Compression method and efficient compression device

Abstract

The invention discloses a compression method and an efficient compression device.The compression method comprises the steps that firstly, after a compression bag loaded with articles and with a closed bag opening is placed in a containing cavity capable of generating negative pressure, the containing cavity is closed; secondly, the containing cavity is vacuumized through a vacuumizing assembly, and air in the compression bag can be exhausted through a one-way exhaust structure on the compression bag; and 3, recovering the normal pressure of the accommodating cavity. By means of the method, a large number of packages can be placed in the compression bag, batch compression of the packages can be achieved, when the containing cavity is vacuumized through the vacuumizing assembly, the interior of the compression bag can be indirectly vacuumized, then the containing cavity is restored to the normal pressure, the compression bag can be rapidly compressed, the compression efficiency can be improved, complex equipment does not need to be used for compressing the packages, and the cost is reduced. The one-way exhaust structure of the compression bag does not need to be accurately butted for air exhaust compression, the operation cost is low, the compression efficiency is high, and the compression bag can be repeatedly used.

Description

Technical Field

[0001] The present invention relates to the technical field related to packaging logistics, and particularly relates to a compression method and an efficient compression device. Background Art

[0002] In the logistics industry, especially during cross-border long-distance transportation, the volume of packages is particularly concerned. On the one hand, there are rigid requirements for their volume, and on the other hand, it affects the cost. With the booming development of cross-border e-commerce, the number of express deliveries has increased, and cost savings have become particularly important and necessary. At present, compared with directly sending without any treatment, overall compression of cross-border packages before shipping can save a large amount of costs. In the prior art, the method of compressing packages generally uses mechanical structures to compress packages, which is easy to damage the packages, has high equipment operation costs, and the compression efficiency needs to be further improved. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides an efficient compression device, which can solve the problems of low compression efficiency and high operation costs.

[0004] A compression method according to an embodiment of the first aspect of the present invention includes: Step 1: After placing a compression bag loaded with items and having a sealed bag mouth in a containment cavity capable of generating negative pressure, seal the containment cavity; Step 2: A vacuum pumping assembly pumps the containment cavity to a vacuum, and the air in the compression bag can be discharged through a one-way exhaust structure on the compression bag; Step 3: Restore the containment cavity to normal pressure.

[0005] The compression method according to an embodiment of the present invention has at least the following beneficial effects: A large number of packages can be placed in the compression bag, enabling batch compression of packages. When the vacuum pumping assembly pumps the containment cavity to a vacuum, it can indirectly pump the compression bag to a vacuum, and then restore the containment cavity to normal pressure. Since the compression bag has a one-way exhaust structure, external air cannot enter the compression bag, and the pressure difference inside and outside the compression bag can compress the compression bag, enabling the compression bag to be quickly compressed, improving the compression efficiency, and realizing batch compression of packages. Through the above method, there is no need to use complex equipment to compress packages, nor is it necessary to accurately connect to the one-way exhaust structure of the compression bag to pump air for compression, with low operation costs and high compression efficiency. The compression bag can also be reused.

[0006] According to some embodiments of the present invention, in Step 1, first place the items in the compression bag and seal the bag mouth, and then place the compression bag in the containment cavity.

[0007] According to some embodiments of the present invention, in Step 1, first place the compression bag in the containment cavity, and then place the items in the compression bag.

[0008] According to some embodiments of the present invention, at least one of the compression bags is loaded into a carrying box, and the carrying box loaded with the compression bags is placed into the accommodating cavity.

[0009] According to some embodiments of the present invention, in the first step, the sealing rib strips of the compression bag are buckled to seal the opening of the compression bag or the opening of the compression bag is sealed by hot pressing.

[0010] According to some embodiments of the present invention, in the first step, the compression bag is driven into the accommodating cavity or the accommodating cavity is driven to wrap the compression bag.

[0011] According to some embodiments of the present invention, in the second step, the air extraction valve connected to the accommodating cavity is opened, the air inlet valve connected to the accommodating cavity is closed, and the vacuum extraction assembly is started. The vacuum extraction assembly evacuates the accommodating cavity through the air extraction valve.

[0012] According to some embodiments of the present invention, in the second step, the negative pressure value of the accommodating cavity is detected by a negative pressure gauge connected to the accommodating cavity. After reaching the predetermined negative pressure value, the vacuum extraction is stopped.

[0013] According to some embodiments of the present invention, in the third step, the air inlet valve connected to the accommodating cavity is opened, the air extraction valve connected to the accommodating cavity is closed, and external air enters the accommodating cavity through the air inlet valve to restore the normal pressure of the accommodating cavity.

[0014] According to some embodiments of the present invention, the predetermined negative pressure value is set to 60 kPa - 90 kPa.

[0015] According to an embodiment of the second aspect of the present invention, an efficient compression device includes: a compression assembly, the compression assembly includes a vacuum box, a connecting member and a vacuum extraction assembly. The vacuum box has an accommodating cavity. The vacuum box can open the accommodating cavity for the compression bag to be put in and taken out. The vacuum extraction assembly is connected to the accommodating cavity, and the vacuum extraction assembly can evacuate the accommodating cavity. The connecting member is arranged in the vacuum box, and the connecting member can allow air to enter the accommodating cavity.

