Insulin needle dispensing mechanism and dispensing method

Abstract

This invention relates to the field of medical device manufacturing technology and discloses an insulin needle dispensing mechanism and method. The insulin needle dispensing mechanism includes: a placement structure for carrying the needle tube and needle tip, and intermittently moving along a preset delivery direction; a positioning structure including a first positioning drive unit, a second positioning drive unit, and a positioning unit, wherein the first positioning drive unit drives the positioning unit to move normally along the delivery direction, and the second positioning drive unit drives the positioning unit to move vertically, so that the positioning unit presses the needle tube onto the placement structure from the top; and a needle feeding structure including a first needle feeding unit, a second needle feeding unit, and a needle clamping unit, wherein the needle clamping unit is used to clamp the needle tip. This invention achieves high-precision positioning, stable needle feeding, flexible dispensing, high integration and automation, minimal needle tip damage, higher product qualification rate, and better connection reliability.

Description

Technical Field

[0001] This invention relates to the field of medical device manufacturing technology, specifically to an insulin needle dispensing mechanism and dispensing method. Background Technology

[0002] Insulin injection needles, as a convenient and precise drug delivery device, have been widely used in the daily treatment of diabetic patients. Insulin injection needles are usually composed of needle core, needle core holder, needle tip assembly and dose adjustment mechanism. The reliable connection between the needle tip assembly and the needle core holder (or syringe) is the key to ensuring injection safety and drug solution sealing.

[0003] The assembly process of insulin needles and syringe barrels mainly relies on manual operation or semi-automated equipment. The needles are usually installed by screwing or snap-fitting. After assembly, sealant needs to be applied to the joints to prevent drug leakage and ensure connection strength.

[0004] Currently, the assembly of insulin needle tubes and needle tips mostly adopts a single-axis or simple moving push structure, which makes it difficult to achieve precise assembly of the needle tip and needle tube. This results in significant impact between the needle tip and needle tube, which can easily cause needle tip damage, affecting the product qualification rate and the reliability of product connection. In addition, the automation integration of the equipment is low. Summary of the Invention

[0005] This invention provides an insulin needle dispensing mechanism that uses a needle feeding structure to assemble the needle tip into the syringe barrel via a two-stage needle feeding process. This not only ensures efficient needle feeding but also ensures that the needle tip is precisely positioned within the syringe barrel, preventing significant impact between the needle tip and the syringe barrel. This improves the product qualification rate and the reliability of product connections, solving the problems of low product qualification rate, poor connection reliability, and low automation integration mentioned in the background art.

[0006] This invention provides the following technical solution: An insulin needle dispensing mechanism includes: a placement structure for carrying a syringe barrel and a needle tip, and intermittently moving along a preset delivery direction; a positioning structure including a first positioning drive unit, a second positioning drive unit, and a positioning unit, wherein the first positioning drive unit drives the positioning unit to move along the normal direction of the delivery direction, and the second positioning drive unit drives the positioning unit to move along the vertical direction, so that the positioning unit presses the syringe barrel onto the placement structure from the top; a needle feeding structure including a first needle feeding unit, a second needle feeding unit, and a needle clamping unit, wherein the needle clamping unit is used to clamp the needle tip, the first needle feeding unit is used to drive the needle clamping unit to move the needle tip to a first preset position along the vertical direction, and the second needle feeding unit is used to drive the needle clamping unit to move the needle tip to a second preset position, wherein the needle tip is located at a specified assembly depth within the syringe barrel when it is at the second preset position; and a dispensing structure including a dual-axis moving unit and an angle adjusting unit, wherein the dual-axis moving unit drives the angle adjusting unit to move along the delivery direction and the normal direction, and the angle adjusting unit is used to adjust the tilt angle of the dispensing, so that the dispensing point is aligned with the connection between the syringe barrel and the needle tip.

[0007] As a preferred embodiment of the present invention, the placement structure includes a conveying platform, a placement platform, and a limiting groove. The placement platform is mounted on the conveying platform, and a plurality of limiting grooves are provided on the placement platform. The limiting grooves match the outer contour of the syringe tube, and the plurality of limiting grooves are arranged at equal intervals along the conveying direction. The conveying platform moves along the conveying direction.

