Tablet weight difference automatic measuring device and measuring method thereof

Abstract

The invention discloses a tablet weight difference automatic measuring device and a measuring method thereof.The measuring device comprises a machine table, a jig, a sorting mechanism, a weighing device and a transfer mechanism are arranged on the machine table, the jig is detachably connected with a plurality of material boxes used for containing tablets, the transfer mechanism is movably arranged on the machine table, and the sorting mechanism is arranged on the machine table. The transferring mechanism can grab and transfer the material boxes and the tablets, the sorting mechanism and the weighing device are arranged on one side of the jig, the sorting mechanism is used for separating and sorting the tablets in each material box one by one, and the weighing device can weigh the tablets. The measuring device is high in automation degree, batch detection of different tablets can be achieved through the arrangement of the multiple material boxes, the detection efficiency is high, the labor intensity of operators and the risk of missed recording and wrong recording are reduced, and the measuring precision of the weight of the tablets is effectively guaranteed.

Description

Technical Field

[0001] This invention relates to the field of pharmaceutical testing technology, and in particular to an automatic tablet weight variation measuring device and method thereof. Background Technology

[0002] Ideally, the actual weight of the same type and specification of medicine should be equal to the standard value. However, due to the influence of various factors such as people, machines, materials, methods, and environment during the production process, the actual weight of the medicine produced during the production process fluctuates and deviates from the standard value. Moreover, the weight of each medicine is not consistent; some are lighter, some are heavier, some have more volume, and some have less volume. This is the weight difference.

[0003] According to the relevant requirements of the Chinese Pharmacopoeia, existing drug tablets need to meet the weight variation requirements in General Chapter "0101 Tablets" of the Chinese Pharmacopoeia, requiring weight variation testing of drug tablets. For each batch of products, 20 tablets to be tested are taken, the total weight is determined, the average tablet weight is calculated, and then the weight of each individual tablet is weighed. The weight of each tablet is compared with the average tablet weight. According to regulations, no more than two tablets should exceed the weight variation limit, and no single tablet should exceed the limit by more than 100%. Currently, the testing method for drug tablets involves manually weighing each tablet one by one, recording the weight, and then calculating. This existing technology has the following drawbacks: For enterprises and testing institutions that conduct large-scale daily testing, a significant amount of time is required for manual weighing of drug tablets. Manual testing is inefficient, and prolonged, repetitive, and inefficient manual work can easily cause fatigue for testing personnel. Furthermore, data recording relies on manual entry, which carries the risk of errors and omissions, affecting measurement accuracy. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic tablet weight difference measuring device and method, which has a simple structure, is easy to operate, and can realize the automatic measurement and comparison of tablets with high measurement accuracy.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] In a first aspect, an automatic tablet weight variation measuring device is provided, comprising a machine base, on which a fixture, a sorting mechanism, a weighing device, and a transfer mechanism are provided. Multiple tablet containers are detachably connected to the fixture. The transfer mechanism is movably mounted on the machine base and is capable of gripping and transferring the tablet containers and the tablets. The sorting mechanism and the weighing device are located on one side of the fixture. The sorting mechanism is used to separate and sort the multiple tablets in each tablet container one by one, and the weighing device is capable of weighing the tablets.

[0007] As a preferred embodiment of the automatic tablet weight difference measuring device, the automatic tablet weight difference measuring device further includes a counting component. The sorting mechanism, the counting component, and the weighing device are arranged sequentially at intervals along a first direction. The counting component includes a counter, which is used to count the tablets moved from the sorting mechanism to the weighing device by the transfer mechanism.

[0008] As a preferred embodiment of the automatic tablet weight variation measuring device, it also includes a waste component, which includes a waste bin and a waste hopper. The waste bin is provided inside the machine, and the waste hopper is provided on the machine for collecting tablets exceeding the quantity requirement. The waste hopper and the sorting mechanism are spaced apart along a second direction. The discharge end of the waste hopper is connected to the waste bin. The transfer mechanism can move tablets exceeding the quantity requirement to the waste hopper. The first direction and the second direction are arranged at an angle.

[0009] As a preferred embodiment of the automatic tablet weight variation measuring device, the counting assembly further includes a first driving member, a mounting base, and a waste container. The first driving member is disposed on the machine base, and the driving end of the driving member is provided with the mounting base. The mounting base is provided with a first placement slot and a second placement slot at intervals along the second direction. The second placement slot is disposed adjacent to the waste hopper. The material box can be placed in the first placement slot, and the waste container can be placed in the second placement slot. The counter is spaced above the mounting base. The first driving member can drive the mounting base to move along the second direction, so that the material box or the waste container is located below the counter. The transfer mechanism can pick up the tablets in the sorting mechanism one by one and put them into the material box in the first placement slot, or the transfer mechanism can pick up the tablets in the sorting mechanism that exceed the quantity requirement and put them into the waste container in the second placement slot. The transfer mechanism can also pick up the waste container and pour the tablets in the waste container into the waste hopper.

[0010] As a preferred embodiment of an automatic tablet weight variation measuring device, the transfer mechanism includes a transfer component and a flipping component. The transfer component includes a first support, a second drive member, a third drive member, a fourth drive member, a first gripper, and a suction nozzle. The first support is disposed on the machine base, the second drive member is disposed on the first support, and the third drive member is disposed at the drive end of the second drive member. The second drive member can drive the third drive member to move along the first direction. The fourth drive member is disposed at the drive end of the third drive member and can drive the fourth drive member to move along the second direction. The first gripper and the suction nozzle are both disposed at the drive end of the fourth drive member. The fourth drive member can drive the first gripper and the suction nozzle to move along a third direction. The first gripper is used to grip or release the material box, and the suction nozzle is used to pick up or release the tablets. The first direction and the second direction are respectively set at an angle to the third direction.

