A bag cleaning device for unpacking machines

Abstract

This utility model belongs to the field of unpacking machines, specifically relating to a bag cleaning device for unpacking machines. In this utility model, material bags enter the dust collection hood via a bag conveyor line. Upon entry, a second sensor installed on the equipment is triggered, activating the second air knife assembly. A thin sheet of air is blown out through the gap between the rollers to clean the lower part of the bag. When the second sensor detects incoming material, the bag leaves the second air knife assembly, which then stops working. The first and third air knife assemblies are activated, blowing out thin sheets of air to clean the upper part and sides of the bag. While the air knife assemblies are working, the bag conveyor line is continuously conveying the bag. When the bag leaves the first and third air knife assemblies, and the first sensor no longer detects the bag, the first and third air knife assemblies stop working, or stop working after a certain delay.

Description

Technical Field

[0001] This utility model belongs to the field of unpacking machines, specifically relating to a bag cleaning device for unpacking machines. Background Technology

[0002] Packaging unpacking machines are mainly used for unpacking various bagged products. Previously, semi-automatic unpacking machines were primarily used, requiring manual control of the unpacking and unloading processes. This necessitated teamwork and resulted in high labor intensity, low efficiency, and potential for injury and environmental pollution. Furthermore, these machines were sometimes used to unpack products with pungent odors, such as urea fertilizers, which could cause occupational diseases due to close contact with the human body. Later, several newer types of packaging unpacking machines were developed, such as spiral unpacking machines, multi-blade unpacking machines, and saw blade unpacking machines.

[0003] Before unpacking materials in the food, medical, and chemical industries, unpacking machines need to clean the outer surface of the bags to prevent dust and debris from contaminating the materials. Existing bag cleaning methods have low cleaning efficiency, and because the cleaning of the bags is exposed to the outside, there is a lot of dust in the workshop.

[0004] In view of this, there is an urgent need for a bag cleaning machine. Utility Model Content

[0005] In view of the problems in the prior art, this utility model provides a bag cleaning device for unpacking machines to solve the problems in the prior art.

[0006] To achieve the above technical objectives, the technical solution of this utility model is as follows:

[0007] A bag cleaning device for unpacking and unpacking includes a frame, on which a bag conveyor line, a first air knife assembly, a second air knife assembly, and a dust removal hood are provided. One side of the dust removal hood is provided with a bag inlet, and the other side is provided with a bag outlet. The dust removal hood is provided with a dust removal interface, and the dust removal interface is connected to a dust collection device.

[0008] The bag conveyor line enters the dust collector hood from the bag inlet and exits the dust collector hood from the bag outlet.

[0009] The first air knife assembly and the second air knife assembly are both horizontally arranged inside the dust collection hood. The first air knife assembly is arranged above the bag conveyor line, and the second air knife assembly is arranged below the bag conveyor line.

[0010] The first air knife assembly is located on the side near the bag outlet, and the air outlet direction of the first air knife assembly is inclined downward towards the bag inlet.

[0011] There are two first air knife components. The two first air knife components are arranged side by side along the direction perpendicular to the bag conveying direction. A third air knife component is provided on the side of the two first air knife components that is far away from each other. The two third air knife components extend downward at an angle from one side of the first air knife component to the side that is far away from each other.

[0012] The frame has two vertically mounted first mounting brackets on both sides, and the two first air knife assemblies are respectively mounted on the two first mounting brackets.

[0013] The second air knife assembly is located on the side near the bag inlet, and the air outlet direction of the second air knife assembly is inclined upward towards the bag outlet.

[0014] The frame is provided with a second mounting bracket, and the second air knife assembly is mounted on the second mounting bracket.

[0015] The bag conveyor line includes a drive assembly and several rollers, which are arranged side by side on the frame. The drive assembly is used to drive the rollers to rotate synchronously in the same direction.

[0016] The roller is covered with a polyurethane layer around its circumference.

[0017] Both the bag outlet and bag inlet of the dust collector hood are equipped with curtains.

