Automatic yarn breakage stop alarm device for three-dimensional braiding machine

Abstract

The utility model discloses a yarn breakage automatic stoppage alarm device of three -dimensional braider, including dial gear drive mechanism, yarn broken wire alarm mechanism, yarn tension control mechanism and installation track disc. Dial gear drive mechanism drives spindle base to move in the track groove of installation track disc. Yarn tension control mechanism can adjust yarn tension, can trigger alarm mechanism when appearing yarn breakage. The mechanism includes spindle base, spindle body and a plurality of components, and the bearing -equipped rotatable over-eye and guide wire assembly. Realize tension yarn and yarn breakage alarm through cylindrical pin, spring and swing arm cooperation. Yarn broken wire alarm mechanism is composed by sensor installation pipe, positioning clamp and so on, can set up multiple groups and improve detection accuracy. Spindle base includes upper plate, lower plate and stand, and the lower plate has the slider cooperation with track groove. Track groove is "8" type, and the both sides of yarn storage tube base are hollow. The device is strong in adaptability, low in cost, easy to maintain, can detect yarn breakage and positioning in time, improves and improves the quality and efficiency of braiding.

Description

Technical Field

[0001] This utility model relates to the field of three-dimensional weaving equipment technology, specifically to an automatic stop alarm device for yarn breakage of a three-dimensional weaving machine. Background Technology

[0002] 3D braiding machines occupy a crucial position in today's composite material manufacturing field. With their unique braiding process, they can produce high-strength, high-performance composite material products, widely used in aerospace, automotive manufacturing, sporting goods, and many other industries. In this complex production process, the yarn breakage detection device is undoubtedly a key component ensuring the normal operation of the 3D braiding machine and the quality of the products.

[0003] In the intense yet orderly process of three-dimensional weaving, if a yarn breakage occurs and cannot be detected and addressed promptly, it will lead to serious defects in the woven product. These defects may manifest as reduced product strength, uneven appearance, and dimensional deviations, significantly impacting product quality and performance. More seriously, unaddressed yarn breakage can disrupt the continuity of the entire production process. Production interruptions not only increase time costs but also affect the smooth operation of subsequent processes, thereby reducing production efficiency and increasing the company's operating costs. Therefore, a reliable yarn breakage detection device is of immeasurable importance for improving weaving quality and reducing production costs.

[0004] Currently, common yarn breakage detection devices mainly encompass the following technologies: photoelectric detection, sensor detection, image recognition, and ultrasonic detection. While these technologies offer feasible solutions for yarn breakage detection to some extent, they also present some significant challenges. Some detection devices exhibit poor applicability when dealing with different yarn materials and weaving processes. Due to the diversity of yarn materials and the complexity of weaving processes, some detection devices cannot accurately detect all types of yarn breaks, thus affecting their application in actual production. Furthermore, detection accuracy and stability need further improvement. In the field of high-precision composite material manufacturing, even minor yarn breaks can have a significant impact on product quality. However, some existing detection devices still have shortcomings in detection accuracy, prone to false alarms or missed alarms. Stability is also a critical issue; some detection devices may experience performance degradation and frequent malfunctions during long-term operation, affecting normal production. Moreover, the cost of these detection devices is generally high, which is a heavy burden for many small and medium-sized enterprises, making their widespread adoption difficult.

[0005] Therefore, there is an urgent need for an automatic shutdown alarm device for three-dimensional braiding machines that is highly adaptable to yarn materials and processes, low in cost, and highly stable. Utility Model Content

[0006] The purpose of this utility model is to provide an automatic stop alarm device for yarn breakage of a three-dimensional knitting machine, hoping to make up for the deficiencies of the prior art and solve all or part of the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An automatic stop alarm device for yarn breakage on a three-dimensional braiding machine includes a dial gear transmission mechanism, a yarn breakage alarm mechanism, a yarn tension control mechanism, and a mounting track. Several dial gear transmission mechanisms are vertically arranged around the mounting track. A ring of grooves is formed on the upper surface of the mounting track corresponding to the positions of the dial gear transmission mechanisms. The yarn tension control mechanism is vertically positioned within the grooves and engages with the dial gear transmission mechanisms. The yarn breakage alarm mechanism is mounted on the mounting track and engages with the yarn tension control mechanism.

[0009] The yarn tension control mechanism can adjust the yarn tension to maintain tension during the weaving process. It can also trigger a yarn breakage alarm mechanism to detect yarn breakage in a timely manner.

