ABS (Acrylonitrile Butadiene Styrene) raw material mixing equipment
By designing an ABS raw material mixing device including a quantitative feeding assembly and a mixed feeding assembly, the problem of excessive barrel length due to multiple feeding ports in the existing extruder is solved, and uniform mixing of ABS plastic particles and space savings are achieved.
Patent Information
- Application Number
- CN202421760700.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-23
AI Technical Summary
The existing extruders require multiple feed ports to mix different colors of ABS plastic particles, resulting in too large barrel length, taking up a large space and inconvenient transportation.
An ABS raw material mixing device is designed, including a support frame, a dosing feed assembly and a mixing and injection assembly. The dosage feed assembly transports ABS plastic particles of different colors into the injection chamber through a motor-driven feed screw, and the mixed injection assembly injects the plastic particles into the barrel in a fixed ratio through push blocks driven by a servo cylinder.
A uniform mixing of ABS plastic particles of different colors is achieved, reducing the length and size of the extruder, saving space and easy transportation.
Smart Images
Figure CN222792615U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a mixing device, in particular to an ABS raw material mixing device. Background Art
[0002] Conventional suitcases have many plastic parts, and the raw materials of these plastic parts are generally ABS plastic particles. ABS plastic particles are a kind of thermoplastic polymer material with high strength, good toughness, corrosion resistance, high temperature resistance, and easy processing and molding. There are generally only a few colors of ABS plastic particles. Therefore, when the design color of the plastic part cannot be met by the ready-made plastic particles, it is necessary to mix particles of different colors in a certain proportion to get the preset color. These plastic particles of different colors need to be evenly mixed and melted to get a plastic product with uniform color.
[0003] However, unlike liquid mixing equipment, plastic particles of different colors cannot be mixed and evenly mixed in advance by stirring equipment before melting. The actual mixing process occurs in the extruder. The most critical structure of the extruder is the screw and the barrel wrapped around the outside of the screw. There are two to three feeding ports at different positions of the barrel. A certain distance needs to be maintained between the feeding ports. Different plastic particles enter the barrel through these feeding ports one after another. The barrel is in a state of high temperature and high pressure. The plastic particles will melt quickly. Different plastic particles are mixed evenly under the stirring and extrusion of the screw. In this way, you only need to control the feeding speed at different feeding ports to achieve mixing in a fixed ratio. However, the more feeding ports there are on the barrel, the longer the barrel must be to ensure that all the particles can be completely melted. This will result in a large length of the extruder, occupying a large space, and not being convenient for transportation. Summary of the invention
[0004] The utility model provides an ABS raw material mixing device, which solves the problem in the prior art that the length of the extruder itself is too large in order to achieve mixing of multiple plastic particles.
[0005] The above technical problems of the utility model are mainly solved by the following technical solutions: an ABS raw material mixing equipment, characterized in that it includes a support frame, at least two sets of quantitative feeding components and a mixed injection component fixed relative to the support frame; the quantitative feeding component includes a motor, a feeding screw connected to the motor in a transmission manner, a sleeve sleeved on the outside of the feeding screw and relatively fixed, and a hopper, the bottom of the hopper is connected to one end of the sleeve, and the other end of the sleeve is provided with a discharge port; the mixed injection component includes a vertical injection pipe, a plurality of injection cavities arranged in the injection pipe and connected at both ends, a push block slidably assembled in the injection cavity, a push rod connected to the upper side of the push block, and a servo electric cylinder that synchronously drives all push rods to extend and retract up and down, the upper half of the injection pipe is provided with a plurality of injection ports connected to the injection cavity, the number of the injection ports is the same as that of the discharge ports, and a feeding pipe is connected between the two.
