Capsule discharging device

Abstract

The utility model discloses a capsule discharging device which comprises a stock bin and a rotatable vacuum roller, a plurality of ventilation cavities used for containing materials are arranged on the vacuum roller, an inclined sliding way is arranged at a discharging port of the stock bin, the sliding way is in butt joint with the top of the vacuum roller, and a discharging port is formed in the bottom of the vacuum roller. Capsules are discharged from a discharge port of a stock bin, pass through an inclined sliding way and fall into ventilation cavities under the vacuum action of a vacuum roller, when the vacuum roller rotates to the position where the capsules are located at the bottom of the vacuum roller, the corresponding ventilation cavities are switched to be in positive pressure, the capsules are separated from the ventilation cavities, and discharging is completed. In the process, materials are in butt joint with the rotatable vacuum roller through a section of inclined slide way when the material bin discharges, when the capsules pass through the inclined slide way, part of gravity serves as advancing power, the speed of the capsules falling into the ventilation cavity is controlled, and the situation of material blocking is not prone to occurring.

Description

Technical Field

[0001] The utility model relates to the field of capsule blanking, in particular to a capsule blanking device. Background Art

[0002] Conventional hard capsule contents include solid fillings such as powder, microtablets, and micropellets. Liquid filling is an emerging filling method in recent years, which involves pouring oily substances into hard capsules and then gluing and sealing the capsule body and cap.

[0003] The most common feeding methods for aluminum-plastic blister machines include vibrating disc feeders, universal disc brush feeders, or oscillating feeders. These all essentially use a vibrator or brush to distribute tablets or capsules into the preformed blister cells. A vibrating disc feeder uses the vibration of a disc to sort tablets or capsules into a feed plate; a disc brush uses a rotating brush head to evenly distribute the material within the aluminum-plastic blister cells; and an oscillating feeder uses reciprocating vibrations to feed tablets into a feed tube. These feeders are relatively mature technologies for solid capsules and tablets, but they can be detrimental to liquid-filled hard capsules. After the liquid is filled into the hard capsule, glue is applied between the capsule body and cap to seal it. However, external forces, such as vibration or scraping, can cause the seal to rupture, leading to leakage. Cleaning the components and heat-sealing the aluminum foil after leakage can be quite complex, significantly reducing production efficiency. Therefore, these feeders are not suitable for liquid capsules.

[0004] In the prior art, for example, a capsule packaging system with patent publication number CN220391607U uses a negative pressure roller to absorb and discharge the material. However, the capsule moves at a high speed, and the problem of material jamming is very likely to occur. Utility Model Content

[0005] The purpose of the utility model is to provide a capsule feeding device, which solves the problem of capsules being stuck from the hopper to the negative pressure roller.

[0006] The utility model is implemented as follows: a capsule unloading device includes a hopper and a rotatable vacuum roller, the vacuum roller is provided with a plurality of ventilation chambers for accommodating materials, the hopper discharge port is provided with an inclined slide, the slide is connected to the top of the vacuum roller, and the bottom of the vacuum roller is provided with a unloading port.

[0007] The capsule is discharged from the silo outlet, passes through an inclined slide, and falls into the ventilation chamber under the vacuum action of the vacuum roller. When the vacuum roller rotates until the capsule is at the bottom of the vacuum roller, the corresponding ventilation chamber switches to positive pressure, and the capsule escapes from the ventilation chamber to complete the discharge. In this process, the material discharged from the silo is docked with the rotatable vacuum roller through an inclined slide. When the capsule passes through the inclined slide, part of the gravity is used as the forward power, and the speed at which the capsule falls into the ventilation chamber is controlled, which makes it less likely to get stuck.

[0008] A further technical solution of the present invention is that the vacuum roller is provided with a material sorting mechanism along the conveying direction. When the material is discharged into the ventilation chamber, it may not fall completely into the ventilation chamber. The material sorting mechanism is provided along the conveying direction of the vacuum roller to ensure that the material falls completely into the ventilation chamber, thereby preventing it from being thrown out during the subsequent movement or affecting detection.

