CN217258266U - Screw extruder with adjustable length-diameter ratio - Google Patents

Abstract

The utility model discloses a screw extruder of adjustable draw-ratio relates to screw extruder technical field, is not convenient for the problem of adjusting for the draw-ratio of solving the ordinary screw extruder among the prior art. The utility model discloses a structure, including a barrel, an extrusion cylinder, first regulation pivot, and first regulation pivot and input shaft sliding connection, the one end of first regulation pivot is installed the second and is adjusted the pivot, and second regulation pivot and first regulation pivot sliding connection, the one end of input shaft and first regulation pivot is provided with the slip pipe, and input shaft and first regulation pivot all set up structure as an organic whole with the slip pipe, the inside of first regulation pivot is provided with communicating pipe, and sets up structure as an organic whole with first regulation pivot communicating pipe, the connector is installed to the one end of slip pipe, and connector and slip pipe fixed connection, the internally mounted of first regulation pivot has return spring.

Description

Screw extruder with adjustable length-diameter ratio

Technical Field

The utility model relates to a screw extruder technical field specifically is a screw extruder of adjustable draw ratio.

Background

The extruder can divide the machine head into a right-angle machine head, an oblique-angle machine head and the like according to the material flow direction of the machine head and the included angle of the central line of the screw rod, the screw extruder can fully plasticize and uniformly mix materials by means of pressure and shearing force generated by rotation of the screw rod, and the plastic extruder can be basically classified into a double-screw extruder, a single-screw extruder, an infrequent multi-screw extruder and a non-screw extruder through the shaping of a neck mold.

The extrusion screws of the common screw extruder are fixed, and the length of the screws cannot be adjusted, so that the length-diameter ratio is inconvenient to adjust, and the screw extruder is not convenient and fast to use; therefore, the market urgently needs to develop a screw extruder with adjustable length-diameter ratio to help people solve the existing problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a screw extruder of adjustable draw-down ratio to solve the problem that the draw-down ratio of the ordinary screw extruder who provides is not convenient for adjust among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a screw extruder of adjustable draw ratio, includes the extrusion cylinder, the internally mounted of extrusion cylinder has the input shaft, first regulation pivot is installed to the one end of input shaft, and first regulation pivot and input shaft sliding connection, the second regulation pivot is installed to the one end of first regulation pivot, and second regulation pivot and first regulation pivot sliding connection, the one end of input shaft and first regulation pivot is provided with the slip pipe, and input shaft and first regulation pivot all set up structure as an organic whole with the slip pipe.

Preferably, the inside of first regulation pivot is provided with communicating pipe, and sets up structure as an organic whole with first regulation pivot communicating pipe, the connector is installed to the one end of slip pipe, and connector and slip pipe fixed connection, the internally mounted of first regulation pivot has return spring, connector and first regulation pivot all with return spring fixed connection.

Preferably, the internally mounted of extrusion cylinder has the slip axle bed, and slip axle bed and extrusion cylinder sliding connection, the flood dragon dish is all installed in the outside of input shaft, first regulation pivot and second regulation pivot, and input shaft, first regulation pivot and second regulation pivot all with flood dragon dish welded connection.

Preferably, a fixed shaft seat is installed at one end of the extrusion cylinder, the fixed shaft seat is fixedly connected with the extrusion cylinder through a fastening screw, the fixed shaft seat is rotatably connected with the input shaft through a bearing, a compression cylinder is installed at the other end of the extrusion cylinder, and the compression cylinder is fixedly connected with the extrusion cylinder through the fastening screw.

Preferably, the electric heater is installed in the outside of extruding the section of thick bamboo, and the electric heater passes through fastening screw fixed connection with the extruding section of thick bamboo, the base is installed to the below of electric heater, and the base passes through fastening screw fixed connection with electric heater, the feeder hopper is installed to the top of extruding the section of thick bamboo, and the feeder hopper passes through fastening screw fixed connection with the extruding section of thick bamboo.

Preferably, the bearing seat is installed to the top of base, and the bearing seat passes through fastening screw fixed connection with the base, the motor is installed to last one of bearing seat, and motor and bearing seat pass through fastening screw fixed connection, the reduction gear is installed to one side of motor, and the reduction gear passes through shaft coupling fixed connection with the motor, the reduction gear passes through shaft coupling fixed connection with the input shaft.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a setting through first regulation pivot and second regulation pivot, first regulation pivot is provided with threely, first regulation pivot is the same with the inner structure of second regulation pivot, all can be to its inside pressurization highly-compressed air, thereby order about separation between the first regulation pivot, separation between first regulation pivot and the second regulation pivot, nevertheless not the complete separation, but the terminal surface extends forward, thereby improve the length of whole pivot, under the unchangeable condition of flood dragon dish external diameter, adjust the draw ratio of whole screw rod, thereby improve the conveying distance of screw rod, make this screw rod extruder use more convenient.

