A concave sheet metal part shaping die

Abstract

The utility model relates to a kind of inner recessed sheet metal parts shaping die, including upper die plate and lower die holder, the upper die plate top is provided with upper die foot, and upper die foot top is provided with upper backing plate, and left and right two sides are symmetrically provided with vertical plate;The elastic positioning device is set in the upper die foot, and the lower end of the elastic positioning device is downwardly penetrated in the bottom of upper die plate below;The upper die plate bottom is provided with the upper knife block that can be up and down active, and the upper knife block top is provided with the downwardly penetrating top pressure hole;The lower end of the elastic positioning device is penetrated in the top pressure hole;The top of the lower die holder is provided with the lower die kernel fixedly connected therewith.This inner recessed sheet metal parts shaping die can realize the pre-positioning of the to-be-stamped plate material by upper knife block when closing mold;When opening mold, guide rod pushes down sheet metal parts, and elastic ejector pin pushes up sheet metal parts, so that the stripping effect of sheet metal parts is good, the processing quality and stripping effect are improved, and the processing efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile sheet metal processing, especially to a concave sheet metal part shaping die. BACKGROUND

[0002] Sheet metal parts for automobiles are important components of automobile bodies. Because the volume of the vehicle body is relatively large and the structure is relatively complex, the structural parts of the automobile body are combined and processed by a plurality of separately processed and manufactured parts.

[0003] Sheet metal parts on the automobile body are processed by stamping, and the sheet metal is cut into the corresponding size according to the requirements, and then placed on the stamping die to realize stretching, deformation and shaping after stamping. Some parts in the automobile sheet metal part have hollow structure or concave structure, and the sheet metal part and the forming part are easily adsorbed or attached to the cavity or forming end of the upper die or lower die after stamping, which is not convenient for demolding, and the existing die for processing the hollow or concave structure of the sheet metal part is not pre-positioned during stamping processing. When the upper die and the lower die are combined, the sheet to be stamped placed on the lower die is easy to deviate, which affects the product processing quality and quality. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide a concave sheet metal part shaping die which can improve the processing quality of sheet metal parts and make demolding more simple and convenient.

[0005] In order to solve the above technical problem, the utility model is realized by the following technical scheme:

[0006] A concave sheet metal part shaping die, comprising an upper die plate and a lower die seat corresponding to each other, the upper die plate top is provided with an upper die foot fixedly connected therewith, the upper die foot top is provided with an upper supporting plate fixedly connected therewith, and the left and right sides are symmetrically provided with vertical plates, the upper and lower ends of the vertical plates are fixedly connected together with the upper supporting plate and the upper die plate; the upper die foot is provided with an elastic positioning device, the lower end of the elastic positioning device penetrates downward below the bottom of the upper die plate; the bottom of the upper die plate is provided with an upper knife block capable of moving up and down, the bottom of the upper knife block is provided with a shaping cavity, and the top is provided with a top pressing hole penetrating downward through the shaping cavity; the top pressing hole corresponds to the elastic positioning device up and down and is sleeved and matched, and the lower end of the elastic positioning device penetrates in the top pressing hole; the top of the lower die seat is provided with a lower die core fixedly connected therewith, the top structure of the lower die core is consistent with the structure of the shaping cavity, and can be up and down butt joint matched.

[0007] Preferably, the upper die foot is provided with an upper and lower communication guide connecting hole, and the elastic positioning device is arranged in the guide connecting hole; the upper die plate is provided with a transition hole corresponding to the guide connecting hole up and down and matching in diameter, and the transition hole penetrates the upper and lower ends of the upper die plate.

[0008] Preferably, the elastic positioning device is composed of a nitrogen spring and a guide rod; the nitrogen spring is fixedly connected at the top to the upper supporting plate, and the top of the guide rod is fixedly connected with the lower end of the nitrogen spring.

[0009] Preferably, the bottom of the upper die plate is provided with an upper limiting column, and the top of the lower die seat is provided with a lower limiting column corresponding to the upper limiting column.

