Extruder traction mechanism

Abstract

The utility model relates to the technical field of extruders, in particular to an extruder traction mechanism, which is arranged between a water cooling box and a granulator and comprises two belt wheel traction components distributed up and down, the upper belt wheel traction mechanism is defined as a first belt wheel traction mechanism, and the lower belt wheel traction mechanism is defined as a second belt wheel traction mechanism. The belt wheel traction assembly comprises at least two rotating rollers, an annular belt is connected between the two rotating rollers located at the two ends, at least one rotating roller is in transmission connection with a rotating motor, and during traction, the extrusion strip is clamped between the lower belt portion of the annular belt of the first belt wheel traction mechanism and the upper belt portion of the annular belt of the second belt wheel traction mechanism. According to the device, the contact area with an extruded strip is greatly increased through the annular belt, and the problems of pull-apart and traction slip of the plastic strip are effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of extruders, in particular to a traction mechanism of an extruder. Background Art

[0002] After the recycled plastic raw materials are crushed by mechanical blades, they are heated and melted. The melted raw materials are then extruded into plastic strips by an extruder. After cooling, they are finally towed by an external traction mechanism and then evenly cut into granules.

[0003] refer to Figure 1 The existing traction mechanism directly performs traction through two traction rollers, one active roller and one passive roller. The cooled plastic strip is clamped between the active roller and the passive roller. The contact area between the roller body and the plastic strip of this traction mechanism is relatively small. On the one hand, the problem of plastic strip being torn off is prone to occur, and on the other hand, the problem of traction slipping is prone to occur. Utility Model Content

[0004] The utility model aims to solve the shortcomings of the prior art plastic strip traction mechanism, namely, the problem of easy plastic strip tearing and the problem of traction slipping, and proposes an extruder traction mechanism.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A traction mechanism for an extruder is arranged between a water cooling box and a pelletizer. The traction mechanism includes two pulley traction assemblies distributed upper and lower, the upper one is defined as a first pulley traction mechanism and the lower one is a second pulley traction mechanism. The pulley traction assembly includes at least two rotating rollers, an endless belt is connected between the two rotating rollers at both ends, at least one of the rotating rollers is connected to a rotating motor for transmission. During traction, the extrusion strip is clamped between the lower belt portion of the endless belt of the first pulley traction mechanism and the upper belt portion of the endless belt of the second pulley traction mechanism.

[0007] A pressure component is provided above the lower belt portion of the annular belt of the first pulley traction mechanism, and a pressure plate is provided below the upper belt portion of the annular belt of the second pulley traction mechanism.

[0008] The pressure assembly includes a frame fixed to the position of the pulley traction assembly, a support frame is provided at the bottom of the frame, a thrust spring is connected between the frame and the support frame, and a plurality of parallel and spaced pressure rollers are rotatably connected to the support frame. The axial direction of the pressure roller is arranged along the width direction of the annular belt, and the pressure roller elastically presses against the top surface of the lower belt portion of the annular belt of the first pulley traction mechanism.

[0009] The traction mechanism also includes a water vapor removal component fixed to the ground, and the water vapor removal component includes a plurality of first pipes and a plurality of second pipes, the first pipes and the second pipes are alternately distributed, the first pipes and the second pipes are located between the lower belt portion of the annular belt of the first pulley traction mechanism and the upper belt portion of the annular belt of the second pulley traction mechanism, during traction, the extrusion strip is located between adjacent first pipes and second pipes, the height of the first pipe and the second pipe is less than the diameter of the extrusion strip, through holes are opened on the circumference of the first pipe and the second pipe, the first pipe is connected to and installed with a blowing device, and / or the second pipe is connected to and installed with a suction device.

[0010] String flow slots are arranged at intervals on the circumference of the endless belt, and the string flow slots are arranged along the width direction of the endless belt.

