CN216329872U

CN216329872U - Screw rod for reinforcing pure-color shell surface injection molding

Info

Publication number: CN216329872U
Application number: CN202121137624.XU
Authority: CN
Inventors: 沈琪; 艾贺春; 唐勤宝; 姚海峰
Original assignee: Zhejiang Jiacheng Machinery Co ltd
Current assignee: Zhejiang Jiacheng Machinery Co ltd
Priority date: 2021-05-26
Filing date: 2021-05-26
Publication date: 2022-04-19
Anticipated expiration: 2031-05-26

Abstract

The screw for enhancing the pure-color shell surface injection molding comprises a screw body, a rod handle, a clamping groove, a straight section, a threaded connection section, a feeding hole, a compression section, a metering section, a groove section, a main screw ridge, an auxiliary screw thread section, an auxiliary screw ridge, a solid phase groove and a liquid phase groove. The utility model has the advantages that: aiming at the problems that the glass fiber has high hardness and corrosive gas is generated after the auxiliary agent is volatilized at high temperature, the surface of the screw is subjected to nitriding treatment, and the top of the screw ridge is subjected to spray welding to form double alloy, so that the wear resistance and corrosion resistance of the screw are enhanced, and the service life of the screw is prolonged; the materials are melted and mixed uniformly and fully by designing structures such as gradual change, separation, end enclosure and the like, and the toughness and the surface performance of the product are improved.

Description

Screw rod for reinforcing pure-color shell surface injection molding

Technical Field

The utility model relates to a screw for enhancing pure-color shell surface injection molding, and belongs to the technical field of screws.

Background

The PP fiber-added material is a very common glass fiber reinforced material, and under the conditions of high temperature, long time and low load, the PP fiber-added material cannot deform, so that the product has good dimensional stability, and the PP fiber-added material is widely used for manufacturing automobile parts, sports equipment, high-grade large-scale household appliance panels and the like. In addition, the renewable utilization characteristic of the glass fiber reinforced PP enables the materials to have wider application prospects today with increasingly strict environmental protection requirements. However, when the PP fiber-added material is actually produced and injection molded, particularly when the PP fiber-added material is injection molded by aiming at a pure-color shell surface, the phenomena of poor surface properties such as poor product toughness, rough and smooth product surface, speckles, black lines, yellowing and the like exist, and the product quality and the yield are seriously influenced. Therefore, aiming at the process characteristics of the PP + glass fiber in the plasticizing process, the development of the screw for reinforcing the PP + glass fiber and blending additives is urgently needed to improve the stability of the product quality.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a screw for reinforcing pure-color shell surface injection molding.

The utility model aims to solve the problems that the existing PP fiber-added material has the defects of low product purity and unstable product quality when the pure-color shell surface is actually produced and injection molded.

In order to realize the purpose of the utility model, the technical scheme adopted by the utility model is as follows:

reinforcing pure look shell surface is moulded plastics and is used screw rod, including screw rod body, handle, draw-in groove, straight section, threaded connection section, feeding section, feed inlet, compression section, measurement section, ditch groove section, main spiral shell arris, vice screw thread section, vice spiral shell arris, solid phase groove and liquid phase groove, characterized by: be equipped with the pole handle on the screw rod body, be equipped with the draw-in groove on the pole handle, be equipped with straight section behind the draw-in groove, straight section end is equipped with the threaded connection section, be equipped with the feeding section behind the threaded connection section, be equipped with the feed inlet on the feeding section, the feeding section end is equipped with the compression section, the compression section end is equipped with the measurement section, the measurement section end is equipped with the ditch groove section, be equipped with the multiunit slot on the ditch groove section, the feeding section, be equipped with main spiral shell arris on compression section and the measurement section, be equipped with the minor thread section on compression section and the measurement section, be equipped with vice spiral shell arris in the minor thread section, be equipped with solid phase groove and liquid phase groove in turn in the minor thread section.

Further, the screw body is hardened and tempered with HB250-280, the surface nitrided layer is 0.5mm, and the hardness is 900 HV; the main screw edge and the auxiliary screw edge are spray welded with double alloy of 0.8-1.0mm and the hardness HRC 58-62.

Furthermore, the length-diameter ratio of the screw body is 26-29, and the compression ratio is 2-3.

Further, the liquid phase groove is gradually shallow from the metering section to the feeding section to be as high as the secondary screw ridge; the solid phase groove is gradually deepened to be as deep as the metering section from the feeding section to the metering section.

