A pre-filled needle for a locking device

Abstract

The utility model relates to pre -filling syringe production technical field, concretely for a kind of pre -filling needle centering locking device, including fixed frame, fixed frame is equipped with centering plate, first placement hole is passed through and is established in centering plate, centering plate is connected with sliding plate, second placement hole is passed through and is established in sliding plate, fixed frame side is equipped with the locking mechanism of cooperation with sliding plate, the utility model has realized the in situ unlocking and locking of centering plate on equipment, without removing centering plate from equipment and shifting to external operation, completely saved the redundant step of " removal-unlocking-put back " of traditional split type clamping mechanism, substantially shorten the feeding and discharging operation cycle, significantly improve the overall working efficiency of equipment;Meanwhile, centering plate does not need to be frequently disassembled and shifted, effectively avoid the positioning accuracy deviation caused by shifting process, guarantee pre -filling needle subsequent filling quality, also reduce the risk of component knock damage, reduce production maintenance cost, improve the stability and reliability of production process.

Description

Technical Field

[0001] This utility model relates to the field of pre-filled syringe manufacturing technology, specifically a pre-filled syringe center locking device. Background Technology

[0002] In the pre-filled needle production process, the chuck loading station of the filling equipment is a key link to ensure production continuity and efficiency. The existing pre-filled needle filling equipment uses a split clamping mechanism at the chuck loading station. Its core component, the pre-filled needle centering clamping fixture, needs to be removed from the equipment and transferred to the outside of the isolator equipment during loading and unloading operations to complete the unlocking operation.

[0003] This operating method has significant drawbacks: firstly, the loading and unloading process requires an additional "remove-unlock-reinstall" step, greatly extending the single operation cycle and severely restricting the overall production efficiency of the equipment; secondly, frequent transfer of the centering plate can easily lead to positioning accuracy deviations, affecting the subsequent filling quality of the pre-filled needles, while also increasing the risk of component damage from impacts, which is detrimental to production stability and cost control. Therefore, there is an urgent need for a mechanism that can center and lock the pre-filled needles in place on the equipment to solve the problems of low efficiency and poor stability of the existing technology. Utility Model Content

[0004] The purpose of this invention is to provide a pre-charge locking device to solve the technical problems mentioned in the background.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows: A precharge needle centering locking device includes a fixed frame with a hollow centering plate mounted on the fixed frame. The centering plate has several first placement holes for placing precharge needles. A sliding plate is slidably connected to the inner cavity of the centering plate. The sliding plate has several second placement holes that correspond one-to-one with the first placement holes, and one end of the sliding plate protrudes from the side wall of the centering plate. A locking mechanism that cooperates with the sliding plate is installed on one side of the fixed frame. The locking mechanism is used to push the sliding plate to slide, causing the second placement holes and the first placement holes to be misaligned and locking the precharge needles.

[0006] Preferably, the locking mechanism includes a guide block fixed on a fixed frame, a limiting groove is formed at the bottom of the guide block, a slider that is adapted to the limiting groove is slidably connected to the bottom of the guide block, a rotating rod is rotatably connected to the top of the guide block, one end of the rotating rod is inserted into the slider and a cam is installed thereon, and a through groove that cooperates with the cam is formed inside the slider.

[0007] Preferably, the limiting groove protrudes symmetrically at the middle part of the inner wall on both sides to form a limiting block, and the block is recessed inward relative to the inner wall on both sides to form a groove that cooperates with the limiting block.

[0008] Preferably, a handle is mounted on the top of the rotating rod.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model's pre-filled needle centering locking device, through the integrated design of a fixed frame, centering plate, sliding plate, and locking mechanism, achieves in-situ unlocking and locking of the centering plate on the equipment. This eliminates the need to remove the centering plate from the equipment and transfer it to an external operation, completely eliminating the redundant "remove-unlock-reinstall" steps of traditional split clamping mechanisms. This significantly shortens the loading and unloading operation cycle and substantially improves the overall working efficiency of the equipment. Simultaneously, the centering plate does not require frequent disassembly and transfer, effectively avoiding positioning accuracy deviations caused by the transfer process, ensuring the subsequent filling quality of the pre-filled needle, reducing the risk of component damage from impacts, lowering production and maintenance costs, and improving the stability and reliability of the production process. Attached Figure Description

[0010] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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 these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the centering and locking device of this utility model; Figure 2 This is a schematic diagram of the centering plate in the centering locking device of this utility model; Figure 3 This is a cross-sectional view of the centering plate in the centering locking device of this utility model. Figure 4 This is a schematic diagram of the locking mechanism in the centering and locking device of this utility model.

