Double-screw melt extrusion device

Abstract

The utility model discloses a twin-screw melt extrusion device, relates to non-woven fabric manufacturing technical field, including melt charging barrel and grinding box, the left side of melt charging barrel is fixed with the side plate, the inside of side plate middle opening is equipped with transmission shaft no. 1, belt pulley no. 1 is connected with belt pulley no. And a support is rotationally connected to the front end of the second transmission shaft, a servo motor is installed on the right side in the support, a lead screw nut is connected to the exterior of a lead screw, and a second driving motor is installed on the inner side of a motor base. According to the double-screw melting extrusion device, a first driving motor drives one screw, a first connecting rod and a driving gear to rotate, the driving gear drives a driven gear to rotate so that a second connecting rod and the other screw can rotate, the two screws with the opposite rotating directions are used for generating pushing force on raw materials, and it is guaranteed that the raw materials move rightwards in a melting material barrel; and uniform overturning and heating of the raw materials are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of non-woven fabric manufacturing, in particular to a twin-screw melt extrusion device. Background Art

[0002] With the continuous development of the nonwovens industry, market competition is becoming increasingly fierce, and the diversification of nonwoven products is a trend. In the production process of nonwoven products, the preparation of molten slurry is crucial. The twin-screw melt extrusion device directly affects the production cost and even the performance of the pre-drawn yarn.

[0003] For example, the utility model application number CN202023246332.8 discloses a twin-screw extruder for producing polyester fibers. The buffer device at the feed port of this utility model isolates and buffers the raw materials, which can further improve the problem of accumulation between raw materials due to rapid feeding, thereby affecting melting. The buffer device allows the raw materials to be fed evenly and fully stirred, thereby evenly melting. However, it lacks a grinding function. If the raw material particles are large, incomplete melting may occur, resulting in poor melting effect.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a twin-screw melt extrusion device is proposed. Utility Model Content

[0005] The purpose of the present invention is to provide a twin-screw melt extrusion device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a twin-screw melt extrusion device, comprising a melting barrel and a grinding box, wherein a side plate is fixed on the left side of the melting barrel, a transmission shaft 1 is passed through the bearing at the middle opening of the side plate, and a pulley 1 is provided on the outer rear end of the transmission shaft 1, the outside of the pulley 1 is connected to the pulley 2 through a belt, and a transmission shaft 2 is passed through the middle of the pulley 2, the front end of the transmission shaft 2 is rotatably connected to the bracket, a servo motor is installed on the right side of the inside of the bracket, and the output end of the servo motor is connected to a screw rod, the outside of the screw rod is connected to a screw rod nut, and a motor seat is provided at the bottom of the screw rod nut, a driving motor 2 is installed on the inside of the motor seat, and the output end of the driving motor 2 passes through the motor seat and is connected to a transmission shaft 3, a grinding roller is provided on the outside of the transmission shaft 2 and the transmission shaft 3, and the grinding box is arranged on the top left side of the melting barrel.

[0007] Furthermore, a bevel gear 2 is provided at the outer front end of the transmission shaft 1, and the right side of the bevel gear 2 is connected to the bevel gear 1.

[0008] Furthermore, a connecting rod 1 is passed through the middle of the bevel gear 1, and a driving gear is provided on the outside of the connecting rod 1.

[0009] Furthermore, the outside of the driving gear is connected to a driven gear, and a second connecting rod is passed through the middle of the driven gear.

[0010] Furthermore, the right ends of the connecting rod 1 and the connecting rod 2 are both connected to a screw, and the right end of the screw at the front end passes through the right side of the melting barrel and is connected to a driving motor 1.

[0011] Furthermore, the driving motor is installed on the right side of the melting barrel, and support seats are installed on both sides of the bottom of the melting barrel.

[0012] Furthermore, the two screws rotate in opposite directions, and the right end of the screw at the rear end is rotatably connected to the melting barrel.

[0013] Furthermore, the rotation directions of the transmission shaft 1 and the transmission shaft 2 are consistent, and the transmission shaft 2 is rotationally connected to the bracket, and the bracket is arranged above the interior of the grinding box.

[0014] The utility model provides a twin-screw melt extrusion device, which has the following beneficial effects:

[0015] 1. The utility model uses meshing transmission of bevel gear 1 and bevel gear 2 to provide rotational force for transmission shaft 1, and utilizes the friction between the belt and pulley 1 and pulley 2 to transmit power to make transmission shaft 2 and transmission shaft 1 rotate synchronously, so that under the action of drive motor 1 and drive motor 2, two grinding rollers are driven to rotate in opposite directions, and the raw materials are crushed and ground by the two grinding rollers to reduce the particle size of the raw materials, thereby significantly improving the melting effect of the raw materials.

