Vacuum-exhaust type screw charging barrel

A technology of vacuum exhaust and screw, applied in the field of plastic particle pushing device, to achieve the effect of good exhaust effect

CN111409241APending Publication Date: 2020-07-14乐清市联盛电子科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2020-07-14

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Abstract

The invention discloses a vacuum-exhaust type screw charging barrel. The charging barrel comprises a screw channel arranged in the charging barrel and a feeding screw which is arranged in the screw channel and is provided with a metering feeding plasticizing section, a forced plasticizing section, a feeding decompression plasticizing section and a forced feeding plasticizing section, wherein the charging barrel is provided with a feeding hole and an exhaust opening which communicates with the screw channel and is positioned at the feeding decompression plasticizing section, the charging barrelfurther comprises a partition plate, an exhaust hole, a mounting seat and a containing space, and the partition plate is arranged in the exhaust opening and can completely divide the exhaust openinginto an area above the partition plate and an area below the partition plate; the exhaust hole is formed in the partition plate in a penetrating manner; the mounting seat is arranged on the partitionplate and is provided with a mounting hole communicating with the exhaust hole; and the containing space is located below the partition plate and can be used for temporarily storing plastic conveyed by the feeding screw. According to the charging barrel, by arranging the partition plate and the containing space, the plastic can be blocked and temporarily stored, the plastic can be effectively prevented from being discharged out of the exhaust opening, and the good exhaust effect is achieved.
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Description

technical field

[0001] The invention relates to the technical field of plastic particle pushing devices, in particular to a vacuum exhaust type screw barrel. Background technique

[0002] During the extrusion process of plastic, there will be volatile gas and water vapor, which need to be discharged before injection. However, most of the existing vacuum exhaust screw barrels are equipped with an exhaust port and an exhaust pipe on it. , and then the gas is discharged through the vacuum pump.

[0003] See the Chinese patent application number 201410252302.8, which provides three grooves on the inner wall of the barrel, and installs an electric heating coil above the exhaust port and the lower end of the vacuum pump, so that when the injection molding machine stops working, the molten plastic at the exhaust port will not If it solidifies and blocks the exhaust port, it will not affect the next work of the injection molding machine.

[0004] In the actual production process, ...

Examples

Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] like Figure 1-4 As shown, a vacuum exhaust type screw barrel includes a screw channel 4 arranged in the barrel 1 and a screw channel 4 which is arranged in the screw channel 4 and has a metering feeding plasticizing section 51, a strong pressure plasticizing section 52, a feeding decompression plasticizing section The feeding screw 5 of the plasticizing section 53 and the forced feeding plasticizing section 54, the barrel 1 has a feed port 2 and an exh...