Wire stranding device for cable production

Abstract

The invention discloses a stranding device for cable production, and relates to the technical field of cables, the stranding device comprises a stranding machine, the stranding machine is rotatably connected with a stranding cylinder, the stranding machine is fixedly connected with supporting rods symmetrically distributed along the stranding machine, a gathering frame and a guiding frame are slidably connected between the symmetrically distributed supporting rods, the gathering frame is located between the stranding cylinder and the guiding frame, and the guiding frame is located between the stranding cylinder and the guiding frame. The gathering frame and the guide frame are fixed on the supporting rod through screws, a wire closing hole is formed in the middle of the gathering frame, wire penetrating holes distributed in the circumferential direction are formed in the guide frame, and a contact switch is connected to the side, close to each wire penetrating hole, of the guide frame in a sliding mode. On the basis that the photoelectric sensor carries out broken wire detection, the contact switch is used for assisting, so that the stranding machine can be controlled to stop suddenly in time when the wire is broken, and the situation that the broken monofilament is stranded into the whole cable due to the fact that the broken monofilament cannot be connected or replaced in time is avoided. Therefore, the production efficiency and the product quality of the cable are prevented from being influenced.

Description

Technical Field

[0001] The invention relates to the technical field of cables, and in particular to a wire stranding device for cable production. Background Art

[0002] In the cable production process, stranding refers to the process of twisting multiple single wires (such as copper wire or aluminum wire) together according to a specific pitch and direction to form one or more conductors. The wire bundling process is the basic step of stranding, which mainly refers to bundling multiple thin wires into a thicker conductor to improve conductivity, flexibility and mechanical strength.

[0003] In the production process of cable strands, visual inspection is often used, that is, by installing photoelectric sensors to collect data and using image processing algorithms to identify abnormalities (such as broken or exposed wires) to check whether there are obvious wire breaks or damage on the cable surface. However, in actual applications, when wire break detection relies on photoelectric sensors to determine whether a wire break has occurred, after the cable breaks, the broken part still remains within the detection range of the photoelectric sensor. In this way, traditional photoelectric sensors may delay response due to the inability to identify this state change in time, resulting in the inability to stop the equipment in an emergency and connect or replace the broken single wire in time, causing the broken single wire to be twisted into the entire cable, thereby affecting production efficiency and product quality. Summary of the invention

[0004] In order to overcome the disadvantage that photoelectric sensors may delay response due to failure to timely identify the disconnection state, the present invention provides a wire twisting device for cable production.

[0005] A wire stranding device for cable production includes a wire stranding machine, which is rotatably connected to a wire stranding drum. The wire stranding machine is fixedly connected to support rods symmetrically distributed along the wire stranding machine, a gathering frame and a guide frame are slidably connected between the symmetrically distributed support rods, the gathering frame is located between the wire stranding drum and the guide frame, the gathering frame and the guide frame are fixed to the support rods by screws, a wire closing hole is opened in the middle of the gathering frame, and a wire threading hole is opened in the circumferential direction. A contact switch is slidably connected to one side of the guide frame close to each wire threading hole, the contact switch is electrically connected to the wire stranding machine through a control module, a first spring is fixedly connected between the contact switch and the guide frame, a photoelectric sensor is fixedly connected to the middle of the guide frame, the photoelectric sensor is electrically connected to the wire stranding machine through the control module, and the contact switch moves toward the center of the guide frame to contact the photoelectric sensor.

[0006] In one of the embodiments, it also includes a turntable, which is fixedly connected to the wire twisting drum, and the turntable is slidably connected to a sliding rod symmetrically distributed along the turntable, and the gathering frame is slidably connected to a pulling frame, and the sliding rod is used to squeeze the pulling frame to slide toward a side away from the contact switch, and a plug block symmetrically distributed along the pulling frame is inserted on the side of the pulling frame away from the sliding rod, and the guide frame is slidably connected to a guide frame, and the guide frame is used to squeeze the contact switch to slide toward a side where a first spring is compressed, and the plug block contacts the guide frame, and a circumferentially distributed first tension spring is fixed between the guide frame and the guide frame.

[0007] In one of the embodiments, the end surface of the pull frame close to the sliding rod is set as a wedge-shaped surface, and the pull frame is pressed and matched with the sliding rod through the wedge-shaped surface.