[0009] A further technical solution of the present invention is that the material handling mechanism includes a material distributing roller connected to the positive pressure gas. The material distributing roller is connected to the positive pressure gas, and the positive pressure of the material distributing roller blows the material into the ventilation chamber, which is simple and easy to operate.

[0010] A further technical solution of the present invention is as follows: the vacuum roller comprises a first roller and a second roller arranged in a coordinated manner, the first roller being provided with a detection assembly and a waste rejection station in sequence, the waste rejection station being connected to the lower half of the first roller, and the second roller being provided with a feeding bin being connected to the upper half of the second roller. Considering that in actual application, detection, waste rejection, and feeding follow a certain sequence, and that the ventilation chamber connected to the waste rejection station needs to face downward during waste rejection, while the ventilation chamber needs to face upward during feeding, and that feeding is at the top and discharging is at the bottom, the present invention provides the first roller and the second roller to ensure that detection, waste rejection, and feeding are carried out smoothly and sequentially.

[0011] A further technical solution of the present invention is that the ventilation chamber corresponding to the rejection station can be switched to a positive pressure state. When the detection component detects a defective capsule and the unqualified capsule moves to the rejection station, the ventilation chamber switches from a negative pressure suction state to a positive pressure blowing state, blowing the unqualified capsule out of the ventilation chamber for collection. The principle of the negative to positive pressure conversion is achieved by the solenoid valve at the front end.

[0012] A further technical solution of the present invention is that the feeding bin is butted against the side of the second roller via an inclined guide portion. The material in the feeding bin is butted against the side of the second roller via an inclined guide portion, which also takes into account the problem of material jamming during material unloading.

[0013] A further technical solution of this utility model is that a first cleaning roller is provided on the side of the first roller opposite the detection assembly, and a second cleaning roller is provided on the side of the second roller opposite the feeding bin. After conveying material, the first roller and the second roller pass through the first and second cleaning rollers, where they are cleaned. These cleaning rollers remove foreign matter and undischarged capsules from the surface of the vacuum rollers, ensuring a clean surface and preparing for the next feeding.

[0014] A further technical solution of the present invention is that a material level sensor is provided on the slideway, and a gate is provided at the discharge end of the silo to control material discharge. When the material level sensor senses that the material exceeds the level, the gate controls the discharge end to reduce the speed, thereby preventing the slideway from accumulating and causing material jams.

[0015] A further technical solution of the present invention is that the vacuum roller is connected to a drive motor via a pneumatic slip ring, which is in communication with a vacuum device. The pneumatic slip ring is in communication with the vacuum device, and negative pressure from the vacuum device enters the vacuum roller through the pneumatic slip ring, causing the ventilation chamber on the vacuum roller to maintain negative pressure. Conversely, when positive pressure is required, a solenoid valve is adjusted to switch the pressure.

[0016] The beneficial effects of the present invention are as follows: the capsule is discharged from the discharge port of the hopper, passes through the inclined slide, and under the vacuum action of the vacuum roller, the capsule falls into the ventilation chamber. When the vacuum roller rotates until the capsule is at the bottom of the vacuum roller, the corresponding ventilation chamber is switched to positive pressure, and the capsule is released from the ventilation chamber to complete the discharge. In this process, the material discharged from the hopper is docked with the rotatable vacuum roller through a section of inclined slide. When the capsule passes through the inclined slide, part of the gravity is used as the driving force for the forward movement, and the speed at which the capsule falls into the ventilation chamber is controlled, so that the material is not easily stuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a capsule feeding device provided by the utility model;

[0018] Figure 2 The utility model is a schematic diagram of the internal structure of a capsule feeding device provided by the present invention.

