Injection sealing device and control method thereof

Abstract

The embodiment of the invention provides an injection sealing device and a control method thereof.The injection sealing device comprises a rotary disc assembly, a first feeding assembly and a second feeding assembly, and the rotary disc assembly is rotatably arranged and provided with a plurality of feeding stations; the first feeding assembly is arranged on one side of the rotary disc assembly and used for conveying the pre-filling needle tubes to the feeding station. The second feeding assembly and the first feeding assembly are arranged in a spaced mode in the circumferential direction of the rotary disc assembly. The second feeding assembly is provided with a feeding part and a transferring part, and the feeding part is used for conveying the sealing pieces. And the transfer part is used for transferring the sealing element and sealing the sealing element on the pre-filling needle tube. After the pre-filling needle tube is conveyed to the feeding station, the rotating disc assembly rotates the pre-filling needle tube to the second feeding assembly, the transferring part transfers the sealing element and seals the sealing element on the pre-filling needle tube in a covering mode, feeding, positioning and pressurizing operation of the sealing element is completed on a single device, the operation space is saved, the equipment complexity and the manufacturing cost are reduced, and the production efficiency is improved. And the later maintenance difficulty and energy consumption are reduced.

Description

Technical Field

[0001] This invention relates to the field of pharmaceutical packaging machinery technology, and in particular to a sealing device for injections and its control method. Background Technology

[0002] Prefilled syringes, also known as prefilled injectable solutions, are a new and practical form of drug packaging that has been quietly emerging in recent years. They involve aseptically filling the drug solution directly into a glass syringe with an attached needle, combining the syringe and the drug solution packaging container into one unit. This eliminates the need for repeated aspiration and needle installation during use, offering advantages such as ease of use, accurate dosage, and reduced contamination. Compared to using ampoules, they save half the time, thus gaining valuable time for frontline clinical rescue of critically ill patients.

[0003] In existing technologies, pre-filled needles are sealed with pre-filled needle seals to ensure product sealing and prevent leakage, contamination, or deterioration of the medication. However, the current pre-filled needle seal assembly process typically involves initial material loading and positioning of the seal in a single device, followed by transfer via a conveyor line to another device for pressurization or tightening. While this design ensures a certain success rate and reliability in the pressing process, it has significant drawbacks: the linear conveyor structure itself occupies a large amount of floor space, and the multi-device design requires more operating areas, resulting in a large overall equipment size and a less compact structure, putting pressure on the space utilization of the cleanroom; furthermore, multiple devices mean the need for multiple actuators, sensors, and control systems, which not only increases equipment complexity and manufacturing costs but also raises the difficulty of later maintenance and energy consumption. Summary of the Invention

[0004] This invention provides a sealing device and control method for injectable drugs, aiming to improve the problems of space waste and high cost caused by multiple devices completing the feeding and capping work.

[0005] Specifically, the present invention provides a sealing device for an injectable preparation, including a turntable assembly, a first feeding assembly and a second feeding assembly. The turntable assembly is rotatably configured and has a plurality of feeding stations spaced apart along its circumference. The first feeding assembly and the second feeding assembly are arranged around the turntable assembly.

[0006] The first feeding assembly is used to convey the pre-filled syringe to the feeding station;

[0007] The second feeding assembly has a feeding section and a transfer section. The feeding section is used to transport the sealing element. The transfer section is located at one end of the feeding section near the feeding station and is used to transfer the sealing element and seal it on the pre-filled needle tube.

[0008] Optionally, the first feeding assembly includes a conveyor belt and a tray disposed on the conveyor belt, the tray being used to carry the pre-filled syringe.

[0009] Optionally, the feeding section includes a track, a first conveyor and a second conveyor. The output end of the first conveyor is connected to the track and is used to generate vibration to drive the track to vibrate. The second conveyor is disposed at one end of the track near the transfer section and is used to stop the seal.

[0010] Optionally, the transfer unit includes:

[0011] A first transfer member is movably disposed above the second conveying member. The first transfer member is provided with a retractable second transfer member, which extends out of the first transfer member and inserts into the sealing member.

[0012] A rotating shaft is rotatably disposed between the loading section and the loading station. A third transfer member for clamping the sealing element is provided on the side wall of the rotating shaft. When the rotating shaft is rotated to the first position, the third transfer member is located below the first transfer member. When the rotating shaft is rotated to the second position, the third transfer member is located above the loading station.