[0011] The utility model provides an extruder traction mechanism, which has the beneficial effect of greatly increasing the contact area with the extruded strip through the endless belt, and effectively reducing the problems of plastic strip tearing and traction slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the existing traction mechanism;

[0013] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model;

[0014] Figure 3 This is a schematic diagram of the main structure of the utility model;

[0015] Figure 4 This is a schematic diagram of the cross-sectional structure of the utility model along the radial direction of the extrusion strip.

[0016] In the figure: water vapor removal component 1, first pipeline 2, second pipeline 3, first pulley traction mechanism 4, second pulley traction mechanism 5, rotating roller 6, endless belt 7, pressure component 9, pressure plate 10, frame 11, thrust spring 12, pressure roller 13, series flow gap 14, extrusion strip 15. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] Refer to the figure Figure 2-Figure 4A traction mechanism for an extruder is provided between a water cooling box and a pelletizer. The traction mechanism comprises two pulley traction assemblies distributed upper and lower, the upper one being defined as a first pulley traction mechanism 4 and the lower one as a second pulley traction mechanism 5. The pulley traction assembly comprises at least two rotating rollers 6. An endless belt 7 is connected between the two rotating rollers 6 at both ends. At least one rotating roller 6 is connected to a rotating motor for transmission. During traction, the extrusion strip 15 is clamped between the lower belt portion of the endless belt 7 of the first pulley traction mechanism 4 and the upper belt portion of the endless belt 7 of the second pulley traction mechanism 5.

[0019] When the device is pulling, the extruded strip 15 passes through the first pulley traction mechanism 4 and the second pulley traction mechanism 5, and the rotating motor drives one of the pulley traction components to rotate, so that the endless belt 7 rotates, and the extruded strip 15 is pulled from the water cooling box to the pelletizer station through the upper and lower endless belts 7. The device greatly increases the contact area with the extruded strip 15 through the endless belt 7, effectively reducing the problems of plastic strip tearing and traction slipping.

[0020] In order to improve the clamping force, a pressure component 9 is provided above the lower belt portion of the annular belt 7 of the first pulley traction mechanism 4, and a pressure plate 10 is provided below the upper belt portion of the annular belt 7 of the second pulley traction mechanism 5. The pressure component 9 is used to apply downward pressure to the lower belt portion of the annular belt 7 of the first pulley traction mechanism 4, and the pressure of the upper belt portion of the annular belt 7 of the second pulley traction mechanism 5 is borne by the pressure plate 10, so that the extruded strip is better clamped.

[0021] For further reference, Figure 3 The pressure assembly 9 includes a frame 11 fixed to the position of the pulley traction assembly, a support frame is provided at the bottom of the frame 11, a thrust spring 12 is connected between the frame 11 and the support frame, and a number of parallel pressure rollers 13 arranged at intervals are rotatably connected to the support frame. The axial direction of the pressure roller 13 is arranged along the width direction of the endless belt 7. The pressure roller 13 elastically rests against the top surface of the lower belt portion of the endless belt 7 of the first pulley traction mechanism 4, and the thrust spring 12 applies a downward elastic thrust to the support frame, so that the pressure roller 13 on the support frame can better squeeze the lower belt portion of the endless belt 7 of the first pulley traction mechanism 4.

[0022] In order to reduce the moisture of the extruded strip, refer to Figure 2 、 Figure 4The traction mechanism also includes a water vapor removal component 1 fixed to the ground. The water vapor removal component 1 includes a plurality of first pipes 2 and a plurality of second pipes 3. The first pipes 2 and the second pipes 3 are alternately distributed. The first pipes 2 and the second pipes 3 are located between the lower belt portion of the endless belt 7 of the first pulley traction mechanism 4 and the upper belt portion of the endless belt 7 of the second pulley traction mechanism 5. During traction, the extrusion strip 15 is located between the adjacent first pipes 2 and the second pipes 3. The heights of the first pipes 2 and the second pipes 3 are less than the diameter of the extrusion strip 15. Through holes are provided on the circumferences of the first pipes 2 and the second pipes 3. The first pipe 2 is connected to and installed with a blowing device, and / or the second pipe 3 is connected to and installed with an air suction device. In order to facilitate the flow of water vapor following the airflow, the circumference of the endless belt 7 is provided with interval-distributed string flow slots 14, and the string flow slots 14 are arranged along the width direction of the endless belt 7.

