A punching device for processing automobile airbag diffuser

Abstract

The present invention discloses a punching device for processing an automotive airbag diffuser, which relates to the technical field of punching processing. The punching device includes a support base. A workbench is detachably and fixedly installed at the upper end of the support base. An installation cavity is recessed downward at the central position of the upper end of the workbench. A circular contraction cavity is provided on the bottom plate of the installation cavity. The diffuser body is placed in the installation cavity. A concave frame is fixedly connected to the upper end of the workbench. A telescopic oil cylinder is fixedly installed at the upper end of the concave frame. A punching mechanism is arranged at the lower end of the telescopic oil cylinder. The beneficial effect of the present invention is that when punching the diffuser body, first, the diffuser body is clamped in the installation cavity. The piston rod of the telescopic oil cylinder drives the pressing head to insert downward into the diffuser body to squeeze and fix the diffuser body. The punching head in the punching mechanism slides outward along the through hole, so that the punching head performs punching operations on the side surface of the diffuser body.

Description

Technical Field

[0001] The invention relates to the technical field of punching processing, in particular to a punching device for processing a diffuser of an automobile safety airbag. Background Art

[0002] The airbag diffuser is an important component of the gas generator. It houses the detonator, detonator charge, filter and other components. It is used to guide the gas generated in the gas generator to diffuse into the airbag to inflate the airbag. During the processing of the diffuser, the stamped diffuser needs to be side-punched.

[0003] Since the diffuser in the airbag has very high requirements, the size and position accuracy of the side punching holes are very strict. At present, when punching a batch of diffuser side holes, the size and position of the punched products need to be checked in stages before, during and after the processing to see if there are any defects. If there are no defects, the batch punching operation will continue. If it is found that there are no side punching holes or the side punching holes are too small, the operator needs to be notified to repair them to avoid producing a large number of defective products. The existing airbag diffuser side hole detection method is to perform manual inspection after the punching is completed, but the manual inspection error is large, especially after long-term work, fatigue is prone to occur, which affects the efficiency and quality of the inspection, and the inspection takes a long time, which greatly affects the work efficiency. Summary of the invention

[0004] The object of the present invention is to provide a punching device for processing an automobile airbag diffuser to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a punching device for processing an automobile airbag diffuser, comprising a supporting base, a workbench is detachably fixedly installed on the upper end of the supporting base, a mounting cavity is formed in a downwardly recessed central position of the upper end of the workbench, a circular contraction cavity is formed on the bottom plate of the mounting cavity, a diffuser body is placed in the mounting cavity, a concave frame is fixedly connected to the upper end of the workbench, a telescopic oil cylinder is fixedly installed on the upper end of the concave frame, a punching mechanism is provided at the lower end of the telescopic oil cylinder, a circular protrusion is protruded downward at the lower end of the workbench, a feeding mechanism is installed on the circular protrusion, a plurality of through grooves are formed in a circular array at the upper end of the workbench, a plurality of marking grooves are formed in a circular array in the workbench, the through grooves and the marking grooves are alternately distributed, a side hole detection mechanism is installed in the through groove, and a marking mechanism is installed in the marking groove;

[0006] The side hole detection mechanism includes an L-shaped transmission seat slidably mounted at the lower end of the through slot, a driving mechanism is mounted at the lower end of the L-shaped transmission seat, the driving mechanism is mounted on the supporting base, a protective shell is fixedly mounted on the L-shaped transmission seat, a rectangular slot is opened at one end of the protective shell, a detection round rod is inserted through the rectangular slot, and a warning mechanism for indicating that the side hole is unqualified is installed at the end of the detection round rod away from the detection end through the protective shell;

[0007] A compression sleeve and a contraction spring are sequentially sleeved on the detection round rod. The compression sleeve is fixedly connected to the detection round rod. Two ends of the contraction spring are respectively in contact with the compression sleeve and the inner wall of the rectangular groove. A sealing cover is installed at one end of the protective shell.

[0008] Preferably, the punching mechanism comprises a pressing head fixedly mounted on the lower end of the piston rod of the telescopic oil cylinder, the upper end of the pressing head is recessed downward and provided with a working circular groove, the lower end of the pressing head is provided with a plurality of movable grooves in a ring array, a rectangular block is slidably mounted in each movable groove, a punching head is fixedly connected to the side of the rectangular block, a reset spring is provided on the upper sleeve of the punching head, a through hole is penetrated outwardly through the side of the movable groove, the punching head is slidably connected to the through hole, a driving block is fixedly connected to the side of the rectangular block away from the punching head, and one end of the driving block passes through the movable groove and extends into the working circular groove;

[0009] A punching cylinder is fixedly installed on the upper end of the working circular groove, and an extrusion block is fixedly installed on the lower end of the piston rod of the punching cylinder. The outer side of the lower end of the extrusion block is a slope, and the upper end of the driving block is a slope.

