A needle threading machine for suturing needles

Abstract

This utility model discloses a needle threading machine suitable for suture needles, relating to the field of medical device manufacturing. It includes a frame, on which a needle vibrating plate, a robotic arm, a thread wheel traversing mechanism, a thread wheel assembly, and a thread loading mechanism are fixedly mounted on a worktable. Multiple bent suture needles are placed inside the needle vibrating plate. The robotic arm picks up a single bent suture needle and delivers it to the thread loading mechanism. The thread wheel assembly contains suture thread. The thread wheel traversing mechanism drives the thread wheel assembly to move left and right. When the thread wheel assembly reaches its rightmost extreme position, the suture thread is inserted into the fine hole of the bent suture needle. The thread loading mechanism flattens the fine hole to fix the suture thread. Compared with existing technologies, this utility model replaces manual operation with a fully automated mechanical structure, eliminating the risk of instrument contamination and personnel injuries caused by manual contact. Simultaneously, the mechanical structure enables controllable flattening of the fine hole, improving assembly accuracy and product yield, significantly increasing production efficiency, and meeting the needs of large-scale medical device production.

Description

Technical Field

[0001] This utility model relates to the field of medical device manufacturing, and in particular to a needle threading machine suitable for suture needles. Background Technology

[0002] In the medical field, curved suture needles are core instruments for suturing wounds during surgery. Their use requires assembly with sutures through a pre-set small hole in the needle tip. Currently, the industry primarily relies on manual operation for assembling curved suture needles and sutures. This method suffers from several technical shortcomings and production risks, specifically in the following three aspects: 1. Significant hygiene and safety risks and personnel risks: During manual assembly, workers' hands need to come into direct contact with needles and sutures, which can easily lead to contamination of sutures or needles due to microorganisms on the hands, increasing the risk of postoperative infection; in addition, because the curved suture needles are sharp, they can easily puncture the skin during operation, causing workers to suffer cuts and punctures, posing occupational health risks.

[0003] 2. Low production precision and yield: The critical assembly step of "flattening the needle pore to fix the suture" requires manual control of the pressure, making it difficult to ensure that the flattening degree of each suture needle is consistent. If the pressure is too low, the suture is prone to loosening and falling off, affecting the stability of surgical use; if the pressure is too high, it can easily cause the needle pore to deform and crack, directly causing product scrap, keeping the overall production yield at a low level for a long time, usually only reaching 75%-85%.

[0004] 3. Mismatch between production efficiency and industry demand: With the continued growth in demand for sutures in the medical industry, the efficiency bottleneck of manual assembly has become increasingly apparent. A skilled worker can only assemble 800-1200 sutures per day on average, and fatigue is likely to occur during long-term operation, leading to a further decline in efficiency and making it impossible to meet the delivery requirements of large-scale production.

[0005] In addition, the few existing semi-automatic auxiliary equipment can only realize the single function of feeding suture needles or sutures. Manual intervention is still required for positioning, inserting sutures and flattening steps. This fails to fundamentally solve the core pain point of manual operation. The industry urgently needs fully automated and high-precision assembly equipment to break through the current technical bottleneck. Utility Model Content

[0006] To overcome the shortcomings mentioned above, this utility model provides a technical solution that can solve the above problems.

[0007] A needle threading machine suitable for suture needles includes a frame, a worktable fixedly mounted on the frame, and a needle vibrating plate, a robot arm, a thread wheel traversing mechanism, a thread wheel unit, and a thread loading mechanism fixedly mounted on the worktable. The needle vibrating plate contains multiple bent suture needles. The robotic arm picks up a single bent suture needle and transports it to the thread loading mechanism. One end of the bent suture needle has a small hole. The thread wheel assembly contains suture thread. The thread wheel transverse movement mechanism drives the thread wheel assembly to move left and right. When the thread wheel assembly moves to the rightmost extreme position, the suture thread is inserted into the small hole. The thread-loading mechanism flattens the fine hole of the bent suture needle, so that the suture thread is fixed in the fine hole.

