A softening device for producing thermoplastic polyurethane elastomer

Abstract

The utility model discloses a softening device for thermoplastic polyurethane elastomer production, specifically relates to the technical field of softening devices, including a softening tank, a pulverizer, the pulverizer is fixed at the top of the softening tank and is connected to the inside of the softening tank, and is used to pulverize the elastomer raw material, and a blowing component, the blowing component includes two blowing pipes, the two blowing pipes are respectively fixed and penetrate through the two sides of the softening tank and are connected to the inside of the softening tank, and the two blowing pipes are provided with fan blades and multiple electric heating rods, and the multiple electric heating rods are all arranged on the inner side of the fan blades. The utility model pulverizes the elastomer raw material by the pulverizer, thereby improving the efficiency of the subsequent softening of the elastomer raw material, and at the same time uses the pulverizer and the connecting component to drive the two fan blades to rotate and blow air, thereby reducing the use cost, and the air heats and softens the fragments after passing through the electric heating rod, and the material box and the stirring paddle rotate while spraying the softener for stirring, and the softening efficiency of the fragments is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of softening devices, in particular to a softening device for producing thermoplastic polyurethane elastomers. Background Art

[0002] Thermoplastic polyurethane elastomer is a thermoplastic material with rubber properties, which combines the advantages of traditional plastics and rubber. It is widely used in industrial and consumer products. When producing thermoplastic polyurethane elastomer, special equipment is required for processing, such as softening devices, mixers, extruders and injection molding machines, etc. Among them, the thermoplastic polyurethane elastomer softening device is a device used to heat solid or semi-solid raw materials to a softened state for further processing and molding.

[0003] For example, the prior art publication number CN219338240U is a softening device for the production of thermoplastic polyurethane elastomer rubber. The utility model drives the first rotating shaft and the fourth rotating shaft to rotate through the third motor 2, and then drives the first tool and the second tool to rotate. The first tool and the second tool are staggered to achieve the effect of crushing larger pieces of rubber and accelerating the softening efficiency and speed.

[0004] However, the above-mentioned prior art still has the following problems when in use: the crushed fragments are filtered through the filter plate. Although the filter plate can shake, once the number of fragments in the machine body is too large, the filter plate will still be blocked, thereby affecting the softening efficiency of the fragments, and manual cleaning is required. Based on this, the utility model provides a softening device for the production of thermoplastic polyurethane elastomers with high softening efficiency. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a softening device for the production of thermoplastic polyurethane elastomers. The elastomer raw material is crushed by a crusher, so that the efficiency of the subsequent softening of the elastomer raw material can be improved. At the same time, the crusher and the connecting assembly are used to drive two fan blades to rotate and blow air, so that the use cost can be reduced. The air is heated and softened after passing through the electric heating rod, and the material box and the stirring paddle rotate while spraying a softener for stirring, so that the softening efficiency of the fragments is greatly improved, so as to solve the problems arising from the above-mentioned background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a softening device for producing thermoplastic polyurethane elastomer, comprising a softening tank and a pulverizer, wherein the pulverizer is fixed on the top of the softening tank and is connected to the inside of the softening tank, and is used to pulverize the elastomer raw material;

[0007] A blowing assembly, wherein the blowing assembly comprises two blowing pipes, the two blowing pipes are respectively fixed and penetrate through both sides of the softening tank and are connected to the inside of the softening tank, the two blowing pipes are provided with fan blades and a plurality of electric heating rods, the plurality of electric heating rods are arranged inside the fan blades, and are used to blow hot air to heat and soften the elastomer raw material, and the two fan blades are connected to the pulverizer through a connecting assembly;

[0008] The material spreading component includes a material box, a discharge pipe is fixedly passed through the bottom end of the material box, the discharge pipe is connected with the inside of the material box, and a softener is stored in the material box for accelerating the softening efficiency of the elastomer raw material.

[0009] In a preferred embodiment, a stirring paddle is fixedly provided at the center of the bottom end of the material box, a sealing cover is provided on the stirring paddle, an opening is provided at the bottom end of the softening tank, the sealing cover is arranged in the opening, a second motor is fixedly embedded at the bottom end of the sealing cover, and the top end of the output shaft of the second motor is fixed to the bottom end of the stirring paddle, so as to drive the stirring paddle and the material box to rotate.

[0010] In a preferred embodiment, the material box is arranged between two blowing pipes, a solenoid valve is fixedly provided on the discharge pipe, a battery compartment is fixedly embedded on the material box, and a rechargeable battery for powering the solenoid valve is arranged in the battery compartment.

