A pre-charged needle-in-nest device and method

Abstract

The application discloses a pre-filled needle nesting device and method, and relates to the technical field of pharmaceutical equipment. The device comprises a conveying auger, a first fence is arranged above the conveying auger, a second fence is arranged on one side of the first fence, a pre-filled needle conveying channel is formed between the first fence and the second fence, a pre-filled needle transfer mechanism is arranged on one side of the pre-filled needle conveying channel, a nest box conveying channel is arranged on the other side of the pre-filled needle conveying channel, a nest box positioning mechanism is arranged on the nest box conveying channel, and a pre-filled needle jacking positioning mechanism is arranged at the bottom of the pre-filled needle conveying channel. The pre-filled needle jacking positioning mechanism comprises a positioning groove for accommodating the end of the pre-filled needle. The pre-filled needle nesting method is realized by controlling the start-stop and operation of the first conveying auger, the second conveying auger, the pre-filled needle transfer mechanism, the nest box positioning mechanism and the pre-filled needle jacking positioning mechanism. The pre-filled needle nesting device and method have the advantages of reasonable layout and high production efficiency.

Description

Technical Field

[0001] This invention belongs to the field of pharmaceutical equipment technology, and particularly relates to a pre-filled needle insertion device and method. Background Technology

[0002] In a pre-filled needle insertion device, objects such as syringes, vials, and other similar containers need to be inserted in an orderly manner into a container with a shell for receiving the objects.

[0003] Chinese patent application CN202280053482.X discloses a centering device, including a filling unit of the centering device and a filling method using the centering device. The centering device includes a plate body, which is defined in the circumferential direction by a first edge and a second edge that are oriented toward the outside of the plate body and opposite to each other in a reference direction. The first edge defines a plurality of first notches, and the second edge defines a plurality of second notches. Each of the first and second notches is used to receive a corresponding one of the objects. The plate is positioned above the pre-filling needle, which may interfere with the laminar flow environment, posing a risk of contamination after laminar flow disturbance. The filling unit includes a drive device configured to move the container relative to and below the centering device within the operating area. The movement of the container within the operating area occurs in two directions in the reference direction X, allowing alignment of any series of container shells with the first or second notch and removal of the object from the notch in the manner previously described. The drive device includes a tray for supporting the container, which is motorized along a guide rail to translate according to the reference direction X. The container to be filled is picked up from the storage area and brought into the operating area by a loading device, which also moves the filled container from the operating area to the storage area. The layout of the filling unit is not compact enough, the overall structure is bulky, the cost is relatively high, and the nesting board must be filled before it is placed into the nest box, resulting in poor continuity of operation.

[0004] Chinese patent application CN202221209361.3 discloses an automatic nesting device for pre-filled needle tubes. The arrangement and conveying mechanism is used to receive the pre-filled needle tubes at the channel and transport the arranged pre-filled needle tubes to the carrier plate at the nesting station. The discharge mechanism 31 includes a first moving device and a rotating device. The rotating device moves along the X-axis of the frame 1 under the drive of the first moving device. The output end of the rotating device has a rotating shaft. The rotating shaft rotates under the drive of the rotating device. The arrangement frame is connected to the rotating shaft. The arrangement frame rotates under the drive of the rotating device so that the pre-filled needle tubes at the opening transition to the bayonet at the conveying carrier plate. The above-mentioned nesting device and the nesting method of individual pre-filled needle tubes entering the rotating device in sequence are inefficient and have a large risk of bottle jamming.

[0005] Chinese patent application CN202121930422.0 discloses a pre-filled syringe lifting device. When the pre-filled syringe lifting device is used in a homing machine, after the pre-filled syringe delivered by the auger is in place, the top plate lifts the pre-filled syringe, and the robot grips and fixes the pre-filled syringe and inserts it into the homing plate. In the above homing scheme, the top plate is at risk of damaging the end of the pre-filled syringe. In addition, the auger and the top plate are staggered, and the spatial layout is not compact enough. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a pre-filled needle insertion device with reasonable layout and simple and compact structure, as well as an efficient and accurate pre-filled needle insertion method.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] A pre-filled needle insertion device includes a conveying auger with a first grid above it and a second grid on one side of the first grid, forming a pre-filled needle conveying channel between the first and second grids. A pre-filled needle transfer mechanism is provided on one side of the pre-filled needle conveying channel, and a nest box conveying channel is provided on the other side of the pre-filled needle conveying channel. A nest box positioning mechanism is provided on the nest box conveying channel, and a pre-filled needle lifting and positioning mechanism is provided at the bottom of the pre-filled needle conveying channel. The pre-filled needle lifting and positioning mechanism includes a positioning groove for accommodating the end of the pre-filled needle, achieving precise positioning. The overall layout is reasonable, and the structure is simple and compact.

