Traction control system and method for mineral flame-retardant cable production

Abstract

The invention provides a traction control system and method for mineral flame-retardant cable production, and relates to the technical field of cable equipment.The traction control system comprises an upper circulation track and a lower circulation track, two parallel linear tracks are arranged in the middle of the track, and arc-shaped tracks connected with the two parallel linear tracks are arranged at the two ends of the track; the circular-arc-shaped track is inclined relative to the linear track in the horizontal direction, a cable supporting tool running circularly is arranged in the track, the cable supporting tool is provided with a tool for supporting a cable section arc line, and an upper belt clamping traction mechanism and a lower belt clamping traction mechanism are changed into a circular traction structure with an upper tool and a lower tool with arc sections. The arc-shaped section tool has natural'inlet clamping 'and'outlet loosening' effects at the traction inlet and the traction outlet due to the sinking of the track of the traction mechanism, so that the traction mechanism clamps the circular interface of the whole cable, the stress is more uniform, the deformation is not easy to cause, the traction device can be closer to the final equipment, and the process is more compact and efficient.

Description

Technical Field

[0001] The invention relates to the technical field of cable production equipment, and in particular to a traction control system and method for producing mineral flame-retardant cables. Background Art

[0002] In the cable manufacturing industry, the traction control system is an indispensable key link in the cable production process, which is directly related to the quality and production efficiency of the cable. Traditional cable production traction equipment generally uses upper and lower belt clamping to pull the cable. This clamping method exposes a series of problems in the early stage of cable production, that is, when the cable material has just completed the process steps such as extrusion or braiding and has not yet been fully cooled and solidified.

[0003] Specifically, since the internal stress of the cable has not been completely released, its structure is relatively fragile. At this time, if the upper and lower belts are used for clamping and pulling, it is easy to cause the cable to be squeezed and deformed in the middle due to improper clamping force. This deformation not only affects the appearance of the cable, but more importantly, it will cause the cross-sectional shape of the cable to no longer remain a perfect circle, which in turn affects the electrical performance, transmission efficiency and service life of the cable.

[0004] In order to deal with this problem, the prior art has adopted a compromise solution, that is, by increasing the distance between the clamping position and the final equipment of the cable process forming, the cable is given more time and space to release internal stress, so that it can withstand greater clamping force without significant deformation. However, although this approach alleviates the problem of cable deformation to a certain extent, it does not fundamentally solve the defects caused by the upper and lower belt clamping method.

[0005] First, increasing the distance means that the production line needs to be extended, which not only increases production costs but also reduces production efficiency. Second, even if the distance is increased, the extrusion and deformation of the cable during the clamping process cannot be completely avoided, but the degree is reduced. In addition, for some special types of cables, such as mineral flame-retardant cables, due to their material properties and the particularity of the production process, the requirements for the traction control system are more stringent, and the traditional upper and lower belt clamping method is even more difficult to meet their production needs.

[0006] Therefore, the cable production traction control system urgently needs a new solution to overcome the defects in the existing technology and meet the growing production and use needs. Summary of the invention

[0007] The invention provides a traction control system and method for producing mineral flame-retardant cables, which solve the technical problems of existing cable production traction systems.

[0008] In order to solve the above technical problems, the technical solution adopted by the present invention is: A traction control system for the production of mineral flame-retardant cables comprises an upper circulation track and a lower circulation track which are arranged symmetrically in an upper and lower manner, two parallel straight rails being arranged in the middle of the upper circulation track and the lower circulation track, arc-shaped rails connecting the two parallel straight rails at both ends of the upper circulation track and the lower circulation track, the arc-shaped rails being inclined with respect to the straight rails in the horizontal direction, circularly running cable support tooling being arranged in the upper circulation track and the lower circulation track, the cable support tooling being arranged with tooling for supporting the arc line of the cable cross section, the cable support tooling being driven by a driving system to circulate in the upper circulation track and the lower circulation track, one of the straight rails in the upper circulation track and the lower circulation track being opposed to each other up and down, so that the cable support tooling can support and pull the cable being manufactured from the top and the bottom respectively.

