CN102909234B - Fine adjustment mechanism of mould - Google Patents

Abstract

The invention discloses a fine-tuning mechanism for a mold, which comprises a square block and a cover plate matched with its shape. The screw hole is in contact with the peripheral surface of the square block, and the square block can move slightly as the screw is screwed in. The invention solves the problem of low coaxiality between the convex and concave dies due to the error generated in the size processing process and the accumulation of errors generated in the assembly process in the micro-forming process, effectively reduces the processing cost and saves processing costs. time.

Description

A fine-tuning mechanism for a mold

technical field

The invention relates to the field of mold manufacturing, in particular to a fine-tuning mechanism for a mold.

Background technique

The size of the parts obtained by the micro-forming back-extrusion process is usually less than 1mm, which has high requirements for the dimensional accuracy of the mold and the neutrality of the mutual cooperation. Taking the reverse extrusion cup as an example, the wall thickness of the usually extruded cup parts is 0.1mm, 0.2mm, etc. However, the highest dimensional accuracy of existing domestic machining equipment is 0.005mm, but it requires high processing costs and a lot of time. With the accumulation of machining errors and assembly errors at all levels, it is difficult to ensure the centering between the cylindrical punch and the cylindrical hole-shaped die, and it is also impossible to ensure the uniformity of the wall thickness of the formed parts.

Therefore, those skilled in the art are devoting themselves to developing a horizontal fine-tuning mechanism aimed at the required characteristics of the coaxiality between the micro-forming convex and concave dies. It does not require too high matching accuracy between mold parts, and the adjustment is convenient and quick, which brings greater flexibility to scientific research and actual production in factories, and it saves mold processing costs and reduces processing time.

Contents of the invention

In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a horizontal fine-tuning mechanism of the mold to ensure high coaxiality of the convex and concave molds during the experiment.

In order to achieve the above object, the present invention provides a fine-tuning mechanism for a mold, which includes a square block and a cover plate matching its shape, the punch is fixed at the center of the square block, and the cover plate is provided with corresponding screw holes, the screws pass through the screw holes and are in contact with the peripheral surface of the square block, and the square block can move slightly as the screws are screwed in.

The micro-adjustment mechanism of the mold as mentioned above, wherein the gap fit between the square block and the cover plate.

The fine-tuning mechanism for the mold as described above, wherein the square block can be replaced by a polygonal block.

As in the fine-tuning mechanism of the above-mentioned mold, wherein, the arrangement of the screw holes on the cover plate is paired, symmetrical and evenly distributed.

The fine-tuning mechanism for the mold as described above, wherein the screw is threadedly engaged with the screw hole.

The micro-adjustment mechanism of the mold as mentioned above, wherein, the end of the screw is a flat end.

The fine-tuning mechanism for the mold as described above, wherein there are multiple screw holes and screws.

The fine-tuning mechanism of the mold as described above, wherein, the peripheral surface of the square block is four planes.

The fine-tuning mechanism for the mold as described above, wherein only one screw hole is provided on each peripheral surface of the square block.

The fine-tuning mechanism for the mold as described above, wherein the screw hole is perpendicular to the peripheral surface of the square block.

The mold level fine-tuning mechanism provided by the invention solves the problem of low coaxiality between the convex and concave molds caused by machining errors and assembly errors during the micro-forming process, reduces the requirements for machining accuracy, and improves the machining accuracy. efficiency and reduce processing costs.

Description of drawings

Fig. 1 is the assembly diagram of the micro-adjustment mechanism of a preferred embodiment of the present invention;

Fig. 2 is the schematic diagram of the screw in the fine-tuning mechanism of a preferred embodiment of the present invention;

Fig. 3 is the schematic diagram of the square block in the fine-tuning mechanism of a preferred embodiment of the present invention;

Fig. 4 is a schematic diagram of the adjustment direction of an actual fine-tuning mechanism product of the present invention.

Detailed ways

The idea, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of the present invention.

