CN213140975U

CN213140975U - Line unwinding device

Info

Publication number: CN213140975U
Application number: CN202021609471.XU
Authority: CN
Inventors: 李锦镇
Original assignee: Guangzhou Feixuan Rubber Co ltd
Current assignee: Guangzhou Feixuan Rubber Co ltd
Priority date: 2020-08-05
Filing date: 2020-08-05
Publication date: 2021-05-07
Anticipated expiration: 2030-08-05

Abstract

The utility model relates to a cotton rope unreels technical field, discloses a device is unreeled to cotton rope, include: the brake device comprises a mounting seat, a disc body rotationally connected to the mounting seat through a unreeling shaft, a cord wound on the disc body, a brake frame rotationally connected to the mounting seat through a brake shaft, a tension spring connected with the mounting seat and a first end of the brake frame, a movable pulley rotationally connected to a second end of the brake frame through a movable pulley shaft, and a fixed pulley rotationally connected to the mounting seat through a fixed pulley shaft; the wire rope on the disc body is sequentially wound on the fixed pulley and the movable pulley; the tension spring is tensioned on the mounting seat; articulated on the brake frame have be located brake block between first end of brake frame and the middle part. The utility model discloses be applied to V and take the make-up machine, the tension of cotton rope is stable when the unwrapping wire, and the cotton rope length of fashioned V area product is regular, stretch unanimous, has avoided the cotton rope to take place prematurely to collapse disconnected phenomenon, has prolonged the life of product.

Description

Line unwinding device

Technical Field

The utility model relates to a V takes make-up machine technical field, especially relates to a line unreels device.

Background

In the conventional V-belt forming machine, when the wire rope is unwound, after the brake pad of the unwinding shaft is loosened, external tension is not provided for the wire rope any more, and the tensioning of the wire rope only depends on the weak tension of the wire rope.

Therefore, the conventional V-belt forming machine produces V-belt products with slightly different lengths of cords, and during use, due to the inconsistent elongation rate caused by the difference of the lengths of the cords, the cords are prone to be broken in a part too early, so that the service life of the products is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: the utility model provides a cotton rope unwinding device that cotton rope tension is stable for V area make-up machine.

In order to achieve the purpose, the utility model provides a cord unwinding device, which comprises an installation seat, a disc body rotationally connected on the installation seat through an unwinding shaft, cords wound on the disc body, a brake frame rotationally connected on the installation seat through a brake shaft, a tension spring connecting the installation seat and the first end of the brake frame, a movable pulley rotationally connected at the second end of the brake frame through a movable pulley shaft, and a fixed pulley rotationally connected on the installation seat through a fixed pulley shaft; the wire rope on the disc body is sequentially wound on the fixed pulley and the movable pulley; the tension spring is tensioned on the mounting seat; the brake frame is hinged with a brake pad positioned between the first end and the middle part of the brake frame, and the brake frame can be switched between a first state and a second state around the brake shaft; when the brake frame is in the first state, the brake pad abuts against the unwinding shaft; when the brake frame is in the second state, the brake pad is separated from the contact with the unwinding shaft.

Furthermore, the shape of the brake pad is in an arc shape matched with the circumferential surface of the unreeling shaft, a convex block is arranged in the middle of the arc shape, and the convex block is hinged on the brake frame.

Further, the wire rope winding machine further comprises a wire roller which is rotatably connected to the mounting seat, and the wire rope winds around the wire roller before winding around the fixed pulley.

The wire rope is wound out of the wire roller, passes through the through hole and is wound on the fixed pulley.

Furthermore, a plurality of movable pulleys which are rotatably connected to the second end of the brake frame through movable pulley shafts are arranged, and a plurality of fixed pulleys which are rotatably connected to the mounting seat through fixed pulley shafts are arranged; the thread rope sequentially rounds a plurality of non-repetitive fixed pulleys and a plurality of movable pulleys, and a movable pulley is arranged between the two fixed pulleys on a winding path of the thread rope.

