Preparation process of cable insulation rubber particles

Abstract

The invention relates to the technical field of rubber particle processing, in particular to a cable insulation rubber particle preparation process. The process comprises the following steps: step 1, preparing a rubber powder raw material; secondly, rubber powder raw materials are guided into a plurality of forming channels in the side portion of the annular containing cylinder; thirdly, the annular containing cylinder is heated, and the rubber powder raw materials in the forming channel are subjected to compression forming treatment; fourthly, the rubber particles in the forming channel are pushed out and collected; the rubber powder raw materials are heated and extruded in the container, the rubber powder raw materials are subjected to re-shaping processing, generation of residual materials is reduced, and the utilization efficiency of the rubber raw materials is improved.

Description

Technical Field

[0001] This invention relates to the field of rubber granule processing technology, and more specifically, to a process for preparing cable insulation rubber granules. Background Technology

[0002] Cable materials can be classified into conductive materials, insulating materials, sheathing materials, shielding materials, and filling materials according to their application and function. Materials used for insulation are generally polypropylene, polyethylene, or polyvinyl chloride. Materials used as filling materials between conductors and insulation layers are generally ethylene-vinyl acetate copolymer.

[0003] A novel method for preparing environmentally friendly plastic track granules and an intelligent environmentally friendly preparation device are disclosed in patent application number CN202210244731.5. This patent document discloses a method for processing recycled rubber materials using a graded filtration and crushing system to improve the average particle size. Specifically, sheet material extruded into a plate shape is fed into the inlet and guided into an annular crushing trough. Two sets of movable rods, driven by the rotation of the crankshaft, intermittently move the crushing column up and down. The rotation of the crankshaft drives the bevel gear meshing structure to force the rotating column to rotate. The rotating column drives the gear to mesh with the external gear ring, forcing the external gear ring to drive the entire annular crushing trough to rotate under the limiting guidance of the annular slide groove. The sheet material fed into the annular crushing trough is crushed once by the impact of the two sets of crushing columns and the cooperation of the crushing teeth. However, the granule product prepared by the crushing method provided by this patent will inevitably produce excessively small rubber particles, thus generating a lot of residue. Summary of the Invention

[0004] In order to increase the utilization efficiency of rubber raw materials, the present invention adopts the following technical solution:

[0005] The purpose of this invention is to provide a method for heating and extruding rubber powder raw materials in a container, thereby reshaping the rubber powder raw materials, reducing the generation of residues, and increasing the utilization efficiency of rubber raw materials.

[0006] To achieve the above objectives, the present invention provides a process for preparing cable insulation rubber granules, comprising the following steps:

[0007] Step 1: Prepare rubber powder raw materials;

[0008] Step 2: The rubber powder raw material is introduced into multiple forming channels on the side of the annular container cylinder;

[0009] Step 3: Heat the annular container and compress the rubber powder material in the molding channel.

[0010] Step 4: Push out and collect the rubber granules in the molding channel.

[0011] The rubber powder raw materials used in this application are commercially available polypropylene, polyethylene, and polyvinyl chloride, which enable the resulting rubber granules to be used as cable insulation. Attached Figure Description

[0012] The following figures are intended only to illustrate and explain the present invention, wherein:

[0013] Figure 1 This is a flowchart of the process for preparing cable insulation rubber particles according to the present invention;

[0014] Figure 2 This is a schematic diagram of the production base, cylindrical hopper, and external gear ring of the present invention.

[0015] Figure 3 This is a schematic diagram of the structure of the multi-faceted wheel, cylindrical bin, feeding trough, and forming pressure column of the present invention;

[0016] Figure 4 This is a schematic diagram of the support column, end limiting seat, and multi-faceted wheel of the present invention;

[0017] Figure 5 This is a schematic diagram of the end limiting seat and heating column of the present invention;

[0018] Figure 6 This is a schematic diagram of the structure of the cam, annular receiving cylinder, and protrusion of the present invention;

[0019] Figure 7 This is a schematic diagram of the synchronous moving arm, positioning column, ejector cylinder, and clamping device of the present invention.

[0020] Figure 8 This is a schematic diagram of the structure of the multi-faceted wheel, synchronous moving arm, forming pressure column, and protruding column of the present invention.

