Household appliance plate shearing device and using method thereof

Abstract

The invention discloses a household appliance plate shearing device and a using method thereof, and particularly relates to the technical field of household appliance plate shearing, according to the household appliance plate shearing device, an abutting and pushing unit and a linear grinding unit are matched, after a shearing device works, the abutting and pushing unit firstly moves downwards, that is, an expansion part is pushed downwards by a first telescopic rod, and the linear grinding unit is moved downwards; the abutting part at the bottom of the expansion part firstly abuts against and pushes the sheared plate, and the finger air cylinder pushes the push plate to act on the plate on the corresponding side, so that the plate moves towards the two sides of the blocking adjusting unit from the shearing position; then, a grinding piece in the linear grinding unit is pushed by a second telescopic rod to move downwards and enter the position between the plates moving towards the two sides, under meshing of a gear, the position of a sleeve is deflected, then the angle of polishing wheels on the two sides is changed, and due to longitudinal linear sliding, the upper edge of the shearing position is linearly ground, so that the machining precision is improved. The edge of the plate is polished, so that the plate is in arc transition, and the quality of the sheared plate is improved.

Description

Technical Field

[0001] This invention relates to the field of cutting technology for household appliance sheet materials, specifically to a cutting device for household appliance sheet materials and its usage method. Background Technology

[0002] A shearing device is a type of metal processing equipment commonly used for shearing sheet metal (such as stainless steel, aluminum, and copper). During sheet metal processing, shearing is necessary to cut off excess material to achieve the required dimensions or shapes. In mass production, factories often utilize shearing devices for batch shearing of sheet metal. Sheet metal shearing includes steps such as loading, shearing, and unloading.

[0003] A search revealed that the invention patent with publication number CN117340341A discloses an automotive sheet metal shearing device that can shear sheet metal while pressing it, and the orientation of the sheet metal can be adjusted, making it highly practical.

[0004] The above method involves placing the workpiece directly on the shearing table, which often requires manual calibration, consuming a lot of time and effort. However, placement errors still exist, affecting the shearing effect. In addition, burrs remain on both edges of the sheared sheet, affecting product quality and easily scratching human skin. Summary of the Invention

[0005] The purpose of this invention is to provide a cutting device for household appliance sheet metal and a method for using it, so as to solve the problems mentioned in the background art.

[0006] The main technical problem solved by this invention is: In the existing method, burrs remain on both edges of the sheared sheet, affecting product quality and easily scratching human skin. The method of placing the workpiece directly on the shearing table and manually calibrating it introduces placement errors, which affect the shearing effect.

[0007] This invention can be achieved through the following technical solutions: A cutting device for household appliance sheet metal includes a base with a conveyor belt inside, a cutting chamber located on the upper surface of the base above the conveyor belt, a pressing and cutting assembly for cutting sheet metal is provided in the inner cavity of the cutting chamber, and a blocking and adjusting unit for positioning sheet metal is provided inside the cutting chamber. The pressing and cutting assembly is provided with a pushing unit and a linear grinding unit inside. The pushing unit includes an expansion section that moves vertically upwards and downwards. The bottom of the expansion section is provided with a pointed abutting part, and a finger cylinder is provided in the empty groove inside the expansion section. The two driving ends of the finger cylinder are connected to the pushing part respectively. Push plates pushed by the corresponding pushing parts are slidably installed on both sides of the expansion section. The linear grinding unit includes a grinding component that moves in the longitudinal direction. The grinding component includes two meshing gears. A sleeve is fixed to the shaft end of each gear. A polishing wheel, driven by a drive motor, is rotatably mounted on the end of the sleeve to grind the upper edge of the sheared sheet metal.