[0011] The flipping assembly includes a second support and a first flipping mechanism, a second gripper, a second flipping mechanism, and a third gripper. The second support is disposed on the machine platform. The first flipping mechanism and the second flipping mechanism are both disposed on the second support, with the first flipping mechanism located above the sorting mechanism and the second flipping mechanism located above the waste hopper. The second gripper is disposed on the drive end of the first flipping mechanism and can grip the material box and be flipped by the first flipping mechanism to pour the tablets in the material box into the sorting mechanism. The third gripper is disposed on the drive end of the second flipping mechanism and can grip the waste box and be flipped by the second flipping mechanism to pour the tablets in the waste box into the waste hopper.

[0012] As a preferred embodiment of the automatic tablet weight difference measuring device, the automatic tablet weight difference measuring device further includes a machine cover and a feeding assembly. The sorting mechanism, the weighing device, and the transfer mechanism are all disposed inside the machine cover. The feeding assembly includes a conveyor and the fixtures. The conveyor is disposed on the machine platform and located inside the machine cover. A portion of the conveyor extends outside the machine cover. At least two fixtures are spaced apart on the conveyor. The conveyor is used for switching between the fixtures inside and outside the machine cover.

[0013] As a preferred embodiment of the automatic tablet weight variation measuring device, the automatic tablet weight variation measuring device further includes a barcode scanner and an industrial control computer. The barcode scanner is used to identify the information of the sample vials of the tablets placed in front of the material box and record it into the industrial control computer.

[0014] Secondly, a method for automatically measuring tablet weight variation is provided, comprising the aforementioned automatic tablet weight variation measuring device, including the following steps:

[0015] S10. Pour the tablets from the multiple sample vials into the multiple material boxes of the fixture of the automatic tablet weight difference measuring device.

[0016] S20. The transfer mechanism of the automatic tablet weight difference measuring device picks up the material box at a set position and places it on the weighing device of the automatic tablet weight difference measuring device to obtain the total weight measurement value of all the tablets in the material box, and calculates the average value of the tablets in the material box.

[0017] S30. The transfer mechanism picks up the material box on the weighing device and pours the tablets in the material box into the sorting mechanism of the tablet weight difference automatic measuring device. The sorting mechanism can separate and sort the tablets one by one. The transfer mechanism picks up the tablets on the sorting mechanism one by one and weighs them to obtain the weight measurement value of each tablet. The weight measurement value of each tablet is compared with the average value of the tablets.

[0018] As a preferred embodiment of the automatic measurement method for tablet weight variation, a counter is provided and the counter is set on a transfer platform between the sorting mechanism and the weighing device;

[0019] Step S20 includes the following specific steps:

[0020] S201, the transfer mechanism picks up the material box and pours the tablets in the material box into the sorting mechanism, and the sorting mechanism separates and sorts the tablets one by one;

[0021] S202, The transfer mechanism places the empty material box on the weighing device, and the weighing device weighs the material box and uses the weight of the material box as the standard to zero the data.

[0022] S203. The transfer mechanism places the material box on the weighing device onto the transfer platform. The transfer mechanism picks up the tablets on the sorting mechanism one by one and puts them into the material box on the transfer platform until the counter counts 20 tablets. The transfer mechanism then discards the remaining tablets in the sorting mechanism.

[0023] S204. The transfer mechanism picks up the material box on the transfer platform and places it on the weighing device to obtain the total weight measurement value of the 20 tablets in the material box, and calculates the average value of the tablets in the material box.

[0024] As a preferred embodiment of the automatic measurement method for tablet weight variation, step S30 includes the following specific steps:

[0025] S301, The transfer mechanism grabs the material box on the weigher to pour 20 tablets into the sorting mechanism and then places them on the transfer platform. The sorting mechanism separates and sorts the 20 tablets one by one.

[0026] S302. After the transfer mechanism picks up the first tablet adjacent to the transfer table from the sorting mechanism and places it into the material box of the transfer table, the counter counts to one. The transfer mechanism picks up the material box and the tablets in the material box on the transfer table and places them into the weighing device to weigh the tablets, obtains the weight measurement value of the first tablet, and compares the deviation between the weight measurement value of the first tablet and the average value of the tablets. The weighing device uses the weight measurement value of the first tablet as the standard to clear the data to zero.

[0027] S302. The transfer mechanism picks up the material box from the weighing device and places it on the transfer platform. The transfer mechanism then picks up the second tablet from the sorting mechanism adjacent to the transfer platform and places it on the material box of the transfer platform. After that, the counter counts to two. The transfer mechanism picks up the material box and the tablet in the material box on the transfer platform and places them on the weighing device to weigh the tablets to obtain the weight measurement value of the second tablet. The weight measurement value of the second tablet is compared with the average value of the tablets. The weighing device uses the weight measurement value of the second tablet as the standard to clear the data. This process is repeated to achieve the weight difference comparison of 20 tablets.

[0028] The beneficial effects of this invention are as follows: By using a transfer mechanism to grab and transfer the tablets in the container, multiple tablets can be poured into a sorting mechanism for individual separation and sorting, avoiding the stacking or aggregation of tablets that could affect the measurement of a single tablet. Combined with the grabbing and transfer of tablets by the transfer mechanism, the weighing device can measure the weight of the tablets, automatically and effectively acquiring tablet weight data and performing data comparison. This automatic tablet weight difference measurement device has a high degree of automation. By setting multiple containers, it can achieve batch detection of different tablets, resulting in high detection efficiency, reducing the labor intensity of operators and the risk of missed or incorrect recording, and effectively ensuring the measurement accuracy of tablet weight. Attached Figure Description

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0030] Figure 1 This is a schematic diagram (including the machine cover) of the automatic tablet weight difference measuring device according to an embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the automatic tablet weight difference measuring device according to an embodiment of the present invention (excluding the machine cover);

[0032] Figure 3 This is a schematic diagram of the transfer mechanism according to an embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram illustrating the cooperation between the sorting mechanism and the counting component in an embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of the feeding assembly according to an embodiment of the present invention;

[0035] Figure 6 This is a schematic diagram of the sorting mechanism according to an embodiment of the present invention;

[0036] Figure 7 This is a schematic diagram of the structure of the counting component according to an embodiment of the present invention;

[0037] Figure 8 This is a schematic diagram of the structure of the flipping component according to an embodiment of the present invention.

