A kind of conductor stranding device for polyvinyl chloride insulated flexible cable production

Abstract

This invention provides a conductor stranding device for the production of polyvinyl chloride (PVC) insulated flexible cables, relating to the field of cable manufacturing technology. It includes a frame assembly, a winding assembly, a rotating assembly, an unwinding assembly, a coating assembly, a die base, and a tensioning assembly. The frame assembly provides the installation position; the winding assembly is located at one end of the frame assembly and provides the winding function; the rotating assembly is located at the center of the frame assembly and provides the winding rotation power; the unwinding assembly is located on the rotating part of the rotating assembly and is used to unwind the conductor; the coating assembly is located on the rotating part of the rotating assembly and is used to apply water-blocking adhesive. Through the configured rotating assembly and coating assembly, coating operations can be performed simultaneously with stranding, meeting the production requirements of PVC insulated flexible cables without the need for separate coating operations.

Description

Technical Field

[0001] This invention relates to the field of cable manufacturing technology, specifically to a conductor stranding device for the production of polyvinyl chloride insulated flexible cables. Background Technology

[0002] To meet the requirement of flexibility, PVC insulated flexible cables employ a stranded conductor internally. This stranding makes the cable very flexible and easy to bend, making installation, such as through conduits and at bends, much easier. It avoids the difficulties caused by excessive stiffness and also prevents the breakage that can occur with solid conductors after repeated bending. A stranding device is required during the production of PVC insulated flexible cables.

[0003] In related technologies, such as the multi-strand special conductor stranding untwisting cage type stranding machine with announcement number CN209183331U, there are power transmission mechanisms, conductor stranding mechanisms, conductor winding mechanisms and conductor take-up mechanisms. The power transmission mechanism is connected to the conductor stranding mechanism and the conductor winding mechanism respectively. The stranded conductor formed by the conductor stranding mechanism is shaped by the conductor winding mechanism and then wound and coiled in the conductor take-up mechanism.

[0004] In order to meet the requirements of submarine use, water-blocking adhesive needs to be coated on the surface of the unstranded conductor during the production of polyvinyl chloride insulated flexible cables. However, traditional stranding devices cannot meet the requirements for the production and use of this cable. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a conductor stranding device for the production of polyvinyl chloride insulated flexible cables, which solves the problem of not being able to coat the conductors with water-blocking adhesive during stranding.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a conductor stranding device for the production of polyvinyl chloride insulated flexible cables, comprising: A frame assembly for providing an installation location; A winding assembly, located at one end of the frame assembly, is used to provide a winding function; A rotating assembly, located at the center of the frame assembly, is used to provide the power for twisting and rotation; An unwinding assembly, which is mounted on the rotating part of the rotating assembly, is used to unwind the conductor; A coating assembly, which is disposed on the rotating part of the rotating assembly, is used to coat a water-blocking adhesive; A die holder, which is disposed on the frame assembly, is used to restrict the stranded conductor; The tensioning assembly, located at the center of the frame assembly, provides tensioning functionality. Through the included rotating and coating components, coating can be performed simultaneously with stranding, meeting the production requirements of PVC insulated flexible cables without the need for separate coating operations. The tensioning and unwinding assemblies ensure the conductor remains under constant tension, guaranteeing high-quality stranding. Furthermore, the overall structure is compact, requiring minimal floor space and saving space.

[0007] Preferably, the frame assembly includes a square frame one and a square frame two fixed together, and a ring frame is fixedly connected inside the square frame one.

[0008] Preferably, the winding assembly includes a winding base fixedly installed at one end of the square frame, a winding motor fixedly installed on the upper part of the winding base, a winding roller fixedly connected to the output end of the winding motor, and the winding roller fixedly installed on the winding base.

[0009] Preferably, the rotating assembly includes a drive wheel and an auxiliary wheel rotatably mounted inside the ring frame. A rotary motor is fixedly mounted on the ring frame, and the output end of the rotary motor is fixedly connected to the drive wheel. A rotating disk is provided between the drive wheel and the auxiliary wheel, and a guide ring is provided on the rotating disk. A center plate is fixedly connected to the center of the rotating disk.

