Die for side punching of automobile safety air bag exhaust hood

Abstract

The utility model discloses a side punching die for an exhaust hood of an automobile safety air bag. The side punching die comprises an upper die and a lower die, an exhaust hood is arranged between the upper die and the lower die, and the upper die and the lower die form a side punching hole in the exhaust hood; the upper die comprises an upper supporting part; the upper mold core is connected to the upper supporting part; the elastic upper die wedge is connected to the upper supporting part; the lower die comprises a lower supporting part; the unloading plate is connected with the lower supporting part, and the top of the unloading plate is in contact with a flange on the exhaust hood; the lower die wedge is connected with the lower supporting part; the lower die core is arranged in the lower supporting part, is connected with the lower die wedge and is connected with the unloading plate; one end of the side punch is in sliding connection with the lower die core, and the other end of the side punch makes contact with the lower die wedge and is used for forming a side punched hole; the elastic side sliding block is connected in the lower supporting part in a sliding manner, is linked by the elastic upper die wedge and is used for pressing the outer wall of the cover cylinder; therefore, the technical problems that the machining difficulty is relatively large, and chippings and burrs are clamped in the mold, so that the mold is damaged are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile and railway vehicle, specifically a kind of die of automobile safety air bag exhaust cover side punching. BACKGROUND

[0002] Safety air bag exhaust cover is a component on automobile, its structure generally includes: flange;And the cover cylinder body connected in the middle position of flange;Cover cylinder body's side wall has several side punchings;

[0003] When side punching is processed, it is usually punched on punch press using die, since the shape of cover cylinder body is cylindrical, inner diameter is 59 millimeters, to ensure processing accuracy, prevent cover cylinder body from deforming, it needs to adopt the way of from inside to outside, and side punching is punched, and in relatively narrow space, it is relatively difficult to process from inside to outside.

[0004] Meanwhile, since the way of from inside to outside is adopted to form side punching, in the process of punching, the debris, the burr etc. formed will be stuck in die, leading to die damage, and serious die burst may occur. UTILITY MODEL CONTENT

[0005] In view of the above deficiencies in the related art, the purpose is to provide a kind of die of automobile safety air bag exhaust cover side punching, to solve the technical problems that the processing difficulty is relatively large in the related art, debris and burr may be stuck in die, leading to die damage;

[0006] The technical scheme to achieve the purpose is: a kind of die of automobile safety air bag exhaust cover side punching, including: upper die and lower die;The upper die and the lower die are provided with exhaust cover, and the upper die and the lower die form side punching on the exhaust cover;

[0007] Among them, the upper die includes: upper support part;

[0008] Upper die core, slidingly connected on the upper support part;

[0009] And several elastic upper die inclined wedges are connected on the upper support part, and are spaced apart from the upper die core;

[0010] Among them, the lower die includes: lower support part;

[0011] Unloading plate, supported by the local part of the lower support part, slidingly connected with the lower support part, and the top of the unloading plate is in contact with the flange on the exhaust cover, and supports the exhaust cover;

[0012] Lower die inclined wedge, worn on the lower support part, slidingly connected with the lower support part;

[0013] A lower mold core is arranged in the lower support portion, one end of which is sleeved on the lower mold wedge and slidably connected to the lower mold wedge, and the other end of which is passed through the stripper plate and slidably connected to the stripper plate;

[0014] A plurality of side punches are arranged at intervals, one end of which is movably connected to the lower die core and the other end of which is in contact with the lower die wedge and moves along the lower die wedge. The side punches are used to form the side punch holes;

[0015] And a plurality of elastic side sliders are slidably connected in the lower support part and are linked by the elastic upper die wedge to press the outer wall of the cover cylinder when the side punch forms the side punch hole on the cover cylinder on the exhaust hood.

[0016] Further: the upper support portion includes: an upper base plate;

[0017] upper pad;

[0018] an upper fixing plate connected to the upper base plate and the upper pad;

[0019] An upper elastic pressure rod, slidably connected to the upper fixed plate, for pressing down the stripping plate;

[0020] and a limiting member connected to the upper fixing plate, spaced apart from the upper elastic pressing rod, and used for pressing down the lower supporting portion.

[0021] Further: the limiting member includes: a limiting block;

[0022] And a first screw is connected to the upper fixing plate to press the limiting block.

[0023] Further: the upper mold core includes: at least two upper distance sleeves, which are spaced apart and slidably connected to the upper fixed plate;

[0024] At least two second screws are threaded one-to-one on the upper distance sleeve, and the length of the second screws is greater than the length of the upper distance sleeve;

[0025] and an upper mold block connected to the second screw, with one end abutting against the upper distance sleeve and the other end being used for contacting the cover cylinder.

