CN112895388A

CN112895388A - Cable manufacture cooling device

Info

Publication number: CN112895388A
Application number: CN202110297952.4A
Authority: CN
Inventors: 彭云; 陈文怡; 杨超
Original assignee: Chongqing Pigeon Electric Wire and Cable Co Ltd
Current assignee: Chongqing Pigeon Electric Wire and Cable Co Ltd
Priority date: 2021-03-19
Filing date: 2021-03-19
Publication date: 2021-06-04

Abstract

The invention discloses a cable production cooling device in the field of cables, which comprises a first water cooling unit, wherein the first water cooling unit comprises a first water tank and a first cooling tower, a water inlet pipe of the first cooling tower is communicated with the first water tank, a heating block, a water flow control mechanism and a temperature control mechanism are arranged in the first water tank, the water flow control mechanism comprises a water control part and a first electromagnet, a negative temperature coefficient thermistor is connected in series in a power supply loop, the water control part is connected between the first electromagnet and the water inlet pipe, the temperature control mechanism comprises a temperature control part and a second electromagnet, a positive temperature coefficient thermistor is connected in series in the power supply loop, and the temperature control part is connected between the second electromagnet and the heating block. The invention can solve the problems that the temperature of the first section of water tank is not controlled and the cooling quality of the electric wire and the cable is not stable in the existing slow cooling technology.

Description

Cable manufacture cooling device

Technical Field

The invention relates to the field of cable production, in particular to a cooling device for cable production.

Background

The molded electric wire and cable in the production process of the electric wire and cable is cooled and shaped immediately after leaving the head of the extruder, otherwise, the electric wire and cable deforms under the action of gravity. The cooling method generally adopts water cooling, and the cooling method is divided into rapid cooling and slow cooling according to different water temperatures. The rapid cooling is direct cold water cooling, the rapid cooling has strong shaping effect on the plastic extrusion coating, but for the crystalline polymer, internal stress is easy to remain in the structure of the extrusion coating due to the rapid heat cooling, and the wire and the cable are cracked in the using process. The slow cooling is to reduce the internal stress of the product, and water with different temperatures is placed in the cooling water tank in sections to gradually cool and shape the product. The first section water tank of the sectional type cooling water tank commonly used at present is that the cooling water circulation speed is reduced, the waste heat of the plastic extrusion coating of the electric wire and the cable is used for heating the cooling water to a certain extent, and the influence of sudden heat cooling on the product quality is avoided. But the specific water temperature in the first section of water tank can not be known, and the water flow speed is changed only by the experience of operators, the temperature is not controlled, and the cooling and shaping quality of the product is not stable.

Disclosure of Invention

The invention aims to provide a cable production cooling device to solve the problems that the temperature of a first section of water tank is not controlled and the cooling quality of wires and cables is unstable in the existing slow cooling technology.

In order to achieve the purpose, the basic technical scheme of the invention is as follows: the utility model provides a cable manufacture cooling device, including first water-cooling unit, first water-cooling unit includes first basin and first cooling tower, the inlet tube and the first basin intercommunication of first cooling tower, be equipped with the heating piece in the first basin, rivers control mechanism and temperature control mechanism, rivers control mechanism establishes ties in accuse water spare and the power return circuit and has the first electro-magnet of negative temperature coefficient thermistor, accuse water spare is connected between first electro-magnet and inlet tube, temperature control mechanism establishes ties in accuse temperature spare and the power return circuit and has the second electro-magnet of positive temperature coefficient thermistor, accuse temperature spare is connected between second electro-magnet and heating piece.

