Screw dismounting and mounting device for plastic extruder

Abstract

A plastic extruder screw dismounting device relates to the technical field of plastic extruder screws and comprises a bottom frame, carrier rollers, a screw fastening support, a pressing plate, a fastening bolt, a sliding plate, a rack, a sliding rail, a motor, a gear, a motor support and a limiting block. According to the utility model, the screw rod can be conveniently disassembled and assembled, and during operation, the screw rod can be pulled or assembled by pressing the screw rod, starting the motor, controlling the positive and negative rotation of the motor and driving the sliding plate to move rightwards or leftwards by using the pressing plate and the elastic cushion through the fastening bolt, so that the working efficiency is greatly improved compared with a manual shoulder-carrying and hand-lifting mode; the air blowing nozzle and the protective cover are arranged, high-pressure air flow is used for blowing, residual polymers on the surface of the screw can be removed, the protective cover is arranged to prevent the residual polymers blown out by the high-pressure air flow from hurting people, and the personal safety of workers is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic extruder screw, especially a plastic extruder screw dismounting device BACKGROUND

[0002] The extruder is important equipment in the plastic industry, especially in the field of thermoplastic polymer material modification, various special function polymer materials can be prepared through the extruder. The mixing and extrusion of materials are realized by the screw inside the extruder.

[0003] When the screw needs to be repaired or damaged, it needs to be taken out from the inside of the extruder. One is to dismount the barrel from the extruder, and then take out the screw. This method belongs to large dismounting, and the labor intensity is large, and the efficiency is low. In some cases, such as adjusting the screw structure, cleaning the screw, etc., the equipment does not need to be dismounted, and the screw can be pulled out from the end of the head. This method is simple and fast, the labor intensity is small, and the dismounting efficiency is high. However, there are many problems in pulling out the screw from the head. First, the pulling out process is not convenient. Since the polymer is in a molten state at high temperature, it will harden and bond the screw and the barrel together once it cools down, which cannot be taken out. Therefore, the screw needs to be dismounted at a certain high temperature. At this time, the screw and the unhardened polymer material are in a high temperature state, which increases the difficulty of the screw dismounting operation. Second, the high temperature polymer needs to be cleaned in time, otherwise it will harden during the pulling out process, which increases the difficulty of the later cleaning. On the other hand, when assembling the screw on the extruder, since the length of the screw can reach more than 2 meters, the assembly operation is carried out simply by manual shoulder carrying and hand lifting, which is low in efficiency and easy to cause danger.

[0004] Therefore, the industry needs a plastic extruder screw dismounting device that can solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model provides a plastic extruder screw dismounting device for solving the problem of difficult screw dismounting.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] The utility model discloses a plastic extruder screw rod dismounting device, including chassis, carrier roller, screw rod fastening support, pressing plate, fastening bolt, sliding plate, rack, slide rail, motor, gear, motor support, limit block, the carrier roller is installed on the chassis through the support, is located the below of screw rod, and the screw rod is supported, the slide rail is fixed on the chassis, the sliding plate is installed on the slide rail, and moves along the left and right of slide rail, the screw rod fastening support is installed on the sliding plate, and the screw rod is fastened together with the screw rod fastening support using pressing plate and fastening bolt during the dismounting operation, and the rack is installed below the sliding plate, the motor is installed on the chassis through the motor support, and the gear is installed on the motor, and the gear is engaged with the rack, and the limit block is installed on the chassis, and the limit block is equipped with the roller, and the roller is contacted with the upper surface of sliding plate.

[0008] The plastic extruder screw rod dismounting device has a protective cover installed on the right side of the chassis.

[0009] The plastic extruder screw rod dismounting device has a blowing nozzle arranged inside the protective cover, and a blowing port of the blowing nozzle is arranged above the side of the screw rod.

[0010] The plastic extruder screw rod dismounting device has an elastic pad arranged below the pressing plate during the dismounting operation.