[0026] Furthermore: the other end of the upper mold block has a concave arc surface.

[0027] Further: the elastic upper die wedge includes: an elastic member, which is arranged in the upper base plate and the upper pad;

[0028] An upper die oblique wedge, one end of which is slidably connected to the upper fixed plate and the other end of which is away from the upper fixed plate;

[0029] And a third screw is connected on the upper fixed plate, and the upper die inclined wedge block is limited.

[0030] Further, the elastic member is a nitrogen spring.

[0031] Further, the upper die inclined wedge block is a rectangular block structure, one end of which is provided with a first side protrusion, and the other end of which is provided with a first inclined surface.

[0032] The first side protrusion is in contact with the third screw and is limited by the third screw.

[0033] Further, the lower support part comprises a lower bottom plate.

[0034] A first lower fixed plate is arranged on the lower bottom plate.

[0035] A second lower fixed plate is arranged on the first lower fixed plate.

[0036] A lower cover plate is arranged on the second lower fixed plate, and has an inner space at the middle position of the first lower fixed plate and the second lower fixed plate.

[0037] And a lower elastic ejection rod is slidably connected to the lower bottom plate, one end of which is in the inner space and abuts against the ejection plate.

[0038] Further, the ejection plate comprises a ring-shaped plate body, which is sleeved on the lower die core and is slidably connected to the lower die core.

[0039] A plurality of conical protrusions are arranged on the ring-shaped plate body and are one-to-one inserted into the through holes on the flange.

[0040] And a plurality of second side protrusions are arranged on the outer edge of the ring-shaped plate body and are slidably connected to the first guide sliding groove on the first lower fixed plate and the second lower fixed plate, and the first guide sliding groove is in communication with the inner space.

[0041] Further, the lower die inclined wedge is a cylindrical structure, which is slidably connected to the lower bottom plate, one end of the lower die inclined wedge penetrates through the lower bottom plate and extends into the inner space.

[0042] The side wall of one end of the lower die inclined wedge has a slope.

[0043] A plurality of inclined grooves are arranged at the slope, and the inclined grooves are one-to-one arranged with the side punch.

[0044] Further, the lower die core is connected to the lower bottom plate and arranged in the inner space.

[0045] The lower mold core is in a T-shaped structure, and a first through hole is arranged at a middle position of the lower mold core and is in sliding connection with the lower mold wedge;

[0046] A plurality of second through holes are arranged on the side wall of the lower mold core and are in one-to-one arrangement with the side punch;

[0047] The lower mold core further has an outward convex arc surface at one end thereof.

[0048] Further, the elastic side sliding block comprises a side sliding block body in sliding connection with the second guide sliding groove on the first lower fixed plate and the second lower fixed plate, the second guide sliding groove being in communication with the inner space, the side sliding block body being linked with the elastic upper mold wedge and sliding along the second guide sliding groove to press the outer wall of the cover barrel body;

[0049] A plurality of springs are arranged between the side sliding block body and the lower mold core, and the elastic force of the springs is smaller than the elastic force of the elastic upper mold wedge.

[0050] Further, the side sliding block body comprises an L-shaped support block, the L-shaped support block having a plurality of inner holes on one side thereof and a notch on the other side thereof, one end of the spring being accommodated in the inner hole, and the elastic upper mold wedge being accommodated in the notch;

[0051] and an extending arm connected at one end to the top of the L-shaped support block and extending in the direction of the lower mold core for contacting the outer wall of the cover barrel body, the extending arm and the L-shaped support block having an accommodation space therebetween for accommodating part of the stripper plate and part of the flange, the extending arm further having a second inclined surface thereon.

[0052] By adopting the above technical scheme, the following beneficial effects are achieved: the mold for side punching of the exhaust cover of the automobile safety air bag has the upper mold and the lower mold compared with the related art; the upper mold comprises an upper support portion, an upper mold core and an elastic upper mold wedge; the lower mold comprises a lower support portion, a stripper plate, a lower mold wedge, a lower mold core, a side punch and an elastic side sliding block;

