Outer bag conveying method for buffer inflatable bag production

Abstract

The invention relates to the technical field of forming processing of buffer inflatable bags, in particular to an outer bag conveying method for buffer inflatable bag production, which comprises the following steps of: improving a replacement conveying mode of outer bags, and when the outer bags on the top layer are grabbed and conveyed in a reversing manner, firstly adsorbing one end of the outer bag on the top layer, which is pulled and conveyed; then the other end, right facing the traction conveying direction, of the outer bag is lifted and warped, so that the end of the outer bag on the next layer is exposed, then pressure is applied to the exposed end of the outer bag on the next layer, the freedom degree is limited, and therefore when the outer bag on the top layer is sucked and conveyed, the outer bag on the next layer is completely fixed and cannot be dislocated; the accuracy and precision in the forming process are improved, and the machining efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of forming and processing of cushioning air bags, in particular to an outer bag conveying method for producing cushioning air bags. Background Art

[0002] Cushioning air bags are usually made of multiple layers of materials, including air cushion film, inflatable film, etc. Its working principle is to build an air cushion around the goods to reduce the impact and pressure on the goods during transportation. When the goods arrive at the destination, the cushioning air bag can ensure that the goods are delivered to the recipient intact.

[0003] The structure and working principle of the cushioning air bag give it the following advantages: Protect goods: Cushioning air bags can effectively protect goods from damage during transportation and reduce the damage rate of goods.

[0004] Improve transportation efficiency: Cushioning air bags can prevent goods from being damaged due to shaking during transportation, thereby improving transportation efficiency.

[0005] Reduce transportation costs: Cushioning air bags can be reused, reducing transportation costs.

[0006] Environmental protection: The cushioning airbag is made of recyclable materials and has less impact on the environment.

[0007] The existing processing method of the cushioning air bag is to first separately form an inner bag with an inflation valve inside and an outer bag with a cylindrical outer bag, then insert the inner bag into the outer bag, and then sew the opening of the outer bag to complete the processing and forming of the cushioning air bag.

[0008] For example, in a Chinese patent with patent application number 202410254474.2, an integrated molded cushioning inflatable bag and its manufacturing method are disclosed, which is a molding processing method for an inner bag.

[0009] For example, in the Chinese patent application number 202223130374.4, a dual-channel conveying platform for the outer bag of a cushioning inflatable bag is specifically disclosed, which involves the cutting and conveying of the outer bag.

[0010] However, when the outer bag and the inner bag are assembled, the stacked outer bags are often transported to the bagging station, and are grabbed one by one to be fitted with the inner bag. During the grabbing process, the outer bags adhere to each other due to static electricity and intermolecular forces. When the top layer of outer bag is grabbed in a different direction, the position of the next layer of outer bag is shifted, which often causes the next layer of outer bags to be misplaced and cannot be accurately grabbed and transported. Summary of the invention

[0011] In view of the above problems, the present invention provides a method for conveying outer bags in the production of cushioning inflatable bags, by improving the replacement conveying method of the outer bags, when grabbing and reversing the conveying of the outer bags of the top layer, firstly adsorbing one end of the traction conveying of the outer bag of the top layer, and then lifting and tilting the other end facing the traction conveying direction, so that the end of the outer bag of the next layer is exposed, and then pressure is applied to the exposed end of the outer bag of the next layer to limit the degree of freedom, so that when the outer bag of the top layer is adsorbed and conveyed, the outer bag of the next layer is completely fixed without misalignment, thereby improving the accuracy and precision of the molding process and improving the processing efficiency.

[0012] To achieve the above object, the present invention provides the following technical solutions: An outer bag conveying method for producing a cushioning air bag comprises the following steps: Step T1, unwinding and slitting. After the rolled outer bag material roll is unwinded, it is slit at a slitting station to form a single, square, flat outer bag. The A and B ends of the outer bag are open and the A and B ends are opposite to each other. Step T2, stacking, the cut outer bags are stacked at a stacking station behind the cutting station to form an outer bag pile with at least two groups of stacked outer bags; Step T3, conveying, the outer bag material pile passes through the conveyor line, along the direction of the A and B ends, and is horizontally conveyed backward to the reversing grabbing station; Step T4, grabbing and reversing. The outer bag material pile located at the reversing grabbing station is grabbed one by one from top to bottom by the grabbing robot, and horizontally reversed and transported along the C and D end directions perpendicular to the A and B end directions. When grabbing and reversing, the freedom of the outer bags located in the next layer in the C and D end directions is limited and fixed.