[0006] The support frame of the utility model is generally fixed on the extruder, and the lower end of the injection tube is connected to the barrel on the extruder, so that the plastic particles pushed out from the injection tube can directly enter the barrel. The working principle of the quantitative feeding component is: ABS plastic particles of different colors are stored in different hoppers, and the motors on different quantitative feeding components have different running speeds. The motor drives the feeding screw to rotate, and the plastic particles in the hopper will be continuously pushed to the side of the discharge port by the feeding screw. The plastic particles discharged from the discharge port will eventually fall into the injection cavity in the injection tube through the feeding tube, and the plastic particles output by different quantitative feeding components flow into different injection cavities. The cross-sectional area of the injection cavity is positively correlated with the ratio of different plastic particles. Since the conventional extruder with an injection mold operates discontinuously, the screw of the injection molding machine stops rotating during the heat preservation and pressure holding process of the injection mold. Therefore, the working principle of the utility model is as follows: when the screw of the injection molding machine stops, the electric cylinder drives all the push blocks to move to the highest position. At this time, the injection port is located below the push block, and different quantitative feeding components are opened synchronously. Different plastic particles gradually fill the injection cavity at a similar rate, and then the different quantitative feeding components are closed synchronously. When the screw of the injection molding machine rotates again, the electric cylinder drives all the push blocks to move downward, and presses the plastic particles in the injection cavity to inject into the barrel of the injection molding machine at a fixed speed, thereby achieving the mixing of ABS raw materials in a fixed ratio.
[0007] Furthermore, the utility model also includes a PLC controller, and the motor and the electric cylinder are both controlled and operated by the PLC controller. The PLC controller is also used to control the operation of the extruder.
[0008] Therefore, compared with the prior art, the utility model has the following characteristics: 1. Different ABS particles are delivered to the corresponding injection chambers through multiple sets of quantitative feeding components. Since the cross-sectional areas of different injection chambers are positively correlated with the ratios of different plastic particles, the particle stacking heights in different injection chambers are consistent. Under the action of the push block, the particles in different injection chambers are injected into the barrel at the same speed and melt mixed in the barrel. This makes the utility model have a reliable mixing effect, and the barrel on the extruder only needs one opening, which is conducive to controlling the length size of the extruder. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Attached Figure 1 It is a structural schematic diagram of the utility model;
[0010] Attached Figure 2 Yes Figure 1 A magnified view of part A;
[0011] Attached Figure 3 Yes Figure 1 Enlarged view of part B. DETAILED DESCRIPTION
[0012] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.
[0013] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0014] Embodiment 1: An ABS raw material mixing device comprises a support frame 100, two sets of quantitative feeding components 200 fixed relative to the support frame, and a mixed injection component 300; the quantitative feeding component comprises a motor 210, a feeding screw 220 connected to the motor, a sleeve 230 sleeved on the outside of the feeding screw and relatively fixed, and a hopper 240, the bottom of the hopper is connected to one end of the sleeve, and the other end of the sleeve is provided with a discharge port 231; the mixed injection component comprises a vertical injection pipe 310, two injection cavities 320 arranged in the injection pipe and connected at both ends, a push block 330 slidably assembled in the injection cavity, a push rod 340 connected to the upper side of the push block, and a servo electric cylinder 350 for synchronously driving all push rods to extend and retract up and down, the upper half of the injection pipe is provided with two injection ports 311 connected to the injection cavity, and a feeding pipe 360 is connected between the injection port and the discharge port.
[0015] The quantitative feeding assembly also includes two mounting plates 250 vertically fixed on the support frame, the two ends of the sleeve are fixed on the two mounting plates, the motor is fixed on the outside of one mounting plate, the feed screw is rotatably assembled on the two mounting plates, a bearing 251 is provided at the rotating connection, and a coupling 260 is connected between one end of the feed screw and the output shaft of the motor.
[0016] The electric cylinder is fixed vertically on the mounting plate, and a push plate 370 is provided at the end of the cylinder rod of the electric cylinder. All push rods are fixed on the push plate. An upper touch switch 381 and a lower touch switch 382 are provided on the side wall of the mounting plate. When the push plate contacts any of the touch switches, the electric cylinder stops operating. The two touch switches are used to prevent the push plate from moving too low or too high, and play a protective role.
