Extruder head device applied to PCR (Polymerase Chain Reaction) plastics

Abstract

The invention discloses an extruder head device applied to PCR (Polymerase Chain Reaction) plastics, and belongs to the field of head devices. The device mainly comprises an extrusion assembly, a machine head assembly is fixedly installed at one end of the extrusion assembly, a heating unit can be integrally arranged on the outer side of the machine head assembly, a driving piece is fixedly installed on a supporting frame, a machine barrel is fixedly installed on the supporting frame, and a hopper can be used for adding materials. According to the extruder head for waste plastic high-temperature recycling and reusing, the filter screen can be integrally installed by arranging the inserting plate, meanwhile, the inserting plate can be rapidly taken out from the interior of the machine head main body through self rotation of the lead screw, and therefore the filter screen can be exposed out of the machine head main body; therefore, a professional tool is not needed when the filter screen is disassembled, an operator does not touch the internal structure of the machine head main body in the taking-out process, and the use effect of the filter screen can be improved.

Description

Technical Field

[0001] This application relates to the technical field of extruders, specifically to an extruder head device for PCR plastic applications. Background Art

[0002] An extruder for waste plastic recycling and reuse is a device specifically used to process waste plastics. Through specific mechanical and thermal processing processes, it reprocesses waste plastics into plastic products or plastic raw materials with certain shapes and properties. For example, in a waste plastic recycling factory, it can recycle waste plastics from different sources such as waste plastic bottles, plastic films, and plastic pipes. First, these waste plastics are broken into smaller pieces, and then fed into the barrel through the feeding system of the extruder;

[0003] Currently, the head device we use needs to be used in cooperation with the extruder. After melting the material at high temperature, the extruder transports it to the inside of the head device, and the material is shaped and discharged through the head. When this head is in use, a filter screen is provided inside it. The filter screen is located between the extruder and the head, and it is used to intercept impurities and prevent larger particle impurities from entering the inside of the head;

[0004] However, when the filter screen filters impurities for a long time, it will continuously accumulate. In this way, when the filter screen accumulates to a certain extent, it needs to be replaced. Usually, the filter screen requires professional tools, and during the removal process, the operator needs to spend a lot of time and energy to operate carefully to avoid damaging the filter screen and the internal structure of the head. This operation is rather troublesome and unstable.

[0005] Therefore, it is necessary to provide an extruder head device for PCR plastic applications to solve the above problems. Summary of the Invention

[0006] Based on the above problems existing in the prior art, the problem to be solved by this application is: to provide an extruder head device for PCR plastic applications, achieving the effect of being able to easily clean and replace the screen inside the head.

[0007] The technical solution adopted by this application to solve its technical problems is: an extruder head device for PCR plastic applications, including an extrusion assembly. One end of the extrusion assembly is fixedly installed with a head assembly. A heating unit can be integrally arranged on the outer side of the head assembly. The extrusion assembly includes a support frame, on which a driving member is fixedly installed, a barrel is fixedly installed on the support frame, a hopper is fixedly installed on the barrel, the hopper can add materials, a screw is rotated inside the barrel, and the input end of the screw is fixedly connected to the output end of the driving member. The head assembly includes a head body, on the top of the head body is provided a fixing plate, at the bottom of the fixing plate is fixedly installed an insertion plate, the insertion plate is inserted into the inside of the head body, and two groups of filter screens are clamped inside the insertion plate. The two groups of filter screens can have different numbers.

[0008] Further, a number of holes are opened on the head body. A number of fixing pins are fixedly installed on the holes of the barrel close to the head body. The holes of the head body can be inserted into the fixing pins. One end of the fixing pin is provided with a thread, and a nut is threadedly connected to the thread of the fixing pin. The head body can be spliced and installed on one side of the barrel.

[0009] Further, two support columns a are fixedly installed on the support frame close to the head body. A lead screw is rotatably connected to one of the support columns a, a turning handle is fixedly installed on the lead screw, and at the same time, a limiting rod is fixedly installed on the other group of support columns a. Both ends of the fixing plate are located on the lead screw and the limiting rod. One end of the fixing plate is threadedly connected to the lead screw, and the other end of the fixing plate is slidably connected to the limiting rod.

[0010] Further, clamping strips are fixedly installed at both ends of the two groups of filter screens. Card slots are opened on the insertion plate close to the clamping strips, and the clamping strips can be clamped inside the card slots.

[0011] Further, a magnet is fixedly installed at the deep part of the card slot. The end of the clamping strip can be made of a metal material, and the clamping strip can contact the magnet.