[0010] Preferably, the bottom of the upper die plate is provided with a guide sleeve fixedly connected thereto, the upper die plate is provided with guide holes corresponding to and communicating with the center guide holes of the guide sleeve, the guide holes and the guide holes correspondingly have guide columns inserted thereinto and slidingly fitted therewith, and the lower end of the guide column is fixed to the lower die seat; the bottom of the upper supporting plate is provided with a transition groove facilitating upward movement of the upper end of the guide column.

[0011] Preferably, the lower die core is provided with a pin hole penetrating through the top thereof upwardly, and the pin hole is provided with an elastic ejector pin.

[0012] Preferably, the upper knife block is movably hung below the bottom of the upper die plate through an equal-height bolt; the upper die leg is provided with an equal-height hole penetrating through the bottom of the upper die plate downwardly, and the equal-height bolt is arranged in the equal-height hole and fixedly connected with the top of the upper knife block at the lower end thereof through the upper die plate.

[0013] Preferably, the bottom of the upper die plate is provided with an upper centering groove in the center thereof, and the top of the upper knife block can be embedded in the upper centering groove; the top of the lower die seat is provided with a lower centering groove in the center thereof, and the bottom of the lower die core is embedded in the lower centering groove.

[0014] Compared with the prior art, the inner recessed sheet metal part shaping die has the advantages that: when the die is closed, the upper knife block can first abut against the to-be-stamped plate placed on the top of the lower die core, so that the to-be-stamped plate is pre-positioned, and the to-be-stamped plate is prevented from sliding and deviating during formal stamping; when the die is opened, the guide rod pushes the sheet metal part downwardly, and the elastic ejector pin pushes the sheet metal part upwardly, so that the sheet metal part is prevented from being adsorbed and attached to the upper knife block or the lower die core, the demolding effect of the sheet metal part is good, the processing quality and the demolding effect are improved, and the processing efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0016] Figure 1Is a concave sheet metal part shaping die three-dimensional structure schematic diagram of the utility model;

[0017] Figure 2 Is a concave sheet metal part shaping die overhead structure schematic diagram of the utility model;

[0018] Figure 3 Is Figure 2 Structure sectional view of A-A in the middle;

[0019] Figure 4 Is a concave sheet metal part shaping die local sectional structure schematic diagram of the utility model.

[0020] In the drawing: 1, upper supporting plate;11, vertical plate;111, transition groove;2, upper die plate;21, upper limiting column;22, guide sleeve;23, guide hole;24, upper centering groove;3, lower die base;31, lower limiting column;32, guide column;33, lower centering groove;4, upper die foot;41, guide connection hole;42, nitrogen gas spring;43, guide rod;44, equal height hole;45, equal height bolt;5, lower die core;51, pin hole;52, elastic ejector pin;6, upper cutter block;61, pressing hole. Specific implementation

[0021] In order to make the purpose, technical scheme and advantage of the utility model embodiment more clear, the technical scheme in the utility model embodiment will be described clearly and completely below by combining with the drawings in the utility model embodiment, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments. The components of the utility model embodiment described and shown in the drawing here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the application provided in the drawings is not intended to limit the scope of the application claimed, but merely represents selected embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the application. It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In the description of the embodiments of the application, it should be explained that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship of the product of the application when it is usually placed, which is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the application. In addition, the terms "first", "second" and the like are only used for differentiation, and cannot be understood as indicating or implying relative importance.

[0023] In addition, if the terms "horizontal", "vertical" and the like appear, it does not mean that the component must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure or component must be completely horizontal, but can be slightly inclined.

[0024] In the description of the embodiments of the application, "a plurality of" represents at least 2.

