Plate shearing machine for automobile stamping parts

Abstract

The invention relates to the technical field of plate shearing, and provides an automobile stamping part plate shearing machine which comprises a frame mechanism, an adjusting mechanism and a shearing mechanism. According to the plate cutting device, after a plate needing to be cut is placed on the base, the plate is inserted between a pressing wheel and the base, the pressing wheel moves upwards, accordingly, a rotating arm rotates, a rotating shaft rotates and drives a cam set to rotate, and at the moment, the cam set can rotate in the direction of a sliding frame; according to the plate shearing device, a cam in contact with a steel cable can push the steel cable of the contact part outwards, so that the top end of the steel cable is pulled downwards, a first sliding block is driven to move downwards, and a slope pushing block can push a sliding frame to the direction of a rear plate after making contact with a shearing mechanism. By means of the technical scheme, the technical problem that in the prior art, a blade gap adjusting structure is inconvenient to maintain is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of sheet metal shearing, and in particular, to a shearing machine for automotive stampings. Background Art

[0002] Due to the vigorous development of new energy vehicles, the demand for automotive stampings is also increasing day by day. In order to produce related stampings, a shearing machine is required to cut metal coils such as steel coils into sheets suitable for processing by a stamping machine. Generally, the shearing machine uses a movable upper blade and a fixed lower blade to cut the sheet between the two. Since automotive stampings have differences in thickness and material, when cutting, in order to ensure the quality of the cut edge, reduce burrs and flanging, and optimize the flatness of the cross-section, it is necessary to adjust the blade gap between the upper blade and the lower blade to ensure the efficient operation of the equipment and the quality of the cut edge. When the existing shearing machine automatically adjusts the blade gap, the control system is integrated into the entire numerical control system. After pre-inputting the thickness and material of the sheet in the numerical control system, the numerical control system automatically adjusts the blade gap according to the calculation during processing. However, the existing automatic adjustment system uses a variety of sensors and other electronic devices to obtain data. After problems occur in the relevant devices, the user cannot quickly troubleshoot and replace the faulty devices, and usually needs to report for repair, which will undoubtedly reduce the actual production efficiency. Summary of the Invention

[0003] To overcome the above defects, the present invention provides a shearing machine for automotive stampings, which solves the technical problem that the structure for adjusting the blade gap in the prior art is inconvenient to maintain.

[0004] According to one aspect, at least one embodiment of the present disclosure provides a shearing machine for automotive stampings, including a frame mechanism, which includes a base and an upper housing. The inner side surface of the base is fixedly connected with a lower blade, and further includes: An adjusting mechanism, which includes two rotating arms symmetrically and rotatably installed on the outer side surface of the upper housing. A pressing wheel is rotatably installed between the two rotating arms. A rotating shaft that rotates synchronously with the rotating arm is coaxially and slidably sleeved inside the rotating arm. The inner side surface of the upper housing is fixedly connected with symmetrical inner housings. One end of the rotating shaft penetrates through the inner housing. A cam group is fixedly sleeved on the rotating shaft. A steel cable is fixedly connected to the inner bottom surface of the inner housing. A first slider that moves vertically is slidably connected inside the inner housing. The other end of the steel cable is fixedly connected to the bottom surface of the first slider. A bevel push block is fixedly connected to one side of the first slider; A shearing mechanism, which includes a sliding frame. Linear guides are fixedly connected to the left and right sides of the sliding frame. An upper tool holder that moves vertically is slidably connected inside the sliding frame. An upper blade is fixedly connected to one side of the upper tool holder.

[0005] Preferably, the first slider is located directly above the inner housing, the steel cable passes through the top of the inner housing, two guide wheels are fixedly connected to the top of the inner housing, and the middle part of the steel cable is located between the two guide wheels.

[0006] Preferably, the cam group is fixedly connected by a plurality of coaxially mounted cams, the cam major axes of the plurality of cams decrease in sequence, and in the initial state, the side of the cam abuts against the steel cable.

[0007] Preferably, a plurality of guide posts are fixedly connected to the top surface of the inner housing, the tops of the guide posts pass through the first slider and are fixedly connected to the inner top surface of the upper housing.

