Box opening device and control method thereof

Abstract

The invention discloses a box opening device and a control method thereof. The box opening device comprises a suction cup set, a positive pressure pipeline, a negative pressure pipeline, a positive and negative pressure switch valve set, a vacuum breaking valve set and a control unit. The suction cup set is communicated with the positive pressure pipeline and the negative pressure pipeline. The positive and negative pressure switch valve group is arranged on a connecting gas path of the suction cup group and the positive pressure pipeline and is arranged on a connecting gas path of the suction cup group and the negative pressure pipeline; the vacuum breaking valve group is arranged on the positive pressure pipeline; and the control unit is respectively in communication connection with the positive and negative pressure switch valve group and the vacuum breaking valve group. According to the technical scheme, the suction cup set, the positive pressure pipeline, the negative pressure pipeline, the positive and negative pressure switch valve set, the vacuum breaking valve set and the control unit are arranged, and through a cooperative work mechanism, it can be ensured that in the box opening process, the suction cup set can accurately and stably suck a box body to be opened, and the box opening forming action is completed; meanwhile, due to the design of the valve group on the pipeline, the air pressure stability of the box opening device is improved, and the box opening efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging equipment, and in particular to a box opening device and a control method thereof. Background Art

[0002] As a side-type carton opening machine, the YP13 carton filling and sealing machine plays an important role in the cigarette packaging production line. It mainly uses the cam-link mechanism and the air circuit system to complete the suction and opening of the carton skin. However, the existing carton opening air circuit control method is not designed reasonably, resulting in unstable system air pressure, which seriously affects the overall operating efficiency and stability of the equipment. At the same time, the vacuum breaking time of the equipment is long when it is working, and energy waste is large. Summary of the invention

[0003] The invention provides a box opening device and a control method thereof, so as to solve the problems of unstable air pressure, long vacuum breaking time and low efficiency of the existing box opening device.

[0004] According to a first aspect of the present invention, there is provided a box opening device, comprising: a suction cup group, a positive pressure pipeline, a negative pressure pipeline, a positive and negative pressure switch valve group, a vacuum breaking valve group and a control unit;

[0005] The suction cup group is connected to the positive pressure pipeline and the negative pressure pipeline respectively; the positive and negative pressure switch valve groups are arranged on the connecting gas path between the suction cup group and the positive pressure pipeline and on the connecting gas path between the suction cup group and the negative pressure pipeline; the vacuum breaking valve group is arranged on the positive pressure pipeline;

[0006] The control unit is communicated with the positive and negative pressure switching valve group and the vacuum breaking valve group respectively, and is used to control the positive and negative pressure switching valve group to connect the suction cup group and the negative pressure pipeline, so that the suction cup group generates negative pressure to adsorb the box to be opened; the control unit is also used to control the positive and negative pressure switching valve group to connect the suction cup group and the positive pressure pipeline after the box to be opened is opened, and at the same time control the vacuum breaking valve group to open, so that the suction cup group generates positive pressure to stop adsorbing the box to be opened.

[0007] Optionally, the suction cup group includes a bottom suction cup, a front suction cup and a rear suction cup;

[0008] The positive and negative pressure switch valve group includes a first positive and negative pressure switch valve, a second positive and negative pressure switch valve and a third positive and negative pressure switch valve; the vacuum breaking valve group includes a first vacuum breaking valve, a second vacuum breaking valve and a third vacuum breaking valve;

[0009] The first positive and negative pressure switch valve is arranged on the connecting gas path between the bottom suction cup and the positive pressure pipeline and on the connecting gas path between the bottom suction cup and the negative pressure pipeline; the first vacuum breaking valve is arranged on the positive pressure pipeline;

[0010] The second positive and negative pressure switch valve is arranged on the connecting gas path between the front suction cup and the positive pressure pipeline and on the connecting gas path between the front suction cup and the negative pressure pipeline; the second vacuum breaking valve is arranged on the positive pressure pipeline;

[0011] The third positive and negative pressure switch valve is arranged on the connecting gas path between the rear suction cup and the positive pressure pipeline and on the connecting gas path between the rear suction cup and the negative pressure pipeline; the third vacuum breaking valve is arranged on the positive pressure pipeline;

[0012] The control unit is used to control the first positive and negative pressure switching valve to connect the bottom suction cup and the negative pressure pipeline, so that the bottom suction cup adsorbs the bottom surface of the box to be opened; it is also used to control the connection of the front suction cup and the negative pressure pipeline as well as the rear suction cup and the negative pressure pipeline when the box to be opened moves to a specific position, so that the front suction cup and the rear suction cup adsorb the sides of the box to be opened, thereby opening the box to be opened; it is also used to control the third positive and negative pressure switching valve to connect the rear suction cup and the positive pressure pipeline after the box to be opened is opened, and at the same time control the first vacuum breaking valve to open within a first preset time.

[0013] Optionally, the control unit is also connected to the packing device for communication, and is also used to control the second positive and negative pressure switching valve to connect the front suction cup and the positive pressure pipeline, and to control the second vacuum breaking valve to open within a second preset time when the packing device transports the packing materials into the box to be opened for the first time; and is also used to control the first positive and negative pressure switching valve to connect the bottom suction cup and the positive pressure pipeline, and to control the first vacuum breaking valve to open within a third preset time after the packing device completes packing.

[0014] Optionally, the first vacuum breaking valve, the second vacuum breaking valve and the third vacuum breaking valve are all two-position two-way solenoid valves;

[0015] The first end of the first vacuum breaker valve is connected to the bottom suction cup, and the second end is connected to the air pressure source of the positive pressure pipeline;

[0016] The first end of the second vacuum breaker valve is connected to the front suction cup, and the second end is connected to the compressed air source of the positive pressure pipeline;

[0017] The first end of the third vacuum breaking valve is communicated with the rear suction cup, and the second end is communicated with the air pressure source of the positive pressure pipeline.

[0018] Optionally, the first positive and negative pressure switch valve, the second positive and negative pressure switch valve and the third positive and negative pressure switch valve are all two-position five-way solenoid valves;

[0019] The first end of the first positive and negative pressure switch valve is connected to the bottom suction cup, the second end is connected to the positive pressure pipeline, and the third end is connected to the negative pressure pipeline;

[0020] The first end of the second positive and negative pressure switch valve is connected to the front suction cup, the second end is connected to the positive pressure pipeline, and the third end is connected to the negative pressure pipeline;

[0021] The first end of the third positive and negative pressure switch valve is connected to the rear suction cup, the second end is connected to the positive pressure pipeline, and the third end is connected to the negative pressure pipeline.

[0022] Optionally, a connecting rod mechanism is also included;

[0023] The suction cup group is fixedly connected to the connecting rod mechanism; the control unit is communicatively connected to the connecting rod mechanism and is used to control the movement of the connecting rod mechanism to drive the suction cup group to move to a preset position.

[0024] According to a second aspect of the present invention, a control method for a box opening device is provided, which is applied to the box opening device; the control method comprises:

[0025] Control the positive and negative pressure switch valve groups to conduct the suction cup group and the negative pressure pipeline, so that the suction cup group generates negative pressure to adsorb the box to be opened;

[0026] After the box to be opened is opened, the positive and negative pressure switch valve group is controlled to conduct the suction cup group and the positive pressure pipeline, and the vacuum breaking valve group is controlled to open, so that the suction cup group generates positive pressure to stop adsorbing the box to be opened.

