Capsule screening checkweigher for multi-stage corrugated vibration blanking

Abstract

The utility model relates to the technical field of capsule screening equipment, in particular to a capsule screening checkweigher for multi-stage corrugated vibration blanking, which comprises a blanking hopper, a blanking vibration plate arranged below the bottom discharge end of the blanking hopper, a queuing vibration plate arranged at one end of the blanking vibration plate, a weighing platform arranged at one end of the queuing vibration plate, and a weighing platform arranged at the other end of the weighing platform. A material guide plate is arranged at one end of the weighing platform, a transition plate is arranged at one end of the material guide plate, and a vertical removing baffle capable of moving up and down is arranged between the material guide plate and the transition plate. According to the capsule screening checkweigher for multi-stage corrugated vibration blanking, the corrugated distribution channel of the blanking vibration plate is matched with the splitter plate of the queuing vibration plate, so that capsules are automatically divided into a plurality of queuing channels, the capsules can enter the weighing platform in order one by one, and the problem of material disorder caused by traditional single linear vibration or vertical pipeline queuing is solved. The queuing vibration plate is lower than the discharging vibration plate, gradient type vibration conveying is formed in cooperation with independent driving of the first linear vibrator and the second linear vibrator, and capsules are prevented from being stacked or stuck.

Description

Technical Field

[0001] This utility model relates to the technical field of capsule screening equipment, specifically to a capsule screening checkweigher with multi-stage corrugated vibration feeding. Background Technology

[0002] In capsule manufacturing, capsule weight is a key quality indicator affecting the accuracy of drug dosage; therefore, the performance of capsule screening and weighing equipment is crucial. Currently, commercially available capsule weighing equipment faces several technical bottlenecks in material conveying and weighing processes:

[0003] On the one hand, traditional feeding devices, such as vertical pipe queuing or single corrugated plate structures, are difficult to achieve uniform and orderly feeding of capsules. For example, some equipment uses a single-capsule feeding method with a top plate and groove (such as the prior art document of application number CN202211552722.9). Although it can achieve capsule feeding, this structure relies on the precise coordination of mechanical gates and drive devices, which poses a risk of component wear, and the multi-stage linkage structure increases the complexity of equipment maintenance.

[0004] On the other hand, the existing checkweighing equipment has shortcomings in terms of adaptability and cleanliness. The automatic dispensing device in the prior art requires multiple sets of mechanical components to achieve capsule positioning, resulting in a large number of moving parts in contact with the capsules, making it difficult to meet the stringent GMP requirements for equipment cleanliness and sterilization. Furthermore, some equipment uses a horizontal weighing platform design, which makes it easy for powder to accumulate, leading to drift in weighing accuracy. Moreover, the vibration suppression function is weak, making it susceptible to interference in production environments with many large pieces of equipment, resulting in problems such as incorrect rejection of qualified products or missed detection of unqualified products. Utility Model Content

[0005] The purpose of this invention is to provide a capsule screening checkweigher with multi-stage corrugated vibration feeding, in order to solve the problem mentioned in the background art that traditional material handling devices, such as vertical pipe queuing or single corrugated plate structures, are difficult to achieve uniform and orderly feeding of capsules.

[0006] To achieve the above objectives, this utility model provides a capsule screening checkweigher with multi-stage corrugated vibration feeding, including a feeding hopper, a feeding vibration plate arranged below the bottom discharge end of the feeding hopper, a queuing vibration plate arranged at one end of the feeding vibration plate, a weighing platform arranged at one end of the queuing vibration plate, a guide plate arranged at one end of the weighing platform, a transition plate arranged at one end of the guide plate, and a vertical rejection baffle that can be raised and lowered and moved between the guide plate and the transition plate.

[0007] This setup, through the linear layout of the feeding hopper, feeding vibrating plate, queuing vibrating plate, weighing platform, guide plate, transition plate, and rejection baffle, forms a complete process for capsules from feeding to weighing to sorting. The liftable design of the rejection baffle provides a mechanical actuator for rejecting defective products.

[0008] Preferably, the feeding vibrating plate is driven to vibrate linearly by a first linear vibrator, the queuing vibrating plate is driven to vibrate linearly by a second linear vibrator, and the height of the queuing vibrating plate is lower than the height of the feeding vibrating plate.

