Flexible glue feeding mechanism

Abstract

The invention discloses a flexible glue feeding mechanism applied to double-color molds. The flexible glue feeding mechanism comprises an ox horn insert core, an ox horn flow channel, an insert core and an ejection pin; the ox horn insert core is formed by splicing two insert core units; the ox horn flow channel is arranged on a joint part of the two insert core units, the shape of the ox horn flow channel is an ox horn-shaped smooth curve-shaped cone, and the front end of the ox horn flow channel is connected with a product; the upper end of the insert core penetrates through the ox horn insert core and is matched with the joint part of the two insert core units so as to form the ox horn flow channel, and the insert core is arranged at the rear end of the ox horn flow channel; the upper part of the ejection pin penetrates through the insert core, and the ejection pin is tightly matched with the insert core. The mechanism is suitable for various double-color molds, can be used in the process of opening a new mold and can be also used in the process of repairing the mold; the insert core and the ejection pin are tightly matched, the tolerance required by ejection is guaranteed, and a phenomenon that the ejection pin is blocked and ruptured due to falling of crushed materials is greatly avoided.

Description

【Technical field】 [0001] The invention relates to a glue-feeding mechanism for horns in a mould, in particular to a glue-feeding mechanism for injecting soft glue into a two-color mould. 【Background technique】 [0002] In the production of plastic products, the horn-injected glue-feeding mechanism is generally used. Such as figure 1 Shown is the prior art horn insert glue feeding mechanism, which includes two horn insert units 10, 20 and a thimble 30, wherein the two horn insert units 10 and 20 are spliced ​​and assembled together, so The upper end of the thimble 30 is pierced at the glue-in point of the junction of the horn-injection sub-units 10 and 20 . [0003] Since it is necessary to assemble the two ox horn entry subunits 10 and 20 with the thimble 30 when matching the mold, the fitter generally cannot fit them tightly during installation, resulting in the thimble 30 and the ox horn entry subunit 10 and the thimble. There will be a gap between the 20 to generate de...

AI Technical Summary

Problems solved by technology

However, in the second shot of the soft glue, because the soft glue is extremely viscous, the thimble 30 is likely to be stuck and broken when ejecting, and the mold needs to be removed to reassemble the thimble 30, which will seriously affect the mass production of subsequent products; At the same time, because the side 40 of the horn entry unit is a straight face, there will be burrs near the injection point of the soft glue, and burrs in the runner.

[0004] In view of this, it is necessary to provide a glue feeding mechanism, which can solve the problem of jamming and breaking of the thimble due to the falling of the broken material when the product is formed by the two-color mold, and enable the thimble to eject the product smoothly.

Images