Pre-filled syringe assembly apparatus

Abstract

The present application belongs to the technical field of syringe assembling equipment, and provides a pre-filled syringe assembling equipment, which comprises an assembling turntable, a clamping assembly, a dosing ring feeding assembly, a push rod assembling assembly, a first push rod detecting assembly, a piston assembling assembly and a sleeve assembling assembly. The assembling turntable is intermittently rotated, and the assembling turntable is circumferentially provided with a dosing ring feeding station, a push rod assembling station, a piston assembling station and a sleeve assembling station. The pre-filled syringe assembling equipment provided by the present application has the advantages that: the assembling procedures are circularly connected together, so that the device structure is more compact; during the assembling process, the components and positions of clamping fixation do not need to be frequently switched, so that the production line is more simple, and the required equipment is effectively reduced; and when the syringe assembling is completed, the clamping assembly is emptied, so that the clamping assembly directly enters the next cycle, the assembling process is more simple, and the required equipment is further reduced.

Description

Technical Field

[0001] This invention belongs to the technical field of syringe assembly equipment, and specifically relates to a pre-filled syringe assembly device. Background Technology

[0002] Prefilled syringes are a new type of syringe that preloads drugs into the syringe. They typically include a metering ring, a piston, a plunger, and a sleeve. The plunger has external threads on its side, and the metering ring has internal threads on its inside. The metering ring is screwed onto the plunger, the piston is engaged with the lower end of the plunger, and the plunger slides inside the sleeve.

[0003] Prefilled syringes save on medicine bottles and have high practical value, but they still require a lot of manual labor to assemble the metering ring, piston, plunger and sleeve before filling with medicine. This is not only inefficient and costly, but also cannot guarantee the sterility requirements of the syringe.

[0004] In the existing technology, there are some devices that assemble two components separately. During assembly, one component is usually clamped and fixed, and then the other component is manipulated for assembly. However, since the devices that assemble different components usually have different components that need to be clamped and fixed, and the clamping positions are not uniform, the production line composed of multiple assembly devices connected in series is more complex and requires more equipment. Summary of the Invention

[0005] The present invention provides a pre-filled syringe assembly device, which aims to solve the technical problems described in the background art above.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is to provide a pre-filled syringe assembly device, comprising: An assembly turntable is configured to rotate intermittently. The assembly turntable is circumferentially equipped with a quantitative ring feeding station, a push rod assembly station, a piston assembly station, and a sleeve assembly station. A clamping assembly is fixedly connected to the assembly turntable and is used to clamp a metering ring. The assembly turntable drives the clamping assembly to clamp the metering ring sequentially through the metering ring feeding station, the push rod assembly station, the piston assembly station and the sleeve assembly station, thereby completing the feeding of the metering ring and the assembly of the push rod, piston and sleeve. A metering ring feeding assembly is provided at the metering ring feeding station and is used to place the metering ring into the clamping assembly located at the metering ring feeding station; A push rod assembly assembly is provided at the push rod assembly station and is used to insert the push rod into the metering ring located in the clamping assembly at the push rod assembly station; A piston assembly assembly, located at the piston assembly station, is used to load the piston onto a push rod located on the clamping assembly at the piston assembly station; and A sleeve assembly assembly is provided at the sleeve assembly station and is used to remove the push rod located at the sleeve assembly station from the clamping assembly and insert it into the sleeve.

[0007] In one possible implementation of the pre-filled syringe assembly device provided by the present invention, the assembly turntable includes a rotating disc body and a fixed frame. The rotating disc body is arranged to rotate intermittently, and the fixed frame is arranged on the upper side of the rotating disc body and spaced apart from the rotating disc body.

[0008] In one possible implementation of the pre-filled syringe assembly device provided by the present invention, the assembly turntable further includes: Rack, fixed installation; and A cam divider is connected to the frame. The cam divider has an inner ring and an outer ring. The inner ring is fixedly installed, and the outer ring is used to output power. The rotating disk is connected to the inner ring of the cam divider, and the fixed frame is connected to the outer ring of the cam divider.

[0009] In one possible implementation of the pre-filled syringe assembly device provided by the present invention, the clamping assembly includes: Several clamping components are spaced apart along the circumference of the assembly turntable and connected to the rotating disk body. Each clamping component has several elastic clamping positions for clamping a metering ring. At least two release components are provided, both at the metering ring feeding station and the sleeve assembly station. The release components are connected to the fixing frame and are used to release the metering ring by the clamping component.

[0010] In one possible implementation of the pre-filled syringe assembly device provided by the present invention, the clamping assembly includes: A fixing block is fixed on the assembly turntable. It has several first half holes on one side and first half grooves on both sides of the first half holes. The first half grooves are connected to the first half holes. A movable block is provided on one side of the fixed block. The movable block has a plurality of second half holes on the side facing the fixed block. Second half grooves are provided on both sides of the second half holes. The second half holes correspond one-to-one with the first half holes and are aligned to form the elastic clamping position. The second half grooves correspond one-to-one with the first half grooves and are aligned to form the clearance groove. Several guide rods are arranged parallel to each other on the side of the movable block facing the fixed block. Each guide rod passes through the fixed block and slides with it. One end of each guide rod is connected to the movable block, and the other end is provided with a stop. Several return springs are provided on the side of the fixed block facing away from the movable block, corresponding one-to-one with the guide rod and sleeved on the guide rod. One end of the return spring abuts against the fixed block, and the other end abuts against the stop block.

[0011] The release component includes: The release cylinder is fixedly connected to the fixed frame; and The release bracket, connected to the power output end of the release cylinder, is used to push the guide rod.

[0012] In one possible implementation of the pre-filled syringe assembly device provided by the present invention, the metering loop feeding assembly includes: A metering loop placement assembly is used to hold the metering loops to be assembled; and A quantitative ring assembly includes a quantitative ring gripper and a quantitative ring drive assembly. The power output end of the quantitative ring drive assembly is connected to the quantitative ring gripper, and is used to drive the quantitative ring gripper to grab a quantitative ring from the quantitative ring placement assembly and place it into the clamping assembly located at the quantitative ring feeding station.

[0013] In one possible implementation of the pre-filled syringe assembly device provided by the present invention, the metering ring feeding assembly further includes: The quantitative loop assembly bracket is fixedly installed; and The quantitative ring transport assembly is used to transport quantitative rings to the quantitative ring placement assembly; The quantitative loop transport component includes: A metering ring vibration assembly is connected to the metering ring assembly bracket; A quantitative ring transport frame, connected to a vibration assembly, is provided with several quantitative ring track grooves. The quantitative rings are adapted to slide along the quantitative ring track grooves. The quantitative ring vibration assembly is used to drive the quantitative ring transport frame to vibrate. A quantitative ring vibratory feeder is connected to the quantitative ring transport frame and is used to transport quantitative rings to the quantitative ring transport frame.

[0014] In one possible implementation of the pre-filled syringe assembly device provided by the present invention, the metering loop placement assembly includes: A metering ring placement rack, slidably engaged with the metering ring assembly bracket, is located at the end of the metering ring track groove and has the freedom to slide in a direction perpendicular to the conveying direction at the end of the metering ring track groove. The metering ring placement rack has several metering ring storage slots on the side facing the metering ring track groove. Each metering ring storage slot corresponds one-to-one with a metering ring track groove; when a metering ring storage slot is aligned with a metering ring track groove, the metering rings in the metering ring track groove slide into the metering ring storage slot. A quantitative ring misalignment drive assembly is connected to the quantitative ring assembly bracket, and its power output end is connected to the quantitative ring placement frame to drive the quantitative ring placement frame to slide along the quantitative ring assembly bracket.

[0015] In one possible implementation of the pre-filled syringe assembly device provided by the present invention, the push rod assembly assembly includes: The first push rod assembly bracket is fixedly installed; A push rod placement assembly is located outside the push rod assembly station and is used to store push rods to be assembled. The first push rod drive assembly is connected to the first push rod assembly bracket; and The push rod assembly is connected to the power output end of the first push rod drive assembly and is used to move between the push rod placement assembly and the metering ring located at the push rod assembly station under the drive of the first push rod drive assembly. The push rod assembly is provided with a rotating clamping assembly for clamping the push rod and driving the push rod to rotate.

[0016] In one possible implementation of the pre-filled syringe assembly device provided by the present invention, the push rod assembly assembly further includes a push rod transport assembly; the push rod transport assembly includes: The push rod vibration assembly is connected to the first push rod assembly bracket; A push rod transport frame, connected to a vibration assembly, is provided with several push rod track grooves. The upper end of each push rod is engaged in one of the push rod track grooves, suitable for sliding along the push rod track grooves. The push rod vibration assembly is used to drive the push rod transport frame to vibrate. A push rod vibratory feeder, which is connected to the push rod transport frame, is used to transport push rods to the push rod transport frame.

[0017] In one possible implementation of the pre-filled syringe assembly device provided by the present invention, the push rod placement assembly includes: A push rod placement rack is located at the end of the push rod track groove and fixed to the first push rod assembly bracket. The push rod placement rack has several push rod storage slots on the side facing the push rod track groove. Each push rod storage slot corresponds to and is aligned with one of the push rod track grooves, and push rods in the push rod track grooves slide into the push rod storage slots. A push rod push drive assembly is located on the lower side of the push rod placement frame and is used to push the push rod inside the push rod placement frame upward.

