Piston cylinder maintenance tool

Abstract

The utility model relates to the technical field of automobile coating equipment maintenance, in particular to a piston cylinder maintenance tool which comprises a working table, a clamping and positioning device and a piston pushing device, and the clamping and positioning device comprises a sliding block, a connecting assembly, a guide bottom plate, a first driving piece and a sliding groove block installed on the top of the guide bottom plate. The number of the sliding groove blocks is at least three, the sliding groove blocks are evenly distributed in the circumferential direction of any vertical line perpendicular to the table top of the workbench, each sliding block is in sliding connection with one sliding groove block, the sliding direction is perpendicular to the vertical line, each connecting assembly is in sliding connection with two adjacent sliding blocks at the same time, and the piston pushing device comprises a fixing support and a second driving part; the second driving piece is used for pushing the piston to move in the vertical direction. According to the tool, the positioning and clamping device is used for positioning and clamping the cylinder body, it is guaranteed that the axis of the cylinder body and the axis of the second driving piece are collinear, it is guaranteed that the piston can be horizontally pressed into the cylinder body, deviation is avoided when the piston is pressed into the cylinder body, and the assembly quality of the piston cylinder is better.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile coating equipment maintenance, more particularly to a piston cylinder maintenance tool. BACKGROUND

[0002] In the automobile spraying process, in order to realize that a single production line produces more color car body, the paint output from the paint gun station is input to a single auxiliary paint cylinder through the valve group of the color changing device, and then filled into the main paint cylinder, and finally sprayed on the car body. During the spraying operation, the cylinder piston needs to be reciprocated continuously, and the piston sealing ring and sealing strip are prone to wear and need to be replaced regularly to ensure that the piston sealing state is good and to avoid paint leakage and color mixing.

[0003] The maintenance of the paint piston cylinder is divided into two steps of disassembly and installation. During the installation process, the piston cylinder is usually placed on a spring scale of another special tool, the spring scale is placed below a hand-operated screw rod, the piston is pressed into the cylinder by hand operation, the pressing force is controlled and adjusted by observing the reading on the spring scale, and the pressing speed is controlled by the speed of hand operation. However, this method lacks positioning of the cylinder, and the piston is prone to be pressed in at an offset position, which may cause the piston to be pressed in at an unlevel position and affect the assembly quality. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming the problem that the existing cylinder piston separation process lacks positioning and is prone to offset installation, and provides a piston cylinder maintenance tool which can position the cylinder when the piston is pressed into the cylinder, so that the piston can be pressed into the cylinder horizontally and the assembly quality is ensured.

[0005] To solve the above technical problems, the utility model adopts the technical scheme that:

[0006] The utility model provides a piston cylinder maintenance frock, including workbench, clamping positioning device and piston pushing device, the clamping positioning device includes sliding block, connecting assembly, the guide bottom plate of installation on the workbench, the first drive piece of installation on the workbench and the sliding groove block of installation on the top of guide bottom plate, the top of guide bottom plate is set up and places the placement slot of piston cylinder, the sliding groove block has at least three and evenly distributes along the any vertical line of workbench perpendicular to the surface of the week, each sliding block is connected with a sliding groove block and the sliding direction is perpendicular to the vertical line, the connecting assembly is provided with a plurality of and is located between two adjacent sliding blocks, each connecting assembly is connected with two adjacent sliding blocks simultaneously, the first drive piece is linear drive piece, and the output end of first drive piece is fixedly connected with sliding block or connecting assembly, the piston pushing device includes the fixed support of installation on the workbench and the second drive piece of installation on the fixed support, and the second drive piece is linear drive piece, and the driving direction of second drive piece is along the direction of vertical line, and the second drive piece is used for pushing the piston of piston cylinder and moves along the vertical direction.

