Silicone oil atomizing and spraying system for pre-filling needle

Abstract

The utility model discloses a silicone oil atomizing and spraying system for pre-filling needles, which relates to the technical field of medical instrument processing equipment and comprises a base, a mounting frame, a driving mechanism, an atomizing component and a placing and positioning mechanism, and a first sliding chute and a second sliding chute are formed in the surface of the base; the driving mechanism comprises a driving assembly arranged in the second sliding groove and a guiding auxiliary assembly located in the first sliding groove. The atomization assembly comprises an atomizer, and the atomizer is connected with a liquid storage tank at the top of the mounting frame through a liquid conveying pipe; and the placing and positioning mechanisms are respectively arranged in a first station area and a second station area at the top of the base and are used for radially positioning the pre-filling needle cylinder. The pre-filling needle spraying device is high in flexibility, accurate in positioning, uniform in spraying and suitable for pre-filling needles of different sizes.

Description

Technical Field

[0001] The utility model relates to the technical field of medical device processing equipment, and particularly relates to a silicone oil atomizing spraying system for prefilled syringes. Background Art

[0002] A prefilled syringe is a syringe in which a drug is pre-filled in a polymer or glass barrel in a sterile environment; it does not belong to a medical device but is a new type of drug packaging system, mainly composed of a drug, a syringe, a rubber stopper, a needle cap, a push rod, etc., and it combines the two functions of storing the drug and injecting. Silicone oil is a commonly used lubricant in prefilled syringes, which is coated on the inner wall and piston of the syringe to reduce the friction force when the piston slides and ensure the smooth progress of the injection process. The silicone oil spraying of prefilled syringes is usually concentrated inside the needle tube. When the existing prefilled syringe filling machine fills prefilled syringes, it cannot be adjusted and installed according to prefilled syringes of different sizes, and can only install and fill prefilled syringes of a fixed size, which has certain limitations. Summary of the Utility Model

[0003] In view of this, the utility model provides a silicone oil atomizing spraying system for prefilled syringes to solve the technical problem that the existing technology cannot be adjusted and installed according to prefilled syringes of different sizes.

[0004] To achieve the above object, the utility model provides the following technical solutions:

[0005] A silicone oil atomizing spraying system for prefilled syringes, comprising:

[0006] A base, on the surface of which there are respectively arranged a first chute and a second chute that are parallel to each other, and at the top of the base there are a first working station and a second working station arranged adjacent to each other;

[0007] An installation frame, on both sides of which there are side plates extending outwards;

[0008] A driving mechanism, which includes a driving component arranged in the second chute and a guiding and assisting component located in the first chute. The driving component is connected to one of the side plates through a first slider, and the other side plate is fixedly connected to a second slider of the guiding and assisting component;

[0009] An atomizing component, which includes an atomizer installed below the installation frame through a hydraulic cylinder. The atomizer is connected to a water pump arranged in a liquid storage tank at the top of the installation frame through an infusion pipe, and a plurality of atomizing nozzles are arranged in an array at the bottom of the atomizer;

[0010] Two symmetrically arranged placement and positioning mechanisms, which are respectively arranged in the areas of the first working station and the second working station and are used for radially positioning the prefilled syringe barrel.

[0011] Further, the hydraulic cylinder is centrally disposed at the top end of the mounting frame, and its piston rod extends downward into the mounting frame and is rigidly connected to the top of the atomizer at the end.

[0012] Further, the driving assembly further includes:

[0013] A stepping motor fixedly installed in the second chute;

[0014] A lead screw, one end of which is connected to the power output end of the stepping motor through a coupling, and the other end is pivotally connected to the end wall of the second chute through a bearing block;

[0015] A pair of first guide rods arranged in parallel, and the first slider fixedly connected to the corresponding side plate bottom by screws is threadedly sleeved on the surface of the lead screw and passes through the pair of first guide rods to form a two-way constrained sliding fit.

