Linear tablet detector

Abstract

A linear tablet detector comprises a control cabinet, a machine base, a feeding device, a material moving device and an extruding device, the feeding device, the material moving device and the extruding device are installed on the machine base, the feeding device comprises a feeding groove and a queuing groove, the feeding groove is connected with a first linear vibrator, and the queuing groove is connected with a second linear vibrator. The extrusion device comprises a linear driving device, a pressing head driven by the linear driving device, a pressing seat connected with a force sensor and an extrusion platform located below the front portion of the pressing seat, the force sensor is connected with the machine base, an independently-arranged material preparation platform is further arranged below the front portion of an outlet of the queuing groove, the outlet of the queuing groove is higher than the material preparation platform, and the material preparation platform and the extrusion platform are both horizontally arranged. The extruding platform is not higher than the material preparing platform, the material moving device is composed of a linear driving device and a moving rod driven by the linear driving device, the moving rod right faces the connecting line of the extruding platform and the material preparing platform, the moving direction of the moving rod is approximately parallel to the connecting line of the extruding platform and the material preparing platform, and the extruding platform is connected with a fourth linear vibrator.

Description

Technical Field

[0001] This utility model relates to a linear tablet testing instrument in the pharmaceutical and health product fields, and in particular a multifunctional tablet testing instrument. Background Technology

[0002] Many pharmaceutical and health product manufacturing standards stipulate that tablet production must be carried out on-site for random sampling inspections of indicators such as tablet hardness, weight, and thickness. Currently, while there are many automated tablet weight testing devices, hardness testing mostly involves manual feeding, squeezing the tablets using a simple press, and then manually removing the fragments. Thickness testing is mostly done manually with calipers. These processes are labor-intensive and the quality of testing is uncontrollable. Existing technology offers very few automated devices that can comprehensively test weight, hardness, and thickness. Most are complex in structure and cumbersome in operation; their material handling mechanisms are complex; their fragment removal mechanisms after tablet crushing are complex; and they often fail to discharge material once the total number of tests is reached. Utility Model Content

[0003] This invention addresses the shortcomings of existing technologies by proposing a linear tablet detector.

[0004] The technical measures adopted by this utility model are as follows: a linear tablet detector, which includes a control cabinet, a base, and a feeding device, a transferring device, and an extrusion device installed on the base. The feeding device includes a feeding trough and a queuing trough. The feeding trough is connected to a first linear vibrator, and the queuing trough is connected to a second linear vibrator. The extrusion device includes a linear drive device and its driven pressure head, a pressure seat connected to a force sensor, and an extrusion platform located in front of and below the pressure seat. The force sensor is connected to the base. There is also an independently set material preparation platform in front of and below the outlet of the queuing trough. The outlet of the queuing trough is higher than the material preparation platform. The material preparation platform and the extrusion platform are both arranged horizontally. The extrusion platform is not higher than the material preparation platform. The transferring device consists of a linear drive device and its driven displacement rod. The displacement rod is directly opposite the line connecting the extrusion platform and the material preparation platform. The moving direction of the displacement rod is approximately parallel to the line connecting the extrusion platform and the material preparation platform. The extrusion platform is connected to a fourth linear vibrator.

[0005] The specific features of this solution also include a material guide box, which includes a guide chute. The guide chute is a guide groove pointing towards the material preparation platform and is connected to the bottom of the queuing chute outlet.

[0006] The feed box is fixed to the end of the shift rod. When the shift rod is in the waiting position for feeding, the feed chute connects to the bottom of the queuing trough.

[0007] The machine base also has a linear thickness gauge fixed to the machine base. Its test head is a linearly moving thickness gauge push rod. One end of the thickness gauge push rod is fixed to the thickness plate, and the other end of the thickness gauge push rod is supported in a non-fixed manner by a vertically movable device. The thickness plate is facing the material preparation platform. The movement direction of the thickness gauge push rod is perpendicular to the material preparation platform, and the thickness plate is perpendicular to the thickness gauge push rod.