Furthermore, the height of the main screw ridge is greater than that of the auxiliary screw ridge, and the height difference of the double screw ridges is 2.5 mm.

Furthermore, the screw pitch of the main screw rib on the compression section is equal to that of the auxiliary screw rib.

Furthermore, the screw pitch of the main screw rib on the compression section is larger than that of the main screw rib on the feeding section.

The utility model has the advantages that: aiming at the problems that the glass fiber has high hardness and corrosive gas is generated after the auxiliary agent is volatilized at high temperature, the surface of the screw is subjected to nitriding treatment, and the top of the screw ridge is subjected to spray welding to form double alloy, so that the wear resistance and corrosion resistance of the screw are enhanced, and the service life of the screw is prolonged; the materials are melted and mixed uniformly and fully by designing structures such as gradual change, separation, end enclosure and the like, and the toughness and the surface performance of the product are improved.

Drawings

FIG. 1 is a schematic view of the overall structure of a screw for injection molding of reinforced solid-colored shell surfaces;

FIG. 2 is a cross-sectional view of a neck A-A of a screw for injection molding of enhanced solid-color shell faces;

FIG. 3 is a cross-sectional view of the main flight B-B of a screw for injection molding of enhanced solid-color shell surfaces;

FIG. 4 is a cross-sectional view of the primary and secondary flights C-C of a screw for enhanced solid-color shell injection molding;

FIG. 5 is an enlarged view of a groove segment of a screw for injection molding of reinforced solid-color shell surfaces;

FIG. 6 is a schematic cross-sectional view of a groove segment D-D of a screw for enhanced solid-color shell injection molding;

FIG. 7 is a cross-sectional view of a groove E-E of a screw for enhanced solid-color shell injection molding;

in the figure: 1. the screw comprises a screw body 2, a rod handle 3, a clamping groove 4, a straight section 5, a threaded connection section 6, a feeding section 7, a feeding hole 8, a compression section 9, a metering section 10, a groove section 101, a groove 11, a main screw ridge 12, an auxiliary screw thread section 13, an auxiliary screw ridge 14, a solid phase groove 15 and a liquid phase groove.

Detailed Description

The utility model is further described with reference to the following figures and examples.

The screw for enhancing the injection molding of the pure-color shell surface comprises a screw body 1, a rod handle 2, a clamping groove 3, a straight section 4, a threaded connection section 5, a feeding section 6, a feeding port 7, a compression section 8, a metering section 9, a groove section 10, a main screw ridge 11, an auxiliary screw thread section 12, an auxiliary screw ridge 13, a solid phase groove 14 and a liquid phase groove 15, wherein the rod handle 2 is arranged on the screw body 1 and used for providing fixation, the clamping groove 3 is arranged on the rod handle 2 and used for improving the fixed installation, the straight section 4 is arranged behind the clamping groove 3 and used for providing connection, the threaded connection section 5 is arranged at the tail end of the straight section 4 and used for improving the threaded connection, the feeding section 6 is arranged behind the threaded connection section 5 and used for feeding, the feeding port 7 is arranged on the feeding section 6 and used for feeding, the compression section 8 is arranged at the tail end of the feeding section 6 and used for melting materials, the metering section 9 is arranged at the tail end of the compression section and used for extruding materials, the groove section 10 is arranged at the tail end of the metering section 9, the screw-type material separating device is used for separating and converging materials, a plurality of groups of grooves 101 are formed in the groove section 10 and used for separating and converging materials, main screw ridges 11 are arranged on the feeding section 6, the compression section 8 and the metering section 9 and are screw rod component parts, auxiliary screw thread sections 12 are arranged on the compression section 8 and the metering section 9 and are used for separating materials, auxiliary screw ridges 13 are arranged on the auxiliary screw thread sections 12 and are used for separating materials, and solid phase grooves 14 and liquid phase grooves 15 are alternately arranged on the auxiliary screw thread sections 12 and are used for separating materials.

Further, the screw body 1 is hardened and tempered by HB250-280, the surface nitrided layer is 0.5mm, the hardness is 900HV, the double alloy of the main screw edge 11 and the auxiliary screw edge 13 is spray welded by 0.8-1.0mm, and the hardness is HRC 58-62.

Furthermore, the length-diameter ratio of the screw body 1 is 26-29, and the compression ratio is 2-3.