[0016] 2. The utility model drives a motor to drive a screw, a connecting rod and a driving gear to rotate, and the driving gear drives the driven gear to rotate the connecting rod and another screw. The two screws with opposite rotation directions are used to generate a driving force on the raw material, ensuring that the raw material moves to the right in the melting barrel while ensuring that the raw material is turned and heated evenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the cross-sectional structure of the melting barrel of a twin-screw melt extrusion device of the present invention;

[0018] Figure 2 This is a schematic diagram of the top view of the support structure of a twin-screw melt extrusion device of the utility model;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of a driving gear and a driven gear of a twin-screw melt extrusion device of the present invention.

[0020] In the figure: 1. Melting barrel; 2. Support seat; 3. Driving motor 1; 4. Screw; 5. Connecting rod 1; 6. Bevel gear 1; 7. Driving gear; 8. Driven gear; 9. Connecting rod 2; 10. Bevel gear 2; 11. Transmission shaft 1; 12. Pulley 1; 13. Belt; 14. Pulley 2; 15. Transmission shaft 2; 16. Bracket; 17. Servo motor; 18. Screw; 19. Screw nut; 20. Motor seat; 21. Driving motor 2; 22. Transmission shaft 3; 23. Grinding roller; 24. Side plate; 25. Grinding box. DETAILED DESCRIPTION

[0021] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] like Figure 1 and Figure 2 As shown, a twin-screw melt extrusion device includes a melt barrel 1 and a grinding box 25. A side plate 24 is fixed to the left side of the melt barrel 1. A transmission shaft 11 is passed through the bearing at the middle opening of the side plate 24, and a pulley 12 is provided at the outer rear end of the transmission shaft 11. The outer portion of the pulley 12 is connected to the pulley 2 14 through a belt 13, and a transmission shaft 2 15 is passed through the middle of the pulley 2 14. The front end of the transmission shaft 2 15 is rotatably connected to a bracket 16. The bracket 16 A servo motor 17 is installed on the right side of the interior, and the output end of the servo motor 17 is connected to a screw rod 18, the outside of the screw rod 18 is connected to a screw nut 19, and a motor base 20 is provided at the bottom of the screw nut 19, a drive motor 21 is installed on the inside of the motor base 20, and the output end of the drive motor 21 passes through the motor base 20 and is connected to a transmission shaft 3 22, the outside of the transmission shaft 2 15 and the transmission shaft 3 22 are both provided with grinding rollers 23, and the grinding box 25 is provided on the top left side of the melting barrel 1.

[0023] The specific operation is as follows: the meshing transmission of bevel gear 16 and bevel gear 2 10 provides rotational force for transmission shaft 11, and the friction between belt 13 and pulley 12 and pulley 2 14 is used to transmit power to make transmission shaft 2 15 and transmission shaft 11 rotate synchronously, so that under the action of drive motor 1 3 and drive motor 2 21, the two grinding rollers 23 are driven to rotate in opposite directions, and the raw material is crushed and ground by the two grinding rollers 23 to reduce the particle size of the raw material, thereby significantly improving the melting effect of the raw material.

[0024] like Figure 1 and Figure 3As shown, the external front end of the transmission shaft 11 is provided with a bevel gear 2 10, and the right side of the bevel gear 2 10 is connected to a bevel gear 1 6, the middle part of the bevel gear 6 is penetrated by a connecting rod 1 5, and the outside of the connecting rod 5 is provided with a driving gear 7, the outside of the driving gear 7 is connected to a driven gear 8, and the middle part of the driven gear 8 is penetrated by a connecting rod 2 9, the right ends of the connecting rod 1 5 and the connecting rod 2 9 are connected with a screw 4, the right end of the screw 4 at the front end passes through the right side of the melting barrel 1 and is connected to a drive motor 3, the drive motor 3 is installed on the right side of the melting barrel 1, and support seats 2 are installed on both sides of the bottom of the melting barrel 1, the two screws 4 rotate in opposite directions, and the right end of the screw 4 at the rear end is rotatably connected to the melting barrel 1, the transmission shaft 11 and the transmission shaft 2 15 have the same rotation direction, and the transmission shaft 2 15 is rotatably connected to the bracket 16, and the bracket 16 is arranged above the inside of the grinding box 25.

[0025] The specific operation is as follows: the driving motor 3 drives a screw 4, a connecting rod 5 and a driving gear 7 to rotate, and the driving gear 7 drives the driven gear 8 to rotate the connecting rod 2 9 and another screw 4. The two screws 4 with opposite rotation directions are used to generate a driving force on the raw material, ensuring that the raw material moves to the right in the melting barrel 1 while ensuring that the raw material is turned and heated evenly.

