A sample collection device for tablet inspection

Abstract

This utility model discloses a sample collection device for tablet testing, including a base. A tablet conveyor is mounted on the upper part of the base. An adjustable collection component for collecting tablets from the conveyor is movably mounted on the upper part of the base. The collection component includes a servo motor that drives a rotating shaft. A fixed frame is mounted in the middle of the rotating shaft. Clamping arms for holding tablets are rotatably mounted on both sides of the fixed frame. A connecting plate is mounted at the bottom of the rotating shaft, below the fixed frame. Connecting arms are rotatably mounted on both sides of the connecting plate. One end of each connecting arm is rotatably connected to a clamping arm. By cooperating with each component of the collection component, the problem of existing equipment having a single sampling head and requiring frequent component replacement is effectively solved. This significantly reduces the tedious operation and human error of operators, improves the continuity and production efficiency of the production line when switching drug types, and has stronger versatility and practicality.

Description

Technical Field

[0001] This utility model relates to the field of pharmaceutical tablet testing technology, specifically a sample collection device for pharmaceutical tablet testing. Background Technology

[0002] In the pharmaceutical production quality control process, tablet sample collection is a preliminary step in the testing process, and its accuracy and standardization directly affect the drug quality assessment results. In actual production scenarios, pharmaceutical companies often need to produce tablets of different specifications and shapes simultaneously, such as round, oval, and irregularly shaped tablets.

[0003] However, current tablet sampling devices have a single sampling head design, which is only suitable for tablets of specific sizes or shapes. When the production line switches to produce different types of drugs, operators need to frequently change the sampling components, which is not only cumbersome and time-consuming, but also prone to human error due to component replacement, greatly reducing the continuity and efficiency of the production line. Therefore, there is a need for a sample collection device for tablet testing. Utility Model Content

[0004] The purpose of this invention is to provide a sample collection device for tablet testing. Through the adjustable collection components, the device can adaptively adjust the tablet clamping according to the tablet size, thereby solving the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A sample collection device for testing tablets includes a base, a tablet conveyor is mounted on the upper part of the base, and an adjustable collection component for collecting tablets from the conveyor is movably mounted on the upper part of the base. The acquisition component includes a servo motor that drives the rotating shaft to rotate. A fixed frame is installed in the middle of the rotating shaft. Clamping arms for holding tablets are rotatably installed on both sides of the fixed frame. A connecting plate is installed at the bottom of the rotating shaft below the fixed frame. Connecting arms are rotatably installed on both sides of the connecting plate. One end of each set of connecting arms is rotatably connected to the clamping arm.

[0006] Preferably, the fixing frame has symmetrical first rotating grooves on both sides, and each set of clamping arms is rotatably mounted inside the first rotating groove via a pin.

[0007] Preferably, the connecting plate has symmetrical second rotating grooves on both sides, and the two sets of clamping arms have symmetrical connecting holes in the middle. The two ends of each set of connecting arms are respectively connected to the middle of the corresponding second rotating groove and the inside of the connecting hole through pins.

[0008] Preferably, the clamping surfaces of the two sets of clamping arms are provided with elastic pads, and the sidewalls of each set of elastic pads that contact the tablet are provided with anti-slip textures.

[0009] Preferably, a fixed seat is installed on the upper part of the base on the side of the conveyor frame, a support frame is rotatably installed on the upper part of the fixed seat, and a stepper motor for driving the support frame to rotate is installed in the middle of the fixed seat.

[0010] Preferably, an electric push rod is installed through the middle of the support frame, and a fixing housing for fixing a servo motor is installed at the output end of the electric push rod.

[0011] Preferably, the servo motor is installed inside the fixed housing, and the side wall of the fixed housing has several sets of heat dissipation holes for the servo motor, and the rotating shaft extends through to the lower part of the fixed housing.

