CN116035384B - Method for manufacturing airbag cushion - Google Patents

Abstract

The invention relates to a method for manufacturing an airbag cushion, including the steps of preparing materials, making a bubble layer, welding an air nozzle base, making a bottom film layer, welding the bottom film layer, trimming and assembling a metal air nozzle, etc. The bubble layer is made using a newly designed bubble layer production equipment, which greatly improves the production efficiency. The roll material can be directly made into independent bubble layers, which are then welded with the bottom film layer and the air nozzle to form an airbag cushion.

Description

Method for manufacturing airbag cushion

[Technical field]

The invention relates to the technical field of manufacturing methods, in particular to a manufacturing method of an airbag seat cushion.

[Background technology]

The airbag cushion in the existing technology includes a bubble layer and a bottom film layer. When making it, the sheet-shaped raw materials are first cut out, and then the sheet-shaped raw materials are placed on a mold piece by piece for die casting and welding. There are problems such as low production efficiency and low production capacity. For example, the Chinese invention patent with the announcement number CN110901113A discloses a production process and airbag cushion of an anti-gravity balance massage buffer convection airbag. The technical solution adopted is: step 1, preparing materials, preparing the cushion surface required for producing the airbag; step 2, bonding: bonding the cushion surface to form a material 1; Step three, prepare the upper cushion body; heat material one, then cover material two on material one, and obtain the upper cushion body by die-casting; material two is elastic cloth, which can be stretched and completely covered on material one, and by laying material two, material two can be isolated from the die-casting mold to prevent material two from adhering to the die-casting mold; after die-casting, remove material two to obtain the upper cushion body; step four, prepare the lower cushion body; step five, fit the upper cushion body and the lower cushion body to obtain a semi-finished product; step six, shape to obtain a finished product. This production process has problems such as low production efficiency and low production capacity. Therefore, in order to improve production efficiency, the inventor designed a bubble layer production equipment and improved the production process.

[Summary of the invention]

In order to solve the above problems, the present invention provides a method for manufacturing an airbag cushion with high production efficiency.

To achieve the above purpose, the present invention provides the following technical solutions:

A method for manufacturing an airbag cushion comprises the following steps:

Step 1, material preparation: prepare the plastic material or rubber material 9 required for producing the airbag cushion;

Step 2, making a bubble layer: laying the plastic material or rubber material 9 flat in a blister machine for blister processing to obtain a bubble layer 101;

Step 3, welding the air nozzle base: the bubble layer 101 is provided with a plurality of independent and interconnected air bag cavities, and an air nozzle hole is punched out in the air bag cavity, and then the air nozzle base is welded to the air nozzle hole of the bubble layer 101 by a high-frequency welding machine;

Step 4, making the bottom film layer: laying the plastic material or rubber material 9 flat on the bottom film layer 102 cutting die of the punching machine, and cutting out the bottom film layer 102 by the punching machine;

Step 5, welding the bottom film layer: put the bubble layer 101 into the welding mold of the high-frequency welding machine, with the airbag cavity opening facing upward, and then cover the bottom film layer 102 on the bubble layer 101, and weld the bottom film layer 102 to the bubble layer 101 by the high-frequency welding machine to form a semi-finished seat cushion;

Step 6, trimming: put the semi-finished cushion into the trimming die of the punching machine, and cut off the excess skirt with the punching machine;

Step 7, assembling the metal air nozzle: assemble the metal air nozzle on the air nozzle base of the semi-finished seat cushion with the skirt cut off in step 6 to obtain a finished airbag seat cushion.

As a preferred embodiment, it is further defined as follows: the blister machine in step 2 includes a frame 1, on which a clamping mechanism 2 for clamping a plastic material or a rubber material 9 is provided, and on which a lower mold 31 located at the lower end of the clamping mechanism 2 and a lower mold driving assembly 32 capable of driving the lower mold 31 to move up and down are also provided, and on which an upper mold 33 located at the upper end of the clamping mechanism 2 and an upper mold driving assembly 34 capable of driving the upper mold 33 to move up and down are also provided, and the upper mold 33 and the lower mold 31 can form a molding space for molding a bubble layer 101 after being molded together; on which a heating assembly 5 located above the outer side of the clamping mechanism 2 is also provided; on which a vacuum exhauster connected to the molding space is also provided;

Step 2 specifically includes the following steps:

Step 2.1, clamping: the clamping mechanism 2 clamps the plastic material or rubber material 9;

Step 2.2, preheating: the heating component 5 moves to the top of the clamping mechanism 2 to preheat the plastic material or rubber material 9;

Step 2.3, mold closing and blister forming: after heating, the heating component 5 is removed, and the upper mold driving component 34 drives the upper mold 33 to move downward to close the mold while the vacuum exhauster exhausts air, so that the plastic material or rubber material 9 forms a bubble layer 101;

Step 2.4, demolding: after the upper mold driving assembly 34 drives the upper mold 33 to move upward, the lower mold driving assembly 32 drives the lower mold 31 to move downward, and the clamping mechanism 2 contacts the plastic material or rubber material 9 to remove the bubble layer 101.