[0008] Furthermore, the robotic arm includes a Y-axis conveying mechanism, an X-axis conveying mechanism, a Z-axis conveying mechanism, a lifting platform, a rotating mechanism, a first pneumatic finger, and a vision detector. The Y-axis conveying mechanism is fixedly mounted on the worktable and drives the X-axis conveying mechanism to translate forward and backward. The X-axis conveying mechanism drives the Z-axis conveying mechanism to translate left and right. The Z-axis conveying mechanism drives the lifting platform to move up and down. The rotating mechanism is fixedly mounted on the lifting platform and drives the first pneumatic finger to rotate. The vision detector is fixedly mounted on the outside of the lifting platform and provides visual detection for the first pneumatic finger.

[0009] Furthermore, the thread pulley traversing mechanism, the Y-axis conveying mechanism, the X-axis conveying mechanism, and the Z-axis conveying mechanism all adopt screw conveyors.

[0010] Furthermore: A thread insertion unit is provided on the side of the thread loading unit near the thread wheel unit. The thread insertion unit includes a positioning bracket, a lifting cylinder, a first telescopic cylinder, and a second pneumatic finger. The positioning bracket is fixedly installed on the workbench, and the lifting cylinder is fixedly installed on the side of the positioning bracket. The lifting cylinder drives the first telescopic cylinder to move up and down, and the first telescopic cylinder drives the second pneumatic finger to move left and right. The second pneumatic finger picks up the suture and inserts it into the fine hole of the curved suture needle through the lateral movement of the first telescopic cylinder.

[0011] Furthermore: the thread wheel lateral movement mechanism drives the thread wheel unit to move to the left and gradually pull out the sewing thread. A positioning and cutting mechanism is fixedly installed on the worktable. The positioning and cutting mechanism performs a cutting action after the sewing thread is pulled out.

[0012] Furthermore: the positioning and cutting mechanism includes a rotating bracket, a rotating shaft, a servo motor, a thread cutting head, and two thread clamping heads. The rotating bracket is fixedly installed on the worktable, the rotating shaft is rotatably fitted within the rotating bracket, the servo motor is fixedly installed on the rotating bracket, and the servo motor drives the rotating shaft to rotate. The thread cutting head and the two thread clamping heads are all fixedly installed on the rotating shaft. One of the thread clamping heads provides the thread cutting and positioning for the thread cutting head, and the other thread clamping head is located on the left side of the thread loading mechanism, and this thread clamping head aligns the thread with the fine hole of the curved sewing needle.

[0013] Furthermore: the thread cutting head includes a first shaft frame, a second telescopic cylinder, a third pneumatic finger, and two cutting blades. The first shaft frame is fixedly installed on the rotating shaft, and the second telescopic cylinder is fixedly installed on the side of the first shaft frame. The second telescopic cylinder drives the third pneumatic finger to move closer to or away from the suture line. The third pneumatic finger drives the two cutting blades to move closer to or separate from each other. When the two cutting blades move closer to each other, the suture line is cut.

[0014] Furthermore: the suture clamping head includes a second shaft frame, a third telescopic cylinder, a fourth pneumatic finger, and two positioning jaws. The second shaft frame is fixedly installed on the rotating shaft, and the third telescopic cylinder is fixedly installed on the side of the second shaft frame. The third telescopic cylinder drives the fourth pneumatic finger to move closer to or away from the suture. The fourth pneumatic finger drives the two positioning jaws to move closer to or separate from each other. When the two positioning jaws move closer to each other, they clamp the suture.

[0015] Furthermore: a product storage slot is fixedly installed on the workbench, the product storage slot is located in front of the rotating bracket, and a forward-tilting guide plate is fixedly installed inside the rotating bracket, the guide plate being located between the rotating shaft and the product storage slot.

[0016] Furthermore: the thread reel unit includes a thread frame, a main thread reel, a feed tube, and several feed pressure rollers. The thread reel lateral movement mechanism drives the thread frame to move left and right. The main thread reel is rotated and installed on the upper side of the thread frame. The sewing thread is wound and installed on the main thread reel. Several feed pressure rollers are installed on the thread frame. After the sewing thread is pulled out from the main thread reel, it is fed into the feed tube through several feed pressure rollers.