[0009] This setup utilizes a first linear vibrator and a second linear vibrator to drive the feeding vibrating plate and the queuing vibrating plate, respectively, controlling the material conveying speed through vibrations of different amplitudes and frequencies. The height difference design of the queuing vibrating plate allows the capsules to fall naturally under gravity, reducing damage caused by mechanical pushing.

[0010] Preferably, the surface of the feeding vibrating plate is a material receiving plate near the discharge end of the feeding hopper, and a corrugated material distribution channel for diverting the material is installed on the surface of the feeding vibrating plate near the queuing vibrating plate.

[0011] This feature includes a material receiving plate that receives capsules flowing out of the hopper. The corrugated material distribution channel utilizes the wave crest and trough effect during vibration to disperse the accumulated capsules into multiple fine streams, thus avoiding congestion.

[0012] Preferably, the queuing vibrating plate is divided into several straight queuing channels by a diverter plate with a queuing corrugated structure, so that the material is arranged into several rows and enters the weighing platform one by one.

[0013] This diversion plate with a queuing corrugated structure further refines the material into a straight queue. Utilizing the guiding effect of the corrugations and the inertia of vibration, the capsules enter the weighing platform one by one.

[0014] Preferably, each queuing channel of the queuing vibration plate is equipped with a weighing platform at one end. The weighing platform is inclined and has a straight groove on the top with an arc-shaped cross-section. A weighing sensor is installed at the bottom of the weighing platform.

[0015] This tilted weighing platform utilizes gravity to allow the capsule to pass through quickly. The curved linear groove matches the capsule's shape, reducing the contact area and minimizing frictional interference during weighing. The load cell converts the weight signal into an electrical signal, which is then transmitted to the processing chip.

[0016] Preferably, the rejection baffle is driven by a cylinder to move up and down, and the cylinder is fixed on the bracket by a mounting seat.

[0017] This device uses a cylinder as a power source, which drives the removal baffle to rise and fall rapidly via compressed air. The mounting bracket ensures that the cylinder position is fixed and easy to adjust.

[0018] Preferably, both the guide plate and the transition plate are inclined, so that the material slides from the weighing platform to the guide plate and then to the transition plate.

[0019] The inclined design of the guide plate and transition plate utilizes gravity to achieve unpowered transport of the capsules, reducing mechanical transmission components and lowering the risk of failure.

[0020] Preferably, the weighing platform also includes a processing chip. The weighing platform weighs each material and transmits the weight to the processing chip. When the data is not within the weight range of each qualified material, the processing chip controls the cylinder to drive the rejection baffle to descend, preventing the material from sliding from the guide plate to the transition plate. A waste collection trough is provided below the guide plate and the transition plate, and a finished product collection trough is provided at the lower end of the transition plate.

[0021] This setting allows the chip to receive weighing data and perform real-time analysis. When a defective product is detected, the cylinder is immediately controlled to drive the rejection baffle to descend, intercepting the defective capsule into the waste collection tank. Qualified products then enter the finished product collection tank through the transition plate.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] In this multi-stage corrugated vibration feeding capsule screening checkweigher, the corrugated material distribution channel of the feeding vibration plate cooperates with the diversion plate of the queuing vibration plate to automatically divide the capsules into multiple queuing channels, so that the capsules can enter the weighing platform in an orderly manner one by one, which solves the problem of material disorder caused by traditional single linear vibration or vertical pipe queuing.

[0024] The queuing vibrating plate is lower than the feeding vibrating plate. Together with the independent drive of the first and second linear vibrators, it forms a gradient vibration conveying, which avoids capsule accumulation or jamming and ensures smooth material flow.

[0025] The weighing platform is tilted, and the top straight groove has an arc cross-section. The capsules slide down the platform using their own weight, avoiding powder accumulation that would occur with a horizontal platform and reducing the risk of sensor damage from external forces. The processing chip controls a cylinder to drive a rejection baffle based on the weighing data, intercepting defective capsules in real time and directing them to the waste collection trough. Qualified capsules fall into the finished product collection trough, ensuring a high pass rate. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the feeding vibrating plate in this utility model;

[0028] Figure 3 This is a schematic diagram of the queuing vibration plate in this utility model;

[0029] Figure 4 This is a schematic diagram of the weighing platform in this utility model;

[0030] Figure 5This is a schematic diagram of the structure of the present invention with the baffle removed;

[0031] The meanings of the labels in the diagram are as follows:

[0032] 1. Feeding hopper; 2. Feeding vibrating plate; 21. First linear vibrator; 22. Material holding plate; 23. Material distribution channel; 3. Queuing vibrating plate; 31. Second linear vibrator; 32. Queuing diversion plate; 4. Weighing platform; 41. Linear trough; 42. Weighing sensor; 5. Guide plate; 6. Transition plate; 7. Rejection baffle; 71. Cylinder; 72. Mounting base; 8. Waste collection trough; 9. Finished product collection trough. Detailed Implementation

[0033] 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.