[0013] Optionally, the transfer unit further includes a first lifting assembly, the output end of which is connected to a connecting block, and the rotating shaft is rotatably connected to the connecting block.

[0014] Optionally, the third transfer component includes a first fixing block, a second fixing block, a clamping block, and a spring. The first fixing block is fixedly connected to the rotating shaft. The first fixing block and the second fixing block are spaced apart and fixedly connected by multiple fixing rods. The clamping block is located between the first fixing block and the second fixing block. The fixing rods pass through the clamping block, and the clamping block can reciprocate along the axial direction of the fixing rods. The spring is located between the clamping block and the first fixing block to drive the clamping block to fit against the second fixing block. The end of the clamping block has a first protrusion.

[0015] The cap feeding and pressing integrated device further includes a driving block, which is disposed at the end of the clamping block where the first protrusion is provided and is located on one side of the first protrusion; the driving block is provided with a second protrusion, which is configured to squeeze the first protrusion when the third transfer member moves downward, so as to drive the clamping block to move away from the second fixing block.

[0016] Optionally, the second fixing block has a first protrusion on the upper part of the side near the clamping block, and the clamping block has a second protrusion on the lower part of the side near the second fixing block; when the first protrusion is in contact with the clamping block, the second protrusion is in contact with the second fixing block.

[0017] The second fixing block is provided with a through hole at the connection between it and the first protrusion. The lower part of the second fixing block is provided with a first semi-blind hole that communicates with and is coaxial with the through hole. The second protrusion is provided with a second semi-blind hole that is coaxial with the through hole on the side facing the second fixing block. When the second protrusion and the second fixing block are in contact, the through hole, the first semi-blind hole and the second semi-blind hole surround each other to form a blind hole.

[0018] Optionally, the turntable assembly includes a turntable body, grippers, and a drive unit. The loading station is located on the turntable body, and each loading station is provided with multiple grippers. The drive unit is located at the bottom of the turntable body to drive the turntable body to rotate.

[0019] Optionally, the turntable assembly further includes a positioning mechanism, which has a positioning pin that can extend and retract vertically; the turntable body is provided with a plurality of positioning holes, each positioning hole corresponding to a loading station; in a preset position, the positioning pin is inserted into one of the positioning holes.

[0020] Optionally, the cap feeding and cap pressing integrated device further includes a material feeding robot and a material feeding slide rail; along the rotation direction of the turntable assembly, the material feeding robot is located downstream of the second feeding assembly, and is used to clamp and transfer the pre-filled needle tube after cap pressing to the material feeding slide rail.

[0021] The present invention also provides a control method for a cap feeding and pressing integrated device, applicable to the cap feeding and pressing integrated device as described in any of the above claims; the control method includes the following steps:

[0022] The pre-filled syringes are delivered and placed at the loading station;

[0023] The turntable assembly rotates, moving the feeding manifold carrying the pre-filled syringe to the position of the second feeding assembly;

[0024] The feeding section conveys the seal to one end near the feeding station; the transfer section transfers the seal and seals it onto the pre-filled needle tube.

[0025] Optionally, the transfer section transfers the seal and caps it onto the pre-filled syringe, including:

[0026] The first transfer member lifts up after holding the seal; the rotating shaft rotates to the first position, at which point the third transfer member is located below the first transfer member.

[0027] The first transfer member descends and places the seal into the third transfer member; the third transfer member clamps the seal; the rotating shaft rotates to the second position, at which point the third transfer member is located above the loading station.

[0028] The first lifting component drives the rotating shaft to descend, sealing the pre-filled syringe with a seal.

[0029] The beneficial effects of this invention are as follows:

[0030] In the cap feeding and pressing integrated device provided by this invention, a first feeding component and a second feeding component are sequentially arranged around a turntable assembly to transfer the pre-filled syringe and the sealing component, respectively. After the pre-filled syringe is transferred to the feeding station, the turntable assembly rotates to move the feeding station with the pre-filled syringe to the second feeding component. The transfer part of the second feeding component transfers the sealing component and seals it onto the pre-filled syringe. This allows the feeding, positioning, and pressurization of the sealing component to be completed on a single device, saving operating space, reducing equipment complexity and manufacturing costs, and lowering the difficulty and energy consumption of later maintenance. Attached Figure Description

[0031] Figure 1 This is a schematic structural diagram of an integrated cap feeding and pressing device provided in an embodiment of the present invention;

