A laser drilling and positioning apparatus for coating a controlled release tablet

Abstract

The application relates to the punching technology field of controlled-release tablets, and discloses a laser punching positioning equipment for the coating film of a controlled-release tablet, which comprises a mounting frame, a storage box and a laser punching device, the outer surface of the mounting frame is rotationally provided with a rotating disc, the inside of the rotating disc is provided with a mounting plate, the outer surface of the mounting plate is provided with a mounting groove for positioning the controlled-release tablet, the outer surface of the rotating disc is provided with a sealing structure, the sealing structure comprises: a sealing ring, an operation notch, the sealing ring is arranged around the outer surface of the mounting plate, a sealing channel is formed between the sealing ring and the mounting plate, the controlled-release tablet in the storage box of the mounting frame falls into the inside of the mounting groove accurately, the sealing ring and the mounting plate can form a sealing area on the outer surface of the rotating disc, the controlled-release tablet is transported in the sealing area, the contact between the controlled-release tablet and air is reduced, the oxidation reaction is reduced, the quality of the medicine during heat treatment and punching is improved, and therefore the stability of the tablet quality is improved.

Description

Technical Field

[0001] This invention relates to the field of controlled-release tablet perforation technology, specifically to a laser perforation and positioning device for controlled-release tablet coating films. Background Technology

[0002] Oral osmotic pump-type controlled-release formulations rely on osmotic pressure to achieve a constant rate of drug release, maintaining stable blood drug concentrations for extended periods. This effectively avoids the drawbacks of conventional immediate-release formulations, such as large fluctuations in blood drug concentration peaks and troughs and a higher risk of adverse reactions, making it the mainstream formulation for long-acting oral medications. The core structure of an osmotic pump-controlled-release tablet consists of a tablet core and an outer semi-permeable coating membrane. This semi-permeable membrane allows water molecules to permeate into the tablet core but blocks drug diffusion. Therefore, heat treatment is necessary on the surface of the coating membrane, and precise drug release pores are created on the outer surface of the coating membrane using a laser drilling device. These pores serve as the sole channel for drug release, and the accuracy of the pore size and position directly determines the drug release rate, making it a critical process node for ensuring consistent formulation efficacy.

[0003] Patent publication number CN216730131U discloses a fully automatic laser drilling machine for controlled-release tablets, including a feeding mechanism, a conveying mechanism, a laser drilling mechanism, a visual inspection mechanism, and a rejection mechanism. The feeding mechanism includes a feeding hopper, which is connected to slides on both sides. Each slide is equipped with a sorting mechanism, which includes a color recognition probe and a pusher. Conveying mechanisms are respectively located below the slides on both sides, and the laser drilling mechanisms are located on the conveying mechanisms on both sides, respectively, at the upper and lower sides of the conveying mechanisms. A receiving box is provided at the end of the conveying mechanism. In this invention, by setting up a feeding mechanism, the controlled-release tablets are divided into two production lines, avoiding flipping and saving processing time. Then, by setting up a sorting mechanism, the controlled-release tablets are sorted, achieving the purpose of efficient processing and improving production efficiency. By dividing the controlled-release tablets into two production lines for sorting, production efficiency is improved. However, the device still has the following defects during use. First, during the perforation process of the existing controlled-release tablet positioning device, the controlled-release tablet is exposed to the air for a long time. Oxygen in the air continuously enters the semi-permeable membrane and reacts with the drug, causing the drug to oxidize and deteriorate, resulting in unstable drug quality and reduced efficacy. Secondly, during the storage of existing controlled-release tablets, the stacked tablets rub against each other to form powder, which floats in the laser drilling area, affecting the accuracy and efficiency of laser drilling. Finally, during the feeding process, the existing controlled-release tablets may get stuck, preventing them from accurately entering the positioning device and causing the positioning device to be unloaded, thus affecting the drilling efficiency. Summary of the Invention

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a laser drilling and positioning device for controlled-release tablet coating films. It has the advantages of sealed transportation, anti-jamming, and collection of tablet debris, solving the problems of air reacting with tablets, resulting in substandard tablet quality and powder affecting drilling accuracy.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: A laser drilling and positioning device for controlled-release tablet coating films includes a mounting frame, a storage tank, and a laser drilling device. A turntable is rotatably mounted on the outer surface of the mounting frame, and a mounting plate is disposed inside the turntable. The outer surface of the mounting plate has multiple mounting slots for positioning the controlled-release tablets. A sealing structure is provided on the outer surface of the turntable, and the sealing structure includes: The sealing ring is rotatably mounted on the outer surface of the mounting plate and has a C-groove. Operating slots are formed on the outer surface of the turntable, and multiple operating slots are respectively set to correspond to the mounting slots; The sealing ring surrounds the outer surface of the mounting plate, forming a sealed channel between the sealing ring and the mounting plate. The controlled-release tablet inside the storage box falls precisely into the interior of the mounting groove. The rotation of the mounting plate drives the controlled-release tablet to be transported inside the sealed channel, reducing the contact between the controlled-release tablet and the air.

