Weighing and feeding device for raw material feeding of extruder

Abstract

The utility model discloses a weighing and feeding device for raw material feeding of an extruder, which comprises a material storage structure, a material pushing and feeding structure, a driving structure, a weighing structure, a material feeding structure and a distribution box, and the material pushing and feeding structure is positioned at the bottom end of the material storage structure and is connected with the material storage structure; the feeding structure is installed on one side of the pushing and feeding structure, the driving structure is installed on the other side of the pushing and feeding structure, the pushing and feeding structure comprises a feeding and pushing pipe, a double-helix pushing mechanism and a first stirring mechanism, the double-helix pushing mechanism is installed in the feeding and pushing pipe, the driving structure comprises a transmission mechanism and a power mechanism, and the transmission mechanism is connected with the driving structure. One end of the transmission mechanism is connected with the power mechanism and the first stirring mechanism, and the other end of the transmission mechanism is connected with the double-helix pushing mechanism. The weighing and feeding device is provided with the double-spiral material pushing mechanism, the discharge amount of raw materials is increased, a plurality of power driving structures do not need to be arranged, the overall weight of the weighing and feeding device is reduced, and uniform, accurate and continuous feeding is achieved.

Description

Technical Field

[0001] This utility model relates to the field of weighing and feeding technology, specifically to a weighing and feeding device for feeding raw materials into an extruder. Background Technology

[0002] Plastic parts are usually made into various shapes by extruders using raw materials such as plastic granules through heating, injection molding, plasticizing and molding processes. During the feeding process of the extruder, the raw materials are usually added into the extruder by a feeder, and then the extruder heats and plasticizes the raw materials and shapes them through a die.

[0003] The existing feeder mainly consists of a hopper, a cylinder, a weighing scale, a single screw, a pushing drive structure, a stirring structure, and a stirring drive structure. The bottom of the hopper has a discharge port, and the hopper is used to store raw materials. The raw materials are fed into the cylinder through the discharge port of the hopper. The single screw is located inside the cylinder, and the pushing drive structure is connected to the single screw. The stirring shaft is located inside the hopper, and the stirring drive structure is connected to the stirring structure. The stirring drive structure drives the stirring structure to stir the raw materials in the cylinder. The pushing drive structure drives the single screw inside the cylinder to discharge the material outward. At the same time, the weighing scale located at the bottom of the hopper measures the weight of the material fed into the hopper.

[0004] Existing feeders have the following shortcomings in the feeding process:

[0005] 1) Extruders typically require a continuous supply of raw materials, using a single screw inside the barrel for feeding and discharge. The relatively small amount of raw material conveyed affects the feeding continuity of the feeder, which can easily impact the raw material supply requirements of the extruder, thereby affecting the processing efficiency of the extruder.

[0006] 2) The mixing structure inside the barrel and the single screw require multiple power sources to drive it. Setting up multiple power sources not only increases the weight of the feeder, but also requires the selection of a weighing scale with a larger capacity. Utility Model Content

[0007] The technical problem to be solved by this utility model is to address the shortcomings of the existing technology by providing a weighing and feeding device with a double helix feeding mechanism, which greatly improves the discharge efficiency and discharge volume of raw materials, requires only one set of drive structure to drive the first stirring mechanism, the double helix feeding mechanism stirs and pushes the raw materials, eliminates the need for multiple power drive structures, effectively reduces the overall weight of the weighing and feeding device, reduces the vibration of the weighing and feeding device during operation, and the first stirring mechanism makes it easier to push the raw materials into the feeding structure.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0009] A weighing and feeding device for feeding raw materials into an extruder includes a storage structure, a pushing and feeding structure, a driving structure, a weighing structure, a feeding structure, and an electrical control box. The pushing and feeding structure is located at the bottom of the storage structure and is connected to it. The feeding structure is installed on one side of the pushing and feeding structure, and the driving structure is installed on the other side of the pushing and feeding structure. The storage structure, the pushing and feeding structure, and the driving structure are all installed above the weighing structure.

