Trimming mechanism of automatic feeding, trimming and water gap shearing machine for in-mold decorative plastic injection part

Abstract

The invention discloses a trimming mechanism of an automatic feeding, trimming and water gap shearing machine for an in-mold decorative plastic injection part. The trimming mechanism comprises a rack,a first portal frame, a second portal frame, a first linear driving module, a guide rail, a second linear driving module, a trimming cutter assembly, a third linear driving module, a sensor, a clamping jaw air cylinder installing block, a clamping jaw air cylinder, a first static pressure air blowing device and a first scrap collecting box The first scrap collecting box communicates with an air sucking device of the outside. The trimming cutter assembly comprises a fixing plate, a linear module installing plate, at least one reinforcing rib, a linear module, a motor installing base assembly,a motor, a flexible cutter and an air source for pumping air into the flexible cutter. The flexible cutter is of a breathable structure covered with breathable holes. According to the mechanism, automatic trimming operation is carried out on a plastic shell, it is ensured that unrecoverable deformation of the plastic shell is avoided, and the plastic shell is not damaged by sweeps, and while the appearance precision of the plastic shell is guaranteed, the requirement of the plastic shell for attractiveness is met.

Description

technical field [0001] The invention relates to the field of automatic processing of plastic parts, in particular to a trimming mechanism of an automatic feeding, trimming and trimming nozzle machine for in-mold decorative injection molded parts. Background technique [0002] There are many products on the market that have high requirements on appearance, especially household appliances, such as smart sweepers. The contours of the outer casing after injection molding are generally rough. Due to the generally poor injection molding accuracy, the assembly accuracy of the outer casing is also very low. Poor, interference or hand cutting often occurs after assembly, seriously affecting the appearance of the product, so the shell often requires secondary processing, that is, the outline of the plastic shell needs to be trimmed. [0003] In the prior art, most of the trimming operations are performed manually, and manual trimming has the technical problems of poor trimming quality...

AI Technical Summary

Problems solved by technology

[0002] There are many products on the market that have high requirements on appearance, especially household appliances, such as smart sweepers. The contours of the outer casing after injection molding are generally rough. Due to the generally poor injection molding accuracy, the assembly accuracy of the outer casing is also very low. Poor, interference or hand cutting often occurs after assembly, seriously affecting the appearance of the product, so the shell often requires secondary processing, that is, the outline of the plastic shell needs to be trimmed

[0003] In the prior art, most of the trimming operations are performed manually, and manual trimming has technical problems such as poor trimming quality, low trimming efficiency, and unstable trimming pass rate

Of course, there are also a small number of automatic equipment for trimming, but these devices use high-rigidity tools to trim the contour of the plastic shell. When the high-rigidity tool trims the plastic shell, on the one hand, the plastic shell The instantaneous force on each position of the outline of the outline will be very large, and the plastic shell is prone to large irreversible deformation, which still leads to the problem of poor assembly accuracy of the plastic shell, which seriously affects the appearance of the product. On the one hand, the chips produced by the high-rigidity tool during edge trimming will splash around, which has a high probability of damaging the appearance of the plastic casing, resulting in a low pass rate of the product, which does not meet the product's appearance requirements

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