CN219855887U

CN219855887U - Rotary feeding device

Info

Publication number: CN219855887U
Application number: CN202320591918.2U
Authority: CN
Inventors: 范宗元
Original assignee: Nanjing Meiya Rubber & Plastic Machinery Manufacturing Co ltd
Current assignee: Nanjing Meiya Rubber & Plastic Machinery Manufacturing Co ltd
Priority date: 2023-03-23
Filing date: 2023-03-23
Publication date: 2023-10-20
Anticipated expiration: 2033-03-23

Abstract

The utility model provides a rotary feeding device, which solves the problems that a material at a feeding port of a conventional screw extruder is easy to block, a feeding pipe is difficult to disassemble and maintain, and the like, and the main scheme comprises the following steps: the feeding mechanism comprises a supporting platform, a rotating part, a hopper, a charging barrel and a driving part, wherein the rotating part is fixed on the screw extruder and is used for driving the supporting platform to deviate from the center of the section of the charging barrel, the hopper is divided into a material containing section and a material discharging section which are mutually communicated from top to bottom, the inner wall of the material containing section is rotationally connected with a stirring blade, a push rod is movably connected in the material discharging section, one end of the charging barrel is communicated with the material containing section, the other end of the charging barrel corresponds to the top of the charging barrel, and the driving part is used for driving the stirring blade to rotate and the push rod to reciprocate along the axial direction of the charging barrel.

Description

Rotary feeding device

Technical Field

The utility model relates to the technical field of feeding of screw extruders, in particular to a rotary feeding device.

Background

Screw extruders are commonly used to extrude rubber half-products and articles. The main principle is that after plastic enters the screw from the hopper, the plastic is conveyed forward under the action of the rotating screw through the friction action of the inner wall of the charging barrel and the surface of the screw, loose solid particles (or material powder) are filled in the screw grooves at the charging section of the screw, and the material starts to be compacted along with the continuous conveying of the material. After the material enters the compression section, the plastic gradually forms high pressure due to the gradual reduction of the screw groove depth and the resistance of the machine head, and is further compacted. At the same time, under the action of the external heating of the charging barrel and the internal heat generated by the strong stirring of the screw and the inner surface of the charging barrel, the temperature of the plastic is continuously increased, and the plastic reaches the melting point at a certain point contacted with the charging barrel, namely the curing section, and begins to melt.

At present, most screw extrusion feeding modes generally adopt a mode of an upper hopper, the bottom of the hopper is communicated with a feed inlet material pipe, and the feeding modes have the following limitations:

1. the single feeding mode of the hopper improves the feeding quantity, but the communication part between the bottom of the hopper and the feeding port is easy to cause the phenomena of material retention, blockage and the like, and the uneven feeding of the materials is not beneficial to the technological improvement of the subsequent material melt molding;

2. because the material is plastics, in order to avoid the splash of material in feed inlet department, the feed hopper is generally nearer with the feed pipe, and when the feed pipe needs to dismantle in order to clear up the maintenance, it is comparatively inconvenient.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art, and provides a rotary feeding device capable of avoiding material blockage and facilitating material pipe disassembly.

In order to solve the technical problems, the utility model adopts the following technical scheme: a rotary feed device comprising: the feeding mechanism comprises a supporting platform, a rotating part, a hopper, a charging barrel and a driving part, wherein the rotating part is fixed on the screw extruder and is used for driving the supporting platform to deviate from the center of the section of the charging barrel, the hopper is divided into a material containing section and a material discharging section which are mutually communicated from top to bottom, the inner wall of the material containing section is rotationally connected with a stirring blade, a push rod is movably connected in the material discharging section, one end of the charging barrel is communicated with the material containing section, the other end of the charging barrel corresponds to the top of the charging barrel, and the driving part is used for driving the stirring blade to rotate and the push rod to reciprocate along the axial direction of the charging barrel.

Further, the rotating piece comprises a first motor and a rotary bearing seat of MY series, the supporting platform is fixedly connected with the rotary bearing seat, and the first motor drives the supporting platform to rotate through the rotary bearing seat.

Further, the driving piece includes second motor and driving box, still include initiative tooth, drive tooth, eccentric wheel, transfer line and slide rail in the driving box, the drive tooth includes two and distributes in initiative tooth both sides, and it is used for stirring leaf rotation and eccentric wheel rotation respectively, the master gear with two the cooperation of drive tooth meshing, the second motor output with initiative tooth coaxial fastening, transfer line one end with the eccentric wheel articulates, the other end through the roller with the slider is connected, slider and slide rail sliding connection and slider are close to hopper one end with the push rod is connected fixedly.

Further, the push rod comprises a rod body and a block, the driving box is communicated with the discharge section of the hopper through an outer pipe fixed by bolts, the rod body is positioned in the outer pipe, the block is positioned in the discharge section, the block is of an inclined ladder structure, and the structure of the communication part of the discharge section and the outer pipe corresponds to the block.

