Bag side suction middle sealing misalignment opening bonding device

Abstract

The utility model relates to paper bag making machine field discloses a bag body side suction middle seal misplacement bag mouth bonding device, and this device includes a bag body side suction middle seal misplacement bag mouth bonding device, including mould, outer package side insert component, inner hang side insert component and side suction component, and the mould liftable motion will down pressure bag body piece material, outer package side insert component drives the outer package side piece of bag body and folds inwards, side suction component connects negative pressure source and with the outer surface contact of inner insert side piece, the side suction component of mould x axle direction both sides is connected with the power source that drives its synchronous downward movement, and the side suction component has the second stroke of upward movement after first stroke end, drives inner insert side piece and forms the socket between outer package side piece and the gusset piece from below to above insertion into, the utility model makes the function surface of side insertion to be directly located in the inner insert side piece, and the insertion position is accurate, stable, and simultaneously, the inner insert side piece height is lowered in advance in the down pull stroke, guarantees the top of socket when can be inserted to one time in the subsequent up insertion.

Description

Technical Field

[0001] This utility model relates to the field of paper bag making machines, and in particular to a bag body side suction center seal misalignment bag opening bonding device. Background Technology

[0002] Center-sealed paper bags require the sides to be glued together in a U-shape. For bags where both the fixed and moving sides need to be sealed, direct gluing is not possible. Instead, the inner side panels on each side must be inserted into the outer side panel, and then overlapped to achieve gluing. Existing insertion mechanisms operate on the moving surface (front of the bag), indirectly pushing the inner side panels upwards to insert them into the opening formed between the outer side panel and the folded flap by pushing the moving surface. After insertion, the sides are heat-pressed together. This method operates on the moving surface, resulting in a long force transmission chain. The actual displacement of the inner side panels is affected by the stiffness of the material and friction, leading to poor control precision and a tendency for them to be inserted too far in or too far out.

[0003] In addition, there are no additional horizontal limits between the mold and the sheet material. The accuracy of the sheet material transmission is determined by the mold. After the mold is pressed down, misalignment often occurs from left to right. After the bag body is formed, the outer side panel is higher than the inner side panel. When inserting, the inner side panel can only return to its original height and cannot continue to move upward under the obstruction of the mold. This results in a height difference between the top of the insertion opening and the top edge of the inner side panel. This height difference causes the bag opening and side edge to be crooked when the side seal is pressed. The aesthetics, sealing strength and squareness of the finished product are reduced, affecting the aesthetics and bag quality.

[0004] To address the issues of insufficient precision in the sealing structure of paper bags in existing technologies, as well as the impact on bag quality caused by bag body misalignment, a bag body side suction and center sealing misalignment adhesive device is needed. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by providing a bag body side suction center seal misalignment bag opening bonding device.

[0006] To solve the above-mentioned technical problems, this utility model achieves its solution through the following technical solution: A side-suction, center-seal, misaligned bag opening bonding device is disclosed. The bag body includes a fixed surface and a movable surface. Outer side panels are connected to both sides of the fixed surface along the x-axis, and inner side panels are connected to both sides of the movable surface along the x-axis. The device includes a mold, an inner side-insertion component, an outer side-insertion component, and a side-suction component. The mold's lifting motion presses down the bag sheet material, causing the fixed and moving surfaces to adhere to the mold; the inner side insert component moves in the y-axis direction or arc direction, causing the inner side insert piece with the overlapping edge to fold inward; the outer side insert component moves in the y-axis direction or arc direction, causing the outer side insert piece of the bag to fold inward.