[0038] In the picture:

[0039] 1. Machine base; 11. First machine body; 12. Second machine body; 13. Protective box; 2. Fixture; 21. Material box; 3. Sorting mechanism; 31. Vibratory feeder; 32. First vertical vibration track; 33. Second vertical vibration track; 4. Weighing device; 5. Transfer mechanism; 51. Transfer assembly; 511. First support; 512. Second drive component; 513. Third drive component; 514. Fourth drive component; 515. First gripper; 516. Suction nozzle; 52. Tilting assembly; 521. Second support; 522. First tilting... 523. Turning mechanism; 524. Second gripper; 525. Second flipping mechanism; 526. Third gripper; 6. Counting assembly; 61. Counter; 62. First drive component; 63. Mounting base; 631. First placement slot; 632. Second placement slot; 64. Scrap box; 7. Scrap assembly; 71. Scrap bin; 72. Scrap hopper; 8. Machine cover; 9. Feeding assembly; 91. Conveyor; 911. Fifth drive component; 912. Sixth drive component; 913. Lifting cylinder; 92. Mounting bracket; 10. Barcode scanner. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0041] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0044] like Figures 1 to 8 As shown, the automatic tablet weight difference measuring device of this invention includes a machine base 1. The machine base 1 is equipped with a fixture 2, a sorting mechanism 3, a weighing device 4, and a transfer mechanism 5. The fixture 2 is detachably connected to multiple material boxes 21 for holding tablets. The transfer mechanism 5 is movably arranged on the machine base 1. The transfer mechanism 5 can grasp and transfer the material boxes 21 and tablets. The sorting mechanism 3 and the weighing device 4 are arranged on one side of the fixture 2. The sorting mechanism 3 is used to separate and sort the multiple tablets in each material box 21 one by one. The weighing device 4 can weigh the tablets.

[0045] Understandably, the transfer mechanism 5 grips and transfers the tablets in the container 21 so that multiple tablets can be poured into the sorting mechanism 3 for individual separation and sorting. This avoids the tablets from overlapping or clustering, which could affect the measurement of a single tablet. Combined with the gripping and transfer of the tablets by the transfer mechanism 5, the weighing device 4 can measure the weight of the tablets. It can automatically and effectively acquire the weight data of the tablets and perform data comparison. This automatic tablet weight difference measurement device has a high degree of automation. By setting up multiple containers 21, it can realize the batch detection of different tablets, which has high detection efficiency, reduces the labor intensity of operators and the risk of missed or incorrect recording, and effectively ensures the measurement accuracy of tablet weight.

[0046] Specifically, the transfer mechanism 5 can grasp the material box 21 and place it on the weighing device 4 to measure the total weight of the tablets and obtain the average weight of the tablets. The transfer mechanism 5 then grasps the material box 21 on the weighing device 4 and pours the tablets in the material box 21 into the sorting mechanism 3. The sorting mechanism 3 sorts the tablets one by one. The transfer mechanism 5 then grasps the tablets sorted by the sorting mechanism 3 one by one and places them on the weighing device 4 to weigh each tablet individually, obtaining the deviation between the measured value of each tablet and the average value. This automatic tablet weight difference measuring device has a high degree of automation and detection efficiency. It should be noted that when the transfer mechanism 5 places the material box 21 on the weighing device 4, the weight measured by the weighing device 4 includes the weight of the material box 21 and the weight of all the tablets in the material box 21. Therefore, the weight of the material box 21 should be subtracted from the measurement result of the weighing device 4 and then divided by the number of tablets to obtain the average weight of the tablets.

[0047] Furthermore, such as Figure 2 , Figure 6 and Figure 7As shown, the automatic tablet weight difference measuring device also includes a counting component 6. The sorting mechanism 3, the counting component 6 and the weighing device 4 are arranged at intervals along the first direction. The counting component 6 includes a counter 61, which is used to count the tablets moved from the sorting mechanism 3 to the weighing device 4 by the transfer mechanism 5. This can reduce the labor intensity of manual operation and improve the efficiency of tablet weight difference measurement. In this embodiment, the counting component 6 also includes a transfer station (it should be noted that the transfer station is a designated area of ​​the machine 1 in this solution), and the transfer station is located between the sorting mechanism 3 and the weighing device 4. Taking the counter 61 set on the transfer station as an example, the material box 21 is taken out from the fixture 2 by the transfer mechanism 5 and the tablets are poured into the sorting mechanism 3 and then placed on the weighing device 4 to measure the weight of the material box 21. The transfer mechanism 5 then places the material box 21 on the transfer station. The transfer mechanism 5 picks up the sorted tablets in the sorting mechanism 3 one by one and places them into the material box 21 on the transfer station. The counter 61 can count the number of tablets picked up by the transfer mechanism 5 from the sorting mechanism 3 to the material box 21 on the transfer station. After picking up a specified number of tablets, the transfer mechanism 5 places the material box 21 on the transfer station on the weighing device 4 to measure the total weight of the specified number of tablets and calculate the average value. The transfer mechanism 5 discards the tablets in the sorting mechanism 3 that exceed the specified number.

