Communication cable insulation sheath manufacturing and shaping equipment and use method

Abstract

The invention discloses communication cable insulation sheath manufacturing and shaping equipment and a using method, the communication cable insulation sheath manufacturing and shaping equipment comprises an extrusion device and a shaping ring, the extrusion device comprises an extrusion ring and an extrusion blade group, and the extrusion blade group is connected with the right side surface of the extrusion ring in a bolt and nut matching mode; the extrusion blade set is composed of arc-shaped blades which are sequentially away from the extrusion ring, the radius of the extrusion blade set is the same as that of the extrusion ring, and the shaping ring is fixedly installed at the right end of the extrusion blade set. The extrusion ring is driven to rotate through the power set, the extrusion ring extrudes the moving molten insulating sheath, then the arc-shaped blades are driven to rotate to extrude the insulating sheath subjected to preliminary flattening again, meanwhile, through cooperation of the power set and the extrusion blade set, cooling liquid sequentially flows to the water outlet cavity from the fixing ring, and the cooling effect is improved. Overheating of the joint of the shaping equipment and the molten insulating sheath is prevented, the effect of adjusting the temperature of the contact surface of the shaping equipment is achieved, and cooling shaping of the molten insulating sheath is achieved.

Description

Technical Field

[0001] The present invention relates to the field of communication cables, and particularly to a manufacturing and shaping device for the insulating sheath of a communication cable and a usage method thereof. Background Art

[0002] The cable insulating protective sheath is formed by high-temperature compression molding of rubber materials, which has excellent electrical properties, is resistant to aging, high and low temperatures, can be used under various working conditions, and can effectively prevent power outages caused by human contact, electricity theft, small animals or sundries lapping, and chemical gas corrosion, thereby avoiding huge economic losses caused thereby. After high-temperature compression molding, the insulating sheath needs to be cooled and shaped to ensure the surface accuracy of the insulating sheath.

[0003] Through patent retrieval, the following known prior art solutions exist:

[0004] Application No.: CN202010768572.X, Application Date: August 3, 2020, Application Publication Date: November 3, 2020

[0005] The present invention relates to a manufacturing and cooling shaping device for the insulating sheath of a communication cable, including a base, a through ring, a motor, a cam, a scraping unit, a cooling unit, and an extrusion unit. A through ring is installed in the middle of the base, a motor is installed at the upper end of the through ring, a cam is installed on the output shaft of the motor, a scraping unit is installed at the left end of the through ring, a cooling unit is installed at the right end of the through ring, and an extrusion unit is installed inside the through ring. The present invention can solve the problems that since the outer surface of the freshly produced insulating sheath is still in a molten state, after it is sent into the cooling chamber, the outer surface of the cooled and shaped insulating sheath often appears uneven, and the outer diameter sizes of different positions of the insulating sheath are not uniform, which affects the quality and reduces the aesthetics.

[0006] The following problems may be encountered during the use of this existing device: The existing manufacturing and shaping devices for the insulating sheath of communication cables usually perform shaping after cooling, but the solidified insulating protective sheath is not easy to change its shape, and the shaping process is complex and difficult; the existing manufacturing and shaping devices for the insulating sheath of communication cables process the cooled insulating protective sheath by means of knife scraping, but usually can only scrape the raised parts on the outer surface of the insulating protective sheath, cannot fill the depressions on the outer surface, and the material loss is large, failing to reach the surface accuracy required for the insulating sheath.

[0007] Therefore, it is necessary to provide a manufacturing and shaping device for the insulating sheath of a communication cable to solve the above technical problems. Summary of the Invention

[0008] Technical Problems to be Solved

[0009] The purpose of the present invention is to provide a manufacturing and shaping device for a communication cable insulation sheath and its usage method, so as to solve the problems in the above-mentioned background technology. The existing cooling and shaping device for manufacturing a communication cable insulation sheath usually conducts shaping after cooling. However, the solidified insulation sheath is not easy to change its shape, and the shaping process is complex and difficult. The method of scraping with a knife is used to process the cooled insulation sheath, but usually it can only scrape the raised parts on the outer surface of the insulation sheath, and cannot fill the depressions on the outer surface, and the material loss is large, and the surface accuracy required for the insulation sheath cannot be achieved.

[0010] II. Technical Solution

[0011] To achieve the above purpose, the present invention provides the following technical solution: A manufacturing and shaping device for a communication cable insulation sheath, including an extrusion device and a shaping ring. The extrusion device includes an extrusion ring and an extrusion blade group. The extrusion blade group is connected to the right side of the extrusion ring by a bolt and nut cooperation method. The extrusion blade group is composed of arc-shaped blades that are successively away from the extrusion ring. The radius of the extrusion blade group is the same as the radius of the extrusion ring. The shaping ring is fixedly installed at the right end of the extrusion blade group, and the radius of the shaping ring is smaller than the radius of the extrusion blade group.

[0012] During specific operation, the insulation sheath moves towards the cooling chamber under the action of power. At the same time, the extrusion ring is driven to rotate by a power group. The extrusion ring extrudes the moving molten insulation sheath, and initially flattens the raised parts on the molten insulation sheath. Then, the extrusion ring drives the extrusion blade group to rotate, and further drives the arc-shaped blades to rotate to extrude the insulation sheath that has been initially flattened again. At the same time, the arc-shaped blades that are successively away from the extrusion ring, through the combined design concept, can move the molten insulation rubber extruded by the arc-shaped blade close to the extrusion ring forward under the action of power and transport it to the next arc-shaped blade for further flattening, and at the same time fill the depressions on the surface of the molten insulation rubber sheath. At the same time, the extrusion blade group drives the shaping ring to rotate synchronously to shape the surface of the molten insulation sheath, and shape the molten insulation sheath conveyed by the extrusion blade group to meet the required accuracy requirements.

