Automatic bag opening apparatus and method

Abstract

The application discloses an automatic bag opening device and method, which comprises a base frame, a suction assembly, a bag opening device and a first driving device. The suction assembly comprises a first suction subassembly and a second suction subassembly which are arranged on the base frame and can be separated from each other. The first suction subassembly and the second suction subassembly are used for sucking the first side and the second side of the bag opening of a packaging bag respectively, so as to separate the bag opening of the packaging bag. The bag opening device comprises a first clamping mechanism which is used for clamping the second side of the bag opening after the bag opening of the packaging bag is separated. The first driving device is connected with the second clamping mechanism and is used for driving the second clamping mechanism to move away from the first clamping mechanism, so as to expand the bag opening of the packaging bag. In the technical scheme of the application, the first suction subassembly and the second suction subassembly cooperate to slightly open the bag opening, and the first clamping mechanism and the first driving device cooperate to further open the packaging bag, so as to solve the problem that the packaging bag is not easy to open.

Description

TECHNICAL FIELD

[0001] The present application relates to the packaging technical field, in particular to an automatic bag opening device and method. BACKGROUND

[0002] After the product is produced, the product needs to be packaged for the convenience of sales, and the existing packaging form adopts a packaging bag, that is, the product is placed into the packaging bag. The product packaging process is to open the packaging bag mouth to the size of the product, and then place the product into the packaging bag.

[0003] The existing bag opening technology is manual bag opening, and the manual bag opening is divided into two steps. In the first step, the packaging bag mouth is slightly opened by using rubbing, pinching and pulling actions with both hands, so that the two sides of the packaging bag mouth are separated. In the second step, the hand is inserted into the packaging bag, and both hands hold the two sides of the packaging bag, and then the slightly opened bag mouth is pulled open by both hands, so that the bag mouth of the packaging bag is further enlarged, so that the product can enter the packaging bag from the bag mouth, and the purpose of product packaging is achieved.

[0004] After the packaging bag is produced, the two sides thereof are closely attached, and such too closely attached packaging bag is not easy to be rubbed open by both hands, and the staff needs to spend more time and effort to handle, thereby resulting in low bag opening efficiency. SUMMARY

[0005] The main purpose of the present application is to provide an automatic bag opening device and method, which aims to solve the technical problem of low efficiency of the existing manual bag opening.

[0006] To achieve the above-mentioned purpose, the present application provides an automatic bag opening device, which comprises:

[0007] a base frame;

[0008] a suction assembly comprising a first suction subassembly and a second suction subassembly which are arranged on the base frame and can be separated from each other, the first suction subassembly and the second suction subassembly are respectively used for adsorbing the opposite first side and the second side of the bag mouth of the packaging bag to separate the bag mouth of the packaging bag;

[0009] a bag opening device comprising a first clamping mechanism, the first clamping mechanism is used for clamping the second side of the bag mouth after the bag mouth of the packaging bag is separated;

[0010] a first driving device connected with the second clamping mechanism, used for driving the second clamping mechanism to move away from the first clamping mechanism to enlarge the bag mouth of the packaging bag.

[0011] In some embodiments, the first suction subassembly is fixedly arranged at the top end of the base frame, the second suction subassembly extends along the vertical direction of the base frame, and the suction end of the second suction subassembly is opposite to the suction end of the first suction subassembly;

[0012] The second suction member is rotatably arranged on the base frame and faces or is obliquely arranged to the first suction member.

[0013] In some embodiments, the automatic bag opening device further comprises a second driving device arranged on the base frame and connected with the second suction member, for driving the second suction member away from or close to the first suction member.

[0014] In some embodiments, the second driving device comprises:

[0015] a first driving member rotatably arranged on the base frame and having an operating end connected with the second suction member, for driving the second suction member to move vertically close to and away from the first suction member;

[0016] a second driving member arranged on one side of the base frame and having an operating end connected with the first driving member, for driving the first driving member and the second suction member to rotate, so as to avoid the movement of the first clamping mechanism.

