Double-die-cavity drawing die structure

Abstract

The utility model relates to the technical field of dies, in particular to a dual-die-cavity drawing die structure which comprises a lower die base and an upper die base, two male die assemblies are fixed above the lower die base, and two female die assemblies are fixed on the lower side of the upper die base. A blank holder is further connected to the upper portion of the lower die base in a lifting mode, and the outer sides of the two male die assemblies are sleeved with the blank holder. By adopting the design of the two male die assemblies, forming operation of two products can be achieved at the same time, the machining efficiency is effectively improved, the positioning assembly is arranged between the upper die base and the lower die base and used for improving the die assembly precision between the upper die base and the lower die base, the forming quality of the products is guaranteed, and the product quality is improved. According to the insert used for calendaring forming, the positioning insert block used for installing and positioning the insert is further arranged on the supporting base, accurate positioning of the insert in the insert installing process can be achieved, and the stability of finished product forming is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a mold structure for double-mode cavity drawing. Background Art

[0002] The drawing convex die punches the sheet metal into the concave die to form a three-dimensional part with the shape of the concave die cavity. This stamping method, also known as drawing or deep drawing, is the most important three-dimensional sheet metal forming method. Due to the development of sheet metal forming technology and the improvement of productivity, there is an obvious tendency for machined parts, castings, etc. to be transformed into sheet metal parts, which puts higher and higher requirements on sheet metal forming technology, and the core is drawing forming.

[0003] When processing the blank, the upper die, lower die and blank holder are usually cooperated with each other, and the ejector rod of the press directly applies a force to the blank holder, so that the blank holder can extrude the blank, and the blank can be stamped and formed. For example, a drawing die and drawing equipment disclosed in Chinese Patent Publication No. "CN113732153A".

[0004] At present, during the operation of some drawing dies, only the forming task of a single product can be completed each time. This single-piece operation method results in low production efficiency and restricts the development pace of enterprises. Based on this, in order to further improve the applicability of existing dies, we propose a mold structure for double-mode cavity drawing. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the shortcomings of forming a single product and low production efficiency in the prior art, and to propose a mold structure for double-mode cavity drawing.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] Design a mold structure for double-mode cavity drawing, including a lower die base and an upper die base. Two punch assemblies are fixed above the lower die base, and two die cavity assemblies are fixed on the lower side of the upper die base;

[0008] Wherein, a blank holder is also liftably connected above the lower die base, and the blank holder is sleeved outside the two punch assemblies;

[0009] A limiting component is arranged between the blank holder and the lower die base, and a positioning component is also arranged between the lower die base and the upper die base.

[0010] Further, the limiting component includes a guide post fixedly installed on the lower die base. A groove is opened on the side of the upper die base, and the end of the guide post is inserted into the groove. Wherein, a positioning piece is also fixed at the end of the guide post.

[0011] Furthermore, the positioning component includes a positioning block fixedly installed on the side of the upper die base, at least a part of the positioning block extends to the lower side of the upper die base, a positioning port is arranged on the side of the lower die base, and at least a part of the positioning block is inserted into the positioning port.

[0012] Furthermore, the positioning component further includes:

[0013] A plurality of positioning rods fixed on the lower die base, a positioning groove is arranged at the lower end of the upper die base, and the top of the positioning rod is inserted into the positioning groove.

[0014] Furthermore, the positioning rod has an L-shaped structure, and its top has a guiding inclined surface. A connecting seat is arranged on the top of the lower die base. A sliding seat is fixed at the bottom of the positioning rod, and two one-word grooves are opened on the end surface of the sliding seat. The one-word grooves are fixed to the connecting seat through fasteners.

[0015] Furthermore, the punch component includes a support seat fixed to the lower die base. An insert is arranged above the support seat. A positioning insert block is fixed above the support seat. An adaptation hole adapted to the positioning insert block is arranged at the bottom of the insert.

