CN111844706A

CN111844706A - Plastic film blowing machine

Info

Publication number: CN111844706A
Application number: CN202010726297.5A
Authority: CN
Inventors: 孙乐强; 徐鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-25
Filing date: 2020-07-25
Publication date: 2020-10-30

Abstract

The invention relates to the field of film blowing machines, in particular to a plastic film blowing machine, which comprises a film blowing mechanism, a feeding mechanism, a tensioning mechanism, an exhaust mechanism and a cooling system, wherein the feeding mechanism and the tensioning mechanism are respectively arranged at the front side and the rear side of the film blowing mechanism, the exhaust mechanism is arranged at the top end of the film blowing mechanism, the cooling system is arranged in the film blowing mechanism, the film blowing mechanism comprises a vertical frame, a film blowing die head, a fan, an inner guide pipe and an outer guide pipe, the bottom side of the vertical frame is fixedly connected with the film blowing die head and the fan, under the elastic force action of a spring, a movable roller is pushed by a clamping fork to press a front steering roller, so that cylindrical film materials can be fully extruded, residual air during the lamination of the film materials can be exhausted, meanwhile, a compression roller which can slide up and down is arranged on a rear frame, so that in the transmission process of the film materials, the long tensioning state of the film material is kept, and the phenomenon of wrinkles or bubbles is avoided.

Description

Plastic film blowing machine

Technical Field

The invention relates to the field of film blowing machines, in particular to a plastic film blowing machine.

Background

The inflation film manufacturing machine heats and melts plastic granules and blows into the film again, and the inflation film manufacturing machine divides a lot of, has PE, POF, PVC etc. what blow off with brand-new granule is new material, and the color and luster is all called, and is clean, and the sack is tensile good, and its course of working is: adding dried polyethylene particles into a lower hopper, feeding the polyethylene particles into a screw rod from the hopper by the weight of the particles, after the granules are contacted with inclined ribs of threads, generating a thrust force which is vertical to the inclined ribs by the rotating inclined ribs to the plastic, pushing the plastic particles forwards, gradually melting the plastic particles due to the friction between the plastic and the screw rod and between the plastic and a machine barrel and the collision and friction among the particles in the pushing process, filtering the molten plastic by a machine head to remove impurities, discharging the molten plastic from a die head die orifice, cooling by a wind ring, blowing, passing through a herringbone plate, a traction roller, and coiling to roll the finished film into a tube.

The existing plastic film blowing machine mostly adopts an external cooling mode to cool the plastic film, and because high-pressure and high-pressure gas exists in the plastic film, the cooling effect is not ideal, and the herringbone plate is easy to scrape the outer wall of the plastic film, so that the processing quality is difficult to ensure.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a plastic film blowing machine.

The technical scheme adopted by the invention for solving the technical problems is as follows: a plastic film blowing machine comprises a film blowing mechanism, a feeding mechanism, a tensioning mechanism, an exhaust mechanism and a cooling system, wherein the feeding mechanism and the tensioning mechanism are respectively arranged on the front side and the rear side of the film blowing mechanism;

the film blowing mechanism comprises a vertical frame, a film blowing die head, a fan, an inner guide pipe and an outer guide pipe, wherein the bottom side of the vertical frame is fixedly connected with a blow molding die head and the fan, the output end of the fan is connected with the inner guide pipe and the outer guide pipe, and a pressure relief valve is arranged on the blow molding die head.

The feeding mechanism comprises a front frame, a material conveying cylinder, a speed reducer, a servo motor, a feeding bin, electric heating plates, a pressurizing port, a rotating shaft and spiral blades, wherein screws of the front frame are fixed on one side of the vertical frame, the material conveying cylinder is fixed in the front frame, the speed reducer is fixed on one side end face of the material conveying cylinder through screws, the other end of the material conveying cylinder is provided with the pressurizing port, the servo motor is fixed on the upper side of the speed reducer through screws, the output end of the servo motor is fixedly connected with the input end of the speed reducer, the output end of the speed reducer penetrates through the rotating shaft of the material conveying cylinder, the spiral blades are fixedly welded on the outer side of the rotating shaft, and the electric heating plates are fixedly embedded in the.

