A cushioned airbag and method of manufacture

Abstract

The present application relates to the technical field of new buffer air bag, and particularly relates to a buffer air bag and a processing method, the buffer air bag comprising: an outer bag, an inner bag and an inflation valve; the outer bag is a woven bag structure, the inner bag is a sealed bag structure, the inner bag is inserted into the outer bag, and the four edges of the outer bag and the inner bag are sealed, and the four corners or four sides of the outer bag are connected with a binding belt, so that the buffer air bag can be directly bound and fixed, and the processing method comprises the following steps: outer bag cutting, inner bag preloading, inner and outer bag fitting, reversing and correcting, sewing and sealing, buckling and connecting the binding belt, wherein the reversing and correcting comprises: bag clamping, traction detection and correcting, when correcting the fitted outer bag, the original traction correction mode is changed to traction and offset bidirectional correction, so that the corrected outer bag is still flat.

Description

Technical Field

[0001] This invention relates to the field of novel cushioning inflatable bags, and particularly to a cushioning inflatable bag and its processing method. Background Technology

[0002] Bubble wraps, also known as cushioning bags or air cushion packaging, are commonly used to wrap and protect goods during transport, preventing damage from impacts or pressure. These inflatable bags are an effective packaging material, primarily used to protect electronics, ceramics, glassware, and other fragile items. Generally, bubble wraps are made from multi-layer co-extruded film or polyethylene film. These materials have good elasticity and tear resistance. Bubble wraps inflate to form air cushions that absorb and disperse impact forces, protecting the contents from shocks and vibrations. Furthermore, many bubble wraps are designed using environmentally friendly, recyclable materials, helping to reduce environmental pollution.

[0003] Furthermore, air bags can be customized in different sizes, shapes, and thicknesses to suit the protection needs of various products. Due to their lightweight nature and ability to be fully folded before use, air bags take up little space during storage and transportation, making them ideal for the e-commerce industry. Compared to other protective materials, air bags offer a cost-effective solution as they are extremely effective at reducing the risk of product damage.

[0004] Chinese patent application number 201520086434.8 discloses a novel cushioning inflatable bag. The key technical point is that the bag includes a bag body and a one-way valve mounted on the bag body. The bag body comprises an upper film and a lower film, which are heat-sealed together to form an air cavity. Both the upper and lower films are covered with an outer protective layer. The one-way valve extends beyond the outer protective layer, and a cushioning cavity is formed between the outer protective layer and the bag body. This cushioning inflatable bag, while cushioning the vibration of shifting goods, also prevents sharp objects from tearing the bag, thus ensuring its cushioning effect.

[0005] However, according to the applicant, when existing cushioning air bags are used in logistics transportation, especially in container transportation, they are not secured, and when the container door is opened, the cushioning air bags used to cushion the container door will fall directly off.

[0006] Regarding the processing of the cushioning inflatable bag, the applicant's Shanghai parent company has already filed Chinese patent application number 202320701347.3, which discloses the cutting and processing of the outer bag; it has also filed Chinese patent application number 201821709833.5, which discloses the opening and processing of the outer bag; in addition, it has filed Chinese patent applications number 202120644481.5 and 202023302793.2, which respectively disclose the sewing of the openings at both ends of the outer bag of the cushioning inflatable bag and the automatic fitting of the outer bag and the inner bag.

[0007] However, according to the applicant's description, such as Figure 1 As shown, after the outer bag and inner bag are fitted together, when sewing the openings at both ends of the outer bag, there is a situation where the openings at both ends of the outer bag are not flush with the sewing equipment, resulting in uneven sewing of the outer bag ends. Therefore, it is necessary to correct the deviation of the fitted outer bag before sewing the opening of the outer bag. However, the existing deviation correction mechanism will cause wrinkles to appear on the originally flat outer bag after correction, which will also affect the quality of the opening sewing. Summary of the Invention

[0008] To address the above problems, this invention provides a cushioning inflatable bag and its processing method. By connecting straps to the four corners or four sides of the outer bag on the basis of the existing cushioning inflatable bag, the cushioning inflatable bag can be directly tied and fixed, thereby preventing the cushioning inflatable bag from falling directly. At the same time, when processing the cushioning inflatable bag, the correction of the completed outer bag is changed from the original traction correction method to a two-way correction of traction and offset, so that the outer bag remains flat after correction, thus improving the processing quality of the cushioning inflatable bag.

[0009] To achieve the above objectives, the present invention provides the following technical solution:

[0010] A cushioning inflatable bag, comprising:

[0011] Outer bag, inner bag, and inflation valve;

[0012] The outer bag is a woven bag structure, the inner bag is a sealed bag structure, the inner bag is inserted into the outer bag, and the four sides of the outer bag and the inner bag are sealed, and the four corners or four sides of the outer bag are connected with straps.