[0011] In a preferred embodiment, the crusher includes a crushing box, in which two crushing rollers are arranged, the rear ends of the two crushing rollers both pass through the rear end of the crushing box, the two crushing rollers are meshed by gears, a motor is fixedly arranged at the rear end of the crushing box, and the output shaft of the motor is fixed to one of the crushing rollers.

[0012] In a preferred embodiment, the connecting assembly includes a bracket, which is fixed at the rear end of the softening tank. A rotating rod 1 is rotatably provided in the bracket, and a rotating rod 2 is rotatably provided in front of the rotating rod 1 and is rotatably provided at the rear end of the softening tank. The rotating rod 1 and the rotating rod 2 are both fixedly sleeved with meshing bevel gears, and the rotating rod 1 and the rotating rod 2 are connected by the bevel gears, so as to facilitate the rotation of the two fan blades.

[0013] In a preferred embodiment, the rotating rod 2 and the output shaft of the motor 1, and the rotating rod 1 and the two fan blades are connected through a belt transmission assembly to drive the two fan blades to rotate simultaneously.

[0014] In a preferred embodiment, support legs are fixedly provided on both sides of the softening tank, and an electric slide is fixedly embedded on one side of the two support legs close to each other. The two electric slides are fixed to the sealing cover to drive the sealing cover to rise and fall.

[0015] In a preferred embodiment, a discharge pipe is fixedly penetrated on one side of the bottom end of the sealing cover, the top end of the discharge pipe is connected to the interior of the softening tank, a control valve is fixedly provided on the discharge pipe, and two filter plates are fixedly provided inside the two blowing pipes, the two filter plates are respectively arranged on both sides of the fan blades and the electric heating rod, and one of the filter plates is sleeved on the fan blades.

[0016] Technical effects and advantages of the utility model:

[0017] The utility model uses a grinder to grind the elastomer raw material, so as to improve the efficiency of subsequent softening of the elastomer raw material. At the same time, the grinder and the connecting component are used to drive two fan blades to rotate and blow air, so as to reduce the use cost. The air is heated and softened after passing through the electric heating rod, and the material box and the stirring paddle rotate while spraying the softener for stirring, so the softening efficiency of the fragments is greatly improved.

[0018] By setting the sealing cover to be liftable, the staff can clean the debris remaining inside the softening tank, clean the material box, stirring paddle and sealing cover at the same time, and can also add softener to the material box and replace the rechargeable battery in the battery compartment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a cross-sectional view of the softening tank of the utility model;

[0021] Figure 3 This is a structural diagram of the sealing cover and softening tank of the utility model;

[0022] Figure 4 It is a schematic diagram of the connection assembly of the utility model;

[0023] Figure 5 It is a cross-sectional view of the blowing pipe of the utility model.

[0024] The reference numerals are: 1, softening tank; 2, crusher; 3, blowing assembly; 4, connecting assembly; 5, spreading assembly; 6, solenoid valve; 7, supporting leg; 8, electric slide; 9, discharge pipe; 10, control valve;

[0025] 201, crushing box; 202, crushing roller; 203, gear; 204, motor 1;

[0026] 301, blowpipe; 302, fan blade; 303, electric heating rod; 304, filter plate;

[0027] 401, bracket; 402, rotating rod 1; 403, rotating rod 2; 404, bevel gear; 405, belt drive assembly;

[0028] 501, material box; 502, discharge pipe; 503, stirring paddle; 504, sealing cover; 505, motor 2. DETAILED DESCRIPTION

[0029] 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.

[0030] Refer to the attached drawings in the specification Figure 1-Figure 5 The utility model provides a softening device for thermoplastic polyurethane elastomer production, including a softening tank 1 and a pulverizer 2. The pulverizer 2 is fixed at the top of the softening tank 1 and communicated with the inside of the softening tank 1, and is used to pulverize the elastomer raw material. Specifically, the pulverizer 2 includes a pulverizing box 201, and two pulverizing rollers 202 are arranged in the pulverizing box 201. The rear ends of the two pulverizing rollers 202 both penetrate the rear end of the pulverizing box 201, and the two pulverizing rollers 202 are meshed through a gear 203. A motor 204 is fixed at the rear end of the pulverizing box 201, and the output shaft of the motor 204 is fixed to one of the pulverizing rollers 202.