[0008] As a preferred embodiment of the present invention, positioning protrusions are provided on both sides of each limiting groove on the placement platform. The positioning protrusions cooperate with the flat positioning surface of the outer wall of the syringe tube to prevent the syringe tube from rotating circumferentially within the limiting groove.

[0009] As a preferred embodiment of the present invention, the first positioning drive unit includes a fixed base, on which a push cylinder is mounted, and a push plate is mounted on the moving end of the push cylinder, driving the push plate to move along the normal direction of the conveying direction; the second positioning drive unit includes a pressing cylinder, which is mounted on the push plate, and a lifting plate is mounted on the moving end of the pressing cylinder, driving the lifting plate to move along the vertical direction.

[0010] As a preferred embodiment of the present invention, the positioning part includes a connecting platform and multiple sets of pressure plates. The connecting platform is mounted on the lifting plate, and the pressure plates are mounted on the connecting platform. The adjacent pressure plates are matched with the syringe barrel to fix the syringe barrel in the limiting groove.

[0011] In a preferred embodiment of the present invention, the first needle feeding part includes a bracket, on which a limiting guide rail is mounted. A placement cylinder is provided on the limiting guide rail. The moving end of the placement cylinder is fixedly connected to the limiting guide rail, and the fixed end of the placement cylinder is slidably connected to the limiting guide rail, for moving the needle tip to a first preset position. The second needle feeding part includes a moving plate, which is mounted on the placement cylinder. A first servo motor is mounted on the moving plate, and a first lead screw is rotatably connected to the moving plate. The first lead screw is connected to the output end of the first servo motor. A first slide block is slidably connected to the moving plate, and the first slide block is threadedly connected to the first lead screw, for moving the needle tip to a second preset position.

[0012] As a preferred embodiment of the present invention, the needle clamping part includes a clamping cylinder, which is mounted on a first slide. The output end of the clamping cylinder is symmetrically equipped with a positioning plate, and the bottom end of the positioning plate is equipped with a clamping block. The clamping cylinder is used to drive the two positioning plates to move relative to each other or towards each other. A first fastening strip and a second fastening strip are respectively installed on the side of the clamping blocks that are close to each other. The second fastening strip has a plurality of needle clamping holes, which are arranged at equal intervals along the conveying direction.

[0013] As a preferred embodiment of the present invention, the dual-axis moving part includes a mounting frame, on which a second servo motor is mounted, and a second lead screw is rotatably connected to the mounting frame. The second lead screw is connected to the output end of the second servo motor. A second slide block is slidably connected to the mounting frame, and the second slide block is threadedly connected to the second lead screw. A translation cylinder is mounted on the second slide block, and a translation stage is mounted on the moving end of the translation cylinder.

[0014] As a preferred embodiment of the present invention, the angle adjustment part includes an angle adjustment component, which is mounted on a translation stage. A dispensing head is mounted on the rotating end of the angle adjustment component, and the angle adjustment component is used to adjust the angle of the dispensing head in the vertical direction.

[0015] A method for applying adhesive to insulin needles includes the following steps: Step 1: Place the syringe cartridge at the designated location on the equipment using a mechanical gripper; Step 2: The device drives the syringe to move intermittently in the specified direction; Step 3: When the drive syringe barrel stops moving, the device moves the needle tip to the specified assembly depth of the syringe barrel; Step 4: The syringe is then moved to the dispensing position of the equipment, and the equipment simultaneously fixes the syringe in place. Step 5: Finally, the equipment applies adhesive to the connection between the syringe barrel and the needle tip.

[0016] Compared with the prior art, the present invention provides an insulin needle dispensing mechanism and dispensing method, which has the following beneficial effects: 1. In this insulin needle dispensing mechanism, the placement and positioning structures ensure the stability of the needle during dispensing, preventing the needle from rotating or slipping, facilitating the subsequent assembly of the needle parts and the syringe barrel, improving the assembly accuracy of the needle and the sealing of the finished product.

