Liquid medicine filling method

Abstract

The invention discloses a liquid medicine filling method which comprises a container conveying device, a first weighing station and a second weighing station arranged along the container conveying device, and a filling needle frame movably arranged above the container conveying device, and a plurality of filling needles are arranged on the filling needle frame in the container conveying direction. The first weighing station and the second weighing station are each provided with a plurality of weighing mechanisms arranged corresponding to filling needle intervals, and the container conveying device intermittently conveys at least one container to the specified weighing mechanism of the first weighing station to be weighed and then conveys the container to the specified weighing mechanism of the second weighing station to be weighed. And when the filling quantity is not qualified, the adjacent filling needles are used for supplementing liquid. According to the liquid medicine filling method, the automation program setting difficulty and cost are reduced, and the overall production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of food and medicine packaging machinery and equipment, and in particular to a medicine liquid filling method. Background Art

[0002] Existing liquid medicine filling devices generally include a bottle conveying mechanism and a front weighing station, a normal filling station and a rear weighing station arranged in sequence along the conveying direction of the bottle conveying mechanism. A filling needle rack is movably arranged above the normal filling station and the rear weighing station. A row of filling needles connected to a dispenser are arranged on the filling needle rack, which are used to empty the pipeline and fill it before normal filling (exhaust the air in the pipeline) and / or to fill the bottles entering the normal filling station with normal liquid medicine and / or to refill the bottles that have not met the filling standards at the rear weighing station and / or to fill the remaining liquid medicine in the dispenser with tail liquid. The method of using existing liquid medicine filling devices for liquid medicine filling is generally suitable for large-volume filling (for example, a filling needle pump can only fill one bottle at a time or multiple fillings are required to fill one bottle), and the bottle conveying mechanism conveys bottles in rows during the emptying and filling stage, the normal filling stage, and the tail liquid filling stage, that is, a row of bottles is conveyed to the corresponding station at a time. In this way, on the one hand, during the tail liquid filling stage at the post-weighing station, it is difficult to set the movement relationship between the filling needle rack and the row of bottles on the post-weighing station below, which increases the difficulty and cost of setting up the automated program; on the other hand, during the tail liquid filling stage at the post-weighing station, for small-volume filling (a filling needle pump can fill multiple bottles at a time), the waiting time of the bottle conveying mechanism at the post-weighing station will be increased, affecting the overall production efficiency. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a liquid medicine filling method which reduces the difficulty and cost of setting up an automated program and improves the overall production efficiency.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A method for filling a medicinal liquid comprises a container conveying device, a first weighing station and a second weighing station arranged along the container conveying device, and a filling needle rack movably arranged above the container conveying device, wherein a plurality of filling needles are arranged on the filling needle rack along the container conveying direction, and the first weighing station and the second weighing station are both provided with a plurality of weighing mechanisms arranged corresponding to the spacing between the filling needles. The container conveying device intermittently conveys at least one container to the designated weighing mechanism of the first weighing station for weighing, and then conveys the container to the designated weighing mechanism of the second weighing station for weighing, and the container is filled by the filling needles. When the filling amount is unqualified, the adjacent filling needles are used to replenish the liquid.

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

[0007] The container conveying device comprises an intermittent feeding mechanism and a container conveying mechanism. The first weighing station and the second weighing station are arranged along the container conveying mechanism. The intermittent feeding mechanism is connected to the container conveying mechanism to intermittently supply containers to the container conveying mechanism.

[0008] The container conveying mechanism conveys containers at intervals, and when the front container arrives at the designated weighing mechanism of the second weighing station, the corresponding rear container arrives at the designated weighing mechanism of the first weighing station.

[0009] The liquid medicine filling method includes a tail liquid filling stage. In the tail liquid filling stage, each container is placed on a weighing mechanism designated by the first weighing station. The container conveying device conveys one container to the weighing mechanism intermittently, and conveys one bottle at a time. Each filling needle moves to the weighing mechanism one by one to fill the container below. After the front filling needle is filled until the liquid medicine is emptied, the rear filling needle replenishes the liquid and / or fills until the liquid medicine is emptied.

