Machine head structure of disc rope belt knitting machine

Abstract

The utility model relates to the field of rope belt knitting machines, in particular to a machine head structure of a disc rope belt knitting machine, which comprises a machine head fixing seat, a transmission component, a needle tube and a crochet hook, the needle tube is fixedly arranged on the machine head fixing seat, the transmission component is rotatably connected with the machine head fixing seat and can rotate around the axis of the needle tube, and the crochet hook is arranged on the machine head fixing seat. When the transmission assembly rotates, the bearded needles can be driven to reciprocate relative to the needle tube, one ends of the bearded needles are provided with thread hooking parts, the side wall of the needle tube is provided with two or more sliding grooves, the sliding grooves correspond to the bearded needles in number and position, the thread hooking parts penetrate out of the sliding grooves and extend to the end, away from the machine body fixing base, of the needle tube, and the bottom faces of the sliding grooves incline towards the axis of the needle tube. An included angle is formed between the bottom face of the sliding groove and the axis of the needle tube, the inner wall of the crochet hook is attached to the bottom face of the sliding groove, the crochet hook can slide along the bottom face of the sliding groove, the crochet hook extends out of the needle tube in the inclined direction to hook a knitting line, the moving stroke needed by the crochet hook is reduced, the crochet hook can knit metal rope belts or paper belts or other special rope belts, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of cord and belt knitting machines, in particular to a head structure of a disc cord and belt knitting machine. Background Art

[0002] Cords and belts, also known as running belts, are ropes, drawstrings, belt loops, etc. made of various textile or non-textile materials. They are characterized by neat and smooth cut edges, no frayed edges, and no loose edges, and have good durability and aesthetics. According to different shapes and materials, cords and belts can be divided into various types, such as round cords, flat belts, mother and son belts, etc. Cords and belts are widely used in many fields due to their unique properties, such as clothing accessories, furniture decoration, gift packaging, industrial production, etc.

[0003] A cord and belt knitting machine is a mechanical device specifically used for knitting cords and belts. It weaves fibers, metal wires or other materials into cords and belts of various specifications and shapes through specific processes and technologies. It usually consists of main parts such as a main shaft assembly, a yarn feeding device, a head, a traction device, and a cord winding device. Fibers or metal wires are loaded into the yarn feeding device and fixed on the main shaft through rollers or other devices. Then, the fibers or metal wires are cross-knitted through the head to form a tight knitting structure. The traction device is used to stretch the knitted fibers or metal wires to make them more firm and uniform. Finally, the knitted cords and belts are wound and sorted through the cord winding device. It has a high knitting speed and efficiency, is suitable for large-scale production, integrates functions such as yarn feeding, knitting, traction, and cord winding, realizes fully automated production, and reduces labor costs.

[0004] When knitting cords and belts, the knitting threads need to cross each other to achieve knitting. Therefore, the yarn feeding device often deflects with the axis of the needle tube as the rotation axis, so that an angle is formed between the knitting thread and the axis of the needle tube before the crochet hook can hook the knitting thread for interweaving. The axis of the crochet hook on the existing head structure is parallel to the axis of the needle tube during movement, resulting in a relatively large movement stroke required for the crochet hook. If the reciprocating movement distance of several crochet hooks is insufficient, the hooking part of the crochet hook cannot hook the knitting thread. The greater the stroke of the crochet hook, the tighter the knitting thread will be pulled back when the knitting thread retracts, and the tighter the knitting of the cord and belt. When knitting paper tapes, since the material strength of the knitting thread of the paper tape itself is not high, the knitting thread is easily broken when the crochet hook pulls out the knitting thread and retracts. When knitting metal cords and belts, the tighter the knitting of the metal knitting thread, the higher the hardness of the metal cord and belt, resulting in creases when the knitted metal cord and belt is bent. It is impossible to produce metal cords and belts such as copper ribbon and stainless steel ribbon other than sand lines and special cords and belts such as paper tapes. Summary of the Utility Model

[0005] To overcome the deficiencies of the existing technical solutions, the present utility model provides a head structure of a disc rope and belt knitting machine, which can effectively solve the technical problem that metal rope belts such as copper ribbon and stainless steel ribbon and special rope belts such as paper tape other than sand line cannot be produced.

