Plate stamping equipment

Abstract

The utility model belongs to the field of bending machines, and particularly relates to a plate stamping device which comprises an upper die assembly, a lower die assembly, a first roller pin and a second roller pin, the lower die assembly comprises a pressing plate, a pedestal, a first forming block and a second forming block, and the first forming block and the second forming block are oppositely arranged on the pedestal in the first direction. The material pressing plate is arranged between the first forming block and the second forming block, and the first forming block, the second forming block and the material pressing plate form a stamping groove; the first roller pin is parallel to the second roller pin, the first roller pin is rotationally arranged on the first forming block and rotates around the axis of the first roller pin, the second roller pin is arranged on the second forming block and rotates around the axis of the second roller pin, and the first roller pin and the second roller pin are arranged at upper openings of the stamping grooves respectively; an included angle which is not zero exists between any two of the first direction, the second direction and the vertical direction. According to the utility model, the scratching phenomenon can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of bending machines, and in particular relates to a plate stamping device. Background Art

[0002] The existing bending equipment includes an upper molded piece and a lower molded piece. A flat plate is placed on the lower molded piece, which is provided with a groove. The upper molded piece moves toward the lower molded piece to press a part of the plate between the two into the groove, causing the middle part of the plate to deform to form a groove, thereby obtaining a stamped plate.

[0003] However, when the sheet is stamped and bent, the outer surface of the sheet gradually enters the groove along the inner wall of the lower die-stamped material. During the process of entering the groove, the sheet rubs against the lower die-stamped material, making it easy for friction marks to appear on the outer surface of the sheet. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a plate punching device in view of the problem that friction marks are easily generated on the outer surface of the plate during the punching and bending of the existing plate.

[0005] In order to solve the above technical problems, the embodiment of the present utility model provides a plate stamping device, an upper die assembly, a lower die assembly, a first needle roller and a second needle roller, the lower die assembly includes a pressure plate, a cushion seat, a first forming block and a second forming block, the first forming block and the second forming block are arranged on the cushion seat relative to each other along a first direction, the pressure plate is arranged between the first forming block and the second forming block, and the first forming block, the second forming block and the pressure plate form a stamping groove;

[0006] The first needle roller is parallel to the second needle roller, the axis of the first needle roller extends along the second direction, the first needle roller is rotatably arranged on the first forming block around its own axis, and the second needle roller is rotatably arranged on the second forming block around its own axis, and the first needle roller and the second needle roller are respectively arranged on both sides of the upper opening of the stamping groove along the first direction;

[0007] The upper die assembly includes an upper forming assembly and an upper die base, wherein the upper forming assembly is arranged above the stamping groove and is movably connected to the upper die base, and the upper forming assembly can move toward or away from the stamping groove;

[0008] The first direction, the second direction and the up-down direction are perpendicular to each other.

[0009] According to the sheet metal stamping equipment of the embodiment of the present invention, a first needle roller and a second needle roller are provided at the upper opening of the stamping groove. When the sheet metal is bent and gradually enters the stamping groove, the sheet metal contacts the first needle roller and the second needle roller, and the first needle roller and the second needle roller roll, thereby guiding the sheet metal, converting the sliding friction in the prior art into rolling friction, greatly reducing the friction of the upper opening of the stamping groove on the sheet metal, and reducing the occurrence of friction scratches. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A schematic structural diagram of a sheet metal stamping device before stamping and bending provided by an embodiment of the present invention;

[0011] Figure 2 A schematic structural diagram of a plate stamping device provided by an embodiment of the present invention when the die is closed;

[0012] Figure 3 A schematic structural diagram of a plate stamping device during mold opening provided by an embodiment of the present invention;

[0013] Figure 4 A schematic diagram of the position of the first forming block of a sheet metal stamping device when the die is closed provided by one embodiment of the present invention;

[0014] Figure 5 This is a schematic diagram of the position of the second forming block of the sheet metal stamping equipment when the mold is opened provided by one embodiment of the present invention.

[0015] 1. The drawing numbers in the specification are as follows: 1. seat; 11. pad; 12. first leaning block; 13. second leaning block; 14. first push rod; 15. second push rod; 16. first spring; 17. second spring; 18. stamping groove; 2. first forming block; 21. first rotating block; 22. first mold block; 221. first vertical surface; 222. first arc surface; 223. first transverse surface; 224. first guide surface; 23. first needle roller; 24. first arc groove; 3. second forming block; 31. second rotating block; 32. second mold block; 321. second vertical surface; 322. second arc surface; 323. second transverse surface; 324. second guide surface; 33. second needle roller; 34. second arc groove; 4. pressing plate; 41. first pressing plate; 411. intermediate plate; 412. first inclined surface; 413. Second inclined surface; 414, first side block; 415, second side block; 42, second pressure plate; 51, support leg; 52, lifting spring; 53, third ejector rod; 54, inner stripping plate; 55, lower plate; 56, lower die base; 61, upper die base; 611, first sliding hole; 612, second sliding hole; 613, third sliding hole; 62, pad; 63, base; 64, first slider; 65, second slider; 66, stripping spring; 67, first guide rod; 671, first limit block; 672, first smooth section; 673, first threaded section; 71, second guide rod; 711, second limit block; 712, second smooth section; 713, second threaded section; 72, third guide rod; 721, third limit block; 722, third smooth section; 723, third threaded section; 8, positioning block. DETAILED DESCRIPTION