[0053] When the side punch forming is performed, the exhaust cover is arranged on the top of the stripper plate through the flange, the upper die moves to the lower die, the upper die core abuts against the top of the cover barrel, the upper support part presses the top of the stripper plate, the stripper plate and the cover barrel move along the lower die core, the exhaust cover is positioned between the upper die core, the stripper plate and the lower die core, the elastic upper die wedge presses the elastic side slide block, the elastic side slide block moves along the lower support part, the elastic side slide block is attached to the outer wall of the cover barrel, the upper die continues to move to the lower die, the upper support part presses the top of the lower support part, the lower support part drives the lower die core to move downward, the lower die core drives the side punch to slide along the lower die wedge, the side punch slides along the lower die core and forms the side punch hole on the cover barrel, the formed scraps and burrs fall between the stripper plate and the elastic side slide block, the upper die returns, the stripper plate returns under the action of the lower support part, the elastic side slide block and the elastic upper die wedge can elastically rebound and give way, the probability of the scraps and burrs being stuck between the stripper plate and the elastic side slide block is reduced, the die is protected, the processing difficulty is reduced, and the forming quality of the side punch hole is ensured;

[0054] Therefore, the technical problems that the processing difficulty is relatively large and the scraps and burrs are stuck in the die to cause damage of the die are overcome, the technical effects that the processing difficulty is reduced, the forming quality is ensured, the probability of the scraps and burrs being stuck in the die is reduced, and the die is protected are achieved, and the device has practicality. BRIEF DESCRIPTION OF DRAWINGS

[0055] Figure 1 is a total assembly view;

[0056] Figure 2 is a partial sectional view of the upper die;

[0057] Figure 3 is a partial sectional view of the lower die;

[0058] Figure 4 is a structural schematic view of the upper die wedge block;

[0059] Figure 5 is a structural schematic view of the elastic part;

[0060] Figure 6 is a structural schematic view of the stripper plate;

[0061] Figure 7 is a structural schematic view of the side slide block body;

[0062] Figure 8 is a structural schematic view of the exhaust cover after the side punch hole is formed;

[0063] In the figure: 10. upper support part, 11. upper bottom plate, 12. upper gusset, 13. upper fixed plate, 14. upper elastic compression rod, 15. limiting piece, 15-1. limiting block, 15-2. first screw, 20. upper mold core, 21. upper fixed distance sleeve, 22. second screw, 23. upper mold compression block, 23-1. concave arc surface, 30. elastic upper mold wedge, 31. elastic piece, 31-1. cylinder body, 31-2. compression rod, 32. upper mold wedge block, 32-1. first side protrusion, 32-2. first inclined surface, 33. third screw, 40. lower support part, 41. lower bottom plate, 42. first lower fixed plate, 42-1. first guide sliding groove, 42-2. second guide sliding groove, 43. second lower fixed plate, 44. lower cover plate, 45. inner space, 46. lower elastic ejection rod, 50. ejection plate, 51. annular plate body, 52. conical protrusion, 53. second side protrusion, 60. lower mold wedge, 61. slope, 61-1. inclined slot, 70. lower mold core, 71. first through hole, 72. second through hole, 73. outer convex arc surface, 80. side punch, 90. elastic side sliding block, 91. side sliding block body, 91-1. L-shaped support block, 91-11. inner hole, 91-12. notch, 91-2. protruding arm, 91-21. second inclined surface, 91-3. containing space, 92. spring, 100. side punch hole, 200. flange, 201. through hole, 300. cover cylinder body. DETAILED DESCRIPTION

[0064] In order to make the content easier to be clearly understood, the following is further detailed according to specific embodiments and in conjunction with the accompanying drawings;

[0065] A mold for side punching of an automobile safety airbag exhaust cover solves the technical problem in the related art that the machining difficulty is relatively large, debris and burrs can be stuck in the mold, and the mold can be damaged, can be manufactured and used, and achieves the positive effects of reducing the machining difficulty, ensuring the forming quality, reducing the probability of debris and burrs being stuck in the mold, and protecting the mold.

[0066] An embodiment is as follows:

[0067] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 8 ; a mold for side punching of an automobile safety airbag exhaust cover, comprising: an upper mold and a lower mold; an exhaust cover is arranged between the upper mold and the lower mold, and the upper mold and the lower mold form a side punch hole 100 on the exhaust cover;

[0068] Among them, the upper mold comprises: an upper support part 10;

[0069] An upper mold core 20 is slidably connected to the upper support part 10;

[0070] and several elastic upper die wedges 30 connected to the upper support part 10 and arranged in intervals with the upper die core 20;

[0071] The lower die comprises a lower support part 40.

[0072] A stripper plate 50 is supported by a part of the lower support part 40 and is in sliding connection with the lower support part 40. The top of the stripper plate 50 is in contact with the flange 200 on the exhaust cover and supports the exhaust cover.

[0073] A lower die wedge 60 is arranged on the lower support part 40 and is in sliding connection with the lower support part 40.

[0074] A lower die core 70 is arranged in the lower support part 40, one end of which is in sliding connection with the lower die wedge 60, and the other end is in sliding connection with the stripper plate 50.

