CN211683329U - Injection molding structure for injection molding machine - Google Patents

Abstract

The utility model provides an injection structure for injection molding machine, includes barrel and screw rod, and the screw rod is worn to put in the inner chamber of barrel, is provided with spiral shell arris section on the screw rod body surface that lies in the barrel inner chamber, spiral shell arris section includes feeding section, melting section and ejection of compact section, its characterized in that: the length of the feeding section is 2650-2850 mm, the length of the melting section is 1100-1300 mm, the length of the discharging section is 1400-1600 mm, the ratio of the total length of the screw ridge section to the outer diameter of the screw is 32-38, the value range of the outer diameter of the screw is 130-140 mm, the bottom diameter of the screw is kept unchanged along the axial direction of the screw, the value range of the bottom diameter of the screw is 80-85 mm, and the distance between the inner wall of the machine barrel and the outer diameter of the screw is 0.2-0.4 mm. The utility model has the advantages that: simple structure, barrel and screw rod cooperation are effectual, can export the even stone that closely satisfies the further processing requirement of material and mould floor raw materials.

Description

Injection molding structure for injection molding machine

Technical Field

The utility model relates to an injection molding machine preparation technical field especially indicates an injection structure for injection molding machine.

Background

The traditional Chinese patent application with the application number of CN201210190475.2 named as plasticizing structure in a screw propulsion type injection molding device discloses a plasticizing structure in a screw propulsion type injection molding device, wherein a check ring and a check pad are added in the plasticizing structure, so that the pressure of the injected raw materials on a screw and the pressure of the raw materials at the head of the screw on the following raw materials can be reduced, and the overflow of the raw materials from a raw material port is reduced. However, the plasticizing structure has an unsatisfactory treatment effect when used for treating the raw material of the stone plastic floor, and the material treated at the outlet of the plasticizing structure is not uniform and compact and is difficult to meet the requirement of further processing, so the structure of the plasticizing structure 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 one kind and accelerate the material to get into the melting section from the feed section to can prolong the life of feed section spiral shell arris be used for injection molding machine's injection structure.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: this an injection structure for injection molding machine, including barrel and screw rod, the screw rod is worn to put in the inner chamber of barrel, is provided with spiral shell arris section on the screw rod body surface that lies in the barrel inner chamber, spiral shell arris section includes feeding section, melting section and ejection of compact section, its characterized in that: the length of feeding section is 2650 ~ 2850mm, the length of melting section is 1100 ~ 1300mm, the length of ejection of compact section is 1400 ~ 1600mm, and the ratio of spiral shell arris section total length and screw rod external diameter is 32 ~ 38, just the value range of screw rod external diameter is 130 ~ 140mm, and the screw rod end footpath keeps unchangeable along the screw rod axial just the value range of screw rod end footpath be 80 ~ 85mm, the distance between barrel inner wall and the screw rod external diameter is 0.2 ~ 0.4 mm.

As an improvement, the inner cavity of the machine barrel can be preferably a flat double-through hole capable of accommodating two screws arranged in parallel, the distance between the centers of the radial sections of the flat double-through holes is 100-120 mm, the rotating directions of the two screws in the flat double-through hole are opposite, and the distance between the outer diameter of one screw and the bottom diameter of the other screw is 1.4-1.6 mm.

The improved structure is characterized in that the diameter of the right-handed screw spline is preferably smaller than that of the left-handed screw spline, the numerical range of the right-handed screw spline is 71-77 mm, and the numerical range of the left-handed screw spline is 74-80 mm.

The length of the machine barrel can be preferably 4600-4900 mm, the outer diameter of the machine barrel is 300-320 mm, the diameter of a machine barrel flange fixed with a support of the injection molding machine is 450-490 mm, the diameter of a circle where a threaded through hole is formed in the machine barrel flange is 415-425 mm, and the aperture of the threaded through hole is 22-28 mm.

