Sheet metal part continuous shearing device and process thereof

Abstract

The application discloses a sheet metal part continuous shearing equipment and a process thereof, and belongs to the technical field of sheet metal part shearing equipment. The application comprises a conveying frame for conveying sheet metal parts. A shearing frame is fixedly installed on the conveying frame. A movable knife holder is installed on the shearing frame in a lifting mode. A fixed knife holder is also fixedly installed on the shearing frame. An adjusting plate assembly for adjusting the position of the sheet metal parts by rotating is arranged on the conveying frame. An elastic movable pressing plate is installed on the outer side of the movable knife holder in a lifting mode. A connecting frame is fixedly installed on the outer side of the movable knife holder. The connecting frame and the movable pressing plate are connected in a sliding mode. The movable pressing plate is also uniformly provided with adsorption assemblies for adsorbing the sheet metal parts. The sheet metal part continuous shearing equipment and the process thereof can automatically correct and position the sheet metal parts, ensure the shearing precision, and simultaneously cool and lubricate the cutting tools, thereby prolonging the service life of the cutting tools.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sheet metal part shearing equipment, in particular to a sheet metal part continuous shearing equipment and process thereof. BACKGROUND

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

[0003] The prior art (Chinese patent with publication number CN216370408U and publication date April 26, 2022) discloses a precision sheet metal with improved shearing precision oblique blade plate shearing machine, including a base and a shearing table, four corners of the bottom end of the base are installed with universal wheels, the top end of the base is provided with a shearing table, the top end of the shearing table is provided with a shell, the inside of the shell is installed with an oblique blade shear, the top end of the shell is arranged with a shearing cylinder, the lower side of the oblique blade shear is provided with a backing plate, the two sides of the top end of the backing plate are provided with a moving groove, the inside of the moving groove is movably connected with a screw rod. The oblique blade plate shearing machine with improved shearing precision of the precision sheet metal is provided with a servo motor, a driving shaft, a screw rod, a threaded block and a moving seat. After the operator places and clamps and fixes the sheet metal part, the driving shaft of the servo motor drives the two groups of screw rods to rotate synchronously, the threaded block drives the moving seat to be embedded in the inside of the moving groove and to be pushed forward to realize automatic feeding. The operator does not need to continuously hold the sheet metal part to feed forward, and the problem of low shearing efficiency is solved.

[0004] The prior art (Chinese patent with publication number CN216138215U and publication date March 29, 2022) discloses a sheet metal part machining equipment for solar water heater, including a support table and a shearing end, four corners of the bottom end of the shearing end are fixedly connected with support column groups, the bottom ends of the four support column groups are fixedly connected to the top end of the support table, one side of the top end of the support table is embedded with a shearing table, the shearing table is composed of a working base, a trapezoidal slide column, a limiting plate, an adjusting mechanism and an anti-upwarping structure, there are four trapezoidal slide columns, there are two limiting plates and two adjusting mechanisms, the spacing between the anti-upwarping structure and the upper surface of the working base can be adjusted to adapt to shearing materials of different thicknesses, improve the practicality of the device, when adjusting the spacing between the anti-upwarping structure and the upper surface of the working base, only need to twist two connecting rods to drive the anti-upwarping structure to move up and down, which can change the spacing between the anti-upwarping structure and the upper surface of the working base, facilitate adjustment and improve work efficiency.

[0005] The existing sheet metal part continuous shearing equipment mostly uses single downward pressing to realize positioning of the sheet metal part during use, only uses friction force to avoid lateral deviation of the sheet metal part, and the limiting effect is effective, which can easily reduce the shearing precision and has certain use defects. SUMMARY

[0006] The present application aims to provide a sheet metal part continuous shearing equipment and process to solve the above background problems that the current market sheet metal part continuous shearing equipment mostly uses single down pressure to realize the positioning of the sheet metal part, only uses friction to avoid the lateral deviation of the sheet metal part, and the limiting effect is effective, thereby reducing the shearing precision.

[0007] To achieve the above object, the present application provides the following technical scheme: a sheet metal part continuous shearing equipment, comprising a conveying frame for conveying sheet metal parts, a shearing frame fixedly installed on the conveying frame, a movable knife holder liftable and lowerable installed on the shearing frame, and a fixed knife holder fixedly installed on the shearing frame.

