A bag stacking machine

Abstract

This utility model provides a bag stacking machine, including an upper conveyor belt, an adjustable guide rail, a steering roller, a buffer unloading device, a feeding device, a bag stacking station adjustment device, and a controller. The adjustable guide rail consists of a base plate, a guide plate, and an adjusting component. The base plate connects to the upper conveyor belt, and the two guide plates are symmetrically arranged to form a guide channel with an adjustable width. The steering roller is suspended at the end of the guide channel. The support plate of the buffer unloading device opens and closes under the opening and closing drive, and a sensor detects the material. The lower conveyor belt of the feeding device has multiple bag stacking stations, which are driven intermittently forward by the conveying drive. In the bag stacking station adjustment device, the material feeding plate can move left and right, and a counter counts the material. The controller connects to all components and controls the opening and closing, material feeding, and conveying drive according to the sensor and counter signals. This bag stacking machine overcomes the problems of low efficiency and high labor intensity of manual stacking, as well as the inability of existing bag stacking machines to connect to production lines, complexity, and poor adaptability.

Description

[Technical Field]

[0001] This utility model relates to the field of food packaging machinery technology, specifically, a bag stacking machine. It is mainly suitable for automated stacking of bagged bread and other food products. [Background Technology]

[0002] In the food packaging industry, the subsequent handling and stacking of bagged products typically requires a significant amount of manual labor, especially for packaging perishable foods such as bread. With rising labor costs and increasing demand for automation, the development of food packaging machinery is receiving increasing attention.

[0003] Existing bagged product stacking technology mainly relies on manual stacking, where workers manually stack bagged products to a specified number of layers, which is labor-intensive and inefficient.

[0004] Currently, some automated equipment is available on the market for conveying and stacking bagged products, but most of these devices are highly complex, resulting in high mechanical costs, or they are standalone devices that cannot be directly integrated into production lines. Furthermore, they are still insufficient in terms of adaptability and efficiency to the size and shape of bagged products, making them difficult to popularize.

[0005] For example, Chinese invention patent CN112158647B discloses an automatic bag-stacking machine, which includes a symmetrical support platform, a bag-feeding platform installed in front of the support platform, a bag-pressing device installed above the bag-feeding platform, rotating bag-stacking devices symmetrically arranged on the left and right sides of the support platform, a linear slide rail installed in the middle of the support platform, a slider mounted on the linear slide rail, a main traction pneumatic finger installed at the front end of the slider, and a bag-stacking traction bracket installed at the rear of the support platform, with a bag-stacking traction cylinder installed on the bag-stacking traction bracket. It can work with the automatic bag-pulling device on the machine to pull the bags to the bag-feeding platform of the bag-stacking machine after the bags are made to complete the fully automatic bag-stacking operation, reducing labor costs. However, the automatic bag-stacking machine of this invention has high equipment complexity, resulting in high mechanical costs.

[0006] For example, Chinese Utility Model No. CN215794955U discloses a bag-stacking machine, comprising: a frame; a partition plate horizontally disposed inside the frame, dividing the frame into a first partition and a second partition; a folding device disposed in the first partition; and an air-blowing device disposed at the top of the frame; the air-blowing device inflates the packaging bag, causing it to bulge, and the folding device then folds it. This bag-stacking machine is a standalone piece of equipment and cannot be directly connected to a production line, thus preventing continuous production and leading to decreased efficiency.

[0007] Furthermore, the aforementioned bag-stacking machines are insufficient in terms of adaptability to the size and shape of bagged products. When the size and shape of the products change, the bag-stacking machine needs to be redesigned, increasing costs. [Utility Model Content]

[0008] Therefore, the technical problem to be solved by this utility model is to provide a bag stacking machine that overcomes the shortcomings of existing manual stacking machines, such as low efficiency and high labor intensity, or existing bag stacking machines that cannot be directly connected to the production line, high complexity and poor adaptability.

[0009] To achieve the aforementioned objective, the technical solution adopted in this utility model embodiment is: a bag stacking machine, comprising:

[0010] Upper conveyor belt;

[0011] An adjustable guide rail includes a base plate, two guide plates, and a plurality of adjusting components. The base plate is inclinedly connected to the end of the upper conveyor belt. The two guide plates are symmetrically arranged on the base plate and fixed by the adjusting components. A flow channel is formed between the two guide plates, and the width of the flow channel is adjusted by the adjusting components.

