An easy-to-form cable extrusion processing line

Abstract

A cable extrusion processing line that is easy to form, including an extruder, a heater and a cooling line, the cooling line including a buffer chamber, a cooling water trough, a circulating water mechanism and a degassing mechanism; the buffer chamber includes a flared barrel section, a straight barrel section and an air duct; a plurality of conveying rollers are arranged in the cooling water trough along the cable conveying direction, the surface of the conveying roller is provided with at least one section of axial ridge extending from one end to the other end, the two ends of the cooling water trough in the cable conveying direction are provided with cable openings and the two ends are also respectively connected to the guide part; the circulating water mechanism includes a water inlet pipe, a water outlet pipe, a water storage tank and a water pump; the degassing mechanism includes a storage tank filled with degassing liquid, a liquid pipe connected to the storage tank at one end and connected to the water storage tank at the other end, and a pressure pump connected to the storage tank. The present invention has a simple structure, is easy to use, has an excellent overall cooling effect, and the surface of the obtained product is smooth and the quality is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of cable production, in particular to an easy-to-form cable extrusion processing line. Background Art

[0002] With the continuous expansion of the scale of China's power industry, data communication industry, urban rail transit industry, automobile industry and shipbuilding industry, the demand for wires and cables will also grow rapidly. In the future, the wire and cable industry still has huge development potential. In the processing of cables, including cable core manufacturing and sheath manufacturing, the cable core and sheath are generally formed together by a high-temperature extruder. Therefore, after extrusion, a certain degree of cooling is required, and sudden cooling should be prevented during cooling. At present, the cooling of the cable is to place the cable in a slot, and the slot is located in the cooling water, and the cable is cooled by cooling water. However, the effect of this cooling device is not ideal. Since the temperature of the cooling water will gradually increase during the long-term production of the cable, the cooling effect is getting worse and worse, which cannot meet the requirements of normal production and the product quality is poor. In addition, there are also improvements to the cooling device, using a circulating water spray method to further improve the cooling effect, but in actual production, it is still found that the resulting product has defects. The water that directly impacts the cable itself will have an adverse effect on the surface of the cable. In addition, bubbles will be generated on the surface of the cable during the cooling process, and the surface of the final product will be rough and even produce pits and bulges. Summary of the invention

[0003] The technical purpose of the present invention is to provide a cable extrusion processing line that is easy to shape, so as to solve the problem that the cooling effect of the traditional cooling method is not ideal and the quality of the obtained product is poor.

[0004] The specific technical scheme of the present invention is as follows: an easy-to-form cable extrusion processing line, comprising an extruder, a heater and a cooling line, wherein the cooling line comprises a buffer chamber, a cooling water trough, a circulating water mechanism and a degassing mechanism; the buffer chamber comprises an expanded barrel section connected to the extruder and covering the extrusion port of the extruder, a straight barrel section connected to the expanded barrel section and then docked with the cooling water trough, and an air duct for introducing hot air into the expanded barrel section and the straight barrel section, wherein the cross-sectional area of ​​the expanded barrel section increases as the distance between the cross section and the extruder increases, an end ventilation area is provided at the end of the expanded barrel section close to the extruder, the air duct is connected to the end ventilation area and introduces hot air into the inside, an end panel is provided on the straight barrel section, and a cable outlet is provided on the end panel; a plurality of conveying rollers are arranged at intervals in the cooling water trough along the cable conveying direction, and the surface of the conveying rollers It is provided with at least one axial ridge extending from one end to the other end, and the two ends of the cooling water trough in the cable transmission direction are provided with cable openings and the two ends are also respectively connected to the guiding parts; the circulating water mechanism comprises an inlet pipe, an outlet pipe, a water storage tank and a water pump, the inlet pipe and the outlet pipe are both connected to the water storage tank, the water pump is connected to the pipeline of the inlet pipe, the pipe mouth of the inlet pipe is attached to the two side walls of the cooling water trough perpendicular to the cable transmission direction, the pipe mouth of the inlet pipe vertically extends into the area between the bottom surface of the cooling water trough and the conveying roller and faces the bottom of the cooling water trough, and the bottom of the cooling water trough is provided with an outlet connected to the pipe mouth of the outlet pipe; the degassing mechanism comprises a storage tank filled with defoaming liquid, a liquid pipe connected to the storage tank at one end and the water storage tank at the other end, and a pressure pump connected to the storage tank.