[0008] The thickness gauge can be placed directly above the material preparation platform. The lower end of the thickness gauge's top rod is fixed to the thickness measuring plate, while the upper end of the thickness gauge's top rod is supported in a non-fixed manner by a vertically movable device.

[0009] The end of the shift rod connects to the shift head, and the end of the shift head that contacts the tablet is designed in a shape similar to a knife handle.

[0010] The surface of the extrusion platform also has grooves parallel to the direction of the extruder head's movement.

[0011] The feed box also includes a reverse slide, which is a guide channel pointing in the opposite direction to the feed platform. When the total number of tablets detected reaches the set quantity, the reverse slide is located below the outlet of the queuing channel.

[0012] There is at least one test platform between the material preparation platform and the extrusion platform, and the stroke of the shift rod spans across the material preparation platform, the test platform, and the extrusion platform.

[0013] One of the test platforms is the second test platform. The second test platform does not contact the other platforms and is connected to the load-bearing end of the load cell fixed on the base. The load cell is connected to the control cabinet.

[0014] The beneficial effects of this solution are: 1. An independently set material preparation platform is located below and before the queuing trough outlet. This platform can perform thickness, hardness, and weight tests. The queuing trough is connected to the second linear vibrator, and its outlet is higher than the material preparation platform, allowing tablets to be smoothly transported to it. The extrusion platform is connected to the fourth linear vibrator, automatically conveying the crushed tablets. The structure is simple and economical. 2. A forward feeding box is included, which features a guide groove pointing towards the material preparation platform, called a forward slide. This slide connects to the bottom of the queuing trough outlet, making the tablets' posture more controllable as they move from the queuing trough onto the material preparation platform. The forward feeding box also includes a reverse slide, which is a guide groove pointing in the opposite direction to the material preparation platform. When the required quantity for testing is reached, the tablets can be quickly discharged, saving tablet costs and testing time. 3. The knife handle design of the transfer head facilitates the consistency of all material movement trajectories, making testing more controllable. 4. The groove design and vibration adjustment of the pressure head enable the length-direction extrusion testing of long strip tablets. 5. Using a linear thickness gauge, the tablet thickness is measured twice with its non-fixed top rod, a simple and economical method. 6. The weighing platform is designed between the material preparation platform and the extrusion platform, allowing multiple platforms to work simultaneously for higher efficiency. 7. A feed box is also fixed to the end of the shifting head. The feed box consists of guide grooves in both the front and rear directions to collect excess test tablets, saving costs. 8. A single device completes tests for thickness, weight, hardness, and other indicators; its structure is streamlined, simple, and lightweight. Attached Figure Description

[0015] Figure 1 This is a front upper right corner view of the present invention.

[0016] Figure 2 for Figure 1 The top left view after the view.

[0017] Figure 3 for Figure 1 A diagram showing the setup after adding the test platform.

[0018] Figure 4 for Figure 3 The top right view after the view.

[0019] Figure 5 yes Figure 1 A schematic diagram showing the tablets after being added to the thickness tester.

[0020] In the diagram, 1-feeding trough, 2-queue trough, 4-thickness measuring plate, 6-cantilever, 7-thickness gauge top rod, 8-counterweight, 9-shifting slider, 12-tablet, 15-force sensor, 16-fourth linear vibrator, 20-extrusion platform, 22-pressing head, 23-extrusion guide rail, 25-extrusion slider, 26-second linear vibrator, 27-first linear vibrator, 29-base, 31-extrusion connector, 32-pressing seat, 33-extension block, 34-third photoelectric sensor, 35-shifting light shield, 40-extrusion connector, 42-shifting motor, 51-material preparation platform, 56-shifting rod, 57-fourth photoelectric sensor, 58-shifting head, 60-forward material box, 61-reverse slide rail, 62-forward slide rail, 65-testing platform, 66-coupling. Detailed Implementation

