Tablet detector

Abstract

A tablet detector comprises a rack, a linear driving device, a pressure head, a pressure sensor and a controller, the linear driving device drives the pressure head to move linearly, the tablet detector further comprises a vibration conveyor, the vibration conveyor comprises a linear groove body with the inner surface in a prism shape and a linear vibration exciter, the linear groove body is connected with the linear vibration exciter, and the linear vibration exciter is connected with the pressure sensor. The ridge line direction of the linear groove body is parallel to the excitation feeding direction of the linear vibration exciter, the linear driving device, the pressing head, the linear groove body and the pressure sensor are linearly arranged in sequence from left to right, and the back-and-forth driving direction of the linear driving device, the material moving direction of the linear groove body and the stress direction of the pressure sensor are parallel to one another. The linear driving device, the linear vibration exciter and the pressure sensor are all rigidly connected with the rack, and the linear driving device, the linear vibration exciter and the pressure sensor are all electrically connected with the controller.

Description

Technical Field

[0001] The utility model relates to the field of tablet detection, in particular to a tablet detector for detecting tablet hardness and weight in tablet production. Background Art

[0002] When producing tablets, the pharmaceutical industry needs to sample and test the tablets for hardness, weight, diameter, thickness and other indicators in real time. At present, most of the tablets are weighed on a scale manually or automatically, and then moved to a workbench of a horizontal press to make it lie flat. The workbench consists of a horizontal platform and a pressure sensor. The pressure sensor is connected to the frame. The horizontally arranged pressure rod moves the pressure head horizontally to press the tablet. The tablet is between the pressure head and the pressure sensor. The controller determines the maximum force value when the tablet collapses or breaks according to the signal felt by the pressure sensor, thereby giving the tablet hardness value. At the same time, the debris and powder on the platform are either removed manually or the platform is designed as a double-open trap gate. The platform is part of the inner wall of the gate. The gate is started to make the debris and powder fall, and then the trap gate is closed to restore part of its inner wall to the flat state of the platform.

[0003] In the above methods, it is too troublesome to remove the debris and powder manually; the trap gate is more convenient to remove, but it is easy to make mistakes when adjusting the tablet posture by shaking the gate up and down, closing and opening the gate multiple times on the gate platform, either making the round tablet stand up to meet the extrusion of the indenter in the thickness direction, or making the long strip tablet meet the indenter in the short side direction, resulting in failure of the hardness test.

[0004] Therefore, the market is in urgent need of a hardness tester that can significantly reduce the probability of round tablets being tested in a thickness state or long tablets being tested in a short side, and can also facilitate the removal of debris and powder. There is an even greater need for a tablet tester that can perform hardness and weight testing in a single machine, with the aforementioned features of accurate tablet posture management and convenient debris removal. Utility Model Content

[0005] The utility model provides a tablet detector in view of the deficiencies in the prior art.

[0006] A tablet detector comprises a frame, a linear drive device, a pressure head, a pressure sensor and a controller. The linear drive device drives the pressure head to move linearly. The tablet detector also comprises a vibrating conveyor. The vibrating conveyor comprises a linear trough body with a prism-shaped inner surface and a linear vibrator. The linear trough body is connected to the linear vibrator. The ridge direction of the linear trough body is parallel to the vibration feeding direction of the linear vibrator. The linear drive device, the pressure head, the linear trough body and the pressure sensor are arranged linearly from left to right. The back and forth driving direction of the linear drive device, the material moving direction of the linear trough body and the force direction of the pressure sensor are parallel to each other. The linear drive device, the linear vibrator and the pressure sensor are all rigidly connected to the frame. The linear drive device, the linear vibrator and the pressure sensor are all electrically connected to the controller.

[0007] The specific feature of this solution is that the pressure sensor is rigidly connected to the frame through a cantilever member.

