JPH08127301A - Air bag device - Google Patents

Abstract

PURPOSE: To provide an air-bag folding device which has exceedingly high productivity and enables continuous production, giving a form to be easily attached to any appropriate position of a vehicle and also maintaining uniformity of quality in the case of an air bag device for protecting occupants. CONSTITUTION: A device equipped with a circular assembly base 1 for laying thereon a circular work, that is, an air bag having an opening part for introducing gas in the center of one side cloth thereof, one left-side work chuck 10, the other left-side work chuck 11, one right-side work chuck 12, and the other right-side work chuck 13 for folding up the circular work along a Y-axis line after moving parallelly to an X-axis line and sandwiching the circular work relative to the X-axis line and the Y-axis line cutting one another at right angles on the circular assembly base 1. Further, the device is composed so that the circular work can be wound round a winding pipe along the X-axis line and folded by means of a pressing cylinder after those chucks move parallel to the Y-axis line and sandwich the circular work.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an airbag for protecting a vehicle occupant. In particular, the present invention relates to a folding device for an airbag that facilitates incorporation into a steering wheel.

[0002]

2. Description of the Related Art In order to mitigate the impact of an impact on a passenger in a vehicle collision, an airbag installed on a steering wheel normally absorbs impact energy to protect the passenger. Since the storage space of the airbag that can be obtained in the steering wheel is small, the airbag and the storage space of the airbag must absorb impact energy to protect the occupant.
In addition to the fact that the air bag can inflate without hindrance, the shape of the air bag must be taken into consideration so that the air bag can be easily stored when it is mounted. Regarding the air bag, FIG. 3 of JP-A-4-138951 and FIG. 5 (A), (B) of JP-A-4-163252,
There is an airbag folding method shown in (c).

In the folding mode of FIG. 3 of Japanese Patent Laid-Open No. 4-138951, the inner peripheral surface side of the upper base cloth is made flat so as to contact the inner peripheral surface side of the lower base cloth. Then, as shown in the middle part of FIG. 3, the peripheral edge (vertical edge on the paper surface of FIG. 3) is folded to the center side on the outer peripheral surface side of the upper base cloth. At this time, the edges in the left-right direction on the paper surface of FIG. 3 are also folded toward the center side (see the lower part of FIG. 3) for completion. The folding method of the airbag shown in FIGS. 5 (a), 5 (b) and 5 (c) of Japanese Patent Laid-Open No. 4-163252 is as shown by dotted lines in FIGS. 5 (a) and 5 (b). Folded along the line to complete the shape shown in (c).

[0004]

In the conventional folding method of the air bag, since the folding method is such that both side surfaces are formed in a corrugated shape, the molding from the circular air bag becomes complicated, There are problems that it is difficult to increase productivity and that it is difficult to maintain uniform quality when the airbag is folded.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems. An object of the present invention is to provide a device that folds an airbag with extremely high productivity that allows continuous production while maintaining uniform quality in a shape that can be easily mounted on an appropriate place of a vehicle. In the present application, the airbag is hereinafter referred to as a circular work.

[0006]

A circular base assembly for mounting a circular work, and a circular base assembly which passes through the center of the surface of the circular base assembly and is orthogonal to an x-axis and a y-axis. Arranged symmetrically with respect to the y-axis, sliding in the direction of the y-axis synchronously and parallel to the x-axis, and sandwiching the appropriate portion symmetrical with respect to the x-axis of the circular workpiece. A plurality of work chucks, and the x-axis symmetrically arranged about the y-axis of the circular base assembly, sliding parallel to the y-axis, and symmetrical about the y-axis of the base assembly of the circular work. And a plurality of take-up pipes arranged so as to sandwich a portion including the circular work, and arranged to slide on a z-axis passing through the center of the base assembly and orthogonal to the base assembly so that the circular work can be pressed. Pressed cylinder , Slid the workpiece chuck,
A rodless cylinder that moves the circular work to the appropriate portion, and a link mechanism that performs a folding operation by alternately moving the upper and lower chucks of the work chuck in an arc.
The winding pipe is slid to hold a portion of the circular work including the x-axis, and the winding work is wound toward the center of the base assembly so as to wrap the circular work toward the center of the base assembly. The upper and lower chucks of the work chuck are alternately moved in an arc so as to wrap the shaped work in a sandwiched state, and the upper and lower chucks of the work chuck are overlapped with each other, and then a portion including the x-axis is attached to the winding pipe. The circular work is configured to be folded into a rectangular shape by performing a pinching operation and a winding operation so as to wrap it toward the center of the base assembly.

