Ultralow-hardness thermoplastic elastomer extruder cutting device

Abstract

The utility model provides a cutting device of an ultra-low hardness thermoplastic elastomer extruder, which is mounted at an extrusion port of the extruder and comprises a mounting plate, a linear reciprocating actuator, a connecting rod, a cutting device and a control device, the mounting plate is mounted above the extrusion port of the extruder, one end of the linear reciprocating actuator is mounted on the mounting plate, and the other end of the linear reciprocating actuator is mounted on the connecting rod. The end, away from the linear reciprocating actuator, of the connecting rod is connected with the cutting device, and the linear reciprocating actuator is used for controlling the cutting device to do linear reciprocating motion on the plane where the extrusion opening is located so as to cut the ultra-low-hardness thermoplastic elastomer extruded out of the extrusion opening. The linear reciprocating actuator is electrically connected with the control device, and the problems that in the prior art, due to the fact that ultra-low-hardness thermoplastic elastomers extruded by an extruder are cut in a manual mode, the cutting labor intensity is large, the efficiency is low, the cutting precision is poor, and workers are scalded due to the fact that the material temperature is high and operation is improper are solved.

Description

A cutting device for an ultra-low hardness thermoplastic elastomer extruder Technical Field

[0001] This utility model relates to the field of material forming technology, and in particular to a cutting device for an ultra-low hardness thermoplastic elastomer extruder. Background Technology

[0002] In the production of ultra-low hardness thermoplastic elastomers, extruders are commonly used processing equipment to extrude molten plastic raw materials into rod-shaped strips through a die. After extrusion molding, the continuous rod-shaped strips usually need to be cut to a certain length for subsequent packaging, transportation, and use.

[0003] Currently, some small and medium-sized manufacturing enterprises still use manual methods to cut the molded ultra-low hardness thermoplastic elastomers in order to reduce production costs. This cutting method is not only labor-intensive, inefficient, and has poor cutting accuracy, but also poses a safety hazard of workers being burned due to the high temperature of the ultra-low hardness thermoplastic elastomer and improper operation. Summary of the Invention

[0004] The purpose of this application is to provide a cutting device for an ultra-low hardness thermoplastic elastomer extruder, which solves the technical problems in the prior art where cutting ultra-low hardness thermoplastic elastomers extruded by the extruder is done manually. This not only results in high labor intensity, low efficiency, and poor cutting accuracy, but also poses a safety hazard of burns to workers due to the high temperature of the ultra-low hardness thermoplastic elastomer and improper operation.

[0005] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0006] A cutting device for an ultra-low hardness thermoplastic elastomer extruder is installed at the extrusion port of the extruder and includes a mounting plate, a linear reciprocating actuator, a connecting rod, a cutting device, and a control device.

[0007] The mounting plate is installed on the extruder and is located above the extrusion nozzle;

[0008] One end of the linear reciprocating actuator is mounted on the mounting plate, and the other end passes through the mounting plate and is connected to the connecting rod. The end of the connecting rod away from the linear reciprocating actuator is connected to the cutting device. The linear reciprocating actuator is used to control the cutting device to perform linear reciprocating motion in the plane where the extrusion is located to cut the ultra-low hardness thermoplastic elastomer extruded from the extrusion.

[0009] The linear reciprocating actuator is electrically connected to the control device.

[0010] In the ultra-low hardness thermoplastic elastomer extruder cutting device described in the embodiments of this application, the mounting plate is provided with at least two spaced mounting holes and at least two mounting bolts, each mounting bolt is connected to one of the mounting holes, and the mounting plate is mounted on the extruder through the mounting holes and the mounting bolts.

[0011] In the ultra-low hardness thermoplastic elastomer extruder cutting device described in the embodiments of this application, the mounting hole is a waist-shaped hole.

[0012] In the ultra-low hardness thermoplastic elastomer extruder cutting device described in the embodiments of this application, the cutting device includes a connecting block and an annular cutter;

[0013] The connecting block is connected to the connecting rod, and the annular cutter is connected to the end of the connecting block away from the connecting rod. Both the inner and outer sides of the end away from the connecting block are sharpened.

[0014] In the ultra-low hardness thermoplastic elastomer extruder cutting device described in this application embodiment, the connecting block is provided with an external thread, and the end of the connecting rod connected to the connecting block is provided with an internal thread. The connecting block and the connecting rod are detachably connected through the external thread and the internal thread.

[0015] In the cutting device of an ultra-low hardness thermoplastic elastomer extruder described in the embodiments of this application, the connecting block is threaded with an anti-loosening nut.