[0008] The cross-sectional shape of the pressing head perpendicular to its moving direction is consistent with and slightly smaller than the cross-sectional shape of the linear trough body perpendicular to its opening direction. The pressing head can move in the cavity of the linear trough body along the opening direction of the linear trough body without contacting each other, which is convenient for extruding tablets of various shapes and small sizes.

[0009] The cross section of the linear trough body perpendicular to its opening direction is V-shaped, and the angle of the V-shaped cross section is ≥90°. The length of the linear trough body is greater than the maximum size of the tablet. The angle of the V-shaped cross section is ≥90°. Tablets of special shapes such as long strips are difficult to stand upright on one side of the V-shaped groove, and are not easy to be clamped by the V-shaped groove or have increased movement resistance. They can all be adjusted through long-distance vibration transportation, so that the long strip tablets can finally lie on one side of the V-shaped groove or be placed in the middle of the V-shaped groove in accordance with the tablet hardness test standards specified in the pharmacopoeia, and make their length direction consistent with the opening direction of the linear trough body, and meet the pressure head with one end of the length direction of the long strip tablet. Finally, the pressure head moves the long strip tablet so that the other end of its length direction contacts the pressure sensor until the tablet is crushed, realizing automated unmanned material handling and crushing. Round tablets are more difficult to move upright during long-distance vibratory conveying, and ultimately they lie on one side of the V-shaped linear trough or are mounted in the middle of the V-shaped groove to meet the pressing head in the direction of the round edge diameter rather than in the direction of thickness.

[0010] The material movement direction of the linear trough is toward the linear drive device. When the pressure head has not yet extended from left to right, the distance between its extruded working surface and the left end surface of the linear trough is greater than the maximum size of the tablet, that is, greater than the diameter of the largest tested circular tablet or the major axis size of the long tablet, so as to facilitate the crushed tablet fragments of various sizes to fall between the pressure head and the linear trough.

[0011] When the pressing head extends to the stroke limit, the distance between it and the pressure sensor is smaller than the maximum size of the tablet, so as to ensure that the pressing head can realize the compression of tablets of various sizes together with the pressure sensor at a fixed position.

[0012] There is also a pressure seat on the side of the pressure sensor facing the pressure head. The strength of the pressure seat is greater than the range of the tablet tester and less than the range of the pressure sensor. It is used to protect the pressure sensor. When the pressure head is extended to the limit of the stroke, the distance between the pressure head and the pressure seat is less than the maximum size of the tablet. The pressure seat can be made of elastic material to reduce the slope of the instantaneous pressure-time curve when the tablet is crushed, and make the instantaneous time of tablet crushing longer, so that the controller can more easily obtain an accurate tablet hardness value.

[0013] The linear drive device is a linear motor, the pressure sensor is a cylindrical pressure sensor, and the linear drive shaft of the linear motor is coaxial with the cylindrical shaft of the cylindrical pressure sensor.

[0014] In order to ensure the sensing and control of the position of the pressure head, a position sensor is set at the left and right ends of the pressure head stroke, which are the first position sensor and the second position sensor, respectively, and they are electrically connected to the controller. The position sensor can be a photoelectric tube, and a position trigger for triggering the photoelectric tube for light blocking is set. The position trigger is fixedly connected to the pressure head and moves synchronously. It can be a strip-shaped thin plate that can pass through the C-shaped photoelectric tube. The position of the pressure head can be known through the two position sensors. The first position sensor is triggered, indicating that the pressure head is at the left end of the stroke, and the second position sensor is triggered, indicating that the pressure head is at the right end of the pressure head stroke.

[0015] It also includes a feeding chute facing the linear trough and located obliquely above the linear trough, with the outlet of the feeding chute facing the linear trough vertically and located at the right end of the linear trough. The tablets to be tested can enter the right end of the linear trough as far as possible through the feeding chute, ensuring that there is enough distance for the long tablets to fall through the V groove and vibration conveyor of the linear trough, so that the length direction is parallel to the opening direction of the linear trough, so that the long tablets are finally squeezed at both ends of the long side.

