A dissolution apparatus spindle calibration device

Abstract

The application belongs to the technical field of dissolution apparatus calibration, and particularly relates to a dissolution apparatus rotating shaft calibration device, which comprises a laser displacement sensor and a perpendicularity calibration unit for calibrating the shaft rod of the dissolution apparatus; further comprises: a base body which is detachably arranged at the cup opening of the dissolution cup through a limiting buckle assembly; a bending plate which is arranged on the base body; a power assembly which is arranged on the bending plate and cooperates with the base body to drive the bending plate to rotate around the cup opening of the dissolution cup; and a radial pushing assembly which is used for arranging the laser displacement sensor or the perpendicularity calibration unit on the bending plate and pushing the laser displacement sensor or the perpendicularity calibration unit to move in the radial direction of the dissolution cup; the scheme can enable the laser displacement sensor and the perpendicularity calibration unit to be in an automatic state to calibrate the shaft rod, thereby improving the accuracy of the dissolution apparatus rotating shaft calibration.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of dissolution apparatus calibration, and particularly relates to a rotating shaft calibration device for a dissolution apparatus. BACKGROUND

[0002] Dissolution is the dissolution rate and degree of an active pharmaceutical ingredient from a tablet, a capsule or a granule preparation under a specified condition. It is a simple in-vitro test method for simulating the disintegration and dissolution of an oral solid preparation in a gastrointestinal tract, and is an important index for evaluating the quality of an oral solid preparation.

[0003] The existing rotating shaft or shaft rod of a dissolution apparatus is calibrated by mainly using a dial indicator that can be assembled on the shaft rod to calibrate the coaxiality of the rotating shaft.

[0004] The perpendicularity of the rotating shaft is calibrated by directly using a handheld verticality calibration unit to adhere to the rod body of the rotating shaft to calibrate the perpendicularity parameters. However, when the perpendicularity of the rotating shaft is calibrated, the verticality calibration unit needs to rotate at least 90 degrees around the rod body of the rotating shaft. Therefore, if the verticality calibration unit is tilted or deviated when adhering to the shaft rod of the rotating shaft, the accuracy of the perpendicularity calibration of the rotating shaft will be affected, and the normal use of the dissolution apparatus will be affected.

[0005] The swing degree and other parameters of the rotating shaft are calibrated by mainly placing a laser displacement sensor directly on the table surface of the dissolution apparatus, so that the laser of the laser displacement sensor hits the rotating shaft to calibrate the swing degree parameters of the rotating shaft. Obviously, if the laser displacement sensor is not placed flat or the laser hitting the rotating shaft is not accurate, the accuracy of the swing degree calibration of the rotating shaft will be affected. SUMMARY

[0006] To solve the above technical problems, the application is realized by the following technical scheme:

[0007] The application is a rotating shaft calibration device for a dissolution apparatus, which comprises a laser displacement sensor and a perpendicularity calibration unit for calibrating the shaft rod of the dissolution apparatus.

[0008] The base body is detachably arranged at the cup opening of the dissolution cup through a plurality of limiting buckle assemblies.

[0009] The bending plate is arranged on the base body.

[0010] The power assembly is arranged on the bending plate and cooperates with the base body to drive the bending plate to rotate around the cup opening of the dissolution cup.

[0011] and a radial pushing assembly for mounting the laser displacement sensor or the verticality calibration unit on the bending plate and pushing the laser displacement sensor or the verticality calibration unit to move along the radial direction of the dissolution cup.

[0012] In the embodiment, each set of the limiting buckle assembly comprises a bottom support plate mounted on the top boss of the dissolution cup, an arc-shaped plate placed on the lower surface of the bottom support plate and located inside the dissolution cup, a square block seat placed on the lower surface of the bottom support plate and located outside the dissolution cup, a clamping block movably placed in the square block seat for clamping the boss, and a first screw threadedly connected to the square block seat and used for driving the clamping block to move.

[0013] In the embodiment, the wall surface of the bottom support plate and the arc-shaped plate that is in contact with the dissolution cup is provided with a rubber layer.

[0014] In the embodiment, the base body comprises an arc-shaped strip symmetrically mounted on the upper surface of the boss through two sets of bottom support plates, a butt joint square hole opened at both ends of the arc-shaped strip, an arc-shaped connecting strip movably mounted in the two opposite butt joint square holes respectively, a countersunk hole penetratingly opened on the top surface of the butt joint square hole, a locking hole opened on the bottom surface of the butt joint square hole and corresponding to the countersunk hole, and a locking bolt movably placed in the countersunk hole, and the shank of the locking bolt is threadedly connected with the locking hole through the through hole opened on the arc-shaped connecting strip.

[0015] In the embodiment, the outer circumferential surface of the butt joint square hole is penetratingly provided with a butt joint notch, and the height dimension of the butt joint notch is the same as that of the butt joint square hole.

[0016] In the embodiment, the outer circumferential surface of the butt joint square hole is penetratingly provided with a butt joint notch, and the height dimension of the butt joint notch is the same as that of the butt joint square hole; the outer circumferential surface of the arc-shaped strip away from the butt joint notch is formed with a long tooth, and the outer wall surface of the butt joint notch is symmetrically provided with a short tooth upward and downward; the outer circumferential surface of the arc-shaped connecting strip is formed with an arc-shaped protruding strip matched with the butt joint notch, and the outer circumferential surface of the arc-shaped protruding strip is formed with a middle tooth; the distance between the adjacent two short teeth, the middle tooth and the long tooth is the same, the length of the middle tooth is the same as the distance between the two short teeth upward and downward, and the shape of the middle tooth aligned with the two short teeth upward and downward is the same as that of the long tooth.