[0019] Figure numerals: 1. Material silo, 2. Vacuum roller, 21. First roller, 22. Second roller, 3. Ventilation chamber, 4. Slide, 41. Material level sensor, 5. Feeding port, 6. Material sorting mechanism, 7. Detection component, 8. Waste rejection station, 9. Replenishing silo, 101. First cleaning roller, 102. Second cleaning roller, 11. Gate, 12. Drive motor, 13. Pneumatic slip ring, 14. Rejected product collection box, 15. Transition guide groove, 61. Positive pressure air inlet, 71. Light source, 72. Camera, 73. Imaging detection touch screen. DETAILED DESCRIPTION

[0020] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention.

[0021] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for understanding and reading by those familiar with this technology, and are not used to limit the conditions for implementation of the present invention. Therefore, they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose of the present invention. At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments in their relative relationships should also be considered as the scope of implementation of the present invention without substantially changing the technical content.

[0022] Example 1:

[0023] Figure 1-2 A capsule unloading device is shown, comprising a silo 1 and a rotatable vacuum roller 2. The vacuum roller 2 is provided with a plurality of ventilation chambers 3 for accommodating materials. The discharge port of the silo 1 is provided with an inclined slide 4, which is connected to the top of the vacuum roller 2. The vacuum roller 2 has a unloading port 5 at its bottom.

[0024] The capsule is discharged from the silo outlet, passes through an inclined slide, and falls into the ventilation chamber under the vacuum action of the vacuum roller. When the vacuum roller rotates until the capsule is at the bottom of the vacuum roller, the corresponding ventilation chamber switches to positive pressure, and the capsule escapes from the ventilation chamber to complete the discharge. In this process, the material discharged from the silo is docked with the rotatable vacuum roller through an inclined slide. When the capsule passes through the inclined slide, part of the gravity is used as the forward power, and the speed at which the capsule falls into the ventilation chamber is controlled, which makes it less likely to get stuck.

[0025] In this embodiment, a vibrator is provided on the slideway 4, and the vibrator is used to assist in unloading.

[0026] In this embodiment, a material sorting mechanism 6 is provided on the vacuum roller 2 along the conveying direction. When the material is discharged into the ventilation chamber, it may not fall completely into the ventilation chamber. The material sorting mechanism is provided along the conveying direction of the vacuum roller to ensure that the material falls completely into the ventilation chamber to prevent it from being thrown out during the subsequent movement or affecting the detection.

[0027] In this embodiment, the material handling mechanism 6 includes a material distributing roller connected to the positive pressure gas. The material distributing roller is connected to the positive pressure gas, and the material is blown into the ventilation chamber by the positive pressure of the material distributing roller, which is simple and easy to operate.

[0028] In this embodiment, the material handling mechanism includes a rotatable material distribution roller, which is connected to the positive pressure gas to blow the material into the ventilation chamber.

[0029] In this embodiment, the slide is placed on one side of the top of the vacuum roller, and the distribution roller is placed on the other side of the top of the vacuum roller, wherein the distribution roller pushes the capsule into the ventilation chamber at the top to prevent the capsule from being thrown out during rotation.

[0030] In this embodiment, the vacuum roller 2 includes a first roller 21 and a second roller 22 that cooperate with each other. The first roller 21 is provided with a detection component 7 and a waste rejection station 8 in sequence, and the waste rejection station 8 is connected to the lower half of the first roller 21. The second roller 22 is provided with a feeding bin 9, and the feeding bin 9 is connected to the upper half of the second roller 22. Considering that in actual application, detection, waste rejection and feeding are performed in a certain order, and the ventilation chamber connected to the waste rejection station needs to face downward during waste rejection, while the ventilation chamber needs to face upward during feeding, and the feeding is at the top and the discharging is at the bottom, the present invention provides the first roller and the second roller to ensure that detection, waste rejection and feeding are carried out smoothly in sequence.

