Cable tension adjusting device

Abstract

The utility model relates to a cable tension adjusting device which comprises a base, a positioning column and an arc-shaped guide groove concentric with the positioning column are arranged on the base, a fixed reel is arranged on one side of the arc-shaped guide groove, a first adjusting seat is arranged in the arc-shaped guide groove in a sliding mode, a sliding groove is formed in the first adjusting seat in the axial direction, and a second adjusting seat is arranged on the sliding groove in a sliding fit mode. A supporting shaft rotationally sleeved with a first lantern ring is arranged on the second adjusting base, a second lantern ring is rotationally arranged on the positioning column, the first lantern ring and the second lantern ring are connected through a first elastic piece, an adjusting reel is rotationally arranged at one end of the supporting shaft, and the first adjusting base slides in the arc-shaped guide groove; according to the cable tension adjusting device, the distance between the adjusting winding wheel and the fixed winding wheel can be greatly changed to adjust the tension of a cable, the first elastic piece can elastically adjust the gap between the adjusting winding wheel and the fixed winding wheel in a small range, the tension adjusting range can be widened, and the cable tension adjusting stability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable production technical field, concretely relates to a cable tension adjusting device. BACKGROUND

[0002] The cable extruder is the machine group that polyethylene, polyvinyl chloride etc. are extruded by heat extrusion method, and the cable extruder equipment has strict requirement to the tension control of cable when working. The cable entering the extrusion port can appear local bending or tension imbalance phenomenon, influences the extrusion flatness, and the cable is easy to collapse when the tension is too small, influences the cable quality and appearance, and the cable is easy to be stretched when the tension is too large, reduces the use performance and product quality. In order to adjust the tightness of cable, the tension adjusting device is set in the prior art to adjust, and the tension of cable is usually adjusted by changing the gap of two tension adjusting wheels, for example, the patent document with the patent application number "CN202221350496.1" discloses a tension adjusting device for coaxial cable extrusion, the tension of cable is balanced in the unwinding process by the balance of the traction force of the cable and the traction force of the terminal take-up device, the adjusting roller is balanced by the gravity, and the adjusting roller provides the downward tension to the cable. But by this way, only the gravity of adjusting roller is relied on, when the cable is thin, the cable tension is too large when the gravity of adjusting roller is large, and the cable is easy to break, and when the cable is thick, the adjusting roller also needs to be heavier to provide enough tension to the cable, so that the tension of cable is not stable in actual use, and the weight of adjusting roller is required higher. CONTENT OF UTILITY MODEL

[0003] To solve the above technical problems, the utility model provides a kind of cable tension adjusting device, it is slid in arc guide groove by adjusting mechanism first adjusting seat drive, the distance between adjusting winding wheel and fixed winding wheel can be greatly changed, and the tension of cable is adjusted, and second adjusting seat can be slid on first adjusting seat, and first elastic piece is arranged between second adjusting seat and positioning column, so that first adjusting seat can drive adjusting winding wheel to be close to or away from positioning column direction, the gap between adjusting winding wheel and fixed winding wheel is adjusted by small amplitude elasticity, not only the range of tension adjustment can be improved, but also the stability of cable tension adjustment is improved.

[0004] The utility model provides a kind of cable tension adjusting device for solving above-mentioned technical problem, including base, the base is equipped with positioning column and the arc guide groove with the positioning column same center, the one side of arc guide groove is equipped with fixed winding wheel,

[0005] The first adjusting seat is slidably arranged in the arc-shaped guide groove, and the first adjusting seat is slidably arranged through an adjusting mechanism, an axial direction of the first adjusting seat is provided with a sliding groove, an axis of the sliding groove passes through the center of the positioning column, a second adjusting seat is slidably arranged on the sliding groove, the second adjusting seat is provided with a supporting shaft, a first ring is rotatably arranged on the supporting shaft, a second ring is rotatably arranged on the positioning column, the first ring and the second ring are connected through a first elastic member, and an adjusting winding wheel is rotatably arranged on one end of the supporting shaft away from the second adjusting seat.

[0006] Further, the adjusting mechanism comprises an adjusting disc coaxially arranged with the positioning column, the adjusting disc is located on the side of the base away from the positioning column and is fixed with the first adjusting seat through a connecting block, the adjusting disc is provided with a worm gear, the base is provided with a worm shaft engaged with the worm gear, and one end of the worm shaft is fixed with the output end of the rotary motor.

[0007] Further, the adjusting disc and the base are connected through a bearing.

[0008] Further, the first ring is further provided with a second elastic member on the side away from the positioning column, the other end of the second elastic member is fixed with a baffle located at one end of the sliding groove away from the positioning column, and the baffle is fixed with the first adjusting seat.

