Secondary drawing high-strength steel die

Abstract

The utility model belongs to the technical field of drawing dies, and particularly relates to a secondary drawing high-strength steel die which comprises an upper die assembly and a lower die assembly. The upper die assembly is arranged at the upper end of the lower die assembly, and a gap for containing a workpiece is formed between the upper die assembly and the lower die assembly. The lower die assembly comprises a lower die base, a positioning plate and an elastic reset piece, and the positioning plate is arranged above the lower die base. The upper end of the lower die base extends upwards to be provided with two guide columns, the positioning plate is provided with two sliding grooves corresponding to the guide columns, the positioning plate and the guide columns are in sliding connection through the sliding grooves, the elastic reset piece is arranged between the positioning plate and the lower die base, one end of the elastic reset piece is connected with the positioning plate, and the other end of the elastic reset piece is connected with the lower die base. A first female die and a second female die are arranged at the upper end of the lower die base, and a first positioning groove corresponding to the first female die and a second positioning groove corresponding to the second female die are formed in the positioning plate.

Description

Technical Field

[0001] The utility model belongs to the technical field of drawing dies, in particular to a secondary drawing high-strength steel die. Background Art

[0002] The stamping of automobile shells requires multiple processes. The pre-process includes shearing, oiling, cutting and stretching, secondary stretching, tertiary stretching, quaternary stretching forming, and oiling; the post-process includes stretching, forming, flashing, pinholes, shaping, and center holes. Except for shearing and oiling, all other processes are completed by stamping; each process requires a punching machine of different sizes and a stamping worker. Since each process needs to be completed manually, human error occurs from time to time, deviations are easy to occur, work efficiency is low, and labor costs are getting higher and higher. In addition, each process uses a punching machine, which increases the machine investment cost and maintenance cost; at the same time, there are serious personal safety hazards. Utility Model Content

[0003] The utility model aims to provide a secondary drawing high-strength steel die, aiming to solve the technical problem that each process in the automobile shell stamping process in the prior art requires a punch press and a punching worker to operate.

[0004] To achieve the above-mentioned purpose, the utility model provides a secondary drawing high-strength steel die, including an upper die assembly and a lower die assembly. The upper die assembly is arranged at the upper end of the lower die assembly, and a gap for placing a workpiece is provided between the upper die assembly and the lower die assembly. The lower die assembly includes a lower die seat, a positioning plate and an elastic reset member, and the positioning plate is arranged above the lower die seat. The upper end of the lower die seat is provided with two guide columns extending upward, and the positioning plate is provided with two slide grooves corresponding to the guide columns. The positioning plate and the guide columns are slidably connected through the slide grooves. The elastic reset member is arranged between the positioning plate and the lower die seat, and one end of the elastic reset member is connected to the positioning plate, and the other end is connected to the lower die seat. The upper end of the lower die seat is provided with a first die and a second die, and the positioning plate is provided with a first positioning groove corresponding to the first die and a second positioning groove corresponding to the second die. The upper die assembly includes an upper die seat, a first punch corresponding to the first die, and a second punch corresponding to the second die. The upper die base is provided with two through grooves corresponding to the guide columns. The upper die base and the guide columns are slidably connected through the through grooves. The first punch is arranged at the lower end of the upper die base and located above the first die. The second punch is arranged at the lower end of the upper die base and located above the second die.

[0005] Furthermore, two avoidance grooves are provided on the lower die base, and the two avoidance grooves are respectively located below the two elastic return members, one end of the elastic return member is connected to the avoidance groove, and the other end is connected to the bottom of the positioning plate.

[0006] Furthermore, the upper die assembly further comprises a pressure ring plate, on which two motion grooves corresponding to the guide pillars are arranged, and the pressure ring plate and the guide pillars are slidably connected via the motion grooves. The pressure ring plate is further provided with a first through hole for the first punch to pass through and a second through hole for the second punch to pass through, the first through hole being arranged above the first positioning groove, and the second through hole being arranged above the second positioning groove.

[0007] Furthermore, the positioning plate is provided with a first positioning block extending in the direction of the first positioning groove, and the positioning plate is provided with a second positioning block extending in the direction of the second positioning groove. First edge pressing blocks corresponding to the first positioning blocks are provided on both sides of the first through hole, and second edge pressing blocks corresponding to the second positioning blocks are provided on both sides of the second through hole.

