Automatic feeding screw device for plastic processing

Abstract

This utility model discloses an automatic feeding screw device for plastic processing, relating to the field of plastic processing technology. It addresses the problems of clogging and material jamming in feeding devices, and the difficulty in accurately controlling the feeding amount, resulting in poor accuracy and uniformity of feeding. The device includes a conveying cylinder, a feeding screw coaxially rotatably mounted inside the conveying cylinder, a hopper mounted on the conveying cylinder, and a discharge pipe mounted on the conveying cylinder, with a discharge adjustment component installed on the discharge pipe. This utility model uses a variable frequency motor to drive the feeding screw to rotate. The feeding screw drives a transmission rod to rotate via a transmission wheel set, causing the transmission rod to drive a stirring rod to rotate within the hopper, agitating the raw material and preventing jamming and clogging. An electric actuator drives a gear ring to rotate, which in turn drives a rack and pinion to move baffles. The spacing between the four baffles is adjusted to control the amount of raw material passing through.

Description

Technical Field

[0001] This utility model relates to the field of plastic processing technology, specifically an automatic feeding screw device for plastic processing. Background Technology

[0002] In the plastic processing process, the feeding process is one of the key factors affecting production efficiency and product quality. Currently, screw feeding devices are commonly used to realize the automatic feeding of raw materials in plastic processing. A screw feeding device is a device that uses the principle of screw rotation to realize the automated and continuous conveying of materials.

[0003] Existing screw feeding devices have some problems in actual production applications. Specifically, due to the characteristics of plastic raw materials, such as varying particle size and irregular shape, raw material accumulation or blockage can easily occur in the hopper during the feeding process. This significantly reduces the smoothness of raw material conveying and frequently interrupts the feeding process, making it difficult to ensure continuous feeding. At the same time, most devices lack a precise and effective feeding amount control mechanism, making it impossible to flexibly and accurately adjust the feeding amount according to specific processing requirements. This results in poor feeding accuracy and uniformity, failing to meet the requirements of high-quality production.

[0004] Therefore, there is a need for an automatic feeding screw device for plastic processing to solve the problems of easy clogging and material jamming in the existing feeding devices, and poor accuracy and uniformity of feeding due to the difficulty in accurately controlling the feeding amount. Utility Model Content

[0005] The purpose of this utility model is to provide an automatic feeding screw device for plastic processing, so as to solve the problems of easy clogging and material jamming in the feeding device of the prior art, and poor accuracy and uniformity of feeding due to the difficulty in accurately controlling the feeding amount.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic feeding screw device for plastic processing, comprising a conveying cylinder, a feeding screw coaxially and rotatably installed inside the conveying cylinder, a hopper installed on the conveying cylinder, and a discharge pipe installed on the conveying cylinder, wherein the discharge pipe is provided with a discharge adjustment component; The discharge adjustment assembly includes a mounting box coaxially mounted at the bottom of the discharge pipe, an arc-shaped rail coaxially mounted inside the mounting box, a gear ring rotatably mounted inside the arc-shaped rail, four circumferentially distributed racks movably mounted inside the mounting box via a sliding groove, a gear rotatably mounted between the gear ring and the racks, a baffle mounted on the racks, a movable groove opened on one side of the mounting box, a connecting plate mounted on the gear ring and extending out of the movable groove, an electric push rod mounted on one side of the mounting box for pushing the connecting plate, and an auxiliary pipe coaxially mounted on the bottom surface of the mounting box with the same diameter as the discharge pipe.

[0007] It should be noted in the solution that a drive box is installed on one side of the conveying cylinder, and a transmission rod extending into the hopper is rotatably installed inside the drive box. Several uniformly distributed stirring rods are installed on the outer surface of the transmission rod located inside the hopper.

[0008] It is worth noting that one side of the feeding screw extends rotatably into the drive box, and the same transmission wheel set is provided between the outer surface of the feeding screw and the outer surface of the transmission rod located in the drive box.

[0009] Furthermore, it should be noted that a mounting plate is installed on the bottom surface of the drive box, and a variable frequency motor connected to the feeding screw via a coupling is installed on one side of the top surface of the mounting plate.

[0010] In a preferred embodiment, the pitch of the feeding screw gradually increases from the inlet end to the outlet end, and each gear is meshed with a gear ring and a corresponding rack.

