Filling mechanism for needle cylinder

Abstract

The utility model belongs to the field of needle cylinder filling, and particularly relates to a filling mechanism for needle cylinders, which comprises a placing plate frame, a driving device group is arranged on the placing plate frame, the top of the placing plate frame is fixedly connected with a fixed sleeve seat, and the inner wall of the fixed sleeve seat is slidably connected with a movable sleeve. The top of the movable sleeve is provided with a lower driving assembly, and the inner wall of the movable sleeve is slidably connected with a movable shaft. According to the filling mechanism for the needle cylinder, the top of the piston rod in the needle cylinder is tightly attached to the inner wall of the circular groove through downward movement of the upper driving arm seat, then the piston rod is fixed to the upper driving arm seat through the clamping block and the rotary knob block, the piston rod can be driven to discharge liquid in the needle cylinder through descending of the upper driving arm seat, and filling is completed through the filling needle. Moreover, after filling is finished, the upper driving seat can drive the piston rod to move upwards, so that liquid at the position of the filling needle flows back, the anti-dripping function is effectively achieved, pollution of the liquid to the filling environment is reduced to a great extent, and cleanliness and sanitation of the filling environment are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of syringe filling technology, specifically a syringe filling mechanism. Background Technology

[0002] Syringe filling is frequently involved in various industrial production and laboratory operations. From the precise quantitative filling of pharmaceutical preparations to the dispensing of chemical raw materials, and the accurate distribution of trace amounts of liquid in scientific research experiments, syringe filling has extremely wide applications.

[0003] Currently, existing devices often leave liquid residue on the filling needle after filling, which drips into the filling environment due to the lack of an effective anti-drip mechanism. This seriously contaminates the filling area, affects the hygiene of the production environment, and increases cleaning costs and time. In view of this, we propose a syringe filling mechanism. Utility Model Content

[0004] The main objective of this invention is to provide a syringe filling mechanism that can solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides a syringe filling mechanism, comprising a placement plate frame, a driving device assembly mounted on the placement plate frame, a fixed sleeve seat fixedly connected to the top of the placement plate frame, a movable sleeve slidably connected to the inner wall of the fixed sleeve seat, a lower driving assembly mounted on the top of the movable sleeve, a movable shaft slidably connected to the inner wall of the movable sleeve, and an upper driving assembly mounted on the top of the movable shaft. The lower driving assembly includes:

[0006] The lower drive arm seat is fixedly connected to the outer wall of the movable sleeve, and a filling needle is snapped onto the lower drive arm seat.

[0007] A syringe holder is fixedly connected to the top of the lower drive arm seat, and a slide rod is fixedly connected to the outer wall of the lower drive arm seat;

[0008] A guide slider is slidably connected to the outer wall of the slide rod, and a limit block is fixedly connected to the top of the guide slider;

[0009] The filling needle is fixedly connected to a lug connector, and a syringe is threadedly connected to the top of the lug connector.

[0010] Preferably, the syringe holder has an avoidance groove, and the outer wall of the guide slider is slidably connected to the inner wall of the avoidance groove. The avoidance groove can avoid the slide rod and guide the movement of the guide slider.

[0011] Preferably, the upper drive assembly includes an upper drive arm seat, on which a clamping block is engaged, and a engaging slot is provided on the upper drive arm seat, allowing the clamping block to engage with the engaging slot.

[0012] Preferably, a knob block is sleeved on the clamping block, and a threaded head is fixedly connected to the bottom of the knob block. A threaded hole is opened on the snap-fit ​​groove of the upper drive arm seat, and the threaded head can be threadedly connected to the threaded hole.

[0013] Preferably, the inner wall of the syringe is provided with a piston rod, and the top of the syringe holder is fixedly connected with a notch sleeve, through which the ear of the syringe is placed.

[0014] Preferably, the bottom of the upper drive arm seat is provided with a circular groove, and the clamping block is provided with a through hole, and the inner wall of the circular groove can abut against the top of the piston rod.

[0015] This utility model provides a syringe filling mechanism. It has the following beneficial effects:

[0016] (1) When the syringe filling mechanism is in operation, motor 2 drives lifting plate 2 to descend, which in turn moves the upper drive arm seat downward, causing the top of the piston rod inside the syringe to fit tightly against the inner wall of the circular groove. The piston rod is then fixed to the upper drive arm seat by clamping blocks and knob blocks. In this way, the descent of the upper drive arm seat can drive the piston rod to discharge the liquid from the syringe, completing the filling process from the filling needle. Furthermore, after filling is completed, the upper drive seat can drive the piston rod upward, causing the liquid at the filling needle to flow back, effectively achieving the anti-drip function, greatly reducing the pollution of the filling environment by the liquid, and ensuring the cleanliness and hygiene of the filling environment.