The work chuck is arranged so that its center line overlaps with the x-axis and is symmetrical with respect to the y-axis, and the work holding member is engaged with a pressing cylinder that moves parallel to the z-axis, A lower chuck plate that is arranged symmetrically with respect to the axis, is fixed to a chuck cylinder that is rotatably supported by a rotation link, and moves vertically along the z-axis direction, and is fixed to the lower chuck plate. An upper chuck plate fixed to the fixed fixing arm via a link,
It is composed of the fixing arm and a pin for rotatably engaging the chuck cylinder, and after the circular work is pressed by the work pressing member on the x-axis, the circular work is clamped at the appropriate portion. The upper chuck and the lower chuck are alternately rotated by the rotation link about an appropriate axis parallel to the x axis as a rotation center, and the work chucks can be alternately superposed on the work holding member. Configured to.

[0008] The winding pipes are arranged at symmetrical positions with respect to the y-axis, and the left winding pipe and the right winding pipe are provided with slits on opposite surfaces which can hold the circular work, and A winding motor that drives each of the winding pipes, a left side claw and a right side claw for pressing the circular workpiece, which are arranged in the middle of the winding pipe and symmetrically with respect to the y-axis, and the winding. A cylinder that simultaneously slides the take-up pipe in parallel with the y-axis and the take-up pipe slides to hold the circular work, and then swings through a swing link to move toward the center of the circular work. It consists of a motor that rotates so that it winds up.

The base assembly includes a left side base and a right side base arranged on the x axis and symmetrically with respect to the y axis, and a front side arranged on the y axis and symmetrically with respect to the x axis. A base, a rear side base, a left side base, a right side base, a front side base and a rear side base, a fixed base rotatably coupled to each other, and the circular chuck after the work chuck clamps the work. The front and rear base links that simultaneously rotate the front base and the rear base, and the left side that simultaneously rotates the left base and the right base before the winding pipe holds the circular workpiece. And a link for the right side base.

[0010]

A folding device for a circular work (air bag) according to the present invention comprises the inflator insertion port of a circular work (air bag), which is made of two cloths and has an inflator insertion opening at the center of one of the cloths. After fixing to the retainer fixing base that protrudes into the opening provided in the center of the base assembly, the left and right rodless cylinders simultaneously work with the left rodless cylinder and right rodless cylinder. Each chuck is referred to as a chuck cylinder, a lower chuck plate, an upper chuck plate, a fixing arm, a link, and a fixing head.) The left work chuck and the right work chuck are parallel to the x-axis. And simultaneously slide toward the center of the base assembly to remove the left work chuck and front Stopping the right workpiece chuck to the circular workpiece clamping position. The circular work is pressed by the left work holding member and the right work holding member, and both edges of the left work holding member and the right work holding member are folding lines, and at the same time, the left work chuck and the right work chuck are When the circular work is sandwiched and the left work chuck and the right work chuck are oscillated, and the left work press member and the right work press member are alternately stacked, the circular work is loosened. Instead of being folded into a rectangle. Next, the left-hand side take-up pipe and the right-hand side take-up pipe and the left-hand side claw and the right-hand side claw are slid simultaneously in parallel to the y-axis and toward the center of the base assembly, so that The sliding is stopped at a position where the slit and the slit of the right winding pipe sandwich the circular work. The left side claw and the right side claw that are normally upright are pushed down to press the circular work, and then the winding pipe holds both ends of the circular work folded in parallel to the x-axis. , Swinging toward the center of the base assembly, then winding the left-hand take-up pipe counterclockwise and the right-hand take-up pipe clockwise, towards the center of the base assembly . When the winding is completed, the pressing cylinder descends to press the wound circular work, and the circular work is folded into a shape close to a square without loosening. Therefore, since the circular workpiece can be repeatedly folded at a predetermined position and line, it is possible to perform folding with uniform quality and excellent productivity.

