Apparatus for sealing and collating bags on a packaging line

Abstract

The utility model provides a device for packing line machine seals and bagging, its technical scheme is: including motor, speed reducer and drum conveyer belt, motor's output and speed reducer's input fixed connection, speed reducer's output and drum conveyer belt's driving drum connection, the both sides of drum conveyer belt be equipped with rack, be equipped with detection mechanism, bracing piece assembly and heat seal assembly on the rack, the drum conveyer belt's drum below be equipped with fender assembly, and the drum conveyer belt is used for transporting carton. The utility model has the beneficial effects that: (1) accurately identify bagging state, improve sealing quality stability; (2) reduce manual intervention, improve production efficiency; (3) abnormal state alarm in time, reduce quality risk; (4) collaborative action optimizes bagging precision, strengthens sealing effect; (5) the low transformation cost is strong in adaptability.

Description

Technical Field

[0001] This utility model belongs to the technical field of heat-sealing packaging equipment, and in particular relates to a device for machine sealing and bag sorting in packaging lines. Background Technology

[0002] In automated packaging production lines, the bag-sorting stage of the sealing machine is a crucial process that determines sealing quality and production continuity. The accuracy of bag sorting directly affects the positioning of the plastic bags. If the bag is not fully unfolded, its corners are folded, or its position is offset, subsequent sealing processes will result in poor sealing, wrinkles, and missed seals, ultimately affecting the product packaging's airtightness and aesthetics. However, existing sealing and bag-sorting devices mostly rely on mechanical structures to complete the sorting action according to a fixed program, lacking the ability to intelligently identify and dynamically adjust the real-time status of the bag sorting, leading to numerous pain points in the production process:

[0003] (1) Bag handling status recognition is missing, and sealing quality is unstable.

[0004] Existing devices only use mechanical struts or levers to programmatically push the bag, unable to sense whether the bag is fully unfolded, or whether there are wrinkles or misalignment. When the plastic bag is not properly positioned due to electrostatic adsorption, uneven material filling, or other reasons (such as folded corners, asymmetry on both sides, or misalignment of the bag opening with the sealing line), the device still seals it according to the preset program, directly leading to misalignment of the sealing position (such as partial unsealed bag or crooked sealing line), insecure heat sealing at wrinkles, and even quality problems such as bag breakage and leaks, seriously affecting product quality.

[0005] (2) Reliance on manual intervention leads to low production efficiency.

[0006] Due to the lack of automatic identification capabilities, frequent manual inspections of the bag-sorting and sealing processes are required. When bag misalignment or wrinkles are detected, the machine must be stopped, the bag position manually adjusted, and the production line restarted. For batches of bag-sorting anomalies, unqualified products must be manually screened and reworked. This "mechanical operation + manual error correction" model not only interrupts production continuity and reduces output per unit time, but also requires dedicated inspection personnel, significantly increasing labor costs.

[0007] (3) The abnormal alarm mechanism is missing, and the problem accumulates and expands.

[0008] The existing equipment lacks a real-time alarm function for bag-sorting abnormalities. When bags are not sorted properly, the equipment provides no warning signal, making it difficult for operators to detect the problem in a timely manner. If the abnormal state persists, it will lead to the production of a batch of defective products, increasing the workload of subsequent sorting and rework. If the missorting of bags causes mechanical jamming (such as the pleated bag getting caught in the equipment), it may also cause the equipment to overload and shut down, or even damage the transmission components, further extending the production downtime.

[0009] (4) The feedback mechanism is not intuitive and the handling of anomalies is lagging.

[0010] The status information of the bag handling process (such as whether it is in place and the degree of deviation) lacks visual feedback. Operators need to observe closely to judge the status, making it difficult to achieve remote monitoring or early warning. Even if an anomaly is found, it is necessary to check the mechanical structure, bag characteristics, etc. one by one, which increases the time for problem localization and affects the rapid recovery of the production line.