[0023] The first pipe 2 is made to generate airflow that diverges in all directions through the blowing device, and / or the second pipe 3 is made to generate airflow that inhales in all directions through the suction device. When the airflow passes through the extruded strip 15, the water vapor on it is carried away and discharged through the second pipe 3.

[0024] As an implementation method, the blowing equipment can be an air pump, and the suction equipment can be a vacuum pump. A water vapor drying box is set at the air inlet end of the vacuum pump to prevent water vapor from entering the interior of the vacuum pump. Of course, in order to improve the drying effect, a resistance wire for heating the air flow can be set at the air outlet end of the blowing pump. The above structure can be selected according to actual working conditions.

[0025] The above is only a preferred specific implementation method of the present invention, but the scope of protection of the present invention is not limited to this. Any technical solution, conception, and design obtained by equivalent replacement or modification of the technical solution and utility model concept of the present invention by any technical personnel familiar with the technical field within the technical scope disclosed by the present invention should be covered by the scope of protection of the present invention.

Claims

1. An extruder traction mechanism, the traction mechanism is arranged between the water cooling box and the pelletizer, characterized in that: The traction mechanism comprises two upper and lower pulley traction assemblies, the upper one being defined as a first pulley traction mechanism (4) and the lower one as a second pulley traction mechanism (5), the pulley traction assembly comprising at least two rotating rollers (6), an annular belt (7) being connected between the two rotating rollers (6) at both ends, at least one of the rotating rollers (6) being connected to a rotating motor in a transmission manner, and during traction, an extrusion strip (15) is sandwiched between the lower belt portion of the annular belt (7) of the first pulley traction mechanism (4) and the upper belt portion of the annular belt (7) of the second pulley traction mechanism (5).

2. The extruder traction mechanism according to claim 1, characterized in that: A pressure component (9) is provided above the lower belt portion of the annular belt (7) of the first pulley traction mechanism (4), and a pressure plate (10) is provided below the upper belt portion of the annular belt (7) of the second pulley traction mechanism (5).

3. The extruder traction mechanism according to claim 2, characterized in that: The pressure assembly (9) comprises a frame (11) fixed to the position of the pulley traction assembly, a support frame is provided at the bottom of the frame (11), a thrust spring (12) is connected between the frame (11) and the support frame, and a plurality of parallel pressure rollers (13) are rotatably connected to the support frame. The axial direction of the pressure roller (13) is arranged along the width direction of the annular belt (7), and the pressure roller (13) elastically abuts against the top surface of the lower belt portion of the annular belt (7) of the first pulley traction mechanism (4).

4. An extruder traction mechanism according to any one of claims 1 to 3, characterized in that: The traction mechanism further comprises a water vapor removal assembly (1) fixedly arranged on the ground, the water vapor removal assembly (1) comprising a plurality of first pipes (2) and a plurality of second pipes (3), the first pipes (2) and the second pipes (3) being alternately distributed, the first pipes (2) and the second pipes (3) being located between the lower belt portion of the annular belt (7) of the first pulley traction mechanism (4) and the upper belt portion of the annular belt (7) of the second pulley traction mechanism (5), during traction, the extrusion strip (15) is located between adjacent first pipes (2) and second pipes (3), the height of the first pipe (2) and the second pipe (3) being less than the diameter of the extrusion strip (15), the circumference of the first pipe (2) and the second pipe (3) being provided with through holes, the first pipe (2) being connected to and installed with a blowing device, and / or the second pipe (3) being connected to and installed with a suction device.

5. The extruder traction mechanism according to claim 4, characterized in that: The circumferential side of the annular belt (7) is provided with intermittently distributed serial flow slots (14), and the serial flow slots (14) are arranged along the width direction of the annular belt (7).

Images