[0016] The device also includes a weighing device, which includes a material sorting device, a material moving device, a weighing sensor and a weighing platform. The weighing platform is connected to the weighing sensor. The material sorting device and the weighing sensor are electrically connected to the control cabinet. The outlet of the weighing platform is directly opposite to the inlet of the feeding chute, so as to realize the connection between the weighing device and the tablet hardness testing device, so that a tablet is weighed first and then the hardness is tested, thereby reducing the number of tablet samples and the operating cost, and facilitating the establishment of a numerical correlation between the weight and hardness of the same tablet.

[0017] The weighing platform is a linear groove with a prism-shaped inner surface. The ridgeline direction of the linear groove is parallel to the ridgeline direction of the linear trough body. The outlet of the linear groove is directly opposite to the entrance of the feeding chute. The material moving device is a material moving block adapted to the inner surface of the linear groove and used to move tablets. The material moving block is rigidly connected to the pressure head through a material moving connector. The linkage of the material moving mechanism of weighing and hardness testing is realized, which is convenient for electrical logic control, eliminates the material moving mechanism of the weighing device, and realizes the miniaturization of weighing and hardness testing equipment.

[0018] When the material transfer block is located at the left edge of the feeding chute entrance, the pressure head is located on the left side of the feeding chute outlet. When the tablet slides from the feeding chute entrance to the linear trough body, the pressure head is located on the left side of the feeding chute outlet, which can prevent the tablet from jumping out of the linear trough body from the left outlet of the linear trough body, and at the same time make it start vibrating and sorting the material as soon as possible.

[0019] It also includes a material sorting device and a transition trough located at the bottom thereof, the transition trough is opposite to the weighing platform and is located at the material entrance of the weighing platform, a long groove is opened at the discharge end of the material sorting device, the width of the long groove is larger than the diameter of the round tablet or the short axis diameter of the long tablet and smaller than the long axis diameter of the long tablet, so as to facilitate the long tablet to fall with its long axis direction parallel to the trough direction of the weighing platform, the upper left side of the transition trough is connected to the discharge port of the material sorting device, the material sorting device is electrically connected to the control cabinet, and also includes a silo and a control gate.

[0020] When the pressure head is at the far left of the stroke, the material transfer block is located at the lower left end of the left end of the long slot at the outlet end of the material sorting device, ensuring that the tablets falling from the material sorting device are located on the right side of the material transfer block.

[0021] The tablets in the silo are sorted end to end in a row through the multi-stage sorting device. For tablets of different sizes and shapes, the gates are controlled at different heights to achieve different sorting speeds and control the detection speed of the tablets.

[0022] A first light curtain sensor and a second light curtain sensor are arranged under the end notch of the material sorting device to form a light curtain sensor, wherein one of the two light curtain sensors emits light and the other receives light.

[0023] The complete detection process is as follows: When the tablets fall from the long notch of the material handling device to the transition trough, the light curtain sensor is triggered because it senses that the light is blocked by the tablets. The material handling device stops vibrating to transport subsequent tablets. Then, the material transfer block moves the tablets on the transition trough to the weighing platform through the material transfer connector and is driven by the pressure head. Then it retreats a little and stops moving to avoid contact with the tablets and affecting the weighing results. Weighing then begins. After weighing, the material transfer block continues to move the tablet on the weighing platform to the right to the entrance of the feeding chute through the material transfer connector under the drive of the pressure head. The tablet slides from the feeding chute into the linear trough body, and the linear trough body vibrates and transports the tablet to the left. If it is a long tablet, it will fall down along the length direction and stick to one side of the linear trough body. At this time, the pressure head moves to the right until it seals the gap between it and the linear trough body. After a period of time, regardless of whether the tablet moves to the left end of the linear trough body, the linear trough body stops vibrating, and the pressure head starts to move to the right until it contacts the tablet and moves it to the right together, until the distance between the tablet and the pressure seat is less than the maximum size of the tablet, the tablet is crushed, and then the pressure head moves left to the leftmost end of the stroke, that is, the starting point, and the linear trough body starts to vibrate and vibrate the fragments and powder to the left, causing them to fall onto the receiving piece, and at the same time, the material sorting device starts to vibrate, and continues to transport the next tablet into the transition trough to start the next cycle. The receiving piece can be a receiving basket or a chute.