[0012] Further, two support columns b are also fixedly installed on the support frame close to the head body. Support rods are fixedly installed on the support columns b. A hinge rod is movably installed between the support rods. The hinge rod can be adjusted by itself. A cutting knife is fixedly installed at the bottom of the hinge rod. The cutting knife is close to the outer side of the head body. Clamping rings are fixedly installed at both ends of the cutting knife, and the clamping rings are slidably installed on the support rods.

[0013] Further, a stop block is fixedly installed on the support column b. The cutting knife and the stop block are in the same position, and the cutting knife can contact the stop block. Springs are sleeved on the outer sides of the two support rods, and the springs can be fixedly connected to the bottom of the clamping rings.

[0014] Furthermore, two sliding holes are formed in the limiting rod, and two supporting strips are fixedly installed on the head main body. The supporting strips can slide on and support the sliding holes of the limiting rod. Threads are provided at the ends of the supporting strips, and fixing caps are threadedly installed at the threaded parts of the supporting strips. The fixing caps are located at the ends of the supporting strips.

[0015] The beneficial effects of this application are as follows:

[0016] For the extruder head device applied to PCR plastics provided by this application, by setting an insertion plate, the filter screen can be integrally installed. At the same time, through the self-rotation of the lead screw, the insertion plate can be quickly taken out inside the head main body, so that the filter screen will be exposed outside the head main body. In this way, when disassembling the filter screen, no professional tools are needed, and during the taking-out process, the operator will not touch the internal structure of the head main body, thereby improving the use effect of the filter screen.

[0017] For the extruder head device applied to PCR plastics provided by this application, by arranging two groups of filter screens inside the head assembly, and at the same time the two groups of filter screens can have different numbers, the filter screens can achieve filtering with different precisions. The first group of filter screens can first intercept larger particles of impurities and unmelted particles, etc., and the second group of filter screens further filter out finer impurities, making the filtration more thorough, thereby better ensuring the quality of the extruded products and reducing product defects caused by impurities.

[0018] For the extruder head device applied to PCR plastics provided by this application, the whole head assembly can be heated by an external heating element. This integrated single module can better achieve uniform distribution of heat, avoiding local overheating or overcooling phenomena caused by differences in thermal resistance between structural parts, enabling the plastic melt to obtain a more uniform temperature field inside the head, and contributing to improving the quality and stability of the extruded products.

[0019] For the extruder head device applied to PCR plastics provided by this application, a cutting knife can be provided at the end of the head main body, so that the cutting knife can be operated to cut the material conveyed by the head main body. Compared with manual cutting, the cutting knife installed on one side of the head main body can achieve semi-automatic cutting operation, greatly shortening the cutting time interval and reducing the downtime waiting time during the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings forming a part of this application are used to provide a further understanding of this application. The schematic embodiments and descriptions thereof of this application are used to explain this application and do not constitute an improper limitation to this application.

[0021] In the drawings:

[0022] Figure 1 It is the overall schematic diagram of the extruder head device for the application of PCR plastics in this application;

[0023] Figure 2 is Figure 1 the schematic diagram of the extrusion component in;

[0024] Figure 3 is Figure 1 the schematic diagram of the head component in;

[0025] Figure 4 is Figure 3 the schematic diagram of the head body of the head component in;

[0026] Figure 5 is Figure 4 the schematic diagram of the plug board of the head component in;

[0027] Figure 6 is Figure 5 the schematic diagram of the filter screen of the head component in;

[0028] Figure 7 is Figure 6 the schematic diagram of the card slot in;

[0029] Figure 8 is Figure 3 the schematic diagram of the plug knife of the head component in;

[0030] Among them, each reference numeral in the figure:

[0031] 10. Extrusion component; 11. Support frame; 12. Driving part; 13. Barrel; 14. Hopper; 15. Screw;

[0032] 20. Head component; 21. Head body; 22. Fixed plate; 23. Plug board; 24. Support column a; 25. Lead screw; 26. Limit rod; 27. Rotating handle; 28. Filter screen; 29. Card strip; 210. Card slot; 211. Magnet; 212. Fixed pin; 213. Nut; 214. Support bar; 215. Fixed cap; 216. Support column b; 217. Support rod; 218. Hinge rod; 219. Plug knife; 220. Snap ring; 221. Block; 222. Spring. Detailed implementation manners

[0033] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will refer to the drawings and combine the embodiments to detail this application.

[0034] To enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts shall fall within the scope of protection of this application.