[0008] A regulating plate assembly for regulating the position of the sheet metal part is arranged on the conveying frame, an elastic movable pressing plate is installed on the outer side of the movable knife holder, a connecting frame is fixedly installed on the outer side of the movable knife holder, the vertical plates on the connecting frame and the movable pressing plate are slidably connected, the movable pressing plate is also uniformly provided with an adsorption assembly for adsorbing the sheet metal part, an oil conveying assembly for conveying lubricating oil is arranged between the movable knife holder and the movable pressing plate, and a swing type spray head assembly for spraying and cooling the lubricating oil is installed on the movable pressing plate.

[0009] 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 knife holder, the two ends of the movable knife holder are slidably connected with the shearing frame, and the sheet metal part is sheared by the movable knife holder and the fixed knife holder during the downward movement of the movable knife holder.

[0010] Preferably, the regulating plate assembly comprises a regulating plate symmetrically and elastically rotatably installed above the conveying frame, a first pull rope is wound around the outer side of the shaft of the regulating plate, the upper end of the first pull rope is fixedly connected with the outer side of the movable knife holder, and the regulating plate is elastically rotated by the first pull rope during the downward movement of the movable knife holder.

[0011] Preferably, an active plate is elastically rotatably connected to one end of the regulating plate close to the sheet metal part, a positioning wheel is rotatably installed on one end of the active plate close to the sheet metal part, and the active plate and the positioning wheel are synchronously rotated during the rotation of the regulating plate, and the two positioning wheels are attached to the outer side of the sheet metal part to automatically regulate the position of the sheet metal part.

[0012] Preferably, the lower end of the movable pressing plate is lower than the lower end of the movable knife holder, a guide rod is fixedly installed on the upper surface of the movable pressing plate, the guide rod slidably penetrates the movable knife holder, a first spring is connected between the movable knife holder and the movable pressing plate, and the movable pressing plate is attached and pressed to the upper surface of the sheet metal part during the downward movement of the movable knife holder.

[0013] Preferably, the adsorption assembly comprises an adsorption component fixedly installed on the movable pressing plate, and the upper end of the adsorption component penetrates through and is elastically and vertically installed with a pull rod, and the upper end of the pull rod is fixedly connected with a connecting plate, and the upper end of the connecting plate is fixedly connected with a second pull rope, and the upper end of the second pull rope is fixedly connected with the outer side of the connecting frame, and the second pull rope pulls the pull rod to elastically move upward during the continuous downward movement of the movable knife seat and the connecting frame.

[0014] Preferably, the adsorption assembly further comprises a piston sheet fixedly installed at the lower end of the pull rod, and a second spring is fixedly connected between the upper end of the adsorption component and the inner wall of the piston sheet, and the lower end of the adsorption component is sealingly attached to the outer wall of the metal plate.

[0015] Preferably, the oil conveying assembly comprises an oil bag fixedly connected with the outer side of the movable knife seat and the movable pressing plate, respectively, and the outer side of the oil bag is connected with an oil suction pipe and an oil discharge pipe, respectively, and a filter box is further fixedly installed on the shearing frame, and the lower end of the oil suction pipe is in communication with the filter box, and a one-way valve structure is arranged on the oil suction pipe and the oil discharge pipe, and filtered oil in the filter box is drawn through the oil suction pipe during the stretching of the oil bag, and the oil is discharged through the oil discharge pipe during the compression of the oil bag.

[0016] Preferably, the swing type nozzle assembly comprises a nozzle elastically and rotatably installed above the movable pressing plate, and the nozzle is in communication with the oil discharge pipe, and a gear is fixedly installed on the outer side of the shaft of the nozzle, and a rack is further fixedly installed on the movable knife seat, and the gear and the rack are engaged and connected when the movable knife seat and the movable pressing plate move relative to each other, and a guide column is fixedly installed below the nozzle, and a baffle is slidably installed through the outer side of the guide column, and a third spring is fixedly connected between the baffle and the nozzle, and the baffle elastically slides under the resistance of the movable pressing plate during the rotation of the nozzle, thereby gradually closing the nozzle opening.

