A physical foaming machine three-layer co-extrusion machine head convenient to disassemble for production of teflon

Abstract

The application relates to the field of co-extrusion heads, and provides a three-layer co-extrusion head of a physical foaming machine for Teflon production which is convenient to disassemble, comprising a head main body, three co-extrusion mechanisms arranged on the head main body, a joint and a material channel arranged on the head main body, the joint being connected to the head main body, the joint and the material channel being communicated, a discharge groove being arranged on the head main body, the material channel and the discharge groove being communicated, characterized in that a switching device, a cooling pipe and a vibrator are connected to the head main body, the switching device is connected to the cooling pipe, the cooling pipe is connected with a cooling water circulating device, a rotating cover is movably connected to the head main body, a driving mechanism is arranged on the head main body, and the switching device extends to the inner wall of one of the material channels. The cooling water of the cooling pipe can directly enter the cleaning state, an additional flushing device is not needed, manual operation steps are reduced, the cleaning efficiency is improved, the vibrator continuously vibrates the head main body, and the cleaning quality is improved.

Description

Technical Field

[0001] This invention relates to the field of co-extrusion die head technology, and more specifically to a three-layer co-extrusion die head for a physical foaming machine used in Teflon production that is easy to disassemble. Background Technology

[0002] The co-extrusion die head of a physical foaming machine needs to be cleaned and maintained regularly. The traditional method is to disassemble the co-extrusion die head and the entire physical foaming machine, and also disassemble the cooling pipes. Then, additional cleaning tools such as water pipes are used to rinse and clean the material channel of the co-extrusion die head. The process is cumbersome and reduces cleaning efficiency. Moreover, cleaning by rinsing alone is not effective in removing some stubborn deposits, and the cleaning effect needs to be improved. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention aims to provide a three-layer co-extrusion die head for a physical foaming machine used in Teflon production that is easy to disassemble. To solve these problems, this invention employs the following technical solution:

[0004] A three-layer co-extrusion die head for a physical foaming machine used in Teflon production that is easy to disassemble includes a die head body with three co-extrusion mechanisms on the die head body. Each co-extrusion mechanism includes a connector and a material channel opened on the die head body. The connector is connected to the die head body and communicates with the material channel. A discharge chute is opened on the die head body and communicates with the material channel. The die head body is characterized by having a switching device, a cooling pipe, and a vibrator connected to it. The switching device is connected to the cooling pipe, which is externally connected to a cooling water circulation device. A rotating cover is movably connected to the die head body. The die head body is equipped with a drive mechanism, and the switching device extends to the inner wall of one of the material channels.

[0005] Optionally, the drive mechanism includes a rack and a rotating rod. The rack is slidably connected to one of the joints and extends into the interior of the machine head body. The rack is connected to the inner wall of the machine head body through an elastic element. The rotating rod is rotatably connected to the inner wall of the machine head body and a gear is fixedly connected to the rotating rod. The gear meshes with the rack.

[0006] The switching device has a transmission cavity, a curved cavity, and a connecting channel. The curved cavity and the connecting channel are connected. A ball is rotatably connected to the inner wall of the curved cavity. The ball has a ball hole and extends into one of the material channels. The ball and the rotating rod are fixedly connected. A T-shaped baffle is slidably connected to the inner wall of the transmission cavity. The T-shaped baffle is connected to the inner wall of the transmission cavity through an elastic element and extends into the inner wall of the connecting channel. A top piece is fixedly connected to the rotating rod and is located inside the transmission cavity.

[0007] Optionally, a transmission is fixedly connected to the main body of the machine head, the input shaft of the transmission is fixedly connected to the rotating rod, and the output shaft of the transmission is fixedly connected to the rotating cover.

[0008] Optionally, a second gearbox is fixedly connected to the inner wall of the machine head body, the input shaft of the second gearbox is fixedly connected to the rotating rod, and a threaded rod is fixedly connected to the output shaft of the second gearbox, the threaded rod being rotatably connected to the inner wall of the machine head body;

[0009] The vibrator is slidably connected to the inner wall of the machine head body. A threaded hole is opened on the vibrator, and a threaded rod is threadedly connected to the inner wall of the threaded hole. An impact frame is slidably connected to the inner wall of the vibrator. The impact frame is connected to the inner wall of the vibrator through an elastic element. A movable disc is rotatably connected to the impact frame through a rotating shaft.

[0010] Optionally, the vertical section of the T-shaped baffle is provided with an elastic buffer section.

[0011] Optionally, a heat-conducting element is embedded between adjacent material channels.

[0012] Optionally, the distance between the leftmost end of the movable disk and the rotating shaft is greater than the distance between the rightmost end of the movable disk and the rotating shaft.

