A multi-path auxiliary upper disc de-coil cam structure

Abstract

This utility model relates to the field of knitting machine technology, and provides a multi-path jacquard auxiliary upper plate loop-removing triangle structure, including a saddle, an auxiliary loop-removing triangle, an elastic buffer component, and a limiting component, all mounted on the body of a double-sided jacquard circular knitting machine. The auxiliary loop-removing triangle is installed in the mounting groove of the saddle via the elastic buffer component. The front end of the auxiliary loop-removing triangle has a sloping track to guide the needle upwards for loop removal. The highest point of the sloping track is higher than the plane of the upper needle plate, allowing the old loop to naturally disengage from the needle hook when the needle reaches its highest position. The limiting component is located between the auxiliary loop-removing triangle and the mounting groove of the saddle to prevent the auxiliary loop-removing triangle from disengaging from the mounting groove. The triangle's movable track has a take-off track that connects with the auxiliary loop-removing triangle's track. After the needle completes loop removal along the auxiliary loop-removing triangle, it can return to the flat cylinder opening position along the take-off track. This utility model solves the problems of needle collision and yarn feeding associated with existing auxiliary loop-removing triangles.

Description

Technical Field

[0001] This utility model relates to the field of knitting machine technology, and in particular to a multi-path jacquard auxiliary upper plate loop release triangle structure. Background Technology

[0002] The loop release process of the upper coil knitting needles on a double-sided jacquard circular knitting machine is a crucial step in knitting loops. The trajectory of the loop release cam directly affects the smooth release of the loops and the stability of subsequent yarn padding. Currently, most traditional upper coil loop release cams are fixed structures, which have the following defects in actual production: When the knitting needles encounter abnormal conditions such as tangled patterns or knotted yarn, the rigid cam cannot avoid the impact force of the knitting needles, easily leading to needle breakage or cam damage, resulting in a high equipment failure rate; after loop release, the knitting needle return trajectory is poorly designed, making it impossible for the knitting needles to smoothly reach a safe position without snagging yarn. During the yarn padding process, the needles are prone to snagging new yarn, causing knitting defects such as yarn snag and missed needles. Utility Model Content

[0003] Therefore, in response to the above problems, this utility model proposes a multi-path jacquard auxiliary upper plate unwinding triangle structure, which solves the problems of needle collision and yarn feeding in existing auxiliary unwinding triangles, and improves the operational stability and knitting quality of knitting equipment.

[0004] To solve this technical problem, the present invention adopts the following solution: a multi-path jacquard auxiliary upper plate loop-removing triangle structure, including a saddle on the body of a double-sided jacquard circular knitting machine, wherein the saddle has a triangular movable track extending circumferentially along the body of the double-sided jacquard circular knitting machine, and further includes an auxiliary loop-removing triangle, an elastic buffer component, and a limiting component; the saddle has an installation groove for installing the auxiliary loop-removing triangle on the triangular movable track; the auxiliary loop-removing triangle is installed in the installation groove of the saddle via the elastic buffer component, and the front end of the auxiliary loop-removing triangle has an inclined track to guide the needle to rise and remove the loop, the highest point of the inclined track of the auxiliary loop-removing triangle is higher than the plane of the upper needle plate so that when the needle rises to the highest position, the old loop naturally disengages from the needle hook; the limiting component is located between the auxiliary loop-removing triangle and the groove of the saddle to restrict the auxiliary loop-removing triangle from disengaging from the installation groove; the triangular movable track has a take-off track that connects with the track of the auxiliary loop-removing triangle, and after the needle completes the loop removal along the auxiliary loop-removing triangle, it can retreat to the flat cylinder opening position along the take-off track.

[0005] In a further improvement, the elastic buffer assembly includes a spring disposed between the auxiliary uncoiling triangle and the bottom of the mounting groove of the saddle to provide upward elastic support for the auxiliary uncoiling triangle.