[0031] In this embodiment, waste is rejected based on the detection results. After the waste is rejected, material needs to be replenished. Therefore, the detection component needs to be set before the waste rejection station, and the waste rejection station needs to be set before the material replenishment. However, the waste rejection station needs to be set close to the lower half of the vacuum roller so that waste is more easily rejected, and material replenishment needs to be set in the upper half of the vacuum roller so that material replenishment is easier to complete. To address this problem, the vacuum roller is designed as the first roller and the second roller, and the material replenishment bin is set at a position that is connected to the second roller, so as to ensure that the detection, waste rejection and material replenishment are carried out smoothly in sequence.

[0032] In this embodiment, the ventilation chamber 3 corresponding to the rejection station 8 can be switched to a positive pressure state. When the detection component detects a defective capsule and the unqualified capsule moves to the rejection station, the ventilation chamber switches from a negative pressure suction state to a positive pressure blowing state, blowing the unqualified capsule out of the ventilation chamber for collection. The principle of the negative to positive pressure conversion is achieved by the solenoid valve at the front end.

[0033] In this embodiment, the feeding bin 9 is butted against the side of the second roller 22 by an inclined guide portion. The material in the feeding bin is butted against the side of the second roller by an inclined guide portion, which also takes into account the problem of material jamming during material unloading.

[0034] In this embodiment, a first cleaning roller 101 is provided on the side of the first roller 21 opposite the detection assembly 7, and a second cleaning roller 102 is provided on the side of the second roller 22 opposite the feeding bin 9. After conveying material, the first roller and the second roller are cleaned by the first and second cleaning rollers when they pass through them. These cleaning rollers can remove foreign matter or undischarged capsules from the surface of the vacuum rollers, ensuring a clean surface and preparing for the next feeding.

[0035] In this embodiment, the first cleaning roller and the second cleaning roller have the same structure, both including a brush and a negative pressure.

[0036] In this embodiment, the slide 4 is provided with a material level sensor 41, and the discharge end of the silo 1 is provided with a gate 11 for controlling the discharge of the material. When the material level sensor senses that the material exceeds the level, the gate controls the speed of the discharge end to reduce to avoid the situation where the material is stuck due to accumulation in the slide.

[0037] In this embodiment, the vacuum roller 2 is connected to the drive motor 12 via a pneumatic slip ring 13, which is in communication with the vacuum equipment. The negative pressure from the vacuum equipment enters the vacuum roller through the pneumatic slip ring, creating a negative pressure in the ventilation chamber on the vacuum roller. Conversely, when positive pressure is required, the solenoid valve is adjusted to switch.

[0038] In this embodiment, a defective product collection box 14 is provided at the reject station.

[0039] In this embodiment, a transition guide groove 15 for assisting material discharge is provided on one side of the discharge port 5 .

[0040] In this embodiment, the material sorting mechanism is connected to the positive pressure gas through the positive pressure air inlet 61 .

[0041] In this embodiment, the detection component 7 includes a light source 71 and a camera 72 , and the detection component 7 is connected to an imaging detection touch screen 73 .

[0042] In this embodiment, the entire transmission part is controlled by a servo motor 12. The servo motor reducer transmits power to the rear end of the first roller 21 through a synchronous belt. After passing through the pneumatic slip ring 13, the transmission shaft drives the first roller 21 to rotate, and the gear on the first roller 21 drives the gear on the second roller 22. In this way, the first roller 21 and the second roller 22 move relative to each other, and the air circuit control is separately controlled after passing through the pneumatic slip ring.

