A plastic extruder with auxiliary feeding function

Abstract

This utility model relates to the field of plastic extruder technology and discloses a plastic extruder with auxiliary feeding function. The plastic extruder with auxiliary feeding function includes an extruder body, a feeding hopper on the top end face of the extruder body, and an auxiliary feeding assembly on the top end face of the extruder body. In this plastic extruder with auxiliary feeding function, the temporary storage cylinder receives and discharges material sequentially according to the cycle, avoiding pressure fluctuations or jamming caused by a large influx of particles. The plastic particles enter the extruder in batches rather than continuously, which facilitates pressure control at the screw tip, prevents feeding impact, and improves the stability of extrusion molding. The rotational motion of the stirring arc plate can break up adhesion or jamming between particles, preventing plastic particles from bridging or accumulating in the temporary storage cylinder and preventing material concentration on one side or local deposition, thus preventing poor discharge or blockage of the temporary storage cylinder and ensuring more uniform and stable particle output in each round.

Description

Technical Field

[0001] This utility model relates to the field of plastic extruder technology, specifically a plastic extruder with auxiliary feeding function. Background Technology

[0002] Screw extruders rely on the pressure and shear force generated by the rotation of the screw to fully plasticize and uniformly mix materials, which are then formed through a die. Plastic extruders can be basically classified into twin-screw extruders, single-screw extruders, multi-screw extruders, and screwless extruders.

[0003] According to a public announcement of an extruder with a feeding function (Announcement No.: CN220700333U), the above application includes an extruder body, a chute on the upper side of the extruder body, a feed hopper connected to the upper side of the extruder body, an anti-blocking component connected to the upper side of the extruder body, the anti-blocking component including a motor, a rotating rod connected to the upper side of the motor, a rotating shaft connected to the upper side of the rotating rod, and a moving plate slidably sleeved on the outer wall of the rotating shaft.

[0004] However, the above-mentioned extruders lack a metering device, and the amount of raw material fed depends on manual feeding or the natural falling of the feed hopper, which can easily lead to overfeeding, increased extruder load, blockage, and increased back pressure, directly affecting the dimensional accuracy and density of the products. In view of this, we propose a plastic extruder with auxiliary feeding function. Utility Model Content

[0005] The purpose of this invention is to provide a plastic extruder with an auxiliary feeding function to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a plastic extruder with auxiliary feeding function, comprising an extruder body, a feeding hopper provided on the top end face of the extruder body, and an auxiliary feeding assembly provided on the top end face of the extruder body, the auxiliary feeding assembly comprising: A fixed cylinder, wherein a feed inlet is provided inside the fixed cylinder, and teeth are fixedly connected to the bottom surface of the fixed cylinder; An electric motor, wherein a rotating shaft is fixedly connected to the output end of the motor, and a drive gear is fixedly connected to the side wall of the rotating shaft; A driven gear is fixedly connected to a rotating rod at its top end face. A turntable is fixedly connected to the top end face of the rotating rod. A stirring arc plate is fixedly connected to the top end face of the turntable. The rotating rod is sleeved with a temporary storage cylinder.

[0007] Preferably, a bracket is fixedly connected to the top end face of the extruder body, the bracket is fixedly connected to the fixed cylinder, and a discharge port is opened on the side wall of the extruder body, the discharge port being located above the feeding hopper.

[0008] Preferably, the motor is fixedly connected to the top end face of the extruder body, and the rotating shaft is rotatably connected to the inner bottom surface of the fixed cylinder.

[0009] Preferably, the driven gear meshes with the driving gear, and the driven gear meshes with the teeth, so that the rotation of the driving gear drives the driven gear to rotate on its own axis and revolve around the driving gear.

[0010] Preferably, the turntable is rotatably connected to the inner bottom surface of the temporary storage cylinder, and the top end face of the turntable is flush with the inner bottom surface of the temporary storage cylinder.

[0011] Preferably, a shield is fixedly connected to the top of the temporary storage cylinder, and the shield is movably connected to the feed inlet.

[0012] Preferably, the top end face of the turntable has a slot, which is inserted into the placeholder block.

[0013] Compared with the prior art, this utility model provides a plastic extruder with auxiliary feeding function, which has the following beneficial effects: 1. This plastic extruder with auxiliary feeding function uses an auxiliary feeding component to sequentially receive and discharge materials in the temporary storage cylinder according to the cycle, avoiding material pressure fluctuations or jamming caused by a large number of particles rushing in instantly. The plastic particles enter the extruder in batches rather than continuously, which is beneficial for the pressure control at the front end of the screw, prevents feeding impact, and improves the stability of extrusion molding. The rotational motion of the stirring arc plate can break up the adhesion or obstruction between particles, preventing plastic particles from bridging or accumulating in the temporary storage cylinder and not discharging. The stirring action makes the particles roll and flow continuously in the temporary storage cylinder, avoiding material concentration to one side or local deposition, preventing poor discharge or blockage of the temporary storage cylinder, and ensuring that the particles output in each round are more uniform and stable.