The principle and the advantages of the scheme are as follows: during practical application, the cable enters the first water tank after being extruded from the extruding machine, the first cooling tower provides circulating water for the first water tank, and the cable is cooled by water again after the circulating water is cooled. The heating block heats the water in the first water tank, and the water flow control mechanism is used for automatically sensing the water temperature in the first water tank, so that the opening and closing degree of the water inlet pipe is controlled, the control of the circulating water quantity in the first water tank is realized, and the automatic cooling of the temperature of the first water tank is completed. The temperature of circulating water in the first water tank is sensed through the negative temperature coefficient thermistor, and the resistance value is changed correspondingly, so that the magnetic force of the first electromagnet is changed, the flow of the circulating water is automatically controlled through the water control piece, and the temperature of the water body in the first water tank is adjusted. The positive temperature coefficient thermistor senses the temperature of the water body in the first water tank and correspondingly changes the resistance value, so that the magnetic force of the second electromagnet changes, the heating temperature of the heating block is controlled through the temperature control piece, and the temperature of the water body in the first water tank is adjusted. The automatic regulation control of the temperature of the water body in the first water tank is realized by combining two modes of directly controlling the heating temperature and controlling the flow of the circulating water, so that the electric wire and the cable which are just molded and wrapped in the plastic extruding machine are stably, reliably and high-quality buffered water-cooling shaping, the plastic extruding layer of the electric wire and the cable can be reliably shaped, the generation of internal stress is avoided, and the high-quality cooling shaping of electric wire and cable products is ensured.

Further, accuse water spare is including fixing the first sealed piece at the water pipe end portion, rotates on the first sealed piece to be connected with the sealed piece of second, all is equipped with the breach on first sealed piece and the sealed piece of second, is connected with the driving medium between the sealed piece of second and the first electro-magnet. As preferably like this first sealed piece as the mounting, the second sealed piece is as rotatory moving part, and the breach on the two supplies the circulating water to flow between first cooling tower and first basin, and first sealed piece and second sealed piece form adjusting valve, and the magnetic force of first electro-magnet changes the action of turning into the second sealed piece through the driving medium and realizes the regulation control to the circulating water flow, and the structure is succinct like this, and is reliable effective to the control of circulating water flow.

Further, the transmission part comprises a first iron block, a spring is connected between the first iron block and the first electromagnet, a rack is arranged on the first iron block, and a gear meshed with the rack is fixed on the second sealing block. The linkage between the first electromagnet and the first iron block is realized through attracting magnetic force preferably, the change of the temperature in the first water tank is converted into the displacement of the first iron block through the magnetic force, the second sealing block is driven to act through the transmission of the rack and the gear to control the flow of circulating water, and the spring is used as a buffering reset piece of the first iron block, so that the first iron block acts stably, can be automatically adjusted and reset in the temperature change process, and accurately controls the flow of the circulating water.

Furthermore, accuse temperature piece includes first magnet, is connected with the spring between first magnet and the second electro-magnet, and first magnet repels the setting with the second electro-magnet mutually, and first magnet insulation is connected with resistance coil, and sliding connection has the gleitbretter on the resistance coil, and resistance coil and gleitbretter are established ties in the circuit of heating piece. Preferably like this through repelling magnetic force realize the linkage between second electro-magnet and the first magnet, pass through the displacement of magnetic force transformation first magnet with the change of temperature in the first basin, first magnet drives resistance coil and moves for the gleitbretter relatively, and then makes resistance change in the heating block circuit, the sensitive heating degree of adjusting the heating block.

Further, still include dry unit, dry unit includes air-dry mechanism and wiping mechanism, and air-dry mechanism is located wiping mechanism top, and the cable passes from air-dry mechanism and wiping mechanism between, and air-dry mechanism bottom is equipped with the air outlet towards the cable. The residual moisture on the surface of the wire and cable can be dried after water cooling through the drying unit preferably, the air drying mechanism can blow the surface of the wire and cable from the upper part and blow the excessive moisture from the upper side to the lower side of the wire and cable, the wiping mechanism is positioned below the wire and cable and wipes the moisture on the lower side surface of the wire and cable, and the wire and cable can be effectively dried after water cooling and shaping under the dual functions.

