Plug taking and adding device

Abstract

The utility model relates to a plug taking and adding device which comprises a plug taking arm which is configured to be capable of lifting and rotating, and the free end of the plug taking arm is provided with a positioning hole matched with a pre-filling needle rubber plug; the plug adding arm is configured to be capable of ascending, descending and rotating, a suction nozzle is arranged at the free end of the plug adding arm, the suction nozzle is configured to be capable of being attached to the needle pre-filling opening to form sealing, and an air hole used for vacuumizing is formed in the suction nozzle; the plug guide cylinder is arranged in the suction nozzle and is used for guiding the pre-filling needle rubber plug to enter the pre-filling needle; and the plug inserting rod is configured to do lifting motion in the axial direction of the plug guiding barrel. The plug taking and adding device designed by the utility model can be suitable for the plug adding work of different medicament bottles through the structural design, and meanwhile, due to the vacuum auxiliary plug adding, the plug adding efficiency and precision are improved, the plug adding failure rate is reduced, and the problems of rubber plug deviation, bounce and the like are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of plugging equipment, in particular to a plug removing and plugging device. Background Art

[0002] In the prior art, prefilled needles are a device that prefills drugs into syringes. With its advantages of ease of use, accurate dosage, and reduced pollution, they have been widely used in medical fields such as vaccination and insulin injection. In the production process of prefilled needles, in order to seal the drugs and maintain their sterility, a rubber plug needs to be inserted into the syringe. At present, the relevant technology generally adopts a method of inserting the rubber plug from the plug tray into the prefilled needle by a push rod.

[0003] However, this stoppering method has some limitations: first, the thrust of the ejector rod may cause the stopper to shift during the insertion process, affecting the sealing of the stopper and ultimately resulting in a high stoppering failure rate; second, this type of stoppering equipment has a single function and is usually only suitable for specific types of medicine bottles, such as prefilled needles, but not other types of medicine bottles such as vials. Summary of the invention

[0004] In order to solve the above problems, the utility model provides a plugging removal and plugging device which improves the plugging efficiency and accuracy and reduces the plugging failure rate.

[0005] In order to achieve the above-mentioned purpose, the plugging and plugging device designed by the utility model comprises:

[0006] A plug removal arm, which is configured to be liftable and rotatable, and a positioning hole is provided at the free end of the plug removal arm to cooperate with the prefilled needle rubber plug;

[0007] A stopper arm, which is configured to be liftable and rotatable, a suction nozzle is provided at the free end of the stopper arm, the suction nozzle is configured to be able to fit the pre-filled needle port to form a seal, and an air hole for vacuuming is provided on the suction nozzle;

[0008] A plug guide cylinder is arranged inside the suction nozzle and is used to guide the prefilled needle plug into the prefilled needle;

[0009] A plug rod, configured to perform lifting and lowering motion along the axial direction of the guide plug cylinder;

[0010] Wherein, when the plug removing arm and the plug adding arm move to the plug adding position, the central axes of the positioning hole, the plug guide cylinder and the plug insertion rod remain concentrically aligned.

[0011] In order to achieve stable vacuuming during the plugging process, a cavity communicating with the prefilling needle is separated from at least a portion of the area between the hole wall of the suction nozzle and the outer surface of the plug guide tube, and the cavity is communicated with the air hole.

[0012] In order to ensure the sealing between the suction nozzle and the guide plug tube, at least one annular sealing groove is provided on the hole wall of the suction nozzle, and a sealing ring is provided in the annular sealing groove, and the sealing ring is in sealing contact with the outer surface of the guide plug tube.

[0013] In order to facilitate replacement or cleaning, the guide plug cylinder is detachably sealed and matched with the suction nozzle.

[0014] In order to guide the rubber plug to accurately enter the predetermined position in the prefilled needle, the bottom end of the plug guide cylinder has an extension portion extending beyond the suction nozzle, and the extension portion is integrally formed with the plug guide cylinder or detachably matched with the plug guide cylinder.