[0006] Preferably, the mounting plate has an anti-jamming structure inside, the anti-jamming structure comprising: A collection funnel is fixedly installed on the outer surface of the mounting plate and has a sinking groove; The actuating block is slidably installed on the outer surface of the collecting funnel and is set in accordance with the sinking trough; The first reset spring is fixedly installed on the outer surface of the collecting funnel and is fixedly connected to the bottom end face of the actuating block; The mounting plate has multiple spring-loaded outlets on its outer surface. When the mounting plate rotates, it drives the actuating block to rotate. When the actuating block contacts the outer surface of the storage box, it compresses the first return spring to store elastic energy. When the actuating block aligns with the discharge port of the storage box, the first return spring pushes the actuating block toward the discharge port of the storage box, shaking the control-release plate at the discharge port of the storage box to prevent the control-release plate from getting stuck at the discharge port of the storage box.

[0007] Preferably, the mounting plate is internally provided with a dust collection mechanism, the dust collection mechanism comprising: The second dust suction port is located on the outer surface of the mounting plate; A mesh screen is fixedly installed on the outer surface of the mounting plate and is positioned corresponding to the second dust suction port; The first suction port is located on the outer surface of the collection funnel and slides against the bottom end face of the actuating block; The outer surface of the collecting funnel is provided with a collecting structure, which can adsorb the air inside the collecting funnel, so that a negative pressure space is formed inside the collecting funnel. The first and second dust suction ports adsorb the tablet fragments falling from the storage box and collect the tablet fragments inside the collecting funnel.

[0008] Preferably, the mounting groove is provided with a positioning structure, the positioning structure including: The flexible airbag is fixedly installed inside the mounting groove and has a protrusion. Connect the air tube and fix it between the two collection funnels; The suction cup is fixedly connected to one end of the connecting air tube and installed on the end face of the flexible airbag; The other end of the connecting tube is connected to a vacuum generator. When the controlled-release tablet falls into the installation slot, the vacuum generator is activated and the suction cup can adsorb the controlled-release tablet, preventing it from shaking inside the installation slot.

[0009] Preferably, the outer surface of the sealing ring is provided with a detection groove, the outer surface of the detection groove is provided with an air blowing pipe, a detection device is provided on one side of the air blowing pipe, and a lighting lamp is provided on one side of the detection device. When the mounting plate moves the controlled-release tablet to the position of the air blowing pipe, the air blowing pipe can blow off the tablet fragments adhering to the surface of the controlled-release tablet, and the lighting lamp provides illumination, which helps to improve the accuracy of the detection device in detecting the tablet position.

[0010] Preferably, the outer surface of the turntable is provided with a clearance structure, the clearance structure comprising: The operating slot is located on the outer surface of the turntable; The slide plate is slidably mounted on the outer surface of the turntable. The abutment roller is fixedly installed on the outer surface of the slide plate; The irregularly shaped plate is fixedly installed on the end face of the mounting frame and has an arc-shaped abutment surface. The irregularly shaped plate slides against the abutment roller. When the turntable rotates, the slide plate rotates synchronously and drives the abutment roller to slide into contact with the irregular plate. During the contact, the abutment roller is lifted by force and drives the slide plate to slide upward, so that the control release plate inside the turntable can be exposed through the operating slot, which facilitates the laser drilling device to perform drilling operation.

[0011] Preferably, the outer surface of the sealing ring is provided with a discharge groove, and the inner wall of the sealing ring is provided with a baffle. The baffle is located between the discharge groove and the storage box, and the baffle slides against the actuating block. During the rotation of the mounting plate, when the actuating block moves to the position of the baffle, one end of the actuating block is squeezed by the baffle and slides towards the first return spring, squeezing the first return spring. This causes the bottom end of the actuating block to abut against the end face of the first dust suction port, blocking the negative pressure airflow at the first dust suction port and reducing energy loss.

[0012] Preferably, one side of the discharge trough is provided with an inclined portion, which is inclined towards the center.

