CN204448977U - A kind of shaping raw embryo punching jig - Google Patents

Abstract

A molded green blank punching fixture, including an upper template, a punch driven by the upper template, a lower template and a lower mold knife edge installed on the lower template, and a stripper plate and a spring, the stripper The material plate is arranged between the upper die plate and the lower die plate, and is used to press the raw material on the edge of the lower die during the punching process, and the stripping plate is provided with a movable through groove for the punch, so that the punch can pass through the movable channel of the punch to move close to or away from the knife edge of the lower die, the spring is connected between the upper die plate and the stripper plate, and the The setting is such that when the upper template is pressed down, the spring makes the stripper plate contact the raw material on the lower die edge before the punch, and when the upper template moves up, the The spring makes the stripping plate leave the green blank on the edge of the lower die later than the punch. The punching fixture can efficiently, accurately and safely remove the multi-material part of the formed green blank.

Description

A punching jig for forming green embryos

technical field

The utility model relates to a punching fixture for forming raw embryos.

Background technique

Powder injection molding technology is a new type of molding technology, which has the advantages of being able to form complex shaped products at one time, high product size accuracy, no need for machining or only minimal processing, low preparation cost, etc., and it can be formed into complex shapes or difficult to cut. Ceramic and metal parts, has a wide range of application prospects. During the molding process of some frame structure parts, in order to enhance their stability, the molded green parts have multiple parts, which need to be removed.

Utility model content

The main purpose of the utility model is to provide a molded blank punching jig for the deficiencies of the prior art, which can efficiently, accurately and safely punch off the multi-material part of the molded blank.

In order to achieve the above object, the utility model adopts the following technical solutions:

A molded green blank punching fixture, including an upper template, a punch driven by the upper template, a lower template and a lower mold knife edge installed on the lower template, and a stripper plate and a spring, the stripper The material plate is arranged between the upper die plate and the lower die plate, and is used to press the raw material on the edge of the lower die during the punching process, and the stripping plate is provided with a movable through groove for the punch, so that the punch can pass through the movable channel of the punch to move close to or away from the knife edge of the lower die, the spring is connected between the upper die plate and the stripper plate, and the The setting is such that when the upper template is pressed down, the spring makes the stripper plate contact the raw material on the edge of the lower die before the punch, and when the upper template moves up, the The spring makes the stripping plate leave the green blank on the edge of the lower die later than the punch.

further:

It also includes an upper splint arranged between the upper template and the stripper plate, one end of the spring is connected to the upper splint, the other end is connected to the stripper plate, the upper template and the stripper The upper splints are connected by a plurality of adjustable-length positioning columns, and the punch is fixedly connected to the upper splint, or passes through the upper splint and is fixed on the upper formwork.

The lower template is provided with a lower mold knife edge placement groove, and the lower mold knife edge is placed in the lower mold knife edge placement groove.

The horizontal and/or longitudinal direction of the positioning groove of the lower die edge is connected with the positioning block guide groove, and the positioning block guide groove accommodates a positioning block that can guide and move therein, and the positioning block is used to adjust the positioning position of the green blank .

A lower splint is installed on the lower template, and the knife edge placement groove of the lower mold and the guide groove of the positioning block are formed on the lower splint.

The beneficial effects of the utility model:

The molded blank punching fixture of the utility model adopts the design of the upper template, the punch, the lower template and the edge of the lower mold, and the stripping plate and the spring are arranged between the upper template and the lower template, so that the upper template is pressed down , the stripper plate touches the raw material on the edge of the lower die earlier than the punch, and when the upper template moves up, the stripper leaves the green material on the edge of the lower die later than the punch. This design is conducive to the realization of efficient, accurate and safe punching, and the effective removal of the multi-material part of the formed green part, avoiding the deficiencies in the process of manual or equipment trimming and removal of the multi-material part of the formed part in the past. The forming green blank punching fixture not only has simple structure, high working efficiency and convenient maintenance, but also can ensure the dimensional accuracy requirements of the forming green blank, greatly reduces the time of manual blank repair, improves efficiency and saves cost. Further, for the formed green parts of different shapes and sizes, the positioning and punching of parts of different types and sizes can be satisfied through the cooperation between the guide groove of the positioning block, the positioning block and the knife edge of the lower die.

Description of drawings

Fig. 1 is an explosion schematic diagram of an embodiment of the utility model punching fixture;

Fig. 2 is a partial schematic view of the lower mold of an embodiment of the punching fixture of the present invention;

Fig. 3 is a mold clamping perspective view of an embodiment of the utility model punching fixture;

Fig. 4 is the front view of the punching fixture shown in Fig. 3;

FIG. 5 is a side view of the punching jig shown in FIG. 3 .

Detailed ways

Embodiments of the present utility model are described in detail below. It should be emphasized that the following descriptions are only illustrative, not intended to limit the scope of the present utility model and its application.