[0016] The efficient compression device according to the embodiment of the second aspect of the present invention has at least the following beneficial effects: A large number of packing objects can be put into the compression bag at one time, and batch compression of the package can be realized. When the vacuum extraction assembly evacuates the vacuum box, it can indirectly evacuate the inside of the compression bag without docking the vacuum bag. The structure is simple and the operation is convenient. The connecting member can control the communication between the accommodating cavity and the external air, and thus can use the atmospheric pressure difference to compress the compression bag. The structure is ingenious and can compress quickly, with high compression efficiency.

[0017] According to some embodiments of the present invention, the vacuum box includes a box body and a door assembly, the box body has at least one opening connected to the accommodating cavity, the door assembly is connected to the box body, and the door assembly can open and close the opening.

[0018] According to some embodiments of the present invention, the vacuum box further comprises a driving device, which is drivingly connected to the door assembly, and the driving device can drive the door assembly to open and close the opening.

[0019] According to some embodiments of the present invention, the vacuum pump assembly includes a vacuum pump, a pipeline assembly and an exhaust valve. The vacuum pump is connected to the vacuum box via the pipeline assembly. The exhaust valve is arranged on the pipeline assembly. The exhaust valve can control the connection and disconnection between the vacuum pump and the accommodating chamber.

[0020] According to some embodiments of the present invention, the connecting piece is configured as an air intake valve, and the air intake valve is disposed on the pipeline assembly, and the air intake valve can control the connection and disconnection of external air and the accommodating chamber.

[0021] According to some embodiments of the present invention, a workbench is further included, which extends in the front-to-back direction. The box is arranged on the workbench, and the box is penetrated in the front-to-back direction to form a front opening and a rear opening. The door body assembly includes a first door body and a second door body. The driving device can drive the first door body to open and close the front opening, and drive the second door body to open and close the rear opening. The workbench can be used to place the compression bag.

[0022] According to some embodiments of the present invention, it further includes a first driving mechanism, which is arranged on one side of the workbench. The first driving mechanism can drive the compression bag to enter the accommodating cavity from the front opening, and can drive the compression bag to move out of the accommodating cavity from the rear opening.

[0023] According to some embodiments of the present invention, it further includes a first conveyor belt, a second driving mechanism and a third driving mechanism. The first conveyor belt extends in the front-to-back direction and is located at one side of the workbench. The first conveyor belt can convey the compression bag to move in the front-to-back direction. The second driving mechanism is arranged at one side of the first conveyor belt. The second driving mechanism can drive the compression bag located at the first conveyor belt to enter the front of the workbench. The third driving mechanism is arranged at one side of the workbench, and the third driving mechanism can drive the compression bag output from the vacuum box to enter the first conveyor belt.

[0024] According to some embodiments of the present invention, it further includes a second conveyor belt and a lifting mechanism. The lifting mechanism is arranged on the second conveyor belt, and the vacuum box is in transmission connection with the lifting mechanism. The bottom of the vacuum box has a third opening communicating with the accommodating cavity. The lifting mechanism can drive the vacuum box to move up and down to a first position and a second position. At the first position, the vacuum box is located above the second conveyor belt, and the second conveyor belt can convey the compression bag to the lower part of the vacuum box. At the second position, the bottom of the vacuum box abuts against the second conveyor belt so that the compression bag is located in the accommodating cavity.

[0025] According to some embodiments of the present invention, it further includes a packaging conveyor line. A plurality of packing stations are arranged on both sides of the packaging conveyor line. The packing stations are used for packing the compression bags. The packed compression bags can be placed on the packaging conveyor line for conveying. The compression assembly is arranged at the end of the packaging conveyor line, and the compression assembly can compress the compression bags packed by each packing station.

[0026] According to some embodiments of the present invention, it further includes a bearing box for loading compression bags. The bearing box has a second opening with an upward opening, and the one-way exhaust structure is located above the second opening.

[0027] According to some embodiments of the present invention, the one-way exhaust structure is set as an exhaust valve, and the cross-sectional area of the exhaust port of the exhaust valve is set to be 4.9 cm 2 -15.9 cm 2 。

[0028] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

[0030] Figure 1 Schematic diagram of some embodiments of an efficient compression device;

[0031] Figure 2 For Figure 1 Top view;

[0032] Figure 3 Schematic diagram of some embodiments of the present invention;

[0033] Figure 4 Schematic diagram of some embodiments of the compression assembly;

[0034] Figure 5 Schematic diagram of some embodiments of the compression assembly;

[0035] Figure 6 Schematic diagrams of some embodiments of a compression assembly;

[0036] Figure 7 Schematic diagrams of some embodiments of a compression assembly;

[0037] Figure 8 Schematic diagram of a packaging conveyor line.