Further, clean the mechanism and include the motor and clean the dish, the motor with clean and be connected with geneva mechanism between the dish, clean the periphery of dish and be equipped with the wiping cloth, clean the dish outside and be equipped with and carry out dry heating member to the wiping cloth. The wiping disk is preferably intermittently rotated by the motor as wiping power through the sheave mechanism, the wiping cloth on the wiping disk wipes water on the electric wire and cable, and the heating piece dries the wiping cloth which absorbs a large amount of water in the intermittent rotation process of the wiping disk so as to effectively wipe the water on the electric wire and cable after the wiping disk rotates again.

Further, a second water cooling unit is arranged between the first water cooling unit and the drying unit, and the second water cooling unit is a second water tank filled with room-temperature cold water. The wire and cable can be finally cooled after being shaped and cooled by the first water tank through the second water cooling unit as an advantage, so that the shaping quality is ensured, and the internal stress is effectively eliminated.

Further, an air cooling unit is arranged between the first water cooling unit and the second water cooling unit. Can carry out transition cooling to wire and cable after the first basin is tentatively cooled off and is stereotyped as preferred through the air-cooled unit, cushion wire and cable's cooling rate for stable and inside internal stress that does not produce of stereotyping.

Further, the heating member is located the below of wiping the dish, and air-dry mechanism includes bellows, and the bellows bottom is equipped with exhaust pipe and the air outlet towards the cable, and the outer peripheral face of dish is cleaned to the exhaust pipe orientation. Preferably, the wiping cloth on the wiping tray is dried by the heating element from the lower part, the air outlet of the air box dries the surface of the electric wire and the electric cable, the exhaust pipe dries the part of the wiping cloth which is not in contact with the electric wire and the electric cable from the outer side, and the wiping cloth dried by the heating element is further dried, so that the wiping cloth can effectively dry the water on the electric wire and the electric cable after rotating again.

Drawings

FIG. 1 is a schematic front view of an embodiment of the present invention;

FIG. 2 is a front view of a water control member in an embodiment of the present invention;

FIG. 3 is a left side view of a transmission member in an embodiment of the present invention;

FIG. 4 is a left side view of a temperature control mechanism in an embodiment of the present invention;

fig. 5 is an elevation view of a Geneva gear in an embodiment of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a first cooling tower 1, a first water tank 2, a positive temperature coefficient thermistor 3, a negative temperature coefficient thermistor 4, an electric heating block 5, an air cooling unit 6, an electric wire 7, a second water cooling unit 8, an air drying mechanism 9, a double-shaft motor 10, a sheave mechanism 11, a wiping disc 12, an electric heating plate 13, a dial 14, a sheave 15, a rotating shaft 16, a water inlet pipe 17, a first sealing block 18, a second sealing block 19, a gear 191, a first iron block 20, a rack 201, a first electromagnet 21, a second electromagnet 22, a resistance coil 23, a first magnet 24, a sliding sheet 25, a first electric wire 26 and a second electric wire 27.

The embodiment is basically as shown in the attached figure 1: the utility model provides a cable manufacture cooling device, includes first water-cooling unit, and first water-cooling unit includes first basin 2 and first cooling tower 1, and the inlet tube 17 and the first basin 2 intercommunication of first cooling tower 1, first basin 2 are connected with electrical heating piece 5, current control mechanism and temperature control mechanism. The water flow control mechanism comprises a water control piece and a first electromagnet 21 connected with a negative temperature coefficient thermistor 4 in series in a power supply loop, and the negative temperature coefficient thermistor 4 is inserted into the first water tank 2. Combine fig. 2 to show, accuse water spare is connected between first electro-magnet 21 and inlet tube 17, and accuse water spare is including fixing the first sealed piece 18 of circular shape at the inlet tube 17 tip, and coaxial rotation is connected with the sealed piece 19 of circular shape second on the first sealed piece 18, all is equipped with the breach on first sealed piece 18 and the sealed piece 19 of second, is connected with the driving medium between the sealed piece 19 of second and the first electro-magnet 21. Referring to fig. 3, the transmission member includes a first iron block 20, a spring is bonded between the first iron block 20 and the first electromagnet 21, a rack 201 is integrally formed on the first iron block 20, and a gear 191 engaged with the rack 201 is coaxially and integrally formed on the second sealing block 19.