[0018] In one possible implementation of the pre-filled syringe assembly device provided by the present invention, the push rod assembly further includes: The push rod assembly is connected to the first push rod drive assembly or the power output end of the first push rod drive assembly, and is used to move under the drive of the first push rod drive assembly. The push rod buffer bracket is slidably engaged with the push rod assembly bracket and has the freedom to slide up and down relative to the push rod assembly bracket; Several buffer components are disposed between the push rod assembly frame and the push rod buffer frame; each buffer component includes a limiting rod and a buffer spring, the limiting rod passes through the push rod buffer frame and is connected to the push rod assembly frame at both ends; the buffer spring is sleeved on the limiting rod and abuts against the push rod assembly frame and the push rod buffer frame at both ends respectively; The rotating clamping assembly is connected to the push rod buffer frame.

[0019] In one possible implementation of the pre-filled syringe assembly device provided by the present invention, the push rod assembly further includes a first positioning component, the first positioning component comprising: Two first positioning frames are provided with first positioning half holes on opposite sides to form first positioning holes. The first positioning holes are coaxial with the lower metering ring to make the push rod coaxial with the metering ring. The first positioning drive component has its power output end connected to the two first positioning frames, and is used to drive the two first positioning frames to move towards or away from each other.

[0020] In one possible implementation of the pre-filled syringe assembly device provided by the present invention, the push rod assembly assembly includes two push rod assembly assemblies, and further includes: The second push rod assembly bracket is fixedly disposed between the piston assembly station and the sleeve assembly station; and The second push rod drive assembly is connected to the second push rod assembly bracket; The two push rod assembly components are respectively connected to the power output ends of the first push rod drive assembly and the second push rod drive assembly; the second push rod drive assembly is used to drive the push rod assembly components to move up and down.

[0021] In one possible implementation of the pre-filled syringe assembly device provided by the present invention, it further includes: The first push rod detection component is located at the push rod assembly station and is used to detect whether the push rod is assembled in place. A rejection assembly is provided between the push rod assembly station and the piston assembly station. The rejection assembly is located at the push rod rejection station and is used to reject push rods that are not properly assembled. The clamping assembly includes three release components, which are respectively located at the metering ring feeding station, the push rod rejection station, and the sleeve assembly station.

[0022] In one possible implementation of the pre-filled syringe assembly device provided by the present invention, the first push rod detection component includes: The first photoelectric sensor is fixedly connected to the push rod assembly frame; and The first sensing block is fixedly connected to the push rod buffer frame; The rejection component includes: Remove the gripper, used to hold the putter; and The rejection drive component is used to drive the rejection gripper to move.

[0023] In one possible implementation of the pre-filled syringe assembly device provided by the present invention, the push rod assembly assembly further includes a second push rod detection assembly, which is disposed between the second push rod assembly bracket and the sleeve assembly assembly, and is used to detect whether the push rod is assembled in place. The second push rod detection assembly includes: The second testing bracket is fixedly installed; and The second photoelectric sensor is located on the upper side of the push rod and is connected to the second detection bracket.

[0024] In one possible implementation of the pre-filled syringe assembly device provided by the present invention, the piston assembly assembly includes: A piston placement rack, located outside the piston assembly station, is used to store pistons to be assembled; and The piston assembly includes a push rod pusher and a piston pusher assembly. The push rod pusher is located on the upper side of the assembly turntable and is adapted to abut against the top of the push rod. The piston pusher assembly is located on the lower side of the piston placement bracket and is used to push the piston placement assembly upward.

[0025] In one possible implementation of the pre-filled syringe assembly equipment provided by the present invention, the piston is positioned between the piston assembly station and the sleeve assembly station; the piston detection assembly includes a third detection bracket and a third photoelectric sensor, the third detection bracket is fixedly installed, and the third photoelectric sensor is located on the lower side of the assembly turntable and connected to the third detection bracket to detect whether the piston is installed into the lower end of the push rod.

[0026] In one possible implementation of the pre-filled syringe assembly device provided by the present invention, the piston assembly assembly further includes a piston assembly bracket and a piston transport assembly, wherein the piston assembly bracket is fixedly disposed. The piston transport assembly includes: A piston vibration assembly is connected to the piston assembly bracket; A piston transport frame, connected to a vibration assembly, has several piston track grooves on it, along which the piston is adapted to slide. The piston vibration assembly drives the piston transport frame to vibrate. A piston vibratory plate, which is connected to the piston transport frame, is used to transport pistons to the piston transport frame; The piston placement frame is located at the end of the piston track groove and connected to the power output end of the piston pushing assembly. The piston placement frame has several piston storage slots on the side facing the piston track groove. The piston storage slots correspond one-to-one with the piston track groove and are aligned. The piston in the piston track groove slides into the piston storage slot.

[0027] In one possible implementation of the pre-filled syringe assembly device provided by the present invention, the sleeve assembly assembly includes: A sleeve placement assembly, located outside the sleeve assembly station, is used to place sleeves to be assembled; and A sleeve assembly includes a sleeve gripper and a sleeve drive assembly. The power output end of the sleeve drive assembly is connected to the sleeve gripper to drive the sleeve gripper to grip the push rod, which is equipped with the metering ring and the piston, located at the sleeve assembly station, and press it into the sleeve.

[0028] In one possible implementation of the pre-filled syringe assembly device provided by the present invention, the sleeve gripper is a negative pressure suction cup used to adsorb the top of the push rod and grasp the push rod.

[0029] In one possible implementation of the pre-filled syringe assembly device provided by the present invention, the sleeve assembly assembly further includes: Sleeve assembly bracket, fixed setting; and A sleeve transport assembly is used to transport sleeves to the sleeve placement assembly; The sleeve transport assembly includes: A sleeve feeding rack, connected to a sleeve assembly bracket, is provided with a sleeve feeding track groove, and the sleeve is adapted to slide along the sleeve feeding track groove; and A sleeve vibratory feeder is connected to the sleeve feeding rack and is used to feed sleeves to the sleeve feeding rack.

[0030] In one possible implementation of the pre-filled syringe assembly device provided by the present invention, the sleeve assembly assembly further includes a second positioning component, the second positioning component comprising: Two second positioning brackets are provided with second positioning half holes on opposite sides to form second positioning holes. The second positioning holes are coaxial with the lower sleeve to make the push rod coaxial with the sleeve. The second positioning drive component has its power output end connected to the two second positioning frames, and is used to drive the two second positioning frames to move towards or away from each other.

[0031] In one possible implementation of the pre-filled syringe assembly device provided by the present invention, the sleeve placement assembly includes: A storage turntable is rotatably engaged with the sleeve assembly bracket. The storage turntable has several sleeve placement slots along its circumference. The storage turntable has a loading position and a unloading position on its side along its circumference. The sleeve loading bracket is mounted on the loading position and docks with the sleeve placement slot on the storage turntable located at the loading position. A turntable drive assembly is connected to the sleeve assembly bracket, and its power output end is connected to the storage turntable to drive the storage turntable to rotate intermittently. A retaining ring is arranged around the outside of the storage turntable and is fixedly connected to the sleeve assembly bracket to cooperate with the sleeve placement groove to form a closed groove; the retaining ring has a notch, and the loading position and the unloading position are both located in the notch; The sleeve feeding rack is inclined upward on the side away from the storage turntable.

[0032] In one possible implementation of the pre-filled syringe assembly equipment provided by the present invention, the sleeve transport assembly further includes a sleeve unloading rack, which is located at the unloading position and has an unloading track groove. One end of the sleeve unloading rack is located under the storage turntable to receive the sleeves on the storage turntable, and the other end is inclined downward.

[0033] In one possible implementation of the pre-filled syringe assembly equipment provided by the present invention, the sleeve transport assembly further includes a sleeve stop, which is disposed at the end of the sleeve loading rack. The end of the sleeve stop is adapted to extend into the sleeve or be placed outside the sleeve to prevent the sleeve from moving toward the storage turntable.

