Sheet metal part continuous shearing equipment and process thereof

Abstract

The invention discloses sheet metal part continuous shearing equipment and a process thereof, and belongs to the technical field of sheet metal part shearing equipment.The sheet metal part continuous shearing equipment comprises a conveying frame used for conveying sheet metal parts, a shearing frame is fixedly installed on the conveying frame, a movable tool apron is installed on the shearing frame in a lifting mode, and a fixed tool apron is further fixedly installed on the shearing frame; a plate adjusting assembly for adjusting the position of the sheet metal part through rotation is arranged on the conveying frame, a movable pressing plate is installed on the outer side of the movable tool apron in an elastic lifting mode, a connecting frame is fixedly installed on the outer side of the movable tool apron, and the connecting frame is in sliding connection with a vertical plate on the movable pressing plate; and meanwhile, adsorption assemblies for adsorbing sheet metal parts are uniformly mounted on the movable pressing plate. According to the continuous shearing equipment for the sheet metal part and the process thereof, automatic position correction and positioning locking can be carried out on the sheet metal part, the shearing precision is ensured, meanwhile, synchronous cooling and lubricating can be carried out on a cutter, and the service life of the cutter is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of sheet metal shearing equipment, and in particular to a continuous sheet metal shearing equipment and its process. Background Art

[0002] The continuous sheet metal shearing equipment is one of the core equipment in the field of metal sheet processing, and is widely used in industries such as automobile manufacturing, household appliance production, building decoration and mechanical equipment.

[0003] The prior art (Chinese patent with publication number: CN216370408U, publication date: April 26, 2022) discloses an inclined blade shearing machine for improving shearing accuracy of precision sheet metal, including a machine base and a shearing table. Universal wheels are installed at the four corners of the bottom end of the machine base. A shearing table is arranged at the top end of the machine base. A housing is arranged at the top end of the shearing table. An inclined blade scissors is installed inside the housing. Shearing cylinders are arranged in a row at the top end of the housing. A backing plate is arranged below the inclined blade scissors. Moving grooves are arranged on both sides of the top end of the backing plate. Screws are movably connected inside the moving grooves. By setting a servo motor, a driving shaft, screws, threaded blocks and moving seats, after the operator places and clamps the sheet metal, the driving shaft of the servo motor drives the two screws to rotate synchronously, and the threaded blocks drive the moving seats to move forward in the moving grooves, realizing automatic feeding, without the operator constantly holding the sheet metal and feeding it forward, solving the problem of low shearing efficiency; The prior art (Chinese patent with publication number: CN216138215U, publication date: March 29, 2022) discloses a sheet metal processing equipment for solar water heaters, including a support table and a shearing end. Support column groups are fixedly connected to the four corners of the bottom end of the shearing end. The bottom ends of the four support column groups are fixedly connected to the top end of the support table. A shearing table is embedded on one side of the top end of the support table. The shearing table is composed of a working base, trapezoidal sliding columns, limiting plates, an adjusting mechanism and an anti-warping structure. There are four trapezoidal sliding columns. There are two limiting plates and adjusting mechanisms respectively. The distance between the anti-warping structure and the upper surface of the working base can be adjusted to adapt to shearing materials of different thicknesses, improving the practicability of the device. When adjusting the distance between the anti-warping structure and the upper surface of the working base, only need to turn the two connecting rods to drive the anti-warping structure to move up and down, then the distance between the anti-warping structure and the upper surface of the working base can be changed, which is convenient for adjustment and improves work efficiency; Most of the existing continuous sheet metal shearing equipment uses a single downward pressure to position the sheet metal during use, and only uses the frictional force to prevent the sheet metal from lateral offset. The limiting effect is limited, so it is easy to reduce the shearing accuracy, and there are certain usage defects. Summary of the Invention

