CN215151702U - Combination device of barrel screw - Google Patents

Abstract

The utility model provides a composite set of barrel screw rod, includes barrel and two conical screw rods, is provided with awl double-pass hole at barrel middle part axial, and the screw rod includes the body of rod and spiral shell arris, and the spiral shell arris divide into feed zone, melting section and ejection of compact section, and the body of rod and spiral shell arris are by length-diameter ratio be 1: 26, the idiosome is the cone, the both ends of cone are that the cross-section is circular plane, tail end plane circle diameter is 2 times of top end plane circle diameter, be provided with the cone in the planar middle part in top, be provided with the transmission projection in the planar middle part of tail end, it has the ring channel to distribute axially at an interval on the surface of cone, the transmission projection includes smooth cylinder section and the transmission section that is provided with the spline, the circumference distributes on the outer wall of cylinder section has positioning groove. The utility model has the advantages that: the processing operation of the screw is convenient, and the forming precision of the screw edge is high. The material discharging effect is good.

Description

Combination device of barrel screw

Technical Field

The utility model relates to an injection molding machine preparation technical field especially indicates a integrated configuration of a section of thick bamboo screw rod.

Background

The prior Chinese utility model patent with the application number of CN201420226723.9 entitled tapered twin-screw of a machine barrel discloses a tapered twin-screw of a machine barrel, which comprises a screw rod body; the two ends of the screw rod body are respectively a big end and a small end; the screw rod body consists of 5 screw rod sections with different screw pitches; the screw section is arranged between the large end and the small end; the size of the big end is 66.88 mm; the size of the small end is 29.7-29.9 mm. The conical double screw of the machine barrel of the utility model increases the size of the big end and slightly reduces the size of the small end, thereby improving the compression ratio of the screw; the existing machine can be used without great change, thereby improving the plasticizing performance and accelerating the production efficiency. However, the conical twin screw is not easy to position during manufacturing and inconvenient to process, so the structure of the conical twin screw needs to be further improved.

Disclosure of Invention

The utility model aims to solve the technical problem that to above-mentioned prior art current situation and provide a processing location is convenient, and the shaping precision of spiral shell arris is high, the composite set of barrel screw rod that the material treatment effect is good.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: this composite set of barrel screw rod, including barrel and two toper screw rods, be provided with the awl double-pass hole that can pass the screw rod in barrel middle part axial, the screw rod includes the body of rod and sets up the flight on body of rod surface, the flight divide into feed section, melting section and ejection of compact section, its characterized in that: the rod body and the screw arrises are formed by a length-diameter ratio of 1: 26, the idiosome is the cone, the both ends of cone are that the cross-section is circular plane, and tail end plane circle diameter is 2 times of top end plane circle diameter, is provided with the cone in the planar middle part in top, is provided with the transmission projection at the planar middle part of tail end, and the axial interval distributes on the surface of cone has the ring channel that is used for segmentation processing, the transmission projection includes glossy cylinder section and the transmission section that is provided with the spline the circumference distributes and has positioning groove on the outer wall of cylinder section.

As an improvement, the machine barrel consists of a machine barrel section, a machine barrel section and a machine barrel section, wherein the exhaust port of the machine barrel is positioned at the joint of the machine barrel section and the machine barrel section, the inner wall of the machine barrel section is provided with an alloy layer, and corresponding alloy sleeves are arranged in inner holes of the machine barrel section and the machine barrel section in a penetrating manner.

The alloy layer is located between a section of discharge port of the machine barrel and a feed inlet of the machine barrel, an inner wall of the feed inlet of the machine barrel, which is close to the alloy layer, is an arc-shaped inclined plane, the angle of the axial section of the arc-shaped inclined plane is 30 degrees, the length of the alloy layer is 280-320 mm, and the total length of the machine barrel is 2600-3000 mm.

The further improvement is that the outer surface of the screw corresponding to the alloy sleeve and the alloy layer is an alloy section, and the length of the alloy section is 2100-2500 mm.