[0034] The beneficial effects of the pre-filled syringe assembly equipment provided by this invention are as follows: Compared with the prior art, the pre-filled syringe assembly equipment provided by this invention sets up a metering ring feeding station, a push rod assembly station, a piston assembly station, and a sleeve assembly station around the assembly turntable. The assembly turntable drives the clamping components to circulate through each station, connecting each assembly process in a ring and making the device structure more compact. The metering ring is fixedly clamped by the clamping components and passes through the push rod assembly station, piston assembly station, and sleeve assembly station in sequence to complete the syringe assembly. During the assembly process, it is not necessary to frequently switch the clamping and fixing components and positions, making the production line simpler and effectively reducing the required equipment. Furthermore, at the end of the syringe assembly, the clamping components are emptied, allowing the clamping components to directly enter the next cycle, making the assembly process simpler and further reducing the required equipment. Attached Figure Description

[0035] Figure 1A three-dimensional structural diagram of the pre-filled syringe assembly equipment provided in an embodiment of the present invention. Figure 1 ; Figure 2 for Figure 1 Enlarged view of part A in the image; Figure 3 for Figure 2 Enlarged view of part B in the image; Figure 4 A three-dimensional structural diagram of the pre-filled syringe assembly equipment provided in an embodiment of the present invention. Figure 2 ; Figure 5 for Figure 4 Enlarged view of section C in the image; Figure 6 for Figure 5 Enlarged view of part D in the image; Figure 7 for Figure 4 Enlarged view of part E in the image; Figure 8 A three-dimensional structural diagram of the pre-filled syringe assembly equipment provided in an embodiment of the present invention. Figure 3 ; Figure 9 for Figure 8 Enlarged view of part F in the image; Figure 10 for Figure 8 Enlarged view of part G in the image; Figure 11 for Figure 8 Enlarged view of section H in the image; Figure 12 for Figure 8 Enlarged view of part I in the image; Figure 13 A three-dimensional structural diagram of the pre-filled syringe assembly equipment provided in an embodiment of the present invention. Figure 4 ; Figure 14 for Figure 13 Enlarged view of part J in the image; Figure 15 for Figure 13 Enlarged view of part K in the image; Figure 16 for Figure 13 Enlarged view of part L in the image; Explanation of reference numerals in the attached figures: 0101. Rotating disc; 0102. Fixed frame; 0103. Frame; 0104. Cam divider; 0210 Clamping assembly; 0211 Fixed block; 0212 Movable block; 0213 Guide rod; 0214. Return spring; 0220. Release assembly; 0221. Release cylinder; 0222. Release bracket; 0310. Metering ring assembly bracket; 0321. Metering ring vibration assembly; 0322. Metering ring transport frame; 0323. Metering ring vibratory feeder; 0331. Metering ring placement rack; 0332. Metering ring misalignment drive assembly; 0340, Quantitative ring gripper; 0350, Quantitative ring drive assembly; 0410, First push rod assembly bracket; 0421, Push rod placement bracket; 0422, Push rod pushing drive assembly; 0430, First push rod drive assembly; 0441, Rotary clamping assembly; 0442, Push rod assembly frame; 0443, Push rod buffer frame; 0444, Limit rod; 0445, Buffer spring; 0451. Push rod vibration assembly; 0452. Push rod transport frame; 0453. Push rod vibratory plate; 0461, First positioning frame; 0462, First positioning drive assembly; 0471, First photoelectric sensor; 0472, First sensing block; 0510, Rejection drive assembly; 0520, Rejection gripper; 0610 Piston assembly bracket; 0620 Piston placement bracket; 0631 Push rod pusher; 0632, Piston Pushing Assembly; 0641, Piston Vibration Assembly; 0642, Piston Transport Frame; 0643, Piston Vibratory Disk; 0651, Third Detection Bracket; 0652, Third Photoelectric Sensor; 0710, Second push rod assembly bracket; 0720, Second push rod drive assembly; 0731, Second detection bracket; 0732, Second photoelectric sensor; 0810. Sleeve assembly bracket; 0821. Storage turntable; 0822. Retaining ring; 0831. Sleeve drive assembly; 0832. Sleeve gripper; 0841. Sleeve loading rack; 0842, Sleeve vibratory feeder; 0843, Sleeve unloading frame; 0851, Second positioning frame; 0852, Second positioning drive component; 0860, Sleeve stop. Detailed Implementation

[0036] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0037] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0038] The pre-filled syringe assembly equipment provided by the present invention will now be described.

[0039] like Figures 1 to 16 As shown, the pre-filled syringe assembly equipment includes an assembly turntable, a clamping assembly, a metering loop feeding assembly, a push rod assembly assembly, a first push rod detection assembly, a piston assembly assembly, and a sleeve assembly assembly. The assembly turntable rotates intermittently and has metering loop feeding stations, push rod assembly stations, piston assembly stations, and sleeve assembly stations circumferentially on the turntable. The clamping assembly is fixedly connected to the assembly turntable and is used to clamp the metering loop. The assembly turntable drives the clamping assembly to clamp the metering loop sequentially through the metering loop feeding station, the push rod assembly station, the piston assembly station, and the sleeve assembly station, completing the assembly of the metering loop. The assembly includes feeding, and assembly of the push rod, piston, and sleeve; a metering ring feeding assembly is located at the metering ring feeding station to place the metering ring into the clamping assembly located at the metering ring feeding station; a push rod assembly assembly is located at the push rod assembly station to install the push rod into the metering ring located in the clamping assembly located at the push rod assembly station; assembly is completed to the preset position where the metering ring is installed on the push rod; a piston assembly assembly is located at the piston assembly station to install the piston onto the push rod located on the clamping assembly located at the piston assembly station; a sleeve assembly assembly is located at the sleeve assembly station to remove the push rod located at the sleeve assembly station from the clamping assembly and install it into the sleeve.

[0040] The beneficial effects of the pre-filled syringe assembly equipment provided by the present invention are as follows: Compared with the prior art, the pre-filled syringe assembly equipment provided by the present invention does not require frequent switching of clamping and fixing components and positions during the assembly process, making the production line simpler and effectively reducing the required equipment; and at the end of the syringe assembly, the clamping component 0210 is emptied, allowing the clamping component 0210 to directly enter the next cycle, making the assembly process simpler and further reducing the required equipment.

[0041] like Figure 1 As shown, in a specific embodiment of the pre-filled syringe assembly equipment provided in this invention, the assembly turntable includes a rotating disc body 0101 and a fixed frame 0102. The rotating disc body 0101 is intermittently rotated, and the fixed frame 0102 is disposed on the upper side of the rotating disc body 0101 and spaced apart from the rotating disc body 0101.

[0042] like Figure 1 and Figure 4As shown, in a specific embodiment of the pre-filled syringe assembly equipment provided in this invention, the assembly turntable further includes a frame 0103 and a cam divider 0104. The frame 0103 is fixedly installed; the cam divider 0104 is connected to the frame 0103. The cam divider 0104 is provided with an inner ring and an outer ring. The inner ring is fixedly installed, and the outer ring is used to output power.

[0043] The rotating disk 0101 is connected to the inner ring of the cam divider 0104, and the fixed frame 0102 is connected to the outer ring of the cam divider 0104.

[0044] It should be noted that the cam divider 0104 is the existing desktop cam divider 0104.

[0045] like Figure 1 and Figure 2 As shown, in a specific embodiment of the pre-filled syringe assembly device provided in this invention, the clamping assembly includes a plurality of clamping components 0210 and at least two release components 0220. The plurality of clamping components 0210 are arranged at intervals along the circumference of the assembly turntable and are connected to the rotating disk body 0101. The clamping component 0210 has one, two or more elastic clamping positions, which are used to clamp the metering ring.

[0046] Specifically, in this embodiment, the clamping component 0210 is provided with two elastic clamping positions to simultaneously complete the assembly of the two syringes and ensure assembly efficiency.

[0047] It should be noted that the fixing bracket 0102 can be a disc or a frame structure, as long as it meets the installation requirements of the release component 0220.

[0048] When the metering ring is placed into the elastic clamping position or when the push rod with the metering ring is moved out of the elastic clamping position, the metering ring is released by the release assembly 0220 to facilitate its removal.

[0049] like Figure 1 and Figure 2As shown, in a specific embodiment of the pre-filled syringe assembly device provided in this invention, the clamping assembly 0210 includes a fixed block 0211, a movable block 0212, several guide rods 0213, and several return springs 0214. The fixed block 0211 is fixed on the assembly turntable, and has several first half-holes on one side. First half-grooves are provided on both sides of the first half-holes, and the first half-grooves communicate with the first half-holes. The movable block 0212 is located on one side of the fixed block 0211, and has several second half-holes on the side facing the fixed block 0211. Second half-grooves are provided on both sides of the second half-holes, and the second half-holes correspond one-to-one with and are aligned with the first half-holes to form an elastic clamping position. The two half-grooves correspond one-to-one with the first half-grooves and are aligned to form a clearance groove, which is used to avoid various grippers so that the grippers can clamp the metering ring; a number of guide rods 0213 are arranged parallel and spaced on the side of the movable block 0212 facing the fixed block 0211. Each guide rod 0213 passes through the fixed block 0211 and slides with the fixed block 0211; one end of the guide rod 0213 is connected to the movable block 0212, and the other end is provided with a stop; a number of return springs 0214 are arranged on the side of the fixed block 0211 facing away from the movable block 0212, corresponding one-to-one with the guide rods 0213 and sleeved on the guide rods 0213. One end of the return spring 0214 abuts against the fixed block 0211, and the other end abuts against the stop.

[0050] Specifically, the fixed block 0211 has two first half holes, and the movable block 0212 has two corresponding second half holes; the movable block 0212 has two guide rods 0213 on the side facing the fixed block 0211, and two return springs 0214 are respectively sleeved on the two guide rods 0213 to effectively limit the sliding direction of the movable block 0212.

[0051] The release assembly 0220 includes a release cylinder 0221 and a release frame 0222. The release cylinder 0221 is fixedly connected to the fixed frame 0102. The release frame 0222 is connected to the power output end of the release cylinder 0221 and is used to push the guide rod 0213.

[0052] It should be noted that the release cylinder 0221 is an existing cylinder, but it can also be replaced by hydraulic or electric actuators. The release frame 0222 has a push rod or a single flat plate on the side facing the clamping assembly 0210 that corresponds one-to-one with the guide rod 0213. When the clamping assembly 0210 needs to release the metering ring, the release cylinder 0221 drives the release frame 0222 to move towards the clamping assembly 0210, pushing the guide rod 0213, so that the movable block 0212 moves away from the fixed block 0211, releasing the metering ring; afterwards, the release cylinder 0221 drives the release frame 0222 to reset, and the movable block 0212 automatically resets under the action of the reset spring 0214.