[0016] The beneficial effect of the mold structure for double-mode cavity drawing proposed by the present utility model is as follows: In the present utility model, by adopting the design of two punch components, the forming operation of two products can be realized simultaneously, effectively improving the processing efficiency. Secondly, a positioning component is arranged between the upper die base and the lower die base to improve the die closing accuracy between the upper die base and the lower die base to ensure the forming quality of the product. For the insert used for rolling forming, a positioning insert block for installing and positioning it is also arranged on the support seat, which can realize precise positioning of the insert during the installation process of the insert to further improve the stability of the finished product forming. The overall structure design is simple, greatly optimizing the applicability of the existing mold. Description of the Drawings

[0017] Figure 1 It is a structural schematic diagram of the present utility model;

[0018] Figure 2 It is a front view of the present utility model;

[0019] Figure 3 It is a structural schematic diagram of the positioning rod of the present utility model;

[0020] Figure 4 It is a structural schematic diagram of the punch component of the present utility model.

[0021] In the figure: 1. Lower die base; 2. Upper die base; 3. Punch assembly; 31. Support base; 32. Insert; 33. Positioning insert block; 4. Blank holder; 5. Limit assembly; 51. Guide pillar; 52. Groove; 53. Positioning part; 6. Positioning assembly; 61. Positioning block; 62. Positioning port; 63. Positioning rod; 631. Guiding inclined surface; 64. Connecting seat; 65. Slide block; 66. One-word groove. Specific implementation mode

[0022] 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.

[0023] Refer to Figures 1-4 As an embodiment of the present invention, it discloses a die structure for double-mode cavity drawing. The die includes a lower die base 1 and an upper die base 2. Specifically, two punch assemblies 3 are fixed above the lower die base 1, and two die cavity assemblies are fixed on the lower side of the upper die base 2;

[0024] Among them, a blank holder 4 is also liftably connected above the lower die base 1. In order to achieve sliding, in this embodiment, a plurality of guide rods are provided at the bottom of the blank holder 4, and a guide sleeve is provided on the end surface of the lower die base 4. Through the sliding fit of the guide rod and the guide sleeve, the up and down movement of the blank holder 4 is realized. The blank holder 4 is sleeved outside the two punch assemblies 3;

[0025] A limit assembly 5 is provided between the blank holder 4 and the lower die base 1, and a positioning assembly 6 is also provided between the lower die base 1 and the upper die base 2.

[0026] During specific work, the upper die base 2 and the lower die base 1 are installed on the press, the blank holder 4 is installed on the lower die base 1, and the blank holder 4 is pushed upward by the push rod on the press. After that, the sheet to be processed is placed between the blank holder 4 and the upper die base 2 and clamped. Further, the press action drives the blank holder 4 and the upper die base 2 to move downward synchronously. At this time, the punch assembly 3 cooperates with the die cavity assembly to perform the drawing operation on the sheet. At the same time, due to the design of two punch assemblies 3 in this embodiment, the forming operation of two products can be realized simultaneously, effectively improving the processing efficiency.

[0027] In some embodiments, the limiting component 5 in the utility model includes a guide post 51 fixedly installed on the lower die base 1. A groove 52 is formed on the side of the upper die base 2, and the end of the guide post 51 is inserted into the groove 52. Wherein, a positioning member 53 is further fixed at the end of the guide post 51. Preferably, in this embodiment, the positioning member 53 is set as a flange bolt, which is threadedly connected to the end of the guide post 51 and is used to limit the upward movement distance of the blank holder 4. That is, when the blank holder 4 moves upward, the flange surface of the flange bolt abuts against the inner side surface of the groove 52 to realize the movement limit of the blank holder 4.

[0028] Furthermore, the positioning component 6 includes a positioning block 61 fixedly installed on the side of the upper die base 2. At least part of the positioning block 61 extends to the lower side of the upper die base 2. A positioning port 62 is arranged on the side of the lower die base 1, and at least part of the positioning block 61 is inserted into the positioning port 62. Preferably, in this embodiment, two positioning blocks 61 and positioning ports 62 are symmetrically arranged. Among them, the positioning block 61 is fixed to the side of the upper die base 2 by bolts. The use of the positioning block 61 and the positioning port 62 can improve the accuracy of mold closing to ensure the processing accuracy of the product.

[0029] On the basis of the above embodiments, the positioning component 6 in this embodiment further includes:

[0030] A plurality of positioning rods 63 fixed on the lower die base 1. A positioning groove is arranged at the lower end of the upper die base 2, and the top of the positioning rod 63 is inserted into the positioning groove.