[0007] The side-suction component is connected to a negative pressure source and contacts the outer surface of the inner insert side piece. The side-suction components on both sides of the mold along the x-axis are connected to a power source that drives them to move downwards synchronously. The side-suction component has a first stroke that moves the inner insert side piece downwards, making the top edge of the inner insert side piece lower than the bottom edge of the folded flap at the top of the outer wrapping side piece. After the first stroke, the side-suction component has a second stroke that moves upwards, driving the inner insert side piece to insert from bottom to top into the slot formed between the outer wrapping side piece and the folded flap. During the first or second stroke of the side-suction component, the inner surface of the outer wrapping side insert component contacts the folded flap and maintains the slot between the outer wrapping side piece and the folded flap. The inner insert side piece can remain in place, retract, or move together with the side-suction component. This provides sufficient space for the inner insert side piece to insert into the slot, ensuring a smooth insertion process. When the side-suction component moves downwards, the inner insert side piece makes way for the side-suction component. This structure allows the working surface to be directly located on the inner insert side piece, enabling precise control and ensuring that the insertion process is not affected by deformation of the fixed or moving surfaces, resulting in accurate and stable insertion positions. At the same time, the pull-down stroke pre-lowers the height of the inner insert side piece, ensuring that it can be inserted into the top of the socket in one go during subsequent insertion.

[0008] Preferably, the side suction component is connected to a power source that drives its movement in the x-direction.

[0009] Preferably, the side suction component is connected to the inner side insertion component and moves downward synchronously. This method allows the side suction component and the inner side insertion component to rise and fall synchronously, reducing the number of independent drive components and simplifying control.

[0010] Preferably, the inner side insert and the outer side insert are plate-shaped, and the inner side insert has a relief groove. When the side suction component moves downward, it extends into the relief groove and contacts the surface of the bag.

[0011] Preferably, the bag-removing belt on the outer packaging side, which is in contact with the fixed surface, is also included. When the outer packaging side bag-removing belt rotates, it drives the fixed surface of the bag to move up and down in conjunction with the outer packaging side piece through friction.

[0012] Preferably, the device also includes an inner insert side unloading belt that contacts the moving surface. The inner insert side unloading belt and the outer packaging side unloading belt are located on opposite sides of the mold. When the inner insert side unloading belt rotates, it drives the moving surface of the bag to move up and down in conjunction with the inner insert side piece through friction.

[0013] Preferably, during or after the second stroke of the side suction component, the outer packaging side unloading belt has the power to move the fixed surface of the bag downward, thereby providing a force to move the outer packaging side piece downward so that the top of the inner side of the insertion opening is flush with the top of the inner insertion side piece. The action of the bag opening flushing component can be completed using the structure necessary for demolding itself, and only the action of the unloading belt needs an additional stroke, which greatly saves the cost of setting up an additional bag opening flushing component.

[0014] Preferably, the coefficient of friction of the outer-side unloading belt is less than that of the inner-side unloading belt, or the distance between the outer-side unloading belt and the outer surface of the mold is greater than that between the inner-side unloading belt and the outer surface of the mold. This arrangement ensures that the frictional force provided to the bag body by the outer-side unloading belt after it pulls the top of the insertion opening between the outer-side panel and the folded panel against the inner-side panel is less than the frictional force provided to the bag body by the inner-side unloading belt. This causes slippage between the outer-side unloading belt and the bag body, preventing further downward movement of the bag's fixing surface.

[0015] Preferably, there are at least two outer-side unloading belts and at least two inner-side unloading belts, with the two outer-side unloading belts contacting and moving synchronously with the two sides of the fixed surface of the bag.

[0016] Preferably, the device also includes a bag opening flushing component corresponding to the outer surface of the fixed surface or the outer packaging side piece. The bag opening flushing component contacts the fixed surface or the outer packaging side piece by means of adsorption, friction or pushing through a negative pressure source. During or after the second stroke of the side suction component, the bag opening flushing component has a force that drives the outer packaging side piece to move downward so that the top of the inner side of the insertion opening is flush with the top of the inner insertion side piece. In addition, the mold and the paper bag are prone to misalignment, making it difficult to achieve perfect alignment in the horizontal direction. As a result, after the mold presses down with the paper bag, the inner and outer side panels on both sides are not flush, especially when the outer side panel is higher. Because the inner side panel can only return to its original position after the misalignment, it cannot move to a higher position due to the obstruction of the mold. Therefore, there is a gap between the top of the insertion of the outer side panel and the folded panel and the inner side panel. This gap can be eliminated by the bag opening leveling component. During the insertion process, one side of the bag bottom is already flush with the bottom of the mold. The downward movement of the outer side panel can move the other side of the bag body down to be flush with the bag opening, solving the problem of the bag body shape being skewed and the side edges not being vertical due to the uneven bag opening in the existing technology, making the formed bag body more beautiful.