[0053] like Figure 2 and Figure 3As shown, in a specific embodiment of the pre-filled syringe assembly equipment provided in this invention, the metering ring feeding assembly includes a metering ring placement assembly and a metering ring assembly assembly. The metering ring placement assembly is used to place the metering ring to be assembled. The metering ring assembly assembly includes a metering ring gripper 0340 and a metering ring drive assembly 0350. The power output end of the metering ring drive assembly 0350 is connected to the metering ring gripper 0340 and is used to drive the metering ring gripper 0340 to grab the metering ring from the metering ring placement assembly and place it into the clamping assembly located at the metering ring feeding station.

[0054] It should be noted that the quantitative ring gripper 0340 is an existing two-finger cylinder gripper, which can also be replaced by an electric gripper or a hydraulic gripper that can clamp the quantitative ring, and a claw matching the quantitative ring direction is installed at the end to facilitate gripping the quantitative ring.

[0055] like Figures 1 to 3 As shown, in a specific embodiment of the pre-filled syringe assembly equipment provided in this invention, the metering ring feeding assembly further includes a metering ring assembly bracket 0310 and a metering ring transport assembly. The metering ring assembly bracket 0310 is fixedly connected to the frame 0103; the metering ring transport assembly is used to transport metering rings to the metering ring placement assembly.

[0056] The quantitative ring transport assembly includes a quantitative ring vibration assembly 0321, a quantitative ring transport frame 0322, and a quantitative ring vibration disk 0323. The quantitative ring vibration assembly 0321 is connected to the quantitative ring assembly bracket 0310. The quantitative ring transport frame 0322 is connected to the vibration assembly and is provided with several quantitative ring track grooves. The quantitative rings are suitable for sliding along the quantitative ring track grooves. The quantitative ring vibration assembly 0321 is used to drive the quantitative ring transport frame 0322 to vibrate. The quantitative ring vibration disk 0323 is docked with the quantitative ring transport frame 0322 and is used to transport the quantitative rings to the quantitative ring transport frame 0322.

[0057] Specifically, the quantitative ring vibration assembly 0321 is an existing direct vibration feeder. The bottom of the direct vibration feeder is connected to the quantitative ring assembly bracket 0310, and the top is connected to the quantitative ring transport frame 0322. It is used to vibrate the quantitative ring transport frame 0322, thereby driving the quantitative rings forward. The quantitative ring vibration plate 0323 is an existing vibration plate that can automatically sort the quantitative rings and deliver them to the quantitative ring transport frame 0322. A 2-5mm gap is provided between the quantitative ring vibration plate 0323 and the quantitative ring transport frame 0322 to avoid mutual interference of vibrations. The quantitative ring transport frame 0322 has two quantitative ring track slots.

[0058] like Figure 3As shown, in a specific embodiment of the pre-filled syringe assembly equipment provided in this invention, the metering ring placement assembly includes a metering ring placement frame 0331 and a metering ring misalignment drive assembly 0332. The metering ring placement frame 0331 is slidably engaged with the metering ring assembly bracket 0310 and is located at the end of the metering ring track groove, having the freedom to slide in a direction perpendicular to the conveying direction at the end of the metering ring track groove. The metering ring placement frame 0331 has a plurality of metering ring storage slots on the side facing the metering ring track groove. The metering ring storage slots correspond one-to-one with the metering ring track grooves. When the metering ring storage slots are aligned with the metering ring track grooves, the metering rings in the metering ring track grooves slide into the metering ring storage slots. The metering ring misalignment drive assembly 0332 is connected to the metering ring assembly bracket 0310, and its power output end is connected to the metering ring placement frame 0331 to drive the metering ring placement frame 0331 to slide along the metering ring assembly bracket 0310.

[0059] It should be noted that the quantitative ring placement rack 0331 has two quantitative ring storage slots. The quantitative ring misalignment drive component 0332 is a cylinder, but it can also be a hydraulic cylinder, electric actuator, or other devices. The quantitative ring placement rack 0331 slides into the quantitative ring assembly bracket 0310 via a slide rail. After the quantitative ring slides into the quantitative ring storage slot on the quantitative ring placement rack 0331, the quantitative ring misalignment drive component 0332 drives the quantitative ring storage slot on the quantitative ring placement rack 0331 to misalign with the quantitative ring track slot, preventing the quantitative ring in the quantitative ring storage slot from being squeezed by the quantitative ring in the quantitative ring track slot, which could lead to a failure in grasping.

[0060] like Figures 4 to 7 , Figure 9 As shown, in a specific embodiment of the pre-filled syringe assembly device provided in this invention, the push rod assembly assembly includes a first push rod assembly bracket 0410, a push rod placement assembly, a first push rod drive assembly 0430, and a push rod assembly assembly. The first push rod assembly bracket 0410 is fixedly installed. The push rod placement assembly is located outside the push rod assembly station and is used to store the push rod to be assembled. The first push rod drive assembly 0430 is connected to the first push rod assembly bracket 0410. The push rod assembly assembly is connected to the power output end of the first push rod drive assembly 0430 and is used to move between the push rod placement assembly and the metering ring located at the push rod assembly station under the drive of the first push rod drive assembly 0430. The push rod assembly assembly is provided with a rotating clamping assembly 0441 to clamp the push rod and drive the push rod to rotate.

[0061] It should be noted that the rotary gripper 0441 consists of an existing rotary gripper and a motor assembly. The rotary gripper is an existing 360-degree infinitely rotating pneumatic gripper with a claw at the end that matches the push rod to grip the push rod. The motor assembly is an existing ordinary motor, stepper motor, or servo motor used to drive the rotary gripper to rotate.

[0062] like Figure 4 and Figure 5 As shown, in a specific embodiment of the pre-filled syringe assembly equipment provided in this invention, the push rod assembly assembly further includes a push rod transport assembly; the push rod transport assembly includes a push rod vibration assembly 0451, a push rod transport frame 0452, and a push rod vibration disk 0453. The push rod vibration assembly 0451 is connected to the first push rod assembly bracket 0410; the push rod transport frame 0452 is connected to the vibration assembly, and the push rod transport frame 0452 is provided with a plurality of push rod track grooves. The upper end of the push rod is locked in the push rod track groove and is suitable for sliding along the push rod track groove. The push rod vibration assembly 0451 is used to drive the push rod transport frame 0452 to vibrate; the push rod vibration disk 0453 is docked with the push rod transport frame 0452 and is used to transport the push rod to the push rod transport frame 0452.

[0063] It should be noted that the push rod vibration assembly 0451 is an existing linear vibratory feeder. The bottom of the linear vibratory feeder is connected to the push rod assembly bracket, and the top is connected to the push rod transport frame 0452. It is used to vibrate the push rod transport frame 0452, thereby driving the push rod forward. The push rod vibratory plate 0453 is an existing vibratory plate that can automatically sort the push rods and feed them onto the push rod transport frame 0452. A 2-5mm gap is provided between the push rod vibratory plate 0453 and the push rod transport frame 0452 to avoid mutual vibration interference. The push rod transport frame 0452 has two push rod track slots. The push rod track slots are T-shaped, matching the shape of the push rod top.

[0064] like Figure 4 and Figure 7 As shown, in a specific embodiment of the pre-filled syringe assembly device provided in this invention, the push rod placement assembly includes a push rod placement frame 0421 and a push rod pushing drive assembly 0422. The push rod placement frame 0421 is located at the end of the push rod track groove and is fixed to the first push rod assembly bracket 0410. The push rod placement frame 0421 has a plurality of push rod storage slots on the side facing the push rod track groove. The push rod storage slots correspond one-to-one with the push rod track grooves and are aligned. The push rods in the push rod track grooves slide into the push rod storage slots. The push rod pushing drive assembly 0422 is located on the lower side of the push rod placement frame 0421 and is used to push the push rods in the push rod placement frame 0421 upward.

[0065] Specifically, the push rod push drive assembly 0422 is a cylinder, but it can also be a hydraulic cylinder, an electric push rod, etc. When there is one push rod storage slot, the push rod can be directly pushed by the cylinder. When there are two or more push rod storage slots, a top plate needs to be installed at the end of the cylinder to lift all the push rods at the same time, so as to facilitate the rotation clamping assembly 0441 to clamp the push rod.

[0066] like Figure 5 and Figure 6As shown, in a specific embodiment of the pre-filled syringe assembly device provided in this invention, the push rod assembly assembly further includes a push rod assembly frame 0442, a push rod buffer frame 0443, and several buffer components. The push rod assembly frame 0442 is connected to the first push rod drive assembly 0430 or the power output end of the first push rod drive assembly 0430, and is used to move under the drive of the first push rod drive assembly 0430. The push rod buffer frame 0443 is slidably engaged with the push rod assembly frame 0442, and has a relative position to the push rod assembly frame. 0442 has the freedom to slide up and down; several buffer components are arranged between the push rod assembly frame 0442 and the push rod buffer frame 0443; the buffer components include a limiting rod 0444 and a buffer spring 0445, the limiting rod 0444 passes through the push rod buffer frame 0443 and is connected to the push rod assembly frame 0442 at both ends; the buffer spring 0445 is sleeved on the limiting rod 0444 and abuts against the push rod assembly frame 0442 and the push rod buffer frame 0443 at both ends respectively; wherein, the rotating clamping component 0441 is connected to the push rod buffer frame 0443.