[0007] The utility model discloses a piston cylinder maintenance frock, because the output shaft of first drive piece is fixedly connected with sliding block or connecting assembly, so first drive piece can drive sliding block and slide along sliding groove block, because connecting assembly is connected with two adjacent sliding blocks simultaneously, so all sliding blocks can slide synchronously, in the assembly process of piston assembly, the operator first places the bottom surface of cylinder in the placement slot, then carries out the positioning clamping procedure of cylinder, first starts first drive piece, drives sliding block and slide to the direction close to cylinder, if cylinder is not at the positioning position at this time, then the sliding block first contacted with the lateral wall of cylinder will push cylinder and move, until all sliding blocks are abutted with the outer wall of cylinder simultaneously, the axis of cylinder is collinear with vertical line, here, first drive piece continuously exerts the propelling force, so each sliding block provides a clamping force to cylinder, makes cylinder be clamped in the positioning position, completes the positioning clamping procedure of cylinder, then carries out piston press-in procedure, places the piston to be pressed in the press-in end of cylinder, then starts second drive piece, and second drive piece will push piston and move along the vertical direction, and press in the piston in cylinder, complete piston press-in procedure, until the piston is completely pressed in and completes, can make first drive piece and second drive piece reverse, and sliding block slides to the direction away from the axis of cylinder, and second drive piece leaves cylinder, at this time, the assembled piston cylinder can be taken out, the positioning clamping device is used to the cylinder in this dismounting tool, guarantees the axis of cylinder and the axis of second drive piece collinear, guarantees that piston can be pressed in cylinder horizontally, avoids the deflection when pressing in piston, makes the quality of piston cylinder assembly better.

[0008] Further, the connecting assembly comprises a connecting block, an upper slide rod fixedly connected with the connecting block, and a lower slide rod fixedly connected with the connecting block, and the upper slide rod and the lower slide rod are respectively in sliding connection with two slide blocks. The sliding of the slide blocks in the slide groove blocks can drive the upper slide rod and the lower slide rod to slide in the slide blocks, and meanwhile, when the other slide blocks relatively slide in the corresponding upper slide rod or lower slide rod, the upper slide rod or lower slide rod can also drive the other slide blocks to slide in the slide rail blocks, so as to realize the synchronous sliding of all the slide blocks.

[0009] Further, the top of the guide bottom plate is further provided with guide grooves equal in number to the connecting blocks, and the connecting blocks are in sliding connection with the guide grooves and the sliding direction is perpendicular to the vertical line. The guide grooves are arranged to limit the connecting blocks to slide along the guide grooves, so as to provide more limiting for the sliding of the slide blocks and ensure that all the slide blocks can realize synchronous movement without deviation, so that the positioning accuracy is better and the piston can be horizontally pressed into the cylinder block to ensure the assembly quality.

[0010] Further, the output end of the first driving member is fixedly connected with one of the slide blocks and the driving direction is the same as the sliding direction of the slide block. The driving direction is consistent with the sliding direction of the slide block, so as to reduce the loss of driving force.

[0011] Further, the side of the slide block close to the vertical line is fixedly provided with a pressing block, the pressing block is in threaded connection with the slide block, and the side of the pressing block close to the vertical line is in arc shape. The arc-shaped pressing block has a larger contact area with the outer wall of the cylinder block, so that the clamping effect is better and the cylinder block is more stable, and the pressing block is in threaded connection with the slide block, so that the threaded connection is convenient to disassemble and assemble and replace, so that different slide blocks can be replaced according to the size of the cylinder block, and the applicability is better.

[0012] Further, the tool further comprises a separation sleeve, the separation sleeve is arranged in the placement groove, the separation sleeve is used for supporting the bottom of the cylinder block, and the inner diameter of the separation sleeve is greater than the outer diameter of the piston. When the tool is used to separate the piston, the separation sleeve is arranged in the placement groove, the piston cylinder is arranged on the top of the separation sleeve, the piston cylinder is elevated, the top of the separation sleeve abuts against the bottom of the cylinder block, and then the positioning and clamping process is performed and the piston separation process is performed, the second driving member is started, and the second driving member pushes the piston to move in the cylinder block. Since the inner diameter of the separation sleeve is greater than the diameter of the piston, the piston can be pushed to fall into the separation sleeve, the piston separation process is completed, the disassembly and assembly of the piston cylinder share one set of tool, and the tool does not need to be frequently replaced, so that the convenience is better.

[0013] Further, the side wall of the separation sleeve is provided with an observation groove, and the observation groove is communicated to the inner cavity of the separation sleeve. When the piston separation process is performed, whether the piston is successfully separated can be observed through the observation groove, and the cylinder block does not need to be taken out for observation, so that the convenience is better.