[0013] Optionally, the cooling water circulation device includes a water tank and a water pump.

[0014] Optionally, the connector is provided with a convenient connection part.

[0015] Optionally, the convenient connection part is a flange.

[0016] The present invention has the following beneficial effects:

[0017] The system can directly enter the cleaning state using the cooling water from the cooling pipes, without the need for additional preparation or external rinsing equipment, significantly reducing manual operation steps and improving maintenance and cleaning efficiency.

[0018] In addition, to address the problem of stubborn deposits being difficult to remove with water flow and easily causing blockages, the linkage of the rack and pinion mechanism can also cause the vibrator to generate continuous non-electric vibration on the main body of the machine head. This vibration can effectively loosen and remove deposits from the inner wall of the material channel, and, together with the cooling water, flush away the blockages, significantly improving the cleaning quality and anti-blocking effect. Attached Figure Description

[0019] The present invention will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a three-layer co-extrusion die head for a physical foaming machine used in Teflon production that is easy to disassemble according to the present invention;

[0021] Figure 2 This is the present invention. Figure 1 Schematic diagram of the internal structure of the main body of the mid-section;

[0022] Figure 3 This is the present invention. Figure 1 Internal structure diagram of the switching device;

[0023] Figure 4 This is a schematic diagram of the structure of the cover and the first transmission in this invention;

[0024] Figure 5 This is the present invention. Figure 1 Schematic diagram of the internal structure of the medium vibrator;

[0025] Figure 6 This is the present invention. Figure 5 A schematic diagram of the structure of the vibrator after omitting the elastic element, the movable disc, and the impact frame;

[0026] Figure 7 This is a schematic diagram of the structure of the movable disk in this invention.

[0027] Reference numerals: 1. Head body; 3. Connector; 4. Rack; 5. Elastic element one; 6. Rotating rod; 7. Gear; 8. Switching device; 9. Cooling pipe; 10. Transmission cavity; 11. Ball block; 12. Ball hole; 13. Top piece; 14. T-shaped baffle; 15. Elastic element two; 16. Curved cavity; 17. Connecting channel; 18. Discharge chute; 19. Rotary cover; 20. Gearbox one; 21. Threaded rod; 22. Gearbox two; 23. Elastic element three; 24. Vibrator; 25. Movable disc; 26. Impact frame. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] In the description of this invention, it should be noted that the terms "vertical," "upper," "lower," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the addition of "a," "b," "c," and "d" after the component names is for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] like Figures 1-4 As shown, a three-layer co-extrusion die head for a physical foaming machine used in Teflon production that is easy to disassemble includes a die head body 1. The die head body 1 is provided with three co-extrusion mechanisms. Each co-extrusion mechanism includes a connector 3 and a material channel opened on the die head body 1. The connector 3 is connected to the die head body 1 and is connected to the material channel. The die head body 1 is provided with a discharge trough 18, and the material channel is connected to the discharge trough 18. The die head body 1 is characterized by having a switching device 8, a cooling pipe 9, and a vibrator 24 connected to it. The switching device 8 is connected to the cooling pipe 9, and the cooling pipe 9 is externally connected to a cooling water circulation device. A rotating cover 19 is movably connected to the die head body 1. The die head body 1 is provided with a drive mechanism, and the switching device 8 extends to the inner wall of one of the material channels.

[0032] The physical foaming machine three-layer co-extrusion die head of the present invention can be used for the production of Teflon, as well as for the production of other plastics.

[0033] like Figures 2-4 As shown, based on the above scheme, in a preferred setting, the drive mechanism includes a rack 4 and a rotating rod 6. The rack 4 is slidably connected to one of the joints 3. The rack 4 extends into the interior of the machine head body 1. The rack 4 is connected to the inner wall of the machine head body 1 through an elastic element 5. The rotating rod 6 is rotatably connected to the inner wall of the machine head body 1. A gear 7 is fixedly connected to the rotating rod 6. The gear 7 meshes with the rack 4.

[0034] The switching device 8 has a transmission cavity 10, a curved cavity 16, and a connecting channel 17. The curved cavity 16 and the connecting channel 17 are connected. A ball stop 11 is rotatably connected to the inner wall of the curved cavity 16. The ball stop 11 has a ball hole 12. The ball stop 11 extends into one of the material channels. The ball stop 11 and the rotating rod 6 are fixedly connected. A T-shaped baffle 14 is slidably connected to the inner wall of the transmission cavity 10. The T-shaped baffle 14 is connected to the inner wall of the transmission cavity 10 through an elastic element 15. The T-shaped baffle 14 extends into the inner wall of the connecting channel 17. A top member 13 is fixedly connected to the rotating rod 6. The top member 13 is located inside the transmission cavity 10.