Referring to fig. 4, the temperature control mechanism includes a temperature control member and a second electromagnet 22 having a ptc thermistor 3 connected in series in a power supply circuit, and the ptc thermistor 3 is inserted into the first water tank 2. The temperature control piece is connected between the second electromagnet 22 and the heating block and comprises a first magnet 24, a spring is bonded between the first magnet 24 and the second electromagnet 22, the first magnet 24 and the electrified second electromagnet 22 are arranged in a repelling mode, and the temperature control piece is specifically realized by adjusting the coil current direction of the second electromagnet 22. The first magnet 24 is adhered with a resistance coil 23 through an insulating rod, the end part of the resistance coil 23 close to the first magnet 24 is connected with a first electric wire 26, the resistance coil 23 is connected with a sliding piece 25 in a sliding way, the sliding piece 25 is connected with a second electric wire 27, the first electric wire 26 and the second electric wire 27 connect the resistance coil 23 and the sliding piece 25 in series in the circuit of the electric heating block 5, and thus the resistance coil 23 and the sliding piece 25 form a sliding rheostat connected in series in the circuit of the electric heating block 5.

As shown in fig. 1, the drying device further comprises a drying unit, the drying unit comprises a drying mechanism 9 and a wiping mechanism, the drying mechanism 9 is located above the wiping mechanism, the cable penetrates through the drying mechanism 9 and the wiping mechanism, and an air outlet facing the cable is formed in the bottom of the drying mechanism 9. Referring to fig. 5, the wiping mechanism includes a dual-shaft motor 10 and a wiping tray 12, a sheave mechanism 11 is connected between the dual-shaft motor 10 and the wiping tray 12, a rotating shaft 16 of the dual-shaft motor 10 is connected with a sheave 15 of the sheave mechanism 11, the wiping tray 12 is coaxially connected with a driving plate 14 of the sheave mechanism 11, wiping cloth is bonded to the periphery of the wiping tray 12, and a heating member for drying the wiping cloth is disposed on the outer side of the wiping tray 12. The heating member is an electric heating plate 13 positioned below the wiping disc 12, the air drying mechanism 9 comprises an air box, the bottom of the air box is provided with an exhaust pipe and an air outlet facing the cable, and the exhaust pipe faces the peripheral surface of the wiping disc 12.

As shown in fig. 1, a second water cooling unit 8 is further disposed between the first water cooling unit and the drying unit, the second water cooling unit 8 is a second water tank containing cold water at room temperature, and the second water tank is communicated with a second cooling tower. An air cooling unit 6 is further arranged between the first water cooling unit and the second water cooling unit 8, the air cooling unit 6 is a cooling air box, and a plurality of air outlets facing the electric wires and cables 7 are formed in the cooling air box.

The specific implementation process is as follows: the electric wire 7 is extruded from the extruder and then drawn into the first water tank 2, cooling water circulates between the first water tank 2 and the first cooling tower 1, and the electric heating block 5 heats the cooling water in the first water tank 2 so as to avoid cracking caused by the fact that the plastic extrusion layer of the electric wire 7 extruded from the extruder suddenly contacts with the cooling water with large temperature difference to generate residual stress inside. The cooling water in the first water tank 2 needs to be kept in a relatively stable temperature range, but the temperature of the electric wire 7 extruded from the extruder is much higher than that of the cooling water in the first water tank 2, so that the temperature in the first water tank 2 is continuously increased in the continuous use process, and the shaping and cooling quality of the plastic extrusion layer is reduced.