[0010] The feeding structure includes a feeding pusher pipe, a double-helix pushing mechanism, and a first stirring mechanism. The first stirring mechanism is located above the feeding pusher pipe and passes through the inside of the storage structure. The double-helix pushing mechanism is installed inside the feeding pusher pipe. The top of the feeding pusher pipe is provided with a feed inlet, which is connected to the bottom of the storage structure. A first discharge port is provided on one side of the feeding pusher pipe, which is connected to the feeding structure.

[0011] The drive structure includes a transmission mechanism and a power mechanism. One end of the transmission mechanism is connected to the power mechanism and the first stirring mechanism, and the other end of the transmission mechanism is connected to the double helix pushing mechanism.

[0012] The distribution box is electrically connected to the power mechanism and the weighing structure.

[0013] Furthermore, the double-helix feeding mechanism includes a first helical feeding shaft and a second helical feeding shaft, which are installed alternately inside the feeding tube. A plurality of first helical blades are installed on the outer periphery of the first helical feeding shaft, and a plurality of second helical blades are installed on the outer periphery of the second helical feeding shaft.

[0014] Furthermore, the storage structure includes a storage cylinder and a feeding ball hopper. The feeding ball hopper is located at the bottom end of the storage cylinder and is fixedly connected to the storage cylinder to form an integral structure. A first reinforcing rib is formed on the bottom edge of the storage cylinder, and a second reinforcing rib is formed on the top end of the feeding ball hopper. The first and second reinforcing ribs are both located at the fixed points of the storage cylinder and the feeding ball hopper. A second discharge port is opened at the bottom end of the feeding ball hopper, and the second discharge port of the feeding ball hopper is connected to the inlet of the feeding pusher pipe. The first stirring mechanism passes through the inside of the feeding ball hopper of the storage structure and is located above the feeding pusher pipe.

[0015] Furthermore, the first stirring mechanism includes a first stirring shaft and at least two first stirring blades. The two first stirring blades are symmetrically fixed along the outer periphery of the first stirring shaft, and the outer edge of each first stirring blade has an arc-shaped bent edge that matches the inner surface of the feeding hopper.

[0016] Furthermore, the transmission mechanism includes a gearbox, a first pusher drive shaft, a second pusher drive shaft, a transmission output shaft, and a bridge shaft. The first and second pusher drive shafts are alternately arranged within the gearbox. The bridge shaft passes through the gearbox and is located above the first and second pusher drive shafts. The transmission output shaft is located between the bridge shaft and the first and second pusher drive shafts. One end of the first and second pusher drive shafts respectively passes through the gearbox and the first and second helical pusher shafts of the double helical pusher mechanism. The bridge shaft is connected to the first stirring shaft of the first stirring mechanism through the gearbox at one end, and the transmission output shaft is connected to the power mechanism at one end. A first transmission gear is fitted on the transmission output shaft, a first pushing transmission gear is fitted on the first pushing transmission shaft, a second pushing transmission gear is fitted on the second pushing transmission shaft, and a second transmission gear is fitted on the bridge shaft. The first transmission gear on the transmission output shaft meshes with the first pushing transmission gear on the first pushing transmission shaft, the second pushing transmission gear on the second pushing transmission shaft, and the second transmission gear on the bridge shaft, respectively.

[0017] Furthermore, the power mechanism includes a power motor and a reducer, the input shaft of the reducer is connected to the output shaft of the power motor, and the output shaft of the reducer is connected to the transmission output shaft of the transmission mechanism.

[0018] Furthermore, the weighing structure includes a weighing sensor and a support frame. The support frame is installed on the upper end of the weighing sensor. The material storage structure, the material pushing and feeding structure, and the driving structure are all installed on the upper end face of the support frame. The weighing sensor is electrically connected to the power distribution box.