[0017] In some embodiments, the automatic bag opening device further comprises a third driving device arranged on one side of the base frame, for driving the bag opening device to move close to or away from the first suction member.

[0018] In some embodiments, the third driving device comprises a third driving member, a base and a slide rail.

[0019] The slide rail is arranged on the side of the base frame where the second suction member is arranged; the base is slidably arranged on the slide rail, and the bag opening device and the first driving device are arranged on the base; the third driving member is connected with the base and the base frame, for driving the base to move close to or away from the base frame.

[0020] In some embodiments, the first clamping mechanism comprises:

[0021] a bottom plate fixedly arranged on the operating end of the first driving device;

[0022] a fourth driving member arranged on the side of the bottom plate away from the first driving device;

[0023] a claw member hingedly connected with the bottom plate, one end of the claw member being rotatably connected with the operating end of the fourth driving member, and the other end of the claw member facing the side of the bottom plate toward the first driving device, for clamping the second side of the bag opening of the packaging bag together with the bottom plate.

[0024] In some embodiments, the bag opening device further comprises a second clamping mechanism, and the second clamping mechanism comprises:

[0025] a lower pressing plate, a free end of the lower pressing plate extending towards the first suction accessory, the third driving member driving the lower pressing plate above the first suction accessory;

[0026] a fifth driving member arranged on the base, a working end of the fifth driving member connected with the lower pressing plate, for driving the lower pressing plate to press the first side of the bag opening of the packaging bag after the bag opening device approaches the first suction accessory.

[0027] In some embodiments, the lower pressing plate is provided with a avoiding slot for embedding the claw member above to avoid the movement of the claw member.

[0028] The present application further provides an automatic bag opening method, comprising the automatic bag opening device as described in the foregoing embodiments.

[0029] putting the bag opening of the packaging bag between the first suction accessory and the second suction accessory;

[0030] controlling the first suction accessory and the second suction accessory to respectively suction the first side and the second side of the bag opening of the packaging bag;

[0031] controlling the first suction accessory and the second suction accessory to move away from each other to separate the bag opening of the packaging bag;

[0032] controlling the bag opening device to approach the bag opening of the packaging bag to make the first clamping mechanism clamp the second side of the bag opening;

[0033] controlling the first clamping mechanism to move away from the first side of the bag opening to further expand the bag opening of the packaging bag.

[0034] In some embodiments, after controlling the bag opening device to approach the bag opening of the packaging bag, the method further comprises:

[0035] controlling the second clamping mechanism to press the first side of the bag opening on the first suction accessory.

[0036] In some embodiments, after controlling the bag opening device to approach the bag opening of the packaging bag to make the first clamping mechanism clamp the second side of the bag opening, the method further comprises:

[0037] controlling the second suction accessory to release the second side of the bag opening and driving the first suction accessory to swing away from the first clamping mechanism.

[0038] The technical scheme of the present application is characterized in that the first suction accessory is arranged on the base frame to suck one side of the packaging bag, the second suction accessory sucks the other side of the packaging bag, when the first suction accessory and the second suction accessory both suck the packaging bag, the second suction accessory moves relative to the first suction accessory, so that the two sides of the packaging bag are away from each other, i.e. the bag opening is opened. The first clamping mechanism clamps the second side of the packaging bag, under the driving of the first driving device, the first clamping mechanism moves the clamped second side of the packaging bag in the vertical direction, so as to expand the bag opening of the packaging bag. Through the suction of the two sides of the packaging bag by the first suction accessory and the second suction accessory, it is not necessary to worry about that the two sides of the packaging bag are too close, and the first clamping mechanism and the first driving device cooperate with each other, so that the bag opening of the packaging bag is further opened, and the problem that the packaging bag is difficult to open is solved. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 FIG. 1 is a structural schematic view of an embodiment of the automatic bag opening equipment of the present application;

[0040] Figure 2 FIG. 2 is a structural schematic view of an embodiment of the bag opening device of the present application;

[0041] Figure 3 FIG. 3 is a structural schematic view of another view of the automatic bag opening equipment of the present application. DETAILED DESCRIPTION

[0042] The scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0043] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0044] It should also be noted that when an element is referred to as being "fixed to" or "arranged on" another element, it can be directly on the other element or can have a middle element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or can have a middle element.

