CN216658872U

CN216658872U - Film blowing machine rotary die head suitable for starch biodegradable plastics

Info

Publication number: CN216658872U
Application number: CN202122338931.0U
Authority: CN
Inventors: 单玉柱; 李鹏; 张洪生
Original assignee: Jilin Kaishun New Material Co ltd
Current assignee: Jilin Kaishun New Material Co ltd
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2022-06-03
Anticipated expiration: 2031-09-26

Abstract

The utility model discloses a film blowing machine rotating die head suitable for starch biodegradable plastics, which comprises an outer die, wherein a sealing bearing is arranged on the inner side of the outer die, a second gear is fixed inside the sealing bearing, a second sliding groove is formed inside the second gear, a spring is arranged inside the second sliding groove, a clamping block is fixed at one end of the spring, a die head is arranged outside the clamping block, a clamping groove is formed in the outer wall of the die head and matched with the clamping block, a hinge rod is hinged to the outer side of the clamping block, a limiting groove is formed inside the hinge rod, a limiting rod is arranged inside the limiting groove and fixed inside the outer die, the die head can be quickly disassembled and assembled by installing the outer die, the die head, the second gear, a first rack, a double gear and the clamping block, the structure is stable, the operation is simple and convenient, the efficiency of die head maintenance and replacement is effectively improved, and the service life of the die head is prolonged.

Description

Film blowing machine rotary die head suitable for starch biodegradable plastics

Technical Field

The utility model relates to the technical field of plastic processing equipment, in particular to a rotary die head of a film blowing machine suitable for starch biodegradable plastics.

Background

The principle of blown film forming is that plastic raw materials are pressed into a die head from the front end of a screw extruder, the viscous-state plastic raw materials are extruded into a pipe blank shape through the die head, the pipe blank is uniformly and freely blown into a tubular film with a larger diameter by compressed air introduced from the bottom of the die head, meanwhile, the tubular film is longitudinally stretched and gradually cooled in the upward traction process, then is flattened by a herringbone plate, is pulled by a traction roller and finally is wound into a barrel, and compared with common high-density polyethylene or low-density polyethylene, the starch biodegradable material has higher viscosity and poorer flowability, so that the phenomenon of non-uniformity of the materials in the mixing and plasticizing process is easily caused, the rapid pressure in the die head can be increased, and the traditional plastic blown film die head is difficult to accurately form the starch biodegradable material.

The die head that current plastics processing used generally is fixed, uses for a long time and forms easily and blocks up at the play membrane mouth, is unfavorable for the blown film shaping, and the die head often needs to overhaul the change after using a period of time simultaneously, otherwise long-term use will shorten its life greatly.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a film blowing machine rotary die head suitable for starch biodegradable plastics, which can be quickly disassembled and assembled by installing an external die, a die head, a second gear, a first rack, a double gear and a clamping block so as to solve the problem that the service life of the die head provided in the background technology is shortened due to difficulty in maintenance and replacement.

In order to achieve the purpose, the utility model provides the following technical scheme: a rotary die head of a film blowing machine suitable for starch biodegradable plastics comprises an outer die, wherein a sealing bearing is installed on the inner side of the outer die, a second gear is fixed inside the sealing bearing, a second sliding groove is formed inside the second gear, a spring is installed inside the second sliding groove, a clamping block is fixed at one end of the spring, a die head is installed on the outer side of the clamping block, a clamping groove is formed in the outer wall of the die head and matched with the clamping block, a hinge rod is hinged to the outer side of the clamping block, a limiting groove is formed inside the hinge rod, a limiting rod is arranged inside the limiting groove and fixed inside the outer die, a second hinge rod is hinged to one end, away from the clamping block, of the hinge rod, a second rack is hinged to one end, away from the hinge rod, of the second hinge rod, and an inner groove is formed in the outer side of the second rack, the inner groove is arranged in the outer die, a double gear is meshed with the outer side of the second rack, the double gear is arranged in the outer die, a first rack is meshed with the outer side of the double gear, a first sliding groove is formed in the outer side of the first rack, the first sliding groove is arranged in the second gear, a second spring is arranged at the bottom of the first sliding groove, and the second spring is fixed below the first rack.

Preferably, a first gear is meshed with the outer side of the second gear, a fixed shaft is fixed to the outer side of the first gear, a supporting rod penetrates through the fixed shaft, and a motor is mounted on the outer side of the fixed shaft and fixed to the outer side of the supporting rod.

Preferably, a spiral pushing rod is fixed on the outer side of the die head, a sealing ring is arranged on the outer side of the bottom of the die head, and a feeding pipe is connected to the outer side of the outer die in a penetrating manner.