[0025] In the description of the embodiments of the application, it should be further explained that, unless otherwise explicitly specified and limited, if the terms "set", "install", "connect", "connect" appear, they should be understood in a broad sense, for example, they can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, or can be the communication between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0026] Embodiments

[0027] Please refer to the drawings in the description Figures 1 to 3 in the description Figures 1 to 3The diagram shows a concave sheet metal forming mold of this utility model, used for stamping and forming of hollow or concave parts in automotive sheet metal. It provides good forming effect and convenient demolding. In this embodiment, the concave sheet metal forming mold includes an upper template 2 and a lower mold base 3, corresponding to each other. An upper mold foot 4 is fixedly connected to the top of the upper template 2, and the upper mold foot 4 is bolted to the upper template 2. An upper support plate 1 is fixedly connected to the top of the upper mold foot 4, and the upper support plate 1 is bolted to the upper mold foot 4. The upper support plate 4 can be installed at the bottom of the upper pad of a hydraulic press. Two upright plates 11 are symmetrically arranged on the left and right sides of the upper mold foot 4. The upper and lower ends of the upright plates 11 are fixedly connected to the upper support plate 1 and the upper template 2 respectively, and are bolted together for easy assembly and disassembly. An elastic positioning device is provided inside the upper mold foot 4, with its lower end extending downwards through the bottom of the upper template 2. For convenient installation and movement of the elastic device on the upper mold foot 4 and the upper template 2, please refer to the appendix of the specification. Figure 3 and 4 As shown, the upper mold base 4 is provided with a guide connection hole 41 that is vertically connected, and the elastic positioning device is disposed in the guide connection hole 41; the upper template 2 is provided with a transition hole that corresponds vertically to the guide connection hole 41 and has a matching diameter, and the transition hole passes through the upper and lower ends of the upper template 2. Specifically, the elastic positioning device consists of a nitrogen spring 42 and a guide rod 43; the top of the nitrogen spring 42 is fixedly connected to the upper support plate 1, and the top of the guide rod 43 is fixedly connected to the lower end of the nitrogen spring 42. The guide rod 43 slides vertically with the guide connection hole 41 and the transition hole, and the lower end of the guide rod 43 extends downward below the bottom of the transition hole, and the guide rod 43 can move elastically up and down with the nitrogen spring 43; the bottom of the upper template 2 is provided with an upper blade block 6 that can move vertically, in order to ensure the upper blade... The positioning accuracy of block 6 and upper template 2 is as follows: The upper template 2 has an upper centering groove 24 at its bottom center, and the top of the upper cutting block 6 can be fitted into the upper centering groove 24. The bottom of the upper cutting block 6 has a shaping cavity, and the top has a pressing hole 61 that penetrates downwards through the shaping cavity. The pressing hole 61 corresponds vertically to and is sleeved with the elastic positioning device. The lower end of the elastic positioning device passes through the pressing hole 61. Specifically, the lower end of the guide rod 43 passes through the pressing hole 61, and the guide rod 43 and the pressing hole 61 slide vertically together. It should be noted that the lower end surface of the guide rod 43 matches the contour surface of the top of the shaping cavity. In the open mold state, the lower end surface of the guide rod 43 and the contour surface of the shaping cavity form an integral forming cavity. For easier movement of the upper cutting block 6 below the upper template 2, please refer to the appendix of the instruction manual. Figure 4As shown, the upper knife block 6 is movably hung below the bottom of the upper die plate 2 by means of the equal-height bolt 45; in order to facilitate the installation of the equal-height bolt 45, the upper die foot 4 is provided with the equal-height hole 44 penetrating through the bottom of the upper die plate 2 downwards, the equal-height bolt 45 is arranged in the equal-height hole 44, the equal-height hole 44 is a stepped hole, which is composed of a guiding and limiting hole and a guiding and connecting hole located above, the diameter of the guiding and limiting hole is larger than that of the guiding and connecting hole, the limiting cap at the top of the equal-height bolt 45 is matched with the diameter of the guiding and limiting hole, and the equal-height bolt 45 is in sliding fit with the guiding and connecting hole, so that the equal-height bolt 45 can be movably hung in the equal-height hole 44 and cannot fall off, the threaded end of the equal-height bolt 5 is fixedly connected with the top of the upper knife block 6 by penetrating through the upper die plate 2, and the threaded connection is achieved; the top of the lower die seat 3 is provided with the lower die core 5 fixedly connected therewith, the lower die seat 3 is provided with the lower centering groove 33 at the center of the top, and the lower die core 5 is embedded in the lower centering groove 33, so as to ensure the accuracy of the installation position of the lower die core 5; the top structure of the lower die core 5 is matched with the structure of the shaping cavity, and the lower die core 5 can be in upper and lower butt joint fit; in order to facilitate the top-off of the plate part from the lower die core 5, the lower die core 5 is provided with the pin hole 51 penetrating through the top thereof upwards, and the elastic ejector pin 52 is arranged in the pin hole 51, and the top of the elastic ejector pin 52 protrudes outward on the top of the pin hole 51 in the open die state.

