Crosslinked cable insulation layer extrusion molding device

Abstract

The utility model relates to the technical field of extrusion molding devices, in particular to a cross-linked cable insulation layer extrusion molding device, which is characterized in that raw materials enter a feed hopper through a feed pipe, and a stirring and preheating assembly is started, so that the raw materials in the feed hopper are stirred and preheated; the raw materials in the feeding hopper are preheated while blockage of the raw materials in the feeding hopper is reduced, the preheated raw materials enter the shell and are heated through the heating sleeve to be molten, the extrusion assembly is started, and therefore the molten raw materials in the shell are discharged through the output end of the shell and wrap the outer side of the cable; comprising a shell, a heating sleeve, a feeding hopper and a feeding pipe, the heating sleeve is arranged on the outer side of the shell in a sleeving mode, the feeding hopper is arranged at the top end of the shell, the feeding pipe is arranged at the top end of the feeding hopper, the extrusion assembly is arranged on the shell, the stirring preheating assembly is arranged on the feeding hopper, and an air outlet hole is formed in the top end of the feeding hopper.

Description

Technical Field

[0001] The utility model relates to the technical field of extrusion devices, in particular to an extrusion device for a cross-linked cable insulating layer. Background Art

[0002] The service life of wires and cables is directly related to the quality of their insulating layers. The insulating layer of wires and cables is formed by a plastic injection machine cooperating with an extrusion device to melt solid plastic and wrap it on the outer surface of the wires and cables to form an insulating protective layer.

[0003] In the prior art, a patent document with the publication number of CN210061920U discloses an extrusion device for processing a cable insulating layer, which includes a melting tank. Openings are provided at the top, left and right sides of the melting tank, and a screening cylinder is fixedly installed in the top opening of the melting tank. A filter screen is fixedly installed between the inner walls of the screening cylinder. The top of the screening cylinder is communicated with a feed hopper. A support plate is fixedly installed on the left side surface of the melting tank, and a motor is fixedly installed on the top of the support plate. The output end of the motor is fixedly installed with a rotating shaft. The end of the rotating shaft away from the motor penetrates the left side wall of the melting tank and is fixedly connected with a rotating rod. A spiral blade is arranged on the outer surface of the rotating rod. A heat conducting plate is fixedly installed between the inner walls of the melting tank, and a heating coil is fixedly installed on the lower surface of the heat conducting plate. A forming device is fixedly sleeved at the right opening of the melting tank, and a cooling tank is fixedly installed on the right side of the forming device.

[0004] During the use process, it is found that when the raw materials are transported from the feed hopper to the melting tank, the raw materials are prone to bridging and blocking. If the raw materials are blocked, the processing efficiency will be affected. Summary of the Utility Model

[0005] To solve the above technical problems, the utility model provides an extrusion device for a cross-linked cable insulating layer that improves the extrusion efficiency.

[0006] An extrusion device for a cross-linked cable insulating layer of the utility model includes a housing, a heating sleeve, a feed hopper and a feed pipe. The heating sleeve is sleeved outside the housing. The feed hopper is arranged at the top of the housing. The feed pipe is arranged at the top of the feed hopper. The extrusion device further includes an extrusion assembly and a stirring and preheating assembly. The extrusion assembly is arranged on the housing, and the stirring and preheating assembly is arranged on the feed hopper. An air outlet hole is arranged at the top of the feed hopper. The raw materials enter the interior of the feed hopper through the feed pipe. The stirring and preheating assembly is started to stir and preheat the raw materials in the feed hopper, reducing the blockage of the raw materials in the feed hopper and preheating the raw materials in the feed hopper at the same time. The preheated raw materials enter the interior of the housing and are heated and melted by the heating sleeve. The extrusion assembly is started, so that the molten raw materials in the housing are discharged outside through the output end of the housing and wrapped around the outer side of the cable.