[0035] To achieve the purpose of speed conversion, a gearbox 20 is fixedly connected to the main body 1 of the machine head. The input shaft of the gearbox 20 is fixedly connected to the rotating rod 6, and the output shaft of the gearbox 20 is fixedly connected to the rotating cover 19.

[0036] like Figures 5-7 As shown, further, in order to achieve vibration-induced blockage, a second gearbox 22 is fixedly connected to the inner wall of the machine head body 1. The input shaft of the second gearbox 22 is fixedly connected to the rotating rod 6, and a threaded rod 21 is fixedly connected to the output shaft of the second gearbox 22. The threaded rod 21 is rotatably connected to the inner wall of the machine head body 1.

[0037] The vibrator 24 is slidably connected to the inner wall of the machine head body 1. The vibrator 24 has a threaded hole, and the threaded rod 21 is threadedly connected to the inner wall of the threaded hole. The inner wall of the vibrator 24 is slidably connected to the impact frame 26. The impact frame 26 is connected to the inner wall of the vibrator 24 through the elastic element 23. The impact frame 26 is rotatably connected to the movable disk 25 through the rotating shaft.

[0038] like Figure 2 As shown, as an optional solution, the vibrator 24 includes a sliding part and a housing part that are connected to each other. The sliding part is slidably connected to the machine head body 1, and the impact frame 26 is slidably connected inside the housing part. The housing part has an open structure at the top and bottom.

[0039] like Figure 3 As shown, preferably, the vertical section of the T-shaped baffle 14 is provided with an elastic buffer section.

[0040] In addition, heat-conducting components can be embedded between adjacent material channels to achieve heat conduction between adjacent material channels, so that cooling water can remove the heat from multiple material channels.

[0041] Furthermore, the distance between the leftmost end of the movable disc 25 and the rotating shaft is greater than the distance between the rightmost end of the movable disc 25 and the rotating shaft, so that the center of gravity of the movable disc 25 will shift to the left of the rotating shaft after the water level rises, thus realizing the automatic water pouring function.

[0042] Furthermore, the cooling water circulation device includes a water tank and a water pump, and the water pump can drive the water in the water tank into the cooling pipe 9 for circulation.

[0043] In addition, the connector 3 is provided with a convenient connection part.

[0044] Regarding the setting of the convenient connection part one, optionally, the convenient connection part one is flange one.

[0045] Implementation process: Connect the convenient connection part 1 of the three connectors 3 to the convenient connection part 2 on the three physical foaming machines respectively. The convenient connection part 1 is preferably flange 1, and the convenient connection part 2 is preferably flange 2. Flange 1 and flange 2 can be quickly and conveniently connected and disassembled. Flange 2 presses the rack 4, and the elastic element 1 5 is compressed. At this time, the vibrator 24 is located to the left of the lower connector 3, which does not obstruct the connection between the connector 3 and the physical foaming machine. The blocking ball 11 blocks the curved cavity 16. The top part 13 does not abut against the T-shaped baffle 14. The lower end of the T-shaped baffle 14 is almost flush with the top wall of the connecting channel 17. The rotating cover 19 is in the open state so that the discharge chute 18 is directly connected to the outside to facilitate discharge. The center of gravity of the movable plate 25 is at the rotating shaft so that it will not tilt. The impact frame 26 abuts against the inner top wall of the vibrator 24.

[0046] When the main body 1 of the die head is in use, the water pump is turned on so that the water tank provides flowing cooling water to the inner cooling pipe 9. The cooling water flows back from the cooling pipe 9 through the connecting channel 17 and then back into the cooling pipe 9, thereby cooling the main body 1 of the die head and cooling the melt in the material channel.