[0008] A further technical improvement of the present invention is that: the pressure-holding shearing assembly includes a support horizontal plate fixed to the inner wall of the shearing chamber and a self-rotating worm gear. A worm wheel rotatably mounted on the top of the support horizontal plate is engaged with the worm gear. A transmission screw is threadedly connected to the middle of the worm wheel. A transmission plate is connected to the bottom end of the transmission screw. A lifting and rotating shear is slidably mounted on the mounting seat at the bottom of the transmission plate. A pressure plate is connected to the bottom surface of the transmission plate through a telescopic rod. The rotation angle of the shear is 180 degrees.

[0009] A further technical improvement of the present invention is that: the outer side of the shear is provided with a compression part mounted on the bottom mounting seat of the transmission plate; the middle surface of the pressure plate is provided with a gap for the shear, the expansion part and the polishing wheel to pass through.

[0010] A further technical improvement of the present invention is that the linear grinding unit further includes a driving part that is slidably disposed on the bottom of the transmission plate and pushed by the second telescopic rod. The end of the driving part is connected to the mounting plate. The two sides of the mounting plate are provided with arc-shaped grooves that are at the same point as the center of the corresponding gear. A locking post is slidably connected inside the arc-shaped groove. A connecting rod is fixed to the end of the locking post. The connecting rod is fixed to the outer side of the sleeve on the corresponding side.

[0011] A further technical improvement of the present invention is that: the blocking adjustment unit includes two eccentric plates that are slidably limited on the end of the worm gear, the two eccentric plates are spaced 180 degrees apart, and the end of each eccentric plate abuts against a contact block. The end of one contact block is fixed with a stop portion with an elastic bottom, and the end of the other contact block is fixed with a connecting portion. The end of the connecting portion is fixed with an L-shaped pusher, and the bottom end of the pusher is provided with an automatically resetting movable block. One outer wall of the shearing chamber is provided with a limiting groove for the sliding of the pusher.

[0012] A further technical improvement of the present invention is that: both inner walls of the shearing chamber are provided with grooves, and a slider is slidably provided inside each groove. A spring is installed on the bottom surface of the slider, and a telescopic member is provided on the side of the slider. One end of the telescopic member is fixed to the blocking part, and one end of the other telescopic member is fixed to the connecting part.

[0013] A further technical improvement of the present invention is that a hydraulic cylinder is installed on the inner wall surface of the shearing chamber above the slide groove, and the pushing end of the hydraulic cylinder is connected to a track block; The surface of the eccentric piece is provided with a groove that slides with the track block, and the eccentric piece slides along the key block on the worm.

[0014] A further technical improvement of the present invention is that: a fixed plate is provided on both outer sides of the base, and a sliding plate driven by a synchronous cylinder is provided on both inner sides of the base above the conveyor belt. A limit rod is fixed on the outer side of each sliding plate, and the limit rod is slidably arranged with the fixed plate on the corresponding side.