Preferably, a sealing bearing is fixed on the inner side of the top of the die head, an inner air pipe is fixed inside the sealing bearing, the inner air pipe penetrates through the die head and the second gear, a fan is installed inside the inner air pipe, and a return pipe is installed inside the inner air pipe in a penetrating manner.

Preferably, a support rod is fixed to the outer side of the outer die, a support plate is fixed to the lower portion of the support rod, support legs are mounted to the lower portion of the support plate, a slide rail is fixed to the upper portion of the support plate, a slide block is arranged on the inner side of the slide rail, and the slide block is fixed to the lower portion of the second gear.

Preferably, an air pump is installed on the outer side of the outer die, an outer air pipe is connected to the outer side of the air pump, an air ring is installed at one end, far away from the air pump, of the outer air pipe, and multiple groups of air blowing holes are formed in the outer side of the air ring.

The utility model has the technical effects and advantages that:

1. through installation external mold, die head, second gear, first rack, double gear and fixture block, ability quick assembly disassembly die head, the structure is firm, and is easy and simple to handle, and the effectual efficiency that improves the die head maintenance and change prolongs the life of die head.

2. By installing the air pump, the air ring, the inner air pipe and the return pipe, the thickness of the blown film and the direction of the blown film are controlled by the internal air and the external air, so that the hot-melt degradable plastic is uniformly blown out.

3. Through installing first gear, second gear, slider and slide rail, rotatory die head improves the rotatory steadiness of die head through the slider in the inside slip of slide rail in the blown film, avoids the membrane raw materials to block up, the quality and the efficiency of effectual improvement blown film.

Drawings

Fig. 1 is a front sectional view of the overall structure of the present invention.

FIG. 2 is a top sectional view of the wind ring and outer die of the present invention.

Fig. 3 is an enlarged view of the structure a of the present invention.

Fig. 4 is an enlarged view of the structure B of the present invention.

In the figure: 1-support plate, 2-air pump, 3-support rod, 4-outer air pipe, 5-air ring, 6-outer mold, 7-die head, 8-spiral pushing rod, 9-feed pipe, 10-first gear, 11-motor, 12-fixed shaft, 13-second gear, 14-sliding rail, 15-sliding block, 16-return pipe, 17-inner air pipe, 18-supporting leg, 19-fan, 20-air blowing hole, 21-first rack, 22-double gear, 23-first sliding chute, 24-inner groove, 25-second rack, 26-spring, 27-second sliding chute, 28-clamping block, 29-clamping groove and 30-hinged rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model provides a film blowing machine rotating die head suitable for starch biodegradable plastics as shown in figures 1-4, which comprises an outer die 6, wherein a sealing bearing is arranged at the inner side of the outer die 6, a second gear 13 is fixed inside the sealing bearing, a second chute 27 is arranged inside the second gear 13, a spring 26 is arranged inside the second chute 27, a clamping block 28 is fixed at one end of the spring 26, a die head 7 is arranged outside the clamping block 28, a clamping groove 29 is arranged on the outer wall of the die head 7, the clamping groove 29 is matched with the clamping block 28, a hinge rod 30 is hinged outside the clamping block 28, a limiting groove is arranged inside the hinge rod 30, a limiting rod is arranged inside the limiting groove and fixed inside the outer die 6, a second hinge rod is hinged at one end of the hinge rod 30 far away from the clamping block 28, a second rack 25 is hinged at one end of the second hinge rod far away from the hinge rod 30, an inner groove 24 is arranged outside the second rack 25, the inner groove 24 is arranged inside the outer die 6, the double gear 22 is meshed with the outer side of the second rack 25, the double gear 22 is arranged inside the outer die 6, the first rack 21 is meshed with the outer side of the double gear 22, the first sliding groove 23 is arranged on the outer side of the first rack 21, the first sliding groove 23 is arranged inside the second gear 13, the second spring is arranged at the bottom of the first sliding groove 23, the second spring is fixed below the first rack 21 and is pressed downwards to compress the second spring downwards and drive the double gear 22 to rotate anticlockwise so as to drive the second rack 25 to slide rightwards at the bottom of the inner groove 24 and drive the second hinge rod to move rightwards, so as to drive one end of the hinge rod 30 to move rightwards and drive the hinge rod 30 to rotate anticlockwise, so as to drive the fixture block 28 to slide leftwards inside the second sliding groove 27 and compress the spring 26, and then the bottom of the die head 7 is clamped inside the second gear 13, the first rack 21 is loosened, the reset of the spring 26 drives the clamping block 28 to be clamped into the inner side of the clamping groove 29, meanwhile, the second spring resets to drive the first rack 21 to reset, the die head 7 downwards compresses the sealing ring, the installation tightness of the die head 7 is improved, and the die head 7 can be quickly disassembled by pressing the first rack 21 again.

