CN112277287A

CN112277287A - Feeding extrusion equipment of plastic extruder

Info

Publication number: CN112277287A
Application number: CN202011085998.1A
Authority: CN
Inventors: 陈伟敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-12
Filing date: 2020-10-12
Publication date: 2021-01-29

Abstract

The invention discloses a feeding extrusion device of a plastic extruder, which structurally comprises a support base plate, a motor, a transmission rod, an extrusion device, a bracket and a forming machine head, wherein the upper surface of the left end of the support base plate is fixedly provided with the motor, the output end of the motor and the transmission rod synchronously rotate, an opening and closing plate rotates downwards around a torsion shaft to improve the resistance inside a feed hopper, a gap plate extends out of the outer surface of a screw rod in the rotation process of the screw rod to prevent the flow of materials from increasing from a larger diameter gap to the feeding direction, the screw rod is in collision with a blocking plate in the rotation process, the blocking plate rotates around a rotating shaft, the blocking plate automatically resets through the elastic resetting of a blocking strip and a spring pipe sleeve, the gap formed between a machine barrel and the screw rod is reduced, then plastic melt flows onto a lug to accelerate the flow speed of the plastic melt, the plastic material is prevented from being decomposed in the machine barrel, and the quality of the plastic molding product is improved.

Description

Feeding extrusion equipment of plastic extruder

Technical Field

The invention relates to the field of plastic processing machines, in particular to a feeding extrusion device of a plastic extruder.

Background

The plastic material enters the extruder from the hopper, is conveyed forward under the drive of the rotation of the screw rod, is heated by the charging barrel and is melted under the shearing and compression actions brought by the screw rod in the forward movement process, and is molded through the neck mold to extrude a plastic model.

Disclosure of Invention

The technical scheme adopted by the invention for realizing the technical purpose is as follows: the feeding extrusion equipment of the plastic extruder structurally comprises a supporting base plate, a motor, a transmission rod, an extrusion device, a support and a forming machine head, wherein the motor is fixedly arranged on the upper surface of the left end of the supporting base plate, the output end of the motor and the transmission rod synchronously rotate, the right end of the transmission rod penetrates through the inside of the left end of the extrusion device in a clearance fit manner, the support is arranged on the outer side of the extrusion device, the bottom of the support is welded with the upper surface of the supporting base plate, the forming machine head is arranged at the right end of the extrusion device and communicated with the extrusion device, the extrusion device comprises a feeding hopper, a resistance shutter, a machine barrel, a screw rod, a telescopic mechanism, a stopper and a discharge plate, the lower end of the feeding hopper is fixedly arranged above the left end of the machine barrel and communicated with the machine barrel, the resistance shutter is arranged at the lower, the inside telescopic machanism that has inlayed in the screw rod outside, the stopper is established at the barrel inner wall to the stopper is located the screw rod outside, row's flitch fixed mounting is at the barrel right-hand member, and the flitch is located the stopper right side, the stopper is equipped with ten altogether to five are a set of, establish the upper and lower both ends at barrel right-hand member inner wall respectively.

As a further improvement of the invention, the resistance shutter comprises a torsion shaft, an opening and closing plate and a circulation hole, wherein the torsion shaft is arranged on the inner wall of the feed hopper, the torsion shaft is hinged with the inside of the right end of the opening and closing plate, the circulation hole penetrates through the inside of the opening and closing plate, the opening and closing plate is positioned at the lower end of the inside of the feed hopper, two torsion shafts and two opening and closing plates are arranged and are in a bilateral symmetry structure, the initial position of the opening and closing plate is in an inclined structure that the outer end is higher than the middle part, and the circulation hole is in a structure that the inlet is wide and the outlet is narrow, and thirty or fifteen torsion shafts and opening and closing.

As a further improvement of the invention, the telescopic mechanism comprises a gravity push rod, a gap plate and a wall scraping pipe, wherein the gravity push rod is arranged in the screw rod in a clearance fit manner, the outer side end of the gravity push rod is welded with the inner side surface of the gap plate, the wall scraping pipe is arranged on the outer side surface of the screw rod, the gravity push rod penetrates through the inside of the wall scraping pipe in a clearance fit manner, and the gravity push rod, the gap plate and the wall scraping pipe are all six in one group and are respectively arranged at two opposite ends of the outer side of the screw rod.

As a further improvement of the invention, the gap plate comprises a plate body and three cutters, wherein the inner side surface of the plate body is welded with the outer end of the gravity push rod, and the cutters are welded on the outer side surface of the plate body and are in a horizontal strip structure.

