A double-station cable insulation extrusion apparatus

Abstract

The utility model discloses a kind of cable insulation layer double-station extrusion equipment, it is related to cable processing equipment technical field.It includes rack, rack is equipped with underframe, guide rail frame and two groups of equipment support, and two groups of equipment support are all installed extrusion equipment;Extrusion equipment includes power part of lying in equipment support, and extrusion part is driven to be connected with power part, and feeding hopper is installed in extrusion part, and extrusion part is equipped with melting cavity, extrusion cavity and double screw propeller, and first heater is equipped in the outer shell of melting cavity and extrusion cavity, and feeding hopper is equipped with mixed material cylinder with oil inlet control device between melting cavity;It further includes oil supply system, which contains oil storage container, first oil pump, switching oil tank with second heater, second oil pump and two groups of filters.The utility model double-station design improves production efficiency, temperature control is accurate, oil supply system is independently controllable, pipeline is flexible and convenient to maintain, extrusion effect is good, and can solve many deficiencies of existing equipment.

Description

Technical Field

[0001] This utility model relates to cable processing equipment, specifically to a dual-station extrusion equipment for cable insulation layers. Background Technology

[0002] In cable manufacturing, insulation extrusion is a critical process that directly affects the cable's insulation performance and safety. Currently, most cable insulation extrusion equipment on the market is a single-station design, resulting in low production efficiency and difficulty in meeting the demands of large-scale production. Although some dual-station extrusion equipment has emerged, it still has many shortcomings in practical use:

[0003] On the one hand, insufficient temperature control precision during material melting and propulsion leads to unstable performance of the insulation layer material;

[0004] On the other hand, the oil supply system is mostly single-line oil supply, which makes it difficult to achieve independent and precise control of two workstations. Moreover, the oil filtration effect is poor, which can easily cause oil circuit blockage and affect equipment operation. At the same time, the equipment pipeline layout is fixed, with poor flexibility, which is not conducive to equipment maintenance and adjustment.

[0005] In addition, fire retardant oil is often added during the processing of cable insulation to improve the fire resistance of the insulation layer. In traditional oil supply systems, fire retardant oil is supplied directly without heating. The fire retardant oil has poor fluidity and does not mix evenly with the materials. This not only affects the fire retardant effect, but may also cause defects such as bubbles and cracks in the insulation layer due to excessively high local oil concentration.

[0006] Because there is a suitable temperature range for the bonding of cable insulation material and fire retardant oil, directly adding oil to the molten cavity will lead to uneven temperature, which in turn will result in the cable insulation material and fire retardant oil failing to meet quality standards.

[0007] Therefore, there is an urgent need for a dual-station extrusion equipment for cable insulation layers that has a reasonable structure, precise control, and high production efficiency to solve the above problems. Utility Model Content

[0008] The purpose of this invention is to overcome the problems of low production efficiency, insufficient temperature control accuracy, inaccurate oil supply system control, poor fire retardant oil mixing effect and poor pipeline flexibility in the existing cable insulation extrusion equipment, and to provide a dual-station cable insulation extrusion equipment.

[0009] To solve the above-mentioned technical problems, this utility model provides the following solution: A dual-station extrusion device for cable insulation layers includes a frame, a base frame, a guide rail frame mounted on the base frame, and two sets of equipment supports mounted on the base frame. Extrusion equipment is mounted on both sets of equipment supports. The extrusion equipment includes:

[0010] The power unit is horizontally mounted on the equipment bracket;

[0011] The extrusion section is horizontally mounted on the equipment support and driven by the power unit. The extrusion section has a melting chamber and an extrusion chamber communicating with the melting chamber. The extrusion chamber is equipped with a twin-screw propeller. A first heater is provided inside the outer shell of the melting chamber and the outer shell of the extrusion chamber.

[0012] A feeding hopper is installed in the extrusion section and communicates with the melting chamber. The feeding hopper has a mixing cylinder at one end connected to the melting chamber. The mixing cylinder has a side opening and is connected to an oil inlet control device.

[0013] The dual-station extrusion equipment also includes an oil supply system, which comprises:

[0014] Oil storage containers;

[0015] The first oil pump has its inlet end connected to the oil storage container via a first oil pipe;

[0016] The transfer oil tank is equipped with a second heater, and its oil inlet is connected to the output end of the first oil pump through a second oil pipe.

[0017] The second oil pump has its inlet end connected to the output end of the transfer oil tank via a third oil pipe;

[0018] Two sets of filters are provided, and the oil inlet of both sets of filters is connected to the output of the second oil pump through a fourth oil pipe. The output of the two sets of filters is connected one-to-one with the two sets of oil inlet control devices.

