Integrated temperature and pressure adjusting system for co-extrusion film blowing die

Abstract

The invention relates to the technical field of temperature and pressure adjusting systems, and provides an integrated temperature and pressure adjusting system for a co-extrusion film blowing die, the temperature of materials in each material guiding channel can be independently adjusted so as to meet the process requirements of different products, the adjustment of the pressure of the materials in each material guiding channel is richer, the adjustment range is wider, and the production efficiency is improved. The device comprises a feeding distributor and further comprises a plurality of pressure adjusting assemblies, the feeding distributor comprises a prism frame, a plurality of material guiding channels are formed in the prism frame, mounting grooves are formed in a plurality of prism faces of the prism frame and communicate with the material guiding channels correspondingly, resistance heating wires are arranged in the mounting grooves correspondingly, and the resistance heating wires are connected with the pressure adjusting assemblies. The multiple pressure adjusting assemblies each comprise an outer hanging frame, the multiple outer hanging frames are connected with the prism frame, filling pipe frames are fixedly connected to the multiple outer hanging frames, the multiple filling pipe frames stretch into the multiple mounting grooves correspondingly, mounting cavities are formed in the multiple outer hanging frames, and driving wheels and driven wheels are rotationally connected into the multiple mounting cavities.

Description

Technical Field

[0001] The invention relates to the technical field of temperature and pressure regulating systems, and in particular to an integrated co-extrusion film blowing die temperature and pressure regulating system. Background Art

[0002] As we all know, the integrated co-extrusion blown film mold temperature and pressure regulation system is an auxiliary device that adjusts the feed temperature and pressure of the feed branch channel during the injection molding process of the blown film mold to meet the process requirements of the product.

[0003] After searching, a Chinese patent with publication number CN114889110A published on August 12, 2022 discloses a co-extrusion blown film mold, which is roughly described as including a mold body, a mold distributor and a plurality of feed distributors, the feed distributor is arranged on the side of the mold distributor, and is provided with a feed main channel and a feed branch channel, the feed main channel is connected to each feed branch channel respectively, and a plurality of layers of mold spirals are arranged on the mold distributor, the feed branch channels correspond to the mold spirals one by one, and the feed branch channels are connected to the mold body through the mold spirals, and a plurality of regulating valve mounting parts are arranged on the feed distributor, and regulating valves are installed on the regulating valve mounting parts, and the regulating valves are connected to the feed branch channels. One-to-one correspondence, one end of the regulating valve is movably inserted into the feed diverter channel to adjust the pressure and flow rate of the feed diverter channel. When in use, a feed distributor is set on the outside of the mold distributor, and the feed distributor feeds the material through the main feed channel, and then diverts the material through the feed diverter channel. The diverted materials enter the corresponding mold spirals respectively, and finally enter the mold body. The feed temperature and pressure of each feed diverter channel (or each layer of the mold spiral) can be adjusted separately, so that the layer thickness ratio of each layer of the film can be flexibly adjusted, which can better meet the process requirements of the product and improve product quality. One feed channel corresponds to one feed screw, which can reduce the number of feed screws of the mold and reduce the mold cost.

