A cooling device for a cable extrusion production line

Abstract

The application relates to the field of cable extrusion production, and particularly discloses a cooling device for a cable extrusion production line, which comprises a support, a water tank connected to the upper end of the support, a water inlet pipe and a water outlet pipe connected to the water tank, a pre-cooling mechanism connected to one end of the water tank, the pre-cooling mechanism comprising a water return channel for the cable to pass through, a supporting strip connected to the upper end of the water return channel, a water guide plate connected to the upper end of the supporting strip, and a spray head opposite to the water guide plate, the water return channel is arranged to be inclined and the lower end is located in the water tank, the water guide plate is symmetrically arranged with two, a water guide gap is arranged between the two water guide plates, the water guide gap is used for facing the upper side of the cable, the water return channel is connected with a fixing frame, and the spray head is arranged with a plurality of and connected with the fixing frame. Through the arrangement of the pre-cooling mechanism, the cable sheath is cooled in time, the sheath is preliminarily shaped and is not prone to sagging, and the cable eccentricity is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cable extrusion production, in particular to a cooling device for a cable extrusion production line. BACKGROUND

[0002] The cable refers to a cable for transmitting power or signal, and the cable sheath as the outermost layer of the cable plays an insulation protection role. The cable extrusion production line is a production line for forming the cable sheath, and its production process is as follows: the bare cable without the sheath is pulled through the extruder by the traction device, the cable sheath material is coated on the outer surface of the bare cable after being heated and melted by the extruder, then is extruded from the die head to form the sheath, and then is cooled and shaped by the cold water device, and finally is air dried.

[0003] In the related technology, the cooling device comprises a water tank, the water tank is connected with a water inlet pipe and a water outlet pipe, and a plurality of supporting rollers are rotatably connected to the inner side of the water tank at intervals. The cable passes above the supporting rollers to reduce the friction between the cable and the water tank. The water level in the water tank is higher than the supporting rollers, so that the sheath can be cooled by the cooling water.

[0004] The above cooling device has the following technical defects: the cable cannot be cooled in time after being extruded from the die head, and the part of the cable between the die head and the water tank is suspended, so that the sheath is prone to sag, resulting in high cable eccentricity and affecting the product quality. SUMMARY

[0005] In order to cool the sheath in time, the present application provides a cooling device for a cable extrusion production line.

[0006] The cooling device for a cable extrusion production line provided by the present application adopts the following technical scheme:

[0007] A cooling device for a cable extrusion production line comprises a support, a water tank connected to the upper end of the support, a water inlet pipe and a water outlet pipe connected to the water tank, a pre-cooling mechanism connected to one end of the water tank, the pre-cooling mechanism comprising a water return channel for the cable to pass through, a supporting strip connected to the upper end of the water return channel, a water guide plate connected to the upper end of the supporting strip, and a nozzle opposite to the water guide plate, the water return channel is inclined and the lower end is located inside the water tank, the water guide plate is symmetrically provided with two, the distance between the two water guide plates gradually increases in the direction away from the water return channel, a water guide gap is provided between the two water guide plates, the water guide gap is used to face the upper side of the cable, the water return channel is connected with a fixing frame, and the nozzle is provided with a plurality of nozzles connected with the fixing frame.

[0008] By adopting the above technical scheme, the pre-cooling mechanism is used to pre-cool the cable sheath in time, so that the sheath is preliminarily shaped and is not prone to sag, which is beneficial to reduce the cable eccentricity, and then the water tank is used for secondary cooling to ensure the cooling and shaping effect.

[0009] The pre-cooling mechanism adopts a water spraying mode, water is sprayed on the water guide plate through the spray head, flows to the water guide gap, falls on the upper side of the cable, and carries away the heat of the sheath to achieve cooling. Compared with the mode of spraying the spray head directly on the cable, this cooling mode is more moderate and is less likely to cause pits on the surface of the unformed sheath due to the impact force of water droplets, which is beneficial to improve the quality of the cable.

[0010] Optionally, a plurality of water guide grooves are arranged at intervals between the water guide plates, one end of the water guide grooves extending to the water guide gap and the other end being opposite to the spray head.

[0011] By adopting the above technical solution, the water flow flows along the water guide groove to the water guide gap, avoiding the situation that the water flow flows downward along the water guide plate to cause less water flow at the upper end of the water guide gap, and ensuring the pre-cooling effect.

[0012] Optionally, a plurality of limiting rollers are rotatably connected between the lower sides of the two water guide plates.