[0015] In order to transport the rubber plug from the rubber plug pot to the positioning hole, a rubber plug pot is also included. A plug ejector rod is provided at the discharge end of the rubber plug pot. When the plug removal arm moves to the plug removal position, the plug ejector rod is configured to push the pre-filling needle rubber plug into the positioning hole. The positioning hole and the pre-filling needle rubber plug have an interference fit.

[0016] A further solution is that a plug guide hole is provided at the discharge end of the plug pot, the plug guide hole is used to receive the pre-filled needle plug and is coaxially arranged with the plug pusher rod, one end of the plug pusher rod is inserted into the plug guide hole, and the other end is connected to the output end of the driving cylinder.

[0017] In order to improve the efficiency of plugging, the free end of the plug removal arm is provided with a clearance gap connected to the positioning hole, the opening of the clearance gap faces the area where the plugging position is located, and the opening width of the clearance gap is greater than the diameter of the plug rod.

[0018] In order to simplify the air path, an air channel connected to the air hole is provided in the plugging arm, and the air channel is used to communicate with an external vacuum pumping device.

[0019] The stopper removing and stoppering device designed by the utility model can be suitable for stoppering work of different medicine bottles through structural design. At the same time, the vacuum-assisted stoppering not only improves the stoppering efficiency and accuracy, reduces the stoppering failure rate, solves problems such as stopper deviation and bouncing, but also enhances the sealing of the stoppering, can quickly and accurately complete the stopper removing and stoppering operations, significantly improves the stoppering efficiency, and meets the needs of large-scale production. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the plug removing and plugging device provided in an embodiment of the present application;

[0021] Figure 2 is a schematic structural diagram of another viewing angle of the plug removing and plugging device provided in an embodiment of the present application;

[0022] Figure 3 yes Figure 1 A top view of

[0023] Figure 4 yes Figure 3 Sectional view at AA;

[0024] Figure 5 yes Figure 3 Sectional view at the middle BB;

[0025] Figure 6 This is a schematic diagram of the matching structure between the guide plug tube and the suction nozzle in the embodiment of the present application;

[0026] Figure 7 It is a schematic diagram of the structure of the extension part provided in the embodiment of the present application.

[0027] Among them: plug removal arm 10, positioning hole 11, clearance gap 12, plug adding arm 20, air channel 21, suction nozzle 30, air hole 31, cavity 32, annular sealing groove 33, sealing ring 34, plug guide cylinder 40, extension part 41, plug rod 50, rubber plug pot 60, plug guide hole 61, plug push rod 70, and driving cylinder 71. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0029] Example 1.

[0030] like Figures 1 to 7 As shown, the plug removing and plugging device described in this embodiment includes:

[0031] The plug removal arm 10 is configured to be liftable and rotatable, and the free end of the plug removal arm 10 is provided with a positioning hole 11 that cooperates with the pre-filled needle rubber plug;

[0032] The stopper arm 20 is configured to be liftable and rotatable, and a suction nozzle 30 is provided at the free end of the stopper arm 20. The suction nozzle 30 is configured to be able to fit the pre-filled needle port to form a seal, and an air hole 31 for vacuuming is provided on the suction nozzle 30;

[0033] The plug guide cylinder 40 is arranged inside the suction nozzle 30 and is used to guide the prefilled needle plug into the prefilled needle;

[0034] The plug rod 50 is configured to move up and down along the axial direction of the guide plug cylinder 40;

[0035] When the plug removing arm 10 and the plug adding arm 20 move to the plug adding position, the central axes of the positioning hole 11, the plug guide tube 40 and the plug insertion rod 50 remain concentrically aligned.

[0036] For specific implementation, see Figure 1 and Figure 2As shown, the plug removing arm 10 and the plug adding arm 20 are mounted on a bracket which can be raised and lowered in the vertical direction, and are driven by a motor to rotate, wherein a positioning hole 11 is provided at the free end of the plug removing arm 10, and the shape and size of the positioning hole 11 match those of the prefilled needle plug to clamp and position the plug, while a suction nozzle 30 is provided at the free end of the plug adding arm 20, and the shape of the suction nozzle 30 matches that of the opening of the prefilled needle to form a seal during docking, and negative pressure can also be formed in the prefilled needle by evacuating air.