[0016] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0017] like Figures 1 to 5 As shown, an embodiment of the present invention provides a plate stamping device, including an upper die assembly, a lower die assembly, a first needle roller 23 and a second needle roller 33, specifically referring to Figure 1-3 The lower mold assembly includes a pressing material, a pad 1, a first forming block 2, and a second forming block 3. The first forming block 2 and the second forming block 3 are arranged on the pad 1 relative to each other along a first direction. The pressing plate 4 is arranged between the first forming block and the second forming block. The first forming block 2, the second forming block 3 and the pressing plate 4 form a stamping groove 18.

[0018] The upper die assembly includes an upper forming assembly and an upper die base 61. The upper forming assembly is disposed above the punching slot 18 and is movably connected to the upper die base 61, enabling the upper forming assembly to move closer to or further from the punching slot 18 to complete reciprocating motion. The first direction, the second direction, and the up-down direction are perpendicular to each other. The first direction is perpendicular to the up-down direction, which is the left-right direction in the figure. The second direction is perpendicular to both the up-down direction and the first direction.

[0019] The upper forming assembly in the upper die assembly moves downward relative to the upper die base 61 to enter the stamping groove 18 , and the plate 100 arranged above the stamping groove 18 is pressed into the stamping groove 18 by the upper forming assembly, thereby completing the processing of the plate 100 .

[0020] The punching groove 18 in this embodiment has an upper opening and two side openings, so that this embodiment is generally used to bend the plate 100 and process the flat plate 100 into the shape of a channel steel.

[0021] The first needle roller 23 and the second needle roller 33 are both rod-shaped. The first needle roller 23 is parallel to the second needle roller 33. The axis of the first needle roller 23 extends along the second direction. The first needle roller 23 is rotatably arranged on the first forming block. The first needle roller 23 rotates around its own axis. The second needle roller 33 is arranged on the second forming block. The second needle roller 33 rotates around its own axis. The first needle roller 23 and the second needle roller 33 are respectively arranged on both sides of the upper opening of the stamping groove 18 along the first direction.

[0022] The prior art does not provide the first and second needle rollers 23, 33. When the sheet 100 enters the stamping groove 18, it is easy for sliding friction to occur with the upper opening of the stamping groove 18. In particular, when the sheet 100 is deformed from a flat shape to a channel steel shape, the surface of the sheet 100 is easily scratched with the upper opening of the stamping groove 18. This embodiment is different from the prior art in that the first and second needle rollers 23, 33 are provided at the upper opening of the stamping groove 18. When the sheet 100 is bent and gradually enters the stamping groove 18, the sheet 100 contacts the first and second needle rollers 23, 33, and the first and second needle rollers 23, 33 roll, thereby guiding the sheet 100. This converts the sliding friction in the prior art into rolling friction, greatly reducing the friction of the upper opening of the stamping groove 18 on the sheet 100 and reducing the occurrence of friction scratches.

[0023] As an example, a first arc groove 24 is provided on the first forming block 2, the first arc groove 24 is connected to the stamping groove 18, the first needle roller 23 is provided in the first arc groove 24, and the outer peripheral surface of the first needle roller 23 is tangent to the side wall of the stamping groove 18; a second arc groove 34 is provided on the second forming block 3, the second arc groove 34 is connected to the stamping groove 18, the second needle roller 33 is provided in the second arc groove 34, and the outer peripheral surface of the second needle roller 33 is tangent to the side wall of the stamping groove 18.

[0024] In this embodiment, the first arc groove 24 wraps around a portion of the outer circumference of the first needle roller 23, and the outer circumference of the wrapped first needle roller 23 accounts for a, a greater than 50% but less than 75% of the outer circumference of the first needle roller 23. The exposed portion of the outer circumference of the first needle roller 23 faces upward, and the other exposed portion of the outer circumference faces the stamping groove 18. That is, the central angle of the first arc groove 24 is a, a greater than 180 degrees and less than 270 degrees. The first arc groove 24 includes a first opening and a second opening, the first opening facing upward, and the second opening facing the stamping groove 18, wherein the first opening and the second opening are connected. When the first needle roller 23 rotates, it can guide the flat plate 100 toward the stamping groove 18 or toward the second opening through the first opening, and then guide the plate 100 into the stamping groove 18 through the second opening.

