CN212666619U

CN212666619U - Barrel screw for injection molding

Info

Publication number: CN212666619U
Application number: CN202021164562.7U
Authority: CN
Inventors: 孔琪斌
Original assignee: Zhoushan Dinghai New Machinery Manufacturing Co ltd
Current assignee: Zhoushan Dinghai New Machinery Manufacturing Co ltd
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2021-03-09
Anticipated expiration: 2030-06-22

Abstract

The utility model discloses a barrel screw rod of usefulness of moulding plastics, the melting section is equipped with main spiral shell groove and vice spiral shell groove, be equipped with the clearance No. one between mixing section and the mixing section No. two, the circumference equipartition of mixing section has a recess that the slope set up, the circumference equipartition of mixing section No. two has No. two recesses that the slope set up at least, the adjacent recess of horizontal direction is equipped with the clearance No. two, a recess length is greater than the recess No. two, adjacent recess and No. two recesses, the adjacent recess of horizontal direction all is crisscross the staggered arrangement No. two recesses. The melted plastic enters the auxiliary screw groove to be pushed forward, the unmelted plastic is further compressed by the main screw groove to achieve better compaction and plasticizing effects, then enters the homogenizing section to be further plasticized, the melt enters the first mixing section to be subjected to primary flow distribution and stirring, and then enters the second mixing section to be rapidly and repeatedly stirred, so that the tissue components of the product are more uniform, and the product quality is improved.

Description

Barrel screw for injection molding

Technical Field

The utility model relates to an injection moulding device technical field, concretely relates to barrel screw rod of usefulness of moulding plastics.

Background

The screw is one of the key parts of the injection molding machine, rotates in a cylinder of the injection molding machine, and has the main functions of conveying, compacting, melting and plasticizing raw materials into a molten state and extruding molten plastic fluid to advance so as to finish injection molding.

SUMMERY OF THE UTILITY MODEL

For overcoming the not enough of background art, the utility model provides a barrel screw rod of usefulness of moulding plastics has solved the raw materials that flow in the screw rod and has melted the problem that thoroughly leads to product quality to descend.

The utility model adopts the technical scheme as follows:

the utility model provides a barrel screw rod of usefulness of moulding plastics, includes barrel and screw rod main part, the screw rod main part is equipped with compression section, melting section, homogenization section, mixing section and goes out the material section along direction of feed in proper order, the melting section is equipped with main spiral shell groove and vice spiral shell groove, mixing section includes a mixing section and No. two mixing sections, be equipped with a clearance between a mixing section and No. two mixing sections, the circumference equipartition of a mixing section has a recess that the slope set up, the circumference equipartition of No. two mixing sections has No. two recesses that the slope set up at least, and No. two recesses that the horizontal direction is adjacent are equipped with No. two clearances, a recess length is greater than No. two recesses, and No. two recesses that adjacent recess and No. two recesses of horizontal direction are all crisscross the staggered arrangement.

And the adjacent first grooves are arranged in a staggered manner.

The width of the auxiliary screw groove is gradually increased from the two ends of the melting section to the middle.

The ejection of compact section is equipped with the non-return ring that prevents the melt backward flow.

The screw rod main part is equipped with the axle center hole, the downthehole wet return that is equipped with of axle center, the axle center hole is connected with the inlet tube.

And a cooling channel is arranged on the machine barrel.

The utility model has the advantages that:

the melted plastic enters the auxiliary screw groove to be pushed forward, the unmelted plastic is further compressed by the main screw groove to achieve better compaction and plasticizing effects, then enters the homogenizing section to be further plasticized, the melt enters the first mixing section to be subjected to primary flow distribution and stirring, and then enters the second mixing section to be rapidly and repeatedly stirred, so that the tissue components of the product are more uniform, and the product quality is improved.

Drawings

Fig. 1 is a schematic diagram of the present invention.

Fig. 2 is a schematic view of the screw of the present invention.

Fig. 3 is a schematic diagram of the mixing section and the discharging section of the present invention.

Fig. 4 is a schematic view of the screw cooling of the present invention.

The device comprises a machine barrel 1, a screw main body 2, a compression section 3, a melting section 4, a main screw groove 41, an auxiliary screw groove 42, a homogenizing section 5, a mixing section 6, a first mixing section 61, a second mixing section 62, a first gap 63, a first groove 64, a second groove 65, a second gap 66, a discharging section 7, a non-return ring 8, a shaft center hole 9, a water return pipe 10, a water inlet pipe 11 and a cooling channel 12.