[0013] Preferably, the collection structure includes: A collection chamber is fixedly installed inside the collection funnel, with one end of the collection chamber extending outward through the mounting plate; A connecting pipe is rotatably mounted on the outer surface of the collection chamber, and the collection chamber is in communication with the interior of the connecting pipe; The dust outlet is located on the outer surface of the connecting tube and is connected to the suction end of the external vacuum cleaner.

[0014] Preferably, the avoidance structure further includes a fixing block fixedly disposed on the outer surface of the turntable, the fixing block being slidably connected to the slide plate, one end of the slide plate being provided with a cover plate, the cover plate being slidably abutting against the inner wall of the sealing ring, and a second return spring being provided on the bottom end face of the cover plate.

[0015] (III) Beneficial Effects Compared with the prior art, the present invention provides a laser drilling and positioning device for controlled-release tablet coating films, which has the following beneficial effects: 1. The laser drilling and positioning device for the controlled-release tablet coating film, by setting a sealing ring, a mounting plate, and an avoidance structure, can form a sealed area on the outer surface of the turntable. The controlled-release tablet is transported within the sealed area, reducing the contact between the controlled-release tablet and air, reducing oxidation reaction, and improving the stability of drug quality. At the same time, by setting an avoidance structure, the sealed cavity can be automatically opened when the controlled-release tablet reaches the drilling position, so that the laser drilling device can accurately drill the controlled-release tablet, improving work efficiency. 2. The laser drilling and positioning equipment for the controlled-release tablet coating film, by setting an air blowing pipe on the outer surface of the sealing ring and setting a dust collection funnel and other dust-collecting structures inside the mounting plate, can clean the outer surface of the controlled-release tablets during the transfer and transportation process, preventing controlled-release agent powder from adhering to the outer surface of the controlled-release tablets, improving laser drilling accuracy, and enhancing heat treatment effect. Furthermore, in conjunction with the dust collection structure, it can collect fallen powder, preventing powder from flying and causing secondary pollution. The entire process is completed within a sealed area, avoiding powder flying out and affecting personnel safety. 3. The laser drilling and positioning device for the controlled-release tablet coating film, by setting up an installation groove, a flexible airbag, a suction cup, and a connecting air tube, can adsorb the controlled-release tablet that falls into the installation groove onto the outer surface of the flexible airbag, preventing the controlled-release tablet from shifting during transportation. Furthermore, by setting protrusions on the outer surface of the flexible airbag, after the controlled-release tablet is adsorbed by the suction cup, the flexible airbag will bend and deform due to the compression of the controlled-release tablet, so that the protrusions on the outer surface of the flexible airbag tightly hold the controlled-release tablet, further improving the stability of the controlled-release tablet and thus improving the accuracy of laser drilling. 4. The laser drilling and positioning device for the controlled-release tablet coating film, by setting up a toggle block and a first reset spring, can move the toggle block towards the discharge port of the storage box during the transfer of the controlled-release tablet on the mounting plate, and push the controlled-release tablet at the discharge port of the storage box to prevent the controlled-release tablet from getting stuck, thereby improving the discharge efficiency and the overall stability of the device. 5. The laser drilling and positioning device for the controlled-release tablet coating film, by setting a baffle on the inner wall of the sealing ring, allows the actuating block to slide towards the center of the circle when it rotates to the baffle, blocking the first dust suction port, thereby reducing the adsorption area, reducing energy loss, and reducing resource waste. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention.

[0017] Figure 2 This is a schematic diagram of the turntable.

[0018] Figure 3 This is a schematic diagram of the internal structure of the mounting plate.

[0019] Figure 4 A schematic diagram of the structure of the collection funnel.

[0020] Figure 5 This is a structural diagram of the mounting plate.

[0021] Figure 6 This is a schematic diagram of the sealing ring.

[0022] Figure 7 This is a front view of the present invention.

[0023] Figure 8 for Figure 7 Planar sectional view at point AA.

[0024] Figure 9 This is a schematic diagram of the skateboard's structure.

[0025] Figure 10 This is a schematic diagram of the toothed ring structure.