As an improvement, the number of the threaded through holes may be preferably 18, wherein 9 threaded through holes are located in an upper semicircle of the cylinder flange, an included angle between adjacent threaded through holes is 15 °, the other 9 threaded through holes are located in a lower semicircle of the cylinder flange, the other 9 threaded through holes and the 9 threaded through holes are symmetrically arranged relative to a horizontal plane where a cylinder central axis is located, a cylinder end face corresponding to the cylinder flange is provided with an end face convex portion, the end face convex portion is provided with positioning holes with a diameter of 25mm and a depth of 30mm, the cylinder end face around the end face convex portion is distributed with connecting holes, and the diameter of a circle where the connecting holes are located is 295-315 mm.

The improved structure comprises a feeding section, a feeding section and a feeding section, wherein the feeding section comprises a first feeding section, a second feeding section and a third feeding section, the first feeding section is provided with three spiral ridges, the pitch of the spiral ridges of the first feeding section is 200-220 mm, the width of the spiral ridges of the first feeding section is 21-27 mm, the normal included angle of the first feeding section is 4-6 degrees, the second feeding section and the third feeding section are double spiral ridges, the pitch of the spiral ridges of the second feeding section is 142-162 mm, the width of the spiral ridges of the second feeding section is 24-30 mm, the normal included angle of the second feeding section is 9-11 degrees, the pitch of the spiral ridges of the third feeding section is 116-136 mm, the width of the spiral ridges of the third feeding section is 19-25; the pitch of the side walls of the screw edges of the two corresponding screw rods at one section of the feeding section is 5.2-5.8 mm, the pitch of the side walls of the screw edges of the two corresponding screw rods at the second section of the feeding section is 4.2-4.8 mm, and the pitch of the side walls of the screw edges of the two corresponding screw rods at the third section of the feeding section is 3.2-3.8 mm.

The improved structure comprises a melting section, a melting section and a melting section, wherein the melting section comprises a first melting section, a second melting section and a third melting section, the first melting section and the second melting section are double-spiral edges, the pitch of the spiral edges of the first melting section is 90-110 mm, the width of the spiral edges of the first melting section is 14-20 mm, the normal included angle of the first melting section is 9-11 degrees, the pitch of the spiral edges of the first melting section is 75-95 mm, the width of the spiral edges of the second melting section is 11-17 mm, the normal included angle of the second melting section is 9-11 degrees, the third melting section is a single spiral edge, the pitch of the spiral edges of the third melting section is 42-62 mm, the width of the spiral edges of the third melting section is 15-21 mm, the normal included angle of the third melting section is 9-11 degrees, backflow grooves are respectively arranged on the spiral edges of the rear melting section of the first melting.

Further improve, 300mm can be preferred to the length of one section of backwash tank of melting, 350mm can be preferred to the length of two sections of backwash tanks of melting, and the bottom of one section of backwash tank of melting and two sections of backwash tanks of melting is 1.5mm to the distance that corresponds the body of rod surface, and one section of backwash tank of melting and two sections of backwash tanks of melting have 5 respectively and evenly distributed on the spiral shell arris section that corresponds.

The pitch of the side walls of the screw edges of the two corresponding screws in the first melting section can be preferably 2.9-3.5 mm, the pitch of the side walls of the screw edges of the two corresponding screws in the second melting section is 2.9-3.5 mm, and the pitch of the side walls of the screw edges of the two corresponding screws in the third melting section is 3.2-3.8 mm.

As an improvement, the discharging section comprises a first discharging section and a second discharging section, the first discharging section and the second discharging section are both three spiral ridges, the pitch of the spiral ridges of the first discharging section is 270-290 mm, the width of the spiral ridges of the first discharging section is 28-34 mm, the normal included angle of the root of the first discharging section is 9-11 degrees, the normal included angle of the upper part of the first discharging section is 15-17 degrees, the pitch of the spiral ridges of the second discharging section is 150-170 mm, the width of the spiral ridges of the second discharging section is 15-21 mm, the normal included angle of the root of the second discharging section is 9-11 degrees, and the normal included angle of the upper part of the second; the distance between the side walls of the screw edges of the two corresponding screw rods in the first discharging section is 4.7-5.3 mm, and the distance between the side walls of the screw edges of the two corresponding screw rods in the second discharging section is 3.2-3.8 mm.

