A method for producing a fireproof power cable

Abstract

The application discloses a kind of production methods of fireproof power cable, the cable production equipment includes base, the top of the base is fixedly connected with support, the back of the support is provided with recess, the front of the support is provided with first through-hole, the first through-hole is communicated with recess, the front of the support is rotatably connected with conduit, the outer surface of the conduit is fixedly connected with rotating disc, the support is provided with driving mechanism, the recess is provided with flattening mechanism, the conduit and flattening mechanism are connected with driving mechanism, it is related to power cable production technical field, the application is extruded by cambered surface block push rod, so that flattening ball is pressed on cable, and under the action of driving mechanism, flattening ball rolls along the surface of cable, so that flattening treatment is realized to cable before being wound by mica tape, so that mica tape is tightly wound on cable, improve the fireproof effect of cable.

Description

Technical Field

[0001] This invention relates to the field of power cable manufacturing technology, specifically a method for producing fire-resistant power cables. Background Technology

[0002] The production of power cables arose in response to the development of power technology, and electricity is an energy source that uses electrical energy as its power source. In practical applications, some power cables undergo corresponding fireproofing treatments.

[0003] A search revealed Chinese Patent Publication No. CN217719158U, published on 2022-11-01, which discloses a fire-resistant mica tape wrapping device. The device includes a machine base with a transmission box fixedly connected to the left side of the top of the machine base. A guide rod is movably connected inside the transmission box. This device uses a right baffle fitted onto the surface of a guide post, and then a locking block threadedly connected to the guide post. The locking block contacts the right baffle, limiting the mica tape's position. The mica tape then passes through a cleaning frame and contacts a cleaning brush, achieving the advantage of convenient fixation and solving the problem of inconvenient fixation in existing mica tape wrapping devices. However, this device does not flatten the cable before wrapping it with the mica tape. Because the cable itself is somewhat bent, the mica tape is not wrapped tightly enough, affecting the fireproofing effect. Summary of the Invention

[0004] The purpose of this invention is to provide a method for producing fire-resistant power cables, solving the following technical problem: the existing devices mentioned in the background art do not flatten the cable before wrapping it with mica tape. Because the cable itself is somewhat bent, the mica tape is not wrapped tightly enough on the cable, affecting the fire-resistant effect.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A method for producing a fire-resistant power cable includes the following steps:

[0007] S1. First, put the mica tape on the positioning rod above the cable production equipment. Then, fix the mica tape and use the clamping mechanism to press the mica tape to prevent it from loosening.

[0008] S2. Next, the cable formed by twisting multiple monofilaments is passed through the flattening mechanism on the base and the flattening mechanism is used to flatten the cable.

[0009] S3. Finally, the drive mechanism is activated, and the turntable drives the mica tape to rotate. At the same time, the external winding mechanism is used to wind the cable, so that the cable moves forward. The flattening mechanism flattens the cable, and the mica tape wraps around the outer surface of the cable. Then, it is fed into the extruder to extrude the outer protective sleeve to obtain a cable with fireproof effect.

[0010] As a further embodiment of the present invention: the cable production equipment includes a base, a support fixedly connected to the top of the base, a groove on the back of the support, a first through hole on the front of the support, the first through hole communicating with the groove, a guide tube rotatably connected to the front of the support, a turntable fixedly connected to the outer surface of the guide tube, a driving mechanism on the support, a flattening mechanism in the groove, both the guide tube and the flattening mechanism being connected to the driving mechanism, a positioning rod fixedly connected to the turntable, a pressing mechanism on the positioning rod, and a vertical plate fixedly connected to the top of the base, with a wire hole penetrating through the front of the vertical plate.

[0011] As a further embodiment of the present invention: the driving mechanism includes a motor, a horizontal shaft and a first pulley. The motor is fixedly connected to the top of the support, and the output end of the motor is fixedly connected to a second pulley. The horizontal shaft is rotatably connected to the support, and one end of the horizontal shaft is fixedly connected to a third pulley. The first pulley, the second pulley and the third pulley are connected by belt drive. The other end of the horizontal shaft is fixedly connected to a first gear, and the first pulley is fixedly connected to a guide tube.