[0024] Since the number of samples taken for each inspection may be more than the specified inspection number, it also includes a discharge connection, a moving device, and an uninspected product bin. The discharge connection is rigidly connected to the transition trough and the moving device. The uninspected product bin is located directly below the transition trough. When the specified number of inspections is completed, the moving device moves or withdraws the transition trough from under the notch at the end of the material sorting device through the discharge connection. The excess uninspected tablets are continuously vibrated and conveyed by the material sorting device until they fall directly into the uninspected product bin from the notch of the long groove at the end of the material sorting device, so that the material bin and the material sorting device can quickly empty the uninspected products in order to meet the next batch of new products to be inspected.

[0025] The moving device can be a linear cylinder or a rotary motor, and the rotating shaft of the rotary motor is arranged perpendicular to the horizontal plane.

[0026] The beneficial effects of this solution are: 1. By setting a linear vibrator and a linear trough body with a prism-shaped inner surface, the linear trough body is used as a tablet hardness testing platform, the tablet to be tested is located on the linear trough body, and the pressure head is driven by a linear drive device to squeeze the tablet on the linear trough body facing the pressure sensor, thereby realizing the tablet hardness testing function; then, the fragments and powder of the crushed tablet are automatically moved out of the hardness testing platform (that is, the linear trough body) through the linear trough body driven by the vibration of the linear exciter, avoiding manual cleaning, which is very convenient for testing many special tablets or tablets that are harmful to the operator, and realizes automated unmanned continuous hardness testing.

[0027] 2. The cross section of the vibrating linear trough perpendicular to its opening direction is V-shaped, the angle of the V-shaped cross section is ≥90°, and the length of the linear trough is greater than the maximum tablet length or diameter, so that tablets of special shapes such as long strips can be arranged through vibration conveying, so that the tablets finally lie on one side of the V-trough and make their length direction consistent with the opening direction of the linear trough according to the tablet hardness test standards specified in the pharmacopoeia, and meet the pressure head in this state. The pressure head moves the tablet so that it contacts the pressure seat in the length direction until it is crushed, realizing automatic and unmanned material handling.

[0028] 3. Set up a feeding chute connected to a weighing device to detect the weight and hardness of a tablet in sequence, saving tablet sample costs and facilitating operation.

[0029] 4. The material transfer device in the weighing device is rigidly connected to the pressure head to achieve mechanical simplification and convenient electrical logic control of weight detection and hardness detection. It eliminates the need for a set of material transfer mechanisms in the weighing device. It makes the weight detection and motion detection mechanisms small, lightweight and intelligent.

[0030] 5. By connecting the transition trough to the mobile device, the uninspected tablets in the silo and the material sorting device can be quickly emptied after the specified number of tablets have been inspected, thus shortening the inspection time interval between batches of tablets. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a three-dimensional schematic diagram of the present invention, Figure 2 yes Figure 1 The enlarged view of the part II in the middle. Figure 3 A three-dimensional schematic diagram of another viewing angle of the present invention, Figure 4 for Figure 3 The enlarged view of the part in the middle. Figure 5 It is a front view of the present invention, Figure 6 for Figure 5 FF cross-section view, Figure 7 for Figure 1 A stereoscopic view from another angle, Figure 8 for Figure 7 The enlarged view of the part III in the middle, Fig. 9 for Figure 8 View of the center transition slot when it is retracted.