[0026] In the diagram: 10. Mounting frame; 11. Storage box; 12. Turntable; 13. Sealing ring; 14. Mounting plate; 15. Mounting groove; 16. Flexible airbag; 17. Suction cup; 18. Collection funnel; 19. Connecting air pipe; 20. Air valve; 21. Rotary joint; 22. Actuating block; 23. Sealing gasket; 24. First return spring; 25. First dust suction port; 26. Collection chamber; 27. Connecting port; 28. Second dust suction port; 29. ​​Partition net; 30. Sealing channel; 31. Detection slot; 32. Drilling slot; 33. Discharge slot; 34. Inclined part; 35. Baffle; 36. Operating slot; 37. Fixing block; 38. Slide plate; 39. Cover plate; 40. Second return spring; 41. Abutment roller; 42. Irregular plate; 43. Laser drilling device; 44. Detection device; 45. Lighting lamp; 46. Air blowing pipe; 47. Gear ring; 48. Gear; 49. Connecting pipe; 50. Dust discharge port; 51. Flange; 52. Bearing. Detailed Implementation

[0027] 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.

[0028] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0029] In addition, a fixed connection refers to a connection in which parts or components are fixed and there is no relative movement; a transmission connection refers to a connection in which mechanical motion or torque is transmitted to other working parts through a transmission component; a sliding connection refers to a connection in which two objects are in contact but not fixed and can slide relative to each other; and a rotational connection refers to a connection in which two objects are in contact but not fixed and can rotate relative to each other.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] Example 1: This embodiment provides a laser drilling and positioning device for controlled-release tablet coating films, which has the following technical features.

[0032] Please see Figure 1 The laser drilling and positioning equipment for the controlled-release tablet coating film includes a mounting frame 10, a storage tank 11, and a laser drilling device 43. The laser drilling device 43 is an important device in the controlled-release tablet heat treatment process. It mainly uses a high-energy, high-density monochromatic laser beam to generate a thermal effect on the outer surface of the controlled-release tablet, impacting and removing the contact layer on the surface of the controlled-release tablet to achieve a perforation effect. This is a non-contact precision heat processing method. The storage tank 11 is installed above the mounting frame 10, and the controlled-release tablets are stacked inside the storage tank 11. The bottom end face of the storage tank 11 has a funnel-shaped discharge port. The outer surface of the storage tank 11 is equipped with a vibration device to assist in the discharge. The vibration device and the discharge funnel are conventionally matched and will not be elaborated on in this article. It is mainly used to output the controlled-release tablets and prevent them from accumulating and getting stuck inside the storage tank 11.

[0033] Further reference Figures 2-3 Before punching the controlled-release tablets, they need to be positioned and precisely transferred to the punching area. Therefore, a turntable 12 is rotatably mounted on the outer surface of the mounting frame 10, and a mounting plate 14 is installed inside the turntable 12. The outer surface of the mounting plate 14 is provided with multiple mounting slots 15 for positioning the controlled-release tablets. The storage box 11 feeds the controlled-release tablets into the mounting slots 15 through the feeding port, and then transfers them to the punching area via the rotating mounting plate 14. During the transfer, to prevent the tablets from colliding and shattering, the stability of the tablets during the transfer process needs to be improved. Therefore, in the mounting frame 10... The interior of the groove 15 is provided with a positioning structure, which includes a flexible airbag 16 fixedly installed inside the groove 15, and the outer surface of the flexible airbag 16 has a protrusion. The interior of the mounting plate 14 is provided with a plurality of collection funnels 18, and a connecting air pipe 19 is fixedly installed between two collection funnels 18. An air valve 20 is installed on the outer surface of the connecting air pipe 19. A suction cup 17 is fixedly installed at one end of the connecting air pipe 19 and is installed on the end face of the flexible airbag 16. A rotary joint 21 is provided at the other end of the connecting air pipe 19 and is connected to an external vacuum generator.

[0034] Specifically, when the controlled-release tablet falls into the mounting groove 15, the vacuum generator uses the rotary joint 21 to draw in the air inside the connecting tube 19, causing the connecting tube 19 to hold the controlled-release tablet in place via the suction cup 17, thus initially positioning the controlled-release tablet. After the controlled-release tablet is held in place, the downward pressure of the tablet causes the flexible airbag 16 to bend and deform, causing the two protrusions on the outer surface of the flexible airbag 16 to tightly hold the controlled-release tablet, thereby further fixing the position of the controlled-release tablet and improving its stability inside the mounting groove 15.