[0017] The power assembly comprises a motor mounted on the bending plate and a gear connected with the output shaft of the motor; wherein the gears are in meshing transmission with the short tooth, the middle tooth and the long tooth.

[0018] In the embodiment, the power assembly further comprises a T-shaped guide groove opened on the inner circumferential surface of the arc-shaped strip, a T-shaped sliding strip movably mounted in the T-shaped guide groove, and a second screw connecting the T-shaped sliding strip and the vertical plate of the bending plate.

[0019] In the embodiment, the radial pushing assembly comprises a T-shaped straight line arranged on the horizontal plate of the bending plate, a straight sliding bar movably sleeved on the T-shaped straight line, and an L-shaped supporting plate arranged on the straight sliding bar and used for mounting the laser displacement sensor or the perpendicularity calibration unit.

[0020] The T-shaped cavity in the straight sliding bar is open at one end of the shaft and closed at the other end, and a top wall of the T-shaped cavity is provided with an adjusting long slot for the third screw.

[0021] When the bending plate is mounted on the base body, the T-shaped straight line is directed towards the center line of the dissolution cup.

[0022] In the embodiment, the radial pushing assembly further comprises a spring member arranged on the horizontal plate of the L-shaped supporting plate, a supporting plate arranged on the top of the spring member, a first threaded hole arranged on the supporting plate and aligned with the spring member, and a second threaded hole arranged on the horizontal plate of the L-shaped supporting plate and aligned with the first threaded hole.

[0023] When the perpendicularity calibration unit is arranged on the supporting plate, the fourth screw is connected with the first threaded hole.

[0024] When the laser displacement sensor is arranged on the supporting plate, the fourth screw is connected with the second threaded hole.

[0025] In the embodiment, the perpendicularity calibration unit comprises a protective box arranged outside the inclination sensor, a threading hole arranged on the wall of the protective box, and a semicircular groove arranged on the vertical side wall of the protective box.

[0026] The protective box and the laser displacement sensor are both provided with through holes for the fourth screw.

[0027] The present application has the following advantages:

[0028] The laser displacement sensor and the perpendicularity calibration unit are detachably mounted on the bending plate through the radial pushing assembly, and the bending plate is mounted on the base body fixed on the cup opening of the dissolution cup, so that the bending plate can serve as the base or reference point of the laser displacement sensor and the perpendicularity calibration unit, and the laser displacement sensor and the perpendicularity calibration unit can be in an automatic state to calibrate the shaft.

[0029] The perpendicularity calibration unit installed on the bending plate can be pushed by the radial pushing component to fit tightly against the shaft to be calibrated, eliminating the need for the operator to hold the perpendicularity calibration unit against the shaft. The power component can also drive the perpendicularity calibration unit to rotate 360° around the shaft, allowing the perpendicularity calibration unit to rotate around the shaft at different angles as needed to calibrate the perpendicularity of the shaft, thereby reducing the labor intensity of the operator.

[0030] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the shaft perpendicularity calibration structure in this embodiment;

[0033] Figure 2 This is a schematic diagram of the shaft wobble calibration structure in this embodiment;

[0034] Figure 3 This is an assembly diagram of the base, bending plate, power assembly, and radial pushing assembly in this embodiment;

[0035] Figure 4 This is a schematic diagram of the structure of the limiting fastening component in this embodiment;

[0036] Figure 5 This is a schematic diagram of the base structure in this embodiment;

[0037] Figure 6 This is a diagram showing the separated state of the arc-shaped strip and the arc-shaped connecting strip in this embodiment;

[0038] Figure 7 This is a schematic diagram of the bent plate in this embodiment;

[0039] Figure 8 This is an exploded view of the radial displacement assembly in this embodiment;

[0040] Figure 9 This is an exploded view of the laser displacement sensor and support plate in this embodiment;

[0041] Figure 10 This is an exploded view of the verticality calibration unit and support plate in this embodiment.

[0042] In the diagram: 1. Laser displacement sensor;

[0043] 2. Verticality calibration unit;

[0044] 3. Base body; 31. Arc-shaped strip; 311. Butt joint square hole; 312. Countersunk hole; 313. Locking hole; 314. Butt joint notch; 315. T-shaped guide groove; 32. Arc-shaped connecting strip; 33. Locking bolt; 34. Long tooth; 35. Short tooth; 36. Arc-shaped raised strip; 37. Medium tooth;

[0045] 4. Limiting and fastening assembly; 41. Bottom support plate; 42. Arc-shaped plate; 43. Square frame base; 44. Clamping block;

[0046] 5. Bending plate; 51. Concealed slide rail; 6. Power assembly; 61. Gear; 62. T-shaped slide bar;

[0047] 7. Radial pushing assembly; 71. T-shaped straight bar; 72. Straight slider; 73. L-shaped support plate; 74. T-shaped cavity; 75. Adjusting groove; 76. Spring component; 77. Support plate; 78. First threaded hole; 79. Second threaded hole;

[0048] 8. Protective box; 81. Semicircular groove;

[0049] 9. Dissolution cup; 91. Boss;

[0050] 10. Shaft. Detailed Implementation

[0051] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0053] Please see Figures 1 to 3As shown, the present invention is a dissolution meter shaft calibration device, including a laser displacement sensor 1 and a perpendicularity calibration unit 2 for calibrating the shaft 10 of the dissolution meter; it also includes: a base body 3, which is detachably mounted at the mouth of the dissolution cup 9 by multiple sets of limiting fastening components 4; a bending plate 5, mounted on the base body 3; a power component 6, mounted on the bending plate 5 and cooperating with the base body 3, for driving the bending plate 5 to rotate circumferentially around the mouth of the dissolution cup 9; and a radial pushing component 7, for mounting the laser displacement sensor 1 or the perpendicularity calibration unit 2 on the bending plate 5 and pushing the laser displacement sensor 1 or the perpendicularity calibration unit 2 to move in the radial direction of the dissolution cup 9;

