A polishing device for hard capsules

Abstract

The utility model provides a kind of polishing device for hard capsule, it is related to hard capsule polishing technical field, including visual inspection box, the visual inspection box signal connection has PLC control system, the PLC control system signal connection has export seat, the one end of the export seat is fixedly installed with the material guide flap that guides hard capsule is carried out.This utility model's advantage lies in: in the discharge end of polishing device, visual inspection box that is additionally provided to the visual inspection of hard capsule after polishing is carried out, while setting the export seat that is rotated to hard capsule in the bottom of visual inspection box, the rotation of hard capsule is transported using export seat, so that hard capsule can be completely visually inspected in the inside of visual inspection box, according to the result of visual inspection, material guide flap is rotated, according to the quality control hard capsule export direction of hard capsule, it is convenient to separate unqualified or damaged hard capsule, it is convenient to screen hard capsule after polishing, improve the convenience of hard capsule subsequent processing.

Description

Technical Field

[0001] This utility model relates to the field of hard capsule polishing technology, and in particular to a polishing device for hard capsules. Background Technology

[0002] In the pharmaceutical packaging industry, hard capsules are a common carrier for drug encapsulation, and their surface smoothness directly affects product quality and storage stability. Polishing equipment for hard capsules is specialized equipment used to remove residual powder (such as gelatin residue or adhering drug powder) from the capsule surface and improve surface smoothness. It cleans the capsule surface through friction and blowing, and is widely used in the post-processing stage of capsule production. It is a key piece of equipment to ensure the appearance of hard capsules meets standards and to avoid cross-contamination.

[0003] However, existing polishing devices are not convenient for inspecting the polished hard capsules during the polishing process, which can easily lead to the discharge of some unqualified or damaged hard capsules, making it difficult to screen the hard capsules and hindering subsequent processing. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a polishing device for hard capsules to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0005] To achieve the above objectives, one embodiment of this utility model provides a polishing device for hard capsules, including a feeding hopper for feeding hard capsules, a polishing cylinder for polishing hard capsules at the bottom of the feeding hopper, a vision inspection box for inspecting the polished hard capsules at one end of the polishing cylinder, a PLC control system for signal processing and automatic control of the vision inspection box, a delivery seat for conveying hard capsules, a guide flap for guiding hard capsules fixedly installed at one end of the delivery seat, a circulating guide frame for recycling hard capsules connected to the delivery seat on one side of the guide flap, a detachable circulating hopper fixedly installed at one end of the circulating guide frame, and a detachable clamping block for fixing the circulating hopper fixedly installed inside the circulating hopper.

[0006] Preferably, the polishing cylinder has a supporting fixing rod at the bottom, a feeding groove for installing and fixing the feeding hopper is opened at the top of one end of the polishing cylinder, and a guide groove for connecting to the vision inspection box is opened at the bottom of the other end of the polishing cylinder.

[0007] The above technical solution is adopted: the bottom fixing rod of the polishing cylinder (made of stainless steel) provides rigid support to ensure that there is no vibration or displacement during the polishing process. The top feed chute at one end (the size matches the outlet of the feeding hopper) enables the precise introduction of hard capsules and avoids capsule jamming. The bottom guide chute at the other end transports the polished capsules to the vision inspection box by gravity. The inner wall of the guide chute is smooth to reduce secondary wear on the capsule surface. The polishing cylinder is connected to the frame through the fixing rod to ensure coaxiality with the subsequent inspection and conveying structure.

[0008] Preferably, in any of the above embodiments, the visual inspection box includes a support inspection protective box and a camera lens assembly for image acquisition of the hard capsule. The inspection protective box is fixedly installed at one end of the polishing cylinder, and the camera lens assembly is fixedly installed inside the inspection protective box. The camera lens assembly is connected to the PLC control system via signal.

[0009] The above technical solution involves an optical imaging module consisting of an image processing module and a camera lens assembly inside the protective box. A control and execution module, formed by a guide flap, is connected to the image processing module, which is also connected to the PLC control system. The optical imaging module converts the optical information of the hard capsule surface into a processable image signal. The image processing module then uses software algorithms to process and analyze the acquired image, extracting target features and making judgments. Based on the judgment results of the image processing module, the external equipment formed by the guide flap performs corresponding operations, achieving a closed loop for automated detection and separation of the hard capsule. The visual inspection box, through the collaborative work of the optical imaging module capturing details, the image processing module analyzing features, and the control and execution module providing feedback, detects the surface features of the hard capsule and determines whether the hard capsule is intact.