[0021] In the diagram: 11 Production base; 12 Collection trough; 13 Support column; 14 End limit seat; 15 Cam; 16 Heating column; 17 Control handle; 18 Multi-faceted wheel; 21 Cylindrical bin; 22 Feeding trough; 23 Discharge channel; 24 Guide edge; 31 Annular receiving cylinder; 32 External gear ring; 41 Synchronous moving arm; 42 Forming pressure column; 43 Protruding column; 44 Positioning column; 45 Ejector cylinder; 46 Tightener. Detailed Implementation

[0022] To increase the utilization efficiency of rubber raw materials, this invention provides a process for preparing cable insulation rubber granules, comprising the following steps:

[0023] Step 1: Prepare rubber powder raw materials;

[0024] Step 2: The rubber powder raw material is introduced into multiple forming channels on the side of the annular container 31;

[0025] Step 3: Heat the annular container 31 and compress and mold the rubber powder material in the molding channel;

[0026] Step 4: Push out and collect the rubber granules in the molding channel.

[0027] The rubber powder raw materials used in this application are commercially available polypropylene, polyethylene, and polyvinyl chloride, which enable the resulting rubber granules to be used as cable insulation.

[0028] The following describes specific embodiments of the present invention.

[0029] Reference Figure 2-3 The following is an example illustrating the cable insulation rubber granule preparation process provided by the present invention, specifically the plastic shaping process of rubber powder raw materials:

[0030] The annular container 31 of this application is rotatably installed in the cylindrical hopper 21 on the upper side of the production base 11. The two ends of the cylindrical hopper 21 are respectively detachably fixedly installed with end limiting seats 14. The end limiting seats 14 are installed on the production base 11 through support columns 13. A forming pressure column 42 is slidably installed in the forming channel of the annular container 31. The upper and lower sides of the cylindrical hopper 21 are respectively provided with a feeding trough 22 and a discharge channel 23.

[0031] Rubber powder raw material is fed into the feeding trough 22. The rubber powder raw material flows along the horizontal direction of the feeding trough 22 and is guided into multiple forming channels on the side of the annular receiving cylinder 31. At this time, the forming pressure column 42 is contracted in the forming channel.

[0032] As the annular container 31 continues to rotate, the top of the molding channel filled with rubber powder material is blocked because the outer side of the annular container 31 abuts against the inner wall of the cylindrical chamber 21. The channel is filled with rubber powder material. At this time, the molding pressure column 42 is controlled to slide in the molding channel to squeeze the heated rubber powder material and reshape the rubber powder material.

[0033] Since the rubber powder material poured into the molding channel will not leak out during processing, no residue will be generated, thereby increasing the utilization efficiency of the rubber material.

[0034] Reference Figure 2 The following is an embodiment illustrating the cable insulation rubber granule preparation process provided by the present invention, specifically the control of the rotation of the annular receiving cylinder 31 within the cylindrical chamber 21:

[0035] An external gear ring 32 is fixedly installed on the outer side of the end limit seat 14 of this application, and a drive component for driving the external gear ring 32 to rotate is installed on the outer side of the cylindrical chamber 21.

[0036] The driving component is a geared motor I, which is installed on the outside of the cylindrical chamber 21. A drive gear is installed on the output shaft of the geared motor I, and the drive gear is connected to the external gear ring 32 through meshing transmission.

[0037] Start the geared motor I to drive the drive gear to rotate. Utilize the meshing transmission between the drive gear and the external gear ring 32 to achieve rotational control of the annular receiving cylinder 31 within the cylindrical chamber 21.

[0038] Reference Figure 2-3 and Figure 6-8 The illustration shows an embodiment of the cable insulation rubber granule preparation process provided by the present invention, in which the forming pressure column 42 automatically slides within the annular receiving cylinder 31 to extrude the heated rubber powder raw material:

[0039] The molding pressure column 42 of this application is provided in multiple ways. The multiple molding pressure columns 42 are evenly distributed in various directions on the side of the annular receiving cylinder 31. The multiple molding pressure columns 42 in the same direction are connected by a synchronous moving arm 41. A protruding column 43 is fixedly installed on the synchronous moving arm 41, and a cam 15 is installed on the end limiting seat 14. The end of the protruding column 43 abuts against and fits against the outer side of the cam 15.