[0009] The above-mentioned upper circulation track and lower circulation track structure are: It includes an outer track and an inner track arranged at equal distances, two parallel straight tracks are located between the outer track and the inner track, and arc tracks are located at both ends to connect the two parallel straight tracks; Multiple circulating support plates connected end to end are embedded between the outer track and the inner track. The cable support tooling is placed on the circulating support plates. The driving system drives the circulating support plates to circulate between the outer track and the inner track, thereby driving the cable support tooling to circulate.

[0010] The above-mentioned circulation support plate is provided with a toggle column on the other side of the cable support tooling, and the driving system drives the toggle column to realize the circulation movement of the circulation support plate and the cable support tooling.

[0011] The driving system comprises a toggle gear arranged at one side of the arc track, a toggle column on the circular support plate at the arc track is embedded in the toggle gear, and the toggle gear is driven by a driving motor to drive a driving gear set to realize rotation.

[0012] The cable supporting tool is provided with a cable arc-shaped supporting portion, and the cable arc-shaped supporting portion is provided with an arc-shaped groove body.

[0013] In the optimized solution, the upper circulation track and the lower circulation track share a driving motor, and the driving motor drives the upper and lower driving gear sets through the synchronous connecting shaft that passes through the upper and lower parts.

[0014] In the optimized solution, the cable support tooling is arranged front to back and connected end to end.

[0015] The above-mentioned circulation support plate includes a support plate body, the front and rear ends of the support plate body are respectively an inner concave arc and an outer convex arc that match each other, and the front and rear sides of the support plate body are provided with running wheels, the running wheels are embedded in the outer track and the inner track, and lateral rollers are provided on the outer side of the shaft body of the running wheel. The two circulation support plates are connected by a plate body connection system.

[0016] The above-mentioned plate connection system includes a first connector and a second connector, which are connected by a hinge. A rotating column is provided at the ends of the first connector and the second connector, and the rotating column is rotatably connected to the connecting ring on the circulating support plate. The toggle column support plate supports and limits the rotating column. The toggle column is fixedly connected to the toggle column support plate, and the hinge axis is perpendicular to the rotating column axis.

[0017] A traction method using the traction control system for producing mineral flame-retardant cables, the method comprising: Step 1: Production preparation: prepare the cable materials, start the cable production equipment and set it in the production preparation state, and manually pull and feed the produced cable ends to the traction control system until the cable ends reach the first set of cable support tooling on the linear track; Step 2: Manually turn the gear to move the first set of cable support fixtures forward until a total of N sets of cable support fixtures have clamped the cables, where N is a preset value; Step 3: Switch the cable production equipment to production operation state, and start the drive motor at the same time to make the traction control system automatically move the cable forward, so that the cable production enters an autonomous operation state.

[0018] The present invention provides a traction control system and method for producing mineral flame-retardant cables. The upper and lower belt clamping traction mechanisms are changed into a circulating traction structure with upper and lower arc-section tooling. The arc-section tooling has natural "entrance clamping" and "exit loosening" effects at the entrance and exit of the traction due to the sinking of the track of the traction mechanism. The traction mechanism clamps the entire circular interface of the cable, which is more evenly stressed and less likely to be deformed. The traction device can be brought closer to the final equipment, making the process more compact and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the structure of the cable production traction control system of the present invention; Figure 2 This is a structural diagram of the traction control system optimization scheme 1; Figure 3 This is a schematic diagram of the structure of the traction control system optimization scheme 2; Figure 4 It is a schematic diagram of the top view structure of the circulating track; Figure 5 Schematic diagram of the structure of the circular track Figure 2 ; Figure 6 It is a structural schematic diagram of the circulation support plate; Figure 7 Schematic diagram of the front and rear connections of the circulation support plate Figure 1 ; Figure 8 Schematic diagram of the front and rear connections of the circulation support plate Figure 2 ; Fig. 9 for Figure 8 A partial enlarged schematic diagram of Fig.10 is a schematic structural diagram of a first connector; Fig.11 is a schematic structural diagram of a second connector; Fig.12 It is a structural diagram of the shift gear.