[0006] In a further improvement, the mounting groove of the saddle is a vertically opened guide groove, the sidewall of the auxiliary disengagement triangle slides in fit with the guide groove, and the auxiliary disengagement triangle moves up and down along the guide groove via an elastic buffer assembly.

[0007] In a further improvement, the limiting component includes a fixing pin and a limiting pin. The fixing pin is located on the mounting groove of the saddle, and the limiting pin is located on the auxiliary disengagement triangle. The fixing pin and the limiting pin cooperate to limit the maximum upward floating position of the auxiliary disengagement triangle.

[0008] By adopting the aforementioned technical solution, the beneficial effects of this utility model are as follows: The floating auxiliary loop-removing triangle, supported by the spring of the elastic buffer component, automatically sinks to avoid abnormal impact forces encountered by the knitting needle, fundamentally preventing needle collision accidents and reducing equipment failure rates and maintenance costs. The upward trajectory of the auxiliary loop-removing triangle smoothly connects with the needle-retraction trajectory of the triangle's movement, allowing the knitting needle to smoothly return to the flat cylinder opening position after loop removal, avoiding yarn feeding and needle leakage defects, and improving fabric weaving quality. The auxiliary loop-removing triangle adopts a small-volume integrated design, embedded in the mounting slot of the saddle, requiring no additional installation space and adapting to the compact layout of multi-channel double-sided jacquard machines, supporting the increase in the number of jacquard channels. The coordinated design of the guide groove and the limiting component ensures that the auxiliary loop-removing triangle can only float up and down without deviation or wobbling. The setting of the limiting component rigidly locks the upper limit position of the auxiliary loop-removing triangle, preventing it from floating off course or loosening out of the mounting slot of the saddle. Attached Figure Description

[0009] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0010] Figure 2 This is a partial structural diagram of an embodiment of the present utility model;

[0011] Figure 3 This is a partial structural schematic diagram of an embodiment of the present utility model;

[0012] Among them, 1. Saddle, 2. Auxiliary release triangle, 3. Elastic buffer assembly, 4. Limiting assembly, 11. Triangular moving track, 12. Mounting slot, 21. Inclined track, 111. Retracting needle track. Detailed Implementation

[0013] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0014] refer to Figures 1-3The preferred multi-path jacquard auxiliary upper plate uncoiling triangle structure of this utility model includes a saddle 1, an auxiliary uncoiling triangle 2, an elastic buffer assembly 3, and a limiting assembly 4, all mounted on the body of a double-sided jacquard circular knitting machine. The saddle 1 has a triangular movable track 11 extending circumferentially along the body of the double-sided jacquard circular knitting machine. The saddle 1 has a mounting groove 12 on the triangular movable track 11 for mounting the auxiliary uncoiling triangle 2. The auxiliary uncoiling triangle 2 is mounted in the mounting groove 12 of the saddle 1 via the elastic buffer assembly 3. The elastic buffer assembly 3 includes a spring, which is positioned between the auxiliary uncoiling triangle 2 and the bottom of the mounting groove 12 of the saddle 1 to provide upward elastic support for the auxiliary uncoiling triangle 2. The front end of the triangle 2 is provided with an inclined track 21 to guide the knitting needle to rise and unloop. The highest point of the inclined track 21 of the auxiliary unlooping triangle 2 is higher than the upper needle plate plane, so that when the knitting needle rises to the highest position, the old loop naturally disengages from the knitting needle hook. The limiting component 4 includes a fixing pin 41 and a limiting pin 42. The fixing pin 41 is provided on the mounting groove 12 of the saddle 1, and the limiting pin 42 is provided on the auxiliary unlooping triangle 2. The fixing pin 41 and the limiting pin 42 cooperate to limit the maximum upward floating position of the auxiliary unlooping triangle 2. The triangle movable track 11 is provided with a take-off track 111 that connects with the track of the auxiliary unlooping triangle 2. After the knitting needle completes the unlooping along the auxiliary unlooping triangle 2, it can retreat to the flat cylinder opening position along the take-off track 111.