[0017] Furthermore: a pressure roller bracket is fixedly installed on the wire frame. There are two wire feeding pressure rollers. One wire feeding pressure roller is fixedly installed in the pressure roller bracket, and the other wire feeding pressure roller is slidably installed in the pressure roller bracket. A side plate is fixedly installed on the rear side of the pressure roller bracket. A toggle handle is installed on the side plate with damping and sliding fit. The front end of the toggle handle drives the wire feeding pressure roller to slide in the pressure roller bracket, so that the two wire feeding pressure rollers move closer to each other or separate from each other.

[0018] Furthermore: at least two through holes are formed on the side plate, and rubber damping rings are fixedly installed in the through holes. At least two plug rods are fixedly installed on the front side of the toggle handle. The plug rods are slidably installed in the through holes through the rubber damping rings. The front end of the plug rod drives the feed pressure roller to move back and forth.

[0019] Furthermore, several guide wheels are rotatably mounted on the wire frame. After the sewing thread is pulled out from the main wire wheel, it is transported through several guide wheels to the wire feeding pressure wheel and the wire feeding tube.

[0020] Compared with the prior art, the beneficial effects of this utility model are: 1. Eliminate human contact contamination: The equipment automatically feeds the needles via a vibratory feeder, precisely picks and delivers the needles using a robotic arm, and the insertion unit and thread wheel unit work together to complete the insertion of the sutures. The entire process does not require direct human contact with the curved suture needles and sutures, avoiding contamination of the instruments by hand microorganisms, reducing the risk of postoperative infection from the source, and meeting the hygiene standards for medical device production.

[0021] 2. Avoiding operator injuries: Manual assembly is prone to cuts and punctures from the sharp tip of the bent suture needle. This equipment replaces the manual contact with the needle with a fully automated mechanical structure, completely eliminating occupational health risks for workers and improving the safety of the production process.

[0022] 3. Precise control of assembly positioning: The robotic arm uses X-axis, Y-axis, and Z-axis lead screw conveyors to achieve multi-dimensional high-precision movement. Combined with the positioning of the vision detector and the steering of the rotation mechanism, it can accurately deliver the bent suture needle to the designated position of the suture assembly mechanism. The suture insertion unit ensures that the suture and the needle tip are precisely aligned and inserted through the coordination of the lifting cylinder and the first telescopic cylinder, avoiding assembly failure caused by human positioning deviation.

[0023] 4. Stable control of fine hole flattening quality: The suture assembly mechanism replaces manual flattening of needle fine holes. It can stably control the flattening force through mechanical structure, avoiding the problems of "insufficient force causing suture loosening and excessive force causing fine hole cracking" in manual operation. It significantly improves product consistency and increases the production yield from 75%-85% of manual assembly to over 95%.

[0024] 5. Fully Automated Process for Reduced Time and Increased Efficiency: The equipment integrates fully automated operation of needle feeding, suture delivery, insertion, cutting, flattening and fixing, and product storage, eliminating the need for manual intervention at each step. The robotic arm's gripping and conveying efficiency is 3-5 times higher than manual labor, and the positioning and cutting mechanism can simultaneously complete suture positioning and cutting, avoiding the time wasted on secondary positioning after manual cutting. A single unit can achieve a daily production capacity of 5,000-8,000 sutures, far exceeding the 800-1,200 sutures per day achieved manually, meeting the large-scale production needs of the medical industry.

[0025] 6. Reduce the impact of human fatigue: Long-term manual operation can easily lead to fatigue and decreased efficiency. This equipment can achieve continuous production 24 hours a day through continuous and stable mechanical operation (raw materials need to be replenished regularly), further improving the overall production efficiency.

[0026] 7. Adaptable to different specifications of sutures: In the thread wheel unit, the sliding thread feeding roller can be moved by turning the handle, and the distance between the two thread feeding rollers can be flexibly adjusted. With the locking function of the rubber damping ring, it can stably feed sutures of different diameters. It can meet the assembly requirements of various specifications of bent suture needles without changing equipment parts, thus improving the versatility of the equipment.

