CN214027044U

CN214027044U - Combined device of flat double-screw machine barrel

Info

Publication number: CN214027044U
Application number: CN202022747959.5U
Authority: CN
Inventors: 包明刚; 包奇斌
Original assignee: Zhejiang Guangming Plastics Machinery Co ltd
Current assignee: Zhejiang Guangming Plastics Machinery Co ltd
Priority date: 2020-11-24
Filing date: 2020-11-24
Publication date: 2021-08-24
Anticipated expiration: 2030-11-24

Abstract

The utility model provides a composite set of flat twin-screw barrel, including flat twin-screw barrel and screw rod, flat twin-screw barrel includes that barrel one section and barrel two sections, the cavity heat jacket has been put to the cover on the one section outer wall of barrel between flange and feed inlet, the winding has the temperature regulation pipe on the two sections outer walls of barrel near the discharge gate, the spiral shell arris includes the feed zone, melting section and ejection of compact section, ejection of compact section is including ejection of compact one section and ejection of compact two sections, the spiral shell arris width of ejection of compact two sections is less than the spiral shell arris width of one section of ejection of compact, the one section left end of ejection of compact and the flat twin-screw barrel at ejection. The utility model has the advantages that: the material feeding is smooth; the temperature control pipe can adjust the heating temperature of the corresponding position of the double flat-machine cylinders, so that the material is kept in a stable discharging temperature range during discharging, the stable discharging temperature is helpful for outputting finished material meeting production requirements for fine extrusion processing, and the discharging effect is improved.

Description

Combined device of flat double-screw machine barrel

Technical Field

The utility model relates to an injection molding machine preparation technical field especially indicates a composite set of flat twin-screw barrel.

Background

The prior Chinese utility model patent with the application number of CN201822148982.5 entitled "a novel high-pressure strong plasticizing flat double-barrel screw" discloses a novel high-pressure strong plasticizing flat double-barrel screw, which comprises a barrel assembly, wherein a screw cavity is formed inside the barrel assembly; the number of the screw rod bodies is two, and the two screw rod bodies are arranged in the screw rod cavity; a flange assembled with the barrel assembly and the screw body; and the screw seat is formed in the middle of the machine barrel assembly. The utility model discloses a reasonable feeding section is taken to the screw rod, cuts mixing section, and the material can be eliminated at screw rod inside operation to the plastify sudden change section and extremely be sent, and the viscous flow state of user in process of production is made to the oil circulating device, is difficult for producing the poison gas, and too early plastify avoids high temperature, high shear, the high current, and the start time is long. Therefore, the screw can be used for molding various complicated plate and section products under the action of the pressure of the die. However, when the barrel screw is used for processing materials, the material feeding part cannot enter a melting state quickly, the flowing speed is slow, the discharging part is easy to coke, and the barrel screw is inconvenient to clean, so that the structure of the barrel screw needs to be further improved.

Disclosure of Invention

The utility model aims to solve the technical problem that a material feeding is smooth and easy to be provided to above-mentioned prior art current situation, difficult putty, the even difficult coking that is heated during the material ejection of compact bonds on the barrel screw rod, the screw rod clearance convenient combination unit of flat twin-screw barrel.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: this composite set of flat twin-screw barrel, including flat twin-screw barrel and wear respectively to put two screws in flat twin-screw barrel corresponds the through-hole be provided with the feed inlet on the one end lateral wall of flat twin-screw barrel the other end of flat twin-screw barrel is provided with the discharge gate, feed inlet and discharge gate are linked together with the through-hole, the screw rod includes the body of rod and sets up the spiral shell arris on the body of rod, and the spiral shell arris of any screw rod stretches into in the spiral shell arris clearance to another screw rod, and the spiral shell arris that stretch into and the processing clearance who corresponds and leave the extrusion material between another screw rod surface, its characterized in that: the flat double-machine barrel comprises a first barrel section and a second barrel section, wherein the first barrel section and the second barrel section are connected together through a flange, a hollow hot sleeve capable of heating the flat double-machine barrel is sleeved on the outer wall of the first barrel section between the flange and a feed inlet, a hot air inlet is arranged at the top of the hollow hot sleeve, a condensed gas-liquid outlet is arranged at the bottom of the hollow hot sleeve, a temperature adjusting pipe capable of adjusting the temperature of the flat double-machine barrel is wound on the outer wall of the second barrel section close to a discharge port, the screw edge comprises a feed section, a melting section and a discharge section, the discharge section comprises a first discharge section and a second discharge section, the screw edge width of the second discharge section is smaller than that of the first discharge section, and the left end of the first discharge section and the second discharge section correspond to the flat double-machine barrel where the temperature adjusting pipe is located.

As a modified machine, the temperature adjusting pipe is spiral, and a spiral adjusting pipe connecting groove is arranged on the outer wall of the flat double-machine barrel corresponding to the temperature adjusting pipe.

The further improvement is that the outer wall of the flat double-cylinder close to the connecting groove of the adjusting pipe is provided with an exhaust hole.

