Multi-screw extrusion calender

By designing a multi-screw extrusion calender, the problems of uneven material distribution and high energy consumption were solved, achieving automated production and product consistency, reducing energy consumption and labor costs, and improving production efficiency.

CN121552582APending Publication Date: 2026-02-24NANJING KAICHI MASCH CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202610051176.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-15
Publication Date
2026-02-24

AI Technical Summary

Technical Problem

Existing material extrusion and calendering processes suffer from problems such as uneven material distribution, high energy consumption, and low automation, especially since manual feeding is required on separate production lines.

Method used

A multi-screw extrusion calender was designed, including a movable base, a feeder, an auxiliary frame, an extrusion mechanism, and a calendering mechanism. It adopts an obliquely arranged spiral extrusion rod and gear structure, combined with a pneumatic cutter and a guide roller, to achieve automatic feeding and waste recycling. Through the independent drive of the drive motor and the guide motor, the automation level of production and product consistency are improved.

Benefits of technology

It achieves uniform extrusion and efficient calendering of materials, reduces energy consumption, improves the degree of production automation, reduces material waste and labor costs, and ensures consistent product quality and smooth production processes.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN121552582A_ABST
    Figure CN121552582A_ABST
Patent Text Reader

Abstract

The invention discloses a multi-screw extrusion calender, which comprises two linear guide rails and further comprises a movable base, a plurality of screw rods and a plurality of screw rods, the feeding machine is fixedly connected to the top of the movable base; the auxiliary frame is fixedly connected to the right sides of the two linear guide rails; an extrusion mechanism is arranged in the feeding machine, a calendaring mechanism is arranged in the auxiliary frame, the extrusion mechanism comprises two obliquely-arranged spiral extrusion rods and two gears, the spiral extrusion rods are symmetrically and rotationally connected into the feeding machine, the left side of the spiral extrusion rod located on the rear side extends out of the feeding machine, and the right side of the spiral extrusion rod located on the rear side extends out of the feeding machine. According to the screw extruder, through the technologies of integration, independent driving, automation, precise control and the like, the equipment energy consumption is remarkably reduced, the production automation degree and the product precision are improved, and the material waste and the labor cost are reduced.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This invention relates to the field of materials processing technology, and in particular to a multi-screw extrusion calender. Background Technology

[0002] In existing technologies, material extrusion calendering is a common plastic processing technology widely used in the manufacture of various plastic products. The advantages of material extrusion calendering technology include high production efficiency, the ability to achieve large-scale production, and the ability to adjust the physical properties and appearance of the material as needed. Therefore, it has been widely used in many industries such as packaging, construction, automotive, and electronics. In existing technologies, the two production lines are often carried out separately during the extrusion and calendering process of materials. Manual feeding is usually required, which results in problems such as uneven material distribution, high energy consumption, and low automation. Summary of the Invention

[0003] Based on the technical problems existing in the background technology, the present invention proposes a multi-screw extrusion calender.

[0004] The multi-screw extrusion calender proposed in this invention includes two linear guide rails, and further includes: A movable base, which is slidably connected to the top of two linear guide rails; A feeder, which is fixedly connected to the top of the movable base; An auxiliary frame is fixedly connected to the right side of two linear guide rails; The feeder is equipped with an extrusion mechanism, and the auxiliary frame is equipped with a calendering mechanism.

[0005] Preferably, the extrusion mechanism includes two obliquely arranged spiral extrusion rods and two gears. The spiral extrusion rods are symmetrically rotatably connected inside the feeder. The left side of the spiral extrusion rod located on the rear side extends to the outside of the feeder. The two gears are fixedly sleeved on the outer wall of the adjacent spiral extrusion rods and the two gears mesh with each other.

[0006] Furthermore, the extrusion mechanism adopts an obliquely arranged spiral extrusion rod and gear structure, which can effectively improve the material extrusion efficiency. The symmetrical rotation design ensures that the material is subjected to uniform force during the extrusion process, thereby improving the extrusion effect and product quality.