[0032] In the figure: 1-linear drive device, 2-pressure head, 3-linear trough, 4-linear vibrator, 5-pressure seat, 6-feeding chute, 7-weighing platform, 8-weighing sensor, 9-material moving block, 10-material sorting device, 11-transition trough, 12-pressure sensor, 13-material receiving part, 14-frame, 16-control panel, 17-cantilever part, 22-material moving connecting part, 30-material bin, 31-gate, 4.1-first position sensor, 4.2-second position sensor, 4.3-position trigger, 8.1-first light curtain sensor, 8.2-second light curtain sensor, 55-discharging connecting part, 56-moving device, 57-uninspected product bin. DETAILED DESCRIPTION

[0033] Example 1: Figure 1-6 As shown, a tablet detector includes a frame 14, a linear drive device 1, a pressure head 2, a pressure sensor 12 and a controller. The linear drive device 1 drives the pressure head 2 to move linearly. It also includes a vibrating conveyor, which includes a linear trough body 3 with a prism-shaped inner surface and a linear exciter 4. The linear trough body 3 is connected to the linear exciter 4, and the ridge direction of the linear trough body 3 is parallel to the excitation and feeding direction of the linear exciter 4. The linear drive device 1, the pressure head 2, the linear trough body 3, and the pressure sensor 12 are arranged linearly from left to right. The material movement direction of the linear trough body 3 is toward the linear drive device 1. The back-and-forth driving direction of the linear drive device 1, the material movement direction of the linear trough body 3, and the force direction of the pressure sensor 12 are parallel to each other. The linear drive device 1, the linear exciter 4, and the pressure sensor 12 are all rigidly connected to the frame 14, and the linear drive device 1, the linear exciter 4, and the pressure sensor 12 are all electrically connected to the controller. The pressure sensor 12 is rigidly connected to the frame 14 through a cantilever 17.

[0034] Therefore, the linear trough 3 is used as a hardness testing platform, the tablet to be tested is located on the linear trough 3, and the pressing head 2 is driven by the linear driving device 1 to squeeze the tablet on the linear trough 3 facing the pressure sensor 12 to realize the hardness testing function; then, the crushed fragments and powder of the tablet are transported through the linear trough 3 driven by the linear exciter 4, and automatically moved out of the hardness testing platform (that is, the linear trough 3), avoiding manual cleaning, which is very convenient for detecting many special tablets or tablets that are harmful to the operator, and realizes automated unmanned continuous hardness testing.

[0035] The cross-sectional shape of the pressing head 2 perpendicular to its moving direction is consistent with and slightly smaller than the cross-sectional shape of the linear trough body 3 perpendicular to its opening direction. The pressing head 2 can move in the cavity of the linear trough body 3 along the opening direction of the linear trough body 3 without contacting each other, which is convenient for extruding tablets of various shapes and small sizes.

[0036] The cross section of the linear trough body 3 perpendicular to its opening direction is V-shaped, and the angle of the V-shaped cross section is ≥90°. The length of the linear trough body 3 is greater than the maximum size of the tablet. In this embodiment, the length of the linear trough body 3 is equal to the length of the long tablet or 3 times the diameter of the round tablet. Therefore, tablets of special shapes such as long strips are difficult to stand upright on one side of the V-groove. They can be arranged in posture through long-distance vibration transportation, so that the long strip tablets can be made to fall down and lie on one side of the V-groove or be placed in the middle of the V-groove in accordance with the tablet hardness test standards specified in the pharmacopoeia, and the length direction is consistent with the opening direction of the linear trough body 3, and one end of the length direction of the long strip tablet meets the pressure head 2. Finally, the pressure head 2 moves the long strip tablet so that the other end of its length direction contacts the pressure sensor 12 until it is crushed, realizing automatic unmanned material handling.

[0037] It is more difficult for round tablets to move upright during long-distance vibratory conveying, and they will eventually lie on one side of the V-shaped linear trough or be mounted in the middle of the V-trough to meet the pressing head 2 in the direction of the round edge diameter rather than in the thickness direction.