[0034] This utility model provides a capsule screening checkweigher with multi-stage corrugated vibration feeding, such as... Figure 1 As shown, the device includes a feeding hopper 1, a feeding vibrating plate 2 located below the bottom discharge end of the feeding hopper 1, a queuing vibrating plate 3 located at one end of the feeding vibrating plate 2, a weighing platform 4 located at one end of the queuing vibrating plate 3, a guide plate 5 located at one end of the weighing platform 4, a transition plate 6 located at one end of the guide plate 5, and a vertical rejection baffle 7 that can be raised and lowered and moved between the guide plate 5 and the transition plate 6.

[0035] The linear layout of the feeding hopper 1, feeding vibrating plate 2, queuing vibrating plate 3, weighing platform 4, guide plate 5, transition plate 6, and rejection baffle 7 forms a complete process for capsules from feeding to weighing to sorting. The liftable design of the rejection baffle 7 provides a mechanical actuator for rejecting defective products. This achieves continuous automated screening and weighing of capsules, with a compact and modular structure that facilitates installation and maintenance. The vertical movement of the rejection baffle 7 saves more space than traditional horizontal push rods and effectively prevents capsule jamming.

[0036] In this embodiment, as Figure 2 , Figure 3 As shown, the feeding vibrating plate 2 is driven by the first linear vibrator 21 to perform linear vibration, and the queuing vibrating plate 3 is driven by the second linear vibrator 31 to perform linear vibration. The height of the queuing vibrating plate 3 is lower than the height of the feeding vibrating plate 2.

[0037] The material conveying speed is controlled by using a first linear vibrator 21 and a second linear vibrator 31 to drive the feeding vibrating plate 2 and the queuing vibrating plate 3, respectively, through vibrations of different amplitudes and frequencies. The height difference design of the queuing vibrating plate 3 allows the capsules to fall naturally under gravity, reducing damage caused by mechanical pushing. The independent control of the two vibrators enables precise adjustment of material conveying, and the height difference design reduces energy consumption and improves the integrity of the capsules.

[0038] Specifically, such as Figure 2 , Figure 3 As shown, the surface of the feeding vibrating plate 2 near the discharge end of the feeding hopper 1 is a material receiving plate 22, and the surface of the feeding vibrating plate 2 near the queuing vibrating plate 3 is equipped with a corrugated material distribution channel 23 for diverting materials.

[0039] The receiving plate 22 receives the capsules flowing out of the hopper 1. The corrugated distribution channel 23 utilizes the wave crest and trough effect during vibration to disperse the accumulated capsules into multiple fine streams, avoiding congestion. The corrugated design of the distribution channel 23 makes the material distribution more uniform. At the same time, the corrugated structure increases the friction during vibration, making it easier for the capsules to align neatly during the conveying process.

[0040] Furthermore, such as Figure 2 , Figure 3 As shown, the queuing vibrating plate 3 is divided into several straight queuing channels by the diversion plate 32 of the queuing corrugated structure, so that the material is arranged into several rows and enters the weighing platform 4 one by one.

[0041] The corrugated flow divider 32 further refines the material into a straight queue. Utilizing the guiding effect of the corrugations and vibration inertia, the capsules enter the weighing platform 4 one by one. This design achieves single-row queuing of capsules, ensuring that each capsule is weighed independently and avoiding errors caused by weighing multiple capsules simultaneously.

[0042] Furthermore, such as Figure 3 , Figure 4 As shown, a weighing platform 4 is installed at one end of each queuing channel of the queuing vibration plate 3. The weighing platform 4 is inclined and has a straight groove 41 on the top. The straight groove 41 has an arc-shaped cross-section. A weighing sensor 42 is installed at the bottom of the weighing platform 4.