[0037] During operation, illustratively: when the plug removal arm 10 moves to the plug loading station, the plug can be sent to the positioning hole 11 by means of a mechanical push rod, and then the plug removal arm 10 rotates to the plugging position with the pre-filled needle plug. At this time, the plugging arm 20 also rotates to the plugging position and descends to make the suction nozzle 30 fit the opening of the pre-filled needle. At this time, the air inside the suction nozzle 30 and the pre-filled needle is extracted through the air hole 31 to form a negative pressure environment, so that the suction nozzle 30 is firmly adsorbed at the opening of the pre-filled needle, and then the plug rod 50 (for example, driven by a cylinder) moves downward to push the plug in the positioning hole 11 into the plug guide tube 40. In this process, the guide The connection between the plug barrel 40 and the outside space is blocked by the pre-filling needle rubber plug. Since the plug barrel 40 forms a closed chamber with the inside of the pre-filling needle through the suction nozzle 30, the air hole 31 is continuously evacuated at this time, and the vacuum value in the closed chamber continues to rise (or reaches a predetermined vacuum value) until the rubber plug is pushed into the plug barrel 40 by the plug rod 50, that is, the pre-filling needle rubber plug escapes from the plug barrel 40 and enters the pre-filling needle. Then, the connection between the plug barrel 40 and the outside space is restored due to the loss of the obstruction of the pre-filling needle rubber plug. At this time, the closed chamber cannot be formed, and the vacuum is broken, so that the rubber plug automatically enters the pre-filling needle under the action of atmospheric pressure, completing the plugging operation. Finally, the air hole 31 stops evacuating, the plug rod 50 resets upward, and the plugging arm 20 and the plug removal arm 10 rotate and reset respectively, ready for the next plugging operation.

[0038] In this way, this vacuum stoppering method mainly relies on the pressure difference to drive the rubber stopper into the prefilled needle. Compared with the method of direct push by the ejector rod, it avoids the deviation or bounce of the rubber stopper caused by the thrust of the ejector rod during the insertion process, improves the accuracy and stability of stoppering, and thus reduces the failure rate of stoppering.

[0039] In another embodiment, the stopper removal and plugging device can also be used for automatic plugging of vials. Specifically, the plugging arm 20 can move to the plug loading station, and use the negative pressure generated by the suction nozzle 30 to directly suck the vial plug (the top area of ​​the vial plug is larger than the top area of ​​the pre-filling needle to be directly sucked), and then the stopper arm 20 rotates to the plugging position and descends, so that the plug on the suction nozzle 30 is aligned with the vial opening, and the plug is inserted into the vial by pressing down. In this way, when using the device to produce different types of medicine bottles, there is no need to replace the stoppering device, which can improve production efficiency and reduce equipment investment and maintenance costs.

[0040] In some embodiments, Figure 6 As shown, at least a portion of the area between the hole wall of the suction nozzle 30 and the outer surface of the plug guide tube 40 is separated by a cavity 32 that is connected to the pre-filling needle, and the cavity 32 is connected to the air hole 31. In specific implementation, the cavity 32 can be designed as an annular groove on the hole wall of the suction nozzle 30, and connected to the external vacuum system through the air hole 31. This design can ensure that when the suction nozzle 30 forms a seal with the pre-filling needle, a vacuum can be stably drawn, thereby ensuring the stability and reliability of the plugging process.

[0041] In some embodiments, Figure 6 As shown, in order to ensure the sealing between the suction nozzle 30 and the guide plug cylinder 40, at least one annular sealing groove 33 is provided on the hole wall of the suction nozzle 30, and a sealing ring 34 is provided in the annular sealing groove 33, and the sealing ring 34 is in sealing contact with the outer surface of the guide plug cylinder 40. In this embodiment, the sealing ring 34 is usually made of elastic material, such as rubber, silicone, etc., and has good elasticity and resilience. When the guide plug cylinder 40 is matched with the suction nozzle 30, the sealing ring 34 will be compressed to form a close sealing contact, which effectively prevents air or liquid from leaking from the gap at the connection.