[0038] Reference numerals:

[0039] Compression bag 100, first opening 110, sealing structure 111, one-way exhaust structure 120;

[0040] Compression assembly 200, vacuum chamber 210, accommodation cavity 211, box body 212, front opening 2121, rear opening 2122, door body assembly 213, first door body 2131, second door body 2132, drive device 214, third opening 215, vacuum pumping assembly 220, vacuum pump 221, pipeline assembly 222, air extraction valve 223, air inlet valve 224, negative pressure gauge 225, connecting member 230;

[0041] Carrying box 300, second opening 310;

[0042] Workbench 410, first driving mechanism 420;

[0043] First conveyor belt 510, second driving mechanism 520, third driving mechanism 530;

[0044] Second conveyor belt 610, lifting mechanism 620;

[0045] Packaging conveyor line 710, packing station 720. Detailed implementation manners

[0046] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0047] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0048] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] A compression method according to an embodiment of the first aspect of the present invention. Step 1: After placing a compression bag 100 loaded with items and having its bag mouth sealed in a receiving cavity 211 capable of generating negative pressure, seal the receiving cavity 211. Step 2: A vacuum pumping assembly 220 pumps the receiving cavity 211 to a vacuum, and the air inside the compression bag 100 can be discharged through a one-way exhaust structure 120 on the compression bag 100. Step 3: Restore the receiving cavity 211 to normal pressure. The compression bag 100 can hold a large number of packages, enabling batch compression of the packages. When the vacuum pumping assembly 220 pumps the receiving cavity 211 to a vacuum, it can indirectly pump the inside of the compression bag 100 to a vacuum, and then restore the receiving cavity 211 to normal pressure. Since the compression bag 100 has a one-way exhaust structure 120, external air cannot enter the compression bag 100, and the pressure difference inside and outside the compression bag 100 can compress the compression bag 100, enabling the compression bag 100 to be quickly compressed, improving the compression efficiency, and achieving batch compression of packages. Through the above method, there is no need to use complex equipment to compress the packages, nor is it necessary to accurately connect to the one-way exhaust structure 120 of the compression bag 100 for air extraction and compression. The operating cost is low, and the compression efficiency is high. The compression bag 100 can also be reused.

[0050] Specifically, in step one, it is necessary to first prepare the compression bag 100. The package to be packed can be first placed into the compression bag 100, and then the compression bag 100 is sealed to form a first cavity. The compression bag 100 is provided with a one-way exhaust structure 120 communicating with the first cavity. In step two, the compression assembly 200 can be prepared. The compression assembly 200 includes a vacuum chamber 210 and a vacuum pumping assembly 220 connected to each other. The vacuum chamber 210 has an accommodation cavity 211. The compression bag 100 can be placed into the accommodation cavity 211 of the vacuum chamber 210, and the vacuum pumping assembly 220 can be operated to pump the air out of the accommodation cavity 211. In step three, the accommodation cavity 211 can be communicated with the outside to allow air to enter the accommodation cavity 211 and compress the compression bag 100. Through the above method, there is no need to use complex equipment to compress the package, nor is it necessary to accurately connect to the one-way exhaust structure 120 of the compression bag 100 to pump air for compression. The operation cost is low and the compression efficiency is high. The compression bag 100 can also be reused.

[0051] In some embodiments of the present invention, in step one, the compression bag 100 is first placed into the accommodation cavity 211, and then the items are placed into the compression bag 100. Alternatively, the items can also be first placed into the compression bag 100 to seal the bag opening, and then the compression bag 100 is placed into the accommodation cavity 211.

[0052] In some embodiments of the present invention, in step one, the compression bag 100 is driven to be placed into the vacuum chamber 210 or the vacuum chamber 210 is driven to wrap the compression bag 100 so that the compression bag 100 is located in the accommodation cavity 211.

[0053] In some embodiments of the present invention, in step one, a sealing rib can be provided at the opening of the compression bag 100, and the sealing rib of the compression bag 100 is buckled to seal the compression bag 100, so that people can repeatedly open and seal the compression bag 100, and the compression bag 100 can be reused, reducing the use cost.

[0054] It can be imagined that the opening of the sealed bag can also be directly sealed by hot pressing.

[0055] In some embodiments of the present invention, in step one, the door body assembly 213 of the vacuum chamber 210 can be opened, the compression bag 100 is placed into the vacuum chamber 210, and then the door body assembly 213 is closed. The door body assembly 213 can open and seal the vacuum chamber 210, which is convenient for pumping air and also convenient for taking the compression bag 100.

[0056] In some embodiments of the present invention, in step two, the air extraction valve 223 on the vacuum chamber 210 is opened, and the air inlet valve 224 on the vacuum chamber 210 is closed. The vacuum extraction assembly 220 is started, and the vacuum extraction assembly 220 evacuates the inside of the vacuum chamber 210 through the air extraction valve 223. Specifically, the vacuum chamber 210 may be provided with an air extraction valve 223 and an air inlet valve 224 that are internally connected. The air extraction valve 223 is connected to the vacuum extraction assembly 220, and the air inlet valve 224 is communicated with the external air. The processes of vacuum extraction and compression can be controlled by controlling the opening and closing of the air extraction valve 223 and the air inlet valve 224, which is convenient for control and the operation is more convenient.

[0057] In some embodiments of the present invention, in step two, the vacuum chamber 210 is provided with a negative pressure gauge 225. The negative pressure gauge 225 can detect the negative pressure value inside the vacuum chamber 210. By observing the negative pressure value of the negative pressure gauge 225, the vacuum extraction of the vacuum chamber 210 is controlled to stop. This is convenient for detecting the state of vacuum extraction. When the negative pressure value reaches the required value, the vacuum extraction assembly 220 can be controlled to stop vacuum extraction to start the subsequent process.

