Elastic automatic-stop and automatic-threading device for broken yarns of flat knitting machine
By designing a yarn breaking traction mechanism on the knitting horizontal machine, the free end of the elastic yarn is automatically pulled through the yarn nozzle and tied to the yarn hook, which solves the weaving defects and safety hazards caused by the yarn breaking of the elastic yarn and improves production efficiency.
Patent Information
- Application Number
- CN202422394306.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-09-30
AI Technical Summary
During the knitting horizontal weaving process, the elastic yarn breaks the yarn and causes holes or yarn failures to be broken in the automatic woven fabric sample, and manual yarn wear is cumbersome and time-consuming and has safety hazards.
A knitting machine device including a yarn barrel, a yarn guide wheel, a yarn nozzle, a crochet needle and a yarn breaking traction mechanism is designed. The free end of the elastic yarn is automatically pulled through the yarn nozzle and tied to the yarn hook to achieve automatic shutdown and reboot.
It realizes automatic traction and penetration of elastic yarn after breaking the yarn, reducing manual operation time and safety hazards and improving production efficiency.
Smart Images
Figure CN223240293U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of weaving, and in particular relates to an elastic yarn-breaking automatic stopping and yarn-threading device for a flat knitting machine. Background Art
[0002] During the weaving process of the knitting machine, the elastic yarn often breaks at the yarn guide hook 41 near the yarn mouth, but the yarn mouth can still weave continuously under the drive of the machine head, resulting in a series of incomplete phenomena such as holes or yarn missing and faults in the automatically woven fabric sample, further wasting raw material resources, equipment and its electrical resources. When workers find out, they need to re-thread the yarn, because it is not easy to thread the elastic yarn directly. Manual threading requires the use of inelastic yarn as a traction medium and knotting the free end of the elastic yarn before threading it into the corresponding yarn mouth. The whole process is cumbersome, time-consuming and labor-intensive, which is not conducive to efficient production. In addition, personnel are prone to misoperation during operation, and the machine head is prone to direct operation, which poses certain safety hazards. Utility Model Content
[0003] In order to solve the above technical problems, the purpose of the present utility model is to provide a knitting machine elastic yarn breakage automatic stop and self-threading device which has a simple structure and can automatically pull and thread the elastic yarn after the elastic yarn breaks.
[0004] In order to achieve the above-mentioned purpose, the technical solution of the present invention is as follows: A knitting machine elastic yarn breakage self-stop and self-threading device comprises a yarn bobbin and a needle bed, a yarn guide wheel is provided above the yarn bobbin, a yarn mouth is provided above the needle bed, a crochet hook is provided below the needle bed, and a yarn hook for yarn tying is provided on one side below the needle bed, the yarn bobbin is used to supply elastic yarn to the needle bed through the yarn mouth, and also includes a broken yarn traction mechanism, the free end of the elastic yarn after breaking is placed on the yarn guide wheel, and the broken yarn traction mechanism is used to pull the free end of the elastic yarn through the yarn mouth.
[0005] The beneficial effect of the above technical solution is that when the elastic yarn breaks, the free end of the elastic yarn hangs on the yarn guide wheel. At this time, the entire knitting machine can be stopped, and the broken yarn traction mechanism is started to pull the free end of the elastic yarn vertically through the yarn mouth. Then, the free end of the elastic yarn is manually tied to the yarn hook and the knitting machine can be restarted.
[0006] The broken yarn traction mechanism in the above technical solution includes a first traction member and a second traction member, the first traction member is arranged above the yarn mouth, and the second traction member is vertically arranged in the yarn mouth, the first traction member is used to pull the free end of the elastic yarn from the yarn guide wheel to pass horizontally above the yarn mouth, and the second traction member is used to connect the first traction member to pull the free end of the elastic yarn to pass through the yarn mouth from top to bottom.
[0007] The beneficial effect of the above technical solution is that the first traction member and the second traction member are combined to pull the free end of the elastic yarn. Specifically, the first yarn lateral traction will pull the free end of the elastic yarn laterally to pass above the yarn mouth, and the second traction member will then pull the free end of the elastic yarn downward to pass below the yarn mouth. At this time, the free end of the elastic yarn can be manually pulled to be tied to the yarn hook.