[0027] Optionally, the suction cup group includes a bottom suction cup, a front suction cup and a rear suction cup; the positive and negative pressure switch valve group includes a first positive and negative pressure switch valve, a second positive and negative pressure switch valve and a third positive and negative pressure switch valve; the vacuum breaking valve group includes a first vacuum breaking valve, a second vacuum breaking valve and a third vacuum breaking valve;

[0028] Control the positive and negative pressure switch valve group to conduct the suction cup group and the negative pressure pipeline, including:

[0029] Control the first positive and negative pressure switch valve to conduct the bottom suction cup and the negative pressure pipeline, so that the bottom suction cup adsorbs the bottom surface of the box to be opened;

[0030] When the box to be opened moves to a specific position, the front suction cup and the negative pressure pipeline as well as the rear suction cup and the negative pressure pipeline are controlled to be connected, so that the front suction cup and the rear suction cup adsorb the side of the box to be opened, thereby opening the box to be opened;

[0031] After the box to be opened is opened, the positive and negative pressure switch valve group is controlled to conduct the suction cup group and the positive pressure pipeline, and the vacuum breaking valve group is controlled to open, including:

[0032] After the box to be opened is opened, the third positive and negative pressure switch valve is controlled to conduct the rear suction cup and the positive pressure pipeline, and the first vacuum breaking valve is controlled to open within the first preset time.

[0033] Optionally, the control unit is also in communication connection with the box packing device;

[0034] After the box to be opened is opened, the third positive and negative pressure switch valve is controlled to conduct the rear suction cup and the positive pressure pipeline, and the first vacuum breaking valve is controlled to open within the first preset time, and the method further includes:

[0035] When the packing device transports the packing materials into the box to be opened for the first time, the second positive and negative pressure switch valve is controlled to connect the rear suction cup and the positive pressure pipeline, and the second vacuum breaking valve is controlled to open within the second preset time;

[0036] After the packing device completes packing, the first positive and negative pressure switch valve is controlled to connect the rear suction cup and the positive pressure pipeline, and the first vacuum breaking valve is controlled to open within a third preset time.

[0037] Optionally, the unpacking device further includes a connecting rod mechanism;

[0038] Controlling the positive and negative pressure switch valve groups to conduct the suction cup group and the negative pressure pipeline so that the suction cup group generates negative pressure to adsorb the box to be opened, and also includes:

[0039] The linkage mechanism is controlled to move to drive the suction cup assembly to a preset position.

[0040] The technical solution of the present invention is to set a suction cup group, a positive pressure pipeline, a negative pressure pipeline, a positive and negative pressure switching valve group, a vacuum breaking valve group and a control unit. The control unit controls the positive and negative pressure switching valve group to connect the suction cup group and the negative pressure pipeline, so that the suction cup group adsorbs the box to be opened and unfolds it. After the box to be opened is opened, the positive and negative pressure switching valve group and the vacuum breaking valve group are controlled to connect the suction cup group and the positive pressure pipeline to release the box to be opened. Through this collaborative mechanism, it can be ensured that during the unpacking process, the suction cup group can accurately and stably absorb the box to be opened and complete the unpacking and forming action. At the same time, the design of the valve group on the pipeline improves the stability of the air pressure of the unpacking device and improves the unpacking efficiency.

[0041] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0043] Figure 1 is a working schematic diagram of a box opening device provided according to an embodiment of the present invention;

[0044] Figure 2 is a schematic diagram of gas circuit connection of a box opening device provided according to an embodiment of the present invention;

[0045] Figure 3 is a communication connection diagram of a box opening device provided according to an embodiment of the present invention;

[0046] Figure 4 is a schematic diagram of a control method of a first box opening device provided according to an embodiment of the present invention;

[0047] Figure 5 is a schematic diagram of a control method of a second box opening device provided according to an embodiment of the present invention;

[0048] Figure 6 is a schematic diagram of a control method of a third box opening device provided according to an embodiment of the present invention;

[0049] Figure 7 Schematic diagram of a control method for a fourth box opening device provided according to an embodiment of the present invention. DETAILED DESCRIPTION

[0050] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0051] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0052] Figure 1 is a working schematic diagram of a box opening device provided according to an embodiment of the present invention, Figure 2 is a schematic diagram of gas circuit connection of a box opening device provided according to an embodiment of the present invention. Figure 3 1 is a communication connection diagram of a box opening device provided according to an embodiment of the present invention. Figure 1 , Figure 2 and Figure 3 As shown, the unpacking device includes: a suction cup group 1, a positive pressure pipeline 2, a negative pressure pipeline 3, a positive and negative pressure switch valve group 4, a vacuum breaking valve group 5 and a control unit 6;

[0053] The suction cup group 1 is connected to the positive pressure pipeline 2 and the negative pressure pipeline 3 respectively; the positive and negative pressure switch valve group 4 is arranged on the connecting gas path between the suction cup group 1 and the positive pressure pipeline 2 and on the connecting gas path between the suction cup group 1 and the negative pressure pipeline 3; the vacuum breaking valve group 5 is arranged on the positive pressure pipeline 2;

[0054] The control unit 6 is communicated with the positive and negative pressure switch valve group 4 and the vacuum breaking valve group 5 respectively, and is used to control the positive and negative pressure switch valve group 4 to connect the suction cup group 1 and the negative pressure pipeline 3, so that the suction cup group 1 generates negative pressure to adsorb the box to be opened 7; the control unit 6 is also used to control the positive and negative pressure switch valve group 4 to connect the suction cup group 1 and the positive pressure pipeline 2 after the box to be opened 7 is opened, and at the same time control the vacuum breaking valve group 5 to open, so that the suction cup group 1 generates positive pressure to stop adsorbing the box to be opened 7.

[0055] The suction cup set 1 can be used to absorb the box body 7 to be opened, and can pull the box body 7 to be opened into shape by applying the absorption force to different surfaces of the box body 7 to be opened, thereby completing the opening and forming action of the box body 7 to be opened.

[0056] Among them, the suction cup group 1 is connected to the positive pressure pipeline 2 and the negative pressure pipeline 3 respectively; the positive pressure pipeline 2 can be used to transport the air pressure source to the suction cup group 1, so that positive pressure is generated in the suction cup group 1 to release the box 7 to be opened; the negative pressure pipeline 3 can be used to provide negative pressure to the suction cup group 1 to adsorb the box 7 to be opened.

[0057] Among them, the positive and negative pressure switch valve group 4 is set on the connecting air path between the suction cup group 1 and the positive pressure pipeline 2 and on the connecting air path between the suction cup group 1 and the negative pressure pipeline 3. The control unit 6 is communicated with the positive and negative pressure switch valve group 4. The control unit 6 can realize the switching of the suction cup group 1 and the positive pressure pipeline 2 and the suction cup group 1 and the negative pressure pipeline 3 by controlling the positive and negative pressure switch valve group 4, thereby completing the adsorption control of the suction cup group 1 on the box body 7 to be opened.