[0040] The convex column 43 has a raised area on its side, so that during the rotation of the annular receiving cylinder 31, the forming pressure column 42 automatically slides inside the annular receiving cylinder 31 to extrude the heated rubber powder raw material, thereby increasing the automation efficiency of the equipment.

[0041] To ensure that the protrusion 43 can be stably attracted to the cam 15, magnet I and magnet II are respectively provided in the cam 15 and the protrusion 43, and magnet I and magnet II are connected by magnetic attraction coupling.

[0042] Furthermore, raised and recessed areas are provided on the side of the protruding post 43, so that the forming pressure post 42 can automatically slide back and forth in the annular receiving cylinder 31, thereby increasing the extrusion molding effect of the rubber particles of the forming pressure post 42.

[0043] Reference Figure 2-3 , Figure 6 and Figure 8 The following is an example illustrating the cable insulation rubber granule preparation process provided by the present invention, showing the process of discharging the processed rubber granules from the molding channel:

[0044] The lower side of the discharge channel 23 of this application is provided with a collection tank 12, which is fixedly connected to the production base 11.

[0045] Since the discharge channel 23 is open, during the continuous rotation of the annular container cylinder 31, when the molding channel containing rubber particles rotates to the discharge channel 23, it is affected by the low temperature air outside the discharge channel 23, which cools down the rubber particles in the molding channel so that they can be discharged smoothly.

[0046] Reference Figure 2-3 The following is an embodiment illustrating the cable insulation rubber granule preparation process provided by the present invention, which further increases the smoothness of rubber granule discharge within the molding channel:

[0047] The structure of the cylindrical silo 21 of this application is improved by providing multiple discharge channels 23 on one side of the cylindrical silo 21 and installing guide edges 24 on the outside of the multiple discharge channels 23 located on the side of the cylindrical silo 21, so that the lower end of the guide edges 24 extends towards the upper side of the middle of the collection tank 12.

[0048] The multiple discharge channels 23 can further increase the smoothness of the discharge of rubber particles in the molding channel.

[0049] Reference Figure 5 and Figure 8 The following is an example illustrating the cable insulation rubber granule preparation process provided by the present invention, wherein the heating column 16 is mounted on the end limiting seat 14 via the cam 15:

[0050] The end limiting seat 14 of this application is equipped with a plurality of heating columns 16, which extend into the inner region of the annular receiving cylinder 31; the heating columns 16 can be commercially available electric heating rods.

[0051] The heating column 16 can be mounted on the end limiting seat 14 via the cam 15, so that the heating column 16 does not need to pass through the cam 15 and then extend into the inner region of the annular receiving cylinder 31. At the same time, a gap is set between the cam 15 and the end limiting seat 14 to prevent the heat generated by the heating column 16 from being lost.

[0052] Reference Figure 4 and Figure 7-8 The following is an example illustrating the cable insulation rubber granule preparation process provided by the present invention, which applies an oscillating force to the molding pressure column 42 to increase the smooth discharge of rubber granules from the molding channel:

[0053] One end limit seat 14 is equipped with a multi-faceted wheel 18 via a control handle 17, and a toothed ejector is installed on the synchronous moving arm 41. The teeth at the end of the toothed ejector abut against the outer wall of the multi-faceted wheel 18.

[0054] Specifically: the main body of the toothed ejector arm is a positioning post 44, an ejector cylinder 45 is slidably installed on the outside of the positioning post 44, a clamping device 46 is installed between the ejector cylinder 45 and the positioning post 44, and a toothed protrusion is provided at the end of the ejector cylinder 45, which abuts against the outer wall of the multi-faceted wheel 18.

[0055] The main body of the clamping device 46 is spring I. Two rings are welded and fixedly connected to the two ends of spring I. The two rings are fixedly connected to the ejector cylinder 45 and the positioning post 44 respectively by fasteners.

[0056] Under the action of spring I, the ejector cylinder 45 always tends to move closer to the side of the multi-ribbed wheel 18, so that the toothed protrusion at the end of the ejector cylinder 45 can automatically push into the multiple ribs on the side of the multi-ribbed wheel 18. Thus, no matter where the molding pressure column 42 is in the molding channel, as long as the annular receiving cylinder 31 continues to rotate, the toothed protrusion at the end of the ejector cylinder 45 can interact with the multi-ribbed wheel 18, apply an oscillating force to the molding pressure column 42, and increase the smooth discharge of rubber particles in the molding channel.