[0013] As a further solution of the present invention, several extrusion devices are installed on the left side of the shaping ring. The extrusion devices are fixedly connected to each other, and the inner diameter of the extrusion devices decreases successively from left to right. The outer diameters of the extrusion devices are the same. The shaping ring is a hollow cavity, and the shaping ring is communicated with the extrusion blade group.

[0014] During specific operation, the extrusion device with an inner diameter decreasing successively from left to right is used to cooperate with the insulating sheath to move towards the cooling chamber under the action of power, so as to perform multi-stage extrusion and shaping on the molten insulating sheath. At the same time, as the inner diameter of the extrusion device decreases, the molten insulating rubber extruded from the arc-shaped blades close to the extrusion ring can be further transported to the next arc-shaped blade for flattening, and at the same time, the smaller depressions on the surface of the molten insulating rubber sheath are filled, achieving the effect of adjusting the precision of the outer surface of the insulating sheath. Meanwhile, through the connection relationship between the shaping ring and the extrusion blade group, the coolant is used to cool the extrusion blades and the shaping ring, achieving the effects of preventing the control device from overheating and cooling the molten insulating rubber.

[0015] As a further solution of the present invention, a fixed pipe evenly distributed along the axis of the extrusion ring is fixedly installed on the right side surface of the extrusion ring. The extrusion blade group includes a first blade, a second blade, a third blade, and a fourth blade. Connecting holes are opened at both the front and rear ends of the first blade, the second blade, the third blade, and the fourth blade. The fixed pipe located on the front side passes through the front connecting hole of the first blade and the front connecting hole of the fourth blade. The fixed pipe located on the lower side passes through the rear connecting hole of the first blade and the front connecting hole of the second blade. The fixed pipe located on the rear side passes through the rear connecting hole of the second blade and the rear connecting hole of the third blade. The fixed pipe located on the upper side passes through the front connecting hole of the third blade and the rear connecting hole of the fourth blade. The first blade, the second blade, the third blade, and the fourth blade are interconnected.

[0016] During specific operation, the position relationship between the extrusion ring and the extrusion blade group is fixed through the fixed pipe. At the same time, the circulation of the coolant can be realized through the cooperation relationship between the fixed pipe and the connecting hole.

[0017] As a further solution of the present invention, the extrusion ring is a hollow cavity. A communication hole is provided on the left end surface of the extrusion ring. The fixed pipe extends into the communication hole. The extrusion ring and the extrusion blade group are interconnected.

[0018] As a further solution of the present invention, ear seats are fixedly arranged on the outer circular surface of the extrusion ring. The ear seats are evenly distributed along the axial direction of the extrusion ring. A set of connecting screws is installed on the right side surface of the ear seats. The connecting screws are arranged on the opposite sides of the ear seats. Threaded holes are provided on the ear seats at intervals with the connecting screws. Fixed blocks are fixedly arranged on the outer circular surface of the shaping ring. The fixed blocks are evenly distributed along the circumferential direction of the shaping ring. Fixed holes are provided on the fixed blocks.

[0019] During specific operation, the connecting screw on the extrusion device on the left side is engaged with the threaded hole on the extrusion device connected to the right side to fix the positional relationship between the extrusion devices. Then, the connecting screw on the rightmost side is engaged with the fixing block on the shaping ring to fix the positional relationship between the extrusion device and the shaping ring. At the same time, the cooperation between the connecting screw and the threaded hole facilitates the combination and disassembly of the extrusion device, further realizing the control of the surface precision of the communication cable insulation sheath.

[0020] As a further solution of the present invention, a transmission device is provided on the upper side of the extrusion device. The transmission device includes an extrusion gear, a shaping gear, a transmission gear, a driving gear, a transmission shaft and a motor. The extrusion gear is fixedly installed on the left side surface of the extrusion ring far from the shaping ring. The extrusion gear is communicated with the extrusion ring. Above the extrusion gear, a transmission gear is arranged in a gear meshing and matching manner. The shaping gear is fixedly installed on the right side surface of the shaping ring. Above the shaping gear, a driving gear is arranged in a gear meshing and matching manner. The driving gear is connected to the transmission gear through the transmission shaft. The right end of the transmission shaft is rotatably connected to the output shaft of the motor.

[0021] During specific use, we found that since we need to combine or disassemble the extrusion device according to different precision requirements, when the extrusion device is disassembled or added, if the power source of the leftmost extrusion device only comes from the shaping ring, it is likely to cause insufficient stability of the device, resulting in device damage and being unfavorable for actual production. Therefore, it is designed that the motor drives the transmission shaft to rotate. The transmission shaft drives the transmission gear to rotate through the driving gear, and then drives the extrusion gear to rotate. The extrusion gear drives the extrusion device to rotate, and the extrusion device drives the shaping ring to rotate. At the same time, the transmission shaft drives the shaping gear to rotate through the driving gear, and then drives the shaping ring to rotate. The shaping ring drives the extrusion device to rotate. By the way of power driving the extrusion device and the shaping ring to synchronously transmit, the stability of the device is enhanced.

[0022] As a further solution of the present invention, transmission grooves evenly distributed along the circumferential direction of the transmission gear are arranged on the transmission shaft. A group of positioning holes are symmetrically arranged on both sides of the transmission shaft. The positioning holes and the transmission grooves are alternately distributed. Sliding protrusions matched with the transmission grooves are arranged in the transmission gear. A sliding block is fixedly installed on the right end surface of the transmission gear. A group of positioning pins are symmetrically arranged on both sides of the sliding block. One end of the positioning pin close to the axis of the transmission shaft is inserted into the positioning hole.