[0075] Several side punches 80 are arranged in intervals, one end of which is in movable connection with the lower die core 70, and the other end is in contact with the lower die wedge 60 and moves along the lower die wedge 60. The side punches 80 are used to form the side punch hole 100.

[0076] And several elastic side sliders 90 are in sliding connection with the lower support part 40 and are linked by the elastic upper die wedges 30. When the side punches 80 form the side punch hole 100 on the cover cylinder body 300 on the exhaust cover, the elastic side sliders 90 press the outer wall of the cover cylinder body 300.

[0077] Specifically, when the side punch hole 100 is formed, the exhaust cover is arranged on the top of the stripper plate 50 through the flange 200, the upper die moves to the lower die, the upper die core 20 abuts against the top of the cover barrel 300, the upper support part 10 presses the top of the stripper plate 50, the stripper plate 50 and the cover barrel 300 move along the lower die core 70, the exhaust cover is positioned between the upper die core 20, the stripper plate 50 and the lower die core 70, the elastic upper die wedge 30 presses the elastic side slide block 90, the elastic side slide block 90 moves along the lower support part 40, the elastic side slide block 90 abuts against the outer wall of the cover barrel 300, the upper die continues to move to the lower die, the upper support part 10 presses the top of the lower support part 40, the lower support part 40 drives the lower die core 70 to move downward, the lower die core 70 drives the side punch 80 to slide along the lower die wedge 60, the side punch 80 forms the side punch hole 100 on the cover barrel 300 along the lower die core 70, after the side punch hole 100 is formed, the formed scraps and burrs fall between the stripper plate 50 and the elastic side slide block 90, the upper die returns, the stripper plate 50 returns under the action of the lower support part 40, because the elastic side slide block 90 and the elastic upper die wedge 30 can elastically rebound and give way, the probability that the scraps and burrs are stuck between the stripper plate 50 and the elastic side slide block 90 is reduced, the die is protected, meanwhile, the processing difficulty is reduced, and the forming quality of the side punch hole is ensured;

[0078] Another embodiment:

[0079] As shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 8 When implemented, the upper support part 10 comprises an upper bottom plate 11, an upper backing plate 12, an upper fixed plate 13 connected with the upper bottom plate 11 and the upper backing plate 12, an upper elastic pressing rod 14 slidably connected with the upper fixed plate 13 and used for pressing the stripper plate 50, and a limiting piece 15 connected with the upper fixed plate 13 and arranged in space with the upper elastic pressing rod 14 and used for pressing the lower support part 40;

[0080] The upper bottom plate 11, the upper backing plate 12 and the upper fixed plate 13 are plate-shaped structures with regular shapes, which are convenient to assemble;

[0081] The upper elastic pressing rod 14 is a common structure in the prior art, which comprises an upper pressing rod (generally in the shape of a “T”) slidably connected with the upper fixed plate 13 and a first spring body (for example, a cylindrical spring) used for elastically supporting the upper pressing rod; when the upper die moves to the lower die, the upper elastic pressing rod 14 presses the stripper plate 50, so that the stripper plate 50 and the exhaust cover move downward along the lower die core 70;

[0082] The limiting piece 15 comprises: a limiting block 15-1; and a first screw 15-2 connected to the upper fixed plate 13 and pressing the limiting block 15-1; the limiting block 15-1 is a square block structure; the first screw 15-2 is an internal hexagonal screw and is threadedly connected to the upper fixed plate 13 to press the limiting block 15-1; the limiting piece 15 is arranged to press the lower support part 40 at the limiting block 15-1 when the upper mold continues to move in the direction of the lower mold, and the lower elastic ejection rod 46 on the lower support part 40 continues to be compressed, and the lower bottom plate 41, the first lower fixed plate 42, the second lower fixed plate 43, and the lower cover plate 44 move downward together with the lower mold core 70;

[0083] The upper mold core 20 comprises: at least two upper distance sleeve pipes 21 which are arranged at intervals and are slidably connected to the upper fixed plate 13; at least two second screws 22 which are one-to-one arranged on the upper distance sleeve pipes 21, and the length of the second screw 22 is greater than the length of the upper distance sleeve pipe 21; and an upper mold pressing block 23 which is connected to the second screw 22, one end of which abuts against the upper distance sleeve pipe 21, and the other end of which is used to contact the cover barrel body 300;

[0084] The upper distance sleeve pipe 21 has a "T" shaped structure; the second screw 22 is an internal hexagonal screw; and the upper mold pressing block 23 is threadedly connected to the second screw 22, so that the upper mold pressing block 23, the second screw 22, and the upper distance sleeve pipe 21 are connected as a relatively integral whole;