Further, the tension spring adjusting device is connected with the tension spring and the mounting seat and used for adjusting the tightness of the tension spring.

Furthermore, the tension spring adjuster comprises a base with a sliding groove and an adjusting rod arranged in the sliding groove in a sliding manner; the base is arranged on the mounting seat, the sliding groove extends along the extension direction of the tension spring, and the tension spring is connected to the adjusting rod; the inner wall of the sliding groove is provided with a plurality of clamping positions for fixing the adjusting rod, and the plurality of clamping positions are distributed at intervals along the extending direction of the sliding groove.

Compared with the prior art, the utility model, its beneficial effect lies in:

the utility model discloses be applied to V and take the make-up machine, the tension of cotton rope is stable when the unwrapping wire, and the cotton rope length of fashioned V area product is regular, stretch unanimous, has avoided the cotton rope to take place prematurely to collapse disconnected phenomenon, has prolonged the life of product.

Drawings

Fig. 1 is a front view of a cord unwinding device according to an embodiment of the present invention.

Fig. 2 is a side view of a cord unwinding device according to an embodiment of the present invention.

In the drawings, 1-mounting seat; 2, a tray body; 3-brake block; 4-braking the frame; 5-a brake shaft; 6-a movable pulley; 7-a tension spring; 8-a tension spring adjuster; 9-unwinding the reel; 10-a wire roller; 11-a fixed pulley; 12-guiding the positioning shaft.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1-2, the embodiment of the utility model discloses a line rope unwinding device, its characterized in that includes: the brake device comprises a mounting seat 1, a disc body 2 rotationally connected to the mounting seat 1 through a unreeling shaft 9, a cord wound on the disc body 2, a brake frame 4 rotationally connected to the mounting seat 1 through a brake shaft 5, a tension spring 7 connected with the mounting seat and a first end of the brake frame 4, a movable pulley 6 rotationally connected to a second end of the brake frame 4 through a movable pulley shaft, and a fixed pulley 11 rotationally connected to the mounting seat through a fixed pulley shaft; the rope on the disc body 2 is sequentially wound on the fixed pulley 11 and the movable pulley 6, the tension spring 7 is tensioned on the mounting seat 1, the brake frame 4 is hinged with the brake pad 3 positioned between the first end and the middle part of the brake frame 4, and the brake frame 4 can be switched between a first state and a second state around the brake shaft 5; when the brake frame 4 is in the first state, the brake pad 3 is abutted against the unwinding shaft 9, and the brake pad 3 is positioned at a position corresponding to the unwinding shaft 9; when the brake frame 4 is in the second state, the brake block 3 is separated from the contact with the unwinding shaft 9. When the brake frame 4 is transferred from the first state to the second state, the tension spring 7 is stretched to provide a force capable of moving the brake pad 3 to the unwinding shaft 9 direction, namely, a force opposite to the sliding direction of the movable pulley 6, to the first end of the brake frame 4, and when the brake frame 4 is in the first state, the tension spring 7 provides an elastic force to the brake frame 4 to keep the brake frame in the first state.

Specifically, the shape of brake block 3 be with the periphery assorted arc of unreeling axle 9, curved middle part is provided with the lug, the lug articulates on brake frame 4, brake block 3 with brake frame 4's articulated department is located between brake frame 4's first end and middle part.

Specifically, the wire rope tension device further comprises a wire roller 10 which is rotatably connected to the mounting seat 1, the wire rope passes through the wire roller 10 before passing to the fixed pulley, and the wire roller 10 provides tension for the wire rope.

Wherein, disk body 2 sets up the middle part near left position at mount pad 1, and wire roller 10 sets up the lower left corner at mount pad 1, and fixed pulley 11 sets up the lower right corner at mount pad 1, and movable pulley 6 sets up the upper right corner at mount pad 1, and when the cotton rope passed through wire roller 10, fixed pulley 11 and movable pulley 6, the cotton rope direction changed, and the direction changes and becomes bigger, and the tension that obtains when changing is bigger.

