Double-bow belt stranding mechanism and stranding device

Abstract

The utility model relates to a double-bow-belt wire twisting mechanism and a wire twisting device, the double-bow-belt wire twisting mechanism comprises an outer bow belt and an inner bow belt arranged at the inner side of the outer bow belt, a connecting line between two ends of the outer bow belt is coaxial with a connecting line between two ends of the inner bow belt, and the outer bow belt and the inner bow belt are rotatably arranged in opposite directions around the connecting line between the two ends; a first guide wheel and a second guide wheel are respectively arranged at two ends of the outer bow belt, a third guide wheel and a fourth guide wheel are respectively arranged at two ends of the inner bow belt, the first guide wheel and the fourth guide wheel are positioned at the same end, and the second guide wheel and the third guide wheel are positioned at the same end; a cable is led in from the first guide wheel and bypasses the second guide wheel along the outer bow belt, and the cable enters and bypasses the third guide wheel along the rotation axis of the outer bow belt and the inner bow belt and bypasses the fourth guide wheel along the inner bow belt. The wire twisting device comprises the double-bow-belt wire twisting mechanism and further comprises a meter counter, a tensiometer, a wire twisting die hole and a wire arranging assembly. According to the scheme, the stranding efficiency can be multiplied under the condition that the existing limit rotating speed of the device is kept unchanged.

Description

Technical Field

[0001] The utility model belongs to the field of stranding equipment for manufacturing conductors and cables, and in particular relates to a double-bow-belt stranding mechanism and a stranding device. Background Art

[0002] High-speed stranding machines, also known as wire bundlers, are key equipment in wire and cable manufacturing. They are used to twist multiple individual conductors into a single strand to meet specific process requirements. They are used in industries such as wire and cable, aerospace, automotive manufacturing, and electronics to meet various wire processing needs. Currently, the industry's demand for high-efficiency and low-energy equipment is increasing.

[0003] The structure of the stranding machine is similar to the solution disclosed in the patent application number CN201120555216.6. It has a pair of bow belts, and a left guide wheel and a right guide wheel are respectively provided at both ends of one of the bow belts. When stranding, multiple strands of cables are passed through the right guide wheel, and the multiple strands of cables are introduced into the left guide wheel along the bow belt. The bow belt is driven to rotate around the axes of the two main shafts by coaxially arranging the left and right main shafts, so that the multiple strands of cables are stranded once on the left guide wheel and the right guide wheel respectively, that is, the bow belt rotates one circle, and the cables are stranded twice. The above is the working principle of the currently commonly used stranding machine.

[0004] Taking the commonly used 500# high-efficiency stranding machine as an example, a spindle speed of 3000 rpm is the current maximum speed for high-speed stranding machines, while ensuring stability, noise, and vibration requirements. Therefore, increasing stranding efficiency by increasing the spindle speed is no longer feasible with current technology. Therefore, structural improvements are currently required to overcome the limitations imposed by spindle speed on stranding efficiency. Utility Model Content

[0005] In order to solve the deficiencies of the existing technology, the utility model provides a double-bow-belt stranding mechanism and a stranding device, which can multiply the stranding efficiency while keeping the existing maximum speed of the device unchanged, or multiply the speed of the device while maintaining the same stranding efficiency.

[0006] In order to achieve the purpose of this utility model, the following scheme is proposed:

[0007] A double-bow-band twisting mechanism comprises an outer bow band and an inner bow band disposed inside the outer bow band, wherein the line connecting the ends of the outer bow band and the line connecting the ends of the inner bow band are coaxial, and the outer bow band and the inner bow band are arranged to rotate in opposite directions around the line connecting the ends;

[0008] The outer bow belt is provided with a first guide wheel and a second guide wheel at both ends, and the inner bow belt is provided with a third guide wheel and a fourth guide wheel at both ends. The first guide wheel and the fourth guide wheel are at the same end, and the second guide wheel and the third guide wheel are at the same end.

[0009] The cable is introduced from the first guide wheel and passes around the second guide wheel along the outer bow band. The cable enters and passes around the third guide wheel along the rotation axis of the outer bow band and the inner bow band, and passes around the fourth guide wheel along the inner bow band.

[0010] The stranding device includes the above-mentioned double-bow-belt stranding mechanism, and also includes a meter, a tension meter, a stranding die eyelet and a wire arrangement component.

[0011] The beneficial effect of this utility model is that by providing outer and inner bow bands for threading the cable, the outer and inner bow bands rotate one circle, completing four twists of the cable. Compared with existing equipment, the number of twists is increased exponentially, thus doubling the twisting efficiency of the device based on the existing speed. Similarly, if the existing twisting efficiency is maintained, the speed of the twisting mechanism can be reduced exponentially, thereby reducing energy consumption and equipment wear, extending the service life of the equipment, and effectively controlling noise and vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present invention.