In this embodiment, a first gear 10 is engaged with the outer side of a second gear 13, a fixed shaft 12 is fixed on the outer side of the first gear 10, the fixed shaft 12 penetrates through the support rod 3, a motor 11 is installed on the outer side of the fixed shaft 12, the motor 11 is fixed on the outer side of the support rod 3, a spiral pushing rod 8 is fixed on the outer side of the die head 7, a sealing ring is arranged on the outer side of the bottom of the die head 7, a feed pipe 9 is connected on the outer side of the outer die 6 in a penetrating manner, the fixed shaft 12 and the first gear 10 are driven by starting the motor 11 to rotate anticlockwise, thereby driving the second gear 13 to rotate counterclockwise, thereby driving the sliding block 15 to slide inside the sliding rail 14, simultaneously, the die head 7 is driven to rotate anticlockwise in the outer die 6, hot melting raw materials are added into the die head 7 through the feeding pipe 9, the hot melting raw material is pushed upwards by the rotation of the spiral pushing rod 8 driven by the die head 7, and an annular film is formed in the gap between the outer die 6 and the die head 7.

In this embodiment, a sealing bearing is fixed on the inner side of the top of the die head 7, an inner air pipe 17 is fixed inside the sealing bearing, the inner air pipe 17 penetrates through the die head 7 and the second gear 13, a fan 19 is installed inside the inner air pipe 17, a return pipe 16 is installed inside the inner air pipe 17, an air pump 2 is installed on the outer side of the outer die 6, an outer air pipe 4 is connected to the outer side of the air pump 2, an air ring 5 is installed at one end, away from the air pump 2, of the outer air pipe 4, a plurality of groups of blowing holes 20 are formed in the outer side of the air ring 5, the air pump 2 and the fan 19 are started, the air is blown to the outside of the annular film through the outer air pipe 4 and the air blowing holes 20 at the outside of the air ring 5, so that the annular film moves uniformly upward, meanwhile, the air is blown upwards inside the annular membrane through the inner air pipe 17, so that the annular membrane is uniformly lifted upwards after being expanded outwards, and the air inside the annular membrane flows back through the return pipe 16, so that the annular membrane is prevented from being expanded excessively.

In this embodiment, the support rod 3 is fixed on the outer side of the outer die 6, the support plate 1 is fixed below the support rod 3, the support leg 18 is installed below the support plate 1, the slide rail 14 is fixed above the support plate 1, the slide block 15 is arranged on the inner side of the slide rail 14, the slide block 15 is fixed below the second gear 13, the outer die 6 is fixed above the support plate 1 by installing the support plate 1, the support rod 3 and the support leg 18, the stability of film blowing is improved, the slide block 15 slides inside the slide rail 14, so that the second gear 13 and the die head 7 stably rotate during film blowing, and the quality of film forming is improved.

This practical theory of operation: the utility model relates to a rotary die head of a film blowing machine suitable for starch biodegradable plastics, which is characterized in that firstly, a first rack 21 is pressed downwards to compress a second spring downwards, a double gear 22 is driven to rotate anticlockwise to drive a second rack 25 to slide rightwards at the bottom of an inner groove 24, a second hinged rod is driven to move rightwards, one end of a hinged rod 30 is driven to move rightwards, a hinged rod 30 is driven to rotate anticlockwise, a clamping block 28 is driven to slide leftwards in a second sliding groove 27 and compress a spring 26, then the bottom of a die head 7 is clamped into the inner side of a second gear 13, the first rack 21 is loosened, the clamping block 28 is clamped into the inner side of a clamping groove 29 through the resetting of the spring 26, meanwhile, the second spring resets the first rack 21, a sealing ring is pressed downwards through the die head 7, the installation tightness of the die head 7 is improved, the die head 7 can be quickly disassembled by pressing the first rack 21 again, this device can quick assembly disassembly die head 7 through pressing first rack 21, and the structure is firm, and is easy and simple to handle, and the effectual efficiency that improves die head 7 maintenance and change prolongs die head 7's life.

