CN212917261U - Stretching forming system for safety air bag gas generator shell - Google Patents
Stretching forming system for safety air bag gas generator shell Download PDFInfo
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- CN212917261U CN212917261U CN202021549087.5U CN202021549087U CN212917261U CN 212917261 U CN212917261 U CN 212917261U CN 202021549087 U CN202021549087 U CN 202021549087U CN 212917261 U CN212917261 U CN 212917261U
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Abstract
The utility model relates to a stretching forming system for a gas generator shell of an air bag, which belongs to the field of air bags and comprises a frame, wherein an upper die, a lower die and a feeding mechanism are arranged on the frame, the lower die comprises a first support plate in a long strip shape, a plurality of female dies are arranged on the first support plate, and a plurality of female dies form a female die set; the upper die comprises a second supporting plate, the second supporting plate is arranged on the rack in a liftable mode, a plurality of male dies are oppositely arranged on the second supporting plate and form a male die set, the two sides of the female die set are respectively provided with a retaining column set, each retaining column set comprises a plurality of retaining columns, each retaining column comprises a connecting column and a pressing plate, each pressing plate is arranged on each connecting column in a liftable mode through a connecting plate, and a convex block is arranged in the middle of the lower surface of each pressing plate; the second backup pad corresponds the bumping post and is provided with the holding tank, can be provided with the baffle with reciprocating in the holding tank, and the upper surface of baffle passes through cylindrical spring to be connected with the bottom of holding tank. The utility model discloses the yields of the gas generator casing of producing is high.
Description
Technical Field
The utility model relates to an air bag field, in particular to air bag gas generator casing stretch forming system.
Background
And the gas generator in the safety air bag is used for filling the air bag with gas to ensure that the air bag is expanded after being inflated when a vehicle collides, so that the safety of passengers is protected. The structure of the shell of the gas generator is a hollow closed structure, and the production process of the shell of the gas generator is as follows: and conveying the steel strip, so that the steel strip continuously passes through the stamping die and is stamped by the stamping die for multiple times until the shell with the shape meeting the requirement is obtained.
Because the shape of the gas generator shell of the safety airbag is complex, the quality requirement is high, and the gas generator shell can be manufactured only through multiple stamping forming processes during production, the steel belt and a stamping die are prevented from deviating in the multiple stamping process, so that the accuracy of the stamping forming process is ensured, the quality of the gas generator shell is further improved, and the yield of the processed gas generator shell is ensured.
SUMMERY OF THE UTILITY MODEL
Therefore, a need exists for a stretching forming system for an airbag gas generator shell, which comprises a frame, wherein an upper die, a lower die and a feeding mechanism are arranged on the frame, the lower die is positioned right below the upper die and comprises a first strip-shaped support plate, a plurality of female dies are sequentially and uniformly arranged on the surface of the first support plate along the length direction of the first support plate, and the female dies form female die sets; the upper die comprises a second supporting plate, the upper surface of the second supporting plate is vertically arranged on the rack in a lifting way through a lifting mechanism, a plurality of male dies are arranged on the lower surface of the second supporting plate corresponding to the female dies, and the male dies form a male die set; the baffle column comprises a connecting column vertically arranged on the first supporting plate in a liftable manner, a pressing plate is arranged above the connecting column and arranged on the connecting column in a liftable manner through a connecting plate, and a convex block is arranged in the middle of the lower surface of the pressing plate; the bumping post is located in the orthographic projection of second backup pad, the second backup pad corresponds the bumping post is provided with and is used for holding the holding tank of clamp plate, the degree of depth of holding tank is greater than the thickness of clamp plate, the thickness of clamp plate is greater than the thickness of terrace die, can be provided with the baffle with reciprocating in the holding tank, the upper surface of baffle pass through cylindrical spring with the bottom of holding tank is connected.
Wherein, the female die set and the male die set are continuous dies.