[0010] Preferably, the export seat includes a guide seat for supporting and guiding the hard capsule, a drive motor connected to the PLC control system signal, and a conveying screw for conveying the hard capsule. The guide seat is fixedly installed at the bottom of the detection and protection box. A drive motor is fixedly installed at one end of the guide seat, and a conveying screw that rotates inside the guide seat is fixedly installed at one end of the drive motor.

[0011] The above technical solution is adopted as follows: the guide seat (made of polytetrafluoroethylene) provides a conveying channel for hard capsules to avoid scratching the capsule surface. The drive motor (stepper motor) is controlled by the pulse signal of the PLC control system, which drives the conveying screw (made of food-grade PP material, with a pitch equal to the capsule length) to rotate. The spiral groove on the surface of the screw fits the shape of the capsule to achieve orderly conveying in a single row. At the same time, the rotation of the screw drives the capsule to rotate, ensuring that the vision inspection box can collect images of the entire surface of the capsule. The PLC adjusts the motor speed according to the vision inspection results to match the inspection rhythm.

[0012] Preferably, in any of the above embodiments, the guide plate includes a flipping motor connected to a PLC control system signal and a flipping plate that encloses the guide seat. The flipping motor is fixedly installed inside the guide seat, and the output end of the flipping motor is fixedly installed with a flipping plate that rotates inside the guide seat.

[0013] The above technical solution is adopted as follows: After receiving the sorting signal from the PLC, the flipping motor (servo motor) drives the flipping plate (food-grade silicone coated stainless steel plate) to rotate at the guide seat outlet. When the capsule is detected as qualified, the PLC controls the flipping plate to rotate to a horizontal position (aligned with the guide seat outlet), and the capsule slides along its surface to the finished product channel. When the capsule is detected as unqualified, the flipping plate rotates to a vertical position, blocks the finished product channel and guides the capsule to fall into the circulating guide rack. The edges of the flipping plate are rounded to avoid capsule jamming or breakage.

[0014] Preferably, in any of the above embodiments, the circulating guide frame is fixedly installed at one end of the guide seat, and a connecting frame is provided at one end of the circulating guide frame to support and suspend it, and the connecting frame and the polishing cylinder are fixedly installed.

[0015] The above technical solution is adopted: the circulating guide rack (made of stainless steel) is suspended and fixed by the connecting frame (welded to the polishing cylinder), and the unqualified capsules are self-conveyed by gravity. The inner wall of the guide rack is smooth and has no right angle turns to avoid capsule accumulation. Its inlet is aligned with the outlet of the guide seat, and the outlet is sealed and connected to the circulating hopper to ensure that all unqualified capsules are recycled and provide a channel for secondary processing.

[0016] Preferably, in any of the above embodiments, the disassembly and assembly block includes a high-strength spring for support and a locking block for engaging and fixing the circulating hopper. The high-strength spring is fixedly installed inside the circulating hopper, and one end of the high-strength spring is fixedly installed with a locking block that moves inside the circulating hopper.

[0017] The above technical solution is adopted: under normal conditions, the high-strength spring pushes the locking block (nylon material) out of the surface of the circulating hopper and locks into the slot of the circulating guide frame to achieve quick fixation of the hopper. When disassembling, press the locking block to compress the spring, so that the locking block is disengaged from the slot and the hopper can be removed. The spring with strong fatigue resistance is selected to ensure that it can still provide reliable locking force after long-term use.

[0018] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0019] 1. A visual inspection box is added to the discharge end of the polishing device to perform visual inspection on the polished hard capsules. At the same time, an outlet seat is set at the bottom of the visual inspection box to rotate and convey the hard capsules. The rotational conveying of the hard capsules by the outlet seat allows the hard capsules to be completely visually inspected inside the visual inspection box. The rotation of the guide flap is controlled according to the visual inspection results, and the direction of hard capsule discharge is controlled according to the quality of the hard capsules. This facilitates the separation of unqualified or damaged hard capsules, facilitates the screening of polished hard capsules, and improves the convenience of subsequent processing of hard capsules.