[0012] A steering roller is suspended at the end of the guide channel and at a steering height from the bottom plate;

[0013] A buffer material discharge device includes a support plate, an opening and closing drive, and a sensor; the support plate is horizontally disposed below the guide roller and opens or closes under the drive of the opening and closing drive, receiving material when closed and discharging material when open; the sensor is disposed on the support plate to sense whether the material is in place.

[0014] The feeding device includes a lower conveyor belt and a conveyor drive. The lower conveyor belt is located below the support plate and is provided with multiple bag stacking stations. It can intermittently advance a predetermined distance under the drive of the conveyor drive.

[0015] The bag stacking station adjustment device includes a material feeding plate, a material feeding drive, and a counter; the material feeding plate can move left and right a distance of one bag stacking station under the drive of the material feeding drive; the counter is used to count the material falling into the lower conveyor belt.

[0016] The controller is connected to the opening / closing drive, the sensor, the material feeding drive, the counter, and the conveying drive; it controls the opening / closing drive to operate according to the signal from the sensor, and controls the material feeding drive and the conveying drive to operate according to the preset layer number parameter and the signal from the counter.

[0017] Furthermore, the upper end of the guide plate is bent outward, giving the guide channel a funnel-shaped opening.

[0018] Furthermore, the adjusting component includes an internally threaded sleeve, an adjusting crossbar, and a rotating handle. The internally threaded sleeve is erected on the base plate, and the adjusting crossbar is radially inserted through the internally threaded sleeve, with its inner end connected to the guide plate. The lower end of the rotating handle is provided with an external thread, and when screwed into the internally threaded sleeve from top to bottom, it can abut against the adjusting crossbar.

[0019] The advantages of this utility model are:

[0020] 1. It adopts a seamless connection design between the upper conveyor belt and the adjustable guide rail, which can be directly connected to the end of the material packaging production line to realize the fully automated operation and eliminate manual intervention.

[0021] 2. Through the coordinated control of the buffer feeding device and the stacking bag station adjustment device, the material can be accurately positioned and quickly stacked, and the cycle of a single operation is shortened by more than 70% compared with manual operation.

[0022] 3. The unique adjustable guide rail system, through the mechanical structure of threaded sleeve and rotating handle, can complete the channel width adjustment within 30 seconds to adapt to the size changes of bagged materials;

[0023] 4. The flared design at the top of the guide plate effectively expands the material receiving range. Combined with the steering height adjustment function of the steering roller, it can adapt to the steering needs of packaging bags of different widths.

[0024] 5. A three-level sensor feedback mechanism (material arrival sensing + material feeding counting + conveyor belt start counting) is adopted, which, together with the PLC controller, enables precise control of material receiving, stacking layer number, and workstation switching, with an error rate of <0.01%.

[0025] 6. The feeding device automatically rotates the bag stacking station through a preset program, thereby supporting uninterrupted production;

[0026] 7. Modular structure design reduces equipment complexity and maintenance costs are 40% lower than similar equipment. [Attached Image Description]

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] Figure 1 This is a front view schematic diagram of the overall structure of the bag stacking machine of this utility model.

[0029] Figure 2 This is a side view of the overall structure of the bag stacking machine of this utility model.

[0030] Figure 3 This is a front view structural diagram of the adjustable guide rail of this utility model.

[0031] Figure 4This is a front view structural schematic diagram of the adjusting component of this utility model.

[0032] Figure 5 This is a schematic diagram of the support plate in the buffer material feeding device of this utility model.

[0033] Figure 6 This is a schematic diagram of the feeding device of this utility model.

[0034] Figure 7 This is a schematic diagram of the control principle of this utility model.

Detailed Implementation Methods

[0035] This utility model provides a bag stacking machine that overcomes the shortcomings of existing manual bag stacking machines, such as low efficiency and high labor intensity, inability to be directly connected to the production line, high complexity, and poor adaptability.

[0036] To address the aforementioned problems, the overall concept of this utility model is as follows: to realize a highly automated and adaptable bag-stacking machine, achieving seamless integration with the production line and efficient bag-stacking operations through a combination of modular design and intelligent control. Its core features include an adjustable guide rail system, precise stacking control, production line integration optimization, and multi-specification adaptability. This design, through the integration of mechanical structural innovation and intelligent control, significantly improves bag-stacking efficiency and size adaptability while maintaining the simplicity of the equipment.

[0037] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0038] Please see Figures 1 to 7 As shown, the bag stacking machine of this utility model includes an upper conveyor belt 1, an adjustable guide rail 2, a steering roller 3, a buffer material dropping device 4, a feeding device 5, a bag stacking station adjustment device 6, and a controller 7.

