Bidirectional full-automatic production method of buffer inflatable bag

Abstract

The invention relates to the technical field of forming processing of buffer inflatable bags, in particular to a bidirectional full-automatic production method of buffer inflatable bags, which is characterized in that inner bags and outer bags are bidirectionally conveyed, so that the outer bags and the inner bags output by one inner bag production line and one outer bag production line can simultaneously correspond to two bagging stations; therefore, inflatable bag blanks completed by the two bagging stations are conveyed to one sewing station to be subjected to sewing treatment of an outer bag opening, the purpose of adjusting the working rhythm of the bagging stations and the sewing station is achieved, the machining efficiency of the buffer inflatable bag is multiplied, meanwhile, the production cost cannot be greatly increased, and in addition, the production efficiency of the buffer inflatable bag is improved. When the outer bags are conveyed every time, a single-group stacking mode is adopted, and 5-15 layers of outer bags are conveyed at the same time, so that the number of the outer bags can be adjusted and controlled, the conveying number of the outer bags can be adjusted along with the forming speed of the inner bags, and the processing efficiency is maximized.

Description

Technical Field

[0001] The invention relates to the technical field of forming and processing of cushioning air bags, in particular to a two-way fully automatic production method of 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 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.

[0004] However, the existing processing methods for cushioning air bags are mostly one-way fully automatic processing and production methods. The so-called one-way fully automatic processing and production methods refer to that one outer bag processing line corresponds to one inner bag processing line. After the outer bag and the inner bag are bagged at the bagging station, they are sewn to form a cushioning air bag. However, due to the large time difference between the bagging processing time of the inner bag and the outer bag and the sewing processing time of the cushioning air bag, the sewing equipment at the sewing station often needs to stop and wait for the inner bag and the outer bag to complete the fitting work. The processing rhythm of each station is not in sync, resulting in low work efficiency. Simply increasing the number of outer bag processing lines and the number of inner bag processing lines to increase the work efficiency of the inner bag and the outer bag fitting will also cause a significant increase in manufacturing costs.

[0005] Therefore, there is an urgent need for a fully automatic production method that increases costs less and can quickly improve the efficiency of the fitting process of the inner bag and the outer bag to adapt to the processing efficiency of the sewing equipment. Summary of the invention

[0006] In view of the above problems, the present invention provides a bidirectional fully automatic production method for cushioning air-filled bags, which realizes bidirectional conveyance of inner bags and outer bags, so that the outer bags and inner bags output by an inner bag production line and an outer bag production line can correspond to two bagging stations at the same time, so that the inflatable bag blanks completed by the two bagging stations are conveyed to a sewing station for sewing of the outer bag opening, thereby achieving the purpose of adjusting the working rhythm of the bagging station and the sewing station, so that the processing efficiency of the cushioning air-filled bags is doubled without causing a substantial increase in production costs.

[0007] To achieve the above object, the present invention provides the following technical solutions: A two-way fully automatic production method for a cushioning air bag comprises the following steps: Step S1, outer bag slitting and conveying, after unwinding the rolled outer bag material roll, it is automatically slit at the slitting station to form a single, cylindrical outer bag, and the outer bag is bidirectionally conveyed through a horizontal conveyor line and conveyed to the first reversing station and the second reversing station respectively; Step S2, inner bag forming and conveying, synchronous with step S1, the first inner bag film is sequentially perforated, valved, combined with the second inner bag film, edge sealed, and cut to form a sealed inner bag with an inflation valve, and the inner bags are conveyed one by one and orderly to the first bagging station and the second bagging station through a horizontal conveyor line; Step S3, translation reversal, the outer bags located at the first reversing station and the second reversing station in step S1 are translated to the first bagging station and the second bagging station respectively, so that the tail of the inner bag is respectively arranged in one-to-one correspondence with the head of the outer bag, and the opening direction of the outer bag is adapted to the inner bag; Step S4, opening valve holes, opening holes on the upper surfaces of the outer bags located at the first bagging station and the second bagging station to form valve holes; Step S5, bagging, pulling the inner bag into the corresponding outer bag, and making the valve on the inner bag pass through the pre-opened valve hole on the outer bag, completing the bagging work of the inner bag and the outer bag to form an inflatable bag blank; Step S6, sewing, the inflatable bag blanks at the first bagging station and the second bagging station are sequentially and alternately transported to the sewing station, and the sewing equipment located on both sides of the sewing station sews the outer bag openings on the inflatable bag blanks to form a cushioning inflatable bag; Step S7, looping, the cushioning air bag at the sewing station is horizontally conveyed, and the automatic looping device located on the conveying path installs the valve cover on the inflation valve on the cushioning air bag. After the fixing work of the inflation valve and the outer bag is completed, the cushioning air bag is output.

