Continuous plastic extrusion equipment

Abstract

The invention relates to the technical field of plastic processing equipment, and discloses continuous plastic extrusion equipment which comprises a mold body, a mold core is fixedly mounted in the mold body, a mouth mold is fixedly connected to the bottom of the mold core, an inner core sleeve is fixedly mounted in the mold body, and a first adjusting threaded rod is in threaded connection with the interior of the mold body. The end, close to the mouth mold, of the first adjusting threaded rod is rotationally connected with an adjusting cover, and the interior of the mold body is rotationally connected with a second adjusting threaded rod. According to the continuous plastic extrusion equipment, through application of a unique adjusting structure, a sealing structure, a heating and driving system, an antibacterial coating and a sensor, accurate control and efficient production of the plastic forming process are achieved, and the equipment is particularly suitable for the medicine and cosmetic industry with the high sanitation requirement; the production efficiency and the product quality can be effectively improved, and meanwhile the maintenance cost and the pollution risk are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of plastic processing equipment, in particular to continuous plastic extrusion equipment. Background Art

[0002] Extrusion is a plastic processing technology with a long history, which can be traced back to the end of the 19th century. Initially, extrusion technology was mainly used to produce lead pipes. Later, with the development of thermoplastics, it was gradually applied to the production of plastic products. In the early 20th century, with the diversification of plastic materials and the advancement of processing technology, extrusion technology gradually developed into an efficient and continuous plastic molding method. Today, extrusion technology has become one of the most widely used technologies in the field of plastic processing, and can produce a variety of products such as pipes, plates, films, and profiles.

[0003] In the pharmaceutical and cosmetic industries, the hygiene requirements for equipment are extremely high. Traditional extrusion equipment is prone to breeding bacteria during long-term use. The breeding of bacteria and microorganisms may cause the extruded plastic products to be contaminated. In the pharmaceutical industry, this may cause drug packaging materials or medical devices to carry pathogens on the surface, increasing the risk of cross-infection. Therefore, a continuous plastic extrusion equipment is urgently needed to solve the above problems. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a continuous plastic extrusion device, which solves the problem that traditional extrusion equipment is prone to breeding bacteria during long-term use. The breeding of bacteria and microorganisms may cause the extruded plastic products to be contaminated. In the pharmaceutical industry, this may cause pathogens to be carried on the surface of drug packaging materials or medical devices, increasing the risk of cross infection.

[0006] (II) Technical solution

[0007] The technical solution of the present invention to solve the above technical problems is as follows: a continuous plastic extrusion equipment comprises a die body, a die core is fixedly installed inside the die body, a mouth die is fixedly connected to the bottom of the die core, an inner core sleeve is fixedly installed inside the die body, a first adjusting threaded rod is threadedly connected to the inside of the die body, an adjusting cover is rotatably connected to the end of the first adjusting threaded rod close to the mouth die, a second adjusting threaded rod is rotatably connected to the inside of the die body, a first wedge block is threadedly connected to the outside of the second adjusting threaded rod, a push cover is movably connected to the inside of the inner core sleeve, a second wedge block in contact with the inclined surface of the first wedge block is fixedly connected to the outside of the push cover, a supporting spring is fixedly connected to the outside of the second wedge block, a guide channel is provided between the inner core sleeve and the die core, a feed port connected to the guide channel is provided on the side wall of the die body, a diverter is provided inside the diverter, a diverter is assembled on the outside of the feed port, and an end of the diverter away from the die body is fixedly connected to a barrel.

[0008] The beneficial effects of the present invention are:

[0009] This continuous plastic extrusion equipment achieves precise control of the plastic molding process and efficient production through a unique adjustment structure, sealing structure, heating and drive system, as well as the application of antibacterial coatings and sensors. This equipment is particularly suitable for the pharmaceutical and cosmetic industries with high hygiene requirements. It can effectively improve production efficiency and product quality while reducing maintenance costs and pollution risks.

[0010] Based on the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, a first sealing slider is fixedly connected to the outside of the pusher cover, a first slide groove is provided inside the inner core sleeve, and the first sealing slider is slidably connected to the inside of the first slide groove.

[0012] The beneficial effect of adopting the above further solution is that the first sealing slider ensures that the pusher cover has good sealing performance during the movement, thereby preventing the molten plastic from leaking.