[0013] Figure 1 The structure and principle diagram of the double-bow-belt twisting device of the present application are shown.

[0014] Figure 2 The figure shows the overall structure of the double-bow-belt twisting device of the present application.

[0015] Figure 3 A cross-sectional view of a preferred embodiment of the double-bow belt twisting mechanism of the present application is shown.

[0016] Figure 4 A schematic diagram of the external structure of a preferred embodiment of the double-bow belt twisting mechanism of the present application is shown.

[0017] Figure 5 A schematic diagram of a preferred solution of the reverse transmission mechanism is shown.

[0018] Markings in the figure: first guide wheel 101, second guide wheel 102, third guide wheel 103, fourth guide wheel 104, outer bow belt 11, outer sleeve 111, driving gear 112, inner bow belt 12, inner sleeve 121, driven gear 122, intermediate gear 13, restraining ring 14, reverse transmission mechanism 2, meter counter 3, tension meter 4, stranding die 5, and cable arrangement assembly 6. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the implementation methods of the present invention are described in detail below with reference to the accompanying drawings. However, the embodiments described in the present invention are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Example 1, as Figures 1 to 4 As shown, a double bow belt twisting mechanism includes: an outer bow belt 11 and an inner bow belt 12 arranged on the inner side of the outer bow belt 11, the connecting line between the two ends of the outer bow belt 11 and the connecting line between the two ends of the inner bow belt 12 are coaxial, and the outer bow belt 11 and the inner bow belt 12 are arranged to rotate in opposite directions around the connecting line between the two ends.

[0021] The outer bow belt 11 is provided with a first guide wheel 101 and a second guide wheel 102 at both ends, and the inner bow belt 12 is provided with a third guide wheel 103 and a fourth guide wheel 104 at both ends. The first guide wheel 101 and the fourth guide wheel 104 are located at the same end, and the second guide wheel 102 and the third guide wheel 103 are located at the same end. In a specific implementation, the first guide wheel 101, the second guide wheel 102, the third guide wheel 103 and the fourth guide wheel 104 can be a single wheel, such as Figure 3 As shown, the first guide wheel 101, the second guide wheel 102, the third guide wheel 103 and the fourth guide wheel 104 can also be a wheel group composed of multiple wheels, whose main purpose is to guide the cable to pass through a predetermined position and make the cable threading trajectory form a predetermined arc change at this position, so that the cable can be twisted at this position by rotating the outer bow band 11 and the inner bow band 12.

[0022] The cable is introduced from the first guide wheel 101 and passes around the second guide wheel 102 along the outer bow band 11. The cable enters and passes around the third guide wheel 103 along the rotation axis of the outer bow band 11 and the inner bow band 12, and passes around the fourth guide wheel 104 along the inner bow band 12.

[0023] After laying the multiple strands of cable, when the outer bow belt 11 and the inner bow belt 12 rotate one circle in opposite directions around the line connecting the two ends, the multiple strands of cable are twisted once at the first guide wheel 101, the second guide wheel 102, the third guide wheel 103 and the fourth guide wheel 104 respectively, that is, the outer bow belt 11 and the inner bow belt 12 rotate one circle in opposite directions at the same time, so that the cable can be twisted four times. Compared with the existing equipment, the number of twists is increased exponentially, so that the twisting efficiency can be doubled on the basis of the existing spindle speed; similarly, while maintaining the existing twisting efficiency, the speed of the twisting mechanism can be reduced exponentially, thereby reducing energy consumption and equipment wear, extending the service life of the equipment, and effectively controlling noise and vibration.

[0024] Preferably, Figure 3As shown, both ends of the outer bow band 11 are coaxially provided with an outer sleeve 111, and both ends of the inner bow band 12 are coaxially provided with an inner sleeve 121. The inner sleeve 121 and the outer sleeve 111 are coaxial with the rotation axis of the outer bow band 11 and the inner bow band 12. The inner sleeve 121 and the outer sleeve 111 are both tubular structures, and the interior is used for threading cables. The two inner sleeves 121 are located between the two outer sleeves 111. A reverse transmission mechanism 2 is provided between the outer sleeve 111 and the inner sleeve 121 at the same end of the outer bow band 11 and the inner bow band 12, which is used to drive the outer sleeve 111 and the inner sleeve 121 to rotate in opposite directions around a common axis.