[0023] During actual use, we found that since we need to synchronously drive the extrusion device and the sizing ring through power, the extrusion device at the leftmost end will move in position due to the disassembly or combination of the extrusion device. Correspondingly, if a power source needs to be provided for the extrusion device at the leftmost end, the transmission gear should be able to slide accordingly. Therefore, a sliding protrusion of the transmission gear is designed to cooperate with a transmission groove on the transmission shaft for sliding, and at the same time, the transmission gear is fixed by the cooperation of a positioning pin and a positioning hole.

[0024] As a further solution of the present invention, a fixing ring is provided on the left side of the extrusion gear. Through grooves are uniformly arranged on the left end face of the extrusion gear along the circumferential direction of the extrusion gear. The fixing ring is a U-shaped shell. A rotating disk is provided on the left side of the fixing ring. A circular through hole is formed in the rotating disk. The rotating disk is rotatably arranged in the fixing ring. The rotating disk is communicated with the fixing ring. A support tube is fixedly installed on the right side face of the rotating disk. The support tubes are uniformly distributed along the circumferential direction of the fixing ring. A positioning ring is fixedly installed on the right side face of the rotating disk. The outer ring surface of the positioning ring is tangent to the outer circular surface of the support tube. The inner ring surface of the fixing ring is tangent to the outer circular surface of the support tube. One end of the support tube away from the fixing ring is fixedly installed in the through groove of the extrusion gear. The fixing ring is communicated with the extrusion gear. A water inlet is arranged on the outer circular surface of the fixing ring.

[0025] During actual use, we found that the extrusion device at the leftmost end will move in position due to the disassembly or combination of the extrusion device. Because of the design of the support tube fixedly connected to the extrusion gear, and the design of the positioning ring and the fixing ring tangent to the support tube, the support tube can rotate along the annular slideway formed by the support tube and the fixing ring, and at the same time can move left and right, which not only supports the extrusion device, but also limits the extrusion device at the leftmost end; at the same time, the communication relationship between the fixing ring, the rotating disk and the support tube enables the coolant to flow into the support tube from the water inlet, and then through the communication relationship between the support tube and the extrusion gear, the coolant flows to the extrusion gear.

[0026] As a further solution of the present invention, the sizing gear is a hollow cavity, the sizing gear is communicated with the sizing ring, a rotating tube is arranged on the right end face of the sizing gear, a water outlet cavity is arranged on the right side of the sizing gear, a connecting ring is rotatably connected to the right side of the water outlet cavity, the water outlet cavity is communicated with the connecting ring, the right end of the rotating tube is fixedly connected to the left end face of the connecting ring, a water outlet is arranged on the outer circular surface of the water outlet cavity, the water outlet cavity is fixedly installed on the lower wall of the shell, the right end of the motor is fixedly installed on the right side wall of the shell, the shell is placed on the existing working ground, the fixing ring is fixedly installed on the lower wall of the shell, the positioning column is fixedly installed on the lower wall of the shell, the right end of the motor is fixedly installed on the right side wall of the shell, and the shell is placed on the existing working ground.

[0027] During specific operation: through the communication relationship between the connecting ring and the water outlet cavity, the coolant flows from the fixed ring to the water outlet cavity in sequence, preventing overheating at the connection between the shaping device and the molten insulating sheath, achieving the effect of regulating the temperature of the contact surface of the shaping device; meanwhile, further cooling the molten insulating sheath, and the rotational cooling method makes the cooling speed relatively uniform, achieving the cooling and shaping of the molten insulating sheath.

[0028] Working principle: During specific operation, the insulating sheath moves towards the cooling chamber under the action of power. Meanwhile, the motor drives the transmission shaft to rotate. The transmission shaft drives the transmission gear to rotate through the driving gear, and then drives the extrusion gear to rotate. The extrusion gear drives the extrusion device to rotate, and the extrusion device drives the shaping ring to rotate. At the same time, the transmission shaft drives the shaping gear to rotate through the driving gear, and then drives the shaping ring to rotate. The shaping ring drives the extrusion ring to rotate. After the extrusion ring rotates, it extrudes the moving molten insulating sheath, and preliminarily flattens the protrusions on the molten insulating sheath. Then, the extrusion ring drives the extrusion blade group to rotate, and then drives the arc-shaped blades to rotate to extrude the preliminarily flattened insulating sheath again. At the same time, the arc-shaped blades successively away from the extrusion ring, through the combined design concept, can move the molten insulating rubber extruded by the arc-shaped blades close to the extrusion ring forward under its power and transport it to the next arc-shaped blade for further flattening and filling the depressions on the surface of the molten insulating rubber sheath. Then, the extrusion blade group drives the shaping ring to rotate synchronously to perform shaping treatment on the surface of the molten insulating sheath, and shape the molten insulating sheath conveyed by the extrusion blade group to meet the required precision requirements.

