Stamping die for U-shaped part

Abstract

The invention relates to the technical field of machining, and discloses a U-shaped part stamping die which comprises a stamping mechanism, the stamping mechanism comprises a supporting frame, the outer wall of the supporting frame is fixedly connected with a first motor, the output end of the first motor is fixedly connected with a rotating shaft, and the output end of the first motor is provided with an adjusting mechanism. A first hydraulic rod is fixedly connected to the outer wall of the supporting frame, a first fixing frame is fixedly connected to the outer wall of the supporting frame, a connecting plate is fixedly connected to the end, away from the supporting frame, of the first fixing frame, and a second hydraulic rod is fixedly connected to the outer wall of the top of the connecting plate. After parts of different thicknesses and materials are clamped, fixed, punched and positioned through the adjusting mechanism, the auxiliary mechanism is used for conducting secondary extrusion on the punched and formed parts, and then the size precision of the parts is improved.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, in particular to a stamping die for a U-shaped part. Background Art

[0002] U-shaped parts stamping die is a kind of die widely used in the field of metal processing. It is mainly used to make the metal sheet undergo plastic deformation in the die through the stamping process, and finally form the required U-shaped parts. U-shaped parts are widely used in automobile, home appliance, construction and other industries. They have the advantages of simple structure, high production efficiency and low cost.

[0003] The patent application with application number CN201910461067.8 discloses a stamping die for a U-shaped part. The blank of the U-shaped part is placed on the lower die, the blank is positioned on the stamping groove by a positioning block, and the upper die is controlled to stamp the blank of the U-shaped part into the stamping groove to obtain a stamped U-shaped part.

[0004] In summary, when U-shaped stamping is performed on parts of different thicknesses and materials, due to the inherent elastic properties of metal materials, the parts after stamping are prone to springback, which may cause the dimensional accuracy of the parts to fail to meet the design requirements.

[0005] To this end, we proposed a stamping die for U-shaped parts. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a stamping die for a U-shaped part to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a stamping die for a U-shaped part, comprising a stamping mechanism, the stamping mechanism comprising a support frame, the outer wall of the support frame is fixedly connected to a first motor, the output end of the first motor is fixedly connected to a rotating shaft, the output end of the first motor is provided with an adjustment mechanism, the outer wall of the support frame is fixedly connected to a first hydraulic rod, the outer wall of the support frame is fixedly connected to a first fixing frame, the end of the first fixing frame away from the support frame is fixedly connected to a connecting plate, the top outer wall of the connecting plate is fixedly connected to a second hydraulic rod, the output end of the second hydraulic rod passes through the connecting plate and is fixedly connected to a stamping template, and also includes: The auxiliary mechanism comprises an extrusion plate arranged inside the supporting frame, the outer wall of the extrusion plate on one side close to the first hydraulic rod is rotatably connected to a fixed block through a rotating shaft, the fixed block is fixedly connected to the fixed block at one end away from the extrusion plate, the outer wall of the fixed block on one side close to the extrusion plate is fixedly connected to a second fixed frame, the inner wall of the second fixed frame is fixedly connected to a third fixed shaft, the outer surface of the third fixed shaft is movably sleeved with a sliding block, the inner wall of the sliding block is rotatably connected to a second rotating rod through a rotating shaft, the end of the second rotating rod away from the sliding block is rotatably connected to the extrusion plate, the top outer wall of the sliding block is fixedly connected to a third spring, the end of the third spring away from the sliding block is fixedly connected to the second fixed frame, the third spring is used for resetting the extrusion plate, and the third fixed shaft is used for improving the stability of the sliding block during movement.

[0008] According to the above technical solution, the inner wall of the extrusion plate is rotatably connected to the re-pressing plate via a rotating shaft, and the outer wall of the re-pressing plate is fixedly connected to the connecting shaft. The re-pressing plate is used to perform secondary extrusion on the stamped parts.