[0010] In the tail liquid filling stage, the container conveying device conveys containers at intervals of at least n containers' total width.

[0011] The liquid medicine filling method also includes a normal filling stage, in which the container conveying device intermittently conveys n containers at a time.

[0012] The container conveying device is provided with a normal filling station between the first weighing station and the second weighing station. The normal filling stage is performed at the normal filling station. The filling needle rack drives each filling needle to move synchronously with the container conveying device for follow-up filling.

[0013] The number of weighing mechanisms on the first weighing station and the second weighing station is set to n.

[0014] The length of the normal filling station is greater than an integer multiple of the sum of the widths of the n containers.

[0015] The liquid medicine filling method also includes an emptying and filling stage, which is performed on each weighing mechanism of the first weighing station. The container conveying device conveys a row of containers to the first weighing station at a time, so that each weighing mechanism has a container, and the filling needles corresponding to each first weighing mechanism empty the air in the filling discharge pipe as a whole.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] This liquid medicine filling method uses a container conveying device to intermittently convey containers. The container is first conveyed to the designated weighing mechanism of the first weighing station for weighing, and then the container is conveyed to the designated weighing mechanism of the second weighing station for weighing. Compared with the prior art that conveys the bottles to the front and rear weighing stations in rows, this liquid medicine filling method, on the one hand, keeps the container conveying device to intermittently convey the container, and on the other hand, the containers are weighed successively on the designated weighing mechanism. When the container filling amount is unqualified and needs to be replenished, the needle filling stand only needs to establish a relative motion relationship with the designated weighing mechanism of the second weighing station to meet the requirement of replenishing the container with unqualified filling amount. That is, it is easy to set the motion relationship between the needle filling stand and the designated weighing mechanism below, which reduces the difficulty and cost of setting up the automation program. Furthermore, since containers with unqualified filling amounts are weighed and refilled with fluid on the designated weighing mechanism at the second weighing station, when refilling and filling are carried out at the second weighing station, for small-volume filling (a filling syringe pump can fill multiple bottles at one time), the time it takes for the filling syringe rack to move back and forth on the second weighing station to find the unqualified containers is reduced, thereby reducing the waiting time of the container conveying device at the second weighing station due to refilling, thereby improving the overall production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a process schematic diagram of the tail liquid filling stage of the medicine liquid filling method of the present invention.

[0019] Figure 2 It is a process schematic diagram of the normal filling stage of the liquid medicine filling method of the present invention.

[0020] Figure 3 It is a process schematic diagram of the emptying and filling stage of the liquid medicine filling method of the present invention.

[0021] Figure 4 It is a structural schematic diagram of a container conveying device of the liquid medicine filling method of the present invention.

[0022] The symbols in the figure represent:

[0023] 1. Container conveying device; 11. Intermittent feeding mechanism; 12. Container conveying mechanism; 2. First weighing station; 3. Filling needle rack; 4. Filling needle; 5. Weighing mechanism; 6. Container; 7. Second weighing station; 8. Normal filling station. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are 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, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "assemble", "connect", "connect", "fix" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Embodiment 1:

[0029] Figures 1 to 4 The first embodiment of the liquid medicine filling method of the present invention is shown. The liquid medicine filling method of this embodiment comprises a container conveying device 1, a first weighing station 2 and a second weighing station 7 arranged along the container conveying device 1, and a needle filling rack 3 movably arranged above the container conveying device 1. A plurality of needles 4 are arranged on the needle filling rack 3 along the container conveying direction. The first weighing station 2 and the second weighing station 7 are both provided with a plurality of weighing mechanisms 5 arranged corresponding to the spacing of the needles 4. The container conveying device 1 intermittently conveys at least one container 6 to the weighing mechanism 5 designated by the first weighing station 2 for weighing, and then conveys the container 6 to the weighing mechanism 5 designated by the second weighing station 7 for weighing, and the container 6 is filled by the needle 4. When the filling amount is unqualified, the adjacent needle 4 is used to replenish the liquid. That is, the container 6 is weighed and replenished on the weighing mechanism 5 designated by the second weighing station 7.