The tensioning mechanism comprises a rear frame, vertical grooves, a compression roller, a guide roller and two guide rollers, the rear frame is fixed to one side of the vertical frame through screws, the vertical grooves are symmetrically formed in two sides of the rear frame, the compression roller is embedded between the vertical grooves, the guide roller and the two guide rollers are connected between two opposite inner walls of the rear frame in a rotating mode through bearings, and the guide roller is located directly above the two guide rollers.

Specifically, exhaust mechanism includes preceding steering roll, back steering roll, movable roll, clamp fork, spring, guide pillar, preceding steering roll and back steering roll all rotate through the bearing and inlay the top of establishing at the grudging post, preceding steering roll and back steering roll are located same horizontal plane, one side that preceding steering roll kept away from the back steering roll is provided with the clamp fork, it inlays and is equipped with the movable roll to rotate through the bearing between two relative lateral walls of clamp fork, two guide pillars of opposite side fixedly connected with of clamp fork, all passing the grudging post of guide pillar, the outside of guide pillar just is located and all overlaps between grudging post and the clamp fork and is equipped with the spring.

Specifically, cooling system includes interior wind ring, outer wind ring, connecting pipe, reinforced pipe, an air pocket, No. two air pockets and filling tube, the fixed upside middle part of establishing at the blow molding die head that inlays of filling tube, the outside cover of filling tube is equipped with a plurality of interior wind rings, the outside cover of interior wind ring is equipped with a plurality of outer wind rings, interior wind ring all communicates through connecting pipe and filling tube, outer wind ring all is through reinforced pipe and grudging post fixed connection, outer wind ring inboard equidistance is provided with a plurality of air pockets, interior wind ring outside equidistance is provided with a plurality of air pockets No. two.

Specifically, the air outlet direction of the first air hole is tangent to the inner wall of the outer air ring, and the air outlet direction of the second air hole is tangent to the outer wall of the inner air ring.

Specifically, the inner guide pipe penetrates through the film blowing die head to be communicated with the filling pipe, and the outer guide pipe is communicated with the reinforcing pipe.

Specifically, the inner wind ring and the outer wind ring are gradually changed into an elliptical structure from bottom to top.

The invention has the beneficial effects that:

(1) according to the plastic film blowing machine, under the action of the elastic force of the spring, the movable roller is pushed by the clamping fork to tightly press the front steering roller, so that a cylindrical film material can be fully extruded, residual air in the process of laminating the film material can be exhausted, meanwhile, the rear rack is provided with the press roller capable of sliding up and down, the long tensioning state of the film material can be kept in the transmission process of the film material, and the phenomenon of wrinkles or bubbles is avoided.

(2) According to the plastic film blowing machine, a molten raw material is blown into a cylindrical structure through the film blowing die head, the inner side and the outer side of the cylindrical structure film are respectively provided with the inner air ring and the outer air ring, air is extracted by the fan and guided into the inner air ring and the outer air ring, so that cooling air flow can be attached to the inner surface and the outer surface of the film for cooling, the orientation of the air holes is tangent to the annular structure, the film material can be prevented from being damaged by pneumatic direct blowing, the cooling efficiency is high, and the film material can be prevented from being easily adhered, deformed and the like in the processing process.

(3) According to the plastic film blowing machine, the inner air ring and the outer air ring are arranged in a plurality of numbers, the inner air ring and the outer air ring are sequentially changed from the circular structure to the elliptical structure from bottom to top, so that the deformation amount of a film material is smaller when the film material is extruded by the movable roller and the front steering roller, the film material is prevented from being excessively stretched, the inverted V-shaped inclined plate of an original forming machine is eliminated, and the risk of scratching the surface of the film material can be avoided.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a side view of a plastic film blowing machine according to the present invention;

FIG. 2 is a top view of a plastic film blowing machine according to the present invention;

FIG. 3 is a sectional view of a feed delivery cylinder of a plastic film blowing machine according to the present invention;

FIG. 4 is an enlarged view of the structure at A in FIG. 1;

FIG. 5 is a top view of a vertical stand in a plastic film blowing machine provided by the present invention;

FIG. 6 is a first schematic view of a cooling structure in a plastic film blowing machine according to the present invention;

fig. 7 is a second schematic view of a cooling structure in the plastic film blowing machine provided by the invention.