[0020] 2. A circulating guide rack is installed on one side of the guide flap to guide unqualified or damaged hard capsules. The unqualified or damaged hard capsules are guided into the interior of the circulating hopper through the circulating guide rack. The circulating hopper can be disassembled and assembled by disassembly and assembly blocks, which facilitates the processing or recycling of the separated unqualified or damaged hard capsules and reduces material loss.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a schematic diagram of the structure according to an embodiment of the present utility model;

[0024] Figure 2 This is a partial exploded structural diagram according to an embodiment of the present utility model;

[0025] Figure 3 This is a cross-sectional structural diagram of the visual inspection box according to an embodiment of the present utility model;

[0026] Figure 4 This is a cross-sectional structural diagram of the circulating silo according to an embodiment of the present utility model;

[0027] Among them: 1-Feeding hopper, 2-Polishing cylinder, 3-Vision inspection box, 31-Inspection protection box, 32-Camera lens group, 4-Output seat, 41-Guide seat, 42-Drive motor, 43-Transmitting screw, 5-Guide flip plate, 51-Tilting motor, 52-Tilting plate, 6-Circulating guide frame, 7-Circulating hopper, 8-Disassembly and assembly block, 81-High-strength spring, 82-Locking block. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0029] like Figure 1-4 As shown, a polishing device for hard capsules according to an embodiment of the present invention includes a feeding hopper 1 for feeding hard capsules, a polishing cylinder 2 for polishing hard capsules at the bottom of the feeding hopper 1, a vision inspection box 3 for inspecting the polished hard capsules at one end of the polishing cylinder 2, a PLC control system for signal processing and automatic control of the vision inspection box 3, a delivery seat 4 for conveying hard capsules, a guide flap 5 for guiding hard capsules fixedly installed at one end of the delivery seat 4, a circulating guide frame 6 connected to the delivery seat 4 and for recycling hard capsules on one side of the guide flap 5, a detachable circulating hopper 7 fixedly installed at one end of the circulating guide frame 6, and a detachable clamping block 8 for fixing the circulating hopper 7 fixedly installed inside the circulating hopper 7.

[0030] Preferably, the polishing cylinder 2 has a supporting fixing rod at the bottom, a feeding groove for installing and fixing the feeding hopper 1 at the top of one end of the polishing cylinder 2, and a guide groove for connecting to the vision inspection box 3 at the bottom of the other end of the polishing cylinder 2.

[0031] The above technical solution is adopted: the bottom fixing rod of the polishing cylinder 2 (made of stainless steel) provides rigid support to ensure that there is no vibration or displacement during the polishing process. The top feed chute at one end (the size matches the outlet of the feed hopper 1) enables the precise introduction of hard capsules and avoids capsule jamming. The bottom guide chute at the other end transports the polished capsules to the vision inspection box 3 by gravity. The inner wall of the guide chute is smooth to reduce secondary wear on the capsule surface. The polishing cylinder 2 is connected to the frame through the fixing rod to ensure coaxiality with the subsequent inspection and conveying structure.

[0032] Preferably, the visual inspection box 3 includes a support inspection protective box 31 and a camera lens group 32 for image acquisition of the hard capsule. The inspection protective box 31 is fixedly installed at one end of the polishing cylinder 2. The camera lens group 32 is fixedly installed inside the inspection protective box 31 and is connected to the PLC control system signal.

[0033] The above technical solution is adopted: the internal structure of the protective box 31 is equipped with an optical imaging module consisting of an image processing module and a camera lens group 32. The control and execution module and the image processing module are connected by a guide flap, and the image processing module is also connected by a PLC control system. The optical imaging module converts the optical information of the hard capsule surface into a processable image signal. The image processing module then processes and analyzes the acquired image through software algorithms, extracts target features and makes a judgment. Based on the judgment result of the image processing module, the external equipment consisting of the guide flap 5 is controlled to perform corresponding operations, realizing a closed loop of automated detection and separation of hard capsules. The visual inspection box 3 achieves the detection of surface features of hard capsules through the collaborative work of "the optical imaging module capturing details, the image processing module analyzing features, and the control and execution module providing feedback actions", and determines whether the hard capsule is intact through detection.

[0034] Preferably, the delivery seat 4 includes a guide seat 41 for supporting and guiding the hard capsule, a drive motor 42 connected to the PLC control system signal, and a conveying screw 43 for conveying the hard capsule. The guide seat 41 is fixedly installed at the bottom of the detection and protection box 31. The drive motor 42 is fixedly installed at one end of the guide seat 41, and the conveying screw 43 that rotates inside the guide seat 41 is fixedly installed at the other end of the drive motor 42.