[0017] 2. In this insulin needle dispensing mechanism, the needle feeding structure allows for the assembly of the needle tip with the syringe barrel in a two-stage feeding manner. This ensures that the needle tip is precisely assembled to the specified depth of the syringe barrel, preventing significant impact between the needle tip and the syringe barrel, thus avoiding damage to the needle tip, improving the product qualification rate, and enhancing the reliability of the product connection.

[0018] 2. The insulin needle dispensing mechanism integrates the placement structure, positioning structure, needle delivery structure, and dispensing structure, eliminating the need for multiple manual interventions or transfers, thus improving production efficiency. At the same time, it ensures product cleanliness, meeting the stringent requirements of medical devices for cleanliness and traceability, and achieving a higher degree of automation integration.

[0019] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This invention can achieve high-precision positioning, stable needle feeding, flexible dispensing, high integration and high degree of automation, less needle tip damage, higher product qualification rate, and better connection reliability. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

[0021] Figure 1 This is a first-view perspective stereoscopic diagram of the present invention; Figure 2 This is a second-view perspective stereoscopic diagram of the present invention; Figure 3 This is a three-dimensional schematic diagram of the placement structure and positioning structure in this invention; Figure 4 This is a three-dimensional schematic diagram of the needle feeding structure in this invention; Figure 5 This is a three-dimensional schematic diagram of the dispensing structure in this invention; Figure 6 This is a partial three-dimensional schematic diagram of the needle feeding structure in this invention; Figure 7 This is a three-dimensional schematic diagram of the positioning plate and clamping block in this invention.

[0022] In the diagram: 100, placement structure; 101, conveyor table; 102, placement table; 103, limiting groove; 104, syringe barrel; 105, needle tip; 200. Positioning structure; 201. Fixed base; 202. Pushing cylinder; 203. Pushing plate; 204. Pressing cylinder; 205. Lifting plate; 206. Connecting platform; 207. Pressure plate; 300. Needle feeding structure; 301. Support; 302. Limiting guide rail; 303. Placement cylinder; 304. Moving plate; 305. First servo motor; 306. First lead screw; 307. First slide; 308. Clamping cylinder; 309. Positioning plate; 310. Clamping block; 311. First fastening bar; 312. Second fastening bar; 313. Needle clamping hole; 400. Dispensing structure; 401. Mounting bracket; 402. Second servo motor; 403. Second lead screw; 404. Second slide; 405. Translation cylinder; 406. Translation stage; 407. Angle adjustment component; 408. Dispensing head; 409. Cable chain. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Example 1: Reference Figures 1-7 An insulin needle dispensing mechanism, wherein the dispensing mechanism is integrally mounted on a worktable having a conveying device, comprising: The placement structure 100 is used to carry the syringe barrel 104 and the needle tip 105, and moves intermittently along a preset conveying direction, such as conveying from the previous process to the dispensing process, and then from the dispensing process to the next process. The conveying device adopts step-by-step cycle control. When the syringe barrel 104 is conveyed to a specific station, the movement is paused to facilitate the transfer or dispensing of the needle tip 105. After the operation is completed, it continues to be conveyed to the next station. It can provide a stable and refined state at each work station, and provide the necessary positioning basis for high-precision assembly and dispensing processes.

[0025] The positioning structure 200 includes a first positioning drive unit, a second positioning drive unit, and a positioning unit. The first positioning drive unit drives the positioning unit to move along the normal direction of the conveying direction, and the second positioning drive unit drives the positioning unit to move along the vertical direction, so that the positioning unit presses the syringe 104 onto the placement structure 100 from the top. The positioning structure 200 is installed as a whole on a fixed position of the workbench. When the product is conveyed to the positioning structure 200, the conveying stops, so that the syringe 104 can be fixedly connected to the placement structure 100 through the positioning structure 200, avoiding displacement or rotation during assembly or dispensing, and improving the product qualification rate.