[0054] It should be noted that the base body 3 is ring-shaped, which allows it to better match the mouth of the dissolution cup 9. Then, the ring-shaped base body 3 is installed at the mouth of the dissolution cup 9 by the limiting fastening component 4. The bending plate 5 can be assembled onto the ring-shaped base body 3 by the power component 6. The radial pushing component 7 can install the laser displacement sensor 1 or the verticality calibration unit 2 separately onto the bending plate 5, so that the laser displacement sensor 1 or the verticality calibration unit 2 can be installed near the mouth of the dissolution cup 9 with the horizontal plate of the bending plate 5 as the "reference surface". This avoids the situation where there is no "base or reference point" around the dissolution cup 9 for the laser displacement sensor 1 or the verticality calibration unit 2 to be installed, which would prevent the laser displacement sensor 1 or the verticality calibration unit 2 from being used only by hand or by simple support.

[0055] For example, when the verticality calibration unit 2 is installed on the bending plate 5 through the radial pushing component 7, and the verticality of the shaft 10 needs to be calibrated, the verticality calibration unit 2 needs to extend out of the bending plate 5, and then push part of the structure of the radial pushing component 7 so that it moves the verticality calibration unit 2 to the shaft 10 and the semi-circular groove 81 of the verticality calibration unit 2 fits against the shaft 10. Then, the power component 6 drives the verticality calibration unit 2 to rotate around the shaft 10 to achieve the calibration of the verticality parameter of the shaft 10.

[0056] For example, when it is necessary to calibrate the swing of the shaft 10, the laser displacement sensor 1 is first installed on the bending plate 5 through the radial pushing assembly 7. The radial pushing assembly 7 can then push the laser displacement sensor 1 to move radially at the mouth of the dissolution cup 9, so that it can adjust the distance between the laser beam emitted by the laser displacement sensor 1 and the shaft 10, preventing the laser displacement sensor 1 from being too far away from the shaft 10 to be calibrated, which would cause the emitted laser beam to not accurately hit the shaft 10. Then, the shaft 10 is turned on to rotate, and the difference between the maximum and minimum displacements is calculated to measure the swing parameter of the basket shaft or paddle shaft.

[0057] This solution ingeniously integrates the laser displacement sensor 1 and the perpendicularity calibration unit 2 into the bending plate 5 via the radial pushing assembly 7. The bending plate 5 is mounted on the base 3 fixed at the mouth of the dissolution cup 9. Therefore, the bending plate 5 can serve as the "base or reference point" for the laser displacement sensor 1 and the perpendicularity calibration unit 2, enabling the laser displacement sensor 1 and the perpendicularity calibration unit 2 to perform calibration on the shaft 10 in an automated state.

[0058] The perpendicularity calibration unit 2 installed on the bending plate 5 can be pushed by the radial pushing component 7 to fit tightly against the shaft 10 to be calibrated, eliminating the need for the operator to hold the perpendicularity calibration unit 2 against the shaft 10. The power component 6 can drive the perpendicularity calibration unit 2 to rotate 360° around the shaft 10, allowing the perpendicularity calibration unit 2 to rotate around the shaft 10 at different angles as needed to calibrate the perpendicularity of the shaft 10. This not only reduces the labor intensity of the operator but also prevents the accuracy of the perpendicularity calibration of the shaft 10 from being affected by the limited twisting angle of the operator's arm when the handheld perpendicularity calibration unit 2 rotates around the shaft 10.

[0059] As a preferred implementation of this solution, see [link / reference]. Figure 1 , Figure 3 and Figure 4 As shown, the limiting fastening assembly 4 includes a bottom support plate 41 installed on the top boss 91 of the dissolution cup 9, an arc-shaped plate 42 placed on the lower surface of the bottom support plate 41 and located inside the dissolution cup 9, a square frame seat 43 placed on the lower surface of the bottom support plate 41 and located outside the dissolution cup 9, a clamping block 44 movably placed inside the square frame seat 43 for clamping onto the boss 91, and a first screw threaded to the square frame seat 43 for driving the clamping block 44 to move.

[0060] It should be noted that the bottom support plate 41 and the arc plate 42 are integrally formed, and the wall surface where the bottom support plate 41, the arc plate 42 and the boss 91 are attached is provided with a rubber layer to prevent the bottom support plate 41 and the arc plate 42 from damaging the dissolution cup 9 when the base body 3 is installed at the upper cup mouth of the dissolution cup 9. The first screw connected to the square frame base 43 is preferably a Torx handle screw.

[0061] When the base body 3 needs to be installed at the mouth of the dissolution cup 9, the base body 3 is first placed above the boss 91 of the dissolution cup 9. At this time, the bottom support plate 41 will contact the upper surface of the boss 91, and the arc plate 42 will fit against the cup wall of the dissolution cup 9. The transition gap formed between the square frame seat 43 and the arc plate 42 will match the radial thickness of the boss 91. Then, the first screw is turned so that the first screw, through the nut welded to the outer side of the square frame seat 43, pushes the clamping block 44 located in the square frame seat 43 to fit against the outer ring surface of the boss 91. The surface of the clamping block 44 corresponding to the boss 91 is an arc surface and is provided with a rubber layer, which makes it easier to fix the base body 3 on the boss 91 of the dissolution cup 9, so as to support and install the laser displacement sensor 1 and the verticality calibration unit 2.