[0008] In one of the embodiments, a side of the contact switch close to the guide frame is provided with a wedge-shaped surface, and the contact switch is extruded and matched with the guide frame through the wedge-shaped surface.

[0009] In one embodiment, the elastic coefficient of the first tension spring is greater than the elastic coefficient of the first spring.

[0010] In one embodiment, there are also blocks symmetrically distributed along the turntable, the blocks are slidably connected to the turntable, the blocks are in contact with adjacent sliding rods, and the contact surface of the blocks is set to be V-shaped, and a second spring is fixed between the blocks and the turntable.

[0011] In one of the embodiments, it also includes an L-shaped fixing rod corresponding to the sliding rod, the L-shaped fixing rod is slidably connected to the corresponding sliding rod, one end of the L-shaped fixing rod is in contact with the turntable, a second tension spring is fixed between the L-shaped fixing rod and the corresponding sliding rod, the turntable is provided with card holes symmetrically distributed along the turntable, and the L-shaped fixing rod is moved and inserted into the corresponding card hole.

[0012] In one of the embodiments, it also includes a magnetic guide frame, which is slidably connected to the guide frame, one side of the magnetic guide frame is set as a wedge-shaped surface, the guide frame is slidably connected to a circumferentially distributed wire grabbing block, the wire grabbing block is slidably connected to the magnetic guide frame, and the magnetic guide frame is squeezed and fitted with the wire grabbing block through the wedge-shaped surface, the wire grabbing block is provided with a groove, a circumferentially distributed third spring is fixedly connected between the magnetic guide frame and the guide frame, the guide frame is fixedly provided with at least one electromagnet, the electromagnet attracts the magnetic guide frame through magnetic force, and the contact switch is electrically connected to the electromagnet through a control module.

[0013] The beneficial effects are: 1. In addition to the photoelectric sensor for detecting broken wires, the present invention is also assisted by a contact switch, so that when the wire is broken, the stranding machine can be controlled to stop urgently in time, avoiding the broken single wires from being twisted into the whole cable due to the inability to connect or replace the wires in time, thereby avoiding affecting the production efficiency and product quality of the cable.

[0014] 2. The present invention squeezes and pushes all the contact switches through the guiding frame, so that each wire threading hole of the guiding frame is completely opened, facilitating wire threading. And during stranding, the guiding frame is moved away by centrifugal force to relieve the force on the contact switches, so that each contact switch is only affected by the tension of a single wire during the stranding process.

[0015] 3. The present invention sets the clamping block and the second spring to initially slow down the sliding speed of the sliding rod, and ultimately achieves the purpose of initially delaying the removal of the guiding frame, reducing the possibility of accidental shutdown.

[0016] 4. The present invention sets the L-shaped fixing rod to fix the sliding rod after it slides outwards, so that when a wire break causes the stranding machine to shut down immediately, by observing the closing condition of the wire threading hole, the position of the wire break can be conveniently and intuitively located, which helps to subsequently find out the broken wire and perform wiring or wire replacement.

[0017] 5. At the moment of wire break, the present invention tries to catch the broken wire through the groove of the wire catching block as much as possible, which is convenient for quickly finding the broken wire at the wire threading hole of the guiding frame subsequently. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0019] Figure 2 It is a three-dimensional structural schematic diagram of components such as the stranding machine, stranding drum and support rod of the present invention.

[0020] Figure 3 It is a three-dimensional structural schematic diagram of the guiding frame, contact switch and first spring of the present invention.

[0021] Figure 4 It is a three-dimensional structural schematic diagram of the contact switch, first spring and photoelectric sensor of the present invention.

[0022] Figure 5 It is a three-dimensional structural schematic diagram of components such as the sliding rod, pulling frame and inserting block of the present invention.

[0023] Figure 6 It is a three-dimensional structural schematic diagram of the separation of the turntable, sliding rod, pulling frame, inserting block and guiding frame of the present invention.

[0024] Figure 7 It is a three-dimensional structural schematic diagram of the turntable, sliding rod, clamping block and second spring of the present invention.