[0013] As an improvement, in step T2, the number of outer bags stacked in the outer bag pile is 5-15 layers. Specifically, the number of outer bags in the outer bag pile can be any group of 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 or 15 layers, but the number of outer bags stacked in the outer bag pile in the present application is not limited to the above number.

[0014] As an improvement, in step T4, the grabbing and reversing includes the following steps: Step t1, adsorption, the C end of the outer bag at the top is adsorbed and fixed by the vacuum suction cup, at this time, the vacuum suction cup does not drive the outer bag to be pulled and transported; Step t2, separation. In synchronization with step t1, a pressure F1 is applied to the D end of the top outer bag at a position offset inward by a distance H, and then the D end of the outer bag is lifted and tilted by the separation suction cup located outside the pressure F1, so that the D end of the top outer bag is separated from the D end of the outer bag located in the next layer; Step t3, positioning, after the D end of the outer bag at the top is tilted, the D end of the outer bag at the next layer is exposed, and after applying pressure F2 to the D end of the outer bag at the next layer, the pressure F1 in step t2 and the adsorption of the separation suction cup are cancelled; Step t4, traction, by pulling the vacuum suction cup, the top outer bag is separated from the reversing grasping station, so that the top outer bag is horizontally transported along the C and D end directions. The traction direction of the vacuum suction cup is to pull the C end of the outer bag, so that the D end of the outer bag gradually separates from the range of the outer bag of the next layer. Since the D end of the outer bag of the next layer is fixed and limited, the outer bag of the top will not cause the outer bag of the next layer to be misaligned when it is pulled and moved.

[0015] As an improvement, in step t2, the relationship between the offset distance H and the width L of the outer bag C and D ends satisfies: 1 / 3*L≤H<1 / 2*L, and the offset distance H is used to separate the adsorption of the suction cup so that the D end can be lifted up.

[0016] As an improvement, in step T2, the pressure F1 acts on the outer bag through a vertically lifted pressure plate, and the length S1 of the pressure plate and the length S2 of the outer bag adsorbed by the separation suction cup satisfy: S1>S2. The degree of freedom of the application of pressure F1 is limited, which can ensure that the top outer bag will not be misaligned with the remaining outer bags below during the lifting process. Even when the top outer bag is lifted, the D ends of the remaining outer bags below will also be lifted to a certain extent due to the adhesion, but their overall position will not be offset. Moreover, the length S1 of the pressure plate is greater than the adsorption length S2 of the separation suction cup. When the separation suction cup adsorbs the D end of the outer bag and lifts it, the top outer bag can be quickly separated from the outer bag below, thereby realizing rapid separation from point to surface.

[0017] As an improvement, in step T2, the lifting direction of the separation suction cup is set at an angle α with the outer bag, the opening direction of the angle α is toward the C end of the outer bag, and the range of the angle α is 80-85°. The inclined setting of the lifting direction of the separation suction cup allows the separation suction cup to better separate from the outer bag below when the D end is lifted by adsorption. At the same time, it can ensure that the outer bag within the range from the separation suction cup to the pressure plate will not be pulled during the lifting of the D end, and the stability of the separation suction cup's adsorption to the outer bag can be ensured when the D end of the outer bag is lifted.

[0018] As an improvement, the angle α between the lifting direction of the separation suction cup and the outer bag can be adjusted.

[0019] Specifically, the separation suction cup is installed at the bottom of the connecting piece, a fixed axis that limits its freedom is passed through the middle of the connecting piece, and the upper part of the connecting piece is driven by the driving piece to rotate and swing around the fixed axis. By adjusting the rotation and swing amplitude of the connecting piece driven by the driving piece, the lifting angle of the separation suction cup can be adjusted.

[0020] As an improvement, in step T3, the pressure F2 acts on the outer bag through a lifting strip, and the lifting direction of the strip is parallel to the lifting direction of the separation suction cup. The application direction of the pressure F2 is consistent with the lifting direction of the separation suction cup, so that when the pressure F2 acts on the outer bag of the next layer, the possible warping at the D end of the outer bag of the next layer can be smoothed out, and at the same time, the freedom of the outer bag of the next layer in the direction of the C and D ends is limited.

