A drying equipment for injection molding color master batch production
By combining a rotary disc and a three-dimensional hot air system, the problem of uneven drying of bottom materials in injection molding masterbatch production equipment has been solved, achieving a more efficient drying effect and reducing the defect rate.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN BONNY PLASTICS TECH CO LTD
- Filing Date
- 2025-06-20
- Publication Date
- 2026-07-03
AI Technical Summary
In existing injection molding masterbatch production equipment, the bottom material is stationary, resulting in insufficient contact with hot air and uneven drying, which can easily lead to overheating and damage of the surface material.
A rotating disc drives the material hopper to rotate, combined with a three-dimensional hot air supply system. Centrifugal force is used to distribute the material evenly, and heat is supplied to the material surface through air guide pipes and air outlets to ensure uniform contact of hot air.
It significantly improves drying uniformity, avoids insufficient hot air contact caused by the static bottom material, and reduces the defect rate.
Smart Images

Figure CN224446478U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of color masterbatch drying technology, and more specifically to a drying equipment for injection molding color masterbatch production. Background Technology
[0002] Injection molding masterbatch is a new type of special colorant for polymer materials, also known as pigment preparation. Masterbatch is mainly used in plastics. Masterbatch is composed of three basic elements: pigments or dyes, carriers, and additives.
[0003] A Chinese utility model patent with publication number CN220179863U discloses a drying device for injection molding masterbatch production. This device includes a drying chamber shell, a heating mechanism installed at the top of the drying chamber shell, a placement and rotating mechanism installed at the bottom of the drying chamber shell, and a heat regulation mechanism installed on the inner wall of the drying chamber shell. The placement and rotating mechanism is used to place the masterbatch, the heating mechanism is used to dry the masterbatch, and the heat regulation mechanism is used to adjust the amount of hot air from the heating mechanism. The heating mechanism includes a hydraulic cylinder installed at the top of the drying chamber shell. This device can adjust the size of the air vents according to the size of the injection molding masterbatch and the drying requirements, thereby changing the amount of heat that the masterbatch can contact, preventing damage to the masterbatch, and improving the processing effect of the injection molding masterbatch.
[0004] However, the above-mentioned technical solution has a poor drying effect on the masterbatch placed at the bottom of the box during the drying process of injection molding masterbatch. It requires a long drying time to dry the masterbatch at the bottom. However, long drying time can easily cause the masterbatch on the surface to be exposed to too much heat and be burned. Utility Model Content
[0005] The purpose of this invention is to provide a drying equipment for the production of injection molding masterbatch, which solves the problem of insufficient hot air contact caused by the static bottom material in traditional equipment, and significantly improves the uniformity of drying.
[0006] To achieve the above objectives, the technical solution of this utility model is as follows:
[0007] A drying device for injection molding masterbatch production includes a base, on which a rotating disk is rotatably mounted. A centrifugal motor for driving the rotating disk is installed at the bottom of the base. Two uprights are symmetrically arranged on the top of the rotating disk, and a material storage bin is installed between the two uprights. A mounting frame is provided on the base, and a hydraulic cylinder is mounted on the mounting frame. A lifting frame is fixedly connected to the driving end of the hydraulic cylinder. A top cover is provided below the lifting frame, directly opposite the material storage bin. An air outlet pipe is fixedly connected to the lower surface of the top cover. Multiple air outlet holes are opened on the side wall of the air outlet pipe. A hot air blower is mounted on the lifting frame, and the output end of the hot air blower is connected to the air outlet pipe through a guide pipe.
[0008] Furthermore, a pivot is rotatably provided between the outer wall of the material storage bin and the upright frame.
[0009] Furthermore, a flip handle is installed on the outer wall of the material storage bin.
[0010] Furthermore, an annular limiting plate is provided at the bottom edge of the top cover, and the inner diameter of the annular limiting plate is equal to the outer diameter of the material container.
[0011] Furthermore, the inner bottom of the annular limiting plate is chamfered.
[0012] Furthermore, the top cover has multiple air outlet holes, the diameter of which is smaller than the particle size of the masterbatch.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0014] This application uses a centrifugal motor on the base to drive the rotating disc to rotate synchronously, causing the masterbatch inside the bin to form a dynamic distribution under the action of centrifugal force. This avoids the accumulation and compaction of masterbatch at the bottom, solving the problem of insufficient hot air contact caused by the static material at the bottom in traditional equipment, and significantly improving the drying uniformity. The hot air blower supplies heat to the air outlet pipe under the top cover through the air guide pipe, and the air outlet holes evenly distributed on the side wall can blow hot air onto the masterbatch inside the bin, ensuring that the material and the hot air are in full and uniform contact. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is a cross-sectional view of the present invention.