[0013] The inflation valve includes a valve core and a valve cover. The valve core is installed on the inner bag and has a one-way valve structure. The valve nozzle of the valve core extends outward through the outer bag. The valve cover is located outside the outer bag and is used to seal the valve nozzle of the valve core.

[0014] Furthermore, the present invention also provides a method for processing the above-mentioned cushioning air bag, comprising the following steps:

[0015] Step 1: Cut the outer bag. Cut the rolled-up tubular outer bag into sections to obtain a fixed length outer bag with open ends. Make mounting holes for the inflation valve on the outer bag.

[0016] Step 2: Pre-installation of the inner bag. Simultaneously with Step 1, an installation hole is made in the inner bag, and the valve core of the inflation valve is pre-installed in the installation hole.

[0017] Step 3: Fit the inner and outer bags together. Fit the outer bag obtained in Step 1 and the inner bag obtained in Step 2 together, so that the valve core on the inner bag passes through the mounting hole to form an inflatable bag blank.

[0018] Step 4: Reversal and Correction. The inflatable bag blank obtained in Step 3 is reversed via a 90° vertical conveyor line, so that the openings at both ends of the outer bag are located on both sides of the conveyor line. The inflatable bag blank is then corrected by a correction mechanism located below the conveyor line. The correction process includes the following steps:

[0019] Step a, clamping the bag: Two sets of grippers on the correction mechanism located below the conveyor line clamp one side of the inflatable bag blank after it has completed a 90° reversal.

[0020] Step b, traction detection: The grippers clamping the inflatable bag blank are moved by the corresponding linear modules below, pulling the inflatable bag blank towards the photoelectric sensor. Two sets of photoelectric sensors are arranged along the width of the conveyor line, and each photoelectric sensor is corresponding to one of the grippers. When the photoelectric sensor on either side detects the inflatable bag blank, both sets of grippers stop moving. If both sets of photoelectric sensors detect the inflatable bag blank at the same time, step c is skipped.

[0021] Step c, correction: where the photoelectric sensor does not detect the gripper on one side of the inflatable bag blank, the gripper moves forward again to pull the inflatable bag blank on that side until it is detected by the photoelectric sensor. Simultaneously, the gripper on the other side moves along the width of the conveyor line, away from the gripper on the opposite side, so that the side of the inflatable bag blank that is clamped by the gripper is straightened again.

[0022] Step 5: Sewing and sealing. After the correction process is completed, the inflatable bag blank is sewn together at the end openings by a sewing mechanism installed on both sides of the conveyor line to form an inflatable bag.

[0023] Step 6: Covering and fastening. After the sewing process is completed, the inflatable bag is gripped by a robotic arm installed on one side of the conveyor line and the valve cover is pressed onto the valve nozzle of the valve core.

[0024] Step 7: Connect the straps. After the inflatable bag is capped, sew straps to the four corners or four sides. After the straps are connected, the bag is taken off the production line.

[0025] As an improvement, in step c, the gripper that moves and pulls the inflatable bag blank is driven to move the gripper on the other side along the width direction of the conveyor line by the squeezing and abutting cooperation between the guide block and the push rod.

[0026] The guide block is installed and connected to any one set of the grippers, and the push rod is installed on another set of the grippers.

[0027] As an improvement, the sidewall of the guide block that engages with the push rod in a squeezing and abutting manner is arc-shaped, and the arc protrusion distance of the arc-shaped sidewall of the guide block gradually increases along the traction movement direction of the inflatable bag blank.

[0028] As an improvement, the arc-shaped protrusion distance from the contact point A between the guide block and the push rod to the bottom edge B of the guide block is L1, the distance of the push rod is L2, and the angle between the line connecting the photoelectric sensor and the side of the inflatable bag blank that is clamped is α. L1, L2 and α satisfy the relationship L1=L2 / COSα-L2.

[0029] As an improvement, the gripper moves in the width direction of the conveyor line via a sliding unit provided below. The sliding unit includes a base, a slide rail, and a slider. The base is mounted on the linear module and is driven to move by the linear module.

[0030] The slide rail is horizontally mounted on the base and is arranged along the width direction of the conveyor line;

[0031] The slider is mounted on the bottom of the gripper, and the gripper is moved along the slide rail via the slider.

[0032] As an improvement, a return spring is installed between the base and the gripper, which drives the gripper, which has been adjusted by moving along the slide rail, to return to its original position.

[0033] As an improvement, an electromagnetic adsorption element is installed on the base to adsorb and fix the gripper. A photoelectric sensor switch is provided at the starting end of the guide block. When the photoelectric sensor switch contacts the push rod, it controls the electromagnetic adsorption element to turn on and off.