[0058] In some embodiments of the present invention, in step three, the air inlet valve 224 on the vacuum chamber 210 is opened, and the air extraction valve 223 on the vacuum chamber 210 is closed, so that the vacuum chamber 210 is communicated with the outside, and air enters the vacuum chamber 210 to compress the compression bag 100. The air entering the vacuum chamber 210 to compress the compression bag 100 is controlled by the air inlet valve 224. There is no need to open the vacuum chamber 210, the operation is convenient, and the structure is simple and easy to control.

[0059] It can be understood that the vacuum extraction assembly 220 can be started all the time, which can simplify the operation.

[0060] In some embodiments of the present invention, at least one of the compression bags 100 is loaded through the carrying box 300, and the carrying box 300 loaded with the compression bag 100 is placed into the accommodating cavity 211. The carrying box 300 can place a plurality of compression bags 100, which enables the compression bags 100 to be compressed in batches in the accommodating cavity 211, and the carrying box 300 is convenient for packing and transferring.

[0061] In some embodiments of the present invention, the one-way exhaust structure 120 is placed above the opening of the carrying box 300. The opening of the carrying box 300 faces upward, and the one-way exhaust structure 120 is placed at a position higher than the carrying box 300, which is convenient for vacuum extraction.

[0062] Refer to Figures 1 to 7, an efficient compression device according to an embodiment of the second aspect of the present invention includes a compression device. The compression bag 100 has a first cavity and a first opening 110. The first opening 110 is provided with a sealing structure 111, and the compression bag 100 is provided with a one-way exhaust structure 120 communicating with the first cavity. The compression device includes a vacuum box 210, a connecting member 230, and a vacuum pumping assembly 220. The vacuum box 210 has a receiving cavity 211. The vacuum box 210 includes a box body 212 and a door assembly 213. The box body 212 has at least one opening communicating with the receiving cavity 211. The door assembly 213 is connected to the box body 212, and the door assembly 213 can open and close the opening to open the receiving cavity 211 for the compression bag 100 to be put in and taken out. The vacuum pumping assembly 220 is connected to the receiving cavity 211, and the vacuum pumping assembly 220 can pump the receiving cavity 211 to a vacuum state. The connecting member 230 is provided in the vacuum box 210, and the connecting member 230 can allow air to enter the receiving cavity 211. Specifically, the compression bag 100 can be used to put in items such as packages through the first opening 110. The sealing structure 111 can be set as a sealing rib, and the compression bag 100 can be set larger to facilitate putting in a large number of packages and improve the compression efficiency. After the sealing structure 111 is sealed, the door assembly 213 can be opened to open the receiving cavity 211, and then the compression bag 100 can be put into the receiving cavity 211, and then the door assembly 213 is closed. At this time, the vacuum pumping assembly 220 can be started to pump air from the receiving cavity 211. Since the compression bag 100 is provided with a one-way exhaust structure 120 and the exhaust direction is set to exhaust from the first cavity to the outside, both the first cavity and the receiving cavity 211 can be pumped to a substantially vacuum state. It can be understood that a negative pressure gauge 225 can be provided on the vacuum box 210 or the vacuum pumping assembly 220 to detect the negative pressure state of the vacuum pumping to control the vacuum pumping component to stop pumping. At this time, the connecting member 230 can be used to connect the receiving cavity 211 with the outside. The specific connecting structure of the connecting member 230 is not limited herein. After the receiving cavity 211 communicates with the outside air, since the compression bag 100 has a one-way exhaust structure 120, the outside air will not enter the first cavity from the one-way exhaust structure 120, but will squeeze the compression bag 100, so that the compression bag 100 can be compressed by the atmospheric pressure, and the packages can be indirectly compressed by the way of pumping air. There is no need to set a complex compression mechanism, and the compression bag 100 can be adjusted in size according to requirements. Moreover, multiple compression bags 100 can also be put into the vacuum box 210 for processing, with good flexibility. It should be noted that after the packages are taken out, the compression bag 100 can be reused, which can save the use cost.

[0063] Referring to Figures 1 to 7In some embodiments of the present invention, the vacuum box 210 further includes a driving device 214, which is in transmission connection with the door assembly 213, and can drive the door assembly 213 to open and close. Specifically, the driving device 214 can be configured as a cylinder, an electric telescopic rod, and other components, the door assembly 213 can be pivotally connected to the box body 212, and the driving device 214 can drive the door assembly 213 to rotate and open and close the opening, and the box body 212 can be automatically opened and closed by using the driving device 214, which can improve the operation efficiency.

[0064] It is understandable that the door assembly 213 can be flipped left and right to open and close the opening, or can be flipped up and down to open and close the opening, or can be set as a sliding door structure, which can slide up and down or slide left and right to open and close the opening.