[0015] A method of using a cutting device for household appliance sheet metal includes the following steps: Step 1: After the blocking part in the blocking adjustment unit moves down, it slides horizontally, and another connecting part moves down to drive the pushing part to initially position the sheet metal; Step 2: Next, the pressing and shearing assembly moves downward, pressing the sheet material with the pressure plate, and shearing the sheet material with the sliding shear. Then, the expansion part in the pushing unit pushes the sheared sheet material downward, and the push plate pushes the sheet material on both sides towards the blocking part and the connecting part respectively. Step 3: The linear grinding unit descends and slides, and under the meshing transmission of gears, it drives the polishing wheels on both sides at an inclined angle to grind the upper edge of the sheet material.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up a push unit and a linear grinding unit in coordination, after the shearer starts working, the push unit moves downward first, that is, the first telescopic rod pushes the expansion part downward, and the bottom of the expansion part pushes the sheared plate first, and the finger cylinder pushes the push plate to act on the plate on the corresponding side, so that the plate moves from the shearing position to both sides of the blocking adjustment unit; then the grinding part in the linear grinding unit is pushed downward by the second telescopic rod and enters between the plates moving to both sides. Under the meshing of the gears, the position of the sleeve is deflected, thereby changing the angle of the polishing wheels on both sides. Due to the longitudinal linear sliding, the upper edge of the shearing position is linearly ground to grind the edge of the plate, making it an arc transition and improving the quality of the sheared plate; 2. By setting up a blocking adjustment unit, when entering from the inlet of the shearing chamber, the connecting part and the pushing part are located directly above the conveyor belt and are in an open state, which facilitates material feeding. When the worm rotates, it drives the eccentric piece to push against a contact block, thereby causing the blocking part to move down. Then, the hydraulic cylinder on one side pushes the eccentric piece on the corresponding side to slide in the worm and leave the position of the key block, releasing the following transmission and flipping of the eccentric piece. The blocking part blocks one side of the conveyed plate. As the worm continues to rotate, the other eccentric piece rotates 180 degrees, pushing the connecting part and the pushing part to move. Then, the hydraulic cylinder on the corresponding side pushes the connecting part and the pushing part closer to the blocking part. At this time, the pushing part drives the other side of the plate, thereby blocking and limiting both sides of the plate. 3. Both the pushing unit and the linear grinding unit are located inside the compression section. The compression section is in a compressed state during shearing, forming a sealed environment to prevent the splashing of shearing waste. Attached Figure Description

[0017] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the external structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the shearing chamber of the present invention; Figure 3 For the present invention Figure 2 A magnified view of a section at point A in the middle; Figure 4 For the present invention Figure 2 A magnified view of a section at point B in the middle; Figure 5 This is a cross-sectional view of the expansion portion of the present invention; Figure 6 This is a schematic diagram of the mounting structure of the polishing wheel of the present invention.

[0019] In the diagram: 1. Base; 2. Sliding plate; 3. Fixing plate; 4. Shearing chamber; 5. Limiting groove; 6. Worm gear; 7. Transmission screw; 8. Pressure plate; 9. Blocking part; 10. Connecting part; 11. Pushing part; 12. Eccentric plate; 13. Hydraulic cylinder; 14. Slide groove; 15. Contact block; 16. Slider; 17. Telescopic part; 18. Spring; 19. Supporting cross plate; 20. Transmission plate; 21. Shearer; 22. Empty part; 23. Compression part; 24. Expansion part; 25. Push plate; 26. Finger cylinder; 27. Pushing part; 28. Abutting part; 32. Gear; 33. Mounting plate; 34. Drive part; 35. Arc groove; 36. Locking post; 37. Connecting rod; 38. Sleeve; 39. Polishing wheel. Detailed Implementation

[0020] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0021] Please see Figures 1-6 As shown, the present invention provides a cutting device for household appliance sheet metal, including a base 1 with a conveyor belt inside, a cutting chamber 4 located on the upper surface of the base 1 above the conveyor belt, a pressing and cutting assembly for cutting sheet metal is provided in the inner cavity of the cutting chamber 4, and a blocking adjustment unit for positioning sheet metal is provided inside the cutting chamber 4, and a pushing unit and a straight grinding unit are provided inside the pressing and cutting assembly. The pushing unit includes an expansion section 24 pushed by a first telescopic rod. The bottom of the expansion section 24 is provided with a pointed abutment section 28, and a finger cylinder 26 is provided in the empty slot inside the expansion section 24. The two driving ends of the finger cylinder 26 are connected to the pushing section 27 respectively. Push plates 25 pushed by the corresponding pushing section 27 are slidably installed on both sides of the expansion section 24. The linear grinding unit includes a grinding component that is pushed by a second telescopic rod and moves in the longitudinal direction. The grinding component includes two meshing gears 32. A sleeve 38 is fixed to the shaft end of each gear 32. A polishing wheel 39, driven by a drive motor, is rotatably mounted on the end of the sleeve 38 to grind the upper edge of the sheared sheet material. During the shearing of sheet metal, the sheet metal is automatically conveyed by a conveyor belt. When it enters the shearing chamber 4, the blocking adjustment unit blocks and limits the conveyed sheet metal to facilitate shearing. At this time, the pressing and shearing assembly moves downward to press and position the blocked and limited sheet metal, further improving the stability of shearing. After shearing, the shearer 21 in the pressing and shearing assembly rises and rotates to the other side, without affecting the use of the pushing unit and the linear grinding unit. Then the pushing unit moves downwards first, that is, the first telescopic rod pushes the expansion part 24 downwards, the abutting part 28 at the bottom of the expansion part 24 pushes the sheared plate first, and the finger cylinder 26 pushes the push plate 25 to act on the plate on the corresponding side, so that the plate moves from the shearing position to both sides of the blocking adjustment unit. Immediately afterwards, the grinding part in the linear grinding unit is pushed downward by the second telescopic rod and enters between the plates moving to both sides. Under the meshing of the gear 32, the position of the sleeve 38 is deflected, thereby changing the angle of the polishing wheels 39 on both sides. Due to the linear sliding in the longitudinal direction, the upper edge of the shearing position is linearly ground.

