and an expansion mechanism for expanding the piston rings is located at the top of the working plate. The drive end of a rotating mechanism is located at the bottom of the expansion mechanism, used to adjust the angle of the expansion mechanism on the horizontal plane. A moving mechanism is located on the top surface of the working plate, and the bottom of the rotating mechanism is located at the drive end of the moving mechanism, used to drive the rotating mechanism to move left and right. This utility model, by setting up an expansion mechanism, precisely expands the piston rings, realizing the function of flexibly adjusting the degree of expansion according to the inner diameter of the piston rings. Through the cooperation of the rotating mechanism and the moving mechanism, it achieves comprehensive adjustment of the horizontal position and angle of the piston rings, achieving flexible positioning according to the position of the external piston and fixing device.

Description

Technical Field

[0001] This utility model relates to the field of gasoline engine piston ring assembly technology, specifically a piston ring assembly angle positioning tool. Background Technology

[0002] In the field of gasoline engine piston ring assembly, the assembly quality has a direct and critical impact on the engine's power performance, fuel economy, and emission standards. Therefore, the requirements for assembly precision are much higher than those for ordinary mechanical parts.

[0003] In traditional assembly methods, workers often need to manually pry open gasoline engine piston rings using simple spreader pliers. This not only subjects workers to extremely high labor intensity, but also makes it difficult to precisely control the force and range of expansion manually, as gasoline engine piston rings are mostly made of high-strength alloy materials with a high elasticity coefficient. At the same time, the opening angle of the gasoline engine piston ring needs to be precisely aligned with the piston groove locating pin. Even a tiny error can cause combustion gas leakage, accelerating component wear. However, during manual assembly, the angle can only be judged by visual inspection and experience. In high-intensity assembly work, workers are prone to deviations due to fatigue, which can lead to overlapping or misalignment of the ring openings. This causes the piston rings to bear uneven stress during high-speed operation, significantly shortening their service life.

[0004] While existing semi-automatic assembly tools can replace some manual operations, they still have significant shortcomings in their adaptability to gasoline engine piston rings. Most tools use a fixed-stroke design for their expansion mechanisms, making them unsuitable for the diverse piston ring specifications required by different displacement gasoline engines. When a different model is needed, the entire expansion assembly often needs to be replaced, a time-consuming and labor-intensive process. Furthermore, these tools lack the function of coordinated adjustment of angle and position. When the positioning reference shifts due to differences in gasoline engine models, the tools cannot quickly calibrate, resulting in low assembly efficiency. Therefore, we propose a piston ring assembly angle positioning tool. Utility Model Content

[0005] The purpose of this utility model is to provide a piston ring assembly angle positioning tool. By setting an expansion mechanism, it solves the problem of adapting and expanding piston rings with different inner diameters; by using a rotation mechanism, it solves the problem of the difficulty in accurately adjusting the horizontal angle of the piston ring; by using a moving mechanism, it solves the problem of the difficulty in flexibly adjusting the left and right positions of the piston ring; at the same time, the cooperative design of each structure solves the problems of poor stability and low precision during assembly, so as to meet the positioning requirements of external pistons and fixing devices.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A piston ring assembly angle positioning tool includes a working plate and a piston ring. Several support columns are fixed on the bottom surface of the working plate. An expansion mechanism for expanding the piston ring is located above the top of the working plate. The expansion mechanism includes a mounting plate, two upright plates fixed to the top surface of the mounting plate, two moving rods slidably connected to the top surface of the mounting plate, two expansion blocks fixed to the top surface of the moving rods on the same side and used for expanding the piston ring, a bidirectional lead screw rotatably connected between the two upright plates and used to drive the two moving rods to move in opposite directions, and an expansion motor mounted on the outer wall of one of the upright plates and used to drive the bidirectional lead screw to rotate. The tool also includes: A rotating mechanism is provided above the top of the work plate and is used to adjust the angle of the mounting plate on the horizontal plane. The rotating mechanism includes a movable plate, a turntable fixed to the bottom surface of the mounting plate, a rotating roller fixed to the bottom surface of the turntable and rotatably connected to the top surface of the movable plate, and a rotating motor installed on the top surface of the movable plate and used to drive the rotating roller to rotate. A moving mechanism is provided on the top surface of the work plate and is used to drive the moving plate to move left and right. The moving mechanism includes two fixed plates fixed on the top surface of the work plate, an adjusting rod whose top is fixed to the bottom surface of the moving plate and whose bottom is slidably connected to the work plate, and a screw rotatably connected between the two fixed plates and used to drive the adjusting rod to move left and right.