[0034] As an improvement, a limiting rod is installed on the base, which abuts against the gripper to prevent the gripper from disengaging from the slide rail.

[0035] As an improvement, the gripper includes a gripper seat, a gripper jaw, a gripper gear, a gripper cylinder, and a gripper rack;

[0036] The gripper seat is square-shaped and is movable via the sliding unit.

[0037] The clamping claw is rotatably mounted on the clamping claw seat. The clamping claw is equipped with rollers for clamping the inflatable bag blank, and the top of the clamping claw seat is provided with a buffer pad that corresponds to and cooperates with the rollers.

[0038] The gripper gear is sleeved on the flipping shaft of the gripper;

[0039] The gripper cylinder is installed below the gripper. The gripper cylinder drives the gripper rack and the gripper gear to engage, causing the gripper to flip and rotate.

[0040] The beneficial effects of this invention are as follows:

[0041] (1) This invention discloses a cushioning air bag. By connecting the cushioning air bag with strapping, the cushioning air bag can be directly tied and fixed by the strapping during use, so as to prevent the cushioning air bag from falling off and optimize the use of the cushioning air bag.

[0042] (2) In this invention, the strapping is set as a hook and loop fastener structure and the strapping is set as a hook and loop fastener mother tape. At the same time, a hook and loop fastener daughter tape is set on the cushioning air bag so that when the strapping is not in use, it can be directly attached to the hook and loop fastener daughter tape for storage. The structure is simple.

[0043] (3) By improving the existing processing method of the cushioning air bag, the air bag blank can be kept straight during the correction process and will not wrinkle. This allows the openings at both ends of the air bag blank to be kept level with the sewing machine for sewing, thus improving the quality of the opening sewing seal.

[0044] (4) The present invention enables the two sets of grippers that correct the inflatable bag blank to cooperate with each other during the correction process, so that the inflatable bag blank can simultaneously perform the two correction tasks of correction and straightening at one time. Moreover, regardless of which side of the gripper causes the inflatable bag blank to wrinkle, the other side of the gripper can automatically adapt and adjust, and the correction is accurate.

[0045] (5) Through the cooperation of the guide block and the push rod, the present invention can correct the inflatable bag blank at any tilt angle during the correction process, while making the inflatable bag blank straight. It covers the correction work of inflatable bag blanks with various tilt angles. There is no need for manual adjustment or measurement and reading of the tilt angle of the inflatable bag blank. The structure is stable and reliable, and the production cost is low.

[0046] In summary, the present invention has the advantages of stable cushioning air bag structure, diverse functions, high processing quality, and good sealing effect, and is especially suitable for the field of cushioning air bag structure and processing technology. Attached Figure Description

[0047] Figure 1 This is a schematic diagram of the current correction status;

[0048] Figure 2 This is a top view of the structure of the cushioning inflatable bag of the present invention;

[0049] Figure 3 This is a cross-sectional view of the inflation valve of the present invention;

[0050] Figure 4 This is a schematic diagram of the state before correction according to the present invention;

[0051] Figure 5 This is a schematic diagram of the state after correction according to the present invention;

[0052] Figure 6 This is a diagram illustrating a state where correction is impossible.

[0053] Figure 7 This is a three-dimensional schematic diagram of the cushioning air bag processing equipment of the present invention;

[0054] Figure 8 This is a three-dimensional structural diagram of the correction mechanism of the present invention;

[0055] Figure 9 This is a partial structural diagram of the correction mechanism of the present invention;

[0056] Figure 10 for Figure 9 Enlarged structural diagram at point D;

[0057] Figure 11 This is a schematic cross-sectional view of the guide block structure of the present invention;

[0058] Figure 12 This is a schematic diagram of the three-dimensional structure of the guide block of the present invention;

[0059] Figure 13 This is a side view of the gripper structure of the present invention;

[0060] Figure 14 This is a schematic cross-sectional view of the gripper structure of the present invention.

[0061] In the diagram: 1. Outer bag, 10. Strapping strap, 11. Mounting outer hole, 2. Inner bag, 21. Mounting inner hole, 3. Inflation valve, 31. Valve core, 32. Valve cover, 4. Inflatable bag blank, 5. Correction mechanism, 50. Photoelectric sensor, 51. Gripper, 511. Gripper seat, 512. Clamping gripper, 513. Gripper gear, 514. Gripper cylinder, 515. Gripper rack, 516. Roller, 517. Buffer pad, 52. Linear module, 53. Guide block, 54. Push rod, 56. Sliding unit, 561. Base, 562. Slide rail, 563. Slider, 564. Return spring, 565. Electromagnetic adsorption element, 566. Photoelectric sensor switch, 567. Limit rod, 6. Sewing mechanism, 7. Robot arm. Detailed Implementation

[0062] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0063] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0064] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0065] Example 1:

[0066] like Figures 1 to 7 As shown, a cushioning inflatable bag includes:

[0067] Outer bag 1, inner bag 2 and inflation valve 3;

[0068] The outer bag 1 is a woven bag structure, the inner bag 2 is a sealed bag structure, the inner bag 2 is inserted into the outer bag 1, and the four sides of the outer bag 1 and the inner bag 2 are sealed, and the four corners or four sides of the outer bag 1 are connected with straps 10.