Under normal conditions, before cooling the electric wire 7, the temperature in the first water tank 2 is a suitable temperature, the rack 201 is meshed with the gear 191, the gap parts on the first sealing block 18 and the second sealing block 19 coincide, the current of the second electromagnet 22 is stable, the resistance value of the resistance coil 23 connected to the circuit of the electric heating block 5 is stable, the current of the electric heating block 5 is stable, the heating of the electric heating block 5 to the cooling water and the circulation of the cooling water are kept balanced, and the temperature in the first water tank 2 is kept stable. In the present embodiment, the negative temperature coefficient thermistor 4 and the positive temperature coefficient thermistor 3 are configured to detect the temperature in the first water tank 2. After the electric wire 7 enters the first water tank 2, the temperature of the electric wire 7 just extruded from the extruding machine is higher than that of the cooling water in the first water tank 2, so that the temperature of the cooling water in the first water tank 2 is increased, the resistance value of the negative temperature coefficient thermistor 4 is reduced, the current of the first electromagnet 21 is increased, the magnetic force of the first electromagnet 21 is enhanced, the first electromagnet 21 attracts the first iron block 20, the rack 201 on the first iron block 20 drives the gear 191 to rotate, the gear 191 drives the second sealing block 19 to rotate relative to the first sealing block 18, the overlapping area of the gap between the second sealing block 19 and the first sealing block 18 is increased, the circulation flow of the cooling water between the first water tank 2 and the first cooling tower 1 is increased, the circulating is the cold water in the first cooling tower 1, and the cooling water in the first water tank 2 is cooled. Meanwhile, the resistance value of the positive temperature coefficient thermistor 3 is increased, the current of the second electromagnet 22 is reduced, the magnetic force is weakened, the repulsive force of the second electromagnet 22 to the first magnet 24 is weakened, the first magnet 24 moves towards the second electromagnet 22 under the pulling of the spring, and the insulating rod drives the resistance coil 23 to move together, so that the resistance connected into the circuit of the electric heating block 5 between the resistance coil 23 and the slide piece 25 is increased, the current in the circuit of the electric heating block 5 is reduced, and the heating power of the electric heating block 5 is reduced.

If the temperature of the cooling water in the first water tank 2 is reduced, the resistance value of the negative temperature coefficient thermistor 4 is increased, so that the current of the first electromagnet 21 is reduced, the magnetic force of the first electromagnet 21 is weakened, the first iron block 20 is pushed away by the spring, the gear rack 201 pushes the gear 191, the gear 191 drives the second sealing block 19 to rotate, the overlapped gap is reduced, and the circulating flow of the cooling water is reduced. Meanwhile, the resistance value of the positive temperature coefficient thermistor 3 is reduced, the current of the second electromagnet 22 is increased, the repulsive force to the first magnet 24 is increased, so that the first magnet 24 pushes the resistance coil 23 to move through the insulating rod, the resistance connected into the circuit of the electric heating block 5 between the resistance coil 23 and the slide piece 25 is reduced, the current in the circuit of the electric heating block 5 is increased, the heating power of the electric heating block 5 to the cooling water in the first water tank 2 is increased, and the temperature of the cooling water in the first water tank 2 is increased.

Thus, after the electric wire and cable 7 enters the first water tank 2, the temperature is converted into corresponding action trigger signals through the temperature induction of the negative temperature coefficient thermistor 4 and the positive temperature coefficient thermistor 3, and the temperature can be automatically and spontaneously controlled and adjusted when the temperature changes, so that the temperature of the cooling water in the first water tank 2 is adjusted to be suitable for the plastic extrusion layer cooling and shaping of the electric wire and cable 7 in real time.