[0045] In addition, the descriptions related to "first", "second" and the like in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0046] The present application provides an automatic bag opening device, referring to Figure 1 and Figure 3 The automatic bag opening device comprises:

[0047] a base frame 1;

[0048] a suction assembly 2 comprising a first suction member 21 and a second suction member 22 which are arranged on the base frame 1 and can be separated from each other, the first suction member 21 and the second suction member 22 are respectively used for adsorbing the first side and the second side of the bag opening of the packaging bag, so as to separate the bag opening of the packaging bag;

[0049] a bag opening device comprising a first clamping mechanism 31, the first clamping mechanism 31 is used for clamping the second side of the bag opening after the bag opening of the packaging bag is separated;

[0050] a first driving device 4 connected with the first clamping mechanism 31, used for driving the first clamping mechanism 31 to move away from the second clamping mechanism to expand the bag opening of the packaging bag.

[0051] In the embodiment, the suction ends of the first suction member 21 and the second suction member 22 are opposite to each other, and are used for adsorbing two sides of the packaging bag. After the first suction member 21 and the second suction member 22 adsorb the two sides of the packaging bag, the first suction member 21 and the second suction member 22 move away from each other to slightly separate the bag opening of the packaging bag. And the first clamping mechanism 31 clamps the second side of the packaging bag after the first suction member 21 and the second suction member 22 open the bag opening of the packaging bag, and the first driving device 4 drives the first clamping mechanism 31 to move in the vertical direction. Since the first clamping mechanism 31 clamps the second side of the packaging bag, the second side of the packaging bag will also move with the first clamping mechanism 31.

[0052] Wherein, since the suction force of the first suction member 21 and the second suction member 22 is limited, the bag opening of the packaging bag cannot be further opened. If the first suction member 21 and the second suction member 22 are forced to move further away from each other to open the bag opening of the packaging bag, the packaging bag will fall due to insufficient suction force. If the suction force of the first suction member 21 and the second suction member 22 is sufficient to resist the pulling of the second suction member 22 on both sides of the packaging bag, the first clamping mechanism 31 does not need to further open the bag opening of the packaging bag, and the second suction member 22 can continue to move away from the first suction member 21 until the bag opening of the packaging bag is completely opened. However, to make the suction force of the first suction member 21 and the second suction member 22 reach the above-mentioned level, the volume of the required vacuum generator will be large, which will affect the installation location of the entire device. Secondly, when the suction force is too large, it will cause damage to the packaging bag.

[0053] Optionally, the suction force of the first suction member 21 is strengthened until the first clamping mechanism 31 clamps the second side of the packaging bag to drive the second side of the packaging bag to rise, and the first side of the packaging bag does not escape from the suction force of the first suction member 21.

[0054] Optionally, a fixing member is provided, and when the second suction member 22 is raised and slightly opens both sides of the packaging bag, the fixing member fixes the first side of the packaging bag on the first suction member 21.

[0055] Optionally, a plurality of suction holes are provided on the first suction member 21 and the second suction member 22.

[0056] In some embodiments, Figure 1 and Figure 3 , the first suction member 21 is fixedly arranged at the top end of the base frame 1, and the second suction member 22 extends along the vertical direction of the base frame 1, and the suction end of the second suction member 22 is opposite to the suction end of the first suction member 21;

[0057] The second suction member 22 is rotationally arranged on the base frame 1, and is opposite or obliquely opposite to the first suction member 21.