[0011] (5) The new solution is too expensive and has limited adaptability.

[0012] Some high-end production lines have attempted to use AI video monitoring systems to identify the bag sorting status, but this requires the configuration of high-definition cameras, image algorithm modules, and dedicated control units. Not only is the initial investment large (high hardware and system integration costs), but the algorithm model also needs to be maintained regularly to adapt to different sizes of plastic bags. For small and medium-sized production lines or scenarios with frequent switching between multiple product types, the economic efficiency and practicality are insufficient.

[0013] Therefore, in response to the pain points of existing devices such as "lack of identification, lack of alarms, reliance on manual labor, and high cost", there is an urgent need for a machine sealing bag sorting status detection device that can accurately identify the bag sorting status, provide immediate alarms when abnormalities occur, and has low modification costs, so as to improve the stability of sealing quality, reduce manual intervention, ensure production continuity, and meet the high-efficiency and low-cost requirements of automated packaging production lines. Summary of the Invention

[0014] To address the problems in the prior art, this utility model provides a device for machine sealing and bag sorting in a packaging line. The technical solution includes a motor, a reducer, and a roller conveyor belt. The output end of the motor is fixedly connected to the input end of the reducer, and the output end of the reducer is connected to the drive roller of the roller conveyor belt. Frames are provided on both sides of the roller conveyor belt, and the frames are equipped with a detection mechanism, a support rod assembly, and a heat sealing assembly. A stop block assembly is provided below the rollers of the roller conveyor belt. The roller conveyor belt is used to transport cartons.

[0015] In a preferred embodiment, the detection mechanism includes a first photoelectric sensor transmitter, a second photoelectric sensor transmitter, a first photoelectric sensor receiver, and a second photoelectric sensor receiver. The first photoelectric sensor transmitter and the first photoelectric sensor receiver are respectively located on both sides of the frame, forming an opposing optical path. The second photoelectric sensor transmitter and the second photoelectric sensor receiver are also respectively located on both sides of the frame, forming an opposing optical path.

[0016] In a more preferred embodiment, the first photoelectric sensor receiver and the second photoelectric sensor receiver are electrically connected to the alarm device.

[0017] In a more preferred embodiment, the horizontal distance between the first photoelectric sensor transmitter and the second photoelectric sensor transmitter is the same as the width of the packaging bag inside the carton after it is opened, and is used to detect whether the packaging bag is opened in place.

[0018] In a preferred embodiment, the detection mechanism further includes a normally open photoelectric sensor, which is electrically connected to the stop assembly and is used to detect the position of the carton and control the stop assembly to block the carton. When the heat sealing assembly completes the heat sealing and sends a signal, the stop assembly releases the carton.

[0019] In a preferred embodiment, the strut assembly includes three struts arranged parallel to each other. The middle strut also integrates a vacuum nozzle, which is connected to an external vacuum pump via a pipe. This vacuum nozzle is used to evacuate the inside of the packaging bag after the strut assembly has supported the packaging bag.

[0020] In a more preferred embodiment, the frame is provided with a heat sealing assembly directly below the support assembly. When the support assembly supports the packaging bag inside the carton, the heat sealing assembly heat seals the packaging bag.

[0021] The beneficial effects of this utility model are:

[0022] (1) The device forms a beam path through the first photoelectric sensor and the second photoelectric sensor. The horizontal distance between them matches the width of the packaging bag after it is opened. It can detect in real time whether the bag is fully opened and whether the position is offset. When the bag is not properly positioned (such as the bag is wrinkled or the corners are not unfolded), the sensor can immediately identify the abnormal status and avoid problems such as the seal position offset and wrinkle leakage caused by the positioning deviation, thus ensuring the consistency of the sealing quality from the source.