[0067] Specifically, the push rod assembly 0442 is equipped with two buffer components. Furthermore, such as Figure 6 , Figure 9 and Figure 11 As shown, in a specific embodiment of the pre-filled syringe assembly device provided in this invention, the push rod assembly assembly further includes a first positioning assembly. The first positioning assembly includes two first positioning frames 0461 and a first positioning drive assembly 0462. Each of the two first positioning frames 0461 has a positioning half-hole on its opposite side to form a positioning hole. The positioning hole is coaxial with the lower metering ring to make the push rod coaxial with the metering ring. The power output end of the first positioning drive assembly 0462 is connected to the two first positioning frames 0461 to drive the two first positioning frames 0461 to move towards or away from each other.

[0068] Specifically, the first positioning drive component 0462 is a pneumatic finger cylinder, or it can be replaced by two cylinders, a hydraulic cylinder, an electric gripper, or other devices that can drive the two first positioning frames 0461 to move in opposite directions or away from each other, so as to make the push rod coaxial with the metering ring, reduce the probability of the push rod being screwed into the metering ring, and ensure assembly efficiency.

[0069] like Figure 5 and Figure 10 As shown, in a specific embodiment of the pre-filled syringe assembly device provided in this invention, the push rod assembly assembly includes two push rod assembly assemblies, and also includes a second push rod assembly bracket 0710 and a second push rod drive assembly 0720. The second push rod assembly bracket 0710 is fixedly disposed between the piston assembly station and the sleeve assembly station; the second push rod drive assembly 0720 is connected to the second push rod assembly bracket 0710.

[0070] The two push rod assembly components are respectively connected to the power output ends of the first push rod drive assembly 0430 and the second push rod drive assembly 0720; the second push rod drive assembly 0720 is used to drive the push rod assembly components to move up and down.

[0071] It should be noted that by setting up two push rod assembly components, the metering ring is assembled to the top of the push rod in two separate steps at two different positions. This allows the push rod to be turned simultaneously at both positions, effectively reducing assembly time and improving assembly efficiency.

[0072] like Figure 8 and Figure 10 As shown, in a specific embodiment of the pre-filled syringe assembly equipment provided in this invention, a first push rod detection component and a rejection component are also included. The first push rod detection component is located at the push rod assembly station and is used to detect whether the push rod is assembled in place. A push rod rejection station is provided between the push rod assembly station and the piston assembly station. The rejection component is located at the push rod rejection station and is used to reject push rods that are not assembled in place. The clamping component includes three release components 0220, which are respectively located at the metering ring feeding station, the push rod rejection station, and the sleeve assembly station.

[0073] like Figure 6 As shown, in a specific embodiment of the pre-filled syringe assembly equipment provided in this invention, the first push rod detection component includes a first photoelectric sensor 0471 and a first sensing block 0472. The first photoelectric sensor 0471 is fixedly connected to the push rod assembly frame 0442; the first sensing block 0472 is fixedly connected to the push rod buffer frame 0443; the rejection component includes a rejection gripper 0520 and a rejection drive component 0510. The rejection gripper 0520 is used to hold the push rod; the rejection drive component 0510 is used to drive the rejection gripper 0520 to move.

[0074] It should be noted that, from the assembly stage to the preset position of the metering ring on the push rod, if the first push rod detection component does not detect that the metering ring is not assembled into the preset position of the push rod within a preset time, it is considered that the push rod is not accurately screwed into the metering ring. When moving to the push rod rejection station, the rejection drive component 0510 drives the rejection gripper 0520 to clamp the push rod that is not accurately screwed into the metering ring. The release component 0220 controls the clamping component 0210 to release the metering ring. The rejection drive component 0510 drives the rejection gripper 0520 that is clamping the push rod to leave the clamping component 0210 and release the push rod, thus rejecting the push rod to ensure the quality of the finished product.

[0075] The 0520 gripper can be replaced by an existing two-finger cylinder gripper, or by an electric gripper or hydraulic gripper that can clamp the push rod. A claw matching the push rod can be installed at the end to facilitate clamping the push rod.

[0076] Specifically, the preset time is set based on experience and actual conditions. In this embodiment, the preset time is 1 second; the preset position refers to the middle of the push rod.

[0077] The push rod is not screwed into the metering ring accurately. Usually, the external thread on the push rod and the internal thread on the metering ring are misaligned, causing the metering ring to be screwed into the push rod only a short distance.

[0078] like Figure 13 and Figure 16 As shown, in a specific embodiment of the pre-filled syringe assembly device provided in this invention, the push rod assembly assembly further includes a second push rod detection assembly. The second push rod detection assembly is located between the second push rod assembly bracket 0710 and the sleeve assembly assembly, and is used to detect whether the push rod is properly assembled. Here, "properly assembled" means that the metering ring is assembled to the top of the push rod.

[0079] Specifically, the second push rod detection assembly includes a second detection bracket 0731 and a second photoelectric sensor 0732. The second detection bracket 0731 is fixedly connected to the frame 0103; the second photoelectric sensor 0732 is located on the upper side of the push rod and is connected to the second detection bracket 0731.

[0080] It should be noted that the second photoelectric sensor 0732 determines whether the metering ring is screwed to the top of the push rod by detecting the distance between itself and the top of the push rod.

[0081] During assembly, the first push rod drive assembly 0430 drives the rotary clamping assembly 0441 to move, making the push rod coaxial with the metering ring. Then, the first push rod drive assembly 0430 drives the rotary clamping assembly 0441 to move downward, the push rod presses against the metering ring, and the buffer spring 0445 is compressed, creating a certain pressure between the push rod and the metering ring. The rotary clamping assembly 0441 drives the push rod to rotate, screwing the push rod into the metering ring until the metering ring is in the middle of the push rod. At this time, the first sensing block 0472 blocks the first photoelectric sensor 0471, which is detected by the first photoelectric sensor 0471, indicating that the metering ring is assembled in place. Then, the rotary clamping assembly 0441 stops rotating, all components reset, and the rotating disk 0101 moves it to the piston assembly station. At the same time, if the first photoelectric sensor 0471 does not sense the first sensing block 0472 within a preset time, it is considered that the push rod is not correctly screwed into the metering ring, and the push rod is rejected when it moves to the rejection station.

[0082] like Figure 10 , Figure 13 and Figure 14As shown, in a specific embodiment of the pre-filled syringe assembly equipment provided in this invention, the piston assembly assembly includes a piston placement rack 0620 and a piston assembly assembly. The piston placement rack 0620 is located outside the piston assembly station and is used to store the piston to be assembled. The piston assembly assembly includes a push rod pusher 0631 and a piston pusher assembly 0632. The push rod pusher 0631 is located on the upper side of the assembly turntable and is adapted to abut against the top of the push rod to press the push rod and prevent the push rod from moving upward when assembling the piston. The piston pusher assembly 0632 is located on the lower side of the piston placement rack 0620 and is used to push the piston placement assembly upward.

[0083] It should be noted that the push rod pusher 0631 and the piston pusher assembly 0632 are cylinders, but they can also be hydraulic cylinders, electric push rods, or other devices.

[0084] like Figure 14 As shown, in a specific embodiment of the pre-filled syringe assembly equipment provided in this invention, a piston detection assembly is further included, which is disposed between the piston assembly station and the sleeve assembly station. The piston detection assembly includes a third detection bracket 0651 and a third photoelectric sensor 0652. The third detection bracket 0651 is fixedly disposed, and the third photoelectric sensor 0652 is disposed on the lower side of the assembly turntable and connected to the third detection bracket to detect whether the piston is installed in the lower end of the push rod.

[0085] It should be noted that when the piston is installed on the lower end of the push rod, the piston will block the third photoelectric sensor 0652. If the piston is not installed on the lower end of the push rod, the piston cannot block the third photoelectric sensor 0652. At this time, the third photoelectric sensor 0652 will determine that the piston is not installed on the push rod, and then control the alarm device to sound an alarm.

[0086] like Figure 14 As shown, in a specific embodiment of the pre-filled syringe assembly device provided in this invention, the piston assembly assembly further includes a piston assembly bracket 0610 and a piston transport assembly, wherein the piston assembly bracket 0610 is fixedly disposed.

[0087] The piston transport assembly includes a piston vibration assembly 0641, a piston transport frame 0642, and a piston vibration disk 0643. The piston vibration assembly 0641 is connected to the piston assembly bracket 0610. The piston transport frame 0642 is connected to the vibration assembly and has several piston track grooves. The piston is adapted to slide along the piston track grooves. The piston vibration assembly 0641 is used to drive the piston transport frame 0642 to vibrate. The piston vibration disk 0643 is docked with the piston transport frame 0642 and is used to transport the piston to the piston transport frame 0642.

[0088] The piston placement rack 0620 is located at the end of the piston track groove and is connected to the power output end of the piston pushing assembly 0632. The piston placement rack 0620 has several piston storage slots on the side facing the piston track groove. The piston storage slots correspond to and are aligned with the piston track grooves one by one, and the pistons in the piston track grooves slide into the piston storage slots.

