Trimming and punching composite die

Abstract

The utility model relates to the technical field of forging production, and provides a trimming and punching composite die which comprises a bottom plate and a pair of stand columns, the stand columns are fixed to the two ends of the surface of the bottom plate, a base layer die is fixed to the stand columns, a middle layer die and a top layer die are slidably connected to the stand columns in a sleeved mode, and a forming trimming assembly is arranged outside the middle layer die. The punching assembly is arranged between the middle-layer mold and the top-layer mold, the ejection assembly is arranged on the bottom plate and the base-layer mold, the forming and trimming assembly comprises a plurality of positioning columns, the positioning columns are fixed to the surface of the bottom plate, the positioning columns are connected with the base-layer mold and the middle-layer mold in a sliding and sleeving mode, and first springs are connected to the outer portions of the positioning columns in a sleeving mode. By means of the technical scheme, the problems that in the current domestic forging industry in the related technology, edge cutting and punching are conducted in two procedures, the number of workers and the number of devices are two, and arrangement of a production line and the occupied area are affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of forging production, in particular to a trimming and punching composite die. Background Art

[0002] Molds are various molds and tools used in industrial production to obtain the desired products by injection molding, blow molding, extrusion, die casting or forging molding, smelting, stamping and other methods. In short, molds are tools used to make molded objects. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the shape of the object by changing the physical state of the molded material. It is known as the "mother of industry".

[0003] A tool that makes the blank into a product with a specific shape and size under the action of external force. It is widely used in blanking, die forging, cold heading, extrusion, powder metallurgy pressing, pressure casting, and compression or injection molding of engineering plastics, rubber, ceramics and other products. The mold has a specific contour or inner cavity shape. The use of a contour shape with a cutting edge can make the blank separate (blanking) according to the shape of the contour line. The use of the inner cavity shape can make the blank obtain a corresponding three-dimensional shape. The mold generally consists of a movable mold and a fixed mold (or a punch and a die), which can be separated or combined. When separated, the product is taken out, and when closed, the blank is injected into the mold cavity for forming. The mold is a precision tool with a complex shape. It bears the expansion force of the blank. It has high requirements for structural strength, rigidity, surface hardness, surface roughness and processing accuracy. The development level of mold production is one of the important indicators of the level of mechanical manufacturing.

[0004] At present, in the domestic forging industry, trimming and punching are two processes, which require two people and two pieces of equipment respectively, which also affects the layout of the production line and the occupied area.

[0005] Therefore, improvements are made to address the above problems. Utility Model Content

[0006] The utility model provides a trimming and punching composite die, which solves the problem in the current domestic forging industry in the related technology that trimming and punching are two processes, two people and two equipments are required respectively, which also affects the layout of the production line and the occupied area.

[0007] The technical solution of the utility model is as follows: a trimming and punching composite die, characterized in that it is fixed at both ends of the bottom plate surface;

[0008] A base mold, a middle mold and a top mold, wherein the base mold is fixed on the column, and the middle mold and the top mold are slidably connected to the column;

[0009] A molding and trimming assembly, wherein the molding and trimming assembly is arranged outside the middle layer mold;

[0010] A punching assembly, the punching assembly is arranged between the middle layer mold and the top layer mold;

[0011] A pop-up assembly, the pop-up assembly being arranged on the bottom plate and the base mold;

[0012] The molding trimming assembly includes a plurality of positioning columns, the positioning columns are fixed to the surface of the bottom plate, the positioning columns are slidably connected to the base mold and the middle mold, and the outside of the positioning columns is connected to a first spring.

[0013] As a further technical solution, a stamping layer is provided on the upper surface of the base mold and the lower surface of the middle mold, a trimming layer is provided at the bottom of the middle mold, a plurality of movable holes are provided at the top of the top mold, a plurality of grooves are provided on the surface of the middle mold, progressive columns are provided in the grooves, and a second spring is connected to the outside of the progressive column.

[0014] As a further technical solution, the punching assembly includes a center groove, which is opened in the middle layer mold. A punching column is arranged at the bottom of the top layer mold. The punching column is movably connected in the center groove, and an auxiliary spring is installed in the center groove.