[0004] Although the above-mentioned prior art solution sets up multiple feed distributors and is equipped with pressure sensors, and although it can realize pressure detection of multiple feed distributors and realize regulation of feed amount in multiple feed branch channels through regulating valves, the regulating valve only realizes adjustment of the passing space of the feed branch channels, and has limited ability to regulate the pressure of materials entering the feed branch channels. At the same time, it is also not easy to realize temperature regulation of materials in each feed branch channel according to different specific circumstances, and its practicality needs to be further enhanced. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the shortcomings of the prior art, the present invention provides an integrated co-extrusion blown film mold temperature and pressure regulation system, in which the material temperature in each feed channel can be adjusted independently to meet the process requirements of different products, and the material pressure in each feed channel can be more easily regulated, with a wider regulation range and better practicality.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an integrated co-extrusion blown film mold temperature and pressure regulating system, including a feed distributor, and also including a plurality of pressure regulating components, the feed distributor includes a prism frame, a plurality of feed introduction channels are arranged in the prism frame, a plurality of edge surfaces of the prism frame are provided with mounting grooves, a plurality of the mounting grooves are respectively connected to a plurality of feed introduction channels, a plurality of the mounting grooves are provided with resistance heating wires, a plurality of the pressure regulating components include external hangers, a plurality of the external hangers are connected to the prism frame, a plurality of the external hangers are fixedly connected to a filling pipe rack, a plurality of the filling pipe racks are divided into The plurality of external racks are respectively provided with mounting cavities, the plurality of mounting cavities are rotatably connected with driving wheels and driven wheels, the plurality of driving wheels are transmission-connected with transmission belts, the plurality of transmission belts are transmission-connected with the driven wheels, the plurality of transmission belts are fixedly connected with a plurality of closed pressure plates, the plurality of filling tube racks are provided with sealing cavities matching the closed pressure plates, the plurality of filling tube racks are installed with servo motors, the plurality of servo motors are respectively used for rotational driving of the plurality of driving wheels, the right end of the prism rack is connected with a main feed pipe, and the left end of the prism rack is connected with a material distribution combination pipe.

[0009] On the basis of the above-mentioned scheme, the material distribution combination pipe includes a material distribution flange and multiple mounting flanges, multiple mounting flanges are provided with mounting holes, multiple mounting holes are fixedly connected with material distribution pipes, multiple material distribution pipes are connected to the material distribution flange, the material distribution flange is fixedly connected to the prism frame, and multiple material distribution pipes are respectively connected to multiple material guide channels.

[0010] On the basis of the above scheme, a guide annular island is arranged in the main feed pipe, and a plurality of diversion holes are arranged on the guide annular island, and the plurality of diversion holes are respectively connected with the plurality of feed introduction channels.

[0011] On the basis of the above scheme, a plurality of the external brackets are fixedly connected with a clamping ring, a plurality of the clamping rings are provided with a plurality of circular holes, a plurality of the circular holes are provided with mounting bolts, and a plurality of the mounting bolts are threadedly connected with the prism frame.

[0012] On the basis of the above-mentioned scheme, a transmission box is fixedly connected to each of the multiple external racks, a drive pulley is rotatably connected inside each of the multiple transmission boxes, the multiple drive pulleys are respectively connected to the multiple drive wheels, the multiple servo motors are respectively installed on the multiple transmission boxes, and a power pulley is installed on the output shaft of each of the multiple servo motors, and the multiple power pulleys are transmission-connected to the multiple drive pulleys.

[0013] On the basis of the above-mentioned solution, a plurality of the transmission boxes are provided with maintenance openings, and a sealing cover is slidably fitted in the plurality of the maintenance openings.

[0014] Based on the above scheme, multiple transmission boxes are provided with threaded grooves, multiple threaded grooves are threadedly connected with clamping bolts, multiple sealing covers are provided with insertion holes, and multiple clamping bolts are respectively located in the multiple insertion holes.

[0015] On the basis of the above scheme, a plurality of the resistance heating wires are provided with passing areas, the plurality of the passing areas are matched with a plurality of the filling tube racks respectively, and a plurality of the filling tube racks are provided with notches matching the resistance heating wires.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the present invention provides an integrated co-extrusion film blowing die temperature and pressure regulating system, which has the following beneficial effects:

[0018] 1. In the present invention, a plurality of feed channel structures are formed through the design of the feed distributor, and the material temperature in each feed channel can be adjusted independently to meet the process requirements of different products and facilitate the subsequent matching installation of multiple pressure regulating components.

[0019] 2. In the present invention, through the design of the pressure regulating component, the matching feed channel is used to achieve pressure adjustment of the material in the feed channel, the adjustment of the material pressure in each feed channel is richer, the adjustment range is wider, and the practicality is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of a partially cutaway three-dimensional structure of the present invention;

[0021] Figure 2 For the present invention Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0022] Figure 3 For the present invention Figure 1 A schematic diagram of the local enlarged structure at B in the middle;

[0023] Figure 4It is a schematic diagram of the exploded three-dimensional structure of the external rack, the filling pipe rack and the transmission box of the present invention;

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the transmission box, the driving pulley and the clamping bolts of the present invention;

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the prism frame and the resistance heating wire of the present invention;

[0026] Figure 7 It is a partially cutaway three-dimensional structural schematic diagram of the cooperation of the external rack, the main feed pipe and the guide annular island of the present invention;

[0027] Figure 8 For the present invention Figure 7 Schematic diagram of the local enlarged structure at point C in the middle.