[0017] A shearing process of a metal plate continuous shearing device mainly comprises the following steps:

[0018] S1, placing the metal plate to be processed on the conveying frame for conveying, stopping the conveying when the metal plate is conveyed to the shearing position, controlling the movable knife seat to move downward, and at the same time, the adjusting plate rotates synchronously to drive the positioning wheel to correct and adjust the position of the metal plate;

[0019] S2, when the movable knife seat continues to move downward, the movable pressing plate presses the shearing end of the metal plate, and at the same time, the adsorption component synchronously adsorbs the metal plate, and the movable knife seat cooperates with the fixed knife seat to shear the metal plate;

[0020] S3, when the movable knife seat moves downward, the oil bag is squeezed, so that the lubricating and cooling oil is uniformly sprayed to the cutter at the lower end of the movable knife seat through the swing nozzle, thereby achieving cooling and lubrication.

[0021] Compared with the prior art, the beneficial effects of the metal plate continuous shearing equipment and process are that the metal plate continuous shearing equipment and process can automatically correct and position lock the metal plate, ensure the shearing precision, and simultaneously cool and lubricate the cutter, prolong the service life of the cutter, and the specific contents are as follows.

[0022] 1. The adjusting plate, the first pull rope, the movable plate and the positioning wheel are arranged, with the downward movement of the movable cutter holder, the adjusting plate can be elastically rotated by the first pull rope to make the positioning wheel adhere to the side wall of the metal plate, so that the metal plate is pushed to adjust the position and ensure that the metal plate is located at the center position of the conveying frame;

[0023] 2. The movable pressing plate and the suction accessory are arranged, with the downward movement of the movable cutter holder, the movable pressing plate first contacts the metal plate to realize the pressing and positioning of the metal plate, with the continuous downward movement of the movable cutter holder, the connecting frame can pull the piston sheet in the suction accessory to move upward through the second pull rope, so that the suction accessory can negatively adsorb the metal plate to ensure the horizontal stability of the metal plate and further improve the shearing precision;

[0024] 3. The oil tank and the spray head are arranged, with the downward movement of the movable cutter holder, when the movable cutter holder and the movable pressing plate move relatively, the oil tank can be extruded to make the lubricating cooling oil in the oil tank sprayed to the cutter through the spray head to realize the lubrication and cooling of the cutter, with the downward movement of the movable cutter holder, the spray head is synchronously driven to rotate and swing to ensure the uniformity of the spraying, and the aperture is automatically adjusted during the rotation of the spray head to keep the oil impact force on the cutter at a certain level, so that the waste scraps at the shearing position of the cutter and the metal plate can be effectively flushed off. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a front view structural schematic diagram of the present application;

[0026] Figure 2 It is an installation structural schematic diagram of the movable cutter holder and the fixed cutter holder of the present application;

[0027] Figure 3 It is an installation structural schematic diagram of the movable pressing plate of the present application;

[0028] Figure 4 It is a connection structural schematic diagram of the movable cutter holder and the movable pressing plate of the present application;

[0029] Figure 5 It is a sectional view structural schematic diagram of the suction accessory of the present application;

[0030] Figure 6 It is a side view structural schematic diagram of the movable cutter holder and the fixed cutter holder of the present application;

[0031] Figure 7 It is a front view structural schematic diagram of the present application Figure 6Enlarged structure schematic diagram at middle A;

[0032] Figure 8 For the oil bag and nozzle connecting structure schematic diagram of the application.

[0033] In the figure: 1, conveying frame; 2, shearing frame; 3, hydraulic cylinder; 4, movable cutter holder; 5, fixed cutter holder; 6, adjusting plate; 7, first pull rope; 8, movable plate; 9, positioning wheel; 10, movable pressing plate; 11, guide rod; 12, first spring; 13, link frame; 14, suction accessory; 15, pull rod; 16, link plate; 17, second pull rope; 18, piston sheet; 19, second spring; 20, oil bag; 21, nozzle; 22, gear; 23, rack; 24, oil suction pipe; 25, oil discharge pipe; 26, guide column; 27, baffle; 28, third spring; 29, filter box. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the application.