[0019] Furthermore, the feeding structure includes a feeding conveying pipe, a feeding port, and a connecting hole. The connecting hole is located on the side wall of the feeding conveying pipe, and the feeding conveying pipe is connected to the feeding pusher pipe through the connecting hole. The feeding port is located at the bottom end of the feeding conveying pipe, and one end of the feeding port is fixed to the feeding conveying pipe as an integral structure. The other end of the feeding port is used to connect to the feed end of the extruder.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The weighing and feeding device of this utility model includes a storage structure, a pushing and feeding structure, a driving structure, a weighing structure, a feeding structure, and a power distribution box. The pushing and feeding structure is located at the bottom of the storage structure and is connected to the storage structure. The feeding structure is installed on one side of the pushing and feeding structure, and the driving structure is installed on the other side of the pushing and feeding structure. The pushing and feeding structure includes a feeding and pushing pipe, a double-helix pushing mechanism, and a first stirring mechanism. The first stirring mechanism is located above the feeding and pushing pipe and passes through the inside of the storage structure. The double-helix pushing mechanism is installed inside the feeding and pushing pipe. The driving structure includes a transmission mechanism and a power mechanism. One end of the transmission mechanism is connected to the power mechanism and the first stirring mechanism, and the other end of the transmission mechanism is connected to the double-helix pushing mechanism. This utility model is equipped with a double helix feeding mechanism, which greatly improves the discharge efficiency and discharge volume of raw materials. Only one set of drive structure is needed to drive the first stirring mechanism and the double helix feeding mechanism to stir and feed the raw materials. There is no need to set up multiple power drive structures, which effectively reduces the overall weight of the weighing and feeding device, reduces the vibration of the weighing and feeding device during operation, and reduces equipment cost investment. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the weighing and feeding device of this utility model;

[0023] Figure 2 This is a schematic diagram of the overall structure of the weighing and feeding device of this utility model from another angle;

[0024] Figure 3 This is an exploded view of the material storage structure in the weighing and feeding device of this utility model;

[0025] Figure 4 This is an exploded view of the material storage structure in the weighing and feeding device of this utility model from another angle;

[0026] Figure 5 This is a schematic diagram showing the relationship between the material pushing and feeding structure, the driving structure, the weighing structure, and the feeding structure of this utility model.

[0027] Figure 6 This is a cross-sectional view of the internal structure of the material feeding structure, drive structure, weighing structure, and feeding structure of this utility model.

[0028] Figure 7 This is an exploded view of the material feeding structure, driving structure, and weighing structure of this utility model;

[0029] Figure 8 This is an exploded view of the material feeding structure, driving structure, and weighing structure of this utility model from another angle.

[0030] Figure 9 This is an exploded view of the distribution box of this utility model.

[0031] In the diagram, the components are: storage structure 1, storage cylinder 11, feeding hopper 12, first reinforcing rib 13, second reinforcing rib 14, feed inlet 15, stirring motor 16, stirring reducer 17, feeding structure 2, feeding and pushing pipe 21, first discharge port 211, double spiral pushing mechanism 22, first spiral pushing shaft 221, second spiral pushing shaft 222, first stirring mechanism 23, first stirring shaft 231, first stirring blade 232, arc-shaped bent edge 233, drive structure 3, transmission mechanism 31, and gearbox 311. First pusher drive shaft 312, second pusher drive shaft 313, transmission output shaft 314, bridge shaft 315, first transmission gear 316, first pusher drive gear 317, second pusher drive gear 318, second transmission gear 319, power mechanism 32, power motor 321, reducer 322, weighing structure 4, weighing sensor 41, support frame 42, feeding structure 5, feeding conveying pipe 51, feeding port 52, power distribution box 6, housing 61, PLC controller 62, human-machine interface 63. Detailed Implementation

[0032] 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.

