Sterile filling device

Abstract

The utility model discloses a sterile filling device which comprises a driving part and a plurality of filling needle assemblies, the filling needle assemblies are located in a clean area, each filling needle assembly comprises a needle tube and an ejector pin, the ejector pins are arranged in the needle tubes in a lifting mode, the sterile filling device further comprises a transmission mechanism, a rotating part and a supporting seat, the driving part is located outside the clean area, and the rotating part is located outside the clean area. The rotating piece is rotatably arranged on the supporting seat, the driving piece is connected with the rotating piece through a transmission mechanism and used for driving the rotating piece to rotate, the rotating piece is provided with a plurality of rotating jacking parts in the direction of a rotating shaft, and the rotating jacking parts are movably connected with the ejector pins in a one-to-one correspondence mode. And the rotating piece is used for driving the ejector pin to lift during rotation. The ejector pin lifting mechanism has the advantage of high ejector pin lifting stability.

Description

Technical Field

[0001] This utility model relates to the field of food and pharmaceutical packaging technology, specifically to an aseptic filling device. Background Technology

[0002] Ejector needles are typically used for filling highly viscous liquids to prevent filament breakage during filling. Existing ejector needles are directly driven by cylinders, with a cylinder mounted directly at the tip. The ejector needle is directly connected to the cylinder, and the cylinder's movement drives the ejector needle to extend and retract, achieving the filament breakage function. This driving method requires one cylinder per ejector needle, necessitating multiple cylinders for multi-head filling. In pharmaceutical equipment, considering the risk of cylinder leakage, cylinders are not permitted in Class A clean areas. Therefore, existing ejector needles are unsuitable for pharmaceutical equipment. The improved design places the cylinder under the tabletop, driving the ejector needle's lifting and lowering via a transmission mechanism. A conventional design, for example, connects the cylinder to a lifting shaft, which in turn connects to a lifting plate, with the ejector needle positioned on the lifting plate. This lifting method requires a guide for the lifting shaft, and during lifting, ejector needles at different positions on the lifting plate can exhibit height differences, leading to unstable lifting. In addition, when filling needles with high-viscosity liquids, the inside of the needle needs to be disassembled, cleaned, and then sterilized at high temperature. Therefore, the cylinder needs to be removed first, the needle cleaned and sterilized, and then the cylinder reinstalled. The whole process is cumbersome and inefficient. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an aseptic filling device with high stability of needle lifting.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] An aseptic filling device includes a drive unit and multiple filling needle assemblies. The filling needle assemblies are located within a clean area and include a needle tube and a ejector pin. The ejector pin is vertically and movably disposed within the needle tube. The device also includes a transmission mechanism, a rotating component, and a support base. The drive unit is located outside the clean area, and the rotating component is rotatably disposed on the support base. The drive unit is connected to the rotating component via the transmission mechanism and is used to drive the rotating component to rotate. The rotating component has multiple rotating lifting parts along the rotation axis, and the multiple rotating lifting parts are movably connected to multiple ejector pins in a one-to-one correspondence. The rotating component is used to drive the ejector pins to rise and fall during rotation.

[0006] As a further improvement to the above technical solution:

[0007] Multiple ejector pins are movably connected to the rotating component via corresponding lifting assemblies. Each lifting assembly includes a fixed seat, an adjusting seat, a pull rod, and an elastic element. The fixed seat is mounted on a support base, and the adjusting seat is threadedly connected to the fixed seat. The pull rod is vertically and vertically inserted into the adjusting seat and the fixed seat. The elastic element is sleeved on the pull rod and located between the adjusting seat and the fixed seat. One end of the pull rod is movably connected to the rotating lifting part, and the other end is detachably connected to the ejector pin.

[0008] The support base has bearing seats at both ends, and the rotating component is connected to the bearing seats at both ends.

[0009] The transmission mechanism includes a lifting shaft and a swing rod. One end of the lifting shaft is connected to the driving component, and the other end is connected to the swing rod. The other end of the swing rod is connected to the rotating component.

[0010] The rotating lifting part includes a limiting groove and a clearance groove arranged sequentially along the circumference. The top of the pull rod is provided with a limiting block. The pull rod is movably inserted into the clearance groove. The limiting block is located in the limiting groove and is used to abut against the bottom surface of the limiting groove.

[0011] The bottom of the pull rod is detachably connected to a hook, and the ejector pin is engaged with the hook.

