Thermoplastic polyurethane elastomer extruder

Abstract

The utility model discloses a thermoplastic polyurethane elastomer extruder, and particularly relates to the technical field of extruders, the thermoplastic polyurethane elastomer extruder comprises an extruder main body for manufacturing a thermoplastic polyurethane elastomer, the front end of the extruder main body is provided with a die assembly, the die assembly comprises a long plate, the front end of the long plate is provided with two circular grooves, and the long plate is provided with a screw. Extrusion heads for extruding thermoplastic polyurethane elastomers are arranged in the two circular grooves, extrusion holes are formed in the front ends of the two extrusion heads, a rotating rod fixedly penetrates through the center of the front end of the long plate, and the outer walls of the front end and the rear end of the rotating rod are movably sleeved with supporting plates. The gear motor drives the rotating rod to drive the long plate to rotate, the positions of the two extrusion heads can be automatically switched in the process of extruding the thermoplastic polyurethane elastomer, so that the extruded shapes of the thermoplastic polyurethane elastomer are different, meanwhile, when the two extrusion heads are switched, a worker can conveniently detach the extrusion heads to clean and replace, and the working efficiency is improved. Therefore, the applicability of the extruder main body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of extruders, in particular to a thermoplastic polyurethane elastomer extruder. Background Art

[0002] Thermoplastic polyurethane elastomer is a kind of elastic polymer material, which combines the plasticity of plastic and the elasticity of rubber. Thermoplastic polyurethane elastomer is a polyurethane segment and block copolymer generated by the reaction of polyol and polyisocyanate. It can be melted by heating and solidified after cooling. Thermoplastic polyurethane elastomer is widely used in many fields due to its excellent physical properties, such as wear resistance, tensile resistance, impact resistance, good weather resistance and chemical resistance. It is widely used in footwear, sports equipment, automotive parts, wires and cables, films, injection molded products, etc. In the production process of thermoplastic polyurethane elastomer, an extrusion die is installed at the extrusion port of the extruder to produce the required strip products.

[0003] For example, the prior art publication number is CN218453167U, which is a thermoplastic polyurethane elastomer rubber extruder. The utility model provides a hopper assembly to facilitate preheating of the material inside the hopper body, thereby reducing the heating time in the heating spiral extrusion barrel. The anti-blocking assembly is provided to facilitate smoother entry of the material into the heating spiral extrusion barrel through the hopper body.

[0004] However, the above-mentioned prior art still has the following problems when in use: the extrusion dies of most thermoplastic polyurethane elastomer extruders are usually installed by bolt fixing. Since the extruded thermoplastic polyurethane elastomers have different shapes, it is cumbersome to disassemble and assemble, and it is not convenient to quickly replace them. Based on this, the utility model provides a thermoplastic polyurethane elastomer extruder with which extrusion dies of different shapes can be quickly replaced. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a thermoplastic polyurethane elastomer extruder, which drives a rotating rod through a reduction motor to drive a long plate to rotate. During the process of extruding the thermoplastic polyurethane elastomer, the positions of two extrusion heads can be automatically switched, so that the shapes of the extruded thermoplastic polyurethane elastomer are different. At the same time, when the two extrusion heads are switched, it is convenient for the staff to disassemble the extrusion heads for cleaning and replacement, thereby improving the applicability of the extruder body to solve the problems arising from the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a thermoplastic polyurethane elastomer extruder, comprising an extruder body for manufacturing thermoplastic polyurethane elastomer, a mold assembly is provided at the front end of the extruder body, the mold assembly comprises a long plate, two circular grooves are provided at the front end of the long plate, extrusion heads for extruding thermoplastic polyurethane elastomer are provided in the two circular grooves, extrusion holes are provided at the front ends of the two extrusion heads, a rotating rod is fixedly penetrated at the center of the front end of the long plate, support plates are movably sleeved on the outer walls of the front and rear ends of the rotating rod, a reduction motor for driving the rotating rod to rotate is fixedly provided on the support plate located in front of the long plate, the rear end of the output shaft of the reduction motor penetrates the long plate and is fixed to the front end of the rotating rod, and a moving component for adjusting the position of the extrusion heads is fixedly provided at the front ends of the two extrusion heads.

[0007] In a preferred embodiment, the two moving components each include a plurality of electric push rods, and the plurality of electric push rods are fixedly disposed inside the long plate. A connecting plate is fixedly disposed at the front end of the piston rod of each electric push rod, and the connecting plate is fixed to the front end of the extrusion head. The position of the extrusion head is adjusted by the electric push rod, thereby realizing automatic adjustment of the position of the extrusion head.