Compared with the prior art, the utility model has the advantages of: the feeding section is provided with three spiral ridges, the more the number of the spiral ridges distributed on the circumference of the rod body with the same length is, the longer the span of one circle of spiral ridges is obviously, the smaller the included angle between the overlooking projection of the spiral ridges and the axis of the rod body is, therefore, the three spiral ridges are relative to the single spiral ridges or the double spiral ridges, the material flowing channel between the adjacent spiral ridges is closer to the axial direction of the rod body, the speed of the material flowing through the three spiral ridges is higher than that of the double spiral ridges, so that the material can enter the feeding section more quickly, and similarly, the speed of the material flowing through the double spiral ridges is higher than that of the single spiral ridges, and compared with the prior art, the material can enter the melting section from the feeding section more quickly; the screw width of the feeding second section is wider than the screw width of the feeding first section and the feeding second section, the joint of the head of the feeding second section and the tail of the feeding first section is the occurrence part of the change of the number of the screw edges, when the material flows to the position, the speed can change suddenly, therefore, the pressure can change suddenly, thereby causing the pressure change suddenly at the root of the screw edges of the feeding second section, the wider screw width can strengthen the connection strength of the feeding second section screw edges and the rod body, thereby better resisting the influence of the pressure change of the material on the screw edges, and prolonging the service life of the screw edges.

Drawings

Fig. 1 is a front perspective view of an embodiment of the present invention;

FIG. 2 is a front perspective view of the screw of FIG. 1;

FIG. 3 is a side elevational view of the spline structure of FIG. 2;

FIG. 4 is a cross-sectional view taken along line G-G of FIG. 2;

FIG. 5 is a sectional view in normal section of the feed section of FIG. 2;

FIG. 6 is a normal cross-sectional view of the feed material of FIG. 2;

FIG. 7 is a sectional view in normal section of the three feed sections of FIG. 2;

FIG. 8 is a sectional view in normal section of the fused segment of FIG. 2;

FIG. 9 is a cross-sectional normal view of the molten two segment of FIG. 2;

FIG. 10 is a cross-sectional normal view of the three melted segments of FIG. 2;

FIG. 11 is a cross-sectional view in normal section of the outfeed section of FIG. 2;

FIG. 12 is a cross-sectional normal view of the outfeed section of FIG. 2;

FIG. 13 is a cross-sectional view of the two screws of FIG. 1 taken along a horizontal plane showing the pitch of the flight sidewalls;

FIG. 14 is a front elevational view of the barrel of FIG. 1;

fig. 15 is a side elevational view of fig. 14.

Detailed Description

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

As shown in fig. 1 to 15, the injection molding structure for an injection molding machine of the embodiment includes a machine barrel 1 and a screw rod 2, the screw rod 2 is inserted into an inner cavity of the machine barrel 1, a screw rod body surface located in the inner cavity of the machine barrel is provided with a screw ridge section, the screw ridge section includes a feeding section a, a melting section B and a discharging section C, the length of the feeding section a is 2650-2850 mm, the length of the melting section B is 1100-1300 mm, the length of the discharging section C is 1400-1600 mm, the ratio of the total length of the screw ridge section to the outer diameter D1 of the screw rod is 32-38, the value range of the outer diameter D1 of the screw rod is 130-140 mm, the bottom diameter D2 of the screw rod remains unchanged along the axial direction of the screw rod, the value range of the bottom diameter D2 of the screw rod is 80-85 mm, and the distance between the inner wall of the machine barrel and the outer diameter of the. The inner cavity of the machine barrel 1 is a flat double-through hole capable of accommodating two screws 2 arranged in parallel, the distance S between the centers of the radial sections of the flat double-through hole is 100-120 mm, the rotating directions of the two screws 2 in the flat double-through hole are opposite, and the distance S1 between the outer diameter of one screw and the bottom diameter of the other screw is 1.4-1.6 mm. The spline diameter D3 of dextrorotation screw rod is less than the spline diameter of levogyration screw rod, and the value range of the spline diameter D3 of dextrorotation screw rod is 71 ~ 77mm, and the value range of the spline diameter of levogyration screw rod is 74 ~ 80 mm. The length of the machine barrel 1 is 4600-4900 mm, the outer diameter D5 of the machine barrel is 300-320 mm, the diameter D6 of a machine barrel flange fixed with an injection molding machine bracket is 450-490 mm, the diameter D7 of a circle where a threaded through hole 111 is located on the machine barrel flange 11 is 415-425 mm, and the aperture D8 of the threaded through hole is 22-28 mm. The number of the thread through holes 111 is 18, wherein 9 thread through holes are located in the upper semicircle of the machine barrel flange 11, the included angle theta between every two adjacent thread through holes is 15 degrees, the other 9 thread through holes are located in the lower semicircle of the machine barrel flange 11, the other 9 thread through holes and the 9 thread through holes are symmetrically arranged relative to the horizontal plane where the central axis of the machine barrel is located, the end surface convex part 12 is arranged on the end surface of the machine barrel corresponding to the machine barrel flange 11, the end surface convex part 12 is provided with a positioning hole 121 with the diameter of 25mm and the depth of 30mm, the end surface of the machine barrel around the end surface convex part 12 is provided with connecting holes 13, and the diameter D9 of the circle where the connecting holes are located is.