[0010] Preferably, the unwinding assembly includes an unwinding frame fixedly mounted on a rotating disk, an unwinding shaft fixedly connected to the unwinding frame, a fixing plate fixedly connected to the unwinding shaft, an unwinding roller on the unwinding shaft, end face teeth on the end face of the unwinding roller, a threaded section at one end of the unwinding shaft, a meshing disc sleeved on the unwinding shaft, an adjusting disc on the outer side of the meshing disc, the adjusting disc threadedly engaging with the threaded section, a compression spring between the meshing disc and the adjusting disc, and the meshing disc engaging with the end face teeth.

[0011] Preferably, the coating assembly includes a receiving tube that penetrates the center plate. The receiving tube is fixedly connected to the center plate by two fixing nuts. A coating plate is fixedly connected to one end of the receiving tube, and a coating block is fixedly connected to the coating plate. The coating block has a figure-eight groove in the middle. An injection tube is fixedly connected to the other end of the receiving tube. The end of the injection tube has an openable end cap. The receiving tube and the coating block are in communication with each other.

[0012] Preferably, the tensioning assembly includes a tensioning tube slidably mounted on the center plate, a fixing ring fixedly connected to one end of the tensioning tube, a tensioning wheel fixedly mounted on the fixing ring, a tensioning nut threadedly connected to the other end of the tensioning tube, and a tensioning spring sleeved on the tensioning tube, the tensioning spring being located in front of the center plate.

[0013] Preferably, the coating block is made of sponge material.

[0014] This invention provides a conductor stranding device for the production of polyvinyl chloride insulated flexible cables. It has the following beneficial effects: This invention, through its rotating and coating components, enables coating operations to be performed simultaneously with stranding, meeting the production requirements of polyvinyl chloride insulated flexible cables without the need for additional coating operations.

[0015] The present invention, through the setting of tensioning and unwinding components, can ensure that the conductor is always in a tensioned state, which can ensure good quality of stranding operation, and the overall structure is compact, with a small footprint, thus saving space. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a structural schematic diagram of the entire invention from another perspective; Figure 3 This is a schematic diagram of the frame assembly in this invention; Figure 4 This is a schematic diagram of the winding assembly in this invention; Figure 5 This is a schematic diagram of the unwinding assembly in this invention; Figure 6 This is a schematic diagram of the coating component in this invention; Figure 7 This is a schematic diagram of the tensioning component in this invention.

[0017] The components include: 1. Frame assembly; 2. Rewinding assembly; 3. Rotating assembly; 4. Unwinding assembly; 5. Coating assembly; 6. Die base; 7. Tensioning assembly; 101. Square frame one; 102. Square frame two; 103. Ring frame; 201. Rewinding seat; 202. Rewinding motor; 203. Rewinding roller; 301. Rotating motor; 302. Drive wheel; 303. Auxiliary wheel; 304. Rotary disk; 3041. Guide ring; 305. Center plate; 401. Unwinding frame. ; 402, Unwinding shaft; 403, Fixing plate; 404, Unwinding roller; 405, End face teeth; 406, Threaded section; 407, Engaging disc; 408, Compression spring; 409, Adjusting disc; 501, Coating block; 502, Coating plate; 503, Receiving tube; 504, Fixing nut; 505, Injection tube; 5011, Figure-eight groove; 701, Fixing ring; 702, Tensioning tube; 703, Tensioning wheel; 704, Tensioning nut; 705, Tensioning spring. Detailed Implementation

[0018] 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.

[0019] like Figure 1-7 As shown, an embodiment of the present invention provides a conductor stranding device for the production of polyvinyl chloride insulated flexible cables, comprising: refer to Figure 1 , Figure 2 , Figure 3 Frame assembly 1, which provides an installation position; Frame assembly 1 includes a square frame one 101 and a square frame two 102 fixed together, and a ring frame 103 is fixedly connected inside the square frame one 101. Square frame 101 and square frame 2 102 are fixedly connected perpendicularly to each other, and ring frame 103 is circular.

