CN114643688B

CN114643688B - Plastic particle heating and melting molding film blowing device and use method thereof

Info

Publication number: CN114643688B
Application number: CN202210167265.5A
Authority: CN
Inventors: 耿进辉; 酒国利
Original assignee: Hebei Yuhong Packing Decoration Co ltd
Current assignee: Hebei Yuhong Packing Decoration Co ltd
Priority date: 2022-02-23
Filing date: 2022-02-23
Publication date: 2023-06-02
Anticipated expiration: 2042-02-23
Also published as: CN114643688A

Abstract

The invention relates to the field of plastic particle forming film blowing devices, in particular to a forming film blowing device for heating and melting plastic particles and a using method thereof, wherein the forming film blowing device comprises a U-shaped supporting frame and a film blowing mechanism; the inner walls of the bottom and the top of the U-shaped support frame are respectively provided with a material conveying mechanism and a sorting and winding mechanism; the end part of the supporting plate is provided with a film blowing cylinder, and a die is arranged in the film blowing cylinder; a cooling mechanism is arranged on the film blowing cylinder; the hollow rod is arranged on the die; the supporting rod is rotatably arranged on the material conveying mechanism; the guide cone shell is arranged on the outer peripheral wall of the hollow rod; the plurality of groups of worms a are rotationally connected with the inner wall of the top of the guide cone shell; the rotation shaft rotates and sets up on the direction cone shell inner wall, is provided with the worm wheel a with worm a meshing in the axis of rotation, sets up the gyro wheel in the axis of rotation, is provided with the bar groove that supplies the gyro wheel to pass on the direction cone shell. The invention not only ensures the contact guiding stabilization effect on the plastic film, but also can separate the plastic film from the guiding cone shell to prevent the plastic film from winding and knotting.

Description

Plastic particle heating and melting molding film blowing device and use method thereof

Technical Field

The invention relates to the field of plastic particle molding film blowing devices, in particular to a molding film blowing device for heating and melting plastic particles and a use method thereof.

Background

The traditional film blowing device mainly comprises a film blowing cylinder and a die arranged in the film blowing cylinder, wherein a die rod extending to the outside is arranged in the film blowing cylinder, and the die rod is mainly used for accumulating blown formed films and achieving the purposes of lamination and guiding. The mould rod consists of a rod body connected with the blowing mould cylinder and a guide sleeve sleeved outside the rod body. In the use, the film easily appears the condition of knoing when entering the uide bushing to influence the processingquality of film.

The Chinese patent with the authorized bulletin number of CN106827481A discloses a film blowing device, which comprises an organism, a plastic particle throwing hopper arranged on the organism, a plastic particle heating and melting device, a film blowing device, a stretching and arranging device and a winding device, wherein the film blowing device comprises a film blowing cylinder and a mold, a mold rod extending to the outside is arranged in the film blowing cylinder, the mold rod comprises a rod body connected with the film blowing cylinder and a guide sleeve, the rod body is a hollow rod body, an air passage is arranged in the hollow rod body, a plurality of air holes communicated with the air passage in the hollow rod body are formed in the hollow rod body, a through hole which is correspondingly arranged and communicated with the air hole is formed in the lower part of the guide sleeve, and sealing assemblies are arranged between the two axial ends of the guide sleeve and the rod body. The film blowing equipment is used for preventing the film from being adhered to the roll shaft, preventing the film from being damaged, stabilizing the film guiding and improving the processing quality.

However, the above disclosed solution has the following disadvantages: the meaning that the mould pole exists is that improve the rising stability of plastic film, needs to provide certain attached effect for the film, if make uide bushing bottom and film contactless through the air current, the film can't adhere to, has reduced the stability of blown film to a certain extent, in addition, the air current blows the film and causes the irregular shake of film easily, especially under the inhomogeneous circumstances of giving vent to anger, the shake is more obvious, has further reduced the stability of blown film.

Disclosure of Invention

The invention aims at solving the problems in the background technology, and provides a plastic particle heating and melting molding film blowing device which is characterized in that a plastic film is not wound and knotted on a guide sleeve and is stable in film blowing, and a using method thereof.