[0012] As a further embodiment of the present invention: the flattening mechanism includes an outer ring and an inner ring. The outer ring is fixedly connected to a groove by a bearing. A second gear is fixedly connected to the outer surface of the outer ring. The second gear meshes with a first gear. A first insertion hole and a second insertion hole are respectively opened through the outer ring. A placement groove is opened on the outer side of the inner ring. A positioning mechanism is provided in the placement groove. A movable groove is opened through the outer side of the inner ring. A fixing plate is fixedly connected in the movable groove. A second through hole is opened through the fixing plate. A flattening ball is connected between the outer ring and the inner ring by a push-out mechanism.

[0013] As a further aspect of the present invention: the positioning mechanism includes a rod, one end of which is fixedly connected to a sliding plate, the sliding plate being slidably connected to a placement groove, a first spring being fixedly connected between the sliding plate and the placement groove, and a protruding rod being fixedly connected to the outer surface of the rod, the outer surface of the rod being adapted to the interior of the first insertion hole and the second insertion hole respectively.

[0014] As a further aspect of the present invention: the ejection mechanism includes an arc-shaped block and a push rod. The arc-shaped block is integrally formed with the outer ring and is slidably connected to the inner ring. The push rod is slidably connected in the second through hole and is fixedly connected to the flattening ball. A second spring is sleeved on the outer surface of the push rod, and the second spring is fixedly connected to the flattening ball and the fixing plate respectively.

[0015] As a further embodiment of the present invention: the clamping mechanism includes a first baffle, a second baffle, and a fastening block. The first baffle is fixedly connected to the positioning rod. The second baffle and the fastening block are both threadedly connected to the positioning rod. A folding plate is fixedly connected to the outer surface of the first baffle. A third through hole is opened through the top of the folding plate. A threaded rod is slidably connected in the third through hole. A clamping rod is fixedly connected to the top of the threaded rod. A third spring is sleeved on the outer surface of the threaded rod. The third spring is fixedly connected to the folding plate and the clamping rod respectively. A nut is threadedly connected to the outer surface of the clamping rod.

[0016] Beneficial effects

[0017] This invention provides a method for producing fire-resistant power cables. Compared with the prior art, it has the following advantages:

[0018] (1) This application uses the arc-shaped block to squeeze the push rod, so that the flattening ball is pressed on the cable, and under the action of the drive mechanism, the flattening ball rolls along the surface of the cable, thereby flattening the cable before using mica tape to wrap the cable, so that the mica tape is tightly wrapped on the cable, improving the fire resistance of the cable.

[0019] (2) This application uses a third spring to drive the clamping rod to fit with the mica tape. During the process of the mica tape being wrapped around the cable, the clamping rod is always pressed on the mica tape body, which can prevent the mica tape from loosening. Attached Figure Description

[0020] Figure 1 This is a perspective view of the cable production equipment used in this invention;

[0021] Figure 2 for Figure 1 Side sectional view;

[0022] Figure 3 For the present invention Figure 2 A magnified view of a section at point A in the middle;

[0023] Figure 4 This is a side sectional view of the outer and inner rings of the present invention.

[0024] In the diagram: 1. Base; 2. Support; 3. Groove; 4. First through hole; 5. Guide tube; 6. Turntable; 7. Drive mechanism; 71. Motor; 72. Horizontal shaft; 73. First pulley; 74. Second pulley; 75. Third pulley; 76. Belt; 77. First gear; 8. Flattening mechanism; 801. Outer ring; 802. Inner ring; 803. Bearing; 804. Second gear; 805. First insertion hole; 806. Second insertion hole; 807. Placement slot; 808. Positioning mechanism; 8081. Insertion rod; 8082. Slide plate; 80 83. First spring; 84. Protruding rod; 809. Movable groove; 810. Fixed plate; 811. Second through hole; 812. Push-out mechanism; 8121. Arc block; 8122. Push rod; 8123. Second spring; 813. Flattening ball; 9. Positioning rod; 10. Clamping mechanism; 101. First baffle; 102. Second baffle; 103. Fastening block; 104. Folding plate; 105. Third through hole; 106. Threaded rod; 107. Clamping rod; 108. Third spring; 109. Nut; 11. Vertical plate; 12. Wire hole. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figure 1-4 As shown, the present invention relates to a method for producing a fire-resistant power cable, comprising the following steps:

[0027] S1. First, put the mica tape on the positioning rod 9 above the cable production equipment. Then, fix the mica tape and use the clamping mechanism 10 to clamp the mica tape to prevent it from loosening.