[0017] Preferably, before the inner side panel is inserted into the slot, the outer side panel and the inner overlapping side panel remain outside the outer side panel and the inner side panel, respectively, with the contact area between the outer side panel and the outer side panel being smaller than the area of ​​the outer side panel. When the inner overlapping side panel contacts the inner side panel, the overlap edge should not contact the mold. This arrangement prevents the outer side panel and the inner side panel from popping outwards, avoids obstruction during the downward and upward insertion of the inner side panel, and also avoids collisions between the inner side panels or the folded flaps of the bag body, ensuring smooth insertion. The outer side panel and the outer side panel do not completely cover each other, providing space for the folded flap outside the outer side panel to warp outwards, making the slot large enough for the inner side panel on the other side to be inserted, avoiding incorrect adhesion of the sheet material due to premature compression.

[0018] Preferably, the mold also includes a flap insert, which folds the flap of the bag upward by touching it. The mold has a hinge plate on its side, which can move along the y-axis towards or away from the mold.

[0019] Preferably, after the plywood applies pressure to the seal of the paper bag near the mold, it retracts away from the mold. Subsequently, the inner insert side unpacking belt has a third stroke of forward rotation, and the outer packaging side unpacking belt rotates synchronously, causing the glued bag to detach downward from the mold.

[0020] This utility model, by adopting the above technical solution, has significant technical effects: When inserting the bag, the working surface of the bag body is directly located on the inner insert side piece, which provides precise control and ensures that the insertion process is not affected by the deformation of the fixed or moving surface, resulting in a precise and stable insertion position. At the same time, the pull-down stroke pre-lowers the height of the inner insert side piece, ensuring that it can be inserted into the top of the insertion opening in one go during subsequent insertion.

[0021] This gap can be eliminated by using a bag opening flushing component. During the insertion process, one side of the bag bottom is already flush with the bottom of the mold. Adding the downward movement of the outer packaging side piece can move the other side of the bag body down to be flush with the bag opening, solving the problem of the bag body shape being crooked and the side overlap not being vertical due to the uneven bag opening in the existing technology, making the formed bag body more beautiful. Attached Figure Description

[0022] Figure 1 This is a partial structural diagram of the present invention before the outer side insert component and the inner side insert component are activated; Figure 2 yes Figure 1 A magnified view of part A in the image; Figure 3 This is a schematic diagram of the structure of this utility model in front of the socket; Figure 4 yes Figure 3 A magnified view of part B in the image; Figure 5 This is a schematic diagram of the structure of the present invention after the inner side of the bag-removing belt on one side completes the first stroke during the process of the upper and lower misaligned bag opening; Figure 6 yes Figure 5 A magnified view of part C.

[0023] The parts referred to by the numbers in the above attached figures are as follows: 61, mold; 62, outer side insert component; 63, inner side insert component; 631, clearance groove; 64, outer side bag release belt; 65, inner side bag release belt; 66, composite plate; 67, flap insert plate; 68, side suction component; 90, bag body sheet; 91, outer side sheet; 92, inner side sheet; 921, overlap; 93, fixed surface; 94, movable surface; 95, insertion opening; 96, flap; 97, flap. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0025] Example 1 A bag body side suction center seal misaligned bag opening adhesive device, such as Figure 1-2 As shown, the bag body includes a fixed surface 93 and a movable surface 94. Outer side panels 91 are connected to both sides of the fixed surface 93 along the x-axis, and inner side panels 92 are connected to both sides of the movable surface 94 along the x-axis. The bag body side-suction center-sealing misaligned opening bonding device includes a mold 61, an inner side-insertion component 63, an outer side-insertion component 62, and a side-suction component 68. like Figure 3-4 As shown, the mold 61 can move up and down to press down the bag sheet 90, causing the fixed surface 93 and the moving surface 94 to adhere to the mold; the inner side insert component 63 moves in the y-axis direction or arc direction to drive the inner side piece 92 with the overlapping edge 921 to fold inward; the outer side insert component 62 moves in the y-axis direction or arc direction to drive the outer side piece 91 of the bag to fold inward. Specifically, the y-axis direction movement means that the inner side insert component 63 or the outer side insert component 62 moves laterally in a direction parallel to its surface, thereby folding the side piece of the paper bag inward; the arc direction movement means that the inner side insert component 63 or the outer side insert component 62 folds the side piece of the paper bag inward in a hinge-like manner.