As a preferred embodiment, it is further defined as: the lower mold 31 is provided with a plurality of concave cavities 35 with openings facing upward, and connecting grooves 36 are provided on the side walls between adjacent concave cavities 35; the upper mold 33 is provided with convex heads 37 corresponding to the concave cavities 35 one by one, and after the mold is closed, the convex heads 37 extend into the concave cavities 35 to form a molding gap, and the molding gap is connected with the connecting grooves 36 to form the molding space; the lower mold 31 is also provided with an air suction hole connected with the molding space, and the vacuum pump is connected to the air suction hole.

As a preferred embodiment, it is further defined as: the clamping mechanism 2 includes an upper clamping frame 21, a lower clamping frame 22 and a clamping drive assembly 23 for driving the upper clamping frame 21 to move up and down, and the middle parts of the upper clamping frame 21 and the lower clamping frame 22 are both provided with a hollow mold clearance space 20; the lower mold 31 is located at the lower end of the lower clamping frame 22, and the upper mold 33 is located at the upper end of the upper clamping frame 21; the frame 1 is also provided with a driving motor 6, and the driving motor 6 drives the heating assembly 5 to move back and forth laterally through the transmission assembly 4, and the heating assembly 5 is also provided with a cutting knife 53 facing the clamping mechanism 2; the frame 1 is also provided with a control device 10, and the frame 1 is also provided with a control device 10, and the clamping drive assembly 23, the lower mold drive assembly 32, the upper mold drive assembly 34 and the drive motor 6 are electrically connected to the control device 10 respectively.

As a preferred embodiment, it is further defined as follows: the lower mold driving assembly 32 includes a lower mold driving cylinder 321 fixedly connected to the frame 1 and a push plate 322 fixedly connected to the output shaft of the lower mold driving cylinder 321, the frame is provided with a lower mold guide slide plate 323 fixedly connected thereto, the lower mold guide slide plate 323 is provided with a lower mold guide slide block 324, the push plate 322 is provided with a lower mold guide slide rod 325 which is penetrated on the lower mold guide slide block 324, and the lower mold guide slide rod 325 is fixedly connected to the lower mold 31 after passing through the lower mold guide slide block 324;

The upper mold driving assembly 34 includes an upper mold driving cylinder 341 fixedly connected to the frame 1, and an upper cylinder fixing plate 342 for fixing the upper mold driving cylinder 341 is provided on the frame. The output shaft of the upper mold driving cylinder 341 is fixedly connected to the upper mold 33.

As a preferred embodiment, it is further defined as: the lower clamping frame 22 is fixedly connected to the frame 1, the clamping drive assembly 23 includes a clamping slide guide block 231 fixedly connected to the lower clamping frame 22 and a clamping slide 232 passed through the clamping slide guide block 231 and capable of sliding relative to the clamping slide, one end of the clamping slide 232 is fixedly connected to the upper clamping frame 21, and the other end of the clamping slide 232 is connected to the output end of the clamping push cylinder 233.

As a preferred embodiment, it is further defined as follows: the heating assembly 5 includes a heating tube 52 fixing member 51 and a heating tube 52 arranged at the lower end of the heating tube 52 fixing member 51; guide pulleys 53 are respectively arranged on both sides of the heating tube fixing member 51, and a guide rail 11 for the guide pulley 53 to slide is arranged on the frame 1;

The transmission assembly 4 includes a transmission rod 41, on which a first gear 411 is provided, and the output end of the drive motor 6 is connected to the first gear 411 through a first chain 42; a second gear 412 and a third gear 413 are respectively provided at both ends of the transmission rod 41, and the transmission assembly 4 also includes a fourth gear 414, a fifth gear 415 and a sixth gear 416 arranged on the frame 1 and located on one side of the heating assembly 5, and a seventh gear 417, an eighth gear 418 and a ninth gear 419 arranged on the frame 1 and located on the other side of the heating assembly 5; the second gear 412, the fourth gear 414, the fifth gear 415 and the sixth gear 416 are wound with a second chain 43, the third gear 413, the seventh gear 417, the eighth gear 418 and the ninth gear 419 are wound with a third chain 44, and the lower ends of the second chain 43 and the third chain 44 are respectively fixedly connected to the heating assembly 5.