[0043] The tilted weighing platform 4 utilizes gravity to allow the capsule to pass through quickly. The arc-shaped linear groove 41 matches the shape of the capsule, reducing the contact area and minimizing frictional interference during weighing. The load cell 42 converts the weight signal into an electrical signal, which is then transmitted to the processing chip. The tilted design and arc-shaped groove structure shorten the weighing time compared to traditional horizontal weighing platforms. Simultaneously, the arc-shaped groove reduces powder residue, improving weighing accuracy.

[0044] Furthermore, such as Figure 5As shown, the removal baffle 7 is driven to move up and down by a cylinder 71, which is fixed to the bracket by a mounting base 72.

[0045] Cylinder 71 serves as the power source, driving the rejection baffle 7 to rise and fall rapidly via compressed air. Mounting base 72 ensures the cylinder position is fixed and easily adjustable. The cylinder-driven response is fast, enabling precise interception of defective capsules. The adjustability of mounting base 72 allows the rejection baffle 7 to adapt to the screening needs of capsules of different sizes.

[0046] Furthermore, such as Figure 1 As shown, both the guide plate 5 and the transition plate 6 are inclined. The material slides from the weighing platform 4 to the guide plate 5, and then slides to the transition plate 6.

[0047] The inclined design of the guide plate 5 and transition plate 6 utilizes gravity to achieve unpowered transport of the capsules, reducing mechanical transmission components and lowering the risk of failure. This inclined transport method reduces energy consumption and also decreases friction between the capsules and the conveying surface, further reducing breakage rates.

[0048] Furthermore, it also includes a processing chip. The weighing platform 4 weighs each material and transmits the weight to the processing chip. When the data is not within the weight range of each qualified material, the processing chip controls the cylinder 71 to drive the rejection baffle 7 to descend, preventing the material from sliding from the guide plate 5 to the transition plate 6. A waste collection trough 8 is provided below the guide plate 5 and the transition plate 6, and a finished product collection trough 9 is provided at the lower end of the transition plate 6.

[0049] The processing chip receives and analyzes weighing data in real time. When a defective product is detected, it immediately controls cylinder 71 to drive the rejection baffle 7 to descend, intercepting the defective capsules and placing them in the waste collection tank 8. Qualified products then pass through the transition plate 6 into the finished product collection tank 9. This closed-loop control system achieves defective product rejection while maintaining the sorting speed synchronized with the production line, without affecting overall production efficiency. The separate design of the waste collection tank 8 and the finished product collection tank 9 facilitates subsequent processing and quality traceability.

[0050] In use, the multi-stage corrugated vibration feeding capsule screening checkweigher of this utility model first uses a first linear vibrator 21 and a second linear vibrator 31 to drive the feeding vibrating plate 2 and the queuing vibrating plate 3 respectively. The inertial force generated by the mechanical vibration causes the capsules to move along the corrugated distribution channel 23 and the diverting plate 32. The corrugated distribution channel 23 of the feeding vibrating plate 2 uses the crest and trough effect to disperse the accumulated capsules into multiple fine streams, and the diverting plate 32 of the queuing vibrating plate 3 further organizes the capsules into a single queue, realizing orderly conveying of capsules one by one.

[0051] The weighing platform 4 is tilted and the top straight groove 41 is arc-shaped. When the capsule slides down the straight groove 41 by gravity, the weighing sensor 42 detects the weight of the capsule in real time and converts the weight signal into an electrical signal, which is then transmitted to the processing chip. The arc-shaped groove design reduces the contact area between the capsule and the weighing platform, reducing the interference of friction on the weighing.

[0052] The processing chip presets a qualified weight range. When the received weighing data exceeds this range, it immediately sends an electrical signal to control the cylinder 71 to drive the rejection baffle 7 to descend, forming an interception between the guide plate 5 and the transition plate 6. The unqualified capsules fall into the waste collection tank 8; the qualified capsules slide down the guide plate 5 and the transition plate 6 to the finished product collection tank 9.

[0053] Working process: Capsules fall from the bottom discharge end of the feed hopper 1 onto the receiving plate 22 of the feed vibrating plate 2. The first linear vibrator 21 drives the feed vibrating plate 2 to generate linear vibration, causing the capsules to move towards the queuing vibrating plate 3. The corrugated distribution channel 23 near the queuing vibrating plate 3 divides the accumulated capsules into multiple fine streams to avoid congestion. The queuing vibrating plate 3 vibrates under the drive of the second linear vibrator 31. Its height is lower than that of the feed vibrating plate 2, and the capsules fall into the diversion plate 32 of the queuing vibrating plate 3 due to gravity and vibration inertia. The corrugated structure of the diversion plate 32 organizes the capsules into several straight queuing channels, enabling them to enter the weighing platform 4 in an orderly manner.