[0025] There are multiple implementation options for the reverse transmission mechanism 2:

[0026] Option 1: A conical gear disc is provided at the opposite end of the outer sleeve 111 and the inner sleeve 121 at the same end. The two conical gear discs are coaxial and the cone tops are arranged opposite to each other. The two conical gear discs are engaged with the opposite sides of the same conical gear. The conical gear is set as the driving wheel, and the conical gear is directly or indirectly connected to the driving motor. In this way, the two conical gear discs can be driven to rotate simultaneously through the conical gear, and the rotation directions are opposite, thereby causing the outer bow belt 11 and the inner bow belt 12 to rotate in opposite directions around the rotation axis.

[0027] Option 2, such as Figure 5 As shown, the reverse transmission mechanism 2 includes: a driving gear 112 coaxially arranged on the outer sleeve 111, a driven gear 122 coaxially arranged on the inner sleeve 121, and a pair of mutually meshing intermediate gears 13, the driving gear 112 and the driven gear 122 are respectively meshed with one of the intermediate gears 13, and are spaced apart from the other intermediate gear 13; specifically, the driving gear 112 can be sleeved on the outside of the outer sleeve 111, which can reduce the axial installation size of the double-bow-belt twisting mechanism, and can also be set on the end of the outer sleeve 111 and the inner sleeve 121 at the opposite end, which can reduce the radial installation size of the double-bow-belt twisting mechanism; similarly, the driven gear 122 can be sleeved on the outside of the inner sleeve 121, and can also be set on the end of the inner sleeve 121 and the outer sleeve 111 at the opposite end.

[0028] At least one outer sleeve 111 is located at one end outside the outer bow band 11 and is connected to a driving device, and the driving device drives the outer sleeve 111 connected thereto to rotate around its own axis through gear transmission, chain transmission or belt transmission; when the outer sleeve 111 rotates, the driving gear 112 will rotate around the axis together with the outer sleeve 111 in the same direction, and the driving gear 112 drives the intermediate gear 13 meshed with it to rotate in the opposite direction, and the intermediate gear 13 will drive the intermediate gear 13 meshed with the driven gear 122 to rotate in the same direction as the driving gear 112, and the driven gear 122 will rotate in the opposite direction to the driving gear 112, so that the inner sleeve 121 and the outer sleeve 111 rotate around the same axis and in opposite directions, thereby achieving the purpose of the outer bow band 11 and the inner bow band 12 rotating in opposite directions around the rotation axis.

[0029] As a preferred driving method, separate driving devices may be provided for the two outer sleeves 111 .

[0030] As another preferred structure, the same driving device is used to synchronously drive the two outer sleeves 111 at the same time. For example, the driving device is used to drive the same rotating rod to rotate, the axis of the rotating rod is parallel to the axis of the outer sleeve 111, and the two ends of the rotating rod are respectively connected to the two outer sleeves 111 by belt drive or chain drive.

[0031] When threading the cable, the cable first passes through the outer sleeve 111 at the corresponding end of the first guide wheel 101, bypasses the first guide wheel 101, is laid along the outer bow band 11, bypasses the second guide wheel 102, and then passes through the outer sleeve 111 corresponding to the second guide wheel 102, and then enters the inner sleeve 121 set at the same end of the third guide wheel 103, bypasses the third guide wheel 103, and then is laid along the inner bow band 12, bypasses the fourth guide wheel 104, and finally passes out from the inner sleeve 121 set at the same end of the fourth guide wheel 104 toward one end inside the inner bow band 12.

[0032] Preferably, Figures 2 to 5 As shown, a pair of outer bow bands 11 and inner bow bands 12 are symmetrically provided relative to the axis of rotation, so as to improve the dynamic balance of the twisting mechanism during rotation; as a preferred structure, the same end of the outer bow band 11 is connected to the same rotating structural member, which is the outer sleeve 111; the same end of the inner bow band 12 is also connected to the same rotating structural member, which is the inner sleeve 121. The two rotating structural members are independent and coaxial parts.

[0033] Preferably, Figure 5 As shown, the outer bow band 11 and the inner bow band 12 are both provided with a plurality of restraint rings 14 arranged along their own tracks for threading cables, so as to allow the cables to be threaded along the outer bow band 11 and the inner bow band 12 respectively, thereby preventing the cables from being scattered or interfering with other structures.

[0034] Preferably, Figure 3 As shown, multiple guide wheels are provided at both ends of the outer bow belt 11 and the inner bow belt 12, and the guide wheels are arranged along an arc track to transmit the cable along a predetermined arc track, while improving the smoothness of the cable passing through, so as to accurately control the tension of the cable and avoid local bending of the cable.