[0008] The broken yarn traction mechanism in the above technical solution further includes a third traction member, which is laterally arranged below the yarn mouth and is connected to the second traction member to pull the free end of the elastic yarn close to the yarn hook.
[0009] The beneficial effect of the above technical solution is that when the free end of the elastic yarn is passed under the traction of the second traction member to the bottom of the yarn mouth, the third traction member can continue to pull the free end of the elastic yarn close to the yarn hook. At this time, it is only necessary to manually tie the free end of the elastic yarn to the yarn hook.
[0010] In the above technical solution, the first traction member, the second traction member and the third traction member all include a linear driving member and a yarn clamp provided on a driving end of the linear driving member.
[0011] The beneficial effect of the above technical solution is that the first traction member, the second traction member and the third traction member all move in a straight line, which makes the arrangement of the first traction member, the second traction member and the third traction member simpler and occupies less space.
[0012] In the above technical solution, the second traction member also includes a rotary driving member, and the corresponding yarn clamp is installed on the driving end of the corresponding linear driving member through the rotary driving member, and the rotary driving member is used to drive the clamping mouth of the corresponding yarn clamp upward or downward.
[0013] The beneficial effect of the above technical solution is that: in this way, the yarn clamp corresponding to the second traction member can face its clamping mouth upward or downward under the drive of the rotating drive member. When the second traction member is connected to the elastic yarn transported by the first traction member, its clamping mouth faces upward, and when the second traction member is connected by the third traction member, its clamping mouth faces downward.
[0014] The linear drive member in the above technical solution is a screw drive member or a telescopic cylinder.
[0015] The beneficial effects of the above technical solution are: its structure is simple and its volume occupies a small space.
[0016] The yarn clamp described in the above technical solution is an electric clamp.
[0017] The beneficial effects of the above technical solution are: its structure is simple and its volume occupies a small space.
[0018] In the above technical solution, a plurality of yarn guide hooks are further provided at the upper end of the yarn mouth side wall.
[0019] The beneficial effect of the above technical solution is that the elastic yarn can be held up by the yarn guide hook on the yarn mouth, thereby reducing the probability of the elastic yarn breaking.
[0020] The lower end of the yarn mouth in the above technical solution is trumpet-shaped.
[0021] The beneficial effect of the above technical solution is that it can better gather the elastic yarn.
[0022] In the above technical solution, a steering wheel is further provided above the yarn drum, and the elastic yarn between the yarn drum and the yarn guide wheel is deflected via the steering wheel.
[0023] The beneficial effect of the above technical solution is that the yarn feeding path of the yarn bobbin is more compact and the deflection of the elastic yarn during yarn feeding is reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 This is a structural diagram of the elastic yarn-breaking automatic stop and automatic yarn-threading device for a flat knitting machine according to Example 1 of the present utility model;
[0025] Figure 2 This is a schematic diagram of the first traction member clamping the free end of the elastic yarn in Example 1 of the present utility model;
[0026] Figure 3 This is a schematic diagram of the first pulling member in Example 1 of the present utility model when the free end of the elastic yarn is brought to connect with the second pulling member;
[0027] Figure 4 This is a schematic diagram of the second pulling member in Example 1 of the present invention when the free end of the elastic yarn is delivered to be connected with the third pulling member;
[0028] Figure 5 This is a schematic diagram of the third traction member in Example 1 of the present invention bringing the free end of the elastic yarn close to the yarn hook;
[0029] Figure 6 This is a top view of the first traction member in Example 1 of the present utility model;
[0030] Figure 7 This is a side view of the second traction member in Example 1 of the present utility model;
[0031] Figure 8This is a schematic diagram of the second traction member in Example 2 of the present utility model, with the yarn clamp corresponding to the second traction member facing upwards;
[0032] Figure 9 This is a schematic diagram of the second traction member in Example 2 of the present utility model, with the yarn clamp corresponding to the second traction member facing downwards;
[0033] Figure 10 This is one of the side views of the second traction member in Example 2 of the present utility model;
[0034] Figure 11 This is the second side view of the second traction member in Example 2 of the present utility model.