[0011]

1 and 2 are a plan view and part of a side view of an embodiment of an air bag device according to the present invention. 1 and 2, reference numeral 1 denotes a base assembly, the upper surface of which has the same shape as the circular work 104, and the circular work 1 is provided on the upper surface.
04 is mounted and fixed, the front side base 2, the rear side base 3, the fixed base 4 fixed to the column 57, the left side base 5, and the right side base 6. The fixed base 4 has an opening 7 in the center. And the front side base 2 and the rear side base 3 have cutouts 114 and 115 and a cutout 1 respectively.
16, 117 are formed, and the front side base 2 is held when the left side work chuck and the right side work chucks 10, 11 and 12, 13 hold the circular work 104.
It is also designed so as not to interfere with the rear base 3. The x passing through the center of the base assembly 1 and orthogonal to
In the axis and the y-axis, the first mount 100 is arranged in a cross shape along the x-axis and the y-axis. The left side work holding member and the right side work holding members 8 and 9, the left side work chucks 10 and 11, and the right side work chucks 12 and 13 are arranged on the first pedestal 100 along the x axis. Is mounted on a third mount 102 that slides along the x-axis via the left LM guide rails 20 and 21 and the right LM guide rails 22 and 23, and faces the center of the base assembly 1. Slide together as one. The notches 114 and 115 and the notches 116 and 11 provided in the front base 2 and the rear base 3 of the base assembly 1, respectively.
In FIG. 7, when the left work chucks 10 and 11 and the upper chuck plates and the lower chuck plates of the right work chucks 12 and 13 reach a portion for holding the circular work 104, the sliding is stopped.

The sliding is performed by the left rodless cylinder 18
And the operating force of the right rodless cylinder 19. or,
A fourth mount 103 disposed on the second mount 101 fixed along the y-axis on the first mount 100 via a left guide rail 32 and a right guide rail 33.
A left motor 26 and a right motor 27 with a left take-up pipe 24 and a right take-up pipe 25, which slide integrally toward the center of the base assembly 1, a left swing link 30 and a right swing link 31. And a left rotary actuator 38 with a left claw 36 and a right rotary actuator 39 with a right claw 37. Furthermore,
The axis is arranged on the intersection of the x-axis and the y-axis at the end of the arm fixed to the pillar 99 formed in a gate shape and extending on the first mount 100 along the y-axis. The circular work 104 is provided with a pressing cylinder 98 provided and descends each time the circular work 104 is completely folded.
Hold down.

In the opening 7 at the center of the fixed base 4 of the base assembly 1 arranged on the intersection of the x-axis and the y-axis, the support column 57 fixed on the first mount 100 is provided. Retainer cylinder 55 fixed on the center line of the
Thus, the retainer fixing base 56 that moves up and down along the z-axis is provided.

With the above structure, first, the circular work 1
04 on the retainer fixing base 56 arranged in the central opening 7 of the base assembly 1, along the x-axis, the left work holding member 8 and the right work holding member 9, and the left side. Sliding the work chucks 10 and 11 and the right work chucks 12 and 13 to appropriate positions, the circular work 104 is pressed by the left work holding member 8 and the right work holding member 9 along the x-axis. The left and right edges of the left work holding member 8 and the right work holding member 9 are the circular work 10
4, the left work chuck 10 and the right work chuck 12, which are folding lines in the x-axis direction, swing around an axis parallel to the x-axis to perform the folding operation, and the left work holding member 8 and the edge of the right side work holding member 9, first fold the circular work 104, and then, at the edge opposite to the edge of the left side work holding member 8 and the right side work holding member 9, the left side work. Chuck 10 and the right side work chuck 12
The rocking ends and the folding operation ends when the edges parallel to the x-axis are overlapped.