[0012] The attached diagram lists the components represented by each number as follows: 1. Fixing frame; 2. Centering plate; 3. First placement hole; 4. First placement hole; 5. Second placement hole; 6. Locking mechanism; 61. Guide block; 62. Limiting groove; 63. Sliding block; 64. Rotating rod; 65. Cam; 66. Limiting block; 67. Groove; 68. Handle. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0014] like Figure 1-4 As shown: Embodiment 1 of this utility model is as follows: A pre-charge needle centering locking device includes a fixed frame 1, on which a hollow centering plate 2 is mounted. The centering plate 2 has several first placement holes 3 for placing the pre-charge needle. A sliding plate 4 is slidably connected to the inner cavity of the centering plate 2. The sliding plate 4 has several second placement holes 5 that correspond one-to-one with the first placement holes 3. One end of the sliding plate 4 protrudes from the side wall of the centering plate 2. A locking mechanism 6 that cooperates with the sliding plate 4 is mounted on one side of the fixed frame 1. The locking mechanism is used to push the sliding plate 4 to slide, causing the second placement holes 5 and the first placement holes 3 to be misaligned and to lock the pre-charge needle.

[0015] As described above, the pre-filled needle centering locking device of this utility model achieves in-situ unlocking and locking of the centering plate on the equipment through the integrated design of the fixed frame, centering plate, sliding plate and locking mechanism. It eliminates the need to remove the centering plate from the equipment and transfer it to an external operation, completely eliminating the redundant steps of "removal-unlocking-reinstallation" of the traditional split clamping mechanism, greatly shortening the loading and unloading operation cycle and significantly improving the overall working efficiency of the equipment. At the same time, the centering plate does not need to be frequently disassembled and transferred, effectively avoiding positioning accuracy deviation caused by the transfer process, ensuring the subsequent filling quality of the pre-filled needle, reducing the risk of component collision damage, reducing production and maintenance costs, and improving the stability and reliability of the production process.

[0016] Specifically, the locking mechanism 6 includes a guide block 61 fixed on the fixed frame 1. A limiting groove 62 is provided at the bottom of the guide block 61. A slider 63 that is compatible with the limiting groove 62 is slidably connected to the bottom of the guide block 61. A rotating rod 64 is rotatably connected to the top of the guide block 61. One end of the rotating rod 64 is inserted into the slider 62 and a cam 65 is installed. A through groove that cooperates with the cam 65 is provided inside the slider 62.

[0017] As described above, the locking mechanism 6 adopts a combination structure of guide block 61, slider 63, rotating rod 64 and cam 65. The overall size is small and compact, and it does not require much equipment space during installation. It can be flexibly adapted to pre-filled needle filling equipment of different specifications, and has strong adaptability. The cooperation and transmission between cam 65 and slider 63 can smoothly convert the rotational motion of rotating rod 64 into the linear motion of slider 63, ensuring the stable displacement of sliding plate 4 and avoiding transmission jamming. Moreover, when cam 65 is in the locked position, it can use the dead point characteristic of cam to fix the unlocked position, effectively preventing the slider 63 from accidentally sliding due to equipment vibration, external force contact and other factors, ensuring the stability of the pre-filled needle locking state, avoiding the pre-filled needle from falling off or shifting, and improving operational safety.

[0018] Specifically, the limiting groove 62 protrudes symmetrically from the middle part of the inner wall on both sides to form a limiting block 66, and the block 63 is recessed inward from the inner wall on both sides to form a groove 67 that cooperates with the limiting block 66.

