Wire rod backstop

Abstract

The utility model relates to a wire rod non-return device which comprises an offset swing block which is divided into a rotating end and a wire pressing end. The rotating end is located at one end of the offset swing block, and the wire pressing end is located at the other end of the offset swing block relative to the rotating end. The swing center of the offset swing block is located at the rotating end. An elastic element is arranged at the wire pressing end and applies downward pressure to the wire pressing end all the time; the contact part of the wire pressing end and the cable is divided into a wire passing part and a blocking part according to the passing direction of the cable. According to the wire rod backstop, the offset swing block matched with the elastic element is adopted, the locking angle is formed by the rotating end and the wire pressing end of the offset swing block, and when a wire rod moves in the forward direction, the locking angle can be increased, so that the wire rod can smoothly pass through. And when the wire rod moves back, the locking angle becomes smaller and smaller, so that the wire rod is tightly pressed by the offset swing block, and one-way movement of the wire rod is realized.

Description

Technical Field

[0001] The utility model relates to a backstop, in particular to a wire backstop. Background Art

[0002] During the production process of wire and cable, the wire backstop is one of the essential components, also known as a one-way wire passing mechanism. In the existing one-way wire passing mechanisms, pressure is applied to sponge or other flexible materials. When the wire is under pressure, it is forced to stay at the sponge or flexible material. Since the sponge will wear under long-term stress, after working for a period of time, the situation of not pressing the wire tightly will occur, resulting in problems in equipment production. Content of the Utility Model

[0003] In view of the above situation, it is necessary to provide a wire backstop that solves at least one of the above problems.

[0004] A wire backstop includes a biasing swing block, and the biasing swing block is divided into a rotating end and a wire pressing end; the rotating end is located at one end of the biasing swing block, and the wire pressing end is located at the other end of the biasing swing block relative to the rotating end;

[0005] The swing center of the biasing swing block is located at the rotating end;

[0006] An elastic element is arranged at the wire pressing end, and the elastic element always applies a downward pressure to the wire pressing end;

[0007] The part of the wire pressing end in contact with the wire and cable is divided into a wire passing part and a blocking part according to the direction of wire passing.

[0008] As a further scheme of the utility model: the wire passing part is arc-shaped, and the blocking part is right-angled.

[0009] As a further scheme of the utility model: the elastic element is a serpentine spring.

[0010] As a further scheme of the utility model: it further includes a wire passing base, and there is a through hole on the wire passing base, and the through hole is used for passing the wire;

[0011] A backstop part is further arranged on the wire passing base, and the position of the backstop part matches that of the wire pressing end.

[0012] As a further scheme of the utility model: it further includes a mounting seat, the biasing swing block is assembled on the mounting seat through a rotating shaft, and both ends of the elastic element respectively abut against the mounting seat and the biasing swing block.

[0013] As a further solution of the present utility model: It further includes a limiting shaft, the limiting shaft is arranged on the mounting seat, and the limiting shaft is used to define the mounting position of the elastic element.

[0014] As a further solution of the present utility model: It further includes a baffle plate, the baffle plate is arranged on the mounting seat, and the baffle plate is used to prevent the elastic element from loosening.

[0015] As a further solution of the present utility model: It further includes a limiting plate, the limiting plate is fixed to the bottom of the mounting seat and is used to prevent the offset swing block from loosening.

[0016] The above wire stopper adopts an offset swing block that cooperates with an elastic element. By using its rotating end and wire pressing end to form a locking angle, when the wire moves forward, the locking angle will become larger, so that the wire can pass through smoothly. When the wire moves backward, the locking angle will become smaller and smaller, so that the offset swing block presses the wire tightly, realizing the one-way movement of the wire. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0018] Figure 2 is a cross-sectional view of an embodiment of the present utility model;

[0019] Figure 3 is a schematic structural diagram of the offset swing block of an embodiment of the present utility model;

[0020] Figure 4 is a force analysis diagram of the wire moving forward;

[0021] Figure 5 is a force analysis diagram of the wire moving backward. Detailed Embodiment

[0022] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0023] In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more; the terms "center", "longitudinal", "transverse", "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0024] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.

[0025] The present utility model provides a wire stopper, as Figure 1 shown, which includes a mounting base 1 and a wire-passing base 2. The mounting base 1 is arranged on the wire-passing base 2, and a wire-passing hole 201 is provided on the wire-passing base 2, and the wire passes through the wire-passing hole 201.

[0026] In the mounting base 1, a biased swing block 3 is provided. The biased swing block 3 is fixed in the mounting base 1 through a rotating shaft 4, and the biased swing block 3 deflects with the rotating shaft 4 as the rotation center.

[0027] As Figures 1 - 3 shown, the biased swing block 3 includes a rotating part 301 and a wire-pressing part 302. Among them, the through hole on the rotating part 301 is sleeved on the rotating shaft 4, and the wire-pressing part 302 extends downward and approaches the wire-passing base 2. Specifically, the rotating part 301 and the wire-pressing part 302 are respectively at both ends of the biased swing block 3. When the biased swing block 3 deflects, the wire-pressing part 302 moves away from or approaches the wire-passing base 2.

