Engine cylinder block production line

Abstract

The invention discloses an engine cylinder block production line, and relates to the field of engine manufacturing. An engine cylinder block production line comprises a base and further comprises fixing plates symmetrically connected to the two ends of the base in a sliding mode. The clamping air bag is arranged on the fixing plate; the clamping air bag expands to clamp the cylinder body, can adapt to cylinder bodies in different shapes, and is stable and free of damage; an electric telescopic rod drives a grinding and polishing block to reciprocate up and down in a piston cavity to increase grinding comprehensiveness, gear transmission ensures that a rotating shaft rotates stably and controllably to achieve uniform and high-quality grinding, and a spring can respond to shape changes of the inner wall of the piston cavity in time to ensure that the grinding and polishing block always makes close contact so as to improve quality. And meanwhile, redundant air of the clamping air bag enters the sleeve through the channel and then is sprayed out of the air nozzle to blow away chippings, the grinding precision is prevented from being affected, high pressure in the sleeve can prevent the grinding and polishing block from being separated from the inner wall due to insufficient centrifugal force, continuous and effective grinding is guaranteed, and the working efficiency and grinding quality are overall improved.

Description

Technical Field

[0001] The invention belongs to the technical field of engine manufacturing, and in particular relates to an engine cylinder production line. Background Art

[0002] The engine cylinder block is the core component of the engine. The smoothness of the inner wall of its piston cavity directly affects the engine's operating efficiency, service life and stability. Therefore, in the production process of the engine cylinder block, accurate and efficient grinding and polishing of the inner wall of the piston cavity is a crucial step. Through grinding, burrs, scratches and other defects on the inner wall of the piston cavity can be removed, the friction resistance during piston movement can be reduced, and energy loss can be reduced. At the same time, problems such as local wear or poor sealing caused by uneven inner wall can be avoided, ensuring good engine performance.

[0003] Currently, the equipment used for grinding and polishing the inner wall of the piston cavity of the engine cylinder block mostly uses rigid clamps for clamping and fixing. This makes it difficult to adapt to cylinder blocks of different shapes and easily causes damage to the cylinder block surface. In terms of comprehensiveness and efficiency of grinding, the grinding mechanism of existing equipment can often only move in a single direction, making it difficult to cover the entire area of ​​the inner wall of the piston cavity. This results in incomplete grinding and requires multiple adjustments to complete the grinding work, seriously affecting work efficiency. In terms of grinding accuracy and stability, the transmission mechanism of some equipment is not stable enough, and the speed fluctuation is prone to occur, resulting in uneven grinding. At the same time, the grinding parts have a poor fit with the inner wall of the piston cavity and cannot respond to the shape changes of the inner wall in time. Especially when encountering bulges or depressions on the inner wall, it is easy to cause insufficient grinding or excessive grinding. In view of this, the present invention is specially proposed. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an engine cylinder production line that can overcome the above problems or at least partially solve the above problems.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: An engine cylinder production line includes a base, and further includes: a fixed plate symmetrically slidably connected to both ends of the base; a clamping airbag, arranged on the fixed plate, wherein when the clamping airbag is expanded, it can fit tightly with the surface of the cylinder; a connecting seat, which is lifted and connected to the base; a rotating shaft, which is rotatably connected to the connecting seat; a sleeve, which is symmetrically fixedly connected to the rotating shaft, wherein a piston disk is slidably connected in the sleeve, a connecting rod is fixedly connected to the piston disk, and the end of the connecting rod away from the piston disk is detachably connected to a grinding and polishing block; an elastic reset member, which is provided It is placed in the sleeve and is used to assist the piston disc in resetting; a hollow rod is fixedly connected to the connecting rod, wherein the hollow rod is fixedly connected to a plurality of air nozzles, an air delivery cavity is provided on the rotating shaft, and an air inlet hole is provided on the rotating shaft which is respectively connected to the air delivery cavity and the sleeve, and the sleeve is connected to the hollow rod through a second pressure relief pipe; a first pressure relief pipe is connected to the clamping airbag, and the end of the first pressure relief pipe away from the clamping airbag is connected to the air delivery cavity through a rotary joint, and the rotary joint is provided on the rotating shaft, and pressure relief valves are provided on both the first pressure relief pipe and the second pressure relief pipe.

[0006] In order to drive the fixed plate to move, preferably, a cylinder is fixedly mounted on the base, and the fixed plate is fixedly connected to the telescopic end of the cylinder.