[0033] like Figures 1-9As shown, this utility model provides a weighing and feeding device for feeding raw materials into an extruder. The weighing and feeding device includes a storage structure 1, a pushing and feeding structure 2, a driving structure 3, a weighing structure 4, a feeding structure 5, and an electrical control box 6. The pushing and feeding structure 2 is located at the bottom of the storage structure 1 and connected to it. The feeding structure 5 is installed on one side of the pushing and feeding structure 2, and the driving structure 3 is installed on the other side of the pushing and feeding structure 2. The storage structure 1, the pushing and feeding structure 2, and the driving structure 3 are all installed on the weighing structure 4. Above the heavy structure 4, the feeding structure 2 includes a feeding pusher pipe 21, a double-helix pushing mechanism 22, and a first stirring mechanism 23. The first stirring mechanism 23 is located above the feeding pusher pipe 21 and passes through the inside of the storage structure 1. The double-helix pushing mechanism 22 is installed inside the feeding pusher pipe 21. The top of the feeding pusher pipe 21 is provided with a feed inlet, which is connected to the bottom of the storage structure 1. A first discharge port 211 is provided on one side of the feeding pusher pipe 21. The discharge port 211 is connected to the feeding structure 5. The drive structure 3 includes a transmission mechanism 31 and a power mechanism 32. One end of the transmission mechanism 31 is connected to the power mechanism 32 and the first stirring mechanism 23, and the other end of the transmission mechanism 31 is connected to the double spiral pushing mechanism 22. The power distribution box 6 is electrically connected to the power mechanism 32 and the weighing structure 4. Specifically, the weighing structure 4 includes a weighing sensor 41 and a support frame 42. The support frame 42 is installed on the upper end of the weighing sensor 41. The storage structure 1 and the pushing and feeding structure are also included. 2. The drive structure 3 is installed on the upper surface of the support frame 42. The weighing sensor 41 is electrically connected to the power distribution box 6. The feeding structure 5 includes a feeding conveying pipe 51, a feeding port 52, and a connecting hole. The connecting hole is set on the side wall of the feeding conveying pipe 51. The feeding conveying pipe 51 is connected to the feeding push pipe 21 through the connecting hole. The feeding port 52 is set at the bottom end of the feeding conveying pipe 51. One end of the feeding port 52 is fixed to the feeding conveying pipe 51 as an integral structure. The other end of the feeding port 52 is used to connect to the feed end of the extruder.

[0034] This invention delivers the raw material from the storage structure 1 to the inlet of the feeding and pushing pipe 21. After being pushed by the double-helix pushing mechanism 22, it is discharged from the first outlet 211 of the feeding and pushing pipe 21. The raw material discharged from the first outlet 211 falls into the feeding structure 5. The double-helix pushing mechanism 22 of this invention greatly improves the discharge efficiency and volume of the raw material, ensuring a continuous supply of raw material to the extruder and significantly improving the conveying efficiency of the raw material. This invention only requires the drive structure 3 to drive the first stirring mechanism 23. The double-helix feeding mechanism 22 mixes and feeds the raw materials, eliminating the need for multiple transmission mechanisms 31. This effectively reduces the overall weight of the weighing and feeding device, weakens vibrations during operation, avoids affecting the weighing accuracy of the weighing structure 4, and reduces equipment cost. The weighing structure 4 detects the weight data of the raw materials in the storage structure 1 in real time and sends it to the distribution box 6. The first mixing mechanism 23 prevents the raw materials in the storage structure 1 from bridging, making it easier for the raw materials in the storage structure 1 to fall into the feeding and pushing pipe 21.

[0035] like Figure 9 As shown, the power distribution box 6 of this utility model includes a box body 61, a PLC controller 62, and a human-machine interface 63. The PLC controller 62 is built into the box body 61, and the human-machine interface 63 is installed at the front end of the box body 61. The PLC controller 62 is a Siemens S7-200 SMART PLC. The input terminal of the PLC controller 62 is electrically connected to the weighing sensor 41, and the output terminal of the PLC controller 62 is electrically connected to the power motor 321.

[0036] In its specific implementation, the double-helix feeding mechanism 22 of this utility model includes a first helical feeding shaft 221 and a second helical feeding shaft 222. The first helical feeding shaft 221 and the second helical feeding shaft 222 are installed alternately inside the feeding and feeding tube 21. A plurality of first helical blades are installed on the outer periphery of the first helical feeding shaft 221, and a plurality of second helical blades are installed on the outer periphery of the second helical feeding shaft 222. When the first helical feeding shaft 221 and the second helical feeding shaft 222 rotate, the plurality of first helical blades contact the raw material and push it along the direction of the first helical feeding shaft 221. Several second spiral blades contact the raw material and push it along the direction of the second spiral pusher shaft 222. The raw material gradually moves forward under the push of the first spiral blade and the second spiral blade and is finally discharged from the first discharge port 211 of the feeding pusher pipe 21 to the feeding structure 5. The double spiral pusher mechanism 22 of this utility model can adopt a structure in which multiple spiral pusher shafts are arranged alternately to increase the area of ​​the discharge port, so that the discharge and conveying capacity of the raw material is increased. At the same time, it can also make the raw material in the hopper less prone to arching, the discharge and conveying is smoother, and the conveying efficiency and weighing accuracy of the raw material are improved.

