Methods and devices for cleaning the corners of material bags

Abstract

This invention discloses a method and apparatus for smoothing the corners of a plastic bag. According to the method, a first plate is first driven to move along the first adjacent surface of the bag from a first initial position to a first edge position to smooth the first adjacent surface. Then, a second plate is driven to move along the second adjacent surface of the bag from a second initial position to a second edge position to smooth the second adjacent surface. Next, the first plate is driven to move along the second adjacent surface to fold the corner to the second adjacent surface. Then, a winding assembly is driven to seal the second adjacent surface of the bag along the extension direction of the corner, so that the corner is tightly attached to the second adjacent surface. By processing each corner of the bag using the above method, each corner can be made to fit snugly against the surface of the bag, thereby reducing the impact of the corners on the overall wrapping and packaging of the bag, and improving the surface flatness of the wrapped bag.

Description

Technical Field

[0001] This invention relates to the field of bag packaging technology, and in particular to a method and apparatus for straightening the corners of bags. Background Technology

[0002] During the manufacturing process, products need to be packaged using plastic bags to facilitate subsequent storage or transportation. In related technologies, after packaging products with plastic bags, protruding corners appear around the edges of the bags.

[0003] Traditional techniques involve using a roll-up device to forcibly roll the adhesive onto the uneven material bag. This unevenness and protruding edges of the bag can affect the subsequent wrapping and packaging, resulting in a poor surface smoothness of the wrapped bag. Summary of the Invention

[0004] The purpose of this invention is to at least solve one of the technical problems existing in the prior art. A first aspect of this invention provides a method for straightening the corners of a plastic bag, which improves the surface smoothness of the bag after wrapping. A second aspect of this invention also provides a plastic bag straightening device capable of implementing the method for straightening the corners of the plastic bag according to the first aspect of this invention.

[0005] According to a first aspect embodiment of the present invention, a method for straightening the corners of a material bag is provided, wherein the corners are formed on the peripheral corners of the material bag, and two surfaces of the material bag adjacent to any corner are respectively designated as a first adjacent surface and a second adjacent surface. The method for straightening the corners includes the following steps:

[0006] The first plate is driven to move from the first initial position to the first edge position along the first adjacent surface of the material bag to smooth the first adjacent surface of the material bag. The first edge position is the edge of the first adjacent surface near the second adjacent surface of the material bag.

[0007] The second plate is driven to move from the second initial position to the second edge position along the second adjacent surface of the material bag to smooth the second adjacent surface of the material bag. The second edge position is the edge of the second adjacent surface near the first adjacent surface.

[0008] Drive the first plate to move along the second adjacent surface to fold the corner of the bag to the second adjacent surface;

[0009] The drive adhesive wrapping mechanism seals the second adjacent surface of the bag along the extension direction of the bag corner, so that the bag corner is tightly attached to the second adjacent surface of the bag;

[0010] Fold each corner of the bag to the surface of the bag using the method described above.

[0011] The bag corner straightening method of the present invention has at least the following beneficial effects: First, drive the first plate to move along the first adjacent surface of the bag from the first initial position to the first edge position to smooth the first adjacent surface of the bag; then drive the second plate to move along the second adjacent surface of the bag from the second initial position to the second edge position to smooth the second adjacent surface of the bag; then drive the first plate to move along the second adjacent surface to fold the bag corner to the second adjacent surface; then drive the winding assembly to seal the second adjacent surface of the bag along the extension direction of the bag corner so that the bag corner is tightly attached to the second adjacent surface of the bag. Furthermore, since the first and second plates respectively smooth out the first and second adjacent surfaces of the bag, wrinkles on the first and second adjacent surfaces can be reduced. The first plate folds and attaches the bag corner between the first and second adjacent surfaces to the second adjacent surface, so that the bag corner can be sealed together with the second adjacent surface. By treating each bag corner of the bag in the above way, each bag corner of the bag can be attached to the surface of the bag, thereby reducing the impact of the bag corner on the overall wrapping of the bag and improving the surface flatness of the bag after wrapping.

