A fully automatic piston cleaning machine

Abstract

The present invention provides a fully automatic piston cleaning machine, which mainly relates to the field of casting demoulding. A fully automatic piston cleaning machine includes a cleaning platform. A limiting hole is provided in the middle of the cleaning platform. Both sides of the limiting hole have sliding grooves. An adjusting plate is slidably arranged in the sliding grooves. A shaft seat is slidably arranged in the mounting hole. A clamping device is rotatably arranged on the shaft seat. An arc-shaped limiting slideway is arranged on one side of the cleaning platform. A liftable first limiter and a second limiter are arranged inside the limiting slideway. The position of the limiting slideway where the first limiter is located is the cleaning station, and the position of the limiting slideway where the second limiter is located is the sawing station. A lifting table is arranged below the sawing station. A rotating table is rotatably arranged on the lifting table. An inner support chuck is arranged on the top of the rotating table. A sawing machine is arranged on the top of the lifting frame. The beneficial effects of the present invention are as follows: The present invention improves the efficiency and cleanliness of piston cleaning after demoulding, reduces the participation of manpower, and reduces the degree of harm to the human body.

Description

Technical Field

[0001] The present invention mainly relates to the field of casting demoulding, and specifically, it is a fully automatic piston cleaning machine. Background Art

[0002] Pistons are mainly divided into two types: cast pistons and forged pistons. Among them, cast pistons have low costs and are inexpensive, which can greatly improve production efficiency and are widely used in small engines with low precision requirements. Before casting the piston, the wax patterns are grouped into a tree structure so that the subsequent sand mold can be used to cast multiple pistons at one time. In the common wax pattern tree grouping process, individual piston wax patterns are thermally connected to the main runner in a circular shape through a runner mold. Through this divergent tree grouping method, multiple piston mold cavities can be uniformly formed, ensuring the forming effect of the pistons and reducing the formation of internal air chambers and sand holes.

[0003] After the piston casting is completed, the sand mold is mechanically broken unmanned, and finally the cast piston blank is exposed. However, there is still a lot of fine sand residue on the piston blank after vibration breaking, and even stubborn fine sand lumps still remain inside the piston cavity. These fine sands usually need to be manually cleaned, with low cleaning efficiency and large pollution, and the more personnel are required, the greater the harm. And this process is usually carried out after the process of sawing off the riser, which causes the fine sand to be carried to the next process and the transfer path, polluting the production environment and disturbing other processing machines at the same time, affecting the processing accuracy of lathes, machining centers, etc. Summary of the Invention

[0004] To solve the deficiencies of the prior art, the present invention provides a fully automatic piston cleaning machine, which can complete the fine sand cleaning of the piston before the process of sawing off the riser, and at the same time complete the sawing work, improving the cleaning efficiency and cleanliness after the piston is demolded, reducing the participation of manpower, and reducing the degree of harm to the human body.

[0005] To achieve the above object, the present invention is realized through the following technical solutions:

[0006] A fully automatic piston cleaning machine, comprising a cleaning platform. A limiting hole is provided in the middle of the cleaning platform. Both sides of the limiting hole have sliding grooves. An adjusting plate is slidably arranged in the sliding grooves. A pressing spring is arranged between one end of the adjusting plate and the sliding groove. An installation hole is formed in the adjusting plate. A shaft seat is slidably arranged in the installation hole. A buffer spring is arranged between the bottom of the shaft seat and the installation hole. A clamping device is rotatably arranged on the shaft seat. A driving motor is arranged below the cleaning platform. A transmission flexible shaft is connected between the driving motor and the clamping device. An arc-shaped limiting slideway is arranged on one side of the cleaning platform. The limiting slideway is coaxial with the central axis of the limiting hole. One end of the limiting slideway is provided with an expanding flared opening. A liftable first limiter and a second limiter are arranged on the inner side of the limiting slideway. The position of the limiting slideway where the first limiter is located is the cleaning station. The position of the limiting slideway where the second limiter is located is the sawing station. A purging station is provided between the cleaning station and the sawing station. An upper cleaning frame is arranged above the cleaning station. An upper mounting plate is slidably arranged vertically on the upper cleaning frame. An upper extension cylinder is arranged between the upper mounting plate and the upper cleaning frame. An upper cleaning disk brush is rotatably arranged on the upper mounting plate. An upper cleaning motor for driving the upper cleaning disk brush to rotate is arranged on the upper mounting plate. A lower cleaning frame is arranged below the cleaning station. A lower mounting plate is slidably arranged vertically on the lower cleaning frame. A lower extension cylinder is arranged between the lower mounting plate and the lower cleaning frame. A lower cleaning disk brush and a pair of lower cleaning column brushes are rotatably arranged on the lower mounting plate. The two lower cleaning column brushes are arranged inside the lower cleaning disk brush. A lower cleaning motor for driving the lower cleaning disk brush and the lower cleaning column brushes to rotate is arranged on the lower mounting plate. A plurality of high-pressure nozzles are arranged at the top and bottom of the purging station. A lifting platform is arranged below the sawing station. A turning platform is rotatably arranged on the lifting platform. A turning motor for driving the turning platform to rotate is arranged on the lifting platform. An inner support chuck is arranged at the top of the turning platform. A slideway adapted to the turning platform is arranged on one side of the lifting platform. A jacking frame is arranged on the other side of the lifting platform. A sawing machine is arranged at the top of the jacking frame.

[0007] The clamping device is an electric chuck, and the operation of the clamping device is controlled by a foot-operated control switch.

[0008] Limiting slide rails are arranged at the top and bottom of the sliding groove. Sliding pairs adapted to the limiting slide rails are arranged at the top and bottom of the adjusting plate. A sealing member is arranged in the sliding groove, and the sealing member abuts against the adjusting plate.

[0009] Limiting cylinders are arranged at the bottoms of the first limiter and the second limiter. When the first limiter or the second limiter is triggered by a piston runner, the first limiter and the second limiter are retracted below the cleaning platform by the limiting cylinders.

[0010] After the piston enters the limit slideway, the top spring is in a compressed state, thus pressing the piston tightly against the outer arc edge of the limit slideway.

[0011] The upper cleaning disk brush includes a bottom surface and an inclined side surface. The bottom surface and the side surface of the upper cleaning disk brush together form a disk shape. The bottom surface of the lower cleaning disk brush is hollow.

[0012] The bottom surface of the upper cleaning disk brush has vertical bristles, and the side edges of the upper cleaning disk brush and the lower cleaning disk brush have side bristles that extend obliquely towards the center.

[0013] The lower cleaning column brush is columnar. The side edge of the lower cleaning column brush has columnar brush bristles, and the top surface of the lower cleaning column brush has crushing teeth.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The present invention can clean the piston blank after demolding and perform sawing of the piston blank after cleaning. This device completes the cleaning and sawing operations of the piston blank through one clamping, improves production efficiency, and improves the automation degree of cleaning and sawing of the piston blank.

[0016] When operating this device, only one worker is needed to load the piston blank. The cleaning and sawing of the piston blank are completed through an automated operation program, greatly reducing the use of manpower in the cleaning process of the piston blank, thereby reducing the harm of foundry fine sand to the human body.

[0017] This device is connected downstream of the vibration demolding process. The piston blank after vibration demolding is transported to this device through a conveyor belt. After cleaning and sawing, the piston blank is transported to a more downstream turning process through a conveying device. Through the automated cleaning process, the surface of the workpiece is cleaner, thereby reducing the spread of foundry sand in the workshop, ensuring the clean environment of the workshop, and avoiding the influence of fine sand on the equipment. Brief Description of the Drawings

[0018] Attached Figure 1 is a reference view of the present invention in use;

[0019] Attached Figure 2 is a three-dimensional perspective structural schematic diagram of the present invention;

[0020] Attached Figure 3 is a top-view structural schematic diagram of the present invention;

[0021] Attached Figure 4 is a front-view structural schematic diagram of the present invention;

[0022] Attached Figure 5 is a partial-view structural schematic diagram of the present invention;

[0023] Attached Figure 6 is a schematic structural diagram of the drive assembly of the present invention;

[0024] Attached Figure 7 is a schematic structural diagram of the sawing station of the present invention.