[0026] The needle feeding structure 300 includes a first needle feeding part, a second needle feeding part, and a needle clamping part. The needle clamping part is used to clamp the needle tip 105. The first needle feeding part is used to drive the needle clamping part to move the needle tip 105 to a first preset position in the vertical direction. The second needle feeding part is used to drive the needle clamping part to move the needle tip 105 to a second preset position in the vertical direction. When the needle tip 105 is in the second preset position, it is located at a specified assembly depth inside the needle tube 104. The first and second needle feeding parts realize the two-stage needle feeding of the needle tip 105. The first preset position is above the needle tube 104. The first needle feeding part is used to quickly feed the needle tip 105 to the top of the needle tube 104 to ensure the efficiency of needle feeding. The second needle feeding part is used to slowly feed the needle tip 105 to a precise assembly depth (usually 3mm-4mm) inside the needle tube 104 to ensure the accuracy of needle feeding. During the needle feeding process, the needle clamping part ensures the stability of the needle tip 105.

[0027] The dispensing structure 400 includes a dual-axis moving part and an angle adjusting part. The dual-axis moving part drives the angle adjusting part to move along the conveying direction and the normal direction. The angle adjusting part is used to adjust the tilt angle of the dispensing so that the dispensing point is aligned with the connection between the syringe barrel 104 and the needle tip 105.

[0028] Reference Figure 3 The placement structure 100 includes a conveying platform 101, a placement platform 102, and a limiting groove 103. The placement platform 102 is mounted on the conveying platform 101. Multiple limiting grooves 103 are provided on the placement platform 102. The limiting grooves 103 match the outer contour of the syringe barrel 104. The multiple limiting grooves 103 are arranged at equal intervals along the conveying direction. The conveying platform 101 moves along the conveying direction. Positioning protrusions are provided on both sides of each limiting groove 103 on the placement platform 102. The positioning protrusions cooperate with the flat positioning surface of the outer wall of the syringe barrel 104 to prevent the syringe barrel 104 from rotating circumferentially within the limiting groove 103.

[0029] The conveyor table 101 serves as the basic platform for conveying. It can typically employ a motor-driven belt conveyor system or a linear motor drive system to ensure conveying accuracy and precise cycle control. The placement table 102 forms a carrier structure for the platform-shaped syringe 104 that can move synchronously with the conveyor table 101. The geometry of the limiting groove 103 precisely matches the outer contour of the syringe 104. It is typically designed as an arc-shaped groove or a semi-circular groove that adapts to the cylindrical outer surface of the syringe 104, allowing the syringe 104 to be stably embedded in it in a specific posture. The equidistant arrangement is coordinated with the intermittent conveying rhythm of the equipment to ensure that each syringe 104 can accurately stop at the work station. The setting of the spacing needs to take into account factors such as assembly operation time, glue curing time, and the working radius of the robot to achieve optimized matching of production rhythm. The positioning protrusions cooperate with the flat positioning surface of the outer wall of the syringe 104 to form an anti-rotation positioning mechanism. When the syringe 104 is placed in the limiting groove 103, the positioning protrusions on both sides are just engaged with the two sides of the flat positioning surface, forming a mechanical interference constraint, which can restrict the degree of freedom of the syringe 104 in the circumferential direction, effectively preventing the syringe 104 from rotating or deflecting in the circumferential direction in the limiting groove 103, ensuring that the assembly interface of the syringe 104 always maintains a vertical orientation angle, and providing the necessary posture reference for the precise insertion of the subsequent needle tip 105.

[0030] Reference Figure 3 The first positioning drive unit includes a fixed base 201, on which a push cylinder 202 is mounted. A push plate 203 is mounted on the moving end of the push cylinder 202, driving the push plate 203 to move along the normal direction of the conveying direction. The second positioning drive unit includes a pressing cylinder 204, which is mounted on the push plate 203. A lifting plate 205 is mounted on the moving end of the pressing cylinder 204, driving the lifting plate 205 to move along the vertical direction. The positioning unit includes a connecting platform 206 and multiple sets of pressure plates 207. The connecting platform 206 is mounted on the lifting plate 205, and the pressure plates 207 are mounted on the connecting platform 206. Adjacent pressure plates 207 are matched with the syringe barrel 104 to fix the syringe barrel 104 in the limiting groove 103.