On one hand, the invention provides a molding film blowing device for heating and melting plastic particles, which comprises a U-shaped support frame and a film blowing mechanism; the film blowing mechanism comprises a supporting plate, a hollow rod, a supporting rod, a guide cone shell, a worm a and a rotating shaft;

the inner wall of the bottom of the U-shaped support frame is provided with a material conveying mechanism, an inner cylinder body and an outer cylinder body are vertically arranged on the material conveying mechanism, the material conveying mechanism is used for inputting plastic particles in a melting state between the inner cylinder body and the outer cylinder body, and the inner wall of the top of the U-shaped support frame is provided with a finishing and winding mechanism;

the support plate is arranged on the inner wall of the vertical section of the U-shaped support frame, the end part of the support plate is vertically provided with a film blowing cylinder, a die is arranged in the film blowing cylinder, and a material conveying channel formed between the inner cylinder body and the outer cylinder body is connected with the die; a cooling mechanism for cooling the plastic film is arranged on the film blowing cylinder; the hollow rod is vertically arranged on the die; the supporting rod is vertically and rotatably arranged on the material conveying mechanism and is positioned in the hollow rod; the guide cone shell is arranged on the peripheral wall of the hollow rod, and the top of the guide cone shell is closed; the worm a is rotationally connected with the inner wall of the top of the guide cone shell, the hollow rod is provided with through holes for the bottom of the worm a to pass through, the worm a is provided with a plurality of groups, and the U-shaped support frame is provided with a power assembly for driving the support rod and the worm a to rotate; the rotation shaft rotates and sets up on the direction cone shell inner wall, is provided with the worm wheel a with worm a meshing in the axis of rotation, sets up the gyro wheel in the axis of rotation, is provided with the bar groove that supplies the gyro wheel to pass on the direction cone shell, and axis of rotation and worm wheel a all set up the multiunit.

Preferably, the material conveying mechanism comprises a material conveying cylinder, a heating ring, a motor a, a material pushing screw and a transition box; the inner wall of the bottom of the U-shaped support frame is sequentially provided with a support block a, a support block b and a support block c from right to left; the feeding cylinder is horizontally arranged on the supporting block a, a feeding pipe is vertically arranged on the feeding cylinder, the left end of the feeding cylinder is communicated with the inner cavity of the transition box, and the right end of the feeding cylinder is closed; the heating ring is arranged on the supporting block b, the heating ring is sleeved on the material conveying cylinder, and the heating ring is positioned between the transition box and the material feeding pipe; the motor a is arranged at the right end of the material conveying cylinder, an output shaft of the motor a is in transmission connection with the material pushing screw rod, and the material pushing screw rod extends into the material conveying cylinder; the transition box sets up on supporting shoe c, and the transition box top sets up multiunit feed chute, and the feed chute is located between interior barrel and the urceolus body.

Preferably, the cooling mechanism comprises an annular air ring, a connecting pipe and a blowing device; the annular air ring is arranged on the film blowing cylinder, and the inner cavity of the annular air ring is communicated with the connecting pipe; the air blower is set on the support board and its air outlet is connected with the connecting pipe.

Preferably, the power assembly comprises a worm wheel b, a worm b, a sleeve and a motor b; the worm wheel b is arranged on the support rod, and the worm wheel b is positioned below the hollow rod; the sleeve horizontally penetrates through the inner cylinder body and the outer cylinder body; the motor b is arranged on the inner wall of the vertical section of the U-shaped support frame, an output shaft of the motor b is in transmission connection with the worm b, the worm b penetrates through the sleeve and stretches into the inner cylinder, and the worm b is meshed with the worm wheel b; the support rod and the worm a are provided with a bevel gear a and a bevel gear b which are meshed with each other.

Preferably, the top of the hollow rod is closed, and the top of the supporting rod is rotationally connected with the inner wall of the top of the hollow rod.

Preferably, a heat insulation layer is arranged on the outer wall of the roller.

Preferably, the plurality of groups of strip-shaped grooves are uniformly distributed along the circumference by taking the axis of the guide cone shell as the center.