The utility model discloses in, feed mechanism is used for carrying the steel band for the steel band distance between last mould and lower mould removes, and wherein, when the steel band removed between last mould and lower mould, the lower surface laminating of steel band was at the up end of spliced pole, and the side laminating of steel band is at the medial surface of connecting plate, and the lug on the clamp plate compresses tightly on the steel band at the medial surface of connecting plate.
The utility model discloses the working process does: firstly, the feeding mechanism conveys the steel belt between the upper die and the lower die, then the lifting mechanism drives the second supporting plate to move downwards, in the process of moving downwards of the second supporting plate, a baffle in the containing tank is firstly contacted with the pressing plate and then pushes the pressing plate to move downwards, so as to push the steel belt and the connecting column to move downwards and press the steel belt on the first supporting plate, as the second supporting plate continues to move downwards to be mutually attached with the first supporting plate, the cylindrical spring in the containing tank is compressed, the lug on the pressing plate further presses the edge of the steel belt on the first supporting plate, meanwhile, the male die is contacted with the steel belt and completes the punching process of the steel belt contacted with the male die in the female die, one-time punching operation is completed, then the second supporting plate moves upwards to reset, the connecting column pushes the steel belt to move upwards, so that the part punched out of the steel belt and having the shape of the, then feed mechanism drive steel band distance removes once, then the second backup pad moves down again and accomplishes next punching press operation, analogizes in proper order, lasts and carries out punching press operation to the steel band and obtain gas generator casing.
The lifting mechanism comprises a plurality of hydraulic cylinders, and the hydraulic cylinders synchronously move to drive the second supporting plate to move up and down.
In the utility model, the connecting plate on the connecting column can limit the left and right movement of the steel belt, thereby preventing the steel belt from swinging left and right relative to the female die and further improving the stamping precision; in addition, the convex block on the pressing plate can tightly press the edge of the steel belt on the connecting column, and the convex block on the pressing plate can increase the pressure of the pressing plate and the steel belt, so that the situation that the middle part of the steel belt is sunken downwards to cause buckling deformation can be avoided, when the second supporting plate pushes the pressing plate to move downwards, the situation that the rudiment of the gas generator shell stamped out on the steel belt enters the female die due to the buckling deformation of the steel belt is avoided, the stamping precision can be further improved, and the yield of the processed gas generator shell is improved.
Furthermore, the connecting plate is vertically and fixedly arranged on the lower surface of the pressing plate, the upper surface of the connecting column is provided with a first slot corresponding to the connecting plate, the connecting plate can be inserted into the first slot in a vertically movable manner, and the lower end of the connecting plate is connected with the bottom of the first slot through at least two cylindrical springs.
Wherein, when the lower surface of clamp plate offseted with the up end of spliced pole, the cylindrical spring in the first slot is in the state of being elongated, consequently when the steel band was located the up end of spliced pole, the clamp plate can compress tightly the steel band on the spliced pole.
Wherein, because feed mechanism is great to the drive power of steel band, even consequently the lug on the clamp plate compresses tightly the steel band on the spliced pole, the steel band still can be driven by feed mechanism and remove along the length direction of first backup pad.
Furthermore, the lug is hemispherical.
The hemispherical bumps can prevent the steel belt from being scratched.
Furthermore, the upper surface of first backup pad corresponds the spliced pole is provided with the second slot, the spliced pole can set up with reciprocating in the slot, just the bottom of spliced pole pass through cylindrical spring with the bottom of second slot is connected.
Wherein, the cylindrical spring in the second slot is used for supporting the spliced pole, can make the spliced pole can be in the pushing down of second backup pad downstream, simultaneously, when first backup pad shifts up, the cylindrical spring in the second slot can also promote the spliced pole to shift up to with the part support of being stamped out gas generator casing shape on the steel band from the die.
The elastic coefficient of the cylindrical spring in the second slot is far smaller than that of the cylindrical spring in the accommodating groove.
Further, feed mechanism including set up in unreel roller and conveyor in the frame, conveyor is located unreel the roller with between the lower mould, conveyor is including the first compression roller, second compression roller and the driving motor that set up from top to bottom, first compression roller and second compression roller rotationally set up in the frame, driving motor with first compression roller drive is connected and is used for the drive first compression roller rotates, the surface of first compression roller and second compression roller still the cladding has the rubber layer.