[0012] According to the first aspect of the present invention, the method for tidying the corners of a material bag, which involves driving a second plate to move along the second adjacent surface of the material bag from a second initial position to a second edge position, includes the following steps:

[0013] The second plate is driven to move from the second initial position to the second edge position along the second adjacent surface of the material bag to initially smooth the second adjacent surface;

[0014] The second plate is driven to move from the second edge position along the surface of the first plate to press the bag corner against the surface of the first plate and to smooth the first side of the bag corner;

[0015] Drive the second board back to the second initial position;

[0016] The second plate is driven to move again from the second initial position to the second edge position along the second adjacent surface of the material bag to perform a second smoothing of the second adjacent surface.

[0017] The method for straightening the corners of a material bag according to the first aspect embodiment of the present invention further includes the following steps before driving the first plate to move along the second adjacent surface:

[0018] The first plate is driven to move from the first edge along the surface of the second plate to press the bag corner against the surface of the second plate and to smooth the second side of the bag corner.

[0019] Drive the first board to move to the first edge position.

[0020] According to the first aspect of the present invention, the method for straightening the corners of a material bag, driving the first plate to move along the second adjacent surface, includes the following steps:

[0021] Drive the second board to reset to the second initial position;

[0022] The first plate is driven to move a preset distance from the first edge position in a direction away from the first initial position, wherein the preset distance is the thickness of the bag corner;

[0023] Drive the first plate to move along the second adjacent surface to fold the pocket corner to the second adjacent surface.

[0024] According to a second aspect embodiment of the present invention, a bag sorting device includes a corner folding mechanism and a glue wrapping mechanism. The corner folding mechanism includes a driving component and a corner folding plate assembly. The corner folding plate assembly includes a first plate and a second plate. The driving component is connected to the first plate and the second plate respectively. The driving component can drive the first plate to move along a first direction to smooth the first adjacent surface of the bag. The first direction is parallel to the first adjacent surface. The driving component can drive the second plate to move along a second direction to smooth the second adjacent surface of the bag. The second direction is parallel to the second adjacent surface. The driving component can drive the first plate to move along the second direction to press the bag corner between the first and second adjacent surfaces onto the second adjacent surface. The glue wrapping mechanism is disposed on one side of the corner folding mechanism and can seal the second adjacent surface of the bag with glue.

[0025] According to an embodiment of the present invention, the bag sorting device includes a corner folding mechanism comprising two sets of corner folding plates. The two sets of corner folding plates are distributed along a first direction. The first plate and the second plate of the two sets of corner folding plates are both connected to a driving assembly. The two sets of corner folding plates are respectively used to sort two bag corners distributed along the first direction on the bag, so that the two bag corners can be folded to fit their corresponding second adjacent surfaces.

[0026] According to the embodiment of the present invention, the material bag sorting device includes a driving component comprising a first driving structure and two second driving structures. The first driving structure is connected to two first plates respectively through a linkage structure. Under the drive of the first driving structure, the two first plates can simultaneously move closer or further away from each other along a first direction. The two second driving structures are respectively connected to two second plates, and the second driving structures can drive the second plates to move along a second direction.

[0027] According to an embodiment of the present invention, the bag sorting device includes a linkage structure comprising an annular transmission belt, the transmission belt comprising a first transmission segment and a second transmission segment extending along a first direction, wherein the transmission directions of the first transmission segment and the second transmission segment are opposite, two first plates are respectively connected to the first transmission segment and the second transmission segment, and a first driving structure is connected to the transmission belt and is used to drive the transmission belt to work.

[0028] According to an embodiment of the present invention, the bag sorting device has two sets of folding mechanisms, which are distributed along a second direction.