[0025] Figure 8 It is a three-dimensional structural schematic diagram of the separation of components such as the L-shaped fixing rod and the second pulling spring of the present invention.

[0026] Fig. 9 It is a three-dimensional structural schematic diagram of components such as the magnetic guiding frame, wire catching block and third spring of the present invention.

[0027] Fig.10 It is a schematic diagram of the three-dimensional structure of the magnetic guide frame and the wire grabbing block separated from each other according to the present invention.

[0028] In the accompanying drawings: 1-twisting machine, 2-twisting drum, 3-support rod, 4-gathering frame, 5-screw, 6-guide frame, 7-contact switch, 8-first spring, 9-photoelectric sensor, 10-turntable, 11-slide rod, 12-pull frame, 13-insert block, 14-guide frame, 15-first tension spring, 16-block, 17-second spring, 18-L-shaped fixing rod, 19-second tension spring, 20-magnetic guide frame, 21-catch block, 211-groove, 22-third spring, 23-electromagnet. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0030] Embodiment 1: A wire stranding device for cable production, combined with the attached Figure 1 To Attachment Figure 4 , including a stranding machine 1, the right side of the stranding machine 1 is rotatably connected to a stranding drum 2, the right side of the stranding machine 1 is fixedly connected to a support rod 3 symmetrically distributed along the front and back of the stranding machine 1, a gathering frame 4 and a guide frame 6 are slidably connected between the support rods 3 symmetrically distributed along the front and back directions, the gathering frame 4 is located between the stranding drum 2 and the guide frame 6, the gathering frame 4 and the guide frame 6 are fixed to the support rod 3 by two front and rear screws 5, a wire closing hole is opened in the middle of the gathering frame 4, and a circumferentially distributed wire threading hole is opened in the eccentric position of the guide frame 6, and a contact switch 7 is slidably connected to one side of the guide frame 6 close to each wire threading hole, the contact switch 7 is electrically connected to the stranding machine 1 through a control module, a first spring 8 is fixed between the contact switch 7 and the guide frame 6, a photoelectric sensor 9 is fixedly connected to the middle of the guide frame 6, the photoelectric sensor 9 is electrically connected to the stranding machine 1 through the control module, and the contact switch 7 moves toward the center of the guide frame 6 to contact the photoelectric sensor 9.

[0031] First, each single wire used for cable twisting is passed through the wire threading holes of the guide frame 6 to the left respectively, and then each single wire is passed through the wire combining hole of the gathering frame 4 to the left together, and then inserted into the twisting drum 2, and then the twisting machine 1 is turned on to bundle multiple thin single wires into a thicker cable conductor. In the twisting process, the photoelectric sensor 9 is used to collect data, and the image processing algorithm is used to identify the abnormality of broken wire. When the broken wire is identified, the photoelectric sensor 9 can control the twisting machine 1 to stop urgently through the control module. After the twisting is completed, the twisting machine 1 is turned off.

[0032] In addition, during the wire twisting process, when the individual single wires converge from the wire threading holes of the guide frame 6 to the wire combining holes of the gathering frame 4, the tensioning force will squeeze the contact switch 7 to slide toward the side of the compressed first spring 8, so that each contact switch 7 is in contact with the photoelectric sensor 9. If any of the single wires breaks, the broken single wire immediately loses tension, causing the corresponding contact switch 7 to disengage from the photoelectric sensor 9. At this time, the corresponding contact switch 7 controls the wire twisting machine 1 to shut down immediately through the control module.

[0033] In this way, the present invention is assisted by the contact switch 7 on the basis of the photoelectric sensor 9 for wire break detection, so that when the wire is broken, the stranding machine 1 can be controlled to stop urgently in time, so as to avoid the broken single wire being twisted into the whole cable due to the inability to connect or replace the wire in time, thereby avoiding the production efficiency and product quality of the cable being affected.