[0007] Preferably, a drive motor is fixedly connected to the front side of the feeder, and the output shaft of the drive motor is fixedly connected to the spiral extrusion rod located at the rear side.

[0008] Furthermore, the direct connection between the drive motor and the screw extruder ensures efficient transmission of the drive system, simple control and rapid response, improving the overall working efficiency of the equipment and reducing energy consumption.

[0009] Preferably, the calendering mechanism includes two calendering rollers and two guide motors. The two calendering rollers are slidably connected in the auxiliary frame, and the two guide motors are symmetrically slidably connected on the front and rear sides of the auxiliary frame. The output shafts of the two guide motors are fixedly connected to the adjacent calendering rollers.

[0010] Furthermore, the calendering mechanism enhances the calendering capacity of materials through the design of two calendering rollers and a guide motor. The adjustable calendering roller speed and pressure make the calendering process more precise, which can meet the requirements of different products and improve the consistency and stability of the products.

[0011] Preferably, a guide plate is fixedly connected to the top of the auxiliary frame, and a feeding port is provided on the top of the feeder, with the guide plate cooperating with the feeding port.

[0012] Furthermore, the design of the guide plate optimizes the material conveying path, ensuring the smooth flow of material from the guide plate to the feeder, avoiding material blockage, and improving production efficiency.

[0013] Preferably, two jacks are symmetrically arranged on the right side of the auxiliary frame, and the bottom of the two jacks is fixedly connected to the same pneumatic cutter. A guide roller is fixedly connected inside the auxiliary frame, and the guide roller cooperates with the pneumatic cutter and the guide plate.

[0014] Furthermore, the combination of jacks and pneumatic cutters enables precise material cutting, ensuring that the finished product meets production standards. At the same time, the automatic waste disposal mechanism reduces manual intervention, improves the level of automation in production, and lowers labor costs.

[0015] Preferably, the feeder has a duckbill discharge port on its right side.

[0016] Furthermore, the duckbill discharge port design facilitates rapid material discharge, reduces material retention during extrusion, improves overall work efficiency, and ensures smooth production processes.

[0017] Preferably, the auxiliary frame has two symmetrical auxiliary slots, and the pneumatic cutter is slidably connected to the inner walls of the two auxiliary slots.

[0018] Furthermore, the combined design of the auxiliary groove and the pneumatic cutter enables more precise cutting, ensuring the integrity and consistency of materials during processing, while also improving waste disposal efficiency and making the production process more environmentally friendly.

[0019] The beneficial effects of this invention are: By connecting the feeder and the calendering roll with a guide rail, automatic feeding is achieved, which solves the problems of uneven feeding and high labor intensity of manual feeding. The openable cleaning door at the docking point facilitates quick material replacement and cleaning. By installing a pneumatic cutter and guide roller at the discharge end of the calender roll, the cut-off waste edges can be automatically and continuously transported back to the feeder inlet for reuse, realizing fully automatic closed-loop production and eliminating material waste and manual intervention.

[0020] Beneficial effects: This invention significantly reduces equipment energy consumption, improves the degree of production automation and product precision, and reduces material waste and labor costs through technologies such as integration, independent drive, automation and precise control. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the multi-screw extrusion calender proposed in this invention; Figure 2 This is a three-dimensional side view of the multi-screw extrusion calender proposed in this invention; Figure 3 This is a three-dimensional structural diagram of the feeder, spiral extrusion rod, and gears of the multi-screw extrusion calender proposed in this invention. Figure 4 This is a three-dimensional structural diagram of the auxiliary frame, guide motor, guide roller, jack, pneumatic cutter and guide plate of the multi-screw extrusion calender proposed in this invention. Figure 5 This is a three-dimensional structural diagram of the linear guide rail and moving base of the multi-screw extrusion calender proposed in this invention.

