An improved structure of a disc punching die

Abstract

The invention discloses an improved structure of an optical disc punching mold, comprising a mold support, wherein a punching inner mold is fixedly arranged on one side of the mold support, the punching inner mold comprises a small-diameter front segment and a large-diameter rear segment which are coaxial with each other, a water inlet channel communicated with a water inlet hole of the mold support is arranged in the side wall of the large-diameter rear segment, a punching outer mold is sleeved on the small-diameter front segment in a connecting manner, the rear end surface of the punching outer mold is connected with the front end surface of the large-diameter rear segment in a supporting manner, an accommodating cavity with one open end is arranged between the punching outer mold and the small-diameter front segment, the open end of the accommodating cavity is communicated with the water inlet channel. According to the improved structure of the optical disc punching mold, the length of the punching outer mold is shortened, the punching outer mold is enabled to be only sleeved on the outer surface of the small-diameter front segment in a connecting manner, so that the side wall of the large-diameter rear segment can be manufactured thicker, the overall outline size of the punching mold cannot be affected, and as the side wall of the large-diameter rear segment is thicker, the improved structure can bear greater external force without causing the phenomena of deformation, breaking and water leakage.

Description

technical field [0001] The invention relates to a disc mold. Background technique [0002] At present, during the production process of the punching die for optical discs, it is necessary to continuously perform reciprocating punching movements, tens of thousands of times a day. Due to the frequent punching times, the punching dies are prone to heat, so the punching dies must be equipped with The cooling water channel cools it to ensure the punching quality; at the same time, the punching die bears a relatively large external force during the punching process, which makes the punching die easy to wear. [0003] refer to figure 1 with figure 2 , the existing punching die includes a die support 1', and one end of the die support 1' is fixedly provided with a punching inner die 2', and the punching inner die 2' includes a coaxial small-diameter front section 21' And the large-diameter rear section 22', the inside of the side wall of the large-diameter rear section 22' is pr...

AI Technical Summary

Problems solved by technology

[0002] At present, during the production process of the punching die for optical discs, it is necessary to continuously perform reciprocating punching movements, tens of thousands of times a day. Due to the frequent punching times, the punching dies are prone to heat, so the punching dies must be equipped with The cooling water channel cools it to ensure the punching quality; at the same time, the punching die bears a relatively large external force during the punching process, which makes the punching die easy to wear

[0003] refer to figure 1 and figure 2 , the existing punching die includes a die support 1', and one end of the die support 1' is fixedly provided with a punching inner die 2', and the punching inner die 2' includes a coaxial small-diameter front section 21' And the large-diameter rear section 22', the inside of the side wall of the large-diameter rear section 22' is provided with a water inlet 220' that communicates with the water inlet hole 10' in the mold support 1', and the outer surface of the small-diameter front section 21' A punching outer die 3' is sleeved on the top, and the punching outer die 3' extends backwards and covers the middle rear part of the large-diameter rear section 22'. The punching outer die 3' and the small-diameter front section 21' A cavity 4' with an open end is arranged between them, and the open end of the cavity 4' communicates with the water inlet 220'. Since the overall dimensions of the punching die are fixed, when the large-diameter rear section 22' When the outer surface is sleeved with a punching outer mold 3', the side wall of the large-diameter rear section 22' must be made thinner to ensure that the overall size of the optical disc mold does not increase. When the side wall of the large-diameter rear section 22' After the wall becomes thinner, the side wall of the large-diameter rear section 22' is easily squeezed and deformed due to the large external force that the punching die bears during the working process, resulting in cracking and water leakage, and even fracture of the large-diameter rear section 22'. phenomenon, thus seriously affecting the normal production of discs

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