Next, the left work chuck 11 and
The right work chuck 13 swings about an axis parallel to the x-axis to perform the folding operation, and the opposite edges of the left work holding member 8 and the right work holding member 9 are used as folding lines. The circular work 104
And fold the left work chuck 11 and the right work chuck 13 in parallel with the x-axis at the edges of the left work hold member 8 and the right work hold member 9 that face the opposite edges. The swinging operation is repeated and the folding operation is completed, the pressing cylinder 98 descends and presses the folded circular work 104, and then the left work pressing member 8 is pressed.
And the right work holding member 9, the left work chucks 10 and 11, and the right work chucks 12 and 13.
Is pulled out from the folded circular work 104 and returned to the original position,

Then, the left side motor 26 and the right side motor 27 with the left side take-up pipe 24 and the right side take-up pipe 25, the left side swing link 30 and the right side swing link 31, the left side pawl 36 and the right side pawl, respectively. The fourth pedestal 1 to which the left rotary actuator 38 and the right rotary actuator 39 each having 37 are fixedly attached.
03 slides on the left guide rail 32 and the right guide rail 33 along the y-axis toward the x-axis by the operating force of the central rodless cylinder 34. When substantially the center of the slit 109 provided on the facing surface of each of the left-hand side take-up pipe 24 and the right-hand side take-up pipe 25 reaches the x-ray and clamps the circular work 104, the fourth mount 103 is provided. Stop sliding, then drive the left side claw 36 and the right side claw 37 by driving the left side rotary actuator 38 and the right side rotary actuator 39 to push down the circular work 104 on the x-axis, and then the circle. Shape work 104
The left-hand side winding pipe 24 and the right-hand side winding pipe 25 sandwiching the sway are swung inward by the left-side sway link 30 and the right-side sway link 31, that is, toward the y-axis. When the movement ends when the left winding pipe 24 and the right winding pipe 25 come into contact with each other on the y-axis of the circular work 104, the left winding pipe 24 and the right winding pipe 25 are connected to the left motor. By the clockwise rotation by 26 and the counterclockwise rotation by the right motor 27, the circular work 104 first folded in a rectangular shape along the x-axis is turned to the center of the folded circular work 104 on both sides. The left side claw 36 and the right side claw 37,
The left-hand side take-up pipe 24 and the right-hand side take-up pipe 25 that are pulled in parallel along the x-axis against the tension of the left-hand side roll reel 42 and the right-hand side roll reel 43.
When the winding is completed, the pressing cylinder 98 descends and presses the circular work 104 folded into a substantially rectangular shape,

Next, the left-hand side take-up pipe 24 and the right-hand side take-up pipe 25 are reverse-rotated by approximately half a turn by the left-side motor 26 and the right-side motor 27, respectively, and take up the circular work 104. Loosen the left winding pipe 24 and the right winding pipe 25.
The circular work 1 that is folded when returning to the original position
04 to facilitate withdrawal from the left side, and then the left side take-up pipe 24 and the right side take-up pipe 25 with the left side motor 26 or the right side motor 27, respectively.
And the left swing link 30 and the right swing link 3
1 and the fourth mount 103 to which the left side rotary actuator 38 with the left side claw 36 and the right side claw 37 and the right side rotary actuator 39 are fixed.
Is returned to its original position by the operation of the central rodless cylinder 34, then the pressing cylinder 98 is returned to its original position, and the folded circular workpiece 104 is removed from the base assembly 1 to complete the folding operation.

3, 4, and 5 are detailed views of a base assembly and an elevation view of the base assembly and another elevation view of the base assembly according to the present invention. The retainer cylinder 55 and the retainer fixing base 56 fixed on the center line of the column 57, and the fixed base 4 having the center of the opening 7 on the center line of the column 57.
And x that is parallel to one side through the center of the fixed base 4.
The both ends of the fixed base 4, which are orthogonal to the axis, are engaged with each other via a left arm 51 and a right arm 52 which are rotatably engaged with the left base cylinder 53 and the right base cylinder 54. The left side base 5 and the right side base 6, and the x passing through the center of the fixed base 4.
The front side base 2 and the rear side base 3, which are engaged with the both ends of the fixed base 4 parallel to the axis through the front side arm 48 and the rear side arm 49, the front side base 2 and the rear side base 3 respectively. The left side work chuck 10,
11 and the right work chucks 12 and 13 are provided with notches 114 and 1 so as not to interfere with the front base 2 and the rear base 3 when sandwiching the circular work 104.
The base assembly 1 constructed as described above, in which 15 and notches 116 and 117 are formed, has a circular shape.