[0085] The other end of the upper mold pressing block 23 has an inner concave arc surface 23-1, which matches the top of the cover barrel body 300, is conducive to the contact and abutment of the upper mold core 20 and the top of the cover barrel body 300, limits the exhaust cover, ensures the coaxiality, and enables the exhaust cover to move together with the ejection plate 50 along the lower mold core 70, and the exhaust cover is positioned between the upper mold core 20, the ejection plate 50, and the lower mold core 70;

[0086] The elastic upper mold wedge 30 comprises: an elastic piece 31 arranged in the upper bottom plate 11 and the upper pad plate 12; an upper mold wedge block 32 having one end slidably connected to the upper fixed plate 13 and the other end away from the upper fixed plate 13; and a third screw 33 connected to the upper fixed plate 13 and limiting the upper mold wedge block 32;

[0087] The elastic piece 31 is a nitrogen gas spring and has a common structure in the prior art, such as comprising: a cylinder body 31-1 and a compression rod 31-2, the cylinder body 31-1 has nitrogen gas therein, and one end of the compression rod 31-2 is slidably connected to the cylinder body 31-1 to form an elastic support and buffer;

[0088] The upper die inclined wedge block 32 is a rectangular block structure, one end of which is provided with a first side protrusion 32-1, and the other end of which is provided with a first inclined surface 32-2; the first side protrusion 32-1 is provided, which is a rectangular block structure, and is in sliding connection with the upper fixed plate 13, thereby forming a guide, so that the upper die inclined wedge block 32 does not rotate when moving along the sliding groove on the upper fixed plate 13, and moves more smoothly, and the first side protrusion 32-1 is in contact with the third screw 33, which is beneficial to being held and limited by the third screw 33;

[0089] The first inclined surface 32-2 is provided, which is in contact with the second inclined surface 91-21, which is beneficial to pushing the side sliding block body 91 to move along the second guide sliding groove 42-2;

[0090] The third screw 33 is an internal hexagonal screw, which is in threaded connection with the upper fixed plate 13, and is used to hold and limit the upper die inclined wedge block 32, so as to prevent the upper die inclined wedge block 32 from being separated from the upper fixed plate 13;

[0091] Another embodiment:

[0092] As shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 6 、 Figure 7 、 Figure 8 ; in implementation, the lower support part 40 includes a lower bottom plate 41, a first lower fixed plate 42 arranged on the lower bottom plate 41, a second lower fixed plate 43 arranged on the first lower fixed plate 42, a lower cover plate 44 arranged on the second lower fixed plate 43, and having an inner space 45 at the middle position of the first lower fixed plate 42 and the second lower fixed plate 43, and a lower elastic ejection rod 46 in sliding connection with the lower bottom plate 41, one end of which is in the inner space 45 and abuts against the ejection plate 50;

[0093] The lower bottom plate 41, the first lower fixed plate 42, the second lower fixed plate 43 and the lower cover plate 44 are in plate structure and regular shape, which are convenient to assemble;

[0094] The inner space 45 is provided, which is beneficial to arranging the ejection plate 50, the lower die inclined wedge 60, the lower die core 70, the side punch 80 and the elastic side sliding block 90, fully utilizes the space, is relatively beautiful, and has relatively good structural reliability;

[0095] The lower elastic ejection rod 46 is a common structure in the prior art, for example, including: a lower ejection rod (generally in the shape of a "T" structure), which is slidingly connected to the lower bottom plate 41; and a second spring body (for example, a cylindrical spring), which is used to elastically support the lower ejection rod, and the elastic force of the second spring body is smaller than that of the first spring body; when the upper die moves in the direction of the lower die, the upper elastic pressing rod 14 presses the ejection plate 50 downward, and the lower elastic ejection rod 46 supports the ejection plate 50, thereby forming a buffer, which is beneficial for the ejection plate 50 and the exhaust cover to smoothly move in position downward along the lower die core 70, and after the side punch hole 100 on the exhaust cover is formed, as the upper die moves upward, the upper die gradually moves away from the lower die, the lower elastic ejection rod 46 slowly rebounds, so that the ejection plate 50 and the exhaust cover move upward along the lower die core 70, the exhaust cover is separated from the lower die core 70, and the exhaust cover is easily removed;

[0096] The ejection plate 50 includes: an annular plate body 51, which is sleeved on the lower die core 70 in the middle position and is slidingly connected to the lower die core 70; a plurality of conical protrusions 52, which are arranged on the annular plate body 51 and are used to be one-to-one inserted into the through holes 201 on the flange 200; and a plurality of second side blocks 53, which are spaced apart and connected to the outer edge of the annular plate body 51 and are used to be slidingly connected to the first guide sliding groove 42-1 on the first lower fixed plate 42 and the second lower fixed plate 43, and the first guide sliding groove 42-1 communicates with the inner space 45;

