A feeding device for plastic processing
By setting up a mixing chamber and a metering chamber in the feeding device for plastic processing, and utilizing the cooperation of cross stirring rods and rotating disks, the problems of plastic raw material agglomeration and uneven feeding are solved, achieving uniform mixing and precise feeding, and improving the stability and efficiency of plastic processing.
Patent Information
- Application Number
- CN202521381567.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-02
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-07-02
AI Technical Summary
Plastic raw materials are prone to clumping due to moisture or static electricity during processing, which can cause hopper blockage and uneven feeding, affecting the stability of extrusion or injection molding. Existing stirring hoppers have problems with dead corners and lack of coordination between stirring and feeding.
Design a feeding device for plastic processing, comprising a stirring chamber and a metering chamber in a hopper, using first and second rollers with stirring rods, driven by meshing gears for cross stirring, and combined with the intermittent rotation of a rotating disk to achieve metered feeding, and equipped with guide walls and baffles to optimize material flow.
It achieves uniform mixing and precise feeding of plastic raw materials, improves the stability and efficiency of the processing, avoids problems such as hopper blockage and uneven feeding, and ensures the continuity and quality of plastic processing.
Smart Images
Figure CN224928296U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic processing equipment technology, and in particular to a feeding device for plastic processing. Background Technology
[0002] Plastic processing is the process of taking plastic raw materials such as synthetic resins or natural resins and making them into plastic products with specific shapes, properties and uses through a series of processes such as molding, processing and modification. Common plastic processing technologies include extrusion molding, injection molding and blow molding, which are widely used in many fields such as packaging, construction, automobiles, and electronics.
[0003] In the plastic processing process, raw materials often clump together due to moisture or static electricity. Traditional hoppers rely solely on gravity for material feeding, which can easily cause blockages and requires manual intervention. At the same time, uneven material feeding can affect the stability of subsequent extrusion or injection molding. Existing stirring hoppers mostly use single-shaft stirring, which creates dead zones, and the stirring and feeding are not coordinated, resulting in low efficiency. Utility Model Content
[0004] To address the technical problems existing in the background art, this utility model proposes a feeding device for plastic processing.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A feeding device for plastic processing includes a hopper, wherein the hopper has a feed inlet at the top and a discharge outlet at the bottom, characterized in that:
[0007] The hopper is provided with a stirring chamber and a metering chamber in sequence along the material flow direction;
[0008] The mixing chamber is provided with a first roller shaft and a second roller shaft arranged in parallel. Multiple first stirring rods are evenly fixed around the first roller shaft, and multiple second stirring rods are evenly fixed around the second roller shaft. The ends of the first roller shaft and the second roller shaft that are in the same direction pass through the side wall of the hopper and are fixedly connected to a first gear and a second gear that mesh with each other.
[0009] A rotating disk is horizontally mounted inside the quantitative cavity, and at least three storage slots for accommodating plastic raw materials are evenly opened along the circumference of the rotating disk.
[0010] The hopper is equipped with a first motor and a second motor on its exterior.
[0011] The output shaft of the first motor is connected to the first roller shaft for driving the first roller shaft to rotate, and drives the second roller shaft to rotate synchronously in opposite directions through the meshing of the first gear and the second gear, so that the first stirring rod and the second stirring rod cross each other during the rotation process;
[0012] The output shaft of the second motor is connected to the rotating shaft of the rotating disk to drive the rotating disk to rotate intermittently so that the storage trough passes under the discharge port in sequence.
[0013] Preferably, a guide wall is provided at the connection between the stirring chamber and the metering chamber. The guide wall extends downward from the stirring chamber toward the metering chamber at an angle, and the angle formed by the guide wall and the horizontal plane is an acute angle.
[0014] Preferably, it further includes a partition; the partition is horizontally disposed between the stirring chamber and the metering chamber, and the projection of the partition in the vertical direction completely covers the top opening of the metering chamber.
[0015] Preferably, the top surface of the partition is a convex arc-shaped curved surface that is symmetrical about the axis of the hopper.
[0016] Preferably, the first stirring rod and / or the second stirring rod comprises:
[0017] A U-shaped bar extending axially along the corresponding roller shaft; and
[0018] Multiple wave rods;
[0019] The two ends of the U-shaped rod are respectively fixedly connected to the outer wall of the first roller shaft or the second roller shaft;
[0020] The plurality of wave-shaped bars are arranged at equal intervals along the extension direction of the U-shaped bar;
[0021] The first end of each of the wave rods is fixedly connected to the outer wall of the first roller or the second roller, and the second end is fixedly connected to the inner wall of the U-shaped rod.