[0037] In other embodiments, in order to increase the amount of raw material conveyed, the double helix pusher mechanism 22 can also be changed to a triple helix pusher mechanism or a quadruple helix pusher mechanism.

[0038] like Figures 3-4 As shown, the storage structure 1 of this utility model includes a storage cylinder 11 and a feeding hopper 12. The feeding hopper 12 is disposed at the bottom end of the storage cylinder 11 and is fixedly connected to the storage cylinder 11 to form an integral structure. A first reinforcing rib 13 is formed on the bottom edge of the storage cylinder 11, and a second reinforcing rib 14 is formed on the top end of the feeding hopper 12. The first reinforcing rib 13 and the second reinforcing rib 14 are both disposed at the fixed points of the storage cylinder 11 and the feeding hopper 12. A second discharge point is provided at the bottom end of the feeding hopper 12. The second discharge port of the feeding ball hopper 12 is connected to the inlet of the feeding pusher pipe 21. The first stirring mechanism 23 is installed inside the feeding ball hopper 12 of the storage structure 1 and located above the feeding pusher pipe 21. By setting the first reinforcing rib 13 and the second reinforcing rib 14 at the fixing point of the storage cylinder 11 and the feeding ball hopper 12, the connection stability of the storage cylinder 11 and the feeding ball hopper 12 can be improved, the overall structural strength of the storage structure 1 can be improved, and the storage structure 1 is not easy to deform.

[0039] like Figure 5-Figure 8As shown in this embodiment of the invention, the first stirring mechanism 23 includes a first stirring shaft 231 and at least two first stirring blades 232. The two first stirring blades 232 are symmetrically fixed along the outer periphery of the first stirring shaft 231. The outer edge of each first stirring blade 232 has an arc-shaped bent edge 233 that matches the inner surface of the feeding hopper 12. The arc-shaped bent edge 233 on the outer edge of each stirring blade makes the shape of the stirring blade more closely fit the inner surface of the feeding hopper 12 when it rotates. This not only prevents the raw material at the bottom of the storage structure 1 from "arching," but also promotes the flow of raw material in the feeding hopper 12 to the feeding pusher pipe 21. In specific implementation, this utility model has a feed inlet 15 at the top of the storage cylinder 11. The raw material flows into the storage cylinder 11 through the feed inlet 15. A second stirring mechanism is installed inside the storage cylinder 11. A stirring motor 16 and a stirring reducer 17 are installed at the top of the storage cylinder 11. The output shaft of the stirring motor 16 is connected to the input shaft of the stirring reducer 17. The output shaft of the stirring reducer 17 is connected to the second stirring mechanism to drive the second stirring mechanism to rotate. The second stirring mechanism includes a second stirring shaft and several stirring blades. The several stirring blades move along the first stirring shaft. The outer periphery of the two stirring shafts is symmetrically fixed. The second stirring shaft is fixed inside the storage cylinder 11. The output shaft of the stirring reducer 17 is set downward along the storage cylinder 11. The output shaft of the stirring reducer 17 is connected to the second stirring shaft. The stirring motor 16 and the stirring reducer 17 are set to provide power for the stirring and feeding of the second stirring shaft, so that the second stirring shaft drives the stirring blades to stir the raw materials inside the storage cylinder 11. If the raw materials in the upper part of the storage structure 1 arch due to high humidity, the second stirring shaft will stir them to prevent the raw materials in the storage cylinder 11 from arching.

[0040] The present invention provides a first stirring mechanism 23 and a second stirring mechanism at the upper and lower parts of the storage structure 1. On the one hand, it can prevent the raw materials in the storage cylinder 11 and the feeding ball hopper 12 from arching. On the other hand, it makes it easier for the raw materials in the storage cylinder 11 and the feeding ball hopper 12 to flow into the feeding push pipe 21, and makes it easier to push the raw materials to the feeding structure 5.