[0028] S2. Next, the cable formed by twisting multiple monofilaments is passed through the flattening mechanism 8 on the base 1 and the flattening mechanism 8 is used to flatten the cable.

[0029] S3. Finally, the drive mechanism 7 is activated, the turntable 6 drives the mica tape to rotate, and at the same time, the external winding mechanism is used to wind the cable, so that the cable moves forward. The flattening mechanism 8 flattens the cable, and the mica tape is wrapped around the outer surface of the cable. Then it is fed into the extruder to be extruded and formed into an outer protective sleeve, thus obtaining a cable with fireproof effect.

[0030] The cable production equipment includes a base 1. This cable production equipment is designed for use with thin cables. A support 2 is fixedly connected to the top of the base 1. A groove 3 is formed on the back of the support 2, and a first through hole 4 is formed on the front of the support 2. The first through hole 4 communicates with the groove 3. A guide tube 5 is rotatably connected to the front of the support 2. A turntable 6 is fixedly connected to the outer surface of the guide tube 5. A drive mechanism 7 is provided on the support 2, and a flattening mechanism 8 is provided in the groove 3. Both the guide tube 5 and the flattening mechanism 8 are connected to the drive mechanism 7. A positioning rod 9 is fixedly connected to the turntable 6, and a pressing mechanism 10 is provided on the positioning rod 9. A vertical plate 11 is fixedly connected to the top of the base 1. A wire hole 12 is opened through the front of the vertical plate 11. By using the arc block 8121 to press the push rod 8122, the flattening ball 813 is pressed onto the cable. Under the action of the driving mechanism 7, the flattening ball 813 rolls along the surface of the cable, thereby flattening the cable before using mica tape to wrap the cable, so that the mica tape is tightly wrapped around the cable, improving the fire resistance of the cable.

[0031] The drive mechanism 7 includes a motor 71, a horizontal shaft 72, and a first pulley 73. The motor 71 is electrically connected to an external power source and controlled by an external control program. The motor 71 is fixedly connected to the top of the support 2. A second pulley 74 is fixedly connected to the output end of the motor 71. The horizontal shaft 72 is rotatably connected to the support 2. A third pulley 75 is fixedly connected to one end of the horizontal shaft 72. The first pulley 73, the second pulley 74, and the third pulley 75 are connected by a belt 76. The second pulley 74 and the third pulley 75 are the same size, and the first pulley 73 is larger than the second pulley 74. Teeth are provided on the surfaces of the first pulley 73, the second pulley 74, and the third pulley 75. Teeth are also provided on the inner side of the belt 76, which facilitates the transmission of the first pulley 73, the second pulley 74, and the third pulley 75. A first gear 77 is fixedly connected to the other end of the horizontal shaft 72. The first pulley 73 is fixedly connected to the guide tube 5.

[0032] The flattening mechanism 8 includes an outer ring 801 and an inner ring 802. The outer ring 801 is fixedly connected to the groove 3 by a bearing 803. A second gear 804 is fixedly connected to the outer surface of the outer ring 801. The second gear 804 meshes with a first gear 77. A first insertion hole 805 and a second insertion hole 806 are respectively opened through the outer ring 801. A placement groove 807 is opened on the outer side of the inner ring 802. A positioning mechanism 808 is provided in the placement groove 807. A movable groove 809 is opened through the outer side of the inner ring 802. A fixing plate 810 is fixedly connected to the movable groove 809. A second through hole 811 is opened through the fixing plate 810. A flattening ball 813 is connected between the outer ring 801 and the inner ring 802 by a push-out mechanism 812.

[0033] The positioning mechanism 808 includes a rod 8081, one end of which is fixedly connected to a sliding plate 8082. The sliding plate 8082 is slidably connected to a placement groove 807. A first spring 8083 is fixedly connected between the sliding plate 8082 and the placement groove 807. A protruding rod 8084 is fixedly connected to the outer surface of the rod 8081. The outer surface of the rod 8081 is adapted to the interior of the first insertion hole 805 and the second insertion hole 806, respectively.