[0062] Furthermore, after the laser displacement sensor 1 is installed on the base 3 via the bending plate 5, it is possible to first check whether the laser of the laser displacement sensor 1 is hitting the shaft 10. If it is not hitting the shaft 10, the first screw on the outer side of the symmetrical bottom support plate 41 can be twisted to move the corresponding clamping block 44 under one of the bottom support plates 41 outward within the square frame 43, while the other symmetrically arranged clamping block 44 will move inward into the square frame 43. Since the arc plate 42 is in contact with the inner wall of the dissolution cup 9 through a rubber layer, as one of the clamping blocks 44 moves towards the boss 91... When the outer ring surface moves, the arc plate 42 will move towards the inner wall of the dissolution cup 9, and the corresponding rubber layer will be compressed. Meanwhile, the other clamping block 44 will move away from the outer ring surface of the boss 91. At this time, the arc plate 42 will move away from the inner wall of the dissolution cup 9, and the corresponding rubber layer will be released. This makes it easier to adjust the position of the annular base 3 in the dissolution cup 9, so that the laser of the laser displacement sensor 1 can accurately hit the shaft 10. This allows the laser displacement sensor 1 to accurately calibrate the swing parameter of the shaft 10, and also allows the radially moving perpendicularity calibration unit 2 to fit tightly against the shaft 10.

[0063] By reversing the first screw, the clamping block 44 is moved away from the outer ring surface of the boss 91, which facilitates the removal of the base body 3 from the mouth of the dissolution cup 9, thereby facilitating the calibration of the shaft 10 of the next dissolution meter.

[0064] As a preferred embodiment of this solution, since dissolution meters are divided into dissolution meters with split-shaft propellers and dissolution meters with integrated rotating shafts, and are also multi-cup, multi-rod type, such as an eight-cup, eight-rod dissolution meter; multiple shafts 10 of the multi-cup, multi-rod dissolution meter need to be calibrated. Therefore, the base body 3 needs to be installed sequentially on the bosses 91 of multiple dissolution cups 9 for the installation of the laser displacement sensor 1 or the verticality calibration unit 2. If the base body 3 is an integrated unit, the operator needs to frequently raise and lower multiple shafts 10 to install the base body 3 sequentially on the bosses 91 of multiple dissolution cups 9. This installation method not only affects the calibration efficiency of the shafts 10 of the multi-rod, multi-cup dissolution meter, but also causes unnecessary waste of electrical energy due to the sequential raising and lowering of multiple shafts 10. This solution makes the following design:

[0065] See 3. Figure 5 and Figure 6 As shown, the base body 3 includes: an arc-shaped strip 31, symmetrically mounted on the upper surface of the boss 91 via two sets of bottom support plates 41; a mating square hole 311, opened at both ends of the arc-shaped strip 31; an arc-shaped connecting strip 32, with both ends movably mounted in the mating square holes 311 opened at the corresponding ends of the two symmetrical arc-shaped strips 31; a countersunk hole 312, penetrating the top surface of the mating square hole 311; a locking hole 313, opened on the bottom surface of the mating square hole 311, and corresponding to the countersunk hole 312; and a locking bolt 33, the locking bolt 33 being movably placed in the countersunk hole 312, and the thread of the locking bolt 33 penetrating the through hole opened on the arc-shaped connecting strip 32 and threadedly connected to the locking hole 313;

[0066] The outer ring surface of the docking square hole 311 is provided with a docking notch 314, and the height of the docking notch 314 is equal to the height of the docking square hole 311.

[0067] It should be further explained that: the square hole 311 and the notch 314 are both arc-shaped and opened at both ends of the arc-shaped strip 31. The locking bolt 33 connected to the arc-shaped connecting strip 32 is preferably an internal hexagonal head screw, and the thickness of the cylindrical head is similar to the depth of the countersunk hole 312. Although the arc lengths of the symmetrical arc-shaped strip 31 and the symmetrical arc-shaped connecting strip 32 are different, all four are located on the same center.

[0068] The circular base 3 is used as follows:

[0069] When it is necessary to calibrate the shaft 10 of the dissolution meter with a split propeller shaft, the base body 3 can be assembled into a complete circular base body 3 first. The specific assembly method is as follows:

[0070] First, bring the two ends of the two arc-shaped strips 31 close to each other. Then, move the two arc-shaped connecting strips 32 radially so that the two ends of the same arc-shaped connecting strip 32 are inserted into the corresponding mating notches 314 and mating square holes 311 of the two arc-shaped strips 31. At this time, the end face and inner arc surface of the arc-shaped connecting strip 32 will abut against the hole wall of the mating square hole 311, aligning the through hole on the arc-shaped connecting strip 32 with the countersunk hole 312 and the locking hole 313. Then... Insert the internal hexagonal head locking bolt 33 into the countersunk hole 312, so that the screw of the locking bolt 33 passes downward through the through hole and is threaded into the locking hole 313. The cylindrical head of the locking bolt 33 will be located in the countersunk hole 312, which makes it easier to connect the symmetrical arc strips 31 through the symmetrical arc connecting strips 32 to form a ring-shaped base body 3. Then, the assembled base body 3 is installed on the boss 91 through the limiting fastening assembly 4 to realize the installation and use of the ring-shaped base body 3.