[0032] Figure 2 This is a schematic structural diagram of an integrated cap feeding and pressing device provided in an embodiment of the present invention;

[0033] Figure 3 yes Figure 2 A schematic enlarged view of part A in the middle;

[0034] Figure 4 This is a schematic top view of a cap feeding and pressing integrated device provided in an embodiment of the present invention;

[0035] Figure 5 This is a schematic structural diagram of the second feeding component in the cap feeding and pressing integrated device provided in an embodiment of the present invention;

[0036] Figure 6 This is a schematic partial structural diagram of the second feeding assembly provided in an embodiment of the present invention;

[0037] Figure 7 This is a schematic partial structural diagram of the transfer section provided in an embodiment of the present invention;

[0038] Figure 8 This is a schematic partial structural diagram of the second feeding assembly provided in an embodiment of the present invention;

[0039] Figure 9 This is a schematic partial structural diagram of the transfer section provided in an embodiment of the present invention;

[0040] Figure 10 This is a schematic cross-sectional view of the third transfer member provided in an embodiment of the present invention;

[0041] Figure 11 This is a schematic diagram illustrating the cap-pressing action in an integrated cap-feeding and cap-pressing device according to an embodiment of the present invention.

[0042] Figure 12 This is a schematic cross-sectional view of the third transfer member provided in an embodiment of the present invention;

[0043] Figure 13 This is a schematic structural diagram of the turntable assembly in the cap feeding and pressing integrated device provided in an embodiment of the present invention;

[0044] Figure 14 This is a schematic structural diagram of the turntable assembly in the cap feeding and pressing integrated device provided in an embodiment of the present invention.

[0045] Explanation of reference numerals in the attached figures:

[0046] 100. Turntable assembly; 110. Loading station; 120. Turntable body; 130. Gripper; 140. Drive unit; 150. Positioning mechanism; 151. Positioning pin; 200. First loading assembly; 210. Conveyor belt; 220. Pallet; 300. Second loading assembly; 310. Loading section; 311. Track; 312. Second conveyor; 320. Transfer section; 321. First transfer component; 3211. Second transfer component; 322. Rotating shaft; 323. Third transfer component; 3231. First fixing block. 3232, Second fixing block; 32321, First protrusion; 32322, Through hole; 32323, First semi-blind hole; 3233, Clamping block; 32331, Second protrusion; 32332, Second semi-blind hole; 3234, Fixing rod; 3235, Spring; 3236, First protrusion; 324, First lifting assembly; 325, Drive block; 3251, Second protrusion; 326, Second lifting assembly; 400, Unloading robot; 500, Unloading slide rail; 610, Seal; 620, Pre-filled needle tube. Detailed Implementation

[0047] To make the technical problems solved, the technical solutions, and the beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0048] In the description of this invention, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the 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, and therefore should not be construed as a limitation of the invention. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0049] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 invention based on the specific circumstances.

[0050] Figure 1 This is a schematic structural diagram of a cap-feeding and cap-pressing integrated device provided in an embodiment of the present invention. Figure 1 As shown, and refer to Figures 2 to 14 The present invention provides a cap feeding and cap pressing integrated device, including a turntable assembly 100, a first feeding assembly 200 and a second feeding assembly 300. The turntable assembly 100 is rotatably configured and has a plurality of feeding stations 110 spaced apart along its circumference. The first feeding assembly 200 and the second feeding assembly 300 are arranged around the turntable assembly 100. The first feeding assembly 200 is used to convey the pre-filled needle tube 620 to the feeding station 110. The second feeding assembly 300 has a feeding part 310 and a transfer part 320. The feeding part 310 is used to convey the sealing element 610. The transfer part 320 is disposed at one end of the feeding part 310 near the feeding station 110 and is used to transfer the sealing element 610 and seal it on the pre-filled needle tube 620.

[0051] In this embodiment, a first feeding assembly 200 and a second feeding assembly 300 are sequentially arranged around the turntable assembly 100, respectively for conveying the pre-filled syringe 620 and the sealing element 610. After the pre-filled syringe 620 is conveyed to the feeding station 110, the turntable assembly 100 rotates to move the feeding station 110 with the pre-filled syringe 620 to the second feeding assembly 300. The transfer part 320 of the second feeding assembly 300 transfers the sealing element 610 and seals it onto the pre-filled syringe 620. This allows the feeding, positioning, and pressurization of the sealing element 610 to be completed on a single device, saving operating space, reducing equipment complexity and manufacturing costs, and lowering the difficulty of later maintenance and energy consumption.

