Novel semi-automatic gasoline engine piston bushing ring assembling mechanism and using method

Abstract

The invention relates to the technical field of bushing ring assembling, in particular to a novel semi-automatic gasoline engine piston bushing ring assembling mechanism and a using method.The novel semi-automatic gasoline engine piston bushing ring assembling mechanism comprises a rack, a bushing ring opening mechanism is installed on the rack, a jacking assembling mechanism is installed under the bushing ring opening mechanism, and a bushing ring pushing mechanism is installed on the portion, on one side of the bushing ring opening mechanism, of the rack; the bushing ring pushing mechanism comprises a bushing ring tool and a pushing plate capable of pushing the bushing ring to the position under the bushing ring opening mechanism; the bushing ring opening mechanism comprises a supporting plate, and a multi-finger opening mechanism capable of opening the bushing ring and a pressing plate which is driven by a driving mechanism to press the bushing ring downwards and enable the bushing ring to be separated from an inner opening claw of the multi-finger opening mechanism are installed on the bottom face of the supporting plate. The jacking assembling mechanism comprises an assembling supporting plate, a through opening is formed in the center of the assembling supporting plate, a positioning boss is arranged, and a longitudinal air cylinder with an upward piston rod and connected with the positioning boss is installed on the bottom face of the assembling supporting plate. The failure rate caused by bushing ring extrusion is reduced, the assembling rejection rate is reduced through the lap joint preventing mechanism, and the assembling quality and the production efficiency are improved.

Description

Technical Field

[0001] The invention relates to the technical field of liner ring assembly, and in particular to a novel semi-automatic gasoline engine piston liner ring assembly mechanism and a use method. Background Art

[0002] The semi-automatic bushing assembly mechanism currently in use adopts the following method: Figure 1 In the structure shown, the liner ring push plate pushes the liner ring from the liner ring material position, passes through the internal guide groove to the liner ring expansion position, and expands the liner ring through a four-finger structure. The piston skirt is manually held, and the piston head is pressed downward into the tooling. After the PLC receives the signal, the four-finger expansion structure is released, and the liner ring pops into the piston oil ring groove.

[0003] The prior art liner ring push-out structure is a two-body structure, which is divided into a push plate and a guide groove. Due to the thickness limitation of the liner ring, the push plate is only 1.5mm thick and has poor rigidity. When pushing the liner ring out from the material level, it is very easy for it to get stuck between the two liner rings and be unable to move, and the material cannot be pushed smoothly, which not only increases the troubleshooting time in production, but also causes material waste and increases production costs. At the same time, the existing four-finger expansion mechanism has a relatively complex structure, so there is a risk of increased failure rate. In addition, the four-finger expansion mechanism causes the liner ring to be subjected to force at four points, which is relatively unbalanced for the ring-mounted structure, and is easy to affect the shape of the liner ring, thereby affecting the assembly quality. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a novel semi-automatic gasoline engine piston liner ring assembly mechanism and a method of use, which solves the technical problem of high failure rate in the piston liner ring assembly process and further achieves the cheapness and precision of the semi-automatic assembly of the piston liner ring.

[0005] The present invention is achieved through the following technical solutions: A novel semi-automatic gasoline engine piston liner ring assembly mechanism is provided, comprising a frame, a liner ring spreading mechanism is installed on the frame, a jacking assembly mechanism is installed directly below the liner ring spreading mechanism, and a liner ring pushing mechanism is installed on one side of the liner ring spreading mechanism of the frame. The liner ring pushing mechanism includes a liner ring fixture installed vertically on the frame and used to stack the liner rings up and down. A push plate connected to the horizontal cylinder I and capable of pushing the liner ring into the liner ring opening mechanism is slidably arranged at the bottom of the liner ring fixture. An arc-shaped open groove matching the size of the liner ring and having the same thickness is provided on one end of the push plate on the surface facing the liner ring fixture. The liner ring opening mechanism includes a support plate, the four corners of the bottom surface of the support plate are respectively installed on the frame through support rods, the bottom surface of the support plate is installed with a multi-finger opening mechanism that can open the liner ring, the surface of the support plate is installed with a rotating cylinder for driving the multi-finger opening mechanism to move, and the bottom surface of the support plate is also installed with a pressing plate driven by the driving mechanism to press down the liner ring and separate it from the inner supporting claws of the multi-finger opening mechanism; The lifting assembly mechanism includes an assembly pallet installed on the frame for transverse sliding. The assembly pallet has a through hole opened in the center opposite to the multi-finger spreading mechanism, and a positioning boss is arranged in the through hole, which can penetrate the assembly pallet and is used to position the installation piston. A longitudinal cylinder is installed on the bottom surface of the assembly pallet, and the piston rod of the longitudinal cylinder is upward and connected to the positioning boss.