[0010] Preferably, the unloading mechanism includes a pushing cylinder fixedly mounted on the lower end of the circular protrusion at the bottom of the workbench, the piston rod of the pushing cylinder extends into the circular contraction cavity and is fixedly connected to the lower end of the unloading plate, and the unloading plate is clamped in the circular contraction cavity.

[0011] Preferably, a plurality of communication holes are provided on the inner side wall of the through groove, the communication holes are communicated with the installation cavity, and the detection round rod is slidably connected with the communication holes.

[0012] Preferably, the upper end of the support base is recessed downward to form a circular groove, the upper end of the circular groove is provided with an annular groove, the circular protrusion at the lower end of the workbench extends downward into the circular groove, the driving mechanism comprises an annular transmission plate rotatably mounted in the circular groove, the upper end of the annular transmission plate is provided with a plurality of oblique grooves penetrating downward in an annular array, a gear ring is fixedly sleeved on the outer side of the annular transmission plate, a driving gear is meshed with a side surface of the gear ring, and the driving gear is driven by a motor shaft of a stepping motor fixedly mounted at the lower end of the support base;

[0013] An annular fixing plate is fixedly installed in the annular groove, and a plurality of convex guide grooves are provided in an annular array on the inner side of the annular fixing plate. A convex sliding block is slidably installed in each convex guiding groove, and a transmission column is fixedly connected to the lower end of each convex sliding block.

[0014] Preferably, the upper end of the annular transmission plate is in rotational contact with the lower end of the annular fixed plate, the annular transmission plate and the annular fixed plate are both sleeved on the circular protrusion, the annular transmission plate is in rotational contact with the circular protrusion, the transmission column is inserted downward into the inclined groove, and the transmission column is slidably connected to the inclined groove.

[0015] Preferably, the upper end of the convex sliding block is fixedly connected to the lower end of the L-shaped transmission seat, and the lower end of the L-shaped transmission seat is in sliding contact with the upper end of the annular fixing plate.

[0016] Preferably, a socket is provided at the end of the detection round rod away from the detection end, and the warning mechanism includes an inner rod slidably inserted in the socket, and the end of the inner rod outside the socket is fixedly connected to a push plate, and a plurality of trigger springs are fixedly installed in a circular array on the side of the push plate close to the inner rod, a first power-connecting copper sheet is fixedly installed on the side of the push plate away from the inner rod, a second power-connecting copper sheet is fixedly installed on the inner side wall of the L-shaped transmission seat, and a plurality of warning lights are installed in a circular array on the upper end of the workbench, and the plurality of warning lights are installed one-to-one in the vicinity of the plurality of through grooves.

[0017] Preferably, the marking mechanism includes an electric telescopic rod installed in the marking groove, the end of the movable rod of the electric telescopic rod is fixedly installed with a mounting sleeve, a marking pen is installed in the mounting sleeve, an extension hole is opened at one end of the marking groove, the extension hole is connected with the mounting cavity, and the marking end of the marking pen can pass through the extension hole and be inserted into the mounting cavity.

[0018] Compared with the prior art, the invention has the following advantages:

[0019] 1. When punching the diffuser body, first clamp the diffuser body in the installation cavity, and drive the down-pressing head downward into the diffuser body through the piston rod of the telescopic oil cylinder to squeeze and fix the diffuser body; the punching head in the punching mechanism slides outward along the through hole, so that the punching head punches the side of the diffuser body; when the piston rod of the punching cylinder contracts upward, it drives the extrusion block to move upward, and the punching head contracts into the down-pressing head under the action of the elastic force of the return spring; then the piston rod of the telescopic oil cylinder drives the down-pressing head to move upward, so that the down-pressing head moves out from the inner cavity of the diffuser body, thereby completing the punching operation of the diffuser body.

[0020] 2. When it is necessary to inspect the side holes of the diffuser body, the driving mechanism drives the L-shaped transmission seat and the protective shell to slide inward along the through groove, so that the detection round rod in the side hole detection mechanism is inserted into the connecting hole, and the detection round rod is inserted into the side hole of the diffuser body; when the side hole of the diffuser body meets the requirements, the alarm light will not light up; when the side hole of the diffuser body is small and does not meet the requirements, the entire circuit is connected, and the alarm light lights up at this time, reminding the staff that the side hole of the diffuser body at this position is unqualified; at the same time, the marking pen in the marking mechanism is used to mark the vicinity of the unqualified side hole on the side of the diffuser body, so that subsequent staff can find the location of the unqualified side hole, thereby facilitating maintenance.