[0018] The frame is equipped with a dust collection drawer, which is located at the bottom of the bag conveyor line, and the second air knife assembly is located above the dust collection drawer.

[0019] The above-described structure of this utility model can achieve the following beneficial effects:

[0020] During use, a dust collection device is connected to the dust collection interface. The bags to be unpacked are fed into the dust collection hood through the bag conveyor line. Then, the first and second air knife components clean the bags from the top and bottom, respectively. The compressed air sprayed by the first and second air knife components blows away dust and debris from the bags. The bags are then transported out of the dust collection hood through the bag outlet and enter the unpacking machine for unpacking. While the bags are being cleaned, the dust collection device works to expel the dust-laden gas from the dust collection hood, maintaining a negative pressure environment inside the equipment to prevent dust from overflowing and to promptly remove dust and debris generated during cleaning, preventing secondary contamination of the bags. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0022] Figure 2 This is a structural schematic diagram from another perspective of an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of an embodiment of the present utility model.

[0024] In the diagram: 1. Frame; 2. First air knife assembly; 3. Second air knife assembly; 4. Dust hood; 5. Third air knife assembly; 6. First mounting bracket; 7. Second mounting bracket; 8. Roller; 9. Door curtain; 10. Dust collection drawer. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0026] It should be noted that the terms "comprising" and "having" and any variations thereof in the specification, claims and accompanying drawings of this utility model are intended to cover non-exclusive inclusion. For example, a process, method, apparatus, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such processes, methods, products or devices.

[0027] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0028] refer to Figure 1-3 The bag cleaning equipment shown includes a frame, on which a bag conveyor line, a first air knife assembly 2, a second air knife assembly 3 and a dust hood 4 are provided. The dust hood 4 has a bag inlet on one side and a bag outlet on the other side. The dust hood 4 is provided with a dust removal interface A, which is connected to a dust collection device.

[0029] The bag conveyor line enters the dust collector 4 from the bag inlet and exits the dust collector 4 from the bag outlet.

[0030] The first air knife assembly 2 and the second air knife assembly 3 are both horizontally arranged inside the dust collection hood 4. The first air knife assembly 2 is located above the bag conveyor line, and the second air knife assembly 3 is located below the bag conveyor line.

[0031] Based on the above structure, during use, a dust collection device is connected to the dust removal interface. The bag to be unpacked is fed into the dust collection hood 4 through the bag conveyor line from the bag inlet. Then, the first air knife assembly 2 and the second air knife assembly 3 clean the bag from the top and bottom directions respectively (the first air knife assembly 2 and the second air knife assembly 3 are supplied with air by the air supply device). The compressed air sprayed by the first air knife assembly 2 and the second air knife assembly 3 blows away the dust and debris on the bag (the first air knife assembly 2 and the second air knife assembly 3 can act simultaneously or sequentially). Then, the bag is transported out from the bag outlet of the dust collection hood 4 and enters the unpacking machine for unpacking. While the bag is being cleaned, the dust collection device works to discharge the gas mixed with dust in the dust collection hood 4, maintaining a negative pressure environment inside the equipment, preventing dust from overflowing, and promptly removing the dust and debris generated during cleaning to prevent secondary contamination of the bag.

[0032] like Figure 3 As shown, the first air knife assembly 2 is located on the side near the bag outlet. The air outlet direction of the first air knife assembly 2 is inclined downward towards the bag inlet. A first sensor can be set near the bag outlet to detect the position of the bag. When the bag reaches the vicinity of the bag outlet, the first sensor detects the incoming material, and the first air knife assembly 2 is activated to clean the top of the bag. The first air knife assembly 2 is located near the bag outlet, and the air outlet direction is inclined downward towards the bag inlet to avoid directly blowing dust out of the dust collector hood 4.

[0033] like Figure 3 As shown, in this embodiment, there are two first air knife components 2. The two first air knife components 2 are arranged side by side perpendicular to the bag conveying direction. That is, the air knife blown out by the two first air knife components 2 is in a straight line. A third air knife component 5 is provided on the side of the two first air knife components 2 that is far away from each other. The two third air knife components 5 extend downward from one side of the first air knife component 2 to the side that is far away from each other. In this way, the two third air knife components 5 blow air onto the bag from both sides to clean both sides of the bag.