[0012] Preferably, a connecting sleeve is fitted around the outside of the rotating shaft, and the two ends of the connecting sleeve are respectively connected to the bottom of the fixed shell and the top of the fixed frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are: By incorporating an adjustable clamping arm linkage structure within the sampling assembly, a servo motor drives the rotating shaft to rotate, causing the connecting plate and connecting arm to move synchronously. This allows the clamping arms on both sides of the fixing frame to automatically adjust their opening angle according to the tablet specifications, eliminating the need to change sampling components for different tablet shapes. Through the coordinated operation of the various components of the sampling assembly, the problem of existing equipment requiring a single sampling head and frequent component replacements is effectively solved. This significantly reduces tedious operation and human error for operators, improves the continuity and efficiency of the production line when switching drug types, and offers greater versatility and practicality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the stepper motor mounting structure of this utility model; Figure 3 This is a schematic diagram of the servo motor mounting structure of this utility model; Figure 4 This is a schematic diagram of the bottom structure of the fixing frame of this utility model.

[0015] In the diagram: 1. Base; 2. Conveyor frame; 3. Acquisition component; 301. Servo motor; 302. Rotating shaft; 303. Fixing frame; 304. First rotating groove; 305. Clamping arm; 306. Connecting plate; 307. Second rotating groove; 308. Connecting hole; 309. Connecting arm; 310. Elastic pad; 311. Connecting sleeve; 4. Fixing seat; 5. Support frame; 6. Stepper motor; 7. Electric push rod; 8. Fixing shell; 9. Heat dissipation hole. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] This utility model provides: a sample collection device for testing pharmaceutical tablets, such as... Figures 1-4 As shown, the device includes a base 1, with a conveyor frame 2 for transporting tablets mounted on top of the base 1. An adjustable collection assembly 3 for collecting tablets from the conveyor frame 2 is movably mounted on the upper part of the base 1. The base 1 provides a stable mounting platform for the conveyor frame 2 and the collection assembly 3, ensuring the entire device remains stable during operation. The conveyor frame 2, mounted on the upper part of the base 1, carries and transports the tablets to be tested, allowing them to move to the collection area in an orderly manner. The collection assembly 3, movably mounted on the upper part of the base 1, is adjustable to accommodate tablets of different sizes, avoiding the problem of frequent component replacements required by traditional equipment due to the single sampling head.

[0018] The acquisition component 3 includes a servo motor 301 that drives the rotating shaft 302 to rotate. A fixed frame 303 is mounted in the middle of the rotating shaft 302. Clamping arms 305 for holding tablets are rotatably mounted on both sides of the fixed frame 303. A connecting plate 306 is mounted at the bottom of the rotating shaft 302, located below the fixed frame 303. Connecting arms 309 are rotatably mounted on both sides of the connecting plate 306. One end of each connecting arm 309 is rotatably connected to the clamping arm 305. The servo motor 301 drives the rotating shaft 302 to rotate, providing power support for the movement of the entire acquisition component 3. The fixed frame 303 is the mounting carrier for the clamping arms 305, and its two sides provide rotation fulcrums for the clamping arms 305. The clamping arms 305 are rotatably connected to the fixed frame 303 and are used to directly clamp the tablets. Their opening or closing angle can be adjusted according to the tablet specifications. The connecting plate 306 is installed at the bottom of the rotating shaft 302 and below the fixed frame 303. It moves with the rotation of the rotating shaft 302 and is rotatably connected to the clamping arm 305 through the connecting arms 309 on both sides, forming a linkage transmission mechanism. When the servo motor 301 drives the rotating shaft 302 to rotate, the connecting plate 306 moves up and down accordingly. Through the connecting arms 309, it pulls or pushes the clamping arm 305 to rotate around the fulcrum of the fixed frame 303, realizing the automatic adjustment of the opening angle of the clamping arm 305. This allows the clamping arm 305 to adapt to tablets of different sizes or shapes without the need for manual replacement of sampling components, solving the problem of the single sampling head in existing equipment.

[0019] The servo motor 301 can be a motor with a rated power of 400W and a rated speed of 3000r / min. The 400W rated power can drive mechanical loads including the fixed frame 303 and the connecting plate 306; the acceleration time of 0.08s meets the high-frequency acquisition requirements of 30-60 times per minute, ensuring synchronization with the conveying rhythm of the conveyor frame 2, and is an ideal power source for realizing the adaptive clamping function.

[0020] Preferably, the fixing frame 303 has symmetrically provided first rotating grooves 304 on both sides, and each set of clamping arms 305 is rotatably mounted inside the first rotating groove 304 via a pin. The first rotating groove 304 provides a precise rotational mounting position for the clamping arms 305, ensuring that the clamping arms 305 maintain a stable movement trajectory during rotation. The pin passes through the clamping arms 305 and the first rotating groove 304, hinged to the fixing frame 303, allowing the clamping arms 305 to rotate flexibly around the pin. This design ensures the stability and accuracy of the clamping arms 305 during adjustment, avoids clamping deviation caused by excessive installation gaps, and improves the device's adaptability to different tablets.