Further, the material pipe and the material cylinder are both positioned on the axis of the screw extruder, and when the supporting platform is deviated, the deviation angle of the axis of the material cylinder and the axis of the screw extruder is larger than 45 degrees.

Further, the barrel diameter is smaller than the tube diameter.

Compared with the prior art, the utility model has the beneficial effects that: through the stirring leaf that sets up in the hopper flourishing material section, through the relative rotation of impeller, the large granule that links together in with the material can effectively cut apart, do benefit to the material feeding smooth and easy, the detention and the jam of large granule material when feeding in the material pipe are avoided, and after the tiny particle material after the stirring leaf is cut apart is in the hopper ejection of compact section, the push rod can carry out reciprocating propelling movement to the material, realize the purpose of the even ejection of compact of feed cylinder exit, rethread rotating member and supporting platform's design can realize the dislocation of material pipe and feed cylinder, make things convenient for the dismantlement of operating personnel later stage to the material pipe.

Drawings

The disclosure of the present utility model is described with reference to the accompanying drawings. It is to be understood that the drawings are designed solely for the purposes of illustration and not as a definition of the limits of the utility model. In the drawings, like reference numerals are used to refer to like parts. Wherein:

FIG. 1 schematically shows a general structural schematic of a proposed embodiment according to the present utility model;

FIG. 2 schematically shows a schematic structure of a feeding mechanism according to an embodiment of the present utility model;

FIG. 3 schematically illustrates a rotational state of a rotary member according to an embodiment of the present utility model;

fig. 4 schematically shows a schematic view of the internal structure of a drive box according to an embodiment of the present utility model.

Reference numerals in the drawings: 1. discharging the screw machine; 2. a material pipe; 3. a feed mechanism; 31. a support platform; 32. a rotating member; 321. a first motor; 322. a swivel bearing seat; 33. a hopper; 331. a material containing section; 332. a discharging section; 34. a charging barrel; 35. a driving member; 351. a second motor; 352. a drive box; 353. a driving tooth; 354. a drive tooth; 355. an eccentric wheel; 356. a transmission rod; 357. a slide block; 358. a slide rail; 359. a roller; 36. stirring the leaves; 37. a push rod; 371. a rod body; 372. a block; 38. an outer tube.

Detailed Description

It is to be understood that, according to the technical solution of the present utility model, those skilled in the art may propose various alternative structural modes and implementation modes without changing the true spirit of the present utility model. Accordingly, the following detailed description and drawings are merely illustrative of the utility model and are not intended to be exhaustive or to limit the utility model to the precise form disclosed.

An embodiment according to the present utility model is shown in connection with fig. 1-4.

As shown in fig. 1, a rotary feeding device includes: the feeding mechanism 3 comprises a supporting platform 31, a rotating part 32, a hopper 33, a charging barrel 34 and a driving part 35, wherein the rotating part 32 is fixed on the screw extruder and is used for driving the supporting platform 31 to deviate from the center of the section of the feeding pipe 2, the hopper 33 is divided into a material containing section 331 and a material discharging section 332 which are mutually communicated from top to bottom, the inner wall of the material containing section 331 is rotationally connected with a stirring blade 36, a push rod 37 is movably connected in the material discharging section 332, one end of the charging barrel 34 is communicated with the material containing section 331, the other end of the charging barrel 34 corresponds to the top of the feeding pipe 2, and the driving part 35 is used for driving the stirring blade 36 to rotate and driving the push rod 37 to axially reciprocate with the charging barrel 34.

In general, in order to eliminate the problems that materials are retained and the feeding pipe 2 is difficult to disassemble and maintain during feeding of a conventional screw extruder, the materials are retained firstly, large particles adhered together in the materials can be effectively divided through relative rotation of impellers through stirring blades 36 arranged in a material containing section 331 of a hopper 33, smooth feeding of the materials is facilitated, retention and blockage of the large-particle materials during feeding in the feeding pipe 2 are avoided, and after the small-particle materials divided by the stirring blades 36 fall into a material discharging section 332 of the hopper 33, the pushing rod 37 can push the materials back and forth, so that the purpose of uniform discharging at an outlet of the charging barrel 34 is realized.

And for the situation that the material pipe 2 needs to be disassembled for cleaning and maintenance in the later stage, the utility model is also provided with a special rotating piece 32 and a supporting platform 31, wherein the rotating piece 32 is used for driving the supporting platform 31 to deviate from the center of the section of the material pipe 2, thereby realizing the dislocation of the material pipe 2 and the charging barrel 34 and facilitating the later stage disassembly of the material pipe 2 by operators.

For the rotating member 32 and the driving member 35 mentioned in the present utility model, in practice, the present utility model is to reduce the cost, and the first motor 321 and the rotary bearing seat 322 of the main MY series are selected for the rotating member 32, the supporting platform 31 is fixedly connected with the rotary bearing seat 322, and the first motor 321 drives the supporting platform 31 to rotate through the rotary bearing seat 322.

