Empty bag detection device

Abstract

The utility model discloses an empty bag detection device which comprises a trough installation plate, a blocking mechanism, a pressing air cylinder installation frame, a controller and a plurality of pressing detection mechanisms, and the front side of the trough installation plate is sequentially provided with a plurality of guide troughs from left to right; the blocking mechanism comprises a blocking cylinder mounting frame, a blocking cylinder, a blocking frame mounting plate and a plurality of blocking frames; an optical fiber sensor is arranged on the front side of each blocking frame; the plurality of pressing detection mechanisms are sequentially arranged on the pressing air cylinder mounting frame from left to right; each pressing detection mechanism comprises a pressing air cylinder, a transition connecting frame, a mask pressing block, two pressing block guiding mechanisms and two thickness detection sensors. The blocking air cylinders, the optical fiber sensors, the pressing air cylinders and the thickness detection sensors communicate with the controller. The empty bag detection device can detect whether light-proof packaging bag products and aluminum foil packaging bag products are empty, is simple and compact in structure, and can greatly improve the detection efficiency and reduce the defective rate of the products.

Description

Technical Field

[0001] This utility model relates to an empty bag detection device. Background Technology

[0002] After freeze-drying, the membrane fabric undergoes folding, extrusion molding, tray placement, BFS water box assembly, bagging, and sealing. However, before sealing, various reasons can lead to uneven folding or failure to place the tray, preventing the proper insertion of the membrane fabric, BFS water box, and tray into the packaging bag. This results in missing masks, trays, and BFS water boxes within the packaging bag. If these missing bags cannot be automatically detected, they pose a serious quality risk when they reach subsequent production lines after sealing. Currently, detection is done manually by touch or weighing. However, touch is highly susceptible to human error and carries a high risk of missing defective products. Weighing is affected by the amount of BFS water and the relatively light weight of the membrane fabric, making it difficult to detect missing membrane fabric and increasing the risk of missing defective products. In particular, opaque packaging bags cannot pass visual inspection, and aluminum foil packaging bags cannot pass visual inspection or detection by invisible light rays or electromagnetic waves. Manual inspection for empty bags has low accuracy.

[0003] BFS is a continuous aseptic filling production technology that integrates the three processes of hot melt plastic preform blow molding, filling, and sealing on the same machine. It is also known as the three-in-one technology. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an empty bag detection device that can detect whether opaque packaging bags (which cannot be detected by visual inspection) and aluminum foil packaging bags (which cannot be detected by visual inspection or by invisible light rays, electromagnetic waves, etc.) are empty. The device has a simple and compact structure and can significantly improve detection efficiency and reduce product defect rate compared with existing manual inspection.

[0005] The technical solution to achieve the above objective is: an empty bag detection device, comprising a material trough mounting plate, a blocking mechanism, a pressing cylinder mounting bracket, a controller, and several pressing detection mechanisms, wherein:

[0006] The front side of the material trough mounting plate is provided with several guide troughs from left to right, and each guide trough is provided with a guide roller at its inlet.

[0007] The blocking mechanism includes a blocking cylinder mounting bracket, a blocking cylinder, a blocking bracket mounting plate, and several blocking brackets. The blocking cylinder mounting bracket is located on the front side of the guide trough and below the guide roller. The blocking bracket mounting plate is located behind the blocking cylinder mounting bracket. The blocking cylinder is installed in the middle of the blocking cylinder mounting bracket, and the output end of the blocking cylinder is connected to the blocking bracket mounting plate. Blocking bracket guide mechanisms are respectively provided on the left and right sides between the blocking cylinder mounting bracket and the blocking bracket mounting plate. The several blocking brackets are arranged sequentially from left to right at the bottom of the blocking bracket mounting plate, and the several blocking brackets are located at the outlets of the several guide troughs. Each blocking bracket has an optical fiber sensor on its front side, and the optical fiber sensor is mounted on the blocking cylinder mounting bracket.

[0008] The clamping cylinder mounting bracket is located below the material trough mounting plate, and the middle of the rear side of each guide material trough is connected to the clamping cylinder mounting bracket.

[0009] The plurality of clamping detection mechanisms are arranged sequentially from left to right on the clamping cylinder mounting bracket, and the plurality of clamping detection mechanisms are located in the middle of the plurality of guide material grooves in a corresponding manner.