[0007] In a preferred embodiment, the two expansion blocks are semi-cylindrical and symmetrical to each other, and the piston ring is in an expanded state and sleeved on the outer circumferential wall of the two expansion blocks; In a preferred embodiment, the two upright plates are fixed to the top surface of the mounting plate in a symmetrical manner from left to right. The expansion mechanism also includes two rotating columns that are rotatably connected to the two upright plates respectively. The two moving rods are threadedly connected to the outer circumference of the bidirectional lead screw in a symmetrical manner. The bidirectional lead screw is coaxially fixed between the two rotating columns and is arranged laterally. In a preferred embodiment, the expansion mechanism further includes a rotating rod coaxially fixed to one of the rotating columns at the end away from the bidirectional lead screw, a driven expansion gear and a driving expansion gear located above the top of the mounting plate and meshing with each other, and a rotating shaft coaxially connected to the output shaft of the expansion motor. The driving expansion gear is coaxially fixed to the outer circumference of the rotating shaft at the end away from the expansion motor, and the driven expansion gear is coaxially fixed to the outer circumference of the rotating rod at the end away from the rotating column on the same side. The diameter of the driving expansion gear is smaller than the size of the driven expansion gear. In a preferred embodiment, a horizontally arranged sliding groove is provided on the top surface of the mounting plate, and a slider that is slidably connected to the sliding groove on the top surface of the mounting plate is fixed on the bottom surface of the moving rod. These four settings ensure that the piston rings are stably fitted and evenly stressed, guaranteeing stability and safety during expansion; balance the force on the moving rod, ensuring a smooth and precise expansion process; make the power transmission of the expansion motor smoother, reducing the risk of piston ring damage; and stabilize the movement trajectory of the moving rod, improving expansion accuracy.

[0008] In a preferred embodiment, the turntable is fixed at the middle position of the bottom surface of the mounting plate, the top of the rotating roller is fixed at the bottom surface of the turntable near the edge, and the rotating mechanism also includes two rotating gears located between the turntable and the moving plate and meshing with each other, and a connecting column coaxially connected to the output shaft of the rotating motor, and the two rotating gears are respectively coaxially fixed on the outer circumferential wall of the rotating roller and the connecting column. This setting enables the rotary motor to precisely drive the mounting plate to rotate, ensuring the accuracy of piston ring angle adjustment.

[0009] In a preferred embodiment, the two fixed plates are fixed on the top surface of the working plate in a symmetrical manner and arranged from left to right. The moving mechanism also includes two connecting rods that are rotatably connected to the two fixed plates respectively, a moving motor installed on the outer wall of one of the fixed plates and whose output shaft is coaxially connected to the connecting rod on the same side, and a screw is coaxially fixed between the two connecting rods and arranged laterally, and the screw is threaded to the top of the adjusting rod. In a preferred embodiment, a horizontally oriented guide groove is provided on the top surface of the working plate, and a guide block is fixed on the bottom surface of the adjusting rod and slidably connected to the guide groove on the top surface of the working plate. The longitudinal cross-sectional shape of the guide groove on the top surface of the working plate is convex, and the shape of the guide block is convex, which matches the shape of the guide groove on the top surface of the working plate. These two settings enable the adjusting rod to move the moving plate smoothly, ensuring precise adjustment of the piston ring's left and right positions, making the adjusting rod move more stably, preventing deviation, and improving the accuracy of position adjustment.

[0010] In a preferred embodiment, a number of support columns at the bottom of the working plate are arranged in a matrix, a support plate is fixed on the bottom surface of the support columns, and an anti-slip plate adapted to the shape of the support plate is installed on the bottom surface of the support plate. This setting ensures the tool is placed stably, reduces the impact of vibration, and guarantees a stable assembly process.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model, through the setting of the expansion mechanism, wherein the bidirectional lead screw drives two moving rods to move in opposite directions under the drive of the expansion motor, so that the two expansion blocks can precisely expand the piston ring. Furthermore, the meshing of the driven expansion gear and the driving expansion gear realizes the deceleration transmission, ensuring that the expansion process is stable and controllable. At the same time, the slider at the bottom of the moving rod cooperates with the sliding groove of the mounting plate to ensure the precise movement trajectory of the expansion block. This realizes the function of flexibly adjusting the degree of expansion according to the inner diameter of the piston ring, achieving the effect of adapting to different specifications of piston rings and improving assembly versatility.