Wherein, the steel band rolling is on unreeling the roller, and driving motor is used for driving first compression roller and rotates, and then can drive the steel band and move at the interval between last mould and lower mould.
The principle and effect of the present invention will be further explained below with reference to the above technical solutions and the accompanying drawings:
in the utility model, the connecting plate on the connecting column can limit the left and right movement of the steel belt, thereby preventing the steel belt from swinging left and right relative to the female die and further improving the stamping precision; in addition, the pressing plate can press the edge of the steel belt on the connecting column, and the steel belt can be prevented from being warped and deformed due to downward sinking of the middle part of the steel belt due to the weight of the steel belt, so that when the second supporting plate pushes the pressing plate to move downwards, the blank of the gas generator shell punched on the steel belt cannot be influenced by the warping and deformation of the steel belt to enter the female die, the punching precision can be further improved, and the yield of the processed gas generator shell is improved.
Drawings
FIG. 1 is a schematic structural view of an airbag inflator housing stretch-forming system according to an embodiment of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic cross-sectional view of portion B of FIG. 1;
fig. 4 is a top view of the first supporting plate according to the embodiment of the present invention;
fig. 5 is a schematic cross-sectional view of a first supporting plate according to an embodiment of the present invention;
fig. 6 is a partially enlarged view of fig. 5.
Description of reference numerals:
1-frame, 21-first supporting plate, 211-second slot, 221-connecting column, 2211-first slot, 222-pressing plate, 2221-convex block, 223-connecting plate, 23-concave die, 31-second supporting plate, 311-accommodating groove, 312-baffle, 32-convex die, 4-lifting mechanism, 51-unwinding roller, 52-first pressing roller and 53-second pressing roller.
Detailed Description
To facilitate understanding of those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and examples:
as shown in fig. 1-6, a stretching forming system for an airbag inflator housing comprises a frame 1, wherein an upper die, a lower die and a feeding mechanism are arranged on the frame 1, the lower die is located right below the upper die, the lower die comprises a first support plate 21 in a long strip shape, a plurality of female dies 23 are sequentially and uniformly arranged on the surface of the first support plate 21 along the length direction of the first support plate, and the plurality of female dies 23 form a female die 23 group; the upper die comprises a second supporting plate 31, the upper surface of the second supporting plate 31 is vertically arranged on the rack 1 in a lifting way through a lifting mechanism 4, a plurality of male dies 32 are arranged on the lower surface of the second supporting plate 31 corresponding to the female dies 23, and the male dies 32 form male die 32 groups; the retaining column comprises a connecting column 221 vertically arranged on the first supporting plate 21 in a lifting manner, a pressure plate 222 is arranged above the connecting column 221, the pressure plate 222 is arranged on the connecting column 221 in a lifting manner through a connecting plate 223, and a projection 2221 is arranged in the middle of the lower surface of the pressure plate 222; the retaining column is located in the orthographic projection of the second support plate 31, the second support plate 31 corresponds to the retaining column and is provided with an accommodating groove 311 for accommodating the pressing plate 222, the depth of the accommodating groove 311 is greater than the thickness of the pressing plate 222, the thickness of the pressing plate 222 is greater than the thickness of the male die 32, a baffle 312 is arranged in the accommodating groove 311 in a vertically movable manner, and the upper surface of the baffle 312 is connected with the bottom of the accommodating groove 311 through a cylindrical spring.
Wherein, the female die set and the male die set are continuous dies.
The utility model discloses in, feed mechanism is used for carrying the steel band for the steel band is distance removal between last mould and lower mould, and wherein, when the steel band removed between last mould and lower mould, the lower surface laminating of steel band was at the up end of spliced pole 221, and the side laminating of steel band is at the medial surface of connecting plate 223, and lug 2221 on the clamp plate 222 compresses tightly on the steel band.