[0025] Reference numerals shown in the attached drawings: 1, cleaning platform; 2, limiting hole; 3, adjusting plate; 4, shaft seat; 5, clamping device; 6, drive motor; 7, lifting table; 8, turning table; 9, jacking frame; 11, limiting slideway; 12, bell mouth; 13, first limiter; 14, second limiter; 15, upper cleaning frame; 16, lower cleaning frame; 17, high-pressure nozzle; 21, chute; 22, jacking spring; 23, limiting slide rail; 31, mounting hole; 32, buffer spring; 71, turning motor; 72, slideway; 81, inner support chuck; 91, sawing machine; 151, upper mounting plate; 152, upper extension cylinder; 153, upper cleaning disc brush; 154, upper cleaning motor; 161, lower mounting plate; 162, lower extension cylinder; 163, lower cleaning disc brush; 164, lower cleaning column brush; 165, lower cleaning motor; 166, crushing tooth. Specific embodiments

[0026] In combination with the attached drawings and specific embodiments, the present invention will be further described. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by this application.

[0027] Since the piston blanks completed by casting are arranged around the main runner in a planetary manner, the present device utilizes this feature to drive the main runner to rotate by rotation, so that the piston blanks pass through the cleaning process and the sawing process in sequence, thereby completing the cleaning and sawing operations of the piston blanks in one operation, improving the cleaning efficiency of the piston blanks, reducing the degree of human participation in the piston cleaning link, and thus reducing the physical harm to the operators.

[0028] Such as Figure 1-7As shown in the figure, the full-automatic piston cleaning machine of the present invention includes a cleaning platform 1. A limiting hole 2 is provided in the middle of the cleaning platform 1. Both sides of the limiting hole 2 have sliding grooves 21. An adjusting plate 3 is slidably installed in the sliding grooves 21, and the adjusting plate 3 can perform linear displacement along the sliding grooves 21. A tension spring 22 is installed between one end of the adjusting plate 3 and the sliding groove 21. The tension spring 22 provides elastic force for the adjusting plate 3 so that the adjusting plate 3 can keep in contact with the limiting slideway 11 to position the piston in the subsequent process. Specifically, limiting slide rails 23 are installed at both the top and bottom of the sliding groove 21. Sliding pairs matching the limiting slide rails 23 are provided at both the top and bottom of the adjusting plate 3. A sealing member is installed at the part of the sliding groove 21 connected to the limiting hole 21. The sealing glue is made of rubber material. The sealing member is in sliding contact with the adjusting plate 3, and the adjusting plate 3 is in sliding contact with the sealing member, so as to seal the sliding groove 21 and prevent fine sand from entering the sliding groove 21 and affecting the sliding fit of the adjusting plate 3.

[0029] An installation hole 31 is provided on the adjusting plate 3. A shaft seat 4 is slidably installed in the installation hole 31. A buffer spring 32 is provided between the bottom of the shaft seat 4 and the installation hole 31. The buffer spring 32 provides elastic force for the shaft seat 4 so that the shaft seat 4 can slide up and down on the adjusting plate 3. A clamping device 5 is rotatably installed on the shaft seat 4. The clamping device 5 clamps the main runner of the piston blank, so as to drive the piston blank. Specifically, the clamping device 5 adopts an electric chuck, and the action of the clamping device 5 is controlled by a foot-operated control switch. When the cast piston blank is clamped on the electric chuck, the main runner is placed between the jaws of the electric chuck. Step on the switch to control the electric chuck to clamp the main runner. After the cleaning and cutting operations are completed, step on the switch again to remove the remaining runner after cutting and wait for subsequent melting and reuse.

[0030] A driving motor 6 is installed below the cleaning platform 1. A transmission flexible shaft 61 is connected between the driving motor 6 and the clamping device 5. The driving motor 6 drives the electric chuck to rotate through the transmission flexible shaft 61. Through the setting of the transmission flexible shaft 61, the driving device can adapt to the linear movement of the adjusting plate 3 and the lifting of the shaft seat 4.