[0029] Three beneficial effects

[0030] 1. For the shaping device for manufacturing the insulating sheath of a communication cable described in the present invention, the present invention drives the extrusion ring to rotate through the power group. The extrusion ring extrudes the moving molten insulating sheath, and preliminarily flattens the protrusions on the molten insulating sheath. Then, the extrusion ring drives the extrusion blade group to rotate, and then drives the arc-shaped blades to rotate to extrude the preliminarily flattened insulating sheath again. At the same time, the arc-shaped blades successively away from the extrusion ring, through the combined design concept, can move the molten insulating rubber extruded by the arc-shaped blades close to the extrusion ring forward under its power and transport it to the next arc-shaped blade for further flattening and filling the depressions on the surface of the molten insulating rubber sheath, without material loss. At the same time, the extrusion blade group drives the shaping ring to rotate synchronously to perform shaping treatment on the surface of the molten insulating sheath, and shape the molten insulating sheath conveyed by the extrusion blade group to meet the required precision requirements;

[0031] 2. The shaping equipment for manufacturing the insulating sheath of a communication cable according to the present invention uses an extrusion device with an inner diameter decreasing from left to right. In cooperation with the movement of the insulating sheath under the action of power towards the cooling chamber, multi-stage extrusion shaping is performed on the molten insulating sheath. At the same time, as the inner diameter of the extrusion device decreases, the molten insulating rubber extruded by the arc-shaped blades near the extrusion ring can be further transported to the next arc-shaped blade for flattening, and at the same time, the smaller depressions on the surface of the molten insulating rubber sheath are filled, achieving the effect of adjusting the accuracy of the outer surface of the insulating sheath.

[0032] 3. The shaping equipment for manufacturing the insulating sheath of a communication cable according to the present invention realizes the sequential flow of the coolant from the fixed ring to the water outlet cavity through the connection relationship among the fixed ring, the rotating disk, the support tube, the extrusion gear, the extrusion ring, the extrusion blade group, the shaping ring, the shaping gear, the rotating tube, the connecting ring, and the water outlet cavity, preventing overheating at the connection between the shaping equipment and the molten insulating sheath, achieving the effect of adjusting the temperature of the contact surface of the shaping equipment; at the same time, further cooling the molten insulating sheath, and the rotational cooling method makes the cooling speed more uniform, achieving the cooling and shaping of the molten insulating sheath. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention will be further described below with reference to the drawings and embodiments.

[0034] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0035] Figure 2 is a front view structural schematic diagram of the present invention;

[0036] Figure 3 is a top view structural schematic diagram of the present invention;

[0037] Figure 4 is a structural schematic diagram of the extrusion device of the present invention;

[0038] Figure 5 is a top view structural schematic diagram of the extrusion device of the present invention;

[0039] Figure 6 is a structural schematic diagram between the transmission shaft and the transmission gear of the present invention;

[0040] Figure 7 is the present invention Figure 3 magnified structural schematic diagram at position A;

[0041] Figure 8 is a left view structural schematic diagram of the transmission gear of the present invention

[0042] Figure 9 is a structural schematic diagram between the rotating disk and the support tube of the present invention;

[0043] Figure 10It is a schematic structural diagram between the sizing ring and the sizing gear of the present invention;

[0044] Figure 11 It is a schematic structural diagram between the extrusion ring and the sizing gear of the present invention;

[0045] Figure 12 It is a left view of the extrusion gear of the present invention.

[0046] In the figure: 1. Extrusion device; 2. Sizing ring; 3. Ear seat; 4. Transmission device; 5. Fixed ring; 6. Rotating disk; 7. Shell; 8. Water outlet cavity; 9. Connecting ring; 11. Extrusion ring; 12. Extrusion blade group; 111. Fixed pipe; 112. Communication hole; 121. First blade; 122. Second blade; 123. Third blade; 124. Fourth blade; 125. Connecting hole; 31. Connecting screw; 32. Threaded hole; 33. Fixed block; 34. Fixed hole; 41. Extrusion gear; 411. Through groove; 42. Sizing gear; 43. Transmission gear; 44. Driving gear; 45. Transmission shaft; 46. Motor; 421. Rotating pipe; 451. Transmission groove; 452. Positioning hole; 453. Sliding protrusion; 454. Sliding block; 455. Positioning pin; 51. Water inlet; 61. Circular through hole; 62. Support pipe; 63. Positioning ring; 81. Water outlet. Detailed implementation manners

[0047] The embodiments of the present invention will be described below with reference to the accompanying drawings. During this process, to ensure the clarity and convenience of the description, we may exaggerate the widths of the lines or the sizes of the components in the drawings.

[0048] In addition, the terms used below are defined based on the functions in the present invention and may vary according to the intentions or conventions of users and operators. Therefore, these terms are defined based on the entire content of this specification.

[0049] As Figures 1 to 10 shown, a sizing device for manufacturing a communication cable insulating sheath includes an extrusion device 1 and a sizing ring 2. The extrusion device 1 includes an extrusion ring 11 and an extrusion blade group 12. The extrusion blade group 12 is connected to the right side surface of the extrusion ring 11 by a bolt and nut cooperation method. The extrusion blade group 12 is composed of arc-shaped blades successively away from the extrusion ring 11. The radius of the extrusion blade group 12 is the same as the radius of the extrusion ring 11. The sizing ring 2 is fixedly installed at the right end of the extrusion blade group 12. The radius of the sizing ring 2 is smaller than the radius of the extrusion blade group 12.

[0050] During specific operation, the insulating sheath moves towards the cooling chamber under the action of power. Meanwhile, the extrusion ring 11 is driven to rotate by the power group. The extrusion ring 11 extrudes the moving molten insulating sheath, initially flattening the protrusions on the molten insulating sheath. Then, the extrusion blade group 12 is driven to rotate by the extrusion ring 11, and further drives the arc-shaped blades to rotate to extrude the preliminarily flattened insulating sheath again. At the same time, the arc-shaped blades successively away from the extrusion ring 11, through the combined design concept, can move the molten insulating rubber extruded by the arc-shaped blades close to the extrusion ring 11 forward under the action of power and transport it to the next arc-shaped blade for further flattening, while filling the depressions on the surface of the molten insulating rubber sheath. At the same time, the extrusion blade group 12 drives the shaping ring 2 to rotate synchronously to shape the surface of the molten insulating sheath, and by shaping the molten insulating sheath conveyed by the extrusion blade group 12, the required precision requirements are achieved.

