A pre-filled syringe clamping device

Abstract

The utility model relates to prefill syringe technical field discloses a prefill syringe clamping device, including mounting seat, the bottom of mounting seat is equipped with clamping mechanism, the clamping mechanism is used for the clamping of this device, the outside of mounting seat is equipped with drive mechanism, drive mechanism is used for pushing and pulling clamping mechanism, clamping mechanism includes slide, the slide sets up the top of mounting seat, the bottom of slide is equipped with pivot, the inside of pivot upper and lower end all is equipped with oilless bushing, the bottom of top oilless bushing equidistance is equipped with a plurality of deep groove ball bearings. In the utility model, the prefill syringe clamping device realizes the self -adaptation clamping of different specifications syringes through the interchangeable chuck and spring pressure regulation, adopts synchronous pulley drive pivot to drive connecting rod mechanism, converts the vertical movement of pull rod into the horizontal clamping action of slider, realizes the syringe clamping operation of accurate and reliable.

Description

Technical Field

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

[0002] A pre-filled syringe clamping device is a specialized mechanical device used to secure pre-filled syringes, which are pre-loaded with medication. It mainly consists of clamping components, a fixing structure, and operating components. Its core function is to stably fix the pre-filled syringe in a specific position through adjustable clamping force, preventing the syringe from sliding, shaking, or shifting during injection, thus ensuring operational accuracy and safety. The device is designed with clamping slots or elastic clamping arms to accommodate pre-filled syringes of different sizes. Installation and tightness adjustment can be achieved through a knob or snap-fit ​​structure. It is suitable for scenarios such as clinical injection, laboratory drug transfer, and pharmaceutical production line filling. In the medical field, it assists medical personnel in accurately controlling injection speed and dosage, especially improving operational convenience when two-handed operation or micro-volume / continuous injection is required. In industrial production, it ensures the pre-filled syringe remains stable during automated filling and packaging processes, avoiding drug leakage or filling errors, combining practicality and high efficiency.

[0003] A search revealed Chinese Patent Publication No. CN217605627U, which discloses a pre-filled syringe clamping device. The device includes a mounting base, a pair of clamping components slidably mounted on the mounting base, and a push-pull component for bringing the clamping components closer together or further apart. The push-pull component passes through the mounting base, and wedge-shaped sliders are provided on opposite sides of the push-pull component. Each clamping component has a through-type oblique groove, and the two wedge-shaped sliders are installed in the two oblique grooves in a one-to-one correspondence. This invention has advantages such as compact structure and good clamping effect. However, the ideal state is for the pre-filled syringe to be inverted and inspected at the rotary light inspection station. Visual inspection of the pre-filled syringe is required for detecting foreign matter in the liquid, visual inspection, and leakage. To improve detection accuracy and stability, the pre-filled syringe needs to be clamped and rotated at high speed. Existing clamping devices are bulky and have unsatisfactory clamping effects. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a pre-filled syringe clamping device, which aims to improve the existing technology where clamping and high-speed rotation of pre-filled syringes are required to improve detection accuracy and stability. However, existing clamping devices are large in size and have unsatisfactory clamping effects.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a pre-filled syringe clamping device, comprising a mounting base, a clamping mechanism mounted on the bottom of the mounting base for clamping the device, a driving mechanism mounted on the outer side of the mounting base for pushing and pulling the clamping mechanism; the clamping mechanism comprises a slide block disposed on the top of the mounting base, a rotating shaft mounted on the bottom of the slide block, oil-free bushings provided at both the upper and lower ends of the inner side of the rotating shaft, a plurality of deep groove ball bearings equidistantly mounted on the bottom of the top oil-free bushings, a synchronous pulley mounted on the bottom of the mounting base, a spring provided on the bottom of the synchronous pulley, an adjusting nut provided on the bottom of the spring, and a pull rod mounted in the middle of the adjusting nut.