[0027] 8. Flexible adjustment of suture length: The suture wheel lateral movement mechanism can drive the suture wheel unit to gradually pull out the suture, and the positioning and cutting mechanism can accurately cut the suture length according to production needs, avoiding material waste and assembly problems caused by sutures that are too long or too short, and adapting to the specifications of suture needles for different surgical scenarios.

[0028] 9. Simplified operation process: The various mechanisms of the equipment achieve automated operation through mechanical collaboration. The staff only need to replenish the bent suture needles to the needle vibrating plate and the suture thread to the thread wheel unit periodically. No complicated operation training is required, which reduces labor costs and the operating threshold.

[0029] 10. Automatic product storage: The assembled sewing needles can automatically slide into the product storage slot through the inclined guide plate inside the rotating bracket, avoiding the steps of manual sorting and storage, reducing the connection time of production links, and further improving the overall production smoothness.

[0030] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0031] 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 of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 yes Figure 1 A structural diagram from another perspective; Figure 3 This is a structural schematic diagram of the robotic arm and the lateral movement mechanism of the thread wheel; Figure 4 yes Figure 3 Enlarged structural diagram at point A in the diagram; Figure 5 This is a schematic diagram of the installation structure of the rubber damping ring; Figure 6 This is a schematic diagram of the installation structure of the wiring mechanism and the wiring unit; Figure 7 This is an enlarged structural diagram of the wiring mechanism and the wiring unit; Figure 8 This is a schematic diagram of the installation structure of the positioning and cutting mechanism; Figure 9 This is a schematic diagram of the wire cutting machine head; Figure 10 This is a schematic diagram of the wire clamping machine head; Figure 11 This is a schematic diagram of the assembly of a curved suture needle and a suture thread. Figure 12 This is a structural diagram of the present invention when the box and cabinet door cover the workbench.

[0033] The diagram shows: 1. Frame; 2. Worktable; 3. Needle vibratory feeder; 4. Robotic arm; 41. Y-axis conveyor mechanism; 42. X-axis conveyor mechanism; 43. Z-axis conveyor mechanism; 44. Lifting platform; 45. Rotation mechanism; 46. First pneumatic finger; 47. Vision detector; 5. Thread wheel traversing mechanism; 6. Thread wheel unit; 61. Thread frame; 62. Main thread wheel; 63. Thread feeding tube; 64. Thread feeding pressure roller; 7. Thread loading mechanism; 8. Bent suture needle; 9. Fine hole; 10. Suture thread; 11. Thread insertion unit; 111. Positioning bracket; 112. Lifting cylinder; 113. First telescopic cylinder; 114. Second telescopic cylinder. 12. Positioning and cutting mechanism; 121. Rotating bracket; 122. Rotating shaft; 123. Servo motor; 124. Thread cutting head; 1241. First shaft frame; 1242. Second telescopic cylinder; 1243. Third pneumatic finger; 1244. Cutting knife; 125. Thread clamping head; 1251. Second shaft frame; 1252. Third telescopic cylinder; 1253. Fourth pneumatic finger; 1254. Positioning gripper; 13. Product storage slot; 14. Guide plate; 15. Pressure roller bracket; 16. Side plate; 17. Toggle handle; 18. Through hole; 19. Rubber damping ring; 20. Insert rod; 21. Wire guide wheel. Detailed Implementation

[0034] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0035] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0036] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0037] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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.