The utility model discloses the working process does: firstly, the feeding mechanism conveys the steel strip between the upper die and the lower die, then the lifting mechanism 4 drives the second support plate 31 to move downwards, in the process of moving downwards the second support plate 31, the baffle 312 in the accommodating groove 311 contacts with the pressing plate 222, then the pressing plate 222 is pushed to move downwards, further the steel strip and the connecting column 221 are pushed to move downwards and press the steel strip on the first support plate 21, as the second support plate 31 continues to move downwards to be attached to the first support plate 21, the cylindrical spring in the accommodating groove 311 is compressed, the bump 2221 on the pressing plate 222 further presses the edge of the steel strip on the first support plate 21, meanwhile, the male die 32 contacts with the steel strip and completes the punching process of the steel strip contacted with the male die 23, one punching operation is completed, then the second support plate 31 moves upwards to reset, the connecting column 221 pushes the steel strip to move upwards, so that the part punched out of the steel strip and having the shape of the gas generator shell leaves the female die 23, then the feed mechanism drives the steel belt to move at a fixed distance once, then the second supporting plate 31 moves down again to complete the next stamping operation, and so on, and the steel belt is continuously stamped to obtain the gas generator shell.
Wherein, the lifting mechanism 4 comprises a plurality of hydraulic cylinders, and the hydraulic cylinders move synchronously to drive the second supporting plate 31 to move up and down.
In the utility model, the connecting plate 223 on the connecting column 221 can limit the steel belt to move left and right, thereby preventing the steel belt from swinging left and right relative to the female die 23 and further improving the stamping precision; in addition, the convex 2221 on the pressing plate 222 can press the edge of the steel strip onto the connecting column 221, and the convex 2221 on the pressing plate 222 can increase the pressure between the pressing plate 222 and the steel strip, so that the steel strip can be prevented from sliding towards the middle part due to the fact that the two side edges of the steel strip are pulled by the weight of the steel strip, and further the situation that the middle part of the steel strip is sunken downwards to cause buckling deformation can be avoided, therefore, when the second supporting plate 31 pushes the pressing plate 222 to move downwards, the blank of the gas generator shell punched on the steel strip cannot be influenced by the buckling deformation of the steel strip to enter the concave die 23, the punching precision can be further improved, and the yield of the processed gas generator shell can be improved.
In one embodiment, the connecting plate 223 is vertically and fixedly disposed on the lower surface of the pressing plate 222, the upper surface of the connecting column 221 is provided with a first slot 2211 corresponding to the connecting plate 223, the connecting plate 223 is inserted into the first slot 2211 in a vertically movable manner, and the lower end of the connecting plate 223 is connected to the bottom of the first slot 2211 through at least two cylindrical springs.
When the lower surface of the pressing plate 222 abuts against the upper end surface of the connecting column 221, the cylindrical spring in the first slot 2211 is in a stretched state, so that when the steel strip is located at the upper end surface of the connecting column 221, the pressing plate 222 can press the steel strip against the connecting column 221.
Since the driving force of the feeding mechanism to the steel belt is large, even if the protrusion 2221 of the pressing plate 222 presses the steel belt against the connecting column 221, the steel belt can still be driven by the feeding mechanism to move along the length direction of the first supporting plate 21.
In one embodiment, the protrusions 2221 are hemispherical.
The hemispherical protrusions 2221 can prevent the steel band from being scratched.
In one embodiment, the upper surface of the first supporting plate 21 is provided with a second slot 211 corresponding to the connecting column 221, the connecting column 221 is movably disposed in the slot up and down, and the bottom of the connecting column 221 is connected to the bottom of the second slot 211 through a cylindrical spring.
Wherein, the cylinder spring in the second slot 211 is used for supporting the connecting column 221, can make the connecting column 221 move downwards under the pushing down of the second supporting plate 31, and simultaneously, when the first supporting plate 21 moves upwards, the cylinder spring in the second slot 211 can also push the connecting column 221 to move upwards, thereby the part of being punched out of the shape of the gas generator shell on the steel strip is supported away from the die 23.