[0029] The bag sorting device according to an embodiment of the present invention further includes a conveyor belt, which extends along a second direction and passes through a wrapping mechanism and a cornering mechanism. The conveyor belt is used to transport the bag to the wrapping mechanism or the cornering mechanism.

[0030] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0032] Figure 1 This is a flowchart of a method for tidying the corners of a material bag according to an embodiment of the present invention;

[0033] Figure 2 This is a flowchart illustrating how a second plate is driven to move from a second initial position to a third edge position along a second adjacent surface of a material bag, according to one embodiment of the present invention.

[0034] Figure 3 This is a flowchart illustrating the process of driving a first plate to move along a second adjacent surface according to an embodiment of the present invention.

[0035] Figure 4 This is a schematic diagram of the structure of a bag sorting device according to an embodiment of the present invention;

[0036] Figure 5 for Figure 4 A partial structural schematic diagram of the bag sorting device shown.

[0037] Figure 6 for Figure 4 A schematic diagram of the angle-folding mechanism of the bag sorting device shown;

[0038] Figure 7 This is a schematic diagram of the structure of a winding assembly according to an embodiment of the present invention;

[0039] Figure 8 This is a schematic diagram of the structure of a material bag according to an embodiment of the present invention;

[0040] Figure 9 This is a schematic diagram of the dynamic structure of the first plate smoothing the first adjacent surface according to an embodiment of the present invention;

[0041] Figure 10 This is a schematic diagram of the dynamic structure of the second plate pressing the corner of the bag onto the surface of the first plate according to an embodiment of the present invention;

[0042] Figure 11 This is a schematic diagram of the dynamic structure of a first plate pressing a bag corner onto the surface of a second plate according to an embodiment of the present invention;

[0043] Figure 12 This is a schematic diagram of the dynamic structure of the first plate folding the corner of the bag to the second adjacent surface according to an embodiment of the present invention;

[0044] Figure 13 This is a schematic diagram of the structure of a material bag after the corner of the bag is folded to the side of the material bag according to an embodiment of the present invention.

[0045] Figure label:

[0046] Frame 100; Conveyor belt 110;

[0047] Angle bending mechanism 200; drive assembly 210; first drive structure 211; second drive structure 212; first plate 220; second plate 230; transmission belt 240; first transmission section 241; second transmission section 242;

[0048] Glue wrapping mechanism 300; winding assembly 310; sealing roller 311; storage roller 312; cutter 313;

[0049] Material bag 400; first adjacent surface 410; second adjacent surface 420; bag corner 430. Detailed Implementation

[0050] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0051] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0052] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0053] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0054] The following is for reference. Figures 1 to 13 The method and apparatus for straightening the corners of the material bags of the present invention will be described in detail.

[0055] refer to Figure 8 Bag corners 430 are formed between two adjacent sidewalls around the bag 400. The front and rear sides of the bag 400 are both designated as first adjacent surfaces 410, and the left and right sides of the bag 400 are both designated as second adjacent surfaces 420. Each bag corner 430 is located at the junction of the adjacent first adjacent surface 410 and second adjacent surface 420. The first initial position can be the middle position of the first adjacent surface 410, and the first edge position can be the edge of the first adjacent surface 410 near the second adjacent surface 420. The second initial position can be the middle position of the second adjacent surface 420, and the second edge position can be the edge of the second adjacent surface 420 near the first adjacent surface 410. Among the bag corners 430 between the first adjacent surface 410 and the second adjacent surface 420, the side of the bag corner 430 near the first adjacent surface 410 is the second side, and the side of the bag corner 430 near the second adjacent surface 420 is the first side.

[0056] Reference Figure 1 The method for straightening the corners of a material bag according to an embodiment of the present invention includes, but is not limited to, the following steps:

[0057] Step S100: Drive the first plate 220 to move from the first initial position to the first edge position along the first adjacent surface 410 of the material bag 400 to smooth the first adjacent surface 410 of the material bag 400. The first edge position is the edge of the first adjacent surface 410 near the second adjacent surface 420 of the material bag 400.