[0008] Furthermore, two columns are provided on the upper surface of the pressure ring plate, and a limit block is provided on the upper end of the column, and the length of the limit block is greater than the shaft diameter of the column. A limit part is also provided on the upper die seat, and the limit part includes a limit groove and an opening groove, the opening groove is connected to the limit groove, the groove diameter of the opening groove is greater than the shaft diameter of the column and less than the length of the limit block, the limit block is slidably connected in the limit groove, and the column is slidably connected in the opening groove.

[0009] Furthermore, the lower die base is provided with a first module and a second module, which are detachably arranged on the lower die base. The first concave die is arranged on the first module, the second concave die is arranged on the second module, and the first convex die and the second convex die are detachably arranged on the upper die base.

[0010] The above one or more technical solutions in the secondary drawing high-strength steel mold provided by the embodiment of the utility model have at least one of the following technical effects: a first die and a second die are provided on the lower die base, and the workpiece passes through the first die and the second die in sequence, and the workpiece is placed in the first positioning groove, and the first positioning groove positions the workpiece, and then the upper die assembly moves toward the lower die assembly, and the positioning plate is squeezed to make the positioning plate fit with the lower die base, and the first punch squeezes the workpiece in the first positioning groove, and cooperates with the first die to make the workpiece perform the first drawing, and then the upper die assembly moves in the direction away from the lower die base, and then the positioning plate drives the workpiece out of the die under the action of the elastic reset part, and the worker moves the workpiece on the die to the second positioning groove, and adds a new workpiece to the first positioning groove, and repeats the above steps, so that one punch press can complete multiple drawing, save time and labor costs, and improve processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0012] Figure 1 A cross-sectional view of a secondary drawing high-strength steel die provided in an embodiment of the utility model.

[0013] Among them, the reference numerals in the figure are: 100, upper die assembly; 110, upper die seat; 111, first punch; 112, second punch; 113, through groove; 114, limit portion; 115, limit groove; 116, opening groove; 120, pressure ring plate; 121, movement groove; 122, first through hole; 123, second through hole; 124, first edge pressing block; 125, second edge pressing block; 126, column; 12 7. Limit block; 200. Lower die assembly; 210. Lower die seat; 211. First die; 212. Second die; 220. Positioning plate; 221. First positioning groove; 222. Second positioning groove; 223. Slide; 224. First positioning block; 225. Second positioning block; 230. Elastic reset member; 231. Avoidance groove; 240. Guide column; 250. First module; 260. Second module; DETAILED DESCRIPTION

[0014] The embodiments of the present invention are described in detail below, and 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 embodiments of the present invention, and should not be construed as limiting the present invention.

[0015] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0016] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0017] In the embodiments of 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 embodiments of the present invention can be understood according to specific circumstances.

[0018] In one embodiment of the present invention, reference Figure 1As shown, a secondary drawing high-strength steel die is provided, comprising an upper die assembly 100 and a lower die assembly 200. The upper die assembly 100 is arranged at the upper end of the lower die assembly 200, and a gap for placing a workpiece is provided between the upper die assembly 100 and the lower die assembly 200. The lower die assembly 200 comprises a lower die base 210, a positioning plate 220 and an elastic reset member 230, wherein the positioning plate 220 is arranged above the lower die base 210. Two guide posts 240 are extended upward from the upper end of the lower die base 210, and two slide grooves 223 corresponding to the guide posts 240 are provided on the positioning plate 220, and the positioning plate 220 and the guide posts 240 are slidably connected through the slide grooves 223, and the elastic reset member 230 is arranged between the positioning plate 220 and the lower die base 210, and one end of the elastic reset member 230 is connected to the positioning plate 220, and the other end is connected to the lower die base 210. The upper end of the lower die base 210 is provided with a first die 211 and a second die 212, and the positioning plate 220 is provided with a first positioning groove 221 corresponding to the first die 211 and a second positioning groove 222 corresponding to the second die 212. The upper die assembly 100 includes an upper die base 110, a first punch 111 corresponding to the first die 211, and a second punch 112 corresponding to the second die 212. The upper die base 110 is provided with two through grooves 113 corresponding to the guide column 240, and the upper die base 110 and the guide column 240 are slidably connected through the through grooves 113. The first punch 111 is provided at the lower end of the upper die base 110 and is located above the first die 211, and the second punch 112 is provided at the lower end of the upper die base 110 and is located above the second die 212. In this embodiment, a first die 211 and a second die 212 are provided on the lower die base 210. The workpiece passes through the first die 211 and the second die 212 in sequence, and the workpiece is placed in the first positioning groove 221. The first positioning groove 221 positions the workpiece, and then the upper die assembly 100 moves toward the lower die assembly 200, squeezing the positioning plate 220 so that the positioning plate 220 fits with the lower die base 210. The first punch 111 squeezes the workpiece in the first positioning groove 221, and cooperates with the first die 211 to make the workpiece perform the first drawing. Then the upper die assembly 100 moves in the direction away from the lower die base 210. Then, under the action of the elastic reset member 230, the positioning plate 220 drives the workpiece out of the die, and the worker moves the workpiece on the die to the second positioning groove 222. A new workpiece is added to the first positioning groove 221, and the above steps are repeated, so that one punch press can complete multiple drawings, saving time and labor costs and improving processing accuracy.