[0035] The above technical solution is adopted as follows: the guide seat 41 (made of polytetrafluoroethylene) provides a conveying channel for hard capsules to avoid scratching the capsule surface. The drive motor 42 (stepper motor) is controlled by the pulse signal of the PLC control system, which drives the conveying screw 43 (made of food-grade PP material, with a pitch equal to the capsule length) to rotate. The spiral groove on the surface of the screw fits the shape of the capsule to achieve orderly conveying in a single row. At the same time, the rotation of the screw drives the capsule to rotate, ensuring that the vision inspection box 3 can collect images of the entire surface of the capsule. The PLC adjusts the motor speed according to the vision inspection results to match the inspection rhythm.

[0036] Preferably, in any of the above schemes, the guide flap 5 includes a flip motor 51 connected to the PLC control system signal and a flip plate 52 that encloses the guide seat 41. The flip motor 51 is fixedly installed inside the guide seat 41, and the output end of the flip motor 51 is fixedly installed with the flip plate 52 that rotates inside the guide seat 41.

[0037] The above technical solution is adopted as follows: After receiving the sorting signal from the PLC, the flipping motor 51 (servo motor) drives the flipping plate 52 (food-grade silicone coated stainless steel plate) to rotate at the outlet of the guide seat 41. When the capsule is detected as qualified, the PLC controls the flipping plate to rotate to a horizontal position (aligned with the outlet of the guide seat), and the capsule slides along its surface to the finished product channel. When the capsule is detected as unqualified, the flipping plate rotates to a vertical position, blocks the finished product channel and guides the capsule to fall into the circulating guide rack 6. The edges of the flipping plate are rounded to avoid capsule jamming or breakage.

[0038] Preferably, in any of the above schemes, the circulating guide frame 6 is fixedly installed at one end of the guide seat 41, and a connecting frame is provided at one end of the circulating guide frame 6 to support and suspend it. The connecting frame and the polishing cylinder 2 are fixedly installed.

[0039] The above technical solution is adopted: the circulating guide frame 6 (made of stainless steel) is suspended and fixed by the connecting frame (welded to the polishing cylinder 2), and the unqualified capsules are self-conveyed by gravity. The inner wall of the guide frame is smooth and has no right angle turns to avoid capsule accumulation. Its inlet is aligned with the outlet of the guide seat 41, and the outlet is sealed and connected to the circulating hopper 7 to ensure that all unqualified capsules are recycled and provide a channel for secondary processing.

[0040] Preferably, the disassembly and assembly block 8 includes a high-strength spring 81 for support and a locking block 82 for engaging and fixing the circulating material bin 7. The high-strength spring 81 is fixedly installed inside the circulating material bin 7, and one end of the high-strength spring 81 is fixedly installed with the locking block 82 that moves inside the circulating material bin 7.

[0041] The above technical solution is adopted: under normal conditions, the high-strength spring 81 pushes the locking block 82 (nylon material) out of the surface of the circulating hopper 7 and locks into the slot of the circulating guide frame 6 to achieve quick fixation of the hopper. When disassembling, press the block to compress the spring, so that the block is disengaged from the slot and the hopper can be removed. A spring with strong fatigue resistance is selected to ensure that it can still provide reliable locking force after long-term use.

[0042] The working principle of the polishing device for hard capsules of this utility model is as follows:

[0043] Hard capsules enter polishing cylinder 2 from hopper 1. After internal polishing, they enter vision inspection box 3 through guide chute. Camera lens group 32 in inspection protection box 31 captures capsule images and transmits them to PLC control system. Qualified capsules are conveyed by guide seat 41 of export seat 4. Drive motor 42 drives conveying screw 43 to rotate and move capsules. PLC controls the flipping motor 51 of guide flip plate 5 to drive flip plate 52 to horizontal, and capsules are exported along it. Qualified capsules trigger flip plate 52 to flip to vertical, guiding capsules into circulating guide rack 6, which conveys them to circulating hopper 7. High-strength spring 81 of disassembly and assembly block 8 pushes locking block 82 to fix circulating hopper 7. When processing is required, the block can be removed by pressing.