[0009] Further, the fixed winding wheel and the adjusting winding wheel are both provided with a winding groove.

[0010] Further, the side wall of the arc-shaped guide groove is provided with an inner groove, a plurality of balls are arranged in the inner groove, and the first adjusting seat is provided with a protrusion matched with the inner groove.

[0011] Further, the two ends of the base are further rotatably provided with an input guide wheel and an output guide wheel through a support.

[0012] Further, the arc-shaped guide groove is a semicircular groove.

[0013] The base is used for supporting the device, the positioning column is arranged with the arc-shaped guide groove at the same center, the fixed winding wheel is arranged on one side of the arc-shaped guide groove, when the first adjusting seat slides in the arc-shaped guide groove, the adjusting winding wheel arranged thereon can rotate around the positioning column, the distance between the fixed winding wheel and the adjusting winding wheel is adjusted, and then the tension of the cable is adjusted, when the first adjusting seat moves away from the fixed winding wheel in the arc-shaped guide groove, the tension becomes larger, and when the first adjusting seat moves towards the fixed winding wheel, the tension becomes smaller.

[0014] The adjusting winding wheel is arranged on the second adjusting seat through the support shaft, and the second adjusting seat can slide along the sliding groove arranged on the first adjusting seat, so that the second adjusting seat drives the adjusting winding wheel to slide towards the positioning column or away from the positioning column, the distance between the second adjusting seat and the positioning column is increased or decreased, when the second adjusting seat drives the adjusting winding wheel to move towards the positioning column, the distance between the adjusting winding wheel and the fixed winding wheel is decreased, and when the second adjusting seat moves away from the positioning column, the distance between the adjusting winding wheel and the fixed winding wheel is increased.

[0015] The first elastic member arranged between the positioning column and the second adjusting seat can adapt to the change of the cable tension, can play a buffering role when the cable tension is greatly adjusted, and can also be used for small-range tension adjustment, when the tension is too large, the first elastic member is compressed to absorb part of the tension, and the distance between the adjusting winding wheel and the fixed winding wheel is decreased, and when the tension is small, the first elastic member releases elastic potential energy, and the distance between the adjusting winding wheel and the fixed winding wheel is increased.

[0016] In summary, by adopting the adjusting mechanism, the first adjusting seat can slide in the arc-shaped guide groove, the distance between the adjusting winding wheel and the fixed winding wheel can be greatly changed to adjust the cable tension, the second adjusting seat can slide on the first adjusting seat, the first elastic member is arranged between the second adjusting seat and the positioning column, the first adjusting seat can drive the adjusting winding wheel to move towards or away from the positioning column, small-range elastic adjustment is performed on the distance between the adjusting winding wheel and the fixed winding wheel, the range of tension adjustment is improved, and the stability of the cable tension adjustment is improved.

[0017] The utility model will be further described in connection with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is cross section structure schematic diagram of the utility model;

[0019] Figure 2 It is front view of the utility model;

[0020] Figure 3 It is rear view of the utility model;

[0021] Figure 4 It is Figure 1 Detail enlarged view of A.

[0022] In the attached diagram: 1-base, 11-arc guide groove, 111-inner groove, 112-ball bearing, 2-positioning post, 21-second collar, 3-fixed winding wheel, 31-winding groove, 4-first adjusting seat, 41-slide groove, 42-protrusion, 5-adjusting mechanism, 51-adjusting disc, 511-connecting block, 52-worm gear, 53-worm, 54-rotary motor, 55-bearing, 6-second adjusting seat, 61-support shaft, 62-first collar, 63-baffle, 64-first elastic element, 65-second elastic element, 7-adjusting winding wheel, 8-input guide wheel, 9-output guide wheel. Detailed Implementation

[0023] Referring to the accompanying drawings, the specific embodiments of this utility model will be described in detail.

[0024] Reference Figures 1 to 4 This utility model provides an embodiment of a cable tension adjusting device. The cable tension adjusting device includes a base 1, on which a positioning post 2 and an arc-shaped guide groove 11 concentric with the positioning post 2 are provided. A fixed winding wheel 3 is provided on one side of the arc-shaped guide groove 11. Further, the arc-shaped guide groove 11 is a semi-circular groove, wherein the extension line of the chord corresponding to the semi-circular groove passes through the center of the fixed winding wheel 3 to increase the tension adjustment range.