[0019] Furthermore, the top surface of the guide rail frame is provided with guide rails.

[0020] Furthermore, the fourth oil pipe is a "Y"-shaped oil pipe, with two branch pipes each equipped with a sliding bracket, and the two sliding brackets are slidably connected to the guide rail.

[0021] Furthermore, an exhaust pipe is installed at the upper end of the extrusion section, which is connected to the extrusion chamber.

[0022] Furthermore, the oil inlet control device is a solenoid valve.

[0023] Furthermore, the twin-screw propellers are either vertically distributed or horizontally distributed.

[0024] Furthermore, the power unit is a servo motor, which drives a twin-screw propeller via gears.

[0025] Furthermore, the servo motor drives and connects to a drive gear, which is fixed to one of the screw pushers. The drive gear meshes with a driven gear, which is fixed to another screw pusher. The drive gear and the driven gear have the same structure.

[0026] Furthermore, the filter is a wire gap filter.

[0027] Compared with the prior art, the beneficial effects of this utility model are:

[0028] 1. The dual-station design of this utility model dual-station extrusion equipment improves production efficiency: It is equipped with two independent extrusion devices, which can simultaneously perform the extrusion of cable insulation layers, greatly improving production efficiency and meeting the needs of large-scale production.

[0029] 2. The temperature control of this utility model's dual-station extrusion equipment is precise and stable: a first heater is installed in both the melting chamber of the extrusion section and the outer shell of the extrusion chamber, which can precisely heat the material during the melting and propulsion process in stages, ensuring that the material is always at the optimal processing temperature and improving the stability of the insulation layer material performance; at the same time, the transfer oil tank in the oil supply system is equipped with a second heater, which can heat the fireproof oil, improve its fluidity, and facilitate full mixing with the material in the mixing cylinder, thereby improving the fireproof effect and the quality of the insulation layer.

[0030] 3. The oil supply system of the dual-station extrusion equipment of this utility model is independent, precise and controllable: the oil supply system uses a "Y"-shaped fourth oil pipe in conjunction with two sets of filters to achieve independent oil supply to the two stations, and each set of oil supply pipelines corresponds to an oil inlet control device, which can precisely adjust the oil inlet volume of each station according to actual needs; the setting of the wire gap filter can effectively filter impurities in the oil, avoid oil circuit blockage, and ensure stable operation of the equipment.

[0031] 4. The pipeline layout of this utility model dual-station extrusion equipment is flexible and easy to maintain: the top surface of the guide rail frame is equipped with a guide rail, and the two branch pipes of the fourth oil pipe are slidably connected to the guide rail through a sliding bracket, so that the pipeline can slide along the guide rail, which increases the flexibility of the pipeline layout and facilitates the maintenance, adjustment and subsequent upgrade of the equipment.

[0032] 5. The dual-station extrusion equipment of this utility model has excellent extrusion effect: the extrusion chamber adopts a twin-screw propeller, which is driven by a servo motor to mesh with the active gear and the passive gear, so as to realize the synchronous reverse rotation of the twin screws, the material is pushed evenly and the conveying efficiency is high; the exhaust pipe at the upper end of the extrusion section can discharge the gas generated in the extrusion chamber in time, avoid the formation of air bubble defects in the insulation layer, and ensure product quality. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of the dual-station extrusion equipment of this utility model.

[0034] Figure 2 This is a schematic diagram of the extrusion equipment of this utility model.

[0035] Figure 3 This is a schematic diagram of the connection structure of the oil supply system of this utility model.

[0036] Figure 4 This is a schematic diagram of the meshing connection between the driving gear and the driven gear of this utility model.

[0037] The following labels are used in the attached diagram: 1-Frame, 2-Extrusion section, 3-Mixing cylinder, 4-Feed hopper, 5-Sliding support, 6-Guide rail frame, 7-Oil supply system, 8-Power unit, 9-Filter, 13-Third oil pipe, 22-First heater, 23-Exhaust pipe, 24-Twin screw propeller, 71-Oil storage container, 72-First oil pipe, 73-First oil pump, 74-Second oil pipe, 75-Transfer oil tank, 76-Second heater, 77-Fourth oil pipe, 78-Second oil pump, 81-Drive gear, 82-Driven gear. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present utility model. Obviously, the embodiments described in this utility model are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0039] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0040] Example 1: The specific structure of this utility model is as follows:

[0041] Please refer to the appendix. Figure 1-4 This utility model discloses a dual-station extrusion equipment for cable insulation, comprising a frame 1, a base frame, a guide rail frame 6 mounted on the base frame, and two sets of equipment supports mounted on the base frame. Extrusion equipment is mounted on both sets of equipment supports. The extrusion equipment includes:

[0042] Power unit 8 is horizontally mounted on the equipment bracket;

[0043] The extrusion section 2 is horizontally mounted on the equipment support and driven by the power unit 8. The extrusion section 2 has a melting chamber and an extrusion chamber communicating with the melting chamber. The extrusion chamber is equipped with a twin-screw propeller 24. A first heater 22 is provided inside the outer shell of the melting chamber and the outer shell of the extrusion chamber.