[0039] The upper conveyor belt 1 can be a conveyor belt on a material production line.

[0040] The adjustable guide rail 2 includes a base plate 21, two guide plates 22, and a plurality of adjusting members 23. The base plate 21 is inclinedly connected to the end of the upper conveyor belt 1. The two guide plates 22 are symmetrically arranged on the base plate 21 and fixed by the adjusting members 23. A flow channel 24 is formed between the two guide plates 22. The width of the flow channel 24 is adjusted by the adjusting members 23, thus making it suitable for materials of different specifications. The upper end of the guide plate 22 is bent outward, so that the flow channel 24 has a flared opening, allowing for a wider material collection angle.

[0041] The adjusting component 23 includes an internally threaded sleeve 231, an adjusting crossbar 232, and a rotating handle 233. The internally threaded sleeve 231 is erected on the base plate 21. The adjusting crossbar 232 passes radially through the internally threaded sleeve 231, and its inner end is connected to the guide plate 22. The lower end of the rotating handle 233 has an external thread, and when screwed into the internally threaded sleeve 231 from top to bottom, it can abut against the adjusting crossbar 232. When it is necessary to adjust the width of the guide channel 24, first adjust the depth of the adjusting crossbar 232 passing radially through the internally threaded sleeve 231, and then fix it by rotating the rotating handle 233.

[0042] The steering roller 3 is suspended at the end of the guide channel 24 by a bracket 32 ​​and at a steering height H away from the bottom plate 21; it is used to receive the material sliding down from the bottom plate 21 and to turn the material so that it can fall precisely into the range of the support plate 41.

[0043] The buffer material discharge device 4 includes a support plate 41, an opening / closing drive 42, and a sensor 43. The support plate 41 is horizontally positioned below the steering roller 3 and opens or closes under the drive of the opening / closing drive 42. When closed, it receives the material, and when open, it discharges the material. A baffle 411 may also be provided around the support plate 41 to limit the material flow. The opening / closing drive 42 can be a pneumatic drive or an electric linear drive. The sensor 43 can be a photoelectric sensor, located on the support plate 41, to sense whether the material has reached its designated position.

[0044] The feeding device 5 includes a lower conveyor belt 51 and a conveyor drive 52. The lower conveyor belt 51 is located below the support plate 41 and has multiple bag stacking stations. It can intermittently advance a predetermined distance under the drive of the conveyor drive 52. Preferably, a middle bag stacking station 511 can be set directly below the support plate 41, and a left bag stacking station 512 and a right bag stacking station 513 can be set on the left and right sides of the middle bag stacking station 511, so as to achieve three stacks at a time.

[0045] The bag stacking station adjustment device 6 includes a material feeding plate 61, a material feeding drive 62, and a counter 63; the material feeding plate 61 can move left and right along the slide rail 612 by a distance of one bag stacking station under the drive of the material feeding drive 62; the material feeding drive 62 can be implemented by a servo motor drive system or a pneumatic drive device, or by a stepper motor + ball screw mechanism. The counter 63 is used to count the material falling into the lower conveyor belt 51. Taking a three-fold stack as an example, the support plate 41 first stacks the material at the middle stacking station 511 during the opening and closing process. The counter 63 starts counting, and when the preset stacking quantity is reached, a signal is sent to the controller 7. The controller 7 controls the material feeding plate 61 to move the stacked material at the middle stacking station 511 to the left stacking station 512, thus freeing up the middle stacking station 511. After the middle stacking station 511 completes the stacking again, the counter 63 sends a signal to the controller 7. The controller 7 controls the material feeding plate 61 to move the stacked material at the middle stacking station 511 to the right stacking station 513, thus freeing up the middle stacking station 511 again. Then, the middle stacking station 511 performs the third stacking action. After completion, the lower conveyor belt 51 can be moved to achieve the next cycle of a three-fold stack.

[0046] The controller 7 is connected to the opening / closing drive 42, the sensor 43, the material feeding drive 62, the counter 63, and the conveying drive 52; it controls the opening / closing drive 42 to operate according to the signal from the sensor 43, and controls the material feeding drive 62 and the conveying drive 52 to operate according to the preset layer number parameter and the signal from the counter 63.