Detailed Description

The invention will be further explained with reference to the following embodiments and drawings:

in the embodiment, as shown in fig. 1, 2 and 3, a barrel screw for injection molding comprises a barrel 1 and a screw body 2, the screw main body 2 is sequentially provided with a compression section 3, a melting section 4, a homogenizing section 5, a mixing section 6 and a discharging section 7 along the feeding direction, the melting section 4 is provided with a main screw groove 41 and an auxiliary screw groove 42, the mixing section 6 comprises a first mixing section 61 and a second mixing section 62, a first gap 63 is arranged between the first mixing section 61 and the second mixing section 62, first grooves 64 which are obliquely arranged are uniformly distributed on the first mixing section 61 in the circumferential direction, at least two groups of obliquely arranged second grooves 65 are uniformly distributed in the circumferential direction of the second mixing section 62, a second gap 66 is arranged between the horizontally adjacent second grooves 65, the length of the first groove 64 is larger than that of the second groove 65, and the adjacent first groove 64 and the second groove 65 as well as the adjacent second groove 65 in the horizontal direction are arranged in a staggered manner. The melted plastic enters the auxiliary screw groove 42 to be pushed forward, the unmelted plastic is further compressed through the main screw groove 41, better compaction and plasticizing effects are achieved, then the melted plastic enters the homogenizing section 5 to be further plasticized, the melt enters the first mixing section 61 to be subjected to primary shunting stirring and then enters the second mixing section 62, and a plurality of groups of second grooves 65 with short lengths can be used for quickly and repeatedly stirring the melt, so that the tissue components of the product are more uniform, and the product quality is improved.

In an embodiment, as shown in fig. 1, 2, 3, and 4, adjacent first grooves 64 are arranged in a staggered manner. The melt enters the first grooves 64 which are arranged in a staggered mode, and the melt mixing effect is better.

In the embodiment, as shown in fig. 1 and 2, the width of the secondary screw groove 42 gradually increases from the two ends of the melting section 4 to the middle. The width of the auxiliary screw groove 42 along the feeding direction of the screw main body 2 is gradually increased, so that the melt enters the auxiliary screw groove 42, and then the melt is gradually decreased to accelerate the melt flow for rapid discharging.

In the embodiment, as shown in fig. 1, 2, 3 and 4, the discharging section 7 is provided with a check ring 8 for preventing the melt from flowing backward. Can effectively prevent melt from flowing back and ensure the stable supply of materials during injection molding.

In the embodiment, as shown in fig. 1 and 4, the screw body 2 is provided with a shaft hole 9, a water return pipe 10 is arranged in the shaft hole 9, and the shaft hole 9 is connected with a water inlet pipe 11; the machine barrel 1 is provided with a cooling channel 12. Lead to the cooling water in the barrel 1, can prevent that the material from leading to the fact the decomposition because of the plastify high temperature, lead to the cooling water and circulate in screw rod main part 2 inside simultaneously, guarantee that the temperature between 2 outer walls of screw rod and the 1 inner wall of barrel is all even, and the phenomenon that different position temperatures are different can not appear in the fuse-element, guarantees product quality.

It is obvious that the above embodiments of the present invention are only examples for illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. There is no need or no way to give poor examples of all embodiments. And that such obvious changes and modifications are within the scope of the present invention as defined by the appended claims.

Claims

1. The utility model provides a barrel screw rod of usefulness of moulding plastics, includes barrel (1) and screw main part (2), its characterized in that: screw rod main part (2) are equipped with compression section (3), melting section (4), homogenization section (5), mixing section (6) and play material section (7) in proper order along feed direction, melting section (4) are equipped with main spiral shell groove (41) and vice spiral shell groove (42), mixing section (6) are including a mixing section (61) and No. two mixing sections (62), be equipped with a clearance (63) between a mixing section (61) and No. two mixing sections (62), the circumference equipartition of a mixing section (61) has a recess (64) that the slope set up, the circumference equipartition of No. two mixing sections (62) has No. two recesses (65) that two sets of slopes set up at least, and No. two recesses (65) that the horizontal direction is adjacent are equipped with No. two clearances (66), a recess (64) length is greater than No. two recesses (65), adjacent recess (64) and No. two recesses (65), The second grooves (65) adjacent to each other in the horizontal direction are arranged in a staggered manner.

2. A barrel screw for injection molding as claimed in claim 1, wherein: the adjacent first grooves (64) are arranged in a staggered mode.

3. A barrel screw for injection molding as claimed in claim 1, wherein: the width of the auxiliary screw groove (42) is gradually increased from the two ends of the melting section (4) to the middle.

4. A barrel screw for injection molding as claimed in claim 1, wherein: the discharging section (7) is provided with a non-return ring (8) for preventing melt from flowing back.

5. A barrel screw for injection molding as claimed in claim 1, wherein: the screw rod main part (2) is provided with a shaft center hole (9), a water return pipe (10) is arranged in the shaft center hole (9), and the shaft center hole (9) is connected with a water inlet pipe (11).

6. A barrel screw for injection molding as claimed in claim 1, wherein: and a cooling channel (12) is arranged on the machine barrel (1).