[0016] Further, the guiding and assisting assembly further includes a second guide rod horizontally fixed in the first chute, and the second slider screwed and fixed to the bottom of the corresponding side plate penetrates through the second guide rod to form a linear sliding pair.

[0017] Further, the placing and positioning mechanism includes:

[0018] A placing box positioned and installed on the surface of the base, the placing box is composed of a box body welded at the bottom and a detachable and fitted cover plate, through holes are symmetrically formed in the cover plate, and a cross bar is horizontally arranged inside the box body;

[0019] A vertical guiding assembly, including a pressing rod guiding and sliding along the geometric center axis of the cover plate, the top end of the pressing rod is rigidly connected to a rectangular pressing plate, and the bottom end is bolted and fastened to a connecting plate;

[0020] And a pair of transmission and positioning components mirror-symmetrically distributed inside the box body.

[0021] Furthermore, the pair of transmission and positioning components includes:

[0022] A pair of vertical rods vertically fixed on the inner wall of the box body, a first sliding cylinder is coaxially sleeved around the periphery of each vertical rod, the two first sliding cylinders are respectively fixedly connected to both ends of the connecting plate, and a connecting rod is rotatably connected to the front surface of each first sliding cylinder;

[0023] A pair of second sliding cylinders slidably sleeved on the cross bar, the front surfaces of the pair of second sliding cylinders are respectively rotatably connected to the ends of the pair of connecting rods;

[0024] A pair of movable plates fixedly connected to the tops of the pair of second sliding cylinders, and positioning seats are arranged on the inner sides of the pair of movable plates.

[0025] Further, compression springs are sleeved on both sides of the cross bar. One ends of a pair of the compression springs are respectively welded to the side wall of the box body, and the other ends are respectively fixedly connected to the outer sides of a pair of the second sliding cylinders, constituting an elastic reset device.

[0026] Further, the working surface of the positioning seat is provided with trapezoidal positioning cavities distributed at equal intervals, and anti-slip convex plates are arranged in a staggered manner on both sides of the trapezoidal inclined surface.

[0027] Further, it further includes a photoelectric position sensor embedded at the bottom of the atomizer, and the photoelectric position sensor is embedded at the geometric center position of the atomizer nozzle array.

[0028] As can be seen from the above technical solutions, the advantages of the present utility model are as follows:

[0029] 1. High flexibility: The present utility model realizes the precise movement of the mounting frame through the combination of the stepping motor and the lead screw of the driving mechanism, so as to adjust the position of the atomizer and adapt to pre-filled needles of different sizes.

[0030] 2. Precise positioning: The placement positioning mechanism of the present utility model realizes the radial positioning of the pre-filled syringe barrel through the linkage of the pressure rod, the connecting rod and the movable plate, ensuring the stability during the spraying process. The trapezoidal positioning cavity and the anti-slip convex plate on the positioning seat further improve the positioning accuracy and anti-slip property.

[0031] 3. Uniform spraying: The atomizer of the present utility model is provided with a plurality of atomizer nozzles in an array at the bottom, and in combination with the photoelectric position sensor, the real-time positioning of the spraying distance is realized, ensuring that the silicone oil is evenly sprayed on the inner wall of the pre-filled needle. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings constituting a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model.

[0033] Figure 1 It is a schematic structural diagram of the present utility model.

[0034] Figure 2 It is Figure 1 a cross-sectional schematic view of the connection relationship between the base, the mounting frame and the driving mechanism of

[0035] Figure 3 It is Figure 1 a cross-sectional schematic view of

[0036] Figure 4 It is Figure 3 a partial structural schematic view of the placement positioning mechanism of

[0037] Figure 5 It isFigure 4 Partial enlarged view of part A

[0038] Figure 6 is Figure 3 Schematic diagram of the positional relationship between the base of

[0039] Figure 7 is Figure 6 Right view cross-sectional view of the placement and positioning mechanism of