As a further improvement of the invention, the wall scraping pipe comprises an outer pipe, a connecting ring and two rejection plates, the gravity push rod penetrates through the outer pipe in a clearance fit mode, the inner end of the outer pipe is welded on the outer side surface of the screw rod, the connecting ring is hinged with the inner part of the outer pipe, the rejection plates are welded with the connecting ring and are abutted against the outer surface of the gravity push rod, the outer pipe is in a structure with a narrow inlet and a narrow outlet, and the two rejection plates are arranged and are in a vertically symmetrical structure by taking the connecting ring as the center.

As a further improvement of the invention, the stopper comprises a rotating shaft, a stopping plate, a blocking strip and a spring pipe sleeve, wherein the rotating shaft is hinged with the inner wall of the machine barrel, the lower end of the rotating shaft is welded with the stopping plate, the upper end of the blocking strip is welded on the inner wall of the machine barrel, the lower end of the blocking strip is arranged in the spring pipe sleeve in a clearance fit mode, the spring pipe sleeve is embedded in the right side of the stopping plate, the stopping plate is positioned on the left side of the discharging plate, and the stopping plate is arranged at the lower end of the rotating shaft in an.

As a further improvement of the invention, the discharging plate comprises a convex block, a shaking plate, a connecting shaft and a spring, the convex block is positioned on the right side of the blocking plate, the shaking plate is arranged inside the upper end of the convex block, the right end of the shaking plate is hinged with the inside of the right end of the convex block through the connecting shaft, the spring is embedded inside the convex block, the top end of the spring is fixed with the bottom surface of the shaking plate, and the upper end of the convex block is an inclined plane with a high left end and a low right.

The invention has the beneficial effects that:

1. the plastics material extrudees the opening and closing board, and at this moment the opening and closing board down rotates round the torsion shaft, improves the inside resistance of feeder hopper, and the screw rod is carrying out the pivoted in-process, carries out the gravity gliding through the gravity push rod for the clearance board stretches out and keeps away from the screw rod outside surface, prevents that the material from great diameter clearance department to the feeding direction flow increase, cuts the plastics material with higher speed through the cutter simultaneously.

2. The screw rod is contradicting with the barrier plate emergence in the pivoted in-process, at this moment the barrier plate rotates round the axis of rotation, elasticity through blocking strip and spring pipe box resets, make the barrier plate carry out automatic re-setting, reduce the clearance that forms between barrel and the screw rod, prevent that the plastics material from flowing toward the hopper direction at the in-process of carrying out the transport, the plastics melt flows on the lug after that, accelerate the flow rate of plastics melt, avoid plastics melt dwell time increase in the barrel, avoid the plastics material to take place to decompose inside the barrel, improve the quality of plastic molding product.

Drawings

FIG. 1 is a schematic structural view of a feeding extrusion apparatus of a plastic extruder according to the present invention.

FIG. 2 is a schematic view of the internal structure of an extrusion apparatus according to the present invention.

Fig. 3 is a schematic top view of the resistance shutter according to the present invention.

Fig. 4 is a schematic side view of a telescopic mechanism according to the present invention.

Fig. 5 is a schematic perspective view of a gap plate according to the present invention.

FIG. 6 is a schematic view of the internal structure of a scraped wall tube of the present invention.

Fig. 7 is a schematic structural diagram of a stopper of the present invention.

Fig. 8 is a schematic view of a partially enlarged structure at a position a of a stopper according to the present invention.

FIG. 9 is a schematic view of the internal structure of a take-off plate according to the present invention.

In the figure: a supporting bottom plate-1, a motor-2, a transmission rod-3, an extrusion device-4, a bracket-5, a forming machine head-6, a feed hopper-41, a resistance shutter-42, a machine barrel-43, a screw-44, a telescopic mechanism-45, a stopper-46, a discharge plate-47, a torsion shaft-421, an opening and closing plate-422 and a flow hole-423, the device comprises a gravity push rod-451, a gap plate-452, a wall scraping pipe-453, a plate body-52 a, a cutter-52 b, an outer pipe-53 a, a connecting ring-53 b, a removing plate-53 c, a rotating shaft-46 a, a blocking plate-46 b, a shielding strip-46 c, a spring pipe sleeve-46 d, a bump-471, a shaking plate-472, a connecting shaft-473 and a spring-474.