[0021] As an improvement, in step t4, when the vacuum suction cup pulls the outer bag, the vacuum suction cup has freedom in the directions of the C and D ends of the outer bag, and the vacuum suction cup also has freedom in the directions of the A and B ends of the outer bag, so that when the vacuum suction cup adsorbs the outer bag for pulling and moving, it can also drive the outer bag to perform deviation correction and adjustment in the directions of the A and B ends.

[0022] The beneficial effects of the present invention are: (1) The present invention improves the replacement conveying method of the outer bag. When grabbing and reversing the conveying direction of the outer bag of the top layer, one end of the traction conveying of the outer bag of the top layer is first adsorbed, and then the other end facing the traction conveying direction is lifted and tilted, so that the end of the outer bag of the next layer is exposed, and then pressure is applied to the exposed end of the outer bag of the next layer to limit the degree of freedom, so that when the outer bag of the top layer is adsorbed and conveyed, the outer bag of the next layer is completely fixed without misalignment, thereby improving the accuracy and precision of the molding process and improving the processing efficiency; (2) The present invention limits the degree of freedom of the top outer bag before lifting the D end of the top outer bag, thereby preventing the top outer bag from being dislocated during the D end lifting process. At the same time, the present invention adsorbs the outer bag at an angle of 80-85 degrees for the separation suction cup for the D end lifting, so that during the lifting process, the limit distance from the separation suction cup to the fixed limit position of the top outer bag will not increase, thereby preventing the separation suction cup from adsorbing the outer bag to lift and lift it, thereby ensuring smooth lifting of the D end of the outer bag. (3) The present invention sets the lifting direction of the pressure strip that generates the pressure F2 in parallel with the lifting direction of the separation suction cup, so that after the D end of the outer bag on the top is lifted up by the separation suction cup, the pressure strip is pressed down along the lifting direction of the separation suction cup, so that when the pressure strip limits the freedom of the outer bag of the next layer, the D end of the outer bag of the next layer can be pressed down and smoothed simultaneously, thereby avoiding the problem of the D end of the outer bag of the next layer moving and misaligning due to the lifting of the D end of the top outer bag; (4) When the vacuum suction cup of the present invention pulls the outer bag for reversing transportation, it not only has the freedom of pulling and moving in the direction of the C and D ends of the outer bag, but also has the freedom at the A and B ends of the outer bag. This enables the vacuum suction cup to have the ability to correct the deviation during the process of pulling the outer bag for transportation, thereby further improving the fitting accuracy of the outer bag and the inner bag.

[0023] In summary, the present invention has the advantages of high processing precision, low defective rate, smooth outer bag transportation, no bag jamming, etc., and is particularly suitable for the technical field of conveying and processing outer bags of cushioning inflatable bags. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is the general assembly diagram of the outer bag conveying system for producing the cushioning air-filled bag of the present invention; Figure 2 This is a schematic diagram of the top view of the outer bag of the present invention; Figure 3 This is a schematic diagram of the side view structure of the outer bag material pile of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the material grabbing manipulator of the present invention; Figure 5 This is a schematic diagram of the side view of the material grabbing manipulator of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the vacuum suction cup of the present invention; Figure 7 It is a schematic diagram of the side structure of the separation suction cup of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the separation suction cup of the present invention; Fig. 9 It is a schematic diagram of the lifting path of the cylinder after the outer bag D end is adsorbed in the present invention; Fig.10 This is a schematic diagram of the D end state of the outer bag of the present invention; Fig.11 This is a schematic diagram of the fixed limit state of the D end of the next layer of outer bag of the present invention; Fig.12 It is a schematic diagram of the traction state of the top outer bag of the present invention.

[0025] In the figure: grabbing robot I, outer bag 100, outer bag material pile 200, conveyor line 300, slitting station 10, stacking station 20, reversing grabbing station 30, mounting frame 1, vacuum suction cup 2, lifting cylinder 21, first linear module 22, second linear module 23, separation suction cup 3, lifting cylinder 31, connecting part 32, fixed shaft 33, driving part 34, adjusting cylinder 35, pressing plate 4, cylinder 41, pressure strip 5, pressing cylinder 51. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] Example: like Figure 1 , 10 -12, a method for conveying outer bags for producing cushioning inflatable bags, comprising the following steps: Step T1, unwinding and slitting, after the rolled outer bag material roll is unwinded, it is slid in the slitting process 10 to form a single, square, flat outer bag 100, and the A and B ends of the outer bag 100 are open; Step T2, stacking, the cut outer bags 100 are stacked at the stacking station 20 behind the cutting station 10 to form an outer bag pile 200 of at least two groups of stacked outer bags; Step T3: conveying: the outer bag material pile 200 is conveyed horizontally backward along the direction of the A and B ends to the reversing grabbing station 30 through the conveyor line 300; Step T4, grabbing and reversing. The outer bag pile 200 located at the reversing grabbing station 30 is grabbed one by one from top to bottom by the grabbing robot I, and horizontally reversed and transported along the C and D end directions perpendicular to the A and B end directions. When grabbing and reversing, the freedom of the outer bags 100 located in the next layer in the C and D end directions is limited and fixed.