[0022] In the diagram: 1. Linear guide rail; 2. Auxiliary frame; 3. Moving base; 4. Feeder; 5. Spiral extruder; 6. Gear; 7. Drive motor; 8. Calendering roller; 9. Guide motor; 10. Guide roller; 11. Jack; 12. Pneumatic cutter; 13. Guide plate. Detailed Implementation

[0023] The present invention will be further explained below with reference to specific embodiments. Example

[0024] refer to Figure 1-5 This embodiment proposes a multi-screw extrusion calender, including two linear guide rails 1. The multi-screw extrusion calender also includes: The movable base 3 is slidably connected to the top of the two linear guide rails 1; Feeder 4 is fixedly connected to the top of the movable base 3; Auxiliary frame 2 is fixedly connected to the right side of the two linear guide rails 1; The feeder 4 is equipped with an extrusion mechanism, and the auxiliary frame 2 is equipped with a calendering mechanism.

[0025] Through the aforementioned mechanism, the multi-screw extrusion calender, with its movable base 3 and auxiliary frame 2, enables flexible material handling and efficient production processes. The two linear guide rails 1 provide stable support, ensuring the accuracy and safety of the equipment during operation.

[0026] In this embodiment, the extrusion mechanism includes two obliquely arranged spiral extrusion rods 5 and two gears 6. The spiral extrusion rods 5 are symmetrically rotatably connected inside the feeder 4. The left side of the spiral extrusion rod 5 located on the rear side extends to the outside of the feeder 4. The two gears 6 are fixedly sleeved on the outer wall of the adjacent spiral extrusion rods 5, and the two gears 6 mesh with each other. The extrusion mechanism adopts the structure of obliquely arranged spiral extrusion rods 5 and gears 6, which can effectively improve the extrusion efficiency of materials. The symmetrical rotation design makes the material uniformly stressed during the extrusion process, thereby improving the extrusion effect and product quality.

[0027] In this embodiment, a drive motor 7 is fixedly connected to the front side of the feeder 4, and the output shaft of the drive motor 7 is fixedly connected to the spiral extrusion rod 5 located at the rear side. The direct connection between the drive motor 7 and the spiral extrusion rod 5 ensures efficient transmission of the drive system, simple control and rapid response, improves the overall working efficiency of the equipment, and reduces energy consumption.

[0028] In this embodiment, the calendering mechanism includes two calendering rollers 8 and two guide motors 9. The two calendering rollers 8 are slidably connected within the auxiliary frame 2, and the two guide motors 9 are symmetrically slidably connected on the front and rear sides of the auxiliary frame 2. The output shafts of the two guide motors 9 are fixedly connected to the adjacent calendering rollers 8. The calendering mechanism, through the design of the two calendering rollers 8 and the guide motors 9, enhances the calendering processing capability of materials. The adjustable speed and pressure of the calendering rollers 8 make the calendering process more precise, which can meet the requirements of different products and improve the consistency and stability of the products.

[0029] In this embodiment, a guide plate 13 is fixedly connected to the top of the auxiliary frame 2, and a feeding port is provided on the top of the feeder 4. The guide plate 13 cooperates with the feeding port. The design of the guide plate 13 optimizes the material conveying path, ensures the smoothness of the material from the guide plate 13 to the feeder 4, avoids material blockage, and improves production efficiency.

[0030] In this embodiment, two jacks 11 are symmetrically arranged on the right side of the auxiliary frame 2, and the bottom of the two jacks 11 is fixedly connected to the same pneumatic cutter 12. A guide roller 10 is fixedly connected inside the auxiliary frame 2, and the guide roller 10 cooperates with the pneumatic cutter 12 and the guide plate 13. The combination of jacks 11 and pneumatic cutter 12 can achieve precise material cutting, ensure that the finished product meets the production standards, and at the same time, the automatic waste disposal mechanism reduces manual intervention, improves the degree of automation of production, and reduces labor costs.

[0031] In this embodiment, the feeder 4 is provided with a duckbill discharge port on the right side. The design of the duckbill discharge port facilitates the rapid discharge of materials, reduces material retention during the extrusion process, improves overall work efficiency, and ensures the smoothness of the production process.