Further, the liquid phase groove 15 is gradually shallow from the metering section 9 to the feeding section 6 to be as high as the secondary screw ridge 13; the solid phase groove 14 is gradually deeper from the feeding section 6 to the metering section 9 to be as deep as the metering section 9.

Furthermore, the height of the main screw ridge 11 is greater than that of the auxiliary screw ridge 13, the height difference of the double screw ridges is 2.5mm, and five main threads and five auxiliary threads are separated.

Furthermore, the pitch of the primary screw flight 11 on the compression section 8 is equal to the pitch of the secondary screw flight 13.

Furthermore, the pitch of the main screw flight 11 on the compression section 8 is greater than the pitch of the main screw flight 11 on the feed section 6.

The using method comprises the following steps: after the screw body 1 is installed, adjusting the processing temperature of the machine to be close to the ideal processing temperature range of the processed material, and starting the machine when the screw body 1 reaches the preset temperature; the screw body 1 rotates in the barrel, after materials enter the barrel from the hopper, the materials firstly reach the feeding section 6 from the feeding hole 7, and the materials are pushed to move forwards in the feeding section 6 by the rotation of the screw body 1; then the material enters a compression section 8, a solid phase formed by material particles in the compression section 8 is gradually converted into a liquid phase under the combined action of heat conduction and viscous heat dissipation, the two phases coexist, the solid material and the liquid material are separated through a solid phase groove 14 and a liquid phase groove 15, the liquid material is discharged from a discharge port, and the solid material is blocked in the solid phase groove 14 to be further compacted and plasticized; finally, the melted liquid material enters the metering section 9, is subjected to multiple shunting and converging through a plurality of groups of grooves 101 in the groove section 10, changes the flowing direction, homogenizes the components of the melt and the temperature, and is finally extruded and granulated through a screw head.

Claims

1. Reinforcing pure look shell surface is moulded plastics and is used screw rod, including screw rod body (1), pole handle (2), draw-in groove (3), straight section (4), threaded connection section (5), feeding section (6), feed inlet (7), compression section (8), measurement section (9), ditch groove section (10), main spiral shell arris (11), vice screw thread section (12), vice spiral shell arris (13), solid phase groove (14) and liquid phase groove (15), characterized by: the screw rod body (1) is provided with a rod handle (2), the rod handle (2) is provided with a clamping groove (3), a straight section (4) is arranged behind the clamping groove (3), the tail end of the straight section (4) is provided with a threaded connection section (5), a feeding section (6) is arranged behind the threaded connection section (5), the feeding section (6) is provided with a feeding hole (7), the tail end of the feeding section (6) is provided with a compression section (8), the tail end of the compression section (8) is provided with a metering section (9), the tail end of the metering section (9) is provided with a groove section (10), the groove section (10) is provided with a plurality of groups of grooves (101), and the feeding section (6), the compression section (8) and the metering section (9) are provided with main screw ridges (11), the compression section (8) and the metering section (9) are provided with auxiliary screw thread sections (12), the auxiliary screw thread sections (12) are provided with auxiliary screw ridges (13), and the auxiliary screw thread sections (12) are alternately provided with solid phase grooves (14) and liquid phase grooves (15).

2. The screw of claim 1, wherein: the screw body (1) is hardened and tempered with HB250-280, the surface nitrided layer is 0.5mm, and the hardness is 900 HV; the main screw edge (11) and the auxiliary screw edge (13) are spray welded with double alloy of 0.8-1.0mm and the hardness HRC 58-62.

3. The screw of claim 1, wherein: the length-diameter ratio of the screw body (1) is 26-29, and the compression ratio is 2-3.

4. The screw of claim 1, wherein: the liquid phase groove (15) is gradually shallow from the metering section (9) to the feeding section (6) to be as high as the secondary screw ridge (13); the solid phase groove (14) is gradually deepened to be as deep as the metering section (9) in the direction from the feeding section (6) to the metering section (9).

5. The screw of claim 1, wherein: the height of the main screw ridge (11) is greater than that of the auxiliary screw ridge (13), and the height difference of the double screw ridges is 2.5 mm.

6. The screw of claim 1, wherein: the screw pitch of the main screw rib (11) on the compression section (8) is equal to that of the auxiliary screw rib (13).

7. The screw of claim 1, wherein: the pitch of the main screw rib (11) on the compression section (8) is larger than that of the main screw rib (11) on the feeding section (6).