[0021] 3. After the side hole detection of the diffuser body is completed, the driving mechanism, the side hole detection mechanism and the warning return to their original positions, and then the piston rod of the push cylinder drives the unloading plate to move upward, and the unloading plate drives the diffuser body to move upward along the installation cavity, thereby pushing the diffuser body out of the installation cavity, thereby facilitating the unloading of the diffuser body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional diagram of the punching device structure for processing the automobile airbag diffuser of the present invention;

[0023] Figure 2 This is a cross-sectional view of the structure of the punching device for processing the diffuser of the automobile safety airbag of the present invention;

[0024] Figure 3 This is an exploded view of the structure of the pressing head and the punching mechanism of the present invention;

[0025] Figure 4 It is a cross-sectional view of the workbench structure of the present invention;

[0026] Figure 5 It is a cross-sectional view of the support base, workbench, drive mechanism and side hole detection mechanism of the present invention;

[0027] Figure 6 for Figure 5 A is an enlarged schematic diagram of the structure;

[0028] Figure 7 This is a cross-sectional view of the round rod structure detected by the present invention;

[0029] Figure 8 It is an exploded view of the supporting base, workbench, driving mechanism, side hole detection mechanism and blanking mechanism of the present invention;

[0030] Fig. 9 It is an exploded view of the side hole detection mechanism and warning mechanism structure of the present invention.

[0031] In the figure: 1. Support base; 11. Circular groove; 12. Annular groove; 13. Workbench; 14. Mounting cavity; 15. Circular contraction cavity; 16. Through groove; 17. Marking groove; 18. Diffuser body; 2. Concave frame; 21. Telescopic cylinder; 22. Down pressure head; 23. Working circular groove; 24. Movable groove; 3. Punching cylinder; 31. Extrusion block; 32. Rectangular block; 33. Punching head; 34. Reset spring; 35. Driving block; 4. Pushing cylinder; 41. Unloading plate; 5. Annular transmission Moving plate; 51. Bevel groove; 52. Gear ring; 53. Driving gear; 54. Annular fixing plate; 55. Convex guide groove; 56. Convex slider; 57. Transmission column; 6. L-shaped transmission seat; 61. Protective shell; 62. Rectangular groove; 7. Detection round rod; 71. Socket; 72. Compression sleeve; 73. Contraction spring; 8. Inner rod; 81. Push plate; 82. Trigger spring; 83. First power-connecting copper sheet; 84. Second power-connecting copper sheet; 85. Alarm light; 9. Electric telescopic rod; 91. Marking pen. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figures 1 to 9 The present invention provides a technical solution: a punching device for processing an automobile airbag diffuser, comprising a support base 1, a plurality of support legs are fixedly installed at the lower end of the support base 1, a workbench 13 is detachably fixedly installed at the upper end of the support base 1, a mounting cavity 14 is recessed downward at the center position of the upper end of the workbench 13, a circular contraction cavity 15 is opened on the bottom plate of the mounting cavity 14, a diffuser body 18 is placed in the mounting cavity 14, a concave frame 2 is fixedly connected to the upper end of the workbench 13, a telescopic Cylinder 21, a punching mechanism is provided at the lower end of the telescopic cylinder 21, a circular protrusion is protruding downward at the lower end of the workbench 13, a feeding mechanism is installed on the circular protrusion, a plurality of through grooves 16 are provided in a circular array at the upper end of the workbench 13, a plurality of marking grooves 17 are provided in a circular array inside the workbench 13, the through grooves 16 and the marking grooves 17 are alternately distributed, the number of the through grooves 16 and the marking grooves 17 is the same as the number of the side holes of the diffuser body 18, a side hole detection mechanism is installed in the through groove 16, and a marking mechanism is installed in the marking groove 17.