Specifically, the wire rope guiding and positioning device further comprises a guiding and positioning shaft 12 arranged on the mounting base 1, a radial through hole is formed in the guiding and positioning shaft 12, the wire rope is wound out of the wire roller 10 and then passes through the through hole and then is wound on the fixed pulley 11, and when the distance between the wire roller 10 and the fixed pulley 11 is long, the direction of the wire rope can be adjusted by the guiding and positioning shaft 12, so that the direction deviation of the wire rope is avoided.

Specifically, a plurality of movable pulleys 6 are arranged at the second end of the brake frame 4 through a movable pulley shaft, and a plurality of fixed pulleys 11 are arranged on the mounting seat 1 through a fixed pulley shaft; the cord is wound around a plurality of non-overlapping fixed pulleys 11 and a plurality of movable pulleys 6 in sequence, and one movable pulley 6 is arranged between the two fixed pulleys 11 on a winding path of the cord. That is, the number of the fixed pulleys 11 is 1 more than that of the movable pulleys 6. Preferably, 3 fixed pulleys 11 are provided. The cord extends from the wire drum 10, passes around one of the fixed pulleys 11, changes direction, extends to one of the movable pulleys 6, passes around the movable pulley 6, continues to the other fixed pulley 11, and so on until the cord extends from the last fixed pulley 11.

Specifically, the tension spring adjusting device comprises a tension spring adjuster 8 which is used for connecting the tension spring 7 with the mounting seat 1 and adjusting the tightness of the tension spring 7.

Specifically, the tension spring adjuster 8 comprises a base with a sliding groove and an adjusting rod arranged in the sliding groove in a sliding manner; the base is arranged on the mounting seat 1, the sliding groove extends along the extension direction of the tension spring 7, and the tension spring 7 is connected to the adjusting rod; the inner wall of the sliding groove is provided with a plurality of clamping positions for fixing the adjusting rod, and the plurality of clamping positions are distributed at intervals along the extending direction of the sliding groove.

The utility model discloses in the cotton rope unwinding device that preferred embodiment provided, theory of operation is:

the wire rope is wound on the disc body 2, when the wire rope is paid off, the wire rope extends out of the disc body 2 and is pulled by an external traction device, firstly passes through the guide roller 10 at the lower left corner of the mounting seat 1, the wire rope changes direction and then extends to the fixed pulley 11 at the lower right corner of the mounting seat 1, when the wire rope extends to the fixed pulley 11 through the through hole of the guide positioning shaft 12, firstly passes through the movable pulley 6 which is arranged on one of the fixed pulleys 11 and then extends upwards to the upper right corner of the mounting seat 1, and after passing through one of the movable pulleys 6, the wire rope changes direction by 180 degrees and then passes through the other fixed pulley 11 of the fixed pulley 11 again, and the process is repeated until the wire rope passes through all the fixed pulleys 11 and the movable pulleys 6 and then extends out of.

In the above process, the cord is always tensioned, and the principle of tensioning is as follows:

the cotton rope is drawn and is stretched out, and when traction force was less, brake frame 4 was in first state, and the effort of the first end of brake frame 4 of extension spring 7 to the brake frame 4 that is stretched makes the first end of brake frame 4 rotate around the pivot 5 of brake frame 4, and then makes brake block 3 compress tightly to unreeling axle 9 for the cotton rope need overcome great frictional force when being pulled out, and the pulling force that the cotton rope received this moment increases, is tensioned.