[0031] The fixed base 201 is fixed to the workbench as a support base. The piston rod of the push cylinder 202 extends and retracts along the normal direction. When compressed gas is introduced into the push cylinder 202, the piston rod extends and pushes the push plate 203 to approach the placement table 102 along the normal direction. When it retracts, it drives the push plate 203 away from the placement table 102. It can make way or approach according to the position of the syringe 104 to avoid interference with the delivery process. At the same time, it can quickly enter the working position during operation. When the clamping cylinder 204 is activated, it drives the lifting plate 205 to move up and down in the vertical direction, so that the positioning part can press the syringe 104 from above and below. The vertical downward pressure is used to firmly restrict the syringe 104 in the limiting groove 103, eliminating the vertical degree of freedom. When the lifting plate 205 descends, the pressure plate 207 presses against the side surface of the syringe barrel 104 from above, using mechanical pressure to fix the syringe barrel 104 in the limiting groove 103. The arrangement of multiple pressure plates 207 allows multiple syringe barrels 104 to be fixed simultaneously in one positioning action, improving work efficiency. The contact surface between the pressure plate 207 and the syringe barrel 104 can be designed as an arc-shaped surface or a flat surface that adapts to the outer surface of the syringe barrel 104 to increase the contact area, disperse the clamping force, and avoid damage to the surface of the syringe barrel 104.

[0032] Reference Figure 4 The first needle feeding section includes a bracket 301, on which a limiting guide rail 302 is mounted. The limiting guide rail 302 is equipped with a placement cylinder 303. The moving end of the placement cylinder 303 is fixedly connected to the limiting guide rail 302, and the fixed end of the placement cylinder 303 is slidably connected to the limiting guide rail 302, for moving the needle tip 105 to a first preset position. The second needle feeding section includes a moving plate 304, which is mounted on the placement cylinder 303. A first servo motor 305 is mounted on the moving plate 304. A first lead screw 306 is rotatably connected to the moving plate 304. The first lead screw 306 is connected to the output end of the first servo motor 305. A first slide block 307 is slidably connected to the moving plate 304. The first slide block 307 is threadedly connected to the first lead screw 306, for moving the needle tip 105 to a second preset position.

[0033] The limiting guide rail 302 provides precise vertical guidance, which allows the extension and retraction of the placement cylinder 303 itself to be converted into its overall up and down sliding along the limiting guide rail 302. When the placement cylinder 303 is activated, the piston rod extends and retracts, pushing itself to move up and down along the limiting guide rail 302, thereby driving the needle clamping part and needle tip 105 mounted on it to move in the vertical direction, achieving coarse positioning in the height direction, and lowering the needle tip 105 to a height position close to that of the needle tube 104. The first servo motor 305 provides precise height control power, drives the first lead screw 306 to rotate, and drives the first slide 307 to move in the vertical direction. Therefore, the needle clamping part can move along the conveying direction with the first slide 307, and move the needle tip 105 above the needle tube 104. By controlling the first servo motor 305, the depth of the needle tip 105 inserted into the needle tube 104 is precisely controlled to ensure that the specified assembly depth is reached.

[0034] Reference Figures 6-7The needle clamping part includes a clamping cylinder 308, which is mounted on the first slide 307. The output end of the clamping cylinder 308 is symmetrically mounted with positioning plates 309. The bottom end of the positioning plates 309 is mounted with clamping blocks 310. The clamping cylinder 308 is used to drive the two positioning plates 309 to move relative to each other or towards each other. The clamping blocks 310 are respectively mounted with a first fastening strip 311 and a second fastening strip 312 on the side that are close to each other. The second fastening strip 312 is provided with a plurality of needle clamping holes 313, which are arranged at equal intervals along the conveying direction.