[0026] like Figure 5-6As shown, the side suction component 68 is connected to a negative pressure source and contacts the outer surface of the inner insert side piece 92; the side suction components 68 on both sides of the mold 61 in the x-axis direction are connected to a power source that drives them to move downward synchronously. The side suction component 68 has a first stroke that drives the inner insert side piece 92 to move downward, so that the height of the top edge of the inner insert side piece 92 is lower than the bottom edge of the folded piece 96 at the top of the outer wrapping side piece 91; after the first stroke, the side suction component 68 has a second stroke that moves upward, driving the inner insert side piece 92 to be inserted from bottom to top into the insertion opening 95 formed between the outer wrapping side piece 91 and the folded piece 96; during the first or second stroke of the side suction component 68, the inner surface of the outer wrapping side insert component 62 contacts the folded piece 96 and maintains the state where the insertion opening 95 exists between the outer wrapping side piece 91 and the folded piece 96; the side suction component 68 can be a suction cup, suction plate, or other component that can be connected to a negative pressure source, and the specific connection structure is not described in detail here. When the side suction component 68 moves downward, the inner side insertion component 63 makes way for the side suction component 68. Here, "when the side suction component 68 moves downward" refers to moving directly downward and diagonally downward, rather than the definition of "directly downward".

[0027] In one embodiment, the side suction component 68 is connected to a power source that drives its movement in the x-direction. The side suction component 68 can be configured to move closer to the mold and further away from the mold in the x-axis direction, depending on specific needs. This allows it to move closer to the mold during suction for a tighter adhesion, and also allows for fine-tuning of the position of the inner insert side piece 92 in the x-axis direction during insertion, facilitating its entry into the insertion port 95. This configuration, used for suction of the bag, allows the power source to be a linear motor, electric cylinder, pneumatic cylinder, or a structure with added connecting rods, belts, guide rails, lead screws, etc. The choice of power source is conventional for those skilled in the art and is not limited here.

[0028] like Figure 4 As shown, the inner side insert component 63 and the outer side insert component 62 are plate-shaped. The inner side insert component 63 has a relief groove 631. When the side suction component 68 moves downward, it extends into the relief groove 631 and contacts the surface of the bag.

[0029] In one embodiment, the side suction component 68 is connected to the inner side insert component 63 and moves downward synchronously. The side suction component 68 is mounted on the inner side insert component 63 and moves inward thereafter to adsorb the inner insert side piece 92 of the bag. In another embodiment, the side suction component 68 moves relative to the inner side insert component 63, allowing sufficient space for the side suction component 68 to move in the positioning groove 631.

[0030] The following are optional implementation methods: It also includes an outer packaging side unpacking belt 64 that contacts the fixed surface 93. When the outer packaging side unpacking belt 64 rotates, it drives the fixed surface 93 of the bag to move up and down in conjunction with the outer packaging side piece 91 through friction.

[0031] It also includes an inner insert side unloading belt 65 that contacts the moving surface 94. The inner insert side unloading belt 65 and the outer packaging side unloading belt 64 are located on opposite sides of the mold 61. When the inner insert side unloading belt 65 rotates, it drives the moving surface 94 of the bag body to move up and down in conjunction with the inner insert side piece 92 through friction.