[0012] The aseptic filling device also includes a mounting base, which has multiple mounting slots, and the multiple needles are correspondingly locked in the mounting slots.

[0013] The mounting base is located on the support base.

[0014] The mounting slot is equipped with a limiting baffle to prevent the needle from tipping over, and the limiting baffle is detachably connected to the mounting base.

[0015] The injection needle assembly also includes a sealing ring, which is located at the top of the needle tube. The ejector pin is slidably disposed within the sealing ring and the needle tube. The needle tube is provided with an input channel and an output channel. The ejector pin is used to control the opening and closing of the input channel and the output channel.

[0016] Compared with the prior art, the advantages of this utility model are:

[0017] The aseptic filling device disclosed in this utility model has multiple ejector pins arranged parallel to the rotation axis of the rotating component, which converts the rotational motion of the rotating component into lifting motion. There is no need to set a guide for lifting. At the same time, the rotation angle of each ejector pin is the same, so the lifting height is the same. This avoids the height difference of each ejector pin during the lifting process due to the lack of lifting guide, and improves the stability of the lifting process. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the aseptic filling device of this utility model in the filling state.

[0019] Figure 2 yes Figure 1 Enlarged structural diagram at point A in the middle.

[0020] Figure 3 yes Figure 2 A magnified structural diagram at point B in the middle.

[0021] Figure 4 This is a three-dimensional structural diagram of the present invention in its non-filling state.

[0022] Figure 5 This is a cross-sectional structural diagram of the present invention in the filling state.

[0023] Figure 6 This is a cross-sectional structural diagram of the present invention in its non-filling state.

[0024] Figure 7 This is a three-dimensional structural diagram of the disassembled injection needle assembly in this utility model.

[0025] Figure 8 This is a cross-sectional structural diagram of the pressure-lifting component in this utility model.

[0026] Figure 9 This is a cross-sectional structural diagram of the injection needle assembly in this utility model.

[0027] The labels in the diagram represent: 1. Filling needle assembly; 11. Needle tube; 12. Input channel; 13. Ejector pin; 14. Sealing ring; 15. Output channel; 2. Drive component; 3. Transmission mechanism; 31. Lifting shaft; 32. Swing rod; 4. Mounting base; 41. Mounting groove; 42. Limiting baffle; 6. Rotating component; 61. Limiting groove; 62. Clearance groove; 63. Rotating lifting part; 7. Support base; 71. Bearing seat; 8. Pressure lifting assembly; 81. Fixed base; 82. Adjusting base; 83. Pull rod; 831. Limiting block; 832. Hook; 84. Elastic component. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] Figures 1 to 9 This invention illustrates an embodiment of the aseptic filling device. The aseptic filling device of this embodiment includes a drive unit 2 and multiple filling needle assemblies 1. The filling needle assembly 1 is located within a clean area and includes a needle tube 11 and a ejector pin 13. The ejector pin 13 is vertically and movably disposed within the needle tube 11. It also includes a transmission mechanism 3, a rotating component 6, and a support base 7. The drive unit 2 is located outside the clean area. The rotating component 6 is rotatably disposed on the support base 7. The drive unit 2 is connected to the rotating component 6 via the transmission mechanism 3 and is used to drive the rotating component 6 to rotate. The rotating component 6 has multiple rotating lifting parts 63 along the rotation axis. The multiple rotating lifting parts 63 are movably connected to the multiple ejector pins 13 in a one-to-one correspondence. The rotating component 6 is used to drive the ejector pins 13 to rise and fall during rotation.

[0033] The filling process of this aseptic filling device is as follows: the drive component 2 drives the rotating component 6 to rotate via the transmission mechanism 3. When the rotating component 6 rotates, it drives the ejector pin 13, which is movably connected to the rotating lifting part 63, to rise and fall. The ejector pin 13 rises, as... Figure 5 As shown, syringe 11 begins filling, and ejector pin 13 descends, as... Figure 6 As shown, the filling port of syringe 11 is sealed, and syringe 11 stops filling.

[0034] The arrangement of multiple ejector pins 13 in this aseptic filling device is parallel to the rotation axis of the rotating component 6. The rotational motion of the rotating component 6 is converted into lifting motion, eliminating the need for a guide for lifting. At the same time, the rotation angle of each ejector pin 13 is consistent, so the lifting height is consistent. This avoids height differences between ejector pins 13 during the lifting process due to the lack of a lifting guide, thus improving the stability of the lifting process.