[0052] like Figure 2 , Figure 13 , Figure 14 As shown, in one embodiment of the present invention, the turntable assembly 100 includes a turntable body 120, grippers 130, and a drive unit 140. A loading station 110 is disposed on the turntable body 120, and each loading station 110 is provided with multiple grippers 130. The drive unit 140 is disposed at the bottom of the turntable body 120 to drive the turntable body 120 to rotate. Further, the first loading assembly 200 includes a conveyor belt 210 and a tray 220 disposed on the conveyor belt 210. The tray 220 is used to carry pre-filled syringes 620. In application, the conveyor belt 210 transports the tray 220 and the pre-filled syringes 620 thereon to a position close to the turntable body 120, and then a lifting robot grips the pre-filled syringes 620 and feeds them into the grippers 130 on the loading station 110. Finally, by starting the drive unit 140 to rotate, the drive unit 140 drives the turntable body 120 to rotate, and the pre-filled syringe 620 is moved to the next station.

[0053] like Figure 5 , Figure 6 As shown, in one embodiment of the present invention, the feeding section 310 includes a track 311, a first conveyor and a second conveyor 312. The output end of the first conveyor is connected to the track 311 and is used to generate vibration to drive the track 311 to vibrate. The second conveyor 312 is disposed at one end of the track 311 near the transfer section 320 and is used to stop the sealing member 610. Specifically, along the length direction of the track 311, the width of the track 311 decreases, and the narrow end of the track 311 is the end near the turntable body 120, so that the sealing member 610 can vibrate and move in the track 311 to the position of the second conveyor 312.

[0054] like Figures 6 to 9As shown, in one embodiment of the present invention, the transfer unit 320 includes a first transfer member 321 and a rotating shaft 322. The first transfer member 321 is movably disposed above the second conveying member 312. The first transfer member 321 is provided with a retractable second transfer member 3211. When the second transfer member 321 extends out of the first transfer member 321, it is inserted into the sealing member 610. There are multiple second transfer members 3211, and they are arranged one-to-one with the track 311. The rotating shaft 322 is rotatably disposed between the loading unit 310 and the loading station 110. A third transfer member 323 for clamping the sealing member 610 is provided on the side wall of the rotating shaft 322. When the rotating shaft 322 rotates to the first position, the third transfer member 323 is located below the first transfer member 321. When the rotating shaft 322 rotates to the second position, the third transfer member 323 is located above the loading station 110.

[0055] Through the coordinated design of the first transfer member 321 and the rotating shaft 322, high-precision transfer and capping operations of the sealing member 610 are achieved. The first transfer member 321 is movably positioned above the second conveyor 312 to ensure accurate gripping of the sealing member 610. Specifically, before the rotating shaft 322 rotates to the first position, the first transfer member 321 moves downward, while the second transfer member 3211 extends downward and inserts into the sealing member 610, forming an interference fit. Then, the first transfer member 321 moves upward, carrying the sealing member 610 out of the position of the second conveyor 312. The rotating shaft 322 drives the third transfer member 323 to switch between two key positions through rotational motion. The first position is used to receive the sealing member 610 transferred by the first transfer member 321, while the second position is precisely positioned above the loading station 110 to complete the capping operation. This design not only simplifies the transfer path of the seal 610 and reduces space occupation, but also improves the alignment accuracy and operational stability of the cap through a rotation positioning mechanism, reducing reliance on complex multi-axis mechanical structures, thereby improving the overall reliability and production efficiency of the equipment.

[0056] Furthermore, the transfer unit 320 also includes a first lifting assembly 324 and a second lifting assembly 326. The output end of the first lifting assembly 324 is connected to a connecting block, and the rotating shaft 322 is rotatably connected to the connecting block. By setting the first lifting assembly 324, a vertical lifting freedom is introduced into the capping process. When the rotating shaft 322 rotates to the second position, the first lifting assembly 324 drives the rotating shaft 322 to move downwards, which improves the accuracy and reliability of the transfer and capping process of the sealing element 610. The first transfer element 321 is disposed on the output end of the second lifting assembly 326, so that the second lifting assembly 326 drives the first transfer element 321 to move up and down.

