Extruding machine

Abstract

The utility model provides an extruder which is used for extruding material strips and comprises a liquid cooling tank, at least two compression rollers and a dustproof cover plate, and cooling liquid is filled in the liquid cooling tank; the at least two compression rollers are arranged in the liquid cooling tank so as to guide the material strips to pass through the liquid cooling tank; wherein one of the at least two pressing rollers is located above the liquid level of the cooling liquid, and the other one of the at least two pressing rollers is located below the liquid level of the cooling liquid; the dustproof cover plate detachably covers the liquid cooling tank, so that the liquid cooling tank forms a closed cavity. According to the extruder provided by the invention, the at least two compression rollers are arranged in the liquid cooling tank, and the liquid cooling tank forms the closed cavity through the dustproof cover plate, so that a material strip is prevented from being in contact with the outside, and the quality defects of hard spots, black spots and the like caused by dust sticking of the material strip are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of extruder equipment, in particular to an extruder. BACKGROUND

[0002] Extrusion molding of an extruder is a production process of plastic processing and molding, wherein a water tank is an important component of a plastic extruder and plays an important role in material cooling.

[0003] In the related art, manufacturers have increasingly high requirements for the quality of extrusion molding materials. After being extruded, the plastic enters the water tank for cooling before being granulated. However, the plastic is prone to introducing foreign matter when being cooled in the water tank, resulting in product defects such as black spots and pockmarks, which affect the yield of products. CONTENT OF THE INVENTION

[0004] The present application provides an extruder to solve the technical problem of product defects such as black spots and pockmarks caused by the introduction of foreign matter when the plastic is cooled in the water tank of the extruder in the related art.

[0005] The present application provides an extruder for extruding a molding strip, comprising:

[0006] A liquid cooling tank containing a cooling liquid;

[0007] At least two pressure rollers arranged in the liquid cooling tank to guide the molding strip through the liquid cooling tank; wherein one of the at least two pressure rollers is located above the liquid level of the cooling liquid, and the other of the at least two pressure rollers is located below the liquid level of the cooling liquid;

[0008] A dustproof cover plate, which is detachably arranged on the liquid cooling tank to form a sealed chamber.

[0009] In a possible implementation, the pressure rollers have a plurality of;

[0010] In the conveying direction of the molding strip, the pressure roller above the liquid level of the cooling liquid is located downstream of the pressure roller below the liquid level of the cooling liquid.

[0011] In a possible implementation, the position of the pressure roller in the liquid cooling tank is adjustable in the conveying direction of the molding strip.

[0012] In a possible implementation, the liquid cooling tank has two opposite side walls each provided with a sliding groove, and the pressure roller has two ends each provided with a mounting seat, the mounting seat being limited and constrained in the sliding groove to constitute sliding displacement of the pressure roller in the liquid cooling tank.

[0013] The mounting seat and the sliding groove are matched and clamped to constitute the limiting and fixing of the pressure roller in the liquid cooling tank.

[0014] In a possible implementation, a fastener is arranged on the mounting seat, and under the action of an external force, the fastener penetrates through the mounting seat and abuts against the sliding groove, thereby limiting and fixing the compression roller in the liquid cooling tank.

[0015] In a possible implementation, the inlet end of the liquid cooling tank is configured with a guide opening with an upward opening, the outlet end of the liquid cooling tank is fixedly provided with a support frame, the support frame extends along the conveying direction of the material strip, and the support frame is provided with a conveying roller for guiding the output of the material strip.

[0016] In a possible implementation, at least two conveying rollers are arranged on the support frame at intervals, the support frame is provided with an air knife, the air knife is located between the two conveying rollers, and the height of the air knife is lower than the height of the conveying rollers.

[0017] In a possible implementation, a dustproof cover is arranged on the support frame, and the dustproof cover covers the conveying rollers and the air knife.

[0018] In a possible implementation, the bottom of the liquid cooling tank is provided with a liquid outlet, the side wall of the liquid cooling tank is provided with an overflow port, and the overflow port and the liquid outlet are connected by the same connecting pipeline.

[0019] In a possible implementation, a liquid level detection component is arranged in the liquid cooling tank.