[0035] The clamping cylinder 308 adopts a double-acting cylinder or symmetrical gripper structure. When the clamping cylinder 308 is activated, it drives the two positioning plates 309 to move relative to or towards each other, thereby achieving clamping or releasing action. The first fastening strip 311 is made of elastic material or surface-coated with soft material, while the second fastening strip 312 is made of hard material to increase friction and protect the surface of the needle tip 105. The needle clamping holes 313 are arranged at equal intervals along the conveying direction, and the hole diameter matches the outer diameter of the needle seat of the needle tip 105. When the two positioning plates 309 move toward each other, the first fastening strip 311 and the second fastening strip 312 clamp the needle head 105 from both sides. The needle seat part of the needle head 105 is embedded in the needle clamping hole 313, forming multi-point contact and hole-shaft fit constraint, ensuring that the needle head 105 maintains a stable posture during the transfer process and does not tilt or fall off. Moreover, the multiple needle clamping holes 313 allow the needle clamping part to clamp multiple needle heads 105 at the same time, realizing multi-station parallel operation and improving assembly efficiency.

[0036] Reference Figure 5 The dual-axis moving part includes a mounting bracket 401, on which a second servo motor 402 is mounted. A second lead screw 403 is rotatably connected to the mounting bracket 401 and is connected to the output end of the second servo motor 402. A second slide block 404 is slidably connected to the mounting bracket 401 and is threadedly connected to the second lead screw 403. A translation cylinder 405 is mounted on the second slide block 404, and a translation stage 406 is mounted on the moving end of the translation cylinder 405 for angle adjustment. The component includes an angle adjustment component 407, which is mounted on a translation table 406. A dispensing head 408 is mounted on the rotating end of the angle adjustment component 407. The angle adjustment component 407 is used to adjust the angle of the dispensing head 408 in the vertical direction. A drag chain 409 is installed between the mounting bracket 401 and the second slide block 404 to protect cables, air pipes, and other pipelines that move with the moving parts in the equipment, preventing them from getting tangled, worn, or pulled during equipment operation, thereby extending the service life of the cables and pipelines.

[0037] The second servo motor 402 and the second lead screw 403 form a ball screw transmission mechanism. When the second servo motor 402 rotates, it drives the second lead screw 403 to rotate, thereby driving the second slide 404 to move precisely along the conveying direction, realizing the adjustment of the dispensing position in the conveying direction. The dispensing head 408 is driven to move along the normal direction of the conveying direction by the translation cylinder 405, so that the translation table 406 can be freely positioned in both the conveying direction and the normal direction in the horizontal plane. This allows the dispensing head 408 to quickly align with the connection between the syringe barrel 104 and the needle tip 105 at different positions, adapting to the needs of multi-station parallel dispensing. The angle adjustment component 407 can be a rotary cylinder, a servo rotary table, or a stepper motor driven angle adjustment mechanism, which can adjust the angle of the dispensing head 408 in the vertical direction, that is, adjust the tilt angle of the dispensing head 408 relative to the horizontal plane, so that the dispensing head 408 can be aligned with the connection between the syringe barrel 104 and the needle part 105 at the optimal angle, adapting to the tilt angle changes of the connection of different product specifications, ensuring that the glue can be accurately injected into the connection gap, and avoiding glue overflow or insufficient coating. The dispensing head 408 usually includes components such as glue valve, syringe, and nozzle, and the glue is precisely extruded by air pressure or screw drive.

[0038] Example 2: Similar to Example 1, a dispensing method for insulin needles is proposed based on Example 1, including the following steps: Step 1: Place the syringe 104 in the designated position on the equipment using a mechanical gripper; Mechanical grippers typically employ pneumatic or electric grippers to pick up syringe barrels 104 from a feeding vibratory feeder or hopper and precisely place them in the limiting groove 103 of the placement table 102, aligning the flat positioning surface of the syringe barrel 104 with the positioning protrusion, ensuring that the syringe barrel 104 enters the production line in the correct posture.