[0006] Furthermore, it also includes a controller which is electrically connected to the liner ring expansion mechanism, the jacking assembly mechanism and the liner ring pushing mechanism and is used for coordinated control.

[0007] By setting up a controller, the liner ring expansion mechanism, the jacking assembly mechanism and the liner ring pushing mechanism can be coordinated and controlled by the controller to realize the semi-automatic assembly of the liner ring.

[0008] Furthermore, the assembly tray is provided with sliders on both sides of the sliding direction, and the frame is provided with sliding grooves cooperating with the sliders on both sides of the assembly tray. A spring pin is installed on one of the sliders opposite to the sliding groove, and a pin hole I and a pin hole II that can cooperate with the spring pin are formed in the sliding groove, and a travel switch I and a travel switch II are correspondingly arranged in the pin holes, and both travel switches are electrically connected to the controller.

[0009] Slide blocks and slide grooves are set on both sides of the assembly pallet to slide together. Positioning is achieved through the spring pins on the sliders and the pin holes on the slide grooves. The travel switches in the pin holes can be used to determine the position of the assembly pallet and send signals to the controller to control the assembly process of the liner ring.

[0010] Furthermore, an anti-overlap mechanism electrically connected to the controller is installed on the side of the support plate away from the liner ring pushing mechanism, and the anti-overlap mechanism includes a mounting seat, on which a transverse cylinder II is installed, and a movable plate is connected to the piston rod of the transverse cylinder II through a guide block, and a tip that can be extended into the ring groove of the piston part is formed at one end of the movable plate facing the push plate.

[0011] The anti-overlap mechanism drives the movable plate to move through the piston rod of the transverse cylinder II, and uses the tip of the movable plate to extend into the ring groove of the piston part, which can effectively prevent the problem of overlapping of the two ends of the notch during the assembly of the liner ring sleeve and improve the qualified rate of assembly.

[0012] Furthermore, the bottom surface of the assembly tray is connected to a fixed plate parallel to it through a support rod, and at least two guide rods are vertically connected between the fixed plate and the assembly tray in the circumferential direction of the opening. The vertical cylinder is installed on the bottom plate of the fixed plate, and the piston rod of the vertical cylinder passes through the fixed plate, and a positioning block is connected above the fixed plate, which is penetrated by the guide rod and slidably set on the guide rod.

[0013] A fixing plate is arranged on the bottom surface of the assembly tray, a guide rod is arranged between the fixing plate and the assembly tray, a positioning block on the vertical cylinder piston rod is slid through by the guide rod, and the guide rod can be used to guide and limit the positioning block when the piston rod moves, so as to ensure the stability of the piston rod operation.

[0014] Furthermore, the liner ring tooling includes an upper plate and a lower plate of the same size and both circular, and the upper plate and the lower plate are connected by at least two columns located on the same circular trajectory, and the outer diameter of the circular trajectory formed by each column is smaller than the inner diameter of the piston liner ring.

[0015] The liner ring fixture forms a columnar structure through an upper plate, a lower plate and a column. The diameter of the column formed by the columns on the outer periphery is smaller than the inner diameter of the piston liner ring, which facilitates the insertion of the piston liner ring.

[0016] Furthermore, a guide frustum is provided on the surface of the upper plate, and the lower bottom surface of the guide frustum is the same size as the upper plate.

[0017] A guide truncated cone is arranged on the surface of the upper plate, the lower bottom surface of the guide truncated cone is the same size as the upper plate, and the upper top surface area is smaller than the upper plate area, and the guide truncated cone can be used to facilitate the placement of the liner ring on the liner ring fixture.