[0025] The first adjusting seat 4 is slidably disposed within the arc-shaped guide groove 11. Furthermore, the side wall of the arc-shaped guide groove 11 is provided with an inner groove 111, and a plurality of balls 112 are disposed within the inner groove 111. The first adjusting seat 4 is provided with a protrusion 42 that cooperates with the inner groove 111. In this manner, the cooperation between the inner groove 111 and the protrusion 42 can prevent the first adjusting seat 4 from moving within the arc-shaped guide groove 11, thus ensuring structural stability. The arrangement of the balls 112 also prevents the first adjusting seat 4 from getting stuck within the arc-shaped guide groove 11.

[0026] The first adjusting seat 4 slides through the adjusting mechanism 5, and the first adjusting seat 4 is provided with an adjusting winding wheel 7.

[0027] Furthermore, the two ends of the base 1 are also equipped with an input guide wheel 8 and an output guide wheel 9 rotatably mounted on a bracket. The guide wheels guide the cable and further ensure the stability of the cable movement.

[0028] Furthermore, both the fixed winding wheel 3 and the adjustable winding wheel 7 are provided with winding grooves 31. The winding grooves 31 limit the cable, reduce the possibility of it moving around on the winding wheel, and ensure the stability of the cable movement.

[0029] In this way, when the first adjusting seat 4 slides in the arc-shaped guide groove 11, it can drive the adjusting winding wheel 7 arranged thereon to rotate around the positioning column 2, adjust the distance between the adjusting winding wheel 7 and the fixed winding wheel 3, and further adjust the tension of the cable. When the first adjusting seat 4 moves away from the fixed winding wheel 3 in the arc-shaped guide groove 11, the tension becomes larger. When the first adjusting seat 4 moves towards the fixed winding wheel 3, the tension becomes smaller.

[0030] In some embodiments, the adjusting mechanism 5 comprises an adjusting disc 51 coaxially arranged with the positioning column 2. The adjusting disc 51 is located on the side of the base 1 away from the positioning column 2 and is fixed with the first adjusting seat 4 through a connecting block 511. Further, the adjusting disc 51 and the base 1 are connected through a bearing 55, which can ensure the stability of the adjusting disc 51 on the base 1 and reduce the wear between the adjusting disc 51 and the base 1.

[0031] The adjusting disc 51 is provided with a worm gear 52, and the base 1 is provided with a worm shaft 53 engaged with the worm gear 52. One end of the worm shaft 53 is fixed with the output end of a rotary motor 54. Preferably, the rotary motor 54 in the embodiment can adopt a servo motor. At this time, the worm shaft 53 is driven to rotate by the rotary motor 54, and the adjusting disc 51 is further driven to rotate by the worm gear 52. When the adjusting disc 51 rotates, the first adjusting seat 4 slides in the arc-shaped guide groove 11 and moves towards or away from the fixed winding wheel 3. In this way, the rotation angle of the adjusting disc 51 can be controlled, and the position of the first adjusting seat 4 can be limited by the self-locking characteristics of the worm gear 52 and the worm shaft 53, so that the first adjusting seat 4 is fixed in the arc-shaped guide groove 11, and the position of the adjusting winding wheel 7 is stable.

[0032] In some embodiments, the first adjusting seat 4 is provided with a sliding groove 41 in the axial direction, and the axis of the sliding groove 41 passes through the center of the positioning column 2. The second adjusting seat 6 is slidingly fitted on the sliding groove 41. The second adjusting seat 6 can drive the adjusting winding wheel 7 to slide towards or away from the positioning column 2, so that the distance between the second adjusting seat 6 and the positioning column 2 becomes larger or smaller.

[0033] The second adjusting seat 6 is provided with a supporting shaft 61, the first collar 62 is rotatably arranged on the supporting shaft 61, the second collar 21 is rotatably arranged on the positioning column 2, the first collar 62 and the second collar 21 are connected through the first elastic member 64, and the supporting shaft 61 is rotatably provided with the adjusting winding wheel 7 at one end away from the second adjusting seat 6. At this time, the first elastic member 64 is arranged between the positioning column 2 and the second adjusting seat 6, when the cable is wound on the fixed winding wheel 3 and the adjusting winding wheel 7, the first elastic member 64 can adapt to the change of the cable tension, can play a buffering role when the cable tension is greatly adjusted, and can also be used for small-range tension adjustment. When the tension is too large, the first elastic member 64 is compressed, part of the tension is absorbed, the second adjusting seat 6 drives the adjusting winding wheel 7 to move towards the positioning column 2, and the spacing between the adjusting winding wheel 7 and the fixed winding wheel 3 becomes smaller. When the tension is small, the first elastic member 64 releases the elastic potential energy, the second adjusting seat 6 moves away from the positioning column 2, and the spacing between the adjusting winding wheel 7 and the fixed winding wheel 3 becomes larger.