[0028] In the figure: 1. Prism frame; 2. Feed channel; 3. Mounting groove; 4. Resistance heating wire; 5. External rack; 6. Filling pipe rack; 7. Mounting cavity; 8. Driving wheel; 9. Driven wheel; 10. Transmission belt; 11. Closed pressure plate; 12. Sealing cavity; 13. Servo motor; 14. Feeding pipe; 15. Feeding flange; 16. Mounting flange; 17. Mounting hole; 18. Main feed pipe; 19. Guide annular island; 20. Diverter hole; 21. Clamping ring; 22. Mounting bolt; 23. Transmission box; 24. Driving pulley; 25. Power pulley; 26. Maintenance port; 27. Sealing cover; 28. Clamping bolt; 29. ​​Notch. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Example

[0031] Please see attached Figure 1 -Attached Figure 8The integrated co-extrusion blown film mold temperature and pressure regulating system includes a feed distributor and a plurality of pressure regulating components. The feed distributor includes a prism frame 1, and a plurality of feed channels 2 are arranged in the prism frame 1. Installation grooves 3 are provided on the plurality of prism faces of the prism frame 1. The plurality of installation grooves 3 are respectively connected with the plurality of feed channels 2. Resistance heating wires 4 are provided in the plurality of installation grooves 3. Through the design of the feed distributor, a plurality of feed channels 2 structures are formed. The material temperature in each feed channel 2 can be adjusted independently to meet the process requirements of different products and facilitate the subsequent supporting installation of a plurality of pressure regulating components. The plurality of pressure regulating components include an external hanger 5, and the plurality of external hangers 5 are connected to the prism frame 1. The plurality of external hangers 5 are fixedly connected with a clamping ring 21, and the plurality of clamping rings 21 are provided with a plurality of circular holes, and the plurality of circular holes are provided with mounting bolts 22. 22 are all threadedly connected to the prism frame 1, and filling pipe racks 6 are fixedly connected to multiple external racks 5, and multiple filling pipe racks 6 extend into multiple installation grooves 3 respectively. Installation cavities 7 are provided in multiple external racks 5, and driving wheels 8 and driven wheels 9 are rotatably connected in multiple installation cavities 7. Multiple driving wheels 8 are transmission-connected with transmission belts 10, and multiple transmission belts 10 are transmission-connected with driven wheels 9. Multiple transmission belts 10 are fixedly connected with multiple closed pressure plates 11, and multiple filling pipe racks 6 are provided with sealing cavities 12 matching the closed pressure plates 11. Servo motors 13 are installed on multiple filling pipe racks 6, and multiple servo motors 13 are respectively used for driving the rotation of multiple driving wheels 8. Through the design of the pressure regulating component, the matching feed channel 2 realizes the pressure adjustment of the material in the feed channel 2, and the adjustment of the material pressure in each feed channel 2 is richer, the adjustment range is wider, and the practicality is better.