[0097] The annular plate body 51, the conical protrusions 52 and the second side blocks 53 are integrally formed; the number of the conical protrusions 52 is four, which are used to be one-to-one inserted into the through holes 201, and the annular plate body 51 supports the flange 200, which is beneficial for the positioning of the exhaust cover on the ejection plate 50 and ensures the positioning accuracy, and the relative loading and unloading are convenient; the number of the second side blocks 53 is four, which are generally in the shape of a square structure and are used to match the first guide sliding groove 42-1, which is beneficial for the ejection plate 50 to slide along the first guide sliding groove 42-1 in position, ensures the coaxiality, and the relative movement is smooth;

[0098] The lower die wedge 60 is in a cylindrical structure and is slidingly connected to the lower bottom plate 41, one end of the lower die wedge 60 penetrates through the lower bottom plate 41 and extends into the inner space 45, and the other end is fixedly connected to the lower workbench of the punch;

[0099] The side wall of one end of the lower die wedge 60 has a slope 61; a plurality of inclined grooves 61-1 are arranged at the slope 61, and the inclined grooves 61-1 are one-to-one arranged with the side punch 80;

[0100] The slope 61 and the chute 61-1 are arranged, the other end of the side punch 80 is accommodated in the chute 61-1, when the side punch 80 moves downwards together with the lower support part 40, the discharge plate 50, the lower mold core 70 and the exhaust cover, the other end of the side punch 80 is gradually pushed along the slope 61, one end of the side punch 80 extends to the exhaust cover direction along the second through hole 72 on the lower mold core 70, and the side punch hole 100 is formed on the exhaust cover;

[0101] The lower mold core 70 is connected to the lower bottom plate 41 and arranged in the inner space 45, the outer shape of the lower mold core 70 is a "T" structure, the middle position has a first through hole 71, and the first through hole 71 is slidably connected with the lower mold wedge 60;

[0102] The first through hole 71 is arranged to form a guide and ensure coaxiality, which is beneficial to the movement of the lower mold core 70 along the lower mold wedge 60;

[0103] The side wall of the lower mold core 70 has a plurality of second through holes 72, and the second through holes 72 are arranged one by one with the side punch 80; the second through hole 72 is arranged to form a guide, which is beneficial to the extension of the side punch 80;

[0104] One end of the lower mold core 70 further has an outer convex arc surface 73; the outer convex arc surface 73 is arranged to match the top inner wall of the cover barrel 300, which is beneficial to limiting the exhaust cover and ensuring coaxiality;

[0105] The side punch 80 is a common structure in the prior art, such as a T-shaped punch, when the side punch 80 moves downwards together with the lower support part 40, the discharge plate 50, the lower mold core 70 and the exhaust cover, the side punch 80 is pushed by the slope 61, one end of the side punch 80 extends to the exhaust cover direction along the second through hole 72 on the lower mold core 70, and the side punch hole 100 is formed on the exhaust cover;

[0106] The elastic side slide block 90 includes a side slide block body 91 slidably connected with a second guide sliding groove 42-2 on the first lower fixed plate 42 and the second lower fixed plate 43, the second guide sliding groove 42-2 communicates with the inner space 45, the side slide block body 91 is linked with the elastic upper mold wedge 30 to slide along the second guide sliding groove 42-2 to press the outer wall of the cover barrel 300, and a plurality of springs 92 are arranged between the side slide block body 91 and the lower mold core 70, and the elastic force of the spring 92 is smaller than the elastic force of the elastic upper mold wedge 30;

[0107] The side slider body 91 includes: an L-shaped support block 91-1, wherein one side of the L-shaped support block 91-1 has a plurality of inner holes 91-11, and the other side has a notch 91-12, wherein the inner hole 91-11 accommodates one end of the spring 92, and the notch 91-12 accommodates a part of the elastic upper mold wedge 30; and an extension arm 91-2, one end of which is connected to the top of the L-shaped support block 91-1, and the other end extends toward the lower mold core 70 for contacting the outer wall of the cover cylinder 300, and an accommodating space 91-3 is defined between the extension arm 91-2 and the L-shaped support block 91-1, wherein the accommodating space 91-3 is used to accommodate a part of the stripper plate 50 and a part of the flange 200, and the extension arm 91-2 also has a second inclined surface 91-21;

[0108] A second guide slot 42 - 2 is provided, which matches the shape of the side slider body 91 and facilitates guiding the side slider body 91 so that the side slider body 91 moves relatively smoothly;

[0109] An inner hole 91-11 is provided to facilitate positioning of the spring 92;

[0110] The notch 91-12 is provided to facilitate the accommodation of the upper die wedge block 32. The upper die wedge block 32 can block the side slider body 91, so that the side slider body 91 presses the outer wall of the cover cylinder 300. When the side punch 80 forms the side punch hole 100, the probability of deformation of the cover cylinder 300 is reduced, thereby ensuring the forming quality.