[0071] When it is necessary to calibrate the shaft 10 of the integral rotating dissolution meter, the base 3 is installed and disassembled on multiple dissolution cups 9 in the following manner:

[0072] When it is necessary to remove the base body 3 from the dissolution cup 9 corresponding to the calibrated shaft 10, first remove the locking bolt 33 located in the countersunk hole 312 on one of the arc-shaped connecting strips 32. Then, use a radial prying method to make the arc-shaped connecting strip 32 exit from the mating square hole 311 opened at the corresponding ends of the two arc-shaped strips 31. At this time, the removed arc-shaped connecting strip 32 will make the corresponding ends of the symmetrical arc-shaped strips 31 in a "notch" state, and the size of the "notch" is larger than the diameter of the shaft 10. Then, remove the limiting fastening assembly 4 from the boss 91. At this time, the operator can lift the base body 3 upward so that the limiting fastening assembly 4 is higher than the boss 91. Then, slowly pull the base body 3 radially so that the removed base body 3 can be separated from the shaft 10 through the formed "notch". Thus, the base body 3 can be quickly removed from the dissolution cup 9 without completely separating the entire base body 3 into multiple arc-shaped strips 31.

[0073] When the disassembled base body 3 needs to be installed onto the boss 91 of the next dissolution cup 9, first align the "notch" formed on the base body 3 with the shaft 10, then push the base body 3 radially so that the shaft 10 transitions from the "notch" into the base body 3, then move the base body 3 down so that the limiting fastening assembly 4 can contact the boss 91, then push the separated arc-shaped connecting strip 32 radially into the "notch" so that the two ends of the arc-shaped connecting strip 32 can be directly inserted into the docking square hole 311 through the docking notch 314, and then fix the arc-shaped connecting strip 32 onto the symmetrical arc-shaped strip 31 with the locking bolt 33, so that a complete base body 3 can be spliced ​​together, so that the power assembly 6 can drive the verticality calibration unit 2 installed on the bending plate 5 to rotate around the base body 3, so that the verticality calibration unit 2 can accurately perform verticality calibration on the shaft 10;

[0074] When the base body 3 is disassembled from the previous dissolution cup 9 and transferred to the next dissolution cup 9, only one of the arc-shaped connecting strips 32 is disassembled from the two symmetrical arc-shaped strips 31, so that a "gap" is formed on the base body 3 to facilitate the transition of the shaft 10. Then the arc-shaped connecting strip 32 is installed at the "gap". When the arc-shaped connecting strip 32 is installed, the symmetrical arc-shaped strips 31 are already connected by the other arc-shaped connecting strip 32, so that the base body 3 is in a stable state. Therefore, the installation of the arc-shaped connecting strip 32 is only to seal the gap, so that the power component 6 can drive the verticality calibration unit 2 installed on the bending plate 5 to rotate 360° around the base body 3 without affecting the overall accuracy of the spliced ​​base body 3.

[0075] The symmetrical arc-shaped strips 31 are connected by symmetrical arc-shaped connecting strips 32, rather than by a single arc-shaped connecting strip 32. This is to prevent the operator from having to drive the bending plate 5 to rotate again to disengage from the arc-shaped connecting strip 32 when the base body 3 needs to be removed from the boss 91 after the bending plate 5 has rotated to the position of one of the arc-shaped connecting strips 32. This also prevents the base body 3 from being unable to be quickly removed from the boss 91 when it is installed on the boss 91 of the multi-cup multi-rod dissolution meter because one of the arc-shaped connecting strips 32 is located inside the boss 91.

[0076] This solution ingeniously uses two symmetrical arc-shaped strips 31 and two symmetrical arc-shaped connecting strips 32 to splice the base body 3 together. This allows the spliced ​​base body 3 to be installed on the dissolution cup 9 of the split-type paddle shaft dissolution meter, and also to be quickly assembled on the dissolution cup 9 of the integral rotating shaft dissolution meter. This eliminates the need for operators to frequently raise and lower multiple shafts 10 to install the base body 3 onto the bosses 91 of multiple dissolution cups 9 in sequence, thereby accelerating the calibration efficiency of the shafts 10 of the multi-rod multi-cup dissolution meter.

[0077] Furthermore, to facilitate the stable rotation of the verticality calibration unit 2, which is mounted on the bending plate 5, by the power component 6 on the assembled base body 3, so as to realize the automatic parameter calibration of the shaft 10 by the verticality calibration unit 2, this scheme is designed as follows:

[0078] See Figure 3 , Figure 5 and Figure 6 As shown, the outer surface of the arc-shaped strip 31 away from the docking notch 314 has long teeth 34, and the outer wall surface of the docking notch 314 has short teeth 35 symmetrically arranged above and below; the outer surface of the arc-shaped connecting strip 32 has an arc-shaped protrusion 36 that matches the docking notch 314, and the outer surface of the arc-shaped protrusion 36 has a middle tooth 37; the spacing between two adjacent short teeth 35, middle teeth 37 and long teeth 34 is the same, and the length of the middle tooth 37 is the same as the distance between the upper and lower short teeth 35, and the shape of the middle tooth 37 aligned with the upper and lower short teeth 35 is the same as the shape of the long tooth 34;

[0079] Specifically, when the arc-shaped connecting strip 32 is pushed into the mating square hole 311, the arc-shaped protrusion strip 36 will be pushed into the mating notch 314 at the same time. Since the thickness of the arc-shaped protrusion strip 36 is the same as the thickness of the arc-shaped connecting strip 32, the middle tooth 37 set on the outer ring surface of the arc-shaped protrusion strip 36 will be aligned with the short tooth 35 at the mating notch 314, so that the length formed by the two is the same as the length formed by the long tooth 34. Then, when the gear 61 of the power component 6 rotates around the assembled base body 3 under the drive of the motor, the teeth of the gear 61 will mesh with the long tooth 34 formed on the outer ring surface of the base body 3 and the aligned middle tooth 37 and short tooth 35, which makes it easier for the bending plate 5 to drive the verticality calibration unit 2 to rotate.