[0069] The inflation valve 3 includes a valve core 31 and a valve cover 32. The valve core 31 is installed on the inner bag 2. The valve core 31 is a one-way valve structure, and the valve nozzle of the valve core 31 extends outward through the outer bag 1. The valve cover 32 is located outside the outer bag 1 and seals the valve nozzle of the valve core 31.

[0070] It should be noted that, compared with existing cushioning air bags, the cushioning air bag of the present invention can be directly fixed to the container by means of the strapping strap 10, so that when the container is opened, the cushioning air bag will not fall off directly with the opening of the container door, but will remain fixed to the container.

[0071] Furthermore, when setting the strapping strap 10, the present invention adopts a Velcro structure for the strapping strap. One end of the Velcro main strap 101, which serves as the strapping strap, is connected to the outer bag 1 of the cushioning air bag. The Velcro sub straps 102 are sewn together on the outer bag 1 to fit the Velcro main strap 101. When the strapping strap is not in use, the Velcro main strap 101 can be directly attached to the Velcro sub straps 102, which facilitates the storage of the cushioning air bag. When needed, the Velcro main strap 101 can be directly pulled off the cushioning air bag for binding.

[0072] Example 2:

[0073] like Figures 2 to 6 As shown, referring to Embodiment 1, a method for processing a cushioning inflatable bag according to Embodiment 2 of this application includes the following steps:

[0074] Step 1: Cut the outer bag. Cut the rolled-up tubular outer bag into sections to obtain a fixed-length outer bag 1 with open ends. Make an installation hole 11 on the outer bag 1 for installing the inflation valve 3.

[0075] Step 2: Inner bag pre-installation. Simultaneously with Step 1, an installation inner hole 21 is opened on the inner bag 2, and the valve core 31 of the inflation valve 3 is pre-installed at the installation inner hole 21. The inner bag 2 can be formed by bonding two sets of parallel upper and lower films to form a tubular film through the adhesive sidewalls and then bonding the two ends to form the inner bag 2. Alternatively, a tubular film can be used directly, and then the two ends can be bonded to form the inner bag 2. The specific choice depends on the production process.

[0076] Step 3: Fit the inner and outer bags together. Fit the outer bag 1 obtained in Step 1 and the inner bag 2 obtained in Step 2 together, so that the valve core 31 on the inner bag 2 passes through the mounting hole 11 to form an inflatable bag blank 4.

[0077] Step 4: Reversal and Correction. The inflatable bag blank 4 obtained in Step 3 is reversed via a conveyor line perpendicular to 90°, so that the openings at both ends of the outer bag 1 are located on both sides of the conveyor line. The correction mechanism 5 below the conveyor line corrects the deviation of the inflatable bag blank 4. The correction process includes the following steps:

[0078] Step a, clamping the bag: the two sets of grippers 51 on the correction mechanism 5 located below the conveyor line clamp one side of the inflatable bag blank 4 after it has completed a 90° reversal.

[0079] Step b, traction detection: The grippers 51 clamping the inflatable bag blank 4 are moved by the corresponding linear modules 52 below, pulling the inflatable bag blank 4 toward the photoelectric sensor 50. Two sets of photoelectric sensors 50 are arranged along the width of the conveyor line, and each photoelectric sensor 50 is corresponding to a gripper 51. When the photoelectric sensor 50 on either side detects the inflatable bag blank 4, both sets of grippers 51 stop moving. If both sets of photoelectric sensors 50 detect the inflatable bag blank 4 at the same time, step c is skipped.

[0080] Step c, correction: where the photoelectric sensor 50 does not detect the gripper 51 on one side of the inflatable bag blank 4, it moves forward again to pull the inflatable bag blank 4 on that side until it is detected by the photoelectric sensor 50. Simultaneously, the gripper 51 on the other side moves along the width of the conveyor line, away from the gripper 51 on the opposite side, so that the side of the inflatable bag blank 4 that is clamped by the gripper 51 is straightened again.

[0081] Step 5: Sewing and sealing. After the correction process is completed, the inflatable bag blank 4 is sewn with the end openings by the sewing mechanism 6 installed on both sides of the conveyor line to form an inflatable bag 40.