[0040] Explanation of reference numerals: 1 - base; 11 - first chute; 12 - second chute; 2 - mounting frame; 21 - side plate; 3 - driving mechanism; 31 - stepping motor; 32 - lead screw; 33 - first guide rod; 34 - first slider; 35 - second slider; 36 - second guide rod; 4 - hydraulic cylinder; 5 - atomizer; 6 - photoelectric position sensor; 7 - atomizing nozzle; 8 - liquid storage tank; 9 - placement and positioning mechanism; 91 - placement box; 911 - movable groove; 92 - pressing rod; 921 - pressing plate; 93 - connecting plate; 931 - first sliding cylinder; 94 - vertical rod; 95 - connecting rod; 96 - second sliding cylinder; 97 - cross bar; 971 - compression spring; 98 - movable plate; 99 - positioning seat; 991 - positioning cavity; 992 - anti-slip convex plate; 100 - first working position; 200 - second working position. Detailed implementation manners

[0041] To make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in combination with the implementation manners and the accompanying drawings. Herein, the illustrative implementation manners of the present utility model and their descriptions are used to explain the present utility model, but do not limit the present utility model.

[0042] Please refer to the attached Figures 1 to 7 , Figure 1 , Figure 6Disclosed is a silicone oil atomizing spraying system for a pre-filled syringe involved in this embodiment, including a silicone oil atomizing spraying system for a pre-filled syringe, characterized by comprising: a base 1, a mounting frame 2, a driving mechanism 3, an atomizing assembly, and two placement and positioning mechanisms 9. On the surface of the base 1 with a modular split structure, a first chute 11 and a second chute 12 parallel to each other are respectively provided. At the top of the base 1, there are a first station 100 and a second station 200 with independent positioning references; the driving mechanism 3 includes a driving component arranged in the second chute 12 and a guiding and assisting component located in the first chute 11. The mounting frame 2 with a gantry support structure includes side plates 21 extending to both sides. Among them, one side plate 21 is linearly connected to the driving component through a first slider 34, and the other side plate 21 is fixedly connected to the guiding and assisting component through a second slider 35; the atomizing assembly includes a hydraulic cylinder 4 connected by a flange and an atomizer 5 arranged below the mounting frame 2. A plurality of atomizing nozzles 7 are arrayed at the bottom of the atomizer 5. Moreover, the atomizer 5 forms a closed-loop liquid supply system through a water pump arranged on the liquid delivery pipe of a liquid storage tank 8 at the top of the mounting frame 2; a pair of placement and positioning mechanisms 9 are symmetrically arranged and are respectively arranged in the areas of the first station 100 and the second station 200 for radially centering, positioning, and clamping the pre-filled syringe barrel.

[0043] As Figure 1 shown, the hydraulic cylinder 4 is centrally arranged at the top of the mounting frame 2 in a four-point support manner, and the atomizer 5 is connected to the end of the hydraulic cylinder 4 through a flange-type rigid coupling.

[0044] Furthermore, the end section of the liquid delivery pipe is a flexible pipe so that the atomizer 5 can have sufficient flexibility and adaptability when driven by the hydraulic cylinder 4 to move up and down.

[0045] As Figure 3 shown, the driving component further includes: a stepping motor 31, a lead screw 32, and a pair of first guide rods 33. The stepping motor 31 is embedded in the bottom base surface of the second chute 12 through a flange seat. One end of the lead screw 32 is connected to the power output shaft of the stepping motor 31 through a coupling, and the other end is pivotally connected to the end wall of the second chute 12 through a bearing seat; a pair of first guide rods 33 are arranged in parallel on both sides above the lead screw 32 and realize displacement transmission through precise meshing with the lead screw 32, so as to realize the transmission of displacement; a ball screw nut is integrated in the center of the first slider 34 fixedly connected to the corresponding side plate 21 through a screw. The threaded connection between the ball screw nut and the lead screw 32 realizes displacement transmission; the first slider 34 passes through a pair of first guide rods 33 to form a composite constraint structure to ensure the accuracy of the movement of the first slider 34.