[0058] In the embodiment, the base frame 1 is divided into a lower half base 11 and an upper half support frame 12, and the base 11 is vertically arranged with the support frame 12. The base 11 is used to fix the support frame 12, the first suction member 21 is fixedly arranged at the top end of the support frame 12 and used to suck the first side of the packaging bag, and the second suction member 22 is rotationally arranged on the support frame 12, and the rotation shaft of the second suction member 22 is arranged at the middle part of the support frame 12 and swings relative to the first clamping mechanism 31. Reference Figures 1 to 3, the second suction accessory 22 is in a rotating state, the first suction accessory 21 is arranged on one side of the top end of the support frame 12 towards the bag opening direction of the packaging bag, the second suction accessory 22 is opposite to the first suction accessory 21, directly above the first suction accessory 21, and the suction end of the first suction accessory 21 is opposite to the suction end of the second suction accessory 22. When the second suction accessory 22 is arranged obliquely above the first suction accessory 21, the second suction accessory 22 rotates towards the bag opening device, and the suction end of the second suction accessory 22 is arranged at an angle with the suction end of the first suction accessory 21.

[0059] Optionally, the first suction accessory 21 and the second suction accessory 22 are arranged in a staggered manner.

[0060] In some embodiments, Figure 1 and Figure 3 The automatic bag opening device further comprises a second driving device 5 arranged on the base frame 1 and connected with the second suction accessory 22, for driving the second suction accessory 22 away from or close to the first suction accessory 21.

[0061] In the embodiment, the second driving device 5 is arranged on the base frame 1 and used for driving the second suction accessory 22 away from or close to the first suction accessory 21. In the process of opening the packaging bag, the first step is to adsorb two surfaces of the packaging bag by the first suction accessory 21 and the second suction accessory 22, and the second suction accessory 22 is driven away from the first suction accessory 21 by the second driving device 5 to preliminarily open the bag opening of the packaging bag. The second step is that the first clamping mechanism 31 clamps the packaging bag on the second suction accessory 22. Since the packaging bag is adsorbed by the second suction accessory 22, if the first clamping mechanism 31 clamps the packaging bag and moves in the vertical direction, the second suction accessory 22 will block the movement of the first clamping mechanism 31. Therefore, the second suction accessory 22 needs to avoid the movement of the first clamping mechanism 31, and the third step is that the second driving device 5 drives the second suction accessory 22 to avoid the first clamping mechanism 31, so that the first driving device 4 drives the first clamping mechanism 31 to move in the vertical direction to further open the bag opening of the packaging bag.

[0062] In some embodiments, Figure 1 and Figure 3 The second driving device 5 comprises:

[0063] The first driving member 51 is rotatably arranged on the base frame 1, the execution end of which is connected with the second suction accessory 22, for driving the second suction accessory 22 to move close to and away from the first suction accessory 21 in the vertical direction;

[0064] The second driving member 52 is arranged on one side of the base frame 1, the working end of which is connected with the first driving member 51, and the second driving member 52 is used for driving the first driving member 51 and the second suction accessory 22 to rotate to avoid the movement of the first clamping mechanism 31.

[0065] In the embodiment, the second driving device 5 comprises a first driving member 51 and a second driving member 52, and the first driving member 51 is arranged on the support frame 12. The first driving member 51 is rotatably arranged on the base frame 1, and the support frame 12 is provided with a load plate in the middle, and the load plate is provided with a rotating shaft, and the first driving member 51 is fixedly arranged on the rotating shaft, and the second driving member 52 drives the rotating shaft to drive the first driving member 51 and the second suction member 22 to rotate.

[0066] In some embodiments, Figure 1 and Figure 3 The automatic bag opening device further comprises a third driving device 6 arranged on one side of the base frame 1, which is used to drive the bag opening device to move close to or away from the first suction member 21.

[0067] In the embodiment, the third driving device 6 is used to drive the first clamping mechanism 31 and the second clamping mechanism to move close to or away from the base frame 1.

[0068] During the opening of the packaging bag, the first clamping mechanism 31 and the second clamping mechanism avoid the movement of the second suction member 22, and the third driving device 6 drives the first clamping mechanism 31 and the second clamping mechanism to move away from the base frame 1. After the cooperation of the first suction member 21 and the second suction member 22 opens the bag opening, the first clamping mechanism 31 and the second clamping mechanism need to be inserted into the bag opening of the packaging bag, and the third driving device 6 drives the first clamping mechanism 31 and the second clamping mechanism to move close to the base frame 1, so as to push the clamping opening of the first clamping mechanism 31 and the second clamping mechanism into the opened bag opening.