[0005] Preferably, the inner wall of the flared barrel section located in the end ventilation area is connected to an anti-direct blowing baffle opposite to the inlet of the air duct to prevent hot air from directly blowing on the cable.

[0006] Preferably, the anti-direct blowing baffle is an arched plate and arches toward the position where the cable is located.

[0007] Preferably, the end panel is provided with air outlet holes communicating with the outside.

[0008] Preferably, the axial protrusion comprises a soft outer layer fixedly connected to the surface of the conveying roller and an elastic filler filled in the soft outer layer.

[0009] Preferably, the axial protrusion comprises a soft outer layer fixedly connected to the surface of the conveying roller and a filling liquid filled in the soft outer layer.

[0010] Preferably, the guiding part includes water receiving frames respectively connected to the two ends of the cooling water trough in the cable transmission direction, guiding grooves arranged on the frame wall of the water receiving frame opposite to the ends of the two ends of the cooling water trough, and guiding rollers arranged on the guiding grooves, and a water receiving outlet is provided at the bottom of the water receiving frame, and the water receiving outlet is connected to a water receiving return pipe, and the water receiving return pipe is connected to the water storage tank.

[0011] Preferably, a water reflux valve is provided on the water reflux pipe.

[0012] Preferably, a first defoaming liquid concentration sensor is provided in the cooling water tank, a second defoaming liquid concentration sensor is provided in the water reservoir, a flow regulating solenoid valve is provided on the liquid pipe, and the first defoaming liquid concentration sensor and the second defoaming liquid concentration sensor are both connected to the flow regulating solenoid valve.

[0013] Preferably, the cable passage is provided with a water-blocking sponge arranged around its inner annular surface.

[0014] Preferably, the water inlet pipe is provided with a water inlet valve, and the water outlet pipe is provided with a water outlet valve.

[0015] The technical advantage of the present invention is that the cable extrusion processing line that is easy to form is simple to set up and easy to use. The buffer chamber allows the newly extruded cable to pass through a good temperature transition section to avoid direct exposure to sudden cooling and affect the forming. The conveying roller causes the cable in transit to undergo periodic vertical shaking due to the existence of the axial ridge, which is easy to reduce bubbles on the cable surface, and cooperates with the degassing mechanism to further remove bubbles on the cable surface. In addition, when the cooling water is circulated and injected, it avoids direct impact on the cable itself and can stir the water from bottom to top and then to bottom, so that the bubbles can be easily brought out of the water surface in time. The overall cooling effect is excellent, the surface of the resulting product is smooth, and the quality is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0017] Figure 2 It is a schematic diagram of a local structure of an embodiment of the present invention;

[0018] Figure 3 It is a schematic diagram of a local structure of an embodiment of the present invention;

[0019] Figure 4 It is a schematic diagram of the local structure of an embodiment of the present invention. DETAILED DESCRIPTION

[0020] The present invention will be further described below by means of specific embodiments in conjunction with the accompanying drawings:

[0021] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , a cable extrusion processing line that is easy to form, including an extruder, a heater and a cooling line, the cooling line including a buffer chamber a, a cooling water tank 1, a circulating water mechanism and a degassing mechanism; the buffer chamber a includes an expanded barrel section a1 connected to the extruder and covering the extrusion port of the extruder, a straight barrel section a2 connected to the expanded barrel section a1 and then connected to the cooling water tank 1, and an air duct a3 for introducing hot air into the expanded barrel section a1 and the straight barrel section a2, the cross-sectional area of ​​the expanded barrel section a1 increases as the distance between the cross section and the extruder increases, the end of the expanded barrel section a1 close to the extruder is provided with an end ventilation area, the air duct a3 is connected to the end ventilation area and introduces hot air into the straight barrel section a2, an end panel a21 is provided on the straight barrel section a2, and a cable outlet is provided on the end panel a21; a plurality of conveying rollers 2 are arranged at intervals along the cable conveying direction in the cooling water tank 1, and the surface of the conveying roller 2 is provided with at least one section of axial protrusion 21 extending from one end to the other end thereof, which is more suitable The preferred number is one or two sections. The cooling water tank 1 is provided with cable openings at both ends in the cable transmission direction and the two ends are also connected to the guide parts respectively. The cable opening is provided with a water-blocking sponge 11 arranged around its own inner annular surface. The circulating water mechanism includes an inlet pipe 31, an outlet pipe 32, a water storage tank 3 and a water pump 33. The inlet pipe 31 and the outlet pipe 32 are both connected to the water storage tank 3. The water pump 33 is connected to the pipeline of the inlet pipe 31. The pipe of the inlet pipe 31 is connected to the outer wall of the cooling water tank 1. The outlet is attached to the two side walls of the cooling water trough 1 which are perpendicular to the cable conveying direction, the outlet of the water inlet pipe 31 extends vertically into the area between the bottom surface of the cooling water trough 1 and the conveying roller 2 and faces the bottom of the cooling water trough 1, and a water outlet connected to the outlet of the water outlet pipe 32 is opened at the bottom of the cooling water trough 1; the debubbling mechanism includes a storage tank 4 filled with defoaming liquid, a liquid pipe 41 connected to the storage tank 4 at one end and to the water tank 3 at the other end, and a pressure pump 42 connected to the storage tank 4. A first defoaming liquid concentration sensor is provided in the cooling water tank 1, a second defoaming liquid concentration sensor is provided in the water storage tank 3, and a flow regulating solenoid valve is provided on the liquid pipe 41. The first defoaming liquid concentration sensor and the second defoaming liquid concentration sensor are both connected to the flow regulating solenoid valve. Since the circulating water will be replaced after several rounds of circulation, the concentration of the defoaming liquid in the cooling water tank 1 will decrease. When the concentration of the defoaming liquid in the cooling water tank 1 and the concentration of the defoaming liquid in the water storage tank 3 are lower than the preset value, the flow regulating solenoid valve will be used to compare the concentrations of the two to regulate the defoaming liquid supply based on flow rate or flow.

[0022] The inner wall of the expanded barrel section a1 located in the end ventilation area is connected with an anti-direct blowing partition a11 which is opposite to the inlet of the air duct a3 and prevents the hot air from directly blowing the cable. The anti-direct blowing partition a11 is an arched plate and arches toward the position of the cable. The end panel a21 is provided with air outlet holes a22 communicating with the outside world. The anti-direct blowing partition a11 can be made of a plate with high thermal conductivity. Soft bristles or soft cloth are set on the cable outlet, which can be arranged in a circle, a curtain, etc., which has the function of supporting and blocking dust. The temperature of the hot air introduced into the air duct a3 is higher than the cooling temperature used by the cooling water tank 1, which can be selected at 90~100℃.

[0023] The axial protrusion 21 includes a soft outer layer fixedly connected to the surface of the conveying roller 2 and an elastic filler filled in the soft outer layer. In addition, the axial protrusion 21 can also be configured to include a soft outer layer fixedly connected to the surface of the conveying roller 2 and a filling liquid filled in the soft outer layer. When multiple axial protrusions 21 are provided, the heights of different axial protrusions 21 can be different or partially different, ensuring that the cable being conveyed can have a more obvious vertical shake and a more appropriate vertical shake amplitude, so as to effectively shake off the surface bubbles in the actual process.

[0024] The guide part includes a water receiving frame 5 connected to both ends of the cooling water tank 1 in the cable transmission direction, a guide slot 51 provided on the frame wall of the water receiving frame 5 opposite to the ends of the cooling water tank 1 at both ends, and a guide roller 52 provided on the guide slot 51. The bottom of the water receiving frame 5 is provided with a water receiving outlet, and the water receiving outlet is connected to a water receiving return pipe 34, and the water receiving return pipe 34 is connected to the water storage tank 3. A water receiving return valve is provided on the water receiving return pipe 34. Of course, a water inlet valve is also provided on the water inlet pipe 31, and a water outlet valve is also provided on the water outlet pipe 32.