[0014] 2. This plastic extruder with auxiliary feeding function can adapt to materials of different densities, flowability or particle size by setting up a stationary block to change the effective volume of the temporary storage cylinder, thereby achieving precise control of the feeding amount in each round, and is suitable for the needs of different working conditions or product specifications. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of the present utility model; Figure 2 This is a schematic diagram of the auxiliary feeding component structure of this utility model; Figure 3 This is an exploded view of the fixed cylinder of this utility model; Figure 4 This is a schematic diagram of the stirring arc plate structure of this utility model.

[0016] In the diagram: 1. Extruder body; 2. Feed hopper; 3. Auxiliary feeding assembly; 301. Fixed cylinder; 302. Feed inlet; 303. Motor; 304. Rotating shaft; 305. Drive gear; 306. Gear teeth; 307. Driven gear; 308. Turntable; 309. Stirring arc plate; 310. Temporary storage cylinder; 4. Discharge port; 5. Baffle frame; 6. Slot; 7. Placeholder block; 8. Support. Detailed Implementation

[0017] like Figures 1-4 As shown, this utility model provides a technical solution: a plastic extruder with auxiliary feeding function, including an extruder body 1, a feeding hopper 2 provided on the top end face of the extruder body 1, and an auxiliary feeding component 3 provided on the top end face of the extruder body 1. The auxiliary feeding component 3 includes a fixed cylinder 301, a feed inlet 302, a motor 303, a rotating shaft 304, a drive gear 305, teeth 306, a driven gear 307, a turntable 308, a stirring arc plate 309, and a temporary storage cylinder 310.

[0018] In one embodiment of the present invention, a bracket 8 is fixedly connected to the top end face of the extruder body 1, the bracket 8 is fixedly connected to the fixed cylinder 301, a discharge port 4 is opened on the side wall of the extruder body 1, the discharge port 4 is located above the feeding hopper 2, a feeding port 302 is opened inside the fixed cylinder 301, and teeth 306 are fixedly connected to the bottom surface of the inner side of the fixed cylinder 301. The motor 303 is fixedly connected to the top end face of the extruder body 1. The output end of the motor 303 is fixedly connected to the rotating shaft 304. The side wall of the rotating shaft 304 is fixedly connected to the drive gear 305. The rotating shaft 304 is rotatably connected to the inner bottom surface of the fixed cylinder 301.

[0019] Driven gear 307 is disposed on the inner bottom surface of fixed cylinder 301. Driven gear 307 meshes with driving gear 305 and teeth 306, so that driving gear 305 rotates to drive driven gear 307 to rotate on its own axis and revolve around driving gear 305. A rotating rod is fixedly connected to the top end face of driven gear 307. A turntable 308 is fixedly connected to the top end face of rotating rod. A stirring arc plate 309 is fixedly connected to the top end face of turntable 308. Rotating rod is sleeved with temporary storage cylinder 310. Turntable 308 is rotatably connected to the inner bottom surface of temporary storage cylinder 310. The top end face of turntable 308 is flush with the inner bottom surface of temporary storage cylinder 310. A baffle 5 is fixedly connected to the top of temporary storage cylinder 310. Baffle 5 is movably connected to feed inlet 302.

[0020] Plastic granules are poured into the fixed cylinder 301 and enter the temporary storage cylinder 310 through the feed port 302. The motor 303 drives the rotating shaft 304 and the drive gear 305 to rotate, which in turn drives the driven gear 307 to rotate on its own axis and revolve around the drive gear 305. The revolve of the driven gear 307 around the drive gear 305 causes several sets of temporary storage cylinders 310 to rotate to the bottom of the feed port 302, causing the plastic granules to fall into the temporary storage cylinders 310. When the temporary storage cylinders 310 move to the side of the discharge port 4, the plastic granules fall into the feeding hopper 2 through the discharge port 4 and are then extruded by the extruder body 1. This achieves a quantitative distribution of the amount of plastic granules fed. The temporary storage cylinders 310 receive and discharge materials sequentially according to the rhythm, avoiding a large number of granules rushing in at once, which would cause material pressure fluctuations or jamming. The plastic granules enter the extruder in batches rather than continuously, which is beneficial for the pressure control of the screw front end, prevents feeding impact, and improves the stability of extrusion molding.