[0038] When the pressure head 2 is not extended, the distance between the pressure surface and the left end of the linear trough body 3 is greater than the maximum size of the tablet, that is, greater than the diameter of the tested round tablet or the long axis size of the long tablet, so as to facilitate the crushed tablet fragments of various sizes to fall between the pressure head 2 and the linear trough body 3.

[0039] When the ram 2 extends to the stroke limit, the distance between the ram 2 and the pressure sensor 12 is smaller than the maximum size of the tablet, so as to ensure that the ram 2 can extrude tablets of various sizes together with the pressure sensor 12 at a fixed position.

[0040] There is also a pressure seat 5 on the side of the pressure sensor 12 facing the pressure head 2. The strength of the pressure seat 5 is greater than the range of the tablet detector and less than the range of the pressure sensor 12. It is used to protect the pressure sensor 12. When the pressure head 2 is extended to the stroke limit, the distance between the pressure seat 5 and the pressure seat 5 is less than the maximum size of the tablet. The pressure seat 5 can be made of elastic material to reduce the slope of the instantaneous pressure-time curve when the tablet is crushed, and to lengthen the instantaneous time of tablet crushing, so that the controller can more easily obtain an accurate tablet hardness value.

[0041] The linear drive device 1 is a linear motor, the pressure sensor 12 is a cylindrical pressure sensor, and the linear drive shaft of the linear motor is concentric with the cylindrical axis of the cylindrical pressure sensor.

[0042] In order to ensure the sensing and control of the position of the pressure head 2, a position sensor is set at the left and right ends of the stroke of the pressure head 2, respectively, the first position sensor 4.1 and the second position sensor 4.2, which are electrically connected to the controller respectively. The position sensor can be a photoelectric tube, and a position trigger 4.3 for triggering the photoelectric tube for blocking light is set. The position trigger 4.3 is fixedly connected to the pressure head and moves synchronously. It can be a strip-shaped thin plate that can pass through the C-shaped photoelectric tube. The position of the pressure head 2 can be known through the two position sensors. The triggering of the first position sensor 4.1 indicates that the pressure head 2 is at the left end of the stroke, and the triggering of the second position sensor 4.2 indicates that the pressure head 2 is at the right end of the stroke of the pressure head 2.

[0043] Example 2: Figure 1-6 As shown, a tablet tester is provided, and the same parts as those of the embodiment 1 are not described in detail, except that it further comprises a feeding chute 6 which is perpendicular to and directly opposite to the linear trough body 3 and is located obliquely above the linear trough body 3, and the outlet of the feeding chute 6 is located at the right end of the linear trough body 3. The tablet to be tested can enter the right end of the linear trough body 3 as far as possible through the feeding chute 6, ensuring that there is enough distance for the long strip tablet to fall down through the V groove of the linear trough body 3 and the vibration conveyor, so that the length direction thereof is parallel to the opening direction of the linear trough body 3, so that the long strip tablet is finally squeezed at both ends of the long side.

[0044] The apparatus further comprises a weighing device, which comprises a material sorting device 10, a material moving device, a weighing sensor 8 and a weighing platform 7. The weighing platform 7 is connected to the weighing sensor 8. The material sorting device 10 and the weighing sensor 8 are both electrically connected to the control cabinet. The outlet of the weighing platform 7 is directly opposite to the inlet of the feeding chute 6, so as to realize the connection between the weighing device and the tablet hardness testing device, so that a tablet is weighed first and then the hardness is tested, thereby reducing the number of tablet samples and the operating cost, and facilitating the establishment of a numerical correlation between the weight and hardness of the same tablet.

[0045] The weighing platform 7 is a linear groove with a prism-shaped inner surface, the ridge direction of the linear groove is parallel to the ridge direction of the linear groove body 3, the outlet of the linear groove is directly opposite to the inlet of the feeding chute 6, and the material moving device is a material moving block 9 adapted to the inner surface of the linear groove, used to move tablets, and the material moving block 9 is rigidly connected to the pressure head 2 through the material moving connector 22. The linkage of the material moving mechanism of weighing and hardness testing is realized, the electrical logic control is convenient, the material moving mechanism of the weighing device is omitted, and the miniaturization of the weighing and hardness testing equipment is realized.