[0007] In order to transport gas into the clamping airbag, expand the clamping airbag, and fit tightly against the outer wall of the cylinder, preferably, a booster pump is fixedly installed on the base, and the output end of the booster pump is connected to the clamping airbag through an air pipe. An exhaust pipe 1 is fixedly connected to the clamping airbag, and a valve switch is provided on the exhaust pipe 1.

[0008] In order to drive the rotating shaft to rotate, preferably, a motor is fixedly mounted on the connecting seat, and gears are fixedly mounted on the output end of the motor and the rotating shaft, and the two gears are meshed and connected.

[0009] In order to control the lifting and lowering of the connecting seat, further, a sliding seat is slidably connected to the base, an electric telescopic rod is fixedly connected to the sliding seat, and the connecting seat is fixedly connected to the telescopic end of the electric telescopic rod.

[0010] In order to drive the sliding seat to drive the connecting seat to move as a whole, further, a screw rod is rotatably connected to the side wall of the base, a guide rod is fixedly connected to the side wall of the base, the sliding seat is slidably connected to the guide rod, and is threadedly connected to the screw rod, and a driving handle is fixedly connected to one end of the screw rod.

[0011] In order to facilitate the discharge of the pressurized gas in the sleeve, preferably, the sleeve is fixedly connected to an exhaust pipe 2, and the exhaust pipe 2 is provided with a solenoid valve.

[0012] In order to assist the piston disc in resetting, the elastic resetting member further includes a spring, which is arranged in the sleeve. One end of the spring is fixedly connected to the piston disc, and the other end is fixedly connected to the inner wall of the sleeve.

[0013] In order to facilitate the disassembly and assembly of the grinding and polishing block, preferably, a fixing box is fixedly connected to the end of the connecting rod away from the piston disk, one end of the grinding and polishing block is inserted into the fixing box, and a locking bolt is threadedly connected to the fixing box and abuts against the side wall of the grinding and polishing block.

[0014] In order to collect the debris generated during the grinding process, preferably, a groove is provided on the base, and a collection frame is inserted into the groove.

[0015] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: The present invention uses a clamping airbag to expand and clamp the cylinder body, which can adapt to cylinder bodies of different shapes, firmly clamps and avoids damaging the cylinder body; The electric telescopic rod drives the grinding and polishing block to move up and down in the piston cavity, which increases the comprehensiveness of the grinding and improves work efficiency; The gear transmission has high efficiency and accurate transmission ratio, ensuring the smooth rotation of the shaft and the controllable speed, making the grinding speed of the polishing block stable and improving the grinding uniformity and quality; The spring has a simple structure, low cost, and good reset effect. It can respond to the shape changes of the inner wall of the piston cavity in a timely manner, so that the grinding and polishing block is always in close contact with the inner wall, ensuring more uniform grinding and improving grinding quality. The excess gas in the clamping airbag enters the sleeve through a series of channels and is then ejected through the air nozzle to blow away the debris, avoiding affecting the grinding accuracy, realizing rational use of gas, and saving energy. At the same time, the high pressure is maintained in the sleeve to prevent the grinding and polishing block from being unable to make close contact with the inner wall due to insufficient centrifugal force, thereby ensuring the continuity and effectiveness of grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the present invention Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention Figure 2 ; Figure 3 This is a schematic diagram of the structure of the present invention Figure 3 ; Figure 4 It is a cross-sectional view of the base, fixing plate, clamping airbag, rotating shaft and sleeve of the present invention; Figure 5 This is a schematic structural diagram of the fixing plate and the clamping airbag of the present invention; Figure 6 It is a partial structural schematic diagram of the present invention; Figure 7 It is a structural diagram of the sleeve, fixing box and grinding and polishing block of the present invention; Figure 8 This invention Figure 6 Enlarged view of part A.