[0016] The ultra-low hardness thermoplastic elastomer extruder cutting device described in the embodiments of this application further includes a guiding assembly, which includes a T-shaped guide groove, a T-shaped guide block, and a pulley;

[0017] The T-shaped guide groove is installed on the extruder and located at both ends of the extrusion port. The T-shaped guide block is disposed at the end of the annular cutter facing the extrusion port and is slidably connected to the T-shaped guide groove. The pulley is rotatably connected to the end of the T-shaped guide block facing the T-shaped guide groove.

[0018] In the ultra-low hardness thermoplastic elastomer extruder cutting device described in the embodiments of this application, the annular cutter is provided with a TiN coating.

[0019] In the ultra-low hardness thermoplastic elastomer extruder cutting device described in the embodiments of this application, at least two support rods are provided at the bottom end of the mounting plate, and the end of the support rod away from the mounting plate is connected to the extruder.

[0020] In the ultra-low hardness thermoplastic elastomer extruder cutting device described in the embodiments of this application, the linear reciprocating actuator is one of a cylinder, a linear motor, or a push-pull electromagnet.

[0021] Compared with the prior art, the embodiments of this application have the following beneficial effects:

[0022] As can be seen from the above technical solution, the ultra-low hardness thermoplastic elastomer extruder cutting device provided in this application embodiment, by setting an installation plate on the extrusion port, and setting a linear reciprocating actuator on the installation plate, the linear reciprocating actuator is connected to the cutting device through a connecting rod. The linear reciprocating actuator controls the cutting device to perform linear reciprocating motion to cut the ultra-low hardness thermoplastic elastomer extruded from the extrusion port, reducing the labor intensity of cutting ultra-low hardness thermoplastic elastomer, improving cutting efficiency, effectively avoiding worker burns, and because the extrusion rate of the extruder is fixed, the execution cycle of the linear reciprocating actuator is precisely controlled by the control device, improving the cutting accuracy of ultra-low hardness thermoplastic elastomer. This solves the technical problem in the prior art that cutting ultra-low hardness thermoplastic elastomer extruded by the extruder manually not only leads to high labor intensity, low efficiency, and poor cutting accuracy, but also poses a safety hazard of worker burns due to the high temperature of the ultra-low hardness thermoplastic elastomer and improper operation. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. The drawings are not intended to be drawn to scale, and for clarity, not every component will be labeled in each drawing. The drawings described below are merely some embodiments of this application. Those skilled in the art can obtain other drawings based on these drawings without creative effort. Wherein:

[0024] Figure 1 is a structural schematic diagram of an embodiment of this application.

[0025] Figure 2 is a magnified view of part A in Figure 1.

[0026] Figure 3 is a schematic diagram of the mounting plate in an embodiment of this application.

[0027] Figure 4 is a schematic diagram of the structure of the circumferential cutter in the embodiment of this application.

[0028] Figure 5 is a cross-sectional view of the guide component in an embodiment of this application.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1-Extruder, 2-Mounting plate, 3-Linear reciprocating actuator, 4-Connecting rod, 5-Mounting hole, 6-Mounting bolt, 7-Connecting block, 8-Annular cutter, 9-External thread, 10-Anti-loosening nut, 11-T-shaped guide groove, 12-T-shaped guide block, 13-Pulley, 14-Support rod. Detailed Implementation

[0031] Currently, some small and medium-sized manufacturing enterprises still use manual methods to cut the molded ultra-low hardness thermoplastic elastomers in order to reduce production costs. This cutting method is not only labor-intensive, inefficient, and has poor cutting accuracy, but also poses a safety hazard of workers being burned due to the high temperature of the ultra-low hardness thermoplastic elastomer and improper operation.

[0032] In view of this, this application provides a cutting device for an ultra-low hardness thermoplastic elastomer extruder. The concept involves setting a mounting plate on the extrusion nozzle, with a linear reciprocating actuator mounted on the mounting plate. The linear reciprocating actuator is connected to a cutting device via a connecting rod. The linear reciprocating actuator controls the cutting device to perform linear reciprocating motion to cut the ultra-low hardness thermoplastic elastomer extruded from the nozzle. This reduces the labor intensity of cutting ultra-low hardness thermoplastic elastomers, improves cutting efficiency, and effectively avoids worker burns. Furthermore, since the extrusion rate of the extruder is fixed, the execution cycle of the linear reciprocating actuator is precisely controlled by the control device, improving the cutting accuracy of the ultra-low hardness thermoplastic elastomer. This solves the technical problems of existing technologies where manual cutting of ultra-low hardness thermoplastic elastomers not only results in high labor intensity, low efficiency, and poor cutting accuracy, but also poses safety hazards such as worker burns due to the high temperature of the ultra-low hardness thermoplastic elastomer and improper operation.