[0006] The technical solution adopted by the present utility model to solve its technical problems is as follows:

[0007] A head structure of a disc rope and belt knitting machine includes a head fixing seat, a transmission component, a needle tube and a crochet hook. The needle tube is fixedly arranged on the head fixing seat. The crochet hook is slidably connected with the needle tube. The transmission component is rotatably connected with the head fixing seat. The transmission component can rotate around the axis of the needle tube. When the transmission component rotates, it can drive the crochet hook to reciprocate relative to the needle tube. One end of the crochet hook is provided with a thread-hooking part. The side wall of the needle tube is provided with more than two sliding grooves. There are more than two crochet hooks. The number and positions of the sliding grooves and the crochet hooks correspond. More than two crochet hooks are respectively arranged in more than two sliding grooves. The thread-hooking part passes through the sliding groove and extends to the end of the needle tube far from the machine body fixing seat. The bottom surface of the sliding groove inclines towards the axis of the needle tube, so that an included angle is formed between the bottom surface of the sliding groove and the axis of the needle tube. The inner wall of the crochet hook fits with the bottom surface of the sliding groove, and the crochet hook can slide along the bottom surface of the sliding groove.

[0008] Further, the thread-hooking part is composed of a hook and a movable rod. The hook forms a thread groove with the side wall of the crochet hook. One end of the movable rod is rotatably connected with the side wall of the crochet hook, and the other end of the movable rod can contact the hook head of the hook to close the opening of the thread groove.

[0009] Further, a receiving groove is arranged on the side wall of the crochet hook. One end of the movable rod is arranged in the receiving groove through a rotating shaft, and the whole movable rod can be flipped into the receiving groove.

[0010] Further, the transmission component includes a rotating sleeve and a cam sleeve. The axes of the rotating sleeve, the cam sleeve, the head fixing seat and the needle tube coincide. The cam sleeve is arranged on the surface of the needle tube. A driving groove is arranged on the inner wall of the cam sleeve. The end of the crochet hook far from the thread-hooking part is slidably connected with the driving groove. The inner wall of the rotating sleeve is fixedly connected with the surface of the cam sleeve. Both the cam sleeve and the rotating sleeve can rotate around the axis. A synchronous wheel for connecting with a power source is arranged on the surface of the rotating sleeve.

[0011] Further, the cam sleeve is composed of an upper cam and a lower cam. The upper cam and the lower cam are fixedly connected with the inner wall of the rotating sleeve, and a driving groove is formed between the upper cam and the lower cam.

[0012] Further, a bearing groove is arranged on the side wall of the head fixing seat. A ball bearing is installed in the bearing groove, and the inner wall of the rotating sleeve is connected with the side wall of the ball bearing.

[0013] Further, more than two wire threading pieces are arranged at one end of the rotating sleeve close to the syringe needle, and the wire threading pieces are connected to the rotating sleeve through a positioning ring.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: the bottom surface of the sliding groove inclines towards the axis of the syringe needle, so that an included angle is formed between the bottom surface of the sliding groove and the axis of the syringe needle. The inner wall of the crochet needle fits with the bottom surface of the sliding groove, and the crochet needle can slide along the bottom surface of the sliding groove. The crochet needle extends out of the syringe needle in an inclined direction to hook the knitting thread, reducing the required moving stroke of the crochet needle, enabling it to knit special ropes such as metal rope belts or paper tape, and improving production efficiency. Description of the Drawings

[0015] Figure 1 is a three-dimensional schematic diagram of the present utility model;

[0016] Figure 2 is an exploded view of the structure of the present utility model;

[0017] Figure 3 is a sectional view of the present utility model;

[0018] Figure 4 is a sectional view of the syringe needle in the present utility model;

[0019] Figure 5 is a sectional view of the crochet needle in the present utility model;

[0020] Figure 6 is a schematic diagram when the crochet needle in the present utility model rises;

[0021] Figure 7 is a schematic diagram of the retraction process of the crochet needle in the present utility model;

[0022] Figure 8 is a schematic diagram when the retraction of the crochet needle in the present utility model is completed;

[0023] Reference numerals in the drawings: 1 - head fixed seat, 101 - bearing groove, 2 - transmission assembly, 201 - rotating sleeve, 202 - ball bearing, 203 - synchronous pulley, 204 - drive groove, 205 - upper cam, 206 - lower cam, 3 - syringe needle, 301 - sliding groove, 4 - crochet needle, 401 - hook, 402 - movable rod, 403 - wire groove, 404 - rotating shaft, 405 - storage groove, 5 - wire threading piece, 6 - positioning ring, 7 - first knitting thread, 8 - second knitting thread. Detailed Embodiments

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] Next, in conjunction with Figures 1-8 a detailed description will be given of the head structure of a disc cord knitting machine of the present invention:

[0026] The head structure of a disc cord knitting machine includes a head fixing seat 1, a transmission assembly 2, a needle tube 3, and a crochet hook 4. The head fixing seat 1 is installed on the cord knitting machine. The needle tube 3 is fixedly arranged on the head fixing seat 1. The crochet hook 4 is slidably connected to the needle tube 3. The transmission assembly 2 is rotatably connected to the head fixing seat 1. The transmission assembly 2 can rotate around the axis of the needle tube 3. When the transmission assembly 2 rotates, it can drive the crochet hook 4 to reciprocate relative to the needle tube 3. One end of the crochet hook 4 is provided with a thread-hooking portion. Two threading pieces 5 are provided at one end of the rotating sleeve 201 close to the needle tube 3. The threading pieces 5 are connected to the rotating sleeve 201 through a positioning ring 6. The knitting thread passes through the threading pieces 5 and is hooked by the crochet hook 4 to prevent the knitting thread from being displaced during feeding.

[0027] Six chutes 301 are provided on the side wall of the needle tube 3. Six crochet hooks 4 are provided. The six crochet hooks 4 are respectively arranged in the six chutes 301. The thread-hooking portion extends out of the chute 301 to the end of the needle tube 3 away from the machine fixing seat. The bottom surface of the chute 301 is inclined towards the axis of the needle tube 3, so that an angle is formed between the bottom surface of the chute 301 and the axis of the needle tube 3. The inner wall of the crochet hook 4 fits the bottom surface of the chute 301, and the crochet hook 4 can slide along the bottom surface of the chute 301.

[0028] The thread-hooking portion is composed of a hook 401 and a movable rod 402. The hook 401 and the side wall of the crochet hook 4 form a thread groove 403. One end of the movable rod 402 is rotatably connected to the side wall of the crochet hook 4. The other end of the movable rod 402 can contact the hook head of the hook 401 to close the opening of the thread groove 403. When the opening of the thread groove 403 is closed, the surface of the end of the movable rod 402 close to the hook head protrudes relative to the surface of the hook head, so that when the crochet hook 4 extends out of the needle tube 3, the knitting thread slides over the surface of the hook head and pushes open the movable rod 402, and the opening of the thread groove 403 is opened. A receiving groove 405 is provided on the side wall of the crochet hook 4. After the movable rod 402 is pushed open, it can be flipped into the receiving groove 405. The end of the movable rod 402 away from the rotating shaft 404 protrudes from the surface of the crochet hook 4, so that when the crochet hook 4 retracts, the knitting thread pushes the movable rod 402 out of the receiving groove 405 and closes the opening of the thread groove 403 to prevent the knitting thread from detaching from the thread groove 403.

[0029] The transmission component 2 includes a rotating sleeve 201 and a cam sleeve. The axes of the rotating sleeve 201, the cam sleeve, the machine head fixing seat 1, and the syringe 3 coincide. The cam sleeve is disposed on the surface of the syringe 3. A driving groove 204 is provided on the inner wall of the cam sleeve. One end of the crochet hook 4 away from the thread-hooking portion is slidably connected to the driving groove 204. The inner wall of the rotating sleeve 201 is fixedly connected to the surface of the cam sleeve. Both the cam sleeve and the rotating sleeve 201 can rotate around the axis. A bearing groove 101 is provided on the side wall of the machine head fixing seat 1. A ball bearing 202 is installed in the bearing groove 101. The inner wall of the rotating sleeve 201 is connected to the side wall of the ball bearing 202. A synchronous pulley 203 is provided on the surface of the rotating sleeve 201. The synchronous pulley 203 can be used to drive and connect the belt to the motor. The cam sleeve is composed of an upper cam 205 and a lower cam 206. The upper cam 205 and the lower cam 206 are fixedly connected to the inner wall of the rotating sleeve 201. A driving groove 204 is formed between the upper cam 205 and the lower cam 206. The motor can drive the synchronous pulley 203 to rotate. The synchronous pulley 203 rotates to drive the rotating sleeve 201 and the cam sleeve to rotate. When the cam sleeve rotates, the driving groove 204 pushes the crochet hook 4 to reciprocate along the chute 301.