As a preferred embodiment, it is further defined as: the plastic material or rubber material 9 is in a coiled state, the frame 1 is also provided with a material rack 70 for placing the plastic material or rubber material 9, and a first roller 71 and a second roller 72 arranged in sequence along the feeding direction, and a third roller 73 is also provided at the upper end of the second roller 72 so that a material guide gap is formed between the second roller 72 and the third roller 73. After the plastic material or rubber material 9 is pulled out, it passes through the first roller 71 and the second roller 72 in sequence and is laid flat on the lower clamping frame 22.

As a preferred embodiment, it is further defined as: the frame 1 is also provided with a blowing mechanism located at the upper end of the clamping mechanism 2; the blowing mechanism includes an exhaust fan 80 and a bellows 81 fixed on the frame, the air outlet of the exhaust fan 80 is connected to the air inlet of the bellows 81, and the air outlet of the bellows 81 faces the mold clearance space 20 so that wind can blow toward the raw material 9.

As a preferred embodiment, it is further defined as: the rubber material 9 in step 1 is TPU material.

The beneficial effects of the present invention are as follows: the manufacturing method of the present invention includes the steps of preparing materials, making a bubble layer, welding an air nozzle base, making a bottom film layer, welding the bottom film layer, trimming and assembling a metal air nozzle, and adopts a newly designed production equipment to make the bubble layer, which greatly improves the production efficiency. The roll material can be directly made into independent bubble layers 101, which are then welded with the bottom film layer 102 and the air nozzle to form an airbag cushion.

【Brief Description of the Drawings】

Fig. 1 is one of the structural schematic diagrams of the present invention;

FIG2 is a second schematic diagram of the structure of the present invention;

FIG3 is a schematic structural diagram of a clamping mechanism;

FIG4 is a schematic diagram of the structure of the clamping drive assembly of Embodiment 1;

FIG5 is a second structural schematic diagram of the embodiment 1 of the clamping drive assembly;

FIG6 is a schematic diagram of the structure of the clamping drive assembly according to Embodiment 2;

7 is a second structural schematic diagram of embodiment 2 of the clamping drive assembly;

FIG8 is a schematic structural diagram of a lower mold, a lower mold driving assembly, an upper mold, and an upper mold driving assembly;

9 is a schematic diagram of the structure of the lower mold driving assembly driving the lower mold to move upward;

10 is a schematic diagram of the structure of the lower mold driving assembly driving the lower mold to move downward;

FIG11 is a schematic diagram of a partial structure of the lower mold;

12 is a schematic diagram of the structure of the upper mold driving assembly driving the upper mold to move upward;

13 is a schematic diagram of the structure of the upper mold driving assembly driving the upper mold to move downward;

FIG14 is a schematic diagram of the structure of the heating assembly, the drive motor and the transmission assembly;

FIG15 is a second schematic diagram of the structure of the heating assembly, the drive motor and the transmission assembly;

FIG16 is a schematic diagram of the structure of a heating assembly;

FIG17 is a schematic diagram of the structure of the transmission assembly;

FIG18 is a schematic diagram of the structure of the transmission assembly;

FIG19 is a block diagram of a manufacturing method;

FIG20 is a schematic diagram of the structure of an airbag cushion;

FIG. 21 is a cross-sectional view of the airbag cushion.

[Specific implementation method]

The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

As shown in Figures 19 and 20, a method for manufacturing an airbag cushion comprises the following steps:

Step 1, material preparation: prepare the plastic material or rubber material 9 required for producing the airbag cushion; the rubber material 9 in step 1 is TPU (thermoplastic polyurethane elastomer rubber) material.

Step 2, making a bubble layer: laying the plastic material or rubber material 9 flat in a blister machine for blister processing to obtain a bubble layer 101;

Step 3, welding the air nozzle base: the bubble layer 101 is provided with a plurality of independent and interconnected air bag cavities, and an air nozzle hole is punched out in the air bag cavity, and then the air nozzle base is welded to the air nozzle hole of the bubble layer 101 by a high-frequency welding machine;

Step 4, making the bottom film layer: laying the plastic material or rubber material 9 flat on the bottom film layer 102 cutting die of the punching machine, and cutting out the bottom film layer 102 by the punching machine;

Step 5, welding the bottom film layer: put the bubble layer 101 into the welding mold of the high-frequency welding machine, with the airbag cavity opening facing upward, and then cover the bottom film layer 102 on the bubble layer 101, and weld the bottom film layer 102 to the bubble layer 101 by the high-frequency welding machine to form a semi-finished seat cushion;

Step 6, trimming: put the semi-finished cushion into the trimming die of the punching machine, and cut off the excess skirt with the punching machine;

Step 7, assembling the metal air nozzle: assemble the metal air nozzle on the air nozzle base of the semi-finished cushion with the skirt cut off in step 6 to obtain the finished airbag cushion. This step is novel and unique, and uses a newly designed production equipment to make the bubble layer, which greatly improves the production efficiency. The roll material can be directly made into independent bubble layers 101, which are then welded with the bottom film layer 102 and the air nozzle to form the airbag cushion.