The front and rear base links 60 are rotatably engaged with the pistons 59 of the front and rear base cylinders 58 fixed to the support columns 57 by using the rotary shaft 50.
Is further rotatably engaged with the front arm 48 and the rear arm 49. The front side base 2 and the rear side base 3 are the front side and the rear side when the left side work chucks 10 and 11 and the right side work chucks 12 and 13 clamp the circular work 104 on the base assembly 1. The base cylinder 58 operates to move the front and rear base links 60 downward 61 (indicated by a dotted line in FIG. 5) to move the front base 2 and the rear base 3 about the rotary shaft 50. Rotate it down about 90 degrees,
Folding operation by the left work chucks 10 and 11 and the right work chucks 12 and 13 is facilitated.

FIGS. 6, 7 and 8 are detailed views of an elevation view, an operating mechanism and a side view of the left and right work chucks according to the present invention. A front cylinder 96 and a rear cylinder 97 whose ends are rotatably engaged with the first pedestal 100.
And one ends 90 and 91 are rotatably engaged with the first frame 100, and the other ends are rotatably engaged with the front cylinder 96 and the rear cylinder 97, respectively. However, the link 92 and the link 93 each having the front-side synchronization pin hole 88 or the rear-side synchronization pin hole 89 in the center thereof
And a front side guide port 94 and a rear side guide port 95 provided on the first frame 100,

Left side L provided on the first mount 100
M guide rails 20 and 22 and right LM guide rail 2
A third pedestal 102 that slides through 1, 23, and a pivot center of the third pedestal 102, and one end thereof is connected to the front-side synchronization pin hole 88 or the rear-side synchronization pin hole 89. Front side synchronizing pins 84, 86 and rear side synchronizing pins 85, 87 which are formed so as to be insertably engageable are embedded, and the left side work chucks 10 and 11 and the right side work chucks 12 and 13 are provided at the other ends. The left-side turning link 80 and the right-side turning link 81 that swingably support, and the left-side turning link 80 and the right-side turning link 81 are formed in parallelograms, respectively. The right work chucks 12 and 13 always move parallel to the third mount 102 even if they swing.

The left side work chucks 10 and 11 and the right side work chucks 12 and 13 are rotatably attached to the left side turning link 80 and the right side turning link 81, which are arranged symmetrically with respect to the z-axis. The left work chucks 10, 11 and the right work chucks 12, 13 are arranged on a supported member. The left work chucks 10, 11 and the right work chucks 12,
Reference numeral 13 denotes a left chuck cylinder 76 and a right chuck cylinder 77, and a left lower chuck plate 64 and a right lower chuck plate 65 fixed to the piston heads of the left chuck cylinder 76 and the right chuck cylinder 77. A left-side fixed arm 68 and a right-side fixed arm 69,
Further, a left side fixing head 66 and a right side fixing head 67 to which the left side upper chuck plate 62 and the right side upper chuck plate 63 are fixed.
And the left side fixing arm 68 and the right side fixing arm 6
9, the left side fixing head 66 and the right side fixing head 6
The left side link 70 and the right side link 71 for rotatably engaging 7, the main body of the left side chuck cylinder 76 and the right side chuck cylinder 77, and the left side upper chuck plate 62 and the right side upper chuck plate 63 are rotated. The left pin 74 and the right pin 75 are freely engaged with each other without any relative movement, and the left guide rod 72 and the right guide rod 73 guide the left fixing arm 68 and the right fixing arm 69.

When the left chuck cylinder 76 and the right chuck cylinder 77 are operated and the piston is pushed up, the left link 70 and the right link 7
The left side fixing head 66 and the right side fixing head 67 are pushed up via 1 and the left side upper chuck plate 62 is rotated about the left side pin 74 and the right side pin 75.
The right upper chuck plate 63 is rotated so that the leading edge of the right upper chuck plate 63 is changed to the left lower chuck plate 64 and the right lower chuck plate 65.
Are pressed and brought into close contact with each other to strongly clamp the circular work 104. Then, the front side cylinder 96 and the rear side cylinder 97 shown in FIG. 7 are sequentially made to extend, and the front side synchronization pin hole 88 or the rear side cylinder is formed with the end portions 90 and 91 respectively as rotation centers. The link 92 and the link 93 provided with the synchronization pin hole 89 are sequentially swung,