[0017] In the figure: 1. Base; 101. Collection frame; 102. Fixing plate; 103. Cylinder; 2. Clamping airbag; 201. Booster pump; 202. Air pipe; 203. Exhaust pipe 1; 3. Connecting seat; 301. Rotating shaft; 302. Motor; 303. Gear; 304. Electric telescopic rod; 305. Sliding seat; 4. Sleeve; 401. Piston disc; 402. Connecting rod; 403. Fixing box; 404. Grinding and polishing block; 405. Locking bolt; 406. Spring; 5. Pressure relief pipe 1; 501. Air chamber; 502. Air inlet; 503. Pressure relief pipe 2; 504. Hollow rod; 505. Air nozzle; 506. Exhaust pipe 2; 6. Screw; 601. Guide rod; 602. Driving handle. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0019] Example 1: Reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8An engine cylinder production line includes a base 1, and further includes: a fixed plate 102 symmetrically slidably connected to both ends of the base 1; a clamping airbag 2, which is arranged on the fixed plate 102, wherein when the clamping airbag 2 is expanded, it can closely fit the surface of the cylinder; a connecting seat 3, which is connected to the base 1 in a lifting manner; a rotating shaft 301, which is rotatably connected to the connecting seat 3; a sleeve 4, which is symmetrically fixedly connected to the rotating shaft 301, wherein a piston disk 401 is slidably connected in the sleeve 4, a connecting rod 402 is fixedly connected to the piston disk 401, and a grinding and polishing block 404 is detachably connected to the end of the connecting rod 402 away from the piston disk 401; an elastic reset member is arranged on the sleeve 4 4, and is used to assist the piston disc 401 in resetting; the hollow rod 504 is fixedly connected to the connecting rod 402, wherein the hollow rod 504 is fixedly connected to a plurality of air nozzles 505, an air delivery cavity 501 is opened on the rotating shaft 301, and an air inlet 502 is opened on the rotating shaft 301, which is respectively connected to the air delivery cavity 501 and the sleeve 4, and the sleeve 4 is connected to the hollow rod 504 through the pressure relief pipe 2 503; the pressure relief pipe 1 5 is connected to the clamping airbag 2, and the end of the pressure relief pipe 1 5 away from the clamping airbag 2 is connected to the air delivery cavity 501 through a rotary joint, and the rotary joint is provided on the rotating shaft 301, and the pressure relief pipe 1 5 and the pressure relief pipe 2 503 are both provided with pressure relief valves.

[0020] A cylinder 103 is fixedly mounted on the base 1 , and the fixing plate 102 is fixedly connected to the telescopic end of the cylinder 103 .

[0021] A booster pump 201 is fixedly installed on the base 1, and the output end of the booster pump 201 is connected to the clamping airbag 2 through an air pipe 202. An exhaust pipe 203 is fixedly connected to the clamping airbag 2, and a valve switch is set on the exhaust pipe 203.

[0022] A motor 302 is fixedly mounted on the connecting base 3 , and a gear 303 is fixedly mounted on the output end of the motor 302 and the rotating shaft 301 , and the two gears 303 are meshed and connected.

[0023] The base 1 is slidably connected to a sliding seat 305 , the sliding seat 305 is fixedly connected to an electric telescopic rod 304 , and the connecting seat 3 is fixedly connected to the telescopic end of the electric telescopic rod 304 .

[0024] The sleeve 4 is fixedly connected to an exhaust pipe 2 506 , and an electromagnetic valve is provided on the exhaust pipe 2 506 .

[0025] The elastic return member includes a spring 406 , which is disposed in the sleeve 4 . One end of the spring 406 is fixedly connected to the piston disc 401 , and the other end is fixedly connected to the inner wall of the sleeve 4 .