[0089] Specifically, the piston vibration assembly 0641 is an existing linear vibratory feeder. The bottom of the feeder is connected to the piston assembly bracket 0610, and the top is connected to the piston transport frame 0642. It is used to vibrate the piston transport frame 0642, thereby driving the piston forward. The piston vibratory disc 0643 is an existing vibratory disc that automatically manages the pistons and delivers them to the piston transport frame 0642. A 2-5mm gap is provided between the piston vibratory disc 0643 and the piston transport frame 0642 to avoid mutual vibration interference. The piston transport frame 0642 has two piston track grooves.

[0090] like Figure 12 and Figure 15 As shown, in a specific embodiment of the pre-filled syringe assembly equipment provided in this invention, the sleeve assembly assembly includes a sleeve placement assembly and a sleeve assembly assembly. The sleeve placement assembly is located outside the sleeve assembly station and is used to place the sleeve to be assembled. The sleeve assembly assembly includes a sleeve gripper 0832 and a sleeve drive assembly 0831. The power output end of the sleeve drive assembly 0831 is connected to the sleeve gripper 0832 and is used to drive the sleeve gripper 0832 to grab the push rod equipped with a metering ring and a piston from the sleeve assembly station and press it into the sleeve.

[0091] Specifically, the sleeve gripper 0832 corresponds one-to-one with the elastic clamping position on the clamping assembly 0210. In this embodiment, two sleeve grippers 0832 are provided to complete the assembly of two sleeves at one time.

[0092] Furthermore, more flexible clamping positions can be set in the clamping assembly 0210, and the same number of sleeve grippers 0832 can be set accordingly to complete the assembly of multiple sleeves at one time.

[0093] like Figure 8 and Figure 12 As shown, in a specific embodiment of the pre-filled syringe assembly equipment provided in this invention, the sleeve assembly assembly further includes a sleeve assembly bracket 0810 and a sleeve transport assembly. The sleeve assembly bracket 0810 is fixedly installed; the sleeve transport assembly is used to transport the sleeve to the sleeve placement assembly.

[0094] The sleeve transport assembly includes a sleeve loading rack 0841 and a sleeve vibrating plate 0842. The sleeve loading rack 0841 is connected to the sleeve assembly bracket 0810. The sleeve loading rack 0841 is provided with a sleeve loading track groove, and the sleeve is adapted to slide along the sleeve loading track groove. The sleeve vibrating plate 0842 is connected to the sleeve loading rack 0841 and is used to transport the sleeve to the sleeve loading rack 0841.

[0095] It should be noted that the sleeve loading rack 0841 has two parallel and spaced plates or rods. The gap between the plates or rods is the sleeve loading track groove. The sleeve body is placed in the sleeve loading track groove, and the wing plates on both sides of the top of the sleeve rest on the sleeve loading rack 0841. The sleeve vibratory feeder 0842 is an existing vibratory feeder that can automatically sort the sleeves and send them to the sleeve transport rack.

[0096] like Figure 12 As shown, in a specific embodiment of the pre-filled syringe assembly equipment provided in this invention, the sleeve assembly assembly further includes a second positioning assembly. The second positioning assembly includes two second positioning frames 0851 and a second positioning drive assembly 0852. Each of the two second positioning frames 0851 has a second positioning half-hole on its opposite side, forming a second positioning hole. The second positioning hole is coaxial with the lower sleeve, so as to make the push rod coaxial with the sleeve. The power output end of the second positioning drive assembly 0852 is connected to the two second positioning frames 0851, so as to drive the two second positioning frames 0851 to move towards or away from each other.

[0097] Specifically, the second positioning frame 0851 is provided with a second positioning hole, and each second positioning component positions a push rod; the second positioning drive component 0852 is a 180-degree pneumatic finger cylinder, also known as a 180-degree opening and closing gripper, or it can be replaced by a pneumatic finger cylinder, two cylinders, a hydraulic cylinder, an electric gripper, or other devices that can drive the two second positioning frames 0851 to move towards or away from each other.

[0098] When multiple push rods are assembled at the same time, multiple second positioning components can be set to position the push rods respectively; multiple second positioning half holes can also be set on the second positioning frame 0851 to position multiple push rods.

[0099] like Figure 12As shown, in a specific embodiment of the pre-filled syringe assembly equipment provided in this invention, the sleeve placement assembly includes a storage turntable 0821, a turntable drive assembly, and a retaining ring 0822. The storage turntable 0821 is rotatably engaged with the sleeve assembly bracket 0810. The storage turntable 0821 has a plurality of sleeve placement slots along its circumference. The storage turntable 0821 has a loading position and a unloading position on its side along its circumference. The sleeve loading rack 0841 is located at the loading position and is connected to the sleeve placement slot located at the loading position on the storage turntable 0821. The turntable drive assembly is connected to the sleeve assembly bracket 0810, and its power output end is connected to the storage turntable 0821 to drive the storage turntable 0821 to rotate intermittently. The retaining ring 0822 is arranged around the outside of the storage turntable 0821 and is fixedly connected to the sleeve assembly bracket 0810 to cooperate with the sleeve placement slots to form a closed slot. The retaining ring 0822 has a notch, and the loading position and the unloading position are both located in the notch. Among them, the sleeve feeding rack 0841 is set at an upward angle on the side away from the storage turntable 0821.

[0100] Specifically, the sleeve placement groove on the storage turntable 0821 is a U-shaped groove, which is sealed by the retaining ring 0822.

[0101] like Figure 12 As shown, in a specific embodiment of the pre-filled syringe assembly equipment provided in this invention, the sleeve transport assembly further includes a sleeve unloading rack 0843. The sleeve unloading rack 0843 is located at the unloading position and is provided with an unloading track groove. One end of the sleeve unloading rack 0843 is located on the lower side of the storage turntable 0821 to receive the sleeves on the storage turntable 0821, and the other end is inclined downward.

[0102] It should be noted that during operation, the sleeve is conveyed to the sleeve loading rack 0841 by the vibratory feeder, and slides along the sleeve loading rack 0841 to the loading position on the side of the storage turntable 0821. Whenever the sleeve placement slot aligns with the loading track slot, the sleeve automatically slides into the sleeve placement slot and rotates with the storage turntable 0821 to the sleeve assembly station. During this process, the sleeve drive assembly 0831 drives the sleeve gripper 0832 to grab the push rod in the clamping assembly 0210 and move it to the upper side of the sleeve at the sleeve assembly station. Then, the push rod is pressed into the sleeve to complete the assembly of the syringe. Then, the storage turntable 0821 continues to rotate, bringing the assembled syringe to the unloading position. The syringe slides along the unloading track slot to the next process.

[0103] like Figure 12 As shown, in a specific embodiment of the pre-filled syringe assembly equipment provided in this invention, the sleeve transport assembly further includes a sleeve stop 0860. The sleeve stop 0860 is located at the end of the sleeve loading rack 0841. The end of the sleeve stop 0860 is adapted to extend into the sleeve or be placed on the outside of the sleeve to prevent the sleeve from moving toward the storage turntable 0821.

[0104] Specifically, the sleeve stop 0860 is a cylinder, but it can also be a hydraulic cylinder, electric actuator, or other device capable of outputting axial displacement. When it is necessary to stop the sleeve from moving downward, the cylinder piston rod extends to block the sleeve.

[0105] like Figure 15 As shown, in a specific embodiment of the pre-filled syringe assembly equipment provided in this invention, the sleeve gripper 0832 is a negative pressure suction cup used to adsorb the top of the push rod and grasp the push rod.

[0106] It should be noted that the negative pressure suction cup is an existing device used to grip the top of the push rod by using negative pressure to pull it out.

[0107] In addition, the sleeve gripper 0832 can also be an existing pneumatic gripper, electric gripper, or other device that can grip the top of the push rod.

[0108] It should be noted that the quantitative ring drive assembly 0350, the rejection drive assembly 0510, the first push rod drive assembly 0430, and the sleeve drive assembly 0831 all include a fixed mounting bracket, a first sliding bracket, a second sliding bracket, a lateral drive assembly, and a longitudinal drive assembly. The first sliding bracket is slidably engaged with the fixed mounting bracket and has a lateral sliding degree of freedom. The second sliding bracket is slidably engaged with the first sliding bracket and has a vertical sliding degree of freedom relative to the first sliding bracket. The lateral drive assembly is fixedly connected to the fixed mounting bracket, and its power output end is connected to the first sliding bracket to drive the first sliding bracket to move laterally. The longitudinal drive assembly is fixedly connected to the first sliding bracket, and its power output end is connected to the second sliding bracket to drive the second sliding bracket to slide vertically relative to the first sliding bracket.

[0109] The second sliding frame is the power output end of the quantitative ring drive assembly 0350, the rejection drive assembly 0510, the first push rod drive assembly 0430, and the sleeve drive assembly 0831; the transverse drive assembly and the longitudinal drive assembly are cylinders, but can also be hydraulic cylinders, electric push rods, etc.

[0110] In addition, the quantitative ring drive assembly 0350, the rejection drive assembly 0510, the first push rod drive assembly 0430, and the sleeve drive assembly 0831 can also be used for existing robotic arms.

