A pre-filled syringe inverting device

Abstract

The utility model relates to syringe technical field discloses a kind of pre-filled syringe turnover device, including star wheel seat assembly, the top of the star wheel seat assembly equidistantly is equipped with a plurality of suction cups, the top of the star wheel seat assembly is equipped with cam air distribution disc mechanism, the outside of the star wheel seat assembly is equipped with cam follower mechanism, the top of the star wheel seat assembly is equipped with turnover mechanism, the turnover mechanism is used to more conveniently overturn to syringe, the turnover mechanism includes clamping block, the clamping block is arranged in the top of the star wheel seat assembly, the outside of the clamping block is equipped with mounting seat, the outside of the mounting seat is equipped with vacuum logic valve. In the utility model, pre-filled syringe turnover device works, carousel drives cam follower mechanism and turnover mechanism synchronous motion, cam follower is embedded in the cam groove of cam air distribution disc mechanism, do circular motion with carousel, while guide rod limits cam in radial linear motion.

Description

Technical Field

[0001] This utility model relates to the field of syringe technology, and in particular to a pre-filled syringe flipping device. Background Technology

[0002] A pre-filled syringe is a syringe pre-filled with medication. It consists of a syringe body, piston, plunger, and needle protection device. Its key feature is that the medication is pre-quantitatively filled into the syringe, eliminating the need for drawing the medication and allowing for direct injection. It offers advantages such as ease of operation, reduced risk of medication contamination, and improved medication accuracy. It is widely used in the medical field, especially in scenarios requiring rapid drug administration or high aseptic techniques, such as clinical treatment and vaccination. It effectively simplifies the operational procedures for medical staff and improves medical efficiency.

[0003] A search revealed Chinese Patent Publication No. CN218023945U, which discloses a pre-filled syringe flipping device. The device includes a dial wheel and a syringe suction mechanism, as well as a flipping mechanism and a cam coaxially arranged below the dial wheel. The syringe suction mechanism has a flipping shaft. The flipping mechanism includes a gear, a rack, and a lifting seat. The gear is mounted on the flipping shaft with a clearance fit. The flipping shaft has a limiting part on one side of the gear and a locking element on the other side. The gear has a tapered hole, and the locking element has a wedge-shaped locking piece extending into the tapered hole. The rack is located at the upper end of the lifting seat and meshes with the gear. The lower end of the lifting seat passes through the dial wheel and has a roller. The roller abuts against the cam. This invention has the advantages of simple structure, requiring only one power source, and smooth flipping action. However, the flipping device uses elastic grippers to hold the syringe, which can cause scratches. Furthermore, the elastic grippers require regular maintenance and replacement, affecting production efficiency. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a pre-filled syringe flipping device, which aims to improve the problem that the existing flipping device uses elastic grippers to hold the syringe, which will cause scratches, and the elastic grippers also need to be maintained and replaced regularly, affecting production efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a pre-filled syringe flipping device, comprising a star wheel seat assembly, wherein multiple suction cups are equidistantly mounted on the top of the star wheel seat assembly, a cam gas distribution plate mechanism is mounted on the top of the star wheel seat assembly, a cam follower mechanism is mounted on the outer side of the star wheel seat assembly, and a flipping mechanism is mounted on the top of the star wheel seat assembly. The flipping mechanism is used to more conveniently flip the syringe. The flipping mechanism includes a clamping block, which is disposed on the top of the star wheel seat assembly. A mounting base is disposed on the outer side of the clamping block, a vacuum logic valve is disposed on the outer side of the mounting base, a quick-connect rotating head is mounted on the outer side of the vacuum logic valve, and a lead screw nut assembly is mounted on the outer side of the quick-connect rotating head.

[0006] The above technical solution protects the vacuum system when the pre-filled syringe bottle is not adsorbed. Once the bottle is adsorbed, the channel will be fully opened, thereby enhancing the firmness of the suction. In addition, the quick-connect rotating head ensures that the lead screw will not interfere with the vacuum circuit when it rotates.

[0007] As a further description of the above technical solution:

[0008] The cam valve plate mechanism includes a disc-shaped shaft wheel, which is disposed on the top of the star wheel assembly. A self-aligning bearing is disposed on the outer side of the disc-shaped shaft wheel, a valve plate is mounted on the outer side of the self-aligning bearing, a spring is disposed on the outer side of the valve plate, a guide rod is mounted on the outer side of the spring, and a limit ring is disposed on the outer side of the valve plate.