[0032] It should be further explained that the right end of the prism frame 1 is connected to the main feed pipe 18, and a guide annular island 19 is arranged in the main feed pipe 18. A plurality of diversion holes 20 are arranged on the guide annular island 19, and the plurality of diversion holes 20 are respectively connected to the plurality of feed channels 2, so as to facilitate the guiding and diversion of the materials entering from the main feed pipe 18 into the plurality of feed channels 2. The left end of the prism frame 1 is connected to a distribution assembly pipe, and the distribution assembly pipe includes a distribution flange 15 and a plurality of mounting flanges 16. The plurality of mounting flanges 16 are provided with mounting holes 17, and the plurality of mounting holes 17 are fixedly connected with distribution pipes 14, and the plurality of distribution pipes 14 are connected with the distribution flange 15, and the distribution flange 15 is fixedly connected with the prism frame 1, and the plurality of distribution pipes 14 are respectively connected with the plurality of feed channels 2, so as to facilitate the connection and installation of the plurality of feed channels 2 with the plurality of molds, and the plurality of external racks 5 are fixedly connected with transmission boxes 23, and the plurality of transmission boxes 23 are rotatably connected with drive belts. Wheel 24, multiple driving pulleys 24 are respectively connected to multiple driving wheels 8, multiple servo motors 13 are respectively installed on multiple transmission boxes 23, and power pulleys 25 are installed on the output shafts of multiple servo motors 13, and multiple power pulleys 25 are transmission-connected with multiple driving pulleys 24, multiple transmission boxes 23 are provided with maintenance ports 26, and multiple maintenance ports 26 are slidably matched with sealing covers 27 to improve the protection of transmission between the servo motors 13 and the driving wheels 8, multiple transmission boxes 23 are provided with threaded grooves, and multiple threaded grooves are threadedly connected with clamping bolts 28, multiple sealing covers 27 are provided with insertion holes, and multiple clamping bolts 28 are respectively located in the multiple insertion holes to realize the structural positioning of the sealing cover 27 relative to the transmission box 23, and multiple resistance heating wires 4 are provided with passing areas, and the multiple passing areas are respectively matched with multiple filling pipe racks 6, and multiple filling pipe racks 6 are provided with notches 29 matching the resistance heating wires 4.

[0033] The servo motor 13 in this embodiment is a conventional device purchased on the market and known to those skilled in the art. In this patent, we only use it and do not improve its structure and function. For those skilled in the art, its setting method, installation method and electrical connection method only need to be debugged according to the requirements of its instruction manual, and will not be described in detail here. The servo motor 13 is provided with a control switch matched therewith. The installation position of the control switch is selected according to actual use requirements to facilitate the operator to operate and control.

[0034] In summary, the working principle and working process of the integrated co-extrusion blown film mold temperature and pressure regulating system are as follows: when in use, first install the integrated co-extrusion blown film mold temperature and pressure regulating system at the desired location, and install a plurality of servo motors 13 and a plurality of control circuits of resistance heating wires 4, and at the same time connect the main feed pipe 18 with the external extruder and install it, connect a plurality of mounting flanges 16 with the corresponding injection molds and install them, and the material output from the external extruder enters the plurality of feed channels 2 through the main feed pipe 18, and adjusts the heating temperature of the plurality of resistance heating wires 4 according to the temperature requirements of the material to realize the control of different temperatures of the material in the corresponding feed channels 2, and controls the operation of the plurality of servo motors 13 according to the requirements to realize the plurality of To adjust the pressure of the material in the feed channel 2, multiple servo motors 13 work to realize the movement drive of multiple transmission belts 10 respectively, and the transmission belts 10 work to realize the movement drive of multiple closed pressure plates 11 thereon. The moving closed pressure plates 11 will make the materials entering the feed channel 2 form an auxiliary toggle drive, so as to achieve the corresponding adjustment of the different pressure requirements of the materials in different feed channels 2, and in order to achieve an intuitive understanding of the material status of multiple feed channels 2, matching pressure sensors and temperature sensors can be installed in multiple feed channels 2. The feed channel 2 is a through hole structure that penetrates the prism frame 1. According to the directionality of the pushing effect of the multiple closed pressure plates 11 on the material, the pressure sensor should be installed at the position of the through hole of the feed channel 2 near the right port.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An integrated co-extrusion blown film die temperature and pressure regulating system, including a feed distributor, characterized in that: It also includes a plurality of pressure regulating components, wherein the feed distributor includes a prism frame (1), a plurality of feed introduction channels (2) are arranged in the prism frame (1), a plurality of prism faces of the prism frame (1) are provided with mounting grooves (3), a plurality of the mounting grooves (3) are respectively connected to the plurality of feed introduction channels (2), a plurality of the mounting grooves (3) are respectively provided with resistance heating wires (4), a plurality of the pressure regulating components include external hangers (5), a plurality of the external hangers (5) are respectively connected to the prism frame (1), a plurality of the external hangers (5) are fixedly connected with filling pipe racks (6), a plurality of the filling pipe racks (6) are respectively extended into a plurality of mounting grooves (3), a plurality of the external hangers (5) are respectively provided with mounting cavities (7), a plurality of the mounting A driving wheel (8) and a driven wheel (9) are rotatably connected in the filling cavity (7); a plurality of the driving wheels (8) are transmission-connected with a transmission belt (10); a plurality of the transmission belts (10) are transmission-connected with the driven wheel (9); a plurality of closed pressure plates (11) are fixedly connected to the plurality of transmission belts (10); a plurality of filling tube racks (6) are provided with a sealing cavity (12) matching the closed pressure plate (11); a plurality of filling tube racks (6) are installed with a servo motor (13); a plurality of the servo motors (13) are respectively used for rotationally driving a plurality of driving wheels (8); a main feed pipe (18) is connected to the right end of the prism rack (1); and a material distribution combination pipe is connected to the left end of the prism rack (1).