[0007] Preferably, the extrusion assembly includes a support plate, a first motor, a first rotating shaft, and a first spiral blade. A support plate is provided at the left end of the housing. A first motor is provided at the top of the support plate. A first rotating shaft is rotatably provided inside the housing. The first spiral blade is installed on the first rotating shaft inside the housing. The left end of the first rotating shaft is connected to the output end of the first motor. Starting the first motor causes the first rotating shaft to drive the first spiral blade to rotate inside the housing. The first rotating shaft and the first spiral blade cooperate to convey and extrude the raw materials inside the housing.

[0008] Preferably, the stirring and preheating assembly includes a hollow rotating shaft, a hot air blower, an air delivery pipe, a rotary joint, a hollow stirring rod, a second spiral blade, and a driving assembly. A hollow rotating shaft is rotatably provided inside the feed hopper. The top end of the hollow rotating shaft extends above the feed hopper. A hot air blower is provided at the top of the feed hopper. The output end of the hot air blower is provided with an air delivery pipe. The output end of the air delivery pipe is rotatably communicated with the top end of the hollow rotating shaft through the cooperation of the rotary joint. A plurality of groups of hollow stirring rods are installed on the hollow rotating shaft inside the feed hopper. A plurality of groups of hollow stirring rods are all communicated with the hollow rotating shaft. The second spiral blade is installed on the hollow rotating shaft inside the feed hopper. The second spiral blade is below the hollow stirring rod. A driving assembly is provided at the top of the feed hopper. The driving assembly drives the hollow rotating shaft to rotate. Starting the hot air blower causes the hot air to enter the inside of the hollow rotating shaft through the air delivery pipe and preheat the raw materials inside the feed hopper through a plurality of groups of hollow stirring rods. Starting the driving assembly, the driving assembly drives the hollow rotating shaft to rotate. A plurality of groups of hollow stirring rods stir and preheat the raw materials inside the feed hopper at the same time. At the same time, the second spiral blade conveys the raw materials inside the feed hopper into the housing, improving the conveying efficiency.

[0009] Preferably, the driving assembly includes a second motor, a first sprocket, a second sprocket, and a chain. A second motor is provided at the top of the feed hopper. The output end of the second motor is provided with a first sprocket. A second sprocket is installed on the hollow rotating shaft. The first sprocket and the second sprocket are driven by the chain. Starting the second motor causes the first sprocket to drive the second sprocket to rotate through the cooperation of the chain, and further causes the second sprocket to drive the hollow rotating shaft to rotate.

[0010] Preferably, it further includes a filter screen, and the filter screen is installed on the air outlet hole; the filter screen prevents foreign impurities from entering the inside of the feed hopper, improving the protection performance.

[0011] Preferably, it further includes a reinforcing plate, and a reinforcing plate is provided between the housing and the support plate; the housing and the support plate are strengthened and connected through the reinforcing plate, improving the connection firmness.

[0012] Preferably, it further includes an observation window, and an observation port is provided on the feed hopper, and an observation window is installed on the observation port.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: The raw materials enter the interior of the feed hopper through the feed pipe. The stirring and preheating assembly is started, so as to stir and preheat the raw materials in the feed hopper, reduce the blockage of the raw materials in the feed hopper and preheat the raw materials in the feed hopper at the same time. The preheated raw materials enter the interior of the housing and are melted after being heated by the heating jacket. The extrusion assembly is started, so that the molten raw materials in the housing are discharged outside through the output end of the housing and wrapped around the outer side of the cable. Brief Description of the Drawings

[0014] Figure 1 is the first axonometric structural schematic diagram of the present utility model;

[0015] Figure 2 is the sectional structural schematic diagram of the present utility model;

[0016] Figure 3 is the second axonometric structural schematic diagram of the present utility model;

[0017] Figure 4 is the enlarged structural schematic diagram of structures such as the air delivery pipe and the hollow rotating shaft;

[0018] Figure 5 is Figure 4 the enlarged partial structural schematic diagram of part A in

[0019] Reference numerals in the drawings: 1, housing; 2, heating jacket; 3, feed hopper; 4, feed pipe; 5, support plate; 6, first motor; 7, first rotating shaft; 8, first spiral blade; 9, hollow rotating shaft; 10, hot air blower; 11, air delivery pipe; 12, rotary joint; 13, hollow stirring rod; 14, second spiral blade; 15, second motor; 16, first sprocket; 17, second sprocket; 18, chain; 19, filter screen; 20, reinforcing plate; 21, observation window. Detailed Embodiments

[0020] For the convenience of understanding the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided so that the disclosure of the present utility model is more thorough and comprehensive.