[0035] Embodiment one: the existing sheet metal part continuous shearing equipment is inconvenient to conveniently lock the sheet metal part in multiple modes to ensure shearing accuracy during shearing. In order to solve this technical problem, the embodiment discloses the following technical content, please refer to Figures 1-5The utility model discloses a sheet metal part continuous shearing equipment and process, including conveying frame 1 for conveying sheet metal part, fixedly installed with shearing frame 2 on conveying frame 1, and the movable knife rest 4 is installed on shearing frame 2 and goes up and down, and fixedly installed with fixed knife rest 5 on shearing frame 2, be provided with the adjusting plate subassembly of the position of sheet metal part through the rotation of conveying frame 1, the outside elastic lifting of movable knife rest 4 is installed with movable pressing plate 10, and the outside fixed installation of movable knife rest 4 is connected with link frame 13, and link frame 13 and movable pressing plate 10 on the vertical board sliding connection, the uniform installation of movable pressing plate 10 on still adsorbs the adsorption subassembly for sheet metal part, the top fixed installation of shearing frame 2 is connected with hydraulic cylinder 3, and the output of hydraulic cylinder 3 and movable knife rest 4 are fixed, and the both ends of movable knife rest 4 and shearing frame 2 go up and down and slide, and movable knife rest 4 is sheared to sheet metal part in the process of going down with cooperation fixed knife rest 5, the adjusting plate subassembly includes the adjusting plate 6 of the symmetry elastic rotation installation above conveying frame 1, and the shaft portion outside of adjusting plate 6 is around with first pull rope 7, and the upper end of first pull rope 7 is fixedly connected to the outside of movable knife rest 4, and the movable knife rest 4 is pulled down in the process of going down through first pull rope 7 and drives adjusting plate 6 to carry out elastic rotation, and the elastic rotation connection of the one end of adjusting plate 6 close to sheet metal part has movable plate 8, and the one end of movable plate 8 close to sheet metal part is rotatably installed with positioning wheel 9, and adjusting plate 6 rotates in the process and drives movable plate 8, positioning wheel 9 synchronous rotation, and the position of sheet metal part is automatically adjusted to two positioning wheels 9 and the outside of sheet metal part are adhered to, and the lower end of movable pressing plate 10 is lower than the lower end of movable knife rest 4, and the upper surface of movable pressing plate 10 is fixedly installed with guide rod 11, and guide rod 11 is slidably penetrated movable knife rest 4, and the first spring 12 is connected between movable knife rest 4 and movable pressing plate 10, and movable pressing plate 10 is adhered to the upper surface of sheet metal part in the process of movable knife rest 4 going down, the adsorption subassembly includes the adsorption subassembly 14 of the uniform penetration fixed installation on movable pressing plate 10, and the upper end of adsorption subassembly 14 is penetrated and is elastically lifted and installed with pull rod 15, and the upper end of pull rod 15 is fixedly connected with link plate 16, and the upper end of link plate 16 is fixedly connected with second pull rope 17, and the upper end of second pull rope 17 is fixedly connected to the outside of link frame 13, and second pull rope 17 pulls pull rod 15 and elastically goes up in the process of link frame 13 being continuously pulled down by movable knife rest 4, the adsorption subassembly still includes the piston sheet 18 of the fixed installation in the lower end of pull rod 15, and the second spring 19 is fixedly connected between piston sheet 18 and the inner wall of the upper end of adsorption subassembly 14, and the lower end of adsorption subassembly 14 is sealed and adhered to the outer wall of sheet metal part.

[0036] The sheet metal part to be processed is placed on the conveying frame 1 for conveying. When the sheet metal part is conveyed to the shearing position, the control hydraulic cylinder 3 pushes the movable knife holder 4 to move 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 is attached to the side wall of the sheet metal part, the sheet metal part is pushed to adjust the position, so as to ensure that the sheet metal part is positioned in the middle position of the conveying frame 1. With the continuous downward movement of the movable knife holder 4, the movable pressing plate 10 will first contact the sheet metal part to press it tightly. At the same time, the suction accessory 14 will be tightly attached to the outer wall of the sheet metal part. When the movable knife holder 4 continues to move downward, it will drive the adapter frame 13 to move downward synchronously. At this time, the movable knife holder 4 and the movable pressing plate 10 will move relatively, so that the adapter frame 13 on the movable knife holder 4 pulls the adapter plate 16 through the second pull rope 17, so that the adapter plate 16 pulls the piston sheet 18 inside the suction accessory 14 through the pull rod 15 to move upward. At this time, the adapter frame 13 can automatically suck the sheet metal part, further improving the positioning stability of the sheet metal part in the shearing process, and ensuring the subsequent shearing precision.