[0039] like Figures 1-12 As shown, the present invention provides a needle threading machine suitable for suture needles, including a frame 1, a workbench 2 fixedly installed on the frame 1, and a needle vibrating plate 3, a robot arm 4, a thread wheel traversing mechanism 5, a thread wheel unit 6 and a thread loading mechanism 7 fixedly installed on the workbench 2. Multiple bent-head suture needles 8 are placed inside the needle vibrating plate 3. The robot arm 4 picks up a single bent-head suture needle 8 and transports it to the thread loading mechanism 7. One end of the bent-head suture needle 8 is formed with a fine hole 9. The thread wheel assembly 6 is equipped with a suture 10. The thread wheel transverse movement mechanism 5 drives the thread wheel assembly 6 to move left and right. When the thread wheel assembly 6 moves to the rightmost extreme position, the suture 10 is inserted into the fine hole 9. The thread-loading mechanism 7 flattens the fine hole 9 of the bent-head suture needle 8, so that the suture 10 is fixed in the fine hole 9; The principle is as follows: the bent suture needles 8 are placed in batches in the needle vibrating plate 3. The robotic arm 4 takes out the bent suture needles 8 one by one from the needle vibrating plate 3. The needle vibrating plate 3 facilitates the loading operation of the bent suture needles 8 at the robotic arm 4. The needles are then transported to the thread loading mechanism 7 by the robotic arm 4. At this time, one end of the small hole 9 of the bent suture needle 8 is aligned with the suture thread 10 of the thread wheel unit 6. The thread wheel transverse movement mechanism 5 drives the suture thread 10 to be inserted into the small hole 9. Finally, the thread loading mechanism 7 flattens the small hole 9 of the bent suture needle 8 to achieve the fixed assembly between the suture thread 10 and the bent suture needle 8.

[0040] Furthermore: the robotic arm 4 includes a Y-axis conveying mechanism 41, an X-axis conveying mechanism 42, a Z-axis conveying mechanism 43, a lifting platform 44, a rotating mechanism 45, a first pneumatic finger 46, and a vision detector 47. The Y-axis conveying mechanism 41 is fixedly mounted on the worktable 2. The Y-axis conveying mechanism 41 drives the X-axis conveying mechanism 42 to move forward and backward. The X-axis conveying mechanism 42 drives the Z-axis conveying mechanism 43 to move left and right. The Z-axis conveying mechanism 43 drives the lifting platform 44 to move up and down. The rotating mechanism 45 is fixedly mounted on the lifting platform 44. The mechanism 45 drives the first pneumatic finger 46 to rotate. The vision detector 47 is fixedly installed on the outside of the lifting platform 44. The vision detector 47 provides visual detection for the first pneumatic finger 46. The robot arm 4 has three movement directions: X-axis, Y-axis and Z-axis. The first pneumatic finger 46 takes out the bent suture needle 8 one by one from the needle vibration plate 3 through visual detection. Then, it is turned by the rotating mechanism 45 and transported to the suture loading mechanism 7 for positioning. This can achieve the technical effect of automatic feeding of the bent suture needle 8 and speed up the operation efficiency of the equipment.

[0041] Furthermore, the thread wheel transverse movement mechanism 5, the Y-axis conveying mechanism 41, the X-axis conveying mechanism 42, and the Z-axis conveying mechanism 43 all adopt screw conveyors; they have the characteristics of high-precision conveying and realize the rapid assembly between the bent suture needle 8 and the suture thread 10.

[0042] Furthermore: A wire insertion unit 11 is provided on the side of the wire loading unit near the wire reel unit 6. The wire insertion unit 11 includes a positioning bracket 111, a lifting cylinder 112, a first telescopic cylinder 113, and a second pneumatic finger 114. The positioning bracket 111 is fixedly installed on the workbench 2, and the lifting cylinder 112 is fixedly installed on the side of the positioning bracket 111. The lifting cylinder 112 drives the first telescopic cylinder 113 to move up and down, and the first telescopic cylinder 113 drives the second pneumatic finger 114 to move left and right. Two pneumatic fingers 114 grip the suture 10 and insert it into the fine hole 9 of the curved suture needle 8 by moving it laterally through the first telescopic cylinder 113. When the suture 10 is inserted into the fine hole 9, the second pneumatic finger 114 of the insertion unit 11 grips the suture 10 and moves it to the right. The lifting cylinder 112 aligns the suture 10 with the fine hole 9, and then the first telescopic cylinder 113 drives the needle to be inserted into the fine hole 9. This achieves automated mechanical assembly with higher precision and avoids manual assembly, reducing bacterial contamination.