[0022] Preferably, the extension direction of the wave bar forms an angle α with the radial direction of the corresponding roller shaft, and 30°≤α≤60°; the peak height of the wave bar is H, and the opening width of the U-shaped bar is W, satisfying H≤0.5W.
[0023] Preferably, a material discharge channel is formed between the end edge of the convex arc surface of the partition and the upper end of the guide wall, and the material discharge channel covers the entire width of the mixing chamber in the horizontal direction; the mixed material is guided by the convex arc surface of the partition to the material discharge channel, and slides down onto the guide wall through the material discharge channel.
[0024] Compared with the prior art, the beneficial effects of this utility model are:
[0025] Compared with existing technologies, by setting up a stirring chamber and a metering chamber, uniform stirring and precise feeding of plastic raw materials are achieved respectively. The first and second rollers in the stirring chamber are driven by meshing gears, so that the first and second stirring rods cross each other during rotation, which can fully stir the plastic raw materials and improve the mixing effect. The rotating disk in the metering chamber rotates intermittently under the drive of a second motor, and precise metering is achieved through the storage trough. At the same time, the setting of additional structures such as guide walls, partitions, and specially structured stirring rods further optimizes the flow and stirring effect of materials, improves the overall performance of the feeding device, and ensures the stability and efficiency of the plastic processing process. Attached Figure Description
[0026] Figure 1 This is a front view of the feeding device for plastic processing proposed in this utility model;
[0027] Figure 2 This is a rear view of the feeding device for plastic processing proposed in this utility model;
[0028] Figure 3 This is a cross-sectional view of the feeding device for plastic processing proposed in this utility model;
[0029] Figure 4 This is a schematic diagram of the structure of the first stirring rod / second stirring rod in the feeding device for plastic processing proposed in this utility model.
[0030] In the figure: 1-hopper, 101-mixing chamber, 102-quantitative chamber, 103-partition, 104-guide wall, 2-first roller shaft, 3-second roller shaft, 4-first gear, 5-second gear, 6-first motor, 7-second motor, 8-rotating disk, 801-storage trough, 802-rotating shaft, 9-first mixing rod, 10-second mixing rod. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0032] like Figures 1-4 As shown, this embodiment provides a feeding device for plastic processing, including a hopper 1, wherein the hopper 1 has a feeding port at the top and a discharging port at the bottom, characterized in that:
[0033] The hopper 1 is provided with a stirring chamber 101 and a metering chamber 102 in sequence along the material flow direction;
[0034] The mixing chamber 101 is provided with a first roller 2 and a second roller 3 arranged in parallel. Multiple first stirring rods 9 are uniformly fixed around the first roller 2, and multiple second stirring rods 10 are uniformly fixed around the second roller 3. One end of the first roller 2 and the second roller 3 in the same direction passes through the side wall of the hopper 1 and is fixedly connected to a first gear 4 and a second gear 5 that mesh with each other.
[0035] A rotating disk 8 is horizontally rotatably installed inside the quantitative cavity 102. At least three storage slots 801 for accommodating plastic raw materials are evenly opened along the circumference of the rotating disk 8.
[0036] The hopper 1 is equipped with a first motor 6 and a second motor 7 on its exterior.
[0037] The output shaft of the first motor 6 is connected to the first roller shaft 2 for driving the first roller shaft 2 to rotate, and drives the second roller shaft 3 to rotate synchronously in opposite directions through the meshing of the first gear 4 and the second gear 5, so that the first stirring rod 9 and the second stirring rod 10 cross each other during the rotation process;
[0038] The output shaft of the second motor 7 is connected to the rotating shaft 802 of the rotating disk 8 for driving the rotating disk 8 to rotate intermittently so that the storage trough 801 passes under the discharge port in sequence.
[0039] Overall, the material is introduced into the mixing chamber 101 inside the hopper 1. The first motor 6 is started to drive the first roller shaft 2 to rotate. Through the meshing between the first gear 4 and the second gear 5, the second roller shaft 3 is driven to rotate synchronously in opposite directions. The first stirring rod 9 and the second stirring rod 10 cross each other during rotation, thus completing the mixing of the material. After mixing, the material enters the metering chamber 102 along the flow direction. The second motor 7 is started to drive the rotating shaft 802 to rotate, realizing the intermittent rotation of the rotating disk 8. The rotating disk 8 rotates one-third of a turn, allowing the material in the storage trough 801 to pass under the discharge port, thus realizing the feeding of the material.