[0021] Preferably, the connecting plate 306 has symmetrically provided second rotating grooves 307 on both sides, and symmetrically provided connecting holes 308 in the middle of the two sets of clamping arms 305. The two ends of each set of connecting arms 309 are respectively connected to the middle of the corresponding second rotating groove 307 and the interior of the connecting hole 308 via pins. The second rotating groove 307 provides a rotating mounting point for one end of the connecting arm 309; the connecting holes 308 are symmetrically provided in the middle of the clamping arms 305, providing a connection interface for the other end of the connecting arm 309. When the rotating shaft 302 drives the connecting plate 306 to move, the connecting arm 309 rotates around the pin in the second rotating groove 307, and simultaneously pulls or pushes the clamping arm 305 to swing around the pin on the fixed frame 303 through the connecting hole 308, realizing the linkage adjustment of the opening angle of the clamping arm 305. This structure simplifies the equipment structure and improves reliability.

[0022] Furthermore, elastic pads 310 are provided on the opposing clamping surfaces of the two sets of clamping arms 305, and each set of elastic pads 310 has anti-slip textures on the sidewalls that contact the tablet. The elastic pads 310 are made of flexible material, and their main function is to provide cushioning protection when clamping the tablet, preventing the tablet from breaking or being scratched due to excessive clamping force. The anti-slip textures are provided on the sidewalls of the elastic pads 310 that contact the tablet, increasing the coefficient of friction of the contact surface and preventing the tablet from slipping due to vibration or movement during clamping, thus ensuring the stability of the collection process.

[0023] Furthermore, a fixed base 4 is mounted on the upper part of the base 1, located on the side of the conveyor frame 2. A support frame 5 is rotatably mounted on the upper part of the fixed base 4, and a stepper motor 6, which drives the support frame 5 to rotate, is mounted in the middle of the fixed base 4. The fixed base 4 provides a mounting foundation for the support frame 5 and the stepper motor 6. The support frame 5 is rotatably mounted on the upper part of the fixed base 4 to support the collection component 3, and its rotation angle can be adjusted according to the position of the tablet on the conveyor frame 2. The stepper motor 6 is mounted in the middle of the fixed base 4 to drive the support frame 5 to rotate around the rotation axis of the fixed base 4, thereby realizing the horizontal position adjustment of the collection component 3. This rotatable support frame structure, combined with the clamping and adjustment function of the collection component 3 itself, improves the collection flexibility of the device in complex conveying environments.

[0024] The stepper motor 6 can be a motor with a static torque of 4.0 Nm and a driver with a microstepping accuracy of 25,600 pulses / revolution. The static torque of 4.0 Nm is sufficient to drive the support frame 5 and the acquisition component 3 to rotate smoothly, and the microstepping accuracy of 25,600 pulses / revolution enables angle adjustment of ±0.1°, accurately aligning the tablets on the delivery frame 2 with a spacing of 10-50 mm.

[0025] It is worth noting that an electric push rod 7 is installed through the middle of the support frame 5, and a fixing housing 8 for fixing a servo motor 301 is installed at the output end of the electric push rod 7. The electric push rod 7 converts electrical energy into linear motion, driving the fixing housing 8 to move vertically. The fixing housing 8 is used to install the servo motor 301, which is connected to the output end of the electric push rod 7 and moves up and down with the extension and retraction of the electric push rod 7, thereby driving the entire acquisition component 3 to adjust its height. The two work together to realize the vertical position adjustment of the acquisition component 3, so that the clamping arm 305 can adapt to tablets of different heights on the conveyor frame 2, further improving the versatility and acquisition accuracy of the device.

[0026] The electric actuator 7 can be equipped with a stroke of 100mm, a thrust of 1000N, and a speed of 5-30mm / s. The 1000N thrust can stably support the vertical movement of the acquisition component 3, including the servo motor 301 and the fixed housing 8. The 100mm stroke meets the acquisition requirements of tablets at different heights on the conveyor frame 2. The adjustable speed range of 5-30mm / s adapts to different acquisition scenarios.