The movable pulley 6 connected to the second end of the brake frame 4 is acted by the cord, so that the second end of the brake frame 4 is acted by a downward force, when the traction force of the cord is larger, and the action force exerted on the second end of the brake frame 4 is larger than the action force exerted on the first end, the traction force is enough to tension the cord, and the second end of the brake frame 4 rotates around the rotating shaft 5, so that the brake pad 3 gradually loses the pressure on the paying-off shaft 9; and continuously increasing the traction force of the wire rope, rotating the second end of the brake frame 4 around the rotating shaft 5 to enable the first end to tilt, switching the brake frame 4 from the first state to the second state until the brake block 3 is separated from the contact with the pay-off shaft 9, and at the moment, keeping the brake frame 4 in the second state, wherein the traction force is large enough to ensure that the wire rope is tensioned.

A plurality of fixed pulleys 11 and movable pulley 6, make movable pulley 6 have a plurality of force bearing points, be convenient for movable pulley 6 atress drive brake frame 4's second end rotation.

When the tension of the cotton rope needs to be adjusted, the adjusting rod of the tension spring adjuster 8 is adjusted to enable the adjusting rod to move in the sliding groove and be fixed in different clamping positions, the acting force of the tension spring 7 on the brake frame 4 is adjusted, and then the acting force of the brake pad 3 on the unreeling shaft 9 is adjusted, so that the traction force for pulling the cotton rope is adjusted.

The utility model discloses cotton rope unwinding device is applied to V and takes the make-up machine, and the tension of cotton rope is stable when the unwrapping wire, and fashioned V takes the cotton rope length of product regular, stretch unanimous, has avoided the cotton rope to take place prematurely to collapse disconnected phenomenon, has prolonged the life of product.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A cord unwinding device, comprising: the brake device comprises a mounting seat, a disc body rotationally connected to the mounting seat through a unreeling shaft, a cord wound on the disc body, a brake frame rotationally connected to the mounting seat through a brake shaft, a tension spring connected with the mounting seat and a first end of the brake frame, a movable pulley rotationally connected to a second end of the brake frame through a movable pulley shaft, and a fixed pulley rotationally connected to the mounting seat through a fixed pulley shaft;

the wire rope on the disc body is sequentially wound on the fixed pulley and the movable pulley;

the tension spring is tensioned on the mounting seat;

the brake frame is hinged with a brake block positioned between the first end and the middle part of the brake frame,

the brake frame is switchable between a first state and a second state about the brake axle;

when the brake frame is in the first state, the brake pad abuts against the unwinding shaft; when the brake frame is in the second state, the brake pad is separated from the contact with the unwinding shaft.

2. The wire rope unwinding device according to claim 1, wherein the brake pad is shaped as an arc matching with the circumferential surface of the unwinding shaft, and a projection is arranged in the middle of the arc and hinged to the brake frame.

3. A cord unwinding device according to claim 1, further comprising a wire drum rotatably connected to said mounting base, said cord being passed around said wire drum before being passed around said fixed pulley.

4. The cord unwinding device according to claim 3, further comprising a guiding and positioning shaft disposed on the mounting seat, wherein the guiding and positioning shaft is provided with a radial through hole, and the cord is wound around the fixed pulley after being wound out from the cord roller and passing through the through hole.

5. The cable unwinding device of claim 3, wherein a plurality of movable pulleys are rotatably connected to the second end of the brake frame via movable pulley shafts, and a plurality of fixed pulleys are rotatably connected to the mounting seat via fixed pulley shafts;

the thread rope sequentially rounds a plurality of non-repetitive fixed pulleys and a plurality of movable pulleys, and a movable pulley is arranged between the two fixed pulleys on a winding path of the thread rope.

6. The cord unwinding device of claim 1, further comprising a tension spring adjuster connecting the tension spring to the mounting seat for adjusting the tightness of the tension spring.

7. The wire rope unwinding device according to claim 6, wherein the tension spring adjuster comprises a base having a sliding slot and an adjusting rod slidably disposed in the sliding slot; the base is arranged on the mounting seat, the sliding groove extends along the extension direction of the tension spring, and the tension spring is connected to the adjusting rod; the inner wall of the sliding groove is provided with a plurality of clamping positions for fixing the adjusting rod, and the plurality of clamping positions are distributed at intervals along the extending direction of the sliding groove.