[0017] Furthermore, the present embodiment also includes a PLC controller, and the motor and the electric cylinder are both controlled and operated by the PLC controller. The PLC controller is also used to control the operation of the extruder.
[0018] The support frame of this embodiment is fixed on the extruder, and the lower end of the injection tube is connected to the barrel on the extruder, so that the plastic particles pushed out of the injection tube can directly enter the barrel. The working principle of the quantitative feeding component is: ABS plastic particles of different colors are stored in different hoppers, and the motors on different quantitative feeding components have different running speeds. The motor drives the feeding screw to rotate, and the plastic particles in the hopper will be continuously pushed to the side of the discharge port by the feeding screw. The plastic particles discharged from the discharge port will eventually fall into the injection cavity in the injection tube through the feeding tube, and the plastic particles output by different quantitative feeding components flow into different injection cavities. The cross-sectional area of the injection cavity is positively correlated with the ratio of different plastic particles. Since the conventional extruder with an injection mold operates discontinuously, the screw of the injection molding machine stops rotating during the heat preservation and pressure maintenance process of the injection mold. Therefore, the working principle of this embodiment is as follows: when the screw of the injection molding machine stops, the electric cylinder drives all the push blocks to move to the highest position. At this time, the injection port is located below the push block, and different quantitative feeding components are opened synchronously. Different plastic particles gradually fill the injection cavity at a similar rate, and then the different quantitative feeding components are closed synchronously. When the screw of the injection molding machine rotates again, the electric cylinder drives all the push blocks to move downward, pressing the plastic particles in the injection cavity to inject into the barrel of the injection molding machine at a fixed speed, thereby achieving the mixing of ABS raw materials in a fixed ratio.
[0019] It is obvious to those skilled in the art that the utility model can be changed in many ways, and such changes are not considered to be out of the scope of the utility model. All such modifications obvious to those skilled in the art will be included in the scope of the claims.
Claims
1. An ABS raw material mixing device, characterized by: It includes a support frame, at least two sets of quantitative feeding components and a mixed injection component fixed relative to the support frame; the quantitative feeding component includes a motor, a feeding screw transmission connected to the motor, a sleeve sleeved on the outside of the feeding screw and relatively fixed, and a hopper, the bottom of the hopper is connected to one end of the sleeve, and the other end of the sleeve is provided with a discharge port; the mixed injection component includes a vertical injection pipe, a plurality of injection cavities arranged in the injection pipe and connected at both ends, a push block slidably assembled in the injection cavity, a push rod connected to the upper side of the push block, and a servo electric cylinder that synchronously drives all push rods to extend and retract up and down, the upper half of the injection pipe is provided with a plurality of injection ports connected to the injection cavity, the number of the injection ports is the same as the number of the discharge ports, and a feeding pipe is connected between the two.
2. The ABS raw material mixing equipment according to claim 1, characterized in that: The quantitative feeding assembly also includes two mounting plates vertically fixed on the support frame, the two ends of the sleeve are fixed on the two mounting plates, the motor is fixed on the outside of a mounting plate, the feeding screw is rotatably assembled on the two mounting plates, and a coupling is connected between one end of the feeding screw and the output shaft of the motor.
3. The ABS raw material mixing equipment according to claim 2, characterized in that: The electric cylinder is vertically fixed on the mounting plate, a push plate is provided at the end of the cylinder rod of the electric cylinder, all push rods are fixed on the push plate, an upper touch switch and a lower touch switch are provided on the side wall of the mounting plate, and when the push plate contacts any touch switch, the electric cylinder stops operating.
4. The ABS raw material mixing equipment according to claim 1, characterized in that: A PLC controller is also included, and the motor and the electric cylinder are both controlled and operated by the PLC controller.