Detailed Description

The invention is further described below with reference to the accompanying drawings:

example 1:

as shown in figures 1 to 6:

the invention relates to a feeding extrusion device of a plastic extruder, which structurally comprises a supporting base plate 1, a motor 2, a transmission rod 3, an extrusion device 4, a bracket 5 and a forming machine head 6, wherein the upper surface of the left end of the supporting base plate 1 is fixedly provided with the motor 2, the output end of the motor 2 and the transmission rod 3 synchronously rotate, the right end of the transmission rod 3 penetrates through the inside of the left end of the extrusion device 4 in a clearance fit manner, the bracket 5 is arranged on the outer side of the extrusion device 4, the bottom of the bracket 5 is welded with the upper surface of the supporting base plate 1, the forming machine head 6 is arranged at the right end of the extrusion device 4 and is communicated with the right end of the extrusion device 4, the extrusion device 4 comprises a feed hopper 41, a resistance shutter 42, a cylinder 43, a screw 44, a telescopic mechanism 45, a stopper 46 and a discharge plate 47, the lower end of the feed hopper 41 is fixedly, the inside screw rod 44 that is equipped with of barrel 43 to screw rod 44 left end and the right-hand member of transfer line 3 are welded mutually, telescopic machanism 45 has been inlayed to the screw rod 44 outside, stopper 46 is established at barrel 43 inner wall, and stopper 46 is located the screw rod 44 outside, row's flitch 47 fixed mounting is at barrel 43 right-hand member to row flitch 47 is located stopper 46 right side, stopper 46 is equipped with ten altogether, and five are a set, establish respectively at the upper and lower both ends of barrel 43 right-hand member inner wall, reduce the clearance that forms between barrel 43 and the screw rod 44, prevent that the plastics material from flowing towards feeder hopper 41 direction in the in-process of carrying out the transport.

Wherein, resistance shutter 42 includes torsion shaft 421, switching board 422, circulation hole 423, torsion shaft 421 installs on feeder hopper 41 inner wall, torsion shaft 421 is articulated mutually with switching board 422 right-hand member inside to switching board 422 is inside to run through there is circulation hole 423, switching board 422 is located the inside lower extreme of feeder hopper 41, torsion shaft 421 and switching board 422 all are equipped with two to be bilateral symmetry structure, switching board 422's initial position is in the low slope structure in the high middle part of outer end, prevents that the extrusion molding material from taking place the refluence in feeder hopper 41 is inside, reduces feeder hopper 41's hourglass material volume simultaneously, circulation hole 423 is the narrow structure of wide export of import, is equipped with thirty, and fifteen is a set of, establishes respectively on two switching boards 422, does benefit to the plastics material and normally circulates on switching board 422, prevents the inside jam that takes place of feeder hopper 41.

The telescopic mechanism 45 comprises a gravity push rod 451, a gap plate 452 and a wall scraping pipe 453, wherein the gravity push rod 451 is installed inside the screw 44 in a clearance fit mode, the outer end of the gravity push rod 451 is welded with the inner side surface of the gap plate 452, the wall scraping pipe 453 is arranged on the outer side surface of the screw 44, the gravity push rod 451 penetrates through the wall scraping pipe 453 in a clearance fit mode, six gravity push rods 451, the gap plate 452 and the wall scraping pipe 453 are arranged in a group and are respectively arranged at two opposite ends of the outer side of the screw 44, the gravity push rod 451 slides downwards freely in the rotating process, the gap plate 452 is pushed out to be far away from the outer surface of the screw 44, the gap between the screw 44 and the inner portion of the machine barrel 43 is reduced, and the flow rate of materials from the larger diameter gap to the feeding direction is prevented from increasing.

The gap plate 452 comprises a plate body 52a and cutters 52b, the inner side surface of the plate body 52a is welded to the outer side end of the gravity push rod 451, the cutters 52b are welded to the outer side surface of the plate body 52a, the cutters 52b are in a cross bar structure and are three in number, so that the contact between the plate body 52a and plastic materials is facilitated, and the plastic materials are cut quickly.

The wall scraping pipe 453 comprises an outer pipe 53a, a connecting ring 53b and a removing plate 53c, the gravity push rod 451 penetrates through the outer pipe 53a in a clearance fit mode, the inner end of the outer pipe 53a is welded to the outer side surface of the screw 44, the connecting ring 53b is hinged and connected with the inner portion of the outer pipe 53a, the removing plate 53c is welded to the connecting ring 53b, the removing plate 53c is abutted to the outer surface of the gravity push rod 451, the outer pipe 53a is of a structure with a narrow inlet and a narrow outlet, so that plastic melt adhered to the outer portion of the gravity push rod 451 can be scraped, the removing plate 53c is provided with two plates, the connecting ring 53b is of an up-and-down symmetrical structure, the surface of the gravity push rod 451 can be cleaned more cleanly in the process of telescopic sliding, and the plastic melt can be prevented from entering the screw 44.