[0013] Furthermore, the first wedge block is externally fixedly connected with a limiting slider, a second slide groove is provided inside the mold body, the limiting slider is slidably connected to the inside of the second slide groove, and the second adjusting threaded rod is externally fixedly connected with a flow rate adjusting bolt cap.

[0014] The beneficial effect of adopting the above further solution is that the limit slider is used to limit the movement range of the first wedge block to ensure the stability of the adjustment.

[0015] Furthermore, the outside of the adjustment cover is fixedly connected to a second sealing slider, the inside of the mold body is provided with a third slide groove, the second sealing slider is slidably connected to the inside of the third slide groove, and the outside of the first adjustment threaded rod is fixedly connected to a wall thickness adjustment bolt cap.

[0016] The beneficial effect of adopting the above further solution is that the second sealing slider further enhances the sealing performance.

[0017] Furthermore, a heater is fixedly installed on the outside of the barrel, and a feed funnel is fixedly connected to the top of the barrel.

[0018] The beneficial effect of adopting the above further solution is that the heater is used to heat the plastic raw material to melt it.

[0019] Furthermore, a servo motor is fixedly mounted on the side wall of the barrel, and a spiral extrusion rod extending into the interior of the barrel is fixedly connected to the output shaft of the servo motor.

[0020] The beneficial effect of adopting the above further solution is that the spiral extruder rod rotates under the drive of the servo motor, pushing the molten plastic forward from the barrel, allowing it to enter the guide channel of the mold body through the diverter and finally be extruded from the die.

[0021] Furthermore, the surfaces of the barrel and the spiral extruder rod are sprayed with antibacterial coatings.

[0022] The beneficial effect of adopting the above further scheme is that this design can effectively inhibit the attachment and reproduction of bacteria on the surface of the barrel and the screw. The antibacterial coating is usually composed of metal ions such as silver ions, copper ions, zinc ions or nanomaterials (such as titanium dioxide) and has broad-spectrum antibacterial properties.

[0023] Furthermore, a temperature sensor is fixedly installed inside the barrel, and a melt pressure sensor is fixedly installed inside the diverter.

[0024] The beneficial effect of adopting the above further scheme is that the temperature sensor is used to monitor the temperature in the barrel in real time to ensure that the plastic melts and flows at a suitable temperature. The temperature sensor should be installed close to the heater to accurately reflect the heating effect. The melt pressure sensor is used to monitor the pressure of the molten plastic in the diverter. The level of melt pressure directly affects the fluidity and molding quality of the plastic. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the present invention;

[0026] Figure 2 It is a side view of the structure of the present invention;

[0027] Figure 3It is a structural schematic diagram of the feed funnel in the present invention;

[0028] Figure 4 It is a cross-sectional view of the structure of the present invention;

[0029] Figure 5 For the present invention Figure 4 A is an enlarged structural diagram;

[0030] Figure 6 For the present invention Figure 4 Enlarged structural diagram at point B.

[0031] In the figure: 1. mold body; 2. mold core; 3. die; 4. inner core sleeve; 5. first adjusting threaded rod; 6. adjusting cover; 7. second adjusting threaded rod; 8. first wedge block; 9. push cover; 10. second wedge block; 11. support spring; 12. first sealing slider; 13. limit slider; 14. flow rate adjustment bolt cap; 15. second sealing slider; 16. wall thickness adjustment bolt cap; 17. feed port; 18. diverter port; 19. diverter; 20. barrel; 21. heater; 22. feed hopper; 23. servo motor; 24. spiral extrusion rod. DETAILED DESCRIPTION

[0032] 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.

[0033] In the embodiment, Figure 1-6 A continuous plastic extrusion device is provided. The present invention comprises a die body 1, a die core 2 is fixedly installed inside the die body 1, a mouth die 3 is fixedly connected to the bottom of the die core 2, an inner core sleeve 4 is fixedly installed inside the die body 1, a guide channel is provided between the inner core sleeve 4 and the die core 2, a feed port 17 connected to the guide channel is provided on the side wall of the die body 1, a diversion port 18 is provided inside the guide channel, a diverter 19 is assembled outside the feed port 17, an end of the diverter 19 away from the die body 1 is fixedly connected to a barrel 20, a heater 21 is fixedly installed outside the barrel 20, a feed funnel 22 is fixedly connected to the top of the barrel 20, and the heater 21 is used to heat the plastic raw material to melt it.