[0025] As an example, the pad 1 includes a first push rod 14, a second push rod 15, a lower mold base 56, a first spring 16, a second spring 17, a pad 11, a first support block 12 and a second support block 13; the first support block 12 and the second support block 13 are fixed on the pad 11 at intervals along the first direction, the first support block 12 and the second support block 13 form a groove, the first forming block 2 and the second forming block 3 are arranged in the groove, the first forming block 2 is close to the first support block 12, and the second forming block 3 is close to the second support block 13.

[0026] The bottom wall of the first forming block 2 and the bottom wall of the second forming block 3 abut the upper surface of the backing plate 11. The outer surface of the side wall of the first forming block 2 away from the second forming block 3 forms an angle with the bottom wall of the first forming block 2, and the outer surface of the side wall of the first forming block 2 away from the second forming block 3 converges from top to bottom toward the middle of the stamping groove 18. Similarly, the outer surface of the side wall of the second forming block 3 away from the first forming block 2 forms an angle with the bottom wall of the second forming block 3, and the outer surface of the side wall of the first forming block 2 away from the first forming block 2 converges from top to bottom toward the middle of the stamping groove 18.

[0027] The first push rod 14 and the second push rod 15 are respectively provided in the base plate 11 along the upper and lower directions. The first push rod 14 is provided on the side of the first forming block 2 away from the first leaning block 12 , and the second push rod 15 is provided on the side of the second forming block 3 away from the second leaning block 13 .

[0028] The pad 11 is arranged on the lower die base 56, and the lower die base 56 is provided with a first blind hole and a second blind hole, the first spring 16 is arranged in the first blind hole, the second spring 17 is arranged in the second blind hole, the lower end of the first push rod 14 extends into the first blind hole, and the lower end of the second push rod 15 extends into the second blind hole. The extension and contraction directions of the first spring 16 and the second spring 17 are both up and down directions. The upper end of the first spring 16 is connected to the lower end of the first push rod 14, the lower end of the first spring 16 is connected to the bottom wall of the first blind hole, the upper end of the second spring 17 is connected to the lower end of the second push rod 15, and the lower end of the second spring 17 is connected to the lower end of the second push rod, wherein the pressing plate 4 is movably connected to the pad 11, and the moving direction of the pressing plate 4 is up and down.

[0029] The working process of the first forming block 2 and the second forming block 3 of this embodiment is as follows: when the upper forming assembly contacts the plate 100 and presses the plate 100 into the stamping groove 18, the bottom walls of the first forming block 2 and the second forming block 3 gradually contact each other until the bottom walls of the first forming block 2 and the second forming block 3 are in contact with the upper surface of the pad 11, the side wall of the first forming block 2 away from the second forming block 3 is separated from the first leaning block 12, and the side wall of the second forming block 3 away from the first forming block 2 is separated from the second leaning block 13. At this time, the first spring 16 and the second spring 17 are compressed, gradually waiting for the upper forming assembly to enter the groove to complete the bending. After bending, the upper forming assembly moves upward, gradually disengaging from the stamping groove 18, and the first spring 16 and the second spring 17 gradually extend, driving the first forming block 2 and the second forming block 3 to rotate, so that the side wall of the first forming block 2 away from the second forming block 3 abuts against the first leaning block 12, and the side wall of the second forming block 3 away from the first forming block 2 abuts against the second leaning block 13. In short, the bottom wall of the first rotating block 21 and the side thereof that coincides with the side wall away from the second forming block 3 are its rotation axis, and the first forming block 2 rotates around the rotation axis under the action of the first spring 16. Similarly, the second forming block 3 also rotates, which will not be described in detail.

[0030] As an example, the first forming block 2 includes a first forming block 22 and a first rotating block 21. The first forming block 22 is fixed on the first rotating block 21. The first rotating block 21 includes a first vertical block and a first horizontal block. The first vertical block is arranged close to the first leaning block 12. The surface of the first vertical block close to the first leaning block 12 converges from top to bottom toward the center of the stamping groove 18. The first horizontal block is connected to the lower end of the first vertical block and is arranged on the side of the first vertical block away from the first leaning block 12.

[0031] The first mold block 22 is arranged above the first horizontal block, the upper surface of the first mold block 22 is flush with the upper surface of the first vertical block, and the first arc groove 24 is arranged on the first mold block 22;

[0032] A first arcuate groove and a first guide surface 224 are provided on one side of the first mold block 22 close to the stamping groove 18 from top to bottom. The first arcuate groove is used to stamp out the rounded corners of the plate 100. The upper side of the first guide surface 224 is connected to the bottom side of the arcuate groove. The first guide surface 224 gradually moves away from the first support block 12 from bottom to top.