Front guide port 94 and rear guide port 9
5, the front-side synchronization pins 84 and 8 are engaged with the front-side synchronization pin holes 88 or the rear-side synchronization pin holes 89.
6. The left side rotation link 80 and the right side rotation link 81 are sequentially rotated in the x-axis direction about the rotation centers 78 and 79 by 6 and the rear side synchronization pins 85 and 87. The swing range of the swing link 80 and the right swing link 81 is restricted by the stopper 44 provided on the first frame 100, and the swing range of the left swing link 80 and the right swing link 81 is restricted. The left work chucks 10 and 11 and the right work chucks 12 and 13 are sequentially rocked by the rocking of the circular work 104.
Are folded alternately with the left work holding member 8 and the right work holding member 9 as folding references. The left work chucks 10 and 11 and the right work chucks 12 and 13 are left return cylinders 14 and 16,
When the right-side return cylinders 15 and 17 are extended, the left-side turning link 80 and the right-side turning link 81 are turned in the opposite direction and returned to their original positions.

A left rodless cylinder 18 and a right rodless cylinder 19 fixed to the first mount 100.
The third mount 1 that slides along the x-axis by
02, the left side pressing cylinder 82 and the right side pressing cylinder 83, which are supported by the columns fixed on the support rod 02, and the piston heads of the left side pressing cylinder 82 and the right side pressing cylinder 83.
It is provided with the left work holding member 8 and the right work holding member 9 that press on the axis and both side edges serve as a folding reference line of the circular work 104, and stoppers that regulate the stroke during suction.

9 and 10 are a detailed view of an elevation view and a side view of the left and right take-up pipes according to the present invention. The detailed drawing of the said left side winding pipe 24, the said right side winding pipe 25, the said left side motor 26, the said right side motor 27, the said left side swing link 30, and the said right side swing link 31 is shown. The fourth pedestal 103 and the fourth pedestal 103 are disposed on the second pedestal 101 fixed to the first pedestal 100 via the left guide rail 32 and the right guide rail 33. Fixed stanchions 105 and 106
And the left rotary actuator 38 and the right side claw 37, which rotate the left side claw 36, which slides through the central guide rail 35 fixed on the fifth mount 112 supported by the columns 105 and 106. The right rotary actuator 39, the left roll reel 42 having the left wire 40 and the right roll reel 43 having the right wire 41 fixed on the fifth pedestal 112, and the left wire 40 being the left rotary actuator 3
8 and the right side wire 41 is connected to the right side rotary actuator 39,

One end rotatably engaged with the fourth pedestal 103 and the other end rotatably engaged with the sixth pedestal 111, and the left side which always rotates while maintaining a parallelogram. The swing link 30, the right swing link 31, and the sixth mount 11
Left winding pipe 24 fixed to the upper bracket 1 and driven by the left motor 26 and supported by a bearing and having a slit 109 at the center of one surface thereof.
And the right side motor 27 and the right side winding pipe 25 driven by the right side motor 27 and supported by the bearing and having a slit 109 in the center of one surface thereof, and the left side swing link 30.
The left-side swing cylinder 28 and the right-side swing link 31 for swinging the left-side swing cylinder 28 and the right-side swing link 31 up to the stopper 44 fixed to the fourth mount 103, and the stopper 44 fixed to the fourth mount 103.
Up to the right swing cylinder 29 for swinging, and a central rodless cylinder 34 fixed on the second mount 101 for sliding the fourth mount 103 along the y-axis.
Composed of.

The central rodless cylinder 34 is actuated to slide the fourth mount 103, and the slits 109 provided so as to face the left winding pipe 24 and the right winding pipe 25 are folded into the rectangle. The central rodless cylinder 34 stops operating when it reaches a preset position for clamping both sides of the circular work 104, and then the left pawl 36 rotates the left rotary actuator 38 and the right pawl 37. The right-side rotary actuator 39 that rotates is simultaneously actuated, the claws 36 and 37 press the circular work 104 on the x-axis, and then the left-side base cylinder 53 and the right-side base cylinder 54 are actuated. , The left-side base 5 and the right-side base 6 are rotated downward by about 90 degrees, and Flop 24 and the right take-up pipe 2
5 does not interfere when the circular work 104 is clamped, and then the left winding pipe 24
And the right-side take-up pipe 25 is swung toward the y-axis along the x-axis through the left-side swing link 30 and the right-side swing link 31, and brought into contact with the y-axis in the vicinity thereof. Left motor 26 and right motor 27
The circular work 1 that is driven to drive and is folded into the rectangle.
Winding 04 from both sides,