[0048] The counter 61 counts the number of tablets to be measured in the container 21, eliminating the need to count each tablet individually when loading them from the sample vial into the container 21. This reduces manual labor and improves the efficiency of tablet weight variation measurement. Furthermore, after the container 21 is removed from the fixture 2 by the transfer mechanism 5 and the tablets are poured into the sorting mechanism 3, it is placed on the weighing device 4 for weight measurement. The weighing device 4 is zeroed using the weight of the container 21 as the standard value. This ensures that when the container 21 receives a specified number of tablets from the sorting mechanism 3 on the worktable, the measured value is the total weight of the specified number of tablets. Dividing this total weight by the specified number gives the average value of the specified number of tablets, effectively ensuring the accuracy of tablet measurement and reducing the impact of weight variation in the container 21 on tablet weight measurement.

[0049] Of course, the total weight of all the tablets in the container 21 can also be measured and the total number can be recorded by the counter 61. No further restrictions are imposed here.

[0050] According to the relevant requirements of the Chinese Pharmacopoeia, existing drug tablets need to meet the weight variation requirements in General Chapter "0101 Tablets" of the Chinese Pharmacopoeia, and therefore, weight variation testing of drug tablets is required. For each batch of products, 20 drug tablets to be tested need to be taken, the total weight determined, the average tablet weight calculated, and then the weight of each tablet individually determined. The weight of each tablet is compared with the average tablet weight. According to regulations, no more than 2 tablets should exceed the weight variation limit, and no single tablet should exceed the limit by more than 100%.

[0051] Therefore, in this embodiment, the specified quantity is 20 tablets. The material box 21 of the fixture 2 contains at least 20 tablets. After the transfer mechanism 5 picks up 20 tablets from the sorting mechanism 3 and places them into the material box 21 on the transfer platform, the transfer mechanism 5 places the material box 21 on the transfer platform into the weighing device 4 to measure the total weight of the 20 tablets and calculate the average value. It also discards any tablets exceeding 20 tablets on the sorting mechanism 3 to reduce the impact when the subsequent 20 tablets are sorted and used again.

[0052] Of course, after the weighing device 4 measures the total weight of 20 tablets in the material box 21 to obtain the average value, the transfer mechanism 5 grabs the material box 21 from the weighing device 4 and pours the 20 tablets from the material box 21 into the sorting mechanism 3. Then, the material box 21 is placed on the transfer platform for receiving. The transfer mechanism 5 can grab the tablets sorted by the sorting mechanism 3 one by one and place them into the material box 21. The material box 21 is then placed on the weighing device 4 to weigh the 20 tablets one by one to obtain the deviation between the measured value of each tablet and the average value. For example, when the transfer mechanism 5 grabs the tablets from the sorting mechanism 3 and places them into the material box 21, the counter 61 counts to ensure that the transfer mechanism 5 grabs the tablets effectively. Then, the transfer mechanism 5 grabs the material box 21 and places it on the weighing device 4 to measure the weight of the tablet. This avoids the transfer mechanism 5 grabbing empty tablets and ensures the validity of the tablet measurement data.

[0053] It is worth noting that, such as Figure 2 , Figure 4 and Figure 6As shown, in this embodiment, the sorting mechanism 3 includes a vibrating plate 31, a first linear vibrating track 32 connected to the vibrating plate 31, and a second linear vibrating track 33 connected to the end of the first linear vibrating track 32 away from the vibrating plate 31. The length of the first linear vibrating track 32 extends along a second direction, and the length of the second linear vibrating track 33 extends along a first direction. The second linear vibrating track 33 and the vibrating plate 31 are spaced apart along the second direction. The counter 61 is spaced apart along the first direction on the side of the second linear vibrating track 33 adjacent to the weighing device 4. The transfer mechanism 5 pours the tablets from the material box 21 into the vibrating plate 31. The vibrating plate 31 can transfer the tablets to the first linear vibrating track 32. The first linear vibrating track 32 can arrange the tablets one by one in an orderly manner and transfer them one by one to the second linear vibrating track 33 for arrangement. The vibrating plate 31 is designed to receive the tablets poured from the material box 21, reducing the possibility of tablets falling during the pouring process. Through the cooperation of the first linear vibrating track 32 and the second linear vibrating track 33, the tablets can be effectively sorted one by one. The second straight vibration track 33 and the vibrating plate 31 are spaced apart along the second direction. The structure of the sorting mechanism 3 is reasonable. Compared with directly using a straight vibration track extending along the first direction, the first straight vibration track 32 extends along the second direction and the second straight vibration track 33 extends along the first direction. This structure ensures the length of the tablet track while reducing the space occupied, resulting in a compact structure.

[0054] In addition, such as Figure 2 and Figure 4 As shown, both the vibratory plate 31 and the linear vibrating track will vibrate. In order to reduce the impact of vibration on the weighing device 4, the machine base 1 includes a first body 11 and a second body 12 arranged at intervals. The sorting mechanism 3 is set on the first body 11, and the weighing device 4 is set on the second body 12, so as to avoid the impact of vibration generated by the vibratory plate 31 and the linear vibrating track on the measurement of the weighing device 4 and improve the measurement stability of the weighing device 4.

[0055] Furthermore, the automatic tablet weight difference measuring device also includes a waste component 7, which includes a waste bin 71 and a waste hopper 72. The waste bin 71 is located within the machine base 1, and the waste hopper 72 is positioned on the machine base 1 to collect tablets exceeding the required quantity. The waste hopper 72 and the sorting mechanism 3 are spaced apart along a second direction. The discharge end of the waste hopper 72 is connected to the waste bin 71. The transfer mechanism 5 can move tablets exceeding the specified quantity from the sorting mechanism 3 to the waste hopper 72. The first and second directions are arranged at an angle. It should be noted that a receiving groove is provided on one side of the machine base 1, and the waste bin 71 is slidably connected to the receiving groove, facilitating the cleaning of tablets from the waste bin 71. Alternatively, the waste bin 71 can also be a collection bucket, placed directly within the machine base 1. The transfer mechanism 5 can individually pick up tablets exceeding 20 tablets from the vibrating track and transfer them to the waste hopper 72, from which they are then conveyed to the waste bin 71 for collection.