The specific use mode and function of the embodiment are as follows:

in the invention, the starting motor 2 drives the screw 44 to rotate through the rotation of the transmission rod 3, then the plastic material is put into the feeding hopper 41, the plastic material extrudes the opening and closing plate 422, the opening and closing plate 422 rotates downwards around the torsion shaft 421 at the moment, the resistance in the feeding hopper 41 is improved, the backflow of the plastic material is reduced, meanwhile, the plastic material normally circulates through the circulation hole 423, the plastic material enters the machine barrel 43 and then is spirally rotated through the screw 44 to extrude and shear the plastic material, the plastic material is melted, the screw 44 slides downwards through the gravity push rod 451 during the rotation process, so that the gap plate 452 extends out and is far away from the outer surface of the screw 44, thereby reducing the gap between the screw 44 and the machine barrel 43 and preventing the material from increasing from a larger diameter gap to the feeding direction, simultaneously through cutter 52b with higher speed to the plastics material shear to the gravity push rod 451 is carrying out the in-process of stretching out and retracting, scrapes off the remaining plastics melt in the gravity push rod 451 outside preliminary through outer tube 53a, and through the connection of go-between 53b afterwards for reject board 53c and gravity push rod 451 outside surface and carry out inseparable conflict, get rid of gravity push rod 451 melt on the surface comprehensively, prevent that the melt from entering into inside the screw rod 44.

Example 2:

as shown in fig. 7 to 9:

wherein, stopper 46 includes axis of rotation 46a, barrier plate 46b, sheltering from strip 46c, spring tube box 46d, axis of rotation 46a is articulated mutually with barrel 43 inner wall, and axis of rotation 46a lower extreme and barrier plate 46b weld mutually, shelter from strip 46c upper end and weld at barrel 43 inner wall, and shelter from strip 46c lower extreme and adopt clearance fit to install inside spring tube box 46d, spring tube box 46d inlays inside barrier plate 46b right side, barrier plate 46b is located row material plate 47 left side, barrier plate 46b is installed at the lower extreme of axis of rotation 46a at the angle of inclination, and the screw rod 44 is carrying out pivoted in-process, conflicts barrier plate 46b to make the angle of barrier plate 46b change and prevent to bump screens between barrier plate 46b and the screw rod 44.

Wherein, arrange material plate 47 and include the lug 471, tremble board 472, connecting axle 473, spring 474, lug 471 is located and blocks the board 46b right side, tremble board 472 and install inside lug 471 upper end to tremble board 472 right-hand member and pass through connecting axle 473 and lug 471 right-hand member inside looks articulated, spring 474 inlays inside lug 471 to spring 474 top is fixed mutually with tremble board 472 bottom surface, lug 471 upper end is the high low inclined plane of right-hand member of left end, does benefit to and discharges the plastics melt, prevents that the plastics melt from stopping inside barrel 43, avoids the plastics material to take place to decompose inside barrel 43.

The specific use mode and function of the embodiment are as follows:

in the present invention, the shielding strip 46c is disposed at the gap between the screws 44, the screws 44 collide with the blocking plate 46b during the rotation process, at this time, the blocking plate 46b rotates around the rotation shaft 46a, and the shielding strip 46c elastically extrudes inside the spring tube 46d to prevent the blocking plate 46b from colliding and clamping with the screws 44, and then the blocking plate 46b automatically resets by the elastic resetting of the shielding strip 46c and the spring tube 46d to reduce the gap formed between the barrel 43 and the screws 44, prevent the plastic material from flowing toward the feeding hopper 41 during the transportation process, and then the plastic melt flows onto the bump 471, so as to accelerate the flowing speed of the plastic melt, and at the same time, the spring 474 generates the ejection force by the extrusion, thereby driving the shaking plate 472 to shake and prevent the plastic melt from remaining inside the bump 471, the residence time of the plastic melt in the machine barrel 43 is prevented from increasing, the plastic material is prevented from being decomposed in the machine barrel 43, and the quality of the plastic molding product is improved.

The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention to achieve the above technical effects.