[0013] By adopting the above technical solution, the cable is limited by the limiting rollers and does not directly contact the water guide plate, avoiding that the water guide plate presses the cable sheath to leave marks, and further ensuring the quality of the cable.

[0014] Optionally, the water return channel is hingedly connected with the water tank, a water baffle is fixedly connected to the lower end of the water return channel, and an overflow port is arranged at the upper end of the water baffle.

[0015] By adopting the above technical solution, the lower end of the water return channel is filled with water when the production line is running, the upper end of the water return channel is lifted to the die outlet, so that the cable can enter the water return channel in time for pre-cooling; when the production line stops running, the water in the water return channel is drained, and at this time the upper end of the water return channel is lowered, so that the operation space at the die is increased to facilitate replacement of the die.

[0016] Optionally, the water tank is connected with a limiting frame located below the water return channel.

[0017] By adopting the above technical solution, the rotating position of the water return channel is limited.

[0018] Optionally, a water inlet ring is connected to the upper end edge of the water tank, a plurality of water inlet holes are arranged on the inner side of the water inlet ring, a water inlet pipe is connected with the water inlet ring, and a water outlet pipe is connected with the bottom of the water tank.

[0019] By adopting the above technical solution, the water inlet and outlet mode is beneficial to ensure the cooling effect of the upper side of the cable.

[0020] Optionally, the water tank is provided with a drying mechanism on the side away from the pre-cooling mechanism, the drying mechanism comprising a stand, a plurality of rotating rollers rotatably connected to the upper end of the stand, the rotating rollers being higher than the upper end of the water tank and used for supporting the cable, and the stand being connected with a drying piece, the drying piece being U-shaped and used for fitting the lower half of the cable.

[0021] By adopting the above technical scheme, after the cable is cooled by the water tank, the sheath surface is preliminarily wiped and dried by the drying piece, so as to reduce the water attached to the outer surface of the sheath, and then the efficiency of subsequent hot air drying is improved, so that the subsequent hot air drying line can be shortened or cooled, the energy consumption is reduced, and the energy saving and environmental protection concept is met.

[0022] Optionally, the drying piece is provided with two, and a hinged strip is fixedly connected between the two drying pieces, the middle part of the hinged strip being rotatably connected with the stand, and the hinged strip being slidingly connected with a counterweight.

[0023] By adopting the above technical scheme, when the weight of the drying piece after absorbing moisture is greater than the sum of the weight of the other drying piece and the counterweight, the drying piece after absorbing moisture is lowered, the other drying piece is moved upward to fit the cable sheath, and the counterweight is lowered to be close to the drying piece after absorbing moisture. The two drying pieces alternately dry the cable sheath to ensure the drying effect.

[0024] Optionally, the drying piece comprises a C-shaped bracket and a moisture absorption strip fixedly connected to the inner side of the C-shaped bracket, the lower side of the drying piece is provided with a trigger button fixedly connected with the stand, and the trigger button is electrically connected with a hot air fan.

[0025] When one of the drying pieces fits the cable, the other drying piece can press the trigger button and be directly opposite the corresponding hot air fan.

[0026] By adopting the above technical scheme, after the drying piece after absorbing moisture is lowered, the trigger button is pressed, the corresponding hot air fan works, and the drying of the drying piece is accelerated.

[0027] Optionally, a plurality of supporting rollers are rotatably connected inside the water tank.

[0028] By adopting the above technical scheme, the cable is supported to avoid friction between the cable and the bottom wall of the water tank.

[0029] In summary, the present application has the following beneficial effects:

[0030] 1. By providing the pre-cooling mechanism, the cable sheath is cooled in time, the sheath is preliminarily shaped and is not easy to sag, which is beneficial to reduce the cable eccentricity;

[0031] 2. With the setting of the drying mechanism, after the cable is water-cooled, the surface of the sheath is initially wiped dry to reduce the water adhering to the outer surface of the sheath, thereby improving the efficiency of subsequent hot air drying, so that the subsequent hot air drying line can be shortened or cooled down to reduce energy consumption. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of a cooling device for a cable extrusion production line according to an embodiment of this application;

[0033] Figure 2 This is a schematic diagram of the water tank and precooling mechanism according to an embodiment of this application;

[0034] Figure 3 yes Figure 2 Enlarged view of region A in the middle;

[0035] Figure 4 This is a schematic diagram of the structure of the return water channel, the guide plate, and the limiting roller according to an embodiment of this application;

[0036] Figure 5 This is a schematic diagram of the drying mechanism according to an embodiment of this application;

[0037] Figure 6 This is a schematic diagram of the structure of the hinge bar, drying component, counterweight, trigger button, and hot air fan according to an embodiment of this application.

