Accurate pressure adjusting equipment for small spinning screw

Abstract

The utility model discloses a small-sized spinning screw accurate pressure regulating device, which relates to the technical field of spinning screws, and comprises an extruder and a spinning screw arranged in the extruder, the end part of the extruder is provided with an extrusion port, the outer side cover of the extrusion port is provided with a plurality of regulating baffle plates which are symmetrically arranged in a surrounding manner, and the regulating baffle plates are arranged in the extruder. Elastic rotating mechanisms are arranged in the multiple adjusting baffles, the multiple adjusting baffles are jointly sleeved with a connecting ring through the elastic rotating mechanisms, a connecting frame is fixedly arranged between the connecting ring and the bottom of the extruder, a pushing ring is arranged at the end of the extruder, and a plurality of pushing rods which are symmetrically arranged in a surrounding mode are fixedly arranged on the inner wall of the pushing ring; the push rod is in contact fit with the outer wall of the adjusting baffle. According to the utility model, in the operation process of the screw, the discharge caliber of the discharge port of the spinning screw equipment can be adjusted in real time under the condition that the constant feeding speed is ensured, so that the material flowing speed is stable, and the pressure of the screw equipment is accurately adjusted.

Description

TECHNICAL FIELD

[0001] The utility model relates to spinning screw technical field, concretely relates to a small -size spinning screw accurate pressure regulating equipment. BACKGROUND

[0002] The spinning screw needs to deliver the polymer melt from the hopper to the spinning assembly when working, and the flow speed and pressure distribution of the melt in the screw are crucial to the spinning process, at which time the flow speed of the melt and the discharge opening diameter of the screw equipment need to be accurately controlled by means of the pressure regulating assembly, and the existing pressure regulating method usually needs complex system configuration and fine adjustment operation, which is inconvenient to operate and prone to error, resulting in the subsequent spinning quality decline.

[0003] Therefore, we propose a small spinning screw accurate pressure regulating equipment to solve the above problems. UTILITY MODEL CONTENTS

[0004] In view of the above problems existing in the prior art small spinning screw accurate pressure regulating equipment, the utility model is proposed.

[0005] Therefore, the utility model aims at providing a small spinning screw accurate pressure regulating equipment, which solves the problem that the spinning screw pressure regulating equipment in the prior art cannot conveniently adjust the internal working pressure of the screw.

[0006] In order to achieve the above object, the utility model provides the following technical scheme:

[0007] A small spinning screw accurate pressure regulating equipment, comprising an extruder and a spinning screw arranged in the interior of the extruder, the end of the extruder is provided with an extrusion outlet, the outer side cover of the extrusion outlet is provided with a plurality of adjustment baffle plates arranged in a surrounding symmetry, the interiors of the plurality of adjustment baffle plates are each provided with an elastic rotating mechanism, and the elastic rotating mechanisms are collectively sleeved with a connecting ring; a connecting frame is fixedly arranged between the connecting ring and the bottom of the extruder;

[0008] The end of the extruder is provided with a push ring, the inner wall of the push ring is fixedly provided with a plurality of push rods arranged in a surrounding symmetry, the push rods are in contact with the outer wall of the adjustment baffle plate, and the outer wall of the extruder is provided with a push adjusting mechanism for driving the push ring to rotate;

[0009] The side of the extruder is fixedly provided with a pressure sensor, the detection end of the pressure sensor is arranged in the interior of the extruder, the outer wall of the extruder is fixedly provided with a mounting bracket, and the side of the mounting bracket is provided with a driving mechanism for driving the push adjusting mechanism to operate.

[0010] Preferably, the elastic rotating mechanism comprises a cross rod, the cross rod is rotationally arranged in the inside of the connecting ring, and the cross rod is fixedly connected with the adjusting baffle; a torsional spring is sleeved on the rod wall of the cross rod, and the two ends of the torsional spring are fixedly connected with the cross rod and the connecting ring respectively.

[0011] Preferably, the pushing adjusting mechanism comprises a transmission gear ring, the transmission gear ring is rotationally sleeved on the outer wall of the extruder, two symmetrical connecting rods are fixedly arranged between the transmission gear ring and the pushing ring, a driving rack is arranged on the outer wall of the transmission gear ring, and the driving rack is connected with the driving mechanism.