[0023] (2) The detection mechanism works in conjunction with the block assembly and the heat sealing assembly. After the normally open photoelectric sensor detects that the carton has reached the designated position, it automatically controls the block assembly to block the carton, ensuring that the bag sorting and sealing processes are accurately aligned. After the heat sealing is completed, the block assembly automatically releases the carton according to the heat sealing signal, realizing the full automation of the "conveying-bag sorting-detection-sealing-release" process. No manual inspection or adjustment is required, which reduces production interruption time and significantly improves the continuous operation efficiency of the production line.

[0024] (3) The first and second photoelectric sensors are electrically connected to the alarm device. When the alarm device detects that the bag is not in place, it will issue a reminder and promptly notify the operator to handle the abnormality. This avoids the production of batches of defective products caused by the lack of an alarm mechanism in the existing equipment, while reducing material waste and equipment idle wear and tear, and ensuring production continuity.

[0025] (4) The three parallel struts of the strut assembly can stably open the bag body. The vacuum nozzle integrated in the middle strut will draw a vacuum after the bag body is opened (the heat sealing assembly will pre-heat seal the bag body first), further eliminating wrinkles and fixing the bag shape. The heat sealing assembly is located directly below the strut assembly and completes the heat sealing when the bag body is in the best unfolded state, forming a coordinated process of "opening-shaping-sealing", which greatly reduces the sealing failure rate.

[0026] (5) The photoelectric sensor is used as the core of detection, replacing the expensive AI video monitoring system. While ensuring detection accuracy, the transformation cost is significantly reduced. Moreover, the device has a simple structure and can be directly integrated into the existing automated packaging production line. No large-scale equipment transformation is required. It is suitable for bag sorting and sealing scenarios of different specifications of packaging bags and has strong practicality. Attached Figure Description

[0027] Figure 1 This is a top view of the present invention.

[0028] Figure 2 This is a front view of the frame in this utility model.

[0029] In the diagram: 1. Roller conveyor belt; 2. Frame; 3. First photoelectric sensor transmitter; 4. Second photoelectric sensor transmitter; 5. Alarm device; 6. Normally open photoelectric sensor; 7. Stop assembly; 8. Motor; 9. Reducer; 10. Support assembly; 11. Heat sealing assembly; 12. Carton; 13. First photoelectric sensor receiver; 14. Second photoelectric sensor receiver. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0031] Example

[0032] like Figure 1 The device shown for machine sealing and bag sorting in a packaging line includes a motor 8, a reducer 9, and a roller conveyor belt 1. The output end of the motor 8 is fixedly connected to the input end of the reducer 9 via a coupling. The output end of the reducer 9 is connected to the drive roller of the roller conveyor belt 1 via a coupling. The roller conveyor belt 1 has frames 2 on both sides. The frames 2 are equipped with a detection mechanism, a support rod assembly 10, and a heat sealing assembly 11. A stop block assembly 7 is provided below the roller of the roller conveyor belt 1. The roller conveyor belt 1 is used to transport cartons 12.

[0033] Furthermore, the detection mechanism includes a first photoelectric sensor transmitter 3, a second photoelectric sensor transmitter 4, a first photoelectric sensor receiver 13, and a second photoelectric sensor receiver 14. The first photoelectric sensor transmitter 3 and the first photoelectric sensor receiver 13 are respectively disposed on both sides of the frame 2, forming an opposing optical path. The second photoelectric sensor transmitter 4 and the second photoelectric sensor receiver 14 are respectively disposed on both sides of the frame 2, forming an opposing optical path.

[0034] The first photoelectric sensor transmitter 3 and the second sensor transmitter 4 continuously emit light to the first photoelectric sensor receiver 13 and the second photoelectric sensor receiver 14. When the packaging bag inside the carton 12 is fully opened by the support rod assembly 10, the light paths of the photoelectric sensors on both sides are blocked, indicating that the bag sorting is successful. At this time, the subsequent heat sealing operation is performed. When the packaging bag inside the carton 12 is not fully opened by the support rod assembly 10, that is, the light paths of the photoelectric sensors are not blocked, it means that the bag is not fully unfolded or its position is offset, and there is a problem with the bag sorting operation. At this time, the subsequent heat sealing operation is not performed.