[0014] Further, the pneumatic control assembly further comprises a pressure regulating assembly, a first reversing valve mounted on the workbench and a second reversing valve mounted on the workbench, the first driving member and the second driving member are both air cylinders, the pressure regulating assembly is connected with a gas source, the first reversing valve is connected with the pressure regulating assembly through an air pipe, the second reversing valve is connected with the pressure regulating assembly through an air pipe, two output ends of the first reversing valve are respectively connected with two ends of a cylinder body of the first driving member through air pipes, and two output ends of the second reversing valve are respectively connected with two ends of a cylinder body of the second driving member through air pipes. The pressure regulating assembly can control the gas pressure within a certain range, realize stable pressure, make the piston press in more stably, and make the installation effect better, and the first reversing valve and the second reversing valve can change the direction of the gas pressure, so that the driving direction of the first driving member or the second driving member is changed.

[0015] Further, the pneumatic control assembly further comprises a first speed regulating valve arranged at the input end of the first driving member and a second speed regulating valve arranged at the input end of the second driving member. The first speed regulating valve controls the speed of the piston press in or separation by controlling the flow, avoids unstable caused by too fast speed of the piston, and reduces the installation quality, and the second speed regulating valve can avoid that the cylinder body is pushed down by the slider because of too fast speed of the slider.

[0016] Further, the bottom of the workbench is provided with a horizontal adjusting bolt which is threadedly connected with the workbench. When the ground at the bottom of the workbench is not flat enough, the horizontal adjusting bolt can be adjusted to ensure that the table top of the workbench is in a horizontal position, the piston is horizontally pressed in, and the installation quality is ensured.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] 1. The positioning and clamping device is used for positioning and clamping the cylinder body, the axis of the cylinder body and the axis of the second driving member are collinear, the piston can be horizontally pressed into the cylinder body, the piston is prevented from being deviated when being pressed in, and the quality of the piston cylinder assembly is better.

[0019] 2. The circular-arc-shaped slider has a larger contact area with the outer wall of the cylinder body, the clamping effect is better, the cylinder body is more stable, the pressing block and the slider are threadedly connected, the threaded connection is convenient to disassemble and assemble, the pressing block can be conveniently disassembled and replaced, different sliders can be replaced according to the size of the cylinder body, and the applicability is better.

[0020] 3. The separating sleeve is arranged and used when the piston separation process is performed, the piston cylinder disassembly and assembly share one set of tool, the tool does not need to be frequently replaced, and the convenience is better.

[0021] 4. The pneumatic control assembly is arranged, the functions of pressure regulating, speed regulating and reversing are completed, the piston is pressed in more stably, and the installation quality is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structural schematic view of a piston cylinder repair tool;

[0023] Figure 2 It is a structural schematic view of a clamping positioning device;

[0024] Figure 3 It is Figure 2 a partial enlarged view of the A position of the piston cylinder repair tool;

[0025] Figure 4 It is a structural schematic view of a piston pushing device;

[0026] Figure 5 It is a structural schematic view of a pneumatic control assembly.

[0027] In the drawings: 100, workbench; 110, table plate; 120, supporting leg; 130, horizontal adjusting bolt; 200, clamping positioning device; 210, guiding bottom plate; 211, placing groove; 212, guiding groove; 220, first driving piece; 230, sliding block; 240, connecting assembly; 241, connecting block; 242, upper sliding rod; 243, lower sliding rod; 250, sliding groove block; 260, pressing block; 300, piston pushing device; 310, fixed support; 320, second driving piece; 400, separating sleeve; 410, observation groove; 500, pneumatic control assembly; 510, pressure regulating assembly; 520, first reversing valve; 530, second reversing valve; 540, first speed regulating valve; 550, second speed regulating valve. DETAILED DESCRIPTION

[0028] The utility model will be further explained in combination with specific implementation. Among them, the drawings are only used for example explanation, and the representation is only a schematic diagram, and cannot be understood as the limitation of the patent, in order to better explain the embodiment of the utility model, some components of the drawings will be omitted, enlarged or reduced, and the size of actual product is not represented, and it is understandable for those skilled in the art that some known structures and their description in the drawings can be omitted.