[0056] Furthermore, such as Figure 6 As shown, the counting component 6 also includes a first driving member 62, a mounting base 63, and a waste box 64. The first driving member 62 is disposed on the transfer platform, and the driving end of the driving member is provided with the mounting base 63. The mounting base 63 is provided with a first placement slot 631 and a second placement slot 632 at intervals along the second direction. The second placement slot 632 is disposed adjacent to the waste hopper 72. The material box 21 can be placed in the first placement slot 631, and the waste box 64 can be placed in the second placement slot 632. The first driving member 62 can drive the mounting base 63 to move along the second direction so that the material box 21 or the waste box 64 is located below the counter 61 for receiving materials. The transfer mechanism 5 can pick up the tablets in the sorting mechanism 3 one by one and put them into the material box 21 in the first placement slot 631, or the transfer mechanism 5 can pick up all the tablets in the sorting mechanism 3 that exceed the specified quantity requirement and put them into the waste box 64 in the second placement slot 632. Then the transfer mechanism 5 picks up the waste box 64 and pours the tablets in the waste box 64 into the waste hopper 72. The placement of the first placement slot 631 and the second placement slot 632 facilitates the improvement of placement accuracy and stability of the material box 21 and the waste box 64. The presence of the counter 61 inevitably hinders the gripping of the material box 21 or the waste box 64 by the transfer mechanism 5. Therefore, the first driving member 62 drives the mounting base 63 so that the material box 21 or the waste box 64 can be spaced apart from the counter 61 along the second direction, thereby facilitating the gripping of the material box 21 or the waste box 64 by the transfer mechanism 5.

[0057] In some embodiments, such as Figure 3 As shown, the transfer mechanism 5 includes a transfer component 51 and a flipping component 52. The transfer component 51 includes a first support 511, a second drive member 512, a third drive member 513, a fourth drive member 514, a first gripper 515, and a suction nozzle 516. The first support 511 is mounted on the machine base 1, the second drive member 512 is mounted on the first support 511, and the third drive member 513 is mounted on the drive end of the second drive member 512. The second drive member 512 can drive the third drive member 513 to move along a first direction, and the fourth drive member 514... A driving member 514 is disposed at the driving end of a third driving member 513. The third driving member 513 can drive the fourth driving member 514 to move along a second direction. A first gripper 515 and a suction nozzle 516 are both disposed at the driving end of the fourth driving member 514. The fourth driving member 514 can drive the first gripper 515 and the suction nozzle 516 to move along a third direction. The first gripper 515 is used to grip or release the material box 21, and the suction nozzle 516 is used to suck up or release the tablets. The first and second directions are respectively set at an angle to the third direction. Figure 8As shown, the flipping assembly 52 includes a second support 521, a first flipping mechanism 522, a second gripper 523, a second flipping mechanism 524, and a third gripper 525. The second support 521 is mounted on the machine base 1. The first flipping mechanism 522 and the second flipping mechanism 524 are both mounted on the second support 521. The first flipping mechanism 522 is located above the sorting mechanism 3, and the second flipping mechanism 524 is located above the waste hopper 72. The second gripper 523 is located at the drive end of the first flipping mechanism 522. The second gripper 523 can grab the material box 21 and flip it by the first flipping mechanism 522 to pour the tablets in the material box 21 into the sorting mechanism 3. The third gripper 525 is located at the drive end of the second flipping mechanism 524. The third gripper 525 can grab the waste box 64 and flip it by the second flipping mechanism 524 to pour the tablets in the waste box 64 into the waste hopper 72.

[0058] In other words, the second driving component 512, the third driving component 513, and the fourth driving component 514 are used to move the first gripper 515 and the suction nozzle 516 along the first, second, and third directions, achieving movement in multiple directions in space with a high degree of freedom. The second driving component 512, the third driving component 513, and the fourth driving component 514 are one type of linear drive mechanism such as a cylinder or an electric cylinder. Of course, without considering the space occupation, the second driving component 512, the third driving component 513, and the fourth driving component 514 can be integrated into a multi-axis manipulator. In this embodiment, the flipping component 52 is separated from the transfer component 51, reducing the complexity of the fourth driving component 514 structure, thereby reducing the possibility of interference or collision between the driving end of the fourth driving component 514 and other structures during movement, enabling the gripping of the material box 21 or the suction of tablets in a narrower area. Of course, in other embodiments, the flipping mechanism can be integrated into the driving end of the fourth driving component 514, and the first gripper 515 can be set on the flipping mechanism, but this will not be elaborated on here.

[0059] Furthermore, such as Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the automatic tablet weight difference measuring device also includes a housing 8 and a feeding assembly 9. The sorting mechanism 3, weighing device 4, and transfer mechanism 5 are all located inside the housing 8. The feeding assembly 9 includes a conveyor 91 and fixtures 2. The conveyor 91 is mounted on the machine base 1 and located inside the housing 8, with a portion extending outside the housing 8. At least two fixtures 2 are spaced apart on the conveyor 91, which is used for switching between fixtures 2 inside and outside the housing 8. Each fixture 2 contains multiple material boxes 21. After all material boxes 21 on the fixtures 2 inside the housing 8 have been measured, the conveyor 91 transfers the tested fixtures 2 inside the housing 8 to the outside of the housing 8, and transfers the loaded fixtures 2 outside the housing 8 back inside for further processing. This process is repeated, enabling continuous measurement of multiple tablets without interruption, resulting in high detection efficiency. The housing 8 enhances the protection of structures such as the transfer mechanism 5, sorting mechanism 3, and weighing device 4, reducing the possibility of operators being struck by moving structures.