[0069] In some embodiments, Figure 1 and Figure 3 The third driving device 6 comprises a third driving member 61, a base 62 and a sliding rail 63.

[0070] The sliding rail 63 is arranged on one side of the base frame 1 provided with the second suction member 22; the base 62 is slidably arranged on the sliding rail 63, and the base 62 is provided with the bag opening device and the first driving device 4; the third driving member 61 is connected with the base 62 and the base frame 1, and is used to drive the base 62 to move close to or away from the base frame 1.

[0071] In the embodiment, the third driving device 6 comprises a third driving member 61, a base 62 and a sliding rail 63, and the base 62 and the sliding rail 63 are arranged together. The sliding rail 63 is fixedly arranged on one side of the base 11, and the base 62 is slidably arranged on the sliding rail 63. The driving end of the third driving member 61 is connected with the base 62, so as to drive the base 62 to move along the sliding rail 63.

[0072] The third driving member 61 drives the base 62 to move along the slide rail 63, and the first clamping mechanism 31 and the second clamping mechanism on the base 62 also move along the slide rail 63, so that the first clamping mechanism 31 and the second clamping mechanism enter the bag opening of the packaging bag.

[0073] The base 62 has the following functions. Firstly, the base 62 bears the first driving device 4, the first clamping mechanism 31 and the second clamping mechanism. Secondly, the base 62 adjusts the height of the first clamping mechanism 31 and the second clamping mechanism relative to the first suction member 21 and the second suction member 22, so that the first clamping mechanism 31 and the second clamping mechanism are located between the first suction member 21 and the second suction member 22.

[0074] In some embodiments, Figures 1 to 3 The first clamping mechanism 31 comprises:

[0075] The bottom plate 311 is fixedly arranged on the working end of the first driving device 4;

[0076] The fourth driving member 312 is arranged on the side of the bottom plate 311 away from the first driving device 4;

[0077] The claw member 313 is hingedly connected to the bottom plate 311, one end of the claw member 313 is rotationally connected to the working end of the fourth driving member 312, and the other end of the claw member 313 is opposite to the side of the bottom plate 311 facing the first driving device 4, and is used for clamping the second side of the bag opening of the packaging bag together with the bottom plate 311.

[0078] In the embodiment, one side of the bottom plate 311 is arranged on the working end of the first driving device 4, and the other side of the bottom plate 311 is provided with the claw member 313 and the fourth driving member 312. The middle part of the claw member 313 is hingedly connected to the bottom plate 311, and the fourth driving member 312 and one end of the claw member 313 are connected to drive the claw member 313 to rotate, so that the other end of the claw member 313 forms a clamping opening 3131 together with the bottom plate 311.

[0079] The bottom plate 311 can be provided with a through hole for the claw member 313 to pass through the bottom plate 311, and the middle part of the claw member 313 is hingedly connected to the two side walls of the through hole. Alternatively, the claw member 313 can be arranged on one side of the bottom plate 311 and connected to the bottom plate 311 by hinging. Regardless of the connection mode, the claw member 313 can rotate relative to the bottom plate 311 to form a clamping opening 3131 with the end of the claw member 313 and the bottom plate 311 facing the second suction member 22.

[0080] In some embodiments, Figures 1 to 3 The bag opening device further comprises a second clamping mechanism, and the second clamping mechanism comprises:

[0081] The lower pressing plate 321 extends from the free end of the lower pressing plate 321 to the first suction member 21, and the third driving member 61 drives the lower pressing plate 321 to above the first suction member 21;

[0082] The fifth driving component 322 is mounted on the base 62, and its working end is connected to the lower pressure plate 321. It is used to drive the lower pressure plate 321 to cooperate with the first adsorption component 21 to press the first side of the bag opening after the bag opening device approaches the first adsorption component 21.