[0009] According to the above technical solution, the inner wall of the extrusion plate on one side away from the fixed block is rotatably connected to a dual-axis motor through a rotating shaft, the output end of the dual-axis motor is fixedly connected to a rotating frame, the connecting shaft passes through the rotating frame and is fixedly connected to a second elastic component, the second elastic component is fixedly connected to the rotating frame on the side close to the pressure-compensating plate, and the second elastic component is used for resetting the pressure-compensating plate.

[0010] According to the above technical solution, the adjustment mechanism includes a sliding frame slidably connected to the rotating shaft, the outer wall of the sliding frame on one side close to the first motor is fixedly connected to a first elastic component, the outer wall of the sliding frame on one side close to the first elastic component is fixedly connected to a gasket, and the first elastic component is deformed when the part is squeezed during stamping.

[0011] According to the above technical solution, a second motor is fixedly connected to the outer wall of the sliding frame on one side close to the gasket, the output end of the second motor passes through the sliding frame and is fixedly connected to the flip frame, the inner wall of the flip frame is fixedly connected to the first telescopic rod, the output end of the first telescopic rod is fixedly connected to the clamping plate, and the second motor is used to control the deflection angle of the flip frame.

[0012] According to the above technical solution, a first fixed shaft is fixedly connected to the bottom of the clamping plate, an end of the first fixed shaft away from the clamping plate passes through the flip frame and is fixedly connected to a first spring, an end of the first spring close to the clamping plate is fixedly connected to the flip frame, and the first fixed shaft is used to improve the stability of the clamping plate during movement.

[0013] According to the above technical solution, the top inner wall of the clamping plate is fixedly connected to the second telescopic rod, the output end of the second telescopic rod is fixedly connected to the adjusting plate, the top inner wall of the adjusting plate is rotatably connected to the first rotating rod via a rotating shaft, the end of the first rotating rod away from the adjusting plate is rotatably connected to the adjusting block via a rotating shaft, and the adjusting plate squeezes the adjusting block via the first rotating rod.

[0014] According to the above technical solution, a second fixed shaft is fixedly connected to the top of the clamping plate, the adjusting block is movably sleeved on the outer surface of the second fixed shaft, a second spring is fixedly connected to the top of the adjusting block, one end of the second spring away from the adjusting block is fixedly connected to the second fixed shaft, the second spring is used to assist the adjusting block in completing resetting, and the second fixed shaft is used to limit the sliding distance of the adjusting block.

[0015] Compared with the prior art, the present invention provides a stamping die for a U-shaped part, which has the following beneficial effects: 1. The present invention provides a stamping die for U-shaped parts. When U-shaped stamping is performed on parts of different thicknesses and materials, the parts of different thicknesses and materials are clamped and fixed by an adjusting mechanism and the stamping is positioned. Then, the stamped parts are secondary extruded by an auxiliary mechanism, thereby improving the dimensional accuracy of the parts.

[0016] 2. The present invention sets an adjustment mechanism. During the parts processing process, when the parts need to be clamped and fixed, the first telescopic rod pushes the clamping plate to move toward the sliding frame, and the two ends of the parts are clamped and fixed by the clamping plate and the gasket. After the positioning adjustment is completed, the second motor drives the flip frame to flip 90° to the side away from the parts, so that the clamping plate no longer applies an extrusion force to the parts, thereby avoiding interference such as position offset and uneven stamping deformation caused by the clamping plate during the part stamping operation.

[0017] 3. The present invention sets an auxiliary mechanism. When the U-shaped stamping is performed on the parts, the second hydraulic rod pushes the stamping template to extrude the parts. The parts are deformed by force during the stamping. When the pressure is continuously pressed down, the extrusion plate is extruded. The extrusion plate pushes the sliding block to slide down along the third fixed axis through the second rotating rod, stretching the third spring. At this time, the first hydraulic rod is started to push the fixed block, so that the extrusion plate extrude the two sides of the U-shaped parts, reducing the possibility of rebound of the parts after stamping, thereby ensuring the stamping quality.