[0058] Step S200: Drive the second plate 230 to move from the second initial position to the second edge position along the second adjacent surface 420 of the material bag 400 to smooth the second adjacent surface 420 of the material bag 400. The second edge position is the edge of the second adjacent surface 420 near the first adjacent surface 410.

[0059] Step S500: Drive the second plate 230 away from the pocket corner 430, and drive the first plate 220 to move along the second adjacent surface 420 to fold the pocket corner 430 to the second adjacent surface 420;

[0060] Step S600: Drive the adhesive wrapping mechanism 300 to seal the second adjacent surface 420 of the bag 400 along the extending direction of the bag corner 430, so that the bag corner 430 is tightly attached to the second adjacent surface 420 of the bag 400.

[0061] Step S700: Fold each corner 430 of the bag 400 to the surface of the bag 400 according to the above method.

[0062] refer to Figure 9 and Figure 10It is understandable that by driving the first plate 220 to move from the first initial position to the first edge position along the first adjacent surface 410 of the bag 400, the first plate 220 can smooth the first adjacent surface 410 during the movement to reduce wrinkles on the first adjacent surface 410. By driving the second plate 230 to move from the second initial position to the second edge position along the second adjacent surface 420 of the bag 400, the second plate 230 can smooth the second adjacent surface 420 during the movement to reduce wrinkles on the second adjacent surface 420. By driving the first plate 220 to move along the second adjacent surface 420, the bag corner 430 can be folded onto the second adjacent surface 420. After the winding assembly 310 seals the second adjacent surface 420 along the extension direction of the bag corner 430, the bag corner 430 can adhere to the second adjacent surface 420. By folding the corners 430 of the bag 400 to the surface of the bag 400 using the bag corner straightening method of the present invention, the influence of the corners 430 on the packaging and wrapping of the bag 400 can be reduced, thereby improving the surface flatness of the bag 400 after wrapping and packaging.

[0063] In some embodiments of the present invention, reference is made to Figure 2 Step S200 includes, but is not limited to, the following steps:

[0064] Step S210: Drive the second plate 230 to move from the second initial position to the second edge position along the second adjacent surface 420 of the material bag 400 to initially smooth the second adjacent surface 420;

[0065] Step S220: Drive the second plate 230 to move from the second edge position along the surface of the first plate 220 to press the bag corner 430 onto the surface of the first plate 220 and smooth the first side of the bag corner 430.

[0066] refer to Figure 10 It is understood that by driving the second plate 230 to move from the second edge along the surface of the first plate 220 to press the pocket corner 430 onto the surface of the first plate 220, the second plate 230 can use the surface of the first plate 220 as a reference to smooth the first side of the pocket corner 430 to reduce wrinkles on the first side of the pocket corner 430, the first side being the side of the pocket corner 430 near the second adjacent surface 420.

[0067] Step S230: Drive the second board 230 back to the second initial position;

[0068] Step S240: Drive the second plate 230 to move again from the second initial position to the second edge position along the second adjacent surface 420 of the material bag 400, so as to smooth the second adjacent surface 420 a second time.

[0069] Understandably, by driving the second plate 230 to move again from the second initial position to the second edge position along the second adjacent surface 420 of the material bag 400, the second plate 230 can smooth the second adjacent surface 420 a second time during the movement, so as to further reduce the wrinkles on the second adjacent surface 420.

[0070] In some embodiments of the present invention, reference is made to Figure 1 Before step S500, the following steps are also included:

[0071] Step S300: Drive the first plate 220 to move from the first edge along the surface of the second plate 230 to press the bag corner 430 onto the surface of the second plate 230 and smooth the second side of the bag corner 430.

[0072] Step S400: Drive the first board 220 to move to the first edge position.