In this embodiment, as shown in Figures 1 to 18, the blister machine in step 2 includes a frame 1, on which a clamping mechanism 2 for clamping a plastic material or a rubber material 9 is provided, and a lower mold 31 located at the lower end of the clamping mechanism 2 and a lower mold driving assembly 32 capable of driving the lower mold 31 to move up and down are also provided on the frame 1, and an upper mold 33 located at the upper end of the clamping mechanism 2 and an upper mold driving assembly 34 capable of driving the upper mold 33 to move up and down are also provided on the frame 1, and the upper mold 33 and the lower mold 31 can be molded together. A molding space for molding a bubble layer 101 is formed; the frame 1 is also provided with a heating component 5 located above the outer side of the clamping mechanism 2; the frame 1 is also provided with a vacuum exhauster connected to the molding space; after the heating component 5 heats the plastic material or rubber material 9, the upper mold 33 and the lower mold 31 are molded together and the vacuum exhauster is exhausted at the same time so that the plastic material or rubber material 9 is formed with a bubble layer; the loading, preheating, mold closing, vacuum forming and demolding processes are automatically completed, and the raw material is automatically processed into a bubble layer, with a high degree of automation and high production efficiency.

Furthermore, step 2 specifically includes the following steps:

Step 2.1, clamping: the clamping mechanism 2 clamps the plastic material or rubber material 9;

Step 2.2, preheating: the heating component 5 moves to the top of the clamping mechanism 2 to preheat the plastic material or rubber material 9;

Step 2.3, mold closing and blister forming: after heating, the heating component 5 is removed, and the upper mold driving component 34 drives the upper mold 33 to move downward to close the mold while the vacuum exhauster exhausts air, so that the plastic material or rubber material 9 forms a bubble layer 101;

Step 2.4, demolding: after the upper mold driving assembly 34 drives the upper mold 33 to move upward, the lower mold driving assembly 32 drives the lower mold 31 to move downward, and the clamping mechanism 2 contacts the plastic material or rubber material 9 to remove the bubble layer 101;

Furthermore, step 2 specifically includes the following steps:

In this embodiment, as shown in Figures 8 to 13, the lower mold 31 is provided with a plurality of concave cavities 35 with openings facing upward, and connecting grooves 36 are provided on the side walls between adjacent concave cavities 35. The upper mold 33 is provided with convex heads 37 corresponding to the concave cavities 35 one by one. After the mold is closed, the convex heads 37 extend into the concave cavities 35 to form a molding gap, and the molding gap is connected with the connecting grooves 36 to form a molding space for molding a bubble layer; the frame 1 is also provided with a vacuum pump for sucking away the air in the molding space during the mold closing and the vacuum forming. The processing vacuum forming device can quickly form the raw materials into the bubble layer of the airbag cushion by vacuum forming. Compared with traditional manufacturing equipment, the device has higher production efficiency.

The clamping mechanism 2 includes an upper clamping frame 21, a lower clamping frame 22 and a clamping drive assembly 23 that drives the upper clamping frame 21 to move up and down, and the middle parts of the upper clamping frame 21 and the lower clamping frame 22 are both provided with a hollow mold clearance space 20; after the plastic material or rubber material 9 is placed on the lower clamping frame 22, the clamping drive assembly 23 drives the upper clamping frame 21 to move downward to clamp the raw material 9; during the subsequent mold closing and blistering, the die head processes the plastic material or rubber material 9 through the mold clearance space 20, which is more conducive to the subsequent blistering process to process and form the bubble layer, thereby improving the product qualification rate and production efficiency. The lower mold 31 is located at the lower end of the lower clamping frame 22, and the upper mold 33 is located at the upper end of the upper clamping frame 21. The frame 1 is also provided with a drive motor 6, and the drive motor 6 drives the heating component 5 to move back and forth horizontally through the transmission component 4. When the heating component 5 moves to the top of the clamping mechanism 2, it can preheat the plastic material or rubber material 9, which is more conducive to the subsequent processing and forming of the blister process, thereby improving the product qualification rate and production efficiency. The heating component 5 is also provided with a cutter 53 facing the clamping mechanism 2; the frame 1 is also provided with a control device 10, and the frame 1 is also provided with a control device 10, and the clamping drive component 23, the lower mold drive component 32, the upper mold drive component 34 and the drive motor 6 are respectively electrically connected to the control device 10 to realize automatic control.