[0058] Among them, the vacuum breaking valve group 5 is arranged on the positive pressure pipeline 2. When the control unit 6 controls the positive and negative pressure switch valve group 4 to realize the conduction between the suction cup group 1 and the positive pressure pipeline 2, the vacuum breaking valve group 5 is controlled to be connected at the same time, so that the air pressure source enters the suction cup group 1, so that the suction cup group 1 releases the box 7 to be opened.

[0059] Specifically, the control unit 6 first controls the suction cup group 1 to move to the box 7 to be opened and controls the positive and negative pressure switch valve group 4 to connect the suction cup group 1 and the negative pressure pipeline 3, so that negative pressure is generated in the suction cup group 1 to adsorb the box 7 to be opened. The suction cup group 1 applies adsorption force to different surfaces of different boxes 7 to be opened, and the boxes 7 to be opened are pulled apart to form. After the box 7 to be opened is opened, the positive and negative pressure switch valve group 4 is controlled to connect the suction cup group 1 and the positive pressure pipeline 2, and the vacuum breaking valve group 5 is controlled to open, and the compressed air source enters the suction cup group 1, and positive pressure is generated in the suction cup group 1, and the box 7 to be opened is released, thereby completing the opening action.

[0060] It is understandable that, on the basis of the negative pressure pipeline 3 adsorbing the box body 7 to be opened, a positive pressure pipeline 2 is also provided, and the box body 7 to be opened is released through the positive pressure pipeline 2, so as to avoid the problem that the vacuum remaining in the negative pressure pipeline 3 is closed and the suction cup group 1 cannot be separated from the box body 7 to be opened in a short time. By providing the positive pressure pipeline 2, the suction cup group 1 can become positive pressure while the negative pressure pipeline 3 is closed, so that the suction cup group 1 immediately releases the box body 7 to be opened, shortening the time for the suction cup group 1 to break the vacuum and improving the opening efficiency. At the same time, the positive pressure pipeline 2 and the negative pressure pipeline 3 in the embodiment of the present invention are two independent pipelines, and the switching between the positive pressure pipeline 2-suction cup group 1 and the negative pressure pipeline 3-suction cup group 1 is realized by providing the positive and negative pressure switch valve group 4, so as to ensure that during the opening process, the suction cup group 1 can accurately and stably absorb the box body 7 to be opened and complete the opening and forming action. In addition, the vacuum breaking valve group 5 is arranged on the positive pressure pipeline 2, isolating the positive and negative pressure switch valve group 4 from the compressed air source, thereby avoiding the problem that the system pressure will be reduced due to the instantaneous release of a large amount of positive pressure for a long time when breaking the vacuum, thereby causing the air pressure to be unstable and affecting the working performance.

[0061] The technical solution of the embodiment of the present invention is to set a suction cup group, a positive pressure pipeline, a negative pressure pipeline, a positive and negative pressure switching valve group, a vacuum breaking valve group and a control unit. The control unit controls the positive and negative pressure switching valve group to connect the suction cup group and the negative pressure pipeline, so that the suction cup group adsorbs the box to be opened and unfolds it. After the box to be opened is opened, the positive and negative pressure switching valve group and the vacuum breaking valve group are controlled to connect the suction cup group and the positive pressure pipeline to release the box to be opened. Through this collaborative mechanism, it can be ensured that during the unpacking process, the suction cup group can accurately and stably absorb the box to be opened and complete the unpacking and forming action. At the same time, the design of the valve group on the pipeline improves the stability of the air pressure of the unpacking device and improves the unpacking efficiency.

[0062] Optional, continue to refer to Figure 1 , Figure 2 and Figure 3 As shown, the suction cup set 1 includes a bottom suction cup 11, a front suction cup 12 and a rear suction cup 13;

[0063] The positive and negative pressure switch valve group 4 includes a first positive and negative pressure switch valve 41, a second positive and negative pressure switch valve 42 and a third positive and negative pressure switch valve 43; the vacuum breaking valve group 5 includes a first vacuum breaking valve 51, a second vacuum breaking valve 52 and a third vacuum breaking valve 53;

[0064] The first positive and negative pressure switch valve 41 is arranged on the connecting gas path between the bottom suction cup 11 and the positive pressure pipeline 2 and on the connecting gas path between the bottom suction cup 11 and the negative pressure pipeline 3; the first vacuum breaker valve 51 is arranged on the positive pressure pipeline 2;

[0065] The second positive and negative pressure switch valve 42 is arranged on the connecting air path between the front suction cup 12 and the positive pressure pipeline 2 and on the connecting air path between the front suction cup 12 and the negative pressure pipeline 3; the second vacuum breaker valve 52 is arranged on the positive pressure pipeline 2;

[0066] The third positive and negative pressure switch valve 43 is arranged on the connecting gas path between the rear suction cup 13 and the positive pressure pipeline 2 and on the connecting gas path between the rear suction cup 13 and the negative pressure pipeline 3; the third vacuum breaking valve 53 is arranged on the positive pressure pipeline 2;

[0067] The control unit 6 is used to control the first positive and negative pressure switch valve 41 to connect the bottom suction cup 11 and the negative pressure pipeline 3, so that the bottom suction cup 11 adsorbs the bottom surface of the box 7 to be opened; it is also used to control the connection of the front suction cup 12 and the negative pressure pipeline 3 as well as the rear suction cup 13 and the negative pressure pipeline 3 when the box 7 to be opened moves to a specific position, so that the front suction cup 12 and the rear suction cup 13 adsorb the side of the box 7 to be opened, and then open the box 7 to be opened; it is also used to control the third positive and negative pressure switch valve 43 to connect the rear suction cup 13 and the positive pressure pipeline 2 after the box 7 to be opened is opened, and at the same time control the first vacuum breaking valve 51 to open within a first preset time.

[0068] The bottom suction cup 11, the front suction cup 12 and the rear suction cup 13 can be used to suck different positions of the box body 7 to be opened. The bottom suction cup 11 can be used to suck the bottom surface of the box body 7 to be opened, the front suction cup 12 can be used to suck the first position of the side of the box body 7 to be opened, and the rear suction cup 13 can be used to suck the second position of the side of the box body 7 to be opened. Through different suction positions, when the suction cup group 1 acts on the box body 7 to be opened at the same time, the box body 7 to be opened can be pulled open and formed.