[0111] A second inclined surface 91-21 is provided for contacting the first inclined surface 32-2, which is conducive to the upper mold inclined wedge block 32 pushing the side slider body 91 to move along the second guide slot 42-2;

[0112] The spring 92 is a common structure in the prior art, such as a cylindrical spring, which is used to generate a rebound force to facilitate the return of the side slider body 91;

[0113] The elastic force of the spring 92 is smaller than the elastic force of the elastic upper die wedge 30. Due to the control of the elastic force, when there is no debris or burr stuck, the elastic side slider 90 can rebound and give way, leaving enough space to accommodate the debris and burr. The elastic side slider 90 will not push away the elastic upper die wedge 30, and the structural reliability is good.

[0114] When debris or burrs are stuck between the stripper plate 50 and the elastic side slider 90, as the upper mold moves upward, the stripper plate 50 returns upward, and the stripper plate 50 pushes the elastic side slider 90 to make way through the debris or burrs, generating a thrust, so that the elastic side slider 90 pushes the elastic upper mold wedge 30 to rebound and make way, further making room, preventing the mold from getting stuck, and protecting the mold.

[0115] The structure of the exhaust hood

[0116] As shown in Figure 8 ; the exhaust hood comprises: a flange 200; and a hood barrel 300 connected at an intermediate position of the flange 200; the side wall of the hood barrel 300 is provided with a plurality of side punches 100;

[0117] The working principle is as follows: the upper die is connected to the upper workbench of the punch, the lower die is connected to the lower workbench of the punch, when the side punch 100 is formed, the exhaust hood is arranged on the top of the stripper plate 50 through the flange 200, the upper die moves in the direction of the lower die, the upper die core 20 abuts against the top of the hood barrel 300, the upper support part 10 presses the top of the stripper plate 50, the stripper plate 50 and the hood barrel 300 move along the lower die core 70, the exhaust hood is positioned between the upper die core 20, the stripper plate 50 and the lower die core 70, the elastic upper die wedge 30 presses the elastic side slide 90, the elastic side slide 90 moves along the lower support part 40, the elastic side slide 90 is in close contact with the outer wall of the hood barrel 300, the upper die continues to move in the direction of the lower die, the upper support part 10 presses the top of the lower support part 40, the lower support part 40 links the lower die core 70 to move downward, the lower die core 70 links the side punch 80 to slide along the lower die wedge 60, the side punch 80 slides along the lower die core 70 to form the side punch hole 100 on the hood barrel 300, after the side punch hole 100 is formed, the formed debris and burrs fall between the stripper plate 50 and the elastic side slide 90, the upper die returns, the stripper plate 50 returns under the action of the lower support part 40, because the elastic side slide 90 and the elastic upper die wedge 30 can elastically rebound and give way, the probability of the debris and burrs being stuck between the stripper plate 50 and the elastic side slide 90 is reduced, the mold is protected, at the same time, the processing difficulty is reduced, and the forming quality of the side punch hole is ensured;

[0118] In the description, it should be understood that the terms "upper", "lower", "left", "right", "front", "back" and the like indicate the positional or positional relationship based on the position relationship described in the drawings, and are only for the convenience of description or simplification of description, and do not indicate a specific orientation that must be had; the operation process described in the embodiment is not an absolute use step, and in actual use, corresponding adjustment can be made;

[0119] Unless otherwise defined, the technical terms or scientific terms used herein should be understood as the usual meaning understood by those skilled in the art; "first", "second" and similar words used in the specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components; similarly, "one" or "a" and the like do not indicate a quantity limit, but indicate the existence of at least one, which should be determined according to the content of the embodiment;

[0120] The above descriptions are only the preferred embodiments of the present application, not intended to limit the present application. Any modification, equivalent replacement or change made by any person skilled in the art within the technical scope of the present application should be covered within the protection scope of the present application.