2. The integrated co-extrusion blown film mold temperature and pressure regulating system according to claim 1, characterized in that: The material distribution combined pipe comprises a material distribution flange (15) and a plurality of mounting flanges (16); the plurality of mounting flanges (16) are each provided with a mounting hole (17); the plurality of mounting holes (17) are each fixedly connected with a material distribution pipe (14); the plurality of material distribution pipes (14) are each connected to the material distribution flange (15); the material distribution flange (15) is fixedly connected to the prism frame (1); and the plurality of material distribution pipes (14) are respectively connected to a plurality of material introduction channels (2).

3. The integrated co-extrusion blown film mold temperature and pressure regulating system according to claim 2 is characterized in that: A guide annular island (19) is arranged in the main feed pipe (18), and a plurality of diversion holes (20) are arranged on the guide annular island (19). The plurality of diversion holes (20) are respectively connected to the plurality of feed introduction channels (2).

4. The integrated co-extrusion blown film mold temperature and pressure regulating system according to claim 3 is characterized in that: A plurality of the external mounting frames (5) are fixedly connected with a clamping ring (21), a plurality of the clamping rings (21) are provided with a plurality of circular holes, a plurality of the circular holes are provided with mounting bolts (22), and a plurality of the mounting bolts (22) are threadedly connected with the prism frame (1).

5. The integrated co-extrusion film blowing mold temperature and pressure regulating system according to claim 4, characterized in that: A transmission box (23) is fixedly connected to each of the plurality of external racks (5), a driving pulley (24) is rotatably connected to each of the plurality of transmission boxes (23), the driving pulleys (24) are respectively connected to the plurality of driving wheels (8), the servo motors (13) are respectively mounted on the plurality of transmission boxes (23), and a power pulley (25) is mounted on the output shaft of each of the plurality of servo motors (13), and the power pulleys (25) are respectively connected to the plurality of driving pulleys (24) in a transmission manner.

6. The integrated co-extrusion blown film mold temperature and pressure regulating system according to claim 5, characterized in that: A maintenance opening (26) is provided on each of the plurality of transmission boxes (23), and a sealing cover (27) is slidably fitted inside each of the plurality of maintenance openings (26).

7. The integrated co-extrusion blown film mold temperature and pressure regulating system according to claim 6, characterized in that: A plurality of the transmission boxes (23) are provided with threaded grooves, and clamping bolts (28) are threadedly connected in the plurality of the threaded grooves. An insertion hole is provided in the plurality of the sealing covers (27), and the plurality of the clamping bolts (28) are respectively located in the plurality of the insertion holes.

8. The integrated co-extrusion blown film mold temperature and pressure regulating system according to claim 7, characterized in that: A plurality of the resistance heating wires (4) are each provided with a passing area, and the plurality of the passing areas are respectively matched with the plurality of the filling tube racks (6), and the plurality of the filling tube racks (6) are each provided with a notch (29) that matches the resistance heating wire (4).

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