[0012] 2. This utility model utilizes the cooperation of a rotating mechanism and a moving mechanism. The rotating motor drives the rotating roller via a rotating gear, which in turn drives the turntable to rotate, thereby achieving precise adjustment of the horizontal angle of the piston ring. The moving motor drives the adjusting rod via a screw, which in turn drives the moving plate to move left and right. The convex fit between the guide block and the guide groove ensures stable movement. The combination of the two mechanisms achieves comprehensive adjustment of the horizontal position and angle of the piston ring, enabling flexible positioning based on the position of the external piston and the fixing device, thus improving assembly accuracy and efficiency. At the same time, the support column and anti-slip plate enhance the overall stability of the tool. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural diagram of the present invention; Figure 3 This is one of the exploded views of this utility model; Figure 4 This is the second partially exploded view of this utility model; Figure 5 This is an exploded view of the rotating mechanism in this utility model; Figure 6 This is a schematic diagram of the overall structure of the moving mechanism in this utility model; The meanings of the labels in the diagram are as follows: 1. Working plate; 11. Support column; 12. Support plate; 13. Anti-slip plate; 2. Piston ring; 3. Expansion mechanism; 31. Mounting plate; 32. Vertical plate; 33. Rotating column; 34. Two-way lead screw; 35. Expansion motor; 36. Moving rod; 37. Slider; 38. Expansion block; 39. Rotating rod; 310. Driven expansion gear; 311. Rotating shaft; 312. Driving expansion gear; 4. Rotating mechanism; 41. Turntable; 42. Moving plate; 43. Rotating roller; 44. Rotating motor; 45. Rotating gear; 46. Connecting column; 5. Moving mechanism; 51. Fixed plate; 52. Connecting rod; 53. Screw; 54. Adjusting rod; 55. Guide block; 56. Moving motor. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1 This utility model provides a technical solution: a piston ring assembly angle positioning tool, including a working plate 1 and a piston ring 2, with a plurality of support columns 11 fixed on the bottom surface of the working plate 1. By setting the working plate 1 and the plurality of support columns 11, a supporting foundation can be provided for positioning the piston ring 2.

[0016] In this embodiment, several support columns 11 at the bottom of the work plate 1 are arranged in a matrix. A support plate 12 is fixed on the bottom surface of the support columns 11, and an anti-slip plate 13 adapted to the shape of the support plate 12 is installed on the bottom surface of the support plate 12. The matrix arrangement of the support columns 11, support plate 12 and anti-slip plate 13 makes the tool stable, reduces vibration during assembly, enhances overall stability and ensures operational safety.

[0017] like Figures 1-4 As shown, in addition to the above, an expansion mechanism 3 for expanding the piston ring 2 is provided above the top of the working plate 1. The expansion mechanism 3 includes a mounting plate 31, two upright plates 32 fixed to the top surface of the mounting plate 31, two moving rods 36 slidably connected to the top surface of the mounting plate 31, two expansion blocks 38 fixed to the top surface of the moving rods 36 on the same side and used for expanding the piston ring 2, a bidirectional lead screw 34 rotatably connected between the two upright plates 32 and used to drive the two moving rods 36 to move in opposite directions, and an expansion motor 35 installed on the outer wall of one of the upright plates 32 and used to drive the bidirectional lead screw 34 to rotate. By setting the expansion mechanism 3, the piston ring 2 can be expanded according to the inner diameter of the piston ring 2.

[0018] Furthermore, the two expansion blocks 38 are semi-cylindrical and symmetrical to each other, and the piston ring 2 is fitted onto the outer circumference of the two expansion blocks 38 in an expanded state. The semi-cylindrical and symmetrical expansion blocks 38 ensure that the piston ring 2 is securely fitted during expansion, the force is evenly distributed, local deformation is avoided, and the expansion process is safe and reliable.

