阅读说明：本技术 一种pvc热收缩吹膜机专用螺杆 (Special screw rod of PVC thermal contraction inflation film manufacturing machine ) 是由 王林华 于 2019-03-25 设计创作，主要内容包括：本发明提供了一种PVC热收缩吹膜机专用螺杆,本发明涉及轻工机械技术领域,PVC热收缩吹膜机专用螺杆包括：螺杆主体,螺杆主体包括机筒,且机筒包裹于螺杆主体外侧,螺杆主体外侧从右至左分别设有阻流槽、进料段、熔化段、混炼段、3D挤量段以及均练段,且阻流槽与螺杆主体开槽连接,进料段、熔化段、混炼段、3D挤量段以及均练段均与螺杆主体固定为一体,均练段外壁开有一圈均匀排布的匀槽,且机筒外壁靠右侧套入有冷却水套,冷却水套下端左侧开有与其相通的进水口,且冷却水套上端右侧开有与其相通的出水口；本发明的有益效果在于：通过增加3D挤量段,提高螺杆的挤出量,利用冷却水套加强机筒的冷却效果,提高下料效率。(The invention provides a special screw for a PVC thermal contraction film blowing machine, which relates to the technical field of light industry machinery, and comprises: the screw comprises a screw main body, the screw main body comprises a machine barrel, the machine barrel is wrapped on the outer side of the screw main body, a flow resistance groove, a feeding section, a melting section, a mixing section, a 3D extrusion section and a homogenizing section are respectively arranged on the outer side of the screw main body from right to left, the flow resistance groove is connected with a groove of the screw main body, the feeding section, the melting section, the mixing section, the 3D extrusion section and the homogenizing section are fixed with the screw main body into a whole, a circle of uniformly distributed uniform grooves are formed in the outer wall of the homogenizing section, a cooling water jacket is sleeved on the outer wall of the machine barrel close to the right side, a water inlet communicated with the cooling water jacket is formed in the left side of the lower end; the invention has the beneficial effects that: through increasing the crowded volume section of 3D, improve the extrusion capacity of screw rod, utilize cooling jacket to strengthen the cooling effect of barrel, improve unloading efficiency.)

1. The utility model provides a special screw rod of PVC thermal contraction inflation film manufacturing machine, its characterized in that, special screw rod of PVC thermal contraction inflation film manufacturing machine includes:

a screw body (1), wherein the screw body (1) comprises a machine barrel (2) wrapped outside the screw body, the outer side of the screw main body (1) is respectively provided with a flow resistance groove (101), a feeding section (102), a melting section (103), a mixing section (104), a 3D extrusion section (105) and a homogenizing section (106) from right to left, the flow resistance groove (101) is in slotted connection with the screw main body (1), the feeding section (102), the melting section (103), the mixing section (104), the 3D extrusion section (105) and the mixing section (106) are fixed with the screw main body (1) into a whole, a circle of uniform grooves (107) which are uniformly distributed are formed on the outer wall of the homogenizing section (106), a cooling water jacket (204) is sleeved on the outer wall of the machine barrel (2) close to the right side, a water inlet (205) communicated with the cooling water jacket (204) is formed in the left side of the lower end of the cooling water jacket (204), and a water outlet (203) communicated with the cooling water jacket (204) is formed in the right side of the upper end of the cooling water jacket.

2. The special screw rod for the PVC thermal contraction film blowing machine according to the claim 1, characterized in that: and a connecting flange (201) is screwed in the right side of the upper end of the machine barrel (2).

3. The special screw rod for the PVC thermal contraction film blowing machine according to the claim 1, characterized in that: six exhaust grooves (206) are formed in the right side of the interior of the machine barrel (2), the six exhaust grooves (206) are 350mm in length, 3cm in depth and 5cm in width.

4. The special screw rod for the PVC thermal contraction film blowing machine according to the claim 1, characterized in that: the outer wall of the machine barrel (2) is provided with at least five through holes (202) which are distributed around the axis of the outer wall of the machine barrel (2), and the center of the lower part of the right side of the machine barrel (2) is provided with a vertically downward discharge groove (207).