[0012] Preferably, the driving mechanism comprises a mounting cylinder, the mounting cylinder is fixedly arranged on the side wall of the mounting frame, a fixed electromagnetic block is fixedly arranged on the inner wall bottom of the mounting cylinder, a sliding electromagnetic block is slidably arranged in the inner wall of the mounting cylinder, a tension spring is fixedly arranged between the fixed electromagnetic block and the sliding electromagnetic block, a pushing column is fixedly arranged on the side wall of the sliding electromagnetic block, the pushing column is fixedly connected with the driving rack, a PLC controller is fixedly arranged on the outer wall of the mounting frame, and the PLC controller is electrically connected with the pressure sensor and the fixed electromagnetic block and the sliding electromagnetic block.

[0013] Further, the pressure sensor is a piezoresistive pressure sensor.

[0014] Preferably, the side of the pushing rod, which is contacted by the plurality of adjusting baffles, is arranged in an arc shape.

[0015] In the above technical solution, the technical effects and advantages of the utility model are provided.

[0016] 1. The utility model discloses a pressure sensor is used for real-time monitoring the pressure in the extruder, and the driving mechanism and the pushing adjusting mechanism are cooperated, the opening and closing degree of the adjusting baffle can be accurately controlled, the discharge port diameter can be accurately adjusted, the material flow speed is stabilized, the accurate adjustment of the spinning screw rod pressure is realized, and the spinning quality is improved.

[0017] 2. The utility model discloses a PLC controller is automatically controlled the on-off of the fixed electromagnetic block and the sliding electromagnetic block according to the data of the pressure sensor, realizes the automatic operation of the pushing adjusting mechanism, and the operation is convenient, and the artificial error is reduced. DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiment or the prior art of the present application, the drawings needed in the embodiment will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments described in the utility model, and other drawings can also be obtained according to these drawings for the ordinary skilled in the art.

[0019] Fig. 1 It is a structural schematic view of the utility model;

[0020] Fig. 2 It is the side structure schematic view of the adjusting baffle and the elastic rotating mechanism of the utility model;

[0021] Fig. 3 It is the inside structure schematic view of the installation cylinder of the utility model.

[0022] Mark explanation:

[0023] 1, extruder; 2, spinning screw; 3, adjusting baffle; 4, connecting ring; 5, connecting frame; 6, push ring; 7, push rod; 8, pressure sensor; 9, mounting bracket; 10, crossbar; 11, torsional spring; 12, transmission gear ring; 13, connecting rod; 14, driving rack; 15, installation cylinder; 16, fixed electromagnetic block; 17, sliding electromagnetic block; 18, tension spring; 19, push column; 20, PLC controller. Specific implementation

[0024] In order to make the technical personnel of the prior art better understand the technical scheme of the utility model, the utility model will be further introduced in detail below with the accompanying drawings.

[0025] The utility model discloses a small spinning screw accurate pressure regulating equipment.

[0026] Embodiment 1

[0027] The utility model provides a small spinning screw accurate pressure regulating equipment as Figs. 1-3 It includes extruder 1 and the spinning screw 2 in the inside of extruder 1, and the end of extruder 1 is equipped with the extrusion outlet, and the outside cover of extrusion outlet is equipped with multiple adjusting baffles 3 that are symmetrically arranged, and the inside of multiple adjusting baffles 3 is equipped with the elastic rotating mechanism, and the connecting ring 4 is commonly set by the elastic rotating mechanism, and the elastic rotating mechanism includes crossbar 10, and crossbar 10 is rotatably arranged in the inside of connecting ring 4 and is fixedly connected with adjusting baffle 3, and the rod wall of crossbar 10 is equipped with torsional spring 11, and the both ends of torsional spring 11 are fixedly connected with crossbar 10 and connecting ring 4 respectively, and connecting ring 4 and the bottom of extruder 1 are fixedly equipped with connecting frame 5.

[0028] The end of extruder 1 is equipped with push ring 6, and the inner wall of push ring 6 is fixedly equipped with multiple push rods 7 that are symmetrically arranged, and push rod 7 is in contact with the outer wall of adjusting baffle 3, and the side of multiple adjusting baffles 3 that is in contact with push rod 7 is arranged in arc shape, and the outer wall of extruder 1 is equipped with push adjusting mechanism for driving push ring 6 to rotate.