[0008] As an improvement, in step S1 and step S2, the outer bag and the inner bag are transported in parallel upward and downward to the corresponding workstations using a double-layer horizontal conveyor line, thereby achieving a two-way conveying effect, and a switching mechanism is provided at the input end of the double-layer conveyor line, which is used to switch the outer bag or the inner bag to be transported on the upper or lower layer of the double-layer horizontal conveyor line.

[0009] In the present application, the conveying method of the outer bag and the inner bag is not limited to the upper and lower parallel conveying method of the double-layer horizontal conveyor line. The conveying method of the outer bag and the inner bag can also be carried out by two groups of left and right parallel conveying lines. Compared with the left and right parallel conveying method, the upper and lower parallel double-layer conveyor line of the present application has the advantage of small footprint and is more suitable for optimizing and improving the utilization rate of workshop space.

[0010] As an improvement, in step S1, the outer bags are transported in stacks, and each stack of outer bags contains 5-15 layers of outer bags, wherein preferably each stack of outer bags contains 10 layers of outer bags, and the 10 layers of outer bags are grabbed one by one by the reversing equipment at the first reversing station and the second reversing station for reversing to the corresponding bagging station, and cooperate with the inner bag to carry out the bagging work, thereby realizing the adjustable setting of the outer bag processing speed, so that the outer bag processing speed is adapted to the inner bag processing speed, that is, when the inner bag processing speed slows down or speeds up, it can be regulated by adjusting the stacking number of the outer bags.

[0011] As an improvement, in step S3, when the outer bag is translated and reversed, the end of the outer bag on the top layer that is not subjected to traction is adsorbed and lifted up, exposing the outer bag on the lower layer. After the outer bag on the lower layer is fixed by pressure, the outer bag on the top layer is pulled and transported to the corresponding first bagging station or the second bagging station, thereby avoiding the electrostatic effect and intermolecular force between the outer bags, which causes the outer bag on the next layer to move and be misaligned when the top outer bag is pulled, resulting in the need for large-angle and large-range correction processing during subsequent bagging.

[0012] As an improvement, in step S3, when the end of the outer bag on the top layer is adsorbed and tilted upward, the tilting direction is inclined toward the end of the outer bag that applies traction force, which can well ensure that the end of the top outer bag will not be pulled when it is adsorbed and tilted upward, reduce the deformation of the end of the outer bag, and improve the accuracy of subsequent bagging.

[0013] As an improvement, in step S3, when pressure is applied to the outer bag of the lower layer and fixed, the pressure is inclined toward the end of the top outer bag to which no traction is applied. When the pressure is applied downward, the outer bag of the lower layer will be subjected to the component of the inclined pressure, thereby achieving a smoothing effect on the outer bag of the lower layer, ensuring that the outer bag of the lower layer will not be wrinkled due to the traction of the outer bag of the top layer.

[0014] As an improvement, in step S3, when the outer bag is translated and reversed, the correction mechanism arranged at the first bagging station or the second bagging station corrects the outer bag to provide accuracy guarantee for the subsequent opening of the valve hole and avoid excessive opening deviation.

[0015] As an improvement, in step S4, when the valve hole of the outer bag is opened, a perforated bottom plate is inserted into the outer bag and cooperates with an electric curling head that is lifted and lowered above the outer bag to perform perforation processing on the upper surface of the outer bag, and the perforated bottom plate isolates and protects the lower surface of the outer bag to prevent the electric curling head from damaging the lower surface.

[0016] As an improvement, in step S5, when bagging, a valve pressing coil and a brush that can be raised and lowered are provided at the valve hole of the outer bag. The valve pressing coil presses down on the upper surface of the outer bag so that the valve passes through the valve hole. The brush combs around the valve hole to expel the gas in the outer bag, thereby preventing the gas from being retained between the interlayer of the outer bag and the inner bag during bagging, which may cause bulging in the outer bag during sewing.

[0017] As an improvement, in step S6, before the inflatable bag blank at the first bagging station or the second bagging station is transferred to the sewing station, the valve of the inflatable bag blank is subjected to a secondary valve perforation and pressing treatment. In order to avoid operational errors caused by perforation, that is, the valve is not completely penetrated during the first valve perforation and pressing treatment, a second valve perforation and pressing treatment is set to ensure that the valve penetrates the valve hole to a qualified standard before the sewing process.