[0082] Step 6: Covering and fastening. After the sewing process is completed, the inflatable bag 40 is gripped by the robot arm 7 installed on one side of the conveyor line, which presses the valve cover 32 onto the valve nozzle of the valve core 31.

[0083] Step 7: Connect the straps. After the air bag 40 is covered, sew the straps 10 to its four corners or four sides. After the straps are connected, the bag is taken off the production line.

[0084] It should be noted that in this invention, two sets of photoelectric sensors 50 are provided. These two sets of photoelectric sensors 50 are used to determine whether the inflatable bag blank 4 is tilted. The principle of determination is as follows: during the process of the gripper 51 pulling the inflatable bag blank 4 to the photoelectric sensor 50, if both sets of photoelectric sensors 50 simultaneously detect the inflatable bag blank 4, it indicates that the inflatable bag blank 4 is not tilted. If one set of photoelectric sensors 50 detects the inflatable bag blank 4 while the other set does not, then the inflatable bag blank 4 is tilted overall.

[0085] Correspondingly, two sets of grippers 51 are provided, and each set of grippers 51 is driven to move by a corresponding linear module 52. The grippers 51 clamp the side of the inflatable bag blank 4 and pull it along the guide groove opened on the conveyor line. By controlling the distance that the grippers 51 pull the inflatable bag blank 4, the deviation of the inflatable bag blank 4 can be corrected. The difference between the present invention and the existing deviation correction method is that when the inflatable bag blank 4 is corrected, the grippers 51 that are already in place will not be displaced in the traction direction. Instead, another set of grippers that are not detected by the photoelectric sensor 50 will continue to pull the inflatable bag blank 4 on that side to move, so that the inflatable bag blank 4 is also detected by the photoelectric sensor 50. At the same time, the grippers that are already in place will be adjusted in the width direction of the conveyor line, so that the wrinkles of the inflatable bag blank 4 caused by the change in the distance between the grippers 51 are eliminated, thereby completing the deviation correction of the inflatable bag blank 4.

[0086] To further explain, if the direction in which the gripper 51 pulls the inflatable bag blank 4 is taken as the X-axis and the width direction of the conveyor line is taken as the Y-axis, then when correcting the inflatable bag blank 4, the gripper 51 that is not sensed by the photoelectric sensor 50 will move in the X-axis direction to continue pulling the inflatable bag blank 4, while the gripper 51 that has been sensed by the photoelectric sensor 50 will move in the Y-axis direction to eliminate wrinkles.

[0087] Furthermore, it should be noted that the sewing mechanism 6 and the robotic arm 7 have already been disclosed in corresponding patent applications filed by the applicant's Shanghai parent company (Shanghai Aotemate Logistics Equipment Co., Ltd.) regarding the cutting and opening of the outer bag, the opening of the inner bag, and the mounting of the valve core. Therefore, the specific structure will not be described in detail here.

[0088] Example 3:

[0089] like Figures 6 to 12 As shown, the difference between Embodiment 3 and Embodiment 2 of this application, as described with reference to Embodiment 2, lies in the following:

[0090] Specifically, in step c, the gripper 51 that moves and pulls the inflatable bag blank 4 is driven to move along the width direction of the conveyor line by the squeezing and abutting cooperation between the guide block 53 and the push rod 54.

[0091] The guide block 53 is installed and connected to any one of the grippers 51, and the push rod 54 is installed on another set of grippers 51.

[0092] Furthermore, the sidewall of the guide block 53 that engages with the push rod 54 in a squeezing and abutting manner is arc-shaped, and the arc protrusion distance of the arc-shaped sidewall of the guide block 53 gradually increases along the traction movement direction of the inflatable bag blank 4.

[0093] Furthermore, the arc-shaped protrusion distance from the contact point A between the guide block 53 and the push rod 54 to the bottom edge B of the guide block 53 is L1, the distance of the push rod 54 is L2, and the angle between the line connecting the photoelectric sensor 50 and the side of the inflatable bag blank 4 that is clamped is α. L1, L2 and α satisfy the relationship L1=L2 / COSα-L2.

[0094] In addition, the gripper 51 moves in the width direction of the conveyor line via the sliding unit 56 provided below. The sliding unit 56 includes a base 561, a slide rail 562 and a slider 563. The base 561 is mounted on the linear module 52 and is driven to move by the linear module 52.

[0095] The slide rail 562 is horizontally mounted on the base 561, and the slide rail 562 is arranged along the width direction of the conveyor line;

[0096] The slider 563 is mounted on the bottom of the gripper 51, and the gripper 51 is moved along the slide rail 562 via the slider 563.