[0044] Compared with the prior art, the present invention has the following advantages:

[0045] 1. A visual inspection box 3 is added to the discharge end of the polishing device to perform visual inspection on the polished hard capsules. At the same time, an outlet seat 4 is set at the bottom of the visual inspection box 3 to rotate and convey the hard capsules. The rotational conveying of the hard capsules by the outlet seat 4 allows the hard capsules to be completely visually inspected inside the visual inspection box 3. The guide flap 5 is controlled to rotate according to the visual inspection results. The direction of hard capsule discharge is controlled according to the quality of the hard capsules, which facilitates the separation of unqualified or damaged hard capsules and the screening of polished hard capsules, thereby improving the convenience of subsequent processing of hard capsules.

[0046] 2. A circulating guide frame 6 is set on one side of the guide flap 5 to guide unqualified or damaged hard capsules. The unqualified or damaged hard capsules are introduced into the circulating hopper 7 through the circulating guide frame 6. The circulating hopper 7 can be disassembled and assembled by the disassembly and assembly block 8, so as to facilitate the processing or recycling of the separated unqualified or damaged hard capsules and reduce material loss.

Claims

1. A polishing apparatus for hard capsules, comprising a feeding hopper (1) for feeding hard capsules, wherein a polishing cylinder (2) for polishing hard capsules is provided at the bottom of the feeding hopper (1), characterized in that: One end of the polishing cylinder (2) is provided with a visual inspection box (3) for inspecting the polished hard capsules. The visual inspection box (3) is connected to a PLC control system for signal processing and automatic control. The PLC control system is connected to an outlet seat (4) for conveying the hard capsules. One end of the outlet seat (4) is fixedly installed with a guide flap (5) for guiding the hard capsules. One side of the guide flap (5) is provided with a circulating guide frame (6) connected to the outlet seat (4) and for recycling the hard capsules. One end of the circulating guide frame (6) is fixedly installed with a removable circulating hopper (7). The inside of the circulating hopper (7) is fixedly installed with a disassembly and assembly clip (8) for fixing it.

2. The polishing apparatus for hard capsules as described in claim 1, characterized in that: The bottom of the polishing cylinder (2) is provided with a fixed rod for support. The top of one end of the polishing cylinder (2) is provided with a feeding groove for installing and fixing the feeding hopper (1). The bottom of the other end of the polishing cylinder (2) is provided with a guide groove connected to the vision inspection box (3).

3. The polishing apparatus for hard capsules as described in claim 2, characterized in that: The visual inspection box (3) includes a support inspection protective box (31) and a camera lens group (32) for image acquisition of hard capsules. The inspection protective box (31) is fixedly installed at one end of the polishing cylinder (2). The camera lens group (32) is fixedly installed inside the inspection protective box (31). The camera lens group (32) is connected to the PLC control system signal.

4. The polishing apparatus for hard capsules as described in claim 3, characterized in that: The export seat (4) includes a guide seat (41) for supporting and guiding the hard capsule, a drive motor (42) connected to the PLC control system signal, and a conveying screw (43) for conveying the hard capsule. The guide seat (41) is fixedly installed at the bottom of the detection and protection box (31). The drive motor (42) is fixedly installed at one end of the guide seat (41), and the conveying screw (43) that rotates inside the guide seat (41) is fixedly installed at one end of the drive motor (42).

5. The polishing apparatus for hard capsules as described in claim 4, characterized in that: The guide plate (5) includes a flip motor (51) connected to the PLC control system signal and a flip plate (52) that closes the guide seat (41). The flip motor (51) is fixedly installed inside the guide seat (41), and the output end of the flip motor (51) is fixedly installed with a flip plate (52) that rotates inside the guide seat (41).

6. The polishing apparatus for hard capsules as described in claim 5, characterized in that: The circulating guide frame (6) is fixedly installed at one end of the guide seat (41). One end of the circulating guide frame (6) is provided with a connecting frame for supporting and suspending it. The connecting frame and the polishing cylinder (2) are fixedly installed.

7. The polishing apparatus for hard capsules as described in claim 6, characterized in that: The disassembly and assembly block (8) includes a high-strength spring (81) for support and a locking block (82) for engaging and fixing the circulating hopper (7). The high-strength spring (81) is fixedly installed inside the circulating hopper (7), and one end of the high-strength spring (81) is fixedly installed with a locking block (82) that moves inside the circulating hopper (7).

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