The feeding section A comprises a feeding section A1, a feeding section A2 and a feeding section A3, wherein the feeding section A1 is a three-screw rib, the screw rib spacing L1 of the feeding section A is 200-220 mm, the screw rib width T1 of the feeding section A is 21-27 mm, the normal included angle a1 of the feeding section A is 4-6 degrees, the feeding section A2 and the feeding section A3 are double-screw ribs, the screw rib spacing L2 of the feeding section is 142-162 mm, the screw rib width T2 of the feeding section is 24-30 mm, the normal included angle a2 of the feeding section A is 9-11 degrees, the screw rib spacing L3 of the feeding section is 116-136 mm, the screw rib width T3 of the feeding section is 19-25 mm, and the normal included angle A3 of the feeding section A is 9-11 degrees; the screw rib side wall space S2 of two corresponding screws in the first feeding section is 5.2-5.8 mm, the screw rib side wall space of two corresponding screws in the second feeding section is 4.2-4.8 mm, and the screw rib side wall space of two corresponding screws in the third feeding section is 3.2-3.8 mm.

The melting section B comprises a melting section B1, a melting section B2 and a melting section B3, the melting section B1 and the melting section B2 are double ribs, the pitch L4 of the melting section is 90-110 mm, the width T4 of the melting section is 14-20 mm, the normal included angle a4 of the melting section is 9-11 degrees, the pitch L5 of the melting section is 75-95 mm, the width T5 of the melting section is 11-17 mm, the normal included angle a5 of the melting section is 9-11 degrees, the melting section B3 is a single rib, the pitch L6 of the melting section is 42-62 mm, the width T6 of the melting section is 15-21 mm, the normal included angle a6 of the melting section is 9-11 degrees, backflow grooves are formed in the axial direction of the screw rod on the rear section rib of the melting section B1 and the rear section B2 of the melting section, and backflow grooves are 22-22 mm in width S3 mm. The length S4 of one section of molten reflux groove is 300mm, the length S5 of the two sections of molten reflux grooves is 350mm, the distance S6 from the bottom of one section of molten reflux groove and the bottom of the two sections of molten reflux grooves to the outer surface of the corresponding rod body is 1.5mm, and the number of the two sections of molten reflux grooves are 5 respectively and are uniformly distributed on the corresponding spiral rib sections. The pitch of the side walls of the screw edges of the two corresponding screws in the first melting section is 2.9-3.5 mm, the pitch of the side walls of the screw edges of the two corresponding screws in the second melting section is 2.9-3.5 mm, and the pitch of the side walls of the screw edges of the two corresponding screws in the third melting section is 3.2-3.8 mm.

