Blanking sensing device for plastic raw materials of plastic color matching machine
By introducing a magnetic induction sensor and a swing plate structure into the plastic color matching machine, the machine automatically monitors whether the feed hopper is full and controls the discharge valve, solving the problems of high labor intensity and untimely detection of equipment abnormalities in traditional plastic color matching machines, and realizing automated and efficient production.
Patent Information
- Application Number
- CN202422927443.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-11-29
AI Technical Summary
Traditional plastic color mixing machines lack material discharge sensors in their feed hoppers, requiring workers to monitor them for extended periods, resulting in high labor intensity and an inability to promptly detect abnormalities in the mixing tank and storage tank.
It adopts a magnetic induction sensor and a swing plate structure. By using the combination of magnet and magnetic induction sensor, it can automatically sense whether the feed hopper is full and control the discharge valve through the discharge motor to realize automatic monitoring and abnormal alarm.
It enables automatic sensing and anomaly monitoring of the feed hopper, reducing the labor intensity of workers, timely detection of equipment malfunctions, and improving production efficiency.
Smart Images
Figure CN223589786U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a plastic color matching machine, and in particular to a material feeding sensing device for a plastic color matching machine, belonging to the field of plastic production equipment. Background Technology
[0002] Plastic products are essential in people's lives, such as tableware, tables and chairs, vehicle accessories, and toys. Traditional plastic coloring methods include direct spraying, which is relatively simple but the coloring effect is not good and the color is prone to fading. Therefore, plastic color mixing machines were invented. These machines mainly mix plastic raw materials (plastic granules) and color powder in a certain proportion, stir them to coat the surface of the plastic raw materials with color powder, and then convey them together into the barrel of an injection molding machine for heating and stirring. The plastic color mixing machine mainly consists of a plastic raw material feeding device, a color powder feeding device, a mixing and stirring device, and a storage device. The plastic raw material feeding device includes a feeding hopper with a feeding valve at its lower opening, which connects to the mixing chamber of the plastic color mixing machine. A feeding end cover is located at the top of the feeding hopper, with a discharge port connected to a discharge pipe. Plastic raw materials enter the feeding hopper through the discharge pipe. Existing feeding hoppers lack a discharge sensor; when the hopper is full of plastic raw materials, the sensor cannot detect the material, requiring manual observation and operation of the discharge pipe to stop or stop the flow of plastic raw materials. Furthermore, if the mixing and stirring device, storage device, or injection molding machine's barrel malfunctions, causing the mixing and storage tanks to fill with plastic granules and preventing their delivery to the injection molding machine's barrel, manual observation and monitoring are also required. Workers must constantly monitor the equipment, resulting in high labor intensity. Summary of the Invention
[0003] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a simple material feeding sensing device for plastic raw materials in a plastic color matching machine, which automatically senses the material feeding and monitors abnormal feeding, reduces the labor intensity of workers.
[0004] The technical solution of the material feeding sensing device for a plastic color matching machine of this utility model is as follows: It includes a machine body, a feeding hopper at the top of the machine body, a storage box on one side of the machine body, a mixing box above the storage box, a cover plate on the mixing box, a feeding port in the cover plate, the lower opening of the feeding hopper corresponding to the feeding port, the feeding port communicating with the interior of the mixing box, a feeding end cover at the top of the feeding hopper, a feeding port in the feeding end cover, the feeding port connected to a feeding pipe, a magnetic induction sensor at the top of one side of the feeding end cover, two connecting plates at the bottom of the feeding end cover, a swing plate between the two connecting plates, the two sides of the swing plate being rotatably connected to the connecting plates via a rotating shaft, one end of the swing plate corresponding to the feeding port, and a magnet at the other end of the swing plate corresponding to the magnetic induction sensor.
[0005] Furthermore, the oscillating plate is inverted V-shaped.
[0006] Furthermore, a fixing frame is provided on the feed end cover, and a through hole is opened in the fixing frame. The sensing head of the magnetic induction sensor passes through the through hole and is fixed to the fixing frame.
[0007] Furthermore, a discharge valve is provided in the discharge port, and the discharge valve is rotated by the discharge motor.