[0031] An arc-shaped limiting slideway 11 is installed on one side of the cleaning platform 1. The limiting slideway 11 is coaxial with the central axis of the limiting hole 2, and the limiting slideway 11 positions the piston blank. In the manual tree-assembling process, there are slight differences in the distance between the pistons and the main runner. By positioning the rotation of the piston blank through the limiting slideway 11, the running diameters of the piston blanks on the circumference are made consistent. One end of the limiting slideway 11 is provided with an involute flare 12, and the piston blank is guided through the flare 12 so that the piston blank can be stably guided into the limiting slideway 11 for positioning. Specifically, taking the structure in which five piston blanks are arranged around the main runner in normal casting as an example, the angle of the limiting slideway 11 is less than 72 degrees to avoid interference between the piston blanks. When the piston enters the limiting slideway 11, the pressing spring 22 is in a compressed state, thus pressing the piston tightly against the outer arc edge of the limiting slideway 11.

[0032] A liftable first limiter 13 and a second limiter 14 are installed inside the limiting slideway 11. The position of the limiting slideway 11 where the first limiter 13 is located is the cleaning station, and the position of the limiting slideway 11 where the second limiter 14 is located is the sawing station. Both the first limiter 13 and the second limiter 14 are driven to lift by limiting cylinders, and the first limiter 13 and the second limiter 14 are contact sensors. When the first limiter 13 or the second limiter 14 is triggered by the piston runner, the first limiter 13 and the second limiter 14 are retracted by the limiting cylinders below the cleaning platform 1. After the first limiter 13 and the second limiter 14 are triggered, signals are transmitted to the controller, and the controller controls the actions of the cleaning device or the sawing device. There is a purging station between the cleaning station and the sawing station. The cleaning station cleans the external and internal fine sand and fine sand agglomerates of the piston blank. The purging station further purges the outer and inner sides of the piston blank with high-pressure air to complete the thorough cleaning of the piston blank. The sawing device completes the sawing separation of the piston blank from the runner.

[0033] Specifically, the top and bottom of the limiting slideway 11 at the cleaning station have notches, which facilitate the subsequent actions of the upper cleaning disk brush 153 and the lower cleaning disk brush 163. The middle part of the limiting slideway 11 is only connected by a relatively narrow connecting piece, which can limit the piston blank. An upper cleaning frame 15 is installed above the cleaning station. An upper mounting plate 151 is slidably installed vertically on the upper cleaning frame 15. An upper extension cylinder 152 is arranged between the upper mounting plate 151 and the upper cleaning frame 15, and the upper extension cylinder 152 is used to push the upper mounting plate 151 to linearly lift vertically. An upper cleaning disk brush 153 is rotatably installed on the upper mounting plate 151, and an upper cleaning motor 154 for driving the upper cleaning disk brush 153 to rotate is arranged on the upper mounting plate 151. The upper cleaning disk brush 153 includes a bottom surface and an inclined side surface, and the bottom surface and the side surface of the upper cleaning disk brush 153 together form a disk shape. Vertical bristles are provided on the bottom surface of the upper cleaning disk brush 153, and side bristles extending obliquely towards the center are provided on the side edge of the upper cleaning disk brush 153. The vertical bristles clean the bottom surface of the piston blank, and the side bristles clean the upper half of the outer side surface of the piston blank. The upper cleaning motor 154 drives the upper cleaning disk brush 153, so that the vertical bristles and the side bristles rotate along with the piston blank, thereby completing the fine sand cleaning of the top part of the outer side of the piston. A lower cleaning frame 16 is installed below the cleaning station. A lower mounting plate 161 is slidably installed vertically on the lower cleaning frame 16. A lower extension cylinder 162 is arranged between the lower mounting plate 161 and the lower cleaning frame 16, and the lower extension cylinder 162 is used to drive the lower mounting plate 161 to linearly lift vertically. A lower cleaning disk brush 163 and a pair of lower cleaning column brushes 164 are rotatably installed on the lower mounting plate 161. The two lower cleaning column brushes 164 are arranged inside the lower cleaning disk brush 163. A lower cleaning motor 165 for driving the lower cleaning disk brush 163 and the lower cleaning column brushes 164 to rotate is arranged on the lower mounting plate 161. The bottom surface of the lower cleaning disk brush 163 is a hollow structure, and the two lower cleaning column brushes 164 are arranged at the hollow bottom surface of the lower cleaning disk brush 163. Specifically, side bristles extending obliquely towards the center are provided on the side edge of the lower cleaning disk brush 163, and the lower cleaning disk brush 163 is used to clean the outer bottom of the piston blank. The lower cleaning column brush 164 is columnar, columnar bristles are provided on the side edge of the lower cleaning column brush 164, and crushing teeth 166 are provided on the top surface of the lower cleaning column brush 164. The two lower cleaning column brushes 164 respectively clean both sides inside the piston cavity, and the crushing teeth 166 crush and clean the possible fine sand lumps on the bottom surface of the piston cavity, thereby ensuring the cleaning effect of the fine sand on the piston. More specifically, the crushing teeth 166 are made of nylon material to avoid scratching the inner side of the piston.