[0044] Feed hopper 4 is installed in the extrusion section 2 and communicates with the melting chamber. The feed hopper 4 has a mixing cylinder 3 at one end connected to the melting chamber. The mixing cylinder 3 has a side opening and is connected to an oil inlet control device.

[0045] The dual-station extrusion equipment also includes an oil supply system 7, which comprises:

[0046] Oil storage container 71;

[0047] The first oil pump 73 has its oil inlet end connected to the oil storage container 71 via the first oil pipe 72;

[0048] The transfer oil tank 75 is equipped with a second heater 76, the oil inlet of which is connected to the output end of the first oil pump 73 through a second oil pipe 74.

[0049] The second oil pump 78 has its inlet end connected to the output end of the transfer oil tank 75 via the third oil pipe 13.

[0050] Two sets of filters 9, the oil inlet ends of both sets of filters 9 are connected to the output end of the second oil pump 78 through the fourth oil pipe 77, and the output ends of the two sets of filters 9 are connected one-to-one with the two sets of oil inlet control devices.

[0051] The top surface of the guide rail frame 6 is equipped with a guide rail. The fourth oil pipe 77 is a "Y"-shaped oil pipe, and both of its branch pipes are equipped with sliding supports 5, which are slidably connected to the guide rail. When maintenance or adjustment of the equipment is required, the sliding supports 5 can be pushed to move along the guide rail, thereby moving the branch pipes of the fourth oil pipe 77 and increasing the operating space.

[0052] An exhaust pipe 23 is installed at the upper end of the extrusion section 2, and the exhaust pipe 23 is connected to the extrusion chamber.

[0053] The oil inlet control device is a solenoid valve.

[0054] The twin-screw propeller 24 can be distributed vertically or horizontally.

[0055] The power unit 8 is a servo motor, which drives the twin-screw propeller 24 through gears.

[0056] The servo motor drives and connects to a drive gear 81, which is fixed to one of the screw propellers. The drive gear 81 meshes with a driven gear 82, which is fixed to the other screw propeller. The drive gear 81 and driven gear 82 have identical structures. This ensures that the twin screw propellers 24 rotate at the same speed but in opposite directions, improving the stability of material conveying.

[0057] The filter 9 is a wire-gap filter. It has high filtration accuracy and can effectively remove impurities from the oil, preventing impurities from entering the mixing cylinder 3 and affecting product quality or clogging the oil passage.

[0058] Example 2:

[0059] The working process of this utility model is as follows:

[0060] Step 1: Add the insulating material to the feed hopper 4 and the material enters the mixing cylinder 3. At the same time, the oil supply system 7 starts to work. The fire retardant oil in the oil storage container 71 enters the transfer oil tank 75 through the first oil pipe 72 and the second oil pipe 74 under the action of the first oil pump 73. The second heater 76 heats the fire retardant oil to a suitable temperature. The heated fire retardant oil enters the two sets of filters 9 through the third oil pipe 13 and the fourth oil pipe 77 under the action of the second oil pump 78. The filtered fire retardant oil enters the corresponding mixing cylinder 3 through the oil inlet control device and mixes with the raw material.

[0061] Step 2: The mixed material enters the melting chamber of extrusion section 2;

[0062] Step 3: The first heater 22 heats the melting chamber to melt the material. The molten material enters the extrusion chamber and is extruded under the propulsion of the twin-screw pusher 24. At the same time, the first heater 22 heats the extrusion chamber to ensure that the extrusion temperature of the material is stable, and finally the dual-station extrusion operation of the cable insulation layer is completed.

[0063] In summary, the dual-station design of this utility model's dual-station extrusion equipment improves production efficiency: by setting up two independent extrusion devices, the extrusion of cable insulation layers can be carried out simultaneously, which greatly improves production efficiency and meets the needs of large-scale production.

[0064] The temperature control of this dual-station extrusion equipment is precise and stable: a first heater is installed in both the melting chamber of the extrusion section and the outer shell of the extrusion chamber, which can perform segmented and precise heating of the material melting and propulsion process, ensuring that the material is always at the optimal processing temperature and improving the stability of the insulation layer material performance; at the same time, the transfer oil tank in the oil supply system is equipped with a second heater, which can heat the fireproof oil, improve its fluidity, and facilitate full mixing with the material in the mixing cylinder, thereby improving the fireproof effect and the quality of the insulation layer.