[0035] Further reference Figure 1 and Figure 10 After the controlled-release tablet is fixed inside the mounting slot 15, it needs to be transferred to the detection area. A toothed ring 47 is provided on the outer surface of the turntable 12. A gear 48 is rotatably provided on one side of the toothed ring 47. The toothed ring 47 and the gear 48 are meshed and connected. A drive motor is provided on one side of the gear 48. The output shaft of the drive motor is fixedly connected to the gear 48. The drive motor is fixedly installed on the outer surface of the mounting frame 10. By starting the drive motor, the gear 48 can be driven to rotate, which in turn drives the toothed ring 47 to rotate. The rotating toothed ring 47 drives the turntable 12 to rotate, which in turn drives the mounting plate 14 to rotate. The mounting plate 14 then drives the mounting slot 15 and the controlled-release tablet inside the mounting slot 15 to be transferred, allowing the controlled-release tablet to be transferred in multiple working areas, thus improving work efficiency.

[0036] Further reference Figures 1-4 During the storage of controlled-release tablets inside the storage box 11, the tablets may become stuck at the discharge port of the storage box 11 due to accumulation. Therefore, an anti-jamming structure is provided inside the mounting plate 14. The anti-jamming structure includes a collection funnel 18. A sinking groove is provided on the outer surface of the collection funnel 18. A first reset spring 24 is provided inside the sinking groove. A toggle block 22 is provided at one end of the first reset spring 24. Two auxiliary plates are provided on the bottom end face of the toggle block 22. The auxiliary plates are slidably connected to the sinking groove. When the mounting plate 14 rotates, it drives the collecting funnel 18 to rotate, which in turn drives the actuating block 22 to rotate. When the actuating block 22 contacts the outer surface of the storage box 11, it compresses the first return spring 24 to store elastic energy. When the actuating block 22 corresponds to the discharge port of the storage box 11, the first return spring 24 recovers its elastic potential energy and pushes the actuating block 22 into the discharge port of the storage box 11, pushing the control-release plate at the discharge port of the storage box 11 to prevent the control-release plate from getting stuck at the discharge port of the storage box 11, thereby improving the stability of continuous feeding.

[0037] Further reference Figures 2-5When existing positioning devices position controlled-release tablets, the tablets are exposed to air, causing them to be in continuous contact with humid air. Oxygen and moisture in the air can accelerate the oxidation reaction on the tablet surface or cause it to absorb moisture and deteriorate, affecting the quality of the controlled-release tablets. Therefore, it is necessary to seal and protect the controlled-release tablets during the transfer process. A sealing structure is provided on the outer surface of the turntable 12. The sealing structure includes a sealing ring 13 rotatably mounted on the outer surface of the turntable 12. The sealing ring 13 is fixedly connected to the mounting frame 10 through a fixed bracket, and the inner wall of the sealing ring 13 has a C-shaped groove. The outer surface of the turntable 12 is provided with an operating slot 36, and multiple operating slots 36 are respectively provided corresponding to the mounting slots 15. The sealing ring 13 is arranged in a ring around the outer surface of the mounting plate 14. The C-shaped groove of the sealing ring 13 and the mounting plate 14 form a sealing channel 30. After the controlled-release tablet inside the mounting slot 15 is fixed, the mounting plate 14 rotates to drive the mounting slot 15 into the sealing channel 30, so that the controlled-release tablet is isolated from the outside air, preventing the outside air from contaminating the controlled-release tablet and ensuring the quality of the medicine.

[0038] Further reference Figures 3-8 To improve the cleanliness and detection accuracy of the controlled-release tablets, a dust collection mechanism is installed inside the mounting plate 14. This mechanism consists of a second dust collection port 28, a mesh screen 29, and a first dust collection port 25. The second dust collection port 28 is located on the outer surface of the mounting plate 14. A mesh screen 29 is positioned above the second dust collection port 28 on the outer surface of the mounting plate 14. The mesh screen 29 prevents the controlled-release tablets inside the storage bin 11 from becoming stuck inside the second dust collection port 28, thereby improving the stability of the device. The first dust collection port 25 is located on the outer surface of the collection funnel 18. A collection structure is provided on the outer surface of the collection funnel 18, including a collection chamber 26. The collection chamber 26 is fixedly installed inside the collection funnel 18 and communicates with the interior of the second dust collection port 28. The outer surface of the collection chamber 26 is provided with... The connection port 27 is provided. One end of the collection chamber 26 extends outward through the mounting plate 14. A connecting pipe 49 is rotatably provided on the outer surface of the extended end of the collection chamber 26. The connecting pipe 49 is connected to the collection chamber 26 through the connection port 27. A bearing 52 is provided between the connecting pipe 49 and the collection chamber 26. The bearing 52 is used to enable the connecting pipe 49 and the collection chamber 26 to rotate independently to ensure that the dust suction channel remains connected during rotation. A dust discharge port 50 is provided on the outer surface of the connecting pipe 49. The dust discharge port 50 is connected to the suction end of an external vacuum cleaner. A flange 51 is provided on the outer surface of the connecting pipe 49. The flange 51 is fixedly connected to the mounting frame 10. By providing the flange 51, the connecting pipe 49 and the turntable 12 can be supported, so that the turntable 12 is rotatably connected to one side of the mounting frame 10.