[0033] The first arcuate groove and the first guide surface 224 are described in detail using the first mold block 22 as an example: the surface of the first arcuate groove away from the first support block 12 includes a first vertical surface 221, a first arcuate surface 222, and a first transverse surface 223. The upper side of the first vertical surface 221 is connected to the upper surface of the first mold block 22, the lower side of the first vertical surface 221 is connected to the first arcuate surface 222, the side of the first arcuate surface 222 away from the first vertical surface 221 is connected to the first transverse surface 223, the side of the first transverse surface 223 away from the first arcuate surface 222 is connected to the upper side of the first guide surface 224, and the lower side of the first guide surface 224 is connected to the bottom surface of the first mold block 22. The first arcuate surface 222 is a circular arc, the first vertical surface 221 is perpendicular to the first transverse surface 223, and when the upper mold assembly and the lower mold assembly are closed (molded), the first transverse surface 223 is flush with the upper surface of the pressing plate 4.

[0034] The second forming block 3 includes a second molding block 32 and a second rotating block 31. The second molding block 32 is fixed to the second rotating block 31. The second rotating block 31 includes a second vertical block and a second horizontal block. The second vertical block is arranged near the second leaning block 13. The surface of the second vertical block near the second leaning block 13 converges from top to bottom toward the center of the stamping groove 18. The second horizontal block is connected to the lower end of the second vertical block and is arranged on the side of the second vertical block away from the second leaning block 13.

[0035] The second block 32 is disposed above the second horizontal block. The upper surface of the second block 32 is flush with the upper surface of the second vertical block. The second arc groove 34 is disposed on the second block 32.

[0036] A second arc groove and a second guide surface 324 are provided from top to bottom on one side of the second mold block 32 close to the stamping groove 18. The second arc groove is used to stamp out the rounded corners of the plate 100. The upper side of the second guide surface 324 is connected to the bottom side of the arc groove. The second guide surface 324 gradually moves away from the second support block 13 from bottom to top.

[0037] Similarly, the surface of the second arc-shaped groove away from the second leaning block 13 includes a second vertical surface 321, a second arc surface 322, and a second transverse surface 323. The upper side of the second vertical surface 321 is connected to the upper surface of the second mold block 32, the lower side of the second vertical surface 321 is connected to the second arc surface 322, the side of the second arc surface 322 away from the second vertical surface 321 is connected to the second transverse surface 323, the side of the second transverse surface 323 away from the second arc surface 322 is connected to the upper side of the second guide surface 324, and the lower side of the second guide surface 324 is connected to the bottom surface of the second mold block 32. The second arc surface 322 is a circular arc, the second vertical surface 321 is perpendicular to the second transverse surface 323, and when the mold is closed, the second transverse surface 323 is flush with the upper surface of the pressing plate 4.

[0038] The first needle roller 23 is arranged above the first vertical surface 221, and the second needle roller 33 is arranged above the second vertical surface 321. The first vertical surface 221, the second vertical surface 321, the first horizontal surface 223, the second horizontal surface 323 and the upper surface of the pressing plate 4 form a punching groove 18.

[0039] As an example, the pressing plate 4 includes a first pressing plate 41 and a second pressing plate 42 stacked from top to bottom, and the two side walls of the first pressing plate 41 along the first direction are respectively provided with a first inclined surface 412 and a second inclined surface 413, and the first inclined surface 412 and the second inclined surface 413 converge from top to bottom toward the center of the first pressing plate 41, and the first inclined surface 412 can slide along the first guide surface 224, and the second inclined surface 413 can slide along the second guide surface 324.

[0040] When the stamping equipment for the plate 100 is closed, the first inclined surface 412 is parallel to the first guide surface 224, the second inclined surface 413 is parallel to the second guide surface 324, the upper surface of the first pressure plate 41, the bottom wall of the first arc-shaped groove, and the bottom wall of the second arc-shaped groove are coplanar for placing the bottom wall of the plate 100; the two sides of the second pressure plate 42 along the first direction respectively abut the first rotating block 21 and the second rotating block 31.

[0041] When the mold is gradually closed, the first inclined surface 412 and the first guide surface 224 gradually become parallel and gradually fit together, and the second inclined surface 413 and the second guide surface 324 gradually become parallel and gradually fit together, so that the second pressing plate 4 enters the gap between the first guide surface 224 and the second guide surface 324 and perfectly fills the gap. When the mold is opened, the first inclined surface 412 rotates around the rotation axis of the first mold block 22, and the second inclined surface 413 rotates around the rotation axis of the second mold block 32. At this time, the pressing plate 4 moves upward, and the first mold block 22, the second mold block 32 and the pressing plate 4 are separated from each other.