[0004] The purpose of the present invention is to provide a continuous shearing device and process for sheet metal parts, so as to solve the problem in the above-mentioned background technology that most of the current continuous shearing devices for sheet metal parts on the market use a single downward pressure to position the sheet metal parts, and only rely on the frictional force to prevent the sheet metal parts from lateral displacement. The limiting effect is ineffective, thus easily reducing the shearing accuracy.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A continuous shearing device for sheet metal parts, including a conveying frame for conveying sheet metal parts, a shearing frame is fixedly installed on the conveying frame, a movable tool holder is installed on the shearing frame in a lifting manner, and a fixed tool holder is also fixedly installed on the shearing frame; A plate adjusting component for adjusting the position of the sheet metal part by rotation is arranged on the conveying frame. An active pressing plate is elastically lifted and installed on the outer side of the movable tool holder. A connecting frame is fixedly installed on the outer side of the movable tool holder. The connecting frame is slidably connected with the vertical plate on the active pressing plate. At the same time, an adsorption component for adsorbing the sheet metal part is evenly installed on the active pressing plate. An oil conveying component for conveying lubricating oil liquid is arranged between the movable tool holder and the active pressing plate. A swing type nozzle component for spraying and cooling the lubricating oil is also installed on the active pressing plate.

[0006] Preferably, a hydraulic cylinder is fixedly installed on the top of the shearing frame, the output end of the hydraulic cylinder is fixedly connected with the movable tool holder, both ends of the movable tool holder are slidably connected with the shearing frame in a lifting manner, and during the downward movement of the movable tool holder, it cooperates with the fixed tool holder to shear the sheet metal part.

[0007] Preferably, the plate adjusting component includes adjusting plates symmetrically and elastically rotatably installed above the conveying frame. A first pulling rope is wound around the outer side of the shaft part of the adjusting plate. The upper end of the first pulling rope is fixedly connected to the outer side of the movable tool holder. During the downward movement of the movable tool holder, the adjusting plate is elastically rotated by pulling the first pulling rope.

[0008] Preferably, one end of the adjusting plate close to the sheet metal part is elastically rotatably connected with a movable plate. A positioning wheel is rotatably installed at one end of the movable plate close to the sheet metal part. During the rotation of the adjusting plate, the movable plate and the positioning wheel are driven to rotate synchronously. At the same time, the two positioning wheels are attached to the outer side of the sheet metal part to automatically adjust the position of the sheet metal part.

[0009] Preferably, the lower end of the active pressing plate is lower than the lower end of the movable tool holder. A guide rod is fixedly installed on the upper surface of the active pressing plate. The guide rod slidably penetrates through the movable tool holder. A first spring is connected between the movable tool holder and the active pressing plate. During the downward movement of the movable tool holder, the active pressing plate is attached and pressed against the upper surface of the sheet metal part.

[0010] Preferably, the adsorption assembly includes adsorbing members fixedly installed through the movable pressure plate evenly, with a pull rod elastically installed through the upper end of the adsorbing member. The upper end of the pull rod is fixedly connected to an adapter plate, and the upper end of the adapter plate is fixedly connected to a second pull rope. Moreover, the upper end of the second pull rope is fixedly connected to the outside of the connection frame. During the continuous downward movement of the movable tool holder driving the connection frame, the second pull rope pulls the pull rod to move upward elastically.

[0011] Preferably, the adsorption assembly further includes a piston piece fixedly installed at the lower end of the pull rod. A second spring is fixedly connected between the piston piece and the inner wall of the upper end of the adsorbing member, and the lower end of the adsorbing member is hermetically attached to the outer wall of the sheet metal part.

[0012] Preferably, the oil delivery assembly includes oil bags fixedly connected to the outside of the movable tool holder and the movable pressure plate at the upper and lower ends respectively. The outside of the oil bags is respectively connected with an oil suction pipe and an oil discharge pipe. A filter box is also fixedly installed on the shearing frame. At the same time, the lower end of the oil suction pipe communicates with the filter box, and one-way valve structures are arranged on both the oil suction pipe and the oil discharge pipe. During the stretching process of the oil bag, the filtered oil liquid in the filter box is extracted through the oil suction pipe, and during the compression process of the oil bag, the oil liquid is discharged through the oil discharge pipe.