[0031] A blowing assembly 3, wherein the blowing assembly 3 comprises two blowing pipes 301, the two blowing pipes 301 are respectively fixedly passed through both sides of the softening tank 1 and are connected to the inside of the softening tank 1, the two blowing pipes 301 are both provided with fan blades 302 and a plurality of electric heating rods 303, the plurality of electric heating rods 303 are all arranged on the inner side of the fan blades 302, and are used to blow hot air to heat and soften the elastomer raw material, the two blowing pipes 301 are both fixedly provided with two filter plates 304, the two filter plates 304 are respectively arranged on both sides of the fan blades 302 and the electric heating rods 303, and one of the filter plates 304 is sleeved on the fan blades 302, and the two fan blades 302 are connected to the pulverizer 2 through the connecting assembly 4;

[0032] Specifically, the connecting assembly 4 includes a bracket 401, the bracket 401 is fixed at the rear end of the softening tank 1, a rotating rod 1 402 is rotatably provided in the bracket 401, a rotating rod 2 403 rotatably provided at the rear end of the softening tank 1 is provided in front of the rotating rod 1 402, and the rotating rod 1 402 and the rotating rod 2 403 are both fixedly sleeved with meshing bevel gears 404, and the rotating rod 1 402 and the rotating rod 2 403 are connected by the bevel gear 404 to facilitate the rotation of the two fan blades 302, and the rotating rod 2 403 and the output shaft of the motor 1 204, and the rotating rod 1 402 and the two fan blades 302 are connected by a belt transmission assembly 405, which is used to drive the two fan blades 302 to rotate simultaneously;

[0033] A material spreading component 5, the material spreading component 5 comprises a material box 501, a discharge pipe 502 is fixedly passed through the bottom end of the material box 501, the discharge pipe 502 is connected with the inside of the material box 501, a softener is stored in the material box 501, the material box 501 is arranged between two blowing pipes 301, a solenoid valve 6 is fixedly provided on the discharge pipe 502, a battery compartment is fixedly embedded on the material box 501, and a rechargeable battery for powering the solenoid valve 6 is provided in the battery compartment;

[0034] In addition, a stirring paddle 503 is fixedly provided at the center of the bottom end of the material box 501, and a sealing cover 504 is sleeved on the stirring paddle 503. An opening is opened at the bottom end of the softening tank 1, and the sealing cover 504 is arranged in the opening. A motor 2 505 is fixedly embedded at the bottom end of the sealing cover 504, and the top end of the output shaft of the motor 2 505 is fixed to the bottom end of the stirring paddle 503, so as to drive the stirring paddle 503 and the material box 501 to rotate.

[0035] When in use, first pour the elastomer raw material into the pulverizer 2, and use the pulverizer 2 to crush the large pieces of elastomer raw material into fragments, so as to improve the efficiency of subsequent softening. While the pulverizer 2 is in operation, the belt drive assembly 405, the second rotating rod 403, the first rotating rod 402, the bevel gear 404 and the second belt drive assembly 406 in the bracket 401 drive the two fan blades 302 to rotate and blow air. The air is heated by multiple electric heating rods and then transported to the softening tank 1 to heat and soften the fragments. At the same time, the second motor 505 is used to drive the stirring paddle 503 and the material box 501 to rotate, and the solenoid valve 6 is opened. Under the action of centrifugal force, the softener in the material box 501 is evenly sprinkled on the fragments, and is fully mixed with the fragments under the stirring and mixing of the stirring paddle 503, thereby greatly accelerating the softening efficiency of the fragments.

[0036] Refer to the attached drawings in the specification Figure 1-Figure 5 The softening tank 1 is fixed with support legs 7 on both sides, and an electric slide 8 is fixedly embedded on the side close to the two support legs 7. The two electric slides 8 are fixed to the sealing cover 504 to drive the sealing cover 504 to rise and fall;

[0037] In addition, a discharge pipe 9 is fixedly passed through one side of the bottom end of the sealing cover 504 , the top end of the discharge pipe 9 is connected to the inside of the softening tank 1 , and a control valve 10 is fixedly provided on the discharge pipe 9 for controlling the opening and closing of the discharge pipe 9 .

[0038] After the softened broken pieces are discharged through the discharge pipe 9, the staff can use the two electric slides 8 to drive the sealing cover 504 to descend, so that the bottom opening of the softening tank 1 is opened, which is convenient for the staff to fully clean the broken pieces remaining inside the softening tank 1, and clean the material box 501, the stirring paddle 503 and the sealing cover 504 at the same time, and can also add softener to the material box 501 and replace the rechargeable battery in the battery compartment.