[0035] In the figure: 1. yarn bobbin; 11. elastic yarn; 2. needle bed; 3. yarn guide wheel; 4. yarn mouth; 41. yarn guide hook; 5. crochet needle; 6. yarn hook; 7. broken yarn traction mechanism; 7a. first traction member; 7b. second traction member; 7c. third traction member; 71. linear drive member; 72. yarn clamp; 73. rotary drive member; 8. steering wheel. DETAILED DESCRIPTION
[0036] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not intended to limit the scope of the present invention. The following paragraphs describe the present invention in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will be more clearly described according to the following description and claims. It should be noted that the drawings are all in a very simplified form and are not in exact proportions. They are only used to facilitate and clearly illustrate the purpose of the embodiments of the present invention.
[0037] Example 1
[0038] like Figure 1 As shown, this embodiment provides a knitting machine elastic yarn breakage automatic stop and self-threading device, comprising a yarn bobbin 1, a needle bed 2 and a broken yarn traction mechanism 7, wherein a yarn guide wheel 3 is provided above the yarn bobbin 1, a yarn mouth 4 is provided above the needle bed 2, a crochet needle 5 is provided below the needle bed 2, and a yarn hook 6 for yarn tying is provided on one side below the needle bed 2, the yarn bobbin 1 is used to feed the elastic yarn 11 to the needle bed 2 through the yarn mouth 4, and the elastic yarn 11 is stopped after it breaks. The free end of the elastic yarn is placed on the yarn guide wheel 3, and the broken yarn traction mechanism 7 is used to pull the free end of the elastic yarn 11 to pass through the yarn mouth 4. In this way, when the elastic yarn breaks, the free end of the elastic yarn is hung on the yarn guide wheel. At this time, the entire knitting machine can be stopped, and the broken yarn traction mechanism is started to pull the free end of the elastic yarn to vertically pass through the yarn mouth. Then, the free end of the elastic yarn is manually tied to the yarn hook to restart the knitting machine.
[0039] like Figure 2-Figure 5 As shown, the broken yarn traction mechanism 7 in the above technical solution includes a first traction member 7a and a second traction member 7b, the first traction member 7a is arranged above the yarn mouth 4, and the second traction member 7b is vertically arranged in the yarn mouth 4, the first traction member 7a is used to pull the free end of the elastic yarn 11 from the yarn guide wheel 3 to the top of the yarn mouth 4, and the second traction member 7b is used to connect the first traction member 7a to pull the free end of the elastic yarn 11 to pass through the yarn mouth 4 from top to bottom, so that the first traction member and the second traction member are combined to pull the free end of the elastic yarn. Specifically, the first yarn lateral traction will pull the free end of the elastic yarn laterally to pass above the yarn mouth, and the second traction member The guide then pulls the free end of the elastic yarn downward to pass through the bottom of the yarn mouth. At this time, the free end of the elastic yarn can be manually pulled to be tied with the yarn hook. In this embodiment, the first pulling member 7a is installed at the upper end of the yarn mouth; preferably, the broken yarn pulling mechanism 7 also includes a third pulling member 7c, which is laterally arranged below the yarn mouth 4, and is connected to the second pulling member 7b to pull the free end of the elastic yarn 11 close to the yarn hook 6. In this way, when the free end of the elastic yarn passes through the bottom of the yarn mouth under the traction of the second pulling member, the free end of the elastic yarn can be continued to be pulled close to the yarn hook by the third pulling member. At this time, it is only necessary to manually tie the free end of the elastic yarn to the yarn hook.
[0040] In the above technical solution, the first traction member 7a, the second traction member 7b and the third traction member 7c all include a linear driving member 71 and a yarn clamp 72 arranged on the driving end of the linear driving member 71, so that the first traction member 7a, the second traction member 7b and the third traction member 7c all move in a straight line, which makes the arrangement of the first traction member 7a, the second traction member 7b and the third traction member 7c simpler and occupies less space.
[0041] In the above technical solution, a plurality of yarn guide hooks 41 are further provided at the upper end of the side wall of the yarn mouth 4, so that the elastic yarn can be held up by the yarn guide hooks on the yarn mouth, thereby reducing the probability of the elastic yarn breaking.
[0042] In the above technical solution, the lower end of the yarn mouth 4 is trumpet-shaped, so that it has a better gathering effect on the elastic yarn.