[0042] In some embodiments, the guide plug barrel 40 is detachably sealed and matched with the suction nozzle 30. In this way, in actual production, by replacing the guide plug barrel 40 with different inner diameters, prefilled needle rubber plugs with different diameters can be adapted to meet different plugging requirements.

[0043] In another embodiment, Figure 7 As shown, in order to guide the rubber plug to accurately enter the predetermined position in the prefilled needle, the bottom end of the guide plug cylinder 40 has an extension portion 41 extending beyond the suction nozzle 30, and the extension portion 41 is integrally formed with the guide plug cylinder 40 or detachably connected to the guide plug cylinder 40.

[0044] Specifically, the length of the extension 41 can be designed according to the depth to which the pre-filled needle plug needs to be inserted, and its outer diameter is slightly smaller than the inner diameter of the pre-filled needle so that it can be smoothly inserted into the pre-filled needle. During operation, illustratively: the plug removal arm 10 carries the plug and rotates to the plugging position. At the same time, the plugging arm 20 also rotates to the plugging position, and adjusts its descending position according to the predetermined depth to be inserted for plug assembly, so that the extension 41 extends into the pre-filled needle. Subsequently, the plug rod 50 moves downward, pushes the plug in the positioning hole 11 into the plug guide tube 40, and guides the plug into the predetermined position inside the pre-filled needle through the extension 41 to complete the plugging operation. This embodiment is suitable for plugging requirements that require the plug to be assembled to a predetermined position in the pre-filled needle, such as when the plug needs to be inserted into the middle of the pre-filled needle toward the bottom.

[0045] In some embodiments, Figure 2 and Figure 5 As shown, in order to transport the rubber plug from the rubber plug pot 60 to the positioning hole 11, it also includes a rubber plug pot 60, and a plug ejector rod 70 is provided at the discharge end of the rubber plug pot 60. When the plug removal arm 10 moves to the plug removal position, the plug ejector rod 70 is configured to push the pre-filled needle rubber plug into the positioning hole 11, and the positioning hole 11 is interference fit with the pre-filled needle rubber plug.

[0046] Specifically, the plug pot 60 is used to store pre-filled needle plugs, and a guide groove or pipe is provided at the discharge end thereof to guide the movement of the plugs, while the plug pusher rod 70 can be driven by a cylinder or a motor, and the shape of its front end matches the bottom of the plug, so that the plug can be pushed into the positioning hole 11. The diameter of the positioning hole 11 is slightly smaller than the diameter of the pre-filled needle plug, forming an interference fit, which can clamp the plug to prevent it from falling.

[0047] In this embodiment, the discharging end of the plug pot 60 is provided with a plug guide hole 61, which is used to receive the pre-filled needle plug and is coaxially arranged with the plug push rod 70. One end of the plug push rod 70 is inserted into the plug guide hole 61, and the other end is connected to the output end of the driving cylinder 71. In this way, the plug guide hole 61 can play a role in guiding the plug, and the movement direction of the plug push rod 70 is always consistent with the conveying direction of the plug, which can prevent the plug push rod 70 from deflecting or tilting in the process of pushing the plug, thereby improving the stability and reliability of the plug conveying.

[0048] In some embodiments, Figure 1 and Figure 2 As shown, the free end of the plug removal arm 10 is provided with a clearance gap 12 connected to the positioning hole 11 , the opening of the clearance gap 12 faces the area where the plugging position is located, and the opening width of the clearance gap 12 is greater than the diameter of the plug rod 50 .