2. The utility model discloses a through the setting of slip axle bed, the slip axle bed is connected with the second regulation pivot, takes place the displacement between first regulation pivot and second regulation pivot, when extending to holistic screw rod structure, the slip axle bed will adjust the pivot to first regulation pivot and second and carry on spacingly to make first regulation pivot and second adjust the pivot more stable when rotating.

Drawings

FIG. 1 is a front view of an adjustable length/diameter screw extruder of the present invention;

FIG. 2 is a cross-sectional view of an adjustable length to diameter screw extruder of the present invention;

fig. 3 is a sectional view of the first adjusting rotating shaft of the present invention.

In the figure: 1. a base; 2. an extrusion cylinder; 3. a compression cylinder; 4. an electric heater; 5. a feed hopper; 6. a bearing seat; 7. a motor; 8. a speed reducer; 9. fixing the shaft seat; 10. a first adjusting rotating shaft; 11. a second adjusting rotating shaft; 12. a flood dragon plate; 13. a sliding shaft seat; 14. an input shaft; 15. a sliding tube; 16. a communicating pipe; 17. a return spring; 18. a connector; 19. a gas collection tank; 20. a gas delivery pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, the present invention provides an embodiment: the utility model provides a screw extruder of adjustable draw ratio, including extruding cylinder 2, the internally mounted of extruding cylinder 2 has input shaft 14, first regulation pivot 10 is installed to the one end of input shaft 14, first regulation pivot 10 and 14 sliding connection of input shaft, second regulation pivot 11 is installed to the one end of first regulation pivot 10, second regulation pivot 11 and first regulation pivot 10 sliding connection, the one end of input shaft 14 and first regulation pivot 10 is provided with sliding tube 15, input shaft 14 and first regulation pivot 10 all set up structure as an organic whole with sliding tube 15.

Further, the inside of the first adjusting rotating shaft 10 is provided with a communicating pipe 16, the communicating pipe 16 and the first adjusting rotating shaft 10 are arranged to be of an integral structure, a connector 18 is installed at one end of the sliding pipe 15, the connector 18 is fixedly connected with the sliding pipe 15, a return spring 17 is installed inside the first adjusting rotating shaft 10, the connector 18 and the first adjusting rotating shaft 10 are both fixedly connected with the return spring 17, the internal structure of the first adjusting rotating shaft 10 is the same as that of the second adjusting rotating shaft 11, and the input shaft 14, the inside of the first adjusting rotating shaft 10 and the inside of the second adjusting rotating shaft 11 are both in a hollow state.

Further, the internally mounted of extrusion cylinder 2 has slip axle bed 13, slip axle bed 13 and 2 sliding connection of extrusion cylinder, and input shaft 14, first regulation pivot 10 and second are adjusted the outside of pivot 11 and are installed and all install flood dragon dish 12, and input shaft 14, first regulation pivot 10 and second are adjusted pivot 11 and all are coiled 12 welded connection with flood dragon, and first regulation pivot 10 is provided with threely.

Further, a fixed shaft seat 9 is installed at one end of the extruding cylinder 2, the fixed shaft seat 9 is fixedly connected with the extruding cylinder 2 through a fastening screw, the fixed shaft seat 9 is rotatably connected with the input shaft 14 through a bearing, the compression cylinder 3 is installed at the other end of the extruding cylinder 2, the compression cylinder 3 is fixedly connected with the extruding cylinder 2 through the fastening screw, a gas collecting box 19 is installed on the outer side of the input shaft 14, the input shaft 14 is communicated with the gas collecting box 19, a gas conveying pipe 20 is installed above the gas collecting box 19, and the gas conveying pipe 20 is fixedly connected with the gas collecting box 19.

Further, an electric heater 4 is installed on the outer side of the extrusion cylinder 2, the electric heater 4 is fixedly connected with the extrusion cylinder 2 through fastening screws, a base 1 is installed below the electric heater 4, the base 1 is fixedly connected with the electric heater 4 through fastening screws, a feeding hopper 5 is installed above the extrusion cylinder 2, and the feeding hopper 5 is fixedly connected with the extrusion cylinder 2 through fastening screws.