[0041] In a specific implementation of this utility model embodiment, the transmission mechanism 31 includes a gearbox 311, a first pusher drive shaft 312, a second pusher drive shaft 313, a transmission output shaft 314, and a bridge shaft 315. The first pusher drive shaft 312 and the second pusher drive shaft 313 are alternately arranged inside the gearbox 311. The bridge shaft 315 passes through the gearbox 311 and is located above the first pusher drive shaft 312 and the second pusher drive shaft 313. The transmission output shaft 314 is located between the bridge shaft 315 and the first pusher drive shaft 312 and the second pusher drive shaft 313. One end of the first pusher drive shaft 312 and the second pusher drive shaft 313 respectively passes through the gearbox 311 and the first spiral pusher shaft 221 and the second spiral pusher shaft 222 of the double spiral pusher mechanism 22. The two spiral pusher shafts 222 are connected. One end of the bridge shaft 315 passes through the gearbox 311 and is connected to the first stirring shaft 231 of the first stirring mechanism 23. One end of the transmission output shaft 314 is connected to the power mechanism 32. The transmission output shaft 314 is fitted with a first transmission gear 316. The first pusher transmission shaft 312 is fitted with a first pusher transmission gear 317. The second pusher transmission shaft 313 is fitted with a second pusher transmission gear 318. The bridge shaft 315 is fitted with a second transmission gear 319. The first transmission gear 316 on the transmission output shaft 314 meshes with the first pusher transmission gear 317 on the first pusher transmission shaft 312, the second pusher transmission gear 318 on the second pusher transmission shaft 313, and the second transmission gear 319 on the bridge shaft 315. The power mechanism 32 drives the transmission output shaft 314 and the first transmission gear 316 on the transmission output shaft 314 to rotate. During the rotation of the first transmission gear 316, it simultaneously drives the second transmission gear 319 on the bridge shaft 315, the first pushing transmission gear 317 on the first pushing transmission shaft 312, and the second pushing transmission gear 318 on the second pushing transmission shaft 313 to rotate. This drives the bridge shaft 315 and its first stirring shaft 231, the first pushing transmission shaft 312 and its first spiral pushing shaft 221 connected to one end, and the second pushing transmission shaft 313 and its second spiral pushing shaft 222 connected to one end to move, thereby realizing the stirring and conveying of raw materials. The power mechanism 32 includes a power motor 321 and a reducer 322. The input shaft of the reducer 322 is connected to the output shaft of the power motor 321, and the output shaft of the reducer 322 is connected to the transmission output shaft 314 of the transmission mechanism 31.The first pusher shaft 312, the second pusher shaft 313, and the bridge shaft 315 inside the gearbox 311 are driven by the power motor 321 and the reducer 322 to rotate, thereby driving the first spiral pusher shaft 221, the second spiral pusher shaft 222, and the first stirring shaft 231 to move. The first stirring shaft 231 continuously stirs the raw material in the feeding hopper 12, preventing the raw material from bridging in the feeding hopper 12. The double spiral pusher mechanism 22 of the first spiral pusher shaft 221 and the second spiral pusher shaft 222 achieves the effect of mutual cleaning and non-adhesion of raw material between the two spiral pusher shafts. In conjunction with the first stirring mechanism 23, they continuously stir at the same time, making the raw material conveyed from the feeder faster. This ensures the high efficiency of the weighing feeder, ensures the continuous supply of raw material to the extruder, and greatly improves the conveying efficiency of raw material.

[0042] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of this application should still fall within the scope of the present invention.

Claims

1. A weighing and feeding device for feeding raw materials into an extruder, characterized in that: The weighing and feeding device includes a storage structure, a pushing and feeding structure, a driving structure, a weighing structure, a feeding structure, and a power distribution box. The pushing and feeding structure is located at the bottom of the storage structure and is connected to the storage structure. The feeding structure is installed on one side of the pushing and feeding structure, and the driving structure is installed on the other side of the pushing and feeding structure. The storage structure, the pushing and feeding structure, and the driving structure are all installed above the weighing structure. The feeding structure includes a feeding pusher pipe, a double-helix pushing mechanism, and a first stirring mechanism. The first stirring mechanism is located above the feeding pusher pipe and passes through the inside of the storage structure. The double-helix pushing mechanism is installed inside the feeding pusher pipe. The top of the feeding pusher pipe is provided with a feed inlet, which is connected to the bottom of the storage structure. A first discharge port is provided on one side of the feeding pusher pipe, which is connected to the feeding structure. The drive structure includes a transmission mechanism and a power mechanism. One end of the transmission mechanism is connected to the power mechanism and the first stirring mechanism, and the other end of the transmission mechanism is connected to the double helix pushing mechanism. The distribution box is electrically connected to the power mechanism and the weighing structure.