[0054] The capsule enters the inclined weighing platform 4 along the queuing channel and slides rapidly down the arc-shaped straight groove 41 under the action of gravity. The weighing sensor 42 collects the weight data in real time and transmits it to the processing chip. The processing chip analyzes the weight data in real time, compares it with the preset qualified range, and determines whether the capsule is qualified.

[0055] If the capsule's weight is within acceptable limits, the processing chip does not trigger a rejection command. The capsule slides down the weighing platform 4 to the inclined guide plate 5, and then enters the finished product collection tank 9 via the transition plate 6. If the weight is not within acceptable limits, the processing chip controls the cylinder 71 to drive the rejection baffle 7 to descend rapidly, intercepting the capsule and causing it to fall into the waste collection tank 8, thus achieving 100% rejection of defective products.

[0056] Finally, it should be noted that the processing chip, weighing platform 4, and other electronic components in this embodiment are all general standard parts or parts known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods. In the idle space of this device, all the above-mentioned electrical components are connected by wires. The specific connection method should refer to the working order of each electrical component in the above working principle to complete the electrical connection. All of these are technologies known in the art.

[0057] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-stage corrugated vibration feeding capsule screening checkweigher, comprising a feeding hopper (1), characterized in that: A feeding vibrating plate (2) is provided below the bottom discharge end of the feeding hopper (1). A queuing vibrating plate (3) is provided at one end of the feeding vibrating plate (2). A weighing platform (4) is provided at one end of the queuing vibrating plate (3). A guide plate (5) is provided at one end of the weighing platform (4). A transition plate (6) is provided at one end of the guide plate (5). A vertical rejection baffle (7) that can be raised and lowered is provided between the guide plate (5) and the transition plate (6).

2. The capsule screening checkweigher with multi-stage corrugated vibration feeding according to claim 1, characterized in that: The feeding vibration plate (2) is driven to vibrate linearly by the first linear vibrator (21), and the queuing vibration plate (3) is driven to vibrate linearly by the second linear vibrator (31). The height of the queuing vibration plate (3) is lower than the height of the feeding vibration plate (2).

3. The capsule screening checkweigher with multi-stage corrugated vibration feeding according to claim 2, characterized in that: The surface of the feeding vibrating plate (2) near the discharge end of the feeding hopper (1) is a material receiving plate (22) for receiving materials. The surface of the feeding vibrating plate (2) near the queuing vibrating plate (3) is equipped with a corrugated material distribution channel (23) for diverting materials.

4. The capsule screening checkweigher with multi-stage corrugated vibration feeding according to claim 3, characterized in that: The queuing vibrating plate (3) is divided into several straight queuing channels by the diversion plate (32) of the queuing corrugated structure, so that the material is arranged into several rows and enters the weighing platform (4) one by one.

5. The capsule screening checkweigher with multi-stage corrugated vibration feeding according to claim 4, characterized in that: Each queuing channel of the queuing vibration plate (3) is equipped with a weighing platform (4) at one end. The weighing platform (4) is inclined and has a straight groove (41) on the top. The cross-section of the straight groove (41) is arc-shaped. A weighing sensor (42) is installed at the bottom of the weighing platform (4).

6. The capsule screening checkweigher with multi-stage corrugated vibration feeding according to claim 1, characterized in that: The rejection baffle (7) is driven to move up and down by a cylinder (71), which is fixed on the bracket by a mounting seat (72).

7. The capsule screening checkweigher with multi-stage corrugated vibration feeding according to claim 6, characterized in that: Both the guide plate (5) and the transition plate (6) are inclined. The material slides from the weighing platform (4) to the guide plate (5) and then to the transition plate (6).

8. The capsule screening checkweigher with multi-stage corrugated vibration feeding according to claim 7, characterized in that: It also includes a processing chip. The weighing platform (4) weighs each material and transmits the weight to the processing chip. When the data is not within the weight range of each qualified material, the processing chip controls the cylinder (71) to drive the rejection baffle (7) to descend, preventing the material from sliding from the guide plate (5) to the transition plate (6). A waste collection trough (8) is provided below the guide plate (5) and the transition plate (6). A finished product collection trough (9) is provided at the lower end of the transition plate (6).

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