Further, the material tube 2 and the material tube 34 are both located on the axis of the screw extruder, and when the supporting platform 31 is offset, the deflection angle between the axis of the material tube 34 and the axis of the screw extruder is greater than 45 °, and when the material tube 34 is actually selected, the diameter of the material tube 34 is ensured to be smaller than the diameter of the material tube 2, so as to facilitate the material discharging.

And for the realization of the driving piece 35, mainly include second motor 351 and drive case 352, still include driving tooth 353 in the drive case 352, the driving tooth 354, eccentric 355, transfer line 356, slider 357 and slide rail 358, the driving tooth 354 includes two and distributes in driving tooth 353 both sides, it is used for stirring leaf 36 rotation and eccentric 355 rotation respectively, the main gear meshes with two driving teeth 354 cooperation, the coaxial fixed of driving tooth 353 of second motor 351 output, transfer line 356 one end is articulated with eccentric 355, the other end is connected with slider 357 through roller 359, slider 357 is close to hopper 33 one end and push rod 37 connection fixed with slide rail 358 sliding connection.

The second motor 351 mainly provides the required power of driving piece 35, after the second motor 351 drives the driving tooth 353 wheel to rotate, two driving teeth 354 can rotate along with the driving tooth 353, one of them driving tooth 354 mainly is used for realizing the location rotation of stirring leaf 36 in hopper 33, the eccentric wheel 355 can be driven to rotate after another driving tooth 354 is transmitted, the mode that the eccentric wheel 355 matches transfer line 356 and roller 359 can be with the rotation force of driving tooth 354, change into the reciprocal slip of slider 357 in the spout, realize the reciprocal propelling movement of push rod 37 to the material in the hopper 33 promptly, the drive structure adopts a motor to unify the transmission, the equipment total amount on the supporting platform 31 has significantly reduced, do benefit to slewing bearing seat 322 life.

Further, in order to ensure that the push rod 37 does not additionally drive more materials in the return process, for the structural design of the push rod 37, the push rod 37 comprises a rod body 371 and a block 372, the driving box 352 is communicated with the discharging section 332 of the hopper 33 through an outer pipe 38 fixed by bolts, the rod body 371 is positioned in the outer pipe 38, the block 372 is positioned in the discharging section 332, the block 372 is of an inclined ladder structure, and the structure of the communicating part of the discharging section 332 and the outer pipe 38 corresponds to the block 372.

The technical scope of the present utility model is not limited to the above description, and those skilled in the art may make various changes and modifications to the above-described embodiments without departing from the technical spirit of the present utility model, and these changes and modifications should be included in the scope of the present utility model.

Claims

1. A rotary feed device, comprising: the feeding mechanism comprises a supporting platform, a rotating part, a hopper, a charging barrel and a driving part, wherein the rotating part is fixed on the screw extruder and is used for driving the supporting platform to deviate from the center of the section of the charging barrel, the hopper is divided into a material containing section and a material discharging section which are mutually communicated from top to bottom, the inner wall of the material containing section is rotationally connected with a stirring blade, a push rod is movably connected in the material discharging section, one end of the charging barrel is communicated with the material containing section, the other end of the charging barrel corresponds to the top of the charging barrel, and the driving part is used for driving the stirring blade to rotate and the push rod to reciprocate along the axial direction of the charging barrel.

2. A rotary feeder according to claim 1, characterized in that: the rotating piece comprises a first motor of MY series and a rotary bearing seat, the supporting platform is fixedly connected with the rotary bearing seat, and the first motor drives the supporting platform to rotate through the rotary bearing seat.

3. A rotary feeder according to claim 1, characterized in that: the driving piece comprises a second motor and a driving box, wherein driving teeth, transmission teeth, eccentric wheels, a transmission rod, a sliding block and a sliding rail are further arranged in the driving box, the transmission teeth comprise two driving teeth and are distributed on two sides of the driving teeth and are respectively used for stirring blade rotation and eccentric wheel rotation, the driving teeth are meshed with the two driving teeth to be matched, the output end of the second motor is coaxially fixed with the driving teeth, one end of the transmission rod is hinged to the eccentric wheels, the other end of the transmission rod is connected with the sliding block through a roller, and the sliding block is connected with the sliding rail in a sliding mode and is close to one end of a hopper and connected with the pushing rod.

4. A rotary feed apparatus according to claim 3, wherein: the push rod comprises a rod body and a block, the driving box is communicated with the discharge section of the hopper through an outer pipe fixed by bolts, the rod body is positioned in the outer pipe, the block is positioned in the discharge section, the block is of an inclined ladder structure, and the structure of the communication position of the discharge section and the outer pipe corresponds to the block.

5. A rotary feeder according to claim 1, characterized in that: the material pipe and the material cylinder are both positioned on the axis of the screw extruder, and when the supporting platform is deviated, the deviation angle of the axis of the material cylinder and the axis of the screw extruder is larger than 45 degrees.

6. A rotary feeder according to claim 1, characterized in that: the diameter of the charging barrel is smaller than that of the material pipe.