[0019] More specifically, refer to Figure 1 As shown, the lower die holder 210 may be provided with more concave dies, and correspondingly, the upper die holder 110 may also be provided with a corresponding number of convex dies.

[0020] Specifically, refer to Figure 1As shown, two avoidance grooves 231 are also provided on the lower die seat 210, and the two avoidance grooves 231 are respectively located below the two elastic reset members 230, one end of the elastic reset member 230 is connected in the avoidance groove 231, and the other end is connected to the bottom of the positioning plate 220. In this embodiment, one end of the elastic reset member 230 is set in the avoidance groove 231, when the positioning plate 220 is squeezed by the upper die assembly 100, the elastic reset member 230 is deformed, so that the elastic reset member 230 is retracted into the avoidance groove 231, and the positioning plate 220 is in close contact with the lower die seat 210. When the upper die assembly 100 is released, the positioning plate 220 is then driven by the elastic reset member 230 to separate the workpiece from the concave die, which is convenient for material removal, and avoids the positioning plate 220 and the lower die seat 210 being unable to abut due to the elastic reset member 230, which affects the drawing quality.

[0021] Specifically, refer to Figure 1 As shown, the upper die assembly 100 also includes a pressure ring plate 120, on which two motion grooves 121 corresponding to the guide column 240 are provided, and the pressure ring plate 120 and the guide column 240 are slidably connected through the motion grooves 121. The pressure ring plate 120 is also provided with a first through hole 122 for the first punch 111 to pass through and a second through hole 123 for the second punch 112 to pass through. The first through hole 122 is arranged above the first positioning groove 221, and the second through hole 123 is arranged above the second positioning groove 222. In this embodiment, the pressure ring plate 120 is used to press the workpiece in the first positioning groove 221 and the second positioning groove 222, and then the first punch 111 passes through the first through hole 122 to cooperate with the first die 211 to draw the workpiece, and the second punch 112 passes through the second through hole 123 to cooperate with the second die 212 to draw the workpiece, so as to avoid the workpiece from running off and affecting the drawing effect. At the same time, the edge pressing also prevents the workpiece from sticking to the punch, which is convenient for material unloading.

[0022] Specifically, refer to Figure 1 As shown, the positioning plate 220 is provided with a first positioning block 224 extending in the direction of the first positioning groove 221, and the positioning plate 220 is provided with a second positioning block 225 extending in the direction of the second positioning groove 222. First edge clamping blocks 124 corresponding to the first positioning block 224 are provided on both sides of the first through hole 122, and second edge clamping blocks 125 corresponding to the second positioning block 225 are provided on both sides of the second through hole 123. In this embodiment, the first positioning block 224 and the first edge clamping block 124 cooperate with each other to position the workpiece, and the second positioning block 225 and the second edge clamping block 125 cooperate with each other to position the workpiece, so as to avoid the workpiece from running off and affecting the drawing effect.