[0034] A servo motor 23 is fixedly mounted on the side wall of the barrel 20, and a spiral extrusion rod 24 extending into the interior of the barrel 20 is fixedly connected to the output shaft of the servo motor 23. The spiral extrusion rod 24 rotates under the drive of the servo motor 23, pushing the molten plastic forward from the barrel 20, allowing it to pass through the diverter 19 into the guide channel of the mold body 1, and finally extruded from the die 3 to form.

[0035] The surfaces of the barrel 20 and the screw extruder 24 are sprayed with an antibacterial coating. This design can effectively inhibit the attachment and reproduction of bacteria on the barrel and screw surfaces. The antibacterial coating is usually composed of metal ions such as silver ions, copper ions, zinc ions, or nanomaterials such as titanium dioxide, and has broad-spectrum antibacterial properties.

[0036] A temperature sensor is fixedly installed inside the barrel 20, and a melt pressure sensor is fixedly installed inside the diverter 19. The temperature sensor is used to monitor the temperature inside the barrel in real time to ensure that the plastic melts and flows at a suitable temperature. The installation position of the temperature sensor should be close to the heater 21 to accurately reflect the heating effect. The melt pressure sensor is used to monitor the pressure of the molten plastic in the diverter. The level of melt pressure directly affects the fluidity and molding quality of the plastic. What is needed is that the number of temperature sensors is several. The temperature sensor is also installed on the mold body 1, and its temperature sensing component is inserted into the guide channel to ensure that it can contact the molten plastic to monitor the temperature of the plastic when it enters the mold body 1. The temperature sensor will also be installed on the outside of the die 3 to monitor the temperature of the molded plastic.

[0037] Specific references Figure 5 The internal thread of the mold body 1 is connected to the first adjusting threaded rod 5, and the end of the first adjusting threaded rod 5 close to the die 3 is rotatably connected to the adjusting cover 6, and the outside of the adjusting cover 6 is fixedly connected to the second sealing slider 15. A third slide groove is opened inside the mold body 1, and the second sealing slider 15 is slidably connected to the inside of the third slide groove. The outside of the first adjusting threaded rod 5 is fixedly connected to the wall thickness adjusting bolt cap 16, and the second sealing slider 15 enhances the sealing performance.

[0038] During use of this embodiment, there are several adjusting covers 6. The wall thickness adjusting bolt cap 16 is rotated to drive the first adjusting threaded rod 5 to rotate, so that the adjusting cover 6 moves closer to or away from the die 3, thereby controlling the gap between the adjusting cover 6 and the die 3, and further controlling the thickness of the tube embryo in all directions.

[0039] Specific references Figure 6The inside of the mold body 1 is rotatably connected with the second adjusting threaded rod 7, the external thread of the second adjusting threaded rod 7 is connected with the first wedge block 8, the inside of the inner core sleeve 4 is movably connected with the push cover 9, the outside of the push cover 9 is fixedly connected with the second wedge block 10 in contact with the inclined surface of the first wedge block 8, the outside of the second wedge block 10 is fixedly connected with the support spring 11, the outside of the push cover 9 is fixedly connected with the first sealing slider 12, the inside of the inner core sleeve 4 is provided with a first slide groove, the first sealing slider 12 is slidably connected to the inside of the first slide groove, and the first sealing slider 12 ensures that the push cover 9 has good sealing during movement to prevent leakage of molten plastic.

[0040] During use of this embodiment, the outside of the first wedge block 8 is fixedly connected with a limiting slider 13, a second slide groove is opened inside the mold body 1, the limiting slider 13 is slidably connected to the inside of the second slide groove, and the outside of the second adjusting threaded rod 7 is fixedly connected with a flow rate adjusting bolt cap 14. The limiting slider 13 is used to limit the movement range of the first wedge block 8. The second adjusting threaded rod 7 is driven to rotate by rotating the flow rate adjusting bolt cap 14, so that the first wedge block 8 squeezes and pushes the second wedge block 10, thereby moving the push cover 9 to adjust the gap formed between it and the mold core 2, thereby controlling the flow rate of the molten plastic.