As an improvement, the feeding section is a double-spiral edge, the feeding section comprises a feeding section, a feeding section and a feeding section, the feeding section and the feeding section are sequentially connected end to end, and the spiral edge intervals of the feeding section, the feeding section and the feeding section are sequentially reduced.

The melting section comprises a melting section, a melting section and a melting section, wherein the melting section, the melting section and the melting section are single spiral edges, the melting section is a triple spiral edge, the melting section and the melting section are connected together end to end, and the melting section, the melting section and the melting section are sequentially arranged in a separated mode.

Further improved, the tail part of the first melting section and the second melting section are provided with reflux grooves.

The discharging section comprises a first discharging section, a second discharging section and a third discharging section, the first discharging section, the second discharging section and the third discharging section are sequentially connected end to end, the pitch of the first discharging section is smaller than that of the second discharging section, and the pitch of the second discharging section is smaller than that of the third discharging section.

The width of the screw ridge of the first discharging section is kept unchanged, the width of the screw ridge of the third discharging section is larger than that of the screw ridge of the first discharging section, the width of the screw ridge of the second discharging section is gradually increased, the minimum width position of the screw ridge of the second discharging section is the same as that of the screw ridge of the first discharging section, and the maximum width position of the screw ridge of the second discharging section is the same as that of the screw ridge of the third discharging section.

The screw pitch of the first discharging section is kept unchanged, the screw pitch of the third discharging section is kept unchanged, the screw pitch of the second discharging section is gradually increased, the maximum screw pitch of the second discharging section is the same as that of the third discharging section, and the minimum screw pitch of the second discharging section is the same as that of the first discharging section.

Compared with the prior art, the utility model has the advantages of: the transmission convex column is divided into a smooth column body section and a transmission section provided with a spline, and the column body section is provided with the positioning groove, so that positioning can be carried out through the positioning groove when a blank body is processed, the processing operation of the screw rod is convenient, and the forming precision of the screw edge is high; alloy structures are preferably arranged on the inner wall of the machine barrel and the outer wall of the screw, so that the service life of the machine barrel screw is prolonged; the screw ridge interval and the screw ridge width which are gradually changed can be preferably arranged at the discharging two-section, so that the gradual change of the pressure applied to the material is realized, and the material discharging effect is better.

Drawings

FIG. 1 is a cross-sectional view of a blank taken along a plane of a central axis according to an embodiment of the present invention;

FIG. 2 is an enlarged view of the drive stud of FIG. 1;

FIG. 3 is a front perspective view of the screw made in FIG. 1;

FIG. 4 is a front perspective view of the barrel associated with the screw of FIG. 3;

FIG. 5 is a side elevational view of FIG. 4;

fig. 6 is a side projection view of fig. 4 at another angle.

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 combined device of a barrel screw of this embodiment includes a barrel and two conical screws, a conical double-pass hole 31 capable of passing through the screws is axially disposed in the middle of the barrel, the screws include a rod body 1 and screw ridges disposed on the surface of the rod body 1, the screw ridges are divided into a feeding section a, a melting section B and a discharging section C, and the rod body 1 and the screw ridges are formed by a length-diameter ratio of 1: 26, the idiosome 2 processes the overall structure that forms, the idiosome 2 is the cone, the both ends of cone are that the cross-section is circular plane, tail end plane circle diameter is 2 times of top end plane circle diameter, be provided with cone 21 in the planar middle part of top end, be provided with the transmission projection at the planar middle part of tail end, it has ring channel 22 that is used for segmentation processing to distribute axially interval on the surface of cone, the transmission projection includes glossy cylinder section 23 and the transmission section 24 that is provided with the spline, the circumference distributes and has positioning groove 25 on the outer wall of cylinder section 23.