[0034] More specifically, the lower cleaning motor 165 drives the lower cleaning disc brush 163 and two lower cleaning column brushes through a gear box. The outer side of the lower cleaning disc brush 163 is rotatably mounted on the lower mounting plate 161. One of the output shafts of the gear box is driven by a belt with the lower cleaning disc brush 163, and the two lower cleaning column brushes 164 are directly coaxially mounted with the two output shafts of the gear box.

[0035] A plurality of high-pressure nozzles 17 are arranged at the top and bottom of the purging station. The high-pressure nozzles 17 are connected to an air pump or a blower, and the inside and outside of the piston are purged and cleaned by high-pressure air, and the floating sand still remaining on the piston is purged. Specifically, 2-4 high-pressure nozzles 17 are arranged at the top, and the high-pressure nozzles 17 at the top are inclined toward the track where the piston blank is located. 3-5 high-pressure nozzles 17 are arranged at the bottom, of which 2-4 low-pressure nozzles 17 are arranged symmetrically with the high-pressure nozzles 17 at the top, and one high-pressure nozzle 17 is arranged vertically for purging the inside of the piston.

[0036] A lifting platform 7 is arranged below the sawing station, and the lifting platform 7 is driven by a hydraulic cylinder to lift vertically. A turning platform 8 is rotatably mounted on the lifting platform 7, and concentric rotating shafts are arranged on both sides of the turning platform 8. The rotating shafts are rotatably mounted with the shaft seats on the lifting platform 7 to complete the smooth turning of the turning platform 8. A limit sensor is arranged on the shaft seat to determine the rotation angle of the turning platform 8 to ensure the horizontal position of the turning platform 8 after resetting. A turning motor 71 for driving the turning platform 8 to rotate is arranged on the lifting platform 7, and the turning motor 71 is connected to the rotating shaft on one side of the turning platform 8 through a coupling. An inner support chuck 81 is installed on the top of the turning platform 8. When the lifting platform 7 is raised, the claws of the inner support chuck 81 enter the inner cavity of the piston for clamping. A slideway 72 corresponding to the turning platform 8 is installed on one side of the lifting platform 7. After the sawing and separation of the piston blank and the runner is completed, the turning platform 8 is driven to turn over and falls onto the slideway 72 for diversion. The bottom of the slideway 72 can be connected to a belt conveyor, so that the piston blank can be received and transported to the next process. A lifting frame 9 is installed on the other side of the lifting platform 7, and a sawing machine 91 is installed on the top of the lifting frame 9. The lifting frame 9 is driven by a hydraulic cylinder, and the saw blade of the sawing machine 91 is a circular saw blade. When the sawing machine 91 is lifted up, the split runner can be sawed close to the piston blank to separate the piston blank.