[0015] As a further technical solution, the pop-up component includes a bottom hole, which is opened on the surface of the base mold. A fixed sleeve is provided on the surface of the bottom plate. A pop-up column is movably mounted inside the fixed sleeve and connected to the pop-up column. The pop-up column is movably mounted inside the fixed sleeve, and the upper end of the pop-up column is mounted inside the bottom hole. A pop-up spring is provided inside the fixed sleeve.

[0016] As a further technical solution, a diameter of the first spring is smaller than a diameter of the second spring, and an elastic force of the second spring is greater than an elastic force of the second spring.

[0017] As a further technical solution, the inner diameter of the bottom hole matches the diameter of the punching column, and the bottom hole and the punching column are located at the same axial position.

[0018] As a further technical solution, a limiting layer is provided in the central groove, and the limiting layer is in contact with the outer surface of the punching column.

[0019] As a further technical solution, the top of the pop-up column is a planar structure, and the top surface of the pop-up column and the inner surface of the stamping layer are located in the same plane.

[0020] The working principle and beneficial effects of the utility model are:

[0021] The utility model is provided with a forming and trimming assembly. Through the interaction of structures such as the positioning column, the first spring, the stamping layer, the trimming layer, the progressive column and the second spring, the stamping and trimming operations can be completed respectively through the progressive descending effect of the top layer mold and the middle layer mold. Combined with the punching column in the punching assembly, the processing can be completed at one time, saving processing steps and reducing costs, and has good forming effect and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] Figure 1 It is a schematic diagram of the structure of the utility model;

[0024] Figure 2 This is the axonometric drawing of the utility model;

[0025] Figure 3 It is a cross-sectional view of the utility model;

[0026] In the figure: 1, bottom plate; 2, column; 3, base layer mold; 4, middle layer mold; 5, top layer mold; 6, forming and trimming assembly; 6-1, positioning column; 6-2, first spring; 6-3, stamping layer; 6-4, trimming layer; 6-5, movable hole; 6-6, groove; 6-7, progressive column; 6-8, second spring; 7, punching assembly; 7-1, center groove; 7-2, punching column; 7-3, auxiliary spring; 8, pop-up assembly; 8-1, bottom hole; 8-2, fixed sleeve; 8-3, pop-up column; 8-4, pop-up spring; 9, limiting layer. DETAILED DESCRIPTION

[0027] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] like Figure 1~Figure 3 As shown, this embodiment provides a trimming and punching composite die, including

[0029] A bottom plate 1 and a pair of columns 2, wherein the columns 2 are fixed at two ends of the surface of the bottom plate 1;

[0030] A base mold 3, a middle mold 4 and a top mold 5, wherein the base mold 3 is fixed on the column 2, and the middle mold 4 and the top mold 5 are slidably connected to the column 2;

[0031] A molding and trimming component 6, wherein the molding and trimming component 6 is arranged outside the middle layer mold 4;

[0032] A punching assembly 7, wherein the punching assembly 7 is arranged between the middle layer mold 4 and the top layer mold 5;

[0033] An ejection assembly 8, wherein the ejection assembly 8 is disposed on the base plate 1 and the base mold 3;

[0034] The forming and trimming assembly 6 includes a plurality of positioning columns 6-1, the positioning columns 6-1 are fixed on the surface of the bottom plate 1, the positioning columns 6-1 are slidably fitted with the base mold 3 and the middle mold 4, the outer sleeve of the positioning column 6-1 is connected with a first spring 6-2, the upper surface of the base mold 3 and the lower surface of the middle mold 4 are both provided with a stamping layer 6-3, the bottom of the middle mold 4 is provided with a trimming layer 6-4, the top of the top mold 5 is provided with a plurality of movable holes 6-5, the surface of the middle mold 4 is provided with a plurality of grooves 6-6, the grooves 6-6 are provided with progressive columns 6-7, and the outer sleeve of the progressive columns 6-7 is connected with a second spring 6-8.