[0043] Furthermore: the thread wheel lateral movement mechanism 5 drives the thread wheel assembly 6 to move to the left and gradually pull out the sewing thread 10. A positioning and cutting mechanism 12 is fixedly installed on the worktable 2. The positioning and cutting mechanism 12 performs a cutting action after the sewing thread 10 is pulled out. According to the actual situation, the length of the sewing thread 10 can be rotated and cut off. After the sewing thread 10 is cut, it is immediately inserted into the fine hole 9 to avoid the situation where the sewing thread 10 is bent and cannot be aligned with the fine hole 9, thus speeding up the assembly efficiency.

[0044] Optional; Before cutting the suture 10, glue can be applied to the suture 10 first, and then cut after the glue has cured, so that the cut of the suture 10 is smoother and can be effectively inserted into the fine hole 9 for assembly, without misalignment.

[0045] Furthermore, the positioning and cutting mechanism 12 includes a rotating bracket 121, a rotating shaft 122, a servo motor 123, a thread-cutting head 124, and two thread-clamping heads 125. The rotating bracket 121 is fixedly mounted on the worktable 2, the rotating shaft 122 is rotatably mounted within the rotating bracket 121, and the servo motor 123 is fixedly mounted on the rotating bracket 121, driving the rotating shaft 122 to rotate. The thread-cutting head 124 and the two thread-clamping heads 125 are both fixedly mounted on the rotating shaft 122. One thread-clamping head 125 provides the thread-cutting head 124 with the positioning of the suture 10. The other thread-clamping head 125 is located on the left side of the thread assembly mechanism 7, and this thread-clamping head 125 aligns the suture 10 with the fine hole 9 of the curved suture needle 8. It can clamp the suture 10 before cutting, resulting in higher cutting accuracy. At the same time, it can clamp the suture 10 to achieve positioning on the left side of the fine hole 9, resulting in higher assembly accuracy.

[0046] Furthermore, the thread-cutting head 124 includes a first shaft frame 1241, a second telescopic cylinder 1242, a third pneumatic finger 1243, and two cutting blades 1244. The first shaft frame 1241 is fixedly mounted on the rotating shaft 122, and the second telescopic cylinder 1242 is fixedly mounted on the side of the first shaft frame 1241. The second telescopic cylinder 1242 drives the third pneumatic finger 1243 to move closer to or away from the suture 10. The third pneumatic finger 1243 drives the two cutting blades 1244 to move closer to or away from each other. When the two cutting blades 1244 move closer to each other, they cut the suture 10. By using the second telescopic cylinder 1242 to move the two cutting blades 1244 closer to or away from the conveying suture 10, the precise conveying and cutting of the suture 10 is achieved, resulting in higher production efficiency.

[0047] Furthermore, the suture clamping head 125 includes a second shaft frame 1251, a third telescopic cylinder 1252, a fourth pneumatic finger 1253, and two positioning grippers 1254. The second shaft frame 1251 is fixedly mounted on the rotating shaft 122, and the third telescopic cylinder 1252 is fixedly mounted on the side of the second shaft frame 1251. The third telescopic cylinder 1252 drives the fourth pneumatic finger 1253 to move closer to or away from the suture 10. The fourth pneumatic finger 1253 drives the two positioning grippers 1254 to move closer to or separate from each other. When the two positioning grippers 1254 move closer to each other, they clamp the suture 10. This enables positioning of the suture 10 during the conveying and cutting process with higher precision, facilitating automatic assembly into the fine hole 9.

[0048] Furthermore: A product storage slot 13 is fixedly installed on the workbench 2. The product storage slot 13 is located in front of the rotating bracket 121. A forward-inclined guide plate 14 is fixedly installed inside the rotating bracket 121. The guide plate 14 is located between the rotating shaft 122 and the product storage slot 13. When the suture 10 is inserted into the fine hole 9 of the bent suture needle 8 for fixing, and when the suture 10 is cut, the assembly production between the suture 10 and the bent suture needle 8 can be completed. After the product is produced, it can fall obliquely into the product storage slot 13 through the guide plate 14, realizing rapid production.