[0037] In the above embodiment one, in order to further solve this technical problem, the present embodiment discloses the following technical content, as shown in Figures 6-8 As shown in the figure; the movable knife holder 4 and the movable pressing plate 10 are provided with an oil conveying assembly for conveying lubricating oil, and the movable pressing plate 10 is further provided with a swing type nozzle assembly for spraying and cooling lubricating oil. The oil conveying assembly includes an oil bag 20 fixedly connected to the outer side of the movable knife holder 4 and the movable pressing plate 10 respectively at the upper and lower ends, and the outer side of the oil bag 20 is connected with an oil suction pipe 24 and an oil discharge pipe 25 respectively. A filter box 29 is further fixedly installed on the shearing frame 2, and the lower end of the oil suction pipe 24 is in communication with the filter box 29. The oil suction pipe 24 and the oil discharge pipe 25 are both provided with a one-way valve structure. 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 pressure receiving process of the oil bag 20, the oil is discharged through the oil discharge pipe 25. The swing type nozzle assembly includes a nozzle 21 elastically and rotatably installed above the movable pressing plate 10, and the nozzle 21 is in communication with the oil discharge pipe 25. A gear 22 is fixedly installed on the outer side of the shaft of the nozzle 21, and a rack 23 is further fixedly installed on the movable knife holder 4. When the movable knife holder 4 and the movable pressing plate 10 move relatively, the gear 22 and the rack 23 are engaged. A guide column 26 is fixedly installed below the nozzle 21, and a baffle 27 is slidably installed through the outer side of the guide column 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 against the movable pressing plate 10, so as to gradually close the nozzle opening of the nozzle 21.

[0038] With the relative movement of the movable tool holder 4 and the movable pressing plate 10, the two can extrude the oil bag 20, so that the lubricating cooling oil in the oil bag 20 enters the spray head 21 through the oil discharge pipe 25, so that the oil is sprayed to the outside of the tool through the spray head 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 are engaged and connected, thereby driving the spray head 21 to elastically rotate, so that the spray head 21 sprays in a swinging manner, thereby further improving the effect of the oil on the tool. With the rotation of the spray head 21, the baffle 27 on the outside of the spray head 21 will elastically slide along the guide column 26 when it contacts the movable pressing plate 10, so that the baffle 27 can gradually block the nozzle of the spray head 21, so that the aperture of the spray head 21 gradually decreases, thereby automatically adjusting the aperture of the spray head 21 during swinging, ensuring that the impact force of the oil on the cutting tool and the sheet metal part remains at a certain level, and ensuring that the waste generated by shearing can be fully washed off. The oil droplets are filtered by the filter box 29 and then enter the oil bag 20 through the oil suction pipe 24 again, realizing cyclic cooling.

[0039] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0040] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A sheet metal part continuous shearing equipment, comprising a conveying frame (1) for conveying sheet metal parts, a shearing frame (2) fixedly installed on the conveying frame (1), a movable knife holder (4) installed on the shearing frame (2) in a lifting manner, and a fixed knife holder (5) fixedly installed on the shearing frame (2). characterized in that The conveying frame (1) is provided with an adjusting plate assembly for adjusting the position of the sheet metal part by rotating, the adjusting plate assembly comprising an adjusting plate (6) symmetrically and elastically rotatably installed above the conveying frame (1), a first pull rope (7) wound around the outer side of the shaft portion of the adjusting plate (6), the upper end of the first pull rope (7) being fixedly connected to the outer side of the movable knife holder (4), the adjusting plate (6) being elastically rotated by the first pull rope (7) during the downward movement of the movable knife holder (4), an active plate (8) being elastically rotatably connected to the end of the adjusting plate (6) close to the sheet metal part, a positioning wheel (9) being rotatably installed on the end of the active plate (8) close to the sheet metal part, the adjusting plate (6) driving the active plate (8) and the positioning wheel (9) to rotate synchronously during the rotation of the adjusting plate (6), the two positioning wheels (9) being attached to the outer side of the sheet metal part to automatically adjust the position of the sheet metal part, an active pressing plate (10) being elastically installed on the outer side of the movable knife holder (4) in a lifting manner, a link frame (13) being fixedly installed on the outer side of the movable knife holder (4), the vertical plates on the link frame (13) and the active pressing plate (10) being slidingly connected, the active pressing plate (10) being further uniformly provided with an adsorption assembly for adsorbing the sheet metal part, an oil conveying assembly for conveying lubricating oil being arranged between the movable knife holder (4) and the active pressing plate (10), and a swing type nozzle assembly for spraying and cooling the lubricating oil being further installed on the active pressing plate (10).