[0043] In the above technical solution, a steering wheel 8 is further provided above the yarn drum 1. The elastic yarn 11 between the yarn drum 1 and the yarn guide wheel 3 is turned by the steering wheel 8 (from vertical conveyance to horizontal conveyance). In this way, the yarn feeding path of the yarn drum is more compact and the deflection of the elastic yarn during yarn running is reduced.
[0044] like Figure 6As shown, in this embodiment, the moving directions of the yarn clamps corresponding to the first traction member and the third traction member are perpendicular to the directions of their clamping openings. Specifically, if the moving direction of the yarn clamp corresponding to the first traction member is left and right, the clamping opening of the corresponding yarn clamp is facing forward or backward, and its two clamping teeth also move left and right to clamp or release each other, and the setting method of the yarn clamp corresponding to the third traction member is similar to the setting method of the yarn clamp corresponding to the first traction member, which will not be repeated here.
[0045] The yarn clamp 72 in this embodiment is an electric clamp (specifically, a Gr i Ph i high-precision micro electric clamp) with a simple structure and a small space.
[0046] The linear drive member in this embodiment can be a telescopic cylinder or a linear drive member, and as Figure 7 As shown, in this embodiment, the linear driving member corresponding to the second traction member is vertically arranged in the yarn mouth, and the clamping mouth of the corresponding yarn clamp faces upward and is installed at the telescopic end of the linear driving member. At this time, the yarn clamp corresponding to the second traction member can extend upward to the outside of the yarn mouth, and can also be completely extended to the outside of the yarn mouth through the bottom of the yarn mouth.
[0047] Wherein, the telescopic cylinder can be a hydraulic cylinder, a telescopic air cylinder or a telescopic electric cylinder.
[0048] The structures and arrangements of the yarn bobbin 1, needle bed 2, yarn mouth 4, hook needle 5, yarn hook 6 and steering wheel 8 described in this embodiment are all prior art and will not be elaborated here. The steering wheel and yarn guide wheel described in this embodiment can both be grooved wheels.
[0049] This embodiment adds a yarn-breaking traction mechanism 7 to the existing knitting machine, so that after the elastic yarn breaks, the yarn-breaking traction mechanism 7 can pull the free end of the elastic yarn from the yarn guide wheel to pass through the yarn mouth and finally reach a position close to the yarn hook.
[0050] In this embodiment, the free end of the elastic yarn refers to the end of the elastic yarn that is still connected to the elastic yarn on the yarn bobbin at the broken portion of the elastic yarn.
[0051] In this embodiment, the first traction member and the third traction member are both arranged horizontally, and the second traction member is vertically arranged inside the yarn mouth. One end of the first traction member is connected to the upper end of the yarn mouth, and it will move with the yarn mouth, while the third traction member does not move synchronously with the yarn mouth, and one end of the first traction member is located above the yarn hook. When the elastic yarn breaks, the yarn mouth moves to the point where the first traction member moves away from the yarn mouth and moves close to the yarn guide wheel, and the end of the third traction member away from the yarn guide hook is located below the yarn mouth. At this time, the first traction member, the second traction member and the third traction member perform the yarn drawing operation in sequence.
[0052] Example 2
[0053] Same as Example 1, except that Figures 8-11 As shown, the second traction member 7b also includes a rotary drive member 73, and the corresponding yarn clamp 72 is installed on the driving end of the corresponding linear drive member 71 through the rotary drive member 73. The rotary drive member 73 is used to drive the clamping opening of the corresponding yarn clamp 72 upward or downward, so that the yarn clamp corresponding to the second traction member can have its clamping opening facing upward or downward under the drive of the rotary drive member. When the second traction member is connected to the elastic yarn transported by the first traction member, its clamping opening faces upward, and when the second traction member is connected by the third traction member, its clamping opening faces downward. In this embodiment, the linear drive member 71 corresponding to the second traction member can be a screw drive member, and the rotary drive member can be a rotary cylinder or a motor, and the driving end of the rotary drive member is perpendicular to the moving direction of the driving end of the corresponding linear drive member (in this embodiment, when the yarn clamp corresponding to the second traction member is facing upward, its clamping opening can extend out of the yarn mouth through the upper end of the yarn mouth, and similarly, when the yarn clamp corresponding to the second traction member is facing downward, its clamping opening can also extend out of the yarn mouth through the lower end of the yarn mouth).