[0042] As an example, the first pressure plate 41 includes a first side block 414, a middle plate 411, and a second side block 415, which are sequentially arranged along a first direction. The first inclined surface 412 is arranged on a side of the first side block 414 away from the middle plate 411, and the second inclined surface 413 is arranged on a side of the second side block 415 away from the middle plate 411. The first side block 414 and the second side block 415 are respectively detachably connected to the middle plate 411. In this embodiment, the first side block 414 and the second side block 415 are detachably connected to the middle plate 411. Compared with the first pressure plate 41 manufactured by an integral molding method, the detachable method has low cost. Moreover, when the first inclined surface 412 and the second inclined surface 413 are severely worn, the damaged first side block 414 and the second side block 415 can be replaced, further saving maintenance costs.

[0043] As an example, the lower mold assembly also includes a support leg 51, a lifting spring 52, a third push rod 53, an inner release plate 54 and a lower plate 55; the lower plate 55 and the lower mold base 56 are arranged in parallel and spaced apart, and the two ends of the support leg 51 are respectively connected to the lower plate 55 and the lower mold base 56, and multiple support legs 51 are provided.

[0044] The inner stripping plate 54 is disposed between the lower plate 55 and the lower die base 56. The two ends of the lifting spring 52 are respectively connected to the lower plate 55 and the inner stripping plate 54. The lifting spring 52 extends and contracts in the vertical direction. The third ejector rod 53 is disposed on the upper surface of the inner stripping plate 54. The third ejector rod 53 is sequentially inserted through the lower die base 56 and the backing plate 11 from bottom to top. The upper end of the third ejector rod 53 can pass through the backing plate 11 upward to lift the press plate 4. In this embodiment, multiple third ejector rods 53 are provided, and the multiple third ejector rods 53 are arranged at intervals.

[0045] In this embodiment, the upper end of the third push rod 53 contacts the pressing plate 4. When the mold is closed, the pressing plate 4 moves downward until the top surface of the pressing plate 4 is flush with the first horizontal surface 223. At this time, the lifting spring 52 is compressed. When the mold is opened, the lifting spring 52 gradually extends to drive the inner stripping plate 54 and the third push rod 53 to move upward, and the third push rod 53 drives the pressing plate 4 to move upward.

[0046] As an example, the upper mold assembly further includes a spacer 62 and a demolding spring 66. The upper molding assembly and upper mold base 61 are spaced apart in the vertical direction. The spacer 62 and upper mold base 61 are detachably connected by bolts. Of course, in other embodiments, the spacer 62 and upper mold base 61 can also be detachably connected by means of a snap fastener or other means. A through hole extending vertically through the spacer 62 is provided, and a demolding spring 66 is disposed in the through hole. The two ends of the demolding spring 66 are respectively connected to the upper mold base 61 and the upper molding assembly.

[0047] Specifically, the upper molding component includes a first slider 64, a base 63 and a second slider 65 arranged in sequence along the first direction. The first slider 64 and the second slider 65 are respectively slidably connected to the base 63. The cross-section of the base 63 along the second direction is trapezoidal. The first slider 64 has a third inclined surface, and the second slider 65 has a fourth inclined surface. The third inclined surface 412 fits the inclined surface of one side of the base 63, so that the first slider 64 slides along the plane where the third inclined surface is located, and the fourth inclined surface fits the other inclined surface of the base 63. The second slider 65 slides along the plane where the fourth inclined surface is located. The first slider 64, the second slider 65 and the base 63 are all arranged below the pad 62; the lower end of the demolding spring 66 is connected to the base 63.

[0048] In this embodiment, when the mold is opened, the upper molded part does not enter the stamping groove 18. Under the action of the demoulding spring 66, the base 63 and the pad 62 are spaced apart. At this time, the bottom surface of the first slider 64 and the bottom surface of the second slider 65 are both higher than the base 63. The first slider 64, the second slider 65 and the base 63 are not on the same horizontal line. When the mold is gradually closed, the base 63 first contacts the plate 100, and the demoulding spring 66 is gradually compressed, causing the upper surface of the base 63 to gradually approach and begin to fit the pad 62, reducing the gap between the base 63 and the pad 62, thereby driving the first slider 64 to slide along one side of the base 63 and also driving the second slider to slide along the other side of the base 63 until the bottom surfaces of the first slider 64, the second slider 65 and the base 63 are coplanar. At this time, the first slider 64, the second slider 65 and the base 63 squeeze the plate 100 into the stamping groove 18.

[0049] As an example, the upper mold assembly also includes a first guide rod 67, which includes a first limit block 671, a first smooth section 672 and a first threaded section 673 connected in sequence from top to bottom. A first sliding hole 611 is provided on the side surface of the upper mold base 61 close to the pad 62. The depth of the first sliding hole 611 is greater than the thickness of the first limit block 671 along the up and down directions. The first limit block 671 is provided in the first sliding hole 611, the first smooth section 672 is passed through the pad 62, a first threaded hole is provided on the base 63, and the first threaded section 673 is threadedly connected to the first threaded hole.