[0018] Furthermore, the outer sleeve of the liner ring tooling is provided with a ring-shaped liner ring pressure plate which is slidably connected to the column. The bottom surface of the liner ring pressure plate is vertically connected with pull rods on both sides of the length direction of the horizontal cylinder I. A linear module electrically connected to the controller is also installed on one side of the vertical cylinder on the frame. The moving end of the linear module moves vertically and is connected to the two pull rods.

[0019] The liner ring pressing plate is driven by a linear module. The movable end of the linear module moves a distance equal to the thickness of a liner ring each time. The liner ring can be pressed into the arc-shaped open groove of the push plate by the downward pressure of the liner ring pressing plate to ensure smooth unloading of the liner ring.

[0020] A method for using a novel semi-automatic gasoline engine piston liner ring assembly mechanism comprises the following steps: S1. Insert the liner ring into the liner ring fixture, pull out the assembly pallet to the loading position, and the spring pin on the slider on one side of the assembly pallet enters the pin hole II from the pin hole I to complete the positioning. The travel switch II receives the signal to the controller, and the controller controls the moving end of the linear module to move downward by a liner ring thickness. The pressure plate is pulled downward by the pull rod to press a liner ring into the arc-shaped open groove of the push plate. The horizontal cylinder I pushes the push plate to move and drive the liner ring to enter the right below the multi-finger opening mechanism of the liner ring opening mechanism. The rotary cylinder rotates to drive the six inner support claws to open the liner ring. The horizontal cylinder I drives the push plate back to complete the liner ring loading and opening action; S2. Place the piston on the assembly pallet, use the positioning boss to position the piston, push the assembly pallet directly under the multi-finger opening mechanism, and the spring pin on the slider on one side of the assembly pallet returns from the pin hole II to the pin hole I to complete the positioning. The travel switch I receives a signal to the controller, and the controller controls the longitudinal cylinder to start. The piston rod of the longitudinal cylinder drives the piston to rise to a suitable height using the positioning boss. The movable pressure plate on the bottom of the support plate pushes the liner ring to move downward and the rotating cylinder rotates in the opposite direction, so that the multi-finger opening mechanism is retracted, and the liner ring bounces into the oil ring groove of the piston. The piston rod of the vertical cylinder is retracted in the opposite direction, driving the piston back to the assembly pallet, pulling out the assembly pallet, and taking out the piston, completing an assembly action. S3. Repeat steps S1 and S2 to complete the piston liner ring assembly.

[0021] Furthermore, in step S2, after the piston rises to a suitable height, the piston rod of the transverse cylinder II of the anti-overlap mechanism extends to drive the tip of the movable plate into the piston oil ring groove, and then the multi-finger spreading mechanism is retracted.

[0022] By utilizing the tip of the movable plate to extend into the piston oil ring groove, overlapping of the two ends of the liner ring gap can be prevented during assembly, thereby improving the stability of the assembly.

[0023] Beneficial effects of the present invention: The present invention adopts a linear module to drive the downward pressing stroke of the liner ring pressure plate, and the structure of the integrated push plate driven by the transverse cylinder I can complete the loading of a single liner ring more accurately, reducing the failure rate caused by liner ring extrusion. At the same time, the multi-finger propping mechanism makes the liner ring more evenly stressed and the irregular deformation smaller. The tip of the movable plate of the anti-lapping mechanism extends into the piston oil ring groove, which can effectively reduce the overlap at both ends of the piston notch after assembly, reduce the assembly scrap rate, realize the semi-automatic assembly process of the piston liner ring, reduce labor intensity, make assembly more precise, and improve assembly quality and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0025] Figure 2 It is a front view of the present invention.

[0026] Figure 3 It is a structural schematic diagram of the jacking mechanism assembled in the present invention.

[0027] Figure 4 It is a structural schematic diagram of the multi-finger spreading mechanism in the present invention.

[0028] Figure 5 It is a structural schematic diagram of the anti-overlap mechanism and the liner ring pushing mechanism in the present invention.