Claims

1. An easily moldable cable extrusion processing line, comprising an extruder, a heater and a cooling line, characterized in that: The cooling line comprises a buffer chamber (a), a cooling water tank (1), a circulating water mechanism and a degassing mechanism; the buffer chamber (a) comprises an expanded barrel section (a1) connected to the extruder and covering the extrusion port of the extruder, a straight barrel section (a2) connected to the expanded barrel section (a1) and then docked with the cooling water tank (1), and an air duct (a3) ​​for introducing hot air into the expanded barrel section (a1) and the straight barrel section (a2); the cross-sectional area of ​​the expanded barrel section (a1) increases as the cross-sectional area increases with the cross-sectional area of ​​the extruder. The distance between the two ends increases as the distance increases; an end ventilation area is provided at the end of the flared barrel section (a1) close to the extruder; the air duct (a3) ​​is connected to the end ventilation area and introduces hot air into the end ventilation area; an end panel (a21) is provided on the straight barrel section (a2); a cable outlet is provided on the end panel (a21); a plurality of conveying rollers (2) are provided at intervals in the cooling water trough (1) along the cable conveying direction; the surface of the conveying roller (2) is provided with at least one axial protrusion (21) extending from one end to the other end thereof; The cooling water tank (1) is provided with cable openings at both ends in the direction of cable transmission, and the two ends are also respectively connected to guide parts; the circulating water mechanism comprises a water inlet pipe (31), a water outlet pipe (32), a water storage tank (3) and a water pump (33); the water inlet pipe (31) and the water outlet pipe (32) are both in communication with the water storage tank (3); the water pump (33) is connected to the pipeline of the water inlet pipe (31); the water inlet pipe (31) is provided on both side walls of the cooling water tank (1) perpendicular to the direction of cable transmission; The water inlet pipe (31) is arranged in a close connection, the pipe opening of the water inlet pipe (31) vertically extends into the area between the bottom surface of the cooling water trough (1) and the conveying roller (2) and faces the bottom of the cooling water trough (1), and the bottom of the cooling water trough (1) is provided with a water outlet connected to the pipe opening of the water outlet pipe (32); the degassing mechanism comprises a storage tank (4) filled with defoaming liquid, a liquid pipe (41) connected to the storage tank (4) at one end and connected to the water storage tank (3) at the other end, and a pressure pump (42) connected to the storage tank (4); The inner wall of the expanded barrel section (a1) located in the end ventilation area is connected to an anti-direct blowing baffle (a11) opposite to the inlet of the air duct (a3) ​​to prevent hot air from directly blowing on the cable; The end panel (a21) is provided with air outlet holes (a22) communicating with the outside.

2. The easily moldable cable extrusion processing line according to claim 1, characterized in that: The anti-direct blowing partition (a11) is an arched plate and arches toward the position where the cable is located.

3. The easily moldable cable extrusion processing line according to claim 1, characterized in that: The axial protrusion (21) comprises a soft outer layer fixedly connected to the surface of the conveying roller (2) and an elastic filler filled in the soft outer layer; or the axial protrusion (21) comprises a soft outer layer fixedly connected to the surface of the conveying roller (2) and a filling liquid filled in the soft outer layer.

4. The easily moldable cable extrusion processing line according to claim 1, characterized in that: The guide portion comprises a water receiving frame (5) respectively connected to the two ends of the cooling water trough (1) in the cable conveying direction, a guide slot (51) provided on a frame wall of the water receiving frame (5) opposite to the ends of the two ends of the cooling water trough (1), and a guide roller (52) provided on the guide slot (51); a water receiving outlet is provided at the bottom of the water receiving frame (5); the water receiving outlet is connected to a water receiving return pipe (34); and the water receiving return pipe (34) is connected to the water storage tank (3).

5. The easily moldable cable extrusion processing line according to claim 4, characterized in that: The water receiving and reflux pipe (34) is provided with a water receiving and reflux valve.

6. The easily moldable cable extrusion processing line according to claim 1, characterized in that: A first defoaming liquid concentration sensor is provided in the cooling water tank (1), a second defoaming liquid concentration sensor is provided in the water reservoir (3), a flow regulating solenoid valve is provided on the liquid passage pipe (41), and the first defoaming liquid concentration sensor and the second defoaming liquid concentration sensor are both connected to the flow regulating solenoid valve.

7. The easily moldable cable extrusion processing line according to claim 1, characterized in that: The cable passage is provided with a water-blocking sponge (11) arranged around its inner annular surface.

8. The easily moldable cable extrusion processing line according to claim 1, characterized in that: The water inlet pipe (31) is provided with a water inlet valve, and the water outlet pipe (32) is provided with a water outlet valve.

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