[0030] The present liquid medicine filling method uses the container conveying device 1 to intermittently convey the container 6, first conveys the container 6 to the designated weighing mechanism 5 of the first weighing station 2 for weighing, and then conveys the container 6 to the designated weighing mechanism 5 of the second weighing station 7 for weighing. Compared with the prior art that conveys the bottles to the front and rear weighing stations in rows, the present liquid medicine filling method, on the one hand, keeps the container conveying device 1 to intermittently convey the container 6, and on the other hand, the container 6 is weighed successively on the designated weighing mechanism 5. When the container 6 does not meet the requirements and needs to be refilled, the needle filling rack 4 only needs to establish a relative motion relationship with the designated weighing mechanism 5 of the second weighing station 7 to meet the requirements of refilling the container 6 with the unqualified amount. That is, it is easy to set the motion relationship between the needle filling rack 4 and the designated weighing mechanism 5 below, which reduces the difficulty and cost of setting the automation program. Furthermore, since the containers 6 with unqualified filling amounts are weighed and refilled with fluid on the designated weighing mechanism 5 of the second weighing station 7, when refilling and filling are performed at the second weighing station 7, for small-volume filling (a filling pump can fill multiple bottles at one time), the time for the filling needle rack 4 to move back and forth on the second weighing station 7 to find the unqualified containers 6 is reduced, thereby reducing the waiting time of the container conveying device 1 on the second weighing station 7 due to refilling, thereby improving the overall production efficiency.

[0031] Furthermore, if Figure 4 As shown, in this embodiment, the container conveying device 1 includes an intermittent feeding mechanism 11 and a container conveying mechanism 12, the first weighing station 2 and the second weighing station 7 are arranged along the container conveying mechanism 12, and the intermittent feeding mechanism 11 is docked with the container conveying mechanism 12, and is used to intermittently supply containers 6 to the container conveying mechanism 12. The intermittent feeding mechanism 11 is docked with the container conveying mechanism 12, and is used to intermittently supply containers 6 to the container conveying mechanism 12, so that the containers 6 on the container conveying mechanism 12 can be spaced front and back to meet the requirement that during the intermittent conveying process of the container conveying mechanism 12, the container 6 is first weighed on the designated weighing mechanism 5 of the first weighing station 2, and then weighed on the designated weighing mechanism 5 of the second weighing station 7.

[0032] Furthermore, in this embodiment, the container conveying mechanism 12 conveys the containers 6 at intervals, and when the front container 6 arrives at the designated weighing mechanism 5 of the second weighing station 7, the corresponding container 6 behind arrives at the designated weighing mechanism 5 of the first weighing station 2. This allows the designated weighing mechanism 5 of the first weighing station 2 and the designated weighing mechanism 5 of the second weighing station 7 to work simultaneously, further improving the overall production efficiency.

[0033] The requirements for intermittent conveying of the container conveying device 1 are: conveying a container 6 to a designated weighing mechanism 5 of the first weighing station 2 for weighing, and then conveying the container 6 to a designated weighing mechanism 5 of the second weighing station 7 for weighing, and the filling needle 4 fills the container 6 on the designated weighing mechanism 5 of the second weighing station 7, and when the filling amount of the container 6 is unqualified, the adjacent filling needle 4 replenishes the liquid; or, conveying two containers 6 to the designated two weighing mechanisms 5 of the first weighing station 2 for weighing, and then conveying the two containers 6 to the designated two weighing mechanisms 5 of the second weighing station 7 for weighing, and the filling needle 4 fills the containers 6 on the designated two weighing mechanisms 5 of the second weighing station 7 for weighing, and when the filling amount of the container 6 is unqualified, the adjacent filling needle 4 replenishes the liquid: or, conveying Three containers 6 are weighed on the three designated weighing mechanisms 5 of the first weighing station 2, and then the three containers 6 are transported to the three designated weighing mechanisms 5 of the second weighing station 7 for weighing, and the filling needle 4 fills the containers 6 on the three designated weighing mechanisms 5 of the second weighing station 7. When the filling amount of the container 6 is unqualified, the adjacent filling needle 4 performs fluid replenishment. Alternatively, M+3 containers 6 are transported to the M+3 designated weighing mechanisms 5 of the first weighing station 2 for weighing, and then the M+3 containers 6 are transported to the M+3 designated weighing mechanisms 5 of the second weighing station 7 for weighing, and the filling needle 4 fills the containers 6 on the M+3 designated weighing mechanisms 5 of the second weighing station 7 for weighing. When the filling amount of the container 6 is unqualified, the adjacent filling needle 4 performs fluid replenishment, and M is a positive integer greater than or equal to 1.