[0029] As shown in the figure: 1. Lining ring spreading mechanism, 101. Support plate, 102. Support rod, 103. Multi-finger spreading mechanism, 104. Internal support mechanism, 2. Lifting assembly mechanism, 201. Assembly pallet, 202. Vertical cylinder, 203. Positioning boss, 204. Fixed plate, 205. Support rod, 206. Guide rod, 207. Positioning block, 208. Through port, 209. Spring pin, 3. Lining ring pushing mechanism, 301. Lining ring tooling, 302. Horizontal cylinder I, 303. Push plate, 304. Linear module, 305. Pull rod, 306. Arc opening groove, 307. Upper plate, 308. Lower plate, 309. Column, 310. Guide round table, 311. Lining ring pressure plate, 4. Anti-overlap mechanism, 401. Mounting seat, 402. Horizontal cylinder II, 403. Movable plate, 404. Tip. DETAILED DESCRIPTION

[0030] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0031] Embodiment 1: like Figure 1-Figure 5 As shown, a novel semi-automatic gasoline engine piston liner ring assembly mechanism includes a frame, a liner ring expansion mechanism 1 is installed on the frame and a lifting assembly mechanism 2 is installed directly below the liner ring expansion mechanism 1, and a liner ring pushing mechanism 3 is installed on one side of the liner ring expansion mechanism 1 of the frame.

[0032] The liner ring pushing mechanism 3 includes a liner ring fixture 301 which is vertically installed on the frame and is used to stack the liner rings up and down. A push plate 303 connected to the horizontal cylinder I302 is slidably provided at the bottom of the liner ring fixture 301 and can push the liner ring into the liner ring opening mechanism 1 directly below. One end of the push plate 303 is provided with an arc-shaped open groove 306 on the surface facing the liner ring fixture 301, which is adapted to the size of the liner ring and has the same thickness.

[0033] The liner ring opening mechanism 1 includes a support plate 101, and the four corners of the bottom surface of the support plate 101 are respectively installed on the frame through support rods 102. A multi-finger opening mechanism 103 that can open the liner ring is installed on the bottom surface of the support plate 101. A rotating cylinder 104 for driving the multi-finger opening mechanism 103 is installed on the surface of the support plate 101. The bottom surface of the support plate 101 is also installed with a pressure plate driven by a driving mechanism to press down the liner ring and separate it from the inner support claw of the multi-finger opening mechanism 103. In this embodiment, the multi-finger opening mechanism 103 selects six fingers, so that the liner ring is more evenly stressed and the irregular deformation is smaller. The pressure plate is arranged vertically and can be driven by a cylinder. The liner ring is pushed out from the inner support claw of the multi-finger opening mechanism 103 by pressing down vertically with the pressure plate.

[0034] In the present application, the six-finger spreading mechanism 103 includes a support plate 101; at least six inner supporting mechanisms 104, fixedly mounted at the bottom of the support plate 101, and the inner supporting mechanisms 104 are distributed in a circular array on the support plate 101; a rotating disk, arranged between the support plate 101 and the inner supporting mechanism, and a transmission joint bearing corresponding to the inner supporting mechanism is arranged at the bottom of the rotating disk; a power cylinder, fixedly mounted on the support plate 101, and a power rod of the power cylinder is connected to the rotating disk to drive the rotating disk to rotate clockwise or counterclockwise. The inner supporting mechanism includes a mounting plate fixedly mounted at the bottom of the support plate; a guide rod, fixedly mounted on the mounting plate and facing the center of the circle; an inner supporting slider, sleeved on the guide rod, a groove is provided on the inner supporting slider, and both sides of the groove are opened to accommodate the transmission joint bearing, the transmission joint bearing is matched with the groove with a small gap, and the transmission joint bearing drives the inner supporting slider to move inward or outward in a centripetal linear manner; an inner supporting claw, one end of which is fixedly mounted at the bottom of the inner supporting slider, and the other end of the inner supporting claw is on the inner side of the rotating disk. The structure can adopt the expansion mechanism of the existing structure, as long as it can expand the liner ring, and its specific structure is not limited.