[0073] refer to Figure 11 It is understandable that during the process of the first plate 220 moving from the first initial position to the first edge position, the first plate 220 will smooth out the first adjacent surface 410. At the same time, the first plate 220 will also push the excess material bag 400 at the first adjacent surface 410 to the bag corner 430, resulting in more wrinkles on the second side of the bag corner 430. By driving the first plate 220 to move from the first edge position along the surface of the second plate 230, the first plate 220 can use the surface of the second plate 230 as a reference to smooth out the second side of the bag corner 430, thereby reducing the wrinkles on the second side of the bag corner 430.

[0074] In some embodiments of the present invention, reference is made to Figure 3 Step S500 includes, but is not limited to, the following steps:

[0075] Step S510: Drive the second board 230 to reset to the second initial position;

[0076] It is understandable that by driving the second plate 230 to reset to the second initial position, the second plate 230 can avoid the subsequent folding action of the pocket corner 430.

[0077] Step S520: Drive the first plate 220 to move a preset distance from the first edge position along a direction away from the first initial position, wherein the preset distance is the thickness of the bag corner 430;

[0078] refer to Figure 12It is understandable that the pocket corner 430 has a certain thickness. By driving the first plate 220 to move a preset distance from the first edge position away from the first initial position, the probability of interference between the first plate 220 and the pocket corner 430 can be reduced during the subsequent movement of the first plate 220 along the second adjacent surface 420. This avoids interference between the first plate 220 and the pocket corner 430, which would cause wrinkles to form in the pocket corner 430 during the folding process.

[0079] Step S530: Drive the first plate 220 to move along the second adjacent surface 420 to fold the pocket corner 430 to the second adjacent surface 420.

[0080] refer to Figure 13 It is understandable that folding the bag corner 430 to the second adjacent side 420 can reduce the impact of the bag corner 430 on the subsequent packaging and wrapping process of the material bag 400, making the packaged and wrapped material bag 400 more neat and beautiful.

[0081] refer to Figure 4 According to a second aspect of the present invention, a bag sorting device includes a corner folding mechanism 200 and a glue wrapping mechanism 300.

[0082] The corner-folding mechanism 200 includes a drive assembly 210, a first plate 220, and a second plate 230. The drive assembly 210 is connected to the first plate 220 and the second plate 230 respectively. The drive assembly 210 can drive the first plate 220 to move along a first direction to smooth the first adjacent surface 410 of the bag 400. The first direction is parallel to the first adjacent surface 410. The drive assembly 210 can drive the second plate 230 to move along a second direction to smooth the second adjacent surface 420 of the bag 400. The second direction is parallel to the second adjacent surface 420. The drive assembly 210 can drive the first plate 220 to move along the second direction to press the bag corner 430 between the first adjacent surface 410 and the second adjacent surface 420 onto the second adjacent surface 420. The adhesive-wrapping mechanism 300 is disposed on one side of the corner-folding mechanism 200. The adhesive-wrapping mechanism 300 can seal the surface of the bag 400 with adhesive.

[0083] For example, such as Figure 4 , Figure 5 , Figure 6 and Figure 8As shown, the first direction can be left and right, and the second direction can be front and back. Bag corners 430 are formed between two adjacent side walls around the bag 400. The bag 400 has four sides, and correspondingly, four bag corners 430 are formed around the bag 400. The front and back sides of the bag 400 are both designated as first adjacent surfaces 410, and the left and right sides of the bag 400 are both designated as second adjacent surfaces 420. When the corner folding mechanism 200 folds the bag corners 430 of the bag 400, the first plate 220 is located at the first adjacent surface 410 of the bag 400, and the second plate 230 is located at the second adjacent surface 420 of the bag 400. Driven by the drive assembly 210, the first plate 220 can move to the left along the first adjacent surface 410 to flatten the first adjacent surface 410, and the second plate 230 can move forward along the second adjacent surface 420 to flatten the second adjacent surface 420. Then, driven by the drive assembly 210, the first plate 220 can move downward along the second adjacent surface 420 to fold the bag corner 430 to fit against the second adjacent surface 420. Then, the adhesive wrapping mechanism 300 can seal the second adjacent surface 420 with adhesive to bond the bag corner 430 to the second adjacent surface 420. The corner folding mechanism 200 can fold the bag corner 430 on the material bag 400 to the surface of the material bag 400. When the adhesive wrapping mechanism 300 wraps the material bag 400, it can reduce the impact of the bag corner 430 on the operation of the adhesive wrapping mechanism 300, so that the wrapped material bag 400 is more neat and beautiful.