[0035] Example 2, as Figure 1 As shown, a wire stranding device includes the double-bow-belt wire stranding mechanism described in Example 1, and also includes a meter counter 3, a tension meter 4, a stranding eyelet 5, and a wire arrangement assembly 6 arranged between the third guide wheel 103 and the fourth guide wheel 104, which are arranged in sequence along the rotation axis of the outer bow belt 11 and the inner bow belt 12 to the outside of the first guide wheel 101. The cable enters the wire arrangement assembly 6 after passing through the fourth guide wheel 104; wherein the meter counter 3 is used to monitor the passing length of the cable, the tension meter 4 is used to monitor the tension of the cable, the stranding eyelet 5 is used to pass multiple strands of cable, and the wire arrangement assembly 6 has the same function as the wire arrangement mechanism disclosed in the patent application number 201120555216.6, both of which are used to lay the cables that have completed the stranding process on the cable reel; the cable reel is usually rotatably arranged below the wire arrangement assembly 6, and the rotation axis of the cable reel is parallel to the rotation axis of the outer bow belt 11 and the inner bow belt 12; specifically, the cable reel can be set on a separate bracket.

[0036] The above description is only a preferred embodiment of the present invention and does not represent the only embodiment or limit the present invention. It should be understood by those skilled in the art that various changes or equivalent replacements made to the present invention without departing from the scope of the present invention are within the scope of protection of the present invention.

Claims

1. A double-bow belt twisting mechanism, characterized in that: include: An outer bow band (11) and an inner bow band (12) provided inside the outer bow band (11), wherein a line connecting the two ends of the outer bow band (11) and a line connecting the two ends of the inner bow band (12) are coaxial, and the outer bow band (11) and the inner bow band (12) are arranged to rotate in opposite directions around the line connecting the two ends; The outer bow belt (11) is provided with a first guide wheel (101) and a second guide wheel (102) at both ends, and the inner bow belt (12) is provided with a third guide wheel (103) and a fourth guide wheel (104) at both ends. The first guide wheel (101) and the fourth guide wheel (104) are located at the same end, and the second guide wheel (102) and the third guide wheel (103) are located at the same end. The cable is introduced from the first guide wheel (101) and passes around the second guide wheel (102) along the outer bow belt (11). The cable enters and passes around the third guide wheel (103) along the rotation axis of the outer bow belt (11) and the inner bow belt (12), and passes around the fourth guide wheel (104) along the inner bow belt (12).

2. A double-bow belt twisting mechanism according to claim 1, characterized in that: Both ends of the outer bow band (11) are coaxially provided with outer sleeves (111), and both ends of the inner bow band (12) are coaxially provided with inner sleeves (121). The inner sleeve (121) and the outer sleeve (111) are coaxial with the rotation axis of the outer bow band (11) and the inner bow band (12). The inner sleeve (121) and the outer sleeve (111) are both tubular structures, and the interior is used for passing cables. The two inner sleeves (121) are located between the two outer sleeves (111). A reverse transmission mechanism (2) is provided between the outer sleeve (111) and the inner sleeve (121) at the same end of the outer bow band (11) and the inner sleeve (121), which is used to drive the outer sleeve (111) and the inner sleeve (121) to rotate in opposite directions around a common axis.

3. A double-bow belt twisting mechanism according to claim 2, characterized in that: The reverse transmission mechanism (2) comprises: A driving gear (112) coaxially arranged on the outer sleeve (111), a driven gear (122) coaxially arranged on the inner sleeve (121), and a pair of mutually meshing intermediate gears (13), wherein the driving gear (112) and the driven gear (122) are respectively meshed with one of the intermediate gears (13) and are spaced apart from the other intermediate gear (13); One end of at least one outer sleeve (111) located outside the outer bow band (11) is connected to the driving device.

4. A double-bow belt twisting mechanism according to claim 1 or 2, characterized in that: A pair of outer bow bands (11) and inner bow bands (12) are symmetrically provided relative to the axis of rotation.

5. The double-bow belt twisting mechanism according to claim 1, characterized in that: The outer bow band (11) and the inner bow band (12) are both provided with a plurality of restraint rings (14) arranged along their own tracks for threading cables.

6. A double-bow belt twisting mechanism according to claim 1, characterized in that: Both ends of the outer bow band (11) and the inner bow band (12) are provided with a plurality of guide wheels, and the guide wheels are arranged along an arc track.

7. A wire stranding device, characterized in that: The double-bow-belt stranding mechanism comprises any one of claims 1 to 6, and further comprises a meter (3), a tension meter (4), a stranding eyelet (5) and a cable arrangement assembly (6) arranged between the third guide wheel (103) and the fourth guide wheel (104) along the rotation axis of the outer bow belt (11) and the inner bow belt (12) to the outside of the first guide wheel (101), wherein the cable passes around the fourth guide wheel (104) and then enters the cable arrangement assembly (6).

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