The electric wire and cable 7 which is subjected to dynamic temperature regulation and cooling shaping through the first water tank 2 enters the second water tank, air cooling is carried out through the air cooling unit 6 before entering the second water tank, an air outlet of the cooling air box blows air to the electric wire and cable 7 to transition the cooling speed of the electric wire and cable 7, then the electric wire and cable 7 enters the second water tank, and cold water is directly adopted in the second water tank to carry out final cooling on the electric wire and cable 7. And the cooled electric wire 7 enters a drying unit, and a wind box blows air from top to bottom in the drying unit to blow dry the moisture on the upper surface of the electric wire 7. A double-shaft motor 10 in the wiping mechanism drives a sheave mechanism 11, the sheave mechanism 11 drives a wiping disc 12 to rotate intermittently, and wiping cloth on the wiping disc 12 wipes water on the surface of the electric wire 7 from the lower part. The part of the wiping cloth which absorbs water and is wet rotates above the electric heating plate 13 in the intermittent rotation process of the wiping disc 12, the electric heating plate 13 dries the wet wiping cloth, and the exhaust pipe of the air box dries the dried wiping cloth again and cools down the wiping cloth, so that the wiping cloth can dry the subsequent electric wires and cables 7 again.

The foregoing is merely an example of the present invention and common general knowledge in the art of specific structures and/or features of the invention has not been set forth herein in any way. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. A cable production cooling device is characterized in that: comprising a first water-cooling unit, the first water-cooling unit comprises a first water tank and a first cooling tower, the water inlet pipe of the first cooling tower is communicated with the first water tank, the first A heating block, a water flow control mechanism and a temperature control mechanism are arranged in the water tank. The water flow control mechanism includes a water control piece and a first electromagnet with a negative temperature coefficient thermistor connected in series in the power circuit, and the water control piece is connected to the first electromagnet. Between the iron and the water inlet pipe, the temperature control mechanism includes a temperature control element and a second electromagnet with a positive temperature coefficient thermistor connected in series in the power circuit, and the temperature control element is connected between the second electromagnet and the heating block.

2 . The cooling device for cable production according to claim 1 , wherein the water control member comprises a first sealing block fixed on the end of the water inlet pipe, and a second sealing block is rotatably connected to the first sealing block. 3 . The sealing block, the first sealing block and the second sealing block are both provided with a gap, and a transmission element is connected between the second sealing block and the first electromagnet.

3. A cable production cooling device according to claim 2, characterized in that: the transmission member comprises a first iron block, a spring is connected between the first iron block and the first electromagnet, and the first iron block is mounted on the first iron block. A rack is provided, and a gear meshing with the rack is fixed on the second sealing block.

4. A cable production cooling device according to claim 3, wherein the temperature control element comprises a first magnet, a spring is connected between the first magnet and the second electromagnet, and the first magnet and the second electromagnet are connected with a spring. The electromagnets are arranged to repel each other, the first magnet is insulated and connected with a resistance coil, the resistance coil is slidably connected with a sliding plate, and the resistance coil and the sliding plate are connected in series in the circuit of the heating block.

5. A cable production cooling device according to claim 4, characterized in that it further comprises a drying unit, the drying unit includes an air-drying mechanism and a wiping mechanism, the air-drying mechanism is located above the wiping mechanism, and the cable passes between the air-drying mechanism and the wiping mechanism Through, the bottom of the air drying mechanism is provided with an air outlet facing the cable.

6. A cable production cooling device according to claim 5, wherein the wiping mechanism comprises a motor and a wiping disc, a sheave mechanism is connected between the motor and the wiping disc, and a wiping cloth is provided on the periphery of the wiping disc , and the outside of the wiping disc is provided with a heating element for drying the wiping cloth.

7. A cable production cooling device according to claim 6, characterized in that: a second water cooling unit is further provided between the first water cooling unit and the drying unit, and the second water cooling unit is filled with A second sink of room temperature cold water.

8 . The cable production cooling device according to claim 7 , wherein an air cooling unit is further arranged between the first water cooling unit and the second water cooling unit. 9 .

9. A cable production cooling device according to claim 8, characterized in that: the heating element is located below the wiping disc, the air drying mechanism comprises a bellows, and the bottom of the bellows is provided with an exhaust pipe and an air outlet toward the cable , the exhaust duct faces the outer peripheral surface of the wiping disc.