5. The special screw rod for the PVC thermal contraction film blowing machine according to the claim 1, characterized in that: the diameter of the cooling water jacket (204) is 210mm multiplied by 380 mm.

Technical Field

The invention relates to the technical field of light industrial machinery, in particular to a special screw for a PVC thermal shrinkage film blowing machine.

Background

Barrels are, as in extrusion compression molding systems, an important part of the extruder. The machine barrel and the screw rod work in a matching way, the machine barrel contains the screw rod, and the screw rod rotates in the machine barrel. When the screw rotates to push the plastic to move forwards in the machine barrel, heat is transferred from the outside of the machine barrel to the plastic in the barrel, and the volume of the thread on the screw is gradually reduced, so that the plastic in the thread groove is uniformly mixed and plasticated under the action of various forces such as extrusion, turnover, shearing and the like, and is gradually melted to be in a viscous state while moving towards the front part of the machine barrel, and the plastication of the plastic is completed.

The special screw rod of current PVC thermal contraction inflation film manufacturing machine, screw rod mixing head and the section of equalling are worked together and appear the problem that output is low, and the time that melting section melting material stayed in the barrel is long, leads to producing the hot shearing temperature and rises for the cooling effect of barrel is poor, and current barrel cooling jacket is difficult to reach ideal cooling effect, and heat transfer is to charge door, reducing gear box, easily glues the difficult feeding of charge door and reduces output to PVC mixture, even the film face produces the phenomenon of thickness unevenness.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: aiming at the problems in the prior art, the special screw for the PVC thermal contraction film blowing machine is provided, the plasticizing condition is increased, the thermal shearing temperature is reduced, and the extrusion capacity is improved.

The technical problem to be solved by the invention is realized by adopting the following technical scheme: the utility model provides a special screw rod of PVC thermal contraction inflation film manufacturing machine, special screw rod of PVC thermal contraction inflation film manufacturing machine includes:

the screw rod main part, the screw rod main part is including wrapping up in the barrel in its outside, the screw rod main part outside is equipped with choke groove, feeding section, melting section, mixing section, 3D crowded volume section and the section of equalling from the right side to left side respectively, just choke groove with the screw rod main part fluting is connected, feeding section, melting section, mixing section, 3D crowded volume section and the section of equalling are all fixed as an organic whole with the screw rod main part, the section outer wall of equalling is opened has the even groove of round evenly arranging, and the barrel outer wall has emboliaed the cooling jacket by the right side, open cooling jacket lower extreme left side has rather than communicating water inlet, just it has rather than communicating delivery port to open cooling jacket upper end right side.

Preferably, the right side of the upper end of the machine barrel is screwed with a connecting flange.

Preferably, six exhaust grooves are formed in the right side of the interior of the machine barrel, the six exhaust grooves are 350mm in length, 3cm in depth and 5cm in width.

Preferably, the outer wall of the machine barrel is provided with at least five through holes which are distributed around the axis of the outer wall of the machine barrel, and the center below the right surface of the machine barrel is provided with a vertically downward discharge groove.

Preferably, the diameter of the cooling water jacket is 210mm × 380 mm.

Compared with the prior art, the invention has the beneficial effects that:

the special screw for the PVC thermal contraction film blowing machine can melt and extrude a PVC mixture through the 3D extrusion amount section, avoids the phenomenon of rise of thermal shearing temperature, is also favorable for improving the plasticizing effect of a high elastic state, extrudes the molten material more conveniently and rapidly, can increase twenty percent of output on the basis of the output of the existing screw, greatly improves the production efficiency of the screw, can add water into a cooling water jacket by utilizing a water inlet through the cooling water jacket with the diameter being lengthened to 210mm multiplied by 380mm to achieve the effect of cooling, can enhance the overall cooling effect of a machine barrel, accelerates the speed of the powdery PVC mixture when the PVC mixture is fed, is favorable for solving the problem that the PVC mixture is easy to stick to a feed port and is difficult to feed and reduce the output, can discharge residual gas in time through six exhaust grooves, and ensures that a product is difficult to generate bubbles, the extrusion amount is further improved.