[0047] Controller 7 can be a PLC controller 7, whose PLC program uses state machine programming and establishes a working cycle according to the process of "detection-counting-pushing-reset": Material arrives, sensor triggers → control opening and closing drive 42 to operate → counter 63 counts by 1 → determine whether the set value of one stack has been reached → if so, start material feeding drive 62 to drive material feeding plate 61 to complete material feeding (it needs to be started twice to complete the left and right feeding) → counter 63 continues to count → determine whether the total quantity of three stacks has been reached → if so, start the conveying drive 52 of feeding device 5 → conveyor belt moves forward a certain distance to make room for a new stacking station → the reader is cleared and the cycle restarts.

[0048] The working process and working principle of this utility model:

[0049] I. Material sorting stage

[0050] 1. Feeding guidance: The material enters the adjustable guide rail 2 through the upper conveyor belt 1. The guide channel 24 (width adjustable) formed by the guide plate 22 oriented and sorts the material.

[0051] 2. Steering and positioning: The material slides along the inclined bottom plate 21 to the steering roller 3, and uses the height difference of the steering to achieve free fall steering, ensuring that it falls accurately onto the support plate 41 of the buffer feeding device 4.

[0052] II. Buffer Stacking Stage

[0053] 3. Support detection: When the support plate 41 is in the closed state, it supports the material. After the sensor detects that the material is in place, it sends a signal to the controller 7.

[0054] 4. Precise material drop: After receiving the arrival signal, the controller 7 controls the opening and closing drive 42 to open the support plate 41, allowing the material to fall freely to the middle bag stacking station 511 of the lower conveyor belt 51, and the support plate 41 closes again.

[0055] III. Workstation Adjustment Phase

[0056] 5. Counting and stacking: Counter 63 counts the number of materials dropped in real time. When the preset number of layers is reached, a signal is sent to controller 7. Material feeding drive 62 drives material feeding plate 61 to move laterally by one station distance to complete the material stacking.

[0057] 6. Three-level workstation rotation: The workstation switching logic of "middle → left side → right side → middle" is adopted, and three stacking of bags is achieved through two material feeding actions to ensure continuous production without interruption.

[0058] IV. Conveying Control

[0059] 7. Intermittent feeding: After three sets of stacked bags are completed, the conveyor drive 52 drives the lower conveyor belt 51 to advance intermittently a predetermined distance, freeing up a new stacking station.

[0060] 8. Cycle Restart: Rebuild the work cycle according to the above process to achieve seamless connection with the production line and complete the fully automated operation process from material feeding and sorting to precise stacking.

[0061] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A bag stacking machine, characterized in that: include: Upper conveyor belt; An adjustable guide rail includes a base plate, two guide plates, and a plurality of adjusting components. The base plate is inclinedly connected to the end of the upper conveyor belt. The two guide plates are symmetrically arranged on the base plate and fixed by the adjusting components. A flow channel is formed between the two guide plates, and the width of the flow channel is adjusted by the adjusting components. A steering roller is suspended at the end of the guide channel and at a steering height from the bottom plate; The buffer material feeding device includes a support plate, an opening and closing drive, and a sensor; The support plate is horizontally positioned below the steering roller and opens or closes under the action of the opening and closing drive. When closed, it receives the material, and when open, it allows the material to fall. The sensor is located on the support plate to detect whether the material is in place. The feeding device includes a lower conveyor belt and a conveyor drive. The lower conveyor belt is located below the support plate and is provided with multiple bag stacking stations. It can intermittently advance a predetermined distance under the drive of the conveyor drive. The bag stacking station adjustment device includes a material feeding plate, a material feeding drive, and a counter; the material feeding plate can move left and right a distance of one bag stacking station under the drive of the material feeding drive; the counter is used to count the material falling into the lower conveyor belt. The controller is connected to the opening / closing drive, the sensor, the material feeding drive, the counter, and the conveying drive; it controls the opening / closing drive to operate according to the signal from the sensor, and controls the material feeding drive and the conveying drive to operate according to the preset layer number parameter and the signal from the counter.

2. The bag stacking machine according to claim 1, characterized in that: The upper end of the guide plate is bent outward, giving the guide channel a funnel-shaped opening.

3. A bag stacking machine according to claim 1, characterized in that: The adjusting component includes an internally threaded sleeve, an adjusting crossbar, and a rotating handle. The internally threaded sleeve is erected on the base plate, and the adjusting crossbar is radially inserted through the internally threaded sleeve, with its inner end connected to the guide plate. The lower end of the rotating handle is provided with an external thread, and when screwed into the internally threaded sleeve from top to bottom, it can abut against the adjusting crossbar.

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