The discharging section C comprises a discharging section C1 and a discharging section C2, the discharging section C1 and the discharging section C2 are all three spiral edges, the pitch L7 of the discharging section C is 270-290 mm, the width T7 of the spiral edge of the discharging section C is 28-34 mm, the normal included angle a71 of the root of the discharging section C is 9-11 degrees, the normal included angle a72 of the upper part of the discharging section C is 15-17 degrees, the pitch L8 of the spiral edge of the discharging section C is 150-170 mm, the width T8 of the spiral edge of the discharging section C is 15-21 mm, the normal included angle a81 of the root of the discharging section C is 9-11 degrees, and the normal included angle a82 of the upper part of the discharging section C is 15-17 degrees; the distance between the side walls of the screw edges of the two corresponding screw rods in the first discharging section is 4.7-5.3 mm, and the distance between the side walls of the screw edges of the two corresponding screw rods in the second discharging section is 3.2-3.8 mm.

The working principle is as follows: the material enters the inner cavity of the machine barrel from a feeding hole in the side wall of one end of the machine barrel, the left-handed screw and the right-handed screw extrude the material, the material moves forwards along the screws and is gradually melted, finally, the material leaves the machine barrel from the discharging section of the screws, and the material leaving from the outlet of the machine barrel is injected into a forming die of the stone plastic floor for next processing.

Claims (10)

1. The utility model provides an injection structure for injection molding machine, includes barrel (1) and screw rod (2), screw rod (2) are worn to be put in the inner chamber of barrel (1), are provided with spiral shell arris section on the screw rod body surface that lies in the barrel inner chamber, spiral shell arris section includes feed section (A), melting section (B) and ejection of compact section (C), its characterized in that: the length of feeding section (A) is 2650 ~ 2850mm, the length of melting section (B) is 1100 ~ 1300mm, the length of ejection of compact section (C) is 1400 ~ 1600mm, and the ratio of spiral shell arris section total length and screw rod external diameter (D1) is 32 ~ 38, just the value range of screw rod external diameter (D1) is 130 ~ 140mm, and the screw rod end footpath (D2) keep unchangeable along the screw rod axial just the value range of screw rod end footpath (D2) be 80 ~ 85mm, the distance between barrel inner wall and the screw rod external diameter is 0.2 ~ 0.4 mm.

2. An injection molding structure as claimed in claim 1, wherein: the inner chamber of barrel (1) is the flat double-through-hole that can hold two parallel arrangement 'S screw rod (2), and flat double-through-hole aperture radial cross-section' S centre of a circle is apart from (S) for 100 ~ 120mm, and two screw rod (2) that lie in flat double-through-hole revolve to opposite, and the distance (S1) between the screw rod external diameter of any screw rod and the screw rod base diameter of another screw rod is 1.4 ~ 1.6 mm.

3. An injection molding structure as claimed in claim 2, wherein: the spline diameter (D3) of the right-handed screw is smaller than that of the left-handed screw, the value range of the spline diameter (D3) of the right-handed screw is 71-77 mm, and the value range of the spline diameter of the left-handed screw is 74-80 mm.

4. An injection molding structure as claimed in claim 2, wherein: the length of the machine barrel (1) is 4600-4900 mm, the outer diameter (D5) of the machine barrel is 300-320 mm, the diameter (D6) of a machine barrel flange fixed with an injection molding machine support is 450-490 mm, the diameter (D7) of a circle where a threaded through hole (111) is formed in the machine barrel flange (11) is 415-425 mm, and the aperture (D8) of the threaded through hole is 22-28 mm.

5. An injection molding structure as claimed in claim 4, wherein: the quantity of screw through hole (111) is 18, and wherein 9 screw through holes are located the last semicircle of barrel flange (11), and the contained angle (theta) of adjacent screw through hole is 15, and 9 screw through holes are located the lower semicircle of barrel flange (11) in addition, just 9 other screw through holes with 9 screw through holes relative barrel center pin place horizontal plane symmetry set up, be provided with terminal surface convex part (12) on the barrel terminal surface that corresponds with barrel flange (11), be provided with diameter on terminal surface convex part (12) and be 30mm deep locating hole (121) for the diameter 25mm, distribute on terminal surface convex part (12) barrel terminal surface all around connecting hole (13), diameter (D9) of the circle of connecting hole place is 295 ~ 315 mm.