[0034] Embodiment 2: Based on embodiment 1, Figure 5 and attached Figure 6 , also includes a turntable 10, the turntable 10 is fixedly connected to the wire twisting drum 2, the turntable 10 is slidably connected to the sliding rod 11 symmetrically distributed along the front and back of the turntable 10, the gathering frame 4 is slidably connected to the pulling frame 12 in the left and right directions, the end surface of the pulling frame 12 close to the sliding rod 11 is set as a wedge-shaped surface, the pulling frame 12 is squeezed and matched with the sliding rod 11 through the wedge-shaped surface, and the sliding rod 11 can squeeze the pulling frame 12 to slide to the left, and the right side of the pulling frame 12 is plugged with an insert block 13 symmetrically distributed along the front and back of the pulling frame 12 in the up and down direction. The insert block 13 is inserted into the pulling frame 12 by plugging, which can not affect the guide frame 14 to slide to the right along the guide frame 6. The guide frame 6 is disassembled without affecting the gathering frame 4 being slid to the right and removed. The left side of the guide frame 6 is slidably connected with a guide frame 14 in the left and right directions. The side of the contact switch 7 close to the guide frame 14 is set as a wedge-shaped surface. The contact switch 7 is squeezed and matched with the guide frame 14 through the wedge-shaped surface. The guide frame 14 can squeeze the contact switch 7 to slide to the side of the compressed first spring 8. The plug block 13 is in contact with the guide frame 14, and the plug block 13 is inserted between the guide frame 14 and the guide frame 6. A circumferentially distributed first tension spring 15 is fixed between the guide frame 14 and the guide frame 6, and the elastic coefficient value of the first tension spring 15 is greater than the elastic coefficient value of the first spring 8.

[0035] In order to facilitate threading, initially, all contact switches 7 need to be squeezed and pushed open by the guide frame 14, so that the threading holes of the guide frame 6 are fully opened. At this time, each contact switch 7 is pushed to contact the photoelectric sensor 9. When twisting the wire, the guide frame 14 needs to be removed to release the force of the contact switch 7, so that each contact switch 7 is only affected by the tension of the single wire during the twisting process. The specific operation of removing the guide frame 14 during the twisting process is as follows: When twisting the wire, the wire twisting drum 2 rotates at high speed, driving the turntable 10 to rotate at high speed, so that the slide bar 11 slides outward under the action of centrifugal force, and the slide bar 11 squeezes the wedge-shaped surface of the pull frame 12, so that the pull frame 12 pulls the guide frame 14 to move to the left through the plug block 13, and the first tension spring 15 is stretched, and the guide frame 14 no longer squeezes the contact switches 7, thereby achieving the force release of the guide frame 14 on the contact switch 7; when the wire twisting drum 2 stops rotating, the slide bar 11 is no longer squeezed by the centrifugal force to squeeze the pull frame 12, and the first tension spring 15 is reset, driving the guide frame 14 to slide rightward and reset, and the guide frame 14 drives the pull frame 12 to move rightward and reset through the plug block 13, and the pull frame 12 squeezes the slide bar 11 through the wedge-shaped surface to slide inward and reset.

[0036] Combined with Figure 7 , and also includes a block 16 symmetrically distributed along the front and back of the turntable 10, the block 16 is slidably connected to the turntable 10, the block 16 contacts the adjacent slide bar 11, and the contact surface of the block 16 is set to be V-shaped, and a second spring 17 is fixed between the block 16 and the turntable 10.

[0037] In the early stage of wire twisting, each single wire may not have entered the fully tensioned wire twisting state in time. If the guide frame 14 is removed when the wire twisting drum 2 starts to rotate, the contact switch 7 may be affected by neither the squeezing force of the guide frame 14 nor the tensioning force of the single wire, which may cause the contact switch 7 to disconnect the photoelectric sensor 9 in advance, and then there is a great possibility of an incorrect shutdown. Therefore, it is necessary to delay the operation of removing the guide frame 14 through the following operations. Specifically: when the slide bar 11 slides outward under the action of centrifugal force, it needs to overcome the resistance from the block 16 and the second spring 17 in the initial stage. In this way, the sliding speed of the slide bar 11 is initially slowed down, and finally the purpose of delaying the removal of the guide frame 14 in the initial stage is achieved.

[0038] Embodiment 3: Based on Embodiment 2, Figure 8 , and also includes an L-shaped fixing rod 18 corresponding to the sliding rod 11, the L-shaped fixing rod 18 is slidably connected to the corresponding sliding rod 11, the left end of the L-shaped fixing rod 18 is in contact with the turntable 10, and a second tension spring 19 is fixedly connected between the L-shaped fixing rod 18 and the corresponding sliding rod 11, and the turntable 10 is provided with card holes symmetrically distributed along the turntable 10, and the L-shaped fixing rod 18 moves outward and is inserted into the corresponding card hole.