[0018] The beneficial effects of the present invention are: (1) The present invention realizes that the outer bags and inner bags outputted by an inner bag production line and an outer bag production line can correspond to two bagging stations at the same time by bidirectional conveying of the inner bags and the outer bags, and the inflatable bag blanks completed by the two bagging stations are conveyed to a sewing station for sewing of the outer bag opening, so as to achieve the purpose of adjusting the working rhythm of the bagging station and the sewing station, so that the processing efficiency of the cushioning inflatable bag is increased exponentially without causing a substantial increase in production costs. In addition, each time the outer bag is conveyed, a single group stacking method is adopted, and 5-15 layers of outer bags are conveyed at the same time, so that the number of outer bags can be controlled, and the number of outer bags conveyed can be adjusted according to the inner bag forming rate, so as to maximize the processing efficiency. (2) When the outer bag is translated and reversed, the end of the outer bag on the top layer that is not subjected to traction is adsorbed and lifted up, exposing the outer bag on the lower layer. After the outer bag on the lower layer is fixed by pressure, the outer bag on the top layer is pulled and transported to the corresponding first bagging station or the second bagging station, thereby avoiding the electrostatic effect and intermolecular force between the outer bags, which causes the outer bag on the next layer to move and misalign when the top outer bag is pulled, resulting in the need for large-angle and large-range correction processing during subsequent bagging; (3) When the end of the outer bag on the top layer of the present invention is adsorbed and tilted upward, the tilting direction is inclined toward the end of the outer bag that applies traction, which can well ensure that the end of the top outer bag will not be pulled when it is adsorbed and tilted upward, reduce the deformation of the end of the outer bag, and improve the accuracy of subsequent bagging; (4) When the present invention applies pressure to the outer bag of the lower layer, the pressure is inclined toward the end of the outer bag on the top layer where no traction force is applied. When the pressure is applied downward, the outer bag of the lower layer is subjected to the component force of the inclined pressure, thereby achieving a flattening effect on the outer bag of the lower layer, ensuring that the outer bag of the lower layer will not be affected by the traction of the outer bag of the top layer and will not be wrinkled; (5) When the outer bag of the present invention is translated and reversed, the outer bag is corrected by a correction mechanism arranged at the first bagging station or the second bagging station, thereby providing accuracy guarantee for the subsequent opening of the valve hole and avoiding excessive deviation of the opening hole; (6) When the present invention is bagging, a valve pressing coil and a brush that can move up and down are provided at the valve hole of the outer bag. The valve pressing coil presses down the upper surface of the outer bag so that the valve passes through the valve hole. The brush combs around the valve hole to remove the gas in the outer bag, thereby preventing the gas from being retained between the interlayer of the outer bag and the inner bag during bagging, causing bulging of the outer bag during sewing, thereby improving the quality of the formed cushioning inflatable bag.

[0019] In summary, the present invention has the advantages of high processing efficiency, close connection of processing rhythms of various workstations, tacit cooperation, high quality of formed cushioning and inflatable bags, and low defective rate, and is particularly suitable for the field of cushioning and inflatable bag forming processing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the bidirectional fully automatic production line of the cushioning air bag of the present invention; Figure 2 This is the general assembly diagram of the outer bag cutting and conveying system for producing the cushioning air-filled bag of the present invention; Figure 3 The three-dimensional structure diagram of the outer bag shaping device of the present invention is shown in FIG. Figure 1 ; Figure 4 It is a schematic diagram of the side structure of the outer bag shaping device of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the vacuum suction cup of the present invention; Figure 6 It is a schematic diagram of the side structure of the separation suction cup of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the separation suction cup of the present invention; Figure 8 It is a schematic diagram of the lifting path of the cylinder after the outer bag is adsorbed in the present invention; Fig. 9 This is a schematic diagram of the outer bag state of the present invention; Fig.10 This is a schematic diagram of the fixed limiting state of the next layer of outer bags of the present invention; Fig.11 The three-dimensional structure diagram of the outer bag shaping device of the present invention is shown in FIG. Figure 2 ; Fig.12 for Fig.11 The enlarged structural diagram at A in the middle; Fig.13 The three-dimensional structure of the bagging equipment of the present invention is shown in FIG. Figure 1 ; Fig.14The three-dimensional structure of the bagging equipment of the present invention is shown in FIG. Figure 2 ; Fig.15 It is a schematic diagram of the three-dimensional structure of the inner bag traction device of the present invention; Fig.16 It is a schematic diagram of the three-dimensional structure of the opening device of the present invention; Fig.17 It is a schematic diagram of the three-dimensional structure of the transfer connecting line of the present invention; Fig.18 It is a schematic diagram of the three-dimensional structure of the second traction mechanism of the present invention; Fig.19 This is a schematic diagram of the transfer connecting line connecting the sewing processing line of the present invention; Fig. 20 It is a schematic diagram of the three-dimensional structure of the sewing processing line of the present invention.