[0009] Through the above technical solution: the disc-shaped shaft wheel of the cam valve plate mechanism is firmly fixed to the limit ring by four pillars, and the valve plate made of ultra-high wear-resistant material is fastened to the pressure plate by screws. Four guide rods equipped with compression springs cooperate with the preset self-aligning bearings to ensure that the valve plate and the turntable fit tightly together, thereby realizing the precise distribution of the vacuum circuit.

[0010] As a further description of the above technical solution:

[0011] The cam follower mechanism includes a cam follower, which is disposed on the outside of the star wheel assembly. A cam mounting bracket is disposed on the top of the cam follower. A linear bearing is disposed on the outside of the cam mounting bracket. A connecting column is mounted on the outside of the linear bearing. A guide rod is disposed on the outside of the cam mounting bracket.

[0012] The above technical solution involves a cam follower mechanism in which the cam follower is embedded in the cam groove of the disc-shaped shaft wheel of the cam valve plate mechanism. When the cam valve plate mechanism remains stationary, the cam follower performs circumferential motion with the turntable. At the same time, a hardened and chrome-plated guide rod is sleeved on a linear bearing to restrict the cam to perform linear motion only in the radial direction.

[0013] As a further description of the above technical solution:

[0014] A gear is provided on the outer side of the star wheel assembly, and the bottom of the star wheel assembly is fixedly connected to the top of the gear.

[0015] The above technical solution involves mounting gears on the star wheel assembly.

[0016] As a further description of the above technical solution:

[0017] A bottle clamping block is provided on the outside of the suction cup, and a pre-filled syringe bottle is installed on the outside of the suction cup.

[0018] The above technical solution involves attaching a bottle-clamping block to the suction cup and attaching a pre-filled syringe bottle to the bottle-clamping block.

[0019] As a further description of the above technical solution:

[0020] A clamping knob is installed on the top of the star wheel assembly, a turntable is provided on the outside of the clamping knob, a wear-resistant disc is installed on the outside of the turntable, and a cam disc is installed on the top of the star wheel assembly.

[0021] The above technical solution involves installing a clamping knob on the star wheel assembly, a turntable on the clamping knob, a wear-resistant disc on the turntable, and a cam disc outside the star wheel assembly.

[0022] This utility model has the following beneficial effects:

[0023] In this invention, when the pre-filled syringe flipping device is working, the turntable drives the cam follower mechanism and the flipping mechanism to move synchronously. The cam follower is embedded in the cam groove of the cam distribution plate mechanism and moves in a circular motion with the turntable. At the same time, the guide rod restricts the cam to move linearly in the radial direction, driving the screw and nut assembly of the flipping mechanism to move linearly back and forth. The screw and nut assembly converts the linear motion into rotational motion, driving the suction cup to rotate and realize the syringe flipping. In terms of vacuum control, the air valve plate is closely fitted with the turntable through four spring-loaded guide rods and self-aligning bearings to realize the distribution of the vacuum path, and finally realize the stable flipping and reliable suction of the syringe. Attached Figure Description

[0024] Figure 1 This is a perspective view of a pre-filled syringe flipping device proposed in this utility model;

[0025] Figure 2 This is a partial structural cross-sectional view of a pre-filled syringe flipping device proposed in this utility model;

[0026] Figure 3 This is a partial structural diagram of a pre-filled syringe flipping device proposed in this utility model;

[0027] Figure 4 This is a schematic diagram of the cam follower mechanism of a pre-filled syringe flipping device proposed in this utility model;

[0028] Figure 5 This is an exploded view of the flipping mechanism of a pre-filled syringe flipping device proposed in this utility model.

[0029] Legend:

[0030] 1. Star wheel seat assembly; 2. Suction cup; 3. Cam distribution plate mechanism; 301. Disc-shaped shaft wheel; 302. Self-aligning bearing; 303. Valve plate; 304. Spring; 305. Guide rod; 306. Limit ring; 4. Cam follower mechanism; 401. Cam follower; 402. Cam mounting bracket; 403. Linear bearing; 404. Connecting column; 405. Guide rod; 5. Tilting mechanism; 501. Clamping block; 502. Mounting seat; 503. Vacuum logic valve; 504. Quick-connect rotating head; 505. Screw and nut assembly; 6. Gear; 7. Bottle clamping block; 8. Pressing knob; 9. Turntable; 10. Wear-resistant disc; 11. Pre-filled syringe bottle; 12. Cam plate. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figure 1 , Figure 2 and Figure 3The present invention provides an embodiment of a pre-filled syringe flipping device, comprising a star wheel seat assembly 1, a plurality of suction cups 2 equidistantly mounted on the top of the star wheel seat assembly 1, a cam gas distribution plate mechanism 3 mounted on the top of the star wheel seat assembly 1, a cam follower mechanism 4 mounted on the outer side of the star wheel seat assembly 1, and a flipping mechanism 5 mounted on the top of the star wheel seat assembly 1. The flipping mechanism 5 is used to flip the syringe more conveniently. The flipping mechanism 5 includes a clamping block 501, which is disposed on the top of the star wheel seat assembly 1. A mounting seat 502 is disposed on the outer side of the clamping block 501. A vacuum logic valve 503 is disposed on the outer side of the mounting seat 502. A quick-connect rotating head 504 is mounted on the outer side of the vacuum logic valve 503. A lead screw nut assembly 505 is mounted on the outer side of the quick-connect rotating head 504. A gear 6 is disposed on the outer side of the star wheel seat assembly 1. The bottom of the star wheel seat assembly 1 is fixedly connected to the top of the gear 6.

[0033] Specifically, the vacuum logic valve 503 throttles the flow through a 1.0 mm orifice to protect the vacuum system when the pre-filled syringe bottle 11 is not adsorbed. Once the bottle is adsorbed, the channel will be fully opened, thereby enhancing the firmness of the suction. In addition, the quick-connect rotating head 504 connected to it ensures that the screw rotation will not interfere with the vacuum circuit. The outer side of the star wheel seat assembly 1 is equipped with a gear 6, and the bottom of the star wheel seat assembly 1 is fixedly connected to the top of the gear 6.

[0034] Reference Figure 1 , Figure 2 and Figure 5 The cam valve plate mechanism 3 includes a disc-shaped shaft wheel 301, which is located on the top of the star wheel assembly 1. A self-aligning bearing 302 is provided on the outer side of the disc-shaped shaft wheel 301. A valve plate 303 is installed on the outer side of the self-aligning bearing 302. A spring 304 is provided on the outer side of the valve plate 303. A guide rod 305 is installed on the outer side of the spring 304. A limit ring 306 is provided on the outer side of the valve plate 303. A bottle clamping block 7 is provided on the outer side of the suction cup 2. A pre-filled syringe bottle 11 is installed on the outer side of the suction cup 2.

[0035] Specifically, the disc-shaped shaft wheel 301 of the cam-type air distribution plate mechanism 3 is fixed to the limiting ring 306 by four pillars. The air valve disc 303, made of ultra-high wear-resistant material, is fastened to the pressure plate by screws. The four guide rods 305 equipped with compression springs 304 cooperate with the preset self-aligning bearings 302 to ensure that the air valve disc 303 and the turntable 9 fit tightly together, thereby achieving precise distribution of the vacuum air path. The suction cup 2 is provided with a bottle clamping block 7 for holding the bottle body, and a pre-filled syringe bottle 11 is installed on the outside of the suction cup 2.

[0036] Reference Figure 1 , Figure 2 and Figure 4The cam follower mechanism 4 includes a cam follower 401, which is disposed on the outside of the star wheel seat assembly 1. A cam mounting bracket 402 is disposed on the top of the cam follower 401. A linear bearing 403 is disposed on the outside of the cam mounting bracket 402. A connecting column 404 is disposed on the outside of the linear bearing 403. A guide rod 405 is disposed on the outside of the cam mounting bracket 402. A clamping knob 8 is disposed on the top of the star wheel seat assembly 1. A turntable 9 is disposed on the outside of the clamping knob 8. A wear-resistant disc 10 is disposed on the outside of the turntable 9. A cam disc 12 is disposed on the top of the star wheel seat assembly 1.

[0037] Specifically, in the cam follower mechanism 4, the cam follower 401 is embedded in the cam groove of the disc-shaped shaft wheel 301 of the cam valve plate mechanism 3. When the cam valve plate mechanism 3 is stationary, the cam follower 401 performs circumferential motion with the turntable 9. At the same time, the hardened and chrome-plated guide rod 405 is sleeved on the linear bearing 403 to restrict the cam to only perform linear motion in the radial direction. The top of the star wheel seat assembly 1 is provided with a clamping knob 8, and the outside of the clamping knob 8 is provided with a turntable 9. The outside of the turntable 9 is provided with a wear-resistant disc 10, and the top of the star wheel seat assembly 1 is provided with a cam disc 12.