[0010] The dial gear transmission mechanism includes a gear, a dial, a gear shaft, and a guide rod. The gear is fixedly connected to the dial, the gear shaft passes through the gear side, and the guide rod passes through the dial side and abuts against the gear shaft. The dial is rotatably fixed on a mounting track, and the gear and dial are located on opposite sides of the mounting track. A motor drives the gear to rotate, and the gear, in conjunction with the dial, drives the dial to rotate. The spindle seat, in conjunction with the dial, rotates with the dial and moves along the track groove on the mounting track.

[0011] The yarn tension control mechanism includes a spindle base, a spindle body, a swing arm, a yarn storage tube shaft, a head yarn guide wheel, a middle yarn guide wheel, a tail yarn guide wheel, a yarn guide tube, a guide ceramic component assembly, and a yarn storage tube base. The spindle body is fixed on the spindle base. The swing arm is oscillating up and down and is located at the lower part of the spindle body. The head yarn guide wheel is located on the swing arm, the middle yarn guide wheel is located in the middle of the spindle body, and the tail yarn guide wheel is located on the guide ceramic component assembly. The guide ceramic component assembly is located at the upper part of the spindle body. The yarn guide tube is vertically located on the side of the spindle body. The yarn storage tube base is located on the spindle body, above the swing arm. The yarn storage tube shaft passes through the yarn storage tube base and is fixed on the spindle body. The bottom of the spindle base mates with the track groove, and the side of the spindle base mates with the groove on the dial.

[0012] Bearings are installed in the head guide wheel, middle guide wheel, and tail guide wheel, and each guide wheel can rotate; the bottom of the wire guide ceramic component assembly is equipped with a bearing, and the two ends of the wire guide rod are equipped with bearings and fixed to the spindle body, and the wire guide ceramic component assembly can rotate; the two ends of the wire guide tube are equipped with bearings and fixed to the spindle body, and the wire guide tube can rotate.

[0013] It also includes cylindrical pin A, spring A, cylindrical pin B, and spring B. All three components are located inside the spindle body. One end of spring A abuts against the spindle seat, and the other end connects to cylindrical pin A. Cylindrical pin A mates with the yarn storage tube base. One end of spring B abuts against the yarn storage tube base, and the other end connects to cylindrical pin B. Cylindrical pins A and B are respectively connected to a swing arm via pins. The swing arm oscillates with changes in yarn tension. When the swing arm oscillates, it drives cylindrical pins A and B to move and compress springs A and B. Cylindrical pin A moves inward, separating from the yarn storage tube base. The yarn storage tube rotates along its axis under the action of the yarn, achieving the purpose of tension release. In the event of yarn breakage, the swing arm returns to its origin under the action of springs A and B. During rotation, the swing arm encounters the positioning clamp, triggering a sensor alarm.

[0014] The yarn breakage alarm mechanism includes a sensor mounting tube, a positioning clamp, a limiting rotating rod, and a positioning ring. The limiting rotating rod is connected to the sensor mounting tube, and the positioning clamp and positioning ring are respectively fixed to the limiting rotating rod. The sensor mounting tube is fixed to the mounting track plate, and the positioning clamp is positioned to cooperate with the swing arm. At least one set of the yarn breakage alarm mechanism is required, and several sets can be set along the outer perimeter of the track groove as needed. The more sets set, the higher the yarn breakage detection accuracy. The position and angle of the positioning clamp can be adjusted according to actual conditions. During the weaving process, when a yarn breakage occurs, the swing arm will hit the positioning clamp, which will drive the limiting rotating rod to rotate, triggering the sensor alarm.

[0015] The spindle holder includes an upper plate, a lower plate, and a connecting column. The upper and lower plates are spaced apart and connected by the connecting column. The spindle body is mounted on the upper plate, and the lower plate engages with a track groove. It also includes a slider located on the lower part of the lower plate, which engages with the track groove to allow the yarn tension control mechanism to slide along the track groove's trajectory. The track groove is figure-eight shaped. The yarn storage tube base has open sides; one side engages with cylindrical pin A, and the other side connects to the yarn storage tube. When the swing arm swings, cylindrical pin A moves inward, preventing the yarn storage tube base from contacting it, allowing the yarn storage tube to rotate. Simultaneously, the spring force can be adjusted to regulate the yarn feeding tension.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] The coordinated action of the dial gear transmission mechanism and the yarn tension control mechanism ensures the accuracy of yarn position and the stability of movement during the weaving process. At the same time, the tension can be adjusted according to different yarn materials and process requirements, so that the yarn is always in the optimal tension state, thereby improving weaving quality and efficiency.