[0034] In some embodiments, the first collar 62 is further provided with a second elastic member 65 away from the positioning column 2, one end of the second elastic member 65 is fixed to the baffle 63 away from the positioning column 2, and the other end of the second elastic member 65 is fixed to the baffle 63 away from the positioning column 2. The baffle 63 is fixed to the first adjusting seat 4. Through the arrangement of the second elastic member 65, when the first elastic member 64 is compressed, the second elastic member 65 is stretched, and when the first elastic member 64 is stretched, the second elastic member 65 is compressed, so as to reduce the loss of the cable caused by sudden change of the tension and ensure the stability of the tension.

[0035] In use, the cable is introduced into the device through the input guide wheel 8, wound on the fixed winding wheel and the adjusting winding wheel in sequence, and then introduced out of the device through the output guide wheel 9. When the tension of the cable needs to be adjusted, the rotating motor 54 is started to drive the worm 53 to rotate, and then drive the adjusting disc 51 to rotate, drive the first adjusting seat 4 to slide in the arc-shaped guide groove 11, change the spacing between the fixed winding wheel 3 and the adjusting winding wheel 7, and then change the size of the cable tension. During the adjustment process, due to the arrangement of the first elastic member 64 and the second elastic member 65, the spacing between the fixed winding wheel 3 and the adjusting winding wheel 7 can be automatically adjusted in a small range, and then the size of the cable tension can be elastically adjusted, so as to avoid the influence on the cable when the tension is suddenly increased or decreased during the adjustment process. Furthermore, after the adjustment is completed, the first elastic member 64 and the second elastic member 65 can also automatically elastically adjust the size of the cable tension during the operation of the device, so as to ensure the stability of the cable tension.

[0036] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0037] The above only describes the preferred embodiments of the utility model, and is not used to limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A cable tension adjusting device, characterized in that, Includes a base (1), on which a positioning post (2) and an arc-shaped guide groove (11) concentric with the positioning post (2) are provided. A fixed winding wheel (3) is provided on one side of the arc-shaped guide groove (11). A first adjusting seat (4) is slidably provided in the arc-shaped guide groove (11). The first adjusting seat (4) slides through the adjusting mechanism (5). The first adjusting seat (4) is provided with a sliding groove (41) along the axial direction. The axis of the sliding groove (41) passes through the center of the positioning column (2). A second adjusting seat (6) is slidably fitted on the sliding groove (41). A support shaft (61) is provided on the second adjusting seat (6). A first collar (62) is rotatably provided on the support shaft (61). A second collar (21) is rotatably provided on the positioning column (2). The first collar (62) and the second collar (21) are connected by a first elastic element (64). An adjusting winding wheel (7) is rotatably provided at the end of the support shaft (61) away from the second adjusting seat (6).

2. The cable tension adjusting device according to claim 1, characterized in that, The adjustment mechanism (5) includes an adjustment disc (51) coaxially arranged with the positioning column (2). The adjustment disc (51) is located on the side of the base (1) away from the positioning column (2) and is fixed to the first adjustment seat (4) by a connecting block (511). The adjustment disc (51) is provided with a worm gear (52), and the base (1) is provided with a worm (53) meshing with the worm gear (52). One end of the worm (53) is fixed to the output end of the rotary motor (54).

3. The cable tension adjusting device according to claim 2, characterized in that, The adjusting disc (51) is connected to the base (1) via a bearing (55).

4. The cable tension adjusting device according to claim 1, characterized in that, A second elastic element (65) is provided on the side of the first collar (62) away from the positioning post (2). The other end of the second elastic element (65) is fixed to a baffle (63) located at the end of the slide groove (41) away from the positioning post (2). The baffle (63) is fixed to the first adjusting seat (4).

5. The cable tension adjusting device according to claim 1, characterized in that, Both the fixed winding wheel (3) and the adjustable winding wheel (7) are provided with winding grooves (31).

6. The cable tension adjusting device according to claim 1, characterized in that, The side wall of the arc-shaped guide groove (11) is provided with an inner groove (111), and a plurality of balls (112) are provided in the inner groove (111). The first adjusting seat (4) is provided with a protrusion (42) that cooperates with the inner groove (111).

7. The cable tension adjusting device according to claim 1, characterized in that, The base (1) is also equipped with an input guide wheel (8) and an output guide wheel (9) at both ends via a bracket.

8. The cable tension adjusting device according to claim 1, characterized in that, The arc-shaped guide groove (11) is a semi-circular groove.

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