Step 2.5, the clamping drive assembly 23 drives the upper clamping frame 21 to move downward to clamp the plastic material or rubber material 9, and then the lower mold drive assembly 32 drives the lower mold 31 to move to the lower end of the lower clamping frame 22, and the drive motor 6 drives the heating assembly 5 to move to the top of the clamping mechanism 2 through the transmission assembly 4 to heat the plastic material or rubber material 9. At the same time, the cutter 53 cuts off the plastic material or rubber material 9 to separate the bubble layer that has been formed by vacuum forming;

Step 2.6: Repeat the above steps 2.3 to 2.5 to process the rear plastic material or rubber material 9 to form a bubble layer.

In this embodiment, the lower mold driving assembly 32 includes a lower mold driving cylinder 321 fixedly connected to the frame 1 and a push plate 322 fixedly connected to the output shaft of the lower mold driving cylinder 321. The frame 1 is provided with a lower mold guide slide plate 323 fixedly connected thereto, and the lower mold guide slide plate 323 is provided with a lower mold guide slide block 324. The push plate 322 is provided with a lower mold guide slide rod 325 that passes through the lower mold guide slide block 324. The lower mold guide slide rod 325 passes through the lower mold guide slide block 324 and is fixedly connected to the lower mold 31. The driving cylinder 321 drives the push plate 322 to realize the up and down movement of the lower mold guide slide rod 325 relative to the lower mold guide slide block 324, thereby realizing the up and down movement of the lower mold 31. In order to make the up and down movement more stable. The number of the lower mold guide slide blocks 324 is four, the number of the lower mold guide slide rods 325 is correspondingly four, and the four lower mold guide slide blocks 324 are respectively located at the four corners of the lower mold guide slide plate 323, so that the upper and lower movements of the lower mold 31 are more stable.

In this embodiment, the upper mold driving assembly 34 includes an upper mold driving cylinder 341 fixedly connected to the frame 1, and an upper cylinder fixing plate 342 for fixing the upper mold driving cylinder 341 is provided on the frame 1. The output shaft of the upper mold driving cylinder 341 is fixedly connected to the upper mold 33, and the upper mold 33 is directly pushed up and down by the upper mold driving assembly 34. In order to make the upper and lower movements more stable, the upper mold guide slide rod 343 that can move up and down relative to the upper cylinder fixing plate 342 is worn, and the lower end of the upper mold guide slide rod 343 is fixedly connected to the upper mold 33. Furthermore, the upper mold guide slide rod 343 is set to four, and the four upper mold guide slide rods 343 are respectively located at the four corners of the upper cylinder fixing plate 342, so that the upper mold 33 moves up and down more smoothly.

In this embodiment, two implementation modes are listed for the material clamping drive component 23. The first implementation mode is shown in Figures 4 and 5. The lower material clamping frame 22 is fixedly connected to the frame 1. The material clamping drive component 23 includes a material clamping slide guide block 231 fixedly connected to the lower material clamping frame 22 and a material clamping slide 232 that is inserted into the material clamping slide guide block 231 and can slide relative to it. One end of the material clamping slide 232 is fixedly connected to the upper material clamping frame 21, and the other end of the material clamping slide 232 is connected to the output end of the material clamping push cylinder 233. Furthermore, the material clamping slide rod guide blocks 231 are set to be four, two of which are located on the left and right sides of the front end of the lower material clamping frame 22, and the other two are located on the left and right sides of the rear end of the lower material clamping frame 22; the material clamping slide rods 232 are correspondingly set to be four, and any two of the material clamping slide rods 232 are connected to the output end of the material clamping pushing cylinder 233 after being connected through the material clamping transverse connecting piece 234, which is cleverly designed and simple in structure.

The second embodiment is shown in Figures 6 and 7. The lower material clamping frame 22 is fixedly connected to the frame 1. The material clamping driving assembly 23 includes a material clamping slide guide block 231 fixedly connected to the lower material clamping frame 22 and a material clamping push cylinder 233 fixedly connected to the frame 1. The output end of the material clamping push cylinder 233 passes through the material clamping slide guide block 231 and is fixedly connected to the upper material clamping frame 21. Furthermore, in order to move more smoothly up and down. The material clamping slide guide blocks 231 are set to four, two of which are located on the left and right sides of the front end of the lower material clamping frame 22, and the other two are located on the left and right sides of the rear end of the lower material clamping frame 22; the material clamping push cylinder 233 is correspondingly set to four, and any two of the material clamping push cylinders 233 are connected to the frame 1 through the material clamping transverse connecting piece 234. The design is ingenious and the structure is simple. Other pushing methods in the prior art can realize the relative movement between the upper material clamping frame 21 and the lower material clamping frame 22 and then realize the two position states of clamping or non-clamping.