[0026] During operation, the engine cylinder is placed on the base 1 and the cylinder 103 is started. The telescopic end of the cylinder 103 is extended and retracted to drive the fixed plate 102 to slide on the base 1. With the precise control of the cylinder 103, the distance between the fixed plates 102 can be quickly and accurately adjusted, so that the clamping airbag 2 can be close to and accurately aligned with the cylinder. Then the booster pump 201 is turned on. The booster pump 201 inflates the clamping airbag 2 through the air pipe 202 to expand the clamping airbag 2. The inflated clamping airbag 2 fits tightly with the surface of the cylinder to fix the cylinder. This process uses the clamping airbag 2 to expand the clamping cylinder, which can adapt to cylinders of different shapes, making the clamping more stable and avoiding damage to the cylinder. At the same time, the clamping force can be adjusted by controlling the inflation amount to meet the needs of different cylinders. Subsequently, according to the position of the piston cavity of the cylinder body, the sliding seat 305 is made to slide on the base 1, driving the connecting seat 3, the rotating shaft 301, the sleeve 4, and the grinding and polishing block 404 to move horizontally to the appropriate position, and the electric telescopic rod 304 is started. The electric telescopic rod 304 is extended and retracted to drive the connecting seat 3 to move up and down, and the height of the grinding and polishing block 404 is adjusted to align with the inner wall of the piston cavity of the cylinder body. The electric telescopic rod 304 can drive the rotating shaft 301 to drive the grinding and polishing block 404 to reciprocate up and down in the piston cavity, thereby grinding different height positions of the inner wall of the piston cavity, increasing the comprehensiveness of the grinding and improving the work efficiency. At the same time, the motor 302 is started, and the output end of the motor 302 drives its own gear 303 to rotate. Since the two gears 303 are meshed, the gear 303 on the rotating shaft 301 rotates accordingly, and then drives the rotating shaft 301 to rotate on the connecting seat 3. The rotation of the rotating shaft 301 drives the sleeve 4, the connecting rod 402 and the grinding and polishing block 404 to rotate. At this time, the piston disc 401 slides to the side away from the axis of the rotating shaft 301 under the action of centrifugal force and compresses the spring 406. The piston disc 401 drives the grinding and polishing block 404 to move to the side close to the inner wall of the piston cavity through the connecting rod 402 until it contacts the inner wall of the piston cavity, grinding and polishing the inner wall of the piston cavity. The gear 303 has high transmission efficiency and accurate transmission ratio, which ensures the reliability of power transmission, ensures the stability of the rotation of the rotating shaft 301 and the controllable speed, makes the grinding speed of the grinding and polishing block 404 stable, and improves the uniformity and quality of grinding and polishing; During the grinding process, when the grinding and polishing block 404 contacts the convex part of the inner wall of the piston cavity, the piston disc 401 slides in the sleeve 4, further compressing the spring 406. When the concave part is ground, the spring 406 recovers its deformation and pushes the piston disc 401 to reset, so that the grinding and polishing block 404 is always in close contact with the inner wall of the piston cavity. The spring 406 has a simple structure, low cost, and good reset effect. It can respond to the shape change of the inner wall of the piston cavity in time, ensuring more uniform grinding and improving the grinding quality. At the same time, when the booster pump 201 continuously boosts the air pressure entering the clamping airbag 2 through the air supply pipe 202 and the air pressure is greater than the pressure relief value set by the pressure relief valve, the pressure relief valve automatically opens to relieve pressure, and the excess gas pressurized into the clamping airbag 2 is quickly filled into the sleeve 4 through the pressure relief pipe 1 5, the air supply cavity 501, and the air inlet 502 in sequence. At this time, the internal pressure of the sleeve 4 gradually increases. When the boosted air pressure entering the sleeve 4 is greater than the pressure relief value set by the pressure relief valve, the pressure relief valve automatically opens to relieve pressure, and the gas enters the hollow rod 504 through the pressure relief pipe 2 503 and is ejected from the air nozzle 505 to blow away the debris generated by grinding, thereby preventing the debris from affecting the grinding accuracy. At the same time, keeping the inside of the sleeve 4 in a high-pressure state can prevent the grinding and polishing block 404 from always being in close contact with the inner wall of the piston cavity due to insufficient centrifugal force during the grinding process, thereby ensuring the continuity and effectiveness of grinding and further improving the grinding quality.

[0027] After the grinding and polishing is completed, the booster pump 201 and the motor 302 are turned off, and the solenoid valve on the exhaust pipe 2 506 and the valve switch on the exhaust pipe 1 203 are opened. At this time, the gas in the sleeve 4 is discharged through the exhaust pipe 2 506, and the compressed spring 406 releases its elastic potential energy, pushing the piston disc 401 to move to the side close to the axis of the rotating shaft 301 and reset. The connecting rod 402 on it drives the grinding and polishing block 404 to move synchronously with the piston disc 401, so that it is separated from the inner wall of the piston cavity. In this process, the automatic reset function of the spring 406 does not require additional power, saves energy, and can quickly separate the grinding and polishing block 404 from the cylinder body, avoiding collision when taking and placing the cylinder body. At the same time, the gas in the clamping airbag 2 is discharged through the exhaust pipe 1 203, and the clamping airbag 2 shrinks, which is convenient for removing the cylinder body. The operation is simple and convenient, which improves the efficiency of loading and unloading the cylinder body.