[0111] Meanwhile, a method for assembling a pre-filled syringe based on the above-mentioned assembly equipment is provided, comprising the following steps: S01, the quantitative ring is conveyed to the quantitative ring loading station, and the quantitative ring is loaded into the clamping assembly at the quantitative ring loading station; S02, the push rod is transported to the push rod assembly station, and the assembly turntable drives the clamping assembly with the metering ring to move to the push rod assembly station, and the push rod is installed into the metering ring; S03, the sleeve is transported to the sleeve assembly station, and the assembly turntable drives the push rod and quantitative ring clamping assembly to move to the piston assembly station, and the piston is installed on the push rod; S04, the assembly turntable drives the clamping assembly containing the piston, push rod and metering ring to the sleeve assembly station, moves the push rod containing the piston and metering ring out of the clamping assembly and pushes it into the sleeve, completing the assembly of a syringe; S05, the assembly turntable drives the empty clamping components to the quantitative ring feeding station, and so on.

[0112] It should be noted that the assembly turntable is equipped with multiple clamping components to enable the various processes to be carried out simultaneously, thereby improving assembly efficiency; one, two or more metering rings are clamped side by side on the clamping components in sequence; and the assembly of push rods and pistons is completed simultaneously.

[0113] Step S02 includes: S02.1, the push rod is transported to the push rod assembly station, and the assembly turntable drives the clamping assembly equipped with the metering ring to move to the push rod assembly station; S02.2, clamp the push rod to the upper side of the metering ring, making it coaxial with the metering ring; S02.3, Press down and rotate the push rod to screw it into the metering ring; S02.4, Check whether the metering ring is screwed to the preset position of the push rod, and remove the push rods that are not screwed to the preset position.

[0114] It should be noted that after the metering ring is screwed to the preset position of the push rod, the push rod is stopped from rotating; if the metering ring is not screwed to the preset position of the push rod within the preset time, it is considered that the push rod is not accurately screwed into the metering ring, and then the push rod is rejected to ensure the quality of the finished product.

[0115] Specifically, the preset time is set based on experience and actual conditions. In this embodiment, the preset time is 1 second.

[0116] Step S03 includes: S03.1, The piston is transported to the piston assembly station, and the assembly turntable drives the push rod and metering ring clamping assembly to move to the piston assembly station; S03.2, press the top of the push rod against it to prevent it from moving, and push the piston from the underside of the push rod to the bottom of the push rod; S03.3, detect whether the piston is inserted into the bottom of the push rod, and alarm when the piston is not inserted into the bottom of the push rod to ensure the quality of the finished product.

[0117] Furthermore, in step S02.3, the metering ring is screwed to the middle of the push rod; Step S03 also includes: S03.4, rotate forward at the preset angle, press down and rotate the push rod again to screw the metering ring to the top of the push rod.

[0118] It should be noted that by screwing the metering ring to the top of the push rod in two separate positions, the push rod can be turned simultaneously in both positions, effectively reducing assembly time and improving assembly efficiency.

[0119] Furthermore, step S03 also includes: S03.5, the detection metering ring is screwed to the top of the push rod, and an alarm is triggered when the detection metering ring is not screwed to the top of the push rod, so as to effectively ensure product quality.

[0120] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pre-filled syringe assembly device, characterized in that, include: An assembly turntable is configured to rotate intermittently. The assembly turntable is circumferentially equipped with a quantitative ring feeding station, a push rod assembly station, a piston assembly station, and a sleeve assembly station. A clamping assembly is fixedly connected to the assembly turntable and is used to clamp a metering ring. The assembly turntable drives the clamping assembly to clamp the metering ring sequentially through the metering ring feeding station, the push rod assembly station, the piston assembly station and the sleeve assembly station, thereby completing the feeding of the metering ring and the assembly of the push rod, piston and sleeve. A metering ring feeding assembly is provided at the metering ring feeding station and is used to place the metering ring into the clamping assembly located at the metering ring feeding station; A push rod assembly assembly is provided at the push rod assembly station and is used to insert the push rod into the metering ring located in the clamping assembly at the push rod assembly station; A piston assembly assembly, located at the piston assembly station, is used to load the piston onto a push rod located on the clamping assembly at the piston assembly station; and A sleeve assembly assembly is provided at the sleeve assembly station and is used to remove the push rod located at the sleeve assembly station from the clamping assembly and insert it into the sleeve. The clamping assembly (0210) includes: The fixing block (0211) is fixed on the assembly turntable. It has several first half holes on one side and first half grooves on both sides of the first half holes. The first half grooves are connected to the first half holes. The movable block (0212) is located on one side of the fixed block (0211). The movable block (0212) has a plurality of second half holes on the side facing the fixed block (0211). The second half holes have second half grooves on both sides. The second half holes correspond to and are aligned with the first half holes to form an elastic clamping position. The second half grooves correspond to and are aligned with the first half grooves to form a clearance groove. A plurality of guide rods (0213) are arranged parallel to each other on the side of the movable block (0212) facing the fixed block (0211). Each guide rod (0213) passes through the fixed block (0211) and slides in cooperation with the fixed block (0211). One end of each guide rod (0213) is connected to the movable block (0212), and the other end is provided with a stop. A number of return springs (0214) are provided on the side of the fixed block (0211) facing away from the movable block (0212), corresponding one-to-one with the guide rod (0213) and sleeved on the guide rod (0213). One end of the return spring (0214) abuts against the fixed block (0211), and the other end abuts against the stop block. The push rod assembly includes: The first push rod assembly bracket (0410) is fixedly installed; A push rod placement assembly is located outside the push rod assembly station and is used to store push rods to be assembled. The first push rod drive assembly (0430) is connected to the first push rod assembly bracket (0410); and The push rod assembly is connected to the power output end of the first push rod drive assembly (0430) and is used to move between the push rod placement assembly and the metering ring located at the push rod assembly station under the drive of the first push rod drive assembly (0430). The push rod assembly is provided with a rotating clamping assembly (0441) for clamping the push rod and driving the push rod to rotate. The piston assembly includes: A piston placement rack (0620), located outside the piston assembly station, is used to store pistons to be assembled; and The piston assembly includes a push rod pusher (0631) and a piston pusher assembly (0632). The push rod pusher (0631) is located on the upper side of the assembly turntable and is adapted to abut against the top of the push rod. The piston pusher assembly (0632) is located on the lower side of the piston placement bracket (0620) and is used to push the piston placement assembly upward. The sleeve assembly includes: A sleeve placement assembly, located outside the sleeve assembly station, is used to place sleeves to be assembled; and The sleeve assembly includes a sleeve gripper (0832) and a sleeve drive assembly (0831). The power output end of the sleeve drive assembly (0831) is connected to the sleeve gripper (0832) to drive the sleeve gripper (0832) to grip the push rod containing the metering ring and the piston from the sleeve assembly station and press it into the sleeve.

2. The pre-filled syringe assembly equipment as described in claim 1, characterized in that, The assembly turntable includes a rotating disc body (0101) and a fixed frame (0102). The rotating disc body (0101) is intermittently rotated. The fixed frame (0102) is located on the upper side of the rotating disc body (0101) and is spaced apart from the rotating disc body (0101). The rotating disc body (0101) is provided with a plurality of clamping components (0210) at intervals along its circumference. The clamping components (0210) are fixedly connected to the rotating disc body (0101). The assembly turntable also includes: Rack (0103), fixed installation; and A cam divider (0104) is connected to the frame (0103). The cam divider (0104) is provided with an inner ring and an outer ring. The inner ring is fixedly installed, and the outer ring is used to output power. The rotating disk (0101) is connected to the inner ring of the cam divider (0104), and the fixed frame (0102) is connected to the outer ring of the cam divider (0104).

3. The pre-filled syringe assembly equipment as described in claim 2, characterized in that, Also includes: At least two release components (0220) are provided at both the metering ring feeding station and the sleeve assembly station. The release components (0220) are connected to the fixing frame (0102) and are used to release the metering ring by the clamping component (0210). The release component (0220) includes: Release cylinder (0221) is fixedly connected to the fixed frame (0102); and The release bracket (0222) is connected to the power output end of the release cylinder (0221) and is used to push the guide rod (0213).

4. The pre-filled syringe assembly equipment as described in claim 1, characterized in that, The quantitative ring feeding assembly includes: A metering loop placement assembly is used to hold the metering loops to be assembled; and The quantitative ring assembly includes a quantitative ring gripper (0340) and a quantitative ring drive assembly (0350). The power output end of the quantitative ring drive assembly (0350) is connected to the quantitative ring gripper (0340) and is used to drive the quantitative ring gripper (0340) to grip the quantitative ring from the quantitative ring placement assembly and place it into the clamping assembly located at the quantitative ring loading station.

5. The pre-filled syringe assembly equipment as described in claim 4, characterized in that, The quantitative ring feeding assembly further includes: The quantitative loop assembly bracket (0310) is fixedly installed; and The quantitative ring transport assembly is used to transport quantitative rings to the quantitative ring placement assembly; The quantitative loop transport component includes: The quantitative ring vibration assembly (0321) is connected to the quantitative ring assembly bracket (0310); A quantitative ring transport frame (0322) is connected to a vibration assembly. The quantitative ring transport frame (0322) has several quantitative ring track grooves, and the quantitative rings are adapted to slide along these grooves. The quantitative ring vibration assembly (0321) is used to drive the quantitative ring transport frame (0322) to vibrate. A quantitative ring vibratory plate (0323) is connected to the quantitative ring transport frame (0322) and is used to transport quantitative rings to the quantitative ring transport frame (0322).