[0008] Preferably, a first spring is movably sleeved on the guide post, and both ends of the first spring are fixedly connected to the top surface of the inner housing and the bottom surface of the first slider respectively.

[0009] Preferably, protective shells are fixedly connected to both sides of the upper housing, the protective shells are sleeved on the hinge joints of the rotating arms, a torsion spring is movably sleeved on the rotating arms, one end of the torsion spring is fixedly connected to the rotating arm, and the other end thereof is fixedly connected to the inner side surface of the protective shell.

[0010] Preferably, a bevel block is fixedly connected to the side of the sliding frame facing the bevel push block. When the bevel push block moves downward and contacts the bevel block, the sliding frame moves away from the lower blade.

[0011] Preferably, a vertical first sliding column is fixedly connected to the inside of the sliding frame, the first sliding column passes through the upper tool rest, and a second spring is movably sleeved on the first sliding column. When the second spring rebounds, it drives the upper tool rest to slide upward.

[0012] Preferably, a plurality of second sliding columns are fixedly connected to the side of the sliding frame away from the lower blade, a rear plate is fixedly connected to the side of the upper housing away from the lower blade, the second sliding columns pass through the rear plate, and a third spring is movably sleeved on the second sliding columns. When the third spring rebounds, it drives the sliding frame to move toward the lower blade to the initial position.

[0013] Preferably, a plurality of synchronously extended pressing heads are fixedly connected to the inside of the upper housing, a lower pushing head is fixedly connected to the inner top surface of the upper housing, and the bottom end of the lower pushing head is located inside the sliding frame.

[0014] The beneficial effects of the embodiments of the present invention are as follows: 1. In the present invention, through the provided adjusting mechanism, after placing the plate to be cut on the base, by inserting the plate between the pressing wheel and the base, the pressing wheel moves upward, causing the rotating arm to rotate. At this time, due to the rotation of the rotating arm, the rotating shaft rotates and drives the cam group to rotate. At this time, the cam group rotates towards the sliding frame, and the cam in the cam group that contacts the steel cable will push the contacting part of the steel cable outward, causing the top of the steel cable to be pulled down, thereby driving the first slider to move downward. As the first slider moves downward, after the inclined plane push block contacts the shearing mechanism, it will push the sliding frame towards the rear plate. When the materials of the plates are the same, the greater the thickness, the greater the required blade gap. Moreover, the greater the thickness of the plate, the greater the rotation angle of the rotating arm, resulting in a greater rotation angle of the cam group, and further a longer length of the steel cable being pushed outward, and thus a longer downward movement distance of the first slider, and further a farther distance that the sliding frame is pushed, enabling the adjusting mechanism to automatically adjust the blade gap between the upper blade and the lower blade according to the change in the thickness of the plate, ensuring the quality of the cut edge of the plate during shearing.

[0015] 2. Secondly, since multiple cams are used to form the cam group, when cutting plates of different materials, by pushing the rotating shaft inward or pulling it outward, the steel cable contacts different cams. Thus, after placing the plate between the base and the pressing wheel, as the cam group is driven by the rotating arm to rotate, different cams will cause different downward movement distances of the top of the steel cable. Therefore, only by using multiple cams with different parameters to form the cam group according to the material of the plate to be processed, the adjusting mechanism can be adapted to plates of various materials, and further the adjusting mechanism can automatically adjust the blade gap between the upper blade and the lower blade according to the material and thickness of the plate.

[0016] 3. Finally, the setting of the guide post plays a guiding role in the movement direction of the first slider, ensuring that the first slider only slides up and down. The provided first spring not only plays a role in pushing the first slider to return, but also since the first spring pushes the first slider upward, the upward movement of the first slider will re-tighten the steel cable, that is, it will drive the cam group to rotate in the reverse direction, and then drive the rotating arm to rotate in the reverse direction. At this time, due to the reverse rotation tendency of the rotating arm, it will apply pressure to the plate on the base through the pressing wheel. The thicker the plate, the greater the downward movement distance of the first slider, resulting in a greater elastic force provided by the first spring, and further a greater downward pressure applied by the pressing wheel to the plate, enabling the adjusting mechanism to automatically apply different magnitudes of downward pressure according to the change in the thickness of the plate to improve the stability of the plate during shearing. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments of the present invention. Obviously, the drawings described below are only some exemplary embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the content of the exemplary embodiments of the present invention and these drawings.

