Panel processing punch forming die

Abstract

The invention belongs to the technical field of plate processing, and relates to a plate processing punch forming die which comprises an upper mounting plate and a lower mounting plate, an upper die plate is detachably arranged on the upper mounting plate, a lower die plate is detachably arranged on the lower mounting plate, and the upper die plate comprises a fixing block and a pressing plate which slides up and down and is arranged on the fixing block in a resettable mode. The lower die plate comprises a cushion block and a push rod which slides up and down and is arranged on the cushion block in a resettable sliding mode, the pressing plate has a downward radian, a groove matched with the pressing plate is formed in the middle of the cushion block, the plate is bent when the pressing plate moves downwards and gets close to the cushion block, and a punching head is rotationally arranged at the bottom of the upper die plate. The punching heads are used for punching the plate when entering the punching grooves, chamfering cutters are arranged on the punching heads, and a transmission assembly is installed between the pressing plate and the punching heads; and the pressing plate moves upwards and enables the punching head to rotate through the transmission assembly, and when the punching head rotates, the through hole is polished through rotation of the punching head.

Description

Technical Field

[0001] The present invention belongs to the technical field of sheet metal processing, and particularly relates to a stamping and forming die for sheet metal processing. Background Art

[0002] For the stamping and bending of flat metal plates, most are achieved by a stamping machine. That is, the flat metal plate to be stamped and bent is placed under the punch of the stamping machine, and then the hydraulic mechanism drives the punch to move up and down reciprocally. Each time the punch moves upward, the flat metal plate is adjusted manually so that when the punch moves downward subsequently, it can act on different positions of the flat metal plate.

[0003] A metal sheet stamping die is disclosed in the patent document with the authorization announcement number CN113477808B, which includes a base, pillars, and a top plate. An upper punching die is installed on the top plate, a lower die base matching the upper punching die is arranged on the base, chutes are opened on both sides of the lower die base, clamping components are slidably arranged in the chutes, mounting seats are arranged on both sides of the lower die base, hydraulic cylinders are fixed on the mounting seats, the output end of the hydraulic cylinder is connected with the clamping components, and a chip removal mechanism is arranged on the base; the chip removal mechanism includes a tooth column rotatably connected to the mounting seat, a rack is connected to the output end of the hydraulic cylinder, the rack meshes with the tooth column, and a rotating ring is arranged outside the lower die base. The present invention can fix metal sheets of different specifications and sizes, blow air downward into the lower die base from multiple directions through a nozzle to completely clean the waste materials at the corners inside the lower die base, and by arranging an ejector post, the metal sheet inside the lower die base can be automatically lifted after stamping.

[0004] When stamping the sheet metal in the above patent document, although the sheet metal after stamping can be lifted for easy removal, when punching holes are still required during the stamping of the sheet metal, when the punching head rises, the punching head is easily stuck in the holes after punching. When punching the same sheet metal again next time, it is easy to cause the punching position to shift, which further affects the punching position when punching the same sheet metal again. Summary of the Invention

[0005] In view of the above problems, the present invention provides a stamping and forming die for sheet metal processing, which well solves the problems of the stamping and forming die for sheet metal processing.

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows: A stamping die for sheet metal processing includes an upper mounting plate and a lower mounting plate. An upper template is detachably arranged on the upper mounting plate, and a lower template is detachably arranged on the lower mounting plate. The upper template includes a fixed block and a pressing plate that slides up and down and can be reset on the fixed block. The lower template includes a cushion block and a push rod that slides up and down and can be reset on the cushion block. The pressing plate has a downward arc, and the middle of the cushion block has a groove adapted to the pressing block. When the pressing plate moves downward and approaches the cushion block, the sheet metal is bent. A punching head is rotatably arranged at the bottom of the upper template, and a punching groove runs through the upper and lower parts of the lower template. The punching head and the punching groove are mutually adapted. When the punching head enters the punching groove, the sheet metal is punched. Chamfering knives are provided on the punching heads, and a transmission component is installed between the pressing plate and the punching heads. After the pressing plate finishes stamping the sheet metal, it rises and pushes the punching heads to rotate through the transmission component.

[0007] Further, a sliding groove is formed on the cushion block, and a first compression spring is installed between the sliding groove and the push rod. One end of the first compression spring is connected to the inner bottom wall of the sliding groove, and the other end is connected to the bottom of the push rod. When the first compression spring is not compressed, the upper end of the push rod is lower than the upper end of the cushion block; by setting the push rod, after the sheet metal is stamped, the sheet metal can move upward a certain distance under the push of the push rod, thus facilitating the movement of the sheet metal.