[0037] Each action element of the device is controlled by the controller, and each sensor is electrically connected to the controller.

[0038] Specifically, according to the time sequence, the operation process of this equipment is as follows: First, the operator clamps the main runner of the piston blank on the clamping device 5. Then, under the control of the controller, the whole equipment starts, and the clamping device 5 drives the piston blank to rotate under the drive of the drive motor 6. The piston blank rotates and enters the bell mouth 12 and is guided, and then enters the limit slideway 11. At this time, the top spring 22 is in a compressed state, and the top spring 22 pushes the adjustment plate 3 to press the outer wall of the piston blank against the outer wall of the limit slideway 11 to make up for the length error of the distance between different piston blanks and the axis of the main runner. As the clamping device 5 continues to rotate, the sub-runner of the piston blank that enters the limit slideway 11 first triggers the first limiter 13. At this time, the piston blank is in the cleaning station. Then, the first limiter 13 transmits a signal to the controller, and the controller controls the drive motor 6 to stop and the upper extension cylinder 152 to press down. During the pressing down process of the upper extension cylinder 152, the bottom surface of the upper cleaning disc brush 153 presses the bottom surface of the piston. At this time, the shaft seat 4 slides up and down for buffering to make up for the height error of different piston blanks on the main runner. Then, the lower extension cylinder 162 extends, and the lower cleaning disc brush 163 contacts the outer wall at the bottom of the piston blank, and the two lower cleaning column brushes 164 are inserted into the cavity of the piston blank for cleaning. After the cleaning is completed, both the upper extension cylinder 152 and the lower extension cylinder 162 contract, so that the upper cleaning disc brush 153, the lower cleaning disc brush 163, and the lower cleaning column brush 164 all disengage from the piston blank. Immediately afterwards, the first limiter 13 retracts under the cleaning platform 1, and the drive motor 6 starts to drive the piston blank to continue rotating through the clamping device 5. The piston blank passes through the purging station, and the outer wall and inner cavity of the piston blank are purged by the high-pressure nozzle 17 to remove floating sand. At the same time, the first limiter 13 resets. Then, the sub-runner of the piston blank triggers the second limiter 14. After receiving the signal from the second limiter 14, the controller controls the drive motor 6 to stop rotating and the lifting table 7 to rise. The inner support chuck 81 enters the cavity of the piston for clamping. While the inner support chuck 81 is clamping, the second limiter 14 retracts under the cleaning platform 1 to release the piston blank. After the inner support chuck 81 clamps the piston blank, the lifting frame 9 rises, and the sawing machine 91 is used to cut the sub-runner close to the piston blank to separate the piston blank. Then, the lifting frame 9 descends and the lifting table 7 descends. The drive motor 6 drives the piston blank to continue rotating, so that the next piston blank enters the limit slideway 11. At the same time, the turning table 8 turns over, releases the piston blank into the slideway 72 and then resets, and at the same time the second limiter 14 resets. After all piston blanks have been cleaned and sawed, manually control the drive motor 6 to stop, remove the runner, and then replace with a new piston blank for cleaning and sawing operations.