[0057] like Figure 3 , Figures 10 to 12As shown, in one embodiment of the present invention, the third transfer member 323 includes a first fixing block 3231, a second fixing block 3232, a clamping block 3233, and a spring 3235. The first fixing block 3231 is fixedly connected to the rotating shaft 322. The first fixing block 3231 and the second fixing block 3232 are spaced apart and fixedly connected by a plurality of fixing rods 3234. The clamping block 3233 is disposed between the first fixing block 3231 and the second fixing block 3232. The fixing rods 3234 pass through the clamping block 3233, and the clamping block 3233 can reciprocate along the axial direction of the fixing rods 3234. The spring 3235 is disposed between the clamping block 3233 and the first fixing block 3231 to drive the clamping block 3233 to fit against the second fixing block 3232. The end of the clamping block 3233 is provided with a first protrusion 3236. The cap feeding and pressing integrated device also includes a drive block 325, which is located at one end of the clamping block 3233 where the first protrusion 3236 is located, and is located on one side of the first protrusion 3236. The drive block 325 is provided with a second protrusion 3251, which is configured to squeeze the first protrusion 3236 when the third transfer member 323 moves downward, so as to drive the clamping block 3233 to move towards the first fixing block 3231.

[0058] In this embodiment, when the third transfer member 323 rotates to the first position, the second lifting assembly 326 drives the first transfer member 321 to move downward, sending the sealing member 610 between the second fixing block 3232 and the clamping block 3233, while simultaneously compressing the spring 3235. Then, the second transfer member 3211 retracts into the first transfer member 321. Under the stop of the portion around the second transfer member 3211 on the first transfer member 321, the second transfer member 3211 is retracted into the first transfer member 321, while the sealing member 610 remains between the second fixing block 3232 and the clamping block 3233. At the same time, under the action of the elastic force of the spring 3235, the sealing member 610 is tightly clamped between the second fixing block 3232 and the clamping block 3233. At this time, the opening of the sealing member 610 faces upward.

[0059] Then, the third transfer member 323 rotates 150° to 200° to the second position. At this time, the opening of the seal 610 faces downward and is located directly above the pre-filled syringe 620 in the loading station 110. The first lifting assembly 324 drives the third transfer member 323 to move downward through the rotating shaft 322. During the movement: the first protrusion 3236 first contacts the second protrusion 3251 on the driving block 325. As the movement continues, the first protrusion 3236 and the second protrusion 3251 squeeze each other, causing the first protrusion 3236 to drive the clamping block 3233 to move away from the second fixed block 3232, so that the seal 610 is released and falls on the pre-filled syringe 620. At this time, the spring 3235 is compressed again. After the first protrusion 3236 passes the second protrusion 3251, the spring 3235 returns to its original shape, so that the clamping block 3233 and the second fixed block 3232 fit tightly together. The third transfer element 323 continues to move downwards, sealing the seal 610 onto the pre-filled syringe 620, thus completing the capping action.

[0060] This invention seamlessly connects the transfer, alignment, release, and pressing steps of the seal 610 through the rotation / lifting of the third transfer member 323 and the clamping and placing of the clamping block 3233, significantly improving production efficiency. During application, the spring force of the spring 3235 drives the clamping block 3233 to adhere to the second fixing block 3232 to clamp the seal 610. The clamping force is stable and controllable, effectively preventing the seal 610 from accidentally falling off during transport. Furthermore, through the ingenious interaction between the second protrusion 3251 on the drive block 325 and the first protrusion 3236 on the clamping block 3233, precise mechanical triggering and release are achieved: the clamping block 3233 is squeezed and moved to release the seal 610 only when the third transfer member 323 is pressed down to a specific position, ensuring that the seal 610 is accurately placed on the pre-filled syringe 620 at the correct time and position.

[0061] Preferably, the first protrusion 3236 is a bearing, the axis of which is perpendicular to the moving direction of the third transfer member 323, and the peripheral surface of the bearing is in contact with the second protrusion 3251.

[0062] Furthermore, the second fixing block 3232 has a first protrusion 32321 on the upper part of the side near the clamping block 3233, and the clamping block 3233 has a second protrusion 32331 on the lower part of the side near the second fixing block 3232; when the first protrusion 32321 is in contact with the clamping block 3233, the second protrusion 32331 is in contact with the second fixing block 3232. A through hole 32322 is provided at the connection between the second fixing block 3232 and the first protrusion 32321. A first semi-blind hole 32323, coaxial with and communicating with the through hole 32322, is provided at the lower part of the second fixing block 32321. A second semi-blind hole 32332, coaxial with the through hole 32322, is provided on the side of the second protrusion 32331 facing the second fixing block 3232. When the second protrusion 32331 and the second fixing block 3232 are in contact, the first semi-blind hole 32323 and the second semi-blind hole 32332 surround each other and communicate with the through hole 32322, forming a larger blind hole. Furthermore, the diameters of the first semi-blind hole 32323 and the second semi-blind hole 32332 decrease progressively, and the larger diameter end communicates with the through hole 32322.