[0022] See Figure 2 and Figure 4As shown, the pressure shearing assembly includes a support plate 19 fixed to the inner wall of the shearing chamber 4 and a self-rotating worm gear 6. A worm wheel is meshed on the worm gear 6 and rotatably mounted on the top of the support plate 19. A transmission screw 7 is threadedly connected to the middle of the worm wheel. A transmission plate 20 is connected to the bottom end of the transmission screw 7. A lifting and rotating shear 21 is slidably mounted on the mounting seat at the bottom of the transmission plate 20. A pressure plate 8 is connected to the bottom surface of the transmission plate 20 through a telescopic rod. The rotation angle of the shear 21 is 180 degrees. The outer side of the shearer 21 is provided with a compression section 23 mounted on the bottom mounting seat of the transmission plate 20; the middle surface of the pressure plate 8 is provided with a gap 22 for the shearer 21, the expansion section 24 and the polishing wheel 39 to pass through. The bottom of the pressure plate 8 is elastic and is driven by the worm gear 6 to rotate the worm wheel. Since the worm wheel is threadedly connected to the transmission screw 7, it drives the transmission screw 7 to move linearly in the vertical direction. At this time, the transmission screw 7 drives the transmission plate 20 to descend, and the pressure plate 8 presses against the plate. As it continues to descend, the telescopic rod connected to the pressure plate 8 retracts, and the compression section 23 is in a compressed state. The shearer 21 passes through the gap 22 and shears the plate. After shearing, the shearer 21 rises and rotates 180 degrees to approach the compression section 23, which facilitates the subsequent sequential operation of the expansion section 24 and the polishing wheel 39.

[0023] See Figure 4 and Figure 6 As shown, the linear grinding unit also includes a drive unit 34 that is slidably mounted on a mounting base at the bottom of the transmission plate 20 and pushed by a second telescopic rod. The end of the drive unit 34 is connected to a mounting plate 33. The two sides of the mounting plate 33 are provided with arc-shaped grooves 35 that are at the same point as the center of the corresponding gear 32. A locking post 36 is slidably connected inside the arc-shaped groove 35. A connecting rod 37 is fixed to the end of the locking post 36. The connecting rod 37 is fixed to the outer side of the sleeve 38 on the corresponding side. When the expansion part 24 pushes the sheared sheet metal to both sides, the drive unit 34 is pushed downward by the second telescopic rod, which drives the mounting plate 33 downward synchronously. Under the meshing of the gear 32, the sleeve 38 on the corresponding side rotates in different directions. During this process, the connecting rod 37 connected to the sleeve 38 slides along the direction of the arc-shaped groove 35, increasing the stability of the sleeve 38 when rotating, thereby changing the position of the polishing wheel 39 connected to the end of the sleeve 38 to grind the edge of the sheet metal, making it an arc transition and improving the quality of the sheared sheet metal.