[0019] Specifically, two upright plates 32 are fixed symmetrically to the top surface of the mounting plate 31 from left to right. The expansion mechanism 3 also includes two rotating columns 33 that are rotatably connected to the two upright plates 32 respectively. Two moving rods 36 are threaded symmetrically to the outer circumference of the double-acting screw 34. The double-acting screw 34 is coaxially fixed between the two rotating columns 33 and is arranged laterally. Through the symmetrical upright plates 32, rotating columns 33, and the transverse double-acting screw 34, the moving rods 36 move synchronously and smoothly, with balanced force, thus improving the accuracy of the expansion action.

[0020] It is worth noting that the expansion mechanism 3 also includes a rotating rod 39 coaxially fixed to one end of one of the rotating columns 33 away from the end of the bidirectional lead screw 34, a driven expansion gear 310 and a driving expansion gear 312 located above the top of the mounting plate 31 and meshing with each other, and a rotating shaft 311 coaxially connected to the output shaft of the expansion motor 35. The driving expansion gear 312 is coaxially fixed to the outer circumference of the end of the rotating shaft 311 away from the expansion motor 35, and the driven expansion gear 310 is coaxially fixed to the outer circumference of the end of the rotating rod 39 away from the rotating column 33 on the same side. The diameter of the driving expansion gear 312 is smaller than that of the driven expansion gear 310. Through the rotating rod 39, the driven expansion gear 310, the driving expansion gear 312, and the rotating shaft 311, and with the driving gear having a smaller diameter, the power transmission of the expansion motor 35 is smoother, reducing the impact on the piston ring 2.

[0021] It is worth noting that a horizontally oriented groove is provided on the top surface of the mounting plate 31, and a slider 37 is fixed on the bottom surface of the moving rod 36, which is slidably connected to the groove on the top surface of the mounting plate 31. Through the groove of the mounting plate 31 and the slider 37 of the moving rod 36, the moving trajectory of the moving rod 36 is stable and does not deviate, ensuring the precise position of the expansion block 38 and improving assembly accuracy.

[0022] like Figure 1 , Figure 5 As shown, it is worth emphasizing that this piston ring assembly angle positioning tool also includes a rotating mechanism 4. The rotating mechanism 4 is located above the top of the work plate 1 and is used to adjust the angle of the mounting plate 31 on the horizontal plane. The rotating mechanism 4 includes a moving plate 42, a turntable 41 fixed to the bottom surface of the mounting plate 31, a rotating roller 43 fixed to the bottom surface of the turntable 41 and rotatably connected to the top surface of the moving plate 42, and a rotary motor 44 mounted on the top surface of the moving plate 42 for driving the rotating roller 43 to rotate. By setting the rotating mechanism 4, the turntable 41 can be driven to rotate, thereby adjusting the horizontal angle of the two expansion blocks 38 and the piston ring 2.

[0023] Furthermore, the turntable 41 is fixed at the center of the bottom surface of the mounting plate 31, and the top of the rotating roller 43 is fixed near the edge of the bottom surface of the turntable 41. The rotating mechanism 4 also includes two meshing rotating gears 45 located between the turntable 41 and the moving plate 42, and a connecting column 46 coaxially connected to the output shaft of the rotating motor 44. The two rotating gears 45 are respectively coaxially fixed on the outer circumference of the rotating roller 43 and the connecting column 46. Through the turntable 41, the rotating roller 43, the rotating gears 45, and the connecting column 46, the rotating motor 44 drives the mounting plate 31 to rotate smoothly, and the angle adjustment is precise to meet the assembly angle requirements.

[0024] like Figure 1 , Figure 6 As shown, this piston ring assembly angle positioning tool also includes a moving mechanism 5, which is disposed on the top surface of the work plate 1 and is used to drive the moving plate 42 to move left and right. The moving mechanism 5 includes two fixed plates 51 fixed to the top surface of the work plate 1, an adjusting rod 54 whose top is fixed to the bottom surface of the moving plate 42 and whose bottom is slidably connected to the work plate 1, and a screw 53 rotatably connected between the two fixed plates 51 and used to drive the adjusting rod 54 to move left and right. By setting the moving mechanism 5, the moving plate 42 can be driven to move in the left and right direction, thereby adjusting the left and right positions of the two expansion blocks 38 and the piston ring 2.