[0013] Preferably, the swing type nozzle assembly includes a nozzle elastically rotatably installed above the movable pressure plate. The nozzle communicates with the oil discharge pipe. A gear is fixedly installed on the outer side of the shaft part of the nozzle. At the same time, a rack is also fixedly installed on the movable tool holder. When the movable tool holder and the movable pressure plate move relative to each other, the gear and the rack are meshed and connected. A guide post is fixedly installed below the nozzle, and a baffle is slidably installed through the outside of the guide post. A third spring is fixedly connected between the baffle and the nozzle. During the rotation of the nozzle, the baffle slides elastically under the resistance of the movable pressure plate, realizing the gradual closing of the nozzle orifice of the nozzle.

[0014] A shearing process of a sheet metal continuous shearing device mainly includes the following steps: S1. Place the sheet metal part to be processed on the conveying frame for conveying. When the sheet metal part is conveyed to the shearing position, stop the conveying, control the movable tool holder to move downward. At this time, the adjusting plate rotates synchronously, driving the positioning wheel to correct and adjust the position of the sheet metal part; S2. When the movable tool holder continues to move downward, the movable pressure plate compresses the shearing end of the sheet metal part, and at the same time, the adsorbing member adsorbs the sheet metal part synchronously. The movable tool holder cooperates with the fixed tool holder to shear the sheet metal part; S3. When the movable tool holder moves downward, it will squeeze the oil bag, so that the lubricating and cooling oil liquid is evenly sprayed onto the tool at the lower end of the movable tool holder through the swinging nozzle, realizing cooling and lubrication.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The sheet metal continuous shearing equipment and its process can automatically correct the position and lock the position of the sheet metal, ensuring the shearing accuracy. At the same time, it can synchronously cool and lubricate the cutting tool, extending the service life of the cutting tool. The specific content is as follows; 1. An adjusting plate, a first pulling rope, a movable plate and a positioning wheel are provided. As the movable tool holder moves downward, it can pull the adjusting plate to rotate elastically through the first pulling rope, so that the adjusting plate drives the positioning wheel to fit against the side wall of the sheet metal, thereby pushing the sheet metal for position adjustment to ensure that the sheet metal is located at the center position of the conveying rack; 2. A movable pressing plate and a suction attachment are provided. As the movable tool holder moves downward, the movable pressing plate first contacts the sheet metal to realize pressing and positioning of the sheet metal. As the movable tool holder continues to move downward, the connecting frame will pull the piston piece to move upward in the suction attachment through the second pulling rope, so that the suction attachment can perform negative pressure adsorption on the sheet metal, ensuring the horizontal stability of the sheet metal and further improving the shearing accuracy; 3. An oil bag and a nozzle are provided. As the movable tool holder moves downward, when the movable tool holder and the movable pressing plate move relative to each other, the oil bag can be squeezed, so that the lubricating and cooling oil liquid inhaled in the oil bag is sprayed onto the cutting tool through the nozzle to realize lubrication and cooling of the cutting tool. As the movable tool holder moves downward, it will synchronously drive the nozzle to rotate and swing to ensure uniform spraying. During the rotation of the nozzle, the aperture will be automatically adjusted, so that the oil impact force received by the cutting tool is maintained at a certain level, so as to ensure that the waste chips at the shearing part of the cutting tool and the sheet metal can be effectively washed away. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the front view structural schematic diagram of the present invention; Figure 2 is the installation structural schematic diagram of the movable tool holder and the fixed tool holder of the present invention; Figure 3 is the installation structural schematic diagram of the movable pressing plate of the present invention; Figure 4 is the connection structural schematic diagram of the movable tool holder and the movable pressing plate of the present invention; Figure 5 is the sectional structural schematic diagram of the suction attachment of the present invention; Figure 6 is the side view structural schematic diagram of the movable tool holder and the fixed tool holder of the present invention; Figure 7 is of the present invention Figure 6 the enlarged structural schematic diagram at A in; Figure 8 is the connection structural schematic diagram of the oil bag and the nozzle of the present invention.