[0035] As Figure 1 - Figure 8 shown, this application provides an extruder head device for PCR plastic application, including an extrusion assembly 10 and a head assembly 20 fixedly installed on the extrusion assembly 10. The extrusion assembly 10 is used to add waste plastics, and under the action of a heating module arranged outside the extrusion assembly 10, the plastic raw materials are gradually melted and plasticized to form a uniform viscous flow state melt, providing materials with good fluidity and plasticity for subsequent extrusion molding and then performing high-temperature conveying work. This extruder can be applied to PCR plastic, which is a plastic material obtained by recycling and reprocessing waste plastic products. By processing this material with an extruder, plastic waste landfilling and incineration can be reduced, and environmental pollution can be lowered. The head assembly 20 can adjust and control the flow rate and pressure of the material and perform the molding work.

[0036] The extrusion assembly 10 includes a support frame 11, on which a driving member 12 is fixedly installed. At the same time, a barrel 13 is fixedly installed on the support frame 11, and a hopper 14 is fixedly installed on the barrel 13. The hopper 14 can add materials, enabling the materials to quickly enter the interior of the barrel 13 through the hopper 14. A screw 15 rotates inside the barrel 13, and at the same time, the input end of the screw 15 is fixedly connected to the output end of the driving member 12. And a heating module can be arranged on the outer side of the barrel 13, which can melt the materials inside the barrel 13. By turning on the driving member 12, the screw 15 can be driven to rotate inside the barrel 13, so that the melted materials inside the barrel 13 can be conveyed into the interior of the head assembly 20.

[0037] The head assembly 20 includes a head main body 21 fixedly installed on one side of the barrel 13. A cavity is opened inside the head main body 21. The cavity of the head main body 21 is provided with a flow splitting device such as a flow splitting cone or a flow splitting plate, which splits the melt entering the cavity into multiple strands and then converges and extrudes. The shape and angle of this flow splitting device can be designed according to the specific shape and requirements of the extruded product.

[0038] A number of groups of holes are provided on the head body 21. At the same time, a number of groups of fixing pins 212 are fixedly installed on the holes of the barrel 13 close to the head body 21. The holes of the head body 21 can accommodate the fixing pins 212, so that the head body 21 can be spliced and installed on one side of the barrel 13. At the same time, a thread is provided at one end of the fixing pin 212, and a nut 213 is threadedly connected to the thread. When the hole is on the fixing pin 212, at this time, the nut 213 can be installed at the thread of the fixing pin 212, so that the head body 21 and the barrel 13 can be fixedly combined, and it can be better disassembled, the service life is greatly improved, and the use space is wider.

[0039] Moreover, the whole of the head assembly 20 can be heated by an external heating element. This integrated single module can better achieve uniform heat distribution, avoiding local overheating or overcooling caused by the thermal resistance difference between structural parts, enabling the plastic melt to obtain a more uniform temperature field in the head, which helps to improve the quality and stability of the extruded products.

[0040] A fixing plate 22 is provided at the top of the head body 21. At the same time, a plug plate 23 is fixedly installed at the bottom of the fixing plate 22. The plug plate 23 is inserted into the inside of the head body 21. At the same time, two groups of filter meshes 28 are clamped inside the plug plate 23. The two groups of filter meshes 28 can be of different numbers, so that the filter meshes 28 can achieve filtering with different precisions. The first group of filter meshes 28 can first intercept larger particles of impurities and unmelted particles, etc., and the second group of filter meshes 28 further filters out finer impurities, making the filtering more thorough, so as to better ensure the quality of the extruded products and reduce product defects caused by impurities. And the two groups of filter meshes 28 are equivalent to setting a double insurance. Even if one group of filter meshes 28 has local damage or a decrease in filtering ability, etc., the other group of filter meshes 28 can still continue to play a filtering role, reducing the risk of impurities entering the extruded products and improving the stability and reliability of production.

[0041] Two support columns a24 are fixedly installed on the support frame 11 close to the head main body 21. A lead screw 25 is rotatably connected to one of the support columns a24. A turning handle 27 is fixedly installed on the lead screw 25. At the same time, a limiting rod 26 is fixedly installed on the other group of support columns a24. Both ends of the fixing plate 22 are located on the lead screw 25 and the limiting rod 26. One end of the fixing plate 22 is threadedly connected to the lead screw 25, and the other end of the fixing plate 22 is slidably connected to the limiting rod 26. Thus, the turning handle 27 can be rotated to drive the lead screw 25 to rotate on the support column a24, and then the fixing plate 22 can move up and down under the limitation of the limiting rod 26. When the fixing plate 22 moves upward, the insertion plate 23 can quickly disengage from the inside of the head main body 21, so that the insertion plate 23 and the filter screen 28 can be exposed outside the head main body 21. In this way, no professional tools are needed to disassemble the filter screen 28, and during the removal process, the operator will not touch the internal structure of the head main body 21, which can improve the use effect of the filter screen 28.