Referring to Fig. 1 to Fig. 5, according to the embodiment of the present utility model, the die-cutting jig for forming green blanks includes an upper template 1, a punch 6 driven by the upper template 1, a lower template 11, and a lower die edge installed on the lower template 11 9. The stripping plate 5 and the spring 4, the stripping plate 5 is arranged between the upper template 1 and the lower template 11, and is used to press the forming raw material 7 on the knife edge 9 of the lower die during the punching process, and the stripping plate 5 is provided with a movable slot for the punch, so that the punch 6 can pass through the slot and move close to or away from the knife edge 9 of the lower die. The spring 4 is connected between the upper template 1 and the stripper plate 5. The spring 4 The settings are such that when the upper template 1 is pressed down, the action of the spring 4 makes the stripping plate 5 contact the forming raw material 7 on the lower die edge 9 before the punch 6, and when the upper template 1 moves up, the spring 4 The role of the stripping plate 5 is later than the punch 6 to leave the molding raw material 7 on the lower die edge 9.

As shown in Figures 1 and 2, in a preferred embodiment, the molded green blank punching fixture also includes an upper clamping plate 3 arranged between the upper template 1 and the stripper plate 5, and one end of the spring 4 is connected to the upper clamping plate 3 The other end is connected to the stripping plate 5, the upper template 1 and the upper splint 3 are connected by a plurality of positioning columns 2 with adjustable length, and the punch 6 is fixedly connected to the upper splint 3. In another embodiment, the punch 6 can also be fixed on the upper mold plate 1 through the through slot provided on the upper clamping plate 3 .

As shown in Figures 1 and 2, in a preferred embodiment, a lower splint 10 is installed on the lower template 11, and a lower die edge placement groove 12 and a positioning block guide groove 13 are formed on the lower splint 10, and the lower die edge 9 is placed on the In the lower mold knife edge placement groove 12, the horizontal and vertical directions of the lower mold knife edge placement groove 12 are respectively connected to the corresponding positioning block guide groove 13, and the positioning block guide groove 13 accommodates a positioning block 8 that can guide and move therein, and the positioning block 8 is used. To adjust the positioning position of the molding raw material 7. Of course, the lower die edge placement groove 12 and the positioning block guide groove 13 can also be directly arranged on the lower die plate 11, or formed by other intermediate pieces. The positioning block guide groove 13 can also be provided only in the horizontal or vertical direction, or only one or both ends of a certain direction can be provided with the positioning block 8, which can also achieve a certain degree of positioning adjustment.

Referring to Figures 1 to 5, during the working process, the driving mechanism (not shown) applies force to the upper template 11, and transmits the force to the upper splint 3, and the upper splint 3 transmits the force to the stripper plate 5 through the spring 4, so that the stripper plate 5. First move downwards and press the molding raw material 7 on the edge of the lower die. As the distance between the upper splint 3 and the stripper plate 5 is further reduced, the upper template 11 drives the punch 6 to move downward through the stripper plate 5 and touch the forming raw material 7, and pass the punch 6 and the lower die edge 9 The shear force between them removes the multi-material part of the formed green part 7. After the cutting is completed, remove the force of the upper template 11 or drive the upper template 11 to rise, so that the punch 6 is separated from the formed green blank 7, and under the elastic force of the spring 4, the stripping plate 5 first keeps the molded green blank The compressed state of the material 7, until the spring 4 ends its compressed state, then it is separated from the formed green blank, and the punching process is completed.

The above content is a further detailed description of the utility model in combination with specific/preferred embodiments, and it cannot be assumed that the specific implementation of the utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the utility model belongs, on the premise of not departing from the concept of the utility model, they can also make some substitutions or modifications to the described embodiments, and these substitutions or modifications should be It is deemed to belong to the protection scope of the present utility model.

Claims (5)

1. A molded blank punching fixture, comprising an upper template, a punch driven by the upper template, a lower template and a lower die edge installed on the lower template, characterized in that it also includes a stripper plate and a spring, the stripper plate is arranged between the upper die plate and the lower die plate, and is used to press the raw material on the knife edge of the lower die during the punching process, and the stripper plate is provided with The movable slot of the punch, so that the punch can pass through the movable slot of the punch to move close to or away from the knife edge of the lower die, and the spring is connected between the upper template and the stripper plate In between, the setting of the spring satisfies that when the upper die plate is pressed down, the spring makes the stripper plate contact the raw material on the edge of the lower die before the punch, and When the template moves up, the spring makes the stripper plate leave the green blank on the edge of the lower die later than the punch. 2. The forming green blank punching fixture according to claim 1, further comprising an upper splint arranged between the upper template and the stripper plate, one end of the spring is connected to the on the upper splint, the other end of which is connected to the stripper plate, the upper template and the upper splint are connected by a plurality of positioning columns with adjustable lengths, the punch is fixedly connected to the upper splint, Or pass through the upper splint and be fixed on the upper template. 3. The forming green blank punching fixture according to claim 1 or 2, characterized in that, the lower template is provided with a lower mold knife edge placement groove, and the lower mold knife edge is placed in the lower mold knife edge placement groove . 4. The mold blank punching fixture according to claim 3, characterized in that, the horizontal and/or longitudinal direction of the positioning groove of the lower die edge is connected with the guide groove of the positioning block, and the guide groove of the positioning block accommodates a A moving positioning block is guided therein, and the positioning block is used for adjusting the positioning position of the green blank. 5. The forming green blank punching fixture according to claim 4, wherein a lower splint is installed on the lower template, and the knife edge placement groove of the lower mold and the guide groove of the positioning block are formed on the lower template. plywood.