[0011] The utility model has the advantages of the following:

[0012] The utility model can conveniently dismount and install the screw rod, and the head end of the screw rod is pressed tightly by the pressing plate and the elastic pad through the fastening bolt during the operation, the motor is started, the forward and reverse rotation of the motor is controlled, the sliding plate is driven to move rightward or leftward, the screw rod can be pulled out or installed, compared with the manual shoulder carrying and hand lifting mode, the working efficiency is greatly improved; the blowing nozzle and the protective cover are arranged, the residual polymer on the surface of the screw rod can be removed by using high-pressure airflow sweeping, the residual polymer blown by the high-pressure airflow is prevented from hurting people, and the personal safety of the workers is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The utility model does not show the structure diagram of the limit block;

[0014] Figure 2 The utility model is the right view;

[0015] The numbers in the drawing respectively represent: 1, chassis, 2, protective cover, 3, carrier roller, 4, screw rod, 5, blowing nozzle, 6, screw rod fastening support, 7, pressing plate, 8, fastening bolt, 9, sliding plate, 10, rack, 11, slide rail, 12, motor, 13, gear, 14, motor support, 15, limit block, 16, elastic pad. DETAILED DESCRIPTION

[0016] The utility model discloses a plastic extruder screw dismounting device, as shown in the drawing, install slide rail 11 on the chassis 1, set up the sliding plate 9 on the slide rail 11, the sliding plate 9 moves along the left and right of slide rail 11, install the rack 10 below the sliding plate 9. Figure 1 Motor 12 is installed on motor support 14, motor 12 is connected speed reducer, and gear 13 is installed on the output shaft of speed reducer, and gear 13 is engaged with rack 10 to drive.

[0017] Screw fastening support 6 is set up on the sliding plate 9, and the left end of screw 4 is pressed tightly using pressing plate 7 and fastening bolt 8, and the right end of chassis 1 is provided with idler 3 for supporting screw 4.

[0018] Limiting block 15 is used for limiting the sliding plate 9.

[0019] The utility model discloses a plastic extruder screw dismounting device, set up blowing nozzle 5 on the frame 1, use high pressure airflow to sweep the residual polymer on the screw, prevent the solidification of polymer after temperature reduction, facilitate the subsequent dismounting work.

[0020] The utility model discloses a plastic extruder screw dismounting device, set up the protective cover 2, and the purpose is to shield the residue splashing when water sweeps high temperature polymer.

[0021] The utility model discloses a plastic extruder screw dismounting device, set up the protective cover 2, and the purpose is to shield the residue splashing when water sweeps high temperature polymer.

[0022] When using the utility model, the head end of the screw is pressed tightly by fastening bolt using pressing plate and elastic pad, the motor is started, the forward and reverse rotation of the motor is controlled, the sliding plate is driven to move right or left, and the screw can be pulled out or installed.

Claims

1. A plastic extruder screw dismounting device, characterized by: It includes the chassis (1), the carrier roller (3), the screw fastening support (6), the pressing plate (7), the fastening bolt (8), the sliding plate (9), the rack (10), the slide rail (11), the motor (12), the gear (13), the motor support (14), the limiting block (15), the carrier roller (3) is installed on the chassis (1) through the support, is located below the screw (4), supports the screw (4), the slide rail (11) is fixed on the chassis (1), the sliding plate (9) is installed on the slide rail (11), and moves left and right along the slide rail (11), the screw fastening support (6) is installed on the sliding plate (9), the screw (4) is fastened together with the screw fastening support (6) using the pressing plate (7) and the fastening bolt (8) during dismounting operation, the rack (10) is installed below the sliding plate (9), the motor (12) is installed on the chassis (1) through the motor support (14), the gear (13) is installed on the motor (12), the gear (13) is engaged with the rack (10), the limiting block (15) is installed on the chassis (1), the limiting block (15) is provided with a roller, and the roller is in contact with the upper surface of the sliding plate (9).

2. A plastic extruder screw dismounting device according to claim 1, characterized in that: The protective cover (2) is installed on the right side of the chassis (1).

3. A plastic extruder screw dismounting device according to claim 1, characterized in that: The air blowing nozzle (5) is arranged in the protective cover (2), the air blowing port of the air blowing nozzle (5) is located above the side of the screw (4), and the air blowing nozzle (5) is installed on the chassis (1).

4. A plastic extruder screw dismounting device according to claim 1, characterized in that: The elastic pad (16) is arranged below the pressing plate (7) during dismounting operation.

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