[0080] Since the arc-shaped connecting strip 32 is fully inserted into the corresponding two mating square holes 311, when the gear 61 rotates to the arc-shaped connecting strip 32, the middle teeth 37 formed by the outer ring surface of the arc-shaped protrusion strip 36 will also mesh with the gear 61. This makes it easier for the bending plate 5 to rotate 360° around the spliced ​​base body 3 by the drive of the power component 6. This prevents the spliced ​​base body 3 from being connected by other connecting parts, which would cause the gear 61 to fail to accurately mesh with the teeth formed by the outer ring surface of the spliced ​​base body 3. This would affect the verticality calibration unit 2's 360° rotation on the base body 3, and thus affect the verticality calibration unit 2's calibration process for the shaft 10.

[0081] This solution cleverly connects two symmetrical arc-shaped strips 31 by symmetrical arc-shaped connecting strips 32. The middle teeth 37 formed on the outer arc surface of the arc-shaped connecting strip 32 can not only mesh with the gear 61 for transmission, but also align with the short teeth 35 on the outer ring surface of the mating notch 314 to form a structure with the same shape as the long teeth 34. This facilitates the stable and safe transition of the gear 61 from the arc-shaped connecting strip 32 to the arc-shaped strip 31. It prevents the two existing arc-shaped strips 31 from being connected by the upper and lower connecting plates and bolts or by other connection methods, which would cause the gear 61 to fail to mesh accurately with the teeth formed on the outer ring surface of the spliced ​​base body 3, or cause the bent plate 5 to fail to fit against the upper surface of the base body 3 and rotate. This would affect the accurate support and installation of the verticality calibration unit 2 by the bent plate 5.

[0082] As a preferred implementation of this solution, see [link / reference]. Figure 3 and Figure 7 As shown, the power assembly 6 includes a motor mounted on the bending plate 5 and gears 61 connected to the output shaft of the motor; wherein, the gears 61 mesh with short teeth 35, medium teeth 37 and long teeth 34 for transmission; the power assembly 6 also includes a T-shaped guide groove 315 formed on the inner surface of the arc-shaped strip 31, a T-shaped slide bar 62 movably mounted in the T-shaped guide groove 315, and a second screw connecting the T-shaped slide bar 62 and the vertical plate of the bending plate 5;

[0083] It should be noted that the motor is preferably a servo motor and is fixed on the upper surface of the horizontal plate of the bending plate 5 and hidden in the box in which the circuit board is installed. The height of the gear 61 matches the thickness of the base body 3, so that the gear 61 can mesh with the middle tooth 37, the vertically symmetrical short tooth 35, the mutually aligned middle tooth 37 and short tooth 35 and the long tooth 34. The T-shaped slide bar 62 and the vertical plate of the bending plate 5 are both arc-shaped structures. The second screw is preferably a Torx handle screw or a screw of other shapes.

[0084] When it is necessary to install the bending plate 5 onto the base body 3, first place the horizontal plate of the bending plate 5 on the upper surface of the base body 3, ensuring that the teeth of the gear 61 mesh with the long teeth 34 formed by the outer ring surface of the arc strip 31, and the vertical plate of the bending plate 5 will fit against the inner ring surface of the arc strip 31. Then, twist the second screw on the outer ring surface of the vertical plate to connect its thread to the T-shaped slide bar 62, thereby facilitating the installation of the bending plate 5 onto the upper surface of the base body 3.

[0085] Since the T-shaped slider 62 slides within the T-shaped guide groove 315, it drives the bending plate 5 to rotate around the base body 3 without interfering with the meshing of the gear 61 and the teeth. Because the T-shaped slider 62 can only slide circumferentially within the T-shaped guide groove 315 and will not disengage from it, the connection between the bending plate 5 and the T-shaped slider 62 will limit the vertical movement of the rotating bending plate 5, preventing the bending plate 5 from disengaging from the base body 3 when it rotates on the base body 3. At the same time, it will also ensure that the gear 61 and the teeth mesh accurately for transmission.

[0086] As a preferred implementation of this solution, see [link / reference]. Figures 7 to 10 As shown, the radial pushing assembly 7 includes a T-shaped straight bar 71 mounted on the horizontal plate of the bending plate 5, a straight slide bar 72 movably sleeved on the T-shaped straight bar 71, and an L-shaped support plate 73 mounted on the straight slide bar 72 for mounting the laser displacement sensor 1 or the verticality calibration unit 2.

[0087] The linear slide bar 72 has a T-shaped cavity 74 that mates with the T-shaped linear bar 71. The end of the T-shaped cavity 74 facing the shaft 10 is open, and the other end is closed.

[0088] The top wall of the T-shaped cavity 74 is provided with an adjustment slot 75 for the third screw to move, and the linear slide bar 72 is fixed on the T-shaped linear bar 71.

[0089] When the bending plate 5 is installed on the base body 3, the T-shaped straight bar 71 is oriented towards the center line of the dissolution cup 9;

[0090] It should be noted that if the laser displacement sensor 1 needs to be installed on the bending plate 5, the laser displacement sensor 1 can be installed on the L-shaped support plate 73 first. Then, the open end of the T-shaped cavity 74 on the linear slide bar 72 is aligned with the T-shaped straight bar 71. Then, the linear slide bar 72 is pushed so that it slides along the T-shaped straight bar 71. At this time, the L-shaped support plate 73 will slide synchronously above the bending plate 5. Then, it is only necessary to adjust the inner end of the L-shaped support plate 73 to be flush with the vertical plate of the bending plate 5 or extend a small distance beyond the vertical plate according to the size of the laser displacement sensor 1. Then, the third screw is passed through the adjusting slot 75 and connected to the threaded hole on the T-shaped straight bar 71. With the cooperation of the third screw and the washer, the linear slide bar 72 can be fixed on the T-shaped straight bar 71, which makes it easier for the laser displacement sensor 1 to be installed on the bending plate 5 through the L-shaped support plate 73, so as to realize the calibration of the shaft 10.