[0008] Further, both sides of the lower template are provided with guiding components. The guiding components include guiding grooves fixedly arranged on the lower template. A guiding plate (32) is slidably arranged in the guiding grooves. A second compression spring (33) is installed between the bottom of the guiding plate (32) and the guiding grooves. One end of the second compression spring (33) is connected to the guiding plate (32), and the other end is connected to the guiding grooves; by setting the guiding components, it plays a certain guiding role in the movement of the sheet metal.

[0009] Further, the transmission component includes a gear (41), a rack, a pushing inclined plane and a tension spring. The gear (41) is fixedly arranged on the punching head, the rack is slidably arranged on the upper template in the left-right direction, the tension spring is arranged between the rack and the upper template, and the inclined plane is formed on the pressing plate and contacts the rack; by setting the transmission component, when the sheet metal moves upward, the pressing plate can drive the punching column to rotate when moving.

[0010] Further, an installation groove is arranged on the mounting plate, the installation groove is detachably arranged on the pressing plate, the punching head is rotatably arranged in the installation groove, a limiting ring is arranged at the upper end of the installation groove, and an annular protrusion is arranged at the end of the punching head. The annular protrusion is adapted to the annular block; by setting the installation groove, the punching head can rotate with limited position.

[0011] Further, a limiting groove is formed in the fixing block, the mounting plate is arranged to slide up and down in the limiting groove, and a limiting spring is arranged between the top of the mounting plate and the limiting groove; by arranging the limiting groove and the limiting spring, the mounting plate can move up and down to drive the transmission component to operate.

[0012] Further, the force for compressing the limiting spring is greater than the force required for bending the sheet material.

[0013] Further, the pressing plate is fixedly arranged on the upper mounting plate through bolts, the cushion block is fixedly arranged on the lower mounting plate through bolts, and a plurality of fixing grooves are arranged on both the upper mounting plate and the lower mounting plate; by arranging the fixing grooves, the cushion block and the pressing plate can be respectively fixed at different positions on the lower mounting plate and the upper mounting plate.

[0014] Further, the pressing plate is fixedly arranged on the upper mounting plate through bolts, the cushion block is fixedly arranged on the lower mounting plate through bolts, and a plurality of fixing grooves are arranged on both the upper mounting plate and the lower mounting plate.

[0015] Further, a material receiving box is arranged on the cushion block, and the material receiving box is located below the through hole; by arranging the material receiving box, the waste materials under the punching are collected.

[0016] Further, at least two chamfering knives are arranged on each punching head, and the chamfering knives are evenly arranged along the circumferential direction of the punching head; by arranging a plurality of chamfering knives, chamfers are made for the punching of the sheet material. Compared with the prior art, the present invention has the following beneficial effects: 1. When stamping the sheet material, the sheet material is placed between the upper template and the lower template. Since the pressing plate has a downward arc; When stamping the sheet material, the sheet material can be bent, and at this time, the pressing plate descends to the limit position; 2. Through the push rod arranged on the cushion block, when the sheet material is stamped, the push rod can automatically push the sheet material to rise, facilitating the left and right movement of the sheet material; 3. After the sheet material is bent, the punching head arranged on the upper template punches the sheet material. When the upper template continues to descend to compress the limiting spring, at this time, the pressing plate moves upward and drives the punching head to rotate through the transmission component. When the punching head rotates, the through hole is polished by the rotation of the punching head; 4. When the punching head moves upward, it can directly move out from the through hole, avoiding driving the sheet material when the punching head moves upward. Chamfers are made at the punching positions through the chamfering knives arranged on the punching head, avoiding harm to the operator when taking the sheet material later. Description of the Drawings Figure 1 It is a three-dimensional structural schematic diagram of the present invention; Figure 2 It is a front structural schematic diagram of the present invention; Figure 3 Schematic diagram of the punching and punching groove structure of the present invention; Figure 4 Schematic three-dimensional structure diagram of the lower mounting plate of the present invention; Figure 5 Schematic diagram of the structure of the guiding component of the present invention; Figure 6 Schematic diagram of the structure of the chamfering tool and the punching head in cooperation of the present invention; Figure 7 Schematic diagram of the structure of the transmission component of the present invention.