Drawings

FIG. 1 is a schematic view of the screw of the present invention;

FIG. 2 is a right-side cross-sectional view of the equalizing section of the present invention;

FIG. 3 is a schematic cross-sectional view of the front end of the barrel of the present invention;

FIG. 4 is a schematic right end plan view of the barrel of the present invention;

fig. 5 is a schematic sectional view of the left end of the cooling water jacket of the present invention.

The labels in the figure are: 1-a screw body; 101-a flow resistance groove; 102-a feed section; 103-a melting section; 104-a mixing section; 105-3D extrusion section; 106-homogenizing section; 107-uniform groove; 2-machine barrel; 201-connecting flange; 202-a through hole; 203-water outlet; 204-cooling water jacket; 205-a water inlet; 206-an exhaust groove; 207-discharge chute.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 to 5, a special screw for a PVC thermal contraction film blowing machine, the special screw for a PVC thermal contraction film blowing machine comprises:

the screw comprises a screw body 1, the screw body 1 comprises a machine barrel 2 wrapped outside the screw body 1, the outer side of the screw body 1 is respectively provided with a flow resistance groove 101, a feeding section 102, a melting section 103, a mixing section 104, a 3D extrusion section 105 and a homogenizing section 106 from right to left, the flow resistance groove 101 is connected with a groove of the screw body 1, the feeding section 102, the melting section 103, the mixing section 104, the 3D extrusion section 105 and the homogenizing section 106 are fixed with the screw body 1 into a whole, the outer wall of the homogenizing section 106 is provided with a circle of uniformly distributed uniform grooves 107, a cooling water jacket 204 is sleeved on the outer wall of the machine barrel 2 close to the right side, the left side of the lower end of the cooling water jacket 204 is provided with a water inlet 205 communicated with the cooling water jacket 204, the right side of the upper end of the cooling water jacket 204 is provided with a water outlet 203 communicated with the cooling water jacket 204, the diameter of the cooling water jacket 204 is 210mm multiplied by 380mm, the width of the screw is 5cm, the added mixture can be effectively prevented from flowing out through the flow resistance groove 101, the mixture is convenient for a user to add through the feeding section 102, the PVC mixture can be melted and extruded through the 3D extrusion section 105 added between the homogenizing section 106 and the mixing section 104 of the screw main body 1, the phenomenon that the thermal shearing temperature is increased due to long time staying in the machine barrel 2 when the melting section 103 melts is avoided, the plasticizing effect of high elastic state is improved, the melting material can be extruded more conveniently and rapidly, the melting material cannot stay in the extruder to increase the thermal shearing temperature, the twenty percent yield can be increased on the basis of the existing screw yield through the increased 3D extrusion section 105, the production efficiency of the screw is greatly improved, the water can be added into the cooling water jacket 204 through the cooling water jacket 204 in the machine barrel 2 through the water inlet 205, reach the effect of cooling, can discharge the water in the cooling water jacket 204 through delivery port 203, because the diameter extension of cooling water jacket 204 is to 210mm 380mm, so not only can strengthen the overall cooling effect of barrel 2, and make powdered PVC mixture speed up when the unloading, can solve the problem that the PVC mixture easily glues the difficult feeding of charge door and leads to reducing the yield effectively like this, six pieces of length of rethread are 350mm, the degree of depth is 3cm, the width is 5 cm's exhaust groove 206, can in time discharge the residual gas, make the difficult bubble that produces of goods, further improved the extrusion capacity.

In this embodiment, a connecting flange 201 is screwed into the right side of the upper end of the machine barrel 2, and a user can conveniently connect with an external reduction gearbox through the connecting flange 201.

In this embodiment, the outer wall of the barrel 2 is provided with at least five through holes 202 arranged around the axis of the outer wall of the barrel 2, the center of the lower right side of the barrel 2 is provided with a vertically downward discharge groove 207, a user can conveniently detect the temperature of the mixture inside the barrel 2 through the through holes 202, and the excess material in the barrel 2 can be conveniently discharged by using the discharge groove 207.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, it should be noted that any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.