[0065] Reference Figures 1 to 7 In some embodiments of the present invention, the vacuum pumping component 220 includes a vacuum pump 221, a pipeline component 222, an exhaust valve 223 and an air intake valve 224. The vacuum pump 221 is connected to the vacuum box 210 through the pipeline component 222. The exhaust valve 223 and the air intake valve 224 are both arranged on the pipeline component 222. The exhaust valve 223 can control the connection and disconnection between the vacuum pump 221 and the accommodating chamber 211, and the air intake valve 224 can control the connection and disconnection between the accommodating chamber 211 and the outside. Specifically, the pipeline assembly 222 can be provided with a connecting pipe and a tee, one end of the connecting pipe is connected to the vacuum pump 221, and the other end is connected to an opening of the tee, and the other two openings of the tee are respectively connected to the accommodating chamber 211 and the outside, and the air extraction valve 223 can be arranged between the connecting pipe and the tee, and the air intake valve 224 can be arranged at the opening of the tee connected to the outside. During actual operation, after the compression bag 100 is placed, the air intake valve 224 is closed and the air extraction valve 223 is opened, so that the vacuum pump 221 evacuates the accommodating chamber 211. After evacuation, the vacuum pump 221 is stopped, and then the air extraction valve 223 is closed, and the air intake valve 224 is opened to allow external air to enter the accommodating chamber 211 to compress the compression bag 100. Therefore, the operation of the vacuum extraction and compression steps can be controlled by controlling the valve, and the structure is simple, easy to control, and the compression efficiency is high.

[0066] It is understandable that the air intake valve 224 may also be directly disposed on the vacuum box 210 and communicate with the accommodating chamber 211 , and the air intake valve 224 may directly control the communication between the accommodating chamber 211 and the external air.

[0067] Reference Figures 1 to 2, in some embodiments of the present invention, it further includes a workbench 410. The workbench 410 extends in the front-rear direction. The box body 212 is arranged on the workbench 410, and the box body 212 is formed with a front opening 2121 and a rear opening 2122 in the front-rear direction. The door assembly 213 includes a first door body 2131 and a second door body 2132. The driving device 214 can drive the first door body 2131 to open and close the front opening 2121, and drive the second door body 2132 to open and close the rear opening 2122. The workbench 410 can be used for placing the carrier box 300. Specifically, the carrier box 300 loaded with the compression bag 100 can slide on the workbench 410. During actual operation, the driving device 214 can be used to drive the first door body 2131 to open the front opening 2121, and the operator can push the carrier box 300 loaded with the compression bag 100 into the box body 212 from the front to the back through the front opening 2121 for compression. After compression is completed, the second door body 2132 can be driven to open the rear opening 2122, and the carrier box 300 can be pulled out through the rear opening 2122, which is convenient for operation.

[0068] It can be conceived that the driving device 214 can also drive the first door body 2131 and the second door body 2132 to open and close simultaneously, so that after compression is completed, the operator can push the carrier box 300 out of the rear opening 2122 from the front opening 2121, which is convenient for operation.

[0069] It can be understood that both the first door body 2131 and the second door body 2132 can be rotatably connected to the upper part of the box body 212, and the driving device 214 can drive the first door body 2131 and the second door body 2132 to turn up and down, so as not to affect the entry and exit of the carrier box 300 into and out of the box body 212.

[0070] Refer to Figures 1 to 2 , in some embodiments of the present invention, it further includes a first driving mechanism 420. The first driving mechanism 420 is arranged on one side of the workbench 410. The first driving mechanism 420 can drive the carrier box 300 to enter the accommodation cavity 211 from the front opening 2121, and can drive the carrier box 300 to move out of the accommodation cavity 211 from the rear opening 2122. Specifically, the first driving mechanism 420 can be set as a push rod mechanism, and can push the carrier box 300 in the front-rear direction. Before compression, the carrier box 300 can be pushed into the accommodation cavity 211 from the front opening 2121. After compression is completed, the push rod mechanism can further push the carrier box 300 from the front to the back without additionally setting a discharging mechanism. Therefore, the first driving mechanism 420 can enable the carrier box 300 to enter the vacuum box 210 and leave the vacuum box 210 on the premise of simplifying the structure.

[0071] Refer to Figures 1 to 2, in some embodiments of the present invention, it further includes a first conveyor belt 510, a second driving mechanism 520 and a third driving mechanism 530. The first conveyor belt 510 extends in the front-rear direction and is located on one side of the workbench 410. The first conveyor belt 510 can convey the carrier box 300 to move in the front-rear direction. The second driving mechanism 520 is arranged on one side of the first conveyor belt 510. The second driving mechanism 520 can drive the carrier box 300 located on the first conveyor belt 510 into the front part of the workbench 410. The third driving mechanism 530 is arranged on one side of the workbench 410, and the third driving mechanism 530 can drive the carrier box 300 output from the vacuum box 210 into the first conveyor belt 510. Specifically, the first conveyor belt 510 is arranged close to one side of the workbench 410. The second driving mechanism 520 can be arranged on the side of the first conveyor belt 510 away from the workbench 410 and can be close to the front part. The loaded carrier box 300 can be placed on the first conveyor belt 510. The first conveyor belt 510 conveys the carrier box 300 from front to back. When it is conveyed to the second driving mechanism 520, the second driving mechanism 520 can push the carrier box 300 into the workbench 410. At this time, the carrier box 300 is in front of the vacuum box 210, and the door assembly 213 is opened. Then, the first driving mechanism 420 is used to drive the carrier box 300 into the vacuum box 210 for compression. After compression, the door assembly 213 is opened, and the first driving mechanism 420 drives the carrier box 300 to move backward away from the vacuum box 210. The third driving mechanism 530 can be arranged on the side of the workbench 410 away from the first conveyor belt 510. The third driving mechanism 530 can push the compressed carrier box 300 out of the workbench 410 and into the first conveyor belt 510 to continue to be conveyed backward for subsequent process treatment. It can be understood that both the second driving mechanism 520 and the third driving mechanism 530 can be set as push rod mechanisms. Through the cooperation of the above structures, the automation degree of compression can be improved, and the compression efficiency can be improved.