[0031] In addition, the above positioning rod 63 has an L-shaped structure, and its top has a guiding inclined surface 631. A connecting seat 64 is arranged on the top of the lower die base 1. A sliding seat 65 is fixed at the bottom of the positioning rod 63. Two straight slots 66 are formed on the end surface of the sliding seat 65, and the straight slots 66 are fixed to the connecting seat 64 through fasteners. The fasteners are bolts.

[0032] Specifically, in this embodiment, by adopting the design of the positioning rod 63, it is used to further improve the mold closing accuracy between the upper die base 2 and the lower die base 1 to ensure the forming quality of the product. In addition, since the positioning rod 63 is designed as an adjustable structure, during actual assembly and installation, it can be adjusted according to the actual insertion position to improve the assembly convenience of the entire mold.

[0033] In addition, the punch assembly 3 includes a support base 31 fixed to the lower die base 1. The support base 31 is fixed to the lower die base 1 by bolts. An insert 32 is provided above the support base 31. Of course, the insert 32 can also be connected and fixed to the lower die base 1 by bolts passing through the support base 31. A positioning insert block 33 is fixed above the support base 31. An adaptor hole adapted to the positioning insert block 33 is provided at the bottom of the insert 32. By using the cooperation of the positioning insert block 33 and the adaptor hole, accurate positioning of the insert 32 can be achieved during the installation process of the insert 32, so as to improve the stability of the finished product forming. Those skilled in the art know that in this embodiment, the die assembly can also adopt this positioning and installation structure. The specific design method can refer to the above description and will not be elaborated here.

[0034] In summary, in the present invention, by adopting the design of two punch assemblies 3, the forming operation of two products can be realized simultaneously, effectively improving the processing efficiency. Secondly, a positioning assembly 6 is provided between the upper die base 2 and the lower die base 1 to improve the die closing accuracy between the upper die base 2 and the lower die base 1 to ensure the forming quality of the product. For the insert 32 used for calendering forming, a positioning insert block 33 for installing and positioning it is further provided on the support base 31, which can achieve accurate positioning of the insert 32 during the installation process of the insert 32 to further improve the stability of the finished product forming.

[0035] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A die structure for double-mode cavity drawing, comprising a lower die base (1) and an upper die base (2), characterized in that: Above the lower die base (1), two punch assemblies (3) are fixed, and two die assemblies are fixed on the lower side of the upper die base (2). Among them, a blank holder (4) is also liftably connected above the lower die base (1), and the blank holder (4) is sleeved outside the two punch assemblies (3). A limiting assembly (5) is arranged between the blank holder (4) and the lower die base (1), and a positioning assembly (6) is also arranged between the lower die base (1) and the upper die base (2).

2. The die structure for double-mode cavity drawing according to claim 1, characterized in that: The limiting assembly (5) includes a guide post (51) fixedly installed on the lower die base (1). A groove (52) is formed on the side of the upper die base (2), and the end of the guide post (51) is inserted into the groove (52). Among them, a positioning part (53) is also fixed at the end of the guide post (51).

3. The die structure for dual-mode cavity drawing according to claim 1, wherein: The positioning assembly (6) includes a positioning block (61) fixedly installed on the side of the upper die base (2). At least part of the positioning block (61) extends to the lower side of the upper die base (2). A positioning opening (62) is arranged on the side of the lower die base (1), and at least part of the positioning block (61) is inserted into the positioning opening (62).

4. A die structure for dual-mode cavity drawing according to claim 3, characterized in that: The positioning assembly (6) further includes: A plurality of positioning rods (63) fixed on the lower die base (1). A positioning groove is arranged at the lower end of the upper die base (2), and the top of the positioning rod (63) is inserted into the positioning groove.

5. The die structure for double-mode cavity drawing according to claim 4, wherein: The positioning rod (63) has an L-shaped structure, and its top has a guiding inclined surface (631). A connecting seat (64) is arranged on the top of the lower die base (1). A sliding seat (65) is fixed at the bottom of the positioning rod (63). Two straight slots (66) are formed on the end surface of the sliding seat (65), and the straight slots (66) are fixed to the connecting seat (64) through fasteners.

6. The die structure for double-mode cavity drawing according to claim 1, characterized in that: The punch assembly (3) includes a support seat (31) fixed to the lower die base (1). An insert (32) is arranged above the support seat (31). A positioning insert block (33) is fixed above the support seat (31), and an adaptor hole adapted to the positioning insert block (33) is arranged at the bottom of the insert (32).

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