Claims

1. A fully automatic piston cleaning machine, comprising a cleaning platform (1), characterized in that: A limiting hole (2) is provided in the middle of the cleaning platform (1). Both sides inside the limiting hole (2) are provided with sliding grooves (21). An adjusting plate (3) is slidably arranged in the sliding grooves (21). A pressing spring (22) is arranged between one end of the adjusting plate (3) and the sliding groove (21). An installation hole (31) is formed in the adjusting plate (3). A shaft seat (4) is slidably arranged in the installation hole (31). A buffer spring (32) is arranged between the bottom of the shaft seat (4) and the installation hole (31). A clamping device (5) is rotatably arranged on the shaft seat (4). A driving motor (6) is arranged below the cleaning platform (1). A transmission flexible shaft (61) is connected between the driving motor (6) and the clamping device (5); An arc-shaped limiting slideway (11) is arranged on one side of the cleaning platform (1). The limiting slideway (11) is coaxial with the central axis of the limiting hole (2). One end of the limiting slideway (11) is provided with an involute flared opening (12). The limiting slideway (11) and the flared opening (12) are arranged on the cleaning platform (1) in a plate-like standing manner. A liftable first limiter (13) and a second limiter (14) are arranged inside the limiting slideway (11). Limiting cylinders are arranged at the bottoms of the first limiter (13) and the second limiter (14). When the first limiter (13) or the second limiter (14) is triggered by the piston runner, the first limiter (13) and the second limiter (14) are retracted below the cleaning platform (1) by the limiting cylinders. The position of the limiting slideway (11) where the first limiter (13) is located is the cleaning station, and the position of the limiting slideway (11) where the second limiter (14) is located is the sawing station. A purging station is provided between the cleaning station and the sawing station;Above the cleaning station, an upper cleaning rack (15) is provided. An upper mounting plate (151) is slidably arranged vertically on the upper cleaning rack (15). An upper extension cylinder (152) is arranged between the upper mounting plate (151) and the upper cleaning rack (15). An upper cleaning disk brush (153) is rotatably arranged on the upper mounting plate (151). An upper cleaning motor (154) for driving the upper cleaning disk brush (153) to rotate is arranged on the upper mounting plate (151). Below the cleaning station, a lower cleaning rack (16) is provided. A lower mounting plate (161) is slidably arranged vertically on the lower cleaning rack (16). A lower extension cylinder (162) is arranged between the lower mounting plate (161) and the lower cleaning rack (16). A lower cleaning disk brush (163) and a pair of lower cleaning column brushes (164) are rotatably arranged on the lower mounting plate (161). The two lower cleaning column brushes (164) are arranged inside the lower cleaning disk brush (163). A lower cleaning motor (165) for driving the lower cleaning disk brush (163) and the lower cleaning column brushes (164) to rotate is arranged on the lower mounting plate (161). A plurality of high-pressure nozzles (17) are arranged at the top and bottom of the blowing station. Below the sawing station, a lifting table (7) is provided. A turning table (8) is rotatably arranged on the lifting table (7). A turning motor (71) for driving the turning table (8) to rotate is arranged on the lifting table (7). An inner support chuck (81) is arranged at the top of the turning table (8). A slideway (72) adapted to the turning table (8) is arranged on one side of the lifting table (7). A jacking frame (9) is arranged on the other side of the lifting table (7). A sawing machine (91) is arranged at the top of the jacking frame (9).; 2. The full-automatic piston cleaning machine according to claim 1, characterized in that: The clamping device (5) is an electric chuck, and the operation of the clamping device (5) is controlled by a foot-operated control switch.

3. The full-automatic piston cleaning machine according to claim 1, characterized in that: Limit slide rails (23) are arranged at both the top and the bottom inside the sliding groove (21). Sliding pairs that match with the limit slide rails (23) are arranged at both the top and the bottom of the adjusting plate (3). A sealing member is arranged inside the sliding groove (21), and the sealing member abuts against the adjusting plate (3).

4. A fully automatic piston cleaning machine according to claim 1, characterized in that: After the piston enters the limit slideway (11), the top spring (22) is in a compressed state, so as to tightly press the piston towards the limit slideway (11).

5. The fully automatic piston cleaning machine according to claim 1, wherein: The upper cleaning disc brush (153) includes a bottom surface and an inclined side surface. The bottom surface and the side surface of the upper cleaning disc brush (153) jointly form a disc shape. The bottom surface of the lower cleaning disc brush (163) is hollow.

6. A fully automatic piston cleaning machine according to claim 5, characterized in that: Vertical bristles are arranged on the bottom surface of the upper cleaning disc brush (153). Side bristles that extend obliquely towards the center are arranged on the side edges of the upper cleaning disc brush (153) and the lower cleaning disc brush (163).

7. A fully automatic piston cleaning machine according to claim 1, wherein: The lower cleaning column brush (164) is columnar. Columnar bristles are arranged on the side edge of the lower cleaning column brush (164). Crushing teeth (166) are arranged on the top surface of the lower cleaning column brush (164).

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