[0010] Each pressing detection mechanism includes a pressing cylinder, a transition connecting frame, a mask pressing block, two pressing block guide mechanisms, and two thickness detection sensors. The pressing cylinder is mounted on the pressing cylinder mounting frame via the transition connecting frame. The output end of the pressing cylinder is connected to the mask pressing block, and the mask pressing block is located in front of the pressing cylinder. The two pressing block guide mechanisms are arranged one above the other on the transition connecting frame, and the front end of each pressing block guide mechanism is connected to the mask pressing block. The two thickness detection sensors are respectively located on the left and right sides of the pressing cylinder.

[0011] The blocking cylinder, fiber optic sensor, clamping cylinder, and thickness detection sensor communicate with the controller.

[0012] In the above-mentioned empty bag detection device, the top of the blocking cylinder mounting bracket has a fixed frame, and each guide trough is connected to the fixed frame through a trough mounting bracket assembly.

[0013] In the above-mentioned empty bag detection device, each blocking frame guide mechanism includes a blocking frame guide rail and a blocking frame guide bearing. The blocking frame guide bearing is mounted on the cylinder mounting bracket. The rear end of the blocking frame guide rail is connected to the blocking frame mounting plate, and the front end passes through the blocking frame guide bearing.

[0014] In the aforementioned empty bag detection device, the two thickness detection sensors are respectively fixed on the transition connecting frame via sensor mounting brackets.

[0015] In the above-mentioned empty bag detection device, the two pressure block guide mechanisms are located on the same side of the pressure cylinder.

[0016] In the above-mentioned empty bag detection device, each pressing block guiding mechanism includes a pressing block guide rail and a pressing block guide bearing. The pressing block guide bearing is mounted on the transition connecting frame through a bearing mounting bracket. One end of the pressing block guide rail is connected to the mask pressing block, and the other end passes through the pressing block guide bearing.

[0017] In the above-mentioned empty bag detection device, a compression spring is sleeved on the pressure block guide rail, and the compression spring is located between the mask pressure block and the pressure block guide bearing.

[0018] In the above-mentioned empty bag detection device, the bagged product falls along the guide roller into the corresponding guide trough. When the fiber optic sensor detects the bagged product, it sends a position signal to the controller. The controller controls the blocking cylinder to work, and the blocking cylinder drives the blocking frame to extend backward to block the bagged product.

[0019] The controller controls the pressing cylinder to operate. When the pressing cylinder extends forward, it drives the mask pressing block and the thickness detection sensor to press against the bagged product in the guide groove. The mask pressing block presses the bagged product tightly. The thickness detection sensor detects and acquires the thickness information of the corresponding position of the bagged product and sends the thickness information to the controller. The controller has built-in standard thickness data. The controller compares the received thickness information with the standard thickness data. If the thickness information does not match the standard thickness data, it is determined to be an empty bag; if the thickness information matches the standard thickness data, it is determined to be a qualified product.

[0020] After the test is completed, the controller controls the blocking cylinder and the pressing cylinder to return to their original positions.

[0021] In the aforementioned empty bag detection device, the controller feeds back the determination result to the subsequent heat sealing mechanism.

[0022] In the aforementioned empty bag detection device, one of the two thickness detection sensors is used to detect the thickness information of a bagged facial mask product containing a BFS water box; the other thickness detection sensor is used to detect the thickness information of a bagged facial mask product containing a freeze-dried membrane, a membrane support tray, or a pleated irregular membrane.

[0023] This utility model discloses an empty bag detection device. Through a thickness detection sensor working in conjunction with a blocking mechanism and a pressing detection mechanism, it measures the thickness of bagged products. The controller determines whether opaque packaging bags (which cannot be visually inspected) and aluminum foil packaging bags (which cannot be visually inspected or detected by invisible light rays, electromagnetic waves, etc.) are empty based on the thickness information of the bagged items at different locations. Currently, this utility model is used to detect freeze-dried mask sheets, mask sheet support trays, BFS water boxes, and irregularly shaped or wrinkled mask sheets. Bagged products that do not meet the requirements can be fed back to the subsequent heat-sealing mechanism, where they will not be sealed. Furthermore, they can be rejected with the assistance of a subsequent rejection mechanism, thereby ensuring product quality and reducing manual inspection costs. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram (front view) of the empty bag detection device of this utility model;

[0025] Figure 2 This is a three-dimensional structural diagram (rear view) of the empty bag detection device of this utility model;

[0026] Figure 3 This is a three-dimensional structural diagram (viewed from below) of the empty bag detection device of this utility model;

[0027] Figure 4 This is a front view of the empty bag detection device of this utility model;

[0028] Figure 5 This is a side view of the empty bag detection device of this utility model;

[0029] Figure 6 This is the electrical schematic diagram of the empty bag detection device of this utility model. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solution of this utility model, its specific embodiments will be described in detail below with reference to the accompanying drawings.