[0039] When a wire break occurs and the stranding machine 1 shuts down immediately, if the slide bar 11 automatically resets inward, all the contact switches 7 automatically return to the initial state of being squeezed and pushed open by the guide frame 14, so that the wire break cannot be visually detected. Therefore, after the slide bar 11 slides outward under the action of centrifugal force, when the slide bar 11 drives the L-shaped fixing rod 18 to move to the clamping hole, the second tension spring 19 in the stretched state immediately resets and drives the L-shaped fixing rod 18 to insert into the clamping hole of the turntable 10, thereby fixing the slide bar 11 in the position after sliding outward. In this way, when a wire break occurs and the stranding machine 1 shuts down immediately, the slide bar 11 cannot be reset inward, so that the guide frame 14 cannot be reset immediately, and the first spring 8 at the wire break will reset, and push the corresponding contact switch 7 to slide and close the wire threading hole at the wire break of the guide frame 6. By observing the closing of the wire threading hole, the position of the wire break can be conveniently and intuitively located, which is helpful for subsequent sorting out of the broken wire and wiring or changing the wire. When it is necessary to restore the initial state, pull the L-shaped fixing rod 18 to the right to disengage the L-shaped fixing rod 18 from the clamping hole of the turntable 10.

[0040] Combined with Fig. 9 and attached Fig.10 , also includes a magnetic guide frame 20, the magnetic guide frame 20 is slidably connected to the guide frame 6, the right side of the magnetic guide frame 20 is set as a wedge-shaped surface, the guide frame 6 is slidably connected with a circumferentially distributed wire grabbing block 21, the wire grabbing block 21 is slidably connected to the magnetic guide frame 20, and the magnetic guide frame 20 is squeezed and matched with the wire grabbing block 21 through the wedge-shaped surface, the magnetic guide frame 20 moves to the right to squeeze the wire grabbing block 21 to move inward, and a groove 211 is provided on the side of the wire grabbing block 21 close to the adjacent wire threading hole, a circumferentially distributed third spring 22 is fixedly connected between the magnetic guide frame 20 and the guide frame 6, two front and rear electromagnets 23 are fixedly connected to the right side of the guide frame 6, the contact switch 7 is electrically connected to the electromagnet 23 through the control module, and the electromagnet 23 attracts the magnetic guide frame 20 to move to the right through magnetic force.

[0041] When the wire breaks, due to the sudden release of tension and the elastic properties of the material itself, the originally stretched parts at both ends of the wire shrink rapidly, making it difficult to find the broken wire later. For this reason, when the wire breaks, the corresponding contact switch 7 controls the electromagnet 23 to be energized through the control module. Under the action of the magnetic attraction, the magnetic guide frame 20 slides to the right, and the third spring 22 is compressed. The magnetic guide frame 20 squeezes the wire grabbing block 21 through the wedge-shaped surface on the right side to slide toward the side of the wire threading hole adjacent to the guide frame 6, so that the wire grabbing block 21 can grab the broken wire as much as possible through the groove 211 at the moment of breaking, so that the broken wire can be quickly found at the wire threading hole of the guide frame 6 later.

[0042] Although the above embodiments describe the present invention in detail, it is obvious to those skilled in the art through this disclosure that various changes or modifications may be made to the present invention without departing from the principle and spirit of the present invention as defined by the claims. Therefore, the detailed description of the embodiments of the present disclosure is only used to explain, not to limit the present invention, but the scope of protection is limited by the content of the claims.