[0026] In summary, when the twin-screw melt extruder is used, the servo motor 17 is first operated, and the servo motor 17 drives the screw 18 to rotate, so that the motor base 20 and the second drive motor 21 follow the screw nut 19 to move horizontally along the outside of the screw 18, that is, the distance between the second transmission shaft 15 and the third transmission shaft 22 is adjusted according to the processing requirements, so that different grinding effects are produced on the raw material under the joint action of the two grinding rollers 23;

[0027] A heating tube is provided on the inner wall of the melting barrel 1. After the power of the heating tube is turned on, the raw materials at room temperature are put into the grinding box 25. At this time, the driving motor 13 drives a screw 4, a connecting rod 15 and a bevel gear 16 to rotate. The bevel gear 16 drives the bevel gear 2 10 to rotate the transmission shaft 11. The friction between the belt 13 and the pulley 12 and the pulley 2 14 is used to transmit power to the transmission shaft 2 15 and the transmission shaft 11 to rotate synchronously. When the driving motor 13 and the driving motor 2 21 are in working state, they respectively drive the two grinding rollers 23 to rotate in opposite directions, thereby relying on the two grinding rollers 23 to grind the raw materials;

[0028] Then the raw material enters the melting barrel 1, and the driving motor 3 drives a screw 4, a connecting rod 5 and a driving gear 7 to rotate. The driving gear 7 will drive the driven gear 8 to transmit the connecting rod 2 9 and another screw 4 to rotate. The two screws 4 with opposite rotation directions are used to push the raw material to the right in the melting barrel 1, so that the raw material is gradually heated and finally extruded. Since the particle size of the raw material is reduced after grinding, the mixing effect and melting efficiency of the raw material are significantly improved, thereby ensuring the quality of the final product.

[0029] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. A twin-screw melt extrusion device, comprising a melt barrel (1) and a grinding box (25), characterized in that: A side plate (24) is fixed on the left side of the melting barrel (1), a transmission shaft (11) is passed through the bearing at the middle opening of the side plate (24), and a pulley (12) is provided at the outer rear end of the transmission shaft (11), the outer portion of the pulley (12) is connected to the pulley (14) via a belt (13), and a transmission shaft (15) is passed through the middle of the pulley (14), the front end of the transmission shaft (15) is rotatably connected to a bracket (16), and a servo motor (17) is installed on the right side of the inner portion of the bracket (16), and The output end of the servo motor (17) is connected to a screw rod (18), the outside of the screw rod (18) is connected to a screw nut (19), and a motor base (20) is provided at the bottom of the screw nut (19), a driving motor 2 (21) is installed on the inner side of the motor base (20), and the output end of the driving motor 2 (21) passes through the motor base (20) and is connected to a transmission shaft 3 (22), the outsides of the transmission shaft 2 (15) and the transmission shaft 3 (22) are both provided with a grinding roller (23), and the grinding box (25) is provided on the top left side of the melting barrel (1).

2. A twin-screw melt extrusion device according to claim 1, characterized in that: The outer front end of the transmission shaft 1 (11) is provided with a bevel gear 2 (10), and the right side of the bevel gear 2 (10) is connected with a bevel gear 1 (6).

3. A twin-screw melt extrusion device according to claim 2, characterized in that: A connecting rod (5) is passed through the middle of the bevel gear (6), and a driving gear (7) is arranged outside the connecting rod (5).

4. A twin-screw melt extrusion device according to claim 3, characterized in that: The outside of the driving gear (7) is connected to a driven gear (8), and a second connecting rod (9) is passed through the middle of the driven gear (8).

5. A twin-screw melt extrusion device according to claim 4, characterized in that: The right ends of the connecting rod 1 (5) and the connecting rod 2 (9) are both connected to a screw rod (4), and the right end of the screw rod (4) at the front end passes through the right side of the melting barrel (1) and is connected to a driving motor 1 (3).

6. A twin-screw melt extrusion device according to claim 5, characterized in that: The driving motor (3) is installed on the right side of the melting barrel (1), and support seats (2) are installed on both sides of the bottom of the melting barrel (1).

7. A twin-screw melt extrusion device according to claim 5, characterized in that: The two screws (4) rotate in opposite directions, and the right end of the screw (4) at the rear end is rotatably connected to the melting barrel (1).

8. The twin-screw melt extrusion device according to claim 1, characterized in that: The transmission shaft 1 (11) and the transmission shaft 2 (15) have the same rotation direction, and the transmission shaft 2 (15) is rotatably connected to the bracket (16), and the bracket (16) is arranged above the interior of the grinding box (25).

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