[0008] In a preferred embodiment, a plurality of mounting grooves are provided at the front end of the long board, and a plurality of electric push rods are respectively fixed in the plurality of mounting grooves, so as to improve the stability of the electric push rods when in use.

[0009] In a preferred embodiment, rubber sealing rings are fixedly provided at the rear ends of the two extruder heads, an annular sealing groove is provided at the front end of the extruder body, and the rubber sealing ring is inserted into the annular sealing groove to improve the sealing between the extruder head and the extruder body.

[0010] In a preferred embodiment, a bracket is fixedly provided at the bottom end of the extruder body, and the bottom ends of two support plates are fixed to the top end of the bracket to improve the stability of the support plates.

[0011] In a preferred embodiment, a reinforcement seat for improving the stability of the reduction motor is fixed at the bottom end of the reduction motor, and the reinforcement seat is fixed to a support plate located in front of the long board. The reinforcement plate can further improve the stability of the reduction motor when in use.

[0012] Technical effects and advantages of the utility model:

[0013] The utility model drives the long plate to rotate by driving the rotating rod through a reduction motor, and can automatically switch the positions of the two extrusion heads during the process of extruding the thermoplastic polyurethane elastomer, so that the shapes of the extruded thermoplastic polyurethane elastomer are different. At the same time, when the two extrusion heads are switched, it is convenient for the staff to disassemble the extrusion heads for cleaning and replacement, so as to improve the applicability of the extruder main body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a side view of the overall structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the rotation of the longboard of the utility model;

[0017] Figure 4 It is a cross-sectional view of the long board of the utility model;

[0018] Figure 5 It is a cross-sectional view of the long plate of the present utility model.

[0019] The reference numerals are: 1, extruder body; 2, mold assembly; 3, rotating rod; 4, support plate; 5, reduction motor; 6, moving assembly; 7, mounting groove; 8, rubber sealing ring; 9, annular sealing groove; 10, bracket; 11, reinforcement seat;

[0020] 201, long plate; 202, circular groove; 203, extrusion head; 204, extrusion hole;

[0021] 601. Electric push rod; 602. Connecting plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Refer to the instruction manual Figure 1-Figure 5 The utility model provides a thermoplastic polyurethane elastomer extruder, comprising an extruder body 1 for manufacturing thermoplastic polyurethane elastomer, a mold assembly 2 is arranged at the front end of the extruder body 1, and the mold assembly 2 comprises a long plate 201, two circular grooves 202 are arranged at the front end of the long plate 201, and extrusion heads 203 for extruding thermoplastic polyurethane elastomer are arranged in the two circular grooves 202, and extrusion holes 204 are arranged at the front ends of the two extrusion heads 203, and a rotating rod 3 is fixedly penetrated at the center of the front end of the long plate 201, and the outer walls of the front and rear ends of the rotating rod 3 are movably sleeved with support plates 4, and a reduction motor 5 for driving the rotating rod 3 to rotate is fixed on the support plate 4 located in front of the long plate 201, and the rear end of the output shaft of the reduction motor 5 penetrates the long plate 201 and is fixed to the front end of the rotating rod 3;

[0024] The front ends of the two extrusion heads 203 are fixedly provided with a moving assembly 6 for adjusting the position of the extrusion heads 203. Specifically, the two moving assemblies 6 include a plurality of electric push rods 601, and the plurality of electric push rods 601 are fixedly provided inside the long plate 201. The front end of the piston rod of each electric push rod 601 is fixedly provided with a connecting plate 602, and the connecting plate 602 is fixed to the front end of the extrusion head 203. The position of the extrusion head 203 is adjusted by the electric push rod 601, so as to realize the automatic adjustment of the position of the extrusion head 203.

[0025] In addition, a plurality of mounting grooves 7 are provided at the front end of the long plate 201, and a plurality of electric push rods 601 are respectively fixed in the plurality of mounting grooves 7, so as to improve the stability of the electric push rods 601 when in use; a bracket 10 is fixedly provided at the bottom end of the extruder body 1, and the bottom ends of the two support plates 4 are fixed to the top end of the bracket 10, so as to improve the stability of the support plate 4; a reinforcement seat 11 is fixedly provided at the bottom end of the reduction motor 5, so as to improve the stability of the reduction motor 5; the reinforcement seat 11 is fixed to the support plate 4 located in front of the long plate 201, and the reinforcement plate can be used to further improve the stability of the reduction motor 5 when in use.