[0051] As a further solution of the present invention, for a communication cable insulating sheath manufacturing and shaping device according to claim 1, it is characterized in that: a plurality of extrusion devices 1 are installed on the left side of the shaping ring 2. The extrusion devices 1 are fixedly connected to each other, and the inner diameter of the extrusion devices 1 decreases successively from left to right. The outer diameters of the extrusion devices 1 are the same. The shaping ring 2 is a hollow cavity, and the shaping ring 2 is communicated with the extrusion blade group 12.

[0052] During specific operation, through the extrusion devices 1 with only the inner diameter decreasing successively from left to right, in cooperation with the movement of the insulating sheath towards the cooling chamber under the action of power, multi-stage extrusion and shaping of the molten insulating sheath are carried out. At the same time, as the inner diameter of the extrusion device 1 decreases, the molten insulating rubber extruded by the arc-shaped blades close to the extrusion ring 11 can be further transported to the next arc-shaped blade for flattening, while filling the smaller depressions on the surface of the molten insulating rubber sheath, achieving the effect of adjusting the precision of the outer surface of the insulating sheath.

[0053] As a further solution of the present invention, a fixed tube 111 evenly distributed along the axis of the extrusion ring 11 is fixedly installed on the right side surface of the extrusion ring 11. The extrusion blade group 12 includes a first blade 121, a second blade 122, a third blade 123, and a fourth blade 124. Connecting holes 125 are formed at both the front and rear ends of the first blade 121, the second blade 122, the third blade 123, and the fourth blade 124. The fixed tube 111 located on the front side passes through the front connecting hole 125 of the first blade 121 and the front connecting hole 125 of the fourth blade 124. The fixed tube 111 located on the lower side passes through the rear connecting hole 125 of the first blade 121 and the front connecting hole 125 of the second blade 122. The fixed tube 111 located on the rear side passes through the rear connecting hole 125 of the second blade 122 and the rear connecting hole 125 of the third blade 123. The fixed tube 111 located on the upper side passes through the front connecting hole 125 of the third blade 123 and the rear connecting hole 125 of the fourth blade 124. The first blade 121, the second blade 122, the third blade 123, and the fourth blade 124 communicate with each other.

[0054] As a further solution of the present invention, the extrusion ring 11 is a hollow cavity. A communication hole 112 is provided on the left end surface of the extrusion ring 11. The fixed tube 111 extends into the communication hole 112. The extrusion ring 11 and the extrusion blade group 12 communicate with each other.

[0055] During specific operation, the positional relationship between the extrusion ring 11 and the extrusion blade group 12 is fixed through the fixed tube 111. Meanwhile, the extrusion ring 11 and the extrusion blade group 12 can be replaced by adjusting the screw.

[0056] As a further solution of the present invention, ear seats 3 are fixedly arranged on the outer circumferential surface of the extrusion ring 11. The ear seats 3 are evenly distributed along the axial direction of the extrusion ring 11. A set of connecting screws 31 are installed on the right side surface of the ear seats 3. The connecting screws 31 are arranged on the opposite sides of the ear seats 3. Threaded holes 32 are arranged on the ear seats 3 at intervals with the connecting screws 31. Fixed blocks 33 are fixedly arranged on the outer circumferential surface of the shaping ring 2. The fixed blocks 33 are evenly distributed along the circumferential direction of the shaping ring 2. Fixing holes 34 are provided on the fixed blocks 33.

[0057] During specific operation, the connecting screw 31 on the extrusion device 1 on the left is engaged with the threaded hole 32 on the extrusion device 1 connected to the right to fix the positional relationship between the extrusion devices 1. Then, the connecting screw 31 on the rightmost side is engaged with the fixing block 33 on the shaping ring 2 to fix the positional relationship between the extrusion device 1 and the shaping ring 2. Meanwhile, the cooperation between the connecting screw 31 and the threaded hole 32 facilitates the combination and disassembly of the extrusion device 1, further realizing the control of the surface accuracy of the communication cable insulating sheath.

[0058] As a further solution of the present invention, a transmission device 4 is provided on the upper side of the extrusion device 1. The transmission device 4 includes an extrusion gear 41, a shaping gear 42, a transmission gear 43, a driving gear 44, a transmission shaft 45 and a motor 46. The extrusion gear 41 is fixedly installed on the left side surface of the extrusion ring 11 away from the shaping ring 2. The extrusion gear 41 is communicated with the extrusion ring 11. The transmission gear 43 is arranged above the extrusion gear 41 in a gear meshing and matching manner. The shaping gear 42 is fixedly installed on the right side surface of the shaping ring 2. The driving gear 44 is arranged above the shaping gear 42 in a gear meshing and matching manner. The driving gear 44 and the transmission gear 43 are connected by the transmission shaft 45. The right end of the transmission shaft 45 is rotatably connected to the output shaft of the motor 46.