[0021] In the figure: slitting station 01, first reversing station 02, second reversing station 03, first bagging station 04, second bagging station 05, sewing station 06, slitting and forming machine I, inner bag forming machine II, double-layer conveyor line III, bagging machine IV, outer bag shaping equipment 100, mounting frame 1, vacuum suction cup 12, lifting cylinder 121, first linear module 122, second linear module 123, separation suction cup 13, lifting cylinder 131, connecting piece 132, fixed shaft 133, driving piece 134, pressing plate 14, cylinder 141, pressure strip 15, pressing cylinder 151, opening device Device 2, bag lifting suction cup 21, perforated bottom plate 22, electric perm head 23, bagging equipment 200, outer bag traction equipment 3, electric slide 31, clamping claw unit 32, electric slide 31, clamping claw unit 32, opening equipment 4, inner bag traction equipment 5, pneumatic clamping claw 51, extension rod 52, belt transmission unit 53, valve pressure coil 61, brush 62, transfer connecting line 7, transverse traction module 71, first traction mechanism 711, second traction mechanism 712, longitudinal traction module 72, sewing processing line V, transmission equipment 81, sewing equipment 82, loop equipment 83, output transmission equipment 84. DETAILED DESCRIPTION

[0022] 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.

[0023] 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 limiting the present invention.

[0024] 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.

[0025] Example: like Figure 1 As shown, a bidirectional fully automatic production method of a cushioning air bag comprises the following steps: Step S1, outer bag slitting and conveying, after unwinding the rolled outer bag material roll, it is automatically slit at the slitting station 01 to form a single, cylindrical outer bag, and the outer bag is bidirectionally conveyed through a horizontal conveyor line and conveyed to the first reversing station 02 and the second reversing station 03 respectively; Step S2, inner bag forming and conveying, synchronous with step S1, the first inner bag film is successively perforated, valved, combined with the second inner bag film, edge sealed, and cut to form a sealed inner bag with an inflation valve, and the inner bags are conveyed one by one and orderly to the first bagging station 04 and the second bagging station 05 through the horizontal conveyor line; Step S3, translation reversal, the outer bags located at the first reversing station 02 and the second reversing station 03 in step S1 are translated to the first bagging station 04 and the second bagging station 05 respectively, so that the tail of the inner bag is respectively arranged in one-to-one correspondence with the head of the outer bag, and the opening direction of the outer bag is adapted to the inner bag; Step S4, opening valve holes, opening holes on the upper surfaces of the outer bags located at the first bagging station 04 and the second bagging station 05 to form valve holes; Step S5, bagging, pulling the inner bag into the corresponding outer bag, and making the valve on the inner bag pass through the pre-opened valve hole on the outer bag, completing the bagging work of the inner bag and the outer bag to form an inflatable bag blank; Step S6, sewing, the inflatable bag blanks located at the first bagging station 04 and the second bagging station 05 are sequentially and alternately transported to the sewing station 06, and the sewing equipment located on both sides of the sewing station 06 sews the outer bag openings on the inflatable bag blanks to form a cushioning inflatable bag; Step S7, looping, the cushioning air bag at the sewing station is horizontally conveyed, and the automatic looping device located on the conveying path installs the valve cover on the inflation valve on the cushioning air bag. After the fixing work of the inflation valve and the outer bag is completed, the cushioning air bag is output.

[0026] Specifically, the bidirectional fully automatic production method of the cushioning inflatable bag of the present invention is a processing method for the cushioning inflatable bag formed based on the bidirectional fully automatic production line of the cushioning inflatable bag. Specifically, the bidirectional fully automatic production line of the cushioning inflatable bag comprises a group of outer bag slitting and forming machines I, a group of inner bag forming machines II, two groups of double-layer conveyor lines III, two groups of bagging machines IV and a group of sewing processing lines V, wherein the structure of the outer bag slitting and forming machine I comprises a group of slitting equipment, and a belt conveyor is arranged at the rear side of the slitting equipment. The conveyor and the slitting equipment are existing conventional tubular film slitting machines, that is, the rolled outer bag material roll is unwound by an unwinding roller, and then the unwound outer bag is cut to a fixed length along the width direction by a slitting knife, and the cut outer bags are laid on the belt conveyor. When the stacking number of outer bags reaches a preset value, the belt conveyor transports the outer bags to the double-layer conveyor line III on the rear side. It should be emphasized here that the outer bags are transported in stacks, and each pile of outer bags contains 5-15 layers of outer bags. The present application preferably has 10 layers of outer bags.

[0027] The working principle of the inner bag forming machine II refers to the technical solution recorded in the Chinese invention patent "An integrated molded cushioning inflatable bag and its manufacturing method" with patent application number 202410254474.2. The applicant of this patent, Shanghai Ultramate Logistics Equipment Co., Ltd., is an affiliated enterprise of the applicant of this application, Ultramate (Zhejiang) Logistics Equipment Technology Co., Ltd. In addition, the structure of the inner bag forming machine II refers to the Chinese invention patent "A cushioning inflatable bag inner bag processing equipment and processing technology" with application number 202410553526.6 applied by the applicant of this application on June 25, 2024. The structural difference of the inner bag forming machine II of this application is that no airtight detection mechanism is adopted. Therefore, the structures of the outer bag slitting and forming machine I and the inner bag forming machine II are not repeated here.