[0025] It is worth noting that the two fixed plates 51 are fixed to the top surface of the working plate 1 in a symmetrical arrangement from left to right. The moving mechanism 5 also includes two connecting rods 52 that are rotatably connected to the two fixed plates 51 respectively, a moving motor 56 installed on the outer wall of one of the fixed plates 51 with its output shaft coaxially connected to the connecting rod 52 on the same side, and a screw 53 coaxially fixed between the two connecting rods 52 and arranged laterally, with the screw 53 threaded to the top of the adjusting rod 54. Through the symmetrical fixed plates 51, connecting rods 52, moving motor 56 and transverse screw 53, the adjusting rod 54 drives the moving plate 42 to move smoothly, with precise left and right position adjustment to adapt to different installation positions.

[0026] More notably, a horizontally oriented guide groove is provided on the top surface of the working plate 1, and a guide block 55 is fixed to the bottom surface of the adjusting rod 54 and slidably connected to the guide groove on the top surface of the working plate 1. The longitudinal cross-sectional shape of the guide groove on the top surface of the working plate 1 is convex, and the shape of the guide block 55 is also convex, matching the shape of the guide groove on the top surface of the working plate 1. Through the convex guide groove of the working plate 1 and the convex guide block 55 of the adjusting rod 54, the adjusting rod 54 moves steadily without shaking, preventing deviation and further improving the position adjustment accuracy.

[0027] It should be added that the expansion motor 35, the rotary motor 44, and the moving motor 56 are all electrically connected to the external PLC and the external power supply respectively through wires, and the external PLC is also electrically connected to the external power supply through wires.

[0028] Finally, it should be noted that the expansion motor 35, rotary motor 44, and moving motor 56 involved in this utility model are all general standard parts or parts known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods. In the idle space of this device, all the above-mentioned electrical components, which refer to power elements, electrical components, and the matching controller and power supply, are connected by wires. The specific connection methods should refer to the working principle in this utility model. The electrical connections between each electrical component are completed in the order of operation. The detailed connection methods are all technologies known in the art.

[0029] In this embodiment, during actual use, the external PLC controls the opening and closing of the expansion motor 35, the rotary motor 44, and the moving motor 56 to achieve the assembly and positioning of the piston ring 2. When the piston ring 2 needs to be expanded, the PLC starts the expansion motor 35, which drives the active expansion gear 312 to rotate through the rotating shaft 311. The meshing driven expansion gear 310 causes the bidirectional lead screw 34 to rotate through the rotating rod 39 and the rotating column 33, driving the moving rod 36 to drive the expansion block 38 to move in the opposite direction, thus completing the expansion.

[0030] When adjusting the horizontal angle, the PLC starts the rotary motor 44, and the connecting column 46 drives the rotary gear 45 to drive the roller 43 to drive the turntable 41 and the mounting plate 31 to rotate, thereby realizing the adjustment of the horizontal angle of the piston ring 2.

[0031] When adjusting the left and right positions, the PLC starts the moving motor 56, the connecting rod 52 drives the screw 53 to rotate, which causes the adjusting rod 54 to move the moving plate 42, thus completing the left and right position adjustment of the piston ring 2. The precise coordination of each action achieves accurate positioning and assembly.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A piston ring assembly angle positioning tool, comprising a working plate (1) and a piston ring (2), characterized in that, Several support columns (11) are fixed on the bottom surface of the working plate (1). An expansion mechanism (3) for expanding the piston ring (2) is provided above the top of the working plate (1). The expansion mechanism (3) includes a mounting plate (31), two vertical plates (32) fixed on the top surface of the mounting plate (31), two moving rods (36) slidably connected to the top surface of the mounting plate (31), two expansion blocks (38) fixed on the top surface of the moving rods (36) on the same side and used for expanding the piston ring (2), a bidirectional lead screw (34) rotatably connected between the two vertical plates (32) and used to drive the two moving rods (36) to move in opposite directions, and an expansion motor (35) installed on the outer wall of one of the vertical plates (32) and used to drive the bidirectional lead screw (34) to rotate. It also includes: The rotating mechanism (4) is located above the top of the working plate (1) and is used to adjust the angle of the mounting plate (31) on the horizontal plane. The rotating mechanism (4) includes a moving plate (42), a turntable (41) fixed on the bottom surface of the mounting plate (31), a rotating roller (43) fixed on the bottom surface of the turntable (41) and rotatably connected to the top surface of the moving plate (42), and a rotating motor (44) installed on the top surface of the moving plate (42) and used to drive the rotating roller (43) to rotate. The moving mechanism (5) is set on the top surface of the working plate (1) and is used to drive the moving plate (42) to move left and right. The moving mechanism (5) includes two fixed plates (51) fixed on the top surface of the working plate (1), an adjusting rod (54) whose top is fixed on the bottom surface of the moving plate (42) and whose bottom is slidably connected to the working plate (1), and a screw (53) rotatably connected between the two fixed plates (51) and used to drive the adjusting rod (54) to move left and right.