[0015] The mounting groove 12 of the saddle 1 is a vertically opened guide groove. The side wall of the auxiliary uncoiling triangle 2 is slidably engaged with the guide groove. The auxiliary uncoiling triangle 2 moves up and down along the guide groove via the elastic buffer component 3.

[0016] Work process:

[0017] 1. Standby State: Limit Initialization: The elastic buffer component 3 is in a naturally extended state, with the spring pushing the auxiliary loop release triangle 2 upwards until the lower end face of the limit pin 42 on the side wall of the auxiliary loop release triangle 2 is tightly pressed against the fixing pin 41 set in the mounting groove 12 of the saddle 1, thereby achieving the upper limit locking of the auxiliary loop release triangle 2. At this time, the inclined trajectory 21 of the auxiliary loop release triangle 2 is at the preset standard process height (precisely corresponding to the initial position of the upper knitting needle). Confirm that the top of the inclined trajectory 21 of the auxiliary loop release triangle 2 is smoothly tangent to the needle return trajectory 111 of the triangle's moving trajectory, without any jamming or steps, ensuring the continuity of the knitting needle movement trajectory. According to the number of jacquard paths (8 paths, 12 paths, 16 paths, etc.), confirm that the installation position of the auxiliary loop release triangles at each station is consistent, and that the contact state between the limit pin 42 and the fixing pin 41 is uniform, avoiding fabric defects caused by single-path limit deviations.

[0018] 2. Knitting needle approach stage: Driven by the needle cylinder, the upper knitting needle approaches the bottom of the inclined track 21 of the auxiliary loop release triangle 2 along the guide track of the saddle 1. At this time, the needle hook is in the closed state, hooking the old loop from the previous knitting cycle. The knitting needle continues to move, and the needle heel contacts the inclined track 21 of the auxiliary loop release triangle 2. Under the driving force of the needle cylinder, it smoothly climbs up the inclined track 21. As the height of the knitting needle gradually increases, its top exceeds the reference surface of the needle opening of the upper needle cylinder. Under the action of its own tension and the pulling force of the rising knitting needle, the old loop naturally slides off the top of the needle hook, completing the forced loop release action. During this process, the auxiliary loop release triangle 2 remains in the upper locked state under the support force of the spring and the slight pressure of the knitting needle. The limiting pin 42 and the fixing pin 41 are always tightly abutted and there is no displacement. Track connection stage: After the needle completes the loop release, the needle heel continues to move, smoothly transitioning to the entrance of the take-off track 111 of the triangular movable track 11 (because the inclined track 21 and the take-off track 111 are seamlessly connected, the needle movement is smooth and without impact). Smooth take-off stage: The needle slowly falls back down along the take-off track 111 of the triangular movable track 11 to the flat cylinder opening position (the needle hook is in a safe position where it is fully open and does not snag the yarn); at this time, the yarn feeding mechanism completes the yarn feeding action, and the needle will not snag the new yarn, avoiding knitting defects such as yarn feeding, missed needles, and yarn hanging.

[0019] 3. Cyclic Operation Phase: After the needle finishes its pull-off, it continues to rotate with the needle cylinder, leaving the working range of the cam track 11 and the auxiliary loop-removal cam 2, and enters the next knitting cycle (yarn padding, loop formation, loop removal); at the same time, subsequent needles enter the inclined track 21 of the auxiliary loop-removal cam 2 in sequence, repeating the above loop removal-pulling-off process, to achieve continuous knitting of multi-path jacquard.