[0028] In addition, the structure of the double-layer conveyor line III for double-layer horizontal transportation of outer bags and inner bags used in steps S1 and S2 refers to the patented technical solution of a dual-path transmission platform for the outer bag body of a buffer inflatable bag with patent application number 202320701347.3 applied for by Shanghai Automate Logistics Equipment Co., Ltd. on April 3, 2023. Therefore, the specific structure of the double-layer conveyor line III will not be repeated here.

[0029] like Figures 2 to 16 As shown, what needs to be emphasized in the present application is that the bagging machine IV includes an outer bag shaping device 100 and a bagging device 200, wherein the outer bag shaping device 100 is located between the first reversing station 02 and the first bagging station 04, and between the second reversing station 03 and the second bagging station 05, and the bagging device 200 is located at the first bagging station 04 and the second bagging station 05.

[0030] Specifically, the outer bag shaping equipment 100 includes a mounting frame 1, and the mounting frame 1 is located directly above the first reversing station 02 and the second reversing station 03, and is respectively installed with a vacuum suction cup 12, a separation suction cup 13, a pressure plate 14 and a pressure strip 15, wherein the vacuum suction cup 12 is lifted and moved in the vertical direction by a lifting cylinder 121, and at the same time, the vacuum suction cup 12 is pulled and moved in the width direction of the outer bag by a first linear module 122, and is pulled and moved upward at the opening of the outer bag by a second linear module 123 for correction (that is, as stated in the present application, in step S3, when the outer bag is translated and reversed, the outer bag is corrected by a correction mechanism arranged at the first bagging station or the second bagging station). Initially, the vacuum suction cup 12 is located on the side of the outer bag close to the first bagging station 04 or the second bagging station 05.

[0031] The separation suction cup 13 drives the end of the outer bag that is not attracted by the vacuum suction cup 12 to lift up through the lifting cylinder 131, and the lifting cylinder 131 is installed at the bottom of the connecting piece 132. An adjusting cylinder 135 is arranged between the lifting cylinder 131 and the connecting piece 132. A fixed shaft 133 that limits its freedom is penetrated in the middle of the connecting piece 132. The fixed shaft 133 is installed on the mounting frame 1, and the upper part of the connecting piece 132 is driven by the driving piece 134 to rotate and swing around the fixed shaft. Initially, The separation suction cup 13 is tilted toward the end of the outer bag that is not pulled and adsorbed. At this time, it is convenient for the outer bag pile (10 layers of stacked outer bags) to be transported to the first reversing station 02 or the second reversing station 03. When the outer bag pile is transported there, the driving member 134 pulls the connecting member 132 to rotate and swing around the fixed axis 133, so that the separation suction cup 13 swings to tilt toward the end of the outer bag that is not pulled and adsorbed. Then, the separation suction cup 13 is lowered by the lifting cylinder 131 to adsorb the outer bag on the top. After the adsorption is completed, the lifting cylinder 131 reaches the separation suction cup 13 and lifts it, so that the outer bag is tilted (at this time, the pressing plate 14 has applied pressure F1 to the outer bag pile through the drive of the cylinder 141). At the same time, the pressure strip 15 installed on the other side of the connecting piece 132 is driven by the pressing cylinder 151 to complete the downward pressing action on the end of the exposed outer bag of the next layer, and exerts pressure F2 to complete the position limiting of the outer bag of the next layer. After that, the separation suction cup 13 stops adsorption, the pressing plate 14 is lifted, and the vacuum suction cup 1 The outer bag at the top is pulled away from the outer bag pile and transferred to the first bagging station 04 or the second bagging station 05 by the first linear module 122, and at the same time, the outer bags of the next layer remain motionless (that is, in step S3 mentioned in the present application, when the outer bags are translated and reversed, the end of the outer bag at the top layer that is not subjected to traction is adsorbed and tilted upward to expose the outer bags at the lower layer. After the outer bags at the lower layer are fixed by pressure, the outer bags at the top layer are pulled and transported to the corresponding first bagging station or the second bagging station).