[0059] During specific use, we found that since we need to combine or disassemble the extrusion device 1 according to different accuracy requirements, when the extrusion device 1 is disassembled or added, if the power source of the leftmost extrusion device 1 only comes from the shaping ring 2, it is likely to cause insufficient stability of the device, resulting in device damage and being unfavorable for actual production. Therefore, it is designed that the motor 46 drives the transmission shaft 45 to rotate. The transmission shaft 45 drives the transmission gear 43 to rotate through the driving gear 44, and then drives the extrusion gear 41 to rotate. The extrusion gear 41 drives the extrusion device 1 to rotate, and the extrusion device 1 drives the shaping ring 2 to rotate. At the same time, the transmission shaft 45 drives the shaping gear 42 to rotate through the driving gear 44, and then drives the shaping ring 2 to rotate. The shaping ring 2 drives the extrusion device 1 to rotate. By the way of power driving the extrusion device 1 and the shaping ring 2 to synchronously transmit, the stability of the device is enhanced.

[0060] As a further solution of the present invention, the transmission shaft 45 is provided with transmission grooves 451 evenly distributed along the circumferential direction of the transmission gear 43. A set of positioning holes 452 are symmetrically arranged on both sides of the transmission shaft 45. The positioning holes 452 and the transmission grooves 451 are arranged alternately. The transmission gear 43 is internally provided with sliding protrusions 453 matched with the transmission grooves 451. A sliding block 454 is fixedly installed on the right end surface of the transmission gear 43. A set of positioning pins 455 are symmetrically arranged on both sides of the sliding block 454. One end of the positioning pin 455 close to the axis of the transmission shaft 45 is inserted into the positioning hole 452.

[0061] In actual use, we found that since we need to drive the extrusion device 1 and the sizing ring 2 to synchronously transmit power, the leftmost extrusion device 1 will move in position due to the disassembly or combination of the extrusion device 1. Correspondingly, if a power source needs to be provided for the leftmost extrusion device 1, the transmission gear 43 should be able to slide accordingly. Therefore, a sliding protrusion 453 of the transmission gear 43 is designed to cooperate with a transmission groove 451 on the transmission shaft 45 for sliding, and at the same time, the transmission gear 43 is fixed by the cooperation of a positioning pin 455 and a positioning hole 452.

[0062] As a further solution of the present invention, a fixing ring 5 is provided on the left side of the extrusion gear 41. Through grooves 411 are uniformly arranged on the left end face of the extrusion gear 41 along the circumferential direction of the extrusion gear. The fixing ring 5 is a U-shaped housing. A rotating disk 6 is provided on the left side of the fixing ring 5. A circular through hole 61 is formed in the rotating disk 6. The rotating disk 6 is rotatably arranged in the fixing ring 5. The rotating disk 6 communicates with the fixing ring 5. A support pipe 62 is fixedly installed on the right side surface of the rotating disk 6. The support pipes 62 are uniformly distributed along the circumferential direction of the fixing ring 5. A positioning ring 63 is fixedly installed on the right side surface of the rotating disk 6. The outer ring surface of the positioning ring 63 is tangent to the outer circular surface of the support pipe 62. The inner ring surface of the fixing ring 5 is tangent to the outer circular surface of the support pipe 62. One end of the support pipe 62 away from the fixing ring 5 is fixedly installed in the through groove 411 of the extrusion gear 41. The fixing ring 5 communicates with the extrusion gear 41. A water inlet 51 is provided on the outer circular surface of the fixing ring 5.

[0063] In actual use, we found that the leftmost extrusion device 1 will move in position due to the disassembly or combination of the extrusion device 1. Because the support pipe 62 fixedly connected to the extrusion gear 41 is designed, and the positioning ring 63 and the fixing ring 5 tangent to the support pipe 62 are designed, the support pipe 62 can rotate along the annular slideway formed by the support pipe 62 and the fixing ring 5 and can also move left and right, which not only supports the extrusion device 1 but also limits the leftmost extrusion device 1. At the same time, the communication relationship among the fixing ring 5, the rotating disk 6 and the support pipe 62 enables the coolant to flow into the support pipe 62 from the water inlet 51, and then through the communication relationship between the support pipe 62 and the extrusion gear 41, the coolant flows to the extrusion gear 41.

[0064] As a further solution of the present invention, the shaping gear 42 is a hollow cavity, the shaping gear 42 is communicated with the shaping ring 2, a rotating pipe 421 is arranged on the right end face of the shaping gear 42, a water outlet cavity 8 is arranged on the right side of the shaping gear 42, a connecting ring 9 is rotatably connected to the right side of the water outlet cavity 8, the water outlet cavity 8 is communicated with the connecting ring 9, the right end of the rotating pipe 421 is fixedly connected to the left end face of the connecting ring 9, a water outlet 81 is arranged on the outer circumferential surface of the water outlet cavity 8, the water outlet cavity 8 is fixedly installed on the lower inner wall of the housing 7, the right end of the motor 46 is fixedly installed on the right side wall inside the housing 7, and the housing 7 is placed on the existing working ground.

[0065] During specific operation: due to the communication relationship between the connecting ring 9 and the water outlet cavity 8, the coolant flows from the fixed ring 5 to the water outlet cavity 8 in sequence, preventing overheating at the connection between the shaping device and the molten insulating sheath, achieving the effect of adjusting the temperature of the contact surface of the shaping device; meanwhile, further cooling the molten insulating sheath, and the rotational cooling method makes the cooling speed relatively uniform, achieving the cooling and shaping of the molten insulating sheath.

[0066] As a further solution of the present invention, a method for manufacturing and shaping an insulating sheath of a communication cable is as follows:

[0067] S1. Preliminary shaping: By driving the extrusion ring 11 to rotate through power, the molten insulating rubber extruded from the arc-shaped blades near the extrusion ring 11 is conveyed to the extrusion blade group 12.