[0050] In this embodiment, the upper end of the first guide rod 67 (the first limit block 671) can slide up and down in the first sliding hole 611. When the base 63 is driven by the extended demoulding spring 66 and there is a gap between it and the cushion block 62, the first limit block 671 is located at the lowest end of the first sliding hole 611. When the upper surface of the base 63 and the lower surface of the cushion block 62 are in contact with each other, the first limit block 671 is located at the highest point of the first sliding hole 611. The first sliding hole 611 is a blind hole, and the opening of the first sliding hole 611 faces the cushion block 62.

[0051] Similarly, in this embodiment, the upper mold assembly also includes a second guide rod 71 and a third guide rod 72. The second guide rod 71 includes a second limit block 711, a second smooth section 712 and a second threaded section 713 connected in sequence from top to bottom. A second sliding hole 612 is provided on the side surface of the upper mold base 61 close to the pad 62. The depth of the second sliding hole 612 is greater than the thickness of the second limit block 711 along the up and down directions. The second limit block 711 is provided in the second sliding hole 612, the second smooth section 712 is passed through the pad 62, a second threaded hole is provided on the first slider 64, and the second threaded section 713 is threadedly connected to the second threaded hole.

[0052] The third guide rod 72 includes a third limit block 721, a third smooth section 722 and a third threaded section 723 connected in sequence from top to bottom. A third sliding hole 613 is provided on the side surface of the upper mold base 61 close to the pad 62. The depth of the third sliding hole 613 is greater than the thickness of the third limit block 721 along the up and down directions. The third limit block 721 is arranged in the third sliding hole 613, the third smooth section 722 is passed through the pad 62, and a third threaded hole is provided on the second slider 65. The third threaded section 723 is threadedly connected to the third threaded hole.

[0053] As an example, a positioning hole is provided on the pad 11, and a positioning block 8 is provided on the upper surface of the lower die base 56. The positioning block 8 is inserted into the positioning hole. The positioning block 8 and the positioning hole enable the pad 1 to be quickly assembled.

[0054] The working principle of the plate 100 punching device of the embodiment of the present invention is as follows:

[0055] Before stamping and bending the sheet 100, the sheet 100 is placed between the upper die assembly and the lower die assembly, and the sheet 100 is placed above the stamping groove 18. At this time, the outer wall of the first forming block 2 away from the second forming block 3 is in contact with the first leaning block 12, and the outer wall of the second forming block 3 away from the first forming block 2 is in contact with the second leaning block 13. The pressing plate 4 is driven by the third ejector 53 to separate from the backing plate 11, and the exposed outer peripheral surface of the first needle roller 23 contacts the sheet 100, and the exposed outer peripheral surface of the second needle roller 33 contacts the sheet 100.

[0056] During stamping and bending, the base 63 gradually approaches the plate 100, the demoulding spring 66 is gradually compressed, the gap between the base 63 and the pad 62 is gradually reduced, and the first slider 64 and the second slider 65 are gradually flush with the base 63 until the bottom surface of the first slider 64, the bottom surface of the second slider 65 and the bottom surface of the base 63 are coplanar; in this process, the first rotating block 21 rotates around the rotation axis of the first forming block 2 until the bottom surface of the first rotating block 21 is in contact with the upper surface of the pad 11, and the second rotating block 31 rotates around the rotation axis of the second forming block 3 until the second rotating block 3 1 is fitted with the upper surface of the pad 11, and at the same time, the pressing plate 4 gradually moves downward until the bottom surface of the pressing plate 4 is fitted with the upper surface of the pad 11. At this time, the first arc groove of the first mold block 22, the second arc groove of the second mold block 32 and the upper surface of the pressing plate 4 constitute the stamping groove 18; the first needle roller 23 and the second needle roller 33 are driven by the plate 100 to start rolling during the bending process of the plate 100, that is, during the rotation of the first forming block 2 and the second forming block 3, to assist the plate 100 to enter the stamping groove 18.

[0057] After stamping and bending, the plate 100 is bent into a channel-shaped plate 100, the upper forming assembly moves upward, the third push rod 53 drives the pressing plate 4 to move upward, the first forming block 2 is driven by the first push rod 14 to rotate upward, and the second forming block 3 is driven by the second push rod 15 to rotate upward.

[0058] In other embodiments, the surface of the first arc-shaped groove away from the first support block 12 includes a first vertical surface 221, a first curved surface 222 and a first transverse surface 223, the upper side of the first vertical surface 221 is connected to the upper surface of the first mold block 22, the lower side of the first vertical surface 221 is connected to the first curved surface 222, the side of the first curved surface 222 away from the first vertical surface 221 is connected to the upper side of the first guide surface 224, and the lower side of the first guide surface 224 is connected to the bottom surface of the first mold block 22. The first curved surface 222 is an arc, and when the mold is closed, the side of the first curved surface 222 away from the first vertical surface 221 is flush with the upper surface of the pressing plate 4.