[0032] like Figures 6 to 10As shown, it should be emphasized here that the lifting direction of the separation suction cup 13 driven by the lifting cylinder 131 is set at an angle α with the outer bag 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 132 pulled by the driving member 134. 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 13 on the outer bag will be greatly reduced after it is lowered (due to the existence of the angle α, when the separation suction cup 13 contacts the outer bag, a situation of one side contacting first will be formed, but due to The separation suction cup has its own flexibility. When α is less than a certain angle, the separation suction cup 13 can still form adsorption on the outer bag. When it is greater than 85°, when the separation suction cup 3 adsorbs the outer bag and lifts it, the outer bag distance between the separation suction cup 13 and the pressing plate 14 will change from large to small and then to large. Specifically, the position where the separation suction cup 13 adsorbs the outer bag is point E, the position where the separation suction cup 13 drives the outer bag to lift is point F, and the position where the pressing plate 14 presses the outer bag down is point G. Then, points E, F, and G form a triangle. In order to avoid pulling during the lifting process of the end of the outer bag, EG=FG, EF is the stroke of the lifting cylinder 131, and the preset minimum value of the lifting cylinder 131 is 10 cm (if the stroke is too small, the D end of the outer bag will not be lifted up high enough, and the end of the next layer of outer bag cannot be exposed). Since EG = cotα*(1 / 2*EF), cot5°≈11.43, cot10°≈5.67, EG is 28.35-57.15cm. The greater the stroke of the lifting cylinder, the longer the length of EG. The relationship between the offset distance H of the pressing plate 14 from the edge of the outer bag and the width L of the outer bag satisfies: 1 / 3*L≤H<1 / 2*L (here it is limited that the downward pressing position of the pressing plate 14 on the outer bag cannot be too far from the edge of the outer bag. Once the position is too far, the separation suction cup 13 grabs the end of the outer bag and lifts it up, and the top The separation range between the outer bag and the adjacent outer bag below will be greatly increased, and the influence of the corresponding electrostatic effect and intermolecular force will also be greatly increased. Therefore, the downward pressing position of the pressure plate 14 on the outer bag cannot be too far away from the raised end of the outer bag). Therefore, it is not difficult to infer that in this case, the width L of the outer bag is already between 56cm-170cm, and if the stroke of the lifting cylinder 31 is further expanded, the width L of the outer bag will also be further expanded. Therefore, the inclination angle of the lifting cylinder α is limited to between 80-85° (that is, as stated in the present application, in step S3, when the end of the outer bag on the top layer is adsorbed and lifted up, its lifting direction is inclined toward the end of the outer bag that applies traction). It is necessary to ensure the width of the buffer inflatable bag suitable for production, while also ensuring the adsorption performance of the separation suction cup 13 on the outer bag.

[0033] In addition, the length S1 of the pressing plate 14 and the length S2 of the outer bag adsorbed by the separation suction cup 13 satisfy: S1>S2.

[0034] It should be noted that, what is limited here is that the contact surface between the pressure plate 14 of the present application and the outer bag is larger than the contact surface of the separation suction cup 13 adsorbing the outer bag, so that the separation suction cup 13 can overcome the smallest electrostatic effect and intermolecular force as much as possible, thereby achieving the effect of lifting the outer bag.

[0035] Furthermore, the inclination angle of the pressure strip 15 when pressing downward is consistent with the descending inclination angle of the separation suction cup 13, so that while the pressure strip 15 forms a downward pressure on the outer bag of the next layer, the pressure strip 15 will also form a horizontal component force in the wide direction of the outer bag, so that the exposed end of the outer bag of the next layer is smoothed (that is, as stated in the present application, in the step S3, when pressure is applied to the outer bag of the lower layer for fixing, the pressure is inclined toward the end of the top outer bag on which no traction force is applied).

[0036] Furthermore, a hole-opening device 2 for the valve hole on the outer bag is further provided on the mounting frame 1 at a position between the first reversing station and the first bagging station and at a position between the second reversing station and the second bagging station. The hole-opening device 2 includes a bag-lifting suction cup 21, a hole-opening bottom plate 22 and an electric perm head 23. The bag-lifting suction cup 21 is provided with two groups, which are respectively provided at the upper and lower parts of the outer bag conveying path. The bag-lifting suction cup 21 is set to be lifted and lowered, and cooperates with each other to open the opening of the outer bag, while the hole-opening bottom plate 22 is driven to rotate and swing by a rotating driving device (rotating cylinder). After the opening of the outer bag is opened, the hole-opening bottom plate 22 is rotated and swung to be inserted into the outer bag. At this time, the electric perm head 23 is driven by the lifting device (cylinder) to cooperate with the hole-opening bottom plate 22 to open a valve hole ( That is, in the step S4 mentioned in the present application, when the valve hole of the outer bag is opened, a hole-opening bottom plate is inserted into the outer bag and cooperates with the electric iron head set to rise and fall above the outer bag to perform ironing processing on the upper surface of the outer bag). It should be emphasized here that the valve hole opening step is set here because the vacuum suction cup 12 has a correction function, which can position the edge of the outer bag (the positioning method is to sense the edge of the outer bag through a photoelectric sensor. When the photoelectric sensor cannot sense the edge of the outer bag, the vacuum suction cup 12 drives the outer bag to move for correction, and when the photoelectric sensor senses the edge of the outer bag, the vacuum suction cup 12 only drives the outer bag to move for traction). After the outer bag is positioned, the position accuracy of the valve hole and the coordination accuracy of the valve position on the inner bag are greatly improved.