[0027] Specifically, the servo motor 301 is installed inside the fixed housing 8. Several sets of heat dissipation holes 9 for the servo motor 301 are provided on the side wall of the fixed housing 8. The rotating shaft 302 extends through and to the lower part of the fixed housing 8. The fixed housing 8 provides installation space for the servo motor 301, and its structure also protects the servo motor 301, preventing dust, pill fragments, and other impurities from entering the motor and affecting its operation. The heat dissipation holes 9 are located on the side wall of the fixed housing 8, allowing air convection to dissipate the heat generated by the servo motor 301 during prolonged operation, preventing problems such as unstable speed or shortened lifespan due to overheating. The rotating shaft 302 extends through the lower part of the fixed housing 8 and connects to the output shaft of the servo motor 301, transmitting the motor's rotational power to the upper mounting bracket 303 and connecting plate 306.

[0028] More specifically, a connecting sleeve 311 is fitted around the outside of the rotating shaft 302. The two ends of the connecting sleeve 311 are respectively connected to the bottom of the fixed housing 8 and the top of the fixed frame 303. The connection of the two ends of the connecting sleeve 311 to the bottom of the fixed housing 8 and the top of the fixed frame 303 rigidly connects the fixed housing 8 and the fixed frame 303 into a single integrated structure. This does not affect the rotation of the rotating shaft 302 driven by the servo motor 301, and provides rigid support for the fixed frame 303, ensuring that the fixed frame 303 is always in the preset working position.

[0029] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tablet inspection sample collection device, characterized by: Includes a base (1), on the upper part of which a conveyor rack (2) for conveying tablets is installed, and on the upper part of which an adjustable collection component (3) for collecting tablets from the conveyor rack (2) is movably installed; The acquisition component (3) includes a servo motor (301) that drives the rotating shaft (302) to rotate. A fixed frame (303) is installed in the middle of the rotating shaft (302). Clamping arms (305) for holding tablets are rotatably installed on both sides of the fixed frame (303). A connecting plate (306) is installed at the bottom of the rotating shaft (302) below the fixed frame (303). Connecting arms (309) are rotatably installed on both sides of the connecting plate (306). One end of each set of connecting arms (309) is rotatably connected to the clamping arm (305).

2. A tablet inspection sample collection device according to claim 1, characterized in that: The fixing frame (303) has symmetrical first rotating grooves (304) on both sides, and each set of clamping arms (305) is rotatably installed inside the first rotating groove (304) by means of a pin.

3. A tablet inspection sample collection device according to claim 1, wherein: The connecting plate (306) has symmetrical second rotating grooves (307) on both sides, and the two sets of clamping arms (305) have symmetrical connecting holes (308) in the middle. The two ends of each set of connecting arms (309) are connected to the middle of the corresponding second rotating groove (307) and the interior of the connecting hole (308) respectively by pins.

4. A tablet inspection sample collection device according to claim 1, wherein: The clamping surfaces of the two sets of clamping arms (305) are provided with elastic pads (310), and the sidewalls of each set of elastic pads (310) that contact the tablet are provided with anti-slip textures.

5. A tablet inspection sample collection device according to claim 1, wherein: A fixed seat (4) is installed on the upper part of the base (1) on the side of the conveyor frame (2). A support frame (5) is rotatably installed on the upper part of the fixed seat (4). A stepper motor (6) that drives the support frame (5) to rotate is installed in the middle of the fixed seat (4).

6. A tablet testing sample collection device according to claim 5, wherein: An electric push rod (7) is installed through the middle of the support frame (5), and a fixed housing (8) for fixing a servo motor (301) is installed at the output end of the electric push rod (7).

7. A tablet inspection sample collection device according to claim 6, wherein: The servo motor (301) is installed inside the fixed housing (8). The side wall of the fixed housing (8) is provided with several sets of heat dissipation holes (9) for the servo motor (301). The rotating shaft (302) extends through to the lower part of the fixed housing (8).

8. A tablet inspection sample collection device according to claim 1, wherein: The rotating shaft (302) is fitted with a connecting sleeve (311), and the two ends of the connecting sleeve (311) are respectively connected to the bottom of the fixed shell (8) and the top of the fixed frame (303).

Images