[0028] In order to ensure the safety of the upper die and the lower die when they are closed, the upper limiting column 21 is arranged at the bottom of the upper die plate 2, and the lower limiting column 31 corresponding to the upper limiting column 21 is arranged at the top of the lower die seat 3, the upper limiting column 21 and the lower limiting column 31 corresponding to each other form a group, and there are at least two groups arranged at the corresponding corner positions of the upper die plate 2 and the lower die seat 3; in order to ensure the accuracy of the position of the upper die plate 2 and the lower die seat 3 when they are closed, and ensure the machining precision of the product, the guide sleeve 22 fixedly connected with the upper die plate 2 is arranged at the bottom of the upper die plate 2, the guide hole 23 corresponding to and communicating with the center guide hole of the guide sleeve 22 is arranged on the upper die plate 2, the diameter of the guide hole 23 is matched with that of the guide hole, the guide column 32 in sliding fit with the guide hole 23 is inserted into the guide hole 23 and the guide hole corresponding to each other, and the lower end of the guide column 32 is fixed on the lower die seat 3; in order to avoid the interference between the bottom of the vertical plate 11 and the top of the guide column 32, the transition groove 111 facilitating the upward movement of the upper end of the guide column 32 is arranged at the bottom of the upper supporting plate 1.

[0029] In working, the plate to be processed is placed on the top of the lower die core 5, the hydraulic machine drives the upper pad plate to descend, the upper supporting plate 1 drives the vertical plate 11 on the top of the upper supporting plate 1, the upper die plate 2, the upper die foot 4, the upper cutter block 6 and the upper limiting column 21 to descend synchronously, the bottom of the upper cutter block 6 is first abutted against the top surface of the plate to be processed on the top of the lower die core 5, so that the position is fixed, the pre-positioning is realized, and the position deviation of the plate to be processed is prevented, with the continuous descending of the upper pad plate of the hydraulic machine, the vertical plate 11, the upper die plate 2, the upper die foot 4 and the upper limiting column 21 continue to descend, while the position of the upper cutter block 6 is unchanged, after the top of the upper cutter block 6 is embedded in the upper centering groove 24, the upper die plate 2 drives the upper cutter block 6 to move downward along the guide rod 43, the plate to be processed on the top of the lower die core 5 is stretched, deformed and shaped, and the process is ended after the upper limiting column 21 is abutted against the lower limiting column 31; in mold opening, the upper die plate 2 is separated from the lower die core 5, the guide rod 43 is driven by the nitrogen spring 42 without mutual pressure, the metal part is prevented from being adhered to the bottom of the upper cutter block 6, at the same time, the elastic ejector pin 52 is upwardly ejected to take out the metal part from the top of the lower die core 5, and the rapid mold opening of the metal part is realized.

[0030] The pre-positioning of the plate to be punched is realized by the upper cutter block 6 abutting against the plate to be punched on the top of the lower die core 5 in mold closing, the situation that the plate to be punched is deviated in formal stamping is avoided, in mold opening, the metal part is downwardly pushed by the guide rod 43 and upwardly pushed by the elastic ejector pin 52, the metal part is prevented from being adhered to the upper cutter block 6 or the lower die core 5, the demolding effect of the metal part is good, the processing quality and the demolding effect are improved, and the processing efficiency is improved.