[0018] Figure 1 Schematic diagram of the overall structure of the present invention; Figure 2 Schematic cross-sectional view of the upper housing of the present invention; Figure 3 For the present invention Figure 2 Schematic rear side view structure; Figure 4 For the present invention Figure 3 Enlarged view of part A in the present invention; Figure 5 For the present invention Figure 3 Enlarged view of part B in the present invention; Figure 6 Schematic cross-sectional view of the adjustment mechanism of the present invention; Figure 7 Schematic cross-sectional view of the sliding frame of the present invention.

[0019] In the figure: 1. Frame mechanism; 11. Base; 12. Upper housing; 13. Pressing head; 14. Rear plate; 15. Lower blade; 16. Lower pushing head; 2. Adjustment mechanism; 21. Rotating arm; 22. Pressing wheel; 23. Rotating shaft; 24. Inner housing; 25. Cam group; 26. Steel cable; 27. First slider; 28. Inclined surface pushing block; 29. Guide post; 210. First spring; 211. Protective shell; 212. Torsion spring; 213. Guide wheel; 3. Shearing mechanism; 31. Sliding frame; 32. Linear guide rail; 33. Inclined surface block; 34. Upper tool holder; 35. First sliding column; 36. Second spring; 37. Upper blade; 38. Second sliding column; 39. Third spring. Detailed implementation manners

[0020] The following will further elaborate on the present invention in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention.

[0021] To simplify the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, to simplify the drawings for easy understanding, in some figures, only one of the components with the same structure or function is schematically shown, or only one of them is labeled. In this article, "one" not only means "only this one", but also can mean "more than one" situation, and "several" includes "two" and "more than two".

[0022] In this article, it should be noted that unless otherwise clearly specified and limited, the terms "install", "connect", and "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0023] In the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can include the direct contact between the first and second features, or can also include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0024] In the description of this embodiment, the orientation or positional relationship terms such as "upper", "lower", "left", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0025] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions, and cannot be understood as indicating or implying relative importance.

[0026] As Figures 1 to 7 shown, a shearing machine for automotive stampings in this embodiment includes a frame mechanism 1, which includes a base 11 and an upper housing 12. The inner side of the base 11 is fixedly connected with a lower blade 15, and further includes: Adjusting mechanism 2, which includes two rotating arms 21 symmetrically and rotatably mounted on the outer side surface of the upper housing 12. A pressing wheel 22 is rotatably mounted between the two rotating arms 21. A rotating shaft 23 that rotates synchronously with the rotating arm 21 is coaxially and slidably sleeved inside the rotating arm 21. Symmetric inner housings 24 are fixedly connected to the inner side surface of the upper housing 12. One end of the rotating shaft 23 penetrates the inner housing 24. A cam group 25 is fixedly sleeved on the rotating shaft 23. A steel cable 26 is fixedly connected to the inner bottom surface of the inner housing 24. A first slider 27 that moves vertically is slidably connected inside the inner housing 24. The other end of the steel cable 26 is fixedly connected to the bottom surface of the first slider 27. An inclined surface pushing block 28 is fixedly connected to one side of the first slider 27; Cutting mechanism 3, which includes a sliding frame 31. Linear guide rails 32 are fixedly connected to the left and right sides of the sliding frame 31. An upper tool holder 34 that moves vertically is slidably connected inside the sliding frame 31. An upper blade 37 is fixedly connected to one side of the upper tool holder 34.