[0035] Furthermore, such as Figure 2 , Figure 3 and Figure 8 As shown, in this embodiment, multiple ejector pins 13 are movably connected to the rotating component 6 through corresponding lifting components 8. The lifting component 8 includes a fixed seat 81, an adjusting seat 82, a pull rod 83, and an elastic element 84. The fixed seat 81 is disposed on the support seat 7. The adjusting seat 82 is threadedly connected to the fixed seat 81. The pull rod 83 is vertically inserted into the adjusting seat 82 and the fixed seat 81. The elastic element 84 is sleeved on the pull rod 83 and located between the adjusting seat 82 and the fixed seat 81. One end of the pull rod 83 is movably connected to the rotating lifting part 63, and the other end is detachably connected to the ejector pin 13. When the pull rod 83 rises, the elastic element 84 is in a compressed state. When the pull rod 83 falls, the elastic element 84 gives the pull rod 83 a rebound force, causing the pull rod 83 and the ejector pin 13 connected to the pull rod 83 to press down on the needle tube 11, quickly stopping the filling of the needle tube 11. Since the adjusting seat 82 is threadedly connected to the fixed seat 81, the degree of compression of the elastic element 84 can be adjusted by turning the adjusting seat 82, thereby adjusting the rebound force on the pull rod 83 and the ejector pin 13, which facilitates the ejector pin 13 to stop the filling of the needle tube 11.

[0036] Furthermore, such as Figure 2 As shown, in this embodiment, the support base 7 has bearing seats 71 at both ends, and the rotating component 6 is connected to the bearing seats 71 at both ends. The bearing shaft 71 provides further support for the rotating component 6, which helps to maintain the stability of the rotating component 6 during rotation, thereby improving the stability of the pull rod 83 and the ejector pin 13 during lifting. Preferably, the rotating component 6 is a rotating shaft.

[0037] Furthermore, such as Figure 1 and Figure 2 As shown, in this embodiment, the transmission mechanism 3 includes a lifting shaft 31 and a swing rod 32. One end of the lifting shaft 31 is connected to the driving member 2, and the other end is connected to the swing rod 32. The other end of the swing rod 32 is connected to the rotating member 6. The driving member 2 drives the lifting shaft 31 to move up and down, thereby causing the swing rod 32 to swing, which in turn causes the rotating member 6 to rotate. The structure is simple.

[0038] Furthermore, such as Figure 3 and Figure 8 As shown, in this embodiment, the rotating lifting part 63 includes a limiting groove 61 and a clearance groove 62 arranged sequentially along the circumference. A limiting block 831 is provided at the top of the pull rod 83. The pull rod 83 movably passes through the clearance groove 62, and the limiting block 831 is located within the limiting groove 61, abutting against the bottom surface of the limiting groove 61. The limiting groove 61 is used to hold the limiting block 831 at the top of the pull rod 83 to drive its lifting and lowering. The clearance groove 62 provides clearance for the lifting and lowering of the pull rod 83.

[0039] Furthermore, such as Figure 3As shown, in this embodiment, the bottom of the pull rod 83 is detachably connected to a hook 832, and the pin 13 is engaged with the hook 832. This structural connection facilitates disassembly and replacement.

[0040] Furthermore, such as Figure 3 and Figure 7 As shown, in this embodiment, the aseptic filling device also includes a mounting base 4, which has multiple mounting slots 41 on it. Multiple needles 11 are correspondingly engaged in the mounting slots 41, facilitating the installation and removal of the needles 11.

[0041] Furthermore, such as Figure 3 and Figure 7 As shown, in this embodiment, the mounting base 4 is disposed on the support base 7. The structure is compact.

[0042] Furthermore, such as Figure 3 and Figure 7 As shown, in this embodiment, the mounting groove 41 is equipped with a limiting baffle 42 to prevent the needle tube 11 from tipping over. The limiting baffle 42 is detachably connected to the mounting base 4. Under normal conditions, the limiting baffle 42 can fix the installation of the needle tube 11, preventing the needle tube 11 from tipping over and loosening from one side of the mounting groove 41. Since the limiting baffle 42 is detachably connected to the mounting base 4, when it is necessary to replace the needle tube 11, the limiting baffle 42 can be removed directly to take out the needle tube 11. Disassembly and assembly are very convenient.