[0017] (2) When the filling needle needs to be replaced, the moving limit block of this syringe filling mechanism drives the guide slider to slide on the slide rod, stretching the compression spring and releasing the limit on the filling needle. This allows for convenient and quick removal of the old filling needle and lug connector, and replacement of the new components. After the limit block is released, the compression spring returns to its original position, and the limit block re-engages with the filling needle to achieve the limit. This design makes the filling needle replacement process simple and efficient, greatly improving work efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0020] Figure 2 This is a partial cross-sectional view of the plate holder and drive device assembly of this utility model;

[0021] Figure 3 This is a schematic diagram of the exploded structure of the lower drive arm seat and syringe of this utility model;

[0022] Figure 4 This is an exploded structural diagram of the drive arm seat and clamping block of this utility model;

[0023] Figure 5 This is a partial cross-sectional view of the filling needle and limiting block of this utility model.

[0024] The following are the reference numerals: 1. Plate holder; 2. Drive unit assembly; 3. Fixed sleeve seat; 4. Movable sleeve; 5. Lower drive assembly; 51. Lower drive arm seat; 52. Filling needle; 53. Syringe holder; 531. Clearance slot; 54. Slide bar; 55. Guide slider; 56. Limit block; 57. Lure connector; 58. Syringe; 6. Movable shaft; 7. Upper drive assembly; 71. Upper drive arm seat; 711. Circular groove; 72. Clamping block; 721. Through hole; 73. Knob block; 731. Threaded head; 74. Piston rod; 75. Notched sleeve.

[0025] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] 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.

[0027] Please see Figures 1-5This utility model proposes a syringe filling mechanism, including a placement plate frame 1. A drive unit assembly 2 is mounted on the placement plate frame 1. The drive unit assembly 2 includes a motor, coupling, reducer, lead screw, lead screw sleeve, guide rod, lifting plate, and other related supporting components, all in three sets. Since this is prior art, it will not be described in detail. Motor one drives lifting plate one to move up and down, and motor two drives lifting plate two to move up and down. A movable sleeve 4 is fixedly connected to the top of lifting plate one, and a movable shaft 6 is fixedly connected to the inner wall of lifting plate two. The top of the placement plate frame 1... A fixed sleeve seat 3 is fixedly connected, and a movable sleeve 4 is slidably connected to the inner wall of the fixed sleeve seat 3. A lower drive assembly 5 is provided on the top of the movable sleeve 4, and a movable shaft 6 is slidably connected to the inner wall of the movable sleeve 4. An upper drive assembly 7 is provided on the top of the movable shaft 6. The lower drive assembly 5 includes a lower drive arm seat 51. The lower drive arm seat 51 is fixedly connected to the outer wall of the movable sleeve 4. A filling needle 52 is snapped onto the lower drive arm seat 51. A syringe holder 53 is fixedly connected to the top of the lower drive arm seat 51, and a slide rod 54 is fixedly connected to the outer wall of the lower drive arm seat 51.

[0028] In this utility model, a guide slider 55 is slidably connected to the outer wall of the slide rod 54, a limit block 56 is fixedly connected to the top of the guide slider 55, a lug connector 57 is fixedly connected to the top of the filling needle 52, a syringe 58 is threadedly connected to the top of the lug connector 57, and an avoidance groove 531 is provided on the syringe holder 53. The outer wall of the guide slider 55 is slidably connected to the inner wall of the avoidance groove 531. The slide rod 54 can be avoided through the avoidance groove 531, and the movement of the guide slider 55 can also be guided through the avoidance groove 531.

[0029] Furthermore, the upper drive assembly 7 includes an upper drive arm seat 71, on which a clamping block 72 is snapped. The upper drive arm seat 71 has a snap-fit ​​groove, and the clamping block 72 can be snapped into the snap-fit ​​groove. A knob block 73 is sleeved on the clamping block 72, and a threaded head 731 is fixedly connected to the bottom of the knob block 73. A threaded hole is opened in the snap-fit ​​groove of the upper drive arm seat 71, and the threaded head 731 can be threaded into the threaded hole. A piston rod 74 is provided on the inner wall of the syringe 58, and a notch sleeve 75 is fixedly connected to the top of the syringe holder 53. The notch sleeve 75 is used to place the ear of the syringe 58. A circular groove 711 is opened at the bottom of the upper drive arm seat 71, and a through hole 721 is opened on the clamping block 72. The inner wall of the circular groove 711 can abut against the top of the piston rod 74, and the through hole 721 facilitates the avoidance of the threaded head 731.