[0063] It should be noted that a semi-blind hole is a combination of the terms "semi-hole" and "blind hole," meaning a structure formed by dividing a blind hole into two parts along its axis or in a direction parallel to it.

[0064] In this embodiment, when the second lifting assembly 326 moves the first transfer member 321 downward, the sealing member 610 first enters the through hole 32322; the first transfer member 321 continues to move downward, and the sealing member 610 enters between the first semi-blind hole 32323 and the second semi-blind hole 32332; since the diameters of the first semi-blind hole 32323 and the second semi-blind hole 32332 decrease, the second transfer member 3211 moves downward, spreading the second fixing block 3232 and the second protrusion 32331 apart, compressing the spring 3235; then the second transfer member 3211 retracts upward into the first transfer member 321, and the portion around the second transfer member 3211 on the first transfer member 321 stops the sealing member 610, keeping the sealing member 610 inside the blind hole, while the spring 3235 returns to its original shape, causing the second protrusion 32331 to move closer to the second fixing block 3232, tightly clamping the sealing member 610. Figure 11As shown, when the third transfer member 323 rotates 180° to the second position, the opening of the seal 610 faces downward and is located directly above the pre-filled syringe 620 in the loading station 110. The first lifting assembly 324 drives the third transfer member 323 to move downward through the rotating shaft 322. During the movement: the first protrusion 3236 first contacts the second protrusion 3251 on the driving block 325. As the movement continues, the first protrusion 3236 and the second protrusion 3251 squeeze each other, causing the first protrusion 3236 to drive the clamping block 3233 to move away from the second fixing block 3232. The second fixing block 3232 separates from the second protrusion 32331, causing the seal 610 to be released and fall onto the pre-filled syringe 620. At this time, the spring 3235 is compressed again. After the first protrusion 3236 passes the second protrusion 3251, the spring 3235 returns to its original shape, causing the clamping block 3233 to fit tightly against the second fixing block 3232. The third transfer component 323 continues to move downwards, and the bottom of the blind hole abuts against the seal 610. Under the action of the first lifting component 324, the seal 610 is sealed onto the pre-filled needle tube 620, completing the capping action.

[0065] In this embodiment of the invention, the first protrusion 32321 on the second fixing block 3232 and the second protrusion 32331 on the clamping block 3233 cooperate with each other, enhancing the alignment and stability of the clamping. Furthermore, the designed through hole 32322, the first semi-blind hole 32323, and the second semi-blind hole 32332 together form a cavity for guiding and accommodating the sealing element 610. This not only helps in the initial positioning of the sealing element 610 before clamping but also better constrains the sealing element 610 during the capping process, preventing it from tilting and ensuring the pressing quality. The design of the two semi-blind holes with decreasing diameters helps the second transfer component to spread the second fixing block 3232 and the second protrusion 32331, providing better holding force for clamping the sealing element 610. Therefore, the integrated cap feeding and cap pressing device of this embodiment not only improves the efficiency and automation of sealing element 610 installation but, more importantly, significantly improves the positioning accuracy, operational stability, and final pressing quality of the sealing element 610 during the conveying, releasing, and capping processes through its reliable mechanical structure and ingenious logical coordination.

[0066] Specifically, a drive motor is provided at the upper end of the first transfer member 321, and a second transfer member 3211 passes through the first transfer member 321 and is connected to the output end of the drive motor, so that the drive motor drives the second transfer member 3211 to move up and down, causing the second transfer member 3211 to extend out of or retract into the first transfer member 321. Alternatively, a cylinder is provided at the upper end of the first transfer member 321, and the second transfer member 3211 is connected to the piston rod of the cylinder.

[0067] In one embodiment of the present invention, the turntable assembly 100 further includes a positioning mechanism 150, which has a positioning pin 151 that can extend and retract vertically. The turntable body 120 is provided with multiple positioning holes, each corresponding to a loading station 110. When the turntable rotates to a preset position, the positioning pin 151 extends upward and inserts into the corresponding positioning hole, achieving precise positioning. At this time, the loading station 110 can be locked by a knob, thereby adapting to the installation requirements of pre-filled syringes of different specifications and models.