[0069] Among them, the first positive and negative pressure switch valve 41, the second positive and negative pressure switch valve 42 and the third positive and negative pressure switch valve 43 correspond to the switching valves of the positive pressure pipeline 2 and the negative pressure pipeline 3 of the bottom suction cup 11, the front suction cup 12 and the rear suction cup 13 respectively. The first vacuum breaking valve 51, the second vacuum breaking valve 52 and the third vacuum breaking valve 53 correspond to the conduction valves of the positive pressure pipeline 2 of the bottom suction cup 11, the front suction cup 12 and the rear suction cup 13 respectively. The first positive and negative pressure switch valve 41 is arranged on the connecting air path between the bottom suction cup 11 and the positive pressure pipeline 2 and on the connecting air path between the bottom suction cup 11 and the negative pressure pipeline 3. By controlling the first positive and negative pressure switch valve 41, the conduction between the bottom suction cup 11 and the positive pressure pipeline 2 or the negative pressure pipeline 3 can be controlled; the second positive and negative pressure switch valve 42 is arranged on the connecting air path between the front suction cup 12 and the positive pressure pipeline 2 and on the connecting air path between the front suction cup 12 and the negative pressure pipeline 3. By controlling the second positive and negative pressure switch valve 42, the conduction between the front suction cup 12 and the positive pressure pipeline 2 or the negative pressure pipeline 3 can be controlled; the third positive and negative pressure switch valve 43 is arranged on the connecting air path between the rear suction cup 13 and the positive pressure pipeline 2 and on the connecting air path between the rear suction cup 13 and the negative pressure pipeline 3. By controlling the third positive and negative pressure switch valve 43, the conduction between the rear suction cup 13 and the positive pressure pipeline 2 or the negative pressure pipeline 3 can be controlled. By controlling the first vacuum breaking valve 51 , the second vacuum breaking valve 52 and the third vacuum breaking valve 53 , the compressed air source on the positive pressure pipeline 2 can be controlled to be connected with the corresponding suction cup, thereby completing the release of the box body 7 to be opened.

[0070] Exemplarily, the compressed air source includes one, which is connected to the corresponding bottom suction cup 11, the front suction cup 12 and the rear suction cup 13 through the air separation valve; the vacuum side is also connected to the corresponding bottom suction cup 11, the front suction cup 12 and the rear suction cup 13 through the air separation valve. Positive pressure pipelines 2 are respectively arranged between the compressed air source and the bottom suction cup 11, the front suction cup 12 and the rear suction cup 13, and negative pressure pipelines 3 are respectively arranged between the vacuum side and the bottom suction cup 11, the front suction cup 12 and the rear suction cup 13. A first positive and negative pressure switch valve 41 and a first vacuum breaking valve 51 are arranged on the positive pressure pipeline 2 between the bottom suction cup 11 and the compressed air source, and a first positive and negative pressure switch valve 41 is arranged on the negative pressure pipeline 3 between the bottom suction cup 11 and the compressed air source; a second positive and negative pressure switch valve 42 and a second vacuum breaking valve 52 are arranged on the positive pressure pipeline 2 between the front suction cup 12 and the compressed air source, and a second positive and negative pressure switch valve 42 is arranged on the negative pressure pipeline 3 between the front suction cup 12 and the compressed air source; a third positive and negative pressure switch valve 43 and a third vacuum breaking valve 53 are arranged on the positive pressure pipeline 2 between the rear suction cup 13 and the compressed air source, and a third positive and negative pressure switch valve 43 is arranged on the negative pressure pipeline 3 between the rear suction cup 13 and the compressed air source.

[0071] When the control unit 6 is controlling, first, the control unit 6 controls the suction cup group 1 to move to the box 7 to be opened and controls the first positive and negative pressure switch valve 41 to connect the bottom suction cup 11 and the negative pressure pipeline 3, so that the bottom suction cup 11 adsorbs the bottom surface of the box 7 to be opened. In this process, the bottom suction cup 11 can be moved to drive the box 7 to be opened to a specific position, such as a packing position. When the box 7 to be opened moves to a specific position, the front suction cup 12 and the negative pressure pipeline 3 and the rear suction cup 13 and the negative pressure pipeline 3 are controlled to be connected, so that the front suction cup 12 and the rear suction cup 13 adsorb the side of the box 7 to be opened, so that both the bottom and the side have adsorption force, and then the box 7 to be opened is opened. After the box 7 to be opened is opened, the third positive and negative pressure switch valve 43 is controlled to connect the rear suction cup 13 and the positive pressure pipeline 2, and the first vacuum breaking valve 51 is controlled to open within the first preset time, so that the rear suction cup 13 releases the box 7 to be opened, and the subsequent packing steps are performed.

[0072] It is understandable that after the box 7 to be opened is opened, only the bottom suction cup 11 and the front suction cup 12 are needed to ensure that the box 7 to be opened is opened for the subsequent packing steps, and the rear suction cup 13 does not need to continue to work, so the rear suction cup 13 can be closed. The first preset time can be a time set by the system to achieve the purpose of breaking the vacuum, ensuring that the rear suction cup 13 releases the box 7 to be opened.

[0073] The technical solution of the embodiment of the present invention is to arrange a bottom suction cup, a front suction cup and a rear suction cup in the suction cup group, and to arrange a first positive and negative pressure switch valve, a second positive and negative pressure switch valve and a third positive and negative pressure switch valve and a first vacuum breaking valve, a second vacuum breaking valve and a third vacuum breaking valve accordingly. By coordinated control of the bottom suction cup, the front suction cup and the rear suction cup, the suction cup can absorb the carton skin more stably and accurately, thereby improving the success rate of unpacking. At the same time, by accurately controlling the switching of positive and negative pressures and the opening and closing of the positive pressure air circuit, the influence of air pressure fluctuations on the operation of the equipment is reduced, energy is saved, and packaging efficiency is improved.

[0074] Optional, continue to refer to Figure 1 , Figure 2 and Figure 3 As shown, the control unit 6 is also connected to the packing device 9 for communication, and is also used to control the second positive and negative pressure switch valve 42 to connect the front suction cup 12 and the positive pressure pipeline 2, and control the second vacuum breaking valve 52 to open within the second preset time when the packing device 9 transports the packing materials into the box body 7 to be opened for the first time; it is also used to control the first positive and negative pressure switch valve 41 to connect the bottom suction cup 11 and the positive pressure pipeline 2, and control the first vacuum breaking valve 51 to open within the third preset time after the packing device 9 completes the packing.

[0075] Among them, the packing device 9 can be a structure independent of the unpacking device, and can be used to load packing materials into the box body 7 to be opened to complete the packaging. After the unpacking of the box body 7 to be opened is completed, the packing process continues. The control unit 6 is also connected to the packing device 9 for communication. When the packing device 9 first transports the packing materials into the box body 7 to be opened, since the packing materials can have a certain supporting effect on the box body 7 to be opened, the front suction cup 12 can be released from adsorbing the box body 7 to be opened, and the second positive and negative pressure switch valve 42 is controlled to connect the front suction cup 12 and the positive pressure pipeline 2, and the second vacuum breaking valve 52 is controlled to open within the second preset time, and the vacuum of the front suction cup 12 is broken for the second preset time. After the packing device 9 completes the packing, the first positive and negative pressure switch valve 41 is controlled to connect the bottom suction cup 11 and the positive pressure pipeline 2, and the first vacuum breaking valve 51 is controlled to open within the third preset time, and the bottom suction cup 11 is controlled to release the box, thereby completing the unpacking and packing process.