On the other hand, the invention provides a using method of a molding film blowing device for heating and melting plastic particles, which comprises the following steps: s1, plastic particles are added into a material conveying cylinder from a material feeding pipe, under the operation of a heating ring and a motor a, the plastic particles are pushed into a transition box in a molten state, and then the plastic in the molten state enters a die through a material conveying channel; s2, molding the molten plastic through a die and then moving the molten plastic upwards; s3, cooling the molded plastic film by the air blowing device through the connecting pipe and the annular air ring; s4, the plastic film moves upwards to contact with the rollers, the motor b works to drive the multiple groups of rollers to synchronously rotate, and the linear speed at the contact position with the plastic film is inclined upwards; s5, the plastic film is tidied and wound by the tidying winding mechanism.

Compared with the prior art, the invention has the following beneficial technical effects: the plastic film is guided into the film blowing mechanism from the material conveying mechanism, moves upwards after being molded by the mold, enters the guide cone shell area after being cooled by the cooling mechanism, and contacts with the rotating multiple groups of rollers, so that the guide stabilizing effect on the plastic film is ensured, the plastic film can be separated from the guide cone shell, the plastic film is prevented from winding and knotting, and the film blowing stability and the molding quality of the plastic film are improved.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention;

FIG. 2 is a front cross-sectional view of FIG. 1;

FIG. 3 is a schematic structural view of a film blowing mechanism

FIG. 4 is an enlarged schematic view of FIG. 3 at A;

fig. 5 is an enlarged schematic view at B in fig. 3.

Reference numerals: 1. a U-shaped supporting frame; 2. a supporting block a; 3. a support block b; 4. a support block c; 5. a feed delivery cylinder; 6. a feed pipe; 7. a heating ring; 8. a motor a; 9. a pushing screw; 10. a transition box; 11. a support plate; 12. a film blowing cylinder; 13. a mold; 14. an inner cylinder; 15. an outer cylinder; 16. a feed chute; 17. an annular wind ring; 18. a connecting pipe; 19. a blower device; 20. a hollow rod; 21. a support rod; 22. a guide cone shell; 23. a worm a; 24. a through hole; 25. bevel gear a; 26. bevel gear b; 27. a rotating shaft; 28. a worm wheel a; 29. a bar-shaped groove; 30. a roller; 31. a worm wheel b; 32. a worm b; 33. a sleeve; 34. a motor b; 35. and (5) arranging a winding mechanism.

Detailed Description

Example 1

The invention provides a molding film blowing device for plastic particle heating and melting, which comprises a U-shaped support frame 1 and a film blowing mechanism; the film blowing mechanism comprises a supporting plate 11, a hollow rod 20, a supporting rod 21, a guide cone shell 22, a worm a23 and a rotating shaft 27;

as shown in fig. 1 and 3, a material conveying mechanism is arranged on the inner wall of the bottom of the U-shaped support frame 1, an inner cylinder 14 and an outer cylinder 15 are vertically arranged on the material conveying mechanism, the material conveying mechanism is used for inputting molten plastic particles between the inner cylinder 14 and the outer cylinder 15, and a finishing and winding mechanism 35 is arranged on the inner wall of the top of the U-shaped support frame 1;

as shown in fig. 2-3, a supporting plate 11 is arranged on the inner wall of the vertical section of the U-shaped supporting frame 1, a film blowing barrel 12 is vertically arranged at the end part of the supporting plate 11, a die 13 is arranged in the film blowing barrel 12, and a material conveying channel formed between an inner barrel 14 and an outer barrel 15 is connected with the die 13; a cooling mechanism for cooling the plastic film is arranged on the film blowing cylinder 12; the hollow rod 20 is vertically arranged on the die 13; the supporting rod 21 is vertically and rotatably arranged on the material conveying mechanism, the supporting rod 21 is positioned in the hollow rod 20, the top of the hollow rod 20 is closed, and the top of the supporting rod 21 is rotatably connected with the inner wall of the top of the hollow rod 20; the guide cone housing 22 is provided on the outer peripheral wall of the hollow rod 20, and the guide cone housing 22 is closed at the top.