[0042] At the same time, clamping strips 29 are fixedly installed at both ends of the two groups of filter screens 28. A clamping groove 210 is formed on the insertion plate 23 close to the clamping strip 29. The clamping strip 29 can be clamped inside the clamping groove 210. When the clamping strip 29 approaches the clamping groove 210, the filter screen 28 can be slightly rotated and adjusted at this time, so that the end of the clamping strip 29 will be clamped deep in the clamping groove 210. In this way, the filter screen 28 can be stably installed inside the insertion plate 23. When the filter screen 28 needs to be disassembled, it can be slightly rotated and adjusted in the reverse direction at this time, so that the clamping strip 29 will move away from the deep part of the clamping groove 210. At this time, the clamping strip 29 can be disengaged at the clamping groove 210, and thus the filter screen 28 can be quickly taken out inside the insertion plate 23.

[0043] And a magnet 211 is fixedly installed deep in the clamping groove 210. The end of the clamping strip 29 can be made of a metal material. Thus, when the clamping strip 29 enters the deep part of the clamping groove 210, the clamping strip 29 will contact the magnet 211 at this time. In this way, the stability of the filter screen 28 installed inside the insertion plate 23 can be further improved. When the filter screen 28 needs to be disassembled, more force can be spent on rotating and adjusting the filter screen 28 at this time, so that the end of the clamping strip 29 can be disengaged from the magnet 211, which is convenient for the clamping strip 29 to be taken out of the clamping groove 210.

[0044] Near the head main body 21 of the support frame 11, two support columns b216 are fixedly installed. On each of the support columns b216, a support rod 217 is fixedly installed. Between the support rods 217, a hinge rod 218 is movably installed. The hinge rod 218 can be adjusted by itself. At the same time, a cutting knife 219 is fixedly installed at the bottom of the hinge rod 218. The cutting knife 219 is close to the outside of the head main body 21. At both ends of the cutting knife 219, snap rings 220 are fixedly installed. The snap rings 220 are slidably installed on the support rods 217. The cooperation between the support rods 217 and the snap rings 220 enables the movement direction of the cutting knife 219 to be limited. Thus, the hinge rod 218 can be adjusted downward, so that the cutting knife 219 will move on the outside of the head main body 21. Then, the material passing through the head main body 21 can be cut off by the cutting knife 219. Compared with manual cutting, the cutting knife 219 can realize semi-automatic cutting operation, greatly shortening the cutting time interval and reducing the downtime waiting time during the production process. And the cutting knife 219 can be in the form of hot cutting or cold cutting. Thus, the cutting knife 219 can meet the cutting requirements of plastic products of different types and specifications.

[0045] A stop block 221 is fixedly installed on the support column b216. At the same time, the cutting knife 219 and the stop block 221 are in the same position. When the cutting knife 219 moves downward for cutting, at this time, the cutting knife 219 will contact the stop block 221. When the cutting knife 219 cuts the material, it can be supported by the stop block 221. Thus, the material can be quickly cut off.

[0046] On the outer sides of the two groups of support rods 217, springs 222 are sleeved. At the same time, the springs 222 can be fixedly connected to the bottom of the snap rings 220. Thus, when the cutting knife 219 moves, at this time, through the springs 222, it can be reset at the bottom of the snap rings 220, enabling the cutting knife 219 to be assisted in bouncing at one end of the head main body 21. In this way, after the cutting knife 219 completes a cutting action, the cutting knife 219 can be quickly pulled back to the initial position to prepare for the next cutting. Thus, the cutting frequency and efficiency are improved. During the continuous extrusion cutting production process, this helps to maintain a stable production rhythm.

[0047] Two sliding holes are formed in the limiting rod 26. At the same time, two support bars 214 are fixedly installed on the main body 21 of the machine head. The support bars 214 can slide on and support the sliding holes of the limiting rod 26. When the main body 21 of the machine head needs to be disassembled on one side of the barrel 13, at this time, the main body 21 of the machine head can slide on the limiting rod 26 through the support bars 214, so that the main body 21 of the machine head can be stably disassembled on one side of the barrel 13, thereby improving the stability of the disassembly of the main body 21 of the machine head. And the main body 21 of the machine head can be limited by the sliding of the support bars 214. Thus, when the main body 21 of the machine head is ready to be installed on the barrel 13, at this time, after the support bars 214 are connected to the limiting rod 26, they can accurately position the main body 21 of the machine head.