[0018] 4. The present invention sets a dual-axis motor and a re-pressing plate. When the extrusion plate extrude both sides of the part, the dual-axis motor causes the rotating frame to flip. The rotating frame causes the re-pressing plate to extrude one side of the part through the second elastic component, thereby improving the forming degree of both sides of the U-shaped part and avoiding the rebound phenomenon of the part after stamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall front structure of the present invention; Figure 2 It is a schematic diagram of the structure of the punching mechanism of the present invention; Figure 3 It is a schematic diagram of the overall front cross-sectional structure of the present invention; Figure 4 The structure of the regulating mechanism of the present invention is shown in FIG. Figure 1 ; Figure 5 The structure of the regulating mechanism of the present invention is shown in FIG. Figure 2 ; Figure 6 The auxiliary mechanism structure of the present invention is shown in FIG. Figure 1 ; Figure 7 The auxiliary mechanism structure of the present invention is shown in FIG. Figure 2 ; Figure 8 For the present invention Figure 3 Schematic diagram of the enlarged structure of A.

[0020] In the figure: 1, stamping mechanism; 101, support frame; 102, first motor; 103, rotating shaft; 104, first hydraulic rod; 105, first fixed frame; 106, connecting plate; 107, second hydraulic rod; 108, stamping template; 2, adjustment mechanism; 201, sliding frame; 202, first elastic component; 203, gasket; 204, second motor; 205, turning frame; 206, first telescopic rod; 207, clamping plate; 208, second telescopic rod; 209, first fixed shaft ; 210, first spring; 211, second fixed axis; 212, adjustment plate; 213, first rotating rod; 214, adjustment block; 215, second spring; 3, auxiliary mechanism; 301, extrusion plate; 302, fixed block; 303, second fixed frame; 304, third fixed axis; 305, second rotating rod; 306, sliding block; 307, third spring; 308, dual-axis motor; 309, rotating frame; 310, re-pressure plate; 311, connecting shaft; 312, second elastic component. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Example 1: See Figure 1-Figure 5 The present invention provides a technical solution: a stamping die for a U-shaped part, comprising a stamping mechanism 1, the stamping mechanism 1 comprising a support frame 101, the outer wall of the support frame 101 is fixedly connected to a first motor 102, the output end of the first motor 102 is fixedly connected to a rotating shaft 103, the output end of the first motor 102 is provided with an adjustment mechanism 2, the outer wall of the support frame 101 is fixedly connected to a first hydraulic rod 104, the outer wall of the support frame 101 is fixedly connected to a first fixed frame 105, the end of the first fixed frame 105 away from the support frame 101 is fixedly connected to a connecting plate 106, the top outer wall of the connecting plate 106 is fixedly connected to a second hydraulic rod 107, the output end of the second hydraulic rod 107 passes through the connecting plate 106 and is fixedly connected to a stamping template 108, and also includes: The auxiliary mechanism 3 includes an extrusion plate 301 arranged inside the support frame 101, an outer wall of the extrusion plate 301 close to the first hydraulic rod 104 is rotatably connected to a fixed block 302 through a rotating shaft, an end of the fixed block 302 away from the extrusion plate 301 is fixedly connected to the fixed block 302, an outer wall of the fixed block 302 close to the extrusion plate 301 is fixedly connected to a second fixed frame 303, an inner wall of the second fixed frame 303 is fixedly connected to a third fixed shaft 304, and an outer surface of the third fixed shaft 304 is movable The movable sleeve is connected with a sliding block 306, and the inner wall of the sliding block 306 is rotatably connected with a second rotating rod 305 through a rotating shaft. The end of the second rotating rod 305 away from the sliding block 306 is rotatably connected to the extrusion plate 301. The top outer wall of the sliding block 306 is fixedly connected with a third spring 307, and the end of the third spring 307 away from the sliding block 306 is fixedly connected to the second fixed frame 303. The third spring 307 is used to reset the extrusion plate 301, and the third fixed shaft 304 is used to increase the movement of the sliding block 306. The stability of the process, when performing the U-shaped stamping operation of the part, first start the first motor 102, the first motor 102 adjusts the relative position between the adjustment mechanism 2 through the rotating shaft 103, and then accurately adjusts the position of the part and completes the positioning, after the part positioning is completed, turn on the second hydraulic rod 107, push the stamping template 108 to move toward the part, the stamping template 108 then extrude the part, during the extrusion process, the part is deformed by force, as the stamping template 108 continues to press down, the part will cause extrusion to the extrusion plate 301, after the extrusion plate 301 is stressed, the second rotating rod 305 applies pressure to the sliding block 306, causing the sliding block 306 to slide along the third fixed axis 304 toward the bottom of the support frame 101, stretching the third spring 307, at this time, start the first hydraulic rod 104 to push the fixed block 302, so that the extrusion plate 301 produces an extrusion force on the outer walls on both sides of the U-shaped part, effectively reducing the possibility of rebound of the part after stamping, and ensuring the stamping quality.