[0018] The combination of the yarn breakage alarm mechanism and the yarn tension control mechanism can trigger the sensor alarm in time when the yarn breaks and accurately locate the specific broken yarn, making it convenient for operators to handle quickly and reducing production interruption time and defect rate caused by yarn breakage.

[0019] This invention is highly adaptable to various yarn materials and processes, suitable for weaving needs of different types of yarns. Its low cost, small size, and ease of maintenance reduce production costs and maintenance difficulties for enterprises. Especially for multi-spindle three-dimensional braiding machines, it offers higher economic benefits and enhances the market competitiveness of enterprises.

[0020] The rational design of each structural component and the selection of high-quality materials ensure the overall stability and reliability of the device. This reduces the probability of equipment failure, guarantees the continuous and stable operation of the weaving process, and thus improves the quality and consistency of the woven products.

[0021] The tension of the yarn can be adjusted by adjusting the spring force, and the position and angle of the positioning clamp can be adjusted according to the actual situation, so that this utility model can adapt to different weaving processes and production requirements and has a wide range of application prospects. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the automatic stop alarm device for yarn breakage of a three-dimensional braiding machine according to the present invention;

[0024] Figure 2 This is a schematic diagram of the yarn tension control mechanism described in this utility model. Figure 1 ;

[0025] Figure 3 This is a schematic diagram of the yarn tension control mechanism described in this utility model. Figure 2 ;

[0026] Figure 4This is a schematic diagram of the dial gear transmission mechanism of this utility model;

[0027] Figure 5 This is a schematic diagram of the yarn breakage alarm mechanism described in this utility model;

[0028] Figure 6 This is a schematic diagram of the internal structure of the spindle body described in this utility model;

[0029] Figure 7 This is a schematic diagram of the structure in the braided state described in this utility model;

[0030] Figure 8 This is a schematic diagram of the structure under the yarn breakage state described in this utility model. Figure 1 ;

[0031] Figure 9 This is a schematic diagram of the structure under the yarn breakage state described in this utility model. Figure 2 ;

[0032] Figure 10 This is a schematic diagram of the mounting track disk structure described in this utility model.

[0033] Attached Figure

[0034] 1. Dial gear transmission mechanism; 2. Yarn breakage alarm mechanism; 3. Yarn tension control mechanism; 4. Mounting track plate;

[0035] 11. Gear; 12. Dial; 13. Gear shaft; 14. Lead screw;

[0036] 21. Sensor mounting rod; 22. Positioning clamp; 23. Limiting rotation rod; 24. Positioning ring;

[0037] 301. Spindle base; 302. Spindle body; 303. Swing arm; 304. Yarn storage tube; 305. Yarn storage tube shaft; 306. Head guide roller; 307. Middle guide roller; 308. Tail guide roller; 309. Guide tube; 310. Guide ceramic component assembly; 311. Yarn storage tube base; 312. Cylindrical pin A; 313. Spring A; 314. Cylindrical pin B; 315. Spring B. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0040] It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0041] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0042] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] Please see Figures 1 to 10 This embodiment provides an automatic stop alarm device for yarn breakage of a three-dimensional weaving machine.

[0044] An automatic stop alarm device for yarn breakage of a three-dimensional knitting machine includes a dial gear transmission mechanism 1, a yarn breakage alarm mechanism 2, a yarn tension control mechanism 3, and a mounting track 4. Several dial gear transmission mechanisms 1 are vertically arranged around the mounting track 4. A track groove is formed around the upper surface of the mounting track 4 at a position corresponding to the dial gear transmission mechanism 1. The yarn tension control mechanism 3 is vertically arranged in the track groove and is positioned to cooperate with the dial gear transmission mechanism 1. The yarn breakage alarm mechanism 2 is arranged on the mounting track 4 and is positioned to cooperate with the yarn tension control mechanism 3.

[0045] Further optimization of the above scheme is made. The dial gear transmission mechanism 1 includes a gear 11, a dial 12, a gear shaft 13, and a guide rod 14. The gear 11 is fixedly connected to the dial 12. The gear shaft 13 passes through the side of the gear 11, and the guide rod 14 passes through the side of the dial 12 and abuts against the gear shaft 13. The dial 12 is rotatably fixed on the mounting track 4 through bearings. The gear 11 and the dial 12 are arranged on both sides of the mounting track 4.