[0020] The extruder provided in the application can ensure uniform immersion of the material strip in the cooling liquid and avoid uneven cooling to affect product quality, by arranging at least two compression rollers in the liquid cooling tank, one of the at least two compression rollers being located above the liquid level of the cooling liquid, and the other of the at least two compression rollers being located below the liquid level of the cooling liquid.

[0021] In addition, the dustproof cover plate is arranged to form a sealed chamber in the liquid cooling tank, prevent dust and impurities from the outside from entering the liquid cooling tank, ensure the cleanliness of the cooling liquid, avoid the material strip from being contaminated to cause black spot quality defect problems, and be beneficial to improving the extrusion molding quality of the material strip. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and serve to explain the principles of the application together with the specification.

[0023] Figure 1 FIG. 1 is a structural schematic diagram of an extruder in an embodiment of the application;

[0024] Figure 2 is Figure 1Partial assembly structure diagram of medium-pressure roller and liquid cooling tank

[0025] Figure 3 Cooperation diagram of dustproof cover plate and liquid cooling tank in the embodiment of the present application.

[0026] The specific embodiments of the present application have been shown in the above drawings, and will be described in more detail hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments.

[0027] Explanation of reference numerals

[0028] 100-liquid cooling tank; 101-slideway; 102-co-directional slideway; 103-guiding opening; 104-support frame; 105-conveying roller; 106-air knife; 107-liquid outlet; 108-overflow outlet; 109-liquid inlet; 110-liquid level detection component;

[0029] 200-pressing roller; 201-mounting seat; 202-fastener;

[0030] 300-dustproof cover plate; 301-hinge;

[0031] 400-rod. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the present application more clear, the technical solutions in the embodiments of the present application will be described in more detail below by referring to the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals represent the same or similar components or components with the same or similar functions throughout. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the present application, and cannot be understood as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of the present application. The embodiments of the present application will be described in detail below by referring to the drawings.

[0033] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms “mounting”, “connection” and “connection” should be understood in a broad sense, for example, it can be fixedly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0035] The terms "first", "second", "third", "fourth" and the like in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a particular order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein, for example, can be implemented in an order other than those illustrated or described herein.

[0036] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or apparatus including a series of steps or units does not have to be limited to only those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to such processes, methods, products or apparatus.

[0037] As described in the background, in the manufacturing industry of high molecular materials, engineering plastics and the like, cooling is an indispensable link, and extrusion strand granulation is the most commonly used way for special plastic production. In this process, the use of cooling water tank for cooling and shaping of the strand is also an important process in the extrusion granulation process.

[0038] The cooling of the strand by the cooling water tank generally requires the strand to be transported and soaked in the water tank and then output from the water tank. In this process, due to the large span of the cooling water tank, impurities are easily introduced into the strand during soaking and transportation, resulting in product quality defects such as "black spots" and "pockmarks".

[0039] Based on the above related technical description, one or more embodiments of the present application provide an extruder to improve the technical problem of product quality defects caused by impurities introduced into the strand during cooling of the strand by the cooling water tank in the related art.

[0040] The extruder of the embodiments of the present application is described below in conjunction with the drawings.

[0041] As shown in Figure 1 and Figure 3 The extruder provided by the embodiments of the present application is used for extruding a strand 400, and includes a liquid cooling tank 100, at least two compression rollers 200 and a dustproof cover plate 300.

[0042] The liquid cooling tank 100 is internally provided with cooling liquid; at least two compression rollers 200 are arranged inside the liquid cooling tank 100 to guide the material strip 400 to pass through the liquid cooling tank 100; one of the at least two compression rollers 200 is located above the liquid level of the cooling liquid, and the other of the at least two compression rollers 200 is located below the liquid level of the cooling liquid; and a dustproof cover plate 300 is detachably arranged on the liquid cooling tank 100 to form a closed chamber in the liquid cooling tank 100.