[0034] See also Figures 1 to 3The punching mechanism includes a pressing head 22 fixedly mounted on the lower end of the piston rod of the telescopic oil cylinder 21, the upper end of the pressing head 22 is recessed downward and has a working circular groove 23, the lower end of the pressing head 22 is provided with a plurality of movable grooves 24 in a ring array, a rectangular block 32 is slidably mounted in each movable groove 24, a punching head 33 is fixedly connected to the side of the rectangular block 32, a reset spring 34 is provided on the upper sleeve of the punching head 33, a through hole is penetrated outwardly through the side of the movable groove 24, the punching head 33 is slidably connected to the through hole, a driving block 35 is fixedly connected to the side of the rectangular block 32 away from the punching head 33, one end of the driving block 35 passes through the movable groove 24 and extends into the working circular groove 23;

[0035] The upper end of the working circular groove 23 is fixedly mounted with a punching cylinder 3, and the lower end of the piston rod of the punching cylinder 3 is fixedly mounted with an extrusion block 31. The outer side of the lower end of the extrusion block 31 is a sloped surface, and the upper end of the driving block 35 is a sloped surface.

[0036] When punching, first clamp the diffuser body 18 in the installation cavity 14, and drive the pressing head 22 downward into the diffuser body 18 through the piston rod of the telescopic oil cylinder 21 until the bottom of the pressing head 22 contacts the bottom plate of the inner cavity of the diffuser body 18, thereby squeezing and fixing the diffuser body 18;

[0037] The piston rod of the punching cylinder 3 drives the extrusion block 31 to slide downward along the working circular groove 23. The lower end of the extrusion block 31 slides and squeezes the driving block 35. The driving block 35 is pushed to shrink into the movable groove 24 by the extrusion block 31. The driving block 35 pushes the punching head 33 to slide outward along the through hole through the rectangular block 32, so that the punching head 33 punches the diffuser body 18. When the rectangular block 32 slides along the movable groove 24, the return spring 34 is squeezed.

[0038] When the piston rod of the punching cylinder 3 contracts upward, the extrusion block 31 moves upward, and the rectangular block 32 slides back under the elastic force of the return spring 34, so that the punching head 33 contracts inside the downward pressure head 22;

[0039] The piston rod of the telescopic oil cylinder 21 then drives the pressing head 22 to move upward, so that the pressing head 22 is moved out of the inner cavity of the diffuser body 18 , thereby completing the punching operation of the diffuser body 18 .

[0040] See also Figure 5 and Figure 8 The unloading mechanism includes a pushing cylinder 4 fixedly installed at the lower end of the circular protrusion at the bottom of the workbench 13. The piston rod of the pushing cylinder 4 extends into the circular contraction cavity 15 and is fixedly connected to the lower end of the unloading plate 41. The unloading plate 41 is clamped in the circular contraction cavity 15.

[0041] The lower end of the diffuser body 18 contacts the upper end of the blanking plate 41. When blanking is required, the blanking plate 41 is driven upward by the piston rod of the pushing cylinder 4, and the blanking plate 41 drives the diffuser body 18 to move upward along the installation cavity 14, thereby pushing the diffuser body 18 out of the installation cavity 14, thereby facilitating the blanking of the diffuser body 18.

[0042] See also Figure 2 , Figures 4 to 6 , Fig. 9 The side hole detection mechanism includes an L-shaped transmission seat 6 slidably mounted at the lower end of the through slot 16, a driving mechanism is mounted at the lower end of the L-shaped transmission seat 6, and the driving mechanism is mounted on the supporting base 1. A protective shell 61 is fixedly mounted on the L-shaped transmission seat 6, and a rectangular groove 62 is opened at one end of the protective shell 61. A detection round rod 7 is inserted through the rectangular groove 62, and an end of the detection round rod 7 away from the detection end passes through the protective shell 61 and is installed with a warning mechanism for indicating that the side hole is unqualified;

[0043] A compression sleeve 72 and a contraction spring 73 are sequentially sleeved on the detection rod 7. The compression sleeve 72 is fixedly connected to the detection rod 7. Both ends of the contraction spring 73 are respectively in contact with the compression sleeve 72 and the inner wall of the rectangular groove 62. A sealing cover is installed at one end of the protective shell 61. The sealing cover is sleeved on the detection rod 7. The detection rod 7 is slidably connected to the protective shell 61 and the sealing cover respectively.

[0044] A plurality of communication holes are formed on the inner side wall of the through slot 16 , the communication holes are connected to the installation cavity 14 , the detection round rod 7 is slidably connected to the communication holes, and the detection round rod 7 can extend along the communication holes into the installation cavity 14 .