[0023] Specifically, refer to Figure 1As shown, the upper surface of the pressure ring plate 120 is also provided with two columns 126, and the upper ends of the columns 126 are also provided with a limit block 127, and the length of the limit block 127 is greater than the shaft diameter of the column 126. The upper die seat 110 is also provided with a limit portion 114, and the limit portion 114 includes a limit groove 115 and an open groove 116, and the open groove 116 is connected to the limit groove 115, and the groove diameter of the open groove 116 is greater than the shaft diameter of the column 126 and less than the length of the limit block 127, and the limit block 127 is slidably connected in the limit groove 115, and the column 126 is slidably connected in the open groove 116. In this embodiment, the limit block 127 slides in the limit groove 115, and the column 126 slides in the open groove 116, so that when the upper die seat 110 rises to a certain height, the limit block 127 pulls the edge pressing block to lift, and there is no need to manually pull the edge pressing block, and the operation is simpler and faster.

[0024] Specifically, refer to Figure 1 As shown, the lower die base 210 is further provided with a first module 250 and a second module 260, and the first module 250 and the second module 260 are detachably arranged on the lower die base 210. The first die 211 is arranged on the first module 250, the second die 212 is arranged on the second module 260, and the first punch 111 and the second punch 112 are both detachably arranged on the upper die base 110. In this embodiment, different punches and die can be replaced according to different drawing shapes required by the workpiece, which is more convenient to use.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A secondary drawing high-strength steel die, comprising an upper die assembly and a lower die assembly; the upper die assembly is arranged at the upper end of the lower die assembly, and a gap for placing a workpiece is provided between the upper die assembly and the lower die assembly; characterized in that: The lower die assembly comprises a lower die seat, a positioning plate and an elastic return member, the positioning plate is arranged above the lower die seat; the upper end of the lower die seat is extended upwardly to be provided with two guide columns, the positioning plate is provided with two slide grooves corresponding to the guide columns, the positioning plate and the guide columns are slidably connected by the slide grooves, the elastic return member is arranged between the positioning plate and the lower die seat, and one end of the elastic return member is connected to the positioning plate, and the other end is connected to the lower die seat; the upper end of the lower die seat is provided with a first die and a second die, and the positioning plate is provided with a first positioning groove corresponding to the first die and a second positioning groove corresponding to the second die; the upper die assembly comprises an upper die seat, a first convex die corresponding to the first die and a second convex die corresponding to the second die; the upper die seat is provided with two through grooves corresponding to the guide columns, the upper die seat and the guide columns are slidably connected by the through grooves, the first convex die is arranged at the lower end of the upper die seat and is located above the first die, and the second convex die is arranged at the lower end of the upper die seat and is located above the second die.

2. The secondary drawing high-strength steel die according to claim 1, characterized in that: The lower die base is also provided with two avoidance grooves, which are respectively located below the two elastic return members. One end of the elastic return member is connected to the avoidance groove, and the other end is connected to the bottom of the positioning plate.

3. The secondary drawing high-strength steel die according to claim 1, characterized in that: The upper mold assembly also includes a pressure ring plate, which is provided with two moving grooves corresponding to the guide column, and the pressure ring plate and the guide column are slidably connected through the moving grooves; the pressure ring plate is also provided with a first through hole for the first punch to pass through and a second through hole for the second punch to pass through, the first through hole is arranged above the first positioning groove, and the second through hole is arranged above the second positioning groove.

4. The secondary drawing high-strength steel die according to claim 3, characterized in that: The positioning plate is extended in the direction of the first positioning groove and is provided with a first positioning block, and the positioning plate is extended in the direction of the second positioning groove and is provided with a second positioning block; first edge pressing blocks corresponding to the first positioning block are provided on both sides of the first through hole, and second edge pressing blocks corresponding to the second positioning block are provided on both sides of the second through hole.

5. The secondary drawing high-strength steel die according to claim 3, characterized in that: Two columns are also provided on the upper surface of the pressure ring plate, and a limit block is also provided at the upper end of the column, and the length of the limit block is greater than the axial diameter of the column; a limit part is also provided on the upper mold base, and the limit part includes a limit groove and an opening groove, the opening groove is connected to the limit groove, the groove diameter of the opening groove is greater than the axial diameter of the column and smaller than the length of the limit block, the limit block is slidably connected in the limit groove, and the column is slidably connected in the opening groove.

6. The secondary drawing high-strength steel die according to any one of claims 1 to 5, characterized in that: The lower die base is also provided with a first module and a second module, and the first module and the second module are detachably arranged on the lower die base; the first die is arranged on the first module, and the second die is arranged on the second module, and the first punch and the second punch are both detachably arranged on the upper die base.

Images