[0021] The driven gear 307 rotates, driving the turntable 308 and the stirring arc plate 309 to rotate. The stirring arc plate 309 stirs the plastic granules inside the temporary storage cylinder 310. The rotation of the stirring arc plate 309 can break up the adhesion or blockage between the granules, preventing the plastic granules from bridging or piling up in the temporary storage cylinder 310 and failing to discharge. The stirring action makes the granules continuously roll and flow in the temporary storage cylinder 310, avoiding the material from concentrating to one side or local deposition, preventing the temporary storage cylinder 310 from having poor discharge or blockage, ensuring that the granules output in each round are more uniform and stable, which is conducive to the consistency of the extruded finished product.

[0022] In addition, the top end face of the turntable 308 is provided with a slot 6, which is inserted into the occupant block 7. This allows the effective volume of the temporary storage cylinder 310 to be changed, adapting to materials of different densities, flowability or particle sizes. This enables precise control of the feeding amount in each round, making it suitable for different working conditions or product specifications. It achieves modular quantitative adjustment and improves the flexibility of the feeding system.

[0023] In this invention, during use, plastic granules are poured into the fixed cylinder 301, and the granules enter the temporary storage cylinder 310 through the feed inlet 302. The motor 303 drives the rotating shaft 304 and the driving gear 305 to rotate, further driving the driven gear 307 to rotate on its own axis and revolve around the driving gear 305. The revolution of the driven gear 307 around the driving gear 305 causes several sets of temporary storage cylinders 310 to rotate to below the feed inlet 302, causing the plastic granules to fall into the temporary storage cylinders 310, thus achieving quantitative control of the amount of plastic granules fed. To prevent a large influx of particles from causing pressure fluctuations or jamming, the driven gear 307 rotates, driving the turntable 308 and the stirring arc plate 309 to rotate. The stirring arc plate 309 stirs the plastic particles inside the temporary storage cylinder 310. The rotation of the stirring arc plate 309 can break up the adhesion or jamming between particles, preventing plastic particles from bridging or piling up in the temporary storage cylinder 310 and preventing them from not discharging. The stirring action makes the particles roll and flow continuously in the temporary storage cylinder 310, preventing the material from concentrating to one side or local deposition, and preventing the temporary storage cylinder 310 from having poor discharge or blockage.

[0024] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A plastic extruder with auxiliary feeding function, comprising an extruder body (1), wherein a feeding hopper (2) is provided on the top end face of the extruder body (1), characterized in that: An auxiliary feeding assembly (3) is provided on the top end face of the extruder body (1), and the auxiliary feeding assembly (3) includes: A fixed cylinder (301) is provided with a feed inlet (302) inside the fixed cylinder (301), and teeth (306) are fixedly connected to the bottom surface of the inner side of the fixed cylinder (301). A motor (303) is provided, the output end of which is fixedly connected to a rotating shaft (304), and a drive gear (305) is fixedly connected to the side wall of the rotating shaft (304). Driven gear (307), the top end face of the driven gear (307) is fixedly connected to a rotating rod, the top end of the rotating rod is fixedly connected to a turntable (308), the top end face of the turntable (308) is fixedly connected to a stirring arc plate (309), and the rotating rod is sleeved with a temporary storage cylinder (310).

2. A plastic extruder with auxiliary feeding function according to claim 1, characterized in that: The top end face of the extruder body (1) is fixedly connected to a bracket (8), the bracket (8) is fixedly connected to a fixed cylinder (301), and the side wall of the extruder body (1) is provided with a discharge port (4).

3. A plastic extruder with auxiliary feeding function according to claim 1, characterized in that: The motor (303) is fixedly connected to the top end face of the extruder body (1), and the rotating shaft (304) is rotatably connected to the inner bottom surface of the fixed cylinder (301).

4. A plastic extruder with auxiliary feeding function according to claim 1, characterized in that: The driven gear (307) meshes with the driving gear (305), and the driven gear (307) meshes with the teeth (306).

5. A plastic extruder with auxiliary feeding function according to claim 1, characterized in that: The turntable (308) is rotatably connected to the inner bottom surface of the temporary storage cylinder (310), and the top end face of the turntable (308) is flush with the inner bottom surface of the temporary storage cylinder (310).

6. A plastic extruder with auxiliary feeding function according to claim 1, characterized in that: The top of the temporary storage cylinder (310) is fixedly connected to a shield (5), and the shield (5) is movably connected to the feed inlet (302).

7. A plastic extruder with auxiliary feeding function according to claim 1, characterized in that: The top end face of the turntable (308) is provided with a slot (6), which is inserted into the placeholder block (7).

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