[0059] The surface of the second arc-shaped groove away from the second leaning block 13 includes a second vertical surface 321 and a second arc surface 322. The upper side of the second vertical surface 321 is connected to the upper surface of the second mold block 32, and the lower side of the second vertical surface 321 is connected to the second arc surface 322. The side of the second arc surface 322 away from the second vertical surface 321 is connected to the upper side of the second guide surface 324, and the lower side of the second guide surface 324 is connected to the bottom surface of the second mold block 32. The second arc surface 322 is an arc. When the mold is closed, the side of the second arc surface 322 away from the second vertical surface 321 is flush with the upper surface of the pressing plate 4.

[0060] In this embodiment, the first transverse surface 223 and the second transverse surface 323 may be removed, and the first arc surface 222 and the second arc surface 322 may be directly used for transition.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sheet metal stamping equipment, characterized in that, The present invention comprises an upper die assembly, a lower die assembly, a first needle roller and a second needle roller, wherein the lower die assembly comprises a pressing plate, a cushion seat, a first forming block and a second forming block, wherein the first forming block and the second forming block are arranged on the cushion seat relative to each other along a first direction, the pressing plate is arranged between the first forming block and the second forming block, and the first forming block, the second forming block and the pressing plate form a stamping groove; The first needle roller is parallel to the second needle roller, the axis of the first needle roller extends along the second direction, the first needle roller is rotatably arranged on the first forming block around its own axis, and the second needle roller is rotatably arranged on the second forming block around its own axis, and the first needle roller and the second needle roller are respectively arranged on both sides of the upper opening of the stamping groove along the first direction; The upper die assembly includes an upper forming assembly and an upper die base, wherein the upper forming assembly is arranged above the stamping groove and is movably connected to the upper die base, and the upper forming assembly can move toward or away from the stamping groove; The first direction, the second direction and the up-down direction are perpendicular to each other.

2. The sheet metal stamping equipment according to claim 1, characterized in that: A first arc groove is provided on the first forming block, the first arc groove is connected to the stamping groove, the first needle roller is provided in the first arc groove, and the outer peripheral surface of the first needle roller is tangent to the side wall of the stamping groove; A second arc groove is provided on the second forming block, the second arc groove is connected to the stamping groove, the second needle roller is provided in the second arc groove, and the outer peripheral surface of the second needle roller is tangent to the side wall of the stamping groove.

3. The sheet metal stamping equipment according to claim 2, characterized in that: The cushion seat includes a first push rod, a second push rod, a lower mold seat, a first spring, a second spring, a backing plate, a first leaning block and a second leaning block; the first leaning block and the second leaning block are fixed to the backing plate at intervals along a first direction, the first leaning block and the second leaning block form a groove, the first forming block and the second forming block are arranged in the groove, the first forming block is close to the first leaning block, and the second forming block is close to the second leaning block; The bottom wall of the first forming block and the bottom wall of the second forming block abut against the upper surface of the backing plate, and an outer surface of the side wall of the first forming block away from the second forming block forms an angle with the bottom wall of the first forming block, so that the outer surface of the side wall of the first forming block away from the second forming block converges from top to bottom toward the middle of the stamping groove; An outer surface of the side wall of the second forming block away from the first forming block forms an angle with the bottom wall of the second forming block, so that the outer surface of the side wall of the first forming block away from the first forming block converges from top to bottom toward the middle of the stamping groove; The first push rod and the second push rod are respectively provided on the backing plate in the up-down direction, the first push rod is provided on the side of the first forming block away from the first leaning block, and the second push rod is provided on the side of the second forming block away from the second leaning block; The pad is arranged on the lower die base, and a first blind hole and a second blind hole are provided on the lower die base. The first spring is arranged in the first blind hole, and the second spring is arranged in the second blind hole. The lower end of the first push rod extends into the first blind hole and abuts against the upper end of the first spring, and the lower end of the second push rod extends into the second blind hole and abuts against the upper end of the second spring; the pressing plate is movably connected to the pad.