[0034] The ejection mechanism 812 includes an arc-shaped block 8121 and a push rod 8122. The arc-shaped block 8121 is integrally formed with the outer ring 801. The arc-shaped block 8121 is slidably connected to the inner ring 802. The inner ring 802 has a groove for the arc-shaped block 8121 to slide. The push rod 8122 is slidably connected in the second through hole 811. The push rod 8122 is fixedly connected to the flattening ball 813. A second spring 8123 is sleeved on the outer surface of the push rod 8122. The second spring 8123 is fixedly connected to the flattening ball 813 and the fixing plate 810 respectively.

[0035] The clamping mechanism 10 includes a first baffle 101, a second baffle 102, and a fastening block 103. The first baffle 101 is fixedly connected to the positioning rod 9. The second baffle 102 and the fastening block 103 are both threadedly connected to the positioning rod 9. A folding plate 104 is fixedly connected to the outer surface of the first baffle 101. A third through hole 105 is provided through the top of the folding plate 104. A threaded rod 106 is slidably connected in the third through hole 105. A clamping rod 107 is fixedly connected to the top of the threaded rod 106. The clamping rod 107 is not engaged with the first baffle. Plate 101 contacts the second baffle 102. A third spring 108 is sleeved on the outer surface of the threaded rod 106. The elastic force of the third spring 108 should not be too large, just enough to press down the mica tape. The third spring 108 is fixedly connected to the folding plate 104 and the pressing rod 107 respectively. The outer surface of the pressing rod 107 is threaded with a nut 109. By using the third spring 108 to drive the pressing rod 107 to fit against the mica tape, the pressing rod 107 always presses against the mica tape body during the process of the mica tape being wrapped around the cable, which can prevent the mica tape from loosening.