[0021] Example 1: A linear tablet detector, see Figure 1-2 It includes a control cabinet, a base 29, and a feeding device, a transferring device, and an extrusion device mounted on the base 29. The feeding device includes a feeding trough 1 and a queuing trough 2. The feeding trough 1 is connected to a first linear vibrator 27, and the queuing trough 2 is connected to a second linear vibrator 26. The extrusion device includes a linear drive device and its driven pressure head 22, a pressure seat 32 connected to a force sensor 15, and an extrusion platform 20 located in front of and below the pressure seat 32. The force sensor 15 is connected to the base 29. There is also an independently set material preparation platform 51 in front of and below the outlet of the queuing trough 2. The outlet of the queuing trough 2 is higher than the material preparation platform 51. The material preparation platform 51 and the extrusion platform 20 are both arranged horizontally. The extrusion platform 20 is not higher than the material preparation platform 51. The transferring device consists of a linear drive device and its driven displacement rod 56. The displacement rod 56 is directly opposite the line connecting the extrusion platform 20 and the material preparation platform 51. The moving direction of the displacement rod 56 is approximately parallel to the line connecting the extrusion platform 20 and the material preparation platform 51. The extrusion platform 20 is connected to a fourth linear vibrator 16.

[0022] The linear drive device of the extrusion unit includes an extrusion guide rail 23 rigidly connected to the base 29, an extrusion slider 25 driven by a screw and sliding on the extrusion guide rail 23, and an extension block 33 connected to the extrusion slider 25. The pressure head 22 is installed at the end of the extension block 33, which can be easily disassembled and cleaned. The screw is connected to the drive motor through a coupling 66 or a gear belt.

[0023] The extrusion platform 20 is connected to the fourth linear vibrator 16 via the fourth vibrator connector 41. The pressure seat 32 is connected to the force sensor 15 via the extrusion connector 31. The force sensor 15 is connected to the machine base 29 via the extrusion connector 40. The pressure seat 32, the extrusion connector 31, and the force sensor 15 are connected together in a cantilevered manner and face the pressure head 22.

[0024] The linear drive device of the shifting device includes a shifting motor 42, a shifting guide rail, a shifting slider 9, and a shifting light-blocking plate 35 connected to the shifting slider 9. It also includes a third photoelectric sensor 34 and a fourth photoelectric sensor 57 fixed to the base 29. The shifting rod 56 is connected to the shifting slider 9. For easy disassembly and cleaning, the end of the shifting rod 56 is connected to the shifting head 58. The shifting slider 9 is connected to the shifting light-blocking plate 35. The light-blocking signals of the third photoelectric sensor 34 and the fourth photoelectric sensor 57 when they are passed through the shifting light-blocking plate 35 can be used to determine the position of the shifting head 58, thereby determining the position of the tablet being tested.

[0025] It also includes a feed box 60, which includes a guide groove pointing towards the material preparation platform, called a feed chute 62, which is connected to the lower part of the queuing chute 2 outlet. The feed box 60 is fixed to the end of the shifting head 58, and when the shifting rod is in the waiting position for loading, the feed chute 62 is connected to the lower part of the queuing chute 2 outlet.

[0026] See Figure 1-4 The tablets stored in the feeding trough 1 are slowly output to the queuing trough 2. The queuing trough 2 arranges the tablets in a queue and outputs them one by one through the smoothing channel 62 in a stable posture, avoiding the tablets 12 from standing sideways on the preparation platform 51. When a tablet slides onto the preparation platform 51 in a flat posture, the feeding trough 1 and the queuing trough 2 stop vibrating. At this time, the tablet can be directly tested on the preparation platform 51, or the shifting head 58 can move the tablet to the subsequent test positions.

[0027] When the tablets reach the extrusion platform 20, the control cabinet controls the pressure head 22 to move linearly and extend, extruding the tablets directly in front of the pressure seat 32. After the tablets are broken, the pressure head 22 retracts. At the same time, the fourth linear vibrator 16 drives the extrusion platform 20 to vibrate, conveying the broken tablets in the direction of the retraction of the pressure head 22 to the crushing bin located on the lower side of the end of the extrusion platform 20.