[0049] Furthermore, the thread reel unit 6 includes a thread frame 61, a main thread reel 62, a thread feeding tube 63, and several thread feeding pressure rollers 64. The thread reel lateral movement mechanism 5 drives the thread frame 61 to move left and right. The main thread reel 62 is rotated and installed on the upper side of the thread frame 61. The suture 10 is wound and installed on the main thread reel 62. Several thread feeding pressure rollers 64 are installed on the thread frame 61. After the suture 10 is pulled out from the main thread reel 62, it is fed into the thread feeding tube 63 through several thread feeding pressure rollers 64. The feeding of the suture 10 is more stable, and it can realize the batch assembly production of the suture 10 and the bent suture needle 8.

[0050] Furthermore: a pressure roller bracket 15 is fixedly installed on the wire frame 61. Two wire feeding pressure rollers 64 are provided. One wire feeding pressure roller 64 is fixedly installed in the pressure roller bracket 15, and the other wire feeding pressure roller 64 is slidably installed in the pressure roller bracket 15. A side plate 16 is fixedly installed on the rear side of the pressure roller bracket 15. A toggle handle 17 is damped and slidably installed on the side plate 16. The front end of the toggle handle 17 drives the feeding pressure roller to slide in the pressure roller bracket 15, so that the two wire feeding pressure rollers 64 are close to each other or separated from each other. The distance between the two wire feeding pressure rollers 64 can be controlled by using the toggle handle 17, thus making it suitable for sutures 10 of different diameters and achieving precise feeding of sutures 10.

[0051] Furthermore: at least two through holes 18 are formed on the side plate 16, and rubber damping rings 19 are fixedly installed in the through holes 18. At least two insert rods 20 are fixedly installed on the front side of the toggle handle 17. The insert rods 20 are respectively slidably installed in the through holes 18 through the rubber damping rings 19. The front end of the insert rods 20 drives the feed rollers 64 to move back and forth. The rubber damping rings 19 are used to increase the friction between the through holes 18 and the insert rods 20. After the toggle handle 17 is released, the toggle handle 17 can be automatically locked in the through holes 18 through the rubber damping rings 19, so as to fix the distance between the two feed rollers 64.

[0052] Furthermore, several guide rollers 21 are rotatably mounted on the wire frame 61. After the suture 10 is pulled out from the main wire roller 62, it is transported through the guide rollers 21 to the wire feeding roller 64 and the wire feeding tube 63, which can improve the stability of the suture 10 transportation.

[0053] This embodiment does not impose any limitation on the shape, material, structure, etc. of this utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of this utility model.

Claims

1. A needle threading machine suitable for suture needles, comprising a frame, on which a worktable is fixedly mounted, characterized in that: The workbench is fixedly equipped with a needle vibratory plate, a robotic arm, a thread wheel transverse movement mechanism, a thread wheel unit, and a thread loading mechanism. The needle vibrating plate contains multiple bent suture needles. The robotic arm picks up a single bent suture needle and transports it to the thread loading mechanism. One end of the bent suture needle has a small hole. The thread wheel assembly contains suture thread. The thread wheel transverse movement mechanism drives the thread wheel assembly to move left and right. When the thread wheel assembly moves to the rightmost extreme position, the suture thread is inserted into the small hole. The thread-loading mechanism flattens the fine hole of the bent suture needle, so that the suture thread is fixed in the fine hole.

2. The needle threading machine for suture needles according to claim 1, characterized in that: The robotic arm includes a Y-axis conveying mechanism, an X-axis conveying mechanism, a Z-axis conveying mechanism, a lifting platform, a rotating mechanism, a first pneumatic finger, and a vision detector. The Y-axis conveying mechanism is fixedly mounted on the worktable and drives the X-axis conveying mechanism to translate forward and backward. The X-axis conveying mechanism drives the Z-axis conveying mechanism to translate left and right. The Z-axis conveying mechanism drives the lifting platform to move up and down. The rotating mechanism is fixedly mounted on the lifting platform and drives the first pneumatic finger to rotate. The vision detector is fixedly mounted on the outside of the lifting platform and provides visual detection for the first pneumatic finger.