[0017] 1. Base; 2. Rotary disc; 3. Centrifugal motor; 4. Stand; 5. Material hopper; 6. Mounting frame; 7. Hydraulic cylinder; 8. Lifting frame; 9. Top cover; 91. Annular limit plate; 10. Air outlet pipe; 11. Air outlet hole; 12. Hot air blower; 13. Air guide pipe; 14. Rotating shaft; 15. Flip handle; 16. Air outlet hole. Detailed Implementation
[0018] like Figure 1 and Figure 2As shown, a drying device for injection molding masterbatch production includes a base 1, a rotating disk 2 rotatably mounted on the base 1, a centrifugal motor 3 for driving the rotating disk 2 to rotate installed at the bottom of the base 1, two uprights 4 symmetrically arranged on the top of the rotating disk 2, a material storage bin 5 installed between the two uprights 4, a mounting frame 6 on the base 1, a hydraulic cylinder 7 mounted on the mounting frame 6, a lifting frame 8 fixedly connected to the driving end of the hydraulic cylinder 7, a top cover 9 directly opposite the material storage bin 5 on the bottom of the lifting frame 8, an air outlet pipe 10 fixedly connected to the lower surface of the top cover 9, multiple air outlet holes 11 opened on the side wall of the air outlet pipe 10, a hot air blower 12 mounted on the lifting frame 8, and the output end of the hot air blower 12 connected to the air outlet pipe 10 through a guide pipe 13.
[0019] A rotating shaft 14 is rotatably provided between the outer wall of the material storage bin 5 and the upright frame 4; after drying is completed, there is no need to manually pour out the material, and the material can be quickly unloaded by flipping the material storage bin 5.
[0020] A flip handle 15 is installed on the outer wall of the material storage bin 5.
[0021] The bottom edge of the top cover 9 is provided with an annular limiting plate 91, the inner diameter of which is equal to the outer diameter of the material container 5. When the top cover 9 is lowered, the annular limiting plate 91 can quickly align with the material container 5 and restrict its lateral displacement, ensuring that the axis of the top cover 9 and the material container 5 coincides.
[0022] The inner bottom of the annular limiting plate 91 is chamfered.
[0023] The top cover 9 has multiple air outlet holes 16, the size of which is smaller than the particle size of the masterbatch. The air outlet holes 16 allow the moisture and residual heat generated during the drying process to be discharged through the air outlet holes 16, maintaining air convection inside the material container 5, and effectively preventing the masterbatch from being sprayed out with the airflow during rotation, avoiding material waste and internal equipment contamination, and ensuring the cleanliness and integrity of the material during the drying process.
[0024] Working principle:
[0025] The masterbatch to be dried is loaded into the feeding hopper 5. The feeding hopper 5 is adjusted to a vertical position by flipping the handle 15. The centrifugal motor 3 drives the rotating disc 2 to rotate at a low speed, so that the masterbatch is initially dispersed in the hopper to avoid accumulation. The hydraulic cylinder 7 pushes the lifting frame 8 down, and the top cover 9 is precisely fastened to the top of the feeding hopper 5 by the annular limiting plate 91. After the hot air blower 12 is started, the high temperature hot air is delivered to the air outlet pipe 10 through the air guide pipe 13 and sprayed evenly onto the surface of the masterbatch through the air outlet hole 11 on the side wall. At the same time, the centrifugal motor 3 drives the rotating disc 2 to rotate at a set speed, which drives the feeding hopper 5 to rotate, so that the masterbatch is continuously tumbling under the action of centrifugal force. After drying, the hydraulic cylinder 7 lifts the top cover 9, and the operator flips the feeding hopper 5 around the rotating shaft 14 by flipping the handle 15, so that the masterbatch is poured from the hopper into the collection device, completing the entire drying process.
[0026] This invention solves the industry problem of insufficient drying of bottom materials and easy burning of surface materials in existing equipment through the innovative design of "rotational dispersion + three-dimensional hot air", and significantly reduces the defect rate.
[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A drying apparatus for producing injection molding color master batch, characterized by: The device includes a base (1), on which a rotating disk (2) is rotatably mounted. A centrifugal motor (3) for driving the rotating disk (2) to rotate is installed at the bottom of the base (1). Two uprights (4) are symmetrically arranged on the top of the rotating disk (2). A material storage bin (5) is installed between the two uprights (4). An installation frame (6) is provided on the base (1). A hydraulic cylinder (7) is installed on the installation frame (6). A lifting frame (8) is fixedly connected to the driving end of the hydraulic cylinder (7). A top cover (9) is provided below the lifting frame (8) directly opposite the material storage bin (5). An air outlet pipe (10) is fixedly connected to the lower surface of the top cover (9). Multiple air outlet holes (11) are opened on the side wall of the air outlet pipe (10). A hot air blower (12) is installed on the lifting frame (8). The output end of the hot air blower (12) is connected to the air outlet pipe (10) through a guide pipe (13).
2. The drying apparatus for producing injection molding color master batch according to claim 1, characterized in that: A pivot (14) is rotatably provided between the outer wall of the material storage bin (5) and the upright frame (4).
3. The drying apparatus for producing injection molding color master batch according to claim 2, characterized in that: A flip handle (15) is installed on the outer wall of the material storage bin (5).
4. The drying apparatus for producing injection molding color master batch according to claim 1, wherein: The bottom edge of the top cover (9) is provided with an annular limiting plate (91), the inner diameter of which is equal to the outer diameter of the material container (5).
5. The drying apparatus for producing injection molding color master batch according to claim 4, characterized in that: The inner bottom of the annular limiting plate (91) is chamfered.
6. The drying apparatus for producing injection molding color master batch according to claim 1, wherein: The top cover (9) has multiple air outlet holes (16) on its upper surface, and the diameter of the air outlet holes (16) is smaller than the particle size of the masterbatch.