The improved structure is characterized in that an exhaust concave part is arranged on the outer wall of the flat double-machine barrel close to the connecting groove of the adjusting pipe, the exhaust holes are distributed on the bottom surface of the exhaust concave part at intervals, and the exhaust holes are through holes vertically arranged.

The improved structure is characterized in that a positioning concave part is arranged on the outer wall of the bottom of the flat double-cylinder between the end part of the adjusting pipe connecting groove and the exhaust hole, and threaded holes are distributed on the bottom surface of the positioning concave part.

In a further improvement, positioning screw holes are distributed on the top of the flat double machine barrel along the axial direction.

The improved structure has the advantages that the positioning screws between the connecting groove of the adjusting pipe and the feed inlet are distributed at equal intervals, and the space between the positioning screws on the connecting groove of the adjusting pipe is smaller than that between the connecting groove of the adjusting pipe and the feed inlet.

As a machine, the feeding section is a double-spiral edge, the melting section comprises a melting section, a melting section and a melting section, the melting section and the melting section are double-spiral edges, the melting section is a single-spiral edge, and the discharging section is a triple-spiral edge.

In a further improvement, a spiral backflow groove is arranged on the melting second section, and the spiral direction of the backflow groove is opposite to the spiral direction of the melting second section.

The further improvement is that the pitch between the screw edges from the feeding section to the melting section is reduced in sequence, and the pitch between the screw edges of the discharging section is larger than the maximum pitch between the screw edges of the feeding section.

Compared with the prior art, the utility model has the advantages of: the hot jacket can heat the material that gets into in the barrel inner chamber, can let the material get into the molten condition fast, push away to the barrel middle part by the screw rod, it is smooth and easy to make the material feeding, be provided with the temperature regulation pipe on the barrel near the discharge gate, the temperature regulation pipe corresponds with the ejection of compact section of screw rod, the temperature that the temperature regulation pipe can adjust flat duplex barrel and correspond the heating temperature of position, thereby keep in a stable ejection of compact temperature interval when making the material ejection of compact, to the processing of crowded material of essence, stable ejection of compact temperature helps exporting the finished product material that accords with the production requirement, improve ejection of compact effect.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the flat twin-screw machine of FIG. 1 taken along line A-A;

FIG. 3 is a cross-sectional view of the flat twin-screw machine of FIG. 1 taken along line B-B;

FIG. 4 is a cross-sectional view of the flat twin-tub of FIG. 1 taken along line C-C;

FIG. 5 is a front perspective view of the screw of FIG. 1;

fig. 6 is a cross-sectional view taken along line a-a of fig. 5.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 6, the combination device of the flat twin-screw cylinder of the present embodiment includes a flat twin-screw cylinder 1 and two screws respectively inserted into corresponding through holes of the flat twin-screw cylinder 1, a feed port 11 is disposed on a side wall of one end of the flat twin-screw cylinder 1, a discharge port is disposed at the other end of the flat twin-screw cylinder 1, the feed port 11 and the discharge port are communicated with the through holes, the screws include a rod body 2 and screw ridges 21 disposed on the rod body 2, the screw ridge 21 of any screw extends into a gap between the screw ridges 21 of the other screws, a processing gap for extruding materials is left between the extended screw ridge 21 and the outer surface of the corresponding other screw,

the flat double-machine barrel 1 comprises a barrel section A and a barrel section B, the barrel section A and the barrel section B are connected together through a flange, a hollow hot sleeve 3 capable of heating the flat double-machine barrel 1 is sleeved on the outer wall of the barrel section A between the flange and a feed port 11, a hot air inlet 31 is arranged at the top of the hollow hot sleeve 3, a condensed gas-liquid outlet 32 is arranged at the bottom of the hollow hot sleeve 3, a temperature adjusting pipe capable of adjusting the temperature of the flat double-machine barrel 1 is wound on the outer wall of the barrel section B close to a discharge port, a screw 21 comprises a feed section E, a melting section F and a discharge section G, the discharge section G comprises a discharge section G1 and a discharge section G2, the screw width of the discharge section G2 is smaller than that of the discharge section G1, and the left end of the discharge section G1 and the discharge section G2 correspond to the flat double-machine barrel 1 where the temperature adjusting pipe is located. The temperature adjusting pipe is spiral, and a spiral adjusting pipe connecting groove 12 is arranged on the outer wall of the flat double machine barrel 1 corresponding to the temperature adjusting pipe. A vent hole 13 is arranged on the outer wall of the flat double machine barrel 1 close to the connecting groove 12 of the adjusting pipe. An exhaust concave part 14 is arranged on the outer wall of the flat double machine barrel 1 close to the adjusting pipe connecting groove 12, exhaust holes 13 are distributed on the bottom surface of the exhaust concave part 14 at intervals, and the exhaust holes 13 are through holes which are vertically arranged. A positioning concave part 15 is arranged on the outer wall of the bottom of the flat double machine barrel 1 between the end part of the adjusting pipe connecting groove 12 and the exhaust hole 13, and threaded holes 16 are distributed on the bottom surface of the positioning concave part 15. And positioning screw holes 17 are axially distributed on the top of the flat double-machine barrel 1. The positioning screws between the adjusting pipe connecting groove 12 and the feed inlet 11 are distributed at equal intervals, and the spacing between the positioning screws on the adjusting pipe connecting groove 12 is smaller than that between the adjusting pipe connecting groove 12 and the feed inlet 11.