The machine barrel consists of a machine barrel section E, a machine barrel section F and a machine barrel section G, an exhaust port of the machine barrel is positioned at the joint of the machine barrel section F and the machine barrel section G, an alloy layer is arranged on the inner wall of the machine barrel section E, and corresponding alloy sleeves 32 are arranged in inner holes of the machine barrel section F and the machine barrel section G in a penetrating mode. The alloy layer is located between a section E of the machine barrel and the machine barrel feeding hole 33, the inner wall of the machine barrel feeding hole 33 close to the alloy layer is an arc-shaped inclined surface, the angle a of the axial section of the arc-shaped inclined surface is 30 degrees, the length L1 of the alloy layer is 280-320 mm, and the total length L2 of the machine barrel is 2600-3000 mm. The outer surface of the screw corresponding to the alloy sleeve 32 and the alloy layer is an alloy section D, and the length of the alloy section D is 2100-2500 mm.

The feeding section A is double spiral ribs, the feeding section A comprises a feeding section A1, a feeding section A2 and a feeding section A4, the feeding section A1, the feeding section A2 and the feeding section A3 are sequentially connected end to end, and the spiral rib intervals of the feeding section A1, the feeding section A2 and the feeding section A3 are sequentially reduced. The pitch L3 of the first feeding section is 33.5mm, the pitch L4 of the second feeding section is 29mm, the pitch L5 of the third feeding section is 26mm, the width K1 of the first feeding section is 12.6mm, the width K2 of the second feeding section is 10.4mm, and the width K3 of the third feeding section is 8.9 mm.

The melting section B comprises a melting section B1, a melting section B2, a melting section B3 and a melting section B4, the melting section B1, the melting section B2 and the melting section B3 are single spiral edges, the melting section B4 is a triple spiral edge, the melting section B1 and the melting section B2 are connected together end to end, and the melting section B2, the melting section B3 and the melting section B4 are sequentially arranged in a separated mode. The tail of the first melting section B1 and the second melting section B2 are provided with reflux grooves. The width K4 of the flight of the three melted sections was 13.5mm, the pitch L6 of the flight of the three melted sections was 38mm, the width K5 of the flight of the four melted sections was 15.5mm, and the pitch L7 of the flight of the four melted sections was 57 mm.

The discharging section C is a three-spiral-edge structure, the discharging section C comprises a discharging section C1, a discharging section C2 and a discharging section C3, the discharging section C1, the discharging section C2 and the discharging section C3 are sequentially connected end to end, the spiral-edge space of the discharging section C1 is smaller than that of the discharging section C2, and the spiral-edge space of the discharging section C2 is smaller than that of the discharging section C3. The width of the screw edge of the first discharging section C1 is kept unchanged, the width of the screw edge of the third discharging section C3 is kept unchanged, the width of the screw edge of the third discharging section C3 is larger than that of the screw edge of the first discharging section C1, the width of the screw edge of the second discharging section C2 is gradually increased, the minimum width position of the screw edge of the second discharging section C2 is the same as that of the screw edge of the first discharging section C1, and the maximum width position of the screw edge of the second discharging section C2 is the same as that of the screw edge of the third discharging section C3. The pitch of the spiral ribs of the discharging section C1 is kept unchanged, the pitch of the spiral ribs of the discharging section C3 is kept unchanged, the pitch of the spiral ribs of the discharging section C2 is gradually increased, the maximum pitch of the spiral ribs of the discharging section C2 is the same as the pitch of the spiral ribs of the discharging section C3, and the minimum pitch of the spiral ribs of the discharging section C2 is the same as the pitch of the spiral ribs of the discharging section C1. The screw ridge width K6 of the discharging section is 14.5mm, the screw ridge width K7 of the discharging section is 15.5mm, the screw ridge interval L8 of the discharging section is 47.33mm, and the screw ridge interval L9 of the discharging section is 52.67 mm.

Claims (10)

1. The utility model provides a composite set of barrel screw rod, includes barrel and two conical screw rods, is provided with awl double-through-hole (31) that can pass the screw rod in barrel middle part axial, the screw rod includes the body of rod (1) and sets up the spiral shell arris on body of rod (1) surface, the spiral shell arris divide into feed section (A), melting section (B) and ejection of compact section (C), its characterized in that: the rod body (1) and the screw edges are formed by a structure that the length-diameter ratio is 1: 26 the idiosome (2) integral structure that processing formed, the idiosome (2) are the conical body, the both ends of conical body are that the cross-section is circular plane, and tail end plane circle diameter is 2 times of top end plane circle diameter, is provided with cone (21) in the planar middle part of top end, is provided with the transmission projection at the planar middle part of tail end, and the axial interval distributes on the surface of conical body has ring channel (22) that are used for segmentation processing, the transmission projection includes glossy column body section (23) and transmission section (24) that are provided with the spline the circumference distributes and has positioning groove (25) on the outer wall of column body section (23).