[0035] In this embodiment, in order to achieve the effect of forming and slicing, a forming and trimming component 6 is designed, and positioning columns 6-1 are arranged at the four opposite corners of the bottom plate 1, and the top of the positioning column 6-1 is connected with the middle-layer mold 4 by sliding sleeve, and a first spring 6-2 is sleeved on the outside of the positioning column 6-1, so that the middle-layer mold 4 can move downward, and a stamping layer 6-3 is arranged on the bottom surface of the punching layer mold and the surface of the base mold 3, and a trimming layer 6-4 is arranged on the bottom of the middle-layer mold 4, and a groove 6-6 is opened on the top of the middle-layer mold 4, and a progressive column 6-7 is arranged in the groove 6-6, and a movable hole 6-5 is opened on the top of the top mold 5, and the movable hole 6-5 is sleeved with the progressive column 6-7, and a second spring 6-8 is sleeved on the outside of the progressive column 6-7. When the top mold 5 descends, the middle mold 4 is pushed first, and stamping is performed through the stamping layer 6-3, and then the top mold 5 descends, and the trimming is completed through the trimming layer 6-4.

[0036] Furthermore, the punching assembly 7 includes a center groove 7-1, which is opened in the middle layer mold 4. A punching column 7-2 is arranged at the bottom of the top layer mold 5. The punching column 7-2 is movably connected in the center groove 7-1, and an auxiliary spring 7-3 is installed in the center groove 7-1.

[0037] In this embodiment, in order to achieve the effect of synchronous punching, a punching assembly 7 is designed, a center groove 7-1 is opened in the middle layer mold 4, and a punching column 7-2 is fixedly connected to the bottom of the top layer mold 5. While the trimming layer 6-4 is trimming, the punching column 7-2 will synchronously complete the punching.

[0038] Furthermore, the pop-up component 8 includes a bottom hole 8-1, which is opened on the surface of the base mold 3. A fixed sleeve 8-2 is provided on the surface of the bottom plate 1. A pop-up column 8-3 is movably mounted inside the fixed sleeve 8-2. The pop-up column 8-3 is movably mounted inside the fixed sleeve 8-2. The upper end of the pop-up column 8-3 is mounted inside the bottom hole 8-1. A pop-up spring 8-4 is provided inside the fixed sleeve 8-2.

[0039] In this embodiment, in order to achieve the effect of pushing the punched waste outward, an ejection component 8 is designed, a bottom hole 8-1 is opened on the surface of the base mold 3, and a fixed sleeve 8-2 is installed. The fixed sleeve 8-2 is internally movable and has an ejection column 8-3 adjacent to it. The ejection column 8-3 is movably mounted in the bottom hole 8-1, and an ejection spring 8-4 is arranged inside. The waste material entering the bottom hole 8-1 during punching can be pushed outward by the elastic force of the ejection spring 8-4.

[0040] Furthermore, the diameter of the first spring 6 - 2 is smaller than the diameter of the second spring 6 - 8 , and the elastic force of the second spring 6 - 8 is greater than the elastic force of the second spring 6 - 8 .

[0041] In this embodiment, in order to achieve the effect of progressively stamping the middle layer mold 4 and the top layer mold 5 downward, the first spring 6-2 and the second spring 6-8 are differentiated by elastic force to achieve a progressive effect.

[0042] Furthermore, the inner diameter of the bottom hole 8-1 matches the diameter of the punching column 7-2, and the bottom hole 8-1 and the punching column 7-2 are located at the same axial position.

[0043] In this embodiment, the matching diameter effect enables the punching to enter the bottom hole 8-1, and the punching is also convenient for pushing out for cleaning.

[0044] Furthermore, a limiting layer 9 is provided in the central groove 7 - 1 , and the limiting layer 9 is in contact with the outer surface of the punching column 7 - 2 .

[0045] In this embodiment, by providing a limiting layer 9 inside, the punching column 7-2 can maintain a fixed height with the inside.

[0046] Furthermore, the top of the pop-up column 8-3 is a planar structure, and the top surface of the pop-up column 8-3 and the inner surface of the stamping layer 6-3 are located in the same plane.