[0047] When cleaning of the material channel is required, disconnect the flanges of the three connectors 3 from the flanges 2 on the three physical foaming machines. The rack 4, no longer pressed by the flanges 2, moves downwards under the elastic force of the elastic element 5, thereby driving the gear 7 and the rotating rod 6 to rotate. After being accelerated by the gearbox 20, the rotating rod 6 causes the cover 19 to rotate. The rotating rod 6 stops rotating when the ball stopper 11 and the top piece 13 reach a certain angle (the ball stopper 11 and the top piece 13 have rotated approximately 90 degrees). At this time, the cover 19 seals the discharge chute 18 (the cover 19 has rotated approximately 180 degrees), preventing the discharge chute 18 from directly connecting to the outside, allowing subsequent cooling water to enter through the discharge chute 18. Within each material channel, the connecting channel 17 is connected to one of the material channels via the ball hole 12. The top member 13 pushes the T-shaped baffle 14 downwards against the elastic force of the elastic element 15, causing the bottom wall of the T-shaped baffle 14 to abut against the bottom wall of the connecting channel 17, thereby sealing the connecting channel 17. Cooling water flows into the left end of the connecting channel 17 from the cooling pipe 9, changing its flow path. The cooling water does not pass through the connecting channel 17 but instead flows through the ball hole 12 into one of the material channels. The cooling water gradually fills all the material channels and the discharge trough 18, thus cleaning them without the need for additional rinsing devices, achieving a quick and convenient cleaning effect. The cooling water flows out from the three connectors 3. A container can be used to collect the cooling water, which contains Teflon. Teflon is a plastic, facilitating subsequent recycling of waste plastics.

[0048] When the rotating rod 6 rotates, it will also accelerate the threaded rod 21 through the transmission 22. Since the threaded rod 21 is threadedly connected to the threaded hole on the vibrator 24, the threaded rod 21 will drive the vibrator 24 to move to the right, causing the movable plate 25 to move to the right and below the connector 3. The cooling water flowing out of the connector 3 will fall into the movable plate 25, and the water level in the movable plate 25 will gradually rise. The impact frame 26 and the movable plate 25 will overcome the elastic force of the elastic element 23 and gradually move downward. At this time, the movable plate 25 will still not rotate significantly. When the water level in the movable plate 25 rises to a certain height, since the distance between the leftmost end of the movable plate 25 and the rotating shaft is greater than the distance between the rightmost end of the movable plate 25 and the rotating shaft, the overall center of gravity of the movable plate 25 will shift to the left of the rotating shaft, and the movable plate 25 will rotate around As the rotating shaft rotates counterclockwise, most of the water in the movable disc 25 is gradually emptied, almost completely. At this moment, the weight of the impact frame 26 decreases instantly. Under the elastic force of the elastic element 23, the impact frame 26 moves upward rapidly and impacts the inner top wall of the vibrator 24, causing the vibrator 24 to vibrate. The vibration of the vibrator 24 is transmitted to the machine head body 1. The machine head body 1 uses the vibration to shake off the blockages in the material channel that cannot be washed away by the cooling water or the material adhering to the inner wall of the material channel. Then, with the help of the cooling water, the blockages are washed away, thereby improving the cleaning effect. After several reciprocating swings, the movable disc 25 will return to its original position and stop swinging. The movable disc 25 will be reloaded with cooling water. In this way, the impact frame 26 will repeatedly cause the vibrator 24 and the machine head body 1 to produce automatic, non-electric vibration.

[0049] After cleaning, reconnect the three flanges 1 and 3 flanges 2. One of the flanges 2 will push the rack 4, causing the vibrator 24 to move to the left and disengage from the lower connector 3. The ball 11 will block the curved cavity 16, and the connecting channel 17 will be reconnected. The principle of component reset can be easily understood from the above content, and will not be described again here.

[0050] To address the issues of cumbersome disassembly and cleaning of the co-extrusion die head and cooling pipe 9, resulting in low cleaning and maintenance efficiency, this application addresses this problem by installing a connector 3 and a convenient connection part on the die head body 1. This allows for quick connection and disassembly between the die head body 1 and the physical foaming machine. After the connector 3 is disconnected, the rack 4, under the action of the elastic element 5, is linked, driving the gear 7 and the rotating rod 6 to rotate. This causes the rotating cover 19 to automatically flip and block the discharge chute 18. Simultaneously, the rotating rod 6 drives the blocking ball 11 to rotate, connecting the ball hole 12 with the material channel. This changes the direction of the cooling water flow, allowing the cooling water to directly enter the material channel from the cooling pipe 9 through the ball hole 12 and further flow into the discharge chute 18, thus achieving flushing of multiple material channels. This eliminates the need to completely disassemble the connection between the die head body 1 and the cooling pipe 9, and also eliminates the need for additional preparation and external flushing equipment. The cooling water from the cooling pipe 9 can be used to directly enter the cleaning state, significantly reducing manual operation steps and improving maintenance and cleaning efficiency.

[0051] In addition, to address the problem of stubborn deposits being difficult to remove with water flow and easily causing blockages, the linkage of the rack 4 can also cause the rotating rod 6 to drive the threaded rod 21 to rotate through the gearbox 22, so that the vibrator 24 moves along the inner wall of the machine head body 1 to below the joint 3; after the cooling water falls into the movable plate 25, the center of gravity structure is changed by the water level of the movable plate 25, so that the impact frame 26 moves up periodically under the action of the elastic element 23 and impacts the inner wall of the vibrator 24, thereby causing the vibrator 24 to generate continuous non-electric vibration on the machine head body 1. This vibration can effectively loosen and remove the deposits on the inner wall of the material channel, and simultaneously flush away the blockages with the cooling water, significantly improving the cleaning quality and anti-blocking effect.