[0024] See Figure 2 and Figure 3As shown, the blocking adjustment unit includes two eccentric plates 12 that are slidably positioned on the end of the worm gear 6. The two eccentric plates 12 are spaced 180 degrees apart. Each eccentric plate 12 has a contact block 15 at its end. One contact block 15 has a stop portion 9 with an elastic bottom fixed at its end, and the other contact block 15 has a connecting portion 10 fixed at its end. An L-shaped pusher 11 is fixed at the end of the connecting portion 10. The bottom end of the pusher 11 is provided with an automatically resetting movable block. A limiting groove 5 for sliding of the pusher 11 is provided on one outer wall of the shearing chamber 4. The two inner walls of the shearing chamber 4 are provided with grooves 14, and a slider 16 is slidably installed inside each groove 14. A spring 18 is installed on the bottom surface of the slider 16, and a telescopic member 17 is provided on the side of the slider 16. One end of one telescopic member 17 is fixed to the blocking part 9, and one end of the other telescopic member 17 is fixed to the connecting part 10. When the blocking movement occurs on both sides, the slider 16 slides in the groove 14 and compresses the spring 18. When the spring 18 returns to its original shape, it returns to its original shape. When the pushing is performed, the telescopic members 17 on both sides are in an extended state. A hydraulic cylinder 13 is installed on the inner wall of the shearing chamber 4 above the slide 14. The pushing end of the hydraulic cylinder 13 is connected to a track block. The surface of the eccentric piece 12 is provided with a track groove that slides with the track block. The eccentric piece 12 slides along the key block on the worm gear 6. The rotation of the eccentric piece 12 is not affected by the cooperation between the track groove and the track block. When blocking the incoming sheet material, both eccentric pieces 12 are located on the key block in the worm gear 6. Since the two eccentric pieces 12 are spaced 180 degrees apart, when entering through the inlet of the shearing chamber 4, the connecting part 10 and the pushing part 11 are located directly above the conveyor belt and are in an open state, which facilitates the feeding of materials. When the worm gear 6 rotates, it drives the eccentric piece 12 to push against a contact block 15, thereby causing the blocking part 9 to move down. Then, the hydraulic cylinder 13 on one side pushes the corresponding eccentric piece 12 to slide in the worm gear 6 and leave the position of the key block, releasing the following transmission and flipping of the eccentric piece 12, and blocking one side of the conveyed plate material through the blocking part 9. As the worm gear 6 continues to rotate, another eccentric piece 12 rotates 180 degrees, pushing the connecting part 10 and the pusher 11 to move. Then, the hydraulic cylinder 13 on the corresponding side pushes the connecting part 10 and the pusher 11 closer to the blocking part 9. At this time, the pusher 11 drives the other side of the plate, thereby blocking and limiting both sides of the plate.

[0025] See Figure 1As shown, two outer sides of the base 1 are provided with fixed plates 3, and two inner sides of the base 1 above the conveyor belt are provided with sliding plates 2 pushed by synchronous cylinders. Each sliding plate 2 has a limit rod fixed on its outer side. The limit rod is slidably set with the corresponding fixed plate 3. The limit rod on the sliding plate 2 is pushed by the synchronous cylinder to slide in the fixed plate 3. Through the sliding of the sliding plate 2, the material is adapted to the bonding and feeding of the plate, so that it slides along a specific direction.

[0026] This invention provides a method of using a cutting device for household appliance sheet materials, the method comprising the following steps: Step 1: After the blocking part 9 in the blocking adjustment unit moves down, it slides horizontally, and the other connecting part 10 moves down to drive the pushing part 11 to initially position the sheet metal; Step 2: Next, the pressing and shearing assembly moves downward, pressing the sheet metal with the pressure plate 8, and shearing the sheet metal with the sliding shear 21. Then, the expansion part 24 in the pushing unit pushes the sheared sheet metal downward, and the push plate 25 pushes the sheet metal on both sides to move towards the blocking part 9 and the connecting part 10 respectively. Step 3: The linear grinding unit descends and slides, and under the meshing transmission of gear 32, it drives the polishing wheels 39 with inclined angles on both sides to grind the upper edge of the sheet material.