In this embodiment, as shown in FIG. 16 , the heating assembly 5 comprises a heating tube 52 fixing member 51 and a heating tube 52 arranged at the lower end of the heating tube 52 fixing member 51 ; guide pulleys 53 are respectively arranged on both sides of the heating tube fixing member 51 , and a guide rail 11 for the guide pulley 53 to slide is arranged on the frame 1 ; the movement is realized by rolling of the wheel system, and the movement is more stable. The sliding method in the prior art can also be adopted.

In this embodiment, as shown in FIGS. 17 and 18 , the transmission assembly 4 includes a transmission rod 41 , a first gear 411 is provided on the transmission rod 41 , and the output end of the drive motor 3 is connected to the first gear 411 through a first chain 42 . Furthermore, a second gear 412 and a third gear 413 are respectively provided at both ends of the transmission rod 41, and the transmission assembly 4 also includes a fourth gear 414, a fifth gear 415 and a sixth gear 416 arranged on the frame 1 and located on one side of the heating assembly 2, and a seventh gear 417, an eighth gear 418 and a ninth gear 419 arranged on the frame 1 and located on the other side of the heating assembly 2; a second chain 43 is wound around the second gear 412, the fourth gear 414, the fifth gear 415 and the sixth gear 416, and a third chain 44 is wound around the third gear 413, the seventh gear 417, the eighth gear 418 and the ninth gear 419, and the lower ends of the second chain 43 and the third chain 44 are respectively fixedly connected to the heating assembly 2, and the movement of the heating assembly 2 can be achieved through a motor and a gear train assembly, and the force is distributed at both ends of the heating assembly 2, so that the movement of the heating assembly 2 is smoother.

In this embodiment, the second gear 412, the third gear 413, the sixth gear 416 and the ninth gear 419 are on a first horizontal plane, and the fourth gear 414, the fifth gear 415, the seventh gear 417 and the eighth gear 418 are on a second horizontal plane, and the second horizontal plane is higher than the first horizontal plane so that the second chain 43 and the third chain 44 are in a quadrilateral shape after assembly. Furthermore, the second chain 43 and the third chain 44 are in a trapezoidal shape after assembly, which is more conducive to the reciprocating movement of the second chain 43 and the third chain 44.

In this embodiment, in order to make the movement of the heating component 2 more stable, four guide pulleys 23 are provided, two of which are located on one side of the heating component 2, and the other two are located on the other side of the heating component 2; the first longitudinal hanger 24 and the second longitudinal hanger 25 for movably connecting with the guide pulley 23 are respectively provided on both sides of the heating tube fixing member 21, the upper end of the longitudinal hanger 24 is fixedly connected to the second chain 43, and the upper end of the second longitudinal hanger 25 is fixedly connected to the third chain 44.

A cutter 53 is also provided at the front end of the heating tube fixing part 51. When the heating component 2 moves toward the plastic transparent sheet or the rubber transparent sheet, the cutter 5 cuts the plastic transparent sheet or the rubber transparent sheet, and automatically cuts the formed bubble layer material while preheating the rear raw material. The material feeding speed is fast, and the production efficiency is effectively improved.

In this embodiment, the frame 1 is also provided with a material rack 70 for placing the raw material coil 91, and a first roller 71 and a second roller 72 arranged in sequence along the feeding direction. A third roller 73 is also arranged at the upper end of the second roller 72 so that a material guide gap is formed between the second roller 72 and the third roller 73. The raw material 9 pulled out of the raw material coil passes through the first roller 71 and the second roller 72 in sequence and is laid flat on the lower clamping frame 22. The design is ingenious and the structure is simple. The feeding direction is adjusted by multiple rollers, so that the plastic material or rubber material 9 can be fed horizontally, which is more conducive to the subsequent processing and forming of the bubble layer in the vacuum forming process, thereby improving the product qualification rate and production efficiency.