[0076] Exemplarily, S1, the control unit 6 controls the bottom suction cup 11 to move to the box suction position, and controls the first positive and negative pressure switch valve 41 to be powered and the negative pressure gas circuit is connected, and the bottom suction cup 11 absorbs the bottom surface of the box body 7 to be opened to complete the box removal action;

[0077] S2, the control unit 6 controls the bottom suction cup 11 to move and drive the box 7 to be opened to continue to move downward to a specific position. At the same time, after the front suction cup 12 and the rear suction cup 13 approach the side of the box 7 to be opened, the second positive and negative pressure switch valve 42 and the third positive and negative pressure switch valve 43 are controlled to be powered and the negative pressure gas circuit is connected at the same time, and the front suction cup 12 and the rear suction cup 13 simultaneously adsorb the side of the box 7 to be opened. At this time, the bottom suction cup 11, the front suction cup 12 and the rear suction cup 13 can continue to move until the box 7 to be opened is pulled open and formed;

[0078] S3. After the box 7 to be opened is successfully opened, the first positive and negative pressure switch valve 41 and the second positive and negative pressure switch valve 42 are always in the energized state, the negative pressure air circuit is opened, and the box is maintained in the open state waiting for loading. The third positive and negative pressure switch valve 43 is controlled to lose power and close the negative pressure, the rear suction cup 13 breaks the vacuum, the third vacuum breaking valve 53 is energized to connect the positive pressure air circuit, and after a delay of 50ms, the rear suction cup 13 breaks the vacuum and the third vacuum breaking valve 53 loses power and closes the positive pressure blowing;

[0079] S4, when the boxing device 9 pushes the specified amount of boxing materials into the box body 7 for the first time, after the boxing pushing action is completed, the second positive and negative pressure switch valve 42 loses power and closes the negative pressure air path, and at the same time, the second vacuum breaking valve 52 is energized to connect the positive pressure air path. After a delay of 50ms, the second vacuum breaking valve 52 loses power and closes the positive pressure blowing;

[0080] S5. After the packing is completed, the first positive and negative pressure switch valve 41 loses power and closes the negative pressure air circuit. At the same time, the first vacuum breaking valve 51 is energized to connect the positive pressure air circuit. After a delay of 100ms, the first vacuum breaking valve 51 loses power and closes the positive pressure blowing. The whole unpacking and packing process is now completed.

[0081] It can be understood that the first preset time, the second preset time and the third preset time can be the same or different, depending on the action of the corresponding suction cup and the effect of breaking the vacuum.

[0082] The technical solution of the embodiment of the present invention is to complete the unpacking and packing process by controlling the control unit to connect the packing device and the unpacking device to cooperate with the packing device to pack the box to be opened. By accurately controlling the switching of positive and negative pressures and the opening and closing of the positive pressure air circuit, the influence of air pressure fluctuations on the operation of the equipment is reduced, energy is saved, and packaging efficiency is improved.

[0083] Optional, continue to refer to Figure 1 , Figure 2 and Figure 3 As shown, the first vacuum-breaking valve 51, the second vacuum-breaking valve 52 and the third vacuum-breaking valve 53 are all two-position two-way solenoid valves;

[0084] The first end of the first vacuum breaker valve 51 is connected to the bottom suction cup 11, and the second end is connected to the compressed air source of the positive pressure pipeline 2;

[0085] The first end of the second vacuum breaker valve 52 is connected to the front suction cup 12, and the second end is connected to the compressed air source of the positive pressure pipeline 2;

[0086] A first end of the third vacuum breaker valve 53 is communicated with the rear suction cup 13 , and a second end thereof is communicated with the compressed air source of the positive pressure pipeline 2 .

[0087] Among them, the two-position two-way solenoid valve has only two working states. In the closed state, the first end and the second end are cut off, and the gas cannot pass through; in the open state, the first end and the second end are connected, and the gas can pass through. The first end of the first vacuum breaker valve 51 is connected to the bottom suction cup 11, and the second end is connected to the compressed air source of the positive pressure pipeline 2. By controlling the opening and closing of the first vacuum breaker valve 51, the conduction and shutoff of the compressed air source can be controlled. The first end of the second vacuum breaker valve 52 is connected to the front suction cup 12, and the second end is connected to the compressed air source of the positive pressure pipeline 2. By controlling the opening and closing of the second vacuum breaker valve 52, the conduction and shutoff of the compressed air source can be controlled. The first end of the third vacuum breaker valve 53 is connected to the rear suction cup 13, and the second end is connected to the compressed air source of the positive pressure pipeline 2. By controlling the opening and closing of the third vacuum breaker valve 53, the conduction and shutoff of the compressed air source can be controlled.

[0088] The technical solution of the embodiment of the present invention realizes precise control of the compressed air source by setting the first vacuum breaking valve, the second vacuum breaking valve and the third vacuum breaking valve as two-position two-way solenoid valves, ensures the isolation of the compressed air source and the positive and negative pressure switching valve groups, and improves the air pressure stability.

[0089] Optional, continue to refer to Figure 1 , Figure 2 and Figure 3 As shown, the first positive and negative pressure switch valve 41, the second positive and negative pressure switch valve 42 and the third positive and negative pressure switch valve 43 are all two-position five-way solenoid valves;

[0090] The first end of the first positive and negative pressure switch valve 41 is connected to the bottom suction cup 11, the second end is connected to the positive pressure pipeline 2, and the third end is connected to the negative pressure pipeline 3;

[0091] The first end of the second positive and negative pressure switch valve 42 is connected to the front suction cup 12, the second end is connected to the positive pressure pipeline 2, and the third end is connected to the negative pressure pipeline 3;

[0092] The first end of the third positive and negative pressure switch valve 43 is connected to the rear suction cup 13 , the second end is connected to the positive pressure pipeline 2 , and the third end is connected to the negative pressure pipeline 3 .

[0093] The two-position five-way solenoid valve may be a solenoid valve with two working states and five interfaces. By controlling the opening of the two-position five-way solenoid valve, the first end and the second end may be controlled to be connected; by controlling the closing of the two-position five-way solenoid valve, the first end and the third end may be controlled to be connected.

[0094] Specifically, the first end of the first positive and negative pressure switch valve 41 is connected to the bottom suction cup 11, the second end is connected to the positive pressure pipeline 2, and the third end is connected to the negative pressure pipeline 3. When the first positive and negative pressure switch valve 41 is powered, the first end is connected to the third end, so that the bottom suction cup 11 is connected to the negative pressure pipeline 3; when the first positive and negative pressure switch valve 41 is powered off, the first end is connected to the second end, so that the bottom suction cup 11 is connected to the positive pressure pipeline 2. The first end of the second positive and negative pressure switch valve 42 is connected to the front suction cup 12, the second end is connected to the positive pressure pipeline 2, and the third end is connected to the negative pressure pipeline 3; when the second positive and negative pressure switch valve 42 is powered, the first end is connected to the third end, so that the front suction cup 12 is connected to the negative pressure pipeline 3; when the second positive and negative pressure switch valve 42 is powered off, the first end is connected to the second end, so that the front suction cup 12 is connected to the positive pressure pipeline 2. The first end of the third positive and negative pressure switch valve 43 is connected to the rear suction cup 13, the second end is connected to the positive pressure pipeline 2, and the third end is connected to the negative pressure pipeline 3; when the third positive and negative pressure switch valve 43 is energized, the first end is connected to the third end, so that the rear suction cup 13 is connected to the negative pressure pipeline 3; when the third positive and negative pressure switch valve 43 loses power, the first end is connected to the second end, so that the rear suction cup 13 is connected to the positive pressure pipeline 2.