[0027] In use, this invention, by setting a blocking adjustment unit, ensures that when entering through the inlet of the shearing chamber 4, the connecting part 10 and the pushing member 11 are located directly above the conveyor belt and are in an open state, facilitating material feeding. When the worm gear 6 rotates, it drives the eccentric piece 12 to push against a contact block 15, thereby causing the blocking part 9 to move down. Then, the hydraulic cylinder 13 on one side pushes the corresponding eccentric piece 12 to slide in the worm gear 6 and leave the key block position, releasing the following transmission and flipping of the eccentric piece 12. The blocking part 9 blocks one side of the conveyed plate material. As the worm gear 6 continues to rotate, the other eccentric piece 12 rotates 180 degrees, pushing the connecting part 10 and the pushing member 11 to move. Then, the hydraulic cylinder 13 on the corresponding side pushes the connecting part 10 and the pushing member 11 closer to the blocking part 9. At this time, the pushing member 11 drives the other side of the plate material, thereby blocking and limiting both sides of the plate material. By setting up the cooperation of the pushing unit and the linear grinding unit, after the shearer 21 is working, the pushing unit moves downward first, that is, the first telescopic rod pushes the expansion part 24 downward, and the abutting part 28 at the bottom of the expansion part 24 first pushes the sheared plate material, and the finger cylinder 26 pushes the push plate 25 to act on the plate material on the corresponding side, so that the plate material moves from the shearing position to both sides of the blocking adjustment unit; then the grinding part in the linear grinding unit is pushed downward by the second telescopic rod and enters between the plates moving to both sides. Under the meshing of the gear 32, the position of the sleeve 38 is deflected, thereby changing the angle of the polishing wheels 39 on both sides. Due to the linear sliding in the longitudinal direction, the upper edge of the shearing position is linearly ground to grind the edge of the plate material, making it an arc transition and improving the quality of the sheared plate material; Both the pushing unit and the linear grinding unit are located inside the compression section 23. The compression section 23 is in a compressed state during shearing, forming a sealed environment to prevent the splashing of shearing waste.

[0028] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A shearing device for household appliance sheet metal, comprising a base (1) with an internal conveyor belt, wherein a shearing chamber (4) is provided on the upper surface of the base (1) above the conveyor belt, characterized in that: The inner cavity of the shearing chamber (4) is equipped with a pressing and shearing assembly for shearing the sheet metal, and the interior of the shearing chamber (4) is equipped with a blocking adjustment unit for positioning the sheet metal. The interior of the pressing and shearing assembly is equipped with a pushing unit and a straight grinding unit. The pushing unit includes an expansion section (24) that moves vertically upwards and downwards. The bottom of the expansion section (24) is provided with a pointed abutment section (28), and a finger cylinder (26) is provided in the empty groove inside the expansion section (24). The two driving ends of the finger cylinder (26) are connected to a pushing section (27). Push plates (25) pushed by the corresponding pushing sections (27) are slidably installed on both sides of the expansion section (24). The linear grinding unit includes a grinding component that moves in the longitudinal direction. The grinding component includes two meshing gears (32). A sleeve (38) is fixed to the shaft end of each gear (32). A polishing wheel (39) driven by a drive motor and used to grind the upper edge of the sheared sheet is rotatably mounted on the end of the sleeve (38).