Next, the pressing cylinder 98 presses the circular work 104 wound up, and then the left side motor 26 and the right side motor 27 are reversely driven by a half rotation to loosen the winding and the left side winding pipe 24 and Facilitating pulling out of the right side winding pipe 25, then reversely operating the central rodless cylinder 34 to slide the fourth mount 103, and pulling out the left side winding pipe 24 and the right side winding pipe 25, Next, the pressure of the pressing cylinder 98 is released and the rolled circular work 104 is pressed by its own weight. Then, the left side winding pipe 24 and the right side winding pipe 25 are moved to the left side swing link 30 and the right side swing. A reverse rotation is made to return to the original position via the link 31, and then the left rotary actuator 38
Then, the right rotary actuator 39 is reversely operated at the same time to raise the pawls 36 and 37, and then the pressing cylinder 98 is reversely operated to pull up and the folded circular workpiece 104 is taken out to complete the work. FIG. 11 shows a cross section when the circular work 104 is folded, (a) is a cross sectional view when it is folded with a line parallel to the x-axis as a reference line, and (b) is the y-axis. FIG. 6 is a cross-sectional view when folded by using a line parallel to as a reference line.

[0030]

Since the present invention is constructed as described above, the following remarkable effects can be obtained. Primarily,
A circular base assembly that can repeatedly and stably mount circular workpieces, left and right workpiece chucks that fold parallel to the x-axis, and a take-up pipe that winds and folds circular workpieces parallel to the y-axis. Therefore, it is possible to fold the work efficiently and continuously with stable quality. Secondly, after pressing the circular work with the work pressing member, the circular work is clamped by the left and right work chucks and alternately rotated around an appropriate axis parallel to the x-axis to rotate the work pressing member. Since it is constructed so that the work chucks are always stacked in the same shape, the left and right work chucks can be easily pulled out after folding the circular work pieces without causing the mold to collapse. Thirdly, the circular work is clamped by the left and right take-up pipes with slits that can be clamped, and the circular work is clamped from the left and right simultaneously to oscillate to the center position, and then rolled up. It can be folded. Fourth, the base assembly is formed into a circular shape by rotatably coupling the left and right bases symmetrically arranged with respect to the y-axis and the front and rear bases symmetrically arranged with respect to the x-axis to a fixed base. However, when the folding operation is started, the left and right bases and the front and rear bases are sequentially rotated downward, which facilitates the folding work.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of an air bag device according to the present invention.

FIG. 2 is a part of a side view of an embodiment of an airbag device according to the present invention.

FIG. 3 is a detailed view of a base assembly according to the present invention.

FIG. 4 is a detailed view of an elevation view of a base assembly according to the present invention.

FIG. 5 is a detailed view of another elevation view of a base assembly according to the present invention.

FIG. 6 is a detailed view of an elevation view of the left and right workpiece chucks according to the present invention.

FIG. 7 is a detailed view of the operating mechanism of the left and right work chucks according to the present invention.

FIG. 8 is a detailed view of a side view of the left and right workpiece chucks according to the present invention.

FIG. 9 is a detailed view of an elevation view of the left and right take-up pipes according to the present invention.

FIG. 10 is a detailed view of a side view of a winding pipe according to the present invention.

FIG. 11 is a folded sectional view of a circular work according to the present invention.

[Explanation of symbols]

 1 Base Assembly 2 Front Base 3 Rear Base 4 Fixed Base 5 Left Base 6 Right Base 7 Opening 8 Left Work Pressing Member 9 Right Work Pressing Member 10 Left Work Chuck 11 Left Work Chuck 12 Right Work Chuck 13 Right Work Chuck 24 Left Take-up pipe 25 Right-hand take-up pipe 28 Left swing cylinder 29 Right swing cylinder 30 Left swing link 31 Right swing link 36 Left side claw 37 Right side claw 62 Left upper chuck plate 63 Right upper chuck plate 64 Left lower chuck plate 65 Lower right chuck plate 66 Left side fixing head 67 Right side fixing head 68 Left side fixing arm 69 Right side fixing arm 70 Left side link 71 Right side link 74 Left side pin 75 Right side pin 76 Left side chuck cylinder 77 Right side chuck cylinder 80 Left side turning link 1 Right Rotating Link 92 Link 93 Link 96 Front Side Cylinder 97 Rear Side Cylinder 98 Pressing Cylinder 100 First Stand 101 Second Stand 102 Third Stand 103 Fourth Stand 104 Circular Work (Airbag) 105 Column 106 Column 109 Slit 111 Sixth frame 112 Fifth frame 114 Notch 115 Notch 116 Notch 117 Notch

