Lifting adjusting mechanism of double-screw extrusion mechanism

Abstract

The utility model discloses a lifting adjusting mechanism of a double-screw extrusion mechanism. The lifting adjusting mechanism comprises a base, a lifting platform is arranged on the base, an extrusion barrel is arranged on the lifting platform, two screw rods are rotationally arranged in the extrusion barrel, and a driving assembly for driving the two screw rods to rotate is arranged on the base; the driving assembly comprises a second driving motor, a speed reducer, a first transmission roller, a second transmission roller, a third transmission roller and an adjusting roller, the second driving motor is started to drive the first transmission roller to rotate, and the first transmission roller drives the third transmission roller to rotate by adjusting the position of the adjusting roller; the third transmission roller drives the second transmission roller to rotate and the two screw rods to rotate, when the double-screw extruder is large in size, only the extrusion barrel and the two screw rods are driven to ascend and descend through the lifting platform assembly, lifting adjustment does not need to be conducted on the driving assembly, and the situation that a lifting device needs to support power in operation of the double-screw extruder is avoided; and the sideslip phenomenon is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic processing, and the specific field is a lifting adjusting mechanism of double screw extrusion mechanism. BACKGROUND

[0002] The double screw extruder is developed on the basis of the single screw extruder, has good feeding performance, mixing plasticizing performance, exhaust performance, extrusion stability and the like, and can be used for physical processing procedures such as conveying, pressurizing, melting, exhausting, dehumidifying, melt conveying and pumping of plastic solids, and has obvious advantages in effect compared with the general single screw extruder.

[0003] The previous double screw extruder cannot be lifted in general, cannot be adjusted in height according to the needs of the staff, and has poor applicability, so the double screw extruder that can be lifted and adjusted in height appears now;

[0004] However, in the working process of the double screw extruder, when the double screw extruder is large in size, the lifting device is difficult to stably support the power in the operation of the double screw extruder, and side slipping is prone to occur, and therefore, the lifting adjusting mechanism of the double screw extrusion mechanism is provided. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a lifting adjusting mechanism of double screw extrusion mechanism to solve the problem that in the working process of the double screw extruder, when the double screw extruder is large in size, the lifting device is difficult to stably support the power in the operation of the double screw extruder, and side slipping is prone to occur.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a lifting adjusting mechanism of double screw extrusion mechanism, including base, being equipped with lifting platform subassembly on the base, being equipped with extrusion cylinder on the lifting platform subassembly, two helical rods are rotationally installed in the inside of the extrusion cylinder, the base is equipped with the drive assembly that drives the rotation of two helical rods one side of the lifting platform subassembly,

[0007] The drive assembly includes a second drive motor arranged on the base, a reducer is arranged on the drive end of the second drive motor, a first transmission roller is arranged on the output end of the reducer, a second transmission roller is arranged on the shaft end of each of the two helical rods, the two second transmission rollers are connected by a belt, a third transmission roller is further arranged on the shaft end of the lower helical rod, an adjusting roller is arranged on the base and can move forward and backward, and the first transmission roller, the third transmission roller and the adjusting roller are connected by a belt.

[0008] Preferably, the base is provided with an adjusting assembly for driving the adjusting roller to move forward and backward.

[0009] The adjusting assembly comprises an electric cylinder arranged on the base, an output end of the electric cylinder is provided with a mounting seat, the adjusting roller is rotatably arranged on the mounting seat, and a pressure sensor is arranged on the electric cylinder.

[0010] Preferably, the lifting platform assembly comprises a mounting platform arranged above the base for mounting the extrusion barrel, a first driving motor is arranged on the base, a bidirectional threaded rod is arranged on the driving end of the first driving motor, two sliding blocks are oppositely arranged on the bidirectional threaded rod, a plurality of pairs of X-shaped telescopic frames are arranged between the mounting platform and the base, the upper end and the lower end of the X-shaped telescopic frame arranged on the outer side are hingedly connected with the base and the mounting platform respectively, the bottom end of the X-shaped telescopic frame arranged on the inner side is hingedly connected with the sliding block, and the top end of the X-shaped telescopic frame arranged on the inner side is slidingly connected with the bottom surface of the mounting platform.