[0052] The components, modules, mechanisms, and devices in this invention that are not described in detail are all general standard parts or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A three-layer co-extrusion die head for a physical foaming machine used in Teflon production that is easy to disassemble, comprising a die head body (1), three co-extrusion mechanisms on the die head body (1), each co-extrusion mechanism including a connector (3) and a material channel opened on the die head body (1), the connector (3) being connected to the die head body (1), the connector (3) being connected to the material channel, and a discharge trough (18) being opened on the die head body (1), the material channel being connected to the discharge trough (18), characterized in that, The main body (1) of the machine head is connected to a switching device (8), a cooling pipe (9) and a vibrator (24). The switching device (8) and the cooling pipe (9) are connected. The cooling pipe (9) is connected to a cooling water circulation device. The main body (1) of the machine head is movably connected to a rotating cover (19). The main body (1) of the machine head is equipped with a drive mechanism. The switching device (8) extends to the inner wall of one of the material channels. The drive mechanism includes a rack (4) and a rotating rod (6). The rack (4) is slidably connected to one of the joints (3). The rack (4) extends into the inside of the machine head body (1). The rack (4) is connected to the inner wall of the machine head body (1) through an elastic element (5). The rotating rod (6) is rotatably connected to the inner wall of the machine head body (1). A gear (7) is fixed on the rotating rod (6). The gear (7) meshes with the rack (4). The switching device (8) is provided with a transmission cavity (10), a curved cavity (16) and a connecting channel (17). The curved cavity (16) and the connecting channel (17) are connected. A ball (11) is rotatably connected to the inner wall of the curved cavity (16). A ball hole (12) is provided on the ball (11). The ball (11) extends into one of the material channels. The ball (11) and the rotating rod (6) are fixedly connected. A T-shaped baffle (14) is slidably connected to the inner wall of the transmission cavity (10). The T-shaped baffle (14) is connected to the inner wall of the transmission cavity (10) through an elastic element (15). The T-shaped baffle (14) extends to the inner wall of the connecting channel (17). A top piece (13) is fixedly connected to the rotating rod (6). The top piece (13) is located in the transmission cavity (10). A gearbox (20) is fixedly connected to the main body (1) of the machine head. The input shaft of the gearbox (20) is fixedly connected to the rotating rod (6), and the output shaft of the gearbox (20) is fixedly connected to the rotating cover (19). The inner wall of the machine head body (1) is fixedly connected to the second gearbox (22), the input shaft of the second gearbox (22) is fixedly connected to the rotating rod (6), and the output shaft of the second gearbox (22) is fixedly connected to the threaded rod (21), which is rotatably connected to the inner wall of the machine head body (1). The vibrator (24) is slidably connected to the inner wall of the head body (1). The vibrator (24) has a threaded hole, and the threaded rod (21) is threadedly connected to the inner wall of the threaded hole. The inner wall of the vibrator (24) is slidably connected to the impact frame (26). The impact frame (26) is connected to the inner wall of the vibrator (24) through the elastic element three (23). The impact frame (26) is rotatably connected to the movable disk (25) through the rotating shaft.

2. The easily disassembled three-layer co-extrusion die head for physical foaming machine used in Teflon production according to claim 1, characterized in that, The vertical section of the T-shaped baffle (14) is provided with an elastic buffer.

3. The easily disassembled three-layer co-extrusion die head for physical foaming machine used in Teflon production according to claim 2, characterized in that, A heat-conducting element is embedded between adjacent material channels.

4. The easily disassembled three-layer co-extrusion die head for physical foaming machine used in Teflon production according to claim 3, characterized in that, The distance between the leftmost end of the movable disk (25) and the pivot is greater than the distance between the rightmost end of the movable disk (25) and the pivot.

5. The easily disassembled three-layer co-extrusion die head for physical foaming machine used in Teflon production according to claim 4, characterized in that, The cooling water circulation device includes a water tank and a water pump.

6. A three-layer co-extrusion die head for a physical foaming machine used in Teflon production that is easy to disassemble, as described in any one of claims 1-5, characterized in that... The connector (3) is provided with a convenient connection part.

7. The easily disassembled three-layer co-extrusion die head for physical foaming machine used in Teflon production according to claim 6, characterized in that, The convenient connection part is a flange.

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