[0028] It should be noted that the air supply pipe 202, the pressure relief pipe 1 5, and the pressure relief pipe 2 503 are all made of stretchable and contractible hoses. Due to this feature, the air supply pipe 202 does not interfere with the movement of the fixed plate 102, the pressure relief pipe 1 5 does not interfere with the lifting and lowering of the connecting seat 3, and the pressure relief pipe 2 503 does not interfere with the movement of the grinding and polishing block 404. A one-way valve is provided on the gas delivery pipe 202 .

[0029] Example 2: Reference Figure 1 、 Figure 2 , an engine cylinder production line, which is basically the same as Example 1, furthermore, a screw rod 6 is rotatably connected to the side wall of the base 1, a guide rod 601 is fixedly connected to the side wall of the base 1, a sliding seat 305 is slidably connected to the guide rod 601, and is threadedly connected to the screw rod 6, and a driving handle 602 is fixedly connected to one end of the screw rod 6.

[0030] Before grinding and polishing the inner wall of the piston cavity of the engine cylinder, it is necessary to adjust the horizontal positions of the connecting seat 3, the rotating shaft 301, the sleeve 4 and the grinding and polishing block 404 according to the horizontal position of the piston cavity of the cylinder. At this time, the operator rotates the driving handle 602, and the driving handle 602 drives the screw rod 6 to rotate on the side wall of the base 1. Since the sliding seat 305 is threadedly connected to the screw rod 6, and the sliding seat 305 is sleeved on the guide rod 601, the guide rod 601 guides and limits the sliding seat 305, preventing the sliding seat 305 from rotating with the screw rod 6. Therefore, the rotational motion of the screw rod 6 is converted into a horizontal linear motion of the sliding seat 305 along the length direction of the guide rod 601. The horizontal movement of the sliding seat 305 will drive the synchronous horizontal movement of the electric telescopic rod 304, connecting seat 3, rotating shaft 301, sleeve 4 and grinding and polishing block 404 thereon. During the movement, the guide rod 601 ensures that the sliding seat 305 always moves in a straight line to avoid deviation, thereby ensuring that the grinding and polishing block 404 can be accurately aligned with the piston chamber entrance of the cylinder body. When it moves to the appropriate position, stop rotating the driving handle 602. Since the threaded connection between the screw rod 6 and the sliding seat 305 is self-locking, the sliding seat 305 will stay stably in the current position without external force and will not move independently, ensuring the stability of subsequent grinding work.

[0031] Among them, the threaded connection between the screw rod 6 and the sliding seat 305 cooperates with the guidance of the guide rod 601, so that the horizontal movement of the sliding seat 305 has extremely high precision, and the rotating shaft 301, sleeve 4 and grinding and polishing block 404 can be accurately adjusted to the position corresponding to the piston cavity, avoiding inaccurate grinding or damage to the cylinder body due to position deviation, effectively improving the grinding quality. At the same time, the setting of the driving handle 602 enables the operator to control the movement of the sliding seat 305 intuitively and conveniently without the need for complex electrical control, reducing the operation difficulty and maintenance cost of the equipment.

[0032] Example 3: Reference Figure 7 , an engine cylinder block production line, which is basically the same as Example 1, furthermore, a fixing box 403 is fixedly connected to the end of the connecting rod 402 away from the piston disc 401, one end of the grinding and polishing block 404 is inserted into the fixing box 403, and a locking bolt 405 is threadedly connected to the fixing box 403 and abuts against the side wall of the grinding and polishing block 404.

[0033] When the grinding and polishing block 404 is worn or needs to be replaced with a different type of grinding block, loosen the locking bolt 405, take the old grinding and polishing block 404 out of the fixing box 403, insert the new grinding and polishing block 404, and tighten the locking bolt 405 to fix it. This detachable connection method makes the replacement of the grinding and polishing block 404 convenient and quick, saves replacement time, and improves work efficiency. At the same time, grinding and polishing blocks 404 of different materials and particle sizes can be replaced according to different grinding requirements, which increases the versatility and flexibility of the equipment and reduces production costs.

[0034] Example 4: Reference Figure 3 , an engine cylinder block production line, which is basically the same as that of embodiment 1, furthermore, a groove is provided on the base 1, and a collection frame 101 is inserted into the groove; The debris generated during the grinding process is blown off by the air nozzle 505, falls into the groove on the base 1, and is finally collected in the collection frame 101. When the collection frame 101 is full, it is pulled out of the groove, the debris is poured out and reinserted. The collection frame 101 can collect the grinding debris in a centralized manner to prevent the debris from scattering and polluting the working environment, making it easy to clean. At the same time, the plug-in method makes it easy to load and unload the collection frame 101, reducing the time and labor intensity of cleaning work, keeping the production line clean, and facilitating equipment maintenance.