[0034] The intermittent feeding mechanism 11 intermittently supplies containers 6 to the container conveying mechanism 12, such as the interval setting time is the container conveying mechanism 12 supplies containers 6; the container conveying mechanism 12 conveys a set distance and stops for a set time or runs continuously, cooperating with the intermittent feeding action of the intermittent feeding mechanism 11, so that the container conveying mechanism 12 conveys M containers 6 to the designated M weighing mechanisms 5 of the first weighing station 2 for weighing, and then conveys the M containers 6 to the designated M weighing mechanisms 5 of the second weighing station 7 for weighing, and the filling needle 4 fills the containers 6 on the designated M weighing mechanisms 5 of the second weighing station 7. When the filling amount of the container 6 is unqualified, the adjacent filling needle 4 will replenish the liquid, and M is a positive integer greater than or equal to 1.

[0035] Furthermore, if Figure 4As shown, in this embodiment, the intermittent feeding mechanism 11 includes a bottle feeding mechanism, a bottle feeding dial wheel and a bottle blocking valve. The bottle feeding mechanism is connected to the container conveying mechanism 12 through the bottle feeding dial wheel. The bottle blocking valve is arranged between the bottle feeding mechanism and the bottle feeding dial wheel. The position of the bottle blocking valve to the first weighing station 2 and the second weighing station 7 is fixed. The feeding requirements of the intermittent conveying of the container conveying mechanism 12 can be met by controlling the blocking and releasing operation of the bottle blocking valve. The action of the bottle blocking valve can control the bottle feeding at the specified position according to the current bottle number of the bottle feeding dial wheel. If the bottle feeding mechanism and the bottle feeding dial wheel operate continuously, the bottle blocking valve places M containers 6 at set intervals, so that the accommodating grooves on the side of the bottle feeding dial wheel can place M containers 6 continuously and no containers 6 are placed at intervals, and cooperate with the conveying action of the container conveying mechanism 12 to make the container conveying mechanism 12 convey M containers 6 to the designated M weighing mechanisms 5 of the first weighing station 2 for weighing, and then convey the M containers 6 to the designated M weighing mechanisms 5 of the second weighing station 7 for weighing, and the filling needles 4 fill the containers 6 on the designated M weighing mechanisms 5 of the second weighing station 7, and when the filling amount of the container 6 is unqualified, the adjacent filling needles 4 will replenish the liquid, and M is a positive integer greater than or equal to 1.

[0036] Embodiment 2:

[0037] Figure 1 A second embodiment of the method for filling liquid medicine of the present invention is shown. The method for filling liquid medicine of this embodiment is basically the same as that of the first embodiment, and the difference lies in that the method for filling liquid medicine includes a tail liquid filling stage. In the tail liquid filling stage, each container 6 is placed on a weighing mechanism 5 designated by the first weighing station 2, and the container conveying device 1 conveys one container 6 to the weighing mechanism 5 intermittently, and conveys one bottle at a time. Each filling needle 4 moves one by one to the weighing mechanism 5 to fill the container 6 below. After the front filling needle 4 is filled to empty the liquid medicine, the rear filling needle 4 replenishes the liquid and / or fills to empty the liquid medicine.