3. A needle threading machine suitable for suture needles according to any one of claims 1-2, characterized in that: The thread insertion unit is located on the side of the thread loading unit near the thread reel unit. The thread insertion unit includes a positioning bracket, a lifting cylinder, a first telescopic cylinder, and a second pneumatic finger. The positioning bracket is fixedly installed on the workbench, and the lifting cylinder is fixedly installed on the side of the positioning bracket. The lifting cylinder drives the first telescopic cylinder to move up and down, and the first telescopic cylinder drives the second pneumatic finger to move left and right. The second pneumatic finger picks up the suture thread and inserts it into the fine hole of the curved suture needle through the lateral movement of the first telescopic cylinder.

4. A needle threading machine suitable for suture needles according to any one of claims 1-2, characterized in that: The thread wheel lateral movement mechanism drives the thread wheel unit to move to the left and gradually pull out the sewing thread. A positioning and cutting mechanism is fixedly installed on the worktable. The positioning and cutting mechanism performs a cutting action after the sewing thread is pulled out.

5. A needle threading machine suitable for suture needles according to claim 4, characterized in that: The positioning and cutting mechanism includes a rotating bracket, a rotating shaft, a servo motor, a thread-cutting head, and two thread-clamping heads. The rotating bracket is fixedly installed on the worktable, and the rotating shaft is rotatably mounted in the rotating bracket. The servo motor is fixedly installed on the rotating bracket and drives the rotating shaft to rotate. The thread-cutting head and the two thread-clamping heads are all fixedly installed on the rotating shaft. One of the thread-clamping heads provides the thread-cutting positioning for the thread-cutting head, and the other thread-clamping head is located on the left side of the thread-loading mechanism, and this thread-clamping head aligns the thread with the fine hole of the curved sewing needle.

6. A needle threading machine suitable for suture needles according to claim 4, characterized in that: The thread-cutting head includes a first shaft frame, a second telescopic cylinder, a third pneumatic finger, and two cutting blades. The first shaft frame is fixedly mounted on the rotating shaft, and the second telescopic cylinder is fixedly mounted on the side of the first shaft frame. The second telescopic cylinder drives the third pneumatic finger to move closer to or away from the suture line. The third pneumatic finger drives the two cutting blades to move closer to or separate from each other. When the two cutting blades move closer to each other, the suture line is cut.

7. A needle threading machine suitable for suture needles according to claim 4, characterized in that: The suture clamping head includes a second shaft frame, a third telescopic cylinder, a fourth pneumatic finger, and two positioning jaws. The second shaft frame is fixedly mounted on the rotating shaft, and the third telescopic cylinder is fixedly mounted on the side of the second shaft frame. The third telescopic cylinder drives the fourth pneumatic finger to move closer to or away from the suture. The fourth pneumatic finger drives the two positioning jaws to move closer to or separate from each other. When the two positioning jaws move closer to each other, they clamp the suture.

8. A needle threading machine suitable for suture needles according to claim 7, characterized in that: A product storage slot is fixedly installed on the workbench. The product storage slot is located in front of the rotating bracket. A forward-tilting guide plate is fixedly installed inside the rotating bracket. The guide plate is located between the rotating shaft and the product storage slot.

9. A needle threading machine suitable for suture needles according to any one of claims 1-2, characterized in that: The thread reel unit includes a thread frame, a main thread reel, a feed tube, and several feed pressure rollers. The thread reel lateral movement mechanism drives the thread frame to move left and right. The main thread reel is rotated and installed on the upper side of the thread frame. The sewing thread is wound and installed on the main thread reel. Several feed pressure rollers are installed on the thread frame, and the sewing thread is pulled out from the main thread reel and then fed into the feed tube through several feed pressure rollers.

10. A needle threading machine suitable for suture needles according to claim 9, characterized in that: A pressure roller bracket is fixedly installed on the wire frame. There are two wire feeding pressure rollers. One wire feeding pressure roller is fixedly installed in the pressure roller bracket, and the other wire feeding pressure roller is slidably installed in the pressure roller bracket. A side plate is fixedly installed on the rear side of the pressure roller bracket. A toggle handle is installed on the side plate with damping and sliding fit. The front end of the toggle handle drives the wire feeding pressure roller to slide in the pressure roller bracket, so that the two wire feeding pressure rollers are close to each other or separate from each other.

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