[0008] The beneficial effects of this utility model of a plastic raw material feeding sensing device for a plastic color matching machine are as follows: by using one end of a swing plate corresponding to the feeding port and the other end set with a magnet and a magnetic induction sensor on the feeding end cover, it can automatically sense the feeding of the material at the feeding port and whether the feeding hopper is full of plastic raw materials, thus eliminating the need for workers to monitor the equipment for a long time, reducing the labor intensity of workers, and can also sense whether there are any abnormalities in the mixing tank, storage tank or injection molding machine barrel, so as to detect abnormalities in time and facilitate workers to inspect and repair. Attached Figure Description
[0009] Figure 1 This is a three-dimensional schematic diagram of a plastic raw material feeding sensing device for a plastic color matching machine according to this utility model;
[0010] Figure 2 This is a schematic diagram of the structure of a plastic raw material feeding sensing device for a plastic color matching machine according to this utility model;
[0011] Figure 3 yes Figure 2 A schematic diagram of the cross-section along the A-A direction;
[0012] Figure 4 yes Figure 3 A magnified view of part B. Detailed Implementation
[0013] This utility model relates to a material feeding sensing device for a plastic raw material in a plastic color matching machine, such as... Figure 1 — Figure 4As shown, the machine includes a body 1, a feeding hopper 2 at the top of the body 1, a storage tank 3 on one side of the body 1, a mixing tank 4 above the storage tank 3, a cover plate 5 on the mixing tank 4, and a feeding port 51 in the cover plate 5. The lower opening of the feeding hopper 2 corresponds to the feeding port 51, and the feeding port 51 communicates with the interior of the mixing tank 4. A feeding end cover 6 is provided at the top of the feeding hopper 2, and a discharge port 61 is provided in the feeding end cover 6. The discharge port 61 is connected to a discharge pipe. A magnetic induction sensor 62 is provided at the top of one side of the feeding end cover 6. Two connecting plates 63 are provided at the bottom of the feeding end cover 6. A swing plate 64 is provided between the two connecting plates 63. The two sides of the swing plate 64 are rotatably connected to the connecting plates 63 via a rotating shaft. One end of the swing plate 64 corresponds to the discharge port 61, and a magnet 65 is provided at the other end of the swing plate 64. The magnet 65 corresponds to the magnetic induction sensor 62.
[0014] Furthermore, the swing plate 64 is inverted V-shaped.
[0015] Furthermore, a fixing frame 66 is provided on the feed end cover 6, and a through hole 67 is opened in the fixing frame 66. The sensing head of the magnetic induction sensor 62 passes through the through hole 67 and is fixed to the fixing frame 66.
[0016] Furthermore, a discharge valve 68 is provided in the discharge port 61, and the discharge valve 68 is rotated by the discharge motor 69.
[0017] This utility model discloses a material feeding sensing device for a plastic color matching machine. When plastic material is to be fed into the mixing tank 4, the valve located at the feed inlet 51 is opened (the feed inlet 51 is equipped with a valve, the specific structure of which is existing technology). The plastic material in the feed hopper 2 falls into the mixing tank 4 through the feed inlet 51. At this time, the height of the plastic material in the feed hopper 2 decreases, and the magnet 65, under the action of gravity, drives the left side of the swing plate 64 (the side corresponding to the magnetic induction sensor 62) to rotate downward, while the right side of the swing plate 64 (the side corresponding to the material feeding port 61) rotates upward (the magnet 65 is weakly magnetic, and under the action of gravity on one side of the magnet 65...). Under the influence of the magnetic force, it is insufficient to generate a magnetic attraction with the feed end cover 6. At this time, the magnetic induction sensor 62 cannot sense the magnetism of the magnet 65. It controls the feeding motor 69 to work through the control system. The output shaft of the feeding motor 69 drives the feeding valve 68 to rotate and open. The plastic raw material is conveyed into the feed hopper 2 through the feeding pipe and the feeding port 61. When the plastic raw material falls through the feeding port 61, it will contact the right side of the swing plate 64. It pushes the right side of the swing plate 64 to rotate downward and the left side to rotate upward. As the plastic raw material falls continuously, the swing plate 64 swings left and right continuously. The