[0025] The adjusting mechanism 2 includes a sliding frame 201 which is slidably connected to the rotating shaft 103, and a first elastic component 202 is fixedly connected to an outer wall of the sliding frame 201 on one side close to the first motor 102, and a gasket 203 is fixedly connected to an outer wall of the sliding frame 201 on one side close to the first elastic component 202. The first motor 102 is started, and the motor drives the rotating shaft 103 to operate, so that the sliding frame 201 is slidably adjusted according to the length of the part. After adjustment, the gasket 203 is used to support both ends of the part. When the stamping template 108 performs an extrusion operation on the part, the deformed part will squeeze the first elastic component 202, and the first elastic component 202 will be deformed after being compressed, thereby buffering the force and preventing the sliding frame 201 from damaging the part.

[0026] The outer wall of the sliding frame 201 near the gasket 203 is fixedly connected to a second motor 204, the output end of the second motor 204 passes through the sliding frame 201 and is fixedly connected to the flip frame 205, the inner wall of the flip frame 205 is fixedly connected to a first telescopic rod 206, the output end of the first telescopic rod 206 is fixedly connected to a clamping plate 207, the second motor 204 is used to control the deflection angle of the flip frame 205, the bottom of the clamping plate 207 is fixedly connected to a first fixed shaft 209, the end of the first fixed shaft 209 away from the clamping plate 207 passes through the flip frame 205 and is fixedly connected to a first spring 210, and the end of the first spring 210 close to the clamping plate 207 is fixed to the flip frame 205 is fixedly connected, and the first fixed axis 209 is used to improve the stability of the clamping plate 207 during movement. When the part needs to be clamped and fixed, the first telescopic rod 206 is started to push the clamping plate 207 to move toward the sliding frame 201, and the clamping plate 207 and the gasket 203 are used to firmly clamp the two ends of the part, so that the part can be conveniently positioned and adjusted by the first motor 102. After the positioning and adjustment are completed, the second motor 204 is turned on to drive the flip frame 205 to flip 90° to the side away from the part, so that the clamping plate 207 no longer squeezes the part, thereby reducing the interference of the clamping plate 207 on the part during the part stamping operation.

[0027] A second telescopic rod 208 is fixedly connected to the top inner wall of the clamping plate 207, and an output end of the second telescopic rod 208 is fixedly connected to an adjusting plate 212. The top inner wall of the adjusting plate 212 is rotatably connected to a first rotating rod 213 via a rotating shaft, and an end of the first rotating rod 213 away from the adjusting plate 212 is rotatably connected to an adjusting block 214 via a rotating shaft. After the clamping plate 207 completes the clamping and fixing of the part, the second telescopic rod 208 is started to control the adjusting plate 212 to fine-tune the position of the part, thereby improving the position accuracy of the part during stamping. At this time, the second telescopic rod 208 pushes the adjusting plate 212, and the adjusting plate 212 applies pressure to the adjusting block 214 through the first rotating rod 213.