[0038] During the tail liquid filling stage, the container conveying device 1 intermittently conveys a container 6 to the designated weighing mechanism 5 of the first weighing station 2 for weighing, and then conveys the container 6 to the designated weighing mechanism 5 of the second weighing station 7 for weighing, and the container 6 is filled by the filling needle 4. If the filling amount is unqualified, the adjacent filling needle 4 will replenish the liquid. Each container 6 is weighed and replenished with liquid on a weighing mechanism 5 designated by the first weighing station 2. After the container 6 is filled to a qualified level, it is then conveyed backward by the container conveying device 1. The filling needle rack 4 only needs to establish a relative motion relationship with a designated weighing mechanism 5 of the second weighing station 7 to meet the requirements of replenishing the container 6 with an unqualified filling amount. That is, it is easier to set the motion relationship between the filling needle rack 4 and the designated weighing mechanism 5 below, further reducing the difficulty and cost of setting up the automation program. Moreover, there is only one container 6 for weighing and refilling on a designated weighing mechanism 5 of the second weighing station 7, and the refilling requirement of only one container 6 needs to be met at a time. The time required for refilling one container 6 is shorter than the time required for refilling multiple containers 6 at the same time, thereby further reducing the waiting time of the container conveying device 1 for refilling at the second weighing station 7, and further improving the overall production efficiency.

[0039] Furthermore, in this embodiment, during the tail liquid filling stage, the container conveying device 1 conveys containers 6 at intervals of at least the total width of n containers 6. This is conducive to making the intermittent conveying mode of the container conveying device 1 consistent during the tail liquid filling stage and the normal filling stage, except that the intervals of the containers 6 on the container conveying mechanism 12 are different. For example, during the normal filling stage, the intervals of the containers 6 on the container conveying mechanism 12 are the same as the intervals of the adjacent weighing mechanisms 5 on the first weighing station 2 and the second weighing station 7, while during the tail liquid filling stage, the intervals of the containers 6 on the container conveying mechanism 12 are the same as the total length of the first weighing station 2 or the second weighing station 7.

[0040] The liquid medicine filling method of the present invention actively replenishes liquid in a single container 6 with a large volume (high profit). A specific example of the tail liquid filling stage of this embodiment is as follows: Figure 1As shown, the weighing mechanisms 5 of the first weighing station 2 and the second weighing station 7 are the same, and are each provided with four. The weighing mechanisms 5 of the first weighing station 2 are respectively recorded as T1, T2, T3, and T4 from front to back along the conveying direction of the container conveying mechanism 12, and the weighing mechanisms 5 of the second weighing station 7 are respectively recorded as G1, G2, G3, and G4 from front to back along the conveying direction of the container conveying mechanism 12. There are eight filling needles 4 on the filling needle rack 3, which are respectively recorded as J1, J2, J3, J4, J5, J6, J7, and J8 from front to back along the conveying direction of the container conveying mechanism 12. The container conveying mechanism 12 conveys the containers 6 at intervals, so that adjacent containers 6 are spaced a distance of four containers 6 apart. The container conveying mechanism 12 conveys a container 6 to the designated T4 weighing mechanism 5 of the first weighing station 2 for weighing, and then conveys the container 6 to the designated G4 weighing mechanism 5 of the second weighing station 7 for weighing, and the container 6 is filled by the filling needle 4. When the filling amount is unqualified, the adjacent filling needle 4 is used to replenish the liquid.

[0041] The specific process of the tail liquid filling stage is as follows:

[0042] (1) Control the bottle feeding, and the container conveying mechanism 12 only feeds the container 6 corresponding to the G4 weighing mechanism 5 on the second weighing station 7 in each group;

[0043] (2) Figure 1 As shown in A1, the filling needle rack 3 moves: the filling needle 4 of No. J1 is moved to the top of the weighing mechanism 5 of No. G4;

[0044] (3) Figure 1 As shown in A1, the filling needle 4 of No. J1 fills and weighs the container 6 on the weighing mechanism 5 of No. G4 until the filling amount is qualified, and then the next container 6 is filled;