[0011] In a preferred embodiment, the electric actuator is rotatably connected to the mounting box, and the output end of the electric actuator is rotatably connected to the connecting plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are: A variable frequency motor drives the feeding screw to rotate, which in turn drives the transmission rod to rotate via a transmission wheel set. This causes the transmission rod to rotate the stirring rod inside the hopper, agitating the raw materials and preventing jamming and clogging. This improves the smoothness of the raw materials entering the conveying cylinder from the hopper. An electric push rod drives the gear ring to rotate, which in turn drives the rack and pinion plates to move via gears. The spacing between the four baffles is adjusted to control the amount of raw materials passing through. The feeding amount can be precisely controlled according to different processing requirements, effectively avoiding the problems of clogging and jamming that are common in feeding devices, as well as the difficulty in accurately controlling the feeding amount, which leads to poor accuracy and uniformity in feeding. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a front view sectional structural diagram of the conveying cylinder, hopper, and drive box of this utility model; Figure 3 This is a side view of the mounting box of this utility model; Figure 4 This is a top view sectional structural diagram of the mounting box of this utility model.

[0014] The following are the labels in the diagram: 1. Conveying cylinder; 2. Feeding screw; 3. Hopper; 4. Discharge pipe; 5. Discharge adjustment assembly; 51. Mounting box; 52. Arc rail; 53. Gear ring; 54. Rack; 55. Gear; 56. Baffle; 57. Movable groove; 58. Connecting plate; 59. Electric actuator; 510. Auxiliary pipe; 6. Drive box; 7. Transmission rod; 8. Agitating rod; 9. Transmission wheel set; 10. Mounting plate; 11. Variable frequency motor. Detailed Implementation

[0015] 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.

[0016] Example: Figures 1-4 As shown, this utility model provides a technical solution, including a conveying cylinder 1, a feeding screw 2 coaxially and rotatably installed inside the conveying cylinder 1, a hopper 3 installed on the conveying cylinder 1, and a discharge pipe 4 installed on the conveying cylinder 1, with a discharge adjustment component 5 provided on the discharge pipe 4. The discharge adjustment assembly 5 includes a mounting box 51 coaxially mounted at the bottom end of the discharge pipe 4, an arc-shaped rail 52 coaxially mounted inside the mounting box 51, a toothed ring 53 rotatably mounted inside the arc-shaped rail 52, four circumferentially distributed racks 54 movably mounted inside the mounting box 51 via a sliding groove, a gear 55 rotatably mounted between the toothed ring 53 and the racks 54, a baffle 56 mounted on the racks 54, a movable groove 57 opened on one side of the mounting box 51, a connecting plate 58 mounted on the toothed ring 53 and extending out of the movable groove 57, an electric push rod 59 mounted on one side of the mounting box 51 for pushing the connecting plate 58, and an auxiliary pipe 510 coaxially mounted on the bottom surface of the mounting box 51 and having the same diameter as the discharge pipe 4.

[0017] Specifically, when the raw material is conveyed to the discharge pipe 4 by the feeding screw 2, the connecting plate 58 is moved by the electric push rod 59 according to the specific processing requirements, which drives the gear ring 53 to rotate. The gear ring 53 drives the gear 55 to rotate, thereby driving the corresponding rack 54 to move. The rack 54 drives the baffle 56 to move, adjusting the distance between the four baffles 56, thereby achieving precise control of the amount of raw material fed.

[0018] Further as Figure 2 As shown, it is worth noting that a drive box 6 is installed on one side of the conveying cylinder 1. A transmission rod 7 extending into the hopper 3 is rotatably installed inside the drive box 6. Several evenly distributed stirring rods 8 are installed on the outer surface of the transmission rod 7 located inside the hopper 3.

[0019] Specifically, when the transmission rod 7 inside the drive box 6 rotates, it drives several stirring rods 8 to rotate inside the hopper 3, stirring the plastic raw materials in the hopper 3 to prevent material jamming and blockage, and to improve the smoothness of the raw materials entering the conveying cylinder 1 from the hopper 3.

[0020] Further as Figure 2 As shown, it is worth noting that one side of the feeding screw 2 extends into the drive box 6, and the same transmission wheel set 9 is provided between the outer surface of the feeding screw 2 and the outer surface of the transmission rod 7 located in the drive box 6.

[0021] Specifically, when the feeding screw 2 rotates to convey the raw materials, the transmission wheel set 9 drives the transmission rod 7 to rotate, which in turn drives several stirring rods 8 to rotate in the hopper 3 to achieve the above operation.

[0022] Further as Figure 1 As shown, it is worth noting that a mounting plate 10 is installed on the bottom surface of the drive box 6, and a variable frequency motor 11 connected to the feeding screw 2 via a coupling is installed on one side of the top surface of the mounting plate 10.

[0023] Specifically, the variable frequency motor 11 drives the feeding screw 2 to rotate, conveying the plastic raw material. At the same time, the transmission wheel set 9 drives the transmission rod 7 to rotate, preventing the raw material from getting stuck in the hopper 3.

[0024] Further as Figure 2 and Figure 4 As shown, it is worth noting that the pitch of the feed screw 2 gradually increases from the feed end to the discharge end, and each gear 55 is meshed with the gear ring 53 and the corresponding rack 54.