[0097] It should be noted that in this invention, the guide block 53 and the push rod 54 are arranged between two sets of grippers 51, and there are two sets of guide blocks 53 and push rods 54. The two sets of guide blocks 53 are respectively arranged on the corresponding grippers 51, and the two sets of push rods 54 are also arranged one-to-one with the guide blocks 53. The push rods 54 are also respectively arranged on the corresponding grippers 51. One end of the push rod 54 is connected to the gripper 51, and the other end of the push rod 54 is engaged with the corresponding guide block 53. The end of the push rod 54 that engages with the guide block 53 is provided with a roller.

[0098] Therefore, regardless of which set of grippers 51 needs to pull the inflatable bag blank 4 for correction, the corresponding gripper 51 on the opposite side will move accordingly in the width direction of the conveyor line to compensate for the change in distance between the grippers 51 and avoid wrinkles in the inflatable bag blank 4 between the grippers 51.

[0099] Furthermore, when one set of grippers 51 pulls the inflatable bag blank 4 to move, the cooperation between the push rod 54 and the guide block 53 will drive the gripper 51 on the other side to move in the width direction of the conveyor line through the sliding unit 56 set below. It should be noted that the arc shape of the side where the guide block 53 cooperates with the push rod 54 is specially designed, that is, the arc shape needs to be set according to the relationship L1=L2 / COSα-L2. The principle of this setting is:

[0100] After the photoelectric sensor 50 completes the positioning of the inflatable bag blank 4, at the initial moment when the line connecting the grippers 51 is exactly perpendicular to the conveying direction of the conveyor line, the two sets of grippers 51 are located at the same horizontal position. At this time, the distance between the grippers 51 is exactly the length L2 of the push rod 54. When correcting the deviation, it is necessary to eliminate the angle α between the line connecting the photoelectric sensor 50 and the side of the inflatable bag blank 4 that is clamped. If the push rod 54 between the grippers 51 is likened to the right angle side, and the side of the inflatable bag blank 4 that is clamped is the hypotenuse, the angle between the right angle side and the hypotenuse is α. During the correction process, the hypotenuse is converted to the position of the right angle side. Given that the length L2 is fixed, the variables are the length of the hypotenuse and the angle α, and the relationship between the length of the hypotenuse and the angle α is L2 / COSα. Therefore, the arc protrusion distance L1 of the guide block 53 is L2 / COSα-L2.

[0101] Furthermore, the gripper 51, which moves along the width of the conveyor line, will simultaneously and gradually adjust the tilted side of the outer bag opening to a horizontal position, thereby achieving simultaneous correction of the opening sides at both ends of the outer bag. This is more accurate than the existing correction method that only corrects one side.

[0102] like Figure 6As shown, it should also be noted that the correction of the inflatable bag blank 4 in this invention is for inflatable bag blank 4 with a small tilt angle. Because when the tilt angle is too large, the inflatable bag blank 4 will be clamped and pulled by only one set of grippers 51. Therefore, no matter how the other set of grippers 51 tries to correct the tilt, it cannot be corrected. At this time, when the photoelectric sensor cannot correct the detection of the inflatable bag blank 4 by the grippers 51, it will send a signal to the alarm to notify the operator to perform manual correction. At the same time, the purpose of this setting is to correct the tilt angle. Existing correction structures all use visual recognition combined with a rotation correction structure to achieve accuracy. While existing methods offer options for correcting deviations, the combination of visual recognition and rotational correction makes the overall correction mechanism more complex, significantly increasing equipment design and maintenance costs. Furthermore, the probability of large tilt angles occurring during production is extremely low, making it unprofitable for manufacturers. Existing correction mechanisms can achieve small-angle corrections, but wrinkles may appear during the process. Although visual recognition combined with rotational correction can eliminate both correction and wrinkles, the cost-effectiveness is not ideal. Therefore, the applicant developed the correction method of this invention, which saves production costs without complicating the correction mechanism.

[0103] Example 4:

[0104] like Figures 12 to 14 As shown, the difference between Embodiment 4 and Embodiment 2 of this application is as follows:

[0105] A reset spring 564 is installed between the base 561 and the gripper 51. The reset spring 564 drives the gripper 51, which has been moved and adjusted along the slide rail 562, to reset.

[0106] Furthermore, an electromagnetic adsorption element 565 is installed on the base 561, which adsorbs and fixes the gripper 51. A photoelectric sensor switch 566 is provided at the starting end of the guide block 53. When the photoelectric sensor switch 566 contacts the push rod 54, it controls the electromagnetic adsorption element 565 to turn on and off.

[0107] Furthermore, a limiting rod 567 is installed on the base 561, which abuts against the gripper 51 to prevent the gripper 51 from disengaging from the slide rail 562.