[0031] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 An embodiment of this utility model discloses an empty bag detection device, comprising a material trough mounting plate 2, a blocking mechanism, a pressing cylinder mounting bracket 3, a controller 25, and several pressing detection mechanisms. In this embodiment, the number of pressing detection mechanisms is three; in actual use, the number can be set according to needs.

[0032] Three guide troughs 1 are arranged sequentially from left to right on the front side of the trough mounting plate 2, and a guide roller 11 is provided at the entrance of each guide trough 1.

[0033] The blocking mechanism includes a blocking cylinder mounting bracket 22, a blocking cylinder 12, a blocking bracket mounting plate 21, and three blocking brackets 10. The blocking cylinder mounting bracket 22 is located on the front side of the guide trough 1 and below the guide roller 11; the top of the blocking cylinder mounting bracket 22 has a fixing bracket 16, and each guide trough 1 is connected to the fixing bracket 16 through the trough mounting bracket assembly 14.

[0034] The blocking frame mounting plate 21 is located behind the blocking cylinder mounting frame 22; the blocking cylinder 12 is installed in the middle of the blocking cylinder mounting frame 22, and the output end of the blocking cylinder 12 is connected to the blocking frame mounting plate 21; the left and right sides between the blocking cylinder mounting frame 22 and the blocking frame mounting plate 21 are respectively provided with blocking frame guide mechanisms. Specifically, each blocking frame guide mechanism includes a blocking frame guide rail 8 and a blocking frame guide bearing 9. The blocking frame guide bearing 9 is installed on the cylinder mounting frame 22, the rear end of the blocking frame guide rail 8 is connected to the blocking frame mounting plate 21, and the front end passes through the blocking frame guide bearing 9; the blocking frame guide bearing 9 adopts a ball linear bearing.

[0035] Three blocking frames 10 are arranged sequentially from left to right at the bottom of the blocking frame mounting plate 22, and each of the three blocking frames 10 is located at the outlet of one of the three guide troughs 1. Each blocking frame 10 has a fiber optic sensor 15 mounted on its front side, and the fiber optic sensor 15 is mounted on the blocking cylinder mounting bracket 22. The blocking cylinder 12 drives the blocking frame mounting plate 21 to extend and retract synchronously, and the blocking frame guiding mechanism ensures that each blocking frame 10 extends or retracts smoothly. The fiber optic sensor 15 is used to detect whether bagged products are passing through the corresponding guide trough 1.

[0036] The clamping cylinder mounting bracket 3 is located below the material trough mounting plate 2, and the middle of the rear side of each guide material trough 1 is connected to the clamping cylinder mounting bracket 3.

[0037] Three pressing detection mechanisms are arranged sequentially from left to right on the pressing cylinder mounting bracket 3, and are located in the middle of the three guide material troughs 1. Each pressing detection mechanism includes a pressing cylinder 4, a transition connecting bracket 23, a mask pressing block 13, two pressing block guiding mechanisms, and two thickness detection sensors, namely thickness detection sensor 5 and thickness detection sensor 17. The pressing cylinder 4 is mounted on the pressing cylinder mounting bracket 3 through the transition connecting bracket 23, and the output end of the pressing cylinder 4 is connected to the mask pressing block 13, and the mask pressing block 13 is located in front of the pressing cylinder 4. The two pressing block guiding mechanisms are arranged one above the other on the transition connecting bracket 23, and the front end of each pressing block guiding mechanism is connected to the mask pressing block 13. Specifically, the two pressing block guiding mechanisms are located on the same side of the pressing cylinder 4. Each pressing block guiding mechanism includes a pressing block guide rail 7 and a pressing block guide bearing 6. The pressing block guide bearing 6 is mounted on the transition connecting frame 23 via a bearing mounting bracket 19. One end of the pressing block guide rail 7 is connected to the mask pressing block 13, and the other end passes through the pressing block guide bearing 6. The pressing block guide bearing 6 is a ball linear bearing. The pressing block guiding mechanism allows the mask pressing block 13 to compact the mask and the tray supporting the mask sheet when pressing the bagged mask product, thereby ensuring the accuracy of the dimensions detected by the thickness detection sensor.