[0072] Refer to Figure 3, in some embodiments of the present invention, it further includes a second conveyor belt 610 and a lifting mechanism 620. The lifting mechanism 620 is disposed on the second conveyor belt 610, and the vacuum chamber 210 is disposed on the lifting mechanism 620. The bottom of the vacuum chamber 210 has a third opening 215 communicating with the accommodating cavity 211. The lifting mechanism 620 can drive the vacuum chamber 210 to move up and down to a first position and a second position. In the first position, the vacuum chamber 210 is located above the second conveyor belt 610, and the second conveyor belt 610 can convey the compression bag 100 to the lower part of the vacuum chamber 210. In the second position, the bottom of the vacuum chamber 210 abuts against the second conveyor belt 610, so that the compression bag 100 is located in the accommodating cavity 211. Specifically, it can also be set that the second conveyor belt 610 conveys the carrier box 300 from front to back, and the lifting mechanism 620 can be disposed in the middle of the second conveyor belt 610. The specific structure of the lifting mechanism 620 is not limited here. The lifting mechanism 620 can drive the vacuum chamber 210 to move up and down. It can be imagined that the vacuum pumping assembly 220 can be lifted together with the vacuum chamber 210, or the vacuum pumping assembly 220 can be connected to the vacuum chamber 210 through a hose. The bottom of the vacuum chamber 210 can be provided with a third opening 215. During actual operation, the lifting mechanism 620 drives the vacuum chamber 210 to rise. When the second conveyor belt 610 conveys the compression bag 100 or the carrier box 300 loaded with the compression bag 100 to the lower part of the vacuum chamber 210, the lifting mechanism 620 drives the vacuum chamber 210 to descend, and uses the third opening 215 to cover the compression bag 100 or the carrier box 300 loaded with the compression bag 100. At this time, the vacuum chamber 210 and the second conveyor belt 610 form a sealed accommodating cavity 211, and subsequent vacuum pumping and compression processes can be carried out. After compression, the lifting mechanism 620 drives the vacuum chamber 210 to rise, and the second conveyor belt 610 can convey the compressed compression bag 100 backward, without setting additional transfer components, and the operation efficiency is high.

[0073] Referring to Figures 1 to 3 , in some embodiments of the present invention, it further includes a carrier box 300 having a second opening 310. The compression bag 100 is placed in the carrier box 300, and the accommodating cavity 211 can accommodate the carrier box 300 to be put in and taken out. Specifically, the carrier box 300 can accommodate the compression bag 100, can protect the compression bag 100, so that the compression bag 100 is not easily damaged during the transfer process, and the carrier box 300 can also be put into the accommodating cavity 211 of the vacuum chamber 210 together with the compression bag 100 for air extraction. The second opening 310 can communicate the accommodating cavity 211 with the one-way exhaust structure 120 to ensure that the compression bag 100 can exhaust normally.

[0074] Referring to Figures 1 to 3, in some embodiments of the present invention, the second opening 310 is arranged upward, and the one-way exhaust structure 120 is located above the first opening 110. Specifically, the carrier box 300 can be arranged with the second opening 310 upward, and the one-way exhaust structure 120 can be arranged on the upper part of the compression bag 100. After the compression bag 100 is placed in the carrier box 300, the upper part of the compression bag 100 can protrude from the carrier box 300, and the one-way exhaust structure 120 also protrudes from the carrier box 300 and is not blocked by the carrier box 300, which is convenient for the compression bag 100 to exhaust, and the exhaust efficiency is high.

[0075] It should be noted that a specific compression method can also be to open the first opening 110 of the compression bag 100, put the packing object into the first cavity from the first opening 110, and then seal the first opening 110 through the sealing structure 111. The sealed compression bag 100 can be placed in the carrier box 300. The carrier box 300 can be placed on the first conveyor belt 510, and the first conveyor belt 510 transports it to the workbench 410. The second driving mechanism 520 drives the carrier box 300 into the workbench 410, the door assembly 213 opens, the first driving mechanism 420 drives the carrier box 300 into the box body 212, the door assembly 213 closes, the vacuum pumping component evacuates the accommodation cavity 211, and then the intake valve 224 is opened. After the accommodation cavity 211 intakes air, it can compress the compression bag 100 to exhaust. After the compression bag 100 is compressed, the door assembly 213 is opened, the first driving mechanism 420 drives the carrier box 300 out of the vacuum box 210, and the third driving mechanism 530 drives the carrier box 300 to re-enter the first conveyor belt 510. The first conveyor belt 510 transports the carrier box 300 to the subsequent process.