[0020] 4. When the knitting needle cannot climb the inclined path 21 of the loop release guide normally due to jamming, yarn knots, or other reasons, a downward instantaneous impact force is generated on the inclined path 21 of the auxiliary loop release triangle 2. The elastic buffer component 3 avoids this impact force, making it greater than the supporting force of the compression spring. The auxiliary loop release triangle 2 then begins to overcome the spring force and slides downward along the mounting groove (the guide groove restricts the triangle to only make vertical straight-line movements, without left or right offset or swaying). At the same time, the limiting pin 42 fixed on the auxiliary loop release triangle 2 moves downward synchronously with the auxiliary loop release triangle 2, and locks against the fixed pin on the saddle 1. Pin 41 gradually separates and releases the upper lock; the auxiliary release triangle 2 continues to sink, the spring is further compressed, and the elastic potential energy of the spring gradually increases, converting the instantaneous hard impact force of the knitting needle into the elastic force of the spring, realizing buffering and unloading, preventing the knitting needle from bending or breaking due to excessive impact force, and protecting the auxiliary release triangle 2 and the triangle moving track from cracking and wear; before the fault is eliminated, the knitting needle continues to apply pressure, the auxiliary release triangle 2 remains in the downward position, the spring is in a compressed state, the limit pin 42 and the fixed pin 41 remain separated, and the equipment is temporarily in a buffer protection state. After the operator troubleshoots and resolves the fault (such as cleaning yarn knots, removing debris, and correcting the pattern program), the downward impact force of the needle on the auxiliary loop release triangle 2 disappears, the structure automatically resets, and normal operation resumes. The spring rebounds and extends upward, pushing the auxiliary loop release triangle 2 to slide upward along the guide mounting groove. During the upward movement of the auxiliary loop release triangle 2, it drives the limit pin 42 to move upward synchronously until the lower end face of the limit pin 42 tightly abuts against the upper end face of the fixed pin 41 again, achieving upper locking again. The auxiliary loop release triangle 2 returns to the standard working height. The needles climb up the slope along the loop release guide slope 21 of the auxiliary loop release triangle 2 again, restoring the normal loop release-needle take-off cycle. Multi-path jacquard knitting continues without significant machine downtime.

[0021] The double-sided jacquard circular knitting machine structure in the above-mentioned working process is an existing equipment; the only difference is that the structure of its auxiliary ring-removing device has been replaced to create the auxiliary ring-removing device structure of this utility model.

[0022] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A multi-path jacquard auxiliary upper plate release triangular structure, comprising a saddle seat disposed on the body of a double-sided jacquard circular knitting machine, wherein a triangular movable track extending circumferentially along the body of the double-sided jacquard circular knitting machine is provided on the saddle seat, characterized in that: It also includes an auxiliary loop-removing triangle, an elastic buffer assembly, and a limiting assembly; the saddle is located on a triangular movable track and has a mounting groove for installing the auxiliary loop-removing triangle; the auxiliary loop-removing triangle is installed in the mounting groove of the saddle via the elastic buffer assembly, and the front end of the auxiliary loop-removing triangle has an inclined track to guide the needle to rise and remove the loop, the highest point of the inclined track of the auxiliary loop-removing triangle is higher than the upper needle plate plane so that when the needle rises to the highest position, the old loop naturally disengages from the needle hook; the limiting assembly is located between the auxiliary loop-removing triangle and the mounting groove of the saddle to prevent the auxiliary loop-removing triangle from disengaging from the mounting groove; the triangular movable track has a take-off track that connects with the track of the auxiliary loop-removing triangle, and after the needle completes the loop removal along the auxiliary loop-removing triangle, it can retreat to the flat cylinder opening position along the take-off track; the elastic buffer assembly includes a spring, which is located between the auxiliary loop-removing triangle and the bottom of the mounting groove of the saddle to provide upward elastic support for the auxiliary loop-removing triangle.

2. The multi-path jacquard auxiliary upper plate unwinding triangular structure according to claim 1, characterized in that: The mounting groove of the saddle is a vertically opened guide groove. The side wall of the auxiliary disengagement triangle is slidably engaged with the guide groove. The auxiliary disengagement triangle moves up and down along the guide groove via an elastic buffer component.

3. The multi-path jacquard auxiliary upper plate release triangle structure according to claim 1, characterized in that: The limiting component includes a fixing pin and a limiting pin. The fixing pin is located on the mounting groove of the saddle, and the limiting pin is located on the auxiliary disengagement triangle. The fixing pin and the limiting pin cooperate to limit the maximum upward floating position of the auxiliary disengagement triangle.

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