In the figure: 1. a film blowing mechanism; 11. erecting a frame; 12. a film blowing die head; 13. a fan; 14. an inner draft tube; 15. an outer draft tube; 2. a feeding mechanism; 21. a front frame; 22. a delivery cylinder; 23. a speed reducer; 24. a servo motor; 25. a feeding bin; 26. an electric hot plate; 27. a pressurizing port; 28. a rotating shaft; 29. a helical blade; 3. a tensioning mechanism; 31. a rear frame; 32. a vertical slot; 33. a compression roller; 34. a first guide roller; 35. a second guide roller; 4. an exhaust mechanism; 41. a front steering roller; 42. a rear steering roller; 43. a movable roller; 44. a clamping fork; 45. a spring; 46. a guide post; 5. a cooling system; 51. an inner wind ring; 52. an outer wind ring; 53. a connecting pipe; 54. reinforcing the pipe; 55. a first air hole; 56. a second air hole; 57. and (6) filling the tube.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1-7, the plastic film blowing machine according to the present invention includes a film blowing mechanism 1, a feeding mechanism 2, a tensioning mechanism 3, an exhaust mechanism 4, and a cooling system 5, where the feeding mechanism 2 and the tensioning mechanism 3 are respectively disposed on the front and rear sides of the film blowing mechanism 1, the exhaust mechanism 4 is disposed on the top end of the film blowing mechanism 1, the cooling system 5 is disposed in the film blowing mechanism 1, the film blowing mechanism 1 includes a vertical frame 11, a film blowing die head 12, a fan 13, an inner flow guide tube 14, and an outer flow guide tube 15, the bottom side of the vertical frame 11 is fixedly connected with the blow die head 12 and the fan 13, the output end of the fan 13 is connected with the inner flow guide tube 14 and the outer flow guide tube 15, the blow die head 12 is provided with a pressure relief valve, and the pressure relief valve is disposed to be opened when the air pressure in the film is too high, so as to exhaust hot.

Specifically, feed mechanism 2 includes preceding frame 21, feed cylinder 22, speed reducer 23, servo motor 24, adds feed bin 25, electric plate 26, pressure port 27, pivot 28 and helical blade 29, preceding frame 21 screw fixation is in one side of grudging post 11, the screw is fixed with feed cylinder 22 in the preceding frame 21, screw fixation has speed reducer 23 on a side end face of feed cylinder 22, the other end of feed cylinder 22 is provided with pressure port 27, the upside screw fixation of speed reducer 23 has servo motor 24, servo motor 24's output and speed reducer 23's input fixed connection, feed cylinder 22 fixedly connected with pivot 28 is passed to the output of speed reducer 23, the fixed welding in the outside of pivot 28 has helical blade 29, add feed bin 25 inner wall fixed the embedding and be equipped with a plurality of electric plate 26, pressure port 27 is the toper form, and electric plate 26 electrically connected with the temperature controller, the operation of the electric heating plate 26 is controlled by the instruction of the temperature controller.

Specifically, straining device 3 includes rear frame 31, perpendicular groove 32, compression roller 33, a guide roller 34 and No. two guide rollers 35, rear frame 31 screw fixation is in one side of grudging post 11, rear frame 31 'S bilateral symmetry has seted up perpendicular groove 32, two it is equipped with compression roller 33 to inlay between the perpendicular groove 32, it is connected with a guide roller 34 and No. two guide rollers 35 to rotate through the bearing between two relative inner walls of rear frame 31, wherein a guide roller 34 is located No. two guide rollers 35 directly over, and the film is "S" shape and passes a guide roller 34 and No. two guide rollers 35, and transmission resistance is great, and when draw gear pull the film, the film can abundant tensioning, and compression roller 33' S setting can keep the film of guide roller anterior segment in the tensioning state.

Specifically, the air exhaust mechanism 4 comprises a front steering roller 41, a rear steering roller 42, a movable roller 43, a clamping fork 44, a spring 45 and a guide post 46, the front steering roller 41 and the rear steering roller 42 are rotatably embedded at the top of the vertical frame 11 through bearings, the front steering roller 41 and the rear steering roller 42 are positioned in the same horizontal plane, a clamping fork 44 is arranged on one side of the front steering roller 41 far away from the rear steering roller 42, a movable roller 43 is rotatably embedded between two opposite side walls of the clamping fork 44 through a bearing, the other side of the clamping fork 44 is fixedly connected with two guide posts 46, the guide posts 46 penetrate through the vertical frame 11, springs 45 are sleeved on the outer sides of the guide posts 46 and between the vertical frame 11 and the clamping forks 44, the front steering roller 41, the rear steering roller 4 and the movable roller 43 are consistent in height, the movable roller 43 plays a role in pressing, and the steering roller 41 and the rear steering roller 4 play a role in steering.