[0076] It can be imagined that the carrier box 300 loaded with the compression bag 100 can also be placed on the second conveyor belt 610. The lifting mechanism 620 drives the vacuum box 210 to rise. The second conveyor belt 610 transports the carrier box 300 to the lower part of the vacuum box 210. The lifting mechanism 620 drives the vacuum box 210 to descend and confines the carrier box 300 in the accommodation cavity 211. The vacuum pumping component evacuates the air. After the compression bag 100 is compressed, the lifting mechanism 620 drives the vacuum box 210 to rise, and the second conveyor belt 610 continues to transport to process the next carrier box 300 and transports the compressed carrier box 300 backward.

[0077] Refer to Figure 8In some embodiments of the present invention, a packaging conveyor line 710 is further included. A plurality of packing stations 720 are provided on both sides of the packaging conveyor line 710. The packing stations 720 are used to pack the compression bags 100. The packed compression bags 100 can be placed on the packaging conveyor line 710 for conveyance. A compression assembly 200 is provided at the end of the packaging conveyor line 710. The compression assembly 200 can compress the compression bags 100 packed at each packing station 720. In the prior art, a general packaging line is divided into many stations. Each station is individually boxed and individually compressed and sealed. In this case, there will be many operations at each station, and the efficiency is not high. In this embodiment, the compression assembly 200 is placed at the end of the packaging conveyor line 710. Each packing station 720 places the compression bags 100 on the packaging conveyor line 710 and conveys them uniformly to the compression assembly 200 for compression, which can reduce the operations at each packing station 720 and is beneficial to improving the efficiency.

[0078] Serial number Exhaust valve diameter (cm) <![CDATA[Cross-sectional area of the exhaust port (cm 2 )]]> Exhaust time (s) 1 1.5 1.8 216 2 2.5 4.9 83 3 3.5 9.6 32 4 4.5 15.9 25 5 5.5 23.7 19 6 6.5 33.2 16 7 7.5 44.2 15

[0079] Table 1 Exhaust time test data of exhaust valves of different sizes

[0080] Referring to Table 1, it should be noted that the one-way exhaust structure can be set as an exhaust valve, and the cross-sectional area of the exhaust port of the exhaust valve can be set to 4.9 cm 2 -15.9 cm 2 , when the cross-sectional area of the exhaust port of the exhaust valve is set to 4.9 cm 2 , the diameter of the exhaust valve is 2.5 cm, and the exhaust time is 83 seconds. The exhaust time basically meets the requirements, and the size of the exhaust valve is small. When the cross-sectional area of the exhaust port of the exhaust valve is set to 15.9 cm 2 , the diameter of the exhaust valve is 4.5 cm, and the exhaust time is 25 seconds. The size of the exhaust valve is not too large, and the exhaust speed is relatively fast.

[0081] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0082] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A compression method, characterized in that: include: Step 1: After placing a compression bag (100) loaded with articles and having a sealed bag opening in a accommodating chamber (211) capable of generating negative pressure, the accommodating chamber (211) is sealed; Step 2: The vacuuming component (220) vacuums the accommodating chamber (211), and the air in the compression bag (100) can be discharged through the one-way exhaust structure (120) on the compression bag (100); Step three: restore the accommodating chamber (211) to normal pressure.

2. A compression method according to claim 1, characterized in that: In step one, the article is first placed in the compression bag (100) and the bag opening is sealed, and then the compression bag (100) is placed in the accommodating cavity (211).

3. A compression method according to claim 1, characterized in that: In step one, the compression bag (100) is first placed in the accommodating cavity (211), and then the articles are placed in the compression bag (100).

4. A compression method according to claim 1, characterized in that: At least one compression bag (100) is loaded through a carrying box (300), and the carrying box (300) loaded with the compression bag (100) is placed in the accommodating cavity (211).

5. A compression method according to claim 1, characterized in that: In the step one, the sealing ribs of the compression bag (100) are fastened to make the opening of the compression bag (100) airtight, or the opening of the compression bag (100) is sealed by heat pressing.

6. A compression method according to claim 1, characterized in that: In step one, the compression bag (100) is driven to be placed into the accommodating cavity (211) or the accommodating cavity (211) is driven to wrap around the compression bag (100).

7. A compression method according to claim 1, characterized in that: In the step 2, the air extraction valve (223) connected to the accommodating chamber (211) is opened, and the air intake valve (224) connected to the accommodating chamber (211) is closed, and the vacuum extraction component (220) is started, and the vacuum extraction component (220) evacuates the accommodating chamber (211) through the air extraction valve (223).

8. A compression method according to claim 1, characterized in that: In the second step, the negative pressure value of the accommodating chamber (211) is detected by a negative pressure gauge (225) connected to the accommodating chamber (211), and vacuuming is stopped when the negative pressure value reaches a predetermined value.

9. A compression method according to claim 1, characterized in that: In the step three, the air intake valve (224) connected to the accommodating chamber (211) is opened, and the air extraction valve (223) connected to the accommodating chamber (211) is closed, and external air enters the accommodating chamber (211) through the air intake valve (224) to restore the accommodating chamber (211) to normal pressure.

10. A compression method according to claim 8, characterized in that: The predetermined negative pressure value is set to 60 kPa-90 kPa.