[0049] Specifically, when the plug removal arm 10 moves to the plugging position, the plug rod 50 will push the prefilled needle plug out of the positioning hole 11. At this time, if the plug removal arm 10 does not have a clearance notch 12, the plug rod 50 may interfere with the plug removal arm 10, resulting in the plug removal arm 10 having to wait for the plug rod 50 to be reset before moving to the plug removal position, resulting in low plugging efficiency. The design of the clearance notch 12 allows the plug removal arm 10 to start the next plugging action immediately after the plug rod 50 completes the plugging action, without waiting for the plug rod 50 to be fully reset, thereby shortening the plugging process and saving time.

[0050] In some embodiments, Figure 6As shown, in order to simplify the gas path, the plugging arm 20 is provided with an air channel 21 connected to the air hole 31, and the air channel 21 is used to communicate with an external vacuum device. The air channel 21 is built into the plugging arm 20, which can reduce the number and length of external air pipes, simplify the gas path, and reduce the complexity and cost of gas path connection.

[0051] The stopper removal and stoppering device provided in this embodiment can be suitable for stoppering work of different medicine bottles through structural design. At the same time, vacuum-assisted stoppering not only improves the stoppering efficiency and accuracy, reduces the stoppering failure rate, solves problems such as stopper deviation and bouncing, but also enhances the sealing of the stopper. It can quickly and accurately complete the stopper removal and stoppering operations, significantly improves the stoppering efficiency, and meets the needs of large-scale production.

[0052] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0053] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A plugging and plugging device, characterized in that: include: A plug removal arm, which is configured to be liftable and rotatable, and a positioning hole is provided at the free end of the plug removal arm to cooperate with the prefilled needle rubber plug; A stopper arm, which is configured to be liftable and rotatable, a suction nozzle is provided at the free end of the stopper arm, the suction nozzle is configured to be able to fit the pre-filled needle port to form a seal, and an air hole for vacuuming is provided on the suction nozzle; A plug guide cylinder is arranged inside the suction nozzle and is used to guide the prefilled needle plug into the prefilled needle; A plug rod, configured to perform lifting and lowering motion along the axial direction of the guide plug cylinder; Wherein, when the plug removing arm and the plug adding arm move to the plug adding position, the central axes of the positioning hole, the plug guide cylinder and the plug insertion rod remain concentrically aligned.

2. The plugging and plugging device according to claim 1, characterized in that: A cavity communicated with the prefilling needle is separated from at least a portion of the area between the hole wall of the suction nozzle and the outer surface of the guide plug cylinder, and the cavity is communicated with the air hole.

3. The plugging and plugging device according to claim 2, characterized in that: At least one annular sealing groove is arranged on the hole wall of the suction nozzle, a sealing ring is arranged in the annular sealing groove, and the sealing ring is in sealing contact with the outer surface of the guide plug cylinder.

4. The plugging and plugging device according to claim 2 or 3, characterized in that: The guide plug cylinder is detachably sealed and matched with the suction nozzle.

5. The plugging and plugging device according to claim 1, characterized in that: The bottom end of the guide plug cylinder has an extension portion extending out of the suction nozzle, and the extension portion is integrally formed with the guide plug cylinder or detachably matched with the guide plug cylinder.

6. The plugging and plugging device according to claim 1, characterized in that: It also includes a plug pot, a plug rod is provided at the discharge end of the plug pot, when the plug removal arm moves to the plug removal position, the plug rod is configured to push the pre-filled needle plug into the positioning hole, and the positioning hole and the pre-filled needle plug are interference fit.

7. The plugging and plugging device according to claim 6, characterized in that: A plug guide hole is provided at the discharge end of the plug pot, the plug guide hole is used to receive the pre-filled needle plug and is coaxially arranged with the plug ejector rod, one end of the plug ejector rod is inserted into the plug guide hole, and the other end is connected to the output end of the driving cylinder.

8. The plug removing and plugging device according to claim 6, characterized in that: The free end of the plug removal arm is provided with a clearance gap connected to the positioning hole, the opening of the clearance gap faces the area where the plugging position is located, and the opening width of the clearance gap is greater than the diameter of the plug rod.

9. The plug removing and plugging device according to claim 1, characterized in that: An air passage communicating with the air hole is arranged in the plugging arm, and the air passage is used to communicate with an external vacuum pumping device.

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