[0030] Working process: The synchronous pulley 203 rotates to drive the rotating sleeve 201 and the cam sleeve to rotate. When the cam sleeve rotates, the driving groove 204 pushes the crochet hook 4 to reciprocate along the chute 301. When the cam sleeve drives the crochet hook 4 to rise, the crochet hook 4 first passes through the first knitting thread 7. Since one end of the movable rod 402 close to the hook head presses on the surface of the hook head, the first knitting thread 7 slides over the surface of the hook head and then moves between the hook head and the movable rod 402. The crochet hook 4 continues to rise, causing the first knitting thread 7 to push the inner wall of the movable rod 402 to flip it into the storage groove 405 and slide over the inner wall of the movable rod 402. After the movable rod 402 flips, the opening of the wire groove 403 is opened. The crochet hook 4 rises through the second knitting thread 8. Since the opening of the wire groove 403 is opened, the second knitting thread 8 falls into the wire groove 403, causing the hook head to hook the second knitting thread 8. The cam sleeve drives the crochet hook 4 to descend. At this time, one end of the movable rod 402 away from the rotating shaft 404 protrudes from the surface of the crochet hook 4. When the knitting thread slides over the outer wall of the crochet hook 4, it presses against the outer wall of the movable rod 402. The movable rod 402 is lifted by the knitting thread and flips out of the storage groove 405. One end of the movable rod 402 close to the hook head fits with the hook head, closing the opening of the wire groove 403. The knitting thread slides over the hook head, preventing the knitting thread from being hooked into the wire groove 403, so that the knitting threads are cross-woven with each other.

[0031] The bottom surface of the chute 301 is inclined towards the axis of the syringe 3, forming an angle between the bottom surface of the chute 301 and the axis of the syringe 3. The inner wall of the crochet hook 4 fits with the bottom surface of the chute 301. The crochet hook 4 can slide along the bottom surface of the chute 301. The crochet hook 4 protrudes from the syringe 3 in an inclined direction to hook the knitting thread, reducing the required moving stroke of the crochet hook 4, enabling it to weave special ropes such as metal rope belts or paper tapes, and improving production efficiency.

[0032] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A machine head structure of a disc rope belt knitting machine, comprising a machine head fixing seat, a transmission assembly, a needle tube and a hook, wherein the needle tube is fixedly arranged on the machine head fixing seat, the hook and the needle tube are slidably connected, the transmission assembly is rotatably connected to the machine head fixing seat, the transmission assembly can rotate around the axis of the needle tube, and when the transmission assembly rotates, the hook can be driven to reciprocate relative to the needle tube, and a hooking part is arranged at one end of the hook, characterized in that: The side wall of the needle tube is provided with more than two slide grooves, and more than two hook hooks are provided. The number and position of the slide grooves and the hook hooks correspond. The more than two hook hooks are respectively arranged in the more than two slide grooves. The hook thread part passes through the slide groove and extends to the end of the needle tube away from the fixed seat of the machine body. The bottom surface of the slide groove is inclined toward the axis of the needle tube, so that an angle is formed between the bottom surface of the slide groove and the axis of the needle tube. The inner wall of the hook hook is in contact with the bottom surface of the slide groove, and the hook hook can slide along the bottom surface of the slide groove.

2. The head structure of the circular rope braiding machine according to claim 1, characterized in that: The thread hook part is composed of a hook and a movable rod. The hook and the side wall of the hook form a thread groove. One end of the movable rod is rotatably connected to the side wall of the hook, and the other end of the movable rod can contact the hook head of the hook to close the opening of the thread groove.

3. The head structure of the disc rope braiding machine according to claim 2, characterized in that: The side wall of the crochet hook is provided with a storage groove, one end of the movable rod is arranged in the storage groove through a rotating shaft, and the entire movable rod can be turned over into the storage groove.

4. A head structure of a disc rope braiding machine according to any one of claims 1 to 3, characterized in that: The transmission assembly includes a rotating sleeve and a cam sleeve. The axes of the rotating sleeve, the cam sleeve, the machine head fixing seat and the needle tube all coincide. The cam sleeve is arranged on the surface of the needle tube. The inner wall of the cam sleeve is provided with a driving groove. The end of the hook needle away from the hook line part is slidably connected to the driving groove. The inner wall of the rotating sleeve is fixedly connected to the surface of the cam sleeve. The cam sleeve and the rotating sleeve can both rotate around the axis. The surface of the rotating sleeve is provided with a synchronous wheel for connecting to a power source.

5. The head structure of the circular rope braiding machine according to claim 4, characterized in that: The cam sleeve is composed of an upper cam and a lower cam. The upper cam and the lower cam are fixedly connected to the inner wall of the rotating sleeve, and a driving groove is formed between the upper cam and the lower cam.

6. The head structure of the disc rope braiding machine according to claim 4, characterized in that: The side wall of the machine head fixing seat is provided with a bearing groove, a ball bearing is installed in the bearing groove, and the inner wall of the rotating sleeve is connected to the side wall of the ball bearing.

7. The head structure of the circular rope braiding machine according to claim 4, characterized in that: One end of the rotating sleeve close to the needle tube is provided with more than two threading pieces, and the threading pieces are connected to the rotating sleeve through a positioning ring.

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