[0035] Furthermore, the first photoelectric sensor receiver 13 and the second photoelectric sensor receiver 14 are electrically connected to the alarm device 5.

[0036] When the control system detects that the light path of the through-beam is not completely blocked for an extended period of time, the control system will activate the alarm device 5 to issue a light and sound warning, prompting staff to address the problem promptly.

[0037] Furthermore, the horizontal distance between the first photoelectric sensor transmitter 3 and the second photoelectric sensor transmitter 4 is the same as the width of the inner packaging bag of the carton 12 after it is opened, which is used to detect whether the packaging bag is opened in place.

[0038] When performing bag sorting operations, if at least one set of photoelectric paths is not blocked, the control system can determine that the packaging bag has not been opened in place.

[0039] Furthermore, the detection mechanism also includes a normally open photoelectric sensor 6, which is electrically connected to the stop assembly 7. The normally open photoelectric sensor 6 is used to detect the position of the carton 12 and control the stop assembly 7 to block the carton. When the heat sealing assembly 11 completes the heat sealing and sends a signal, the stop assembly 7 releases the carton 12.

[0040] Normally open photoelectric sensor 6 continuously emits light. When carton 12 reaches the designated position, it reflects the light back to normally open photoelectric sensor 6. Normally open photoelectric sensor 6 then sends a signal to the control system. The control system controls the stop assembly 7 to extend the stop to block the carton. After heat sealing is completed, the stop retracts to release carton 12. The cylinder used in the stop assembly 10 is SMC-RSDQB40-30DBZ, which realizes the extension and retraction of the stop.

[0041] like Figure 2 The strut assembly 10 shown includes three struts arranged parallel to each other. The middle strut also integrates a vacuum nozzle, which is connected to an external vacuum pump through a pipe. This vacuum nozzle is used to evacuate the inside of the packaging bag after the strut assembly 10 supports the packaging bag.

[0042] The movement of the strut assembly 10 is accomplished by two sets of cylinders. The cylinder that moves up and down to insert into the packaging bag is model SMC-MGP-M25-1252, and the cylinder that opens the packaging bag left and right is model SMC-CDM3L25-250. The two sets of cylinders enable the strut to move in four directions.

[0043] Furthermore, the frame 2 is provided with a heat sealing assembly 11 directly below the support rod assembly 10. When the support rod assembly 10 supports the packaging bag inside the carton 12, the heat sealing assembly 11 heat seals the packaging bag.

[0044] The heat sealing assembly is manufactured by Changzhou Tiansheng Zijin Automation Equipment Co., Ltd., and its model number is T0-2300. It enables heat sealing of packaging bags.