[0029] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0030] Example 1

[0031] A piston cylinder repair tool, such as Figures 1-4 As shown, the device includes a worktable 100, a clamping and positioning device 200, and a piston pushing device 300. The clamping and positioning device 200 includes a hexagonal guide base plate 210, a first driving member 220, six sliders 230, six connecting assemblies 240, and six sliding blocks 250 mounted on the top surface of the guide base plate 210. The worktable 100 includes a tabletop 110, four support legs 120 mounted on the bottom of the tabletop 110, and horizontal adjusting bolts 130 threaded to the bottom of the table legs. The first driving member 220 and the piston pushing device 300... The guide base plates 210 are all mounted on the top surface of the tabletop 110. The top of the guide base plate 210 has a placement groove 211 for placing the piston cylinder. There are at least three sliding blocks 250, evenly distributed circumferentially along any vertical line perpendicular to the worktable surface. Each slider 230 is slidably connected to one sliding block 250, with the sliding direction perpendicular to the vertical line. A pressure block 260 is fixed to the side of the slider 230 closest to the vertical line. There are three pressure blocks 260, evenly distributed circumferentially along the vertical line. The pressure blocks 260 and sliders 230... The connection can be 0 threaded, or it can be a pin connection, snap-fit ​​connection, or other detachable connection methods. The pressure block 260 is arc-shaped on the side near the vertical line. Each connecting component 240 is located between two adjacent sliders 230. In this embodiment, each connecting component 240 includes a connecting block 241, an upper sliding rod 242 fixedly connected to the connecting block 241, and a lower sliding rod 243 fixedly connected to the connecting block 241. The upper sliding rod 242 and the lower sliding rod 243 are slidably connected to two adjacent sliders 230 respectively. The top of the guide base plate 210 is also provided with six guide grooves 212. Each connecting block 241 is slidably connected to the guide groove 212 and the sliding direction is perpendicular to the vertical line. The first driving member 220 is a linear driving member. The piston pushing device 300 includes a fixed bracket 310 mounted on the worktable 100 and a second driving member 320 mounted on the fixed bracket 310. The second driving member 320 is a linear driving member. The driving direction of the second driving member 320 is to push the piston of the piston cylinder to move in the vertical direction.

[0032] The working principle of the embodiment is as follows:

[0033] The horizontal adjusting bolt 130 can be adjusted before disassembling and assembling, so that the table top of the workbench 100 is in a horizontal position, the horizontal compression of the piston is ensured, and the installation quality is ensured, since the output shaft of the first driving member 220 is fixedly connected with the sliding block 230, the first driving member 220 can drive the sliding block 230 to slide along the sliding groove block 250, so that the upper sliding rod 242 and the lower sliding rod 243 slide in the sliding block 230, and Figure 2As shown, the slider 230 connected with the first driving member 220 drives the upper slide rod 242 and the lower slide rod 243 to move, wherein the upper slide rod 242 belongs to the left connecting assembly 240, and the lower slide rod 243 belongs to the right connecting assembly 240, and the corresponding connecting assembly 240 drives the slider 230 adjacent to the slider 230 to move, so as to realize the synchronous sliding of all sliders 230. In the assembly process of the piston cylinder, the operator first places the bottom surface of the cylinder body in the placing groove 211, and then performs the positioning and clamping process of the cylinder body. First, the first driving member 220 is started to drive the slider 230 to slide towards the cylinder body. If the cylinder body is not in the positioning position at this time, the pressing block 260 first contacting the side wall of the cylinder body will push the cylinder body to move. When all the sliders 230 simultaneously abut against the outer wall of the cylinder body, the axis of the cylinder body is collinear with the vertical line, and the first driving member 220 continuously applies a pushing force. Therefore, the three pressing blocks 260 jointly provide a clamping force to the cylinder body, so that the cylinder body is clamped at the positioning position, and the positioning and clamping process of the cylinder body is completed. Then, the piston pressing process is performed. The piston to be pressed is placed at the pressing end of the cylinder body, and then the second driving member 320 is started. The second driving member 320 will push the piston to move in the vertical direction, and press the piston into the cylinder body, thereby completing the piston pressing process. After the piston is completely pressed in, the first driving member 220 and the second driving member 320 are reversed, the slider 230 slides away from the cylinder body, and the second driving member 320 moves away from the cylinder body. At this time, the assembled piston cylinder can be taken out. The positioning and clamping device is used in the dismounting tool to position and clamp the cylinder body, so as to ensure that the axis of the cylinder body is collinear with the axis of the second driving member 320, and to ensure that the piston can be pressed into the cylinder body horizontally, thereby avoiding the deviation of the piston during pressing, and improving the quality of the piston cylinder assembly. The guide groove 212 is provided to limit the movement of the connecting block 241 along the guide groove 212, thereby providing more limiting for the sliding of the slider 230, ensuring that all sliders 230 can move synchronously without deviation, improving the positioning accuracy, and ensuring that the piston can be pressed into the cylinder body horizontally, thereby improving the assembly quality. The arc-shaped pressing block 260 has a larger contact area with the outer wall of the cylinder body, so that the clamping effect is better, and the cylinder body is more stable. The pressing block 260 and the slider 230 are threadedly connected, so that the threaded connection is convenient to disassemble and assemble, and the pressing block 260 can be replaced according to the size of the cylinder body, thereby improving the applicability.