[0068] In addition, such as Figure 4 As shown, the cap feeding and cap pressing integrated device also includes a feeding robot 400 and a feeding slide rail 500. Along the rotation direction of the turntable assembly 100, the feeding robot 400 is positioned downstream of the second feeding assembly 300, used to clamp and transfer the pre-filled needle tube 620 after cap pressing onto the feeding slide rail 500. After cap pressing is completed, the turntable body 120 continues to rotate, rotating the pre-filled needle tube 620 with the cap pressed to the position of the feeding robot 400, which then clamps the pre-filled needle tube 620 and transfers it onto the feeding slide rail 500, completing the discharge action.

[0069] This invention also provides a control method for a cap feeding and pressing integrated device, applicable to the cap feeding and pressing integrated device as described in any of the above embodiments; the control method includes the following steps:

[0070] The pre-filled syringe 620 is conveyed and placed into the loading station 110;

[0071] The turntable assembly 100 rotates, moving the feeding station 110, which carries the pre-filled syringe 620, to the position of the second feeding assembly 300;

[0072] The feeding section 310 conveys the seal 610 to one end near the feeding station 110; the transfer section 320 transfers the seal 610 and seals it onto the pre-filled syringe 620.

[0073] Specifically, the transfer section 320 transfers and caps the seal 610 onto the pre-filled syringe 620, including:

[0074] The first transfer member 321 lifts up after holding the seal 610; the rotating shaft 322 rotates to the first position, at which time the third transfer member 323 is located below the first transfer member 321.

[0075] The first transfer member 321 descends and places the seal 610 into the third transfer member 323; the third transfer member 323 clamps the seal 610; the rotating shaft 322 rotates to the second position, at which time the third transfer member 323 is located above the loading station 110.

[0076] The first lifting assembly 324 drives the rotating shaft 322 to descend, sealing the seal 610 onto the pre-filled syringe 620.

[0077] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. 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. Such 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, and should all be included within the protection scope of the present invention.

Claims

1. A sealing device for an injection, characterized in that, It includes a turntable assembly (100), a first feeding assembly (200), and a second feeding assembly (300). The turntable assembly (100) is rotatably configured and has a plurality of feeding stations (110) spaced apart along its circumference. The first feeding assembly (200) and the second feeding assembly (300) are arranged around the turntable assembly (100). The first feeding assembly (200) is used to convey the pre-filled syringe (620) to the feeding station (110); The second feeding assembly (300) has a feeding section (310) and a transfer section (320). The feeding section (310) is used to transport the sealing element (610). The transfer section (320) is located at one end of the feeding section (310) near the feeding station (110) and is used to transfer the sealing element (610) and seal it on the pre-filled needle tube (620).

2. The sealing device according to claim 1, characterized in that, The first feeding assembly (200) includes a conveyor belt (210) and a tray (220) disposed on the conveyor belt (210), the tray (220) being used to carry the pre-filled syringe (620).

3. The sealing device according to claim 1, characterized in that, The feeding section (310) includes a track (311), a first conveyor and a second conveyor (312). The output end of the first conveyor is connected to the track (311) and is used to generate vibration to drive the track (311) to vibrate. The second conveyor (312) is disposed at one end of the track (311) near the transfer section (320) and is used to stop the seal (610).

4. The sealing device according to claim 3, characterized in that, The transfer unit (320) includes: A first transfer member (321) is disposed above the second conveyor (312) and is movable up and down; the first transfer member (321) is provided with a retractable second transfer member (3211), which is inserted into the seal (610) when it extends out of the first transfer member (321); A rotating shaft (322) is rotatably disposed between the loading section (310) and the loading station (110). A third transfer member (323) for clamping the sealing member (610) is connected to the side wall of the rotating shaft (322). When the rotating shaft (322) is rotated to the first position, the third transfer member (323) is located below the first transfer member (321). When the rotating shaft (322) is rotated to the second position, the third transfer member (323) is located above the loading station (110).

5. The sealing device according to claim 4, characterized in that, The transfer unit (320) further includes a first lifting assembly (324), the output end of which is connected to a connecting block, and the rotating shaft (322) is rotatably connected to the connecting block.