[0039] Specifically, by activating an external vacuum cleaner, the vacuum cleaner draws in air from the connecting pipe 49 through its suction end, creating a negative pressure inside the connecting pipe 49. This negative pressure, in turn, creates a negative pressure inside the collection funnel 18. The collection funnel 18 draws in tablet fragments from the discharge port of the storage bin 11 through the first suction port 25 and the second suction port 28, and then into the internal channel of the collection chamber 26 via the collection funnel 18. Finally, the fragments are discharged to the external vacuum cleaner through the dust outlet 50, achieving centralized collection and processing of tablet fragments. This negative pressure adsorption process is synchronized with the rotation of the mounting plate 14, ensuring continuous removal of fragments throughout the entire controlled-release tablet transfer cycle, preventing impurities from affecting subsequent testing or packaging quality.

[0040] Further reference Figures 1-3 To avoid interference from dust and debris during visual inspection of controlled-release tablets, an air blowing device is installed near the inspection station. The outer surface of the sealing ring 13 is provided with an inspection slot 31, and the outer surface of the inspection slot 31 is provided with an air blowing pipe 46. An inspection device 44 is installed on one side of the air blowing pipe 46, and an illumination lamp 45 is installed on one side of the inspection device 44. By setting the illumination lamp 45, the lighting conditions in the inspection area can be improved, and the accuracy of the inspection device 44 in detecting the tablet position can be improved. At the same time, by setting the air blowing pipe 46, the floating dust and debris on the surface of the controlled-release tablet can be blown away before inspection. The air blowing pipe 46 is set at an angle of 15°-45° to optimize the airflow coverage and avoid impact on the tablet.

[0041] Further reference Figures 7-9After the controlled-release tablet is tested, it needs to be transferred to the perforation area. The outer surface of the sealing ring 13 has a perforation slot 32, and a laser perforation device 43 is installed on one side of the perforation slot 32. The laser perforation device 43 can perform perforation operations on the outer surface of the controlled-release tablet. However, since the controlled-release tablet is transferred within the closed sealing channel 30, a specific avoidance structure is needed to temporarily expose the controlled-release tablet so that the laser perforation device 43 can accurately perform the perforation operation. The clearance structure includes an operating slot 36, which is formed on the outer surface of the turntable 12. A fixing block 37 is provided on one side of the operating slot 36 on the outer surface of the turntable 12. A sliding plate 38 is slidably disposed inside the fixing block 37. An abutment roller 41 is provided on the outer surface of the sliding plate 38. A shaped plate 42 is provided on the end face of the mounting frame 10, and the end face of the shaped plate 42 has an arc-shaped abutment surface. The shaped plate 42 slidably abuts against the abutment roller 41. When the turntable 12 rotates, the sliding plate 38 on the outer surface rotates synchronously, driving the abutment roller 41 to rotate. When the abutment roller 41 rotates... When the 1-shaped plate 42 slides into contact, during the contact period, the abutment roller 41 is forced to disengage from its original rotation angle and slides upward along the fixed block 37, while simultaneously driving the slide plate 38 to slide upward. One end of the slide plate 38 is provided with a cover plate 39, which causes the slide plate 38 to drive the cover plate 39 to slide upward. The cover plate 39 disengages from the cover of the operating slot 36, allowing the control-release tablet inside the turntable 12 to leak out through the operating slot 36. At this time, the laser drilling device 43 is activated to perform the drilling operation. With this setting, the drilling operation can be performed on the outer surface of the control-release tablet under the premise of brief contact with air.

[0042] Further reference Figure 3 and Figure 6 After the drilling operation is completed, the controlled-release tablets need to be transferred to the next process. Therefore, a discharge slot 33 is provided on the outer surface of the sealing ring 13. Below the discharge slot 33, an inclined part 34 is provided on the inner wall of the sealing ring 13, and the inclined part 34 is inclined towards the center. After the controlled-release tablets are drilled, the negative pressure inside the connecting air pipe 19 is opened and closed by the air valve 20 to fix the controlled-release tablets, so that the controlled-release tablets are discharged outward from the discharge slot 33, completing the feeding. By setting the inclined part 34, the controlled-release tablets can be prevented from falling back into the sealing channel 30 and getting stuck, thereby improving the stability of the device operation.