[0065] The oil supply system of this utility model dual-station extrusion equipment is independent, precise and controllable: the oil supply system uses a "Y"-shaped fourth oil pipe in conjunction with two sets of filters to achieve independent oil supply to the two stations, and each set of oil supply pipelines corresponds to an oil inlet control device, which can precisely adjust the oil inlet volume of each station according to actual needs; the setting of the wire gap filter can effectively filter impurities in the oil, avoid oil circuit blockage, and ensure stable operation of the equipment.

[0066] This utility model's dual-station extrusion equipment features a flexible and easy-to-maintain pipeline layout: the top surface of the guide rail frame is equipped with a guide rail, and the two branch pipes of the fourth oil pipe are slidably connected to the guide rail through a sliding bracket, allowing the pipeline to slide along the guide rail, increasing the flexibility of the pipeline layout and facilitating the maintenance, adjustment, and subsequent upgrades of the equipment.

[0067] This utility model of dual-station extrusion equipment has excellent extrusion effect: the extrusion chamber adopts a twin-screw propeller, which is driven by a servo motor to mesh with the active gear and the passive gear, so as to realize the synchronous reverse rotation of the twin screws, the material is pushed evenly and the conveying efficiency is high; the exhaust pipe at the upper end of the extrusion section can discharge the gas generated in the extrusion chamber in time, avoid the formation of air bubble defects in the insulation layer, and ensure product quality.

[0068] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A dual-station extrusion equipment for cable insulation, comprising a frame (1), the frame (1) having a base frame, the frame (1) further comprising a guide rail frame (6) mounted on the base frame and two sets of equipment supports mounted on the base frame, each set of equipment supports being equipped with an extrusion device, characterized in that, The extrusion equipment includes: The power unit (8) is horizontally mounted on the equipment bracket; The extrusion section (2) is horizontally mounted on the equipment support and driven by the power unit (8). The extrusion section (2) has a melting chamber and an extrusion chamber communicating with the melting chamber. The extrusion chamber is equipped with a twin-screw propeller (24). A first heater (22) is provided in both the outer shell of the melting chamber and the outer shell of the extrusion chamber. The feed hopper (4) is installed in the extrusion section (2) and communicates with the melting chamber. The feed hopper (4) has a mixing cylinder (3) at one end connected to the melting chamber. The mixing cylinder (3) has a side opening and is connected to an oil inlet control device. The dual-station extrusion equipment also includes an oil supply system (7), which comprises: Oil storage container (71); The first oil pump (73) has its oil inlet end connected to the oil storage container (71) via the first oil pipe (72); The transfer oil tank (75) is equipped with a second heater (76), the oil inlet of which is connected to the output end of the first oil pump (73) through a second oil pipe (74); The second oil pump (78) is connected to the output end of the transfer tank (75) via a third oil pipe (13). Two sets of filters (9) are provided. The oil inlet of both sets of filters (9) is connected to the output of the second oil pump (78) through the fourth oil pipe (77). The output of the two sets of filters (9) is connected one-to-one with the two sets of oil inlet control devices.

2. The dual-station extrusion equipment for cable insulation layer according to claim 1, characterized in that, The top surface of the guide rail frame (6) is provided with a guide rail.

3. The dual-station extrusion equipment for cable insulation layer according to claim 2, characterized in that, The fourth oil pipe (77) is a "Y" shaped oil pipe, and both of its two branch pipes are equipped with sliding supports (5), which are slidably connected to the guide rail.

4. The dual-station extrusion equipment for cable insulation layer according to claim 1, characterized in that, An exhaust pipe (23) is installed at the upper end of the extrusion section (2), and the exhaust pipe (23) is connected to the extrusion chamber.

5. The dual-station extrusion equipment for cable insulation layer according to claim 1, characterized in that, The oil inlet control device is a solenoid valve.

6. The dual-station extrusion equipment for cable insulation layer according to claim 1, characterized in that, The twin-screw propeller (24) is distributed vertically or horizontally.

7. A dual-station extrusion equipment for cable insulation layers according to claim 6, characterized in that, The power unit (8) is a servo motor that drives a twin-screw propeller (24) via gears.

8. A dual-station extrusion equipment for cable insulation layers according to claim 7, characterized in that, The servo motor drives the active gear (81), which is fixed to one of the screw pushers. The active gear (81) is meshed with a passive gear (82), which is fixed to another screw pusher. The active gear (81) and the passive gear (82) have the same structure.

9. A dual-station extrusion equipment for cable insulation layers according to claim 1, characterized in that, The filter (9) is a wire gap filter.

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