[0046] Further optimization of the above scheme is made to the yarn tension control mechanism 3, which includes a spindle base 301, a spindle body 302, a swing arm 303, a yarn storage tube shaft 305, a head yarn guide roller 306, a middle yarn guide roller 307, a tail yarn guide roller 308, a yarn guide tube 309, a guide ceramic component assembly 310, and a yarn storage tube base 311. The spindle body 302 is fixed on the spindle base 301. The swing arm 303 is swayably mounted on the lower part of the spindle body 302. The head yarn guide roller 306 is mounted on the swing arm 303, and the middle yarn guide roller 307... The tail guide wheel 308 is located in the middle of the spindle body 302. The guide ceramic component 310 is located on the upper part of the spindle body 302. The yarn guide tube 309 is vertically located on the side of the spindle body 302. The yarn storage tube base 311 is located on the spindle body 302, above the swing arm 303. The yarn storage tube shaft 305 passes through the yarn storage tube base 311 and is fixed on the spindle body 302. The bottom of the spindle seat 301 cooperates with the track groove, and the side of the spindle seat 301 cooperates with the groove on the dial 12.

[0047] Optional optimization methods also include cylindrical pin A312, spring A313, cylindrical pin B314, and spring B315. Cylindrical pin A312, spring A313, cylindrical pin B314, and spring B315 are all located inside the spindle body 302. One end of spring A313 abuts against the spindle seat 301, and the other end is connected to cylindrical pin A312. Cylindrical pin A312 is positioned to cooperate with the yarn storage tube base 311. One end of spring B315 abuts against the yarn storage tube base 311, and the other end is connected to cylindrical pin B314. Cylindrical pin A312 and cylindrical pin B314 are respectively connected to the swing arm 303 through pin shafts.

[0048] Further optimization of the above scheme is carried out. The yarn breakage alarm mechanism 2 includes a sensor mounting tube 21, a positioning clamp 22, a limiting rotating rod 23, and a positioning ring 24. The limiting rotating rod 23 is connected to the sensor mounting tube 21. The positioning clamp 22 and the positioning ring 24 are respectively fixed on the limiting rotating rod 23. The sensor mounting tube 21 is fixed on the mounting track plate 4. The positioning clamp 22 is positioned in conjunction with the swing arm 303.

[0049] In an optional optimization method, the spindle holder 301 includes an upper spindle holder plate, a lower spindle holder plate, and a connecting column. The upper spindle holder plate and the lower spindle holder plate are spaced apart and connected by the connecting column. The spindle body 302 is mounted on the upper spindle holder plate, and the lower spindle holder plate cooperates with the track groove.

[0050] Optional optimization methods also include a slider, which is located at the lower part of the spindle seat lower plate. The slider cooperates with the track groove, so that the yarn tension control mechanism slides along the track groove trajectory.

[0051] An optional optimization method is to use a figure-eight shaped track groove.

[0052] In an optional optimization method, the yarn storage tube base 311 is hollowed out on both sides, with one side cooperating with the cylindrical pin A312 and the other side connected to the yarn storage tube 304. When the swing arm 303 swings, the cylindrical pin A312 moves inward, and the yarn storage tube base 311 cannot touch the cylindrical pin A312. The yarn storage tube 304 can rotate, and the spring force can be adjusted to adjust the yarn release tension.

[0053] Working principle:

[0054] During operation, this device is in Figure 7 In the indicated state, the yarn emerges from the yarn storage tube 304, passes through the yarn tube 309, then through the intermediate yarn guide spool 307, then through the head yarn guide spool 306, and finally through the tail yarn guide spool 307. After passing through the guide ceramic component assembly 310, it is used for weaving. During weaving, the yarn tension increases, causing the swing arm 303 to swing to the right. The swing arm 303 drives the cylindrical pin A312 to move inward and separate from the yarn storage tube base 311. The yarn storage tube 304 rotates around the yarn storage tube shaft 305 to release the yarn. When a yarn breakage occurs, the cylindrical pin A312 moves outward under the action of the spring A313, and the cylindrical pin A312 jams the yarn storage tube base 311, preventing it from releasing yarn. At the same time, the swing arm 303 returns to its original position under the combined action of the springs A312 and B314. Figure 7 As shown, during the weaving process, the swing arm 303 will touch the positioning clamp 22, triggering the yarn breakage alarm device and stopping the weaving machine.