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0034] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0038] This application provides a cutting device for an ultra-low hardness thermoplastic elastomer extruder, as shown in Figures 1 to 5. The cutting device for an ultra-low hardness thermoplastic elastomer extruder is installed at the extrusion port of the extruder 1 and includes a mounting plate 2, a linear reciprocating actuator, a connecting rod, a cutting device, and a control device.

[0039] The control device may be a control device that is present in the extruder 1 itself.

[0040] The mounting plate 2 is mounted on the extruder 1 and is located above the extrusion port.

[0041] Specifically, the mounting plate 2 is provided with at least two spaced mounting holes and at least two mounting bolts 6, each mounting bolt 6 is connected to one of the mounting holes, and the mounting plate 2 is mounted on the extruder 1 through the mounting holes and the mounting bolts 6.

[0042] By providing at least two mounting holes, the installation stability of the mounting plate 2 is improved, preventing the mounting plate 2 from shifting due to vibration during use, which would affect the stability and accuracy of cutting.

[0043] One end of the linear reciprocating actuator is mounted on the mounting plate 2, and the other end passes through the mounting plate 2 and is connected to the connecting rod. The end of the connecting rod away from the linear reciprocating actuator is connected to the cutting device. The linear reciprocating actuator is used to control the cutting device to perform linear reciprocating motion on the plane where the extrusion port is located to cut the ultra-low hardness thermoplastic elastomer extruded from the extrusion port. The linear reciprocating actuator is electrically connected to the control device.

[0044] Specifically, the linear reciprocating actuator can be a cylinder, a linear motor, or a push-pull electromagnet. In this embodiment, the linear reciprocating actuator is a cylinder. The cutting device includes a connecting block 7 and an annular cutter 8. The connecting block 7 is connected to the connecting rod, and the annular cutter 8 is connected to the end of the connecting block 7 away from the connecting rod. Both the inner and outer sides of the end away from the connecting block 7 are sharpened.

[0045] In this embodiment, the extrusion port is horizontal and angled downwards, and the mounting plate 2 is a bent plate, so that the annular cutter 8 can cut the ultra-low hardness thermoplastic elastomer perpendicular to the extrusion direction of the ultra-low hardness thermoplastic elastomer. The annular cutter 8 is a rectangular ring, and both the inner and outer sides of the end of the annular cutter 8 away from the connecting block 7 are sharpened. This is intended to "sharpen" both the inner and outer sides of the end of the annular cutter 8 away from the connecting block 7, increase its sharpness, and facilitate the cutting of the ultra-low hardness thermoplastic elastomer by the annular cutter 8.

[0046] In some preferred embodiments, the mounting hole is an oblong hole. By setting the mounting hole to an oblong shape, it is easier to adjust the installation position of the mounting plate 2, thereby improving the applicability of the embodiments of this application.

[0047] In some preferred embodiments, the connecting block 7 is provided with an external thread 9, and the end of the connecting rod connected to the connecting block 7 is provided with an internal thread. The connecting block 7 and the connecting rod are detachably connected through the external thread 9 and the internal thread.

[0048] The detachable connection between the connecting block 7 and the connecting rod facilitates the replacement of the annular cutter 8 when its sharpness is insufficient or when a large amount of molten plastic remains on the annular cutter 8, affecting the cutting of the ultra-low hardness thermoplastic elastomer.

[0049] In some preferred embodiments, the connecting block 7 is threaded with an anti-loosening nut 10. By setting the anti-loosening nut 10, the stability of the threaded connection between the connecting block 7 and the connecting rod is increased, thereby effectively preventing the annular cutter 8 from loosening.

[0050] In some preferred embodiments, a guide assembly is also included, which includes a T-shaped guide groove 11, a T-shaped guide block 12, and a pulley 13. The T-shaped guide groove 11 is mounted on the extruder 1 and located at both ends of the extrusion port. The T-shaped guide block 12 is disposed at one end of the annular cutter 8 facing the extrusion port and is slidably connected to the T-shaped guide groove 11. The pulley 13 is rotatably connected to one end of the T-shaped guide block 12 facing the T-shaped guide groove 11.

[0051] Specifically, there are two T-shaped guide grooves 11, which are arranged in parallel at the left and right ends of the extrusion port, and their axial direction is the same as the traveling direction of the annular cutter 8. There are two T-shaped guide blocks 12, which are arranged in parallel at the two ends of the annular cutter 8 that are perpendicular to the traveling direction of the annular cutter 8.

[0052] By setting the guide component, the annular cutter 8 is prevented from shaking during linear reciprocating motion, thereby improving the accuracy of the annular cutter 8 in cutting ultra-low hardness thermoplastic elastomers.

[0053] In some preferred embodiments, the annular cutter 8 is provided with a TiN coating. By providing the TiN coating, the wear resistance of the annular cutter 8 is improved and the adhesion of molten plastic on the annular cutter 8 is reduced.