[0021] Embodiment 1

[0022] As Figure 1 , Figure 2 and Figure 3As shown in the figure, an extrusion device for the insulating layer of a cross-linked cable of the present utility model includes a housing 1, a heating sleeve 2, a feed hopper 3 and a feed pipe 4. The heating sleeve 2 is sleeved outside the housing 1. The feed hopper 3 is arranged at the top of the housing 1, and the feed pipe 4 is arranged at the top of the feed hopper 3. It further includes an extrusion assembly and a stirring and preheating assembly. The extrusion assembly is arranged on the housing 1, and the stirring and preheating assembly is arranged on the feed hopper 3. An air outlet hole is arranged at the top of the feed hopper 3;

[0023] As Figure 2 shown, the extrusion assembly includes a support plate 5, a first motor 6, a first rotating shaft 7 and a first spiral blade 8. The support plate 5 is arranged at the left end of the housing 1, the first motor 6 is arranged at the top of the support plate 5, the first rotating shaft 7 is rotatably arranged inside the housing 1, the first spiral blade 8 is installed on the first rotating shaft 7 inside the housing 1, and the left end of the first rotating shaft 7 is connected to the output end of the first motor 6;

[0024] As Figure 1 、 Figure 2 、 Figure 4 and Figure 5 shown, the stirring and preheating assembly includes a hollow rotating shaft 9, a hot air blower 10, an air delivery pipe 11, a rotary joint 12, a hollow stirring rod 13, a second spiral blade 14 and a driving assembly. The hollow rotating shaft 9 is rotatably arranged inside the feed hopper 3, the top end of the hollow rotating shaft 9 extends above the feed hopper 3, the hot air blower 10 is arranged at the top of the feed hopper 3, the output end of the hot air blower 10 is provided with the air delivery pipe 11, and the output end of the air delivery pipe 11 is rotatably communicated with the top end of the hollow rotating shaft 9 through the cooperation of the rotary joint 12. A plurality of groups of hollow stirring rods 13 are installed on the hollow rotating shaft 9 inside the feed hopper 3, and a plurality of groups of hollow stirring rods 13 are all communicated with the hollow rotating shaft 9. The second spiral blade 14 is installed on the hollow rotating shaft 9 inside the feed hopper 3, and the second spiral blade 14 is below the hollow stirring rod 13. A driving assembly is arranged at the top of the feed hopper 3, and the driving assembly drives the hollow rotating shaft 9 to rotate.

[0025] In this embodiment, the hot air blower 10 is started, so that the hot air enters the inside of the hollow rotating shaft 9 through the air delivery pipe 11 and preheats the raw materials inside the feed hopper 3 through a plurality of groups of hollow stirring rods 13. The driving assembly is started, and the driving assembly drives the hollow rotating shaft 9 to rotate. A plurality of groups of hollow stirring rods 13 stir and preheat the raw materials inside the feed hopper 3 at the same time. At the same time, the second spiral blade 14 conveys the raw materials inside the feed hopper 3 to the inside of the housing 1. The first motor 6 is started, so that the first rotating shaft 7 drives the first spiral blade 8 to rotate inside the housing 1. The first rotating shaft 7 and the first spiral blade 8 cooperate with each other to convey and extrude the raw materials inside the housing 1. The preheated raw materials enter the inside of the housing 1 and are heated and melted by the heating sleeve 2.