[0045] See also Figure 2 , Figure 5 and Figure 8 The upper end of the support base 1 is recessed downward to form a circular groove 11, and the upper end of the circular groove 11 is provided with an annular groove 12. The circular protrusion at the lower end of the workbench 13 extends downward into the circular groove 11. The driving mechanism includes an annular transmission plate 5 rotatably mounted in the circular groove 11, and the upper end of the annular transmission plate 5 is provided with a plurality of inclined grooves 51 extending downward in an annular array. A gear ring 52 is fixedly sleeved on the outer side of the annular transmission plate 5, and a driving gear 53 is meshed with the side of the gear ring 52. The driving gear 53 is driven by the motor shaft of a stepping motor fixedly mounted at the lower end of the support base 1;

[0046] An annular fixing plate 54 is fixedly installed in the annular groove 12, and a plurality of convex guide grooves 55 are provided in an annular array on the inner side of the annular fixing plate 54. A convex sliding block 56 is slidably installed in each convex guiding groove 55, and a transmission column 57 is fixedly connected to the lower end of each convex sliding block 56.

[0047] The upper end of the annular drive plate 5 is in rotational contact with the lower end of the annular fixing plate 54. Both the annular drive plate 5 and the annular fixing plate 54 are sleeved on the circular convex portion, and the annular drive plate 5 is in rotational contact with the circular convex portion. The drive post 57 is inserted downward into the inclined slot 51, and the drive post 57 is slidably connected to the inclined slot 51.

[0048] The upper end of the convex slider 56 is fixedly connected to the lower end of the L-shaped drive seat 6, and the lower end of the L-shaped drive seat 6 is in sliding contact with the upper end of the annular fixing plate 54.

[0049] In the initial state, the drive post 57 is at the outermost end of the inclined slot 51. When it is necessary to detect the side hole of the diffuser body 18, the drive gear 53 is driven to rotate by the motor shaft of the stepper motor. The drive gear 53 drives the annular drive plate 5 to rotate through the gear ring 52. The inclined slot 51 of the annular drive plate 5 slides along the drive post 57, causing the drive post 57 to move from the outermost end to the innermost end of the inclined slot 51. At the same time, the drive post 57 is pushed to move inward, and the drive post 57 drives the convex slider 56 to slide inward along the convex guiding slot 55;

[0050] The convex slider 56 drives the L-shaped drive seat 6 and the protective shell 61 to slide inward along the through slot 16. The protective shell 61 drives the detection round rod 7 to insert into the communication hole, so that the detection round rod 7 is inserted into the side hole of the diffuser body 18;

[0051] When the side hole of the diffuser body 18 meets the requirements, the detection round rod 7 can just be inserted into the side hole;

[0052] When the side hole of the diffuser body 18 is smaller and does not meet the requirements, the detection round rod 7 cannot be inserted into the side hole. At this time, the end of the detection round rod 7 will abut against the side surface of the diffuser body 18. When the L-shaped drive seat 6 and the protective shell 61 continue to move inward along the through slot 16, since one end of the detection round rod 7 abuts against the diffuser body 18, the detection round rod 7 will remain stationary, so that the detection end of the detection round rod 7 moves into the protective shell 61, and the other end of the detection round rod 7 moves out of the protective shell 61.

[0053] Please refer to Figure 1 、 Figure 2 、 Figure 6 、 Figure 7 and Fig. 9A socket 71 is provided at the end of the detection round rod 7 away from the detection end, and the warning mechanism includes an inner rod 8 slidably inserted in the socket 71, and the end of the inner rod 8 outside the socket 71 is fixedly connected to a push plate 81, and a plurality of trigger spring pieces 82 are fixedly installed in a circular array on the side of the push plate 81 close to the inner rod 8, and a first power-connecting copper sheet 83 is fixedly installed on the side of the push plate 81 away from the inner rod 8, and a second power-connecting copper sheet 84 is fixedly installed on the inner side wall of the L-shaped transmission seat 6, and a plurality of warning lights 85 are installed in a circular array on the upper end of the workbench 13, and the plurality of warning lights 85 are installed one by one in the vicinity of the plurality of through slots 16.

[0054] See also Figure 2 and Figure 4 The marking mechanism includes an electric telescopic rod 9 installed in the marking groove 17, and a mounting sleeve is fixedly installed at the end of the movable rod of the electric telescopic rod 9, and a marking pen 91 is installed in the mounting sleeve. An extension hole is opened at one end of the marking groove 17, and the extension hole is connected with the mounting cavity 14. The marking end of the marking pen 91 can pass through the extension hole and be inserted into the mounting cavity 14.

[0055] The electric telescopic rod 9 is detachably connected to the marking groove 17, and the mounting sleeve is detachably fixedly connected to the marking pen 91. When the electric telescopic rod 9 is extended or retracted, the marking pen 91 is driven to extend or retract, so that the marking end of the marking pen 91 first extends into the mounting cavity 14, marks the side of the diffuser body 18, and then is retracted.