[0054] In some preferred embodiments, the bottom end of the mounting plate 2 is provided with at least two support rods 14, and the end of the support rod 14 away from the mounting plate 2 is connected to the extruder 1. By providing the support rods 14, the stability of the mounting plate 2 is improved, the vibration of the mounting plate 2 is effectively prevented, and the accuracy of cutting plastic hoses in this application is improved.

[0055] In summary, the cutting device for an ultra-low hardness thermoplastic elastomer extruder provided in this application embodiment reduces the labor intensity of cutting ultra-low hardness thermoplastic elastomers, improves cutting efficiency, and effectively avoids worker burns by setting an installation plate on the extrusion port and mounting a linear reciprocating actuator on the installation plate. The linear reciprocating actuator is connected to the cutting device through a connecting rod. The linear reciprocating actuator controls the cutting device to perform linear reciprocating motion to cut the ultra-low hardness thermoplastic elastomer extruded from the extrusion port. Furthermore, since the extrusion rate of the extruder is fixed, the execution cycle of the linear reciprocating actuator can be precisely controlled by the control device, improving the cutting accuracy of the ultra-low hardness thermoplastic elastomer. This solves the technical problems in the prior art where cutting ultra-low hardness thermoplastic elastomers extruded by the extruder by manual means not only results in high labor intensity, low efficiency, and poor cutting accuracy, but also poses a safety hazard of worker burns due to the high temperature of the ultra-low hardness thermoplastic elastomer and improper operation.

[0056] The above provides a detailed description of the ultra-low hardness thermoplastic elastomer extruder cutting device and its preparation method provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A cutting device for an ultra-low hardness thermoplastic elastomer extruder, installed at the extrusion nozzle of the extruder, characterized in that, The device includes a mounting plate, a linear reciprocating actuator, a connecting rod, a cutting device, and a control device. The mounting plate is mounted on the extruder and located above the extrusion nozzle. One end of the linear reciprocating actuator is mounted on the mounting plate, and the other end passes through the mounting plate and is connected to the connecting rod. The end of the connecting rod away from the linear reciprocating actuator is connected to the cutting device. The linear reciprocating actuator controls the cutting device to perform linear reciprocating motion in the plane of the extrusion nozzle to cut the plastic hose extruded from the extrusion nozzle. The linear reciprocating actuator is electrically connected to the control device.

2. The cutting device for an ultra-low hardness thermoplastic elastomer extruder as described in claim 1, characterized in that, The mounting plate is provided with at least two spaced mounting holes and at least two mounting bolts. Each mounting bolt is connected to one of the mounting holes, and the mounting plate is mounted on the extruder through the mounting holes and the mounting bolts.

3. The cutting device for an ultra-low hardness thermoplastic elastomer extruder as described in claim 2, characterized in that, The mounting hole is a waist-shaped hole.

4. The cutting device for an ultra-low hardness thermoplastic elastomer extruder as described in claim 1, characterized in that, The cutting device includes a connecting block and an annular cutter; the connecting block is connected to the connecting rod, and the annular cutter is connected to the end of the connecting block away from the connecting rod, with both the inner and outer sides of the end away from the connecting block being sharpened.

5. The cutting device for an ultra-low hardness thermoplastic elastomer extruder as described in claim 4, characterized in that, The connecting block is provided with an external thread, and the end of the connecting rod that is connected to the connecting block is provided with an internal thread. The connecting block and the connecting rod are detachably connected through the external thread and the internal thread.

6. The cutting device for an ultra-low hardness thermoplastic elastomer extruder as described in claim 4, characterized in that, The connecting block is threaded with an anti-loosening nut.

7. The cutting device for an ultra-low hardness thermoplastic elastomer extruder as described in claim 4, characterized in that, It also includes a guide assembly, which includes a T-shaped guide groove, a T-shaped guide block, and a pulley; the T-shaped guide groove is installed on the extruder and located at both ends of the extrusion port; the T-shaped guide block is disposed at the end of the annular cutter facing the extrusion port and is slidably connected to the T-shaped guide groove; and the pulley is rotatably connected to the end of the T-shaped guide block facing the T-shaped guide groove.

8. The cutting device for an ultra-low hardness thermoplastic elastomer extruder as described in claim 4, characterized in that, The annular cutter is coated with a TiN coating.

9. The cutting device for an ultra-low hardness thermoplastic elastomer extruder as described in claim 1, characterized in that, The mounting plate has at least two support rods at its bottom end, and the end of the support rods away from the mounting plate is connected to the extruder.

10. The cutting device for an ultra-low hardness thermoplastic elastomer extruder as described in claim 1, characterized in that, The linear reciprocating actuator is one of a cylinder, a linear motor, or a push-pull electromagnet.

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