[0039] Step 2: The device drives the syringe 104 to move intermittently in the specified direction; The conveyor 101 moves forward at a preset pace (usually 0.1s-0.5s) and sequentially moves the placement table 102 containing the syringe tube 104 to the work station, where it pauses for a preset time (usually 0.1s-0.2s) to allow the operation to proceed.

[0040] Step 3: When the drive syringe barrel 104 stops moving, the device moves the needle tip 105 to the specified assembly depth of the syringe barrel 104; The placement cylinder 303 drives the needle tip 105 to descend above the needle tube 104. Then, the first servo motor 305 drives the first lead screw 306 to rotate, causing the first slide block 307 and the needle clamping part to descend to the second preset position, inserting the needle tip 105 into the needle tube 104 at a precise depth, thus completing the mechanical connection between the needle tip 105 and the needle tube 104.

[0041] Step 4: Then the syringe 104 is moved to the dispensing position of the equipment, and at the same time, the equipment fixes the syringe 104. The syringe 104 continues to be intermittently conveyed to the dispensing station along the placement table 102. The push cylinder 202 pushes the push plate 203 to move along the normal direction, so that the pressure plate 207 moves above the syringe 104. Then, the clamping cylinder 204 drives the lifting plate 205 to descend, and the pressure plate 207 presses the syringe 104 into the limiting groove 103 from the top to prevent the syringe 104 from shifting or vibrating during the dispensing process.

[0042] Step 5: Finally, the equipment applies adhesive to the connection between the syringe barrel 104 and the needle tip 105.

[0043] The second servo motor 402 drives the second slide 404 to move, and the translation cylinder 405 drives the translation stage 406 to move, so that the dispensing head 408 is aligned with the connection. The angle adjustment component 407 adjusts the tilt angle of the dispensing head 408 to the optimal dispensing posture. Then, the dispensing head 408 accurately applies the adhesive to the connection to complete the sealing and fixing. After the dispensing is completed, the positioning structure 200 is released, and the conveyor table 101 continues to convey the assembled product to the next process.

[0044] Components not described in detail in this article are existing technologies.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An insulin needle dispensing mechanism, characterized in that, include: The placement structure (100) is used to carry the syringe barrel (104) and the needle tip (105) and move intermittently along a preset delivery direction; The positioning structure (200) includes a first positioning drive unit, a second positioning drive unit, and a positioning unit. The first positioning drive unit drives the positioning unit to move along the normal direction of the conveying direction, and the second positioning drive unit drives the positioning unit to move along the vertical direction, so that the positioning unit presses the syringe (104) onto the placement structure (100) from the top. The needle feeding structure (300) includes a first needle feeding part, a second needle feeding part, and a needle clamping part. The needle clamping part is used to clamp the needle tip (105). The first needle feeding part is used to drive the needle clamping part to move the needle tip (105) to a first preset position in the vertical direction. The second needle feeding part is used to drive the needle clamping part to move the needle tip (105) to a second preset position in the vertical direction. When the needle tip (105) is located in the second preset position, it is located at a specified assembly depth in the needle tube (104). The dispensing structure (400) includes a dual-axis moving part and an angle adjusting part. The dual-axis moving part drives the angle adjusting part to move along the conveying direction and the normal direction. The angle adjusting part is used to adjust the tilt angle of the dispensing so that the dispensing point is aligned with the connection between the syringe barrel (104) and the needle tip (105).

2. The insulin needle dispensing mechanism according to claim 1, characterized in that, The placement structure (100) includes a conveying platform (101), a placement platform (102), and a limiting groove (103). The placement platform (102) is installed on the conveying platform (101). The placement platform (102) has multiple limiting grooves (103). The limiting grooves (103) match the outer contour of the syringe tube (104). The multiple limiting grooves (103) are arranged at equal intervals along the conveying direction. The conveying platform (101) moves along the conveying direction.

3. The insulin needle dispensing mechanism according to claim 2, characterized in that, The placement platform (102) is provided with positioning protrusions on both sides of each limiting groove (103). The positioning protrusions cooperate with the flat positioning surface of the outer wall of the syringe (104) to prevent the syringe (104) from rotating circumferentially in the limiting groove (103).