[0043] Further reference Figure 3 and Figure 6After the controlled-release tablets are discharged through the discharge port 33, the distance from the discharge port 33 to the discharge port of the storage box 11 is in an unloaded area. The first dust suction port 25 in the unloaded area continuously absorbs air, resulting in energy waste. Therefore, in order to reduce energy waste in the unloaded area, a baffle 35 is provided on the inner wall of the sealing ring 13 above the discharge port 33. The baffle 35 slides against the actuating block 22. During the rotation of the actuating block 22 driven by the mounting plate 14, when the actuating block 22 moves to the position of the baffle 35, the mounting plate 14 continues to drive the actuating block 22 to rotate. However, because the sealing ring 13 is fixedly connected to the mounting frame 10, one end of the actuating block 22 is affected by the baffle. The pressure of the baffle 35 slides towards the first return spring 24 and presses the first return spring 24, so that the bottom end of the actuating block 22 abuts against the end face of the first dust suction port 25. The bottom end face of the actuating block 22 is provided with a sealing gasket 23, which blocks the negative pressure airflow at the first dust suction port 25, thereby reducing energy loss in the idle area. During the contact between the actuating block 22 and the baffle 35, the first return spring 24 will elastically store energy. When the actuating block 22 rotates to the discharge port of the storage box 11, the first return spring 24 will recover due to the elastic storage energy and push the actuating block 22 into the discharge port of the storage box 11, thereby preventing the discharge port of the storage box 11 from getting stuck.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser drilling and positioning device for controlled-release tablet coating films, comprising a mounting frame (10), a storage tank (11), and a laser drilling device (43), characterized in that, The outer surface of the mounting frame (10) is rotatably provided with a turntable (12), the interior of the turntable (12) is provided with a mounting plate (14), the outer surface of the mounting plate (14) is provided with a plurality of mounting grooves (15) for positioning controlled-release tablets, and the outer surface of the turntable (12) is provided with a sealing structure, the sealing structure including: A sealing ring (13) is rotatably mounted on the outer surface of the mounting plate (14) and has a C-groove; Operating slots (36) are provided on the outer surface of the turntable (12), and multiple operating slots (36) are respectively provided corresponding to the mounting slots (15); The sealing ring (13) surrounds the outer surface of the mounting plate (14), and a sealing channel (30) is formed between the sealing ring (13) and the mounting plate (14). The controlled-release tablet inside the storage box (11) falls precisely into the interior of the mounting groove (15). The controlled-release tablet is transported inside the sealing channel (30) by the rotation of the mounting plate (14), reducing the contact between the controlled-release tablet and the air.

2. The laser drilling and positioning device for controlled-release tablet coating film according to claim 1, characterized in that, The mounting plate (14) is provided with an anti-jamming structure inside, the anti-jamming structure including: A collection funnel (18) is fixedly installed on the outer surface of the mounting plate (14) and has a sinking groove; The actuating block (22) is slidably installed on the outer surface of the collecting funnel (18) and is set in correspondence with the sinking trough; The first reset spring (24) is fixedly installed on the outer surface of the collecting funnel (18) and is fixedly connected to the bottom end face of the actuating block (22); The mounting plate (14) has multiple spring outlets on its outer surface. When the mounting plate (14) rotates, it can drive the actuating block (22) to rotate. When the actuating block (22) contacts the outer surface of the storage box (11), it will compress the first reset spring (24) to store elastic energy. When the actuating block (22) corresponds to the discharge port of the storage box (11), the first reset spring (24) pushes the actuating block (22) to move towards the discharge port of the storage box (11) and shakes the control-release plate at the discharge port of the storage box (11) to prevent the control-release plate from getting stuck at the discharge port of the storage box (11).

3. The laser drilling and positioning device for controlled-release tablet coating film according to claim 2, characterized in that, The mounting plate (14) is equipped with a dust collection mechanism, which includes: The second dust suction port (28) is located on the outer surface of the mounting plate (14); A mesh screen (29) is fixedly installed on the outer surface of the mounting plate (14) and is set in correspondence with the second dust suction port (28); The first suction port (25) is located on the outer surface of the collecting funnel (18) and slides against the bottom end face of the agitator (22); The outer surface of the collecting funnel (18) is provided with a collecting structure. The collecting structure can adsorb the air inside the collecting funnel (18), so that a negative pressure space is formed inside the collecting funnel (18). The first dust suction port (25) and the second dust suction port (28) adsorb the tablet fragments falling from the storage box (11) and collect the tablet fragments inside the collecting funnel (18).