[0009] As a further improvement to the above technical solution:

[0010] The conveying auger includes a first conveying auger and a second conveying auger. The first conveying auger is connected to the pre-filled needle conveying chute and a first servo drive mechanism. The second conveying auger is connected to the second servo drive mechanism to achieve precise positioning and smooth conveying.

[0011] A pre-charge needle position sensor is provided on the side of the first conveying auger close to the second conveying auger. The pre-charge needle position sensor is set on the first conveying auger and at least one station away from the second conveying auger to ensure the pause time when the second conveying auger is feeding material and to ensure that there is no shortage of material on the second conveying auger.

[0012] The positioning groove is trumpet-shaped and is used to accommodate the side wall of the pre-charge needle end to achieve precise positioning while avoiding damage to the pre-charge needle.

[0013] The pre-filled needle conveyor slide rail is S-shaped, and a conveyor wheel is provided below the pre-filled needle conveyor slide rail. The structure is simple and compact, which avoids damage to the pre-filled needles and achieves fast material discharge while avoiding interference with the back end.

[0014] A material collection trough is provided on one side of the pre-filled needle conveying chute. The material collection trough is connected to a material collection box or a detachable sampling mold for sampling and waste removal by the front-end equipment.

[0015] A box-pushing mechanism is also provided on one side of the nest box conveying channel. The nest box positioning mechanism includes a positioning rod for engaging the nest board and a box-blocking assembly for blocking the nest box, thereby realizing the conveying and positioning of the nest box.

[0016] The nest box positioning mechanism is located on one side of the second conveying auger. The pre-filled needle lifting and positioning mechanism includes a lifting drive mechanism and a positioning component. The positioning component is provided with a positioning groove. The lifting drive mechanism is located on one side of the first conveying auger. The positioning component is located below the pre-filled needle conveying channel. The lifting drive mechanism and the positioning component are connected by a connecting rod, resulting in a compact structural layout.

[0017] The inlet end of the nest box conveying channel is connected to the pre-filling and sealing host through the box conveying channel. The box conveying channel is connected to the first lifting channel, the horizontal conveying channel and the second lifting channel. The maintenance channel is formed below the horizontal conveying channel. The layout is reasonable and the maintenance channel allows personnel to pass through and operate the pre-filling and sealing host at the front end. At the same time, the box conveying channel can buffer excess nest boxes.

[0018] A method for placing pre-filled needles into a nest includes a pre-filled needle placement device as described above. A nest box positioning mechanism positions the nest box, and a first conveying auger operates. During the operation of the first conveying auger, when a pre-filled needle positioning sensor detects the presence of a bottle, a second conveying auger operates according to an acceleration cam curve. After a set stroke, it switches to a running cam curve. If the pre-filled needle positioning sensor continues to detect a bottle, the second conveying auger operates according to the running cam curve. If the pre-filled needle positioning sensor detects no bottle, the second conveying auger operates according to a deceleration cam curve. The first and second conveying augers operate. After a set stroke, both stop. A pre-filled needle lifting and positioning mechanism lifts and positions the pre-filled needle. A pre-filled needle transfer mechanism transfers the pre-filled needle, and then the first and second conveying augers continue operating. When the pre-filled needle transfer mechanism's discharge amount is greater than or equal to a set value, the nest box positioning mechanism places the nest box, a pusher mechanism moves the next nest box, and the nest box positioning mechanism positions the next nest box.