[0043] As can be seen from the above description, the extruder of the embodiment of the present application utilizes the height difference formed by the at least two compression rollers 200 in the liquid cooling tank 100, and the material strip 400 can be fully soaked in the liquid cooling tank 100 under the guidance of the compression rollers 200, so that the material strip 400 is uniformly soaked in the cooling liquid, and the uneven cooling does not affect the product quality; in addition, the dustproof cover plate 300 arranged can ensure that the liquid cooling tank 100 forms a closed chamber, and the compression rollers 200 and the material strip 400 are located in the closed chamber, so that the dust and impurities from the outside are prevented from entering the liquid cooling tank 100, the cooling liquid is kept clean, the material strip 400 is prevented from being polluted to cause black spot quality defects, and the extrusion molding quality of the material strip 400 is improved.

[0044] In the embodiment of the present application, the cooling liquid internally provided in the liquid cooling tank 100 can be industrial water or other cooling medium solution, which is not absolutely limited. The compression rollers 200 can be flexibly selected according to the material of the material strip 400 to be extruded and molded, for example, when the extruder is used to extrude and mold a general plastic material strip 400, a stainless steel compression roller 200 can be used, and when the extruder is used to extrude and mold a fiber reinforced plastic material strip 400, a ceramic compression roller 200 can be used, which is not absolutely limited.

[0045] In addition, the extruder should include a heating device, a mold, a driving motor, a control component and other related components for extruding and molding the material strip 400 in addition to the liquid cooling tank 100, and the related components can use the components of the extruder in the related art, which will not be illustrated in the embodiment of the present application.

[0046] As shown in Figure 3 For example, the dustproof cover plate 300 and the liquid cooling tank 100 are rotatably connected through a hinge 301, in the open state, the liquid cooling tank 100 is exposed to the outside, which is convenient for the operator to adjust the compression roller 200 and adjust the cooling liquid in the liquid cooling tank 100, and the dustproof cover plate 300 is rotated to cover the liquid cooling tank 100 to form a closed chamber, and the dustproof cover plate 300 can prevent dust from entering the liquid cooling tank 100, thereby reducing the hidden danger of quality defects of the material strip 400.

[0047] As shown in Figure 1As shown, in some embodiments, there are multiple press rollers 200 , and along the conveying direction of the material strip 400 , the press rollers 200 above the liquid level of the cooling liquid are located downstream of the press rollers 200 below the liquid level of the cooling liquid.

[0048] Figure 1 The middle arrow indicates the conveying direction of the material strips 400. Multiple rollers 200 are spaced apart along the conveying direction. For example, the rollers 200 are divided into two groups: one group of rollers 200 is positioned above the cooling liquid level, while the other group of rollers 200 is positioned below the cooling liquid level. Thus, the material strips 400 first pass through the rollers 200 below the cooling liquid level, where they are guided by the rollers 200 of that group to immerse themselves in the cooling liquid. Afterwards, the material strips 400 are guided out of the cooling liquid by the rollers 200 above the cooling liquid level and pass through the liquid cooling tank 100 for the subsequent pelletizing process. This arrangement ensures that the hot material strips 400 are fully immersed in the cooling liquid and cooled, preventing quality defects caused by uneven cooling of the material strips 400.

[0049] Here, a set of pressing rollers 200 may be Figure 1 The two shown in the example are, of course, other numbers are also possible, for example, a group of pressing rollers 200 includes three or four pressing rollers 200.

[0050] like Figure 1 As shown, in some embodiments, the position of the pressing roller 200 inside the liquid cooling tank 100 is adjustable along the conveying direction of the material strip 400 .

[0051] Exemplarily, the two opposite side walls of the liquid cooling tank 100 are respectively provided with a slide groove 101, and the two ends of the pressure roller 200 are respectively provided with a mounting seat 201, and the mounting seat 201 is limited and constrained in the slide groove 101 to constitute the sliding displacement of the pressure roller 200 in the liquid cooling tank 100; the mounting seat 201 and the slide groove 101 are engaged and clamped to constitute a fixed state of the pressure roller 200 in the liquid cooling tank 100.

[0052] The slide groove 101 in the above embodiment extends along the side length direction of the liquid cooling tank 100. Since the pressure roller 200 is a freely rotating roller, the mounting seat 201 at the end of the pressure roller 200 should ensure that it does not affect the free rotation of the pressure roller 200. For example, the mounting seat 201 adopts a bearing seat, and the end of the pressure roller 200 is fixed in the bearing seat by key fitting.