[0047] In this embodiment, the planar structure is used to ensure that the punching and trimming processes are always kept flat, and then the punching is completed.

[0048] When processing is needed, the top of the punch press presses downward, so that the top mold 5 pushes the middle mold 4 downward through the second spring 6-8, and the first spring 6-2 contracts to make the punching layer 6-3 punch, and then continue to descend after forming. The second spring 6-8 contracts to make the trimming layer 6-4 complete the trimming. At the same time, the punching column 7-2 penetrates the material to punch, and the waste during punching enters the bottom hole 8-1. The pop-up column 8-3 cooperates to sink, and when it is reset after completion, the spring elastic force pushes the pop-up column 8-3 upward to discharge the waste, and the workpiece and waste are removed and the processing can be continued.

[0049] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A trimming and punching composite die, characterized in that: include A base plate (1) and a pair of upright posts (2), wherein the upright posts (2) are fixed at two ends of the surface of the base plate (1); A base mold (3), a middle mold (4) and a top mold (5), wherein the base mold (3) is fixed on the column (2), and the middle mold (4) and the top mold (5) are slidably connected to the column (2); A molding and trimming assembly (6), wherein the molding and trimming assembly (6) is arranged outside the middle layer mold (4); A punching assembly (7), wherein the punching assembly (7) is arranged between the middle layer mold (4) and the top layer mold (5); An ejection component (8), the ejection component (8) being arranged on the base plate (1) and the base mold (3); The molding trimming assembly (6) comprises a plurality of positioning columns (6-1), wherein the positioning columns (6-1) are fixed on the surface of the base plate (1), the positioning columns (6-1) are slidably connected to the base layer mold (3) and the middle layer mold (4), and the outside of the positioning columns (6-1) is connected to a first spring (6-2).

2. The trimming and punching composite die according to claim 1, characterized in that: The upper surface of the base mold (3) and the lower surface of the middle mold (4) are both provided with a stamping layer (6-3), the bottom of the middle mold (4) is provided with a trimming layer (6-4), the top of the top mold (5) is provided with a plurality of movable holes (6-5), the surface of the middle mold (4) is provided with a plurality of grooves (6-6), the grooves (6-6) are provided with progressive columns (6-7), and the outside of the progressive columns (6-7) is sleeved and connected with a second spring (6-8).

3. The trimming and punching composite die according to claim 2, characterized in that: The punching assembly (7) comprises a central groove (7-1), wherein the central groove (7-1) is opened in the middle layer mold (4), a punching column (7-2) is arranged at the bottom of the top layer mold (5), the punching column (7-2) is movably connected in the central groove (7-1), and an auxiliary spring (7-3) is installed in the central groove (7-1).

4. The trimming and punching composite die according to claim 3, characterized in that: The ejection assembly (8) comprises a bottom hole (8-1), the bottom hole (8-1) is opened on the surface of the base mold (3), a fixed sleeve (8-2) is arranged on the surface of the bottom plate (1), an ejection column (8-3) is movably sleeved in the fixed sleeve (8-2), the ejection column (8-3) is movably sleeved in the fixed sleeve (8-2), the upper end of the ejection column (8-3) is sleeved in the bottom hole (8-1), and an ejection spring (8-4) is arranged in the fixed sleeve (8-2).

5. The trimming and punching composite die according to claim 2, characterized in that: The diameter of the first spring (6-2) is smaller than the diameter of the second spring (6-8), and the elastic force of the second spring (6-8) is greater than the elastic force of the second spring (6-8).

6. The trimming and punching composite die according to claim 4, characterized in that: The inner diameter of the bottom hole (8-1) matches the diameter of the punching column (7-2), and the bottom hole (8-1) and the punching column (7-2) are located at the same axial position.

7. The trimming and punching composite die according to claim 3, characterized in that: A limiting layer (9) is arranged in the central groove (7-1), and the limiting layer (9) is in contact with the outer surface of the punching column (7-2).

8. The trimming and punching composite die according to claim 4, characterized in that: The top of the pop-up column (8-3) is a planar structure, and the top surface of the pop-up column (8-3) and the inner surface of the stamping layer (6-3) are located in the same plane.

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