[0026] When in use, the staff selects the corresponding extrusion head 203 to be installed at the front end of the extruder body 1 according to the extrusion requirements of the thermoplastic polyurethane elastomer, and then adds the thermoplastic polyurethane elastomer material into the extruder body 1. The material is extruded through the extrusion head 203. When it is necessary to switch the shape of the thermoplastic polyurethane elastomer, the electric push rod 601 is first used to drive the extrusion head 203 to move out from the front end of the extruder body 1, and then the reduction motor 5 is used to drive the rotating rod 3 to drive the long plate 201 to rotate 180 degrees, so that the positions of the two extrusion heads 203 can be switched, and the thermoplastic polyurethane elastomer can continue to be extruded. At the same time, the staff can also disassemble, clean and replace the used extrusion head 203;

[0027] The shape of the extrusion hole 204 is not limited to the shape of the extrusion hole 204 in the present invention, and other shapes of the extrusion hole 204 may be replaced to meet the extrusion of thermoplastic polyurethane elastomers of different shapes, all of which are within the protection scope of the present invention.

[0028] Refer to the instruction manual Figure 1-Figure 5 The rear ends of the two extrusion heads 203 are fixed with rubber sealing rings 8, and the front end of the extruder body 1 is provided with an annular sealing groove 9. The rubber sealing ring 8 is inserted into the annular sealing groove 9 to improve the sealing between the extrusion head 203 and the extruder body 1.

[0029] The extrusion head 203 is connected to the electric push rod 601 through a connecting plate 602 and fixed with bolts, so that the staff can disassemble the extrusion head 203 for replacement, and a rubber sealing ring 8 is arranged between the extrusion head 203 and the extruder body 1. When the extrusion head 203 is tightly fitted with the front end of the extruder body 1, the rubber sealing ring 8 is plugged into the annular sealing groove 9, so that the sealing between the extrusion head 203 and the extruder body 1 can be improved. The structure is simple, and the applicability of the extrusion shape of the thermoplastic polyurethane elastomer is greatly improved.

[0030] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A thermoplastic polyurethane elastomer extruder, comprising an extruder body (1) for producing a thermoplastic polyurethane elastomer, characterized in that: The front end of the extruder body (1) is provided with a die assembly (2), the die assembly (2) comprising a long plate (201), the front end of the long plate (201) being provided with two circular grooves (202), the two circular grooves (202) being provided with extrusion heads (203) for extruding thermoplastic polyurethane elastomer, and the front ends of the two extrusion heads (203) being provided with extrusion holes (204); A rotating rod (3) is fixedly passed through the center of the front end of the long board (201); support plates (4) are movably sleeved on the outer walls of the front and rear ends of the rotating rod (3); a reduction motor (5) for driving the rotating rod (3) to rotate is fixedly provided on the support plate (4) located in front of the long board (201); the rear end of the output shaft of the reduction motor (5) passes through the long board (201) and is fixed to the front end of the rotating rod (3); A moving component (6) for adjusting the position of the extrusion heads (203) is fixedly provided at the front ends of the two extrusion heads (203).

2. A thermoplastic polyurethane elastomer extruder according to claim 1, characterized in that: The two moving assemblies (6) each comprise a plurality of electric push rods (601), each of the plurality of electric push rods (601) being fixedly arranged inside the long plate (201), and a connecting plate (602) being fixedly arranged at the front end of the piston rod of each electric push rod (601), and the connecting plate (602) being fixed to the front end of the extrusion head (203).

3. A thermoplastic polyurethane elastomer extruder according to claim 1, characterized in that: The front end of the long plate (201) is provided with a plurality of mounting grooves (7), and the plurality of electric push rods (601) are respectively fixed in the plurality of mounting grooves (7) to improve the stability of the electric push rods (601) when in use.

4. A thermoplastic polyurethane elastomer extruder according to claim 1, characterized in that: The rear ends of the two extrusion heads (203) are both fixedly provided with rubber sealing rings (8), the front end of the extruder body (1) is provided with an annular sealing groove (9), and the rubber sealing ring (8) is inserted into the annular sealing groove (9) to improve the sealing performance between the extrusion heads (203) and the extruder body (1).

5. A thermoplastic polyurethane elastomer extruder according to claim 1, characterized in that: A bracket (10) is fixedly provided at the bottom end of the extruder body (1), and the bottom ends of the two support plates (4) are fixed to the top ends of the bracket (10), so as to improve the stability of the support plates (4).

6. A thermoplastic polyurethane elastomer extruder according to claim 1, characterized in that: A reinforcement seat (11) for improving the stability of the reduction motor (5) is fixedly provided at the bottom end of the reduction motor (5), and the reinforcement seat (11) is fixed to a support plate (4) located in front of the long plate (201).

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