[0035] The lifting assembly mechanism 2 includes an assembly pallet 201 which is laterally slidably installed on the frame. The assembly pallet 201 has a through opening 208 at the center facing the multi-finger spreading mechanism 103, and a positioning boss 203 which can penetrate the assembly pallet 201 and is used to position the mounting piston is arranged in the through opening 208. A longitudinal cylinder 202 is installed on the bottom surface of the assembly pallet 201, and the piston rod of the longitudinal cylinder 202 is upward and connected to the positioning boss 203.

[0036] In order to better coordinate the various mechanisms, the present invention also includes a controller electrically connected to the liner ring expansion mechanism 1, the jacking assembly mechanism 2 and the liner ring pushing mechanism 3 and used for coordinated control, which can generally be achieved by selecting a conventional PLC controller.

[0037] The assembly tray 201 is provided with sliders on both sides of the sliding direction, and the frame is provided with sliding grooves matching with the sliders on both sides of the assembly tray 201. A spring pin 209 is installed on one of the sliders facing the sliding groove. A pin hole I and a pin hole II that can match with the spring pin 209 are formed in the sliding groove, and a travel switch I and a travel switch II are correspondingly arranged in the pin holes, and both travel switches are electrically connected to the controller.

[0038] An anti-overlap mechanism 4 electrically connected to the controller is installed on the side of the support plate 101 away from the liner ring pushing mechanism 3, and the anti-overlap mechanism 4 includes a mounting seat 401, on which a transverse cylinder II402 is installed, and a movable plate 403 is connected to the piston rod of the transverse cylinder II402 through a guide block, and a tip 404 that can extend into the ring groove of the piston part is formed at one end of the movable plate 403 facing the push plate.

[0039] The bottom surface of the assembly tray 201 is connected to a fixed plate 204 parallel to it through a support rod 205, and at least two guide rods 207 are vertically connected between the fixed plate 204 and the assembly tray 201 in the circumferential direction of the opening. The vertical cylinder 202 is installed on the bottom plate of the fixed plate 204, and the piston rod of the vertical cylinder 202 penetrates the fixed plate 204, and a positioning block 207 is penetrated by the guide rod 206 and slidably set on the guide rod 206 and is connected above the fixed plate 204.

[0040] The liner ring fixture 301 includes an upper plate 307 and a lower plate 308 of the same size and both in a circular shape. The upper plate 307 and the lower plate 308 are connected by at least two columns 309 located on the same circular track. The outer diameter of the circular track formed by each column 309 is smaller than the inner diameter of the piston liner ring. A guide truncated platform 310 is also provided on the surface of the upper plate 307. The lower bottom surface of the guide truncated platform 310 is the same size as the upper plate 307.

[0041] The outer sleeve of the liner ring tooling 301 is provided with a ring-shaped liner ring pressure plate 311 which is slidably connected to the column 309. The bottom surface of the liner ring pressure plate 311 is vertically connected to the pull rods 305 on both sides of the length direction of the horizontal cylinder I302. A linear module 304 electrically connected to the controller is also installed on one side of the vertical cylinder 202 on the frame. The moving end of the linear module 304 moves vertically and is connected to the two pull rods 305.

[0042] This application has been successfully verified in Binzhou Bohai Piston Co., Ltd., reducing the failure rate of liner ring assembly and improving assembly quality.

[0043] The schematic diagram of the present application only shows some key structures of the entire device. The specific device dimensions and tooling parts dimensions can be adjusted and modified on the basis of the core structure of the present application according to the different specifications of the liner rings, but without departing from the basic principles of the present device.