[0035] The above description is merely a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as above with the preferred embodiment, it is not intended to limit the present invention.

Claims

1. An engine cylinder block production line, comprising a base (1), characterized in that: Also includes: A fixed plate (102) symmetrically slidably connected to both ends of the base (1); A clamping airbag (2) is arranged on the fixing plate (102), wherein when the clamping airbag (2) is expanded, it can be closely attached to the surface of the cylinder body; A connecting seat (3) connected to the base (1) in a lifting manner; A rotating shaft (301) is rotatably connected to the connecting seat (3); A sleeve (4) is symmetrically fixedly connected to the rotating shaft (301), wherein a piston disc (401) is slidably connected in the sleeve (4), a connecting rod (402) is fixedly connected to the piston disc (401), and a grinding and polishing block (404) is detachably connected to one end of the connecting rod (402) away from the piston disc (401); An elastic reset member, disposed in the sleeve (4) and used to assist the piston disc (401) in resetting; A hollow rod (504) is fixedly connected to the connecting rod (402), wherein the hollow rod (504) is fixedly connected to a plurality of air nozzles (505), the rotating shaft (301) is provided with an air delivery cavity (501), the rotating shaft (301) is provided with air inlet holes (502) respectively connected to the air delivery cavity (501) and the sleeve (4), and the sleeve (4) is connected to the hollow rod (504) through a second pressure relief pipe (503); The pressure relief pipe 1 (5) is connected to the clamping airbag (2). The end of the pressure relief pipe 1 (5) away from the clamping airbag (2) is connected to the air delivery cavity (501) through a rotary joint. The rotary joint is arranged on the rotating shaft (301). The pressure relief pipe 1 (5) and the pressure relief pipe 2 (503) are both provided with pressure relief valves.

2. The engine cylinder production line according to claim 1, characterized in that: A cylinder (103) is fixedly mounted on the base (1), and the fixed plate (102) is fixedly connected to the telescopic end of the cylinder (103).

3. The engine cylinder production line according to claim 1, characterized in that: A booster pump (201) is fixedly mounted on the base (1), and an output end of the booster pump (201) is connected to the clamping airbag (2) via an air delivery pipe (202). An exhaust pipe 1 (203) is fixedly connected to the clamping airbag (2), and a valve switch is provided on the exhaust pipe 1 (203).

4. The engine cylinder production line according to claim 1, characterized in that: A motor (302) is fixedly mounted on the connecting seat (3), and gears (303) are fixedly mounted on the output end of the motor (302) and the rotating shaft (301), and the two gears (303) are meshed and connected.

5. The engine cylinder production line according to claim 4, characterized in that: The base (1) is slidably connected to a sliding seat (305), the sliding seat (305) is fixedly connected to an electric telescopic rod (304), and the connecting seat (3) is fixedly connected to the telescopic end of the electric telescopic rod (304).

6. The engine cylinder production line according to claim 5, characterized in that: A screw rod (6) is rotatably connected to the side wall of the base (1), a guide rod (601) is fixedly connected to the side wall of the base (1), the sliding seat (305) is slidably connected to the guide rod (601) and is threadedly connected to the screw rod (6), and a driving handle (602) is fixedly connected to one end of the screw rod (6).

7. The engine cylinder production line according to claim 1, characterized in that: The sleeve (4) is fixedly connected to a second exhaust pipe (506), and a solenoid valve is provided on the second exhaust pipe (506).

8. The engine cylinder production line according to claim 7, characterized in that: The elastic return member includes a spring (406), which is arranged in the sleeve (4). One end of the spring (406) is fixedly connected to the piston disc (401), and the other end is fixedly connected to the inner wall of the sleeve (4).

9. The engine cylinder production line according to claim 1, characterized in that: A fixing box (403) is fixedly connected to one end of the connecting rod (402) away from the piston disc (401), one end of the grinding and polishing block (404) is inserted into the fixing box (403), and a locking bolt (405) is threadedly connected to the fixing box (403) and abuts against the side wall of the grinding and polishing block (404).

10. The engine cylinder production line according to claim 1, characterized in that: The base (1) is provided with a groove, and a collection frame (101) is inserted into the groove.

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