[0017] In the figure: 1, conveying frame; 2, shearing frame; 3, hydraulic cylinder; 4, movable tool rest; 5, fixed tool rest; 6, adjusting plate; 7, first pulling rope; 8, movable plate; 9, positioning wheel; 10, movable pressing plate; 11, guide rod; 12, first spring; 13, connecting frame; 14, adsorbing part; 15, pull rod; 16, connecting plate; 17, second pulling rope; 18, piston piece; 19, second spring; 20, oil bladder; 21, nozzle; 22, gear; 23, rack; 24, oil suction pipe; 25, oil discharge pipe; 26, guide post; 27, baffle plate; 28, third spring; 29, filter box. Detailed implementation manner

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] Embodiment 1: In the shearing process of the existing continuous shearing equipment for sheet metal parts, it is inconvenient to lock the sheet metal parts in a convenient and multi-way manner to ensure the shearing accuracy. To solve this technical problem, the following technical content is disclosed in this embodiment. Please refer to Figures 1-5As shown in the figure; a continuous shearing device and process for sheet metal parts, including a conveying rack 1 for conveying sheet metal parts, a shearing rack 2 is fixedly installed on the conveying rack 1, and a movable tool holder 4 is installed on the shearing rack 2 in a lifting manner, and a fixed tool holder 5 is also fixedly installed on the shearing rack 2; a plate adjusting assembly for adjusting the position of the sheet metal part by rotation is arranged on the conveying rack 1, a movable pressing plate 10 is elastically lifted and installed on the outer side of the movable tool holder 4, and a connecting frame 13 is fixedly installed on the outer side of the movable tool holder 4, and the connecting frame 13 is slidably connected with the vertical plate on the movable pressing plate 10. At the same time, an adsorption assembly for adsorbing the sheet metal part is evenly installed on the movable pressing plate 10. A hydraulic cylinder 3 is fixedly installed on the top of the shearing rack 2, and the output end of the hydraulic cylinder 3 is fixedly connected with the movable tool holder 4. The two ends of the movable tool holder 4 are slidably connected with the shearing rack 2 in a lifting manner. At the same time, during the downward movement of the movable tool holder 4, it cooperates with the fixed tool holder 5 to shear the sheet metal part. The plate adjusting assembly includes adjusting plates 6 symmetrically and elastically rotatably installed above the conveying rack 1. A first pulling rope 7 is wound around the outer side of the shaft part of the adjusting plate 6, and the upper end of the first pulling rope 7 is fixedly connected to the outer side of the movable tool holder 4. At the same time, during the downward movement of the movable tool holder 4, the adjusting plate 6 is elastically rotated by pulling the first pulling rope 7. One end of the adjusting plate 6 close to the sheet metal part is elastically rotatably connected with a movable plate 8, and a positioning wheel 9 is rotatably installed at one end of the movable plate 8 close to the sheet metal part. During the rotation of the adjusting plate 6, the movable plate 8 and the positioning wheel 9 are driven to rotate synchronously. At the same time, the two positioning wheels 9 are attached to the outer side of the sheet metal part to realize automatic adjustment of the position of the sheet metal part. The lower end of the movable pressing plate 10 is lower than the lower end of the movable tool holder 4, and a guide rod 11 is fixedly installed on the upper surface of the movable pressing plate 10. The guide rod 11 slidably penetrates through the movable tool holder 4. At the same time, a first spring 12 is connected between the movable tool holder 4 and the movable pressing plate 10. Moreover, during the downward movement of the movable tool holder 4, the movable pressing plate 10 is attached and pressed against the upper surface of the sheet metal part. The adsorption assembly includes suction accessories 14 uniformly and fixedly installed through the movable pressing plate 10. A pull rod 15 is elastically lifted and installed through the upper end of the suction accessory 14. The upper end of the pull rod 15 is fixedly connected with a connecting plate 16. At the same time, the upper end of the connecting plate 16 is fixedly connected with a second pulling rope 17. Moreover, the upper end of the second pulling rope 17 is fixedly connected to the outer side of the connecting frame 13. During the continuous downward movement of the movable tool holder 4 driving the connecting frame 13, the second pulling rope 17 pulls the pull rod 15 to elastically move upward. The adsorption assembly also includes a piston piece 18 fixedly installed at the lower end of the pull rod 15, and a second spring 19 is fixedly connected between the piston piece 18 and the inner wall of the upper end of the suction accessory 14. The lower end of the suction accessory 14 is hermetically attached to the outer wall of the sheet metal part.

