Yarn clamping device capable of preventing yarn breakage
The combined structure of the tooth plate and the frame plate controls the opening and closing state of the clamping body, and clamps the yarn in stages, solving the problem that traditional yarn clamping devices are prone to breaking yarns and achieving more stable yarn grabs.
Patent Information
- Application Number
- CN202422306799.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-20
AI Technical Summary
Traditional yarn clamping devices tend to cause yarn to break when clamping yarn, and the prior art is difficult to effectively prevent such problems.
The combined structure of the tooth plate, the left clamp body, the right clamp body, the left hinge rod, the right hinge rod and the frame plate is adopted. The opening and closing state of the clamp body is indirectly controlled by controlling the relative position of the tooth plate and the frame plate. It is divided into three states: opening, limit ring yarn and locking yarn to avoid directly changing from the opening state to the locking state, reducing the change in clamping force, and reducing the risk of yarn breakage.
Through the staged clamping process, the risk of breaking of the yarn during clamping is reduced, and the stability and integrity of the yarn is improved.
Smart Images
Figure CN223150757U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of yarn clamping devices, and specifically to a yarn clamping device for preventing yarn breakage. Background Art
[0002] Traditional yarn clamping devices mostly use a cam structure to push to achieve the automatic opening and closing of the yarn clamping device. Although this structure can well achieve automatic yarn clamping, when the yarn clamping device extends upward and clamps the yarn, that is, in the clamped state, it is very easy to break the yarn in the state of instant clamping. Summary of the Utility Model
[0003] The utility model provides a yarn clamping device for preventing yarn breakage, which overcomes the deficiencies described in the background art.
[0004] The technical solution adopted by the utility model to solve its technical problems is as follows:
[0005] A yarn clamping device for preventing yarn breakage includes a toothed plate, a left clamping body, a right clamping body, a left hinge rod, a right hinge rod, and a frame plate. The left clamping body and the right clamping body are jointly hinged to the front end of the toothed plate through a first hinge member. The left clamping body is hinged to the left hinge rod, and the right clamping body is hinged to the right hinge rod. The left hinge rod and the right hinge rod are jointly hinged to the front end of the frame plate through a second hinge member. The inner side surface of the toothed plate is attached to the frame plate. By changing the relative position of the toothed plate and the frame plate, the opening and closing states of the clamping bodies are indirectly controlled by the left hinge rod and the right hinge rod. The yarn clamping device includes three states, namely, an open state, a state of limiting the yarn in a loop, and a state of locking the yarn.
[0006] When the yarn clamping device for preventing yarn breakage extends upward, clamps the yarn, and then retracts, it is not in the clamped state until it retracts to the bottom head; during the stroke from when the head extends upward to clamp the yarn to when it retracts to the bottom, it is not in the clamped state; between the forward stroke of the clip to the yarn clamping position, the toothed row is brought up, and the clip on the head slowly opens. When it extends to the top, that is, to the position of the yarn, the clip closes, restricting the yarn in the prefabricated limiting space at the head; when retracting to the bottom, the head clamps the yarn, and at this time the limiting space disappears. The utility model clamps in two steps, which reduces the clamping force, so that when it retracts to the bottom and truly clamps, the force becomes lighter and the yarn is not easily broken.
[0007] A preferred technical solution: A mating opening is prefabricated on the frame plate.
[0008] A preferred technical solution: When the yarn clamping device is in the open state, the structure between the left clamping body and the right clamping body is an open-mouth structure.
[0009] A preferred technical solution: When the yarn clamping device is in the state of limiting the yarn in a loop, the extension distance of the yarn clamping device in this state is greater than the extension distance of the yarn clamping device in the open state.
[0010] A preferred technical solution: It is in a semi-closed state between the left clamping body and the right clamping body, and a yarn limiting structure is formed in a circle.
[0011] A preferred technical solution: When the yarn clamping device is in the yarn locking state, the protruding distance of the yarn clamping device in this state is less than the protruding distance of the yarn clamping device in the state of limiting the loop of yarn, and less than the protruding distance of the yarn clamping device in the open state.
[0012] A preferred technical solution: It is in a closed state between the left clamping body and the right clamping body, and the left clamping body and the right clamping body lock the yarn.
[0013] A preferred technical solution: It further includes a servo motor for driving the displacement of the toothed plate, and an output tooth is provided at the output end of the servo motor, and the output tooth meshes with the side end of the toothed plate.
[0014] A preferred technical solution: A limit switch is further provided on the toothed plate.