[0027] In the present invention, through the provided adjusting mechanism 2, after placing the plate to be cut on the base 11, by inserting the plate between the pressing wheel 22 and the base 11, the pressing wheel 22 moves upward, thereby causing the rotating arm 21 to rotate. At this time, due to the rotation of the rotating arm 21, the rotating shaft 23 rotates and drives the cam group 25 to rotate. At this time, the cam group 25 rotates in the direction of the sliding frame 31. And at this time, the cam in the cam group 25 that contacts the steel cable 26 will push the contacted part of the steel cable 26 outward, so that the top end of the steel cable 26 is pulled down, thereby driving the first slider 27 to move downward. As the first slider 27 moves downward, after the inclined surface pushing block 28 contacts the cutting mechanism 3, it will push the sliding frame 31 in the direction of the rear plate 14. When the plate materials are the same, the greater the thickness, the greater the required blade gap. And the greater the thickness of the plate, the greater the rotation angle of the rotating arm 21, so that the rotation angle of the cam group 25 is greater, and further the length of the steel cable 26 being pushed outward is longer, and further the downward movement distance of the first slider 27 is longer, so that the distance that the sliding frame 31 is pushed is farther. Thus, the adjusting mechanism 2 can automatically adjust the blade gap between the upper blade 37 and the lower blade 15 with the change of the plate thickness, ensuring the quality of the cut edge of the plate during cutting.

[0028] Secondly, since multiple cams are used to form the cam group 25, when cutting plates made of different materials, by pushing the rotating shaft 23 inward or pulling it outward, the steel cable 26 is brought into contact with different cams. Thus, after the plate is placed between the base 11 and the pressure wheel 22, as the cam group 25 is driven by the rotating arm 21 to rotate, different cams will cause the downward movement distance of the top end of the steel cable 26 to be different. Therefore, only by using multiple cams with different parameters to form the cam group 25 according to the material of the plate to be processed, the adjusting mechanism 2 can be adapted to plates of various materials, and further the adjusting mechanism 2 can automatically adjust the blade gap between the upper blade 37 and the lower blade 15 according to the material and thickness of the plate.

[0029] Among them, the first slider 27 is located directly above the inner housing 24. The steel cable 26 passes through the top of the inner housing 24. Two guide wheels 213 are fixedly connected to the top of the inner housing 24, and the middle part of the steel cable 26 is located between the two guide wheels 213.

[0030] The two guide wheels 213 keep the steel cable 26 that is not located in the inner housing 24 in a vertical state all the time, avoiding errors in the descending distance of the first slider 27 caused by the inclination of the steel cable 26 and resulting in too small a blade gap.

[0031] Among them, the cam group 25 is fixedly connected by multiple coaxially installed cams. The cam major axes of the multiple cams decrease in sequence. In the initial state, the side of the cam abuts against the steel cable 26.

[0032] From Figure 6 it can be seen that one of the multiple cams forming the cam group 25 is in contact with the steel cable 26, and at the same time, a groove is provided on the cam to prevent the problem that the steel cable 26 is separated from the cam when the cam group 25 rotates around the rotating shaft 23.

[0033] Among them, a plurality of guide posts 29 are fixedly connected to the top surface of the inner housing 24. The top ends of the guide posts 29 pass through the first slider 27 and are fixedly connected to the inner top surface of the upper housing 12. A first spring 210 is movably sleeved on the guide posts 29. The two ends of the first spring 210 are respectively fixedly connected to the top surface of the inner housing 24 and the bottom surface of the first slider 27.

[0034] The provision of the guide post 29 serves to guide the movement direction of the first slider 27, ensuring that the first slider 27 can only slide up and down. The provided first spring 210 not only functions to push the first slider 27 back, but also, since the first spring 210 will push the first slider 27 upward, the upward movement of the first slider 27 will re-tighten the cable 26, that is, it will drive the cam group 25 to rotate in the reverse direction, thereby driving the rotating arm 21 to rotate in the reverse direction. At this time, due to the tendency of the rotating arm 21 to rotate in the reverse direction, it will apply pressure to the plate on the base 11 through the pressing wheel 22. And the thicker the plate, the greater the downward movement distance of the first slider 27, thus the greater the elastic force provided by the first spring 210, and further the greater the downward pressure applied by the pressing wheel 22 to the plate, enabling the adjusting mechanism 2 to automatically apply different magnitudes of downward pressure as the thickness of the plate changes, so as to improve the stability of the plate during shearing.

[0035] Wherein, protective shells 211 are fixedly connected to both sides of the upper shell 12. The protective shells 211 are sleeved on the hinge joints of the rotating arm 21. A torsion spring 212 is movably sleeved on the rotating arm 21. One end of the torsion spring 212 is fixedly connected to the rotating arm 21, and the other end thereof is fixedly connected to the inner side surface of the protective shell 211.