[0017] In the figure: 1. Upper mounting plate; 11. Upper template; 111. Fixed block; 112. Pressing plate; 113. Installation groove; 114. Limiting ring; 115. Annular protrusion; 116. Limiting groove; 117. Limiting spring; 2. Lower mounting plate; 21. Lower template; 211. Spacer block; 212. Pushing rod; 213. Sliding groove; 214. First compression spring; 3. Guiding component; 31. Guiding groove; 32. Guiding plate; 33. Second compression spring; 4. Transmission component; 41. Gear; 42. Rack; 43. Pushing inclined plane; 44. Pulling spring; 5. Material receiving box; 6. Chamfering tool; 7. Punching head; 8. Punching groove. Detailed implementation manners

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

[0019] As Figure 1 - Figure 7 shown, a stamping and forming die for sheet metal processing includes an upper mounting plate 1 and a lower mounting plate 2. An upper template 11 is detachably arranged on the upper mounting plate 1, and a lower template 21 is detachably arranged on the lower mounting plate 2. The upper template 11 includes a fixed block 111 and a pressing plate 112 that slides up and down and can be reset on the fixed block 111. The lower template 21 includes a spacer block 211 and a pushing rod 212 that slides up and down and can be reset on the spacer block 211. The pressing plate 112 has a downward arc, and the middle of the spacer block 211 has a groove adapted to the pressing block. When the pressing plate 112 moves downward and approaches the spacer block 211, the sheet metal is bent.

[0020] When stamping and bending a sheet, place the sheet between the upper template 11 and the lower template 21. When the upper mounting plate 1 approaches the lower mounting plate 2, the upper template 11 approaches the lower template 21. When the upper template 11 moves downward, since the pressing plate 112 has a downward arc and the cushion block 211 is provided with a groove adapted to the pressing plate 112, the sheet will be extruded when the upper template 11 moves downward, causing the sheet to bend. After the sheet is bent, the sheet needs to be taken out.

[0021] A push rod 212 is arranged on the cushion block 211 to slide up and down. The push rod 212 is located in the groove on the cushion block 211. A chute 213 is provided on the cushion block 211. A first compression spring 214 is installed between the chute 213 and the push rod 212. One end of the first compression spring 214 is connected to the inner bottom wall of the chute 213, and the other end is connected to the bottom of the push rod 212. When stamping the sheet, the push rod 212 slides into the chute 213, and at this time the first compression spring 214 is compressed. When the sheet is bent and the upper mounting plate 1 moves upward, the first compression spring 214 resets, and the push rod 212 moves upward under the action of the first compression spring 214 and pushes the pressed sheet upward to facilitate taking out the sheet.

[0022] It should be noted that when the first compression spring 214 is in its initial position, that is, when the first compression spring 214 is not compressed, the upper end of the push rod 212 is lower than the upper end of the cushion block 211. When performing continuous stamping and multiple grooves need to be stamped on the same sheet, when the sheet enters between the upper template 11 and the lower template 21, the movement of the push rod 212 interfering with the movement of the sheet is avoided.

[0023] Both sides of the lower template 21 are provided with a guiding assembly 3. When continuously stamping the sheet, the sheet is guided by the guiding assembly 3 to prevent the sheet from shifting during movement. The guiding assembly 3 includes a guiding groove 31 fixedly arranged on the lower template 21. A guiding plate 32 is slidably arranged in the guiding groove 31. A second compression spring 33 is installed between the bottom of the guiding plate 32 and the guiding groove 31. One end of the second compression spring 33 is connected to the guiding plate 32, and the other end is connected to the guiding groove 31. When the upper template 11 descends to contact the guiding plate 32, the guiding plate 32 is pushed downward and the second compression spring 33 is compressed. When the upper template 11 ascends, the guiding plate 32 moves upward under the action of the second compression spring 33.

[0024] In this embodiment, when punching a sheet metal, it is necessary to punch holes in the sheet metal. A punching head 7 is rotatably arranged at the bottom of the upper template 11, and a punching groove is vertically penetrated in the lower template 21. The punching head 7 is adapted to the punching groove. When the punching head 7 enters the punching groove, it punches the sheet metal. After punching the sheet metal, when the punching head 7 moves upward, it will drive the whole sheet metal upward, which may cause the displacement of the sheet metal and affect the stamping of the sheet metal. After directly punching the sheet metal, burrs will also appear in the formed holes, which is not convenient for the movement of the punching head 7 and may also pose a safety hazard.