[0060] Specifically, taking two fixtures 2 as the first fixture 2 and the second fixture 2 respectively, the loading assembly 9 also includes a mounting frame 92. The conveying component 91 includes a fifth drive component 911, a sixth drive component 912, and a lifting cylinder 913. The fifth drive component 911 and the sixth drive component 912 are arranged vertically at intervals on the mounting frame 92, and both the fifth drive component 911 and the sixth drive component 912 are driven in a second direction. The fifth drive component 911 is located above the sixth drive component 912. The mounting frame 92 has a first position and a second position. The first position is located outside the machine cover 8 for loading, and the second position is located inside the machine cover 8. The fifth drive component 911 can drive the first fixture 2 to alternate between the first position and the second position. The driving end of the sixth drive component 912... A lifting cylinder 913 is provided, and a second fixture 2 is mounted on the lifting cylinder 913. The lifting cylinder 913 can lift the second fixture 2 and move it vertically. Taking the initial state where the first fixture 2 is in the second position and the second fixture 2 is in the first position after loading is completed as an example, the lifting cylinder 913 drives the second fixture 2 to move downward. The fifth driving member 911 drives the first fixture 2 to move from the second position to the first position to facilitate subsequent loading. At the same time, the sixth driving member 912 drives the lifting cylinder 913 and the second fixture 2 to move to the second position. Then, the lifting cylinder 913 drives the second fixture 2 to move upward, thereby realizing the alternation of the positions of the first fixture 2 and the second fixture 2. In this embodiment, the sixth driving member 912 is driven by a conveyor belt and a guide rail.

[0061] In addition, combined Figure 1As shown, a protective box 13 is also provided at the second position of the machine 1. The protective box 13 includes a box body and a box cover. The box body has a receiving cavity, and the part of the feeding assembly 9 located outside the machine cover 8 is set in the receiving cavity. The box body is provided with a loading port for feeding the material box 21 in the fixture 2 located at the second position. The box cover is rotatably connected to the box body to open or close the loading port. The protective box 13 can further ensure the safety of equipment use and prevent the moving mechanism from causing injury to the operator. In addition, the control button can be set on the protective box 13 so that the operator can press the control button to switch between the two fixtures 2 after the loading is completed.

[0062] Preferably, the automatic tablet weight variation measuring device further includes a barcode scanner 10 and an industrial control computer. The barcode scanner 10 is used to identify the information of the sample vials of tablets placed in front of the material box 21 and input it into the industrial control computer. For example, the operator scans the QR code information on the first sample vial to identify the information of the tablets inside the sample vial and uploads it to the industrial control computer. Then, the operator pours the tablets from the sample vial into the first material box 21 of the fixture 2. The operator then uses the barcode scanner 10 to scan the information of the second sample vial and pours the tablets from the sample vial into the second material box 21, and so on. This achieves accurate measurement of multiple tablets and facilitates traceability. Through the linkage between the barcode scanner 10 and the industrial control computer, the sample vial information can be automatically identified and the data can be quickly entered into the system, avoiding manual input errors and significantly improving work efficiency.

[0063] Optionally, the automatic tablet weight variation measuring device also includes a display screen on which measurement data and tablet information can be displayed, improving the convenience of data understanding for operators.

[0064] like Figures 1 to 6 As shown, embodiments of the present invention also provide an automatic method for measuring tablet weight variation, and provide an automatic tablet weight variation measuring device according to any of the above embodiments, comprising the following steps:

[0065] S10. Pour the tablets from multiple sample bottles into the multiple material boxes 21 of the fixture 2 of the automatic tablet weight difference measuring device; that is, one sample bottle corresponds to one material box 21, so that the tablets in the sample bottle are placed in the material box 21 for measurement; of course, if there are many tablets in the sample bottle, for example, if the weight of 20 tablets needs to be measured, but the sample bottle contains more than 40 tablets, the tablets in the sample bottle can also be divided into two material boxes 21 to achieve two measurements of the same tablet.

[0066] S20. The transfer mechanism 5 of the tablet weight difference automatic measuring device picks up the material box 21 at the set position and places it on the weighing device 4 of the tablet weight difference automatic measuring device to obtain the total weight measurement value of all tablets in the material box 21 and calculate the average value of the tablets in the material box 21.

[0067] S30, the transfer mechanism 5 picks up the cassette 21 on the weighing device 4 and pours the tablets from the cassette 21 into the sorting mechanism 3 of the automatic tablet weight difference measuring device. The sorting mechanism 3 can separate and sort the tablets one by one. The transfer mechanism 5 can also pick up the tablets on the sorting mechanism 3 one by one and weigh them to obtain the weight measurement value of each tablet, and compare the deviation of the weight measurement value of each tablet with the average value of the tablets. After the tablets in the cassette 21 are measured, they are put back into the fixture 2 through the transfer mechanism 5, and the transfer mechanism 5 picks up the next cassette 21 to measure the next type of tablet.

[0068] This method is simple to operate, and the automated measurement process reduces human error, ensuring accurate weight measurement of each tablet. By calculating the average weight of the tablets and comparing it with the deviation of the individual tablet weights, the number of defective tablets can be effectively identified, improving the accuracy of quality control. The coordinated operation of the fixture 2, transfer mechanism 5, weigher 4, and sorting mechanism 3 greatly improves the efficiency of tablet inspection. Furthermore, by recording the weight of each tablet and its deviation from the average weight, detailed traceability data for drug quality can be provided. The use of multiple feed boxes 21 also enables continuous batch inspection of different tablets, shortening the batch measurement cycle.