Further, a bearing seat 6 is installed above the base 1, the bearing seat 6 is fixedly connected with the base 1 through a fastening screw, a motor 7 is installed on the bearing seat 6, the motor 7 is fixedly connected with the bearing seat 6 through the fastening screw, a speed reducer 8 is installed on one side of the motor 7, the speed reducer 8 is fixedly connected with the motor 7 through a coupler, and the speed reducer 8 is fixedly connected with the input shaft 14 through a coupler.

The working principle is as follows: when in use, plastic is added into the extrusion cylinder 2 through the feed hopper 5, the plastic is heated and melted through the electric heater 4, the motor 7 is started, the motor 7 drives the input shaft 14 to rotate after being decelerated through the reducer 8, the input shaft 14 drives the first adjusting rotating shaft 10 and the second adjusting rotating shaft 11 to rotate, thereby driving the flood dragon disc 12 to rotate, thereby conveying the plastic in a molten state, when the length-diameter ratio of the screw rod needs to be adjusted, high-pressure air flow is conveyed to the inside of the air collecting box 19 through the air conveying pipe 20, the high-pressure air flow can be conveyed to the inside of the first adjusting rotating shaft 10 and the second adjusting rotating shaft 11 through the input shaft 14, thereby driving the first adjusting rotating shaft 10 and the second adjusting rotating shaft 11 to separate from each other, and generating displacement, thereby adjusting the length of the whole rotating shaft, realizing the adjustment of the length-diameter ratio of the screw rod, and finally extruding the molten plastic through the compression cylinder 3.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. The utility model provides a screw extruder of adjustable draw ratio, includes an extrusion section of thick bamboo (2), its characterized in that: the internally mounted who extrudes a section of thick bamboo (2) has input shaft (14), first regulation pivot (10) are installed to the one end of input shaft (14), and first regulation pivot (10) and input shaft (14) sliding connection, second regulation pivot (11) are installed to the one end of first regulation pivot (10), and second regulation pivot (11) and first regulation pivot (10) sliding connection, the one end of input shaft (14) and first regulation pivot (10) is provided with slip pipe (15), and input shaft (14) and first regulation pivot (10) all set up structure as an organic whole with slip pipe (15).

2. Screw extruder with adjustable length/diameter ratio according to claim 1, characterized in that: the inside of first regulation pivot (10) is provided with communicating pipe (16), and communicating pipe (16) and first regulation pivot (10) set up structure as an organic whole, connector (18) are installed to the one end of slip pipe (15), and connector (18) and slip pipe (15) fixed connection, the internally mounted of first regulation pivot (10) has return spring (17), connector (18) and first regulation pivot (10) all with return spring (17) fixed connection.

3. The screw extruder with adjustable length-diameter ratio according to claim 1, wherein: the internally mounted of extruding cylinder (2) has slip axle bed (13), and slip axle bed (13) and extruding cylinder (2) sliding connection, the flood dragon dish (12) is all installed in the outside of input shaft (14), first regulation pivot (10) and second regulation pivot (11), and input shaft (14), first regulation pivot (10) and second regulation pivot (11) all with flood dragon dish (12) welded connection.

4. Screw extruder with adjustable length/diameter ratio according to claim 1, characterized in that: fixed axle seat (9) is installed to the one end of extruding a section of thick bamboo (2), and fixed axle seat (9) and extrude a section of thick bamboo (2) and pass through fastening screw fixed connection, fixed axle seat (9) are rotated through the bearing with input shaft (14) and are connected, a compression section of thick bamboo (3) is installed to the other end of extruding a section of thick bamboo (2), and a compression section of thick bamboo (3) and an extrusion section of thick bamboo (2) pass through fastening screw fixed connection.

5. The screw extruder with adjustable length-diameter ratio according to claim 1, wherein: electric heater (4) are installed in the outside of extruding cylinder (2), and electric heater (4) and extruding cylinder (2) through fastening screw fixed connection, base (1) is installed to the below of electric heater (4), and base (1) and electric heater (4) pass through fastening screw fixed connection, feeder hopper (5) are installed to the top of extruding cylinder (2), and feeder hopper (5) and extruding cylinder (2) pass through fastening screw fixed connection.

6. A screw extruder with adjustable length/diameter ratio, according to claim 5, characterized in that: bearing seat (6) are installed to the top of base (1), and bearing seat (6) pass through fastening screw fixed connection with base (1), last one of bearing seat (6) sends out that and installs motor (7), and motor (7) and bearing seat (6) pass through fastening screw fixed connection, reduction gear (8) are installed to one side of motor (7), and reduction gear (8) pass through shaft coupling fixed connection with motor (7), reduction gear (8) pass through shaft coupling fixed connection with input shaft (14).

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