[0053] by Figure 1As shown in the liquid cooling tank 100, the mounting seat 201 is limited in the sliding groove 101, and can only slide in the direction of the sliding groove 101, and two parallel sliding grooves 101 are provided in the liquid cooling tank 100 in the height direction, and the higher one is above the liquid level of the cooling liquid, and the lower one is below the liquid level of the cooling liquid, so as to ensure that the two groups of compression rollers 200 are respectively located above and below the liquid level of the cooling liquid after installation.

[0054] Here, the lower end of the mounting seat 201 abuts against the sliding groove 101 to form a sliding effect, and the upper side and the lower side of the mounting seat 201 are limited and constrained by the sliding groove 101, so as to avoid the mounting seat 201 from being separated from the sliding groove 101. Generally, a plurality of compression rollers 200 are arranged in parallel in the liquid cooling tank 100, and when the compression roller 200 slides in the sliding groove 101, it is necessary to ensure that the compression roller 200 is also in a parallel state in the final fixed state, which is beneficial to guide the strip 400 to pass out of the liquid cooling tank 100 uniformly and stably, and improve the cooling effect of the strip 400.

[0055] Specifically, the mounting seat 201 is provided with a fastener 202, and under the action of an external force, the fastener 202 penetrates the mounting seat 201 and abuts against the sliding groove 101, so as to form a fixed state of the compression roller 200 in the liquid cooling tank 100.

[0056] As shown in the figure, Figure 2 The fastener 202 in the embodiment of the application can adopt a bolt, and the mounting seat 201 is provided with a threaded hole penetrating through, and the fastener 202 is threadedly provided in the threaded hole, and when an external force is applied to the fastener 202 to tighten it, the fastener 202 penetrates into the mounting seat 201 and gradually abuts against the sliding groove 101, and the abutting force between the fastener 202 and the sliding groove 101 forms a fixed state of the compression roller 200 in the sliding groove 101.

[0057] In the above embodiment, since the opening direction of the sliding groove 101 is towards the inside of the liquid cooling tank 100, the rotation direction of the fastener 202 is parallel to the axial direction of the compression roller 200, and after the fastener 202 is rotated, it abuts against the bottom of the sliding groove 101. In order to further improve the fixing effect between the compression roller 200 and the liquid cooling tank 100, a non-slip pad is arranged on the side of the fastener 202 facing the bottom of the groove, and the non-slip pad is rotatably connected with the fastener 202. The non-slip pad gradually approaches and abuts against the bottom of the sliding groove 101 with the rotation of the fastener 202, and the frictional force between the mounting seat 201 and the sliding groove 101 is enhanced by the non-slip pad.

[0058] As an alternative implementation, the groove bottom of the sliding groove 101 is provided with a plurality of blind holes, i.e. non-through holes, along the length direction of the sliding groove 101. When the fastener 202 is a bolt, an external force is used to tighten the fastener 202, the fastener 202 penetrates into the mounting seat 201 and enters the blind hole along the tightening action, and the insertion between the blind hole and the fastener 202 forms the fixed state of the compression roller 200 in the sliding groove 101.

[0059] In some embodiments, the above-mentioned fastener 202 is provided with two or more than two relative arrangements in the mounting seat 201, and the plurality of fasteners 202 can enhance the fixing effect of the mounting seat 201 in the sliding groove 101.

[0060] It should be noted that in some embodiments, the end portions of the two sliding grooves 101 are connected to the upper end of the liquid cooling tank 100 through the vertically extending co-directional slide 102, and when the end portion of the compression roller 200 enters the sliding groove 101, it is guided to enter different sliding grooves 101 through the co-directional slide 102. The co-directional slide 102 can reduce the interference between the end portion of the compression roller 200 and the side wall of the liquid cooling tank 100, and make the assembly of the compression roller 200 and the sliding groove 101 more convenient.