[0108] It should be noted that after the gripper 51 in this application is adjusted in the width direction of the conveyor line, it needs to be reset. The present invention uses a reset spring 564 to reset it. In addition, in order to ensure that the gripper 51 does not move in the width direction of the conveyor line during the traction process, which would cause deviation in the subsequent correction, the present invention also provides an electromagnetic adsorption element 565 to fix the gripper 51. The electromagnetic adsorption element 565 is controlled by the contact relationship between the push rod 54 and the photoelectric sensor switch 566. That is, once the push rod 54 contacts the corresponding photoelectric sensor switch 566 during the correction process, the electromagnetic adsorption element 565 will be de-energized and demagnetized, and the gripper 51 will be pushed by the push rod 54. When the gripper is reset again and the push rod returns to the starting end of the guide block 53, the photoelectric sensor switch 566 controls the electromagnetic adsorption element 565 to be energized and magnetized again through the re-contact between the push rod 54 and the photoelectric sensor switch 566, so that the gripper is adsorbed and fixed again.

[0109] Example 5:

[0110] Referring to Example 2, the difference between Example 5 and Example 2 of this application lies in the following:

[0111] like Figure 14 As shown, the gripper 51 includes a gripper base 511, a gripper 512, a gripper gear 513, a gripper cylinder 514, and a gripper rack 515;

[0112] The gripper seat 511 is square-shaped and is movable via the sliding unit 56.

[0113] The clamping claw 512 is rotatably mounted on the clamping claw seat 511. The clamping claw 512 is equipped with a roller 516 for clamping the inflatable bag blank 4, and the top of the clamping claw seat 511 is provided with a buffer pad 517 that corresponds to and cooperates with the roller 516.

[0114] The gripper gear 513 is sleeved on the flipping shaft of the clamping jaw 512;

[0115] The gripper cylinder 514 is installed below the gripper 512. The gripper cylinder 514 drives the gripper rack 515 to cooperate with the gripper gear 513, so that the gripper 512 is flipped.

[0116] It should be noted that initially, the clamping claw 512 of the gripper 51 is in the open state. Then, the gripper gear 513 drives the gripper rack 515 to cooperate with the gripper gear 513, causing the clamping claw 512 to rotate. This allows the clamping claw 512 to cooperate with the buffer pad 517, thereby clamping the side of the inflatable bag blank 4. After clamping, the linear module 52 drives the inflatable bag blank 4 to move, and the photoelectric sensor 50 is used for positioning.

[0117] 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 within the protection scope of the present invention.

Claims

1. A method for processing a cushioning inflatable bag, characterized in that, The cushioning air bag includes: Outer bag (1), inner bag (2) and inflation valve (3); The outer bag (1) is a woven bag structure, the inner bag (2) is a sealed bag structure, the inner bag (2) is inserted into the outer bag (1), and the four sides of the outer bag (1) and the inner bag (2) are sealed, and the four corners or four sides of the outer bag (1) are connected with straps (10). The inflation valve (3) includes a valve core (31) and a valve cover (32). The valve core (31) is installed on the inner bag (2). The valve core (31) is a one-way valve structure, and the valve nozzle of the valve core (31) extends outward through the outer bag (1). The valve cover (32) is located outside the outer bag (1) and is a sealing cover on the valve nozzle of the valve core (31). The processing method includes the following steps: Step 1: Cut the outer bag. Cut the rolled-up cylindrical outer bag into sections to obtain a fixed-length outer bag (1) with open ends. Make an installation hole (11) on the outer bag (1) for installing the inflation valve (3). Step 2: Pre-installation of the inner bag. In step 1, an installation inner hole (21) is opened on the inner bag (2), and the valve core (31) of the inflation valve (3) is pre-installed at the installation inner hole (21). Step 3: Fit the inner and outer bags together. Fit the outer bag (1) obtained in Step 1 and the inner bag (2) obtained in Step 2 together, so that the valve core (31) on the inner bag (2) passes through the mounting hole (11) to form an inflatable bag blank (4). Step 4: Reversal and Correction. The inflatable bag blank (4) obtained in Step 3 is reversed by a conveyor line perpendicular to 90°, so that the openings at both ends of the outer bag (1) are located on both sides of the conveyor line. The correction mechanism (5) below the conveyor line corrects the deviation of the inflatable bag blank (4). The correction process includes the following steps: Step a, clamping the bag: the two sets of grippers (51) on the correction mechanism (5) located below the conveyor line clamp one side of the inflatable bag blank (4) after the 90° reversal is completed. Step b, traction detection: The grippers (51) clamping the inflatable bag blank (4) are driven to move by the corresponding linear modules (52) below, pulling the inflatable bag blank (4) towards the photoelectric sensor (50). Two sets of photoelectric sensors (50) are arranged along the width of the conveyor line, and the photoelectric sensors (50) are respectively arranged corresponding to the grippers (51). After the photoelectric sensor (50) on either side detects the inflatable bag blank (4), the grippers (51) of both sets stop moving. If the photoelectric sensors (50) of both sets detect the inflatable bag blank (4) at the same time, step c is skipped directly. Step c, correction, wherein the gripper (51) on one side of the inflatable bag blank (4) that was not detected by the photoelectric sensor (50) moves forward again to pull the inflatable bag blank (4) on that side until it is detected by the photoelectric sensor (50). Simultaneously, the gripper (51) on the other side moves along the width of the conveyor line, away from the gripper (51) on the opposite side, so that the side of the inflatable bag blank (4) that was clamped by the gripper (51) is straightened again. Step 5: Seal and seal. After the correction process is completed, the inflatable bag blank (4) is sewn with the end openings by the sewing mechanism (6) installed on both sides of the conveyor line to form an inflatable bag (40). Step 6: Covering and sealing. After the inflatable bag (40) has been sewn, the valve cover (32) is picked up by the robot arm (7) installed on one side of the conveyor line and pressed onto the valve nozzle of the valve core (31). Step 7: Connect the straps. After the air bag (40) is covered, sew the straps (10) on its four corners or four sides. After the straps are connected, the bag is taken off the production line.