[0038] Explanation of reference numerals in the attached drawings: 1. Bracket; 2. Water tank; 3. Inlet pipe; 4. Outlet pipe; 5. Pre-cooling mechanism; 51. Return water channel; 52. Support bar; 53. Water guide plate; 531. Water guide groove; 54. Nozzle; 55. Fixing frame; 56. Limiting roller; 57. Water baffle; 571. Overflow port; 58. Limiting frame; 6. Water guide gap; 7. Inlet ring; 71. Inlet hole; 8. Drying mechanism; 81. Stand; 82. Rotating roller; 83. Drying component; 831. C-shaped bracket; 832. Moisture-absorbing strip; 84. Hinge strip; 85. Counterweight; 86. Trigger button; 87. Hot air fan; 9. Support roller. Detailed Implementation

[0039] The following is in conjunction with the appendix Figures 1-6 This application will be described in further detail.

[0040] This application discloses a cooling device for a cable extrusion production line.

[0041] Reference Figure 1 A cooling device for a cable extrusion production line includes a support 1, with a water tank 2 fixedly connected to the upper end of the support 1. A pre-cooling mechanism 5 is installed at one end of the water tank 2, and a drying mechanism 8 is installed at the other end. After the cable is extruded from the die, it passes through the pre-cooling mechanism 5, the water tank 2, and the drying mechanism 8 in sequence to complete cooling, shaping, and preliminary drying before entering the drying line.

[0042] Reference Figure 1 , Figure 2 A U-shaped water inlet ring 7 is fixedly connected to the upper edge of the water tank 2. A water inlet pipe 3 is fixedly connected to the outside of the water inlet ring 7, and multiple water inlet holes 71 are spaced apart on the inside of the water inlet ring 7. After the water pipe is connected to the water inlet pipe 3, water flows into the water tank 2 along the water inlet pipe 3, the water inlet ring 7, and the water inlet holes 71, so that the water tank 2 is filled with water to facilitate water cooling of the cable. A water outlet pipe 4 is fixedly connected to one side of the bottom of the water tank 2, and water can be discharged from the water outlet pipe 4 to ensure continuous water flow during the cable cooling process and ensure the cooling effect. Multiple rollers 9 are rotatably connected at intervals along the length of the water tank 2. The cable is supported by the rollers 9 and will not contact the bottom wall of the water tank 2 to reduce wear on the outer surface of the cable.

[0043] Reference Figure 2 The precooling mechanism 5 includes a return water channel 51. The return water channel 51 has a C-shaped cross-section and its opening faces upward. The return water channel 51 is inclined, with its upper end close to the mold head and its lower end located inside the water tank 2, so that the cable enters the return water channel 51 before entering the water tank 2. The middle part of the return water channel 51 is hinged to the water tank 2, so that the return water channel 51 can rotate relative to the water tank 2.

[0044] Reference Figure 3 , Figure 4 A baffle plate 57 is fixedly connected to the lower end of the return water channel 51, and an overflow port 571 is provided at the upper end of the baffle plate 57. When water flows into the return water channel 51, the water flows down to the lower end of the return water channel 51, causing the lower end of the return water channel 51 to accumulate water and become heavier. The lower end of the return water channel 51 rotates close to the water tank 2 until it abuts the bottom wall of the water tank 2. At this time, the upper end of the return water channel 51 is directly facing the mold head, so that the cable can enter the return water channel 51 in time for pre-cooling.

[0045] Reference Figure 2 A limiting bracket 58 is fixedly connected to the water tank 2, and the limiting bracket 58 is located on the lower side of the end of the return water channel 51 away from the water tank 2. When the water inside the return water channel 51 is drained, the weight of the upper end of the return water channel 51 is slightly greater than that of the lower end, causing the upper end of the return water channel 51 to rotate downwards until the return water channel 51 abuts against the limiting bracket 58. At this point, the upper end of the return water channel 51 is misaligned with the mold head to facilitate mold head replacement. It should be noted that the return water channel 51 is always in an inclined state within the restricted rotation range.