[0083] In this embodiment, one end of the lower pressure plate 321 is disposed on the working end of the fifth driving member 322, and the other end extends towards the bag opening of the packaging bag to the first adsorption member 21. The lower pressure plate 321 is directly opposite the adsorption port of the first adsorption member 21. When the bag opening of the packaging bag is slightly opened under the action of the first adsorption member 21 and the second adsorption member 22, the lower pressure plate 321 approaches the first adsorption member 21, and the fifth driving member 322 drives the lower pressure plate 321 to descend, thereby pressing down the packaging bag adsorbed on the first adsorption member 21.

[0084] Among them, reference Figure 3 The fifth driving member 322 drives the lower pressure plate 321 to move in the vertical direction. When the first clamping mechanism 31 and the second clamping mechanism are away from the base frame 1, the first clamping mechanism is higher than the first adsorption member 21, and the first clamping mechanism 31 and the first adsorption member 21 are spaced apart in the vertical direction. When the second clamping mechanism is close to the base frame 1, the lower pressure plate 321 will be located directly above the first adsorption member 21. Under the drive of the fifth driving member 322, the lower pressure plate 321 fits against the first adsorption member 21 to clamp the first side of the packaging bag.

[0085] In some embodiments, Figure 1 and Figure 3 The lower pressure plate 321 is provided with a relief groove 3211 for the upper claw 313 to be inserted into, so as to avoid the movement of the claw 313.

[0086] In this embodiment, the lower pressure plate 321 is provided with a relief groove 3211 at the corresponding position of the claw 313, and the relief groove 3211 is used to avoid the movement of the claw 313.

[0087] refer to Figure 3, the first clamping mechanism 31 and the second clamping mechanism are close to the base frame 1, when the first clamping mechanism 31 and the second clamping mechanism are inserted into the bag opening of the packaging bag, the first clamping mechanism 31 needs to be ensured to be lower than the second suction accessory 22 and higher than the height of the second clamping mechanism and the first suction accessory 21, so that the second side of the packaging bag can be clamped; the second clamping mechanism is higher than the first suction accessory 21 and lower than the second suction accessory 22 and the first clamping mechanism 31, so that the first side of the packaging bag can be clamped. Wherein, the opening of the packaging bag opened by the first suction accessory 21 and the second suction accessory 22 is limited, so the space between the first suction accessory 21 and the second suction accessory 22 is relatively narrow, and the first clamping mechanism 31 and the second clamping mechanism need to be inserted into the bag opening of the packaging bag in the narrow space between the first suction accessory 21 and the second suction accessory 22, in order to avoid the lower pressing plate 321 and the claw piece 313 from colliding and being damaged due to the narrow space when cooperating. Therefore, the lower pressing plate 321 is provided with a avoiding groove 3211, so that the claw piece 313 can freely move relative to the lower pressing plate 321 under the action of the fourth driving piece 312.

[0088] The application further provides an automatic bag opening method, please refer to Figures 1 to 3 , comprising the following steps:

[0089] Placing the bag opening of the packaging bag between the first suction accessory 21 and the second suction accessory 22;

[0090] Controlling the first suction accessory 21 and the second suction accessory 22 to respectively adsorb the opposite first side and the second side of the bag opening of the packaging bag;

[0091] Controlling the first suction accessory 21 and the second suction accessory 22 to move away from each other to separate the bag opening of the packaging bag;

[0092] Controlling the bag opening device to be close to the bag opening of the packaging bag, so that the first clamping mechanism 31 clamps the second side of the bag opening;

[0093] Controlling the first clamping mechanism 31 to move away from the first side of the bag opening, so as to further expand the bag opening of the packaging bag.

[0094] In this embodiment, the whole bag opening process can be divided into two processes:

[0095] Process one, the first suction accessory 21 and the second suction accessory 22 adsorb the two sides of the packaging bag to slightly separate the two sides of the packaging bag.

[0096] Process two, the first clamping mechanism 31 clamps the second side of the packaging bag to rise under the driving of the first driving device 4, so as to further expand the bag opening of the packaging bag.