[0034] Further optimizations include, for example Figure 3 As shown, first mounting brackets 6 are vertically arranged on both sides of the frame 1, and two first air knife assemblies 2 are respectively mounted on the two first mounting brackets 6. In this way, the first air knife assembly 2 is installed on the first mounting brackets 6, and the height of the first air knife assembly 2 on the first mounting brackets 6 can be adjusted according to process requirements to adapt to different needs.

[0035] like Figure 3As shown, the second air knife assembly 3 is located on the side near the bag inlet. The air outlet direction of the second air knife assembly 3 is inclined upward towards the bag outlet. A second sensor can be set near the bag inlet to detect the position of the bag. Thus, when the bag enters the dust collector hood 4, the second sensor detects the incoming material, and the second air knife assembly 3 is activated to clean the bottom of the bag. The second air knife assembly 3 is located on the side near the bag inlet, and the air outlet direction is inclined upward towards the bag outlet to prevent dust from being blown directly out of the dust collector hood 4.

[0036] like Figure 3 As shown, a second mounting bracket 7 is provided on the frame 1, and the second air knife assembly 3 is mounted on the second mounting bracket 7. Thus, by mounting the second air knife assembly 3 on the second mounting bracket 7, the height of the second air knife assembly 3 on the second mounting bracket 7 can be adjusted according to process requirements to adapt to different needs.

[0037] like Figure 3 As shown, the bag conveyor line includes a drive assembly and several rollers 8. The rollers 8 are arranged side by side on the frame 1. The drive assembly is used to drive the rollers 8 to rotate synchronously and in the same direction. The drive assembly may include a motor and chains set at both ends of the rollers 8. Sprockets are set at both ends of the rollers 8. The motor drives the chains to rotate, so that the rollers 8 rotate synchronously and in the same direction, and the bags placed on the rollers 8 move. The rollers 8 are covered with a polyurethane layer to reduce noise.

[0038] Further optimizations include, for example Figure 2 and Figure 3 As shown, curtains 9 are installed at both the bag outlet and bag inlet of the dust collector 4 to minimize the amount of dust inside the dust collector 4 entering the workspace.

[0039] Further optimizations include, for example Figure 2 and Figure 3 As shown, a dust collection drawer 10 is provided on the frame 1. The dust collection drawer 10 is located at the bottom of the bag conveyor line, and the second air knife assembly 3 is located above the dust collection drawer 10. In this way, heavy debris that is not sucked away by the dust collector and materials that may leak out fall into the dust collection drawer 10, and are then cleaned manually periodically.

[0040] In summary, material bags enter the dust collector hood 4 via the bag conveyor line. Upon entry, the second sensor installed on the equipment is triggered, activating the second air knife assembly 3. A thin sheet of airflow is blown through the gap in the roller 8 to clean the lower part of the bag. When the second sensor detects incoming material, the bag leaves the second air knife assembly 3, which stops working. The first air knife assembly 2 and the third air knife assembly 5 are then activated, blowing out thin sheets of airflow to clean the upper part and sides of the bag. While the air knife assemblies are working, the bag conveyor line is constantly in transport mode. When the bag leaves the first air knife assembly 2 and the third air knife assembly 5, and the first sensor does not detect the bag, the first air knife assembly 2 and the third air knife assembly 5 stop working, or stop working after a certain delay (the time is settable).

[0041] During equipment operation, connect to on-site dust collection equipment to maintain a negative pressure environment inside the equipment, prevent dust from overflowing, and promptly remove dust and debris generated during cleaning to prevent secondary contamination of the bags; heavier debris and materials that are not removed by dust collection fall into the dust collection drawer 10, and are then cleaned manually periodically.

[0042] The bag conveyor line of this application is driven by a geared motor, and the roller 8 is coated with polyurethane, which has good chemical stability, low operating noise, and effectively improves the on-site working environment.