[0046] Reference Figure 2 , Figure 4 Multiple support bars 52 are fixedly connected to both sides of the upper end of the return water channel 51. The upper ends of the multiple support bars 52 located in the same row are fixedly connected to water guide plates 53. The distance between the two water guide plates 53 gradually increases in the direction away from the return water channel 51, and a water guide gap 6 is provided between the two water guide plates 53.

[0047] With reference to Figure 2 , Figure 3 The water return channel 51 is fixedly connected with a fixing frame 55, the fixing frame 55 is fixedly connected with a water spraying pipe, and a plurality of nozzles 54 are fixedly connected to the water spraying pipe in a manner of being opposite to the water guide plate 53. After the water spraying pipe is connected to the faucet through a flexible water pipe, water is sprayed out of the nozzles 54 on the water guide plate 53 and flows to the water guide gap 6 and falls into the water return channel 51. After the cable is extruded from the die, the cable passes through the water return channel 51 and is opposite to the water guide gap 6, so that the water falling at the water guide gap 6 can take away the heat of the cable sheath, thereby playing a pre-cooling role. The two water guide plates 53 are rotationally connected with a limiting roller 56 at the lower side, and a plurality of limiting rollers 56 are arranged along the length direction of the water guide plate 53. The limiting roller 56 limits the cable, so that the cable does not directly contact the water guide plate 53, thereby avoiding that the water guide plate 53 presses the cable sheath to form a scratch, and further ensuring the quality of the cable.

[0048] With reference to Figure 3 , Figure 4 A plurality of water guide grooves 531 are arranged along the length direction of the water guide plate 53, and the water guide grooves 531 are arranged along the width direction of the water guide plate 53. One end of the water guide groove 531 extends to the water guide gap 6, and the other end is opposite to the nozzle 54, so that the water sprayed out of the nozzle 54 can smoothly flow to the water guide gap 6 along the water guide groove 531, thereby ensuring that the water flow at each position of the water guide gap 6 is uniform and improving the pre-cooling effect.

[0049] With reference to Figure 1 , Figure 5 The drying mechanism 8 includes a stand 81 arranged on the ground, and three rotating rollers 82 are rotationally connected to the upper end of the stand 81. The three rotating rollers 82 are arranged in a flush manner and are higher than the upper end of the water tank 2. The rotating rollers 82 are used to support the cable, so that the part of the cable located in the drying mechanism 8 is in a horizontal state. The stand 81 is connected with a hinged strip 84, the middle part of the hinged strip 84 is hinged to the stand 81, and the upper sides of the two ends of the hinged strip 84 are fixedly connected with drying pieces 83. The drying piece 83 is used to fit the lower half of the cable to play a wiping and drying role.

[0050] With reference to Figure 5 , Figure 6 The drying piece 83 includes a C-shaped bracket 831 fixedly connected with the hinged strip 84 and a moisture absorption strip 832 fixedly connected to the inner side of the C-shaped bracket 831. The C-shaped bracket 831 is made of steel, and the moisture absorption strip 832 is made of sponge material. The lower side of the hinged strip 84 is slidingly connected with a counterweight 85 along the length direction. When the counterweight 85 slides to one of the drying pieces 83, the drying piece 83 will rotate downward with the hinged strip 84 to be separated from the cable, and the other drying piece 83 will rotate upward to fit the cable.

[0051] The weight of the dry piece 83 attached to the cable increases after absorbing moisture, and when the weight of the dry piece 83 after absorbing moisture is greater than the sum of the weight of the other dry piece 83 and the weight of the counterweight 85, the dry piece 83 after absorbing moisture descends, while the other dry piece 83 moves up to attach to the cable sheath, and the counterweight 85 slides down to be close to the dry piece 83 after absorbing moisture. The two dry pieces 83 alternately dry the cable sheath to ensure drying effect.

[0052] Referring to Figure 5 、 Figure 6 In order to accelerate the dry piece 83 after absorbing moisture to restore the dry state so as to dry the cable again, the lower side of each dry piece 83 is provided with a trigger button 86, and the trigger button 86 is fixedly connected with the stand 81. The trigger button 86 is electrically connected with a hot fan 87, and the hot fan 87 is fixedly connected with the stand 81 and is opposite to the dry piece 83 pressing the trigger button 86. When one dry piece 83 is attached to the cable, the other dry piece 83 can press the trigger button 86 and be opposite to the corresponding hot fan 87. After the dry piece 83 after absorbing moisture moves down, the trigger button 86 is pressed, and the corresponding hot fan 87 works to accelerate the drying of the dry piece 83.