The elastic coefficient of the cylindrical spring in the second slot 211 is much smaller than that of the cylindrical spring in the receiving slot 311.
According to one embodiment, the feeding mechanism comprises an unwinding roller 51 and a conveying device which are arranged on the rack 1, the conveying device is located between the unwinding roller 51 and the lower die, the conveying device comprises a first pressing roller 52, a second pressing roller 53 and a driving motor which are arranged up and down, the first pressing roller 52 and the second pressing roller 53 are rotatably arranged on the rack 1, the driving motor is in driving connection with the first pressing roller 52 and used for driving the first pressing roller 52 to rotate, and the surfaces of the first pressing roller 52 and the second pressing roller 53 are further coated with rubber layers.
The steel belt is wound on the unwinding roller 51, and the driving motor is used for driving the first pressing roller 52 to rotate, so that the steel belt can be driven to move between the upper die and the lower die at a fixed distance.
The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (5)
1. A stretching forming system for a safety airbag gas generator shell comprises a rack, wherein an upper die, a lower die and a feeding mechanism are arranged on the rack, the lower die is positioned under the upper die and comprises a first strip-shaped supporting plate, a plurality of female dies are sequentially and uniformly arranged on the surface of the first supporting plate along the length direction of the first supporting plate, and the female dies form a female die set; the upper die comprises a second supporting plate, the upper surface of the second supporting plate is vertically arranged on the rack in a lifting mode through a lifting mechanism, a plurality of convex dies are arranged on the lower surface of the second supporting plate corresponding to the concave dies, and the convex dies form a convex die set; the bumping post is located in the orthographic projection of second backup pad, the second backup pad corresponds the bumping post is provided with and is used for holding the holding tank of clamp plate, the degree of depth of holding tank is greater than the thickness of clamp plate, the thickness of clamp plate is greater than the thickness of terrace die, can be provided with the baffle with reciprocating in the holding tank, the upper surface of baffle pass through cylindrical spring with the bottom of holding tank is connected.
2. The stretch forming system for an airbag inflator housing according to claim 1, wherein the connecting plate is vertically and fixedly disposed on a lower surface of the pressing plate, an upper surface of the connecting post is provided with a first slot corresponding to the connecting plate, the connecting plate is inserted into the first slot so as to be movable up and down, and a lower end of the connecting plate is connected to a bottom of the first slot through a cylindrical spring.
3. The stretch-forming system of an airbag inflator housing of claim 1 wherein the projections are hemispherical.
4. The stretch forming system for an airbag inflator housing according to claim 1, wherein a second slot is provided on an upper surface of the first support plate in correspondence to the connection column, the connection column is provided in the slot so as to be movable up and down, and a bottom of the connection column is connected to a bottom of the second slot through a cylindrical spring.
5. The stretch forming system of an airbag inflator housing according to claim 1, wherein the feeding mechanism includes an unwinding roller and a conveying device disposed on the frame, the conveying device is disposed between the unwinding roller and the lower mold, the conveying device includes a first pressing roller, a second pressing roller, and a driving motor disposed up and down, the first pressing roller and the second pressing roller are rotatably disposed on the frame, the driving motor is drivingly connected with the first pressing roller to drive the first pressing roller to rotate, and surfaces of the first pressing roller and the second pressing roller are further covered with a rubber layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021549087.5U CN212917261U (en) | 2020-07-30 | 2020-07-30 | Stretching forming system for safety air bag gas generator shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021549087.5U CN212917261U (en) | 2020-07-30 | 2020-07-30 | Stretching forming system for safety air bag gas generator shell |
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| Publication Number | Publication Date |
|---|---|
| CN212917261U true CN212917261U (en) | 2021-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021549087.5U Active CN212917261U (en) | 2020-07-30 | 2020-07-30 | Stretching forming system for safety air bag gas generator shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212917261U (en) |
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2020
- 2020-07-30 CN CN202021549087.5U patent/CN212917261U/en active Active
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