[0061] Adjusting the position of the compression roller 200 inside the liquid cooling tank 100 can improve the flexibility and adaptability of the compression roller 200 in the liquid cooling tank 100. The change of the position of the compression roller 200 can allow different specifications of the material strip 400 and cooling requirements to be adjusted, thereby adapting to more product specifications and material properties, and improving the versatility of the extruder. In addition, by adjusting the position of the compression roller 200, the immersion time and the conveying path length of the material strip 400 in the cooling liquid can be adjusted, thereby optimizing the cooling effect and ensuring the temperature uniformity of the material strip 400 in the whole cross section, reducing the internal stress and deformation of the material strip 400.

[0062] In addition, the adjustable compression roller 200 can also uniformly distribute the wear condition during the conveying of the material strip 400, prolong the service life of the compression roller 200 and other related components, and reduce the maintenance frequency and cost of the equipment.

[0063] As shown in Figure 1 In some embodiments, the inlet end of the liquid cooling tank 100 is configured with a guide opening 103 with an opening facing outward, and the outlet end of the liquid cooling tank 100 is fixedly provided with a support frame 104 extending along the conveying direction of the material strip 400, and the support frame 104 is provided with a conveying roller 105 for guiding the output of the material strip 400.

[0064] Further, a roller is arranged on the guide opening 103, which is used to guide the material strip 400 into the liquid cooling tank 100, thereby reducing the friction of the material strip 400 during conveying and avoiding wear of the material strip 400 on the guide opening 103. The roller can be a rolling shaft body, which will not be described hereinafter in the embodiments of the present application.

[0065] The support frame 104 described above can be fixed to the outlet end of the liquid cooling tank 100 by welding or bolting. The support frame 104 is provided with at least two conveying rollers 105 at intervals. The support frame 104 is provided with an air knife 106, which is located between the two conveying rollers 105, and the height of the air knife 106 is lower than the height of the conveying rollers 105.

[0066] For example, the conveying roller 105 can adopt a rolling shaft body to reduce the friction of the material strip 400 at the outlet end of the liquid cooling tank 100. A plurality of conveying rollers 105 are arranged at intervals, and an air knife 106 is arranged between adjacent two conveying rollers 105. This design can further improve the cooling and drying effect of the air knife 106 on the material strip 400, and ensure the finished product quality of the material strip 400.

[0067] Here, the air knife 106 can adopt a rectangular air knife 106 in the related art. For example, the air knife 106 sprays compressed air at a high speed through a narrow rectangular nozzle to form a powerful air flow, which is used to dry, clean and cool the material strip 400 passing through the liquid cooling tank 100. Here, the length direction of the air knife 106 is perpendicular to the conveying direction of the material strip 400, and the width direction is parallel to the conveying direction of the material strip 400. When the material strip 400 passes through the air knife 106, it is blown dry by the high-speed air flow and further cooled.

[0068] It should be noted that in the embodiment of the present application, the air flow direction of the air knife 106 is from bottom to top. That is, the nozzle of the air knife 106 is located below the output material strip 400, and the height of the air knife 106 is lower than the height of the conveying roller 105. This can avoid interference between the material strip 400 passing through the conveying roller 105 and the air knife 106 when the material strip 400 passes through the liquid cooling tank 100, thereby ensuring the normal conveying of the material strip 400 through the liquid cooling tank 100.

[0069] In some embodiments, a dustproof cover is arranged on the support frame 104, which covers the conveying roller 105 and the air knife 106. The assembly structure of the dustproof cover on the liquid cooling tank 100 can be referred to the dustproof cover plate 300. The arrangement of the dustproof cover can further avoid the contact of the material strip 400 with the outside when it is output from the liquid cooling tank 100, thereby avoiding the contamination of the material strip 400 by dust and improving the quality of the material strip 400.

[0070] As shown in Figure 1 and Figure 3 In the embodiment of the present application, the bottom of the liquid cooling tank 100 is provided with a liquid outlet 107, and the side wall of the liquid cooling tank 100 is provided with an overflow port 108. The overflow port 108 and the liquid outlet 107 are connected by the same connecting pipeline.

[0071] The position of the overflow port 108 is above the liquid level of the cooling liquid, but below the higher pressure roller 200 (i.e. the pressure roller 200 above the liquid level of the cooling liquid). The overflow port 108 is arranged to automatically control the liquid level in the liquid cooling tank 100. When the cooling liquid reaches a certain height, the excess liquid will be discharged through the overflow port 108 to prevent the liquid from overflowing out of the tank and to maintain the stability of the liquid level. At the same time, the cooling liquid at the high liquid level will not affect the higher pressure roller 200, and the material strip 400 can pass through the higher pressure roller 200 to separate from the cooling liquid, thereby ensuring the normal operation of the material strip 400 conveying work.