2. The weighing and feeding device for extruder raw material feeding according to claim 1, characterized in that: The double-helix feeding mechanism includes a first helical feeding shaft and a second helical feeding shaft. The first helical feeding shaft and the second helical feeding shaft are installed alternately inside the feeding tube. A plurality of first helical blades are installed on the outer periphery of the first helical feeding shaft, and a plurality of second helical blades are installed on the outer periphery of the second helical feeding shaft.

3. The weighing and feeding device for extruder raw material feeding according to claim 1, characterized in that: The storage structure includes a storage cylinder and a feeding ball hopper. The feeding ball hopper is located at the bottom of the storage cylinder and is fixedly connected to the storage cylinder to form an integral structure. A first reinforcing rib is formed at the bottom edge of the storage cylinder, and a second reinforcing rib is formed at the top of the feeding ball hopper. The first and second reinforcing ribs are both located at the fixed points of the storage cylinder and the feeding ball hopper. A second discharge port is opened at the bottom of the feeding ball hopper, and the second discharge port of the feeding ball hopper is connected to the inlet of the feeding pusher pipe. The first stirring mechanism is installed inside the feeding ball hopper of the storage structure and is located above the feeding pusher pipe.

4. The weighing and feeding device for extruder raw material feeding according to claim 3, characterized in that: The first stirring mechanism includes a first stirring shaft and at least two first stirring blades. The two first stirring blades are symmetrically fixed along the outer periphery of the first stirring shaft, and the outer edge of each first stirring blade has an arc-shaped bent edge that matches the inner surface of the feeding hopper.

5. The weighing and feeding device for extruder raw material feeding according to claim 1, characterized in that: The transmission mechanism includes a gearbox, a first pusher drive shaft, a second pusher drive shaft, a transmission output shaft, and a bridge shaft. The first and second pusher drive shafts are alternately installed inside the gearbox. The bridge shaft is installed inside the gearbox and located above the first and second pusher drive shafts. The transmission output shaft is located between the bridge shaft and the first and second pusher drive shafts. One end of each of the first and second pusher drive shafts passes through the gearbox and is connected to the first and second helical pusher shafts of the double helical pusher mechanism, respectively. One end of the bridge shaft passes through the gearbox and is connected to the first stirring shaft of the first stirring mechanism. One end of the transmission output shaft is connected to the power mechanism. A first transmission gear is fitted on the transmission output shaft. A first pushing transmission gear is fitted on the first pushing transmission shaft. A second pushing transmission gear is fitted on the second pushing transmission shaft. A second transmission gear is fitted on the bridge shaft. The first transmission gear on the transmission output shaft meshes with the first pushing transmission gear on the first pushing transmission shaft, the second pushing transmission gear on the second pushing transmission shaft, and the second transmission gear on the bridge shaft, respectively.

6. The weighing and feeding device for extruder raw material feeding according to claim 1, characterized in that: The power mechanism includes a power motor and a speed reducer. The input shaft of the speed reducer is connected to the output shaft of the power motor, and the output shaft of the speed reducer is connected to the transmission output shaft of the transmission mechanism.

7. The weighing and feeding device for extruder raw material feeding according to claim 1, characterized in that: The weighing structure includes a weighing sensor and a support frame. The support frame is installed on the upper end of the weighing sensor. The material storage structure, the material pushing and feeding structure, and the driving structure are all installed on the upper surface of the support frame. The weighing sensor is electrically connected to the power distribution box.

8. The weighing and feeding device for extruder raw material feeding according to claim 1, characterized in that: The feeding structure includes a feeding conveying pipe, a feeding port, and a connecting hole. The connecting hole is located on the side wall of the feeding conveying pipe, and the feeding conveying pipe is connected to the feeding pusher pipe through the connecting hole. The feeding port is located at the bottom end of the feeding conveying pipe, and one end of the feeding port is fixed to the feeding conveying pipe as an integral structure. The other end of the feeding port is used to connect to the feed end of the extruder.

Images