[0011] Preferably, the top end of the X-shaped telescopic frame arranged on the inner side is provided with a resisting roller.

[0012] Preferably, a plurality of guide rods are arranged on the base and sequentially penetrate the two sliding blocks.

[0013] Compared with the prior art, the lifting adjusting mechanism of the double-screw extrusion mechanism has the advantages that in the working process of the double-screw extruder, the lifting platform assembly drives the extrusion barrel and the two screw rods to adjust the height, the second driving motor is started to drive the first transmission roller to rotate, the position of the adjusting roller is adjusted, the first transmission roller drives the third transmission roller to rotate, the third transmission roller drives the second transmission roller arranged below to rotate, the two second transmission rollers are connected through a belt, the two screw rods are driven to rotate, when the double-screw extruder has a large size, the lifting platform assembly only drives the extrusion barrel and the two screw rods to lift, the driving assembly does not need to be lifted and adjusted, the lifting device does not need to support the power in the operation of the double-screw extruder, and the phenomenon of side slipping is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a main sectional view structure schematic diagram of the utility model;

[0015] Fig. 2 It is a right sectional view structure schematic diagram of the utility model.

[0016] In the figure: 1, base; 2, lifting platform assembly; 2-1, mounting platform; 2-2, first drive motor; 2-3, bidirectional threaded rod; 2-4, sliding block; 2-5, X-shaped telescopic frame; 2-6, abutting roller; 2-7, guide rod; 3, extrusion cylinder; 4, screw rod; 5, drive assembly; 5-1, second drive motor; 5-2, speed reducer; 5-3, first transmission roller; 5-4, second transmission roller; 5-5, third transmission roller; 5-6, adjusting roller; 6, adjusting assembly; 6-1, electric cylinder; 6-2, mounting seat; 6-3, pressure sensor. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0018] Please refer to Figs. 1-2 The utility model provides a kind of technical scheme: a lifting adjusting mechanism of double screw extrusion mechanism, including base 1, base 1 is equipped with lifting platform assembly 2, lifting platform assembly 2 is equipped with extrusion cylinder 3, two screw rods 4 are rotationally installed in the inside of extrusion cylinder 3 in parallel, and driving assembly 5 for driving the rotation of two screw rods 4 is equipped on base 1 and located at one side of lifting platform assembly 2;During the working process of double screw extruder, lifting platform assembly 2 drives extrusion cylinder 3 and two screw rods 4 to adjust height, and two screw rods 4 can be driven to rotate by driving assembly 5, when the volume of double screw extruder is larger, lifting platform assembly 2 only drives extrusion cylinder 3 and two screw rods 4 to lift, without lifting driving assembly 5, avoid that lifting device needs to support power in the operation of double screw extruder, prevent the phenomenon of sideslip.

[0019] The driving assembly 5 comprises a second driving motor 5-1 arranged on the base 1, the driving end of the second driving motor 5-1 is provided with a speed reducer 5-2, the output end of the speed reducer 5-2 is provided with a first transmission roller 5-3, the rotating shaft end of each of the two spiral rods 4 is provided with a second transmission roller 5-4, the two second transmission rollers 5-4 are belt driven, the rotating shaft end of the lower spiral rod 4 is further provided with a third transmission roller 5-5, the base 1 is provided with an adjustable roller 5-6 which can move forward and backward, the first transmission roller 5-3, the third transmission roller 5-5 and the adjustable roller 5-6 are belt driven, in use, the second driving motor 5-1 is started to drive the first transmission roller 5-3 to rotate in cooperation with the speed reducer 5-2, the position of the adjustable roller 5-6 is adjusted to drive the third transmission roller 5-5 to rotate by the first transmission roller 5-3, the second transmission roller 5-4 located below is driven to rotate by the third transmission roller 5-5, the two spiral rods 4 are driven to rotate by the belt connection between the two second transmission rollers 5-4, and the two spiral rods 4 are driven by the driving assembly 5 arranged.