[0020] Among them: upper circulation track 1, lower circulation track 2, outer track 101, inner track 102, circular arc track 103, linear track 104, cable support tooling 3, tooling support part 31, cable arc support part 32, drive system 4, toggle column 5, toggle gear 6, drive gear set 7, drive motor 8, cable 9, synchronous connecting shaft 10, circulation support plate 11, support plate body 111, inner concave arc 112, outer convex arc 113, walking wheel 114, lateral roller 115, plate body connection system 12, first connector 121, second connector 122, rotating column 13, hinge 14, connecting ring 15, toggle column support plate 16. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention clearer, the following content will systematically and completely describe the specific technical solutions of the present invention in combination with the drawings provided according to the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] A traction control system for the production of mineral flame-retardant cables comprises an upper circulation track 1 and a lower circulation track 2 which are symmetrically arranged in an upper and lower manner, wherein two parallel straight rails 104 are arranged in the middle of the upper circulation track 1 and the lower circulation track 2, and arc-shaped rails 103 connecting the two parallel straight rails 104 are arranged at both ends of the upper circulation track 1 and the lower circulation track 2, wherein the arc-shaped rails 103 are inclined with respect to the straight rails 104 in the horizontal direction, and a circularly running cable support tooling 3 is arranged in the upper circulation track 1 and the lower circulation track 2, and the cable support tooling 3 is provided with a tooling for supporting the arc of the cable cross section, and the cable support tooling 3 is driven by a driving system 4 to circulate in the upper circulation track 1 and the lower circulation track 2, and one of the straight rails 104 in the upper circulation track 1 and the lower circulation track 2 is opposed to each other up and down, so that the cable support tooling 3 supports and pulls the cable 9 being manufactured from the top and the bottom respectively.

[0023] like Figure 1-3 As shown in the figure, the arc-shaped track 103 is designed to be inclined with respect to the straight track 104 in the horizontal direction, so that along the cable pulling direction, the upper and lower cable support tooling 3 formed at the cable entrance are gradually tightened to achieve clamping and traction of the cable, and the upper and lower cable support tooling 3 formed at the outlet are gradually loosened to achieve traction and forward delivery of the cable, and the circular cross-section of the cable is fully supported by the cable support tooling 3, and no local stress will occur.

[0024] The above-mentioned upper circulation track 1 and lower circulation track 2 have the following structures: It includes an outer track 101 and an inner track 102 arranged at equal distances, two parallel straight tracks 104 are located between the outer track 101 and the inner track 102, and arc tracks 103 are located at both ends to connect the two parallel straight tracks 104; A plurality of circulating support plates 11 connected end to end are embedded between the outer rail 101 and the inner rail 102, and the cable support tooling 3 is placed on the circulating support plates 11. The driving system 4 drives the circulating support plates 11 to circulate between the outer rail 101 and the inner rail 102, thereby driving the cable support tooling 3 to circulate.

[0025] The above-mentioned circulation support plate 11 is provided with a shifting column 5 on the other side of the cable support fixture 3 , and the driving system 4 drives the shifting column 5 to realize the circulation movement of the circulation support plate 11 and the cable support fixture 3 .

[0026] The driving system 4 includes a toggle gear 6 disposed at one side of the arc track 103 , a toggle column 5 on the circulation support plate 11 at the arc track 103 is embedded in the toggle gear 6 , and the toggle gear 6 is rotated by a driving motor 8 driving a driving gear set 7 .

[0027] like Figure 1-3 As shown in the figure, the toggle gear 6 drives the toggle cylinder 5 to rotate at the arc track 103, the toggle cylinder 5 on one side enters the tooth groove of the toggle gear 6, and the toggle cylinder 5 on the other side leaves the tooth groove of the toggle gear 6, and the toggle cylinder 5 drives the circulating support plate 11 to move in a circular motion along the track formed by the outer track 101 and the inner track 102.

[0028] The cable supporting tool 3 is provided with a cable arc-shaped supporting portion 32 , and the cable arc-shaped supporting portion 32 is provided with an arc-shaped groove.

[0029] like Figure 6 As shown in the figure, the arc-shaped groove on the cable arc support part 32 is evenly supported by clamping multiple cable cross-section circles up and down, and the cable is pulled during the forward movement of the circulating support plate 11. The arc-shaped groove can fit the cable surface, play a shaping role and prevent extrusion deformation.