Specifically, cooling system 5 includes interior wind ring 51, outer wind ring 52, connecting pipe 53, reinforcement pipe 54, a gas pocket 55, No. two gas pockets 56 and filling pipe 57, filling pipe 57 is fixed to be inlayed in the upside middle part of blow molding die head 12, the outside cover of filling pipe 57 is equipped with a plurality of interior wind rings 51, the outside cover of interior wind ring 51 is equipped with a plurality of outer wind rings 52, interior wind ring 51 all communicates with filling pipe 57 through connecting pipe 53, outer wind ring 52 all is through reinforcement pipe 54 and grudging post 11 fixed connection, the inboard equidistance of outer wind ring 52 is provided with a plurality of gas pockets 55, the inboard equidistance of interior wind ring 51 is provided with a plurality of No. two gas pockets 56, and the adjacent side of outer wind ring 52 and interior wind ring 51 is provided with the gas pocket, and the opposite direction of slope of a gas pocket 55 and No. two gas pockets 56 for form the air current opposite in the inside and outside of film.

Specifically, the air outlet direction of the first air hole 55 is tangent to the inner wall of the outer air ring 52, the air outlet direction of the second air hole 56 is tangent to the outer wall of the inner air ring 51, the air outlet direction is not opposite to the surface of the film, the air flow impact force can be prevented from acting on the film, and meanwhile, the film can be cooled quickly by rotating air flow.

Specifically, the inner draft tube 14 passes through the film blowing die head 12 and is communicated with the filling tube 57, the outer draft tube 15 is communicated with the reinforcing tube 54, air is supplied to the inner air ring 51 through the filling tube 57, and air is supplied to the outer air ring 52 through the outer draft tube 15.

Specifically, the inner wind rings 51 and the outer wind rings 52 are gradually changed into an elliptical structure from bottom to top, and the circumferential lengths of the upper and lower inner wind rings 51 and the outer wind rings 52 are not changed.

The working principle is that the material conveying cylinder 22 is filled with plastic particles, the plastic particles are heated and melted by the electric heating plate 26, the servo motor 24 drives the rotating shaft 28, the rotating shaft 29 is further enabled to transmit the melted raw materials forward to enter the film blowing die head 12, the annular outlet of the film blowing die head 12 can be blown to form a plastic film with an annular structure, the filling pipe 57 and the outer guide pipe 15 are inflated by the fan 13, high-pressure gas is obliquely ejected from the first air hole 55 and the second air hole 56, the air flow flows tightly attached to the inner surface and the outer surface of the plastic film, the heat of the film can be taken away quickly, the film is cooled efficiently, meanwhile, a high-pressure environment is formed in the plastic film, the plastic film can expand, the top end of the plastic film passes through the front steering roller 41 and the movable roller 43 and then passes through the steering roller 42, the press roller 33, the first guide roller 34 and the second guide roller 35, wherein, spring 45 effectively supports and presses the antedisplacement of clamp fork 44 for the live-rollers 43 can effectively support tight preceding steering roll 41, thereby can avoid the interior residual air of plastic film, and it is worth mentioning that interior wind ring 51 and outer wind ring 52 gradually become oval structure by circular structure from lower to upper in proper order, thereby make plastic film be oval structure at the in-process gradual change that upwards transmits, avoided traditional "people" font splint to scrape the drawback on colored plastic film surface easily.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A plastic film blowing machine comprises a film blowing mechanism (1), a feeding mechanism (2), a tensioning mechanism (3), an exhaust mechanism (4) and a cooling system (5), and is characterized in that the feeding mechanism (2) and the tensioning mechanism (3) are respectively arranged on the front side and the rear side of the film blowing mechanism (1), the exhaust mechanism (4) is arranged at the top end of the film blowing mechanism (1), and the cooling system (5) is arranged in the film blowing mechanism (1);

the film blowing mechanism (1) comprises a vertical frame (11), a film blowing die head (12), a fan (13), an inner guide pipe (14) and an outer guide pipe (15), wherein the bottom side of the vertical frame (11) is fixedly connected with the film blowing die head (12) and the fan (13), the output end of the fan (13) is connected with the inner guide pipe (14) and the outer guide pipe (15), and a pressure relief valve is arranged on the film blowing die head (12).