[0072] Here, the liquid cooling tank 100 is further provided with a liquid inlet 109 at the upper end of the liquid cooling tank 100, and the liquid outlet 107 is at the lower end of the liquid cooling tank 100. The overflow port 108 and the liquid outlet 107 are connected to the outside through the same connecting pipeline. This design can simplify the design and installation of the pipeline, reduce the material cost, and facilitate the later maintenance.

[0073] In some embodiments, the liquid cooling tank 100 is provided with a liquid level detection component 110. The liquid level detection component 110 can be a liquid level meter, which is used to detect the liquid level height in the liquid cooling tank 100.

[0074] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the application being indicated by the following claims.

[0075] It should be understood that the application is not limited to the precise construction that has been described above and illustrated in the accompanying drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The scope of the application is limited only by the appended claims.

Claims

1. An extruder for extruding a material strip (400), characterized in that: include: a liquid cooling tank (100) containing cooling liquid; At least two pressing rollers (200) are provided in the liquid cooling tank (100) to guide the material strip (400) through the liquid cooling tank (100); wherein, one of the at least two pressing rollers (200) is located above the liquid level of the cooling liquid, and the other of the at least two pressing rollers (200) is located below the liquid level of the cooling liquid; A dustproof cover plate (300) is detachably provided on the liquid cooling tank (100) so that the liquid cooling tank (100) forms a sealed chamber.

2. The extruder according to claim 1, characterized in that The pressure roller (200) has a plurality of parts; Along the conveying direction of the material strip (400), the pressing roller (200) above the liquid level of the cooling liquid is located downstream of the pressing roller (200) below the liquid level of the cooling liquid.

3. The extruder according to claim 1, characterized in that Along the conveying direction of the material strip (400), the position of the pressing roller (200) in the liquid cooling tank (100) is adjustable.

4. The extruder according to claim 3, characterized in that The opposite side walls of the liquid cooling tank (100) are respectively provided with sliding grooves (101), and the two ends of the pressure roller (200) are respectively provided with mounting seats (201), and the mounting seats (201) are limited and constrained in the sliding grooves (101) to constitute the sliding displacement of the pressure roller (200) in the liquid cooling tank (100); The mounting seat (201) and the slide groove (101) are engaged with each other to form a position-limiting fixation of the pressing roller (200) in the liquid cooling groove (100).

5. The extruder according to claim 4, characterized in that A fastener (202) is provided on the mounting seat (201). Under the action of an external force, the fastener (202) passes through the mounting seat (201) and presses against the slide groove (101) to form a limited fixation of the pressure roller (200) in the liquid cooling tank (100).

6. The extruder according to any one of claims 1 to 5, characterized in that The inlet end of the liquid cooling tank (100) is configured with a guide opening (103) opening upward, and the outlet end of the liquid cooling tank (100) is fixedly provided with a support frame (104), the support frame (104) extending along the conveying direction of the material strip (400), and the support frame (104) is provided with a conveying roller (105) for guiding the output of the material strip (400).

7. The extruder according to claim 6, characterized in that At least two conveying rollers (105) are spaced apart on the support frame (104), and the support frame (104) is provided with a wind knife (106). The wind knife (106) is located between the two conveying rollers (105), and the height of the wind knife (106) is lower than the height of the conveying rollers (105).

8. The extruder according to claim 7, characterized in that The support frame (104) is covered with a dust cover, and the dust cover covers the conveying roller (105) and the air knife (106).

9. The extruder according to any one of claims 1 to 5, characterized in that The bottom of the liquid cooling tank (100) is provided with a liquid outlet (107), and the side wall of the liquid cooling tank (100) is provided with an overflow port (108), and the overflow port (108) and the liquid outlet (107) are connected through the same connecting pipe.

10. The extruder according to any one of claims 1 to 5, characterized in that A liquid level detection component (110) is provided in the liquid cooling tank (100).

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