[0030] In the optimized solution, the upper circulation track 1 and the lower circulation track 2 share a driving motor 8, and the driving motor 8 drives the upper and lower driving gear sets 7 through the synchronous connecting shaft 10 that passes through the upper and lower parts.

[0031] like Figure 2 As shown in the figure, the upper and lower drive gear sets 7 are driven by the same drive motor 8. In addition to saving the number of motors, the upper and lower gear sets can also be operated synchronously through mechanical devices. As long as the upper and lower cable support tools 3 are aligned, the cable 9 can be clamped simultaneously from top to bottom.

[0032] In an optimized solution, the cable support tools 3 are arranged front to back and connected end to end.

[0033] like Figure 3 As shown in , the front and rear ends of the cable support tooling 3 are connected end to end so that at the linear track 104, the cable is fully wrapped by the traction part to prevent the clamping part from being sunken and the non-clamping part from protruding.

[0034] The above-mentioned circulation support plate 11 includes a support plate body 111, and the front and rear ends of the support plate body 111 are respectively matched with each other inner concave arc 112 and outer convex arc 113, and the front and rear sides of the support plate body 111 are provided with running wheels 114, and the running wheels 114 are embedded in the outer track 101 and the inner track 102. The outer side of the shaft of the running wheel 114 is provided with a lateral roller 115, and the two circulation support plates 11 are connected by a plate body connection system 12.

[0035] The above-mentioned plate connection system 12 includes a first connector 121 and a second connector 122, which are connected by a hinge 14. A rotating column 13 is provided at the ends of the first connector 121 and the second connector 122. The rotating column 13 is rotatably connected to the connecting ring 15 on the circulation support plate 11, and the column support plate 16 supports and limits the rotating column 13. The toggle column 5 is fixedly connected to the toggle column support plate 16, and the axis of the hinge 14 is perpendicular to the axis of the rotating column 13.

[0036] like Figure 8-11 As shown in the figure, by hinged connection of the first connector 121 and the second connector 122, the two front and rear circulating support plates 11 can present a horizontal angle, and the plate body can be tilted when running to the circular arc track 103. By rotating the column 13 and the front and rear inner concave arcs 112 and outer convex arcs 113 of the plate body, the front and rear plates can perform circular motion along the circular arc track 103, that is, the front and rear circulating support plates 11 can present an angle up and down, and can also form an arc on the horizontal plane.

[0037] The toggle gears 6 can be arranged on both sides of the arc-shaped tracks 103 to realize the overall “tensioning” of the circulating support plate 11 , and the driving system 4 is only arranged on one side.

[0038] A traction method using the traction control system for producing mineral flame-retardant cables, the method comprising: Step 1, production preparation, prepare the cable materials, start the cable production equipment and set it in the production preparation state, manually pull and feed the produced cable ends to the traction control system until the cable ends reach the first group of cable support tooling 3 of the linear track 104; Step 2: manually turn the gear 6 to move the first set of cable support fixtures 3 forward until a total of N sets of cable support fixtures 3 have clamped the cables 9, where N is a preset value; Step 3: Switch the cable production equipment to a production operation state, and simultaneously start the drive motor 8 to allow the traction control system to automatically move the cable 9 forward, so that the cable production enters an autonomous operation state.

Claims

1. A traction control system for the production of mineral flame-retardant cables, characterized in that: The invention comprises an upper circulation track (1) and a lower circulation track (2) which are arranged symmetrically in the upper and lower directions. Two parallel straight rails (104) are arranged in the middle of the upper circulation track (1) and the lower circulation track (2). The two ends of the upper circulation track (1) and the lower circulation track (2) are arc-shaped rails (103) which connect the two parallel straight rails (104). The arc-shaped rails (103) are inclined with respect to the straight rails (104) in the horizontal direction. The upper circulation track (1) and the lower circulation track (2) are provided with a cable support tool (3) which runs in a circular motion. The cable support tool (3) is provided with a tool for supporting the arc of the cable cross section. The cable support tool (3) is driven by a driving system (4) to circulate in the upper circulation track (1) and the lower circulation track (2). One of the straight rails (104) in the upper circulation track (1) and the lower circulation track (2) is opposed to each other in the upper and lower directions, so that the cable support tool (3) supports and pulls the cable (9) being manufactured from the upper and lower directions respectively.