[0032] It also includes a bag opening flushing component corresponding to the outer surface of the fixed surface 93 or the outer side panel 91. The bag opening flushing component contacts the fixed surface 93 or the outer side panel 91 through suction, friction, or pushing by connecting to a negative pressure source. During or after the second stroke of the side suction component 68, the bag opening flushing component has a force that drives the outer side panel 91 downward so that the top of the inner side of the insertion opening 95 is flush with the top of the inner side panel 92. The bag opening flushing component can be an additional suction nozzle, push head, suction plate, friction belt, etc. connected to a power source. Its working surface can be the fixed surface 93 or the outer side panel 91, or it can act on both the fixed surface 93 and the outer side panel 91 simultaneously. The ultimate purpose is to provide a force for the outer side panel 91 to move downward. The following is an example of a bag opening flushing component: During or after the second stroke of the side suction component 68, the outer bag release belt 64 has the power to move the fixed surface 93 of the bag body downward, thereby providing the force to move the outer side piece 91 downward so that the top of the inner side of the insertion opening 95 is flush with the top of the inner insertion side piece 92.

[0033] The coefficient of friction of the outer packaging side unpacking belt 64 is less than that of the inner insertion side unpacking belt 65, or the distance between the outer packaging side unpacking belt 64 and the outer surface of the mold 61 is greater than the distance between the inner insertion side unpacking belt 65 and the outer surface of the mold 61.

[0034] There are at least two outer-side bag-removing belts 64 and at least two inner-side bag-removing belts 65. At least two outer-side bag-removing belts 64 are in contact with both sides of the fixed surface 93 of the bag body and move synchronously.

[0035] In one embodiment, before the inner insert side piece 92 is inserted into the socket 95, the outer wrapping side insert component 62 and the inner overlapping side insert component 63 are respectively held outside the outer wrapping side piece 91 and the inner insert side piece 92. The contact area between the outer wrapping side insert component 62 and the outer wrapping side piece 91 is smaller than the area of ​​the outer wrapping side piece 91. When the inner overlapping side insert component 63 contacts the inner insert side piece 92, the overlap edge 921 is kept out of contact with the mold 61. The distance between the outer wrapping side insert component 62 and the outer wrapping side piece 91, and the contact area between the outer wrapping side insert component 62 and the outer wrapping side piece 91, partially determine the size of the socket opening. Therefore, it is necessary to appropriately adjust the stroke of the outer wrapping side insert component 62 in the forward and backward and left and right directions, in conjunction with the insertion position of the inner overlapping side insert component 63 and the distance between it and the mold, so that the inner insert side piece 92 can move down smoothly and then rise again, and can be smoothly inserted into the socket.

[0036] It also includes a flap insert 67, which folds the flap 97 of the bag upward by touching it. The side of the mold 61 is provided with a hinge plate 66, which can move along the y-axis direction to approach or move away from the mold 61.

[0037] After the plywood 66 applies pressure to the seal of the paper bag near the mold 61, it retracts away from the mold 61. Then, the inner side unpacking belt 65 has a third stroke of forward rotation, and the outer side unpacking belt 64 rotates synchronously, causing the glued bag to detach downward from the mold 61.

[0038] Taking the outer side bag release belt 64 as an example, the specific working steps are as follows: if it is another bag opening flushing component, the only difference is the working surface and the power transmission method, but the essence of its working principle is the same: 1. Placement of bag body sheet: Place the bag body sheet 90 under the mold 61. The bag body sheet 90 includes an outer side sheet 91, an inner side sheet 92, a fixed surface 93, and a movable surface 94.

[0039] 2. Mold pressing: The mold 61 descends, pressing down the bag sheet 90 to initially form the bag body into a U-shape.

[0040] 3. Side panel folding: The relative movement between the folding tongue plate 67 and the folding tongue piece 97 causes the folding tongue piece 97 to fold upward. Then, the inner side insert component 63 and the outer side insert component 62 move in the y-axis direction, respectively, causing the outer side piece 91 and the inner side piece 92 to fold inward. Before the outer side insert component 62 and the inner side insert component 63 complete the folding, the folding tongue plate 67 moves downward and retracts.