[0069] Furthermore, a counter 61 is provided and is placed on a transfer platform between the sorting mechanism 3 and the weighing device 4;

[0070] Step S20 includes the following specific steps:

[0071] S201, the transfer mechanism 5 will grab the material box 21 at the set position and pour the tablets in the material box 21 into the sorting mechanism 3, and the sorting mechanism 3 will sort the tablets one by one.

[0072] S202, the transfer mechanism 5 places the empty material box 21 on the weighing device 4, the weighing device 4 weighs the material box 21 and uses the weight of the material box 21 as the standard to zero the data.

[0073] S203, the transfer mechanism 5 places the material box 21 on the weighing device 4 onto the transfer platform. The transfer mechanism 5 picks up the tablets from the sorting mechanism 3 one by one and puts them into the material box 21 on the transfer platform until the counter 61 counts 20 tablets. The transfer mechanism 5 then discards the remaining tablets in the sorting mechanism 3. It should be noted that when the counter 61 counts less than 20 tablets and there are no remaining tablets in the sorting mechanism 3 for continued measurement, the automatic tablet weight difference measuring device pauses and issues an alarm to remind the operator to replenish the material for that type of tablet or to re-measure that type of tablet.

[0074] S204. The transfer mechanism 5 picks up the material box 21 on the transfer platform and places it on the weighing device 4 to obtain the total weight measurement value of the 20 tablets in the material box 21, and calculates the average value of the tablets in the material box 21.

[0075] This method is simple to operate and can accurately measure and remove the weight of the measured material box 21 to obtain the net weight of the tablets, ensuring consistency and accuracy in each sorting and measurement, thereby improving the reliability of drug packaging.

[0076] Furthermore, step S30 includes the following specific steps:

[0077] S301, the transfer mechanism 5 grabs the material box 21 on the weighing device 4 to pour 20 tablets into the sorting mechanism 3 and place them on the transfer platform. The sorting mechanism 3 sorts the 20 tablets one by one.

[0078] S302, after the transfer mechanism 5 picks up the first tablet from the sorting mechanism 3 adjacent to the transfer table and places it into the material box 21 of the transfer table, the counter 61 counts to one. The transfer mechanism 5 then picks up the material box 21 and the tablets inside the material box 21 from the transfer table and places them into the weighing device 4 to weigh the tablets. This obtains the weight measurement value of the first tablet, and the weight measurement value of the first tablet is compared with the average value of the tablets. The weighing device 4 uses the weight measurement value of the first tablet as the standard to zero out the data. It should be noted that since the weighing device 4 has already tare and zeroed out the weight of the material box 21 in supplementary S202, the data read by the weighing device 4 at this time is directly the weight of the first tablet, not the total weight of the material box 21 and the first tablet.

[0079] S302, the transfer mechanism 5 picks up the material box 21 on the weighing device 4 and places it on the transfer platform. The transfer mechanism 5 then picks up the second tablet from the sorting mechanism 3 that is adjacent to the transfer platform and places it on the material box 21 of the transfer platform. After that, the counter 61 counts to two. The transfer mechanism 5 picks up the material box 21 and the tablet in the material box 21 on the transfer platform and places it on the weighing device 4 to weigh the tablet to obtain the weight measurement value of the second tablet. The weight measurement value of the second tablet is compared with the average value of the tablets. The weighing device 4 uses the weight measurement value of the second tablet as the standard to clear the data. This process is repeated to achieve the weight difference comparison of 20 tablets.

[0080] By introducing the counter 61 in coordination with the sorting mechanism 3 and the transfer station, more precise and accurate tablet weight measurement and quality control are achieved. This ensures that only 20 tablets are included in the total weight measurement of this tablet category, unifies the measurement quantity standard, and the weighing device 4 is zeroed before each tablet is measured to ensure accurate measurement. This avoids data errors caused by tablet stacking and effectively improves measurement accuracy.

[0081] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An automatic tablet weight variation measuring device, characterized in that, The device includes a machine base equipped with a fixture, a sorting mechanism, a weighing device, and a transfer mechanism. Multiple containers for holding tablets are detachably connected to the fixture. The transfer mechanism is movably mounted on the machine base and can grasp and transfer the containers and tablets. The sorting mechanism and the weighing device are located on one side of the fixture. The sorting mechanism is used to separate and sort the multiple tablets in each container one by one, and the weighing device can weigh the tablets.

2. The automatic tablet weight variation measuring device according to claim 1, characterized in that, It also includes a counting component, wherein the sorting mechanism, the counting component and the weighing device are arranged sequentially at intervals along a first direction, and the counting component includes a counter, which is used to count the tablets moved from the sorting mechanism to the weighing device by the transfer mechanism.

3. The automatic tablet weight difference measuring device according to claim 2, characterized in that, It also includes a waste component, which includes a waste bin and a waste hopper. The waste bin is provided inside the machine, and the waste hopper is provided on the machine for collecting the tablets that exceed the quantity requirement. The waste hopper and the sorting mechanism are spaced apart along a second direction. The discharge end of the waste hopper is connected to the waste bin. The transfer mechanism can move the tablets that exceed the quantity requirement to the waste hopper. The first direction and the second direction are set at an angle.

4. The automatic tablet weight difference measuring device according to claim 3, characterized in that, The counting component further includes a first driving member, a mounting base, and a waste container. The first driving member is disposed on the machine base, and the driving end of the driving member is provided with the mounting base. The mounting base is provided with a first placement slot and a second placement slot at intervals along the second direction. The second placement slot is disposed adjacent to the waste hopper. The material box can be placed in the first placement slot, and the waste container can be placed in the second placement slot. The counter is disposed at intervals above the mounting base. The first driving member can drive the mounting base to move along the second direction, so that the material box or the waste container is located below the counter. The transfer mechanism can pick up the tablets in the sorting mechanism one by one and put them into the material box in the first placement slot, or the transfer mechanism can pick up the tablets in the sorting mechanism that exceed the quantity requirement and put them into the waste container in the second placement slot. The transfer mechanism can also pick up the waste container and pour the tablets in the waste container into the waste hopper.