[0091] If the verticality calibration unit 2 is needed to calibrate the verticality of the shaft 10, the verticality calibration unit 2 can be installed on the L-shaped support plate 73 first, and then the linear slide bar 72 can be pushed. Since the length of the linear slide bar 72 is greater than the radius of the base body 3 when adjusted to the maximum state, it is guided by the T-shaped linear bar 71 to move the verticality calibration unit 2 to fit against the outer ring surface of the shaft 10, thus facilitating the accurate fitting of the verticality calibration unit 2 with the shaft 10. Since the linear slide bar 72 is engaged with the T-shaped linear bar 71 through the T-shaped cavity 74, it can play a role in vertically limiting the linear slide bar 72, preventing the gravity of the verticality calibration unit 2 from causing the end of the linear slide bar 72 away from the verticality calibration unit 2 to tilt up, which would affect the stable and accurate fitting of the verticality calibration unit 2 with the shaft 10.

[0092] By twisting the third screw on the long groove 75 in the opposite direction, the linear slide bar 72 and the T-shaped linear bar 71 can be disengaged from the fixed position, making it easier to pull the linear slide bar 72 to move and adjust the position of the laser displacement sensor 1.

[0093] Furthermore, in order to enable the verticality calibration unit 2 to accurately fit the shaft 10 at different tilt angles and perform verticality calibration on the shaft 10 at different tilt angles, thereby expanding the verticality calibration range of the verticality calibration unit 2 on the shaft 10, while not affecting the precise installation of the laser displacement sensor 1 on the L-shaped support plate 73;

[0094] See Figures 7 to 10 As shown, the radial pushing assembly 7 also includes a spring member 76 mounted on the horizontal plate of the L-shaped support plate 73, a support plate 77 mounted on the top of the spring member 76, a first threaded hole 78 opened on the support plate 77 and aligned with the spring member 76, and a second threaded hole 79 opened on the horizontal plate of the L-shaped support plate 73 and aligned with the first threaded hole 78.

[0095] When the verticality calibration unit is installed on the support plate 77, it is connected to the first threaded hole 78 through the fourth screw.

[0096] When the laser displacement sensor is mounted on the support plate 77, it is connected to the second threaded hole 79 by the fourth screw.

[0097] It should be noted that there are four springs 76, four first threaded holes 78 and four second threaded holes 79, located near the four corners of the support plate 77, and the diameters of the first threaded holes 78 and the second threaded holes 79 are smaller than the inner diameter of the spring 76.

[0098] When the laser displacement sensor 1 needs to be installed on the L-shaped support plate 73, the fourth screw of the longer Phillips head handle needs to be inserted into the through hole of the laser displacement sensor 1, preferably four through holes. Then, the laser displacement sensor 1 is placed on the support plate 77, and the fourth screw of the Phillips head handle located on the laser displacement sensor 1 is rotated in sequence, so that the screw of the fourth screw passes through the first threaded hole 78 and the spring member 76 and is threaded into the second threaded hole 79, so that the multiple fourth screws can stably install the laser displacement sensor 1 onto the support plate 73. The support plate 77 can be fixed to the L-shaped support plate 73 by the fourth screw, so that the support plate 77 is in a fixed state to provide safe and stable support for the laser displacement sensor 1. This prevents the support plate 77 from shaking on the L-shaped support plate 73 when the linear slide bar 72 slides on the T-shaped linear bar 71, which is elastically supported by the spring member 76. This would affect the firmness and stability of the laser displacement sensor 1 fixed on the bending plate 5 by the radial push assembly 7.

[0099] When it is necessary to install the verticality calibration unit 2 onto the L-shaped support plate 73, first insert the fourth screw with the shorter plum blossom handle into the through hole of the verticality calibration unit 2, then place the verticality calibration unit 2 onto the support plate 77, then press the fourth screw on the verticality calibration unit 2 so that the bottom of the screw is aligned with the first threaded hole 78, then twist the fourth screw so that its thread is connected to the first threaded hole 78. When the bottom end of the screw is flush with the bottom of the first threaded hole 78, stop twisting the fourth screw so that the verticality calibration unit 2 is installed onto the support plate 77 only through the fourth screw.

[0100] When the linear slider 72 moves along the T-shaped linear bar 71, causing the verticality calibration unit 2 mounted on the support plate 77 to face the shaft 10, and the semi-circular groove 81 on the verticality calibration unit 2 is in contact with the shaft 10, if the shaft 10 is tilted at this time, the moving verticality calibration unit 2 will first cause a portion of the groove wall of the semi-circular groove 81 to contact the shaft 10. Then, the operator continues to push the linear slider 72, and the moving thrust of the linear slider 72 will act on the verticality calibration unit 2 through the L-shaped support plate 73, the spring 76, and the support plate 77, thus ensuring the verticality... The semicircular groove 81 on the calibration unit 2 continues to be in contact with the shaft 10. Since the support plate 77 is elastically supported on the horizontal plate of the L-shaped support plate 73 by the spring 76, the continued movement of the verticality calibration unit 2 will cause it to tilt to a certain extent. For example, the upper part of the groove of the semicircular groove 81 contacts the shaft 10 first. Then, as the verticality calibration unit 2 continues to move, it will tilt backward so that the groove of the semicircular groove 81 is fully in contact with the shaft 10. This facilitates accurate detection and processing of the shaft 10 in different tilt states.