[0046] As Figure 2 、 Figure 3As shown, the guiding and assisting component further includes a second guiding rod 36 horizontally fixed in the first sliding groove 11. A second sliding block 35 screwed and fixed to the bottom of the corresponding side plate 21 penetrates through the second guiding rod 36 to form a linear sliding pair, enabling the second sliding block 35 to linearly slide on the second guiding rod 36, thereby achieving smooth and precise movement.

[0047] In an embodiment of the present application, as Figure 7 shown, the placing and positioning mechanism 9 includes: a placing box 91, a vertical guiding component, and a transmission and positioning component. The placing box 91 is stably positioned and installed on the surface of the base 1 through the box body at its bottom. Its top has a detachable and fitted cover plate. The detachable design of the box body and the cover plate facilitates daily cleaning and maintenance. A cross bar 97 is horizontally arranged inside the box body, and two through-type movable slots 911 are symmetrically opened on the cover plate, providing a moving space for the subsequent transmission and positioning component. The vertical guiding component is mainly composed of a pressing rod 92, a pressing plate 921, and a connecting plate 93. The pressing rod 92 slides along the geometric center axis of the cover plate. Its top is rigidly connected to the rectangular pressing plate 921, and its bottom is fixedly connected to the connecting plate 93 through screws. The pressing rod 92 provides a downward pressure through the pressing plate 921 to ensure that the transmission and positioning component can accurately respond, ensuring the effective transmission of force.

[0048] Among them, a pair of transmission and positioning components are mirror-symmetrically distributed inside the box body. Each transmission and positioning component includes: a pair of vertical rods 94 and a pair of second sliding cylinders 96. The vertical rods 94 are vertically fixed on the inner wall of the box body. The first sliding cylinder 931 is coaxially sleeved around the vertical rod 94 and is fixedly connected to both ends of the connecting plate 93. The vertical rod 94 and the first sliding cylinder 931 provide stable vertical guiding to ensure that the connecting plate 93 can vertically move when receiving the downward pressure of the pressing rod 92, thereby driving the connecting rod 95 and the second sliding cylinder 96 to move horizontally. A connecting rod 95 is rotatably connected to the front surface of each first sliding cylinder 931. The end of the connecting rod 95 is rotatably connected to the second sliding cylinder 96 slidably sleeved on the cross bar 97. The movable plate 98 is fixedly connected to the top of the second sliding cylinder 96, and a positioning seat 99 is provided inside it. The connecting rod 95 and the second sliding cylinder 96 achieve the transmission and conversion of force through rotational connection, converting the vertical downward pressure into a horizontal moving force to drive the movable plate 98 and the positioning seat 99 to move synchronously, realizing the precise clamping and positioning of the pre-filled syringe.

[0049] Furthermore, compression springs 971 are sleeved on both sides of the cross bar 97. One end of each compression spring 971 is welded to the side wall of the box body, and the other end is fixedly connected to the outer side of the second sliding cylinder 96, constituting an elastic reset device. The compression springs 971 provide an elastic reset force. When the pressing rod 92 releases the downward pressure, it can quickly reset the second sliding cylinder 96, the movable plate 98, and the positioning seat 99, preparing for the next positioning operation. This design improves the response speed and stability of the system, ensuring the continuity and accuracy of the positioning operation.

[0050] As Figure 4 , Figure 5 shown, the positioning seat 99 is fixedly connected to the inner side of the movable plate 98. Its working surface is provided with trapezoidal positioning cavities 991 distributed at equal intervals. The trapezoidal design with equal intervals can adapt to pre-filled syringes of different diameters, providing stable support and positioning. Anti-slip convex plates 992 are arranged in a staggered manner on both sides of the trapezoidal inclined surface. The surface of the anti-slip convex plates 992 is compounded with a silicone friction layer, which increases the contact area with the outer wall of the pre-filled syringe. The silicone friction layer further improves the anti-slip performance, ensuring the stability of the pre-filled syringe during the spraying process and avoiding uneven spraying or positioning deviation caused by sliding.