[0036] By providing the torsion spring 212, the torsion spring 212 will drive the rotating arm 21 to have a tendency to rotate in the reverse direction. And when the thickness of the plate becomes thicker, the force exerted by the torsion spring 212 will increase, so that the torsion spring 212 can apply different degrees of pressure as the thickness of the plate changes, and by combining with the elastic force provided by the first spring 210 to press the plate on the base 11, so as to improve the stability of the plate during shearing, and further ensure the quality of the cut edge of the plate.

[0037] Wherein, a bevel block 33 is fixedly connected to the side of the sliding frame 31 facing the bevel push block 28. When the bevel push block 28 moves downward and contacts the bevel block 33, the sliding frame 31 moves in a direction away from the lower blade 15.

[0038] By providing the bevel push block 28 and the bevel block 33, not only can the slope of the bevels of the bevel push block 28 and the bevel block 33 be adjusted to adjust the pushing distance of the sliding frame 31 by the bevel push block 28, but also the direct contact between the bevel push block 28 and the sliding frame 31 can be avoided, ensuring the service life of the sliding frame 31.

[0039] Among them, a vertical first sliding column 35 is fixedly connected inside the sliding frame 31. The first sliding column 35 penetrates through the upper tool rest 34. A second spring 36 is movably sleeved on the first sliding column 35. When the second spring 36 rebounds, it drives the upper tool rest 34 to slide upward. A plurality of second sliding columns 38 are fixedly connected to the side of the sliding frame 31 away from the lower blade 15. A rear plate 14 is fixedly connected to the side of the upper housing 12 away from the lower blade 15. The second sliding columns 38 penetrate through the rear plate 14. A third spring 39 is movably sleeved on the second sliding columns 38. When the third spring 39 rebounds, it drives the sliding frame 31 to move towards the direction close to the lower blade 15 to the initial position. A plurality of synchronously extended pressing heads 13 are fixedly connected inside the upper housing 12. A lower pushing head 16 is fixedly connected to the inner top surface of the upper housing 12. The bottom end of the lower pushing head 16 is located inside the sliding frame 31.

[0040] As Figures 3 to 7 shown, the sliding frame 31 is pushed by the third spring 39 to reset. At the same time, the reset structure composed of the second sliding column 38 and the third spring 39 can also be replaced by a single-acting cylinder according to the selection. After the sheet is sheared, compressed air is injected into the cylinder to make the telescopic end extend, pushing the sliding frame 31 back to its position closest to the lower blade 15. When the first slider 27 pushes the sliding frame 31 to move, the telescopic end of the single-acting cylinder will move back into the cylinder body again; through the set reset structure, the sliding frame 31 can be automatically reset after the sheet is cut.

[0041] Working principle: When shearing a sheet, first insert the sheet between the pressure wheel 22 and the base 11. As the pressure wheel 22 moves upward, the rotating arm 21 rotates, drives the cam group 25 to rotate through the transmission of the rotating shaft 23, makes the top end of the steel cable 26 move downward, thereby pulling the first slider 27 to move downward, making the inclined surface push block 28 push the sliding frame 31 to move away from the lower blade 15, and then increasing the blade gap between the lower blade 15 and the upper blade 37, so as to automatically adjust the blade gap according to the thickness of the sheet.

[0042] When shearing sheets of different materials, by pushing the rotating shaft 23 inward or outward, the cam matching the material data of the sheet contacts the steel cable 26, so that when the rotating arm 21 rotates, the downward movement distance of the first slider 27 is different, so that the adjusting mechanism 2 adapts to sheets of different materials.