6. An injection molding structure according to any one of claims 2 to 5, wherein: the feeding section (A) comprises a feeding section (A1), a feeding section (A2) and a feeding section (A3), wherein the feeding section (A1) is a three-screw rib, the screw rib spacing (L1) of the feeding section is 200-220 mm, the screw rib width (T1) of the feeding section is 21-27 mm, the normal included angle (a1) of the feeding section is 4-6 degrees, the feeding section (A2) and the feeding section (A3) are double-screw ribs, the screw rib spacing (L2) of the feeding section is 142-162 mm, the screw rib width (T2) of the feeding section is 24-30 mm, the normal included angle (a2) of the feeding section is 9-11 degrees, the screw rib spacing (L3) of the feeding section is 116-136 mm, the screw rib width (T3) of the feeding section is 19-25 mm, and the normal included angle (A3) of the feeding section is 9-11 degrees; the pitch (S2) between the screw edges of the two screws corresponding to the first feeding section is 5.2-5.8 mm, the pitch between the screw edges of the two screws corresponding to the second feeding section is 4.2-4.8 mm, and the pitch between the screw edges of the two screws corresponding to the third feeding section is 3.2-3.8 mm.

7. An injection molding structure according to any one of claims 2 to 5, wherein: the melting section (B) comprises a melting section (B1), a melting section (B2) and a melting section (B3), the melting section (B1) and the melting section (B2) are double ribs, the pitch (L4) of the melting section is 90-110 mm, the width (T4) of the melting section is 14-20 mm, the normal included angle (a4) of the melting section is 9-11 degrees, the pitch (L5) of the melting section is 75-95 mm, the width (T5) of the melting section is 11-17 mm, the normal included angle (a5) of the melting section is 9-11 degrees, the melting section (B3) is a single rib, the pitch (L6) of the melting section is 42-62 mm, the width (T6) of the melting section is 15-21 mm, the normal included angle (a6) of the melting section is 9-11 degrees, the pitch (L6) of the melting section is 42-62 mm, the width (T6) of the melting section is 15-21 mm, and the melting section (B2) is provided with a backflow groove along the axial direction of the melting section after the melting section (B1), the width (S3) of the reflux groove is 22-28 mm.

8. An injection molding structure as claimed in claim 7, wherein: the length (S4) of one section of molten reflux groove is 300mm, the length (S5) of the two sections of molten reflux grooves is 350mm, the distance (S6) from the bottom of the one section of molten reflux groove and the two sections of molten reflux grooves to the outer surface of the corresponding rod body is 1.5mm, and the number of the one section of molten reflux grooves and the two sections of molten reflux grooves is 5 respectively and are uniformly distributed on the corresponding spiral rib sections.

9. An injection molding structure as claimed in claim 7, wherein: the pitch of the side walls of the screw edges of the two corresponding screws in the first melting section is 2.9-3.5 mm, the pitch of the side walls of the screw edges of the two corresponding screws in the second melting section is 2.9-3.5 mm, and the pitch of the side walls of the screw edges of the two corresponding screws in the third melting section is 3.2-3.8 mm.

10. An injection molding structure according to any one of claims 2 to 5, wherein: the discharging section (C) comprises a discharging section (C1) and a discharging section (C2), wherein the discharging section (C1) and the discharging section (C2) are all three spiral edges, the pitch (L7) of the spiral edges of the discharging section is 270-290 mm, the width (T7) of the spiral edges of the discharging section is 28-34 mm, the normal included angle (a71) of the root of the discharging section is 9-11 degrees, the normal included angle (a72) of the upper part of the discharging section is 15-17 degrees, the pitch (L8) of the spiral edges of the discharging section is 150-170 mm, the width (T8) of the spiral edges of the discharging section is 15-21 mm, the normal included angle (a81) of the root of the discharging section is 9-11 degrees, and the normal included angle (a82) of the upper part of the discharging section is 15-17 degrees; the distance between the side walls of the screw edges of the two corresponding screw rods in the first discharging section is 4.7-5.3 mm, and the distance between the side walls of the screw edges of the two corresponding screw rods in the second discharging section is 3.2-3.8 mm.

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