[0037] It should also be noted that the bagging equipment 200 includes an outer bag traction device 3, an opening device 4 and an inner bag traction device 5 arranged at the first bagging station and the second bagging station, wherein the outer bag traction device 3 is arranged along the width direction of the outer bag, and the outer bag traction device 3 grabs and pulls the outer bag adsorbed by the vacuum suction cup 12 to the first bagging station or the second bagging station, and the outer bag traction device 3 is composed of two groups of electric slides 31 and two groups of clamping claw units 32, the electric slides 31 and the clamping claw units 32 are arranged in a one-to-one correspondence, and the outer bag traction device 3 is arranged below the first bagging station or the second bagging station, and two groups of opening devices 4 are provided, the opening devices 4 are arranged parallel to the electric slides 31, and the structure of the opening device 4 is similar to that of the bag lifting suction cup 21, both of which are through The suction cup absorbs the surface layers at both ends of the outer bag opening to separate them, thereby opening the outer bag opening. The inner bag traction device 5 is opposite to the feeding direction of the inner bag conveyed to the first bagging station or the second bagging station, and is arranged on the other side of the first bagging station or the second bagging station. The inner bag traction device 5 includes a pneumatic clamp 51, an extension rod 52 and a belt conveyor unit 53. After the opening device 4 opens the outer bag located at the first bagging station or the second bagging station, the belt conveyor unit 53 drives the extension rod 52 to be inserted into the outer bag until the pneumatic clamp 51 arranged at the end of the extension rod 52 extends out of the outer bag and grabs the inner bag. Then the belt conveyor unit 53 drives the extension rod 52 to withdraw the extension rod 52 from the outer bag and bring the inner bag into the outer bag at the same time, thereby realizing the bagging work of the outer bag and the inner bag.

[0038] When the outer bag and the inner bag are bagged, the valve pressing coil 61 and the brush 62 located at the position opposite to the valve hole at the first bagging station or the second bagging station descend, and the valve pressing coil 61 presses down to make the upper surface layer of the outer bag descend (because the upper surface layer was lifted up when opening the bag before, the opening device 4 has stopped working at this time), so that the valve of the inner bag passes through the valve hole of the outer bag, and the brush 62 descends, so that the gas entering the outer bag when the valve is penetrated can be discharged, so as to avoid bulging of the outer bag during subsequent suturing (that is, in the step S5 mentioned in the present application, when bagging, the valve hole of the outer bag is provided with a lifting and moving valve pressing coil and brush, the valve pressing coil presses down the upper surface layer of the outer bag, so that the valve passes through the valve hole, and the brush combs around the valve hole to remove the gas in the outer bag).

[0039] like Figures 17 to 19As shown, the bagging device 200 also includes a transfer connection line 7 connected to the sewing processing line V, and the transfer connection line 7 is L-shaped. The transfer connection line 7 includes a group of transverse traction modules 71 and a group of longitudinal traction modules 72, wherein the transverse traction module 71 includes a first traction mechanism 711 consistent with the structure of the outer bag traction device 3 and a second traction mechanism 712 similar to the structure of the inner bag traction device 5, wherein the second traction mechanism 712 is located at the connection position between the transverse traction module 71 and the longitudinal traction module 72, and the longitudinal traction module 72 is a rotary conveyor belt, and the transfer connecting line 7 transfers the completed inflatable bag blank to the sewing station, and a number of brushes with the same structure as the brush 62 are arranged on the transfer path of the inflatable bag blank. These brushes brush the inflatable bag blank so that the valve on the inner bag completely passes through the valve hole of the outer bag, and the gas in the outer bag is completely discharged (that is, in step S6 described in the present application, before the inflatable bag blank at the first bagging station or the second bagging station is transferred to the sewing station, the valve of the inflatable bag blank is subjected to a secondary valve perforation and pressing treatment).

[0040] like Fig. 20 As shown, the sewing processing line V includes a conveying device 81, a sewing device 82, a loop device 83 and an output conveying device 84, wherein the structure of the conveying device 81 is similar to the structure of the lateral traction module 71, and its specific structure is not repeated here. The structure of the sewing device 82 refers to the structure of a double-sided synchronous sewing device for producing a cushioning inflatable bag recorded in the Chinese patent with patent application number 202120644481.5, and its specific structure is not repeated here. The structure of the loop device 83 refers to the structure of a valve sleeve grasping device for a cushioning inflatable bag recorded in the Chinese patent with patent application number 202321895633.4, and the structure of a valve sleeve conveying device for a cushioning inflatable bag recorded in the Chinese patent with patent application number 202321883861.X, and its specific structure is not repeated here. The output conveying device 84 is also composed of a conveying structure composed of a rotating belt conveyor and a pneumatic clamp.