Claims (4)

[Claims] 1. A circular base assembly for mounting a circular work, and a symmetry with respect to the y axis line in an x-axis line and a y-axis line which are orthogonal to each other and which pass through a center of a surface of the circular base assembly. A plurality of work chucks that are arranged to slide in the direction of the y-axis and in parallel to the x-axis synchronously, and sandwich an appropriate portion symmetrical with respect to the x-axis of the circular work. And a circular shape, which is arranged symmetrically with respect to the y-axis of the base assembly, slides parallel to the y-axis, and sandwiches a portion of the circular work including the x-axis, which is symmetrical with respect to the y-axis of the base assembly. A plurality of winding pipes arranged so that the circular work can be pressed, and a pressing cylinder arranged so as to slide on the z axis passing through the center of the base assembly and orthogonal to the base assembly, The work A rodless cylinder that slides the hook to move to the appropriate portion of the circular workpiece, a link mechanism that causes the upper and lower chucks of the work chuck to alternately perform a circular arc motion to perform a folding operation, and slides the winding pipe. A state in which the circular workpiece is clamped so that the circular workpiece is clamped toward the center of the base assembly after the portion including the x-axis is clamped, and the circular workpiece is clamped. As if wrapped in
Alternately, the upper and lower chucks of the work chuck are circularly moved to overlap the upper and lower chucks of the work chuck, and then the winding pipe is clamped at a portion including the x-axis line so as to be wrapped toward the center of the base assembly. An air bag device, characterized in that the circular work is folded into a rectangular shape by simultaneously performing a winding operation. 2. A work pressing member which is arranged such that the center line of the work chuck overlaps with the x-axis and is symmetrical with respect to the y-axis, and which engages with a pressing cylinder that moves in parallel with the z-axis. A lower chuck plate that is arranged at a symmetrical position with respect to the x-axis, is fixed to a chuck cylinder that is rotatably supported by a rotation link, and moves up and down along the z-axis direction; An upper chuck plate that is fixed to a fixing arm that is fixed to the fixing arm via a link; and a pin that rotatably engages the fixing arm and the chuck cylinder. After pressing on the x-axis, the upper chuck and the lower chuck, which clamp the circular workpiece at the appropriate portions, are rotated by the rotation link so as to rotate an appropriate axis parallel to the x-axis. The air bag device according to claim 1, wherein the air chuck device is configured to be alternately rotated about a rolling center so that the upper chuck and the lower chuck are alternately superposed on the work holding member. 3. A left-hand side take-up pipe and a right-hand side take-up pipe, wherein the take-up pipe is provided at symmetrical positions with respect to the y-axis line, and has slits capable of holding the circular workpiece on opposite surfaces thereof. A winding motor that drives each of the winding pipes, a left pawl and a right pawl that presses the circular work piece that is arranged in the middle of the winding pipe and symmetrically with respect to the y-axis, A rodless cylinder that simultaneously slides the winding pipe in parallel to the y-axis; and a circular work after the winding pipe slides to clamp the circular work and then swings through a swing link. The air bag device according to claim 1, wherein the air bag device is constituted by a motor that rotates so as to wind up toward the center. 4. The base assembly includes a left side base and a right side base disposed on the x axis and symmetrically with respect to the y axis, and a base assembly disposed on the y axis and symmetrically with respect to the x axis. A front base and a rear base are rotatably coupled to a fixed base, respectively, and are formed into a circular shape. After the circular workpiece is clamped by the work chuck, the front base and the rear base are simultaneously rotated. The air bag device according to claim 1, wherein the circular pipe is clamped by the winding pipe after the left base and the right base are simultaneously rotated.