[0101] See Figure 9 and Figure 10 As shown, the verticality calibration unit 2 includes a protective box 8 installed outside the tilt sensor, a wire hole opened on the wall of the protective box 8, and a semi-circular groove 81 opened on the vertical side wall of the protective box 8; wherein, both the protective box 8 and the laser displacement sensor 1 are provided with through holes for the fourth screw to pass through.

[0102] It should be noted that: the tilt sensor is installed on the L-shaped support plate 73 through the protective box 8. The wall surface of the protective box 8 near the center line of the dissolution cup 9 has a semi-circular groove 81, which makes the vertical wall surface of the protective box 8 fit accurately with the shaft 10. This allows the protective box 8 to not only protect the tilt sensor, but also eliminates the need to open the semi-circular groove 81 on the outer wall of the tilt sensor body, thus preventing damage to the outer wall of the tilt sensor body. The through holes opened on the protective box 8 and the laser displacement sensor 1 facilitate the passage of screws, thus making it easy to install them on the support plate 77.

[0103] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0104] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A dissolution meter shaft calibration device, comprising a laser displacement sensor for calibrating the shaft of the dissolution meter and a perpendicularity calibration unit; characterized in that, Also includes: The base body is detachably installed at the mouth of the dissolution cup via multiple sets of limiting and fastening components; The bent plate is installed on the base body; The power unit, mounted on the bending plate and cooperating with the base body, is used to drive the bending plate to rotate circumferentially around the mouth of the dissolution cup; And a radial pushing assembly for mounting a laser displacement sensor or verticality calibration unit on a bending plate and for pushing the laser displacement sensor or verticality calibration unit to move in the radial direction of the dissolution cup.

2. The dissolution meter shaft calibration device according to claim 1, characterized in that, Each set of limiting fastening components includes a bottom support plate installed on the top boss of the dissolution cup, an arc plate placed on the lower surface of the bottom support plate and located inside the dissolution cup, a square frame seat placed on the lower surface of the bottom support plate and located outside the dissolution cup, a clamping block movably placed inside the square frame seat for clamping onto the boss, and a first screw threaded to the square frame seat for driving the clamping block to move. The bottom support plate and the arc plate have rubber layers on the wall surfaces that fit against the dissolution cup.

3. The dissolution meter shaft calibration device according to claim 2, characterized in that, The base body includes: The arc-shaped strip is symmetrically mounted on the upper surface of the boss via two sets of bottom support plates; The square holes are formed at both ends of the curved strip; The arc-shaped connecting strip is movably installed at both ends in two symmetrical, opposite mating square holes; Countersunk hole, which is formed through the top surface of the mating square hole; The locking hole is located on the bottom surface of the mating square hole and corresponds to the countersunk hole; And a locking bolt, wherein the locking bolt is movably placed in the countersunk hole, and the thread of the locking bolt passes through the through hole opened on the arc-shaped connecting strip and is threadedly connected to the locking hole; The outer ring surface of the mating square hole is provided with a mating notch, and the height of the mating notch is the same as the height of the mating square hole.

4. The dissolution meter shaft calibration device according to claim 3, characterized in that, The outer ring surface of the arc-shaped strip away from the docking notch is formed with long teeth, and the outer wall surface of the docking notch is symmetrically provided with short teeth at the top and bottom; The outer ring surface of the arc-shaped connecting strip is formed with an arc-shaped protrusion that matches the mating notch, and the outer ring surface of the arc-shaped protrusion is formed with a central tooth. The spacing between two adjacent short teeth, middle teeth, and long teeth is the same, and the length of the middle tooth is the same as the distance between the upper and lower short teeth. Furthermore, the shape in which the middle tooth aligns with the upper and lower short teeth is the same as the shape of the long tooth. The power assembly includes a motor mounted on a bending plate and gears connected to the motor output shaft; wherein the gears are engaged with short teeth, medium teeth and long teeth for transmission.

5. The dissolution meter shaft calibration device according to claim 4, characterized in that, The power assembly also includes a T-shaped guide groove formed on the inner surface of the arc-shaped strip, a T-shaped slide bar movably installed in the T-shaped guide groove, and a second screw connecting the T-shaped slide bar and the vertical plate of the bending plate.

6. The dissolution meter shaft calibration device according to claim 5, characterized in that, The radial pushing assembly includes a T-shaped straight bar mounted on a horizontal plate of the bending plate, a linear slide bar movably sleeved on the T-shaped straight bar, and an L-shaped support plate mounted on the linear slide bar for mounting a laser displacement sensor or a verticality calibration unit. The linear slider has a T-shaped cavity that mates with the T-shaped linear bar. The end of the T-shaped cavity facing the shaft is open, while the other end is closed. The top wall of the T-shaped cavity is provided with an adjustment slot for the third screw to move. When the bending plate is installed on the base body, the T-shaped straight bar is oriented towards the center line of the dissolution cup.

7. The dissolution meter shaft calibration device according to claim 6, characterized in that, The radial pushing assembly also includes a spring mounted on the horizontal plate of the L-shaped support plate, a support plate mounted on the top of the spring, a first threaded hole opened on the support plate and aligned with the spring, and a second threaded hole opened on the horizontal plate of the L-shaped support plate and aligned with the first threaded hole. When the verticality calibration unit is mounted on the support plate, it is connected to the first threaded hole through the fourth screw; When the laser displacement sensor is mounted on the support plate, it is connected to the second threaded hole via a fourth screw.

8. The dissolution meter shaft calibration device according to claim 7, characterized in that, The verticality calibration unit includes a protective box installed outside the tilt sensor, a wire hole opened on the wall of the protective box, and a semi-circular groove opened on the vertical side wall of the protective box. Both the protective box and the laser displacement sensor have through holes for the fourth screw to pass through.

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