As shown in fig. 3-4, a worm a23 is rotatably connected with the inner wall at the top of the guiding cone shell 22, a through hole 24 for the bottom of the worm a23 to pass through is arranged on the hollow rod 20, a plurality of groups of the worm a23 are arranged, and a power assembly for driving the supporting rod 21 and the worm a23 to rotate is arranged on the U-shaped supporting frame 1.

As shown in fig. 5, the rotating shaft 27 is rotatably disposed on the inner wall of the guiding cone shell 22, the worm wheel a28 meshed with the worm a23 is disposed on the rotating shaft 27, the roller 30 is disposed on the rotating shaft 27, the heat insulation layer is disposed on the outer wall of the roller 30, the guiding cone shell 22 is provided with a plurality of groups of strip-shaped grooves 29 for the roller 30 to pass through, the rotating shaft 27 and the worm wheel a28 are both disposed, and the groups of strip-shaped grooves 29 are uniformly distributed along the circumference with the axis of the guiding cone shell 22 as the center.

In this embodiment, the plastic particles are guided into the film blowing mechanism from the material conveying mechanism, the plastic film moves upwards after being molded by the mold 13, and enters the guiding cone shell 22 area after being cooled by the cooling mechanism, and the plastic film contacts with the rotating multiple groups of rollers 30, so that the guiding stabilization effect on the plastic film is ensured, the plastic film can be separated from the guiding cone shell 22, and the plastic film is prevented from winding and knotting, thereby improving the film blowing stability and the molding quality of the plastic film.

Example two

As shown in fig. 1-2, compared with the first embodiment, the plastic particle heating and melting molding film blowing device provided by the invention has a feeding mechanism comprising a feeding cylinder 5, a heating ring 7, a motor a8, a pushing screw 9 and a transition box 10; the inner wall of the bottom of the U-shaped support frame 1 is provided with a support block a2, a support block b3 and a support block c4 in sequence from right to left; the material conveying cylinder 5 is horizontally arranged on the supporting block a2, the material conveying cylinder 5 is vertically provided with a material feeding pipe 6, the left end of the material conveying cylinder 5 is communicated with the inner cavity of the transition box 10, and the right end of the material conveying cylinder 5 is closed; the heating ring 7 is arranged on the supporting block b3, the heating ring 7 is sleeved on the feeding cylinder 5, and the heating ring 7 is positioned between the transition box 10 and the feeding pipe 6; the motor a8 is arranged at the right end of the feeding cylinder 5, an output shaft of the motor a8 is in transmission connection with the pushing screw 9, and the pushing screw 9 extends into the feeding cylinder 5; the transition box 10 is arranged on the supporting block c4, a plurality of groups of feed grooves 16 are arranged at the top of the transition box 10, and the feed grooves 16 are positioned between the inner cylinder 14 and the outer cylinder 15.

In this embodiment, plastic particles are fed into the feeding cylinder 5 from the feeding pipe 6, and under the operation of the heating ring 7 and the motor a8, the plastic particles are pushed into the transition box 10 in a molten state, and then the plastic in the molten state enters the mold 13 through the feeding channel, thereby completing the feeding process.

Example III

As shown in fig. 3, in the molding film blowing device for heating and melting plastic particles according to the present invention, compared with the first embodiment, the cooling mechanism includes an annular air ring 17, a connecting pipe 18 and an air blowing device 19; the annular air ring 17 is arranged on the film blowing barrel 12, and the inner cavity of the annular air ring 17 is communicated with the connecting pipe 18; the blower 19 is disposed on the support plate 11, and an air outlet of the blower 19 is connected to the connection pipe 18. The annular wind ring 17 has good cooling effect on the plastic film.