[0038] A compression spring 18 is fitted onto the pressure block guide rail 6, and the compression spring 18 is located between the mask pressure block 13 and the pressure block guide bearing 6. The compression spring 18 can ensure the compression and rebound of the mask pressure block 13 and ensure that the bagged mask product is not damaged.

[0039] Thickness detection sensor 5 and thickness detection sensor 17 are respectively fixed on transition connecting frame 23 by sensor mounting bracket 20, and thickness detection sensor 5 and thickness detection sensor 17 are respectively located on the left and right sides of clamping cylinder 4.

[0040] The blocking cylinder 12, fiber optic sensor 15, clamping cylinder 4, and thickness detection sensor communicate with the controller 25 respectively (see...). Figure 6 Of the two thickness detection sensors, thickness detection sensor 5 is used to detect the thickness information of the bagged mask product containing the BFS water box; thickness detection sensor 17 is used to detect the thickness information of the bagged mask product containing the freeze-dried mask sheet, the mask sheet support tray, or the irregularly pleated mask sheet.

[0041] In the empty bag detection device of this utility model, after the materials (freeze-dried film, film support tray, BFS water) are bagged, the bagged products fall along the guide roller 11 into the corresponding guide trough 1. When the fiber optic sensor 15 detects the bagged products, it sends a position signal to the controller 25. The controller 25 controls the blocking cylinder 12 to work. The blocking cylinder 12 drives the blocking frame 10 to extend backward to block the bagged products and prevent the bags from falling further.

[0042] Simultaneously, the controller 25 controls the pressing cylinder 4 to work. When the pressing cylinder 4 extends forward, it drives the mask pressing block 13, thickness detection sensor 5, and thickness detection sensor 17 to press against the bagged product in the guide trough 1. The mask pressing block 13 presses against the bagged product. Each thickness detection sensor detects and acquires the thickness information of the corresponding position of the bagged product and sends the thickness information to the controller 25. The controller 25 has built-in standard thickness data for different positions of the bagged product. The controller 25 compares the received thickness information with the standard thickness data. If the thickness information does not match the standard thickness data, it is determined to be an empty bag; if the thickness information matches the standard thickness data, it is determined to be a qualified product.

[0043] After the inspection is completed, the controller 25 controls the blocking cylinder 12 and the pressing cylinder 4 to return to their original positions, and the bagged product continues to move to the next station. The controller 25 feeds back the judgment result to the subsequent heat sealing mechanism. If it is an empty bag, the corresponding heat sealing mechanism will not operate, and the subsequent rejection mechanism will reject it; the rejected material can be manually put back into the cartoning machine for reuse.

[0044] In this utility model's empty bag detection device, the number of the pressing detection mechanism, the guide material trough 1, and the blocking frame 10 are the same, and can be set as needed. In this embodiment, there are three, which can simultaneously detect three bagged facial mask products. It can also be used for other opaque packaging bag products or aluminum foil packaging bag products.

[0045] In summary, the empty bag detection device of this utility model can detect whether opaque packaging bags (which cannot be detected by visual inspection) and aluminum foil packaging bags (which cannot be detected by visual inspection or by invisible light rays, electromagnetic waves, etc.) are empty. It has a simple and compact structure and can significantly improve detection efficiency and reduce product defect rate compared with existing manual inspection.

[0046] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any changes or modifications to the above embodiments within the scope of the essential spirit of the present utility model will fall within the scope of the claims of the present utility model.