[0026] Embodiment 2

[0027] As Figure 1 、Figure 2 and Figure 3 As shown in Figure 3 , an extrusion device for a cross-linked cable insulating layer of the present utility model includes a housing 1, a heating sleeve 2, a feed hopper 3, and a feed pipe 4. The heating sleeve 2 is sleeved outside the housing 1. The feed hopper 3 is arranged at the top of the housing 1, and the feed pipe 4 is arranged at the top of the feed hopper 3. It further includes an extrusion assembly and a stirring and preheating assembly. The extrusion assembly is arranged on the housing 1, and the stirring and preheating assembly is arranged on the feed hopper 3. An air outlet hole is arranged at the top of the feed hopper 3;

[0028] As Figure 2 shown in Figure 2 , the extrusion assembly includes a support plate 5, a first motor 6, a first rotating shaft 7, and a first spiral blade 8. The support plate 5 is arranged at the left end of the housing 1. The first motor 6 is arranged at the top of the support plate 5. The first rotating shaft 7 is rotatably arranged inside the housing 1. The first spiral blade 8 is installed on the first rotating shaft 7 inside the housing 1. The left end of the first rotating shaft 7 is connected to the output end of the first motor 6;

[0029] As Figure 1 , Figure 2 , Figure 4 and Figure 5 shown in Figure 4 and Figure 5 , the stirring and preheating assembly includes a hollow rotating shaft 9, a hot air blower 10, an air delivery pipe 11, a rotary joint 12, a hollow stirring rod 13, a second spiral blade 14, and a driving assembly. The hollow rotating shaft 9 is rotatably arranged inside the feed hopper 3. The top end of the hollow rotating shaft 9 extends above the feed hopper 3. The hot air blower 10 is arranged at the top of the feed hopper 3. The output end of the hot air blower 10 is provided with the air delivery pipe 11. The output end of the air delivery pipe 11 is rotatably communicated with the top end of the hollow rotating shaft 9 through the cooperation of the rotary joint 12. A plurality of groups of hollow stirring rods 13 are installed on the hollow rotating shaft 9 inside the feed hopper 3. A plurality of groups of hollow stirring rods 13 are all communicated with the hollow rotating shaft 9. The second spiral blade 14 is installed on the hollow rotating shaft 9 inside the feed hopper 3. The second spiral blade 14 is below the hollow stirring rod 13. A driving assembly is arranged at the top of the feed hopper 3. The driving assembly drives the hollow rotating shaft 9 to rotate;

[0030] As Figure 4 and Figure 5 shown in Figure 4 and Figure 5 , the driving assembly includes a second motor 15, a first sprocket 16, a second sprocket 17, and a chain 18. The second motor 15 is arranged at the top of the feed hopper 3. The output end of the second motor 15 is provided with the first sprocket 16. The second sprocket 17 is installed on the hollow rotating shaft 9. The first sprocket 16 and the second sprocket 17 are driven by the chain 18;

[0031] It further includes a filter screen 19, a reinforcing plate 20, and an observation window 21. The filter screen 19 is installed on the air outlet hole. A reinforcing plate 20 is arranged between the housing 1 and the support plate 5. An observation port is arranged on the feed hopper 3, and the observation window 21 is installed on the observation port.

[0032] In this embodiment, the hot air blower 10 is started, so that hot air enters the interior of the hollow rotating shaft 9 through the air delivery pipe 11 and preheats the raw materials inside the feed hopper 3 through multiple groups of hollow stirring rods 13. The second motor 15 is started, so that the first sprocket 16 drives the second sprocket 17 to rotate in cooperation with the chain 18, and further the second sprocket 17 drives the hollow rotating shaft 9 to rotate. While the multiple groups of hollow stirring rods 13 stir the raw materials inside the feed hopper 3, they also preheat the raw materials. At the same time, the second spiral blade 14 conveys the raw materials inside the feed hopper 3 towards the interior of the housing 1. The first motor 6 is started, so that the first rotating shaft 7 drives the first spiral blade 8 to rotate inside the housing 1. The first rotating shaft 7 and the first spiral blade 8 cooperate with each other to convey and extrude the raw materials inside the housing 1. The preheated raw materials enter the interior of the housing 1 and are heated and melted by the heating sleeve 2.