[0045] The operation of the above-mentioned device is as follows: A carton 12 containing an unsealed packaging bag is placed at the input end of the roller conveyor belt 1 and transported into the frame 2 by the conveyor belt. When the carton 12 reaches the detection area of ​​the normally open photoelectric sensor 6, the surface of the carton reflects light to the sensor receiving end, and the sensor immediately sends a signal to the control system. After receiving the signal, the control system extends the cylinder of the control block assembly 7, the block rises and blocks the carton 12, so that the carton stops precisely below the working area of ​​the support rod assembly 10 and the heat sealing assembly 11. After the carton is positioned, the cylinder of the support rod assembly 10 moves up and down, driving the three parallel support rods to move downwards and precisely insert them into the packaging bag inside the carton 12. The cylinders in the left and right directions move, causing the two side support rods to open outwards, while the middle support rod remains stationary, opening the packaging bag from the inside to the preset width. After opening, the control system first sends a preheat sealing signal to the heat sealing assembly 11. The heat-sealing assembly 11 rises from directly below to perform preliminary pre-heat sealing on the edges of the packaging bag, sealing only a portion of the bag opening edge to form a temporary seal and prevent gas leakage during subsequent vacuuming. After pre-heat sealing, the heat-sealing assembly returns to its initial position. The vacuum nozzle on the central support rod activates, using the temporary sealed space created by the pre-heat sealing to vacuum the inside of the packaging bag, eliminating wrinkles and ensuring the bag fits snugly against the contents, guaranteeing a flat surface for subsequent heat sealing. The first and second photoelectric sensors detect whether the packaging bag is fully open. If both light paths are blocked, the bag handling is deemed successful, and the final heat sealing begins; if the light paths are not fully blocked, alarm device 5 is triggered, pausing the process for manual intervention. After successful bag handling, the heat-sealing assembly 11 rises again to perform final heat sealing on the pre-heat sealed area of ​​the packaging bag, ensuring a secure seal. After heat sealing, the heat-sealing assembly resets and sends a heat-sealing completion signal. Upon receiving the heat-sealing completion signal, the control system retracts the control block assembly 7, the carton leaves with the conveyor belt, and the device resets to await the next cycle.

Claims

1. An apparatus for sealing and sorting bags in a packaging line, comprising a motor (8), a reducer (9), and a roller conveyor belt (1), wherein the output end of the motor (8) is fixedly connected to the input end of the reducer (9), and the output end of the reducer (9) is connected to the drive roller of the roller conveyor belt (1), characterized in that, The roller conveyor belt (1) is provided with a frame (2) on both sides. The frame (2) is provided with a detection mechanism, a support rod assembly (10) and a heat sealing assembly (11). A stop block assembly (7) is provided below the roller of the roller conveyor belt (1). The roller conveyor belt (1) is used to transport cartons (12).

2. The apparatus for machine sealing and bag sorting in a packaging line according to claim 1, characterized in that, The detection mechanism includes a first photoelectric sensor transmitter (3), a second photoelectric sensor transmitter (4), a first photoelectric sensor receiver (13), and a second photoelectric sensor receiver (14). The first photoelectric sensor transmitter (3) and the first photoelectric sensor receiver (13) are respectively located on both sides of the frame (2) and form a beam path. The second photoelectric sensor transmitter (4) and the second photoelectric sensor receiver (14) are respectively located on both sides of the frame (2) and form a beam path.

3. The apparatus for sealing and bag sorting in a packaging line according to claim 2, characterized in that, The first photoelectric sensor receiver (13) and the second photoelectric sensor receiver (14) are electrically connected to the alarm device (5).

4. The apparatus for machine sealing and bag sorting in a packaging line according to claim 2, characterized in that, The horizontal distance between the first photoelectric sensor transmitter (3) and the second photoelectric sensor transmitter (4) is the same as the width of the inner packaging bag of the carton (12) after it is opened, and is used to detect whether the packaging bag is opened in place.

5. The apparatus for sealing and bag sorting in a packaging line according to claim 1, characterized in that, The detection mechanism also includes a normally open photoelectric sensor (6), which is electrically connected to the stop assembly (7) to detect the position of the carton (12) and control the stop assembly (7) to block the carton. When the heat sealing assembly (11) completes the heat sealing and sends a signal, the stop assembly (7) releases the carton (12).

6. The apparatus for machine sealing and bag sorting in a packaging line according to claim 1, characterized in that, The strut assembly (10) includes three struts arranged parallel to each other. The middle strut also integrates a vacuum nozzle, which is connected to an external vacuum pump through a pipe. It is used to vacuum the inside of the packaging bag after the strut assembly (10) supports the packaging bag.

7. The apparatus for sealing and bag sorting in a packaging line according to claim 6, characterized in that, The frame (2) is provided with a heat sealing assembly (11) directly below the support rod assembly (10). When the support rod assembly (10) supports the packaging bag in the carton (12), the heat sealing assembly (11) heat seals the packaging bag.

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