[0044] Embodiment 2: A method for using a novel semi-automatic gasoline engine piston liner ring assembly mechanism comprises the following steps: S1. Insert the liner ring into the liner ring fixture 301, pull out the assembly tray 201 to the loading position, and the spring pin 209 on the slider on one side of the assembly tray 201 enters the pin hole II from the pin hole I to complete the positioning. The travel switch II receives the signal to the controller, and the controller controls the moving end of the linear module 304 to move downward by a liner ring thickness, and pulls the liner ring pressing plate 311 downward through the pull rod 305 to press a liner ring into the arc-shaped open groove 306 of the push plate 303. The horizontal cylinder I302 pushes the push plate 303 to move and drive the liner ring to enter directly below the multi-finger opening mechanism 103 of the liner ring opening mechanism 1. The rotary cylinder 104 rotates to drive the six inner support claws to open the liner ring, and the horizontal cylinder I302 drives the push plate 303 to retreat, completing the liner ring loading and opening action; S2, place the piston on the assembly pallet 201, use the positioning boss 203 to position the piston, push the assembly pallet 201 directly under the multi-finger opening mechanism 103, and the spring pin 209 on the slider on one side of the assembly pallet 201 returns from the pin hole II to the pin hole I to complete the positioning, the travel switch I receives the signal to the controller, the controller controls the longitudinal cylinder 202 to start, the piston rod of the longitudinal 202 uses the positioning boss 203 to drive the piston to rise to a suitable height, the piston rod of the transverse cylinder II402 of the anti-lap mechanism 4 extends to drive the tip 404 of the movable plate 403 to extend into the piston oil ring groove, the movable pressure plate on the bottom of the support plate 101 pushes the liner ring to move downward and the rotating cylinder 104 rotates in the opposite direction, so that the multi-finger opening mechanism 103 is retracted, the liner ring bounces into the oil ring groove of the piston, the piston rod of the vertical cylinder 202 is retracted in the opposite direction, driving the piston back to the assembly pallet 201, pulling out the assembly pallet 201, taking out the piston, and completing an assembly action; S3. Repeat steps S1 and S2 to complete the piston liner ring assembly.

[0045] Of course, the above description is not limited to the above examples. Technical features not described in the present invention can be achieved by or by using existing technologies, which will not be described here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention, and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A novel semi-automatic gasoline engine piston liner assembly mechanism, comprising a frame, characterized in that: A liner ring expansion mechanism is installed on the frame, and a jacking assembly mechanism is installed directly below the liner ring expansion mechanism. A liner ring pushing mechanism is installed on one side of the liner ring expansion mechanism. The liner ring pushing mechanism includes a liner ring fixture installed vertically on the frame and used to stack the liner rings up and down. A push plate connected to the horizontal cylinder I and capable of pushing the liner ring into the liner ring opening mechanism is slidably arranged at the bottom of the liner ring fixture. An arc-shaped open groove matching the size of the liner ring and having the same thickness is provided on one end of the push plate on the surface facing the liner ring fixture. The liner ring opening mechanism includes a support plate, the four corners of the bottom surface of the support plate are respectively installed on the frame through support rods, the bottom surface of the support plate is installed with a multi-finger opening mechanism that can open the liner ring, the surface of the support plate is installed with a rotating cylinder for driving the multi-finger opening mechanism to move, and the bottom surface of the support plate is also installed with a pressing plate driven by the driving mechanism to press down the liner ring and separate it from the inner supporting claws of the multi-finger opening mechanism; The lifting assembly mechanism includes an assembly pallet installed on the frame for transverse sliding. The assembly pallet has a through hole opened in the center opposite to the multi-finger spreading mechanism, and a positioning boss is arranged in the through hole, which can penetrate the assembly pallet and is used to position the installation piston. A longitudinal cylinder is installed on the bottom surface of the assembly pallet, and the piston rod of the longitudinal cylinder is upward and connected to the positioning boss.

2. The novel semi-automatic gasoline engine piston liner ring assembly mechanism according to claim 1 is characterized in that: It also includes a controller which is electrically connected to the liner ring expansion mechanism, the jacking assembly mechanism and the liner ring pushing mechanism and is used for coordinated control.

3. The novel semi-automatic gasoline engine piston liner ring assembly mechanism according to claim 2 is characterized in that: The assembly tray is provided with sliders on both sides of the sliding direction, and the frame is provided with sliding grooves matching with the sliders on both sides of the assembly tray. A spring pin is installed on one of the sliders facing the sliding groove, and a pin hole I and a pin hole II that can match with the spring pin are formed in the sliding groove, and a travel switch I and a travel switch II are correspondingly arranged in the pin holes, and both travel switches are electrically connected to the controller.