2. The combination of claim 1, wherein: the cylinder consists of a cylinder section (E), a cylinder section (F) and a cylinder section (G), wherein a vent of the cylinder is positioned at the joint of the cylinder section (F) and the cylinder section (G), an alloy layer is arranged on the inner wall of the cylinder section (E), and corresponding alloy sleeves (32) are arranged in inner holes of the cylinder section (F) and the cylinder section (G) in a penetrating manner.

3. The combination of claim 2, wherein: the alloy layer is located between a discharge port of one section (E) of the machine barrel and a feed inlet (33) of the machine barrel, an inner wall, close to the alloy layer, of the feed inlet (33) of the machine barrel is an arc-shaped inclined surface, an angle (a) of an axial section of the arc-shaped inclined surface is 30 degrees, the length (L1) of the alloy layer is 280-320 mm, and the total length (L2) of the machine barrel is 2600-3000 mm.

4. The combination of claim 3, wherein: the outer surface of the screw corresponding to the alloy sleeve (32) and the alloy layer is an alloy section (D), and the length of the alloy section (D) is 2100-2500 mm.

5. The combination of any one of claims 1 to 4, wherein: the feeding section (A) is double-spiral, the feeding section (A) comprises a feeding section (A1), a feeding section (A2) and a feeding section (A3), the feeding section (A1), the feeding section (A2) and the feeding section (A3) are sequentially connected end to end, and spiral intervals of the feeding section (A1), the feeding section (A2) and the feeding section (A3) are sequentially reduced.

6. The combination of claim 5, wherein: the melting section (B) comprises a melting section (B1), a melting section (B2), a melting section (B3) and a melting section (B4), the melting section (B1), the melting section (B2) and the melting section (B3) are single spiral edges, the melting section (B4) is three spiral edges, the melting section (B1) and the melting section (B2) are connected together end to end, and the melting section (B2), the melting section (B3) and the melting section (B4) are sequentially arranged in a separated mode.

7. The combination of claim 6, wherein: a return groove is provided at the tail of the first melting section (B1) and the second melting section (B2).

8. The combination of claim 7, wherein: the discharging section (C) is a three-screw edge, the discharging section (C) comprises a discharging section (C1), a discharging section (C2) and a discharging section (C3), the discharging section (C1), the discharging section (C2) and the discharging section (C3) are sequentially connected end to end, the screw edge space of the discharging section (C1) is smaller than that of the discharging section (C2), and the screw edge space of the discharging section (C2) is smaller than that of the discharging section (C3).

9. The combination of claim 8, wherein: the width of the screw ridge of the first discharging section (C1) is kept unchanged, the width of the screw ridge of the third discharging section (C3) is kept unchanged, the width of the screw ridge of the third discharging section (C3) is larger than that of the screw ridge of the first discharging section (C1), the width of the screw ridge of the second discharging section (C2) is gradually increased, the minimum width of the screw ridge of the second discharging section (C2) is the same as that of the screw ridge of the first discharging section (C1), and the maximum width of the screw ridge of the second discharging section (C2) is the same as that of the screw ridge of the third discharging section (C3).

10. The combination of claim 9, wherein: the pitch of the spiral ribs of the first discharging section (C1) is kept unchanged, the pitch of the spiral ribs of the third discharging section (C3) is kept unchanged, the pitch of the spiral ribs of the second discharging section (C2) is gradually increased, the maximum pitch of the spiral ribs of the second discharging section (C2) is the same as the pitch of the spiral ribs of the third discharging section (C3), and the minimum pitch of the spiral ribs of the second discharging section (C2) is the same as the pitch of the spiral ribs of the first discharging section (C1).

Images