[0040] like Figure 3 As shown, in this embodiment, a guide wall 104 is provided at the connection between the stirring chamber 101 and the metering chamber 102. The guide wall 104 extends downward from the stirring chamber 101 to the metering chamber 102 at an angle, and the angle formed between the guide wall 104 and the horizontal plane is an acute angle.
[0041] Specifically, a guide wall 104 is provided at the connection between the mixing chamber 101 and the metering chamber 102. The guide wall 104 extends downward from the mixing chamber 101 to the metering chamber 102 at an angle of 30° with the horizontal plane. The guide wall 104 can guide the mixed material smoothly from the mixing chamber 101 into the metering chamber 102, avoid the accumulation of material at the connection, ensure the smooth flow of material, and make the feeding process more stable.
[0042] like Figure 3 As shown, in this embodiment, a partition 103 is also included; the partition 103 is horizontally disposed between the stirring chamber 101 and the metering chamber 102, and the projection of the partition 103 in the vertical direction completely covers the top opening of the metering chamber 102.
[0043] By adding a partition 103 between the mixing chamber 101 and the metering chamber 102, and the vertical projection of the partition 103 completely covers the top opening of the metering chamber 102, the partition 103 effectively prevents the material from falling directly into the metering chamber 102 during the mixing process, ensuring that the material is fully mixed in the mixing chamber 101, further improving the mixing uniformity of the material, and providing a better foundation for subsequent precise feeding.
[0044] like Figure 3 As shown, in this embodiment, the top surface of the partition 103 is a convex arc-shaped curved surface that is symmetrical about the axis of the hopper 1.
[0045] Specifically, the top surface of the baffle 103 is a convex arc-shaped curved surface that is symmetrical about the axis of the hopper 1. The design of the convex arc-shaped curved surface helps to better guide the mixed material to the discharge channel. Compared with the flat baffle 103, the material can enter the metering chamber 102 from the mixing chamber 101 more quickly and smoothly, which improves the feeding efficiency, reduces the residence time of the material at the baffle 103, and avoids material accumulation.
[0046] like Figures 3-4 As shown, in this embodiment, the first stirring rod 9 and / or the second stirring rod 10 include:
[0047] A U-shaped bar extending axially along the corresponding roller shaft; and
[0048] Multiple wave rods;
[0049] The two ends of the U-shaped rod are respectively fixedly connected to the outer wall of the first roller 2 or the second roller 3;
[0050] The plurality of wave-shaped bars are arranged at equal intervals along the extension direction of the U-shaped bar;
[0051] The first end of each of the wave rods is fixedly connected to the outer wall of the first roller 2 or the second roller 3, and the second end is fixedly connected to the inner wall of the U-shaped rod.
[0052] Specifically, both the first stirring rod 9 and the second stirring rod 10 include a U-shaped rod extending along the axial direction of the corresponding roller shaft and multiple corrugated rods. The two ends of the U-shaped rod are fixedly connected to the outer wall of the first roller shaft 2 or the second roller shaft 3, respectively. The multiple corrugated rods are arranged at equal intervals along the extension direction of the U-shaped rod. The first end of each corrugated rod is fixedly connected to the outer wall of the first roller shaft 2 or the second roller shaft 3, and the second end is fixedly connected to the inner wall of the U-shaped rod. This structure of the stirring rod greatly increases the contact area with the material. During the stirring process, the material can be stirred from multiple angles, making the plastic raw materials more uniformly mixed and effectively improving the stirring effect.
[0053] like Figure 4 As shown, in this embodiment, the extension direction of the wave bar forms an angle α with the radial direction of the corresponding roller shaft, and 30°≤α≤60°; the peak height of the wave bar is H, and the opening width of the U-shaped bar is W, satisfying H≤0.5W.
[0054] Specifically, the extension direction of the corrugated rod forms an angle α of 45° with the radial direction of the corresponding roller shaft, the crest height of the corrugated rod is H, and the opening width of the U-shaped rod is W, satisfying H = 0.4W. This parameter setting ensures that the stirring rod can generate sufficient stirring force to fully stir the material during the stirring process, without causing excessive damage to the material due to excessive stirring force, thus guaranteeing the physical properties of the material and further optimizing the stirring effect.
[0055] like Figure 3 As shown, in this embodiment, a material discharge channel is formed between the end edge of the convex arc surface of the partition 103 and the upper end of the guide wall 104. The material discharge channel covers the entire width of the mixing chamber 101 in the horizontal direction. The mixed material is guided to the material discharge channel through the convex arc surface of the partition 103 and slides down onto the guide wall 104 through the material discharge channel.