[0028] Example 2: A linear tablet detector, similar to Example 1, will not be repeated here. See [link to example]. Figure 1-4 The difference is that the end of the shifting head 58 that contacts the tablet is designed to resemble a knife handle, which can intercept the tablet 12 vibrating from the preparation platform 51, and also keep the knife handle from contacting the tablet 12 when the knife handle retracts.

[0029] The surface of the extrusion platform 20 also has grooves parallel to the running direction of the pressure head 22. The cross-sectional shape of the pressure head 22 is also adapted to the cross-sectional shape of the extrusion platform 20 so that the surfaces of the two can move relative to each other in close contact. When encountering a long strip tablet, the transfer head 58 moves the long strip tablet to the groove. The fourth linear vibrator 16 vibrates to make the long strip tablet lie parallel in the groove along its length direction. Finally, the pressure head 22 extrudes the tablet 12 along the length direction of the tablet.

[0030] Example 3: A linear tablet detector, similar to Example 1, will not be repeated here. See [link to example]. Figure 1-4 The difference lies in that the feed box 60 also includes a reverse slide 61 pointing in the opposite direction to the preparation platform 51. The feed slide 62 is adjacent to and connected to the reverse slide 61. When the shift head 58 is in the waiting position, the feed slide 62 is connected to the bottom of the queuing trough 2, and the tablets from the queuing trough 2 slide along the feed slide 62 onto the preparation platform 51. When the total number of tablets that have been tested reaches the set number and no further testing is needed, in order to save tablets, the shift head 58 can be placed in the inspection-free discharge station, that is, the reverse slide 61 can be placed below the outlet of the queuing trough 2. All materials from the queuing trough 2 are discharged through the reverse slide 61 in the opposite direction to the preparation platform 51, and no longer pass through the various testing platforms.

[0031] Example 4: A linear tablet detector, similar to Example 1, will not be repeated here. See [link to example]. Figure 5 The difference lies in that the base 29 also has a linear thickness gauge fixed to the base 29. Its test head is a linearly moving thickness gauge rod 7. One end of the thickness gauge rod 7 is fixed to the thickness plate 4, and the other end of the thickness gauge rod 7 is lifted in a non-fixed manner by a vertically movable device. The thickness plate 4 is facing the material preparation platform 51. The moving direction of the thickness gauge rod 7 is perpendicular to the material preparation platform 51. The thickness plate 4 is perpendicular to the thickness gauge rod 7. Before testing the thickness of the tablet 12, the vertically movable device is first lowered to allow the thickness plate 4 to touch the material preparation platform 51 to find the zero point of the thickness test. Then, the tablet 12 enters the material preparation platform 51, and the vertically movable device is lowered again to allow the thickness plate to touch the tablet 12. The difference between the two readings of the thickness gauge is the thickness of the tablet 12. The thickness gauge is fixed next to the material preparation platform 51. The thickness plate 4 is fixed to the thickness gauge top rod 7 by the cantilever 6. In order to prevent the eccentric weight of the thickness plate 4 relative to the thickness gauge top rod 7 from affecting the mechanical fit accuracy and position repeatability of the thickness gauge top rod 7 when it moves up and down, a counterweight 8 is added to the other end of the cantilever.

[0032] Example 5: A linear tablet detector, which is the same as Example 4 and will not be repeated here. The difference is that the thickness gauge can be placed directly above the material preparation platform 51. The lower end of the thickness gauge top rod 7 is fixed to the thickness measuring plate 4. The upper end of the thickness gauge top rod 7 is supported in a non-fixed manner by a vertically movable device. The thickness gauge top rod 7 moves downward to test the position of the material preparation platform 51 and the tablet 12 respectively, and the thickness of the tablet 12 is obtained.