[0056] The first power copper sheet 83 and the second power copper sheet 84 are symmetrically arranged. The first power copper sheet 83 is connected in series with one end of the power supply through a wire. The other end of the power supply is connected in series with an electric push rod controller, an alarm light 85, and a second power copper sheet 84 through a wire. The electric push rod controller is used to control the extension and retraction of the electric telescopic rod 9. When the electric push rod controller is powered once, the electric telescopic rod 9 is controlled to extend and retract once.

[0057] When the first copper plate 83 and the second copper plate 84 are not in contact, the entire circuit is in an open state;

[0058] When the first power-connecting copper sheet 83 and the second power-connecting copper sheet 84 are in contact, the entire circuit is connected. At this time, the alarm light 85 lights up to remind the staff that the side hole of the diffuser body 18 at this position is unqualified. At the same time, the electric push rod controller controls the electric telescopic rod 9 to extend and retract once, and the electric telescopic rod 9 drives the marking pen 91 to move forward to mark the vicinity of the unqualified side hole on the side of the diffuser body 18, so as to facilitate subsequent staff to find the position of the unqualified side hole, thereby facilitating maintenance.

[0059] When the first copper sheet 83 and the second copper sheet 84 come into contact, if the L-shaped transmission seat 6 continues to drive the second copper sheet 84 to squeeze the first copper sheet 83, the first copper sheet 83 pushes the inner rod 8 to move through the push plate 81, so that the inner rod 8 is inserted into the insertion hole 71, thereby preventing the first copper sheet 83 and the second copper sheet 84 from being damaged due to excessive squeezing force;

[0060] When the push plate 81 moves, the trigger spring sheet 82 is squeezed, and the trigger spring sheet 82 plays a buffering protection role under the action of the elastic force of the trigger spring sheet 82, and at the same time, the first copper sheet 83 and the second copper sheet 84 are always in contact. When the first copper sheet 83 and the second copper sheet 84 are separated, the first copper sheet 83 is reset under the action of the elastic force of the trigger spring sheet 82.

[0061] Working principle: When punching the diffuser body 18, first clamp the diffuser body 18 in the installation cavity 14, and then drive the down-pressing head 22 to be inserted downward into the diffuser body 18 by the piston rod of the telescopic oil cylinder 21 to squeeze and fix the diffuser body 18;

[0062] The piston rod of the punching cylinder 3 drives the extrusion block 31 to move downward and retracts the extrusion drive block 35 into the movable groove 24. The drive block 35 pushes the punching head 33 to slide outward along the through hole through the rectangular block 32, so that the punching head 33 punches the side of the diffuser body 18. When the rectangular block 32 slides along the movable groove 24, it squeezes the return spring 34.

[0063] When the piston rod of the punching cylinder 3 contracts upward, the extrusion block 31 moves upward, and the rectangular block 32 slides back under the elastic force of the return spring 34, so that the punching head 33 contracts inside the downward pressure head 22;

[0064] The piston rod of the telescopic oil cylinder 21 then drives the pressing head 22 to move upward, so that the pressing head 22 is moved out of the inner cavity of the diffuser body 18 , thereby completing the punching operation of the diffuser body 18 .

[0065] When the side hole of the diffuser body 18 needs to be inspected, the motor shaft of the stepping motor drives the driving gear 53 to rotate, and the driving gear 53 drives the annular transmission plate 5 to rotate through the gear ring 52, so that the transmission column 57 moves from the outermost end to the innermost end of the inclined groove 51, and the convex slider 56 is driven by the transmission column 57 to slide inward along the convex guide groove 55;

[0066] The convex slider 56 drives the L-shaped transmission seat 6 and the protective shell 61 to slide inward along the through groove 16, and the protective shell 61 drives the detection round rod 7 to be inserted into the connecting hole, so that the detection round rod 7 is inserted into the side hole of the diffuser body 18;

[0067] When the side hole of the diffuser body 18 meets the requirements, the detection round rod 7 can just be inserted into the side hole, at this time, the first power-connecting copper sheet 83 and the second power-connecting copper sheet 84 are not in contact, and the alarm light 85 will not light up;

[0068] When the side hole of the diffuser body 18 is too small to meet the requirements, the detection rod 7 cannot be inserted into the side hole. At this time, when the L-shaped transmission seat 6 and the protective shell 61 continue to move inward along the through groove 16, the detection rod 7 will not move synchronously, so that the detection end of the detection rod 7 moves into the protective shell 61, and the other end of the detection rod 7 moves out of the protective shell 61;