[0006] Through the above technical solution: after the syringe is placed upside down on the slide, the appropriate chuck is replaced to match different diameters, the spring compression is adjusted by adjusting the nut to set the clamping force, the synchronous pulley transmits power to the rotating shaft through the adjustable pressure plate, the waist-shaped hole realizes stepless adjustment, and the oil-free bushing ensures the smooth movement of the pull rod and facilitates maintenance. This mechanism achieves precise clamping force control.

[0007] As a further description of the above technical solution: The driving mechanism includes a slider, which is mounted on the top of the slide block. A pin is installed in the middle of the slider, and a connecting rod is installed on the top of the pin.

[0008] The above technical solution uses a hardened chrome-plated pin connecting rod system to ensure high rigidity and flexible movement. The up-and-down movement of the pull rod is converted into the horizontal movement of the slider through the T-slot, which drives the clamping mechanism to clamp or release the syringe. The deep groove ball bearing provides stable support for the rotation of the device, ensuring operational reliability.

[0009] As a further description of the above technical solution: An adjustable pressure plate is installed on the bottom outer side of the mounting base, and a clamp is installed on the top of the mounting base. Multiple oblong holes are equidistantly opened on the outer side of the adjustable pressure plate.

[0010] The above technical solution facilitates the use and operation of subsequent processes through the installation of an adjustable pressure plate.

[0011] As a further description of the above technical solution: A pre-filled syringe is mounted on the top of the chuck, and the slider is slidably connected to the slide block.

[0012] The above technical solution facilitates use by staff through the installation of pre-filled syringes.

[0013] As a further description of the above technical solution: The synchronous pulley is connected to the rotating shaft via the adjustable pressure plate, and the two connecting rods are respectively connected to the slider and the pull rod.

[0014] The above technical solution allows the slider to move horizontally in a straight line within the T-slot of the slide block by moving the lever up and down.

[0015] As a further description of the above technical solution: The pin is interference-fitted with the pull rod, the connecting rod is clearance-fitted with the pin, and the slider is interference-fitted with the pin.

[0016] The above technical solution, through the connection with the interference fit of the tie rod and slider and the clearance fit of the connecting rod, ensures the flexibility of the device's operation and the high rigidity of the structure.

[0017] This utility model has the following beneficial effects: In this invention, the pre-filled syringe clamping device achieves adaptive clamping of syringes of different specifications through replaceable clamps and spring pressure adjustment. It uses a synchronous belt pulley to drive the shaft and drive the linkage mechanism, which converts the vertical movement of the pull rod into the horizontal clamping action of the slider. The oil-free bushing and deep groove ball bearing ensure smooth operation. The waist-shaped hole provides stepless adjustment function, and the hardened chrome-plated connecting pin ensures the rigidity and durability of the mechanism, realizing precise and reliable syringe clamping operation. Attached Figure Description

[0018] Figure 1 This is a perspective view of a pre-filled syringe clamping device proposed in this utility model; Figure 2 This is a front view of a pre-filled syringe clamping device proposed in this utility model; Figure 3 This is a side view of a pre-filled syringe clamping device proposed in this utility model; Figure 4 This is a bottom view of a pre-filled syringe clamping device proposed in this utility model; Figure 5 This is a top view of a pre-filled syringe clamping device proposed in this utility model; Figure 6 This is a cross-sectional view of a pre-filled syringe clamping device proposed in this utility model.

[0019] Legend: 1. Mounting base; 2. Clamping mechanism; 201. Slide; 202. Rotating shaft; 203. Oil-free bushing; 204. Deep groove ball bearing; 205. Adjusting nut; 206. Spring; 207. Synchronous pulley; 208. Tie rod; 209. Oblong hole; 3. Drive mechanism; 301. Pin; 302. Connecting rod; 303. Slider; 4. Adjustable pressure plate; 5. Chuck; 6. Pre-filled syringe. Detailed Implementation

[0020] 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.