[0068] S2. Flattening treatment: The molten insulating rubber passing through the extrusion blade group 12 is flattened by the continuous arc-shaped blades and fills the smaller depressions on the surface of the molten insulating rubber sheath.

[0069] S3. Precision adjustment: Through a plurality of extrusion devices 1 with gradually decreasing inner diameters from left to right, and in cooperation with the movement of the insulating sheath towards the cooling chamber under the action of power, multi-stage extrusion shaping of the molten insulating sheath is performed.

[0070] S4. Shaping and output: The shaped insulating sheath is output through the shaping ring 12.

[0071] Working principle: During specific operation, the insulating sheath moves towards the cooling chamber under the action of power. Meanwhile, the drive shaft 45 is driven to rotate by the motor 46. The drive shaft 45 drives the transmission gear 43 to rotate through the driving gear 44, thereby driving the extrusion gear 41 to rotate. The extrusion gear 41 drives the extrusion device 1 to rotate, and the extrusion device 1 drives the shaping ring 2 to rotate. At the same time, the drive shaft 45 drives the shaping gear 42 to rotate through the driving gear 44, thereby driving the shaping ring 2 to rotate, and the shaping ring 2 drives the extrusion ring 11 to rotate. After the extrusion ring 11 rotates, it extrudes the moving molten insulating sheath and further extrudes the insulating sheath with the rotating pair on the molten insulating sheath preliminarily flattened. At the same time, the arc-shaped blades successively away from the extrusion ring 11, through the combined design concept, can move the molten insulating rubber extruded by the arc-shaped blades near the extrusion ring 11 forward under the action of power and transport it to the next arc-shaped blade for further flattening and filling the depressions on the surface of the molten insulating rubber sheath. At the same time, through multiple extrusion devices 1 with successively decreasing inner diameters from left to right, cooperating with the movement of the insulating sheath towards the cooling chamber under the action of power, multi-stage extrusion and shaping of the molten insulating sheath are carried out. At the same time, as the inner diameter of the extrusion device 1 decreases, the molten insulating rubber extruded by the arc-shaped blades near the extrusion ring 11 can be further transported to the next arc-shaped blade for flattening and filling the smaller depressions on the surface of the molten insulating rubber sheath. After that, the extrusion blade group 12 drives the shaping ring 2 to rotate synchronously to perform shaping treatment on the surface of the molten insulating sheath. By shaping the molten insulating sheath conveyed by the extrusion blade group 12, the required precision requirements are achieved. At the same time, through the communication relationship among the fixed ring 5, the rotating disk 6, the support pipe 62, the extrusion gear 41, the extrusion ring 11, the extrusion blade group 12, the shaping ring 2, the shaping gear 42, the rotating pipe 421, the connecting ring 9 and the water outlet cavity 8, the coolant flows from the fixed ring 5 to the water outlet cavity 8 in sequence, preventing overheating at the connection between the shaping device and the molten insulating sheath and achieving the effect of adjusting the temperature of the contact surface of the shaping device. At the same time, the molten insulating sheath is further cooled, and the rotational cooling method makes the cooling speed relatively uniform, achieving the cooling and shaping of the molten insulating sheath.

[0072] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A shaping device for manufacturing an insulating sheath of a communication cable, comprising an extrusion device (1) and a shaping ring (2), characterized in that: The extrusion device (1) includes an extrusion ring (11) and an extrusion blade group (12). The extrusion blade group (12) is connected to the right side surface of the extrusion ring (11) by a bolt and nut cooperation method. The extrusion blade group (12) is composed of arc-shaped blades that successively move away from the extrusion ring (11). The radius of the extrusion blade group (12) is the same as the radius of the extrusion ring (11). The shaping ring (2) is fixedly installed at the right end of the extrusion blade group (12), and the radius of the shaping ring (2) is smaller than the radius of the extrusion blade group (12).

2. The shaping device for manufacturing the insulating sheath of a communication cable according to claim 1, wherein: A number of extrusion devices (1) are installed on the left side of the shaping ring (2). The extrusion devices (1) are fixedly connected to each other, and the inner diameter of the extrusion devices (1) decreases successively from left to right. The outer diameters of the extrusion devices (1) are the same. The shaping ring (2) is a hollow cavity, and the shaping ring (2) is communicated with the extrusion blade group (12).

3. The shaping device for manufacturing the insulating sheath of a communication cable according to claim 1, characterized in that: A fixed pipe (111) evenly distributed along the axis of the extrusion ring (11) is fixedly installed on the right side surface of the extrusion ring (11). The extrusion blade group (12) includes a first blade (121), a second blade (122), a third blade (123), and a fourth blade (124). Connecting holes (125) are provided at both the front and rear ends of the first blade (121), the second blade (122), the third blade (123), and the fourth blade (124). The fixed pipe (111) located at the front side passes through the front connecting hole (125) of the first blade (121) and the front connecting hole (125) of the fourth blade (124). The fixed pipe (111) located at the lower side passes through the rear connecting hole (125) of the first blade (121) and the front connecting hole (125) of the second blade (122). The fixed pipe (111) located at the rear side passes through the rear connecting hole (125) of the second blade (122) and the rear connecting hole (125) of the third blade (123). The fixed pipe (111) located at the upper side passes through the front connecting hole (125) of the third blade (123) and the rear connecting hole (125) of the fourth blade (124). The first blade (121), the second blade (122), the third blade (123), and the fourth blade (124) are communicated with each other.