[0030] In use, rotating the syringe 58 facilitates the threaded connection between the syringe 58 and the Luer connector 57 fixed on the lower drive arm seat 51, thus fixing the syringe 58. The motor 2 on the drive unit 2 drives the lifting plate 2 to descend, which in turn lowers the height of the movable shaft 6, causing the upper drive arm seat 71 to descend. This brings the top of the piston rod 74 in the syringe 58 into close contact with the inner wall of the circular groove 711. At this point, the clamping block 72 is first secured to the upper drive arm seat 71, and then the knob block 73 is secured to the clamping block 72. Rotating the knob block 73 completes the threaded connection between the bottom threaded head 731 and the threaded hole. Next, the clamping block 72 is fixed on the upper drive arm seat 71. At the same time, through the cooperation of the clamping block 72, the piston rod 74 is fixed on the upper drive arm seat 71. At this time, by the descent of the upper drive arm seat 71, the piston rod 74 can be driven to descend, thereby causing the piston rod 74 to discharge the liquid in the syringe 58, so that the liquid in the syringe 58 is discharged from the filling needle 52, completing the filling work. After the filling work is completed, in order to avoid dripping, the upper drive arm seat 71 will drive the piston rod 74 to move upward, so that the liquid at the filling needle 52 flows back, completing the anti-drip work and reducing the pollution of the filling environment by the liquid.

[0031] When changing the filling liquid, we need to replace the filling needle 52. By moving the limiting block 56, the guide slider 55 slides on the slide rod 54. At this time, the compression spring is stretched, causing the limiting block 56 to move away from the filling needle 52, so that the limiting position of the filling needle 52 on the lower drive arm seat 51 is contacted, making it convenient for us to remove the filling needle 52 and the lug connector 57, and replace it with a new filling needle 52 and lug connector 57. After releasing the limiting block 56, the limiting block 56 re-contacts the surface of the filling needle 52 through the reset of the compression spring, thereby limiting the position of the filling needle 52 on the lower drive arm seat 51, making the replacement work convenient and efficient.

[0032] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A filling mechanism for a syringe comprising a rest plate (1), characterized in that: A drive unit assembly (2) is provided on the placement plate frame (1). A fixed sleeve seat (3) is fixedly connected to the top of the placement plate frame (1). A movable sleeve (4) is slidably connected to the inner wall of the fixed sleeve seat (3). A lower drive assembly (5) is provided on the top of the movable sleeve (4). A movable shaft (6) is slidably connected to the inner wall of the movable sleeve (4). An upper drive assembly (7) is provided on the top of the movable shaft (6). The lower drive assembly (5) includes: The lower drive arm seat (51) is fixedly connected to the outer wall of the movable sleeve (4), and a filling needle (52) is snapped onto the lower drive arm seat (51). A syringe holder (53) is fixedly connected to the top of the lower drive arm seat (51), and a slide rod (54) is fixedly connected to the outer wall of the lower drive arm seat (51). Guide slider (55), the outer wall of the slide rod (54) is slidably connected to the guide slider (55), and the top of the guide slider (55) is fixedly connected to the limit block (56); A lug connector (57) is fixedly connected to the top of the filling needle (52), and a syringe (58) is threadedly connected to the top of the lug connector (57).

2. A fill mechanism for a syringe as defined in claim 1, wherein: The syringe holder (53) has an clearance slot (531) and the outer wall of the guide slider (55) is slidably connected to the inner wall of the clearance slot (531).

3. A fill mechanism for a syringe as defined in claim 1, wherein: The upper drive assembly (7) includes an upper drive arm seat (71), on which a clamping block (72) is engaged.

4. A fill mechanism for a syringe as defined in claim 3, wherein: A knob block (73) is sleeved on the clamping block (72), and a threaded head (731) is fixedly connected to the bottom of the knob block (73).

5. A fill mechanism for a syringe as defined in claim 1, wherein: The inner wall of the syringe (58) is provided with a piston rod (74), and the top of the syringe holder (53) is fixedly connected with a notch sleeve (75).

6. A fill mechanism for a syringe as defined in claim 3, wherein: The bottom of the upper drive arm seat (71) is provided with a circular groove (711), and the clamping block (72) is provided with a through hole (721).

Images