[0095] According to the technical solution of the embodiment of the present invention, the first positive and negative pressure switch valve, the second positive and negative pressure switch valve and the third positive and negative pressure switch valve are all two-position five-way solenoid valves, which realize precise control of the positive and negative pipelines, reduce the impact of air pressure fluctuations on equipment operation, and save energy.

[0096] Optional, continue to refer to Figure 1 , Figure 2 and Figure 3 As shown, it also includes a connecting rod mechanism 8;

[0097] The suction cup group 1 is fixedly connected to the connecting rod mechanism 8; the control unit 6 is communicatively connected to the connecting rod mechanism 8 and is used to control the movement of the connecting rod mechanism 8 to drive the suction cup group 1 to move to a preset position.

[0098] The connecting rod mechanism 8 may be a structure for driving the suction cup to move. Specifically, it may include a cam connecting rod mechanism 8, and the control unit 6 may drive the mechanical cam connecting rod mechanism 8 through the main shaft to realize the coordinated movement of the suction cup. In some embodiments, a main shaft encoder is also provided in the connecting rod mechanism 8, and the coordinated control with the positive and negative pressure switch valve group 4 and the vacuum breaking valve group 5 is realized according to the angle change of the main shaft encoder.

[0099] Among them, the preset position may include a box suction position, a box loading position, etc. of the box body 7 to be opened.

[0100] In some embodiments, multiple groups of connecting rod mechanisms 8 may be included, and the multiple groups of connecting rod mechanisms 8 are respectively connected to corresponding suction cups, thereby driving the suction cups to move respectively.

[0101] Specifically, the control unit 6 can control the connecting rod mechanism 8 to drive the bottom suction cup 11 to move to the box suction position, and control the connecting rod mechanism 8 to drive the bottom suction cup 11 to move to the box loading position after sucking the box body 7 to be opened. After the suction cup group 1 has sucked the box body 7 to be opened, the connecting rod mechanism 8 can be controlled to move the bottom suction cup 11, the front suction cup 12 and the rear suction cup 13 respectively, so as to pull the box body 7 to be opened and form it, thereby achieving the purpose of opening the box.

[0102] The technical solution of the embodiment of the present invention realizes the unpacking and movement of the box to be opened by setting a connecting rod mechanism and coordinating and controlling the connecting rod mechanism with the suction cup group, thereby improving the packaging efficiency of the production line.

[0103] Based on the same inventive concept, Figure 4 is a schematic diagram of a control method of a first box opening device provided according to an embodiment of the present invention. An embodiment of the present invention provides a control method of a box opening device, which is applied to the box opening device; Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the control method includes:

[0104] S10, controlling the positive and negative pressure switch valve groups to conduct the suction cup group and the negative pressure pipeline, so that the suction cup group generates negative pressure to adsorb the box to be opened.

[0105] S11. After the box to be opened is opened, the positive and negative pressure switch valve group is controlled to conduct the suction cup group and the positive pressure pipeline, and the vacuum breaking valve group is controlled to open, so that the suction cup group generates positive pressure to stop adsorbing the box to be opened.

[0106] Specifically, the control unit 6 first controls the suction cup group 1 to move to the box 7 to be opened and controls the positive and negative pressure switch valve group 4 to connect the suction cup group 1 and the negative pressure pipeline 3, so that negative pressure is generated in the suction cup group 1 to adsorb the box 7 to be opened. The suction cup group 1 applies adsorption force to different surfaces of different boxes 7 to be opened, and the boxes 7 to be opened are pulled apart to form. After the box 7 to be opened is opened, the positive and negative pressure switch valve group 4 is controlled to connect the suction cup group 1 and the positive pressure pipeline 2, and the vacuum breaking valve group 5 is controlled to open, and the compressed air source enters the suction cup group 1, and positive pressure is generated in the suction cup group 1, and the box 7 to be opened is released, thereby completing the opening action.

[0107] The technical solution of the embodiment of the present invention is to control the positive and negative pressure switching valve groups through the control unit to connect the suction cup group and the negative pressure pipeline, so that the suction cup group adsorbs the box to be opened and unfolds it; after the box to be opened is opened, the positive and negative pressure switching valve groups and the vacuum breaking valve groups are controlled to connect the suction cup group and the positive pressure pipeline to release the box to be opened. Through this collaborative mechanism, it can be ensured that during the unpacking process, the suction cup group can accurately and stably absorb the box to be opened and complete the unpacking and forming action; at the same time, the design of the valve group on the pipeline improves the stability of the air pressure of the unpacking device and improves the unpacking efficiency.

[0108] Based on the above embodiments, Figure 5 is a schematic diagram of a control method of a second box opening device provided according to an embodiment of the present invention, combined with Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the suction cup group 1 includes a bottom suction cup 11, a front suction cup 12 and a rear suction cup 13; the positive and negative pressure switch valve group 4 includes a first positive and negative pressure switch valve 41, a second positive and negative pressure switch valve 42 and a third positive and negative pressure switch valve 43; the vacuum breaking valve group 5 includes a first vacuum breaking valve 51, a second vacuum breaking valve 52 and a third vacuum breaking valve 53; the control method includes:

[0109] S20, controlling the first positive and negative pressure switch valve to conduct the bottom suction cup and the negative pressure pipeline, so that the bottom suction cup absorbs the bottom surface of the box to be opened.

[0110] S21. When the box to be opened moves to a specific position, the front suction cup and the negative pressure pipeline as well as the rear suction cup and the negative pressure pipeline are controlled to be connected, so that the front suction cup and the rear suction cup adsorb the side of the box to be opened, thereby opening the box to be opened.

[0111] S22, after the box to be opened is opened, the third positive and negative pressure switch valve is controlled to conduct the rear suction cup and the positive pressure pipeline, and the first vacuum breaking valve is controlled to open within a first preset time.

[0112] Specifically, when the control unit 6 performs control, the control unit 6 first controls the suction cup group 1 to move to the box 7 to be opened and controls the first positive and negative pressure switch valve 41 to connect the bottom suction cup 11 and the negative pressure pipeline 3, so that the bottom suction cup 11 adsorbs the bottom surface of the box 7 to be opened. In this process, the movable bottom suction cup 11 drives the box 7 to be opened to a specific position, such as a packing position. When the box 7 to be opened moves to a specific position, the front suction cup 12 and the negative pressure pipeline 3 and the rear suction cup 13 and the negative pressure pipeline 3 are controlled to be connected, so that the front suction cup 12 and the rear suction cup 13 adsorb the side of the box 7 to be opened, so that both the bottom and the side have adsorption force, and then the box 7 to be opened is opened. After the box 7 to be opened is opened, the third positive and negative pressure switch valve 43 is controlled to connect the rear suction cup 13 and the positive pressure pipeline 2, and the first vacuum breaking valve 51 is controlled to open within the first preset time, so that the rear suction cup 13 releases the box 7 to be opened, and the subsequent packing steps are performed.