4. The insulin needle dispensing mechanism according to claim 2, characterized in that, The first positioning drive unit includes a fixed base (201), on which a push cylinder (202) is mounted. A push plate (203) is mounted on the moving end of the push cylinder (202), driving the push plate (203) to move along the normal direction of the conveying direction. The second positioning drive unit includes a clamping cylinder (204), which is mounted on a push plate (203). The moving end of the clamping cylinder (204) is equipped with a lifting plate (205), which drives the lifting plate (205) to move in the vertical direction.

5. The insulin needle dispensing mechanism according to claim 4, characterized in that, The positioning part includes a connecting platform (206) and multiple sets of pressure plates (207). The connecting platform (206) is installed on the lifting plate (205), and the pressure plates (207) are installed on the connecting platform (206). The adjacent pressure plates (207) are matched with the syringe barrel (104) to fix the syringe barrel (104) in the limiting groove (103).

6. The insulin needle dispensing mechanism according to claim 1, characterized in that, The first needle feeding part includes a bracket (301), a limiting guide rail (302) is installed on the bracket (301), the limiting guide rail (302) is provided with a placement cylinder (303), the moving end of the placement cylinder (303) is fixedly connected to the limiting guide rail (302), and the fixed end of the placement cylinder (303) is slidably connected to the limiting guide rail (302) for moving the needle part (105) to a first preset position; The second needle feeding section includes a movable plate (304), which is mounted on a placement cylinder (303). A first servo motor (305) is mounted on the movable plate (304), and a first lead screw (306) is rotatably connected to the movable plate (304). The first lead screw (306) is connected to the output end of the first servo motor (305). A first slide block (307) is slidably connected to the movable plate (304), and the first slide block (307) is threadedly connected to the first lead screw (306) for moving the needle tip (105) to a second preset position.

7. The insulin needle dispensing mechanism according to claim 6, characterized in that, The clamping needle part includes a clamping cylinder (308), which is mounted on a first slide (307). Positioning plates (309) are symmetrically mounted on the output end of the clamping cylinder (308), and a clamping block (310) is mounted on the bottom end of the positioning plate (309). The clamping cylinder (308) is used to drive the two positioning plates (309) to move relative to or towards each other. Among them, the clamping blocks (310) are respectively equipped with a first fastening strip (311) and a second fastening strip (312) on the side that are close to each other. The second fastening strip (312) is provided with a plurality of needle clamping holes (313), and the needle clamping holes (313) are arranged at equal intervals along the conveying direction.

8. The insulin needle dispensing mechanism according to claim 1, characterized in that, The dual-axis moving part includes a mounting frame (401), on which a second servo motor (402) is mounted. A second lead screw (403) is rotatably connected to the mounting frame (401). The second lead screw (403) is connected to the output end of the second servo motor (402). A second slide block (404) is slidably connected to the mounting frame (401). The second slide block (404) is threadedly connected to the second lead screw (403). A translation cylinder (405) is mounted on the second slide block (404). A translation stage (406) is mounted on the moving end of the translation cylinder (405).

9. The insulin needle dispensing mechanism according to claim 8, characterized in that, The angle adjustment unit includes an angle adjustment component (407), which is mounted on a translation stage (406). A dispensing head (408) is mounted on the rotating end of the angle adjustment component (407), and the angle adjustment component (407) is used to adjust the angle of the dispensing head (408) in the vertical direction.

10. A method for dispensing adhesive onto an insulin needle, employing an insulin needle dispensing mechanism as described in any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Place the syringe (104) at the designated location on the equipment using a mechanical gripper; Step 2: The device drives the syringe (104) to move intermittently in the specified direction; Step 3: When the drive syringe barrel (104) stops moving, the device moves the needle tip (105) to the specified assembly depth of the syringe barrel (104); Step 4: Then the syringe (104) is moved to the dispensing position of the equipment, and at the same time, the equipment fixes the syringe (104); Step 5: Finally, the equipment applies adhesive to the connection between the syringe barrel (104) and the needle tip (105).

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