2. The processing method of a cushioning inflatable bag according to claim 1, characterized in that: In step c, the gripper (51) that moves and pulls the inflatable bag blank (4) drives the gripper (51) on the other side to move along the width direction of the conveyor line through the squeezing and contacting cooperation between the guide block (53) and the push rod (54). The guide block (53) is installed and connected to any one of the grippers (51), and the push rod (54) is installed on another set of grippers (51).

3. The processing method of a cushioning inflatable bag according to claim 2, characterized in that: The sidewall of the guide block (53) and the push rod (54) is arc-shaped, and the arc protrusion distance of the arc sidewall of the guide block (53) gradually increases along the traction movement direction of the inflatable bag blank (4).

4. The processing method of a cushioning inflatable bag according to claim 2, characterized in that: The arc-shaped protrusion distance from the contact point A between the guide block (53) and the push rod (54) to the bottom edge B of the guide block (53) is L1, the distance of the push rod (54) is L2, the angle between the line connecting the photoelectric sensor (50) and the side of the inflatable bag blank (4) is α, and L1, L2 and α satisfy the relationship L1=L2 / COSα-L2.

5. The processing method of a cushioning inflatable bag according to claim 3, characterized in that: The gripper (51) moves in the width direction of the conveyor line via a sliding unit (56) provided below. The sliding unit (56) includes a base (561), a slide rail (562), and a slider (563). The base (561) is mounted on the linear module (52) and is driven to move by the linear module (52). The slide rail (562) is horizontally mounted on the base (561), and the slide rail (562) is arranged along the width direction of the conveyor line; The slider (563) is mounted on the bottom of the gripper (51), and the gripper (51) is moved along the slide rail (562) via the slider (563).

6. A method for processing a cushioning inflatable bag according to claim 5, characterized in that: A reset spring (564) is installed between the base (561) and the gripper (51), and the reset spring (564) drives the gripper (51) which has been moved and adjusted along the slide rail (562) to reset.

7. A method for processing a cushioning inflatable bag according to claim 5, characterized in that, Also includes: An electromagnetic adsorption element (565) is installed on the base (561). The electromagnetic adsorption element (565) adsorbs and fixes the gripper (51). A photoelectric sensor switch (566) is provided at the starting end of the guide block (53). When the photoelectric sensor switch (566) contacts the push rod (54), it controls the electromagnetic adsorption element (565) to turn on and off.

8. A method for processing a cushioning inflatable bag according to claim 5, characterized in that, Also includes: A limiting rod (567) is installed on the base (561). The limiting rod (567) abuts against the gripper (51) to prevent the gripper (51) from disengaging from the slide rail (562).

9. A method for processing a cushioning inflatable bag according to claim 5, characterized in that: The gripper (51) includes a gripper seat (511), a clamping gripper (512), a gripper gear (513), a gripper cylinder (514), and a gripper rack (515). The gripper seat (511) is square-shaped and is movable via the sliding unit (56). The clamping claw (512) is rotatably mounted on the clamping claw seat (511). The clamping claw (512) is equipped with a roller (516) for clamping the inflatable bag blank (4), and the top of the clamping claw seat (511) is provided with a buffer pad (517) that corresponds to and cooperates with the roller (516). The gripper gear (513) is sleeved on the flipping shaft of the gripper (512); The gripper cylinder (514) is installed below the gripper (512). The gripper cylinder (514) drives the gripper rack (515) to cooperate with the gripper gear (513), so that the gripper (512) is flipped.

Images