2. The apparatus according to claim 1, wherein: The top of the shearing frame (2) is fixedly provided with a hydraulic cylinder (3), the output end of the hydraulic cylinder (3) is fixedly connected with the movable knife holder (4), and the two ends of the movable knife holder (4) are slidingly connected with the shearing frame (2), the movable knife holder (4) being cooperated with the fixed knife holder (5) to shear the sheet metal part during the downward movement of the movable knife holder (4).

3. The apparatus according to claim 1, wherein: The lower end of the active pressing plate (10) is lower than the lower end of the movable knife holder (4), a guide rod (11) is fixedly installed on the upper surface of the active pressing plate (10), the guide rod (11) slidingly penetrates the movable knife holder (4), a first spring (12) is connected between the movable knife holder (4) and the active pressing plate (10), and the active pressing plate (10) is attached and pressed to the upper surface of the sheet metal part during the downward movement of the movable knife holder (4).

4. The apparatus according to claim 1, wherein: The adsorption assembly comprises an adsorption member (14) uniformly penetrating and fixedly installed on the active pressing plate (10), a pull rod (15) elastically installed on the upper end of the adsorption member (14) in a lifting manner, a link plate (16) fixedly connected to the upper end of the pull rod (15), a second pull rope (17) fixedly connected to the upper end of the link plate (16), and the upper end of the second pull rope (17) being fixedly connected to the outer side of the link frame (13), the second pull rope (17) pulling the pull rod (15) to elastically move upward during the continuous downward movement of the link frame (13) driven by the movable knife holder (4).

5. The apparatus according to claim 4, wherein: The adsorption assembly further comprises 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 adsorption accessory (14), and the lower end of the adsorption accessory (14) is sealingly attached to the outer wall of the sheet metal part.

6. The apparatus according to claim 5, wherein: The oil feeding assembly comprises an oil bag (20) fixedly connected at the outer sides of the movable knife holder (4) and the movable pressing plate (10) respectively, and the outer side of the oil bag (20) is connected with an oil suction pipe (24) and an oil discharge pipe (25) respectively, and a filter box (29) is further fixedly installed on the shearing frame (2), and the lower end of the oil suction pipe (24) is in communication with the filter box (29), and the oil suction pipe (24) and the oil discharge pipe (25) are both provided with a one-way valve structure, and during the stretching 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 of the oil bag (20), the oil is discharged through the oil discharge pipe (25).

7. The apparatus according to claim 6, wherein: The swinging nozzle assembly comprises a nozzle (21) elastically rotatably installed above the movable pressing plate (10), and the nozzle (21) is in communication with the oil discharge pipe (25), and a gear (22) is fixedly installed at the outer side of the shaft portion of the nozzle (21), and a rack (23) is further fixedly installed on the movable knife holder (4), and the gear (22) and the rack (23) are engagedly connected when the movable knife holder (4) and the movable pressing plate (10) move relative to each other, and a guide column (26) is fixedly installed below the nozzle (21), and a baffle (27) is slidingly installed through the outer side of the guide column (26), and a third spring (28) is fixedly connected between the baffle (27) and the nozzle (21), and during the rotation of the nozzle (21), the baffle (27) elastically slides under the resistance of the movable pressing plate (10), thereby gradually closing the nozzle opening of the nozzle (21).

8. The apparatus according to claim 7, wherein The specific method steps of the shearing process of the device are as follows: S1, place the sheet metal part to be processed on the conveying frame (1) for conveying, stop conveying when the sheet metal part is conveyed to the shearing position, control the movable knife 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 knife holder (4) continues to move downward, the movable pressing plate (10) presses the shearing end of the sheet metal part, and the adsorption accessory (14) synchronously adsorbs the sheet metal part, and the movable knife holder (4) cooperates with the fixed knife holder (5) to shear the sheet metal part; S3, when the movable knife holder (4) moves downward, the oil bag (20) is squeezed, so that the lubricating cooling oil is uniformly sprayed to the cutter at the lower end of the movable knife holder (4) through the swinging nozzle (21), thereby achieving cooling and lubrication.

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