[0021] Reference Figure 1 , Figure 2 and Figure 6 This utility model provides an embodiment of a pre-filled syringe clamping device, including a mounting base 1. A clamping mechanism 2 is mounted on the bottom of the mounting base 1 for clamping the device. A driving mechanism 3 is mounted on the outside of the mounting base 1 for pushing and pulling the clamping mechanism 2. The clamping mechanism 2 includes a slide 201, which is disposed on the top of the mounting base 1. A rotating shaft 202 is mounted on the bottom of the slide 201. Oil-free bushings 203 are provided at both the upper and lower ends of the inner side of the rotating shaft 202. Multiple deep groove ball bearings 204 are equidistantly mounted on the bottom of the top oil-free bushings 203. A synchronous pulley 207 is mounted on the bottom of the mounting base 1. A spring 206 is provided on the bottom of the synchronous pulley 207. An adjusting nut 20 is provided on the bottom of the spring 206. 5. A pull rod 208 is installed in the middle of the adjusting nut 205. Multiple oblong holes 209 are equidistantly opened on the outer side of the adjustable pressure plate 4. Due to the clearance fit between the pull rod 208 and the oil-free bushing 203, the slider 303 moves up and down, causing the slider 303 to move horizontally in the T-slot of the slide block 201. The drive mechanism 3 includes a slider 303, which is installed on the top of the slide block 201. A pin 301 is installed in the middle of the slider 303. Through the opening of the oblong holes 209, the adjustable pressure plate 4 can be connected to the synchronous pulley 207, which can realize the adjustment and rotation of any angle. A connecting rod 302 is installed on the top of the pin 301. The pin 301 is interference-fitted with the pull rod 208, the connecting rod 302 is clearance-fitted with the pin 301, and the slider 303 is interference-fitted with the pin 301. Specifically, when using this pre-filled syringe clamping device, the pre-filled syringe 6 must first be placed upside down on the slide 201. To accommodate syringes of different diameters, the corresponding adapter chuck 5 needs to be replaced. By operating the two adjusting nuts 205 at the bottom of the pull rod 208 assembly, the compression of the spring 206 can be adjusted, thereby setting the clamping force of the chuck 5 on the pre-filled syringe 6. The synchronous pulley 207 is responsible for transmitting the rotational power to the adjustable pressure plate 4 with the oblong hole 209. The oblong hole 209 enables stepless adjustment to adapt to different operational needs. The oil-free bushings 203 at both ends of the rotating shaft 202 ensure that the pull rod 208 can move smoothly up and down in its internal clearance fit. Through the above process, wear can be reduced and periodic replacement can be facilitated. The two connecting rods 302 are connected to the interference fit pull rod 208, the slider 303 and the clearance fit connecting rod 302 respectively through the pins 301 made of hardened chrome-plated rods, ensuring the flexibility of the device's operation and the high rigidity of the structure. The up and down movement of the pull rod 208 drives the slider 303 to move horizontally in the T-slot of the slide block 201, thereby driving a pair of clamping mechanisms 2 to move closer to each other to clamp the syringe 6. When it is necessary to release the syringe, the operation is reversed. Through the above process, since the rotational movement of the entire device is reliably supported by the deep groove ball bearings 204 at both ends of the mounting base 1, the stability and durability of the device are ensured.

[0022] Reference Figure 1 , Figure 3 and Figure 5 An adjustable pressure plate 4 is installed on the bottom outer side of the mounting base 1, a chuck 5 is installed on the top of the mounting base 1, and a pre-filled syringe 6 is installed on the top of the chuck 5. The installation of the pre-filled syringe 6 facilitates the use of the operator. The slider 303 is slidably connected to the slide base 201. The synchronous pulley 207 is connected to the rotating shaft 202 through the adjustable pressure plate 4. The two connecting rods 302 are respectively connected to the slider 303 and the pull rod 208. Specifically, by moving the pull rod 208 up and down, the slider 303 moves horizontally in the T-slot of the slide block 201. At this time, the clamps 5 move closer to each other and clamp the pre-filled syringe 6; the opposite movement causes the clamps 5 to loosen. In addition, the deep groove ball bearing 204 on the mounting base 1 provides reliable support for the rotation of the entire device. By adjusting the two adjusting nuts 205 at the bottom of the pull rod assembly, the compression of the spring 206 can be changed, thereby setting the clamping force of the clamps 5 on the pre-filled syringe 6.