2. The piston ring assembly angle positioning tool according to claim 1, characterized in that: The two expansion blocks (38) are semi-cylindrical and symmetrical to each other, and the piston ring (2) is in an expanded state and is fitted on the outer circumference of the two expansion blocks (38).

3. The piston ring assembly angle positioning tool according to claim 1, characterized in that: The two upright plates (32) are fixed on the top surface of the mounting plate (31) in a symmetrical manner from left to right. The expansion mechanism (3) also includes two rotating columns (33) that are rotatably connected to the two upright plates (32). The two moving rods (36) are threadedly connected to the outer circumference of the bidirectional screw (34) in a symmetrical manner. The bidirectional screw (34) is coaxially fixed between the two rotating columns (33) and is arranged laterally.

4. The piston ring assembly angle positioning tool according to claim 3, characterized in that: The expansion mechanism (3) further includes a rotating rod (39) coaxially fixed to one end of one of the rotating columns (33) away from the bidirectional lead screw (34), a driven expansion gear (310) and a driving expansion gear (312) located above the top of the mounting plate (31) and meshing with each other, and a rotating shaft (311) coaxially connected to the output shaft of the expansion motor (35). The driving expansion gear (312) is coaxially fixed to the outer circumference of the end of the rotating shaft (311) away from the expansion motor (35). The driven expansion gear (310) is coaxially fixed to the outer circumference of the end of the rotating rod (39) away from the rotating column (33) on the same side. The diameter of the driving expansion gear (312) is smaller than the size of the driven expansion gear (310).

5. The piston ring assembly angle positioning tool according to claim 1, characterized in that: The top surface of the mounting plate (31) is provided with a horizontally arranged sliding groove, and the bottom surface of the moving rod (36) is fixed with a slider (37) that is slidably connected to the sliding groove on the top surface of the mounting plate (31).

6. The piston ring assembly angle positioning tool according to claim 1, characterized in that: The turntable (41) is fixed at the middle position of the bottom surface of the mounting plate (31), and the top of the roller (43) is fixed at the bottom surface of the turntable (41) near the edge. The rotating mechanism (4) also includes two rotating gears (45) located between the turntable (41) and the moving plate (42) and meshing with each other, and a connecting column (46) coaxially connected to the output shaft of the rotating motor (44). The two rotating gears (45) are respectively coaxially fixed on the outer circumference of the roller (43) and the connecting column (46).

7. The piston ring assembly angle positioning tool according to claim 1, characterized in that: The two fixed plates (51) are fixed on the top surface of the working plate (1) in a symmetrical manner and arranged from left to right. The moving mechanism (5) also includes two connecting rods (52) that are rotatably connected to the two fixed plates (51) respectively, and a moving motor (56) installed on the outer wall of one of the fixed plates (51) with its output shaft coaxially connected to the connecting rod (52) on the same side. The screw (53) is coaxially fixed between the two connecting rods (52) and arranged in a horizontal manner. The screw (53) is threadedly connected to the top of the adjusting rod (54).

8. The piston ring assembly angle positioning tool according to claim 7, characterized in that: The top surface of the working plate (1) is provided with a guide groove arranged horizontally. The bottom surface of the adjusting rod (54) is fixed with a guide block (55) that is slidably connected to the guide groove on the top surface of the working plate (1). The longitudinal cross-sectional shape of the guide groove on the top surface of the working plate (1) is convex, and the shape of the guide block (55) is convex, which is adapted to the shape of the guide groove on the top surface of the working plate (1).

9. The piston ring assembly angle positioning tool according to claim 1, characterized in that: The working plate (1) has several support columns (11) arranged in a matrix at the bottom. A support plate (12) is fixed on the bottom surface of the support column (11), and an anti-slip plate (13) that matches its shape is installed on the bottom surface of the support plate (12).

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