In this embodiment, the frame 1 is further provided with a blowing mechanism located at the upper end of the clamping mechanism 2. The blowing mechanism includes an air pump 7 and a bellows 8 fixed on the frame, the air outlet of the air pump 7 is connected to the air inlet of the bellows 8, and the air outlet of the bellows 8 faces the mold clearance space 20 so that wind can blow toward the plastic material or rubber material 9. The blowing mechanism can blow and expand the plastic material or rubber material 9 before the mold is closed for vacuum forming or before the clamping mechanism 2 clamps the material, which is more conducive to the plastic material or rubber material 9 being tensioned during tightening. In addition, after the mold is closed, the blowing mechanism dissipates heat from the bubble layer, which is more conducive to demolding.

Claims (9)

1. A method of manufacturing an airbag cushion, characterized by: the method comprises the following steps:

step 1, preparing materials: preparing a plastic or rubber material (9) required for producing the airbag cushion;

step 2, manufacturing a bubble layer: spreading a plastic material or a rubber material (9) in a plastic sucking machine for plastic sucking processing to obtain a bubble layer (101);

Step 3, welding an air tap base: the air bubble layer (101) is provided with a plurality of independent and communicated air bubble cavities, air nozzle holes are punched in the air bubble cavities, and then the air nozzle base is welded on the air nozzle holes of the air bubble layer (101) through a high-frequency welding machine;

Step 4, manufacturing a negative film layer: spreading plastic materials or rubber materials (9) on a negative film layer (102) cutting die of a punching machine, and cutting the negative film layer (102) through the punching machine;

Step 5, welding a negative film layer: placing the bubble layer (101) into a welding die of a high-frequency welding machine, enabling an opening of the air bag cavity to face upwards, covering the bubble layer (101) with the bottom sheet layer (102), and welding the bottom sheet layer (102) on the bubble layer (101) through the high-frequency welding machine to form a semi-finished cushion product;

step 6, trimming: the semi-finished cushion is sleeved into a trimming die of a punch press, and the redundant skirt edge is cut off through the punch press;

Step 7, assembling a metal air tap: assembling a metal air tap on an air tap base of the semi-finished cushion with the skirt cut off in the step 6 to obtain an air bag cushion finished product;

The plastic sucking machine in the step 2 comprises a frame (1), wherein a clamping mechanism (2) for clamping plastic materials or rubber materials (9) is arranged on the frame (1), a lower die (31) positioned at the lower end of the clamping mechanism (2) and a lower die driving assembly (32) capable of driving the lower die (31) to move up and down are also arranged on the frame (1), an upper die (33) positioned at the upper end of the clamping mechanism (2) and an upper die driving assembly (34) capable of driving the upper die (33) to move up and down are also arranged on the frame (1), and after the upper die (33) and the lower die (31) are clamped, a molding space for molding a bubble layer (101) can be formed; the frame (1) is also provided with a heating component (5) positioned above the outer side of the clamping mechanism (2); the frame (1) is also provided with a vacuum air extractor communicated with the forming space;

the step 2 specifically further comprises the following steps:

Step 2.1, clamping: the clamping mechanism (2) clamps the plastic material or the rubber material (9);

step 2.2, preheating: the heating component (5) moves to the upper part of the clamping mechanism (2) to preheat the plastic material or the rubber material (9);

And 2.3, die assembly and plastic suction: after heating, the heating component (5) is moved out, the upper die driving component (34) drives the upper die (33) to move downwards for die assembly, and the vacuum air pump pumps air at the same time, so that the plastic material or the rubber material (9) is formed with a bubble layer (101);

Step 2.4, demolding: after the upper die driving assembly (34) drives the upper die (33) to move upwards, the lower die driving assembly (32) drives the lower die (31) to move downwards, and the material clamping mechanism (2) contacts with the clamping of the plastic material or the rubber material (9) to take out the bubble layer (101).

2. The method of manufacturing an airbag cushion according to claim 1, characterized in that: the lower die (31) is provided with a plurality of concave cavities (35) with upward openings, communication grooves (36) are formed in the side walls between adjacent concave cavities (35), the upper die (33) is provided with raised heads (37) which are in one-to-one correspondence with the concave cavities (35), after die assembly, the raised heads (37) extend into the concave cavities (35) to form forming gaps, and the forming gaps are communicated with the communication grooves (36) to form the forming space; the lower die (31) is also provided with an air suction hole communicated with the forming space, and the vacuum air extractor is connected with the air suction hole.