[0023] Working principle: When the pre-filled syringe clamping device is working, the pre-filled syringe 6 is first inverted on the slide 201, and the appropriate chuck 5 is replaced according to the syringe diameter; the compression of the spring 206 is adjusted by the two adjusting nuts 205 at the bottom of the pull rod 208 assembly, and the clamping force of the chuck 5 on the pre-filled syringe 6 is set. The synchronous pulley 207 transmits the rotational power to the rotating shaft 202 through the adjustable pressure plate 4 with the oblong hole 209. The oblong hole 209 is used to achieve stepless adjustment. The oil-free bushings 203 at both ends of the rotating shaft 202 ensure the internal clearance of the pull rod 208. The two connecting rods 302 are connected to the interference fit pull rod 208, the slider 303 and the clearance fit connecting rod 302 respectively through pins 301 made of hardened chrome-plated rods, ensuring flexible movement and high rigidity. The up and down movement of the pull rod 208 drives the slider 303 to make horizontal linear movement in the T-slot of the slide block 201, driving a pair of clamping mechanisms 2 to move closer to each other and clamp the pre-filled syringe 6; otherwise, they are released. The deep groove ball bearings 204 at both ends of the mounting base 1 provide reliable support for the rotation of the entire device.

[0024] 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 clamping device, comprising a mounting base (1), characterized in that: A clamping mechanism (2) is installed at the bottom of the mounting base (1). The clamping mechanism (2) is used to clamp the device. A driving mechanism (3) is installed on the outside of the mounting base (1). The driving mechanism (3) is used to push and pull the clamping mechanism (2). The clamping mechanism (2) includes a slide (201), which is located on the top of the mounting base (1). A rotating shaft (202) is installed at the bottom of the slide (201). An oil-free bushing (203) is provided at both the upper and lower ends of the inner side of the rotating shaft (202). Multiple deep groove ball bearings (204) are installed at equal intervals at the bottom of the top oil-free bushing (203). A synchronous pulley (207) is installed at the bottom of the mounting base (1). A spring (206) is provided at the bottom of the synchronous pulley (207). An adjusting nut (205) is provided at the bottom of the spring (206). A pull rod (208) is installed in the middle of the adjusting nut (205). An adjustable pressure plate (4) is installed on the outer side of the bottom of the rotating shaft (202). A chuck (5) is installed on the top of the rotating shaft (202). Multiple waist-shaped holes (209) are opened at equal intervals on the outer side of the adjustable pressure plate (4).

2. The pre-filled syringe clamping device according to claim 1, characterized in that: The drive mechanism (3) includes a slider (303) mounted on the top of the slide block (201), a pin (301) mounted in the middle of the slider (303), and a connecting rod (302) mounted on the top of the pin (301).

3. The pre-filled syringe clamping device according to claim 2, characterized in that: The top of the clamp (5) is fitted with a pre-filled syringe (6), and the slider (303) is slidably connected to the slide block (201).

4. The pre-filled syringe clamping device according to claim 2, characterized in that: The synchronous pulley (207) is connected to the rotating shaft (202) through the adjustable pressure plate (4), and the two connecting rods (302) are respectively connected to the slider (303) and the pull rod (208).

5. A pre-filled syringe clamping device according to claim 2, characterized in that: The pin (301) is interference-fitted with the pull rod (208), the connecting rod (302) is clearance-fitted with the pin (301), and the slider (303) is interference-fitted with the pin (301).

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