[0084] In some embodiments of the present invention, the corner-folding mechanism 200 includes two sets of corner-folding plate groups, which are distributed along a first direction. The first plate 220 and the second plate 230 of each set of corner-folding plate groups are connected to the drive assembly 210. The two sets of corner-folding plate groups are respectively used to straighten two bag corners 430 distributed along the first direction on the bag 400, so that the two bag corners 430 can be folded to fit against their corresponding second adjacent surfaces 420. For example, as... Figure 5 , Figure 6 and Figure 8As shown, for the two bag corners 430 located on the left and right sides of the bag 400, the two bag corners 430 share a first adjacent surface 410; the two first plates 220 are distributed in the left and right direction and are both located at the first adjacent surface 410 of the bag 400; the two second plates 230 are located at the two second adjacent surfaces 420 on the left and right sides of the bag 400, respectively. Under the drive of the drive assembly 210, the first plate 220 on the right side can move to the right to flatten the first adjacent surface 410, and the second plate 230 on the right side can move forward to flatten the second adjacent surface 420 on the right side. Then, the first plate 220 on the right side can move backward along the second adjacent surface 420 on the right side to fold the bag corner 430 between the first adjacent surface 410 and the second adjacent surface 420 on the right side to fit the second adjacent surface 420 on the right side. By setting two sets of first plates 220 and second plates 230, the corner folding mechanism 200 can simultaneously fold two adjacent corners 430 on the bag 400, resulting in higher work efficiency.

[0085] Further reference Figure 5 and Figure 6 The drive assembly 210 includes a first drive structure 211 and two second drive structures 212. The first drive structure 211 is connected to two first plates 220 respectively via a linkage structure. Under the drive of the first drive structure 211, the two first plates 220 can simultaneously move closer or further apart along a first direction. The two second drive structures 212 are connected to two second plates 230 respectively, and the second drive structures 212 can drive the second plates 230 to move along a second direction. The first drive structure 211 is connected to the two first plates 220 respectively via a linkage structure, thus enabling the first drive structure 211 to simultaneously drive the two first plates 220 to move closer or further apart. The linkage structure reduces the number of first drive structures 211 installed, thereby reducing the number of drive sources installed and lowering the cost of the bag sorting device.

[0086] For details, please refer to Figure 6 The linkage structure includes an annular transmission belt 240, which comprises a first transmission segment 241 and a second transmission segment 242 extending along a first direction, with the transmission directions of the first transmission segment 241 and the second transmission segment 242 being opposite. Two first plates 220 are respectively connected to the first transmission segment 241 and the second transmission segment 242. A first drive structure 211 is connected to the transmission belt 240 and is used to drive the transmission belt 240 to work. Furthermore, during the process of the first drive structure 211 driving the transmission belt 240 to work, the transmission belt 240 can drive the first plate 220 and the second plate 230 to move closer to or further away from each other along the first direction.

[0087] In some embodiments of the present invention, the angle-bending mechanism 200 is provided in two sets, and the two sets of angle-bending mechanisms 200 are distributed along the second direction. For example, as Figure 8As shown, the material bag 400 has four bag corners 430 on its periphery. Each set of folding mechanisms 200 has two sets of first plates 220 and second plates 230. Thus, each set of folding mechanisms 200 can fold two adjacent bag corners 430 on the material bag 400. By setting two sets of folding mechanisms 200, the material bag sorting device can process the four bag corners 430 of the material bag 400 at the same time.

