A preparation device for low shrinkage talc masterbatch
By setting a gradient pitch and multiple shear units on the screw spindle of the talc masterbatch preparation device, multi-angle extrusion and shearing are achieved, which solves the problem of reduced density and shrinkage of talc masterbatch material, and improves material density and processing quality.
Patent Information
- Application Number
- CN202421484448.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-06-26
AI Technical Summary
The existing talc masterbatch preparation device causes the reduction of the masterbatch material during the extrusion process, and the shrinkage rate is large, which affects subsequent processing and production.
A low-shrinkage talc masterbatch preparation device is designed, and a structure including a controller, a frame, a conveying pipeline, a driving mechanism, a first conveying screw and a second conveying screw are adopted. By setting the gradient pitch and multiple shear units on the screw spindle, multi-angle extrusion and shearing are achieved, gas is eliminated, and material density is improved.
It effectively reduces the gas content of masterbatch materials, improves material density, reduces shrinkage, and improves the quality of subsequent processing and production.
Smart Images
Figure CN222712799U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of masterbatch preparation, in particular to a preparation device for low-shrinkage talc masterbatch. Background Art
[0002] Talc masterbatch is a kind of plastic modified filler, which refers to the granules formed by mixing talc powder with polymer or other carriers as the main component. It is mainly used to improve the properties of rubber, plastic resin, etc., and can significantly improve the stiffness, high temperature creep resistance, heat resistance and other properties of the filling fat.
[0003] In the process of preparing talc masterbatch, the masterbatch needs to be extruded and other operations are performed, and the above functions need to rely on a screw extruder. The existing talc masterbatch preparation device generally drives the masterbatch material to extrude and transport by a screw, and there is still a lot of gas in the masterbatch material after extrusion, which will lead to a decrease in the density of the masterbatch material and a large shrinkage rate of the masterbatch material, affecting subsequent processing and production. Therefore, it is necessary to provide a low-shrinkage talc masterbatch preparation device to solve the above problems. Utility Model Content
[0004] Therefore, in view of the above problems, the utility model proposes a preparation device for low-shrinkage talc masterbatch which has a simple and reasonable structure, reduces the gas content of the masterbatch material, and increases the density of the masterbatch material.
[0005] In order to solve this technical problem, the utility model adopts the following scheme: a preparation device of low-shrinkage talc masterbatch, comprising a controller, a frame, a conveying pipeline, a driving mechanism, a first conveying screw and a second conveying screw; the first conveying screw and the second conveying screw are rotatably and parallelly arranged in the hollow inner cavity of the conveying pipeline, the driving mechanism is arranged on the frame and the output end of the driving mechanism is connected to and drives the first conveying screw and the second conveying screw to rotate and convey materials; the driving mechanism is connected to and controlled by the controller, the conveying pipeline is located at the corresponding position of the spiral blades of the first conveying screw and the second conveying screw The material conveying stroke is evenly distributed with a plurality of exhaust holes, the first conveying screw includes a first screw main shaft and one or more first shearing screws. Cutting unit, each group of first shearing units is sleeved on the first screw main shaft at intervals, the second conveying screw includes the second screw main shaft and more than one group of second shearing units, each group of second shearing units is sleeved on the second screw main shaft at intervals, each cutter of each group of first shearing units and each cutter of each group of second shearing units are symmetrically arranged on the first screw main shaft and the second screw main shaft along the material conveying center line, the pitch of each section of conveying thread separated by each group of first shearing units on the first screw main shaft gradually decreases along the material conveying direction, the pitch of each section of conveying thread separated by each group of second shearing units on the second screw main shaft gradually decreases along the material conveying direction, and the first conveying screw and the second conveying screw have different rotation directions.
[0006] As a further improvement, the pitch of each section of the conveying thread on the first screw main shaft includes multiple pitches and the various pitches are arranged from large to small along the material conveying direction.
[0007] As a further improvement, the pitch of each section of the conveying thread on the second screw main shaft includes multiple pitches and the various pitches are arranged from large to small along the material conveying direction.
[0008] As a further improvement, each group of first shearing units includes multiple first cutters, and the shearing surface of each first cutter forms a different angle with the center line of the first screw shaft to form a variety of shearing angles; the second shearing unit includes multiple second cutters, and the shearing surface of each second cutter forms a different angle with the center line of the second screw shaft to form a variety of shearing angles.
[0009] As a further improvement, the driving mechanism includes two driving units, and the output ends of the two driving units are respectively connected to and drive the first conveying screw and the second conveying screw to rotate.
[0010] As a further improvement, the driving unit is a rotary motor or a servo mechanism.
[0011] A further improvement is that the driving mechanism includes a motor, a first gear and a second gear, the first gear and the second gear are respectively mounted on the first screw main shaft of the first conveying screw and the second screw main shaft of the second conveying screw and the first gear and the second gear are meshed with each other, the output end of the motor is connected to and drives the first gear and then drives the second gear to rotate, or the output end of the motor is connected to and drives the second gear and then drives the first gear to rotate.