[0015] By adopting the above technical solutions, the beneficial effects of the present utility model are as follows:
[0016] In the present utility model, the structures of the yarn clamping device cooperate with each other. When grasping the yarn, it does not directly change from the open state to the yarn locking state, but first transitions to the state of limiting the loop of yarn, reducing the risk of yarn breakage when the yarn grasping device grasps the yarn. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The present utility model will be further described below in conjunction with the drawings and embodiments.
[0018] Figure 1 is a schematic structural diagram of the present utility model;
[0019] Figure 2 is a schematic structural diagram of the limit switch on the toothed plate of the present utility model;
[0020] Figure 3 is a schematic structural diagram of the present utility model from the bottom view angle;
[0021] Figure 4 is a schematic structural diagram of the clamping body of the present utility model in the open state;
[0022] Figure 5 is a schematic structural diagram of the clamping body of the present utility model in the state of limiting the loop of yarn;
[0023] Figure 6 is a schematic structural diagram of the clamping body of the present utility model in the yarn locking state;
[0024] Figure 7 is a schematic structural diagram of the present utility model when driven and controlled by a servo motor;
[0025] Figure 8Schematic diagram of the distribution of the driving teeth at the lower part of multiple yarn clamping devices of the present utility model;
[0026] Figure 9 Schematic diagram of the structure of the driving teeth on the upper part of the servo motor of the present utility model in cooperation;
[0027] Figure 10 Schematic diagram of a structure composed of the yarn clamping device and the servo motor of the present utility model.
[0028] Main reference numeral description:
[0029] 1. Tooth plate; 2. Left clamp body; 3. Right clamp body; 4. Left hinge rod; 5. Right hinge rod; 6. Frame plate; 61. Fitting port; 7. First hinge member; 8. Second hinge member; 9. Limit switch; 10. Return spring; 20. Driving tooth; 21. Servo motor; 22. Transmission tooth. Detailed implementation manners
[0030] As Figures 1 - 10 shown, a yarn clamping device for preventing yarn breakage includes a tooth plate 1, a left clamp body 2, a right clamp body 3, a left hinge rod 4, a right hinge rod 5, and a frame plate 6. The left clamp body 2 and the right clamp body 3 are jointly hinged and installed at the front end of the tooth plate 1 through a first hinge member 7. The left clamp body 2 is hinged to the left hinge rod 4, and the right clamp body 3 is hinged to the right hinge rod 5. The left hinge rod 4 and the right hinge rod 5 are jointly hinged and installed at the front end of the frame plate 6 through a second hinge member 8. The inner side surface of the tooth plate 1 is in contact with the frame plate 6. By changing the relative position between the tooth plate 1 and the frame plate 6, the opening and closing states of the clamp bodies are indirectly controlled by the left hinge rod 4 and the right hinge rod 5. The yarn clamping device includes three states, namely, an open state, a limit loop yarn state, and a yarn locking state.
[0031] Furthermore, a fitting port 61 is pre-set on the frame plate 6.
[0032] Furthermore, when the yarn clamping device is in the open state, an open port structure exists between the left clamp body 2 and the right clamp body 3.
[0033] Furthermore, when the yarn clamping device is in the limit loop yarn state, the extending distance of the yarn clamping device in this state is greater than that in the open state.
[0034] Furthermore, between the left clamp body 2 and the right clamp body 3 is a semi-closed state, and a loop yarn limiting structure is formed.
[0035] Furthermore, when the yarn clamping device is in the yarn locking state, the extending distance of the yarn clamping device in this state is less than that in the limit loop yarn state and less than that in the open state.
[0036] Furthermore, between the left clamp body 2 and the right clamp body 3 is a closed state, and the left clamp body 2 and the right clamp body 3 lock the yarn.
[0037] Furthermore, it further includes a servo motor 21 for driving the displacement of the toothed plate 1. An output tooth is provided at the output end of the servo motor 21, and the output tooth meshes with the side end of the toothed plate 1.
[0038] Furthermore, a limit switch 9 is also provided on the toothed plate 1, and one end of the limit switch 9 is connected with a return spring 10 arranged.