[0041] 4. Insertion of the inner side panel into the slot: The side suction component 68 first moves the inner side panel 92 downwards in a first stroke, so that the top edge of the inner side panel 92 is lower than the bottom edge of the folded flap 96 at the top of the outer side panel 91; then, after the first stroke, the side suction component 68 moves upwards in a second stroke, moving the moving surface 94 of the bag body so that the inner side panel 92 is inserted from bottom to top into the slot 95 formed between the outer side panel 91 and the folded flap 96. During this process, the side suction components 68 on both sides move synchronously. Relative to the bag body, the movements on both sides of the x-axis are synchronous; here, synchronization refers to mirror image movement.

[0042] 5. Bag opening leveling: During or after the second stroke of the inner insertion side bag opening belt 65, the outer packaging side bag opening belt 64 has the power to move the fixed surface 93 of the bag body downward. If the bag opening is already level, the outer packaging side bag opening belt 64 provides the force to move the outer packaging side piece 91 downward, but the outer packaging side piece 91 does not move. After the inner insertion side piece 92 is inserted into the insertion port in the previous step, it will naturally touch the top of the inner side of the insertion port 95. If the outer packaging side piece 91 was originally higher than the inner insertion side piece 92, the outer packaging side bag opening belt 64 provides the force to move the outer packaging side piece 91 downward so that the top of the inner side of the insertion port 95 is level with the top of the inner insertion side piece 92.

[0043] 6. Applying pressure to the center seal: The plywood 66 moves along the y-axis towards the mold 61 and applies pressure to the center seal of the paper bag to make the center seal adhere.

[0044] 7. Demolding: The plywood 66 retracts away from the mold 61, the inner side bag removal belt 65 has a third stroke of forward rotation, and the outer side bag removal belt 64 rotates synchronously, driving the glued bag body downward to detach from the mold 61.

[0045] The mold, side suction component 68, outer side insertion component, inner side insertion component, folding tongue insert plate, and composite plate 66 of this utility model can all be driven by cylinders, motors, or by cylinders and motors using gear and rack mechanisms, lead screw and nut mechanisms, and slider guide rail mechanisms to achieve motion. The rotation of the inner side bag-removing belt 65 and the outer side bag-removing belt 64 can be achieved by the motor driving the synchronous pulley to rotate, thereby driving the belts sleeved on the synchronous pulley to rotate. The drive device is a conventional setting for those skilled in the art, and the above is only one embodiment; other methods are not described in detail here. In summary, this patent, through ingenious structural design and reasonable action coordination, solves the problems existing in the prior art, improves the production quality and efficiency of the bag, and has significant beneficial effects.

[0046] In the description of this utility model, it should be understood that the terms "center," "length," "width," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. The x-axis direction is the extension direction of the crease line of the flap of the bag body material, and the y-axis direction is the direction of the line connecting the two sides of the bag opening of the bag body material. The y-axis direction is perpendicular to the x-axis direction, and both the x-axis and y-axis directions are located in the horizontal plane. It should be noted that... Figure 1 , 35 and 6 are shown only on one side of the bag to illustrate its state; the parts on the other side are not shown, but this does not mean that there are no parts on the other side. This is done solely for ease of description and simplification, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0047] In summary, the above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall fall within the scope of the patent of the present utility model.

Claims

1. A side-suction, center-sealing, misaligned bag opening adhesive device, wherein the bag body includes a fixed surface (93) and a movable surface (94) opposite to each other, with outer side pieces (91) respectively connected to both sides of the fixed surface (93) in the x-axis direction, and inner side pieces (92) respectively connected to both sides of the movable surface (94) in the x-axis direction; characterized in that, include - The mold (61) can move up and down to press down the bag sheet (90) so that the fixed surface (93) and the moving surface (94) are attached to the mold; - The inner side insert component (63) folds inward by moving in the y-axis direction or in an arc direction, causing the inner side piece (92) with the side edge (921) to fold inward; - The outer side insert (62) drives the outer side panel (91) of the bag body to fold inward through the movement in the y-axis direction or the arc movement; - Side suction component (68), the side suction component (68) is connected to a negative pressure source and contacts the outer surface of the inner insert side piece (92); the side suction components (68) on both sides of the mold (61) in the x-axis direction are connected to a power source that drives them to move downward synchronously, the side suction component (68) has a first stroke that drives the inner insert side piece (92) to move downward, so that the height of the top edge of the inner insert side piece (92) is lower than the bottom edge of the folded piece (96) at the top of the outer wrapping side piece (91); after the first stroke, the side suction component (68) has a second stroke that moves upward, driving the inner insert side piece (92) to be inserted from bottom to top into the insertion hole (95) formed between the outer wrapping side piece (91) and the folded piece (96); During the first or second stroke of the side suction component (68), the inner surface of the outer side insert component (62) contacts the folded piece (96) and maintains a state in which there is an insertion opening (95) between the outer side piece (91) and the folded piece (96).