[0054] In order to avoid the yarn clamp corresponding to the second traction member from being entangled, the rotation direction of the rotating drive member in this embodiment is inconsistent. Each rotation angle is 180° so that the corresponding yarn clamp opening faces upward or downward, and after rotating 180° forward, it will reverse 180° next time, alternating in sequence).
[0055] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any ordinary technician in this industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of protection of the technical solution of the present invention.
Claims
1. A knitting machine elastic yarn breakage automatic stop and self-threading device, comprising a yarn bobbin (1) and a needle bed (2), wherein a yarn guide wheel (3) is provided above the yarn bobbin (1), a yarn mouth (4) is provided above the needle bed (2), a crochet needle (5) is provided below the needle bed (2), and a yarn hook (6) for yarn tying is provided on one side below the needle bed (2), the yarn bobbin (1) is used to supply elastic yarn (11) to the needle bed (2) via the yarn mouth (4), and is characterized in that: It also includes a broken yarn pulling mechanism (7), wherein the free end of the elastic yarn (11) after being broken is placed on the yarn guide wheel (3), and the broken yarn pulling mechanism (7) is used to pull the free end of the elastic yarn (11) through the yarn mouth (4).
2. The elastic yarn breakage automatic stop and threading device for a flat knitting machine according to claim 1, characterized in that: The broken yarn pulling mechanism (7) comprises a first pulling member (7a) and a second pulling member (7b), wherein the first pulling member (7a) is arranged above the yarn mouth (4), and the second pulling member (7b) is arranged vertically inside the yarn mouth (4), the first pulling member (7a) is used to pull the free end of the elastic yarn (11) from the yarn guide wheel (3) to the top of the yarn mouth (4) in a horizontal direction, and the second pulling member (7b) is used to connect the first pulling member (7a) to pull the free end of the elastic yarn (11) to pass through the yarn mouth (4) from top to bottom.
3. The elastic yarn breakage automatic stop and threading device for a flat knitting machine according to claim 2, characterized in that: The broken yarn pulling mechanism (7) further comprises a third pulling member (7c), which is laterally arranged below the yarn mouth (4) and is connected to the second pulling member (7b) to pull the free end of the elastic yarn (11) close to the yarn hook (6).
4. The elastic yarn breakage automatic stop and threading device for a flat knitting machine according to claim 3, characterized in that: The first traction member (7a), the second traction member (7b) and the third traction member (7c) each comprise a linear drive member (71) and a yarn clamp (72) arranged on a drive end of the linear drive member (71).
5. The elastic yarn breakage automatic stop and threading device for a flat knitting machine according to claim 4, characterized in that: The second traction member (7b) further includes a rotary drive member (73), and the corresponding yarn clamp (72) is mounted on the driving end of the corresponding linear drive member (71) through the rotary drive member (73), and the rotary drive member (73) is used to drive the clamping mouth of the corresponding yarn clamp (72) upward or downward.
6. The elastic yarn breakage automatic stop and threading device for a flat knitting machine according to claim 4 or 5, characterized in that: The linear drive member (71) is a screw drive member or a telescopic cylinder.
7. The elastic yarn breakage automatic stop and threading device for a flat knitting machine according to claim 4 or 5, characterized in that: The yarn clamp (72) is an electric clamp.
8. The elastic yarn breakage automatic stop and threading device for a flat knitting machine according to claim 1, characterized in that: A plurality of yarn guide hooks (41) are also provided at the upper end of the side wall of the yarn mouth (4).
9. The elastic yarn breakage automatic stop and threading device for a flat knitting machine according to claim 1, characterized in that: The lower end of the yarn mouth (4) is trumpet-shaped.
10. The elastic yarn breakage automatic stop and threading device for a flat knitting machine according to claim 1, characterized in that: A deflection wheel (8) is also provided above the yarn drum (1), and the elastic yarn (11) between the yarn drum (1) and the yarn guide wheel (3) is deflected via the deflection wheel (8).