4. A shaping device for manufacturing an insulating sheath of a communication cable according to claim 1, characterized in that: The extrusion ring (11) is a hollow cavity. A communication hole (112) is provided on the left end surface of the extrusion ring (11). The fixed pipe (111) extends into the communication hole (112). The extrusion ring (11) is communicated with the extrusion blade group (12).

5. A shaping device for manufacturing a communication cable insulating sheath according to claim 1, characterized in that: An ear seat (3) is fixedly arranged on the outer circumferential surface of the extrusion ring (11). The ear seats (3) are evenly distributed along the axial direction of the extrusion ring (11). A set of connecting screws (31) are installed on the right side surface of the ear seat (3). The connecting screws (31) are arranged on the opposite sides of the ear seat (3). Threaded holes (32) are arranged on the ear seat (3) at intervals with the connecting screws (31). A fixing block (33) is fixedly arranged on the outer circumferential surface of the shaping ring (2). The fixing blocks (33) are evenly distributed along the circumferential direction of the shaping ring (2). Fixing holes (34) are arranged on the fixing blocks (33).

6. The shaping device for manufacturing an insulating sheath of a communication cable according to claim 1, wherein: A transmission device (4) is arranged on the upper side of the extrusion device (1). The transmission device (4) includes an extrusion gear (41), a shaping gear (42), a transmission gear (43), a driving gear (44), a transmission shaft (45) and a motor (46). The extrusion gear (41) is fixedly installed on the left side surface of the extrusion ring (11) far away from the shaping ring (2). The extrusion gear (41) is communicated with the extrusion ring (11). A transmission gear (43) is arranged above the extrusion gear (41) in a gear meshing and matching manner. The shaping gear (42) is fixedly installed on the right side surface of the shaping ring (2). A driving gear (44) is arranged above the shaping gear (42) in a gear meshing and matching manner. The driving gear (44) and the transmission gear (43) are connected by a transmission shaft (45). The right end of the transmission shaft (45) is fixedly connected with the output shaft of the motor (46).

7. The shaping device for manufacturing the insulating sheath of a communication cable according to claim 6, characterized in that: A transmission groove (451) is arranged on the transmission shaft (45) and is evenly distributed along the circumferential direction of the transmission gear (43). A set of positioning holes (452) are symmetrically arranged on both sides of the transmission shaft (45). The positioning holes (452) are arranged at intervals with the transmission groove (451). A sliding protrusion (453) matched with the transmission groove (451) is arranged in the transmission gear (43). A sliding block (454) is fixedly installed on the right end surface of the transmission gear (43). A set of positioning pins (455) are symmetrically arranged on both sides of the sliding block (454). One end of the positioning pin (455) close to the axis of the transmission shaft (45) is inserted into the positioning hole (452).

8. The shaping device for manufacturing an insulating sheath of a communication cable according to claim 6, wherein: A fixing ring (5) is arranged on the left side of the extrusion gear (41). Through grooves (411) are uniformly arranged on the left end face of the extrusion gear (41) along the circumferential direction of the extrusion gear (41). The fixing ring (5) is a U-shaped shell. A rotating disk (6) is arranged on the left side of the fixing ring (5). A circular through hole (61) is formed in the rotating disk (6). The rotating disk (6) is rotatably arranged in the fixing ring (5). The rotating disk (6) communicates with the fixing ring (5). A support pipe (62) is fixedly installed on the right side face of the rotating disk (6). The support pipes (62) are uniformly distributed along the circumferential direction of the fixing ring (5). A positioning ring (63) is fixedly installed on the right side face of the rotating disk (6). The outer ring face of the positioning ring (63) is tangent to the outer circular face of the support pipe (62). The inner ring face of the fixing ring (5) is tangent to the outer circular face of the support pipe (62). One end of the support pipe (62) far away from the fixing ring (5) is fixedly installed in the through groove (411) of the extrusion gear (41). The fixing ring (5) communicates with the extrusion gear (41). A water inlet (51) is arranged on the outer circular face of the fixing ring (5).

9. The shaping device for manufacturing the insulating sheath of a communication cable according to claim 6, characterized in that: The shaping gear (42) is a hollow cavity. The shaping gear (42) communicates with the shaping ring (2). A rotating pipe (421) is arranged on the right end face of the shaping gear (42). A water outlet cavity (8) is arranged on the right side of the shaping gear (42). A connecting ring (9) is rotatably connected to the right side of the water outlet cavity (8). The water outlet cavity (8) communicates with the connecting ring (9). The right end of the rotating pipe (421) is fixedly connected to the left end face of the connecting ring (9). A water outlet (81) is arranged on the outer circular face of the water outlet cavity (8). The water outlet cavity (8) is fixedly installed on the lower inner wall of the housing (7). The right end of the motor (46) is fixedly installed on the right side wall in the housing (7). The housing (7) is placed on the existing working ground.

10. A shaping and sizing device, method for manufacturing a communication cable insulating sheath according to any one of claims 1-8, and the usage steps are as follows: S1. Preliminary shaping: Drive the extrusion ring (11) to rotate through power, and convey the molten insulating rubber extruded and overflowed by the arc-shaped blades close to the extrusion ring (11) to the extrusion blade group (12). S2. Flattening treatment: The molten insulating rubber passing through the extrusion blade group (12) is flattened by continuous arc-shaped blades and fills the small depressions on the surface of the molten insulating rubber sheath. S3. Precision adjustment: Through a plurality of extrusion devices (1) with gradually decreasing inner diameters from left to right, cooperate with the movement of the insulating sheath under the action of power towards the cooling chamber to perform multi-stage extrusion shaping on the molten insulating sheath. S4. Shaping and output: The shaped insulating sheath is output through the shaping ring (12).

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