[0030] Furthermore, in step T4, the grabbing and reversing includes the following steps: Step t1, adsorption, the C end of the outer bag 100 at the top is adsorbed and fixed by the vacuum suction cup 2; Step t2, separation. In synchronization with step t1, a pressure F1 is applied to the D end of the outer bag 100 at the top at a position offset inward by a distance H (the pressure F1 acts on the outer bag 100 through a vertically lifted pressing plate 4), and the D end of the outer bag 100 is lifted and tilted by the separation suction cup 3 located outside the pressure F1, so that the D end of the outer bag 100 at the top is separated from the D end of the outer bag 100 at the next layer; Step t3, positioning, after the D end of the outer bag 100 at the top is tilted, the D end of the outer bag 100 at the next layer is exposed, and after a pressure F2 is applied to the D end of the outer bag 100 at the next layer (the pressure F2 acts on the outer bag 100 through the lifting pressure strip 5, and the lifting direction of the pressure strip 5 is parallel to the lifting direction of the separation suction cup 3), the pressure F1 in step t2 and the adsorption of the separation suction cup 3 are canceled; Step t4, traction, by pulling the vacuum suction cup 2, the top outer bag 100 is separated from the reversing grasping station 30, so that the top outer bag 100 is horizontally transported along the C and D end directions.

[0031] Among them, in the step T2, the number of outer bags 100 stacked in the outer bag pile is 5-15 layers, and preferably 10 layers in the present embodiment. The 10-layer outer bag pile 200, during the process of completing the grabbing and reversing one by one at the reversing grabbing station 30, the slitting station 10 can just complete the slitting work of 10 layers of new outer bags 100 at the same time, and synchronously, the stacking station 20 also synchronously completes the stacking work of the outer bag pile 200.

[0032] like Figures 1 to 12As shown, it should be further explained that the slitting, stacking and conveying structure of the outer bag 100 in the present application refers to the specific structure of a double-path conveying platform for the outer bag body of a cushioning inflatable bag recorded in the Chinese patent application number 202223130374.4. Therefore, the specific structure of the above-mentioned various parts of the device will not be described in detail here. This embodiment focuses on the specific structure of the outer bag grabbing and reversing. In step T4, the grabbing robot I includes a mounting frame 1, and the mounting frame 1 is located at the reversing grabbing A vacuum suction cup 2, a separation suction cup 3, a pressure plate 4 and a pressure strip 5 are installed at the position directly above the work station 30, wherein the vacuum suction cup 2 is lifted and moved in the vertical direction by the lifting cylinder 21, and at the same time, the vacuum suction cup 2 is pulled and moved in the direction of the C and D ends of the outer bag 100 by the first linear module 22, and is pulled and moved in the direction of the A and B ends of the outer bag 100 by the second linear module 23 for deviation correction. Initially, the vacuum suction cup 2 is located above the C end of the outer bag 100 on the grabbing work station 30.