[0053] It should be noted that the hot fan 87 uses the electric heating method of heating air by heating wire in the prior art.

[0054] The implementation principle of the cooling device for the cable extrusion production line in the embodiment of the application is as follows:

[0055] After the cable is extruded from the die head, it first enters the water return channel 51 and is opposite to the water guide gap 6. The water sprayed by the spray head 54 flows along the water guide groove 531 to the water guide gap 6 and falls on the outer surface of the cable. After the water takes away the heat, it flows into the water tank 2 along the water return channel 51.

[0056] After the cable is pre-cooled, it enters the water tank 2, is placed on the upper side of the supporting roller 9 and is soaked in water, and then is rapidly cooled.

[0057] After the cable moves out of the water tank 2, it passes through the upper side of the supporting roller and uses the dry piece 83 to scrape most of the water on the outer surface of the cable, so as to realize preliminary drying and improve the efficiency of subsequent drying.

[0058] The above are preferred embodiments of the application, and do not limit the protection scope of the application. Therefore, any equivalent changes made on the basis of the structure, shape and principle of the application should be covered within the protection scope of the application.

Claims

1. A cooling device for a cable extrusion production line, comprising a support (1), wherein a water tank (2) is connected to the upper end of the support (1), and the water tank (2) is connected to an inlet pipe (3) and an outlet pipe (4), characterized in that: One end of the water tank (2) is connected to a precooling mechanism (5). The precooling mechanism (5) includes a return water channel (51) for the cable to pass through, a support bar (52) connected to the upper end of the return water channel (51), a water guide plate (53) connected to the upper end of the support bar (52), and a nozzle (54) facing the water guide plate (53). The return water channel (51) is inclined and its upper end is close to the mold head, and its lower end is located inside the water tank (2). There are two water guide plates (53) symmetrically arranged. The distance between the two water guide plates (53) gradually increases in the direction away from the return water channel (51). A water guide gap (6) is provided between the two water guide plates (53). The water guide gap (6) is used to face the upper side of the cable. The return water channel (51) is connected to a fixing frame (55). Multiple nozzles (54) are provided and connected to the fixing frame (55). The water guide plate (53) is provided with a plurality of water guide grooves (531) at intervals. One end of the water guide groove (531) extends to the water guide gap (6) and the other end is directly opposite the nozzle (54). Multiple limiting rollers (56) are rotatably connected between the lower sides of the two water guide plates (53); The return water channel (51) is hinged to the water tank (2), and a baffle plate (57) is fixedly connected to the lower end of the return water channel (51). An overflow port (571) is provided at the upper end of the baffle plate (57). A drying mechanism (8) is provided on the side of the water tank (2) away from the precooling mechanism (5). The drying mechanism (8) includes a stand (81) and a plurality of rotating rollers (82) rotatably connected to the upper end of the stand (81). The rotating rollers (82) are higher than the upper end of the water tank (2) and are used to support the cable. A drying component (83) is connected to the stand (81). The drying component (83) is U-shaped and is used to fit the lower half of the cable. Two drying components (83) are provided, and a hinge strip (84) is fixedly connected between the two drying components (83). The middle part of the hinge strip (84) is rotatably connected to the upright frame (81), and a counterweight (85) is slidably connected to the hinge strip (84). The drying component (83) includes a C-shaped bracket (831) and a moisture-absorbing strip (832) fixedly connected to the inside of the C-shaped bracket (831). A trigger button (86) fixedly connected to the stand (81) is provided on the lower side of the drying component (83). The trigger button (86) is electrically connected to a hot fan (87). When one of the drying elements (83) is attached to the cable, the other drying element (83) can press the trigger button (86) and face the corresponding hot air fan (87).

2. The cooling device for a cable extrusion production line according to claim 1, characterized in that: The water tank (2) is connected to a limiting bracket (58) located on the lower side of the return water channel (51).

3. The cooling device for a cable extrusion production line according to claim 1, characterized in that: The upper edge of the water tank (2) is connected to a water inlet ring (7), and multiple water inlet holes (71) are provided on the inner side of the water inlet ring (7). The water inlet pipe (3) is connected to the water inlet ring (7), and the water outlet pipe (4) is connected to the bottom of the water tank (2).

4. The cooling device for a cable extrusion production line according to claim 1, characterized in that: The water tank (2) is internally connected with multiple rollers (9) at intervals.

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