Example IV

As shown in fig. 3-4, compared with the first embodiment, the power assembly of the molding film blowing device for plastic particle heating and melting and the use method thereof provided by the invention comprises a worm wheel b31, a worm b32, a sleeve 33 and a motor b34; the worm wheel b31 is arranged on the support rod 21, and the worm wheel b31 is positioned below the hollow rod 20; the sleeve 33 passes horizontally through the inner cylinder 14 and the outer cylinder 15; the motor b34 is arranged on the inner wall of the vertical section of the U-shaped support frame 1, an output shaft of the motor b34 is in transmission connection with the worm b32, the worm b32 penetrates through the sleeve 33 and stretches into the inner cylinder 14, and the worm b32 is meshed with the worm wheel b 31; the support rod 21 and the worm a23 are provided with a bevel gear a25 and a bevel gear b26 which are meshed with each other.

In this embodiment, the motor b34 drives the worm b32 to rotate, the worm b32 drives the worm wheel b31 and the supporting rod 21 to rotate, the supporting rod 21 drives the worm a23 to rotate through the bevel gear a25 and the bevel gear b26, and then the roller 30 can be driven to rotate through the worm wheel a28 and the rotating shaft 27.

Example five

Based on the application method of the embodiment of the molding film blowing device for heating and melting plastic particles, the method comprises the following steps:

s1, plastic particles are added into a material conveying cylinder 5 from a material conveying pipe 6, under the operation of a heating ring 7 and a motor a8, the plastic particles are pushed into a transition box 10 in a molten state, and then the plastic in the molten state enters a die 13 through a material conveying channel;

s2, molding the molten plastic through a mold 13 and then moving upwards;

s3, cooling the molded plastic film by the air blowing device 19 through the connecting pipe 18 and the annular air ring 17;

s4, the plastic film moves upwards to contact with the rollers 30, the motor b34 works to drive the multiple groups of rollers 30 to synchronously rotate, and the linear speed at the contact position with the plastic film is inclined upwards;

s5, the plastic film is tidied and wound by the tidying winding mechanism 35.

In this embodiment, the plastic film after film blowing molding contacts with the rotating multiple sets of rollers 30, which not only ensures the contact guiding stabilization effect on the plastic film, but also can separate the plastic film from the guiding cone shell 22 to prevent the plastic film from winding and knotting, thereby improving the film blowing stability and the molding quality of the plastic film.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.

Claims

1. The molding film blowing device for plastic particle heating and melting is characterized by comprising a U-shaped support frame (1) and a film blowing mechanism; the film blowing mechanism comprises a supporting plate (11), a hollow rod (20), a supporting rod (21), a guide cone shell (22), a worm a (23) and a rotating shaft (27);

a material conveying mechanism is arranged on the inner wall of the bottom of the U-shaped support frame (1), an inner cylinder body (14) and an outer cylinder body (15) are vertically arranged on the material conveying mechanism, the material conveying mechanism is used for inputting molten plastic particles between the inner cylinder body (14) and the outer cylinder body (15), and a finishing and winding mechanism (35) is arranged on the inner wall of the top of the U-shaped support frame (1);

the support plate (11) is arranged on the inner wall of the vertical section of the U-shaped support frame (1), the end part of the support plate (11) is vertically provided with a film blowing cylinder (12), a die (13) is arranged in the film blowing cylinder (12), and a material conveying channel formed between the inner cylinder (14) and the outer cylinder (15) is connected with the die (13); a cooling mechanism for cooling the plastic film is arranged on the film blowing cylinder (12); the hollow rod (20) is vertically arranged on the die (13); the supporting rod (21) is vertically and rotatably arranged on the conveying mechanism, and the supporting rod (21) is positioned in the hollow rod (20); the guide cone shell (22) is arranged on the peripheral wall of the hollow rod (20), and the top of the guide cone shell (22) is closed; the worm a (23) is rotationally connected with the inner wall of the top of the guide cone shell (22), a through hole (24) for the bottom of the worm a (23) to pass through is formed in the hollow rod (20), a plurality of groups of the worm a (23) are arranged, and a power assembly for driving the support rod (21) and the worm a (23) to rotate is arranged on the U-shaped support frame (1); the rotating shaft (27) is rotatably arranged on the inner wall of the guide cone shell (22), the worm wheel a (28) meshed with the worm a (23) is arranged on the rotating shaft (27), the roller (30) is arranged on the rotating shaft (27), the guide cone shell (22) is provided with a strip-shaped groove (29) for the roller (30) to pass through, and the rotating shaft (27) and the worm wheel a (28) are both provided with a plurality of groups.