[0097] Further explain process one and process two;

[0098] Process one: the packaging bag approaches (to the right) the base frame 1, the bag opening of the packaging bag is aligned between the first suction accessory 21 and the second suction accessory 22, the first driving member 51 drives the second suction accessory 22 to descend, approaches the first suction accessory 21, until the suction ends of the first suction accessory 21 and the second suction accessory 22 both contact the packaging bag, the vacuum generator starts to work, the suction ends of the first suction accessory 21 and the second suction accessory 22 start to suck the two sides of the packaging bag; the first driving member 51 drives the second suction accessory 22 to ascend again, so that the second suction accessory 22 sucks the second side of the packaging bag away from the first side sucked by the first suction accessory 21.

[0099] Process two: at this time, the third driving device 6 drives the bag opening device to approach (to the left) the base frame 1, the first clamping mechanism 31 extends into the packaging bag with the opened bag opening, wherein the bottom plate 311 is located on the outer surface of the second side of the packaging bag, the claw member 313 faces the inner surface of the second side of the packaging bag, and the claw member 313 rotates relative to the bottom plate 311 to press and hold the second side of the packaging bag on the bottom plate 311. Then the first driving mechanism drives the first clamping mechanism 31 to move away from the first side of the packaging bag, thereby further opening the bag opening of the packaging bag.

[0100] In some embodiments, Figure 1 and Figure 3 after the bag opening device is controlled to approach the bag opening of the packaging bag;

[0101] Further comprising controlling the second clamping mechanism to press the first side of the bag opening on the first suction accessory 21.

[0102] In the embodiment, after the bag opening device is controlled to approach the bag opening of the packaging bag, further comprising a second clamping mechanism, the second clamping mechanism is used to press the first side of the bag opening on the first suction accessory 21.

[0103] When the suction force of the first suction accessory 21 is too strong, the first side of the bag opening of the packaging bag can be sucked on the first suction accessory 21, and only the second side of the bag opening of the packaging bag needs to be clamped by the first clamping mechanism 31 and lifted under the driving of the first driving device 4.

[0104] The purpose of setting the second clamping mechanism is to further fix the first side of the bag opening of the packaging bag to prevent the first side of the bag opening from being separated from the first suction accessory 21 during the lifting of the first clamping mechanism 31.

[0105] In some embodiments, Figure 1 and Figure 3 after the bag opening device is controlled to approach the bag opening of the packaging bag, the first clamping mechanism 31 clamps the second side of the bag opening;

[0106] Further comprising controlling the second suction accessory 22 to release the second side of the bag opening, and driving the second suction accessory 22 to swing away from the first clamping mechanism 31.

[0107] In the present embodiment, the second suction member 22 has two states under the driving of the second driving device 5.

[0108] State one, refer to Figure 3 , the two sides of the packaging bag are initially in a state of being attached together, and the second suction member 22 needs to cooperate with the first suction member 21 to open the bag opening of the packaging bag. Therefore, the suction end of the second suction member 22 and the suction end of the first suction member 21 are located in the same vertical plane.

[0109] State two, refer to Figure 3 , the first clamping mechanism 31 clamps the second side of the packaging bag, and when the first clamping mechanism 31 is driven by the first driving device 4 to stretch upward in the vertical direction, the second suction member 22 rotates to the right to avoid the first clamping mechanism 31 rising.

[0110] At this time, since the second suction member 22 is in state one, the second suction member 22 is fixedly arranged on the base frame 1, and the suction end of the second suction member 22 is also on the outer surface of the second side of the packaging bag. If the first driving device 4 drives the first clamping mechanism 31 when the second suction member 22 is in state one, the first clamping mechanism 31 will be pulled by the second suction member 22 when the first clamping mechanism 31 clamps the packaging bag and rises, thereby causing the packaging bag to be broken.

[0111] The above only describes some or preferred embodiments of the present application, and neither the text nor the drawings can limit the scope of protection of the present application. Any equivalent structural transformation based on the content of the present application and the drawings, or direct / indirect application in other related technical fields is included in the scope of protection of the present application.