[0020] Specifically, the base 1 is provided with an adjusting assembly 6 for driving the adjustable roller 5-6 to move forward and backward; the adjusting assembly 6 comprises an electric cylinder 6-1 arranged on the base 1, the output end of the electric cylinder 6-1 is provided with a mounting seat 6-2, the adjustable roller 5-6 is rotatably mounted on the mounting seat 6-2, the electric cylinder 6-1 is provided with a pressure sensor 6-3, the pressure sensor 6-3 is used for detecting the pressure of the belt acting on the adjustable roller 5-6, when the lifting platform assembly 2 adjusts the height, the electric cylinder 6-1 is started to drive the mounting seat 6-2 and the adjustable roller 5-6 to move according to the pressure of the belt acting on the adjustable roller 5-6, so as to ensure the tightness of the belt between the first transmission roller 5-3, the third transmission roller 5-5 and the adjustable roller 5-6, and ensure that the first transmission roller 5-3 drives the third transmission roller 5-5 to rotate.

[0021] Specifically, the lifting platform assembly 2 comprises a mounting platform 2-1 above the base 1 for mounting the extrusion barrel 3, the base 1 is provided with a first driving motor 2-2, the driving end of the first driving motor 2-2 is provided with a bidirectional threaded rod 2-3, two sliders 2-4 are oppositely arranged on the bidirectional threaded rod 2-3, a plurality of pairs of X-shaped telescopic supports 2-5 are arranged between the mounting platform 2-1 and the base 1, at least two pairs of X-shaped telescopic supports 2-5 are arranged, four X-shaped telescopic supports 2-5 are respectively arranged at the four corners of the bottom of the mounting platform 2-1, the upper and lower ends of the outer X-shaped telescopic supports 2-5 are respectively hingedly connected with the base 1 and the mounting platform 2-1, the bottom end of the inner X-shaped telescopic supports 2-5 is hingedly connected with the slider 2-4, and the top end of the inner X-shaped telescopic supports 2-5 is slidingly connected with the bottom surface of the mounting platform 2-1, when the height needs to be adjusted, the first driving motor 2-2 is started to drive the bidirectional threaded rod 2-3 to rotate, the two sliders 2-4 are relatively moved by the rotation of the bidirectional threaded rod 2-3, the bottom end of the inner X-shaped telescopic supports 2-5 is moved by the movement of the slider 2-4, the angle of the X-shaped telescopic supports 2-5 is changed, the plurality of X-shaped telescopic supports 2-5 are simultaneously telescoped, the mounting platform 2-1 is driven to ascend and descend, and the extrusion barrel 3 and the two screw rods 4 are driven to ascend and descend by the lifting platform assembly 2 to adjust the height.

[0022] Specifically, the top end of the inner X-shaped telescopic supports 2-5 is provided with a resisting roller 2-6, the resisting roller 2-6 slides on the bottom surface of the mounting platform 2-1 when the lifting platform assembly 2 adjusts the height, and the friction between the top end of the inner X-shaped telescopic supports 2-5 and the bottom surface of the mounting platform 2-1 is effectively avoided by arranging the resisting roller 2-6, so that the stable operation of the lifting platform assembly 2 is ensured.

[0023] Specifically, the base 1 is provided with a plurality of guide rods 2-7 which sequentially penetrate the two sliders 2-4, the guide rods 2-7 are arranged at least two, and are respectively arranged at the two sides of the bidirectional threaded rod 2-3, so that the sliders 2-4 can be kept stable, the stability of the relative movement of the two sliders 2-4 is effectively ensured by arranging the guide rods 2-7, and the stable operation of the lifting platform assembly 2 is ensured.