[0113] The technical solution of the embodiment of the present invention, through the coordinated control of the bottom suction cup, the front suction cup and the rear suction cup, enables the suction cup to absorb the carton skin more stably and accurately, thereby improving the success rate of unpacking; at the same time, by accurately controlling the switching of positive and negative pressures and the opening and closing of the positive pressure air circuit, the influence of air pressure fluctuations on the operation of the equipment is reduced, energy is saved, and packaging efficiency is improved.

[0114] Based on the above embodiments, Figure 6 is a schematic diagram of a control method of a third box opening device provided according to an embodiment of the present invention, combined with Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, the control unit 6 is also in communication with the box packing device 9; the control method includes:

[0115] S30, controlling the first positive and negative pressure switch valve to conduct the bottom suction cup and the negative pressure pipeline, so that the bottom suction cup absorbs the bottom surface of the box to be opened.

[0116] S31. When the box to be opened moves to a specific position, the front suction cup and the negative pressure pipeline as well as the rear suction cup and the negative pressure pipeline are controlled to be connected, so that the front suction cup and the rear suction cup adsorb the side of the box to be opened, thereby opening the box to be opened.

[0117] S32, after the box to be opened is opened, the third positive and negative pressure switch valve is controlled to connect the rear suction cup and the positive pressure pipeline, and the first vacuum breaking valve is controlled to open within a first preset time.

[0118] S33. When the packing device transports the packing materials into the box to be opened for the first time, the second positive and negative pressure switch valve is controlled to connect the rear suction cup and the positive pressure pipeline, and the second vacuum breaking valve is controlled to open within the second preset time.

[0119] S34, after the packing device completes packing, the first positive and negative pressure switch valve is controlled to connect the rear suction cup and the positive pressure pipeline, and the first vacuum breaking valve is controlled to open within a third preset time.

[0120] Exemplarily, the control unit 6 controls the bottom suction cup 11 to move to the box suction position, and controls the first positive and negative pressure switch valve 41 to be powered on and the negative pressure air circuit to be connected, so that the bottom suction cup 11 absorbs the bottom surface of the box body 7 to be opened to complete the box removal action; the control unit 6 controls the bottom suction cup 11 to move and then drives the box body 7 to be opened to continue to move downward to a specific position, and at the same time, after the front suction cup 12 and the rear suction cup 13 approach the side of the box body 7 to be opened, the second positive and negative pressure switch valve 42 and the third positive and negative pressure switch valve 43 are controlled to be powered on and the negative pressure air circuit to be connected, so that the front suction cup 12 and the rear suction cup 13 absorb the side of the box body 7 to be opened at the same time. At this time, the bottom suction cup 11, the front suction cup 12 and the rear suction cup 13 can continue to move until they move to pull the box body 7 to be opened and form; after the box body 7 to be opened is successfully opened, the first positive and negative pressure switch valve 41 and the second positive and negative pressure switch valve 42 are always in the powered state, and the negative pressure air circuit is opened, so as to maintain the box body in the open state and wait for loading. The third positive and negative pressure switch valve 43 is controlled to lose power and close the negative pressure, the rear suction cup 13 breaks the vacuum, and the third vacuum breaking valve 53 is powered on to connect the positive pressure air circuit. After a delay of 50ms, the rear suction cup 13 breaks the vacuum and the third vacuum breaking valve 53 loses power to close the positive pressure blowing; when the packing device 9 pushes the specified amount of packing materials into the box body 7 to be opened for the first time, after the box pushing action is completed, the second positive and negative pressure switch valve 42 loses power and closes the negative pressure air circuit, and at the same time, the second vacuum breaking valve 52 is powered on to connect the positive pressure air circuit. After a delay of 50ms, the second vacuum breaking valve 52 loses power to close the positive pressure blowing; after the packing is completed, the first positive and negative pressure switch valve 41 loses power and closes the negative pressure air circuit, and at the same time, the first vacuum breaking valve 51 is powered on to connect the positive pressure air circuit. After a delay of 100ms, the first vacuum breaking valve 51 loses power and closes the positive pressure blowing, and the entire unpacking and packing process is completed.

[0121] The technical solution of the embodiment of the present invention is to complete the unpacking and packing process by controlling the control unit to connect the packing device and the unpacking device to cooperate with the packing device to pack the box to be opened. By accurately controlling the switching of positive and negative pressures and the opening and closing of the positive pressure air circuit, the influence of air pressure fluctuations on the operation of the equipment is reduced, energy is saved, and packaging efficiency is improved.

[0122] Based on the above embodiments, Figure 7 is a schematic diagram of a control method of a fourth box opening device provided according to an embodiment of the present invention, combined with Figure 1 , Figure 2 , Figure 3and Figure 7 As shown, the unpacking device further includes a connecting rod mechanism 8; the control method includes:

[0123] S40, controlling the linkage mechanism to move, so as to drive the suction cup assembly to move to a preset position.

[0124] The connecting rod mechanism 8 may be a structure for driving the suction cup to move. Specifically, it may include a cam connecting rod mechanism 8, and the control unit 6 may drive the mechanical cam connecting rod mechanism 8 through the main shaft to realize the coordinated movement of the suction cup. In some embodiments, a main shaft encoder is also provided in the connecting rod mechanism 8, and the coordinated control with the positive and negative pressure switch valve group 4 and the vacuum breaking valve group 5 is realized according to the angle change of the main shaft encoder.

[0125] S41, controlling the positive and negative pressure switch valve groups to conduct the suction cup group and the negative pressure pipeline, so that the suction cup group generates negative pressure to adsorb the box to be opened.

[0126] S42, after the box to be opened is opened, the positive and negative pressure switch valve group is controlled to conduct the suction cup group and the positive pressure pipeline, and the vacuum breaking valve group is controlled to open, so that the suction cup group generates positive pressure to stop adsorbing the box to be opened.

[0127] Specifically, the control unit 6 can control the connecting rod mechanism 8 to drive the bottom suction cup 11 to move to the box suction position, and control the connecting rod mechanism 8 to drive the bottom suction cup 11 to move to the box loading position after sucking the box body 7 to be opened. After the suction cup group 1 has sucked the box body 7 to be opened, the connecting rod mechanism 8 can be controlled to move the bottom suction cup 11, the front suction cup 12 and the rear suction cup 13 respectively, so as to pull the box body 7 to be opened and form it, thereby achieving the purpose of opening the box.

[0128] The technical solution of the embodiment of the present invention realizes the unpacking and movement of the box to be opened by setting a connecting rod mechanism and coordinating and controlling the connecting rod mechanism with the suction cup group, thereby improving the packaging efficiency of the production line.

[0129] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0130] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A box opening device, characterized in that: include: Suction cup group, positive pressure pipeline, negative pressure pipeline, positive and negative pressure switch valve group, vacuum breaking valve group and control unit; The suction cup group is connected to the positive pressure pipeline and the negative pressure pipeline respectively; the positive and negative pressure switch valve group is arranged on the connecting air path between the suction cup group and the positive pressure pipeline and on the connecting air path between the suction cup group and the negative pressure pipeline; the vacuum breaking valve group is arranged on the positive pressure pipeline; The control unit is communicatively connected with the positive and negative pressure switch valve group and the vacuum breaking valve group respectively, and is used for controlling the positive and negative pressure switch valve group to conduct the suction cup group and the negative pressure pipeline, so that the suction cup group generates negative pressure to adsorb the box to be opened; the control unit is also used for controlling the positive and negative pressure switch valve group to conduct the suction cup group and the positive pressure pipeline after the box to be opened is opened, and at the same time controlling the vacuum breaking valve group to open, so that the suction cup group generates positive pressure to stop adsorbing the box to be opened.