[0038] Working principle: When the pre-filled syringe flipping device is working, the turntable 9 drives the cam follower mechanism 4 and the flipping mechanism 5 to move synchronously in a circular motion. The cam follower 401 in the cam follower mechanism 4 is embedded in the cam groove of the disc-shaped shaft wheel 301 of the cam distribution plate mechanism 3. When the cam distribution plate mechanism 3 is stationary, it follows the turntable 9 in a circular motion. At the same time, the hardened chrome-plated guide rod 405 is sleeved on the linear bearing 403 to restrict the cam to move linearly in the radial direction. Thus, the cam follower mechanism 4 drives the screw nut assembly 505 of the flipping mechanism 5 to move back and forth in a linear motion according to the preset path in the cam disk 12 track. The screw nut assembly 505 converts the linear motion into the rotational motion of the screw. Because the screw has a through hole in the middle and threads at both ends, one end is detachably connected to the suction cup 2, and the other end is connected to the vacuum logic. The valve 503 is connected, so it can rotate 180 degrees together with the suction cup 2 to achieve syringe flipping. In terms of vacuum control, the disc-shaped shaft wheel 301 of the cam gas distribution plate mechanism 3 is mounted on the limit ring 306 through four pillars. The ultra-wear-resistant gas valve plate 303 is mounted on the pressure plate by screws. The four guide rods 305 with compression springs 304 cooperate with the preset self-aligning bearings 302 to ensure that the gas valve plate 303 and the turntable 9 fit tightly to achieve the distribution of the vacuum circuit. When the pre-filled syringe bottle 11 is not sucked up, the vacuum logic valve 503 protects the vacuum system with a 1.0 mm fine orifice throttling. When the bottle is sucked up, the channel is fully opened to enhance the suction firmness. Moreover, the quick-connect rotating head 504 connected to it ensures that the rotation of the screw does not affect the operation of the vacuum circuit, and finally achieves stable flipping and reliable suction of the pre-filled syringe.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pre-filled syringe inverting device comprising a star wheel holder assembly (1) characterized in that: The star wheel assembly (1) has multiple suction cups (2) installed at equal intervals on its top. The star wheel assembly (1) has a cam gas distribution plate mechanism (3) installed on its top. The star wheel assembly (1) has a cam follower mechanism (4) installed on its outer side. The star wheel assembly (1) has a flipping mechanism (5) installed at its top. The flipping mechanism (5) is used to flip the syringe more conveniently. The flipping mechanism (5) includes a clamping block (501), which is disposed on the top of the star wheel assembly (1). A mounting seat (502) is disposed on the outside of the clamping block (501), a vacuum logic valve (503) is disposed on the outside of the mounting seat (502), a quick-connect rotating head (504) is mounted on the outside of the vacuum logic valve (503), and a lead screw and nut assembly (505) is mounted on the outside of the quick-connect rotating head (504).

2. The pre-filled syringe flipping device according to claim 1, characterized in that: The cam valve plate mechanism (3) includes a disc-shaped shaft wheel (301), which is located on the top of the star wheel assembly (1). A self-aligning bearing (302) is provided on the outer side of the disc-shaped shaft wheel (301), and a valve plate (303) is installed on the outer side of the self-aligning bearing (302). A spring (304) is provided on the outer side of the valve plate (303), and a guide rod (305) is installed on the outer side of the spring (304). A limit ring (306) is provided on the outer side of the valve plate (303).

3. The pre-filled syringe flipping device according to claim 1, characterized in that: The cam follower mechanism (4) includes a cam follower (401), which is disposed on the outside of the star wheel assembly (1). A cam mounting bracket (402) is disposed on the top of the cam follower (401), a linear bearing (403) is disposed on the outside of the cam mounting bracket (402), a connecting column (404) is mounted on the outside of the linear bearing (403), and a guide rod (405) is disposed on the outside of the cam mounting bracket (402).

4. The pre-filled syringe flipping device according to claim 1, characterized in that: A gear (6) is provided on the outer side of the star wheel assembly (1), and the bottom of the star wheel assembly (1) is fixedly connected to the top of the gear (6).

5. The pre-filled syringe flipping device according to claim 1, characterized in that: A bottle clamping block (7) is provided on the outside of the suction cup (2), and a pre-filled syringe bottle (11) is installed on the outside of the suction cup (2).

6. The pre-filled syringe flipping device according to claim 1, characterized in that: The star wheel assembly (1) is equipped with a clamping knob (8) on its top, a turntable (9) is provided on the outside of the clamping knob (8), a wear-resistant disc (10) is provided on the outside of the turntable (9), and a cam disc (12) is provided on the top of the star wheel assembly (1).

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