[0020] Place the sheet metal parts to be processed on the conveyor rack 1 for conveying. When the sheet metal parts are conveyed to the shearing position, control the hydraulic cylinder 3 to push the movable tool holder 4 downward. At this time, the movable pressing plate 10 will pull the adjusting plate 6 to rotate through the first pull rope 7, so that the adjusting plate 6 drives the movable plate 8 and the positioning wheel 9 to move synchronously. When the positioning wheel 9 fits against the side wall of the sheet metal part, push the sheet metal part to adjust its position to ensure that the sheet metal part is at the middle position of the conveyor rack 1. As the movable tool holder 4 continues to move downward, the movable pressing plate 10 will first contact the sheet metal part to press it. At the same time, the suction attachment 14 will be hermetically attached to the outer wall of the sheet metal part. When the movable tool holder 4 continues to move downward, it will drive the connecting frame 13 to move downward synchronously. At this time, the movable tool holder 4 and the movable pressing plate 10 will move relatively, so that the connecting frame 13 on the movable tool holder 4 pulls the connecting plate 16 through the second pull rope 17, so that the connecting plate 16 pulls the piston piece 18 inside the suction attachment 14 upward through the pull rod 15. At this time, the connecting frame 13 can automatically adsorb the sheet metal part, further improving the positioning stability of the sheet metal part during shearing and ensuring the subsequent shearing accuracy.

[0021] Embodiment 2: The technical content disclosed in this embodiment is a further improvement based on the above Embodiment 1. For the existing continuous shearing equipment for sheet metal parts, in order to further solve this technical problem, the following technical content is disclosed in this embodiment, as Figures 6-8 shown; An oil delivery component for delivering lubricating oil is provided between the movable tool holder 4 and the movable pressing plate 10, and a swing type nozzle component for spraying and cooling the lubricating oil is also installed on the movable pressing plate 10. The oil delivery component includes an oil bag 20 fixedly connected to the outer sides of the upper and lower ends of the movable tool holder 4 and the movable pressing plate 10 respectively. The outer sides of the oil bag 20 are respectively connected with an oil suction pipe 24 and an oil discharge pipe 25. A filter box 29 is fixedly installed on the shearing frame 2. At the same time, the lower end of the oil suction pipe 24 is communicated with the filter box 29. One-way valve structures are provided on both the oil suction pipe 24 and the oil discharge pipe 25. During the stretching process of the oil bag 20, the filtered oil in the filter box 29 is extracted through the oil suction pipe 24, and during the compression process of the oil bag 20, the oil is discharged through the oil discharge pipe 25. The swing type nozzle component includes a nozzle 21 elastically rotatably installed above the movable pressing plate 10. The nozzle 21 is communicated with the oil discharge pipe 25. A gear 22 is fixedly installed on the outer side of the shaft part of the nozzle 21. At the same time, a rack 23 is fixedly installed on the movable tool holder 4. When the movable tool holder 4 and the movable pressing plate 10 move relatively, the gear 22 and the rack 23 are meshed and connected. A guide post 26 is fixedly installed below the nozzle 21. A baffle 27 is slidably installed through the outer side of the guide post 26. A third spring 28 is fixedly connected between the baffle 27 and the nozzle 21. During the rotation of the nozzle 21, the baffle 27 elastically slides under the resistance of the movable pressing plate 10 to gradually close the nozzle of the nozzle 21.