[0041] 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 two-way fully automatic production method for cushioning air bags, characterized in that: The following steps are involved: Step S1, outer bag slitting and conveying, after unwinding the rolled outer bag material roll, it is automatically slit at the slitting station to form a single, cylindrical outer bag, and the outer bag is bidirectionally conveyed through a horizontal conveyor line and conveyed to the first reversing station and the second reversing station respectively; Step S2, inner bag forming and conveying, synchronous with step S1, the first inner bag film is sequentially perforated, valved, combined with the second inner bag film, edge sealed, and cut to form a sealed inner bag with an inflation valve, and the inner bags are conveyed one by one and orderly to the first bagging station and the second bagging station through a horizontal conveyor line; Step S3, translation reversal, the outer bags located at the first reversing station and the second reversing station in step S1 are translated to the first bagging station and the second bagging station respectively, so that the tail of the inner bag is respectively arranged in one-to-one correspondence with the head of the outer bag, and the opening direction of the outer bag is adapted to the inner bag; Step S4, opening valve holes, opening holes on the upper surfaces of the outer bags located at the first bagging station and the second bagging station to form valve holes; Step S5, bagging, pulling the inner bag into the corresponding outer bag, and making the valve on the inner bag pass through the pre-opened valve hole on the outer bag, completing the bagging work of the inner bag and the outer bag to form an inflatable bag blank; Step S6, sewing, the inflatable bag blanks at the first bagging station and the second bagging station are sequentially and alternately transported to the sewing station, and the sewing equipment located on both sides of the sewing station sews the outer bag openings on the inflatable bag blanks to form a cushioning inflatable bag; Step S7, looping, the cushioning air bag at the sewing station is horizontally conveyed, and the automatic looping device located on the conveying path installs the valve cover on the inflation valve on the cushioning air bag. After the fixing work of the inflation valve and the outer bag is completed, the cushioning air bag is output.

2. A two-way fully automatic production method for a cushioning air bag according to claim 1, characterized in that: In step S1 and step S2, both the outer bag and the inner bag are transported in parallel upward and downward to the corresponding workstations using a double-layer horizontal conveyor line, and a switching mechanism is provided at the input end of the double-layer conveyor line, which is used to switch the outer bag or the inner bag to be transported on the upper or lower layer of the double-layer horizontal conveyor line.

3. A two-way fully automatic production method for a cushioning air bag according to claim 1, characterized in that: In the step S1, the outer bags are transported in a stacked state, and each stack of outer bags contains 5-15 layers of outer bags.

4. A two-way fully automatic production method for a cushioning air bag according to claim 3, characterized in that: In step S3, when the outer bag is translated and reversed, the end of the outer bag on the top layer that is not subjected to traction is adsorbed and lifted up to expose the outer bag on the lower layer. After the outer bag on the lower layer is fixed by pressure, the outer bag on the top layer is pulled and transported to the corresponding first bagging station or the second bagging station.

5. A two-way fully automatic production method for a cushioning air bag according to claim 4, characterized in that: In step S3, when the end of the outer bag located at the top layer is adsorbed and tilted upward, the tilting direction thereof is inclined toward the end of the outer bag that exerts the traction force.

6. A two-way fully automatic production method for a cushioning air bag according to claim 4, characterized in that: In step S3, when pressure is applied to fix the outer bag of the lower layer, the pressure is inclined toward the end of the top outer bag to which no traction force is applied.

7. A two-way fully automatic production method for a cushioning air bag according to claim 1, characterized in that: In the step S3, when the outer bag is shifted and reversed, the deviation correction mechanism arranged at the first bagging station or the second bagging station performs deviation correction processing on the outer bag.

8. The bidirectional fully automatic production method of a cushioning air bag according to claim 1, characterized in that: In step S4, when the valve hole is opened in the outer bag, a perforated bottom plate is inserted into the outer bag and cooperates with an electric perm head which is lifted and lowered above the outer bag to perform perforation processing on the upper surface of the outer bag.

9. A two-way fully automatic production method for a cushioning airbag according to claim 1, characterized in that: In step S5, when bagging, a valve pressing coil and a brush that can move up and down are provided at the valve hole of the outer bag. The valve pressing coil presses down the upper surface of the outer bag so that the valve passes through the valve hole, and the brush combs around the valve hole to remove the gas in the outer bag.

10. The bidirectional fully automatic production method of a cushioning air bag according to claim 1, characterized in that: In the step S6, before the inflated bag blank at the first bagging station or the second bagging station is transferred to the sewing station, the valve of the inflated bag blank is subjected to a secondary valve perforation and pressing treatment.

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