[0048] Threads are provided at the ends of the support bars 214. A fixing cap 215 is threadedly installed at the threaded part of the support bars 214. The fixing cap 215 is located at the end of the support bars 214, so that the support bars 214 can be prevented from detaching when sliding on the limiting rod 26, thereby ensuring stability. At the same time, after the fixing cap 215 and the support bars 214 are disassembled, at this time, the support bars 214 can be taken out on the limiting rod 26, thus facilitating the disassembly of the main body 21 of the machine head.

[0049] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An extruder head device for PCR plastic application, comprising an extrusion assembly (10), characterized in that: A head assembly (20) is fixedly mounted on one end of the extrusion assembly (10), and a heating unit can be provided on the outer side of the head assembly (20). The extrusion assembly (10) comprises a support frame (11), a driving member (12) is fixedly mounted on the support frame (11), a barrel (13) is fixedly mounted on the support frame (11), a hopper (14) is fixedly mounted on the barrel (13), and the hopper (14) can be used to add materials. The inner part of the barrel (13) is rotated A screw rod (15), the input end of the screw rod (15) is fixedly connected to the output end of the driving member (12), the head assembly (20) includes a head body (21), a fixing plate (22) is arranged on the top of the head body (21), a plug plate (23) is fixedly installed on the bottom of the fixing plate (22), the plug plate (23) is plugged into the inside of the head body (21), and two groups of filter screens (28) are clamped inside the plug plate (23), and the two groups of filter screens (28) can be of different numbers.

2. The extruder head device for PCR plastic application according to claim 1, characterized in that: The machine head body (21) is provided with a plurality of groups of holes, and the machine barrel (13) is fixedly installed with a plurality of groups of fixing pins (212) on the holes close to the machine head body (21). The holes of the machine head body (21) can enter the fixing pins (212), one end of the fixing pin (212) is provided with a thread, and a nut (213) is threadedly connected to the thread of the fixing pin (212), and the machine head body (21) can be spliced ​​and installed on one side of the machine barrel (13).

3. The extruder head device for PCR plastic application according to claim 1, characterized in that: The support frame (11) is fixedly mounted with two support columns a (24) near the machine head body (21), one of the support columns a (24) is rotatably connected with a screw rod (25), a turning handle (27) is fixedly mounted on the screw rod (25), and a limit rod (26) is fixedly mounted on the other group of support columns a (24), both ends of the fixed plate (22) are on the screw rod (25) and the limit rod (26), one end of the fixed plate (22) is threadedly connected to the screw rod (25), and the other end of the fixed plate (22) is slidably connected to the limit rod (26).

4. The extruder head device for PCR plastic application according to claim 1, characterized in that: Both ends of the two groups of filter screens (28) are fixedly mounted with clamping strips (29); a clamping slot (210) is provided on the plug plate (23) near the clamping strip (29); and the clamping strip (29) can be clamped inside the clamping slot (210).

5. The extruder head device for PCR plastic application according to claim 4, characterized in that: A magnet (211) is fixedly installed deep in the card slot (210), and the end of the card strip (29) can be made of metal, and the card strip (29) can be in contact with the magnet (211).

6. The extruder head device for PCR plastic application according to claim 1, characterized in that: Two support columns b (216) are fixedly mounted on the support frame (11) near the machine head body (21), and support rods (217) are fixedly mounted on the support columns b (216). A hinge rod (218) is movably mounted between the support rods (217), and the hinge rod (218) itself can be movably adjusted. A plunger (219) is fixedly mounted at the bottom of the hinge rod (218), and the plunger (219) is close to the outer side of the machine head body (21). Both ends of the plunger (219) are fixedly mounted with a snap ring (220), and the snap ring (220) is slidably mounted on the support rod (217).

7. The extruder head device for PCR plastic application according to claim 6, characterized in that: A stopper (221) is fixedly mounted on the support column b (216); the inserting knife (219) and the stopper (221) are at the same position; the inserting knife (219) can contact the stopper (221); and springs (222) are sleeved on the outer sides of the two groups of support rods (217); and the springs (222) can be fixedly connected to the bottom of the clamping ring (220).

8. The extruder head device for PCR plastic application according to claim 3, characterized in that: The limiting rod (26) is provided with two sliding holes, and the machine head body (21) is fixedly mounted with two support bars (214), and the support bars (214) can slide and support on the sliding holes of the limiting rod (26), and the ends of the support bars (214) are provided with threads, and the threads of the support bars (214) are threadedly mounted with fixing caps (215), and the fixing caps (215) are located at the ends of the support bars (214).

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