[0019] Compared with the prior art, the advantages of the present invention are as follows:

[0020] This invention discloses a pre-filled needle insertion device. The flange at the upper end of the pre-filled needle bottle is suspended between a first and a second grid. A conveying auger continuously transports the pre-filled needle within the pre-filled needle conveying channel. A pre-filled needle lifting and positioning mechanism then positions and lifts the pre-filled needle, and a nest box positioning mechanism positions the nest box and the nest board within it. Finally, a pre-filled needle transfer mechanism transfers the pre-filled needle into the nest board, completing the insertion of the pre-filled needle into the nest. The device features a pre-filled needle lifting and positioning mechanism at the bottom of the pre-filled needle conveying channel, a nest box positioning mechanism on the nest box conveying channel, and nest box conveying channels and pre-filled needle transfer mechanisms on both sides of the pre-filled needle conveying channel. This overall layout is reasonable and the structure is more compact. The conveying auger provides coarse positioning of the pre-filled needle, while the positioning groove provides precise positioning, facilitating gripping by the pre-filled needle transfer mechanism and enabling rapid transfer of the pre-filled needle. During the lifting process, the end of the pre-filled needle is accommodated in the positioning groove, which engages the side wall of the end of the pre-filled needle, preventing damage to the needle tip and cap during lifting. The conveying auger continuously conveys the pre-filled needles, and the pre-filled needle transfer mechanism directly places the pre-filled needles into the nest board inside the nest box. This method is efficient, continuous, and can match the speed of the front-end equipment.

[0021] This invention discloses a method for pre-filling needles into the nest. A second conveying auger accelerates and decelerates based on the presence or absence of bottles, preventing damage to the pre-filling needles. The first and second conveying augers operate synchronously after entering the operating cam curve, simplifying program control and reducing debugging difficulty. The second conveying auger operates based on the presence or absence of bottles, ensuring no missing bottles are ejected. The nest box positioning mechanism and pushing mechanism operate according to the material dispensing amount from the pre-filling needle transfer mechanism, achieving efficient and precise nest entry, ensuring the nest box is positioned upon entry and removed once full. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a pre-filled needle insertion device according to the present invention;

[0023] Figure 2 This is a cross-sectional view of a pre-filled needle insertion device according to the present invention;

[0024] Figure 3 for Figure 2 A magnified view of a portion of the image;

[0025] Figure 4 This is a schematic diagram of the connection between a pre-filled needle insertion device and a pre-filling and sealing main unit according to the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the nest box conveying channel of a pre-filled needle insertion device according to the present invention;

[0027] Figure 6 This is a schematic diagram of the baffle assembly of a pre-filled needle insertion device according to the present invention;

[0028] Figure 7 This is a control logic diagram of a pre-filled needle insertion method according to the present invention.

[0029] The reference numerals in the accompanying drawings of this invention are explained as follows: 1. Conveying auger; 2. First fence; 3. Pre-filled needle conveying channel; 4. Pre-filled needle transfer mechanism; 5. Nest box conveying channel; 6. Nest box positioning mechanism; 7. Pre-filled needle lifting and positioning mechanism; 8. Positioning groove; 9. First conveying auger; 10. Second conveying auger; 11. First servo drive mechanism; 12. Second servo drive mechanism; 13. Pre-filled needle conveying chute; 14. Conveying wheel; 15. Collection trough; 16. Collection box; 17. Sampling mold; 18. Box pushing mechanism; 19. Positioning rod; 20. Box blocking assembly; 21. Lifting drive mechanism; 22. Positioning component; 23. Connecting rod; 24. Box conveying channel; 25. Pre-filling and sealing main unit; 26. First lifting channel; 27. Lateral conveying channel; 28. Second lifting channel; 29. ​​Inspection channel; 30. Second fence; 31. Pre-filled needle positioning sensor. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Example 1

[0032] like Figures 1 to 6 As shown, a pre-filled needle insertion device includes a conveying auger 1, a first grid 2 above the conveying auger 1, a second grid 30 on one side of the first grid 2, a pre-filled needle conveying channel 3 between the first grid 2 and the second grid 30, a pre-filled needle transfer mechanism 4 on one side of the pre-filled needle conveying channel 3, a nest box conveying channel 5 on the other side of the pre-filled needle conveying channel 3, a nest box positioning mechanism 6 on the nest box conveying channel 5, and a pre-filled needle lifting and positioning mechanism 7 at the bottom of the pre-filled needle conveying channel 3. The pre-filled needle lifting and positioning mechanism 7 includes a positioning groove 8 for accommodating the end of the pre-filled needle, and the positioning groove 8 is trumpet-shaped.