[0033] The heating sleeve 2, the first motor 6, the hot air blower 10 and the second motor 15 of the cross-linked cable insulation layer extrusion device of the present utility model are purchased on the market. Those skilled in the industry only need to install and operate them according to the attached operation manuals, without the need for those skilled in the art to make creative efforts.

[0034] The above are only the preferred embodiments of the present utility model. It should be noted that for those ordinary skilled in the art in the technical field, without departing from the technical principle of the present utility model, several improvements and modifications can still be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A cross-linked cable insulation extrusion device, comprising a housing (1), a heating jacket (2), a feed hopper (3) and a feed pipe (4). The heating jacket (2) is sleeved outside the housing (1). The feed hopper (3) is arranged at the top of the housing (1), and the feed pipe (4) is arranged at the top of the feed hopper (3). It is characterized in that, It also includes an extrusion assembly and a stirring and preheating assembly. An extrusion assembly is provided on the housing (1), and a stirring and preheating assembly is provided on the feed hopper (3). An air outlet hole is provided at the top of the feed hopper (3).

2. The extrusion device for the insulating layer of a cross-linked cable according to claim 1, characterized in that, The extrusion assembly includes a support plate (5), a first motor (6), a first rotating shaft (7), and a first spiral blade (8). A support plate (5) is provided at the left end of the housing (1), a first motor (6) is provided at the top of the support plate (5), a first rotating shaft (7) is rotatably provided inside the housing (1), the first spiral blade (8) is installed on the first rotating shaft (7) inside the housing (1), and the left end of the first rotating shaft (7) is connected to the output end of the first motor (6).

3. A cross-linked cable insulation extrusion device according to claim 1, characterized in that, The stirring and preheating assembly includes a hollow rotating shaft (9), a hot air blower (10), an air delivery pipe (11), a rotary joint (12), a hollow stirring rod (13), a second spiral blade (14), and a driving assembly. A hollow rotating shaft (9) is rotatably provided inside the feed hopper (3), the top of the hollow rotating shaft (9) extends above the feed hopper (3), a hot air blower (10) is provided at the top of the feed hopper (3), the output end of the hot air blower (10) is provided with an air delivery pipe (11), and the output end of the air delivery pipe (11) is rotationally communicated with the top of the hollow rotating shaft (9) through the cooperation of the rotary joint (12). A plurality of groups of hollow stirring rods (13) are installed on the hollow rotating shaft (9) inside the feed hopper (3), and a plurality of groups of hollow stirring rods (13) are all communicated with the hollow rotating shaft (9). The second spiral blade (14) is installed on the hollow rotating shaft (9) inside the feed hopper (3), the second spiral blade (14) is below the hollow stirring rod (13), and a driving assembly is provided at the top of the feed hopper (3), and the driving assembly drives the hollow rotating shaft (9) to rotate.

4. The extrusion device for the insulating layer of a cross-linked cable according to claim 3, characterized in that, The driving assembly includes a second motor (15), a first sprocket (16), a second sprocket (17), and a chain (18). A second motor (15) is provided at the top of the feed hopper (3), the output end of the second motor (15) is provided with a first sprocket (16), a second sprocket (17) is installed on the hollow rotating shaft (9), and the first sprocket (16) and the second sprocket (17) are driven by the chain (18).

5. The extrusion device for the insulating layer of a cross-linked cable according to claim 4, characterized in that, It also includes a filter screen (19), and the filter screen (19) is installed on the air outlet hole.

6. The extrusion device for the insulating layer of a cross-linked cable according to claim 2, characterized in that, It also includes a reinforcing plate (20), and a reinforcing plate (20) is provided between the housing (1) and the support plate (5).

7. The extrusion device for the insulating layer of a cross-linked cable according to claim 1, characterized in that, It also includes an observation window (21), an observation port is provided on the feed hopper (3), and the observation window (21) is installed on the observation port.

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