[0028] Furthermore, an elastic element 5 is provided between the biased swing block 3 and the mounting base 1. Specifically, the elastic element is a serpentine spring. One end of the elastic element 5 is located at the inner top of the mounting base 1, and the other end is arranged at one end of the biased swing block 3 close to the wire-pressing part 302. The elastic element 5 always remains in a compressed state, that is, it always exerts a pressure on the wire-pressing part 302, so that the wire-pressing part 302 always faces the direction of the wire-passing base 2.

[0029] As shown Figure 3 in the figure, further, in the wire passing base 2, the moving direction of the wire is from the rotating part 301 towards the wire pressing part 302. On the wire pressing part 302, according to the moving direction of the wire, it is divided into a wire passing part 3021 and a blocking part 3022. The wire passing part 3021 is on the side close to the rotating part 301, and the blocking part 3022 is on the side far from the rotating part 301. The wire passing part 3021 is arc-shaped, and the blocking part 3022 is right-angled.

[0030] When the wire moves from the wire passing part 3021 towards the blocking part 3022, that is, when moving forward, as Figure 4 shown in the figure, the wire pressing part 302 is affected by the sliding friction f1 and is pushed up by the wire, and the elastic element 5 is squeezed, and the wire pressing part 302 moves away from the wire passing base 2. At this time, the wire can pass through the check valve smoothly; on the contrary, as Figure 5 shown in the figure, when the wire moves in the reverse direction, the wire pressing part 302 is affected by the sliding friction f2 and is pulled down by the wire. With the elastic force of the elastic element 5, the wire pressing part 302 is pressed down and close to the wire passing base 2. At this time, the wire pressing part 302 and the wire passing base 2 press the wire tightly. According to the Figure 4 and Figure 5 force analysis in the figure, when the wire moves in the reverse direction, the greater the reverse force, the greater the pressure of the wire pressing part 302 on the wire. In this process, the elastic element 5 provides the basic pressure, so that there is a certain sliding friction between the wire pressing part 302 and the wire, providing a good basis for the check effect. Of course, in addition to using the pressure provided by the elastic element 5, using a metal material to make the offset swing block 3 and using its own weight can also achieve the same effect.

[0031] Based on the above working principle, the offset swing block 3 can be made of wear-resistant materials such as metal, solving the disadvantage of non-wear-resistant soft materials in the traditional solution, and having a good pressing effect.

[0032] Further, on the wire passing base 2, at the position corresponding to the wire pressing part 302, a check part 201 is provided. The check part 201 is a concave pit matching the shape of the wire pressing part 302. The wire pressing part 302 presses the wire at the check part 201.

[0033] Further, as Figures 1 - 2 shown in the figure, since the elastic element 5 is a serpentine spring, on the premise of the same elasticity, its volume is smaller than that of the traditional spring, and the overall volume of the check valve can be reduced. According to its own shape characteristics, the installation part on the mounting seat 1 presents a through hole arranged horizontally. In order to limit the insertion depth of its end into the through hole to maintain the consistency of multiple springs, a limiting shaft 101 is also provided on the mounting seat 1.

[0034] Further, asFigures 1 - 2 As shown, on the mounting base 1, a baffle 6 is provided at the mounting position corresponding to the elastic element 5. Since the installation direction of the serpentine spring must be horizontal, the baffle 6 is provided behind the installation direction of the serpentine spring. The function of the baffle 6 is to limit the serpentine spring from disengaging from the installation position.

[0035] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art, without departing from the scope of the technical solution of the present invention, may make some changes or modifications using the above-disclosed technical content to obtain equivalent embodiments with equivalent changes. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A wire stopper, characterized in that: It includes a biasing swing block, and the biasing swing block is divided into a rotating end and a wire pressing end; the rotating end is located at one end of the biasing swing block, and the wire pressing end is located at the other end of the biasing swing block relative to the rotating end; The swing center of the biasing swing block is located at the rotating end; An elastic element is provided at the wire pressing end, and the elastic element always applies a downward pressure to the wire pressing end; At the part where the wire pressing end contacts the cable, according to the direction of cable passing, it is divided into a wire passing part and a blocking part.

2. The wire stopper according to claim 1, characterized in that: The wire passing part is arc-shaped, and the blocking part is right-angled.

3. The wire stopper according to claim 1, wherein: The elastic element is a serpentine spring.

4. The wire stopper according to claim 1, wherein: It further includes a wire passing base, and there is a through hole on the wire passing base, and the through hole is used for passing the wire; A reverse prevention part is further provided on the wire passing base, and the position of the reverse prevention part matches that of the wire pressing end.

5. The wire stopper according to claim 1, wherein: It further includes a mounting seat, the biasing swing block is assembled on the mounting seat through a rotating shaft, and both ends of the elastic element respectively abut against the mounting seat and the biasing swing block.

6. The wire stopper according to claim 5, wherein: It further includes a limiting shaft, the limiting shaft is arranged on the mounting seat, and the limiting shaft is used for limiting the mounting position of the elastic element.

7. The wire stopper according to claim 5, characterized in that: It further includes a baffle, the baffle is arranged on the mounting seat, and the baffle is used for preventing the elastic element from loosening.

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