[0033] The second fence 30 is wider than the first fence 2. The conveying auger 1 is installed below the first fence 2. The first fence 2 is narrower, which facilitates the installation and debugging of the conveying auger 1. The second fence 30 is wider, which facilitates the support of the overall bracket and the installation of other structures.

[0034] The flange at the upper end of the pre-filled needle bottle is suspended between the first fence 2 and the second fence 30. The conveying auger 1 continuously conveys the pre-filled needle in the pre-filled needle conveying channel 3. Then, the pre-filled needle lifting and positioning mechanism 7 positions and lifts the pre-filled needle, the nest box positioning mechanism 6 positions the nest box and the nest board inside the nest box, and the pre-filled needle is transferred to the nest board by the pre-filled needle transfer mechanism 4, thus completing the entry of the pre-filled needle into the nest. The pre-filled needle lifting and positioning mechanism 7 is set at the bottom of the pre-filled needle conveying channel 3, located at the bottom of the conveying auger 1, making reasonable use of the space below and avoiding widening the platform in the length and width directions. A nest box positioning mechanism 6 is set on the nest box conveying channel 5, making reasonable use of the space on the nest box conveying channel 5, eliminating the need for a separate nest board positioning area. A nest box conveying channel 5 and a pre-filled needle transfer mechanism 4 are respectively set on both sides of the pre-filled needle conveying channel 3. The pre-filled needle transfer mechanism 4 is a four-axis robot with a clamp, which can clamp a row, usually ten pre-filled needles, at a time and place them into the nest board. It is arranged along the length of the pre-filled needle conveying channel 3 to avoid interference with the nest box conveying channel. The overall layout is reasonable and the structure is more compact. The groove of the conveying auger achieves coarse positioning of the pre-filled needles, and the positioning groove 8 achieves precise positioning of the pre-filled needles, which facilitates the gripping of the pre-filled needle transfer mechanism 4 and completes the rapid transfer of pre-filled needles. During the lifting process, the end of the pre-filled needle is accommodated in the positioning groove 8. The positioning groove 8 locks the side wall of the pre-filled needle end for precise positioning. The trumpet-shaped positioning groove 8 guides the pre-filled needle as it enters, preventing damage to the needle tip and cap during lifting. The conveying auger 1 continuously conveys the pre-filled needle, and the pre-filled needle transfer mechanism 4 directly places the pre-filled needle into the nest board inside the nest box. This method offers high efficiency and continuity in nest placement and can match the speed of the front-end equipment.

[0035] The conveying auger 1 includes a first conveying auger 9 and a second conveying auger 10. The first conveying auger 9 is connected to a first servo drive mechanism 11, and the second conveying auger 10 is connected to a second servo drive mechanism 12. The first conveying auger 9 is connected to a pre-filled needle conveying chute 13. A pre-filled needle position sensor 31 is provided on the side of the first conveying auger 9 closest to the second conveying auger 10. The pre-filled needle position sensor 31 is located on the first conveying auger 9 and at least one station away from the second conveying auger 10. Precise control of the first and second conveying augers 9 and 10 ensures no missing bottles are discharged. The start and stop of the second conveying auger 10 are controlled by the pre-filled needle position sensor 31. At least one station is reserved between the pre-filled needle detection by the pre-filled needle position sensor 31 and the pre-filled needle being conveyed to the second conveying auger 10, allowing sufficient time for the second conveying auger 10 to start operation and avoid damage to the pre-filled needle.

[0036] The pre-charge needle conveying slide rail is S-shaped, and a conveying wheel 14 is provided below the pre-charge needle conveying slide rail. The S-shaped pre-charge needle conveying slide rail can buffer the pre-charge needles when the first conveying auger 9 is not started, and the slide rail is smoother. The pre-charge needles slide down slowly using the component of gravity, avoiding overshoot and damage. Since the S-shaped slide rail loses the component of gravity at the bend, the pre-charge needles are pushed down by the conveying wheel 14. It can also cooperate with the subsequent first conveying auger 10 to discharge material. The pre-charge needles are pushed from below by the conveying wheel 14 to avoid disturbing the laminar flow and reduce the risk of contamination.