[0043] This application utilizes the high airflow compression ratio of the air knife, which blows out a thin sheet of balanced and stable airflow with extremely strong impact force, effectively treating dust on material packaging bags.

[0044] This application features three separate air knife units, with the thin airflow from the air knife units capable of fully covering the top, bottom, and sides of the material bag. The first air knife assembly 1, the second air knife assembly 2, and the third air knife assembly 3 are independently controlled, which can effectively reduce the consumption of compressed gas by the equipment and thus save costs.

[0045] This application prevents large particles and potentially scattered materials that the dust collector cannot suck in. The equipment is equipped with a dust collection drawer 10 to collect debris, preventing debris from falling to the ground and thus keeping the work area clean.

[0046] This application has a small footprint, and the bags do not need to be stationary for cleaning. It can clean bags continuously, greatly reducing the work cycle and improving cleaning efficiency.

[0047] The above are merely preferred embodiments of this application, and the present invention is not limited to the above embodiments. It is understood that other improvements and variations that can be directly derived or conceived by those skilled in the art without departing from the spirit and concept of the present invention should be considered to be included within the protection scope of the present invention.

Claims

1. A bale cleaner for a bale unloader, characterized by: Includes a frame, on which a bag conveying line, a first air knife assembly (2), a second air knife assembly (3) and a dust removal hood (4) are provided. The dust removal hood (4) has a bag inlet on one side and a bag outlet on the other side. The dust removal hood (4) has a dust removal interface, which is connected to a dust collection device. The bag conveyor line enters the dust collector hood (4) from the bag inlet and exits the dust collector hood (4) from the bag outlet. The first air knife assembly (2) and the second air knife assembly (3) are both horizontally arranged inside the dust removal hood (4). The first air knife assembly (2) is arranged above the bag conveyor line, and the second air knife assembly (3) is arranged below the bag conveyor line.

2. The bag cleaning equipment for unpacking machines according to claim 1, characterized in that: The first air knife assembly (2) is located on the side near the bag outlet, and the air outlet direction of the first air knife assembly (2) is inclined downward towards the bag inlet.

3. The bag cleaning equipment for unpacking machines according to claim 2, characterized in that: There are two first air knife components (2). The two first air knife components (2) are arranged side by side along the direction perpendicular to the bag conveying direction. A third air knife component (5) is provided on the side of the two first air knife components (2) that is far away from each other. The two third air knife components (5) extend downward at an angle from one side of the first air knife component (2) to the side that is far away from each other.

4. The bag cleaning equipment for unpacking machines according to claim 3, characterized in that: The frame (1) is vertically provided with first mounting brackets (6) on both sides, and the two first air knife assemblies (2) are respectively mounted on the two first mounting brackets (6).

5. The bag cleaning equipment for unpacking machines according to claim 2, characterized in that: The second air knife assembly (3) is located on the side near the bag inlet, and the air outlet direction of the second air knife assembly (3) is inclined upward towards the bag outlet.

6. The bag cleaning equipment for unpacking machines according to claim 5, characterized in that: The frame (1) is provided with a second mounting bracket (7), and the second air knife assembly (3) is provided on the second mounting bracket (7).

7. The bag cleaning equipment for unpacking machines according to claim 1, characterized in that: The bag conveyor line includes a drive assembly and several rollers (8). The rollers (8) are arranged side by side on the frame (1). The drive assembly is used to drive the rollers (8) to rotate synchronously in the same direction.

8. The bag cleaning equipment for unpacking machines according to claim 7, characterized in that: The roller (8) is covered with a polyurethane layer on its circumferential side.

9. The bag cleaning equipment for unpacking machines according to claim 1, characterized in that: The dust collector hood (4) is equipped with a door curtain (9) at both the bag outlet and the bag inlet.

10. The bag cleaning equipment for unpacking machines according to claim 1, characterized in that: The frame (1) is provided with a dust collection drawer (10), which is located at the bottom of the bag conveyor line, and the second air knife assembly (3) is located above the dust collection drawer (10).

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