[0019] As described above, the limiting blocks 66, which are symmetrically protruding from the middle of the inner walls on both sides of the limiting groove 62, cooperate with the grooves 67 formed by the inward indentation of the slider 63 on both sides. This precisely limits the sliding stroke of the slider 63 within the limiting groove 62, preventing displacement deviation due to overtravel. This ensures that the sliding plate 4 drives the second placement hole 5 to align precisely with the first placement hole 3, guaranteeing the reliability of the pre-charge pin locking and unlocking. At the same time, this limiting structure effectively prevents the slider 63 from disengaging from the limiting groove 62 during sliding, avoiding component collision damage, reducing the failure rate of the mechanism, extending the service life of the locking mechanism 6, and reducing maintenance frequency and cost.

[0020] Specifically, a handle 68 is mounted on the top of the rotating rod 64.

[0021] As described above, the handle installed on the top of the rotating rod 64 extends the operating arm of the rotating rod 64. According to the lever principle, when the operator rotates the rotating rod 64, only a small force is needed to drive the cam 65 to rotate and drive the slider 63 to slide, which greatly reduces the operator's workload. It is especially suitable for production scenarios with high-frequency loading and unloading, and improves the operator's work comfort. At the same time, the handle provides the operator with a clear and convenient point of force application, which makes it easy for the operator to accurately control the rotation angle of the rotating rod 64, such as accurately achieving a 90° counterclockwise rotation. This ensures the consistency of each locking or unlocking operation and avoids abnormal operation of the mechanism due to deviations in operating force or angle, thereby improving the controllability and stability of the operation.

[0022] The specific working process of the above-mentioned centering and locking device is as follows: When the centering plate needs to be unlocked to place the pre-charge needle, the operator turns the handle 4 clockwise. The handle 4 drives the rotating shaft 2 to rotate synchronously. Since the two sections of the rotating shaft 2 are not concentric, a lateral thrust will be generated on the slider 3 during the rotation, causing the slider 3 to move in a specific direction. When the handle 4 is turned to the preset position, the slider 3 reaches the unlocking stroke, and the centering plate is unlocked and opened. At this time, the operator can manually put the pre-charge needle into the centering plate.

[0023] When it is necessary to lock the centering plate to fix the pre-filled needle and achieve automatic centering, the operator turns the handle 4 counterclockwise by about 90°. The rotating shaft 2 rotates in the opposite direction, and the pushing force on the slider 3 is converted into a pulling force, which drives the slider 3 to move backward to the locking stroke position. During the backward movement of the slider 3, the centering plate closes and locks, so that the pre-filled needle is automatically centered and fixed in the centering plate. At the same time, the eccentric structure of the rotating shaft 2, combined with the dead point principle of the cam, stably locks the slider 3 in the locking position, preventing the centering plate from loosening accidentally and ensuring the stability of the pre-filled needle fixation.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., 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 connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that modifications may be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pre-charge center locking device, characterized in that: The device includes a fixed frame (1), on which a hollow centering plate (2) is installed. The centering plate (2) has several first placement holes (3) for placing pre-charge needles. A sliding plate (4) is slidably connected to the inner cavity of the centering plate (2). The sliding plate (4) has several second placement holes (5) that correspond one-to-one with the first placement holes (3). One end of the sliding plate (4) protrudes from the side wall of the centering plate (2). A locking mechanism (6) that cooperates with the sliding plate (4) is installed on one side of the fixed frame (1). The locking mechanism is used to push the sliding plate (4) to slide so that the second placement holes (5) and the first placement holes (3) are misaligned and the pre-charge needles are locked.

2. The pre-charge center locking device according to claim 1, characterized in that: The locking mechanism (6) includes a guide block (61) fixed on a fixed frame (1). A limiting groove (62) is provided at the bottom of the guide block (61). A slider (63) that is compatible with the limiting groove (62) is slidably connected to the bottom of the guide block (61). A rotating rod (64) is rotatably connected to the top of the guide block (61). One end of the rotating rod (64) is inserted into the slider (63) and a cam (65) is installed thereon. A through groove that cooperates with the cam (65) is provided inside the slider (63).

3. A pre-charge center locking device according to claim 2, characterized in that: The limiting groove (62) protrudes symmetrically from the middle part of the inner wall on both sides to form a limiting block (66), and the block (63) is recessed inward relative to the inner wall on both sides to form a groove (67) that cooperates with the limiting block (66).

4. A pre-charge center locking device according to claim 2, characterized in that: A handle (68) is mounted on the top of the rotating rod (64).

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