[0037] A material collection trough 15 is provided on one side of the pre-filled needle conveying chute 13. The material collection trough 15 is connected to the material collection box 16 or the sampling mold 17 that can be detached, so as to collect the waste generated by the front-end equipment and sample the samples generated by the front-end equipment.

[0038] The pre-filled needle conveying chute 13 and the collection trough 15 are respectively connected to the discharge channel and the sampling and rejection channel of the full-weight pre-filling equipment (the whole equipment is not shown in the figure). The discharge channel and the sampling and rejection channel are respectively set on different dials. The pre-filled needle conveying chute 13 is an S-shaped slide rail, which allows the discharge channel to connect with the first conveying auger 9 and avoid the drive mechanism of the first conveying auger 9 to avoid interference. This reduces the width requirement of the pre-filled needle entering device and makes the overall structure more compact.

[0039] A pusher mechanism 18 is also provided on one side of the nest box conveying channel 5. The nest box positioning mechanism 6 includes a positioning rod 19 for engaging the nest board and a baffle assembly 20 for blocking the nest box, thereby realizing the conveying and positioning of the nest box.

[0040] The pusher mechanism 18 is located on one side of the conveyor wheel 14. The pusher mechanism 18 includes a pusher drive mechanism and a push rod. The pusher drive mechanism and the conveyor wheel 14's wheel drive mechanism are mounted on the same frame to ensure a compact structure. Once the nest box is filled with pre-filled needles, the conveyor belt (not shown in the figure) outputs the nest box. The pusher mechanism pushes the next nest box to the nest box positioning mechanism 6, where the stop assembly 20 blocks the nest box. The positioning rod 19 is inserted into the positioning holes on both sides of the nest plate to complete the positioning. The stop assembly 20 can be designed as follows: Figure 6 The lifting plate mechanism shown lifts the nest box, and another baffle mechanism on one side drives the baffle to block the nest box, thus completing the positioning. Alternatively, a similar mechanism can be used. Figure 1 As shown, around the nest box, a rotating drive mechanism drives a lever to rotate, blocking the nest box and completing its positioning.

[0041] The nest box positioning mechanism 6 is located on one side of the second conveying auger 10. The pre-filled needle lifting and positioning mechanism 7 includes a lifting drive mechanism 21 and a positioning component 22. The positioning component 22 is provided with a positioning groove 8. The lifting drive mechanism 21 is located on one side of the first conveying auger 9, and the positioning component 22 is located below the pre-filled needle conveying channel 3. The lifting drive mechanism 21 and the positioning component 22 are connected by a connecting rod 23. The nest box positioning mechanism 6 and the pre-filled needle lifting and positioning mechanism 7 are located on opposite sides of the second conveying auger 10, reducing the required travel distance of the pre-filled needle transfer mechanism 4. The lifting drive mechanism 21 is located on one side of the first conveying auger, utilizing the available space for installation, resulting in a compact structure.

[0042] The inlet end of the nest box conveying channel 5 is connected to the pre-filling and sealing host 25 via the box conveying channel 24. The box conveying channel 24 connects to the first lifting channel 26, the transverse conveying channel 27, and the second lifting channel 28. A maintenance channel 29 is formed below the transverse conveying channel 27. The layout is reasonable, and the maintenance channel 29 facilitates personnel passage to operate the pre-filling and sealing host 25 at the front end. The pre-filled needles to be filled are placed in the nest box. Before entering the pre-filling and sealing host 25, the pre-filled needles are placed in a single row into the pre-filling and sealing host 25 for weighing, filling, and capping by a nest removal machine or other device. Empty nest boxes are conveyed to the pre-filled needle insertion machine through the nest box conveying channel 5. Since the weighing, filling, and capping process will produce defective bottles or samples, the number of assembled pre-filled needles returning to the nest box will be less than the number taken out of the nest box. The longer nest box conveying channel 5 can buffer the excess nest boxes.