[0045] (4) When the target filling volume cannot be reached after the liquid filling of the J1 filling needle 4 continues for a period of time (the time can be set, for example, 30 seconds), the filling needle rack 3 is moved to place the J2 filling needle 4 above the G4 weighing mechanism 5, and the container 6 on the G4 weighing mechanism 5 is continuously filled with liquid until the filling volume is qualified. Figure 1 As shown in A2;

[0046] (5) When the target filling volume is still not reached after the liquid filling of the filling needle 4 of J2 continues for a period of time (the time can be set, for example, 30 seconds), the filling needle rack 3 is moved to make the filling needle 4 of J3 above the weighing mechanism 5 of G4, and the container 6 on the weighing mechanism 5 of G4 is continuously replenished with liquid until the filling volume is qualified. This rule is followed until the filling needle 4 of J8 completes the final filling on the weighing mechanism 5 of G4. At this point, the filling of all the liquid medicines is completed. Figure 1 As shown in A3, the tail liquid filling mode ends;

[0047] (6) Unqualified containers 6 and empty containers 6 are discarded; the needle filling rack 4 returns to the original position. Figure 1 As shown in A4.

[0048] The advantages are as follows: while the last container 6 is being filled, the conveying action of the container conveying mechanism 12 in the tail liquid filling stage is consistent, and there is no need to switch to other modes (such as the single container 6 conveying mode), thereby improving production efficiency and stability; the structure of the container conveying device 1 does not need to be changed, the liquid dispenser does not need to be tilted, and there is no need to calculate the amount of liquid replenishment, so any filling requirement can be met.

[0049] The existing liquid medicine filling method has the following characteristics:

[0050] (1) During the normal filling stage, four bottles are moved at a time, while during the tail liquid filling stage, only one bottle is moved at a time. Therefore, there are two sets of bottle moving programs to switch between. After the tail liquid is filled, the program needs to be switched back. During both switches, the bottles on the equipment need to be emptied, which delays efficiency for a long time and easily triggers the instability alarm of the equipment.

[0051] (2) During the tail liquid filling stage, the bottles are filled continuously. After the tail liquid filling is completed, there are a large number of bottles on the walking beam that need to be emptied.

[0052] (3) Aseptic production equipment: The door is not allowed to be opened during the production process. Generally, the bottle receiving tray is very small and cannot bear too many rejected bottles.

[0053] Embodiment three:

[0054] Figure 2 The third embodiment of the liquid medicine filling method of the present invention is shown. The liquid medicine filling method of this embodiment is basically the same as that of the first or second embodiment, and the difference lies in that the liquid medicine filling method also includes a normal filling stage, and the container conveying device 1 intermittently conveys n containers 6 at a time.

[0055] Furthermore, in this embodiment, the container conveying device 1 is provided with a normal filling station 8 between the first weighing station 2 and the second weighing station 7. The normal filling stage is carried out at the normal filling station 8, and the filling needle rack 3 drives each filling needle 4 to move synchronously with the container conveying device 1 for follow-up filling.

[0056] Furthermore, in this embodiment, in this embodiment, the number of weighing mechanisms 5 on the first weighing station 2 and the second weighing station 7 is set to n.

[0057] Furthermore, in this embodiment, in this embodiment, the length of the normal filling station is greater than an integer multiple of the sum of the widths of the n containers 6 .

[0058] A specific example of the normal filling stage of this embodiment is as follows Figure 2As shown, the weighing mechanisms 5 of the first weighing station 2 and the second weighing station 7 are the same, and both are provided with four. The weighing mechanisms 5 of the first weighing station 2 are respectively marked as T1, T2, T3, and T4 from front to back along the conveying direction of the container conveying mechanism 12, and the weighing mechanisms 5 of the second weighing station 7 are respectively marked as G1, G2, G3, and G4 from front to back along the conveying direction of the container conveying mechanism 12. There are eight filling needles 4 on the filling needle rack 3, which are respectively marked as J1, J2, J3, J4, J5, J6, J7, and J8 from front to back along the conveying direction of the container conveying mechanism 12. The container conveying mechanism 12 conveys four or eight containers 6 to the normal filling station at a time, and the filling needle rack 3 drives each filling needle 4 to move synchronously with the container conveying device 1 to follow the filling.