[0022] With the relative movement of the movable tool holder 4 and the movable pressure plate 10, the two can squeeze the oil bag 20, so that the lubricating and cooling oil in the oil bag 20 enters the nozzle 21 through the drain pipe 25, so that the oil is sprayed to the outside of the tool through the nozzle 21, realizing the cooling and lubrication of the tool. At the same time, with the downward movement of the movable tool holder 4, the gear 22 and the rack 23 will be meshed and connected, so as to drive the nozzle 21 to rotate elastically, making the nozzle 21 spray in a swinging manner, thus further improving the effect of the oil on the tool. With the rotation of the nozzle 21, the baffle 27 on its outer side will slide elastically along the guide post 26 when contacting the movable pressure plate 10, so that the baffle 27 can gradually block the nozzle of the nozzle 21, making the aperture of the nozzle 21 gradually decrease, so as to automatically adjust the aperture of the nozzle 21 during the swinging process, ensuring that the impact force of the oil on the tool and the shearing end of the sheet metal part remains at a certain level, ensuring that the waste chips generated by shearing can be fully washed off. The dripping oil passes through the filter of the filter box 29 and then enters the oil bag 20 through the suction pipe 24 again to realize circulating cooling.

[0023] The content not described in detail in this specification belongs to the prior art well known to those skilled in the art.

[0024] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A continuous shearing device for sheet metal parts, including a conveying rack (1) for conveying sheet metal parts. A shearing rack (2) is fixedly installed on the conveying rack (1), and a movable tool holder (4) is installed on the shearing rack (2) in a lifting manner. Moreover, a fixed tool holder (5) is also fixedly installed on the shearing rack (2); It is characterized in that A plate adjusting assembly for rotating and adjusting the position of the sheet metal part is arranged on the conveying rack (1). A movable pressing plate (10) is elastically installed on the outer side of the movable tool holder (4) in a lifting manner. A connecting frame (13) is fixedly installed on the outer side of the movable tool holder (4). The connecting frame (13) is slidably connected to the vertical plate on the movable pressing plate (10). Meanwhile, an adsorption assembly for adsorbing the sheet metal part is evenly installed on the movable pressing plate (10). An oil conveying assembly for conveying lubricating oil is arranged between the movable tool holder (4) and the movable pressing plate (10). Moreover, a swing type spray head assembly for spraying and cooling the lubricating oil is installed on the movable pressing plate (10).

2. The continuous shearing device for sheet metal parts according to claim 1, wherein: A hydraulic cylinder (3) is fixedly installed on the top of the shearing rack (2). The output end of the hydraulic cylinder (3) is fixedly connected to the movable tool holder (4). The two ends of the movable tool holder (4) are slidably connected to the shearing rack (2) in a lifting manner. Meanwhile, during the downward movement of the movable tool holder (4), it cooperates with the fixed tool holder (5) to shear the sheet metal part.

3. A continuous shearing device for sheet metal parts according to claim 1, characterized in that: The plate adjusting assembly includes adjusting plates (6) symmetrically and elastically rotatably installed above the conveying rack (1). A first pulling rope (7) is wound around the outer side of the shaft part of the adjusting plate (6). The upper end of the first pulling rope (7) is fixedly connected to the outer side of the movable tool holder (4). Meanwhile, during the downward movement of the movable tool holder (4), the adjusting plate (6) is elastically rotated by pulling the first pulling rope (7).

4. A continuous shearing device for sheet metal parts according to claim 3, characterized in that: One end of the adjusting plate (6) close to the sheet metal part is elastically rotatably connected to a movable plate (8). A positioning wheel (9) is rotatably installed at one end of the movable plate (8) close to the sheet metal part. During the rotation of the adjusting plate (6), the movable plate (8) and the positioning wheel (9) are driven to rotate synchronously. Meanwhile, the two positioning wheels (9) are attached to the outer side of the sheet metal part to realize automatic adjustment of the position of the sheet metal part.

5. A continuous shearing device for sheet metal parts according to claim 1, characterized in that: The lower end of the movable pressing plate (10) is lower than the lower end of the movable tool holder (4). A guide rod (11) is fixedly installed on the upper surface of the movable pressing plate (10). The guide rod (11) slidably penetrates through the movable tool holder (4). A first spring (12) is connected between the movable tool holder (4) and the movable pressing plate (10). Moreover, during the downward movement of the movable tool holder (4), the movable pressing plate (10) is attached and pressed against the upper surface of the sheet metal part.