2. A plastic film blowing machine according to claim 1, characterized in that: the feeding mechanism (2) comprises a front frame (21), a material conveying cylinder (22), a speed reducer (23), a servo motor (24), a feeding bin (25), an electric heating plate (26), a pressurizing opening (27), a rotating shaft (28) and helical blades (29), wherein the front frame (21) is fixed on one side of the vertical frame (11) through screws, the material conveying cylinder (22) is fixed on the front frame (21), the speed reducer (23) is fixed on one side end face of the material conveying cylinder (22) through screws, the pressurizing opening (27) is formed in the other end of the material conveying cylinder (22), the servo motor (24) is fixed on the upper side of the speed reducer (23), the output end of the servo motor (24) is fixedly connected with the input end of the speed reducer (23), the output end of the speed reducer (23) penetrates through the material conveying cylinder (22) and is fixedly connected with the rotating shaft (28), the helical blades (29) are fixedly welded on the outer side, a plurality of electric heating plates (26) are fixedly embedded in the inner wall of the feeding bin (25).

3. A plastic film blowing machine according to claim 1, characterized in that: straining device (3) include rear frame (31), erect groove (32), compression roller (33), guide roller (34) and No. two guide rollers (35), rear frame (31) screw fixation is in one side of grudging post (11), vertical groove (32), two have been seted up to the bilateral symmetry of rear frame (31) it is equipped with compression roller (33) to erect to inlay between groove (32), rotate through the bearing between two relative inner walls of rear frame (31) and be connected with guide roller (34) and No. two guide rollers (35), wherein guide roller (34) are located No. two guide rollers (35) directly over.

4. A plastic film blowing machine according to claim 1, characterized in that: the exhaust mechanism (4) comprises a front steering roller (41), a rear steering roller (42), a movable roller (43), a clamping fork (44), a spring (45) and a guide pillar (46), wherein the front steering roller (41) and the rear steering roller (42) are rotatably embedded at the top of the vertical frame (11) through bearings, the front steering roller (41) and the rear steering roller (42) are located on the same horizontal plane, the clamping fork (44) is arranged on one side, away from the rear steering roller (42), of the front steering roller (41), the movable roller (43) is rotatably embedded between two opposite side walls of the clamping fork (44) through the bearings, two guide pillars (46) are fixedly connected to the other side of the clamping fork (44), the guide pillars (46) penetrate through the vertical frame (11), and the springs (45) are sleeved on the outer sides of the guide pillars (46) and between the vertical frame (11) and the clamping fork (44).

5. A plastic film blowing machine according to claim 1, characterized in that: cooling system (5) include interior wind ring (51), outer wind ring (52), connecting pipe (53), reinforced pipe (54), air pocket (55), No. two air pockets (56) and filling pipe (57), the fixed upside middle part of inlaying in blow molding die head (12) of filling pipe (57), the outside cover of filling pipe (57) is equipped with a plurality of interior wind rings (51), the outside cover of interior wind ring (51) is equipped with a plurality of outer wind rings (52), interior wind ring (51) all communicate through connecting pipe (53) and filling pipe (57), outer wind ring (52) all are through reinforced pipe (54) and grudging post (11) fixed connection, outer wind ring (52) inboard equidistance is provided with a plurality of air pockets (55), interior wind ring (51) outside equidistance is provided with a plurality of air pockets (56).

6. A plastic film blowing machine according to claim 5, characterized in that: the air outlet direction of the first air hole (55) is tangent to the inner wall of the outer air ring (52), and the air outlet direction of the second air hole (56) is tangent to the outer wall of the inner air ring (51).

7. A plastic film blowing machine according to claim 1 or 5, characterized in that: the inner guide pipe (14) penetrates through the film blowing die head (12) to be communicated with the filling pipe (57), and the outer guide pipe (15) is communicated with the reinforcing pipe (54).

8. A plastic film blowing machine according to claim 5, characterized in that: the inner wind rings (51) and the outer wind rings (52) are gradually changed into elliptical structures from bottom to top.