[0041] Working principle:

[0042] The plastic raw material enters the interior of the barrel 20 through the feed hopper 22, and the spiral extruder rod 24 rotates under the drive of the servo motor 23 to push the molten plastic forward from the barrel 20. The heater 21 is used to heat the plastic raw material to melt it and enter the guide channel of the mold body 1 through the diverter 19. The second adjusting threaded rod 7 is driven to rotate by rotating the flow rate adjusting bolt cap 14 to adjust the gap formed by the push cover 9 and the mold core 2, thereby controlling the flow rate of the molten plastic. The first adjusting threaded rod 5 is driven to rotate by rotating the wall thickness adjusting bolt cap 16 to control the gap between the adjusting cover 6 and the die 3, thereby controlling the thickness of the tube embryo in all directions, and finally extruding it from the die 3. This extrusion system is mainly used in the pharmaceutical and cosmetic industries, because the tube embryo extruded by this system is continuously formed and can be completely isolated from the air to prevent bacterial contamination. Therefore, it is particularly widely used in the pharmaceutical industry and also has broad prospects.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0044] 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. A continuous plastic extrusion device, comprising a die body (1), characterized in that: A mold core (2) is fixedly installed inside the mold body (1), a mouth mold (3) is fixedly connected to the bottom of the mold core (2), an inner core sleeve (4) is fixedly installed inside the mold body (1), a first adjusting threaded rod (5) is threadedly connected inside the mold body (1), an adjusting cover (6) is rotatably connected to one end of the first adjusting threaded rod (5) close to the mouth mold (3), a second adjusting threaded rod (7) is rotatably connected inside the mold body (1), a first wedge block (8) is threadedly connected to the outside of the second adjusting threaded rod (7), and a pusher cover (9) is movably connected inside the inner core sleeve (4). ), the push cover (9) is externally fixedly connected to a second wedge block (10) in contact with the inclined surface of the first wedge block (8), the second wedge block (10) is externally fixedly connected to a support spring (11), a guide channel is provided between the inner core sleeve (4) and the mold core (2), a feed port (17) connected to the guide channel is provided on the side wall of the mold body (1), a diversion port (18) is provided inside the diversion channel, a diverter (19) is externally assembled on the feed port (17), and the diverter (19) is fixedly connected to a barrel (20) at one end away from the mold body (1).

2. A continuous plastic extrusion device according to claim 1, characterized in that: The outside of the pusher cover (9) is fixedly connected to a first sealing slider (12), the inside of the inner core sleeve (4) is provided with a first sliding groove, and the first sealing slider (12) is slidably connected to the inside of the first sliding groove.

3. A continuous plastic extrusion device according to claim 1, characterized in that: The first wedge block (8) is externally fixedly connected to a limit slider (13), the mold body (1) is internally provided with a second slide groove, the limit slider (13) is slidably connected to the interior of the second slide groove, and the second adjusting threaded rod (7) is externally fixedly connected to a flow rate adjusting bolt cap (14).

4. A continuous plastic extrusion device according to claim 1, characterized in that: The outside of the adjustment cover (6) is fixedly connected to a second sealing slider (15), the inside of the mold body (1) is provided with a third slide groove, the second sealing slider (15) is slidably connected to the inside of the third slide groove, and the outside of the first adjustment threaded rod (5) is fixedly connected to a wall thickness adjustment bolt cap (16).

5. The continuous plastic extrusion equipment according to claim 1, characterized in that: A heater (21) is fixedly installed on the outside of the barrel (20), and a feed hopper (22) is fixedly connected to the top of the barrel (20).

6. A continuous plastic extrusion device according to claim 1, characterized in that: A servo motor (23) is fixedly mounted on the side wall of the barrel (20), and a spiral extrusion rod (24) extending into the interior of the barrel (20) is fixedly connected to the output shaft of the servo motor (23).

7. A continuous plastic extrusion device according to claim 6, characterized in that: The surfaces of the barrel (20) and the spiral extruder rod (24) are sprayed with an antibacterial coating.

8. The continuous plastic extrusion equipment according to claim 1, characterized in that: A temperature sensor is fixedly installed inside the barrel (20), and a melt pressure sensor is fixedly installed inside the diverter (19).

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