4. The laser drilling and positioning device for controlled-release tablet coating film according to claim 2, characterized in that, The mounting slot (15) is provided with a positioning structure, the positioning structure including: A flexible airbag (16) is fixedly installed inside the mounting groove (15) and has a protrusion; Connect the air tube (19) and fix it between the two collecting funnels (18). The suction cup (17) is fixedly connected to one end of the connecting air tube (19) and installed on the end face of the flexible airbag (16); The other end of the connecting tube (19) is connected to the vacuum generator. When the controlled-release tablet falls into the installation groove (15), the vacuum generator is activated and the suction cup (17) can adsorb the controlled-release tablet to prevent it from shaking inside the installation groove (15).

5. The laser drilling and positioning device for controlled-release tablet coating film according to claim 1, characterized in that, The outer surface of the sealing ring (13) is provided with a detection groove (31), the outer surface of the detection groove (31) is provided with an air blowing pipe (46), a detection device (44) is provided on one side of the air blowing pipe (46), and a lighting lamp (45) is provided on one side of the detection device (44). When the mounting plate (14) moves the controlled-release tablet to the position of the blowing pipe (46), the blowing pipe (46) can blow off the tablet fragments adhering to the surface of the controlled-release tablet, and the lighting lamp (45) provides illumination, which helps to improve the accuracy of the detection device (44) in detecting the position of the tablet.

6. The laser drilling and positioning device for controlled-release tablet coating film according to claim 1, characterized in that, The outer surface of the turntable (12) is provided with a clearance structure, the clearance structure including: An operating slot (36) is provided on the outer surface of the turntable (12); The slide plate (38) is slidably mounted on the outer surface of the turntable (12); Abutting roller (41) is fixedly installed on the outer surface of the slide plate (38); The irregular plate (42) is fixedly installed on the end face of the mounting frame (10) and has an arc-shaped abutting surface. The irregular plate (42) slides against the abutting roller (41). When the turntable (12) rotates, the slide plate (38) rotates synchronously and drives the contact roller (41) to slide into contact with the irregular plate (42). During the contact, the contact roller (41) is lifted by force and drives the slide plate (38) to slide upward, so that the control-release plate inside the turntable (12) is exposed through the operation slot (36), which facilitates the laser drilling device (43) to perform drilling operation.

7. The laser drilling and positioning device for controlled-release tablet coating film according to claim 2, characterized in that, The outer surface of the sealing ring (13) is provided with a discharge slot (33), and a baffle (35) is provided on the inner wall of the sealing ring (13). The baffle (35) is located between the discharge slot (33) and the storage box (11), and the baffle (35) slides against the actuating block (22). During the rotation of the mounting plate (14), when the toggle block (22) moves to the position of the baffle (35), one end of the toggle block (22) is squeezed by the baffle (35) and slides towards the first return spring (24), squeezing the first return spring (24), so that one bottom end of the toggle block (22) abuts against the end face of the first dust suction port (25), blocking the negative pressure airflow at the first dust suction port (25) and reducing energy loss.

8. The laser drilling and positioning device for controlled-release tablet coating film according to claim 7, characterized in that, An inclined portion (34) is provided on one side of the discharge trough (33), and the inclined portion (34) is inclined toward the center.

9. The laser drilling and positioning device for controlled-release tablet coating film according to claim 3, characterized in that, The collection structure includes: The collection chamber (26) is fixedly installed inside the collection funnel (18), and one end of the collection chamber (26) extends outward through the mounting plate (14); A connecting pipe (49) is rotatably mounted on the outer surface of the collection chamber (26), and the collection chamber (26) is in communication with the interior of the connecting pipe (49); The dust outlet (50) is located on the outer surface of the connecting pipe (49) and is connected to the suction end of the external vacuum cleaner.

10. The laser drilling and positioning device for controlled-release tablet coating film according to claim 6, characterized in that, The avoidance structure also includes a fixing block (37) fixedly installed on the outer surface of the turntable (12). The fixing block (37) is slidably connected to the slide plate (38). One end of the slide plate (38) is provided with a cover plate (39). The cover plate (39) slides against the inner wall of the sealing ring (13). The bottom end face of the cover plate (39) is provided with a second return spring (40).

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