[0088] Furthermore, the two second plates 230 on the same side of the two corner bending mechanisms 200 can be linked together, so that the two second plates 230 on the same side of the two corner bending mechanisms 200 can be driven by the same second drive structure 212, thereby reducing the number of second drive structures 212 installed and reducing the manufacturing cost of the bag sorting device.

[0089] In some embodiments of the present invention, the bag sorting device further includes a conveyor belt 110, which extends along the second direction. The conveying path of the conveyor belt 110 passes through the wrapping mechanism 300 and the cornering mechanism 200. The conveyor belt 110 is used to convey the bag 400 to the wrapping mechanism 300 or the cornering mechanism 200. For example, Figure 4 , Figure 5 and Figure 7 As shown, the bag sorting device includes a frame 100, on which a conveyor belt 110 extending in the front-to-back direction is provided. The tape wrapping mechanism 300 includes four sets of wrapping assemblies 310, which are arranged in pairs on the left and right sides of the conveyor belt 110. The two sets of wrapping assemblies 310 on the same side of the conveyor belt 110 are distributed in the front-to-back direction. The four sets of wrapping assemblies 310 are arranged around two sets of bending mechanisms 200. Each set of wrapping assemblies 310 includes a storage roller 312, a sealing roller 311, and a cutter 313. The storage roller 312 stores tape and can convey the tape to the sealing roller 311. The sealing roller 311 is located on the moving path of the bag 400. After the corner 430 of the bag 400 is folded by the corner folding mechanism 200, the conveyor belt 110 can transport the bag 400 to move in the front-back direction. When the bag 400 passes the winding assembly 310, the sealing roller 311 can abut against the second adjacent surface 420 of the bag 400. Under the action of friction, the tape on the sealing roller 311 can adhere to the second adjacent surface 420 of the bag 400 to seal the second adjacent surface 420 of the bag 400. When the sealing of the second adjacent surface 420 of the bag 400 is completed, the cutter 313 can cut the tape.

[0090] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A method of finishing a bag corner of a bag, characterized by, The bag corner (430) is formed on the corner of the side edge of the material bag (400), and two surfaces adjacent to any of the bag corners (430) in the material bag (400) are respectively set as a first adjacent surface (410) and a second adjacent surface (420); The first plate (220) is driven to move along the first adjacent surface (410) of the material bag (400) from a first initial position to a first edge position, so as to flatten the first adjacent surface (410) of the material bag (400), wherein the first initial position is a middle position of the first adjacent surface (410), and the first edge position is an edge position of the first adjacent surface (410) close to the second adjacent surface (420) of the material bag (400); The second plate (230) is driven to move along the second adjacent surface (420) of the material bag (400) from a second initial position to a second edge position, so as to flatten the second adjacent surface (420) for the first time; the second plate (230) is driven to move along the surface of the first plate (220) from the second edge position, so as to press the bag corner (430) to the surface of the first plate (220) and flatten the first side of the bag corner (430); the second plate (230) is driven to return to the second initial position; the second plate (230) is driven to move along the second adjacent surface (420) of the material bag (400) from the second initial position to the second edge position again, so as to flatten the second adjacent surface (420) for the second time; wherein the second initial position is a middle position of the second adjacent surface (420), and the second edge position is an edge position of the second adjacent surface (420) close to the first adjacent surface (410); The second plate (230) is driven to move away from the bag corner (430), and the first plate (220) is driven to move along the second adjacent surface (420), so as to fold the bag corner (430) to the second adjacent surface (420); The glue winding mechanism (300) is driven to seal glue on the second adjacent surface (420) of the material bag (400) along the extension direction of the bag corner (430), so that the bag corner (430) is tightly attached to the second adjacent surface (420) of the material bag (400). Before the first plate (220) is driven to move along the second adjacent surface (420), the following steps are further included:

2. A method of finishing a bag corner of a bag according to claim 1, wherein The first plate (220) is driven to move along the surface of the second plate (230) from the first edge position, so as to press the bag corner (430) to the surface of the second plate (230) and flatten the second side of the bag corner (430); The first plate (220) is driven to move to the first edge position. The first plate (220) is driven to move along the second adjacent surface (420), including the following steps:

3. A method of finishing a bag corner of a bag according to claim 1, wherein The second plate (230) is driven to reset to the second initial position; The first plate (220) is driven to move a preset distance from the first edge position in a direction away from the first initial position, wherein the preset distance is the thickness of the bag corner (430); ​ The first plate (220) is driven to move along the second adjacent surface (420) to fold the bag corner (430) to the second adjacent surface (420).

4. A bag organizing device, comprising: The bag corner finishing method for realizing the bag corner of the bag according to any one of claims 1 to 3, the bag finishing device comprises: The corner folding mechanism (200) is arranged on the rack (100), the corner folding mechanism (200) comprises a driving assembly (210) and a corner folding plate group, the corner folding plate group comprises a first plate (220) and a second plate (230), the driving assembly (210) is connected with the first plate (220) and the second plate (230) respectively, the driving assembly (210) can drive the first plate (220) to move along a first direction to flatten a first adjacent surface (410) of a bag (400), the first direction is parallel to the first adjacent surface (410), the driving assembly (210) can drive the second plate (230) to move along a second direction to flatten a second adjacent surface (420) of the bag (400), the second direction is parallel to the second adjacent surface (420), and the driving assembly (210) can drive the first plate (220) to move along the second direction to press the bag corner (430) between the first adjacent surface (410) and the second adjacent surface (420) to the second adjacent surface (420). The glue winding mechanism (300) is arranged on one side of the corner folding mechanism (200), and the glue winding mechanism (300) can glue the second adjacent surface (420) of the bag (400).

5. A bag closure device according to claim 4, wherein The corner folding mechanism (200) comprises two groups of corner folding plate groups, the two groups of corner folding plate groups are arranged along the first direction, the first plate (220) and the second plate (230) of the two groups of corner folding plate groups are connected with the driving assembly (210), and the two groups of corner folding plate groups are respectively used for finishing two bag corners (430) distributed along the first direction on the bag (400), so that the two bag corners (430) can be respectively folded to correspond to the second adjacent surface (420).

6. A bag closure device according to claim 5, wherein The driving assembly (210) comprises a first driving structure (211) and two second driving structures (212), the first driving structure (211) is connected with the two first plates (220) through a linkage structure, under the driving of the first driving structure (211), the two first plates (220) can simultaneously move close to or away from each other along the first direction, and the two second driving structures (212) are connected with the two second plates (230) respectively, and the second driving structure (212) can drive the second plate (230) to move along the second direction.

7. A bag closure device according to claim 6, wherein The linkage structure comprises a ring-shaped transmission belt (240), the transmission belt (240) comprises a first transmission section (241) and a second transmission section (242) extending along the first direction, the transmission directions of the first transmission section (241) and the second transmission section (242) are opposite, the first plate (220) is connected with the first transmission section (241) and the second transmission section (242) respectively, and the first driving structure (211) is connected with the transmission belt (240) and used for driving the transmission belt (240) to work.

8. A bag closure device according to claim 5, wherein The folding angle mechanism (200) is provided with two groups, and the two groups of folding angle mechanisms (200) are distributed along the second direction.

9. A bag closure device according to claim 4, wherein Further comprising a conveying belt (110), the conveying belt (110) is arranged to extend along the second direction, a conveying path of the conveying belt (110) passes through the glue winding mechanism (300) and the folding angle mechanism (200), and the conveying belt (110) is used for conveying the material bag (400) to the glue winding mechanism (300) or the folding angle mechanism (200).

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