[0055] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic stop alarm device for yarn breakage on a three-dimensional knitting machine, characterized in that: The device includes a dial gear transmission mechanism (1), a yarn breakage alarm mechanism (2), a yarn tension control mechanism (3), and a mounting track (4). Several dial gear transmission mechanisms (1) are vertically arranged around the mounting track (4). A track groove is opened around the upper surface of the mounting track (4) at the position corresponding to the dial gear transmission mechanism (1). The yarn tension control mechanism (3) is vertically arranged in the track groove and is in position with the dial gear transmission mechanism (1). The yarn breakage alarm mechanism (2) is arranged on the mounting track (4) and is in position with the yarn tension control mechanism (3).

2. The automatic yarn breakage alarm device for a three-dimensional braiding machine according to claim 1, characterized in that: The dial gear transmission mechanism (1) includes a gear (11), a dial (12), a gear shaft (13), and a guide rod (14). The gear (11) is fixedly connected to the dial (12). The gear shaft (13) passes through the gear (11) from the side, and the guide rod (14) passes through the dial (12) from the side and abuts against the gear shaft (13). The dial (12) is rotatably fixed on the mounting track (4). The gear (11) and the dial (12) are located on both sides of the mounting track (4).

3. The automatic yarn breakage alarm device for a three-dimensional braiding machine according to claim 2, characterized in that: The yarn tension control mechanism (3) includes a spindle base (301), a spindle body (302), a swing arm (303), a yarn storage tube shaft (305), a head yarn guide wheel (306), a middle yarn guide wheel (307), a tail yarn guide wheel (308), a yarn guide tube (309), a yarn guide ceramic component assembly (310), and a yarn storage tube base (311). The spindle body (302) is fixed on the spindle base (301). The swing arm (303) is swaying up and down and is located at the lower part of the spindle body (302). The head yarn guide wheel (306) is located on the swing arm (303), and the middle yarn guide wheel (307) is located on the spindle body. In the middle of the main body (302), the tail thread guide wheel (308) is set on the guide ceramic component assembly (310), the guide ceramic component assembly (310) is set on the upper part of the spindle main body (302), the thread guide tube (309) is vertically set on the side of the spindle main body (302), the yarn storage tube base (311) is set on the spindle main body (302) and located above the swing arm (303), the yarn storage tube shaft (305) passes through the yarn storage tube base (311) and is fixed on the spindle main body (302), the bottom of the spindle seat (301) cooperates with the track groove, and the side of the spindle seat (301) cooperates with the groove on the dial (12).

4. The automatic yarn breakage alarm device for a three-dimensional braiding machine according to claim 3, characterized in that: It also includes cylindrical pin A (312), spring A (313), cylindrical pin B (314), and spring B (315). Cylindrical pin A (312), spring A (313), cylindrical pin B (314), and spring B (315) are all located inside the spindle body (302). One end of spring A (313) abuts against the spindle seat (301), and the other end is connected to cylindrical pin A (312). Cylindrical pin A (312) is positioned to match the yarn storage tube base (311). One end of spring B (315) abuts against the yarn storage tube base (311), and the other end is connected to cylindrical pin B (314). Cylindrical pin A (312) and cylindrical pin B (314) are respectively connected to the swing arm (303) through pin shafts.

5. The automatic yarn breakage alarm device for a three-dimensional knitting machine according to claim 3, characterized in that: The yarn breakage alarm mechanism (2) includes a sensor mounting tube (21), a positioning clamp (22), a limiting rotating rod (23), and a positioning ring (24). The limiting rotating rod (23) is connected to the sensor mounting tube (21), the positioning clamp (22) and the positioning ring (24) are respectively fixed on the limiting rotating rod (23), the sensor mounting tube (21) is fixed on the mounting track plate (4), and the positioning clamp (22) is in position with the swing arm (303).

6. The automatic yarn breakage alarm device for a three-dimensional braiding machine according to claim 3, characterized in that: The spindle holder (301) includes an upper plate, a lower plate, and a connecting column. The upper plate and the lower plate are spaced apart and connected by the connecting column. The spindle body (302) is mounted on the upper plate, and the lower plate engages with the track groove.

7. The automatic yarn breakage alarm device for a three-dimensional braiding machine according to claim 6, characterized in that: It also includes a slider, which is located on the lower part of the spindle seat plate and engages with the track groove.

8. The automatic stop alarm device for yarn breakage of a three-dimensional braiding machine according to claim 1, characterized in that: The track groove is an "8" shaped track groove.

9. The automatic yarn breakage alarm device for a three-dimensional braiding machine according to claim 3, characterized in that: The yarn storage tube base (311) has hollowed-out sides, one side of which is engaged with the cylindrical pin A (312).

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