[0059] Embodiment 4:

[0060] Figure 3 The fourth embodiment of the method for filling medicinal liquid of the present invention is shown. The method for filling medicinal liquid of this embodiment is basically the same as that of the first embodiment, the second embodiment or the third embodiment, and the difference lies in that the method for filling medicinal liquid also includes an emptying and filling stage, which is performed on each weighing mechanism 5 of the first weighing station 2. The container conveying device 1 conveys a row of containers 6 to the first weighing station 2 at a time, so that each weighing mechanism 5 has a container 6, and the filling needles 4 corresponding to each first weighing mechanism 5 empty the air in the filling and exhaust pipe as a whole.

[0061] A specific example of the emptying and filling stage of this embodiment is as follows Figure 3 As shown, the weighing mechanisms 5 of the first weighing station 2 and the second weighing station 7 are the same, and there are four of them, that is, n=4. The weighing mechanisms 5 of the first weighing station 2 are respectively recorded as T1, T2, T3, and T4 from front to back along the conveying direction of the container conveying mechanism 12. The weighing mechanisms 5 of the second weighing station 7 are respectively recorded as G1, G2, G3, and G4 from front to back along the conveying direction of the container conveying mechanism 12. There are eight filling needles 4 on the filling needle rack 3, which are respectively recorded as J1, J2, J3, J4, J5, J6, J7, and J8 from front to back along the conveying direction of the container conveying mechanism 12. The container conveying mechanism 12 conveys the containers 6 at intervals, so that adjacent containers 6 are spaced a distance of four containers 6 apart. The container conveying mechanism 12 conveys four containers 6 to the second weighing station 7 at a time. The filling needles 4 of No. J1, J2, J3, and J4 are first moved to the second weighing station 7 and aligned with the weighing mechanisms 5 of No. G1, G2, G3, and G4 on the second weighing station 7, respectively, to be emptied and filled. Figure 3 As shown in B1; the filling needles 4 of J4, J5, J6, J7 and J8 are then moved to the second weighing station 7, and aligned with the weighing mechanisms 5 of G1, G2, G3 and G4 on the second weighing station 7, respectively, to empty and fill. Figure 3 As shown in B2.

[0062] Embodiment five:

[0063] Figure 4 A container conveying device is shown, which is used to implement the liquid medicine filling method of the first, second, third and fourth embodiments. The container conveying device 1 includes an intermittent feeding mechanism 11 and a container conveying mechanism 12. The first weighing station 2 and the second weighing station 7 are arranged along the container conveying mechanism 12. The intermittent feeding mechanism 11 is docked with the container conveying mechanism 12, and is used to intermittently supply containers 6 to the container conveying mechanism 12. The intermittent feeding mechanism 11 is docked with the container conveying mechanism 12, and is used to intermittently supply containers 6 to the container conveying mechanism 12, so that the containers 6 on the container conveying mechanism 12 are spaced front and back to meet the requirement that during the intermittent conveying process of the container conveying mechanism 12, the container 6 is first weighed on the designated weighing mechanism 5 of the first weighing station 2, and then weighed on the designated weighing mechanism 5 of the second weighing station 7.

[0064] Furthermore, in this embodiment, the container conveying mechanism 12 conveys the containers 6 at intervals, and when the front container 6 arrives at the designated weighing mechanism 5 of the second weighing station 7, the corresponding container 6 behind arrives at the designated weighing mechanism 5 of the first weighing station 2. This allows the designated weighing mechanism 5 of the first weighing station 2 and the designated weighing mechanism 5 of the second weighing station 7 to work simultaneously, further improving the overall production efficiency.

[0065] Furthermore, in this embodiment, the intermittent feeding mechanism 11 includes a bottle feeding mechanism, a bottle feeding dial wheel and a bottle blocking valve. The bottle feeding mechanism is connected to the container conveying mechanism 12 through the bottle feeding dial wheel. The bottle blocking valve is arranged between the bottle feeding mechanism and the bottle feeding dial wheel. The position of the bottle blocking valve to the first weighing station 2 and the second weighing station 7 is fixed. The feeding requirements of the intermittent conveying of the container conveying mechanism 12 can be met by controlling the blocking and releasing operation of the bottle blocking valve. The action of the bottle blocking valve can control the bottle feeding at the designated position according to the current bottle number of the bottle feeding dial wheel.