[0043] The operating principle of this utility model is as follows: Capsules enter the hopper and, under the control of a gate, slide down a slideway in a predetermined number onto the surface of a vacuum roller. The vacuum roller is supplied with negative pressure gas via a vacuum pump located outside the roller body. This negative pressure gas is diverted through pipelines and fed to pneumatic slip rings. The pneumatic slip rings then separate the negative pressure gas out the other side and feed it into the airways of the vacuum roller. This creates a negative pressure in the ventilation chamber on the surface of the vacuum roller. As capsules land on the surface of the vacuum roller, they are attracted to it, and the vacuum roller rotates randomly, causing the capsules to fall into the ventilation chamber. If any capsules fail to land or are misaligned with the ventilation chamber, a sorting mechanism, using its rotation and air pressure, pushes them into the ventilation chamber. A blocking device is also included on the sorting mechanism to prevent capsules that have not landed in the ventilation chamber from falling outside the vacuum roller. Capsules adsorbed in the ventilation chamber are imaged and compared using a light source and a camera, generating a signal for unqualified capsules or cavitation. Unqualified capsules are removed at the next rejection station. This rejection occurs when the negative pressure in the ventilation chamber of the vacuum roller changes to positive pressure. This change is achieved by switching the solenoid valve at the front end. Qualified capsules continue to rotate in the ventilation chamber. When they reach the upper surface of the second roller, the negative pressure in the single row of holes on the first roller changes to positive pressure, pushing the capsules out. Simultaneously, the single row of holes on the upper surface of the second roller maintains negative pressure, sucking the capsules off the first roller. The first roller, which has discharged the capsules, continues to rotate to the first cleaning roller. This roller uses a brush and negative pressure to remove foreign matter or undischarged capsules from the surface of the first roller, ensuring a clean surface for the next batch of capsules.

[0044] The second roller carries the capsules from the first roller and rotates to the feeding bin to replenish the capsules rejected by the first roller. The feeding bin uses a guide and a pneumatic vibrator to distribute a small amount of capsules to the second roller. After the second roller rotates to a position above the surface of the aluminum-plastic blister, the second roller, with the assistance of a transition guide chute, changes its negative pressure to positive pressure, pushing the capsules into the holes of the aluminum-plastic blister, completing the distribution.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A capsule feeding device, characterized in that: The invention comprises a silo (1) and a rotatable vacuum roller (2), wherein the vacuum roller (2) is provided with a plurality of ventilation chambers (3) for accommodating materials, a slanted slide (4) is provided at the discharge port of the silo (1), the slide (4) is connected to the top of the vacuum roller (2), and a discharge port (5) is provided at the bottom of the vacuum roller (2).

2. The capsule feeding device according to claim 1, characterized in that: A material sorting mechanism (6) is provided on the vacuum roller (2) along the conveying direction.

3. The capsule feeding device according to claim 2, characterized in that: The material handling mechanism (6) comprises a material distributing roller connected to positive pressure gas.

4. The capsule feeding device according to claim 1, characterized in that: The vacuum roller (2) comprises a first roller (21) and a second roller (22) matched with each other in an upper and lower manner. The first roller (21) is provided with a detection component (7) and a waste rejection station (8) in sequence. The waste rejection station (8) is connected to the lower half of the first roller (21). The second roller (22) is provided with a feeding bin (9). The feeding bin (9) is connected to the upper half of the second roller (22).

5. The capsule feeding device according to claim 4, characterized in that: The ventilation chamber (3) corresponding to the waste rejection station (8) can be switched to a positive pressure state.

6. The capsule feeding device according to claim 4, characterized in that: The feeding bin (9) is butted against the side of the second roller (22) via an inclined guide portion.

7. The capsule feeding device according to claim 4, characterized in that: A first cleaning roller (101) is provided on the side of the first roller (21) opposite to the detection component (7), and a second cleaning roller (102) is provided on the side of the second roller (22) opposite to the feeding bin (9).

8. The capsule feeding device according to claim 1, characterized in that: A material level sensor (41) is provided on the slideway (4), and a gate (11) for controlling material discharge is provided at the discharge end of the silo (1).

9. The capsule feeding device according to claim 1, characterized in that: The vacuum roller (2) is connected to the drive motor (12) via a pneumatic slip ring (13), and the pneumatic slip ring (13) is connected to the vacuum equipment.

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