The invention relates to a fine-tuning mechanism for a mold, which includes a square block and a cover plate matched with its shape. The screw hole is in contact with the peripheral surface of the square block, and the square block can move slightly as the screw is screwed in, so as to realize the fine adjustment of the punch.

Due to the miniaturization of the size of the parts, the micro-forming process has very high requirements on dimensional accuracy. If the gap between the punch and die is not uniform, there will be relatively large defects on the product, or even a waste product.

As shown in FIG. 1 , it is a preferred embodiment of the present invention, wherein FIG. 1 is an assembly diagram of parts. In the figure, there is a certain gap between the cover plate 1 and the square block 2. The end grinding screw 3 shown in FIG. 2 and the finely adjustable horizontal position of the square block 2 shown in FIG. 3 are innovations of the present invention. As shown in Fig. 1 , the screw 3 of this embodiment is rotated into the threaded hole in the cover plate 1, and is in contact with the square block 2, and the punch 4 is fixed in the square block. To check the alignment between the punch and die, use two layers of white paper with carbon paper in the middle, place it on the upper part of the die 5, press down on the punch 4 to make it enter the die 5, and cut the white paper and the carbon paper. Out of the small hole, there will be two round holes printed by carbon paper on the white paper, the outer one is the imprint produced by the reaction force of the inner wall of the die 5, and the inner one is the imprint produced by the contact with the edge of the outer wall of the punch 4, If the two imprints are concentric circles, as shown in Figure 4, 6 means that the neutrality is better. If they are not concentric circles, as shown in Figure 4, 7, you need to tighten the screw 3 on the same side as the direction closer to the two circles. , the small movement of the punch 4 is realized through the elastic deformation of the square block 2 itself.

Facts have proved that the fine-tuning device in this embodiment is feasible, reduces the processing cost due to high processing accuracy, saves processing time, and realizes the adjustment of coaxiality more conveniently and quickly.

The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the present invention without creative efforts. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art shall be within the scope of protection defined by the claims.

Claims (6)

1. A fine-tuning mechanism of a miniature piece extrusion die, wherein, comprising a square block and a cover plate matched with its shape, the punch is fixed at the center of the square block, and the cover plate is provided with a pair of , symmetrical and evenly distributed first screw holes, the square block has four peripheral surfaces, and each of the peripheral surfaces is provided with a second screw hole; the screw corresponding to the first screw hole passes through the first screw hole A screw hole is in contact with the peripheral surface of the square block and penetrates into the second screw hole, and the square block can move slightly as the screw is screwed in; the end of the screw is a flat end ; The punch is matched with the die; The fine-tuning mechanism of the micro-part extrusion die is configured to: check the alignment between the concave die and the male die by sandwiching the carbon paper between two layers of white paper, that is, to sandwich the carbon paper between two layers of white paper. The two layers of white paper are placed on the upper part of the concave mold, the punch is pressed down, the white paper enters the concave mold, small holes are cut out of the white paper and the carbon paper, and the There will be two round holes printed on the white paper by the carbon paper, the outer one is due to the impression produced by the reaction force of the inner wall of the die, and the inner one is due to the contact of the outer wall edge of the punch. If the two imprints are concentric circles, it means that the neutrality is good. If they are not concentric circles, you need to tighten the screws on the same side as the two circles. The elastic deformation of the square block itself realizes the The slight movement of the above-mentioned punch. 2. The micro-adjustment mechanism of the extrusion die for micro-parts as claimed in claim 1, wherein a clearance fit is used between the square block and the cover plate. 3. The fine-tuning mechanism of the extrusion die for micro-parts as claimed in claim 1, wherein the square block can be replaced by a polygonal block. 4. The micro-adjustment mechanism of the extrusion die for micro-components according to claim 1, wherein the screw is threadedly engaged with the first screw hole. 5. The fine-tuning mechanism of the extrusion die for micro-components as claimed in claim 1, wherein there are four each of the first screw holes, the second screw holes and the screws. 6. The micro-adjustment mechanism of the extrusion die for micro-components according to claim 1, wherein the screw hole is perpendicular to the peripheral surface of the square block.