[0028] A second fixed shaft 211 is fixedly connected to the top of the clamping plate 207, and an adjusting block 214 is movably sleeved on the outer surface of the second fixed shaft 211. A second spring 215 is fixedly connected to the top of the adjusting block 214. One end of the second spring 215 away from the adjusting block 214 is fixedly connected to the second fixed shaft 211. The second spring 215 is used to assist the adjusting block 214 in completing resetting. The second fixed shaft 211 is used to limit the sliding distance of the adjusting block 214. The adjusting block 214, with the help of the first rotating rod 213, can maintain the same sliding distance of the adjusting plates 212 on both sides, so that the position of the part on the gasket 203 can be relatively centered, thereby improving the effect of the part stamping process.

[0029] Example 2: Please refer to Figure 6-Figure 8On the basis of the first embodiment, the present invention provides a technical solution: the inner wall of the extrusion plate 301 is rotatably connected to the re-pressing plate 310 through a rotating shaft, the outer wall of the re-pressing plate 310 is fixedly connected to a connecting shaft 311, the re-pressing plate 310 is used to perform secondary extrusion on the stamped parts, the inner wall of the extrusion plate 301 on the side away from the fixed block 302 is rotatably connected to a dual-axis motor 308 through a rotating shaft, the output end of the dual-axis motor 308 is fixedly connected to a rotating frame 309, the connecting shaft 311 passes through the rotating frame 309 and is fixedly connected to a second elastic member. The second elastic component 312 is fixedly connected to the rotating frame 309 on one side of the second elastic component 312 close to the second pressure plate 310. The second elastic component 312 is used to reset the second pressure plate 310. When the extrusion plate 301 performs an extrusion operation on both sides of the part, the dual-axis motor 308 starts to drive the rotating frame 309 to flip. The flipped rotating frame 309 pushes the second elastic component 312 to squeeze the second pressure plate 310 toward one side of the part, thereby effectively improving the forming effect on both sides of the U-shaped part and preventing the rebound problem of the part after stamping.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, 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 a U-shaped part, comprising a stamping mechanism (1), the stamping mechanism (1) comprising a support frame (101), the outer wall of the support frame (101) being fixedly connected to a first motor (102), the output end of the first motor (102) being fixedly connected to a rotating shaft (103), the output end of the first motor (102) being provided with an adjustment mechanism (2), the outer wall of the support frame (101) being fixedly connected to a first hydraulic rod (104), the outer wall of the support frame (101) being fixedly connected to a first fixed frame (105), one end of the first fixed frame (105) away from the support frame (101) being fixedly connected to a connecting plate (106), the top outer wall of the connecting plate (106) being fixedly connected to a second hydraulic rod (107), the output end of the second hydraulic rod (107) passing through the connecting plate (106) and being fixedly connected to a stamping template (108), characterized in that: include: The auxiliary mechanism (3) comprises an extrusion plate (301) arranged inside the support frame (101); an outer wall of the extrusion plate (301) on one side close to the first hydraulic rod (104) is rotatably connected to a fixed block (302) via a rotating shaft; an end of the fixed block (302) away from the extrusion plate (301) is fixedly connected to the fixed block (302); an outer wall of the fixed block (302) on one side close to the extrusion plate (301) is fixedly connected to a second fixed frame (303); an inner wall of the second fixed frame (303) is fixedly connected to a third fixed shaft (304); an outer surface of the third fixed shaft (304) is movably sleeved A sliding block (306) is provided, wherein the inner wall of the sliding block (306) is rotatably connected to a second rotating rod (305) via a rotating shaft, and one end of the second rotating rod (305) away from the sliding block (306) is rotatably connected to an extrusion plate (301), and a third spring (307) is fixedly connected to the top outer wall of the sliding block (306), and one end of the third spring (307) away from the sliding block (306) is fixedly connected to a second fixed frame (303), and the third spring (307) is used for resetting the extrusion plate (301), and the third fixed shaft (304) is used for improving the stability of the sliding block (306) during movement.