2. The bag body side suction center seal misaligned bag opening adhesive device according to claim 1, characterized in that: The side suction component (68) is connected to a power source that drives its movement in the x direction.

3. The bag body side suction center seal misaligned bag opening adhesive device according to claim 1, characterized in that: The inner side insert component (63) and the outer side insert component (62) are plate-shaped. The inner side insert component (63) has a relief groove (631). When the side suction component (68) moves downward, it extends into the relief groove (631) and contacts the surface of the bag.

4. A bag body side suction center seal misaligned bag opening adhesive device according to any one of claims 1-3, characterized in that: The side suction component (68) is connected to the inner side insert component (63) and moves downward synchronously.

5. The bag body side suction center seal misaligned bag opening adhesive device according to claim 1, characterized in that: It also includes an outer packaging side unpacking belt (64) that contacts the fixed surface (93). When the outer packaging side unpacking belt (64) rotates, it drives the fixed surface (93) of the bag body to move up and down in conjunction with the outer packaging side piece (91) through friction.

6. The bag body side suction center seal misaligned bag opening adhesive device according to claim 5, characterized in that: It also includes an inner insert side bag removal belt (65) that contacts the moving surface (94). The inner insert side bag removal belt (65) and the outer packaging side bag removal belt (64) are located on opposite sides of the mold (61). When the inner insert side bag removal belt (65) rotates, it drives the moving surface (94) of the bag body to move up and down in conjunction with the inner insert side piece (92) through friction.

7. The bag body side suction center seal misaligned bag opening adhesive device according to claim 5, characterized in that: During or after the second stroke of the side suction component (68), the outer packaging side bag removal belt (64) has the power to move the fixed surface (93) of the bag body downward, thereby providing the force to move the outer packaging side piece (91) downward so that the top of the inner side of the insertion port (95) is flush with the top of the inner insertion side piece (92).

8. The bag body side suction center seal misaligned bag opening adhesive device according to claim 6, characterized in that: The coefficient of friction of the outer packaging side unloading belt (64) is less than that of the inner insertion side unloading belt (65), or the distance between the outer packaging side unloading belt (64) and the outer surface of the mold (61) is greater than the distance between the inner insertion side unloading belt (65) and the outer surface of the mold (61). There are at least two outer packaging side unloading belts (64) and at least two inner insertion side unloading belts (65). At least two outer packaging side unloading belts (64) are in contact with the two sides of the fixed surface (93) of the bag body and move synchronously.

9. A bag body side suction center seal misaligned bag opening adhesive device according to any one of claims 1-3, characterized in that: It also includes a bag opening flushing component corresponding to the outer surface of the fixed surface (93) or the outer packaging side piece (91). The bag opening flushing component contacts the fixed surface (93) or the outer packaging side piece (91) by adsorption, friction or pushing through a negative pressure source. During or after the second stroke of the side suction component (68), the bag opening flushing component has a force that drives the outer packaging side piece (91) to move downward so that the top of the inner side of the insertion port (95) is flush with the top of the inner insertion side piece (92).

10. The bag body side suction center seal misaligned bag opening adhesive device according to claim 1, characterized in that: Before the inner insert side piece (92) is inserted into the socket (95), the outer side insert component (62) and the inner side insert component (63) are respectively kept outside the outer side piece (91) and the inner side piece (92). The contact area between the outer side insert component (62) and the outer side piece (91) is smaller than the area of ​​the outer side piece (91). When the inner side insert component (63) contacts the inner side piece (92), the overlap edge (921) is kept from contacting the mold (61).

Images