6. The continuous shearing device for sheet metal parts according to claim 1, wherein: The adsorption assembly includes adsorbing members (14) uniformly and fixedly installed through the movable pressing plate (10). A pull rod (15) is elastically installed through the upper end of the adsorbing member (14). The upper end of the pull rod (15) is fixedly connected to a connecting plate (16). The upper end of the connecting plate (16) is fixedly connected to a second pulling rope (17). Moreover, the upper end of the second pulling rope (17) is fixedly connected to the outer side of the connecting frame (13). During the continuous downward movement of the movable tool holder (4) driving the connecting frame (13), the second pulling rope (17) pulls the pull rod (15) to elastically move upward.

7. A continuous shearing device for sheet metal parts according to claim 6, characterized in that: The adsorption assembly further includes a piston sheet (18) fixedly installed at the lower end of the pull rod (15), and a second spring (19) is fixedly connected between the piston sheet (18) and the inner wall of the upper end of the adsorbent (14). Moreover, the lower end of the adsorbent (14) is hermetically attached to the outer wall of the sheet metal part.

8. A continuous shearing device for sheet metal parts according to claim 1, characterized in that: The oil delivery assembly includes an oil bag (20) fixedly connected to the outer sides of the movable tool holder (4) and the movable pressure plate (10) at the upper and lower ends respectively. The outer sides of the oil bag (20) are respectively connected with an oil suction pipe (24) and an oil discharge pipe (25). A filter box (29) is also fixedly installed on the shearing frame (2). Meanwhile, the lower end of the oil suction pipe (24) is communicated with the filter box (29). One-way valve structures are arranged on both the oil suction pipe (24) and the oil discharge pipe (25). During the stretching process of the oil bag (20), the filtered oil liquid in the filter box (29) is extracted through the oil suction pipe (24), and during the compression process of the oil bag (20), the oil liquid is discharged through the oil discharge pipe (25).

9. A continuous shearing device for sheet metal parts according to claim 8, characterized in that: The swing type spray head assembly includes a spray head (21) elastically rotatably installed above the movable pressure plate (10). The spray head (21) is communicated with the oil discharge pipe (25). A gear (22) is fixedly installed on the outer side of the shaft part of the spray head (21). A rack (23) is also fixedly installed on the movable tool holder (4). When the movable tool holder (4) and the movable pressure plate (10) move relative to each other, the gear (22) is meshed with the rack (23). A guide post (26) is fixedly installed below the spray head (21). A baffle plate (27) is slidably installed through the outer side of the guide post (26). A third spring (28) is fixedly connected between the baffle plate (27) and the spray head (21). During the rotation of the spray head (21), the baffle plate (27) elastically slides under the resistance of the movable pressure plate (10) to gradually close the nozzle of the spray head (21).

10. A continuous shearing device for sheet metal parts according to claim 1, characterized in that, The shearing process of the shearing device is also disclosed, and the specific method steps are as follows: S1. Place the sheet metal part to be processed on the conveying frame (1) for conveying. When the sheet metal part is conveyed to the shearing position, stop the conveying, and control the movable tool holder (4) to move downward. At this time, the adjusting plate (6) rotates synchronously to drive the positioning wheel (9) to correct and adjust the position of the sheet metal part. S2. When the movable tool holder (4) continues to move downward, the movable pressure plate (10) presses the shearing end of the sheet metal part, and at the same time, the adsorbent (14) adsorbs the sheet metal part synchronously. The movable tool holder (4) cooperates with the fixed tool holder (5) to shear the sheet metal part. S3. When the movable tool holder (4) moves downward, it will squeeze the oil bag (20), so that the lubricating and cooling oil liquid is evenly sprayed onto the tool at the lower end of the movable tool holder (4) through the swinging spray head (21) to achieve temperature reduction and lubrication.

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