6. The sealing device according to claim 5, characterized in that, The third transfer component (323) includes a first fixing block (3231), a second fixing block (3232), a clamping block (3233), and a spring (3235). The first fixing block (3231) is fixedly connected to the rotating shaft (322). The first fixing block (3231) and the second fixing block (3232) are spaced apart and fixedly connected by a plurality of fixing rods (3234). The clamping block (3233) is disposed between the first fixing block (3231) and the second fixing block (3232). Between the fixing blocks (3232), the fixing rod (3234) passes through the clamping block (3233), and the clamping block (3233) can reciprocate along the axial direction of the fixing rod (3234); the spring (3235) is disposed between the clamping block (3233) and the first fixing block (3231) to drive the clamping block (3233) to fit against the second fixing block (3232); the end of the clamping block (3233) is provided with a first protrusion (3236); The cap feeding and pressing integrated device further includes a driving block (325), which is disposed at one end of the clamping block (3233) where the first protrusion (3236) is located, and is located on one side of the first protrusion (3236); the driving block (325) is provided with a second protrusion (3251), which is configured to squeeze the first protrusion (3236) when the third transfer member (323) moves downward, so as to drive the clamping block (3233) to move away from the second fixing block (3232).

7. The sealing device according to claim 6, characterized in that, The second fixing block (3232) has a first protrusion (32321) on the upper part of the side near the clamping block (3233), and the clamping block (3233) has a second protrusion (32331) on the lower part of the side near the second fixing block (3232); when the first protrusion (32321) is in contact with the clamping block (3233), the second protrusion (32331) is in contact with the second fixing block (3232); The second fixing block (3232) is provided with a through hole (32322) at the connection between it and the first protrusion (32321). The lower part of the second fixing block (3232) is provided with a first semi-blind hole (32323) that communicates with and is coaxial with the through hole (32322). The second protrusion (32331) is provided with a second semi-blind hole (32332) that is coaxial with the through hole (32322) on the side facing the second fixing block (3232). When the second protrusion (32331) and the second fixing block (3232) are in contact, the through hole (32322), the first semi-blind hole (32323), and the second semi-blind hole (32332) surround each other to form a blind hole.

8. The sealing device according to claim 1, characterized in that, The turntable assembly (100) includes a turntable body (120), grippers (130), and a drive unit (140). The loading station (110) is located on the turntable body (120), and each loading station (110) is provided with multiple grippers (130). The drive unit (140) is located at the bottom of the turntable body (120) to drive the turntable body (120) to rotate.

9. The sealing device according to claim 8, characterized in that, The turntable assembly (100) further includes a positioning mechanism (150), which has a positioning pin (151) that can extend and retract vertically; the turntable body (120) is provided with a plurality of positioning holes, each positioning hole corresponding to a loading station (110); in a preset position, the positioning pin (151) is inserted into a positioning hole.

10. The sealing device according to claim 1, characterized in that, The cap feeding and cap pressing integrated device also includes a material feeding robot (400) and a material feeding slide rail (500); along the rotation direction of the turntable assembly (100), the material feeding robot (400) is located downstream of the second feeding assembly (300) and is used to clamp and transfer the pre-filled needle tube (620) after cap pressing to the material feeding slide rail (500).

11. A control method for a sealing device, characterized in that, The control method is applied to the cap feeding and pressing integrated device as described in any one of claims 1 to 10; the control method includes the following steps: The pre-filled syringe (620) is conveyed and placed in the loading station (110); The turntable assembly (100) rotates, moving the feeding station (110) carrying the pre-filled syringe (620) to the position of the second feeding assembly (300); The feeding section (310) conveys the seal (610) to one end near the feeding station (110); the transfer section (320) transfers the seal (610) and seals it onto the pre-filled needle tube (620).

12. The sealing device according to claim 11, characterized in that, The transfer unit (320) transfers the seal (610) and caps it onto the pre-filled syringe (620), comprising: The first transfer member (321) holds the seal (610) and then rises; the rotating shaft (322) rotates to the first position, at which time the third transfer member (323) is located below the first transfer member (321); The first transfer member (321) descends and places the seal (610) into the third transfer member (323); the third transfer member (323) clamps the seal (610); when the rotating shaft (322) rotates to the second position, the third transfer member (323) is located above the loading station (110); The first lifting assembly (324) drives the rotating shaft (322) to descend, sealing the seal (610) onto the pre-filled needle tube (620).

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