[0046] When the material moving block 9 is located at the left edge of the inlet of the feeding chute 6 , the pressure head 2 is located at the left side of the outlet of the feeding chute 6 .

[0047] It also includes a material sorting device 10 and a transition groove 11 located at the lower part thereof, the transition groove 11 is directly opposite to the weighing platform 7 and is located at the material entrance of the weighing platform 7, and a long groove is opened at the discharge end of the material sorting device 10, the width of the long groove is greater than the diameter of the round tablet or the short axis diameter of the long tablet and smaller than the long axis diameter of the long tablet, so that the long tablet can fall in a state where its long axis direction is parallel to the groove direction of the weighing platform 7, that is, the upper left side of the transition groove 11 is connected to the discharge port of the material sorting device 10, and the material sorting device 10 is electrically connected to the control cabinet. It also includes a silo 30 and a control gate 31.

[0048] When the pressure head 2 is located at the leftmost position of the stroke, the material transfer block 9 is located at the lower left end of the left end of the long slot at the outlet end of the material sorting device 10 to prevent the tablets falling from the material sorting device 10 from falling to the left side of the material transfer block 9.

[0049] The tablets in the silo 30 are sorted end to end in a row through the multi-stage sorting of the sorting device 10. For tablets of different sizes and shapes, the gate 31 is controlled to different heights to achieve different sorting speeds and control the detection speed.

[0050] A first light curtain sensor 8.1 and a second light curtain sensor 8.2 are arranged under the end notch of the material sorting device 10 to form a light curtain sensor, wherein one of the two light curtain sensors emits light and the other receives light.

[0051] The complete testing process is as follows: Figure 2 When the tablet falls from the long notch of the material handling device 10 to the transition groove 11, the light curtain sensor is triggered because it senses that the light is blocked by the tablet, and the material handling device 10 stops vibrating. Then, the material transfer block 9 moves the tablet to the weighing platform 7 through the material transfer connector 22 under the drive of the pressure head 2, then retreats a little and stops moving to avoid contact with the tablet and affect the weighing, and then weighs. After weighing is completed, the material transfer block 9 continues to move the tablet to the right to the entrance of the feeding chute 6 through the material transfer connector 22 under the drive of the pressure head 2. The tablet slides from the feeding chute 6 into the linear tank body 3. The linear tank body 3 makes the tablet vibrate and transport to the left, and makes the long strip tablet fall down along the length direction and stick to one side of the linear tank body 3. At this time, the pressure head 2 moves to the right until it seals the gap between it and the linear tank body 3. After a period of time, regardless of whether the tablet moves to the left end of the linear tank body 3, the linear tank body 3 stops vibrating, and the pressure head 2 starts to move to the right until it contacts the tablet and moves it to the right, until the distance between the tablet and the pressure seat 5 is less than the minimum diameter of the tablet, and the tablet is crushed. Then, the pressure head 2 moves left to the leftmost end of the stroke, that is, the starting point, and the linear tank body 3 starts to vibrate and vibrate the fragments and powder to the left, so that they fall onto the material receiving member 13. At the same time, the material sorting device 10 starts to vibrate and continues to transport the next tablet into the transition trough 11 to start the next cycle. The material receiving member 13 can be a receiving basket or a chute.

[0052] Example 3: Figure 7-9As shown, a tablet detector is described in detail. The same as that of Example 2 is not repeated here. The difference is that it also includes a discharge connection member 55, a moving device 56, and an uninspected product bin 57. The discharge connection member 55 is rigidly connected to the transition trough 11, and the discharge connection member 55 is also connected to the moving device 56. The uninspected product bin 57 is located directly below the transition trough 11. Fig. 9 When the specified number of inspections is completed, the moving device 56 moves the transition groove 11 away from under the notch at the end of the material sorting device 10 through the discharge connecting piece 55, and the uninspected excess products fall directly into the uninspected product bin 57 from the notch of the long groove at the end of the material sorting device 10, so that the bin 30 and the material sorting device 10 can quickly empty the uninspected products to prepare for the next batch of new products to be inspected.