[0025] Chamfering knives 6 are arranged on the punching head 7. A transmission component is installed between the pressing plate 112 and the punching head 7. After the pressing plate 112 finishes stamping the sheet metal, it rises and pushes the punching head 7 to rotate through the transmission component; when stamping the sheet metal, when the upper template 11 descends, the punching head 7 enters the punching groove, and at the same time, a through hole is left on the sheet metal. When the pressing plate 112 continues to move downward, the pressing plate 112 moves upward at this time and makes the punching head 7 rotate through the transmission component. Since the punching head 7 is provided with chamfering knives 6, the burrs on the sheet metal are scraped off. At the same time, when the punching head 7 rotates, the through hole formed on the sheet metal is polished. When the punching head 7 moves upward, there is a clearance fit between the punching head 7 and the through hole. When the punching head 7 disengages from the through hole, it will no longer affect the position of the sheet metal.

[0026] Specifically, the transmission component includes a gear 41, a rack 42, a pushing inclined surface 43 and a tension spring 44. The gear 41 is fixedly arranged on the punching head 7. The rack 42 is slidably arranged on the upper template 11 in the left-right direction. The tension spring 44 is arranged between the rack 42 and the upper template 11. The inclined surface is opened on the pressing plate 112 and contacts the rack 42; when the upper template 11 moves downward, first stamp the sheet metal to make the sheet metal deformed by stamping. The upper template 11 continues to move downward to make the punching head 7 punch the sheet metal. At this time, the pushing inclined surface 43 on the pressing plate 112 contacts the end of the rack 42. At this time, when the upper mounting plate 1 descends, the pressing plate 112 moves upward and pushes the rack 42 to move through the inclined surface. The movement of the rack 42 drives the gear 41 to rotate, thereby driving the punching head 7 to rotate. The through hole is polished by the rotation of the punching head 7. When the punching head 7 moves upward, it can directly move out of the through hole, avoiding the punching head 7 driving the sheet metal upward when moving upward and affecting the subsequent punching of the sheet metal. At the same time, when the punching head 7 rotates, the through hole is chamfered by the chamfering knives arranged on it, avoiding hurting the operator when taking the sheet metal subsequently.

[0027] Specifically, a limiting groove 116 is formed in the fixed block 111. The mounting plate is slidably arranged in the limiting groove 116. A limiting spring 117 is arranged between the top of the mounting plate and the limiting groove 116. The force for compressing the limiting spring 117 is greater than the force required for bending the plate. After the pressing plate 112 finishes stamping the plate, when the fixed block 111 continues to descend, the limiting spring 117 is compressed to move the pressing plate 112 upward.

[0028] Specifically, a mounting groove 113 is formed in the mounting plate. The mounting groove 113 is detachably arranged on the pressing plate 112. The punching head 7 is rotatably arranged in the mounting groove 113. A limiting ring 114 is arranged at the upper end of the mounting groove 113. An annular protrusion 115 is arranged at the end of the punching head 7. The annular protrusion 115 is adapted to the annular block. By arranging the limiting ring 114 and the annular protrusion 115 to limit the punching head 7, when the punching head 7 is worn and needs to be replaced, the mounting groove 113 is disassembled and the punching head 7 is disassembled.

[0029] In this embodiment, the pressing plate 112 is fixedly arranged on the upper mounting plate 1 by bolts, and the cushion block 211 is fixedly arranged on the lower mounting plate 2 by bolts. A plurality of fixing grooves are arranged on both the upper mounting plate 1 and the lower mounting plate 2. The pressing plate 112 is fixed at different positions on the upper mounting plate 1 by installing bolts in different fixing grooves, and the cushion block 211 is fixed on different lower mounting plates 2 by installing bolts in different fixing grooves.

[0030] In this embodiment, a material receiving box 5 is arranged on the cushion block 211. The material receiving box 5 is located below the through hole. After the punching head 7 punches the plate, the dropped waste is directly collected in the material receiving box 5.

[0031] Specifically, at least two chamfering knives 6 are arranged on each punching head 7, and the chamfering knives 6 are uniformly arranged along the circumferential direction of the punching head 7.