[0043] Example 2

[0044] A method for placing pre-filled needles into a nest includes a pre-filled needle placement device as described above. A nest box positioning mechanism 6 positions the nest box, and a first conveying auger 9 operates. During the operation of the first conveying auger 9, when a pre-filled needle position sensor 31 detects a bottle, a second conveying auger 10 operates according to an acceleration cam curve. After a set stroke, it switches to a running cam curve. If the pre-filled needle position sensor 31 continues to detect a bottle, the second conveying auger 10 operates according to the running cam curve. If the pre-filled needle position sensor 31 detects no bottle, the second conveying auger 10 operates according to a deceleration cam curve. The first and second conveying augers operate. After a set stroke, the first and second conveying augers stop operating. A pre-filled needle lifting and positioning mechanism 7 lifts and positions the pre-filled needle. After the pre-filled needle transfer mechanism 4 transfers the pre-filled needle, the first and second conveying augers continue operating. When the amount of material discharged by the pre-filled needle transfer mechanism 4 is greater than or equal to a set value, the nest box positioning mechanism 6 places the nest box, a pusher mechanism 18 pushes the next nest box to move, and the nest box positioning mechanism 6 positions the next nest box.

[0045] The second conveying auger 10 accelerates and decelerates to stop based on the presence or absence of bottles, preventing damage to the pre-filling needle. The first and second conveying augers 9 and 10 can run and stop synchronously after entering the running cam curve, simplifying program control and reducing debugging difficulty. The second conveying auger 10 operates based on the presence or absence of bottles, ensuring that no bottles are missing when it exits. The nest box positioning mechanism 6 and the pusher mechanism 18 operate according to the amount of material discharged by the pre-filling needle transfer mechanism 4, achieving efficient and accurate nest entry, ensuring that the nest box is positioned when entering the nest and is transported away after being filled.

[0046] like Figure 7 The following is a complete packing process: The pre-filling needle insertion process begins. The nest box positioning mechanism 6 positions the nest box. The first conveyor auger 9 operates according to the running cam curve. The pre-filling needle enters the first conveyor auger 9 through the pre-filling needle conveying chute 13. The pre-filling needle positioning sensor 31 detects the presence of a bottle. Since the pre-filling needle positioning sensor 31 is two stations away from the second conveyor auger 10, it shifts according to the detection signal. That is, after detecting a bottle, it counts two revolutions. The first conveyor auger 9 advances one pre-filling needle for each station it moves. One revolution of the motor is 360 degrees. Once a bottle is confirmed at the last station of the first conveyor auger 9, the first conveyor auger 9 runs to 320 degrees, and the second conveyor auger 10 engages the acceleration cam. The second conveyor auger 10 completes one revolution within the remaining 40 degrees of the first conveyor auger 9's rotation, thus preventing overshoot of the pre-charge needle entering the second conveyor auger 10 from the first conveyor auger 9. Once the first conveyor auger 9 reaches 0 degrees, the second conveyor auger engages the normal cam curve. The operating mode of the second conveyor auger 10 is controlled according to the presence or absence of a bottle signal. When a bottle is present, the normal cam curve continues to operate. When a no-bottle signal is received from the sensor after displacement, the second conveyor auger 10 engages the deceleration curve to prevent overshoot of the pre-charge needle within the second conveyor auger 10, which could cause damage. When there is no bottle, the second conveyor auger 10 stops operating via the deceleration curve to prevent pre-charge needle gaps on the second conveyor auger 10.

[0047] After the first conveyor auger 9 starts running, it is determined whether it is the first run. If it is the first run, there are no bottles on the first conveyor auger 9. If it is not the first run, the second conveyor auger 10 has two pre-filled needles at the two stations before the first conveyor auger 9. Therefore, if it is the first run, the second conveyor auger needs to feed 12 bottles, instead of 10 bottles. The number of 10 bottles is set because the pre-filled needle box is usually a cube, with 10 pre-filled needles per column and 10 columns per box. After counting 10 bottles, the first conveyor auger 9 is positioned and stopped at 0 degrees. The second conveyor auger 10 stops synchronously. The main shafts of the first and second conveyor augers 9 and 10 can be engaged together to achieve synchronous stopping. After the second conveyor auger 10 stops, the pre-filling needle lifting and positioning mechanism 7 positions the pre-filling needle. After positioning, it waits for the pre-filling needle transfer mechanism 4 to complete picking up the bottle. It is then determined whether the pre-filling needle transfer mechanism has placed the bottle 10 times to fill the box. If the box is full, the nest box positioning mechanism 6 places the box, completing one pre-filling needle placement and starting the positioning of the next nest box. If it has not been 10 times, the first conveyor auger 9 starts running again according to the running cam curve.

[0048] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them 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 scope of the present invention, should fall within the protection scope of the present invention.