[0034] Another arrangement of the slider 230 and the connecting assembly 240 is provided. Different from the above embodiment, two sliding grooves are formed in the connecting assembly 240, and a sliding bar is fixed to each side of each slider 230. Each sliding bar is in sliding connection with a sliding groove. The arrangement can also realize the synchronous sliding of all sliders.

[0035] In addition, the shape of the guide bottom plate 210, the number of sliders 230, sliding groove blocks 250 and connecting assemblies 240 can also be changed according to actual needs.

[0036] Embodiment two

[0037] The second embodiment of the piston cylinder repair tool is shown in Figure 2 and Figure 3 The separating sleeve 400 is placed in the placing groove 211, and the separating sleeve 400 is used to support the bottom of the cylinder body. The inner diameter of the separating sleeve 400 is greater than the outer diameter of the piston. The side wall of the separating sleeve 400 is provided with an observation groove 410, which is connected to the inner cavity of the separating sleeve 400.

[0038] The working principle of the embodiment is as follows:

[0039] When the tool is used for the separation process of the piston, the separating sleeve 400 is placed in the placing groove 211, and the piston cylinder is placed on the top of the separating sleeve 400. The piston cylinder is elevated, and the top of the separating sleeve 400 abuts against the bottom of the cylinder body. After the positioning and clamping process, the piston separation process is performed. The second driving member 320 is started, which pushes the piston to move in the cylinder body. Since the inner diameter of the separating sleeve 400 is greater than the diameter of the piston, the piston can be pushed to fall into the separating sleeve 400. At this time, whether the piston is successfully separated can be observed through the observation groove 410. Without taking out the cylinder body for viewing, the convenience is better. The disassembly and assembly of the piston cylinder share a set of tools, and the tools do not need to be frequently replaced, which is more convenient.

[0040] Embodiment three

[0041] The third embodiment of the piston cylinder repair tool is similar to the first embodiment and the second embodiment. The difference is that, as shown in Figure 1 and Figure 5 The pneumatic control assembly 500 is further included. The pneumatic control assembly 500 includes a pressure regulating assembly 510, a first reversing valve 520 mounted on the workbench 100, and a second reversing valve 530 mounted on the workbench 100. In this embodiment, the first driving member 220 and the second driving member 320 are both air cylinders. The pressure regulating assembly 510 is a pneumatic three-way component. The first reversing valve 520 and the second reversing valve 530 are both three-position five-way middle-seal control valves. The pressure regulating assembly 510 is connected to an air source. The first reversing valve 520 is connected to the pressure regulating assembly 510 through an air pipe. The second reversing valve 530 is connected to the pressure regulating assembly 510 through an air pipe. Two output ends of the first reversing valve 520 are respectively connected to two ends of the cylinder body of the first driving member 220 through air pipes. Two output ends of the second reversing valve 530 are respectively connected to two ends of the cylinder body of the second driving member 320 through air pipes. The pneumatic control assembly 500 further includes a first speed regulating valve 540 arranged at the input end of the first driving member 220 and a second speed regulating valve 550 arranged at the input end of the second driving member 320.

[0042] The working principle of the embodiment is as follows:

[0043] The pressure regulating assembly 510 can control the gas pressure within a certain range, realize the stability of the pressure, make the piston press in more stably, and have better installation effect, the first reversing valve 520 and the second reversing valve 530 can change the direction of the gas pressure, thereby changing the driving direction of the first driving member 220 or the second driving member 320, and the first speed regulating valve 540 controls the speed of the piston press in or separation by controlling the flow, avoids the unstable caused by the too fast speed of the piston, and reduces the installation quality.

[0044] In addition, the first driving member 220 and the second driving member 320 can also be hydraulic cylinders and the like.

[0045] In the specific contents of the above specific embodiments, each technical feature can be combined arbitrarily without contradiction, and in order to make the description simple, all possible combinations of the above technical features are not described, however, as long as the combination of the technical features does not exist contradiction, it should be considered as the range disclosed in the specification.