The feeding section E is double-helix, the melting section F comprises a melting section F1, a melting section F2 and a melting section F3, the melting section F1 and the melting section F2 are double-helix edges, the melting section F3 is a single-helix edge, and the discharging section G is a triple-helix edge. The two melting stages F2 are provided with spiral return grooves 18, and the spiral direction of the return grooves 18 is opposite to the spiral direction of the two melting stages F2. The screw pitch between the feeding section E and the melting section F is reduced in sequence, and the screw pitch between the discharging section G is larger than the maximum screw pitch between the feeding section E and the melting section F.

Claims

1. The utility model provides a composite set of flat twin-screw barrel, includes flat twin-screw barrel (1) and wears respectively to put two screws in flat twin-screw barrel (1) corresponds the through-hole be provided with feed inlet (11) on the one end lateral wall of flat twin-screw barrel (1) the other end of flat twin-screw barrel (1) is provided with the discharge gate, feed inlet (11) and discharge gate are linked together with the through-hole, the screw rod includes the body of rod (2) and sets up spiral shell arris (21) on the body of rod (2), and spiral shell arris (21) of any screw rod stretch into in spiral shell arris (21) clearance to another screw rod, and the processing clearance that has the extrusion material between spiral shell arris (21) that stretch into and another screw rod surface that corresponds, its characterized in that: the flat double machine barrel (1) comprises a machine barrel section (A) and a machine barrel section (B), the machine barrel section (A) and the machine barrel section (B) are connected together through a flange, a hollow hot jacket (3) capable of heating the flat double machine barrel (1) is sleeved on the outer wall of the machine barrel section (A) between the flange and a feed inlet (11), a hot air inlet (31) is arranged at the top of the hollow hot jacket (3), a condensed gas-liquid outlet (32) is arranged at the bottom of the hollow hot jacket (3), a temperature adjusting pipe capable of adjusting the temperature of the flat double machine barrel (1) is wound on the outer wall of the machine barrel section (B) close to a discharge port, a screw rib (21) comprises a feed section (E), a melting section (F) and a discharge section (G), the discharge section (G) comprises a discharge section (G1) and a discharge section (G2), the screw rib width of the discharge section (G2) is smaller than that of the discharge section (G1), the left end of the first discharging section (G1) and the second discharging section (G2) correspond to the flat double machine barrel (1) where the temperature adjusting pipe is positioned.

2. The combination of claim 1, wherein: the temperature adjusting pipe is spiral, and a spiral adjusting pipe connecting groove (12) is arranged on the outer wall of the flat double machine barrel (1) corresponding to the temperature adjusting pipe.

3. The combination of claim 2, wherein: an air vent (13) is arranged on the outer wall of the flat double machine barrel (1) close to the connecting groove (12) of the adjusting pipe.

4. The combination of claim 3, wherein: an exhaust concave part (14) is arranged on the outer wall of the flat double machine barrel (1) close to the adjusting pipe connecting groove (12), the exhaust holes (13) are distributed on the bottom surface of the exhaust concave part (14) at intervals, and the exhaust holes (13) are through holes which are vertically arranged.

5. The combination of claim 4, wherein: and a positioning concave part (15) is arranged on the outer wall of the bottom of the flat double machine barrel (1) between the end part of the adjusting pipe connecting groove (12) and the exhaust hole (13), and threaded holes (16) are distributed on the bottom surface of the positioning concave part (15).

6. The combination of claim 5, wherein: and positioning screw holes (17) are axially distributed on the top of the flat double machine barrel (1).

7. The combination of claim 6, wherein: the positioning screws positioned between the adjusting pipe connecting groove (12) and the feeding hole (11) are distributed at equal intervals, and the space between the positioning screws positioned on the adjusting pipe connecting groove (12) is smaller than that between the adjusting pipe connecting groove (12) and the feeding hole (11).

8. The combination of any one of claims 1 to 7, wherein: the feeding section (E) is a double-spiral edge, the melting section (F) comprises a melting section (F1), a melting section (F2) and a melting section (F3), the melting section (F1) and the melting section (F2) are double-spiral edges, the melting section (F3) is a single-spiral edge, and the discharging section (G) is a three-spiral edge.

9. The combination of claim 8, wherein: a spiral backflow groove (18) is formed in the melting section (F2), and the spiral direction of the backflow groove (18) is opposite to the spiral direction of the melting section (F2).

10. The combination of claim 9, wherein: the pitch of the screw edges from the feeding section (E) to the melting section (F) is reduced in sequence, and the pitch of the screw edges of the discharging section (G) is larger than that of the maximum pitch of the screw edges of the feeding section (E).