magnet 65 on the left side of the swing plate 64 cannot interact with the magnetic induction sensor. The sensor 62 engages with the material for more than five seconds, thus the discharge port 61 remains in a discharge state. When the amount of plastic material in the mixing tank 4 reaches the specified quantity, the valve of the inlet 51 closes, while the discharge pipe continues to feed plastic material into the feed hopper 2 through the discharge port 61. When the feed hopper 2 is full of plastic material, the plastic material will accumulate above the right side of the oscillating plate 64 (because the plastic material falls from the discharge port 61, it will first fill the area above the side of the oscillating plate 64 corresponding to the discharge port 61), causing the right side of the oscillating plate 64 to rotate downwards and the left side to rotate upwards. The magnet 65 on the left side of the oscillating plate 64 engages with the magnetic induction sensor 62 for more than five seconds. After five seconds, it is confirmed that the feed hopper 2 is full of plastic raw materials. The magnetic induction sensor 62 sends a signal to the control system, which controls the feeding motor 69 to work. The output shaft of the feeding motor 69 drives the feeding valve 68 to rotate and close, stopping the feeding. However, if the magnet 65 and the magnetic induction sensor 62 are in contact for too long (which can be set, usually 3-5 minutes), that is, if the feed hopper 2 has not been feeding plastic raw materials into the mixing tank 4 for a long time, it is confirmed that there is an abnormality in the mixing tank 4, the storage tank 3, or the injection molding machine barrel. The magnetic induction sensor 62 sends a signal to the control system, which issues an alarm to remind the staff to check for abnormalities.This solution provides a material feeding sensing device for a plastic color matching machine. One end of a swing plate 64 corresponds to the feeding port 61, and the other end is equipped with a magnet 65 and a magnetic induction sensor 62 on the feed end cover 6. It can automatically sense the feeding of material at the feeding port 61 and whether the feed hopper 2 is full of plastic material, thus eliminating the need for workers to monitor the equipment for a long time, reducing the labor intensity of workers. It can also sense whether there are any abnormalities in the mixing tank 4, the storage tank 3, or the barrel of the injection molding machine, so as to detect abnormalities in time and facilitate workers to inspect and repair.
Claims
1. A material feeding sensing device for plastic raw materials in a plastic color matching machine, comprising a machine body (1), a feeding hopper (2) provided on the upper part of the machine body (1), a storage box (3) provided on one side of the machine body (1), a mixing box (4) provided above the storage box (3), a cover plate (5) provided on the mixing box (4), a feeding port (51) provided in the cover plate (5), the lower opening of the feeding hopper (2) corresponding to the feeding port (51), the feeding port (51) communicating with the interior of the mixing box (4), a feeding end cover (6) provided on the upper part of the feeding hopper (2), a discharge port (61) provided in the feeding end cover (6), and the discharge port (61) connected to a discharge pipe, characterized in that: A magnetic induction sensor (62) is provided on the upper part of one side of the feed end cover (6). Two connecting pieces (63) are provided at the lower part of the feed end cover (6). A swing piece (64) is provided between the two connecting pieces (63). The two sides of the swing piece (64) are rotatably connected to the connecting piece (63) via a rotating shaft. One end of the swing piece (64) corresponds to the discharge port (61). A magnet (65) is provided on the other end of the swing piece (64). The magnet (65) corresponds to the magnetic induction sensor (62).
2. The material feeding sensing device for a plastic color matching machine as described in claim 1, characterized in that: The swing plate (64) is inverted V-shaped.
3. The material feeding sensing device for a plastic color matching machine as described in claim 1, characterized in that: A fixing frame (66) is provided on the feed end cover (6), and a through hole (67) is opened in the fixing frame (66). The sensing head of the magnetic induction sensor (62) passes through the through hole (67) and is fixed to the fixing frame (66).
4. The material feeding sensing device for a plastic raw material in a plastic color matching machine as described in claim 1, characterized in that: A discharge valve (68) is provided in the discharge port (61), and the discharge valve (68) is rotated by the discharge motor (69).