[0056] By forming a material discharge channel between the end edge of the convex arc surface of the partition 103 and the upper end of the guide wall 104, and the material discharge channel covering the entire width of the mixing chamber 101 in the horizontal direction; the mixed material is guided by the convex arc surface of the partition 103 to the material discharge channel, and slides down onto the guide wall 104 through the material discharge channel. This design allows the material to enter the metering chamber 102 from the mixing chamber 101 in a more orderly manner, ensuring the stability and accuracy of the feeding process and improving the working performance of the entire feeding device.
[0057] Of course, those skilled in the art will recognize that this invention is not limited to the details of the exemplary embodiments described above, but also includes the same or similar structures that can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0058] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
[0059] The technologies, shapes, and structures not described in detail in this utility model are all known technologies.
Claims
1. A feeding device for plastic processing, comprising a hopper (1), wherein the hopper (1) has a feed inlet at the top and a discharge outlet at the bottom, characterized in that: The hopper (1) is provided with a stirring chamber (101) and a metering chamber (102) in sequence along the material flow direction; The mixing chamber (101) is provided with a first roller shaft (2) and a second roller shaft (3) arranged in parallel. Multiple first stirring rods (9) are evenly fixed around the first roller shaft (2), and multiple second stirring rods (10) are evenly fixed around the second roller shaft (3). One end of the first roller shaft (2) and the second roller shaft (3) in the same direction passes through the side wall of the hopper (1) and is fixedly connected to a first gear (4) and a second gear (5) that mesh with each other. A rotating disk (8) is horizontally rotatably installed inside the metering cavity (102). At least three storage slots (801) for accommodating plastic raw materials are evenly opened along the circumference of the rotating disk (8). The hopper (1) is equipped with a first motor (6) and a second motor (7) on its exterior; The output shaft of the first motor (6) is connected to the first roller shaft (2) for driving the first roller shaft (2) to rotate, and through the meshing of the first gear (4) and the second gear (5) to drive the second roller shaft (3) to rotate synchronously in opposite directions, so that the first stirring rod (9) and the second stirring rod (10) cross each other during the rotation process; The output shaft of the second motor (7) is connected to the rotating shaft (802) of the rotating disk (8) to drive the rotating disk (8) to rotate intermittently so that the storage trough (801) passes under the discharge port in sequence.
2. The feeding device for plastic processing according to claim 1, characterized in that, A guide wall (104) is provided at the connection between the stirring chamber (101) and the metering chamber (102). The guide wall (104) extends downward from the stirring chamber (101) to the metering chamber (102), and the angle formed between the guide wall (104) and the horizontal plane is an acute angle.
3. The feeding device for plastic processing according to claim 2, characterized in that, It also includes a partition (103); the partition (103) is horizontally disposed between the stirring chamber (101) and the metering chamber (102), and the projection of the partition (103) in the vertical direction completely covers the top opening of the metering chamber (102).
4. The feeding device for plastic processing according to claim 3, characterized in that, The top surface of the partition (103) is a convex arc-shaped surface that is symmetrical about the axis of the hopper (1).
5. The feeding device for plastic processing according to claim 1, characterized in that, The first stirring rod (9) and / or the second stirring rod (10) include: A U-shaped bar extending axially along the corresponding roller shaft; and Multiple wave rods; The two ends of the U-shaped rod are respectively fixedly connected to the outer wall of the first roller shaft (2) or the second roller shaft (3); The plurality of wave-shaped bars are arranged at equal intervals along the extension direction of the U-shaped bar; The first end of each of the wave rods is fixedly connected to the outer wall of the first roller (2) or the second roller (3), and the second end is fixedly connected to the inner wall of the U-shaped rod.
6. The feeding device for plastic processing according to claim 5, characterized in that, The extension direction of the wave bar forms an angle α with the radial direction of the corresponding roller shaft, and 30°≤α≤60°; the peak height of the wave bar is H, and the opening width of the U-shaped bar is W, satisfying H≤0.5W.
7. The feeding device for plastic processing according to claim 4, characterized in that, A material discharge channel is formed between the end edge of the convex arc surface of the partition (103) and the upper end of the guide wall (104). The material discharge channel covers the entire width of the mixing chamber (101) in the horizontal direction. The mixed material is guided to the material discharge channel by the convex arc surface of the partition (103) and slides down onto the guide wall (104) through the material discharge channel.