[0069] At this time, the L-shaped transmission seat 6 drives the second copper sheet 84 to abut against the first copper sheet 83, so that the second copper sheet 84 and the first copper sheet 83 are in contact, and the entire circuit is connected. At this time, the alarm light 85 lights up to remind the staff that the side hole of the diffuser body 18 at this position is unqualified. The multiple alarm lights 85 arranged on the workbench 13 play an indicating role, that is, the position where the alarm light 85 lights up indicates that the side hole of the diffuser body 18 at the corresponding position is unqualified.

[0070] At the same time, the electric push rod controller controls the electric telescopic rod 9 to extend and retract once, and the electric telescopic rod 9 drives the marking pen 91 to move forward to mark the vicinity of the unqualified side hole on the side of the diffuser body 18, making it convenient for subsequent staff to find the location of the unqualified side hole, thereby facilitating maintenance.

[0071] When the side hole detection of the diffuser body 18 is completed, the motor shaft of the stepper motor drives the driving gear 53 to rotate in the opposite direction, so that the annular transmission plate 5 rotates in the opposite direction, and the transmission column 57 moves from the innermost end to the outermost end of the inclined groove 51. The convex slider 56 is driven by the transmission column 57 to slide outward along the convex guide groove 55, so that the side hole detection mechanism moves back, and the detection round rod 7 is retracted from the installation cavity 14 and moved into the through groove 16, so that the driving mechanism, the side hole detection mechanism, and the warning return to their original positions.

[0072] The piston rod of the push cylinder 4 then drives the blanking plate 41 to move upward, and the blanking plate 41 drives the diffuser body 18 to move upward along the installation cavity 14, thereby pushing the diffuser body 18 out of the installation cavity 14, thereby facilitating the blanking of the diffuser body 18.

[0073] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A punching device for processing an automobile airbag diffuser, comprising a support base (1), characterized in that: A workbench (13) is detachably fixedly mounted on the upper end of the support base (1), a mounting cavity (14) is formed in a downwardly recessed central position on the upper end of the workbench (13), a circular contraction cavity (15) is formed on the bottom plate of the mounting cavity (14), a diffuser body (18) is placed in the mounting cavity (14), a concave frame (2) is fixedly connected to the upper end of the workbench (13), a telescopic oil cylinder (21) is fixedly mounted on the upper end of the concave frame (2), a punching mechanism is provided at the lower end of the telescopic oil cylinder (21), a circular protrusion is protruded downwardly from the lower end of the workbench (13), a feeding mechanism is installed on the circular protrusion, a plurality of through grooves (16) are formed in a circular array on the upper end of the workbench (13), a plurality of marking grooves (17) are formed in a circular array in the workbench (13), the through grooves (16) and the marking grooves (17) are alternately distributed, a side hole detection mechanism is installed in the through groove (16), and a marking mechanism is installed in the marking groove (17); The side hole detection mechanism comprises an L-shaped transmission seat (6) slidably mounted at the lower end of the through groove (16), a driving mechanism being mounted at the lower end of the L-shaped transmission seat (6), the driving mechanism being mounted on the support base (1), a protective shell (61) being fixedly mounted on the L-shaped transmission seat (6), one end of the protective shell (61) being provided with a rectangular groove (62), a detection round rod (7) being inserted through the rectangular groove (62), and an end of the detection round rod (7) away from the detection end passing through the protective shell (61) being provided with a warning mechanism for indicating that the side hole is unqualified; A compression sleeve (72) and a contraction spring (73) are sequentially sleeved on the detection round rod (7); the compression sleeve (72) is fixedly connected to the detection round rod (7); two ends of the contraction spring (73) are respectively in contact with the compression sleeve (72) and the inner side wall of the rectangular groove (62); and a sealing cover is installed at one end of the protective shell (61).

2. The punching device for processing an automobile airbag diffuser according to claim 1, characterized in that: The punching mechanism comprises a pressing head (22) fixedly mounted at the lower end of a piston rod of a telescopic oil cylinder (21); the upper end of the pressing head (22) is recessed downward and has a working circular groove (23); the lower end of the pressing head (22) is provided with a plurality of movable grooves (24) in a ring array; a rectangular block (32) is slidably mounted in each movable groove (24); a punching head (33) is fixedly connected to the side of the rectangular block (32); a return spring (34) is provided on the upper sleeve of the punching head (33); a through hole is penetrated outwardly through the side of the movable groove (24); the punching head (33) is slidably connected to the through hole; a driving block (35) is fixedly connected to the side of the rectangular block (32) away from the punching head (33); one end of the driving block (35) passes through the movable groove (24) and extends into the working circular groove (23); A punching cylinder (3) is fixedly mounted on the upper end of the working circular groove (23), and an extrusion block (31) is fixedly mounted on the lower end of the piston rod of the punching cylinder (3). The outer side of the lower end of the extrusion block (31) is a sloped surface, and the upper end of the driving block (35) is a sloped surface.