The starting motor 11 drives the fixed shaft 12 and the first gear 10 to rotate anticlockwise, so as to drive the second gear 13 to rotate anticlockwise, so as to drive the sliding block 15 to slide in the sliding rail 14, meanwhile, the die head 7 is driven to rotate anticlockwise in the outer die 6, hot melting raw materials are added into the die head 7 through the feeding pipe 9, the hot melting raw materials are pushed upwards through the rotation of the die head 7 driving the spiral pushing rod 8, an annular film is formed in the gap between the outer die 6 and the die head 7, the air pump 2 and the fan 19 are started, air is blown to the outer side of the annular film through the outer air pipe 4 and the air ring 5, so that the annular film uniformly moves upwards, meanwhile, air is blown upwards in the annular film through the inner air pipe 17, so that the annular film is uniformly lifted upwards after being expanded outwards, the air in the annular film flows back through the return pipe 16, excessive expansion of the annular film is avoided, and the device controls the thickness of the blown film and the direction of the blown film through the inner air and the outer air blowing, and the rotary die head avoids the blockage of the film raw materials, so that the hot-melt degradable plastic is uniformly blown out, and the quality and the efficiency of the film blowing are effectively improved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. A rotary die head of a film blowing machine suitable for starch biodegradable plastics comprises an outer die (6), and is characterized in that: the sealing bearing is installed on the inner side of the outer die (6), a second gear (13) is fixed inside the sealing bearing, a second sliding groove (27) is formed in the second gear (13), a spring (26) is installed inside the second sliding groove (27), a clamping block (28) is fixed at one end of the spring (26), a die head (7) is installed on the outer side of the clamping block (28), a clamping groove (29) is formed in the outer wall of the die head (7), the clamping groove (29) is matched with the clamping block (28), a hinge rod (30) is hinged to the outer side of the clamping block (28), a limiting groove is formed in the inner portion of the hinge rod (30), a limiting rod is arranged inside the limiting groove and fixed inside the outer die (6), the hinge rod (30) is far away from one end of the clamping block (28) is hinged to a second hinge rod, the second hinge rod is kept away from the one end of hinge rod (30) is articulated to have second rack (25), the outside of second rack (25) is provided with inside groove (24), inside groove (24) are seted up in the inside of external mold (6), the outside meshing of second rack (25) has double gear (22), double gear (22) install in the inside of external mold (6), the outside meshing of double gear (22) has first rack (21), the outside of first rack (21) is provided with first spout (23), first spout (23) are seted up in the inside of second gear (13), the second spring is installed to the bottom of first spout (23), the second spring is fixed in the below of first rack (21).

2. The rotary die head of the film blowing machine suitable for the starch biodegradable plastics, which is disclosed by the claim 1, is characterized in that: the outer side of the second gear (13) is meshed with a first gear (10), a fixed shaft (12) is fixed to the outer side of the first gear (10), the supporting rod (3) penetrates through the fixed shaft (12), a motor (11) is installed on the outer side of the fixed shaft (12), and the motor (11) is fixed to the outer side of the supporting rod (3).

3. The rotary die head of the film blowing machine suitable for the starch biodegradable plastics, which is disclosed by the claim 1, is characterized in that: the outer side of the die head (7) is fixed with a spiral pushing rod (8), a sealing ring is arranged on the outer side of the bottom of the die head (7), and the outer side of the outer die (6) is connected with a feeding pipe (9) in a penetrating mode.

4. The rotary die head of the film blowing machine suitable for the starch biodegradable plastics, which is disclosed by the claim 1, is characterized in that: a sealing bearing is fixed on the inner side of the top of the die head (7), an inner air pipe (17) is fixed inside the sealing bearing, the inner air pipe (17) penetrates through the die head (7) and the second gear (13), a fan (19) is installed inside the inner air pipe (17), and a return pipe (16) is installed inside the inner air pipe (17) in a penetrating mode.

5. The rotary die head of the film blowing machine suitable for the starch biodegradable plastics, which is disclosed by the claim 1, is characterized in that: the outside of external mold (6) is fixed with bracing piece (3), the below of bracing piece (3) is fixed with backup pad (1), supporting leg (18) are installed to the below of backup pad (1), the top of backup pad (1) is fixed with slide rail (14), the inboard of slide rail (14) is provided with slider (15), slider (15) are fixed in the below of second gear (13).

6. The rotary die head of the film blowing machine suitable for the starch biodegradable plastics, which is disclosed by the claim 1, is characterized in that: air pump (2) are installed in the outside of external mold (6), the outside of air pump (2) is connected with outer trachea (4), outer trachea (4) are kept away from wind ring (5) are installed to the one end of air pump (2), the outside of wind ring (5) is provided with multiunit blowhole (20).