[0043] Furthermore, such as Figure 9 As shown, in this embodiment, the filling needle assembly 1 further includes a sealing ring 14, which is disposed at the top of the needle tube 11. A ejector pin 13 is slidably disposed within the sealing ring 14 and the needle tube 11. The needle tube 11 has an input channel 12 and an output channel 15. The ejector pin 13 controls the connection and disconnection between the input channel 12 and the output channel 15. When the ejector pin 13 rises, the input channel 12 and the output channel 15 are connected, allowing the filling liquid to enter through the input channel 12 and exit through the output channel. When the ejector pin 13 descends, it seals the output channel 15, disconnecting it from the input channel 12 and stopping the filling process. The sealing ring 14 ensures the sealing of the filling process.

[0044] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. An aseptic filling device, comprising a drive unit (2) and a plurality of filling needle assemblies (1), wherein the filling needle assembly (1) is located in a clean area, the filling needle assembly (1) comprising a needle tube (11) and a ejector pin (13), wherein the ejector pin (13) is vertically and flexibly disposed within the needle tube (11), characterized in that: It also includes a transmission mechanism (3), a rotating component (6) and a support base (7). The driving component (2) is located outside the clean area. The rotating component (6) is rotatably mounted on the support base (7). The driving component (2) is connected to the rotating component (6) through the transmission mechanism (3) and is used to drive the rotating component (6) to rotate. The rotating component (6) has multiple rotating lifting parts (63) along the rotation axis. The multiple rotating lifting parts (63) are movably connected to multiple ejector pins (13) in a one-to-one correspondence. The rotating component (6) is used to drive the ejector pins (13) to rise and fall when rotating.

2. The aseptic filling apparatus according to claim 1, characterized in that: Multiple ejector pins (13) are movably connected to the rotating part (6) via corresponding lifting components (8). The lifting component (8) includes a fixed seat (81), an adjusting seat (82), a pull rod (83), and an elastic element (84). The fixed seat (81) is mounted on the support seat (7). The adjusting seat (82) is threadedly connected to the fixed seat (81). The pull rod (83) is vertically inserted into the adjusting seat (82) and the fixed seat (81). The elastic element (84) is sleeved on the pull rod (83) and located between the adjusting seat (82) and the fixed seat (81). One end of the pull rod (83) is movably connected to the rotating lifting part (63), and the other end is detachably connected to the ejector pin (13).

3. The aseptic filling apparatus according to claim 1, characterized in that: The support base (7) is provided with bearing seats (71) at both ends, and the rotating part (6) is connected to the bearing seats (71) at both ends respectively.

4. The aseptic filling apparatus according to claim 1, characterized in that: The transmission mechanism (3) includes a lifting shaft (31) and a swing rod (32). One end of the lifting shaft (31) is connected to the driving member (2), and the other end is connected to the swing rod (32). The other end of the swing rod (32) is connected to the rotating member (6).

5. The aseptic filling apparatus according to claim 2, characterized in that: The rotating lifting part (63) includes a limiting groove (61) and a clearance groove (62) arranged sequentially along the circumference. The top of the pull rod (83) is provided with a limiting block (831). The pull rod (83) is movably inserted into the clearance groove (62). The limiting block (831) is located in the limiting groove (61) and is used to abut against the bottom surface of the limiting groove (61).

6. The aseptic filling apparatus according to claim 5, characterized in that: The bottom of the pull rod (83) is detachably connected to a hook (832), and the pin (13) is engaged with the hook (832).

7. The aseptic filling apparatus according to any one of claims 1 to 6, characterized in that: The aseptic filling device also includes a mounting base (4), which has multiple mounting slots (41) on it, and multiple needle tubes (11) are correspondingly locked in the mounting slots (41).

8. The aseptic filling apparatus according to claim 7, characterized in that: The mounting base (4) is located on the support base (7).

9. The aseptic filling apparatus according to claim 7, characterized in that: The mounting groove (41) is equipped with a limiting baffle (42) to prevent the needle tube (11) from tipping over. The limiting baffle (42) is detachably connected to the mounting base (4).

10. The aseptic filling apparatus according to any one of claims 1 to 6, characterized in that: The injection needle assembly (1) also includes a sealing ring (14), which is located at the top of the needle tube (11). The ejector pin (13) is slidably disposed within the sealing ring (14) and the needle tube (11). The needle tube (11) is provided with an input channel (12) and an output channel (15). The ejector pin (13) is used to control the opening and closing of the input channel (12) and the output channel (15).

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