[0012] As a further improvement, the inner wall of the conveying pipeline is provided with a breathable intercepting net at each exhaust hole.
[0013] By adopting the above-mentioned technical scheme, the beneficial effect of the utility model is as follows: by setting the pitch of each section of the conveying thread separated by each group of first shearing units on the first screw main shaft to gradually decrease along the material conveying direction, and the pitch of each section of the conveying thread separated by each group of second shearing units on the second screw main shaft to gradually decrease along the material conveying direction, when the talc masterbatch material is fed to each section with different pitches, the pitch between the threads becomes smaller and the space is squeezed, so that the masterbatch material is squeezed at multiple angles to remove air; at the same time, each group of first shearing units and each group of second shearing units cooperate with each other to shear the conveyed material to avoid the talc masterbatch material from forming multiple agglomerates after extrusion, thereby ensuring the dispersibility of the talc masterbatch material, with a simple and reasonable structure, reducing the gas content in the masterbatch material, and increasing the density of the masterbatch material. Through further settings, that is, each section of the conveying thread on the first screw main shaft and each section of the conveying thread on the second screw main shaft are set with multiple pitches, so that the masterbatch material can be gradually extruded and the air contained therein can be discharged more efficiently. Each group of first shearing units and each group of second shearing units are set with multiple shearing angles, which can shear the masterbatch material at multiple angles to more effectively break up the masterbatch agglomeration and further discharge excess air in the masterbatch material, thereby increasing the density of the masterbatch material, and can be widely promoted and applied. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a partial three-dimensional structural schematic diagram of an embodiment of the utility model;
[0015] Figure 2 It is a partial structural schematic diagram of an embodiment of the utility model. DETAILED DESCRIPTION
[0016] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods. The innovative design of the utility model is to add exhaust air at the end of the masterbatch material preparation production line to increase the density of the masterbatch material so that it becomes a low-shrinkage talc masterbatch. Therefore, how to achieve the existing preparation structure of the talc masterbatch is no longer described, and only the innovative design part of the utility model is described in detail.
[0017] refer to Figure 1 and Figure 2, the preferred preparation device of low-shrinkage talc masterbatch of the utility model comprises a controller, a frame 1, a conveying pipeline 2, a driving mechanism, a first conveying screw 4 and a second conveying screw 5; the first conveying screw 4 and the second conveying screw 5 are rotatably and parallelly arranged in the hollow inner cavity of the conveying pipeline 2, the driving mechanism is arranged on the frame 1 and the output end of the driving mechanism is connected to and drives the first conveying screw 4 and the second conveying screw 5 to rotate and convey materials; a feed hopper 6 is provided on the feeding end of the conveying pipeline 2, and the feed hopper is used to connect with the masterbatch finished product discharge port at the end of the masterbatch material preparation production line, and a discharge port 21 is provided at the lower part of the discharge end of the conveying pipeline 2, and the conveying pipeline 2 is located at the first conveying A plurality of exhaust holes are evenly distributed at the positions corresponding to the material conveying stroke of the spiral blades of the screw 4 and the second conveying screw 5, and a breathable interception net is provided at each exhaust hole on the inner wall of the conveying pipe 2. The first conveying screw 4 includes a first screw main shaft 41 and four groups of first shearing units 42, and each group of first shearing units 42 is sleeved on the first screw main shaft 41 at intervals. The second conveying screw 5 includes a second screw main shaft 51 and four groups of second shearing units 52, and each group of second shearing units 52 is sleeved on the second screw main shaft 51 at intervals. Each cutter of each group of first shearing units 42 and each cutter of each group of second shearing units 52 are symmetrically arranged on the first screw along the material conveying center line. On the main shaft 41 and the second screw main shaft 51, each group of first shearing units 42 includes a plurality of first cutters, and the shearing surface of each first cutter forms a different angle of 45°, 60°, and 90° with the center line of the first screw main shaft 41 to form a variety of shearing angles, and the second shearing unit 52 includes a plurality of second cutters, and the shearing surface of each second cutter forms a different angle of 45°, 60°, and 90° with the center line of the second screw main shaft 51 to form a variety of shearing angles, and the pitch of each section of the conveying thread on the first screw main shaft 41 includes five pitches of 144, 96, 72, 56, and 28, and the various pitches are arranged from large to small along the material conveying direction, and each section of the conveying thread on the second screw main shaft 51 The pitches of the threads include five kinds of pitches: 144, 96, 72, 56, and 28, and the various pitches are arranged from large to small along the material conveying direction. The first conveying screw 4 and the second conveying screw 5 have different rotation directions. The driving mechanism includes a motor 31, a first gear 32 and a second gear 33. The first gear 32 and the second gear 33 are respectively sleeved on the first screw main shaft 41 of the first conveying screw 4 and the second screw main shaft 51 of the second conveying screw 5, and the first gear 32 and the second gear 33 are meshed with each other. The output end of the motor 31 is connected to and drives the first gear 32 and then drives the second gear 33 to rotate. The motor 31 of the driving mechanism is connected to and controlled by a controller.