4. The sheet metal stamping equipment according to claim 3, characterized in that: The first forming block includes a first forming block and a first rotating block, the first rotating block includes a first vertical block and a first horizontal block, the first vertical block is arranged close to the first leaning block, the surface of the first vertical block close to the first leaning block converges from top to bottom toward the center of the stamping groove, the first horizontal block is connected to the lower end of the first vertical block, and the first horizontal block is arranged on a side of the first vertical block away from the first leaning block; The first molded block is arranged above the first horizontal block, the upper surface of the first molded block is flush with the upper surface of the first vertical block, and the first arc groove is arranged on the first molded block; A first arcuate groove and a first guide surface are provided on one side of the first mold block close to the punching groove from top to bottom. The first arcuate groove is used to punch out the rounded corners of the plate. The upper side of the first guide surface is connected to the bottom side of the arcuate groove. The first guide surface gradually moves away from the first support block from bottom to top. The second forming block includes a second forming block and a second rotating block, the second rotating block includes a second vertical block and a second horizontal block, the second vertical block is arranged close to the second leaning block, the surface of the second vertical block close to the second leaning block converges from top to bottom toward the center of the stamping groove, the second horizontal block is connected to the lower end of the second vertical block, and the second horizontal block is arranged on a side of the second vertical block away from the second leaning block; The second block is arranged above the second horizontal block, the upper surface of the second block is flush with the upper surface of the second vertical block, and the second arc groove is arranged on the second block; A second arc groove and a second guide surface are provided on one side of the second mold block close to the stamping groove from top to bottom. The second arc groove is used to punch out the rounded corners of the plate. The upper side of the second guide surface is connected to the bottom side of the arc groove. The second guide surface gradually moves away from the second support block from bottom to top.

5. The sheet metal stamping equipment according to claim 4, characterized in that: The pressing plate includes a first pressing plate and a second pressing plate stacked from top to bottom, wherein two side walls of the first pressing plate along the first direction are respectively provided with a first inclined surface and a second inclined surface, the first inclined surface and the second inclined surface converge from top to bottom toward the center of the first pressing plate, the first inclined surface can slide along the first guide surface, and the second inclined surface can slide along the second guide surface; When the upper mold assembly and the lower mold assembly are closed, the upper surface of the first pressing plate, the bottom wall of the first arc-shaped groove and the bottom wall of the second arc-shaped groove are coplanar, so as to be used for placing the bottom wall of the plate; Two sides of the second pressing plate along the first direction respectively abut against the first rotating block and the second rotating block.

6. The sheet metal stamping equipment according to claim 5, characterized in that: The first pressure plate includes a first side block, an intermediate plate, and a second side block arranged in sequence along the first direction, the first inclined surface is arranged on a side of the first side block away from the intermediate plate, the second inclined surface is arranged on a side of the second side block away from the intermediate plate, and the first side block and the second side block are respectively detachably connected to the intermediate plate.

7. The sheet metal stamping equipment according to claim 3, characterized in that: The lower die assembly further includes a support leg, a lifting spring, a third ejector rod, an inner stripping plate, and a lower plate; the lower plate and the lower die base are arranged in parallel and spaced apart, and the two ends of the support leg are respectively connected to the lower plate and the lower die base, and the support leg is provided in plurality; The inner stripping plate is arranged between the lower plate and the lower die base, the two ends of the lifting spring are respectively connected to the lower plate and the inner stripping plate, the lifting spring is extended and retracted in the up and down directions, the third push rod is arranged on the upper surface of the inner stripping plate, the third push rod is sequentially passed through the lower die base and the pad from bottom to top, and the upper end of the third push rod can pass through the pad upward to lift the pressing plate.

8. The sheet metal stamping equipment according to claim 1, characterized in that: The upper mold assembly also includes a pad and a demoulding spring. The upper molding assembly and the upper mold base are spaced apart in the up-down direction. A through hole is provided in the pad that passes through in the up-down direction. The demoulding spring is provided in the through hole. The two ends of the demoulding spring are respectively connected to the upper mold base and the upper molding assembly.

9. The sheet metal stamping equipment according to claim 8, characterized in that: The upper forming assembly includes a first slider, a base, and a second slider sequentially arranged along a first direction, the first slider and the second slider are respectively slidably connected to the base, the cross section of the base along the second direction is trapezoidal, the first slider has a third inclined surface, the second slider has a fourth inclined surface, the third inclined surface is in contact with an inclined surface of one side of the base, so that the first slider slides along the plane where the third inclined surface is located, the fourth inclined surface is in contact with another inclined surface of the base, and the second slider slides along the plane where the fourth inclined surface is located, and the first slider, the second slider and the base are all arranged below the pad; The lower end of the demoulding spring is connected to the base.

10. The sheet metal stamping equipment according to claim 9, characterized in that: The upper mold assembly also includes a first guide rod, which includes a first limit block, a first smooth section and a first threaded section connected in sequence from top to bottom. A first sliding hole is provided on the surface of the upper mold base on one side close to the pad. The depth of the first sliding hole is greater than the thickness of the first limit block along the up and down directions. The first limit block is provided in the first sliding hole, the first smooth section is passed through the pad, and a first threaded hole is provided on the base. The first threaded section is threadedly connected to the first threaded hole.

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