6. The pre-filled syringe assembly equipment as described in claim 5, characterized in that, The quantitative loop placement assembly includes: A metering ring placement rack (0331), which is slidably fitted with the metering ring assembly bracket (0310), is located at the end of the metering ring track groove and has the freedom to slide in a direction perpendicular to the conveying direction at the end of the metering ring track groove; the metering ring placement rack (0331) has a plurality of metering ring storage slots on the side facing the metering ring track groove; the metering ring storage slots correspond one-to-one with the metering ring track grooves, and when the metering ring storage slots are aligned with the metering ring track grooves, the metering rings in the metering ring track grooves slide into the metering ring storage slots; and The quantitative ring misalignment drive assembly (0332) is connected to the quantitative ring assembly bracket (0310), and its power output end is connected to the quantitative ring placement bracket (0331) to drive the quantitative ring placement bracket (0331) to slide along the quantitative ring assembly bracket (0310).

7. The pre-filled syringe assembly equipment as described in claim 1, characterized in that, The push rod assembly further includes a push rod transport assembly; the push rod transport assembly includes: The push rod vibration assembly (0451) is connected to the first push rod assembly bracket (0410); A push rod transport frame (0452) is connected to a vibration assembly. The push rod transport frame (0452) has several push rod track grooves. The upper end of each push rod is engaged in one of the push rod track grooves and is adapted to slide along the grooves. The push rod vibration assembly (0451) is used to drive the push rod transport frame (0452) to vibrate. The push rod vibratory plate (0453) is connected to the push rod transport frame (0452) and is used to transport push rods to the push rod transport frame (0452); The push rod placement assembly includes: A push rod placement bracket (0421) is located at the end of the push rod track groove and fixed to the first push rod assembly bracket (0410). The push rod placement bracket (0421) has several push rod storage slots on the side facing the push rod track groove. Each push rod storage slot corresponds to and is aligned with the push rod track groove, and the push rod in the push rod track groove slides into the push rod storage slot. A push rod push drive assembly (0422) is provided on the lower side of the push rod placement frame (0421) and is used to push the push rod inside the push rod placement frame (0421) upward.

8. The pre-filled syringe assembly equipment as described in claim 3, characterized in that, The push rod assembly also includes: The push rod assembly (0442) is connected to the first push rod drive assembly (0430) or the power output end of the first push rod drive assembly (0430) and is used to move under the drive of the first push rod drive assembly (0430). The push rod buffer bracket (0443) is slidably engaged with the push rod assembly bracket (0442) and has the freedom to slide up and down relative to the push rod assembly bracket (0442); Several buffer components are disposed between the push rod assembly frame (0442) and the push rod buffer frame (0443); each buffer component includes a limiting rod (0444) and a buffer spring (0445), the limiting rod (0444) passes through the push rod buffer frame (0443) and is connected at both ends to the push rod assembly frame (0442); the buffer spring (0445) is sleeved on the limiting rod (0444) and its two ends abut against the push rod assembly frame (0442) and the push rod buffer frame (0443) respectively; The rotating clamping assembly (0441) is connected to the push rod buffer frame (0443).

9. The pre-filled syringe assembly equipment as described in claim 8, characterized in that, The push rod assembly further includes a first positioning component, the first positioning component comprising: Two first positioning frames (0461) are provided with first positioning half holes on opposite sides to form first positioning holes. The first positioning holes are coaxial with the lower metering ring to make the push rod coaxial with the metering ring. The first positioning drive assembly (0462) has its power output end connected to the two first positioning frames (0461) to drive the two first positioning frames (0461) to move towards or away from each other; The push rod assembly includes two push rod assembly assemblies, and further includes: The second push rod assembly bracket (0710) is fixedly disposed between the piston assembly station and the sleeve assembly station; and The second push rod drive assembly (0720) is connected to the second push rod assembly bracket (0710); The two push rod assembly components are respectively connected to the power output ends of the first push rod drive assembly (0430) and the second push rod drive assembly (0720); the second push rod drive assembly (0720) is used to drive the push rod assembly components to move up and down.

10. The pre-filled syringe assembly equipment as described in claim 9, characterized in that, Also includes: The first push rod detection component is located at the push rod assembly station and is used to detect whether the push rod is assembled in place. A rejection assembly is provided between the push rod assembly station and the piston assembly station. The rejection assembly is located at the push rod rejection station and is used to reject push rods that are not properly assembled. The clamping assembly includes three release components (0220), which are respectively located at the quantitative ring feeding station, the push rod rejection station, and the sleeve assembly station; The first push rod detection component includes: The first photoelectric sensor (0471) is fixedly connected to the push rod assembly frame (0442); and The first sensing block (0472) is fixedly connected to the push rod buffer frame (0443); The rejection component includes: Remove the gripper (0520) used to hold the push rod; and The rejection drive component (0510) is used to drive the rejection gripper (0520) to move; The push rod assembly assembly further includes a second push rod detection assembly, which is located between the second push rod assembly bracket (0710) and the sleeve assembly assembly, and is used to detect whether the push rod is assembled in place; The second push rod detection assembly includes: The second testing bracket (0731) is fixedly installed; and The second photoelectric sensor (0732) is located on the upper side of the push rod and is connected to the second detection bracket (0731).

11. The pre-filled syringe assembly equipment as described in claim 1, characterized in that, It also includes a piston detection assembly, which is located between the piston assembly station and the sleeve assembly station; the piston detection assembly includes a third detection bracket (0651) and a third photoelectric sensor (0652). The third detection bracket (0651) is fixedly installed, and the third photoelectric sensor (0652) is located on the lower side of the assembly turntable and connected to the third detection bracket to detect whether the piston is installed in the lower end of the push rod.

12. The pre-filled syringe assembly equipment as described in claim 1, characterized in that, The piston assembly assembly further includes a piston assembly bracket (0610) and a piston transport assembly, wherein the piston assembly bracket (0610) is fixedly installed; The piston transport assembly includes: The piston vibration assembly (0641) is connected to the piston assembly bracket (0610); A piston transport frame (0642) is connected to a vibration assembly. The piston transport frame (0642) has several piston track grooves, and the piston is adapted to slide along these grooves. The piston vibration assembly (0641) is used to drive the piston transport frame (0642) to vibrate. A piston vibratory plate (0643) is connected to the piston transport frame (0642) and is used to transport pistons to the piston transport frame (0642); The piston placement rack (0620) is located at the end of the piston track groove and is connected to the power output end of the piston pushing assembly (0632). The piston placement rack (0620) has a plurality of piston storage slots on the side facing the piston track groove. The piston storage slots correspond one-to-one with the piston track groove and are aligned. The piston in the piston track groove slides into the piston storage slot.

13. The pre-filled syringe assembly equipment as described in claim 1, characterized in that, The sleeve assembly assembly also includes: Sleeve assembly bracket (0810), fixed setting; and A sleeve transport assembly is used to transport sleeves to the sleeve placement assembly; The sleeve transport assembly includes: A sleeve feeding rack (0841) is connected to a sleeve assembly bracket (0810). The sleeve feeding rack (0841) is provided with a sleeve feeding track groove, and the sleeve is adapted to slide along the sleeve feeding track groove; and The sleeve vibratory plate (0842) is connected to the sleeve feeder (0841) and is used to feed sleeves to the sleeve feeder (0841).

14. The pre-filled syringe assembly equipment as described in claim 1, characterized in that, The sleeve assembly further includes a second positioning component, the second positioning component comprising: Two second positioning brackets (0851) are provided with second positioning half holes on opposite sides to form second positioning holes. The second positioning holes are coaxial with the lower sleeve to make the push rod coaxial with the sleeve. The second positioning drive assembly (0852) has its power output end connected to the two second positioning frames (0851) to drive the two second positioning frames (0851) to move towards or away from each other.

15. The pre-filled syringe assembly equipment as described in claim 13, characterized in that, The sleeve placement assembly includes: The storage turntable (0821) is rotatably engaged with the sleeve assembly bracket (0810). The storage turntable (0821) has a plurality of sleeve placement slots along its circumference. The storage turntable (0821) has a loading position and a unloading position on its side along its circumference. The sleeve loading rack (0841) is located at the loading position and is connected to the sleeve placement slot on the storage turntable (0821) located at the loading position. The turntable drive assembly is connected to the sleeve assembly bracket (0810), and its power output end is connected to the storage turntable (0821) to drive the storage turntable (0821) to rotate intermittently; A retaining ring (0822) is arranged around the outside of the storage turntable (0821) and fixedly connected to the sleeve assembly bracket (0810) to cooperate with the sleeve placement groove to form a closed groove; the retaining ring (0822) has a notch, and the loading position and the unloading position are both located in the notch; The sleeve feeding rack (0841) is inclined upward on the side away from the storage turntable (0821); The sleeve transport assembly also includes a sleeve unloading rack (0843), which is located at the unloading position and has an unloading track groove. One end of the sleeve unloading rack (0843) is located under the storage turntable (0821) to receive the sleeve on the storage turntable (0821), and the other end is inclined downward.

16. The pre-filled syringe assembly equipment as described in claim 15, characterized in that, The sleeve transport assembly also includes a sleeve stop (0860), which is located at the end of the sleeve loading rack (0841). The end of the sleeve stop (0860) is adapted to extend into the sleeve or be placed on the outside of the sleeve to prevent the sleeve from moving toward the storage turntable (0821).

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