3. The method of manufacturing an airbag cushion according to claim 2, characterized in that: the clamping mechanism (2) comprises an upper clamping frame piece (21), a lower clamping frame piece (22) and a clamping driving assembly (23) for driving the upper clamping frame piece (21) to move up and down, and hollow die abdicating spaces (20) are respectively arranged in the middle of the upper clamping frame piece (21) and the middle of the lower clamping frame piece (22); the lower die (31) is positioned at the lower end of the lower clamping frame piece (22), the upper die (33) is positioned at the upper end of the upper clamping frame piece (21), the machine frame (1) is further provided with a driving motor (6), the driving motor (6) drives the heating component (5) to transversely reciprocate through the transmission component (4), and the heating component (5) is further provided with a cutter (53) facing the clamping mechanism (2); the machine frame (1) is further provided with a control device (10), the machine frame (1) is further provided with the control device (10), and the clamping driving assembly (23), the lower die driving assembly (32), the upper die driving assembly (34) and the driving motor (6) are respectively and electrically connected with the control device (10).

4. A method of manufacturing an airbag cushion according to claim 3, wherein: the lower die driving assembly (32) comprises a lower die driving cylinder (321) fixedly connected with the frame (1) and a pushing plate (322) fixedly connected with an output shaft of the lower die driving cylinder (321), a lower die guide slide plate (323) fixedly connected with the frame is arranged on the frame, a lower die guide slide block (324) is arranged on the lower die guide slide plate (323), a lower die guide slide rod (325) penetrating through the lower die guide slide block (324) is arranged on the pushing plate (322), and the lower die guide slide rod (325) penetrates through the lower die guide slide block (324) and then is fixedly connected with the lower die (31);

The upper die driving assembly (34) comprises an upper die driving cylinder (341) fixedly connected with the frame (1), an upper cylinder fixing plate (342) used for fixing the upper die driving cylinder (341) is arranged on the frame, and an output shaft of the upper die driving cylinder (341) is fixedly connected with the upper die (33).

5. A method of manufacturing an airbag cushion according to claim 3, wherein: the lower clamping frame piece (22) is fixedly connected with the frame (1), the clamping driving assembly (23) comprises a clamping slide bar guide block (231) fixedly connected with the lower clamping frame piece (22) and a clamping slide bar (232) which is arranged on the clamping slide bar guide block (231) in a penetrating manner and can slide relative to the clamping slide bar guide block, one end of the clamping slide bar (232) is fixedly connected with the upper clamping frame piece (21), and the other end of the clamping slide bar (232) is connected with the output end of a clamping pushing cylinder (233).

6. A method of manufacturing an airbag cushion according to claim 3, wherein: the heating assembly (5) comprises a heating pipe (52) fixing piece (51) and a heating pipe (52) arranged at the lower end of the heating pipe (52) fixing piece (51); two sides of the heating pipe fixing piece (51) are respectively provided with a guide pulley (53), and the frame (1) is provided with a guide slide rail (11) for the guide pulleys (53) to slide;

The transmission assembly (4) comprises a transmission rod (41), a first gear (411) is arranged on the transmission rod (41), and the output end of the driving motor (6) is connected with the first gear (411) through a first chain (42); the two ends of the transmission rod (41) are respectively provided with a second gear (412) and a third gear (413), the transmission assembly (4) further comprises a fourth gear (414), a fifth gear (415) and a sixth gear (416) which are arranged on the frame (1) and positioned at one side of the heating assembly (5), and a seventh gear (417), an eighth gear (418) and a ninth gear (419) which are arranged on the frame (1) and positioned at the other side of the heating assembly (5); the second chain (43) is wound on the second gear (412), the fourth gear (414), the fifth gear (415) and the sixth gear (416), the third chain (44) is wound on the third gear (413), the seventh gear (417), the eighth gear (418) and the ninth gear (419), and the lower ends of the second chain (43) and the third chain (44) are fixedly connected with the heating assembly (5) respectively.

7. A method of manufacturing an airbag cushion according to claim 3, wherein: the plastic material or rubber material (9) is in a coiled material state, a material placing frame (70) for placing the plastic material or rubber material (9) and a first roller (71) and a second roller (72) which are sequentially arranged along a feeding direction are further arranged on the frame (1), a third roller (73) is further arranged at the upper end of the second roller (72) so that a material guiding gap is formed between the second roller (72) and the third roller (73), and the plastic material or rubber material (9) is sequentially paved on the lower material clamping frame (22) after being pulled out through the first roller (71) and the second roller (72).

8. A method of manufacturing an airbag cushion according to claim 3, wherein: the frame (1) is also provided with a blowing mechanism positioned at the upper end of the clamping mechanism (2); the blowing mechanism comprises an air extractor (80) and an air box (81) which are fixed on the frame, wherein an air outlet of the air extractor (80) is connected with an air inlet of the air box (81), and an air outlet of the air box (81) faces the die abdication space (20) so that wind can blow to the raw materials (9).

9. A method of manufacturing an airbag cushion according to any one of claims 1-8, wherein: the rubber material (9) in the step 1 is TPU material.