[0033] Example 6: A linear tablet detector, similar to Example 1, will not be repeated here. See [link to example]. Figure 3-5 The difference is that there is at least one test platform 65 between the material preparation platform 51 and the extrusion platform 20, and the stroke of the shift rod 56 spans the material preparation platform 51, the test platform 65, and the extrusion platform 20.

[0034] Example 7: A linear tablet detector, similar to Example 6, will not be repeated here. See Example 6. Figure 3-5 The difference is that one of the test platforms 65 is the second test platform 18. The second test platform 18 does not contact the other platforms. It is connected to the bearing end of the weighing sensor fixed on the base 29 through a weighing transition block. The weighing sensor is connected to the control cabinet to realize the weight test of the tablet.

Claims

1. A linear tablet detector, comprising a control cabinet, a base, and a feeding device, a transferring device, and a pressing device mounted on the base. The feeding device includes a feeding trough and a queuing trough, the feeding trough being connected to a first linear vibrator and the queuing trough being connected to a second linear vibrator. The pressing device includes a linear drive device and a pressure head driven by it, a pressure seat connected to a force sensor, and a pressing platform located in front of and below the pressure seat. The force sensor is connected to the base. The device is characterized in that: Below the queuing trough outlet, there is an independently set material preparation platform. The queuing trough outlet is higher than the material preparation platform. Both the material preparation platform and the extrusion platform are arranged horizontally. The extrusion platform is not higher than the material preparation platform. The material transfer device consists of a linear drive device and its driven displacement rod. The displacement rod is directly opposite the line connecting the extrusion platform and the material preparation platform. The moving direction of the displacement rod is approximately parallel to the line connecting the extrusion platform and the material preparation platform. The extrusion platform is connected to the fourth linear vibrator.

2. The linear tablet detector according to claim 1, characterized in that It also includes a material chute, which includes a guide chute. The guide chute is a guide groove pointing towards the material preparation platform and is connected to the bottom of the queuing chute outlet.

3. A linear tablet detector according to claim 2, characterized in that The feed box is fixed to the end of the shift rod. When the shift rod is in the waiting position for feeding, the feed chute connects to the bottom of the queuing trough.

4. The linear tablet detector according to claim 1, wherein, The machine base also has a linear thickness gauge fixed to the machine base. Its test head is a linearly moving thickness gauge rod. One end of the thickness gauge rod is fixed to the thickness plate, and the other end of the thickness gauge rod is supported in a non-fixed manner by a vertically movable device. The thickness plate is facing the material preparation platform. The movement direction of the thickness gauge rod is perpendicular to the material preparation platform, and the thickness plate is perpendicular to the thickness gauge rod.

5. A linear tablet detector according to claim 4, characterized in that The thickness gauge can be placed directly above the material preparation platform. The lower end of the thickness gauge's top rod is fixed to the thickness measuring plate, while the upper end of the thickness gauge's top rod is supported in a non-fixed manner by a vertically movable device.

6. The linear tablet detector according to claim 1, wherein, The end of the shift rod connects to the shift head, and the end of the shift head that contacts the tablet is designed in a shape similar to a knife handle.

7. The linear tablet detector according to claim 1, wherein, The surface of the extrusion platform also has grooves parallel to the direction of the extruder head's movement.

8. The linear tablet detector according to claim 3, wherein, The feed box also includes a reverse slide, which is a guide channel pointing in the opposite direction to the feed platform. When the total number of tablets detected reaches the set quantity, the reverse slide is located below the outlet of the queuing channel.

9. The linear tablet detector according to claim 1, wherein, There is at least one test platform between the material preparation platform and the extrusion platform, and the stroke of the shift rod spans across the material preparation platform, the test platform, and the extrusion platform.

10. A linear tablet detector according to claim 9, characterized in that One of them The test platform is a second test platform. The second test platform does not contact other platforms and is connected to the load-bearing end of the weighing sensor fixed on the base. The weighing sensor is connected to the control cabinet.

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