Claims

1. A bag empty detection device characterized by comprising: Including trough mounting plate, blocking mechanism, compression cylinder mounting frame, controller and several compression detection mechanisms, wherein: The front side of the trough mounting plate is sequentially provided with several guide troughs from left to right, and a guide roller is arranged at the inlet of each guide trough; The blocking mechanism includes blocking cylinder mounting frame, blocking cylinder, blocking frame mounting plate and several blocking frames, the blocking cylinder mounting frame is arranged on the front side of the guide trough and below the guide roller; the blocking frame mounting plate is located behind the blocking cylinder mounting frame; the blocking cylinder is installed in the middle of the blocking cylinder mounting frame, and the output end of the blocking cylinder is connected with the blocking frame mounting plate; the left and right parts between the blocking cylinder mounting frame and the blocking frame mounting plate are respectively provided with blocking frame guide mechanisms; the several blocking frames are sequentially arranged at the bottom end of the blocking frame mounting plate from left to right, and the several blocking frames are one-to-one corresponding to the outlets of the several guide troughs; the front side of each blocking frame is provided with a fiber sensor, and the fiber sensor is arranged on the blocking cylinder mounting frame; The compression cylinder mounting frame is located below the trough mounting plate, and the middle part of the rear side of each guide trough is connected with the compression cylinder mounting frame; The several compression detection mechanisms are sequentially arranged on the compression cylinder mounting frame from left to right, and the several compression detection mechanisms are one-to-one corresponding to the middle parts of the several guide troughs; Each compression detection mechanism includes a compression cylinder, a transition connecting frame, a mask pressing block, two pressing block guide mechanisms and two thickness detection sensors, the compression cylinder is arranged on the compression cylinder mounting frame through the transition connecting frame, the output end of the compression cylinder is connected with the mask pressing block, and the mask pressing block is located in front of the compression cylinder; the two pressing block guide mechanisms are arranged one above the other on the transition connecting frame, and the front end of each pressing block guide mechanism is connected with the mask pressing block; the two thickness detection sensors are respectively arranged on the left and right sides of the compression cylinder; The blocking cylinder, the fiber sensor, the compression cylinder and the thickness detection sensor are respectively communicated with the controller.

2. The empty bag detection device according to claim 1, characterized in that The top end of the blocking cylinder mounting frame has a fixing frame, and each guide trough is connected with the fixing frame through a trough mounting frame group.

3. The empty bag detection device of claim 1, wherein Each blocking frame guide mechanism includes a blocking frame guide rail and a blocking frame guide bearing, the blocking frame guide bearing is installed on the cylinder mounting frame, the rear end of the blocking frame guide rail is connected with the blocking frame mounting plate, and the front end penetrates through the blocking frame guide bearing.

4. The empty bag detection device of claim 1, wherein The two thickness detection sensors are respectively fixed on the transition connecting frame through sensor mounting frames.

5. The empty pocket detection device of claim 1, wherein The two pressing block guide mechanisms are located on the same side of the compression cylinder.

6. The empty bag detection device according to claim 1 or 5, characterized in that Each pressing block guide mechanism includes a pressing block guide rail and a pressing block guide bearing, the pressing block guide bearing is arranged on the transition connecting frame through a bearing mounting frame, one end of the pressing block guide rail is connected with the mask pressing block, and the other end penetrates through the pressing block guide bearing.

7. The empty pocket detection device of claim 6, wherein The compression spring is sleeved on the pressing block guide rail and located between the face mask pressing block and the pressing block guide bearing.

8. The empty pocket detection device of claim 1, wherein When the bagged product falls into the corresponding guide chute along the guide roller, the optical fiber sensor sends a signal to the controller when detecting the bagged product, and the controller controls the blocking cylinder to work, and the blocking cylinder drives the blocking frame to extend backward to block the bagged product; The controller controls the pressing cylinder to work, and the pressing cylinder extends forward to drive the face mask pressing block and the thickness detection sensor to press the bagged product in the guide chute, the face mask pressing block presses the bagged product, the thickness detection sensor detects and obtains the thickness information of the corresponding position of the bagged product, and sends the thickness information to the controller, the controller is built-in with standard thickness data, the controller compares the received thickness information with the standard thickness data, if the thickness information does not match the standard thickness data, it is determined as empty bag; if the thickness information matches the standard thickness data, it is determined as qualified product; After detection, the controller controls the blocking cylinder and the pressing cylinder to return to the original position.

9. The empty pocket detection device of claim 8, wherein, The controller feeds back the determination result to the subsequent heat sealing mechanism.

10. The empty pocket detection device of claim 1, wherein, Among the two thickness detection sensors, one thickness detection sensor is used to detect the thickness information of the bagged face mask product with BFS water box; the other thickness detection sensor is used to detect the thickness information of the bagged face mask product with freeze-dried film cloth, film cloth bearing tray or irregular wrinkled film cloth.

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