[0039] The yarn clamping device for preventing yarn breakage in the present utility model is applied to the yarn grasping of knitting equipment, specifically it can be a computerized flat knitting machine. The opening and closing principle of the clamping head position of the yarn clamping device is that the left hinge rod 4 and the right hinge rod 5 are respectively hinged to the left clamping body 2 and the right clamping body 3; the principle of the opening and closing degree of the clamping head position of the yarn clamping device is to control the opening and closing degree of the left clamping body 2 and the right clamping body 3 through the hinge connection of the left hinge rod 4 and the right hinge rod 5; when the output tooth of the servo motor 21 is controlled to rotate, the toothed plate 1 displaces. At this time, the distance between the first hinge member 7 and the second hinge member 8 changes, and further the included angle between the left hinge rod 4 and the right hinge rod 5 changes, and the opening and closing degree of the left clamping body 2 and the right clamping body 3 changes. Commonly, by controlling the number of rotation turns of the output tooth, the output end correspondingly controls the toothed plate 1 to displace a predetermined distance, and further a state of opening and closing is formed between the left clamping body 2 and the right clamping body 3; the yarn clamping device for preventing yarn breakage in the present utility model is divided into an open state, a limit loop yarn state, and a yarn locking state. When applied and installed to grasp yarn of knitting equipment, the toothed plate 1 is controlled to displace forward, the left clamping body 2 and the right clamping body 3 open, and the toothed plate 1 continues to displace forward. When it displaces to the position of the yarn, the left clamping body 2 and the right clamping body 3 close. At this time, a loop yarn limiting structure (which can be understood as the clamping bodies forming a hollow limiting loop with a certain width) is formed between the left clamping body 2 and the right clamping body 3, and the yarn is only limited within this loop; finally, the toothed plate 1 displaces backward, and the left clamping body 2 and the right clamping body 3 lock the yarn. At this time, the yarn is in contact with the clamping bodies and there is no space for deviation.
[0040] A fitting can be provided to cooperate to maintain the yarn clamping device in a certain state, and corresponding limiting structures can also be provided at the end or inside to maintain the current state of the yarn clamping device. Multiple yarn clamping heads can be provided in the yarn clamping device for preventing yarn breakage. Correspondingly, multiple toothed plates 1, driving teeth 20, and servo motors 21 can be provided according to requirements. By providing multiple servo motors 21, multiple transmission teeth 22 are arranged to drive and cooperate to control the corresponding driving teeth 20 to start.
[0041] The above is only a preferred embodiment of the present utility model, and thus the scope of implementation of the present utility model cannot be limited thereby. That is, equivalent changes and modifications made according to the scope of the present utility model patent and the content of the specification should still fall within the scope covered by the present utility model.
Claims
1. A yarn clamping device for preventing yarn breakage, characterized in that, It includes a toothed plate, a left clamping body, a right clamping body, a left hinge rod, a right hinge rod, and a frame plate. The left clamping body and the right clamping body are hingedly installed at the front end of the toothed plate through a first hinge member. The left clamping body is hinged to the left hinge rod, and the right clamping body is hinged to the right hinge rod. The left hinge rod and the right hinge rod are hingedly installed at the front end of the frame plate through a second hinge member. The inner side of the toothed plate is in contact with the frame plate. By changing the relative position between the toothed plate and the frame plate, the hinged movement of the left hinge rod and the right hinge rod is indirectly controlled to control the opening and closing state of the clamping body. The yarn clamping device has three states, namely the open state, the limiting loop yarn state, and the yarn locking state.
2. The yarn clamping device for preventing yarn breakage according to claim 1, characterized in that, A mating port is pre-set on the frame plate.
3. The yarn clamping device for preventing yarn breakage according to claim 1, characterized in that, When the yarn clamping device is in the open state, an open port structure exists between the left clamping body and the right clamping body.
4. The yarn clamping device for preventing yarn breakage according to claim 1, characterized in that When the yarn clamping device is in the limiting loop yarn state, the extension distance of the yarn clamping device in this state is greater than that in the open state.
5. The yarn clamping device for preventing yarn breakage according to claim 4, characterized in that, A semi-closed state exists between the left clamping body and the right clamping body, and a loop yarn limiting structure is formed.
6. The yarn clamping device for preventing yarn breakage according to claim 1, characterized in that, When the yarn clamping device is in the yarn locking state, the extension distance of the yarn clamping device in this state is less than that in the limiting loop yarn state and less than that in the open state.
7. The yarn clamping device for preventing yarn breakage according to claim 6, characterized in that, A closed state exists between the left clamping body and the right clamping body, and the left clamping body and the right clamping body lock the yarn.
8. The yarn clamping device for preventing yarn breakage according to claim 1, wherein It further includes a servo motor for driving the displacement of the toothed plate. An output tooth is provided at the output end of the servo motor, and the output tooth meshes with the side end of the toothed plate.
9. The yarn clamping device for preventing yarn breakage according to claim 1, characterized in that, A limit switch is also provided on the toothed plate.