5. The automatic tablet weight difference measuring device according to claim 4, characterized in that, The transfer mechanism includes a transfer component and a flipping component. The transfer component includes a first support, a second drive member, a third drive member, a fourth drive member, a first gripper, and a suction nozzle. The first support is disposed on the machine base. The second drive member is disposed on the first support. The third drive member is disposed at the drive end of the second drive member and can drive the third drive member to move along the first direction. The fourth drive member is disposed at the drive end of the third drive member and can drive the fourth drive member to move along the second direction. The first gripper and the suction nozzle are both disposed at the drive end of the fourth drive member and can drive the first gripper and the suction nozzle to move along a third direction. The first gripper is used to grip or release the material box, and the suction nozzle is used to suck up or release the tablets. The first direction and the second direction are respectively set at an angle to the third direction. The flipping assembly includes a second support and a first flipping mechanism, a second gripper, a second flipping mechanism, and a third gripper. The second support is disposed on the machine platform. The first flipping mechanism and the second flipping mechanism are both disposed on the second support, with the first flipping mechanism located above the sorting mechanism and the second flipping mechanism located above the waste hopper. The second gripper is disposed on the drive end of the first flipping mechanism and can grip the material box and be flipped by the first flipping mechanism to pour the tablets in the material box into the sorting mechanism. The third gripper is disposed on the drive end of the second flipping mechanism and can grip the waste box and be flipped by the second flipping mechanism to pour the tablets in the waste box into the waste hopper.

6. The automatic tablet weight variation measuring device according to any one of claims 1-5, characterized in that, It also includes a machine cover and a feeding assembly. The sorting mechanism, the weighing device and the transfer mechanism are all disposed inside the machine cover. The feeding assembly includes a conveyor and the fixtures. The conveyor is disposed on the machine platform and located inside the machine cover. A portion of the conveyor extends outside the machine cover. At least two fixtures are spaced apart on the conveyor. The conveyor is used for switching between the fixtures inside and outside the machine cover.

7. The automatic tablet weight variation measuring device according to any one of claims 1-5, characterized in that, It also includes a barcode scanner and an industrial control computer. The barcode scanner is used to identify the information of the sample vial of the tablets placed in front of the material box and record it into the industrial control computer.

8. An automatic method for measuring tablet weight variation, characterized in that, The automatic tablet weight variation measuring device according to any one of claims 1-7 includes the following steps: S10. Pour the tablets from the multiple sample vials into the multiple material boxes of the fixture of the automatic tablet weight difference measuring device. S20. The transfer mechanism of the automatic tablet weight difference measuring device picks up the material box at a set position and places it on the weighing device of the automatic tablet weight difference measuring device to obtain the total weight measurement value of all the tablets in the material box, and calculates the average value of the tablets in the material box. S30. The transfer mechanism picks up the material box on the weighing device and pours the tablets in the material box into the sorting mechanism of the tablet weight difference automatic measuring device. The sorting mechanism can separate and sort the tablets one by one. The transfer mechanism picks up the tablets on the sorting mechanism one by one and weighs them to obtain the weight measurement value of each tablet. The weight measurement value of each tablet is compared with the average value of the tablets.

9. The automatic method for measuring tablet weight variation according to claim 8, characterized in that, A counter is provided and the counter is placed on a transfer platform between the sorting mechanism and the weighing device; Step S20 includes the following specific steps: S201, the transfer mechanism picks up the material box and pours the tablets in the material box into the sorting mechanism, and the sorting mechanism separates and sorts the tablets one by one; S202, The transfer mechanism places the empty material box on the weighing device, and the weighing device weighs the material box and uses the weight of the material box as the standard to zero the data; S203. The transfer mechanism places the material box on the weighing device onto the transfer platform. The transfer mechanism picks up the tablets on the sorting mechanism one by one and puts them into the material box on the transfer platform until the counter counts 20 tablets. The transfer mechanism then discards the remaining tablets in the sorting mechanism. S204. The transfer mechanism picks up the material box on the transfer platform and places it on the weighing device to obtain the total weight measurement value of the 20 tablets in the material box, and calculates the average value of the tablets in the material box.

10. The automatic method for measuring tablet weight variation according to claim 9, characterized in that, Step S30 includes the following specific steps: S301, The transfer mechanism grabs the material box on the weigher to pour 20 tablets into the sorting mechanism and then places them on the transfer platform. The sorting mechanism separates and sorts the 20 tablets one by one. S302. After the transfer mechanism picks up the first tablet adjacent to the transfer table from the sorting mechanism and places it into the material box of the transfer table, the counter counts to one. The transfer mechanism picks up the material box and the tablets in the material box on the transfer table and places them into the weighing device to weigh the tablets, obtains the weight measurement value of the first tablet, and compares the deviation between the weight measurement value of the first tablet and the average value of the tablets. The weighing device uses the weight measurement value of the first tablet as the standard to clear the data to zero. S302. The transfer mechanism picks up the material box from the weighing device and places it on the transfer platform. The transfer mechanism then picks up the second tablet from the sorting mechanism adjacent to the transfer platform and places it on the material box of the transfer platform. After that, the counter counts to two. The transfer mechanism picks up the material box and the tablet in the material box on the transfer platform and places them on the weighing device to weigh the tablets to obtain the weight measurement value of the second tablet. The weight measurement value of the second tablet is compared with the average value of the tablets. The weighing device uses the weight measurement value of the second tablet as the standard to clear the data. This process is repeated to achieve the weight difference comparison of 20 tablets.

Images