[0020] refer to Figure 1 , Figure 4 The winding assembly 2 is located at one end of the frame assembly 1 and is used to provide winding function. The winding assembly 2 includes a winding seat 201 fixedly installed at one end of the square frame 102. A winding motor 202 is fixedly installed on the upper part of the winding seat 201. A winding roller 203 is fixedly connected to the output end of the winding motor 202. The winding roller 203 is fixedly installed on the winding seat 201. During the winding operation, the winding motor 202 operates under the control of the external power supply and controller, driving the winding roller 203 to rotate, thereby enabling the winding of the stranded conductor.

[0021] refer to Figure 1 , Figure 2 Rotating component 3 is located at the center of frame component 1 and is used to provide twisting rotation power. Rotating component 3 includes a drive wheel 302 and an auxiliary wheel 303 rotatably mounted inside the ring frame 103. A rotary motor 301 is fixedly mounted on the ring frame 103. The output end of the rotary motor 301 is fixedly connected to the drive wheel 302. A rotating disk 304 is provided between the drive wheel 302 and the auxiliary wheel 303. A guide ring 3041 is provided on the rotating disk 304. A center plate 305 is fixedly connected to the center of the rotating disk 304. During rotation, the rotary motor 301 operates under the control of the external power supply and controller, driving the drive wheel 302 to rotate. The drive wheel 302 and the auxiliary wheel 303 can drive the rotary disk 304 to rotate, thereby providing power for winch.

[0022] refer to Figure 1 , Figure 2 , Figure 5 Unwinding assembly 4 is mounted on the rotating part of rotating assembly 3 and is used to unwind conductor. Unwinding assembly 4 includes unwinding frame 401 fixedly mounted on rotating disk 304, unwinding shaft 402 fixedly connected to unwinding frame 401, fixing plate 403 fixedly connected to unwinding shaft 402, unwinding roller 404 provided on unwinding shaft 402, end face tooth 405 provided on end face tooth 405, threaded section 406 provided at one end of unwinding shaft 402, engagement disc 407 sleeved on unwinding shaft 402, adjusting disc 409 provided on the outer side of engagement disc 407, adjusting disc 409 threadedly engaged with threaded section 406, compression spring 408 provided between engagement disc 407 and adjusting disc 409, engagement disc 407 can engage with end face tooth 405. During unwinding, the conductor on the unwinding roller 404 is unwound under the winding force. To ensure that the conductor is in a taut state, the meshing disc 407 will mesh with the end face teeth 405 under the action of the compression spring 408, ensuring that the unwinding roller 404 can release the conductor under a certain tension. The tooth shape of the end face teeth 405 can be triangular or trapezoidal. In the triangular state, the unwinding roller 404 can only rotate in one direction. In the trapezoidal state, the unwinding roller 404 can rotate in both directions. The choice can be made according to actual needs. When the pressure provided by the compression spring 408 needs to be adjusted, the adjustment disc 409 is rotated. The distance between the adjustment disc 409 and the engagement disc 407 decreases, thereby increasing the pressure of the compression spring 408. Conversely, the pressure decreases. The selection can be made according to the diameter of the conductor. The larger the conductor diameter, the greater the tensile force it can withstand, and thus it can be suitable for larger pressures. If the conductor diameter is small, the excessive tensile force will cause the conductor to break.