[0053] The moving device 56 can be a linear cylinder or a rotary motor, and the rotating shaft of the rotary motor is arranged perpendicular to the horizontal plane.

Claims

1. A tablet detector, comprising a frame, a linear drive device, a pressing head, a pressure sensor and a controller, wherein the linear drive device drives the pressing head to move linearly, and is characterized in that: It also includes a vibrating conveyor, which includes a linear trough body with a prism-shaped inner surface and a linear vibrator. The linear trough body is connected to the linear vibrator. The ridge direction of the linear trough body is parallel to the vibration feeding direction of the linear vibrator. The linear drive device, the pressure head, the linear trough body, and the pressure sensor are arranged in a straight line from left to right. The back-and-forth driving direction of the linear drive device, the material moving direction of the linear trough body, and the force direction of the pressure sensor are parallel to each other. The linear drive device, the linear vibrator, and the pressure sensor are all rigidly connected to the frame, and the linear drive device, the linear vibrator, and the pressure sensor are all electrically connected to the controller.

2. The tablet detector according to claim 1, characterized in that: The cross-sectional shape of the pressure head perpendicular to its moving direction is consistent with the cross-sectional shape of the linear slot body perpendicular to its opening direction. The pressure head can move in the cavity of the linear slot body along the opening direction of the linear slot body without contacting each other.

3. The tablet detector according to claim 1, characterized in that: The cross section of the linear trough body perpendicular to its opening direction is V-shaped, the angle of the V-shaped cross section is ≥90°, and the length of the linear trough body is greater than the maximum size of the tablet.

4. The tablet detector according to claim 1, characterized in that: The material movement direction of the linear trough body is toward the linear driving device. When the pressure head is not extended, the distance between the extrusion working surface of the pressure head and the left end surface of the linear trough body is greater than the maximum size of the tablet.

5. The tablet detector according to claim 1, characterized in that: When the pressure head extends to the limit of its stroke, the distance between it and the pressure sensor is smaller than the maximum dimension of the tablet.

6. The tablet detector according to claim 1, characterized in that: The pressure sensor is provided with a pressure seat on the side facing the pressure head. When the pressure head is extended to the stroke limit, the distance between the pressure head and the pressure seat is smaller than the maximum size of the tablet.

7. The tablet detector according to claim 1, characterized in that: It also includes a feeding chute facing the linear trough body and located obliquely above the linear trough body, the outlet of the feeding chute facing the linear trough body vertically, and a weighing device, the weighing device including a material sorting device, a material moving device, a weighing sensor and a weighing platform, the weighing platform is connected to the weighing sensor, the material sorting device and the weighing sensor are electrically connected to the control cabinet, and the outlet of the weighing platform faces the entrance of the feeding chute.

8. The tablet detector according to claim 7, characterized in that: The weighing platform is a linear groove with a prism-shaped inner surface, the ridge direction of the linear groove is parallel to the ridge direction of the linear trough body, the material moving device is a material moving block adapted to the inner surface of the linear groove, and the material moving block is rigidly connected to the pressure head through a material moving connector.

9. The tablet testing instrument according to claim 8, characterized in that: When the material transfer block is located at the left edge of the feeding chute inlet, the pressure head is located on the left side of the feeding chute outlet.

10. The tablet testing instrument according to claim 8, characterized in that: There is also a transition groove with the same cross-section as the weighing platform between the material sorting device and the weighing platform. The transition groove is opposite to the material entrance of the weighing platform. The material moving device moves back and forth between the weighing platform and the transition groove. It also includes a discharge connecting piece, a moving device, and an uninspected product bin. The discharge connecting piece is rigidly connected to the transition groove and also connected to the moving device. The uninspected product bin is located directly below the transition groove.

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