4. The novel semi-automatic gasoline engine piston liner ring assembly mechanism according to claim 2 is characterized in that: An anti-overlap mechanism electrically connected to the controller is installed on the side of the support plate away from the liner ring pushing mechanism. The anti-overlap mechanism includes a mounting seat, on which a transverse cylinder II is installed. A movable plate is connected to the piston rod of the transverse cylinder II through a guide block, and a tip that can extend into the ring groove of the piston is formed at one end of the movable plate facing the push plate.

5. The novel semi-automatic gasoline engine piston liner ring assembly mechanism according to claim 1 is characterized in that: The bottom surface of the assembly tray is connected to a fixed plate parallel to it through a support rod, and at least two guide rods are vertically connected between the fixed plate and the assembly tray in the circumferential direction of the opening. The vertical cylinder is installed on the bottom plate of the fixed plate, and the piston rod of the vertical cylinder passes through the fixed plate, and a positioning block is connected above the fixed plate and is penetrated by the guide rod and slidably set on the guide rod.

6. The novel semi-automatic gasoline engine piston liner ring assembly mechanism according to claim 2 is characterized in that: The liner ring fixture includes an upper plate and a lower plate of the same size and both circular. The upper plate and the lower plate are connected by at least two columns located on the same circular trajectory. The outer diameter of the circular trajectory formed by each column is smaller than the inner diameter of the piston liner ring.

7. The novel semi-automatic gasoline engine piston liner ring assembly mechanism according to claim 6 is characterized in that: A guide truncated cone is also provided on the surface of the upper plate, and the lower bottom surface of the guide truncated cone is the same size as that of the upper plate.

8. The novel semi-automatic gasoline engine piston liner ring assembly mechanism according to claim 6 is characterized in that: The outer sleeve of the liner ring tooling is provided with a ring-shaped liner ring pressure plate which is slidably connected to the column. The bottom surface of the liner ring pressure plate is vertically connected with pull rods on both sides of the length direction of the horizontal cylinder I. A linear module electrically connected to the controller is also installed on one side of the vertical cylinder on the frame. The moving end of the linear module moves vertically and is connected to the two pull rods.

9. A method for using the novel semi-automatic gasoline engine piston liner ring assembly mechanism according to claim 8, characterized in that: The following steps are involved: S1. Insert the liner ring into the liner ring fixture, pull out the assembly pallet to the loading position, and the spring pin on the slider on one side of the assembly pallet enters the pin hole II from the pin hole I to complete the positioning. The travel switch II receives the signal to the controller, and the controller controls the moving end of the linear module to move downward by a liner ring thickness. The pressure plate is pulled downward by the pull rod to press a liner ring into the arc-shaped open groove of the push plate. The horizontal cylinder I pushes the push plate to move and drive the liner ring to enter the right below the multi-finger opening mechanism of the liner ring opening mechanism. The rotary cylinder rotates to drive the six inner support claws to open the liner ring. The horizontal cylinder I drives the push plate back to complete the liner ring loading and opening action; S2. Place the piston on the assembly pallet, use the positioning boss to position the piston, push the assembly pallet directly under the multi-finger opening mechanism, and the spring pin on the slider on one side of the assembly pallet returns from the pin hole II to the pin hole I to complete the positioning. The travel switch I receives a signal to the controller, and the controller controls the longitudinal cylinder to start. The piston rod of the longitudinal cylinder drives the piston to rise to a suitable height using the positioning boss. The movable pressure plate on the bottom of the support plate pushes the liner ring to move downward and the rotating cylinder rotates in the opposite direction, so that the multi-finger opening mechanism is retracted, and the liner ring bounces into the oil ring groove of the piston. The piston rod of the vertical cylinder is retracted in the opposite direction, driving the piston back to the assembly pallet, pulling out the assembly pallet, and taking out the piston, completing an assembly action. S3. Repeat steps S1 and S2 to complete the piston liner ring assembly.

10. The method for using the novel semi-automatic gasoline engine piston liner ring assembly mechanism according to claim 9 is characterized in that: In step S2, after the piston rises to a suitable height, the piston rod of the transverse cylinder II of the anti-overlap mechanism extends to drive the tip of the movable plate into the piston oil ring groove, and then the multi-finger spreading mechanism is retracted.

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