[0031] It should be emphasized that the above is only a preferred embodiment of the present application, and is not used to limit the present application, for those skilled in the art, the present application can have various changes and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A concave sheet metal part shaping die comprising an upper die plate (2) and a lower die seat (3) corresponding to each other, characterized in that: The top of the upper die plate (2) is provided with an upper die foot (4) fixedly connected thereto, the top of the upper die foot (4) is provided with an upper supporting plate (1) fixedly connected thereto, left and right symmetrical vertical plates (11) are provided, the upper and lower ends of the vertical plate (11) are fixedly connected with the upper supporting plate (1) and the upper die plate (2) respectively, an elastic positioning device is arranged in the upper die foot (4), the lower end of the elastic positioning device penetrates downward below the bottom of the upper die plate (2), an upper knife block (6) capable of moving up and down is arranged at the bottom of the upper die plate (2), a shaping cavity is arranged at the bottom of the upper knife block (6), and a top pressing hole (61) penetrating downward through the shaping cavity is arranged at the top of the upper knife block (6); the top pressing hole (61) corresponds to the elastic positioning device in a sleeved and matched manner, and the lower end of the elastic positioning device penetrates into the top pressing hole (61); the top of the lower die seat (3) is provided with a lower die core (5) fixedly connected thereto, the top structure of the lower die core (5) is consistent with the structure of the shaping cavity, and the lower die core (5) can be in upper and lower butt joint cooperation.

2. A draw die for reshaping a concave sheet metal part according to claim 1, characterized in that: An upper and lower communication guide connecting hole (41) is arranged in the upper die foot (4), and the elastic positioning device is arranged in the guide connecting hole (41); a transition hole corresponding to the guide connecting hole (41) in an up-down manner and having a diameter consistent with the guide connecting hole (41) is arranged on the upper die plate (2), and the transition hole penetrates the upper and lower ends of the upper die plate (2).

3. A draw die for reshaping a concave sheet metal part as defined in claim 1, wherein: The elastic positioning device is composed of a nitrogen spring (42) and a guide rod (43); the top of the nitrogen spring (42) is fixedly connected to the upper supporting plate (1), and the top of the guide rod (43) is fixedly connected with the lower end of the nitrogen spring (42).

4. A draw die for reshaping a concave sheet metal part as defined in claim 1, wherein: An upper limiting column (21) is arranged at the bottom of the upper die plate (2), and a lower limiting column (31) corresponding to the upper limiting column (21) in an up-down manner is arranged at the top of the lower die seat (3).

5. A draw die for reshaping a concave sheet metal part as defined in claim 1, wherein: An upper limiting column (21) is arranged at the bottom of the upper die plate (2), and a lower limiting column (31) corresponding to the upper limiting column (21) in an up-down manner is arranged at the top of the lower die seat (3).

6. A draw die for reshaping a concave sheet metal part as defined in claim 1, wherein: A guide sleeve (22) fixedly connected to the upper die plate (2) is arranged at the bottom of the upper die plate (2), a guide hole (23) corresponding to the center guide hole of the guide sleeve (22) in an up-down manner and in communication is arranged on the upper die plate (2), a guide column (32) slidably fitted with the guide hole (23) and the center guide hole in an up-down manner is inserted therein, and the lower end of the guide column (32) is fixed to the lower die seat (3); a transition groove (111) facilitating the upward movement of the upper end of the guide column (32) is arranged at the bottom of the upper supporting plate (1).

7. A draw die for reshaping a concave sheet metal part as defined in claim 1, wherein: A pin hole (51) penetrating upward through the top of the lower die core (5) is arranged in the lower die core (5), and an elastic top pin (52) is arranged in the pin hole (51).

8. A draw die for reshaping a concave sheet metal part as defined in claim 1, wherein: The upper knife block (6) is hung below the bottom of the upper die plate (2) through an equal-height bolt (45); an equal-height hole (44) penetrating downward through the bottom of the upper die plate (2) is arranged in the upper die foot (4), and the equal-height bolt (45) penetrates into the equal-height hole (44), and the lower end of the equal-height bolt (45) is fixedly connected with the top of the upper knife block (6) penetrating through the upper die plate (2). A center upper centering groove (24) is arranged at the bottom of the upper die plate (2), and the top of the upper knife block (6) can be embedded in the upper centering groove (24); a center lower centering groove (33) is arranged at the top of the lower die seat (3), and the bottom of the lower die core (5) is embedded in the lower centering groove (33).

Images