Claims

1. A wire stranding device for cable production, comprising a wire stranding machine (1), the wire stranding machine (1) being rotatably connected to a wire stranding drum (2), the wire stranding machine (1) being fixedly connected to support rods (3) symmetrically distributed along the wire stranding machine (1), a gathering frame (4) and a guide frame (6) being slidably connected between the symmetrically distributed support rods (3), the gathering frame (4) being located between the wire stranding drum (2) and the guide frame (6), the gathering frame (4) and the guide frame (6) being fixed to the support rods (3) by screws (5), a wire closing hole being opened in the middle of the gathering frame (4), and a wire threading hole being opened in the circumferential direction of the guide frame (6), characterized in that: A contact switch (7) is slidably connected to one side of the guide frame (6) close to each threading hole. The contact switch (7) is electrically connected to the stranding machine (1) through a control module. A first spring (8) is fixedly connected between the contact switch (7) and the guide frame (6). A photoelectric sensor (9) is fixedly connected to the middle of the guide frame (6). The photoelectric sensor (9) is electrically connected to the stranding machine (1) through the control module. The contact switch (7) moves toward the center of the guide frame (6) to contact the photoelectric sensor (9).

2. A cable stranding device for cable production according to claim 1, characterized in that: The invention also includes a rotating disk (10), the rotating disk (10) is fixedly connected to the wire twisting drum (2), the rotating disk (10) is slidably connected to a sliding rod (11) symmetrically distributed along the rotating disk (10), the gathering frame (4) is slidably connected to a pulling frame (12), the sliding rod (11) is used to squeeze the pulling frame (12) to slide toward a side away from the contact switch (7), the side of the pulling frame (12) away from the sliding rod (11) is plugged with an insert block (13) symmetrically distributed along the pulling frame (12), the guide frame (6) is slidably connected to a guide frame (14), the guide frame (14) is used to squeeze the contact switch (7) to slide toward a side of compressing the first spring (8), the insert block (13) is in contact with the guide frame (14), and a circumferentially distributed first tension spring (15) is fixedly connected between the guide frame (14) and the guide frame (6).

3. A cable stranding device for cable production as claimed in claim 2, characterized in that: The end surface of the pull frame (12) close to the slide bar (11) is arranged as a wedge-shaped surface, and the pull frame (12) is pressed and matched with the slide bar (11) through the wedge-shaped surface.

4. A cable stranding device for cable production as claimed in claim 3, characterized in that: A side of the contact switch (7) close to the guide frame (14) is provided as a wedge-shaped surface, and the contact switch (7) is extruded and matched with the guide frame (14) via the wedge-shaped surface.

5. A cable stranding device as claimed in claim 4, characterized in that: The elastic coefficient value of the first tension spring (15) is greater than the elastic coefficient value of the first spring (8).

6. A wire stranding device for cable production as claimed in claim 5, characterized in that: It also includes a clamping block (16) symmetrically distributed along the rotating disk (10), the clamping block (16) being slidably connected to the rotating disk (10), the clamping block (16) being in contact with an adjacent sliding rod (11), and the contact surface of the clamping block (16) being arranged in a V shape, and a second spring (17) being fixedly connected between the clamping block (16) and the rotating disk (10).

7. A cable stranding device as claimed in claim 6, characterized in that: It also includes an L-shaped fixing rod (18) corresponding to the slide rod (11), the L-shaped fixing rod (18) is slidably connected to the corresponding slide rod (11), one end of the L-shaped fixing rod (18) is in contact with the turntable (10), a second tension spring (19) is fixedly connected between the L-shaped fixing rod (18) and the corresponding slide rod (11), the turntable (10) is provided with clamping holes symmetrically distributed along the turntable (10), and the L-shaped fixing rod (18) is movably inserted into the corresponding clamping hole.

8. A cable stranding device as claimed in claim 7, characterized in that: The invention also comprises a magnetic guide frame (20), the magnetic guide frame (20) being slidably connected to a guide frame (6), one side of the magnetic guide frame (20) being arranged as a wedge-shaped surface, the guide frame (6) being slidably connected to a circumferentially distributed wire grabbing block (21), the wire grabbing block (21) being slidably connected to the magnetic guide frame (20), and the magnetic guide frame (20) being pressed and matched with the wire grabbing block (21) through the wedge-shaped surface, the wire grabbing block (21) being provided with a groove (211), a circumferentially distributed third spring (22) being fixedly connected between the magnetic guide frame (20) and the guide frame (6), at least one electromagnet (23) being fixedly connected to the guide frame (6), the electromagnet (23) being attracted to the magnetic guide frame (20) by magnetic force, and the contact switch (7) being electrically connected to the electromagnet (23) through a control module.

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