[0066] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A method for filling a liquid medicine, comprising a container conveying device (1), a first weighing station (2) and a second weighing station (7) arranged along the container conveying device (1), and a needle filling rack (3) movably arranged above the container conveying device (1), wherein a plurality of needle fillings (4) are arranged in an array along the container conveying direction on the needle filling rack (3), and the first weighing station (2) and the second weighing station (7) are both provided with a plurality of weighing mechanisms (5) arranged in an array corresponding to the spacing between the needle fillings (4), characterized in that: The container conveying device (1) intermittently conveys at least one container (6) to a designated weighing mechanism (5) of a first weighing station (2) for weighing, and then conveys the container (6) to a designated weighing mechanism (5) of a second weighing station (7) for weighing, and the container (6) is filled by a filling needle (4). When the filling amount is unqualified, the adjacent filling needle (4) is used to replenish the liquid.

2. The liquid medicine filling method according to claim 1, characterized in that: The container conveying device (1) comprises an intermittent feeding mechanism (11) and a container conveying mechanism (12); the first weighing station (2) and the second weighing station (7) are arranged along the container conveying mechanism (12); the intermittent feeding mechanism (11) is connected to the container conveying mechanism (12) and is used to intermittently supply containers (6) to the container conveying mechanism (12).

3. The liquid medicine filling method according to claim 2, characterized in that: The container conveying mechanism (12) conveys the containers (6) at intervals, and when the front container (6) arrives at the designated weighing mechanism (5) of the second weighing station (7), the corresponding container (6) behind arrives at the designated weighing mechanism (5) of the first weighing station (2).

4. The liquid medicine filling method according to claim 1, characterized in that: The liquid medicine filling method comprises a tail liquid filling stage. In the tail liquid filling stage, each container (6) is placed on a weighing mechanism (5) designated by the first weighing station (2). The container conveying device (1) conveys one container (6) to the weighing mechanism (5) intermittently, and conveys one bottle at a time. Each filling needle (4) moves to the weighing mechanism (5) one by one to fill the container (6) below. After the front filling needle (4) is filled until the liquid medicine is emptied, the rear filling needle (4) replenishes the liquid and / or fills until the liquid medicine is emptied.

5. The liquid medicine filling method according to claim 4, characterized in that: In the tail liquid filling stage, the container conveying device (1) conveys containers (6) at intervals equal to a total width of at least n containers (6).

6. The liquid medicine filling method according to claim 1, characterized in that: The liquid medicine filling method also includes a normal filling stage, in which the container conveying device (1) intermittently conveys n containers (6) at a time.

7. The liquid medicine filling method according to claim 6, characterized in that: The container conveying device (1) is provided with a normal filling station (8) between the first weighing station (2) and the second weighing station (7). The normal filling stage is carried out at the normal filling station (8). The filling needle rack (3) drives each filling needle (4) to move synchronously with the container conveying device (1) to perform follow-up filling.

8. The liquid medicine filling method according to claim 7, characterized in that: The number of weighing mechanisms (5) on the first weighing station (2) and the number of weighing mechanisms (5) on the second weighing station (7) are both set to n.

9. The liquid medicine filling method according to claim 8, characterized in that: The length of the normal filling station is greater than an integer multiple of the sum of the widths of the n containers (6).

10. The liquid medicine filling method according to any one of claims 1 to 9, characterized in that: The liquid medicine filling method also includes an emptying and filling stage, which is performed on each weighing mechanism (5) of the first weighing station (2). The container conveying device (1) conveys a row of containers (6) to the first weighing station (2) at a time, so that each weighing mechanism (5) has a container (6), and the filling needles (4) corresponding to each first weighing mechanism (5) integrally empty the air in the filling discharge pipe.

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