[0043] Subsequently, push the sheet forward so that the part of the sheet to be cut coincides with the lower blade 15. Then control the telescopic component of the lower pushing head 16 to extend, so that it pushes the upper tool rest 34 to move downward, so that the upper blade 37 and the lower blade 15 shear the sheet.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A shearing machine for automotive stampings, comprising a frame mechanism (1), which includes a base (11) and an upper housing (12), and a lower blade (15) is fixedly connected to the inner side surface of the base (11), characterized in that, It further includes: An adjusting mechanism (2), which includes two rotating arms (21) symmetrically and rotatably installed on the outer side surface of the upper housing (12). A pressing wheel (22) is rotatably installed between the two rotating arms (21). A rotating shaft (23) that rotates synchronously with the rotating arm (21) is coaxially and slidably sleeved inside the rotating arm (21). Symmetrical inner housings (24) are fixedly connected to the inner side surface of the upper housing (12). One end of the rotating shaft (23) penetrates the inner housing (24). A cam group (25) is fixedly sleeved on the rotating shaft (23). A steel cable (26) is fixedly connected to the inner bottom surface of the inner housing (24). A first slider (27) that moves vertically is slidably connected inside the inner housing (24). The other end of the steel cable (26) is fixedly connected to the bottom surface of the first slider (27). A bevel push block (28) is fixedly connected to one side of the first slider (27); A shearing mechanism (3), which includes a sliding frame (31). Linear guide rails (32) are fixedly connected to the left and right sides of the sliding frame (31). An upper tool holder (34) that moves vertically is slidably connected inside the sliding frame (31). An upper blade (37) is fixedly connected to one side of the upper tool holder (34).

2. The plate shearing machine for automobile stamping parts according to claim 1, characterized in that, The first slider (27) is located directly above the inner housing (24). The steel cable (26) penetrates the top of the inner housing (24). Two guide wheels (213) are fixedly connected to the top of the inner housing (24). The middle part of the steel cable (26) is located between the two guide wheels (213).

3. A shearing machine for automotive stampings according to claim 1, characterized in that, The cam group (25) is fixedly connected by a plurality of coaxially installed cams. The cam major axes of the plurality of cams decrease in sequence. In the initial state, the side of the cam abuts against the steel cable (26).

4. The shearing machine for automotive stampings according to claim 1, wherein A plurality of guide posts (29) are fixedly connected to the top surface of the inner housing (24). The top ends of the guide posts (29) penetrate the first slider (27) and are fixedly connected to the inner top surface of the upper housing (12).

5. The plate shearing machine for automobile stamping parts according to claim 4, characterized in that, A first spring (210) is movably sleeved on the guide post (29). The two ends of the first spring (210) are respectively fixedly connected to the top surface of the inner housing (24) and the bottom surface of the first slider (27).

6. The shearing machine for automobile stamping parts according to claim 1, characterized in that, Protective shells (211) are fixedly connected to both sides of the upper housing (12). The protective shells (211) are sleeved on the hinge joints of the rotating arms (21). A torsion spring (212) is movably sleeved on the rotating arm (21). One end of the torsion spring (212) is fixedly connected to the rotating arm (21), and the other end is fixedly connected to the inner side surface of the protective shell (211).

7. A shearing machine for automotive stampings according to claim 1, characterized in that, A bevel block (33) is fixedly connected to one side of the sliding frame (31) facing the bevel push block (28). When the bevel push block (28) moves downward and contacts the bevel block (33), the sliding frame (31) moves in a direction away from the lower blade (15).

8. A shearing machine for automotive stampings according to claim 1, characterized in that, A vertical first sliding column (35) is fixedly connected to the inside of the sliding frame (31). The first sliding column (35) penetrates the upper tool holder (34). A second spring (36) is movably sleeved on the first sliding column (35). When the second spring (36) rebounds, it drives the upper tool holder (34) to slide upward.

9. The shearing machine for automotive stamping parts according to claim 1, characterized in that, On one side of the sliding frame (31) away from the lower blade (15), a plurality of second sliding columns (38) are fixedly connected. On one side of the upper housing (12) away from the lower blade (15), a rear plate (14) is fixedly connected. The second sliding columns (38) penetrate through the rear plate (14). A third spring (39) is movably sleeved on the second sliding columns (38). When the third spring (39) rebounds, it drives the sliding frame (31) to move towards the direction close to the lower blade (15) to the initial position.

10. A shearing machine for automotive stamping parts according to claim 1, characterized in that, Inside the upper housing (12), a plurality of synchronously extended pressing plate heads (13) are fixedly connected. On the inner top surface of the upper housing (12), a downward pushing head (16) is fixedly connected. The bottom end of the downward pushing head (16) is located inside the sliding frame (31).

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