[0033] The separation suction cup 3 drives the D end of the outer bag 100 to be lifted up by the lifting cylinder 31, and the lifting cylinder 31 is installed at the bottom of the connecting piece 32. An adjusting cylinder 35 is arranged between the lifting cylinder 31 and the connecting piece 32. A fixed shaft 33 that limits its freedom is passed through the middle of the connecting piece 32. The fixed shaft 33 is installed on the mounting frame 1, and the upper part of the connecting piece 32 is driven by the driving piece 34 to rotate and swing around the fixed shaft. Initially, the separation suction cup 3 is tilted toward the C end direction of the outer bag 100. At this time, it is convenient to transport the outer bag material pile 200 to the reversing grasping station 30. After the outer bag material pile 200 is transported to the reversing grasping station 30, the connecting piece 32 is pulled by the driving piece 34 to rotate and swing around the fixed shaft 33, so that the separation suction cup 3 swings to tilt toward the outer bag 100, and then the separation suction cup 3 adsorbs the D end of the top outer bag 100 through the lowering of the lifting cylinder 31. After the adsorption is completed, the lifting cylinder 31 reaches the separation suction cup 3 to lift, so that the D end is tilted (at this time, the pressure plate 4 has applied pressure F1 to the outer bag pile 200 driven by the cylinder 41). At the same time, the pressure strip 5 installed on the other side of the connecting piece 32 is driven by the pressing cylinder 51 to complete the pressing action on the D end of the exposed outer bag 100 of the next layer, and apply pressure F2 to complete the limiting of the outer bag 100 of the next layer. After that, the separation suction cup 3 stops adsorption, the pressing plate 4 is lifted, and the vacuum suction cup 2 pulls the top outer bag 100 out of the grasping station 30 through the first linear module 22. At the same time, the outer bag 100 of the next layer does not move.

[0034] like Figures 9 to 12As shown, it should be emphasized here that the lifting direction of the separation suction cup 3 driven by the lifting cylinder 31 is set at an angle α with the outer bag 100 horizontally arranged below, the opening direction of the angle α is toward the C end of the outer bag, and the range of the angle α is 80-85°, preferably 82°, and the size of the angle α can be adjusted by controlling the swing amplitude of the connecting member 32 pulled by the driving member 34. The size of the angle α cannot be less than 80°. When it is less than 80°, the adsorption force of the separation suction cup 3 on the outer bag 100 will be greatly reduced after the separation suction cup 3 is lowered (due to the existence of the angle α, when the separation suction cup 3 contacts the outer bag 100, a One side contacts first, but due to the flexibility of the separation suction cup itself, when α is less than a certain angle, the separation suction cup 3 can still form adsorption on the outer bag 100), and when it is greater than 85°, when the separation suction cup 3 adsorbs the outer bag 100 and lifts it, the outer bag distance between the separation suction cup 3 and the pressing plate 4 will change from large to small and then to large. Specifically, the position where the separation suction cup 3 adsorbs the outer bag 100 is point E, the position where the separation suction cup 3 drives the outer bag 100 to lift is point F, and the position where the pressing plate 4 presses the outer bag down is point G, then points E, F, and G form a triangle. In order to avoid pulling during the tilting process of the D end of the outer bag 100, EG=F G, EF are the strokes of the lifting cylinder 31, and the preset minimum value of the lifting cylinder 31 is 10 cm (if the stroke is too small, the D end of the outer bag 100 will not be lifted up enough, and the D end of the next layer of the outer bag 100 cannot be exposed). Since EG = cotα*(1 / 2*EF), cot5°≈11.43, cot10°≈5.67, EG is 28.35-57.15 cm. The larger the stroke of the lifting cylinder, the longer the length of EG. The relationship between the offset distance H and the width L of the C and D ends of the outer bag satisfies: 1 / 3*L≤H<1 / 2*L (here it is limited to the pressure plate 4 pairs The downward pressing position of the outer bag 100 cannot be too far from the D end. Once the position is too far, after the separation suction cup 3 grabs the D end and tilts it up, the separation range of the top outer bag 100 and the adjacent outer bag 100 below will be greatly increased, and the corresponding electrostatic effect and the influence of intermolecular force will also be greatly increased. Therefore, the downward pressing position of the pressure plate 4 on the outer bag 100 cannot be too far from the D end). Therefore, it is not difficult to deduce that in this case, the outer bag width L is already between 56cm-170cm, and if the stroke of the lifting cylinder 31 is further expanded, the outer bag width L will also be further expanded. Therefore, the inclination angle of the lifting cylinder α is limited to between 80-85°. It is necessary to ensure the width of the buffer inflatable bag suitable for production, while ensuring the adsorption performance of the separation suction cup 3 on the outer bag 100.

[0035] In addition, the length S1 of the pressing plate 4 and the length S2 of the outer bag adsorbed by the separation suction cup 3 satisfy: S1>S2.

[0036] It should be noted that, what is limited here is that the contact surface between the pressure plate 4 of the present application and the outer bag 100 is larger than the contact surface of the separation suction cup 3 adsorbing the outer bag 100, so that the separation suction cup 3 can overcome the smallest electrostatic effect and intermolecular force as much as possible, thereby achieving the effect of lifting the outer bag 100.