3. The punching device for processing an automobile airbag diffuser according to claim 1, characterized in that: The unloading mechanism comprises a pushing cylinder (4) fixedly mounted at the lower end of a circular raised portion at the bottom of the workbench (13); a piston rod of the pushing cylinder (4) extends into the circular contraction cavity (15) and is fixedly connected to the lower end of a unloading plate (41); and the unloading plate (41) is clamped in the circular contraction cavity (15).

4. The punching device for processing an automobile airbag diffuser according to claim 1, characterized in that: A plurality of communication holes are provided on the inner side wall of the through slot (16), the communication holes are connected to the mounting cavity (14), and the detection round rod (7) is slidably connected to the communication holes.

5. The punching device for processing an automobile airbag diffuser according to claim 1, characterized in that: The upper end of the support base (1) is recessed downward and is provided with a circular groove (11), the upper end of the circular groove (11) is provided with an annular groove (12), the circular protrusion at the lower end of the workbench (13) extends downward into the circular groove (11), the driving mechanism comprises an annular transmission plate (5) rotatably mounted in the circular groove (11), the upper end of the annular transmission plate (5) is provided with a plurality of inclined grooves (51) penetrating downward in the form of an annular array, the outer side of the annular transmission plate (5) is fixedly sleeved with a gear ring (52), the side surface of the gear ring (52) is meshed with a driving gear (53), and the driving gear (53) is driven by a motor shaft of a stepping motor fixedly mounted on the lower end of the support base (1); An annular fixing plate (54) is fixedly installed in the annular groove (12), and a plurality of convex guide grooves (55) are provided in an annular array on the inner side of the annular fixing plate (54), and a convex sliding block (56) is slidably installed in each convex guiding groove (55), and a transmission column (57) is fixedly connected to the lower end of each convex sliding block (56).

6. The punching device for processing a diffuser of an automobile airbag according to claim 5, characterized in that: The upper end of the annular transmission plate (5) is in rotational contact with the lower end of the annular fixing plate (54), the annular transmission plate (5) and the annular fixing plate (54) are both sleeved on the circular protrusion, the annular transmission plate (5) is in rotational contact with the circular protrusion, the transmission column (57) is inserted downward into the inclined groove (51), and the transmission column (57) is slidably connected to the inclined groove (51).

7. The punching device for processing an automobile airbag diffuser according to claim 5, characterized in that: The upper end of the convex sliding block (56) is fixedly connected to the lower end of the L-shaped transmission seat (6), and the lower end of the L-shaped transmission seat (6) is in sliding contact with the upper end of the annular fixing plate (54).

8. The punching device for processing a diffuser of an automobile airbag according to claim 1, characterized in that: The detection round rod (7) is provided with a socket (71) at one end away from the detection end, the warning mechanism comprises an inner rod (8) slidably inserted into the socket (71), the inner rod (8) is fixedly connected to a push plate (81) at one end outside the socket (71), a plurality of trigger springs (82) are fixedly mounted in an annular array on a side of the push plate (81) close to the inner rod (8), a first power-connecting copper sheet (83) is fixedly mounted on a side of the push plate (81) away from the inner rod (8), a second power-connecting copper sheet (84) is fixedly mounted on an inner side wall of the L-shaped transmission seat (6), and a plurality of warning lights (85) are mounted in an annular array on the upper end of the workbench (13), and the plurality of warning lights (85) are mounted one-to-one in the vicinity of the plurality of through slots (16).

9. The punching device for processing an automobile airbag diffuser according to claim 1, characterized in that: The marking mechanism comprises an electric telescopic rod (9) installed in a marking groove (17); a mounting sleeve is fixedly installed at the end of the movable rod of the electric telescopic rod (9); a marking pen (91) is installed in the mounting sleeve; an extension hole is opened at one end of the marking groove (17); the extension hole is connected to the mounting cavity (14); and the marking end of the marking pen (91) can pass through the extension hole and be inserted into the mounting cavity (14).

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