[0039] 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 softening device for producing thermoplastic polyurethane elastomer, comprising a softening tank (1), characterized in that: Also includes, A pulverizer (2), the pulverizer (2) being fixed to the top of the softening tank (1) and being connected to the inside of the softening tank (1), and being used for pulverizing the elastomer raw material; A blowing assembly (3), the blowing assembly (3) comprising two blowing pipes (301), the two blowing pipes (301) being fixedly connected to both sides of the softening tank (1) and being connected to the inside of the softening tank (1), the two blowing pipes (301) being provided with fan blades (302) and a plurality of electric heating rods (303), the plurality of electric heating rods (303) being arranged inside the fan blades (302) and being used for blowing hot air to heat and soften the elastomer raw material, the two fan blades (302) being connected to the pulverizer (2) via a connecting assembly (4); A material spreading assembly (5), the material spreading assembly (5) comprising a material box (501), a material discharge pipe (502) fixedly passing through the bottom end of the material box (501), the material discharge pipe (502) being connected to the inside of the material box (501), and a softener stored in the material box (501) for accelerating the softening efficiency of the elastomer raw material.

2. A softening device for producing thermoplastic polyurethane elastomer according to claim 1, characterized in that: A stirring paddle (503) is fixedly provided at the center of the bottom end of the material box (501), a sealing cover (504) is sleeved on the stirring paddle (503), an opening is opened at the bottom end of the softening tank (1), the sealing cover (504) is arranged in the opening, a second motor (505) is fixedly embedded at the bottom end of the sealing cover (504), and the top end of the output shaft of the second motor (505) is fixed to the bottom end of the stirring paddle (503) for driving the stirring paddle (503) and the material box (501) to rotate.

3. A softening device for producing thermoplastic polyurethane elastomer according to claim 1, characterized in that: The material box (501) is arranged between the two blowing pipes (301), a solenoid valve (6) is fixedly provided on the material discharge pipe (502), a battery compartment is fixedly embedded in the material box (501), and a rechargeable battery for supplying power to the solenoid valve (6) is arranged in the battery compartment.

4. A softening device for producing thermoplastic polyurethane elastomer according to claim 1, characterized in that: The pulverizer (2) comprises a pulverizing box (201), wherein two pulverizing rollers (202) are arranged in the pulverizing box (201), the rear ends of the two pulverizing rollers (202) both penetrate the rear end of the pulverizing box (201), the two pulverizing rollers (202) are meshed with each other via a gear (203), a motor 1 (204) is fixedly arranged at the rear end of the pulverizing box (201), and the output shaft of the motor 1 (204) is fixed to one of the pulverizing rollers (202).

5. A softening device for producing thermoplastic polyurethane elastomer according to claim 4, characterized in that: The connecting assembly (4) comprises a bracket (401), the bracket (401) being fixed at the rear end of the softening tank (1), a rotating rod (402) being rotatably disposed in the bracket (401), a rotating rod (403) being rotatably disposed at the rear end of the softening tank (1) being disposed in front of the rotating rod (402), and a meshing bevel gear (404) being fixedly sleeved on the rotating rod (402) and the rotating rod (403).

6. A softening device for producing thermoplastic polyurethane elastomer according to claim 5, characterized in that: The second rotating rod (403) and the output shaft of the first motor (204), as well as the first rotating rod (402) and the two fan blades (302) are connected via a belt transmission assembly (405) for driving the two fan blades (302) to rotate simultaneously.

7. A softening device for producing thermoplastic polyurethane elastomer according to claim 2, characterized in that: Support legs (7) are fixedly provided on both sides of the softening tank (1), and an electric slide (8) is fixedly embedded on the side where the two support legs (7) are close to each other. The two electric slides (8) are fixed to the sealing cover (504) and are used to drive the sealing cover (504) to rise and fall.

8. A softening device for producing thermoplastic polyurethane elastomer according to claim 2, characterized in that: A discharge pipe (9) is fixedly provided through one side of the bottom end of the sealing cover (504), the top end of the discharge pipe (9) is connected to the inside of the softening tank (1), a control valve (10) is fixedly provided on the discharge pipe (9), and two filter plates (304) are fixedly provided inside the two blowing pipes (301), the two filter plates (304) are respectively provided on both sides of the fan blade (302) and the electric heating rod (303), and one of the filter plates (304) is sleeved on the fan blade (302).

Images