[0051] As Figure 1 shown, the present utility model further includes a photoelectric position sensor 6 embedded at the bottom of the atomizer 5. The photoelectric position sensor 6 is embedded at the geometric center position of the atomizing nozzle 7 array. The photoelectric position sensor 6 can real-time monitor the relative position between the atomizer 5 and the pre-filled syringe, ensuring that the atomizing nozzle 7 array maintains the best spraying distance from the inner wall of the syringe, effectively avoiding problems such as uneven spraying or over-spraying caused by improper distance, and improving the spraying quality and efficiency.

[0052] Working process:

[0053] 1. System assembly: Place the base 1 on a stable workbench. The mounting frame 2 is connected to the base 1 through the driving mechanism 3. The atomization assembly is installed below the mounting frame 2 through the hydraulic cylinder 4 and is connected to the liquid storage tank 8. The placement positioning mechanisms 9 are respectively installed in the areas of the first station 100 and the second station 200.

[0054] 2. Placement of the pre-filled needle: Place the tip of the pre-filled needle downward, and place its syringe in the trapezoidal positioning cavity 991 between the placement positioning seats 99. Press down through the pressure rod 92, and transfer the downward pressure to the connecting plate 93. When the connecting plate 93 receives the downward pressure of the pressure rod 92, it will move vertically downward, causing the first sliding cylinder 931 to slide downward along the vertical rod, driving the connecting rod 95 to rotate, so as to drive the second sliding cylinder 96 to slide horizontally on the cross bar 97, driving the movable plate 98 and the positioning seat 99 to move synchronously. The trapezoidal positioning cavity 991 on the positioning seat 99 gradually approaches and clamps the pre-filled syringe, realizing the radial positioning of the pre-filled syringe.

[0055] 3. Silicone oil spraying: Start the driving mechanism 3 and the hydraulic cylinder 4, adjust the positions of the mounting frame 2 and the atomizer 5, move them to the first station 100, align them with the pre-filled syringe, then start the water pump, and the silicone oil enters the atomizer 5 through the infusion pipe and is sprayed out through the atomizing nozzle 7, and is evenly sprayed on the inner wall of the pre-filled needle.

[0056] 4. Station conversion: After the spraying is completed, turn off the water pump. The driving mechanism 3 drives the mounting bracket 2 and the atomizer 5 to move to the second station 200. Start the water pump and repeat step 3 to spray the pre-filled syringe needles at the second station 200. At the same time, the staff removes the pre-filled syringe barrels that have been sprayed well at the first station 100. After the spraying of the pre-filled syringe needles at the second station 200 is completed, turn off the water pump. The driving mechanism 3 drives the mounting bracket 2 and the atomizer 5 to continue moving to the first station 100. Start the water pump and perform the spraying work on the pre-filled syringe needles according to the above steps.

[0057] The silicone oil directly enters the inner part of the needle tube through the atomizing nozzle 7, covering the entire inner wall of the needle tube, reducing the friction between the drug and the inner wall of the needle tube, ensuring the smooth flow of the drug, and avoiding blockage or residue.

[0058] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, various changes and modifications can be made to the embodiments of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A silicone oil atomizing spraying system for a pre-filled needle, characterized in that, Including: A base (1), on the surface of which there are respectively arranged a first chute (11) and a second chute (12) that are parallel to each other, and at the top of the base there are a first working station (100) and a second working station (200) arranged adjacent to each other; A mounting frame (2), on both sides of which there are side plates (21) extending outwards; A driving mechanism (3), including a driving component arranged in the second chute (12) and a guiding and assisting component located in the first chute (11), the driving component is connected to one of the side plates (21) through a first slider (34), and the other side plate (21) is fixedly connected to the second slider (35) of the guiding and assisting component; An atomizing component, including an atomizer (5) installed below the mounting frame (2) through a hydraulic cylinder (4), the atomizer (5) is connected to a water pump arranged in a liquid storage tank (8) at the top of the mounting frame (2) through an infusion tube, and a plurality of atomizing nozzles (7) are arranged in an array at the bottom of the atomizer (5); Two symmetrically arranged placing and positioning mechanisms (9), which are respectively arranged in the areas of the first working station (100) and the second working station (200) for radially positioning a pre-filled syringe.