[0036] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0037] The working principle of this invention is as follows: By rotating the second baffle 102 and the fastening block 103, both the second baffle 102 and the fastening block 103 are removed from the positioning rod 9. Then, the nut 109 is rotated, causing the threaded rod 106 to move downward through the third through hole 105, thereby driving the clamping rod 107 downward. The third spring 108 is under compression. Then, the mica tape is placed on the positioning rod 9, and the second baffle 102 and the fastening block 103 are installed on the positioning rod 9. Finally, the nut 109 is rotated to adjust it to the initial position. The cable is initially positioned so that, under the elastic force of the third spring 108, the clamping rod 107 presses against the mica tape. Then, the cable is passed through the inner ring, and subsequently, it passes through the first through hole 4, the conduit 5, and the wire hole 12, connecting the cable to the winding machine. Next, the mica tape is wound around the cable. Then, by pushing the protruding rod 8084, the insertion rod 8081 is moved into the placement slot 807, causing the insertion rod 8081 to move out of the first insertion hole 805. Meanwhile, the first spring 8083 is compressed. Then, by pushing the protruding rod 8084... Rod 8084 and insert rod 8081 drive the inner ring 802 to rotate. Then, the protruding rod 8084 is released, and under the elastic force of the first spring 8083, the insert rod 8081 is inserted into the second insertion hole 806. Then, the motor 71 is turned on, thereby driving the second pulley 74 to rotate, which in turn drives the first pulley 73 and the third pulley 75 to rotate via the belt 76. The first pulley 73 drives the guide tube 5 to rotate, and the third pulley 75 drives the first gear 77 to rotate via the horizontal shaft 72. Thus, the turntable 6 rotates with the guide tube 5. The turntable 6 rotates, and the mica tape rotates via the positioning rod 9, so that the mica tape will wrap around the cable. The first gear 77 drives the second gear 804 to rotate through meshing transmission, which in turn drives the outer ring 801 to rotate on the bearing 803. Thus, the positioning mechanism 808 makes the inner ring 802 rotate synchronously with the outer ring 801. Then, the flattening ball 813 rotates along the surface of the cable, thereby applying pressure to all surfaces of the cable, flattening the bent parts of the cable, so that the mica tape is tightly wrapped around the cable, improving the fire resistance of the cable.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for producing a fire-resistant power cable, characterized in that: Includes the following steps: S1. First, put the mica tape on the positioning rod (9) above the cable production equipment. Then, fix the mica tape and use the clamping mechanism (10) to clamp the mica tape to prevent it from loosening. S2. Next, the cable formed by twisting multiple monofilaments is passed through the flattening mechanism (8) on the base (1) and the flattening mechanism (8) is used to flatten the cable. S3. Finally, turn on the drive mechanism (7), turntable (6) drives the mica tape to rotate, and at the same time, use the external winding mechanism to wind the cable so that the cable can move forward. The flattening mechanism (8) flattens the cable, and the mica tape wraps around the outer surface of the cable. Then it is fed into the extruder to be extruded and formed into an outer protective sleeve, thus obtaining a cable with fireproof effect. The cable production equipment includes a base (1), a support (2) fixedly connected to the top of the base (1), a groove (3) opened on the back of the support (2), a first through hole (4) opened on the front of the support (2), the first through hole (4) is connected to the groove (3), a conduit (5) is rotatably connected to the front of the support (2), a turntable (6) is fixedly connected to the outer surface of the conduit (5), a driving mechanism (7) is provided on the support (2), a flattening mechanism (8) is provided in the groove (3), the conduit (5) and the flattening mechanism (8) are both connected to the driving mechanism (7), a positioning rod (9) is fixedly connected to the turntable (6), a pressing mechanism (10) is provided on the positioning rod (9), and a vertical plate (11) is fixedly connected to the top of the base (1), a wire hole (12) is opened through the front of the vertical plate (11). The drive mechanism (7) includes a motor (71), a horizontal shaft (72) and a first pulley (73). The motor (71) is fixedly connected to the top of the support (2). The output end of the motor (71) is fixedly connected to a second pulley (74). The horizontal shaft (72) is rotatably connected to the support (2). One end of the horizontal shaft (72) is fixedly connected to a third pulley (75). The first pulley (73), the second pulley (74) and the third pulley (75) are connected by a belt (76). The other end of the horizontal shaft (72) is fixedly connected to a first gear (77). The first pulley (73) is fixedly connected to the guide tube (5). The flattening mechanism (8) includes an outer ring (801) and an inner ring (802). The outer ring (801) is fixedly connected to the groove (3) by a bearing (803). A second gear (804) is fixedly connected to the outer surface of the outer ring (801). The second gear (804) meshes with the first gear (77). A first insertion hole (805) and a second insertion hole (806) are respectively opened through the outer ring (801). A placement groove (807) is opened on the outer side of the inner ring (802). A positioning mechanism (808) is provided in the placement groove (807). A movable groove (809) is opened through the outer side of the inner ring (802). A fixing plate (810) is fixedly connected in the movable groove (809). A second through hole (811) is opened through the fixing plate (810). A flattening ball (813) is connected between the outer ring (801) and the inner ring (802) by a push-out mechanism (812). The positioning mechanism (808) includes a plug rod (8081), one end of which is fixedly connected to a sliding plate (8082). The sliding plate (8082) is slidably connected to a placement groove (807). A first spring (8083) is fixedly connected between the sliding plate (8082) and the placement groove (807). A protruding rod (8084) is fixedly connected to the outer surface of the plug rod (8081). The outer surface of the plug rod (8081) is adapted to the interior of the first insertion hole (805) and the second insertion hole (806), respectively. The ejection mechanism (812) includes an arc-shaped block (8121) and a push rod (8122). The arc-shaped block (8121) is integrally formed with the outer ring (801). The arc-shaped block (8121) is slidably connected with the inner ring (802). The push rod (8122) is slidably connected in the second through hole (811). The push rod (8122) is fixedly connected with the flattening ball (813). A second spring (8123) is sleeved on the outer surface of the push rod (8122). The second spring (8123) is fixedly connected with the flattening ball (813) and the fixing plate (810) respectively.

2. The method for producing a fire-resistant power cable according to claim 1, characterized in that: The clamping mechanism (10) includes a first baffle (101), a second baffle (102), and a fastening block (103). The first baffle (101) is fixedly connected to the positioning rod (9). The second baffle (102) and the fastening block (103) are both threadedly connected to the positioning rod (9). A folding plate (104) is fixedly connected to the outer surface of the first baffle (101). A third through hole (105) is opened through the top of the folding plate (104). A threaded rod (106) is slidably connected in the third through hole (105). A clamping rod (107) is fixedly connected to the top of the threaded rod (106). A third spring (108) is sleeved on the outer surface of the threaded rod (106). The third spring (108) is fixedly connected to the folding plate (104) and the clamping rod (107) respectively. A nut (109) is threadedly connected to the outer surface of the threaded rod (106).

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