[0023] refer to Figure 1 , Figure 6 The coating component 5 is mounted on the rotating part of the rotating component 3 and is used to apply water-blocking adhesive. The coating component 5 includes a receiving tube 503 that passes through the center plate 305. The receiving tube 503 is fixedly connected to the center plate 305 by two fixing nuts 504. One end of the receiving tube 503 is fixedly connected to a coating plate 502. A coating block 501 is fixedly connected to the coating plate 502. The coating block 501 has a figure-eight groove 5011 in the middle. The other end of the receiving tube 503 is fixedly connected to an injection tube 505. The end of the injection tube 505 has an openable end cap. The receiving tube 503 and the coating block 501 are interconnected. The coating block 501 is made of sponge material. During the coating process, the water-blocking adhesive is injected into the receiving tube 503 through the injection pipe 505. Because the coating block 501 absorbs the adhering water-blocking adhesive, the surface of the conductor can be coated using the figure-eight groove 5011, thus achieving the coating of the conductor surface with water-blocking adhesive and meeting the production requirements of PVC insulated flexible cables. The water-blocking adhesive cures at room temperature and can fill the tiny gaps inside the conductor. Once the cable sheath is damaged and water enters, the adhesive will expand upon contact with water, blocking the water flow channel and preventing water from seeping along the conductor.

[0024] Die base 6, which is mounted on frame assembly 1, is used to restrict the stranded conductor; refer to Figure 1 , Figure 2 , Figure 7 Tensioning assembly 7 is located at the center of frame assembly 1 and is used to provide tensioning function. Tensioning assembly 7 includes a tensioning tube 702 that is slidably installed on the center plate 305. One end of the tensioning tube 702 is fixedly connected to a fixing ring 701. A tensioning wheel 703 is fixedly installed on the fixing ring 701. The other end of the tensioning tube 702 is threadedly connected to a tensioning nut 704. A tensioning spring 705 is sleeved on the tensioning tube 702 and is located in front of the center plate 305. During tensioning, the tensioning wheel 703 guides each conductor. The closer the tensioning wheel 703 is to the center plate 305, the greater the tension force it provides to the conductor, ensuring that the conductor remains taut and improving the quality of the stranded conductor. When adjustment is needed, tightening the tensioning nut 704 moves the tensioning tube 702 closer to the center plate 305, compresses the tensioning spring 705, and moves the tensioning wheel 703 closer to the center plate 305. When the tensioning nut 704 is loosened, the elastic force of the tensioning spring 705 moves the fixing ring 701 and the tensioning tube 702 away from the center plate 305.

[0025] Working principle: The unwinding roller 404 is installed on the corresponding unwinding shaft 402, and the conductor is passed through the guide ring 3041, the tensioning wheel 703 and then through the die holder 6; The winding motor 202 operates under the control of an external power supply and controller, driving the winding roller 203 to rotate, thereby enabling the winding of the stranded conductor. During the unwinding operation, the conductor on the unwinding roller 404 will be unwound under the winding power. In order to ensure that the conductor is in a taut state, under the action of the compression spring 408, the meshing disc 407 will mesh with the end face teeth 405 to ensure that the unwinding roller 404 can release the conductor under a certain tension. The tension wheel 703 can guide each conductor. The closer the tension wheel 703 is to the center plate 305, the greater the tension force it can provide to the conductor, ensuring that the conductor can maintain a taut state and improving the quality of the stranded conductor. While unwinding, a rotation operation is performed. The rotary motor 301 works under the action of the external power supply and controller, driving the drive wheel 302 to rotate. The drive wheel 302 and the auxiliary wheel 303 can drive the rotary disk 304 to rotate, thereby providing power for winding. While the conductor is moving, a coating operation can be performed. Water-blocking adhesive is injected into the receiving tube 503 from the injection tube 505. Since the coating block 501 absorbs the adhering water-blocking adhesive, the surface of the conductor can be coated using the figure-eight groove 5011, thus realizing the coating operation of water-blocking adhesive on the surface of the conductor.