[0029] The side of extruder 1 is fixedly equipped with pressure sensor 8, and the detection end of pressure sensor 8 is arranged in the inside of extruder 1, and the outer wall of extruder 1 is fixedly equipped with mounting bracket 9, and the side of mounting bracket 9 is equipped with driving mechanism for driving push adjusting mechanism to operate.

[0030] When the spinning screw 2 is working, the pressure sensor 8 monitors the pressure inside the extruder 1 in real time. When the pressure is within the normal range, the adjusting baffle 3 is kept in a certain position under the action of the torsion spring 11, and the discharge port diameter is kept stable. Once the pressure sensor 8 detects a change in pressure, the signal will be transmitted to the subsequent control components. The control logic is described in detail in Example 2.

[0031] At this time, the push adjustment mechanism will drive the push ring 6 to rotate according to the control signal. When the push ring 6 rotates, the push rod 7 on its inner wall will contact the outer wall of the adjustment baffle 3 and push the adjustment baffle 3 to rotate around the cross bar 10. Since the side of the adjustment baffle 3 that contacts the push rod 7 is arc-shaped, the pushing process is more stable and smooth. The rotation of the adjustment baffle 3 will change the discharge port diameter of the extrusion port, thereby adjusting the outflow speed of the material and realizing the initial adjustment of the spinning screw pressure.

[0032] During the adjustment process, the torsion spring 11 provides a certain restoring force to the adjusting baffle 3, so that it can automatically adjust back to the appropriate position when the pressure change is small. On the other hand, when the push rod 7 pushes the adjusting baffle 3 to rotate, the torsion spring 11 undergoes elastic deformation, which plays a buffering role, preventing the adjusting baffle 3 from rotating excessively and ensuring the accuracy of the adjustment.

[0033] Example 2

[0034] Example 2, based on Example 1, aims to provide stable driving for the adjustment mechanism, such as... Figs. 1-3 As shown, the push adjustment mechanism includes a transmission gear ring 12, which is rotatably sleeved on the outer wall of the extruder 1, and two symmetrically arranged connecting rods 13 are fixed between it and the push ring 6. A drive rack 14 is fitted on the outer wall of the transmission gear ring 12, and the drive rack 14 is connected to the drive mechanism. The drive mechanism includes a mounting cylinder 15, which is fixed on the side wall of the mounting frame 9, and a fixed electromagnetic block 16 is fixed on the bottom of its inner wall. A sliding electromagnetic block 17 slides through the inner wall of the mounting cylinder 15, and a tension spring 18 is fixed between the sliding electromagnetic block 17 and the fixed electromagnetic block 16. A push column 19 is fixed on the side wall of the sliding electromagnetic block 17, and the push column 19 is fixedly connected to the drive rack 14. A PLC controller 20 is fixed on the outer wall of the mounting frame 9. The PLC controller 20 is electrically connected to the pressure sensor 8, the fixed electromagnetic block 16, and the sliding electromagnetic block 17. The pressure sensor 8 is a piezoresistive pressure sensor.

[0035] When the pressure sensor 8 detects the pressure change inside the extruder 1, the pressure signal is transmitted to the PLC controller 20, and the PLC controller 20 controls the on-off of the fixed electromagnetic block 16 and the sliding electromagnetic block 17 according to the preset pressure threshold and the current pressure value, when the pressure is too large, the pressure sensor 8 detects the pressure increase and makes its internal resistance value, so that the internal current of the fixed electromagnetic block 16 and the sliding electromagnetic block 17 in the same loop is reduced, so that the magnetic force between the fixed electromagnetic block 16 and the sliding electromagnetic block 17 is weakened, at this time, under the pull of the tension spring 18, the sliding electromagnetic block 17 approaches the fixed electromagnetic block 16 and drives the driving rack 14 to move down, at this time, under the cooperation of the driving rack 14 and the transmission gear 13, the transmission gear 13 drives the push ring 6 to move and makes the push rod 7 away from the adjusting baffle 3, at this time, under the torsional force recovery of the torsional spring 11, the plurality of adjusting baffles 3 are away from each other to increase the discharge port diameter, release the internal pressure of the screw device, ensure the stable discharge, when the pressure sensor 8 detects the pressure decrease, the internal resistance value is reduced, the loop current is increased, at this time, the sliding electromagnetic block 17 and the fixed electromagnetic block 16 are away from each other and make the driving rack 14 and the transmission gear 13 reverse meshing, so that the push rod 7 pushes the adjusting baffle 3 to make the discharge port diameter decrease, so as to reduce the material flow rate and increase the internal pressure of the device.