Claims

1. The utility model provides a plastics extruder's feeding extrusion equipment, its structure includes supporting baseplate (1), motor (2), transfer line (3), extrusion device (4), support (5), forming head (6), fixed surface installs motor (2) on supporting baseplate (1) left end to motor (2) output and transfer line (3) synchronous rotation, transfer line (3) right-hand member adopts clearance fit to run through inside extrusion device (4) left end, extrusion device (4) outside is equipped with support (5) to support (5) bottom and supporting baseplate (1) upper surface weld mutually, forming head (6) are installed at extrusion device (4) right-hand member and are link up mutually, its characterized in that:

extrusion device (4) include feeder hopper (41), resistance shutter (42), barrel (43), screw rod (44), telescopic machanism (45), stopper (46), row flitch (47), feeder hopper (41) lower extreme is embedded solid and is installed in barrel (43) left end top and link up mutually, the inside lower extreme of feeder hopper (41) is equipped with resistance shutter (42), barrel (43) inside is equipped with screw rod (44) to screw rod (44) left end and transfer line (3) right-hand member are welded mutually, telescopic machanism (45) have been inlayed to screw rod (44) outside inside, stopper (46) are established at barrel (43) inner wall to stopper (46) are located the screw rod (44) outside, row flitch (47) fixed mounting is at barrel (43) right-hand member to row flitch (47) are located stopper (46) right side.

2. A feed extrusion apparatus for a plastic extruder as recited in claim 1, wherein: resistance shutter (42) include torsion shaft (421), switching board (422), circulation hole (423), torsion shaft (421) are installed on feeder hopper (41) inner wall, torsion shaft (421) are articulated mutually with switching board (422) right-hand member is inside to inside through there is circulation hole (423) switching board (422), switching board (422) are located feeder hopper (41) inside lower extreme.

3. A feed extrusion apparatus for a plastic extruder as recited in claim 1, wherein: the telescopic mechanism (45) comprises a gravity push rod (451), a gap plate (452) and a wall scraping pipe (453), wherein the gravity push rod (451) is installed inside the screw rod (44) in a clearance fit mode, the outer side end of the gravity push rod (451) is welded with the inner side surface of the gap plate (452), the wall scraping pipe (453) is arranged on the outer side surface of the screw rod (44), and the gravity push rod (451) penetrates through the inside of the wall scraping pipe (453) in a clearance fit mode.

4. A feed extrusion apparatus for a plastic extruder as recited in claim 3, wherein: the gap plate (452) comprises a plate body (52a) and a cutter (52b), the inner side surface of the plate body (52a) is welded with the outer side end of the gravity push rod (451), and the cutter (52b) is welded on the outer side surface of the plate body (52 a).

5. A feed extrusion apparatus for a plastic extruder as recited in claim 3, wherein: the wall scraping pipe (453) comprises an outer pipe (53a), a connecting ring (53b) and a rejection plate (53c), the gravity push rod (451) penetrates through the outer pipe (53a) in a clearance fit mode, the inner end of the outer pipe (53a) is welded to the outer side surface of the screw rod (44), the connecting ring (53b) is hinged and connected with the inner portion of the outer pipe (53a), the rejection plate (53c) is welded with the connecting ring (53b), and the rejection plate (53c) is in contact with the outer surface of the gravity push rod (451).

6. A feed extrusion apparatus for a plastic extruder as recited in claim 1, wherein: stopper (46) include axis of rotation (46a), stop plate (46b), shielding strip (46c), spring tube box (46d), axis of rotation (46a) are articulated mutually with barrel (43) inner wall to axis of rotation (46a) lower extreme and stop plate (46b) are welded mutually, shielding strip (46c) upper end is welded in barrel (43) inner wall to shielding strip (46c) lower extreme adopts clearance fit to install inside spring tube box (46d), spring tube box (46d) inlay inside stop plate (46b) right side, stop plate (46b) are located row material board (47) left side.

7. A feed extrusion apparatus for a plastic extruder as recited in claim 6, wherein: the discharging plate (47) comprises a convex block (471), a shaking plate (472), a connecting shaft (473) and a spring (474), the convex block (471) is located on the right side of the blocking plate (46b), the shaking plate (472) is installed inside the upper end of the convex block (471), the right end of the shaking plate (472) is hinged with the inside of the right end of the convex block (471) through the connecting shaft (473), the spring (474) is embedded inside the convex block (471), and the top end of the spring (474) is fixed to the bottom surface of the shaking plate (472).