Claims

1. A method for inserting a pre-filled needle into a nest, characterized in that, The method uses a pre-filled needle insertion device, which includes a conveying auger (1). A first grid (2) is provided above the conveying auger (1), and a second grid (30) is provided on one side of the first grid (2). A pre-filled needle conveying channel (3) is formed between the first grid (2) and the second grid (30). A pre-filled needle transfer mechanism (4) is provided on one side of the pre-filled needle conveying channel (3), and a nest box conveying channel (5) is provided on the other side of the pre-filled needle conveying channel (3). A nest box positioning mechanism (6) is provided on the nest box conveying channel (5), and a pre-filled needle lifting and positioning mechanism (7) is provided at the bottom of the pre-filled needle conveying channel (3). The pre-charge needle lifting and positioning mechanism (7) includes a positioning groove (8) for accommodating the end of the pre-charge needle. The nest box conveying channel (5) is also provided with a box pushing mechanism (18) on one side. The conveying auger (1) includes a first conveying auger and a second conveying auger. The first conveying auger is connected to the pre-charge needle conveying chute (13). The first conveying auger is connected to a first servo drive mechanism (11). The second conveying auger is connected to a second servo drive mechanism (12). The first conveying auger is provided with a pre-charge needle position sensor (31) on the side of the first conveying auger close to the second conveying auger. The pre-charge needle position sensor (31) is set on the first conveying auger and is at least one station away from the second conveying auger. The method includes: Nest box positioning mechanism (6) positions the nest box, and the first conveying auger runs; During the operation of the first conveying auger, when the pre-fill needle position sensor (31) detects a bottle, the second conveying auger runs according to the acceleration cam curve. After running the set stroke, it switches to the running cam curve. If the pre-fill needle position sensor (31) continues to detect a bottle, the second conveying auger runs according to the running cam curve. If the pre-fill needle position sensor (31) detects no bottle, the second conveying auger runs according to the deceleration cam curve. The first and second conveying augers are running. After the set stroke is completed, the first and second conveying augers stop running. The pre-filling needle lifting and positioning mechanism (7) lifts and positions the pre-filling needle. The pre-filling needle transfer mechanism (4) transfers the pre-filling needle. After that, the first and second conveying augers continue to run. When the pre-filled needle transfer mechanism (4) dispenses material at a rate greater than or equal to the set value, the nest box positioning mechanism dispenses the nest box, the push box mechanism (18) pushes the next nest box to move, and the nest box positioning mechanism (6) positions the next nest box.

2. The method for inserting a pre-filled needle into a nest as described in claim 1, characterized in that, The pre-charge needle conveying chute is S-shaped, and a conveying wheel (14) is provided below the pre-charge needle conveying chute.

3. The method for inserting a pre-filled needle into a nest as described in claim 1, characterized in that, The positioning groove (8) is trumpet-shaped.

4. The method for inserting a pre-filled needle into a nest as described in claim 1, characterized in that, The pre-filled needle conveying chute (13) has a material collection trough (15) on one side, which is connected to the material collection box (16) or a detachable sampling mold (17).

5. The method for inserting a pre-filled needle into a nest as described in claim 1, characterized in that, The nest box positioning mechanism (6) includes a positioning rod (19) for engaging the nest board and a baffle assembly (20) for blocking the nest box.

6. The method for inserting a pre-filled needle into a nest as described in claim 1, characterized in that, The nest box positioning mechanism (6) is located on one side of the second conveying auger. The pre-charge needle lifting positioning mechanism (7) includes a lifting drive mechanism (21) and a positioning component (22). The positioning component (22) is provided with a positioning groove (8). The lifting drive mechanism (21) is located on one side of the first conveying auger. The positioning component (22) is located below the pre-charge needle conveying channel (3). The lifting drive mechanism (21) and the positioning component (22) are connected by a connecting rod (23).

7. The method for inserting a pre-filled needle into a nest as described in claim 1, characterized in that, The inlet end of the nest box conveying channel (5) is connected to the pre-filling and sealing host (25) through the box conveying channel (24). The box conveying channel (24) is connected to the first lifting channel (26), the horizontal conveying channel (27), and the second lifting channel (28). A maintenance channel (29) is formed below the horizontal conveying channel (27).

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