2. The silicone oil atomizing spraying system for pre-filled needles according to claim 1, wherein, The hydraulic cylinder (4) is centrally arranged at the top end of the mounting frame (2), and its piston rod extends downwards into the interior of the mounting frame (2), and the end is rigidly connected to the top of the atomizer (5).

3. The silicone oil atomizing spraying system for pre-filled needles according to claim 1, wherein, The driving component further includes: A stepping motor (31) fixedly installed in the second chute (12); A lead screw (32), one end of which is connected to the power output end of the stepping motor (31) through a coupling, and the other end is pivotally connected to the end wall of the second chute (12) through a bearing seat; A pair of first guiding rods (33) arranged in parallel, the first slider (34) fixedly connected to the corresponding side plate (21) at the bottom by screws is threadedly sleeved on the surface of the lead screw (32) and passes through the pair of first guiding rods (33) to form a two-way constrained sliding fit.

4. The silicone oil atomization spraying system for pre-filled needles according to claim 1, characterized in that The guiding and assisting component further includes a second guiding rod (36) horizontally fixed in the first chute (11), and the second slider (35) screwed and fixed to the corresponding side plate (21) at the bottom penetrates through the second guiding rod (36) to form a linear sliding pair.

5. The silicone oil atomization spraying system for a pre-filled needle according to claim 1, wherein The placing and positioning mechanism (9) includes: A placing box (91) positioned and installed on the surface of the base (1), the placing box (91) is composed of a box body welded at the bottom and a detachable and fitted cover plate, through holes (911) are symmetrically arranged on the cover plate, and a cross bar (97) is horizontally arranged inside the box body; A vertical guiding component, including a pressing rod (92) guiding and sliding along the geometric central axis of the cover plate, the top end of the pressing rod (92) is rigidly connected to a rectangular pressing plate (921), and the bottom end is bolted and fastened to a connecting plate (93); And a pair of transmission and positioning components mirror-symmetrically distributed inside the box body.

6. The silicone oil atomizing spraying system for pre-filled needles according to claim 5, characterized in that, A pair of the transmission and positioning components includes: A pair of vertical rods (94) are fixedly mounted vertically on the inner wall of the box body, and a first slide cylinder (931) is coaxially sleeved on the periphery of the vertical rods (94). The pair of first slide cylinders (931) are respectively fixedly connected to two ends of the connecting plate (93), and the front surfaces of the first slide cylinders (931) are rotatably connected to connecting rods (95); A pair of second slide cylinders (96) slidably sleeved on the cross bar (97), the front faces of the pair of second slide cylinders (96) being rotatably connected to the ends of the pair of connecting rods (95) respectively; A pair of movable plates (98) are fixedly connected to the top of a pair of second slide cylinders (96), and a positioning seat (99) is provided inside the pair of movable plates (98).

7. The silicone oil atomizing spraying system for pre-filled needles according to claim 6, wherein, Compression springs (971) are sleeved on both sides of the cross bar (97), one end of a pair of compression springs (971) are respectively welded to the side walls of the box body, and the other ends are respectively fixedly connected to the outer sides of a pair of second slide cylinders (96), forming an elastic reset device.

8. The silicone oil atomizing spraying system for pre-filled needles according to claim 6, wherein, The working surface of the positioning seat (99) is provided with equally spaced trapezoidal positioning cavities (991), and both sides of the trapezoidal inclined surface are provided with staggeredly distributed anti-slip convex plates (992).

9. The silicone oil atomizing spraying system for pre-filled needles according to claim 1, wherein It also includes a photoelectric position sensor (6) embedded in the bottom of the atomizer (5), and the photoelectric position sensor (6) is embedded in the geometric center position of the atomizing nozzle (7) array.

Images