Claims

1. An automatic bag opening apparatus characterized by, The automatic bag opening device comprises: a base frame; a suction assembly comprising a first suction member and a second suction member which are arranged on the base frame and can be separated from each other, the first suction member and the second suction member are used to suck the first side and the second side of the bag opening of the packaging bag respectively to separate the bag opening of the packaging bag; an opening device comprising a first clamping mechanism, the first clamping mechanism is used to clamp the second side of the bag opening after the bag opening of the packaging bag is separated; a first driving device connected with the first clamping mechanism, the first driving device is used to drive the first clamping mechanism to move away from the second clamping mechanism to expand the bag opening of the packaging bag; a second driving device arranged on the base frame and connected with the second suction member, the second driving device is used to drive the second suction member to move away from or close to the first suction member; the second driving device comprises: a first driving member rotatably arranged on the base frame, the working end of the first driving member is connected with the second suction member, the first driving member is used to drive the second suction member to move close to or away from the first suction member in the vertical direction; a second driving member arranged on one side of the base frame, the working end of the second driving member is connected with the first driving member, the second driving member is used to drive the first driving member and the second suction member to rotate to avoid the movement of the first clamping mechanism.

2. The automatic bag opening apparatus of claim 1, wherein the first suction member is fixedly arranged at the top end of the base frame, the second suction member extends in the vertical direction of the base frame, and the suction end of the second suction member is opposite to the suction end of the first suction member; the second suction member is rotatably arranged on the base frame and is opposite or oblique to the first suction member.

3. The automatic bag opening apparatus of claim 1, wherein, a third driving device arranged on one side of the base frame, the third driving device is used to drive the opening device to move close to or away from the first suction member.

4. The automatic bag opening apparatus of claim 3, wherein the third driving device comprises a third driving member, a base and a slide rail; the slide rail is arranged on the side of the base frame provided with the second suction member; the base is slidably arranged on the slide rail, the opening device and the first driving device are arranged on the base, and the third driving member is connected with the base and the base frame and is used to drive the base to move close to or away from the base frame.

5. The automatic bag opening apparatus of claim 4, wherein, the first clamping mechanism comprises: a bottom plate fixedly arranged on the working end of the first driving device; a fourth driving member arranged on the side of the bottom plate away from the first driving device; a claw member hingedly connected with the bottom plate, one end of the claw member is rotatably connected with the working end of the fourth driving member, and the other end of the claw member is opposite to the side of the bottom plate facing the first driving device, the claw member is used to clamp the second side of the bag opening of the packaging bag together with the bottom plate.

6. The automatic bag opening apparatus of claim 5, wherein, the second clamping mechanism comprises: a pressing plate, the free end of the pressing plate extends towards the first suction member, and the third driving member drives the pressing plate to above the first suction member; a fifth driving member arranged on the base, the working end of the fifth driving member is connected with the pressing plate, and the fifth driving member is used to drive the pressing plate to press the first side of the bag opening of the packaging bag together with the first suction member after the opening device moves close to the first suction member.

7. The automatic bag opening apparatus of claim 6, wherein the pressing plate is provided with a avoiding slot for the claw member above to embed to avoid the movement of the claw member.

8. An automatic bag opening method characterized by, The automatic bag opening device is used to perform the following steps: putting the bag opening of the packaging bag between the first suction member and the second suction member; controlling the first suction member and the second suction member to respectively suck the first side and the second side of the bag opening of the packaging bag; controlling the first suction member and the second suction member to move away from each other to separate the bag opening of the packaging bag; controlling the bag opening device to move close to the bag opening of the packaging bag, and controlling the first clamping mechanism to clamp the second side of the bag opening; controlling the second clamping mechanism to move away from the first side of the bag opening to further expand the bag opening of the packaging bag.

9. The automatic bag opening method according to claim 8, characterized in that, After controlling the bag opening device to move close to the bag opening of the packaging bag, the method further comprises: controlling the second clamping mechanism to press the first side of the bag opening against the first suction member.

10. The automatic bag opening method according to claim 8 or 9, characterized in that, After controlling the bag opening device to move close to the bag opening of the packaging bag, the method further comprises: controlling the second suction member to release the second side of the bag opening, and driving the second suction member to swing away from the first clamping mechanism.

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