2. The box opening device according to claim 1, characterized in that: The suction cup group includes a bottom suction cup, a front suction cup and a rear suction cup; The positive and negative pressure switch valve group includes a first positive and negative pressure switch valve, a second positive and negative pressure switch valve and a third positive and negative pressure switch valve; the vacuum breaking valve group includes a first vacuum breaking valve, a second vacuum breaking valve and a third vacuum breaking valve; The first positive and negative pressure switch valve is arranged on the connecting gas path between the bottom suction cup and the positive pressure pipeline and on the connecting gas path between the bottom suction cup and the negative pressure pipeline; the first vacuum breaking valve is arranged on the positive pressure pipeline; The second positive and negative pressure switch valve is arranged on the connecting air path between the front suction cup and the positive pressure pipeline and on the connecting air path between the front suction cup and the negative pressure pipeline; the second vacuum breaking valve is arranged on the positive pressure pipeline; The third positive and negative pressure switch valve is arranged on the connecting air path between the rear suction cup and the positive pressure pipeline and on the connecting air path between the rear suction cup and the negative pressure pipeline; the third vacuum breaking valve is arranged on the positive pressure pipeline; The control unit is used to control the first positive and negative pressure switching valve to connect the bottom suction cup and the negative pressure pipeline, so that the bottom suction cup adsorbs the bottom surface of the box to be opened; it is also used to control the connection of the front suction cup and the negative pressure pipeline as well as the rear suction cup and the negative pressure pipeline when the box to be opened moves to a specific position, so that the front suction cup and the rear suction cup adsorb the side of the box to be opened, thereby opening the box to be opened; it is also used to control the third positive and negative pressure switching valve to connect the rear suction cup and the positive pressure pipeline after the box to be opened is opened, and at the same time control the first vacuum breaking valve to open within a first preset time.

3. The unpacking device according to claim 2, characterized in that: The control unit is also connected to the packing device for communication, and is also used to control the second positive and negative pressure switch valve to connect the front suction cup and the positive pressure pipeline, and control the second vacuum breaking valve to open within a second preset time when the packing device transports the packing materials into the box to be opened for the first time; and is also used to control the first positive and negative pressure switch valve to connect the bottom suction cup and the positive pressure pipeline, and control the first vacuum breaking valve to open within a third preset time after the packing device completes the packing.

4. The box opening device according to claim 2, characterized in that: The first vacuum breaking valve, the second vacuum breaking valve and the third vacuum breaking valve are all two-position two-way solenoid valves; The first end of the first vacuum breaker valve is connected to the bottom suction cup, and the second end is connected to the compressed air source of the positive pressure pipeline; The first end of the second vacuum breaker is connected to the front suction cup, and the second end is connected to the compressed air source of the positive pressure pipeline; The first end of the third vacuum breaking valve is communicated with the rear suction cup, and the second end is communicated with the air pressure source of the positive pressure pipeline.

5. The box opening device according to claim 2, characterized in that: The first positive and negative pressure switch valve, the second positive and negative pressure switch valve and the third positive and negative pressure switch valve are all two-position five-way solenoid valves; The first end of the first positive and negative pressure switch valve is connected to the bottom suction cup, the second end is connected to the positive pressure pipeline, and the third end is connected to the negative pressure pipeline; The first end of the second positive and negative pressure switch valve is connected to the front suction cup, the second end is connected to the positive pressure pipeline, and the third end is connected to the negative pressure pipeline; The first end of the third positive and negative pressure switch valve is communicated with the rear suction cup, the second end is communicated with the positive pressure pipeline, and the third end is communicated with the negative pressure pipeline.

6. The box opening device according to claim 1, characterized in that: Also includes a connecting rod mechanism; The suction cup group is fixedly connected to the connecting rod mechanism; the control unit is communicatively connected to the connecting rod mechanism and is used to control the movement of the connecting rod mechanism to drive the suction cup group to move to a preset position.

7. A control method for a box opening device, characterized in that: Applicable to the unpacking device according to any one of claims 1 to 6; the control method comprises: Control the positive and negative pressure switch valve groups to conduct the suction cup group and the negative pressure pipeline, so that the suction cup group generates negative pressure to adsorb the box to be opened; After the box to be opened is opened, the positive and negative pressure switch valve group is controlled to conduct the suction cup group and the positive pressure pipeline, and the vacuum breaking valve group is controlled to open, so that the suction cup group generates positive pressure to stop adsorbing the box to be opened.

8. The control method according to claim 7, characterized in that: The suction cup group includes a bottom suction cup, a front suction cup and a rear suction cup; the positive and negative pressure switch valve group includes a first positive and negative pressure switch valve, a second positive and negative pressure switch valve and a third positive and negative pressure switch valve; the vacuum breaking valve group includes a first vacuum breaking valve, a second vacuum breaking valve and a third vacuum breaking valve; Control the positive and negative pressure switch valve group to conduct the suction cup group and the negative pressure pipeline, including: Controlling the first positive and negative pressure switch valve to conduct the bottom suction cup and the negative pressure pipeline, so that the bottom suction cup adsorbs the bottom surface of the box to be opened; When the box to be opened moves to a specific position, the front suction cup and the negative pressure pipeline as well as the rear suction cup and the negative pressure pipeline are controlled to be connected, so that the front suction cup and the rear suction cup adsorb the side of the box to be opened, thereby opening the box to be opened; After the box to be opened is opened, the positive and negative pressure switch valve group is controlled to conduct the suction cup group and the positive pressure pipeline, and the vacuum breaking valve group is controlled to open, including: After the box to be opened is opened, the third positive and negative pressure switch valve is controlled to conduct the rear suction cup and the positive pressure pipeline, and the first vacuum breaking valve is controlled to open within a first preset time.

9. The control method according to claim 8, characterized in that: The control unit is also in communication connection with the box packing device; After the box to be opened is opened, the third positive and negative pressure switch valve is controlled to conduct the rear suction cup and the positive pressure pipeline, and the first vacuum breaking valve is controlled to open within a first preset time, and the method further includes: When the packing device transports the packing materials into the box to be opened for the first time, the second positive and negative pressure switch valve is controlled to connect the rear suction cup and the positive pressure pipeline, and the second vacuum breaking valve is controlled to open within a second preset time; After the packing device completes the packing, the first positive and negative pressure switch valve is controlled to conduct the rear suction cup and the positive pressure pipeline, and the first vacuum breaking valve is controlled to open within a third preset time.

10. The control method according to claim 7, characterized in that: The box opening device also includes a connecting rod mechanism; Before controlling the positive and negative pressure switch valve groups to conduct the suction cup group and the negative pressure pipeline so that the suction cup group generates negative pressure to adsorb the box to be opened, the method further includes: The connecting rod mechanism is controlled to move to drive the suction cup assembly to move to a preset position.

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