[0036] The above only describes some exemplary embodiments of the utility model in a descriptive manner, without doubt, for ordinary skilled in the art, under the condition that the spirit and scope of the utility model are not deviated, the described embodiments can be modified in various different ways. Therefore, the above drawings and description are illustrative in nature and should not be understood as limiting the scope of protection of the utility model claims.

Claims

1. A small spinning screw precise pressure regulating device, comprising an extruder (1) and a spinning screw (2) arranged inside the extruder (1), characterized in that, The end of the extruder (1) is provided with an extrusion port, the outer side cover of the extrusion port is provided with a plurality of adjustment baffles (3) arranged in a circumferential symmetry, the inside of each of the plurality of adjustment baffles (3) is provided with an elastic rotating mechanism, and the plurality of adjustment baffles (3) are jointly sleeved with a connecting ring (4) through the elastic rotating mechanism, and the connecting ring (4) is fixedly connected with the bottom of the extruder (1) through a connecting frame (5). The end of the extruder (1) is provided with a pushing ring (6), the inner wall of the pushing ring (6) is fixedly provided with a plurality of pushing rods (7) arranged in a circumferential symmetry, the pushing rods (7) are in contact with the outer wall of the adjustment baffle (3), and the outer wall of the extruder (1) is provided with a pushing adjustment mechanism for driving the pushing ring (6) to rotate. The side of the extruder (1) is fixedly provided with a pressure sensor (8), the detection end of the pressure sensor (8) is arranged in the inside of the extruder (1), the outer wall of the extruder (1) is fixedly provided with a mounting frame (9), and the side of the mounting frame (9) is provided with a driving mechanism for driving the pushing adjustment mechanism to operate.

2. The compact spin-screw precise pressure regulating device according to claim 1, characterized in that, The elastic rotating mechanism comprises a cross rod (10), the cross rod (10) is rotatably arranged in the inside of the connecting ring (4) and fixedly connected with the adjustment baffle (3), the rod wall of the cross rod (10) is sleeved with a torsional spring (11), and the two ends of the torsional spring (11) are fixedly connected with the cross rod (10) and the connecting ring (4) respectively.

3. The compact spin-screw precise pressure regulation apparatus according to claim 1, characterized by, The pushing adjustment mechanism comprises a transmission gear ring (12), the transmission gear ring (12) is rotatably sleeved with the outer wall of the extruder (1) and fixedly connected with the pushing ring (6) through two symmetrically arranged connecting rods (13), the outer wall of the transmission gear ring (12) is matched with a driving rack (14), and the driving rack (14) is connected with the driving mechanism.

4. The compact spin screw precise pressure regulation apparatus of claim 1, wherein, The driving mechanism comprises a mounting cylinder (15), the mounting cylinder (15) is fixedly arranged on the side wall of the mounting frame (9), fixedly arranged on the inner wall bottom is a fixed electromagnetic block (16), a sliding electromagnetic block (17) is slidably arranged in the inner wall of the mounting cylinder (15), a tension spring (18) is fixedly arranged between the sliding electromagnetic block (17) and the fixed electromagnetic block (16), a pushing column (19) is fixedly arranged on the side wall of the sliding electromagnetic block (17), the pushing column (19) is fixedly connected with the driving rack (14), a PLC controller (20) is fixedly arranged on the outer wall of the mounting frame (9), and the PLC controller (20) is electrically connected with the pressure sensor (8) and the fixed electromagnetic block (16) and the sliding electromagnetic block (17).

5. The compact spin screw precise pressure regulation apparatus of claim 1, wherein, The pressure sensor (8) is a piezoresistive pressure sensor.

6. The compact spin screw precise pressure regulation apparatus of claim 1, wherein, One side of the plurality of adjustment baffles (3) in contact with the pushing rod (7) is arranged in an arc shape.

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