[0037] Furthermore, the inclination angle of the pressure strip 5 when it is pressed down is consistent with the descending inclination angle of the separation suction cup 3, which will cause the pressure strip 5 to form a downward pressure on the outer bag 100 of the next layer, and at the same time, the pressure strip 5 will also form a horizontal component force in the direction of the C and D ends of the outer bag 100. The horizontal component force acts from the C end to the D end, so that the D end of the outer bag 100 of the next layer is smoothed.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for conveying outer bags in the production of cushioning inflatable bags, characterized in that: The following steps are involved: Step T1, unwinding and slitting: after the rolled outer bag material roll is unwinded, it is slit at a slitting station to form a single, square, flat outer bag, with both ends A and B of the outer bag being open; Step T2, stacking, the cut outer bags are stacked at a stacking station behind the cutting station to form an outer bag pile with at least two groups of stacked outer bags; Step T3, conveying, the outer bag material pile passes through the conveyor line, along the direction of the A and B ends, and is horizontally conveyed backward to the reversing grabbing station; Step T4, grabbing and reversing. The outer bag material pile located at the reversing grabbing station is grabbed one by one from top to bottom by the grabbing robot, and horizontally reversed and transported along the C and D end directions perpendicular to the A and B end directions. When grabbing and reversing, the freedom of the outer bags located in the next layer in the C and D end directions is limited and fixed.

2. The outer bag conveying method for producing a cushioning inflatable bag according to claim 1, characterized in that: In the step T2, the number of outer bags stacked in the outer bag pile is 5-15 layers.

3. The outer bag conveying method for producing a cushioning inflatable bag according to claim 1, characterized in that: In step T4, the grabbing and reversing comprises the following steps: Step t1, adsorption, the C end of the outer bag at the top is adsorbed and fixed by a vacuum suction cup; Step t2, separation. In synchronization with step t1, a pressure F1 is applied to the D end of the top outer bag at a position offset inward by a distance H, and then the D end of the outer bag is lifted and tilted by the separation suction cup located outside the pressure F1, so that the D end of the top outer bag is separated from the D end of the outer bag located in the next layer; Step t3, positioning, after the D end of the outer bag at the top is tilted, the D end of the outer bag at the next layer is exposed, and after applying pressure F2 to the D end of the outer bag at the next layer, the pressure F1 in step t2 and the adsorption of the separation suction cup are cancelled; Step t4, traction, by pulling the vacuum suction cup, the top outer bag is separated from the reversing grabbing station, so that the top outer bag is horizontally transported along the C and D end directions.

4. The outer bag conveying method for producing a cushioning inflatable bag according to claim 3, characterized in that: In the step t2, the relationship between the offset distance H and the width L of the outer bag C and D ends satisfies: 1 / 3*L≤H<1 / 2*L.

5. The outer bag conveying method for producing a cushioning inflatable bag according to claim 3, characterized in that: In the step t2, the pressure F1 acts on the outer bag through a vertically raised and lowered pressing plate, and the length S1 of the pressing plate and the length S2 of the outer bag adsorbed by the separation suction cup satisfy: S1>S2.

6. The outer bag conveying method for producing a cushioning inflatable bag according to claim 3, characterized in that: In the step t2, the separation suction cup is lifted in a direction that forms an angle α with the outer bag, the opening direction of the angle α is toward the C end of the outer bag, and the range of the angle α is 80-85°.

7. The outer bag conveying method for producing a cushioning inflatable bag according to claim 6, characterized in that: The included angle α between the lifting direction of the separation suction cup and the outer bag can be adjusted.

8. The outer bag conveying method for producing a cushioning air bag according to claim 7, characterized in that: The separation suction cup is installed at the bottom of the connecting piece, a fixed shaft which limits the degree of freedom of the connecting piece is passed through the middle of the connecting piece, and the upper part of the connecting piece is driven by the driving piece to rotate and swing around the fixed shaft.

9. The outer bag conveying method for producing cushioning inflatable bags according to claim 3, characterized in that: In the step t3, the pressure F2 acts on the outer bag through a lifting strip, and the lifting direction of the strip is parallel to the lifting direction of the separation suction cup.

10. The outer bag conveying method for producing a cushioning air bag according to claim 3, characterized in that: In the step t4, when the vacuum suction cup pulls the outer bag, the vacuum suction cup has freedom in the direction of the C and D ends of the outer bag, and also has freedom in the direction of the A and B ends of the outer bag.

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