2. The appliance sheet cutting device according to claim 1, characterized in that, The pressure shearing assembly includes a support plate (19) fixed to the inner wall of the shearing chamber (4) and a self-rotating worm gear (6). A worm wheel is meshed on the worm gear (6) and rotated on the top of the support plate (19). A transmission screw (7) is threadedly connected to the middle of the worm wheel. A transmission plate (20) is connected to the bottom end of the transmission screw (7). A lifting and rotating shear (21) is slidably provided on the mounting seat at the bottom of the transmission plate (20). A pressure plate (8) is connected to the bottom surface of the transmission plate (20) through a telescopic rod. The rotation angle of the shear (21) is 180 degrees.

3. The appliance sheet cutting device according to claim 2, characterized in that, The outer side of the shear (21) is provided with a compression part (23) mounted on the bottom mounting seat of the transmission plate (20); the middle surface of the pressure plate (8) is provided with a gap (22) for the shear (21), the expansion part (24) and the polishing wheel (39) to pass through.

4. The appliance sheet cutting device according to claim 3, characterized in that, The linear grinding unit also includes a drive unit (34) that is slidably mounted on the bottom of the transmission plate (20) and pushed by the second telescopic rod. The end of the drive unit (34) is connected to a mounting plate (33). The two sides of the mounting plate (33) are provided with arc-shaped grooves (35) that are at the same point as the center of the corresponding gear (32). The inside of the arc-shaped groove (35) is slidably connected to a locking post (36). The end of the locking post (36) is fixed with a connecting rod (37). The connecting rod (37) is fixed to the outer side of the sleeve (38) on the corresponding side.

5. The appliance sheet cutting device according to claim 4, characterized in that, The blocking adjustment unit includes two eccentric plates (12) that are slidably limited on the end of the worm (6). The two eccentric plates (12) are spaced 180 degrees apart. Each eccentric plate (12) has a contact block (15) at its end. One contact block (15) has a stop part (9) with elastic bottom fixed at its end. The other contact block (15) has a connecting part (10) fixed at its end. The connecting part (10) has an L-shaped pusher (11) fixed at its end. The bottom end of the pusher (11) has an automatic reset movable block. One outer wall of the shear chamber (4) is provided with a limiting groove (5) for sliding of the pusher (11).

6. The appliance sheet cutting device according to claim 5, characterized in that, The two inner walls of the shearing chamber (4) are provided with grooves (14), and each groove (14) is provided with a slider (16). The bottom surface of the slider (16) is equipped with a spring (18), and the side of the slider (16) is provided with a telescopic member (17). One end of one telescopic member (17) is fixed to the blocking part (9), and one end of the other telescopic member (17) is fixed to the connecting part (10).

7. The appliance sheet cutting device according to claim 6, characterized in that, A hydraulic cylinder (13) is installed on the inner wall of the shearing chamber (4) above the slide (14), and the pushing end of the hydraulic cylinder (13) is connected to a track block; The surface of the eccentric piece (12) is provided with a groove that slides with the track block, and the eccentric piece (12) slides along the key block on the worm (6).

8. The appliance sheet cutting device according to claim 7, characterized in that, The base (1) has two outer sides with fixed plates (3), and the base (1) has two inner sides above the conveyor belt with sliding plates (2) pushed by synchronous cylinders. Each sliding plate (2) has a limit rod fixed on its outer side, and the limit rod is slidably set with the corresponding fixed plate (3).

9. The method of using the appliance sheet cutting device according to claim 8, characterized in that, The usage method includes the following steps: Step 1: After the blocking part (9) in the blocking adjustment unit moves down, it slides horizontally, and the other connecting part (10) moves down to drive the pushing part (11) to initially position the plate. Step 2: Next, the pressing and shearing assembly moves downward, pressing the sheet material with the pressure plate (8), and shearing the sheet material with the sliding shear (21). Then, the expansion part (24) in the pushing unit pushes the sheared sheet material downward, and the push plate (25) pushes the sheet material on both sides towards the blocking part (9) and the connecting part (10) respectively. Step 3: The linear grinding unit descends and slides, and under the meshing transmission of the gear (32), it drives the polishing wheels (39) with inclined angles on both sides to grind the upper edge of the plate.

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