[0018] In the above embodiment, the pitch of each section of the conveying thread on the first screw main shaft can be freely set according to the different requirements of the equipment model, and the pitch can be arranged from large to small along the material conveying direction. The pitch of each section of the conveying thread on the second screw main shaft can be freely set according to the different requirements of the equipment model, and the pitch can be arranged from large to small along the material conveying direction. The cutting surface of the multiple first cutters set on each group of first shearing units can also form 35° or other different angles with the center line of the first screw main shaft to form a variety of shearing angles. The cutting surface of the multiple second cutters set on each group of second shearing units can also form 35° or other different angles with the center line of the second screw main shaft to form a variety of shearing angles. The above drive mechanism can also use the output end of the motor to connect and drive the second gear to drive the first gear to rotate. At the same time, the drive mechanism can also be set as two drive units, and the output ends of the two drive units are respectively connected and drive the first conveying screw and the second conveying screw to rotate. At the same time, the first conveying screw and the second conveying screw driven by the two drive units rotate in opposite directions. The drive unit is a rotary motor or a servo mechanism.
[0019] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes may be made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims, all of which are within the scope of protection of the present invention.
Claims
1. A preparation device for low shrinkage talc masterbatch, comprising a controller, a frame, a conveying pipeline, a driving mechanism, a first conveying screw and a second conveying screw; the first conveying screw and the second conveying screw are rotatably and parallelly arranged in the hollow inner cavity of the conveying pipeline, the driving mechanism is arranged on the frame and the output end of the driving mechanism is connected to and drives the first conveying screw and the second conveying screw to rotate and convey materials; the driving mechanism is connected to and controlled by the controller, characterized in that: The conveying pipeline is evenly provided with a plurality of exhaust holes at positions corresponding to the conveying material strokes of the spiral blades of the first conveying screw and the second conveying screw. The first conveying screw includes a first screw main shaft and one or more first shearing units, and each group of first shearing units is sleeved on the first screw main shaft at intervals. The second conveying screw includes a second screw main shaft and one or more second shearing units, and each group of second shearing units is sleeved on the second screw main shaft at intervals. Each cutter of each group of first shearing units and each cutter of each group of second shearing units are symmetrically arranged on the first screw main shaft and the second screw main shaft along the material conveying center line. The pitch of each section of the conveying thread separated by each group of first shearing units on the first screw main shaft gradually decreases along the material conveying direction, and the pitch of each section of the conveying thread separated by each group of second shearing units on the second screw main shaft gradually decreases along the material conveying direction. The first conveying screw and the second conveying screw have different rotation directions.
2. The device for preparing low shrinkage talc masterbatch according to claim 1, characterized in that: The pitches of the conveying threads of each section on the first screw main shaft include multiple pitches, and the various pitches are arranged from large to small along the material conveying direction.
3. The preparation device of low shrinkage talc masterbatch according to claim 1, characterized in that: The pitches of the conveying threads of each section on the second screw main shaft include multiple pitches, and the various pitches are arranged from large to small along the material conveying direction.
4. The preparation device of low shrinkage talc masterbatch according to claim 1, characterized in that: Each group of first shearing units includes multiple first cutters, and the shearing surface of each first cutter forms different angles with the center line of the first screw main shaft to form a variety of shearing angles. The second shearing unit includes multiple second cutters, and the shearing surface of each second cutter forms different angles with the center line of the second screw main shaft to form a variety of shearing angles.
5. The preparation device of low shrinkage talc masterbatch according to claim 1, characterized in that: The driving mechanism comprises two driving units, and the output ends of the two driving units are respectively connected to and drive the first conveying screw and the second conveying screw to rotate.
6. The device for preparing low shrinkage talc masterbatch according to claim 5, characterized in that: The driving unit is a rotary motor or a servo mechanism.
7. The preparation device of low shrinkage talc masterbatch according to claim 1, characterized in that: The driving mechanism includes a motor, a first gear and a second gear. The first gear and the second gear are respectively sleeved on the first screw main shaft of the first conveying screw and the second screw main shaft of the second conveying screw, and the first gear and the second gear are meshed with each other. The output end of the motor is connected to and drives the first gear and then drives the second gear to rotate, or the output end of the motor is connected to and drives the second gear and then drives the first gear to rotate.
8. The preparation device of low shrinkage talc masterbatch according to claim 1, characterized in that: The inner wall of the conveying pipeline is provided with a breathable intercepting net at each exhaust hole.