[0057] Reference Figure 2 The following is an example illustrating the cable insulation rubber granule preparation process provided by the present invention, which increases the uniformity of rubber powder raw material filling in the feeding trough 22 and the discharge efficiency of rubber granules:

[0058] The structure of the support column 13 and the installation method of the control handle 17 in this application are improved. The support column 13 is vertically slidably installed on the column at the top of the production base 11. A spring II is installed between the column and the support column 13. The control handle 17 is rotatably installed on the corresponding end limit seat 14.

[0059] A geared motor II for driving the control handle 17 to rotate is installed on the end limit seat 14. When the geared motor II is started, the control handle 17 and the multi-faceted wheel 18 rotate together, so that the multi-faceted wheel 18 actively moves the toothed protrusions at the ends of the multiple ejector cylinders 45, increasing the vibration force on the molding pressure column 42 in the annular receiving cylinder 31, and driving the support column 13 to slide vertically on the column at the top of the production base 11, thereby making the cylindrical chamber 21 and the annular receiving cylinder 31 move vertically relative to the production base 11, increasing the uniformity of the filling of rubber powder raw material in the feeding trough 22 and the discharge efficiency of rubber particles.

Claims

1. A process for the preparation of cable insulation rubber particles, characterized in that, Includes the following steps: Step 1: Prepare rubber powder raw materials; Step 2: The rubber powder raw material is introduced into multiple forming channels on the side of the annular container (31); Step 3: Heat the annular container (31) and compress the rubber powder material in the molding channel; Step 4: Push out and collect the rubber granules in the molding channel.

2. The process for the preparation of cable insulation rubber particles according to claim 1, characterized in that: The annular container (31) is rotatably installed in the cylindrical hopper (21) on the upper side of the production base (11). A forming pressure column (42) is slidably installed in the forming channel of the annular container (31). A feeding trough (22) and a discharge channel (23) are respectively provided on the upper and lower sides of the cylindrical hopper (21).

3. The process for preparing cable insulation rubber particles according to claim 2, characterized in that: A collection trough (12) is provided on the lower side of the discharge channel (23), and the collection trough (12) is fixedly connected to the production base (11).

4. The cable insulation rubber granule preparation process according to claim 2, characterized in that: The cylindrical silo (21) is detachably and fixedly installed at both ends with end limiting seats (14), which are installed on the production base (11) via support columns (13).

5. The process for the preparation of cable insulation rubber particles according to claim 4, characterized in that: The end limiting seat (14) is equipped with a plurality of heating columns (16), which extend into the inner region of the annular receiving cylinder (31).

6. The process for the preparation of cable insulation rubber particles according to claim 4, characterized in that: Multiple forming pressure columns (42) are provided. Multiple forming pressure columns (42) in the same direction are connected by a synchronous moving arm (41). A protruding column (43) is fixedly installed on the synchronous moving arm (41), and a cam (15) is installed on the end limiting seat (14). The end of the protruding column (43) abuts against the outer side of the cam (15).

7. The process for the preparation of cable insulation rubber particles according to claim 6, characterized in that: Magnet I and magnet II are respectively provided in the cam (15) and the protrusion (43), and magnet I and magnet II are connected by magnetic adsorption coupling.

8. The process for preparing cable insulation rubber particles according to claim 2, characterized in that: An external gear ring (32) is fixedly installed on the outer side of the end limiting seat (14), and a driving component for driving the external gear ring (32) to rotate is installed on the outer side of the cylindrical chamber (21).

9. The process for the preparation of cable insulation rubber particles according to claim 6, characterized in that: One end limit seat (14) is equipped with a multi-faceted wheel (18) via a control handle (17), and a toothed ejector is installed on the synchronous moving arm (41), with the teeth at the end of the toothed ejector abutting against the outer wall of the multi-faceted wheel (18).

10. The process for preparing cable insulation rubber particles according to claim 9, characterized in that: The main body of the toothed ejector arm is a positioning column (44). An ejector cylinder (45) is slidably installed on the outside of the positioning column (44). A clamping device (46) is installed between the ejector cylinder (45) and the positioning column (44). The end of the ejector cylinder (45) is provided with a toothed protrusion, which abuts against the outer wall of the multi-faceted wheel (18).

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