[0026] 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 variations 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 conductor stranding device for producing polyvinyl chloride insulated flexible cables, characterized in that, include: A frame assembly (1) is used to provide an installation location; A winding assembly (2) is located at one end of the frame assembly (1) and is used to provide a winding function; Rotating component (3), which is located at the center of frame component (1) and is used to provide twisting rotation power; Unwinding assembly (4), which is disposed on the rotating part of the rotating assembly (3) and is used to unwind the conductor; The coating component (5) is disposed on the rotating part of the rotating component (3) and is used to coat water-blocking adhesive; A mold base (6) is provided on the frame assembly (1) and is used to restrict the stranded conductor; Tensioning component (7), which is located at the center of frame component (1) and is used to provide tensioning function.

2. The conductor stranding device for producing polyvinyl chloride insulated flexible cables according to claim 1, characterized in that: The frame assembly (1) includes a square frame one (101) and a square frame two (102) fixed together, and a ring frame (103) is fixedly connected inside the square frame one (101).

3. The conductor stranding device for producing polyvinyl chloride insulated flexible cables according to claim 2, characterized in that: The winding assembly (2) includes a winding seat (201) fixedly installed at one end of the square frame (102). A winding motor (202) is fixedly installed on the upper part of the winding seat (201). A winding roller (203) is fixedly connected to the output end of the winding motor (202). The winding roller (203) is fixedly installed on the winding seat (201).

4. The conductor stranding device for producing polyvinyl chloride insulated flexible cables according to claim 2, characterized in that: The rotating assembly (3) includes a drive wheel (302) and an auxiliary wheel (303) rotatably mounted inside the ring frame (103). A rotary motor (301) is fixedly mounted on the ring frame (103). The output end of the rotary motor (301) is fixedly connected to the drive wheel (302). A rotating disk (304) is provided between the drive wheel (302) and the auxiliary wheel (303). A guide ring (3041) is provided on the rotating disk (304). A center plate (305) is fixedly connected to the center of the rotating disk (304).

5. The conductor stranding device for producing polyvinyl chloride insulated flexible cables according to claim 4, characterized in that: The unwinding assembly (4) includes an unwinding frame (401) fixedly mounted on a rotating disk (304), an unwinding shaft (402) fixedly connected to the unwinding frame (401), a fixing plate (403) fixedly connected to the unwinding shaft (402), an unwinding roller (404) provided on the unwinding shaft (402), an end face tooth (405) provided on the end face of the unwinding roller (404), a threaded section (406) provided at one end of the unwinding shaft (402), a meshing disc (407) sleeved on the unwinding shaft (402), an adjusting disc (409) provided on the outer side of the meshing disc (407), the adjusting disc (409) threadedly engaged with the threaded section (406), a compression spring (408) provided between the meshing disc (407) and the adjusting disc (409), and the meshing disc (407) can mesh with the end face tooth (405).

6. The conductor stranding device for producing polyvinyl chloride insulated flexible cables according to claim 4, characterized in that: The coating assembly (5) includes a receiving tube (503) that passes through the center plate (305). The receiving tube (503) is fixedly connected to the center plate (305) by two fixing nuts (504). One end of the receiving tube (503) is fixedly connected to a coating plate (502). A coating block (501) is fixedly connected to the coating plate (502). The coating block (501) has a figure-eight groove (5011) in the middle. The other end of the receiving tube (503) is fixedly connected to an injection tube (505). The end of the injection tube (505) is provided with an openable end cap. The receiving tube (503) and the coating block (501) are in communication with each other.

7. The conductor stranding device for producing polyvinyl chloride insulated flexible cables according to claim 4, characterized in that: The tensioning assembly (7) includes a tensioning tube (702) slidably mounted on the center plate (305). One end of the tensioning tube (702) is fixedly connected to a fixing ring (701), and a tensioning wheel (703) is fixedly mounted on the fixing ring (701). The other end of the tensioning tube (702) is threadedly connected to a tensioning nut (704), and a tensioning spring (705) is sleeved on the tensioning tube (702). The tensioning spring (705) is located in front of the center plate (305).

8. The conductor stranding device for producing polyvinyl chloride insulated flexible cables according to claim 6, characterized in that: The coating block (501) is made of sponge material.

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