2. A stamping die for a U-shaped part according to claim 1, characterized in that: The inner wall of the extrusion plate (301) is rotatably connected to a re-pressing plate (310) via a rotating shaft, and the outer wall of the re-pressing plate (310) is fixedly connected to a connecting shaft (311). The re-pressing plate (310) is used to perform secondary extrusion on the stamped parts.

3. A stamping die for a U-shaped part according to claim 2, characterized in that: The inner wall of the extrusion plate (301) at one side away from the fixed block (302) is rotatably connected to a dual-axis motor (308) via a rotating shaft; the output end of the dual-axis motor (308) is fixedly connected to a rotating frame (309); the connecting shaft (311) passes through the rotating frame (309) and is fixedly connected to a second elastic component (312); the second elastic component (312) is fixedly connected to the rotating frame (309) at a side close to the re-pressing plate (310); and the second elastic component (312) is used for resetting the re-pressing plate (310).

4. The stamping die for a U-shaped part according to claim 1, characterized in that: The adjustment mechanism (2) comprises a sliding frame (201) slidably connected to the rotating shaft (103); a first elastic component (202) is fixedly connected to an outer wall of a side of the sliding frame (201) close to the first motor (102); a gasket (203) is fixedly connected to an outer wall of a side of the sliding frame (201) close to the first elastic component (202); and the first elastic component (202) is deformed when the part is pressed.

5. A stamping die for a U-shaped part according to claim 4, characterized in that: A second motor (204) is fixedly connected to an outer wall of one side of the sliding frame (201) close to the gasket (203); an output end of the second motor (204) passes through the sliding frame (201) and is fixedly connected to a flip frame (205); a first telescopic rod (206) is fixedly connected to an inner wall of the flip frame (205); an output end of the first telescopic rod (206) is fixedly connected to a clamping plate (207); and the second motor (204) is used to control a deflection angle of the flip frame (205).

6. A stamping die for a U-shaped part according to claim 5, characterized in that: A first fixed shaft (209) is fixedly connected to the bottom of the clamping plate (207); an end of the first fixed shaft (209) away from the clamping plate (207) passes through the flip frame (205) and is fixedly connected to a first spring (210); an end of the first spring (210) close to the clamping plate (207) is fixedly connected to the flip frame (205); the first fixed shaft (209) is used to improve the stability of the clamping plate (207) during movement.

7. A stamping die for a U-shaped part according to claim 6, characterized in that: The top inner wall of the clamping plate (207) is fixedly connected to a second telescopic rod (208); the output end of the second telescopic rod (208) is fixedly connected to an adjustment plate (212); the top inner wall of the adjustment plate (212) is rotatably connected to a first rotating rod (213) via a rotating shaft; one end of the first rotating rod (213) away from the adjustment plate (212) is rotatably connected to an adjustment block (214) via a rotating shaft; the adjustment plate (212) presses the adjustment block (214) via the first rotating rod (213).

8. The stamping die for a U-shaped part according to claim 7, characterized in that: The top of the clamping plate (207) is fixedly connected to a second fixed shaft (211); the adjusting block (214) is movably sleeved on the outer surface of the second fixed shaft (211); the top of the adjusting block (214) is fixedly connected to a second spring (215); one end of the second spring (215) away from the adjusting block (214) is fixedly connected to the second fixed shaft (211); the second spring (215) is used to assist the adjusting block (214) in completing resetting; and the second fixed shaft (211) is used to limit the sliding distance of the adjusting block (214).

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