2. The molding film blowing device for plastic particle heating and melting according to claim 1, wherein the feeding mechanism comprises a feeding cylinder (5), a heating ring (7), a motor a (8), a pushing screw (9) and a transition box (10); the inner wall of the bottom of the U-shaped support frame (1) is provided with a support block a (2), a support block b (3) and a support block c (4) in sequence from right to left; the material conveying cylinder (5) is horizontally arranged on the supporting block a (2), the material conveying cylinder (5) is vertically provided with a material feeding pipe (6), the left end of the material conveying cylinder (5) is communicated with the inner cavity of the transition box (10), and the right end of the material conveying cylinder (5) is closed; the heating ring (7) is arranged on the supporting block b (3), the heating ring (7) is sleeved on the feeding cylinder (5), and the heating ring (7) is positioned between the transition box (10) and the feeding pipe (6); the motor a (8) is arranged at the right end of the feeding cylinder (5), an output shaft of the motor a (8) is in transmission connection with the pushing screw rod (9), and the pushing screw rod (9) extends into the feeding cylinder (5); the transition box (10) is arranged on the supporting block c (4), a plurality of groups of feeding grooves (16) are formed in the top of the transition box (10), and the feeding grooves (16) are located between the inner cylinder body (14) and the outer cylinder body (15).

3. The molding film blowing device for plastic particle heating and melting according to claim 1, wherein the cooling mechanism comprises an annular air ring (17), a connecting pipe (18) and an air blowing device (19); the annular air ring (17) is arranged on the film blowing cylinder (12), and the inner cavity of the annular air ring (17) is communicated with the connecting pipe (18); the air blowing device (19) is arranged on the supporting plate (11), and an air outlet of the air blowing device (19) is connected with the connecting pipe (18).

4. The plastic particle heating and melting molding film blowing device according to claim 1, wherein the power assembly comprises a worm wheel b (31), a worm screw b (32), a sleeve (33) and a motor b (34); the worm wheel b (31) is arranged on the supporting rod (21), and the worm wheel b (31) is positioned below the hollow rod (20); the sleeve (33) horizontally passes through the inner cylinder (14) and the outer cylinder (15); the motor b (34) is arranged on the inner wall of the vertical section of the U-shaped support frame (1), an output shaft of the motor b (34) is in transmission connection with the worm b (32), the worm b (32) penetrates through the sleeve (33) to extend into the inner cylinder body (14), and the worm b (32) is meshed with the worm wheel b (31); a bevel gear a (25) and a bevel gear b (26) which are meshed with each other are arranged on the supporting rod (21) and the worm a (23).

5. The plastic particle heating and melting molding film blowing device according to claim 1, wherein the top of the hollow rod (20) is closed, and the top of the supporting rod (21) is rotatably connected with the inner wall of the top of the hollow rod (20).

6. The plastic particle heating and melting molding film blowing device according to claim 1, wherein a heat insulating layer is provided on the outer wall of the roller (30).

7. The molding film blowing device for plastic particle heating and melting according to claim 1, wherein the plurality of groups of the strip-shaped grooves (29) are uniformly distributed circumferentially around the axis of the guide cone shell (22).

8. A method of using the plastic particle heating and melting molding film blowing apparatus as claimed in any one of claims 1 to 7, comprising the steps of:

s1, plastic particles are added into a feed cylinder (5) from a feed pipe (6), under the work of a heating ring (7) and a motor a (8), the plastic particles are pushed into a transition box (10) in a molten state, and then the plastic in the molten state enters a die (13) through a feed channel;

s2, molding the molten plastic through a mold (13) and then moving upwards;

s3, cooling the molded plastic film by the air blowing device (19) through the connecting pipe (18) and the annular air ring (17);

s4, the plastic film moves upwards to be in contact with the rollers (30), the motor b (34) works to drive the plurality of groups of rollers (30) to synchronously rotate, and the linear speed at the contact position with the plastic film is inclined upwards;

s5, finishing and winding the plastic film by a finishing and winding mechanism (35).