[0046] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not the limitation of the embodiments of the utility model. For ordinary skilled in the art, on the basis of the above description, other different forms of changes or changes can be made. Here, it is not necessary and impossible to exhaust all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A piston cylinder repair tool, characterized in that, The device comprises a workbench (100), a clamping positioning device (200) and a piston pushing device (300), the clamping positioning device (200) comprises a sliding block (230), a connecting assembly (240), a guide bottom plate (210) installed on the workbench (100), a first driving element (220) installed on the workbench (100) and a sliding groove block (250) installed on the top of the guide bottom plate (210), the top of the guide bottom plate (210) is provided with a placing groove (211) for placing a piston cylinder, the sliding groove block (250) is at least three and is uniformly distributed along the circumference of any vertical line perpendicular to the workbench top, each sliding block (230) is in sliding connection with a sliding groove block (250) and the sliding direction is perpendicular to the vertical line, the connecting assembly (240) is provided with a plurality of connecting assemblies (240) and is located between two adjacent sliding blocks (230), each connecting assembly (240) is in sliding connection with two adjacent sliding blocks (230) at the same time, the first driving element (220) is a linear driving element, the output end of the first driving element (220) is fixedly connected with the sliding block (230) or the connecting assembly (240), the piston pushing device (300) comprises a fixed support (310) installed on the workbench (100) and a second driving element (320) installed on the fixed support (310), the second driving element (320) is a linear driving element, the driving direction of the second driving element (320) is along the direction of the vertical line, and the second driving element (320) is used for pushing the piston of the piston cylinder to move in the vertical direction.

2. A piston cylinder service tool according to claim 1, characterized in that The connecting assembly (240) comprises a connecting block (241), an upper sliding rod (242) fixedly connected with the connecting block (241) and a lower sliding rod (243) fixedly connected with the connecting block (241), and the upper sliding rod (242) and the lower sliding rod (243) are in sliding connection with two sliding blocks (230) respectively.

3. A piston cylinder service tool according to claim 2, characterized in that The top of the guide bottom plate (210) is also provided with guide grooves (212) equal in number to the connecting blocks (241), the connecting blocks (241) are in sliding connection with the guide grooves (212) and the sliding direction is perpendicular to the vertical line.

4. A piston cylinder service tool according to claim 1, characterized in that The output end of the first driving element (220) is fixedly connected with one sliding block (230) and the driving direction is the same as the sliding direction of the sliding block (230).

5. A piston cylinder service tool according to claim 1, characterized in that The sliding block (230) is fixedly provided with a pressing block (260) on the side close to the vertical line, the pressing block (260) is in threaded connection with the sliding block (230), and the side close to the vertical line of the pressing block (260) is in arc shape.

6. A piston cylinder service tool according to claim 1, characterized in that The device further comprises a separation sleeve (400), the separation sleeve (400) can be placed in the placing groove (211), the separation sleeve (400) is used for supporting the bottom of the cylinder body, and the inner diameter of the separation sleeve (400) is greater than the outer diameter of the piston.

7. A piston cylinder service tool according to claim 6, characterized in that An observation groove (410) is formed in the side wall of the separation sleeve (400), and the observation groove (410) is communicated to the inner cavity of the separation sleeve (400).

8. A repair kit for a piston cylinder according to any one of claims 1-7, characterized in that The pneumatic control assembly (500) comprises a pressure regulating assembly (510), a first reversing valve (520) mounted on the workbench (100), and a second reversing valve (530) mounted on the workbench (100), the first driving member (220) and the second driving member (320) are both air cylinders, the pressure regulating assembly (510) is connected with an air source, the first reversing valve (520) is connected with the pressure regulating assembly (510) through an air pipe, the second reversing valve (530) is connected with the pressure regulating assembly (510) through an air pipe, two output ends of the first reversing valve (520) are respectively connected with two ends of a cylinder body of the first driving member (220) through air pipes, and two output ends of the second reversing valve (530) are respectively connected with two ends of a cylinder body of the second driving member (320) through air pipes.

9. A piston cylinder service tool according to claim 8, characterized in that The pneumatic control assembly (500) further comprises a first speed regulating valve (540) arranged at an input end of the first driving member (220) and a second speed regulating valve (550) arranged at an input end of the second driving member (320).

10. A repair kit for a piston cylinder according to any one of claims 1-7, characterized in that A horizontal adjusting bolt (130) is arranged at the bottom of the workbench (100) and is threadedly connected with the workbench (100).

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