[0032] In this embodiment, two auxiliary slots are symmetrically arranged inside the auxiliary frame 2. The pneumatic cutter 12 is slidably connected to the inner wall of the two auxiliary slots. The cooperative design of the auxiliary slots and the pneumatic cutter 12 can achieve more precise cutting, ensure the integrity and consistency of the material during the processing, and also improve the waste disposal efficiency, making the production process more environmentally friendly.

[0033] Working Principle: In actual operation, material is fed into the feeder 4 through the feeding port. The drive motor 7 operates, and its output shaft controls the rotation of the rear spiral extrusion rod 5. Simultaneously, the rotation of the spiral extrusion rod 5 synchronously controls the rotation of the gear 6. By controlling the rotation of the gear 6, which engages with the front gear 6, the front spiral extrusion rod 5 is rotated. By controlling the rotation of both spiral extrusion rods 5, the extrusion process is completed. The extruded material passes between two calendering rollers 8. Two guide motors 9 operate, controlling the rotation of the two calendering rollers. The two calendering rollers 8 rotate to control the calendering of the material. The calendered material is guided by the two calendering rollers 8 and passes between the pneumatic cutter 12 and the guide roller 10. At this time, the jack 11 controls the pneumatic cutter 12 to descend and contact the calendered material, cutting the calendered material to make it meet the production standards. At the same time, the waste generated on both sides after cutting is manually guided by the staff to the top of the guide plate 13. As the material is extruded and calendered, the waste will re-enter the feeder 4 to be washed and extruded and calendered, which improves the degree of automation and product accuracy, while reducing material waste and labor costs.

[0034] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A multi-screw extrusion calender, comprising two linear guides (1), characterized in that, The multi-screw extrusion calender also includes: A movable base (3) is slidably connected to the top of two linear guide rails (1); The feeder (4) is fixedly connected to the top of the movable base (3); Auxiliary frame (2), which is fixedly connected to the right side of two linear guide rails (1); The feeder (4) is equipped with an extrusion mechanism, and the auxiliary frame (2) is equipped with a calendering mechanism.

2. The multi-screw extrusion calender according to claim 1, characterized in that, The extrusion mechanism includes two obliquely arranged spiral extrusion rods (5) and two gears (6). The spiral extrusion rods (5) are symmetrically rotated and connected inside the feeder (4). The left side of the spiral extrusion rod (5) located on the rear side extends to the outside of the feeder (4). The two gears (6) are fixedly sleeved on the outer wall of the adjacent spiral extrusion rods (5) and the two gears (6) mesh with each other.

3. The multi-screw extrusion calender according to claim 2, characterized in that, The feeder (4) is fixedly connected to a drive motor (7) on the front side, and the output shaft of the drive motor (7) is fixedly connected to the spiral extrusion rod (5) located on the rear side.

4. The multi-screw extrusion calender according to claim 1, characterized in that, The calendering mechanism includes two calendering rollers (8) and two guide motors (9). The two calendering rollers (8) are slidably connected in the auxiliary frame (2), and the two guide motors (9) are symmetrically slidably connected on the front and rear sides of the auxiliary frame (2). The output shafts of the two guide motors (9) are fixedly connected to the adjacent calendering rollers (8).

5. The multi-screw extrusion calender according to claim 1, characterized in that, The top of the auxiliary frame (2) is fixedly connected to a guide plate (13), and the top of the feeder (4) is provided with a feeding port. The guide plate (13) cooperates with the feeding port.

6. The multi-screw extruder calender according to claim 5, characterized in that, Two jacks (11) are symmetrically arranged on the right side of the auxiliary frame (2), and the bottom of the two jacks (11) is fixedly connected to the same pneumatic cutter (12). A guide roller (10) is fixedly connected inside the auxiliary frame (2), and the guide roller (10) cooperates with the pneumatic cutter (12) and the guide plate (13).

7. The multi-screw extrusion calender according to claim 1, characterized in that, The feeder (4) has a duckbill discharge port on its right side.

8. The multi-screw extrusion calender according to claim 5, characterized in that, The auxiliary frame (2) is symmetrically provided with two auxiliary slots, and the pneumatic cutter (12) is slidably connected to the inner wall of the two auxiliary slots.