[0025] Specifically, the pitch of the feed screw 2 gradually increases from the feed end to the discharge end, so that the raw material can move forward evenly and stably during the conveying process. Each gear 55 is meshed with the gear ring 53 and the corresponding rack 54, so that when the gear ring 53 rotates, the gear 55 drives the rack 54 to move the baffle 56.

[0026] Further as Figure 3 and Figure 4 As shown, it is worth noting that the electric actuator 59 is rotatably connected to the mounting box 51, and the output end of the electric actuator 59 is rotatably connected to the connecting plate 58.

[0027] Specifically, the electric actuator 59 is rotatably connected to the mounting box 51, and the output end of the electric actuator 59 is rotatably connected to the connecting plate 58 to avoid interference problems caused by structural limitations when the electric actuator 59 pushes the connecting plate 58 to rotate the gear ring 53.

[0028] In summary: When using this device, after connecting the auxiliary pipe 510 to the feed end of the processing device, the plastic raw material is fed into the hopper 3. The controller sets and starts the variable frequency motor 11. After starting, the variable frequency motor 11 drives the feeding screw 2 to rotate. Under the rotation of the feeding screw 2, the plastic raw material is stably conveyed towards the discharge pipe 4. At the same time, when the feeding screw 2 rotates, it drives the transmission rod 7 to rotate through the transmission wheel set 9, which in turn drives the stirring rod 8 to rotate, stirring the plastic raw material in the hopper 3. This prevents the accumulation or blockage of raw material in the hopper 3, improves the smoothness of the plastic raw material entering the conveying cylinder 1 from the hopper 3, and ensures the continuity of feeding. When the material reaches the discharge pipe 4, the electric actuator 59 is activated to move the connecting plate 58 according to actual needs. The connecting plate 58 drives the gear ring 53 to rotate, thereby driving the four gears 55 to rotate under meshing action. When the four gears 55 rotate, they drive the four racks 54 to move, which in turn drives the four baffles 56 to move. The distance between the four baffles 56 is adjusted to control the amount of raw material passing through. Finally, the raw material flows into the processing device through the auxiliary pipe 510 for processing. The operation is simple and the feeding amount can be precisely controlled according to different processing requirements. It effectively avoids the problems of clogging and jamming of the feeding device during use, and the problem of poor accuracy and uniformity of feeding due to the difficulty in accurately controlling the feeding amount.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An automatic feeding screw device for plastic processing, comprising a conveying cylinder (1), a feeding screw (2) coaxially and rotatably mounted inside the conveying cylinder (1), a hopper (3) mounted on the conveying cylinder (1), and a discharge pipe (4) mounted on the conveying cylinder (1), characterized in that: The discharge pipe (4) is provided with a discharge adjustment component (5); The discharge adjustment assembly (5) includes a mounting box (51) coaxially mounted at the bottom of the discharge pipe (4), an arc-shaped rail (52) coaxially mounted in the mounting box (51), a toothed ring (53) rotatably mounted in the arc-shaped rail (52), four circumferentially distributed racks (54) movably mounted in the mounting box (51) via a sliding groove, a gear (55) rotatably mounted between the toothed ring (53) and the racks (54), a baffle (56) mounted on the racks (54), a movable groove (57) opened on one side of the mounting box (51), a connecting plate (58) mounted on the toothed ring (53) and extending out of the movable groove (57), an electric push rod (59) mounted on one side of the mounting box (51) for pushing the connecting plate (58), and an auxiliary pipe (510) coaxially mounted on the bottom surface of the mounting box (51) and having the same diameter as the discharge pipe (4).

2. The automatic feeding screw device for plastic processing according to claim 1, characterized in that: A drive box (6) is installed on one side of the conveying cylinder (1). A transmission rod (7) extending into the hopper (3) is rotatably installed inside the drive box (6). Several uniformly distributed stirring rods (8) are installed on the outer surface of the transmission rod (7) located in the hopper (3).

3. The automatic feeding screw device for plastic processing according to claim 2, characterized in that: One side of the feeding screw (2) extends rotatably into the drive box (6), and the same transmission wheel set (9) is provided between the outer surface of the feeding screw (2) and the outer surface of the transmission rod (7) located in the drive box (6).

4. The automatic feeding screw device for plastic processing according to claim 3, characterized in that: The bottom surface of the drive box (6) is equipped with a mounting plate (10), and a variable frequency motor (11) connected to the feeding screw (2) via a coupling is installed on one side of the top surface of the mounting plate (10).

5. The automatic feeding screw device for plastic processing according to claim 4, characterized in that: The pitch of the feed screw (2) gradually increases from the feed end to the discharge end, and each gear (55) meshes with the gear ring (53) and the corresponding rack (54).

6. The automatic feeding screw device for plastic processing according to claim 1, characterized in that: The electric actuator (59) is rotatably connected to the mounting box (51), and the output end of the electric actuator (59) is rotatably connected to the connecting plate (58).

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