2. The traction control system for producing mineral flame-retardant cables according to claim 1, characterized in that: The structures of the upper circulation track (1) and the lower circulation track (2) are as follows: It comprises an outer track (101) and an inner track (102) arranged at equal intervals, two parallel straight tracks (104) are located in the middle of the outer track (101) and the inner track (102), and arc tracks (103) are located at both ends to connect the two parallel straight tracks (104); A plurality of circulating support plates (11) connected end to end are embedded between the outer rail (101) and the inner rail (102), and the cable support tooling (3) is placed on the circulating support plates (11). The driving system (4) drives the circulating support plates (11) to move in a circular motion between the outer rail (101) and the inner rail (102), thereby driving the cable support tooling (3) to circulate.

3. The traction control system for producing mineral flame-retardant cables according to claim 2, characterized in that: The circulating support plate (11) is provided with a shifting column (5) on the other side of the cable support tooling (3), and the driving system (4) drives the shifting column (5) to realize the circulating movement of the circulating support plate (11) and the cable support tooling (3).

4. The traction control system for producing mineral flame-retardant cables according to claim 3, characterized in that: The driving system (4) comprises a toggle gear (6) arranged at one side of the circular arc track (103), a toggle column (5) on the circulation support plate (11) at the circular arc track (103) being embedded in the toggle gear (6), and the toggle gear (6) is driven by a driving motor (8) to drive a driving gear set (7) to rotate.

5. The traction control system for producing mineral flame-retardant cables according to claim 4, characterized in that: The cable supporting tool (3) is provided with a cable arc-shaped supporting portion (32), and the cable arc-shaped supporting portion (32) is provided with an arc-shaped groove body.

6. The traction control system for producing mineral flame-retardant cables according to claim 5, characterized in that: The upper circulation track (1) and the lower circulation track (2) share a driving motor (8), and the driving motor (8) drives the upper and lower driving gear sets (7) via a synchronous connecting shaft (10) that passes through the upper and lower parts.

7. The traction control system for producing mineral flame-retardant cables according to claim 5, characterized in that: The cable support tooling (3) is arranged front to back and connected end to end.

8. The traction control system for producing mineral flame-retardant cables according to claim 6, characterized in that: The circulation support plate (11) comprises a support plate body (111), the front and rear ends of the support plate body (111) respectively comprising an inner concave arc (112) and an outer convex arc (113) which match each other, the front and rear sides of the support plate body (111) are provided with running wheels (114), the running wheels (114) are embedded in the outer track (101) and the inner track (102), the outer side of the shaft of the running wheel (114) is provided with a lateral roller (115), and the two circulation support plates (11) are connected via a plate body connection system (12).

9. The traction control system for producing mineral flame-retardant cables according to claim 8, characterized in that: The plate connection system (12) comprises a first connection body (121) and a second connection body (122), wherein the first connection body (121) and the second connection body (122) are connected via a hinge (14), and a rotating column (13) is provided at the end of the first connection body (121) and the second connection body (122), wherein the rotating column (13) is rotatably connected to a connecting ring (15) on a circulation support plate (11), and a toggle column support plate (16) supports and limits the rotating column (13), and the toggle column (5) is fixedly connected to the toggle column support plate (16), and the axis of the hinge (14) is perpendicular to the axis of the rotating column (13).

10. A traction method using the traction control system for producing mineral flame-retardant cables according to claim 9, characterized in that: Methods include: Step 1, production preparation, prepare the cable materials, start the cable production equipment and set it in the production preparation state, manually pull and feed the produced cable ends to the traction control system until the cable ends reach the first set of cable support tooling (3) of the linear track (104); Step 2: manually turning the toggle gear (6) to move the first set of cable support fixtures (3) forward until a total of N sets of cable support fixtures (3) have clamped the cables (9), where N is a preset value; Step 3: The cable production equipment is switched to a production operation state, and at the same time, the drive motor (8) is started to make the traction control system automatically move the cable (9) forward, so that the cable production enters an autonomous operation state.

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