[0024] Working principle: when the utility model works, first, the lifting platform assembly 2 is started to drive the extrusion barrel 3 and the two screw rods 4 to adjust the height, and the position of the adjusting roller 5-6 is adjusted at the same time, the second driving motor 5-1 is started to drive the first transmission roller 5-3 to rotate in cooperation with the speed reducer 5-2, the first transmission roller 5-3 drives the third transmission roller 5-5 to rotate, the second transmission roller 5-4 located below is driven to rotate by the third transmission roller 5-5, and the lifting platform assembly 2 drives the extrusion barrel 3 and the two screw rods 4 to ascend and descend at the same time, and drives the two screw rods 4.

[0025] In the description of the application, unless otherwise clearly specified and limited, the terms "mounting", "connection", "connecting", "fixing" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0026] The standard parts used in the application can be purchased from the market, and the special-shaped parts can be ordered according to the description and the drawings. The specific connection mode of each part adopts the conventional means such as bolt, rivet and welding in the prior art. The machinery, parts and equipment adopt the conventional type in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, which will not be described in detail here.

[0027] Although the embodiments of the application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the application, and the scope of the application is defined by the appended claims and their equivalents.

Claims

1. A lifting adjustment mechanism of a twin-screw extruder, comprising a base (1), characterized in that: The base (1) is provided with a lifting platform assembly (2), the lifting platform assembly (2) is provided with an extrusion cylinder (3), the inside of the extrusion cylinder (3) is provided with two screw rods (4) which are parallel and rotatable, and the base (1) is provided with a drive assembly (5) which drives the rotation of the two screw rods (4) on one side of the lifting platform assembly (2). The drive assembly (5) comprises a second drive motor (5-1) arranged on the base (1), the drive end of the second drive motor (5-1) is provided with a speed reducer (5-2), the output end of the speed reducer (5-2) is provided with a first transmission roller (5-3), the shaft end of the two screw rods (4) is provided with a second transmission roller (5-4), the two second transmission rollers (5-4) are belt driven, the shaft end of the lower screw rod (4) is further provided with a third transmission roller (5-5), the base (1) is provided with an adjustable roller (5-6) which can move forward and backward, and the first transmission roller (5-3), the third transmission roller (5-5) and the adjustable roller (5-6) are belt driven.

2. A lift adjustment mechanism for a twin screw extruder as claimed in claim 1, wherein: The base (1) is provided with an adjusting assembly (6) for driving the adjustable roller (5-6) to move forward and backward; The adjusting assembly (6) comprises an electric cylinder (6-1) arranged on the base (1), the output end of the electric cylinder (6-1) is provided with a mounting seat (6-2), the adjustable roller (5-6) is rotatably mounted on the mounting seat (6-2), and the electric cylinder (6-1) is provided with a pressure sensor (6-3).

3. The lift adjustment mechanism of a twin screw extruder according to claim 1, wherein: The lifting platform assembly (2) comprises a mounting platform (2-1) arranged above the base (1) and used for mounting the extrusion cylinder (3), the base (1) is provided with a first drive motor (2-2), the drive end of the first drive motor (2-2) is provided with a bidirectional threaded rod (2-3), the bidirectional threaded rod (2-3) is provided with two sliders (2-4) in opposition, a plurality of pairs of X-shaped telescopic supports (2-5) are arranged between the mounting platform (2-1) and the base (1), the upper and lower ends of the X-shaped telescopic support (2-5) on the outer side are hingedly connected with the base (1) and the mounting platform (2-1) respectively, the bottom end of the X-shaped telescopic support (2-5) on the inner side is hingedly connected with the slider (2-4), and the top end of the X-shaped telescopic support (2-5) on the inner side is slidably connected with the bottom surface of the mounting platform (2-1).

4. A lift adjustment mechanism for a twin screw extruder as claimed in claim 3, wherein: The top end of the X-shaped telescopic support (2-5) on the inner side is provided with a contact roller (2-6).

5. The lift adjustment mechanism of a twin screw extruder according to claim 3, wherein: The base (1) is provided with a plurality of guide rods (2-7) which sequentially penetrate the two sliders (2-4).

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