[0032] The working principle of the present invention: When stamping a sheet, the sheet is placed between the upper template 11 and the lower template 21. Since the pressing plate 112 has a downward arc, the sheet can be bent when stamping the sheet. At this time, the pressing plate 112 descends to the limit position; through the push rod 212 provided on the cushion block 211, when the sheet is stamped, the push rod 212 can automatically push the sheet up, facilitating the left and right movement of the sheet; after the sheet is bent, the punching head 7 provided on the upper template 11 punches the sheet. When the upper template 11 continues to descend to compress the limit spring 117, at this time, the pressing plate 112 moves upward and rotates the punching head 7 through the transmission assembly. When the punching head 7 rotates, the through hole is polished by the rotation of the punching head 7. When the punching head 7 moves upward, it can directly move out of the through hole, avoiding driving the sheet when the punching head 7 moves upward. The chamfering knife 6 provided on the punching head 7 chamfers the punching position to avoid harming the operator when taking the sheet later.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A stamping die for sheet metal processing, comprising an upper mounting plate (1) and a lower mounting plate (2). The upper template (11) is detachably arranged on the upper mounting plate (1), and the lower template (21) is detachably arranged on the lower mounting plate (2). It is characterized in that: The upper template (11) includes a fixed block (111) and a pressing plate (112) that slides up and down and can be reset on the fixed block (111). The lower template (21) includes a spacer block (211) and a push rod (212) that slides up and down and can be reset on the spacer block (211). The pressing plate (112) has a downward arc. The middle of the spacer block (211) has a groove adapted to the pressing block. When the pressing plate (112) moves downward and approaches the spacer block (211), the sheet metal is bent; A punching head (7) is rotatably arranged at the bottom of the upper template (11). A punching groove runs through the upper and lower parts of the lower template (21). The punching head (7) and the punching groove are mutually adapted. When the punching head (7) enters the punching groove, the sheet metal is punched. Chamfering knives (6) are provided on the punching head (7). A transmission component is installed between the pressing plate (112) and the punching head (7). After the pressing plate (112) finishes stamping the sheet metal, it rises and drives the punching head (7) to rotate through the transmission component.

2. The sheet metal processing stamping die according to claim 1, wherein: A sliding groove (213) is formed in the spacer block (211). A first compression spring (214) is installed between the sliding groove (213) and the push rod (212). One end of the first compression spring (214) is connected to the inner bottom wall of the sliding groove (213), and the other end is connected to the bottom of the push rod (212). When the first compression spring (214) is not compressed, the upper end of the push rod (212) is lower than the upper end of the spacer block (211).

3. The sheet metal processing stamping die according to claim 1, characterized in that: Guide components (3) are provided on both sides of the lower template (21). The guide components (3) include guide grooves (31) fixedly arranged on the lower template (21). Guide plates (32) are slidably arranged in the guide grooves (31). A second compression spring (33) is installed between the bottom of the guide plate (32) and the guide groove (31). One end of the second compression spring (33) is connected to the guide plate (32), and the other end is connected to the guide groove (31).

4. The sheet metal processing stamping die according to claim 1, characterized in that: The transmission component includes a gear (41), a rack (42), a push slope (43) and a tension spring (44). The gear (41) is fixedly arranged on the punching head (7). The rack (42) is slidably arranged on the upper template (11) in the left-right direction. The tension spring (44) is arranged between the rack (42) and the upper template (11). The slope is formed on the pressing plate (112) and contacts the rack (42).

5. The sheet metal processing stamping die according to claim 1, wherein: An installation groove (113) is provided on the mounting plate. The installation groove (113) is detachably arranged on the pressing plate (112). The punching head (7) is rotatably arranged in the installation groove (113). A limiting ring (114) is arranged at the upper end of the installation groove (113). An annular protrusion (115) is arranged at the end of the punching head (7). The annular protrusion (115) is adapted to the annular block.

6. The sheet metal processing stamping die according to claim 1, characterized in that: A limiting groove (116) is formed in the fixed block (111), and the mounting plate is arranged to slide up and down in the limiting groove (116). A limiting spring (117) is arranged between the top of the mounting plate and the limiting groove (116).

7. The sheet metal processing stamping die according to claim 6, characterized in that: The force for compressing the limiting spring (117) is greater than the force required for bending the sheet material.

8. The sheet metal processing stamping die according to claim 1, characterized in that: The pressing plate (112) is fixedly arranged on the upper mounting plate (1) through bolts, and the cushion block (211) is fixedly arranged on the lower mounting plate (2) through bolts. A plurality of fixing grooves are arranged on both the upper mounting plate (1) and the lower mounting plate (2).

9. The sheet metal processing stamping die according to claim 1, wherein: A material receiving box (5) is arranged on the cushion block (211), and the material receiving box (5) is located below the through hole.

10. The sheet metal processing stamping die according to any one of claims 1-9, characterized in that: At least two chamfering knives (6) are arranged on each punching head (7), and the chamfering knives (6) are evenly arranged along the circumferential direction of the punching head (7).

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