11. A high-efficiency compression device using a compression method according to any one of claims 1 to 10, characterized in that: include: A compression assembly (200), the compression assembly (200) comprising a vacuum box (210), a connecting piece (230) and a vacuum pumping assembly (220), the vacuum box (210) having a receiving chamber (211), the vacuum box (210) being capable of opening the receiving chamber (211) so as to allow the compression bag (100) to be placed in and taken out, the vacuum pumping assembly (220) being connected to the receiving chamber (211), the vacuum pumping assembly (220) being capable of vacuuming the receiving chamber (211), the connecting piece (230) being disposed on the vacuum box (210), the connecting piece (230) being capable of allowing air to enter the receiving chamber (211).

12. The high-efficiency compression device according to claim 11, characterized in that: The vacuum box (210) comprises a box body (212) and a door body assembly (213); the box body (212) has at least one opening communicating with the accommodating cavity (211); the door body assembly (213) is connected to the box body (212); and the door body assembly (213) can open and close the opening.

13. The high-efficiency compression device according to claim 12, characterized in that: The vacuum box (210) further comprises a driving device (214), wherein the driving device (214) is in transmission connection with the door body assembly (213), and the driving device (214) is capable of driving the door body assembly (213) to open and close the opening.

14. The high-efficiency compression device according to claim 11, characterized in that: The vacuum pumping component (220) comprises a vacuum pump (221), a pipeline component (222) and an air extraction valve (223); the vacuum pump (221) is connected to the vacuum box (210) via the pipeline component (222); the air extraction valve (223) is arranged on the pipeline component (222); and the air extraction valve (223) can control the connection and disconnection between the vacuum pump (221) and the accommodating chamber (211).

15. The high-efficiency compression device according to claim 14, characterized in that: The connecting piece (230) is configured as an air intake valve (224), and the air intake valve (224) is disposed on the pipeline assembly (222). The air intake valve (224) can control the connection and disconnection of external air and the accommodating chamber (211).

16. The high-efficiency compression device according to claim 13, characterized in that: The invention also includes a workbench (410), wherein the workbench (410) extends in the front-to-back direction, the box body (212) is arranged on the workbench (410), and the box body (212) penetrates in the front-to-back direction to form a front opening (2121) and a rear opening (2122), the door body assembly (213) includes a first door body (2131) and a second door body (2132), the driving device (214) can drive the first door body (2131) to open and close the front opening (2121), and drive the second door body (2132) to open and close the rear opening (2122), and the workbench (410) can be used to place the compression bag (100).

17. The high-efficiency compression device according to claim 16, characterized in that: The first driving mechanism (420) is arranged on one side of the workbench (410), and the first driving mechanism (420) can drive the compression bag (100) to enter the accommodating chamber (211) from the front opening (2121), and can drive the compression bag (100) to move out of the accommodating chamber (211) from the rear opening (2122).

18. The high-efficiency compression device according to claim 17, characterized in that: The invention also includes a first conveyor belt (510), a second driving mechanism (520) and a third driving mechanism (530), wherein the first conveyor belt (510) extends in the front-to-back direction and is located on one side of the workbench (410), and the first conveyor belt (510) is capable of conveying the compression bag (100) to move in the front-to-back direction, the second driving mechanism (520) is arranged on one side of the first conveyor belt (510), and the second driving mechanism (520) is capable of driving the compression bag (100) located on the first conveyor belt (510) to enter the front part of the workbench (410), and the third driving mechanism (530) is arranged on one side of the workbench (410), and the third driving mechanism (530) is capable of driving the compression bag (100) output from the vacuum box (210) to enter the first conveyor belt (510).

19. The high-efficiency compression device according to claim 11, characterized in that: The invention also comprises a second conveyor belt (610) and a lifting mechanism (620), wherein the lifting mechanism (620) is arranged on the second conveyor belt (610), the vacuum box (210) is connected to the lifting mechanism (620) in a transmission manner, the bottom of the vacuum box (210) has a third opening (215) connected to the accommodating chamber (211), and the lifting mechanism (620) can drive the vacuum box (210) to move up and down to a first position and a second position, wherein in the first position, the vacuum box (210) is located above the second conveyor belt (610), and the second conveyor belt (610) can convey the compression bag (100) to the bottom of the vacuum box (210), and in the second position, the bottom of the vacuum box (210) abuts against the second conveyor belt (610) so that the compression bag (100) is located in the accommodating chamber (211).

20. The high-efficiency compression device according to claim 11, characterized in that: It also includes a packaging conveyor line (710), and a plurality of packaging stations (720) are arranged on both sides of the packaging conveyor line (710). The packaging stations (720) are used to pack the compression bags (100). The packed compression bags (100) can be placed on the packaging conveyor line (710) for transportation. The compression assembly (200) is arranged at the end of the packaging conveyor line (710), and the compression assembly (200) can compress the compression bags (100) packed by each of the packaging stations (720).

21. The high-efficiency compression device according to claim 11, characterized in that: It also includes a carrying box (300) for loading the compression bag, the carrying box (300) having a second opening (310) opening upward, and the one-way exhaust structure (120) is located above the second opening (310).

22. The high-efficiency compression device according to claim 11, characterized in that: The one-way exhaust structure (120) is set as an exhaust valve, and the exhaust port cross-sectional area of ​​the exhaust valve is set to 4.9 cm 2 -15.9cm 2 .

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