Claims

1. A die for side piercing of an automotive airbag vent cover, comprising: The utility model relates to a side punch forming device of exhaust cover, including: Upper die and lower die, exhaust cover is arranged between the upper die and the lower die, and the upper die and the lower die are shaped side punch (100) on the exhaust cover, Wherein, the upper die includes: upper support part (10), Upper die core (20) is slidably connected on the upper support part (10), And a plurality of elastic upper die inclined wedge (30) are connected on the upper support part (10), and are spaced apart from the upper die core (20), Wherein, the lower die includes: lower support part (40), Unloading plate (50) is partially supported by the lower support part (40), and is slidably connected with the lower support part (40), and the top of the unloading plate (50) is in contact with the flange (200) on the exhaust cover, and the exhaust cover is supported, Lower die inclined wedge (60) is worn on the lower support part (40) and is slidably connected with the lower support part (40), Lower die core (70) is arranged in the lower support part (40), one end is sleeved on the lower die inclined wedge (60) and is slidably connected with the lower die inclined wedge (60), the other end is worn on the unloading plate (50) and is slidably connected with the unloading plate (50), A plurality of side punch head (80) are spaced apart, one end is movably connected with lower die core (70), the other end is in contact with the lower die inclined wedge (60) and moves position along the lower die inclined wedge (60), and the side punch head (80) is used for forming the side punch (100) on the cover cylinder body (300) on the exhaust cover, And a plurality of elastic side sliding block (90) are slidably connected in the lower support part (40), are linked by the elastic upper die inclined wedge (30), and press the outer wall of the cover cylinder body (300) when the side punch head (80) forms the side punch (100) on the cover cylinder body (300) on the exhaust cover.

2. The die for side piercing of an automotive airbag vent cover of claim 1, wherein: The upper support part (10) includes: upper bottom plate (11), Upper backing plate (12), Upper fixed plate (13) is connected with the upper bottom plate (11) and the upper backing plate (12), Upper elastic pressure rod (14) is slidably connected on the upper fixed plate (13) and is used for pressing the unloading plate (50), And the limiting piece (15) is connected on the upper fixed plate (13) and is spaced apart from the upper elastic pressure rod (14) and is used for pressing the lower support part (40).

3. The die for side piercing of an automotive airbag vent cover of claim 2, wherein: The limiting piece (15) includes: limiting block (15-1), And the first screw (15-2) is connected on the upper fixed plate (13) and presses the limiting block (15-1).

4. The die for side piercing of an automotive airbag vent cover of claim 2, wherein: The upper die core (20) includes: at least two upper distance sleeve (21) are spaced apart and are slidably connected on the upper fixed plate (13), At least two second screws (22) are one-to-one worn on the upper distance sleeve (21), and the length size of the second screw (22) is greater than the length size of the upper distance sleeve (21), And upper die pressing block (23) is connected on the second screw (22), one end is abutted with the upper distance sleeve (21), and the other end is used for being in contact with the cover cylinder body (300).

5. The die for side piercing of an automotive airbag vent cover of claim 4, wherein: The other end of the upper die pressing block (23) has an inner concave arc surface (23-1).

6. The die for side piercing of an automotive airbag vent cover of claim 2, wherein: The elastic upper die wedge (30) comprises: an elastic member (31) arranged in the upper bottom plate (11) and the upper backing plate (12); An upper die wedge block (32) is slidably connected to one end of the upper fixed plate (13) and the other end away from the upper fixed plate (13); And a third screw (33) is connected to the upper fixed plate (13) and limits the upper die wedge block (32).

7. The die for side piercing of an automotive airbag vent cover of claim 6, wherein: The elastic member (31) is a nitrogen spring.

8. A die for side piercing of an automotive airbag vent cover according to claim 6 or 7, characterized in that: The upper die wedge block (32) is a rectangular block structure, one end of which has a first side protrusion (32-1), and the other end has a first inclined surface (32-2); The first side protrusion (32-1) is in contact with the third screw (33) and is supported and limited by the third screw (33).

9. A die for side piercing of an automotive airbag vent cover according to claim 1 or 4 or 5 or 7, characterized in that: The lower support part (40) comprises: a lower bottom plate (41); A first lower fixed plate (42) is arranged on the lower bottom plate (41); A second lower fixed plate (43) is arranged on the first lower fixed plate (42); A lower cover plate (44) is arranged on the second lower fixed plate (43) and has an inner space (45) at the middle position of the first lower fixed plate (42) and the second lower fixed plate (43); And a lower elastic ejection rod (46) is slidably connected to the lower bottom plate (41), one end of which is in the inner space (45) and abuts against the ejection plate (50).

10. The die for side piercing of an automotive airbag vent cover of claim 9, wherein: The ejection plate (50) comprises: an annular plate body (51) which is sleeved on the lower die core (70) and is slidably connected to the lower die core (70); A plurality of conical protrusions (52) are arranged on the annular plate body (51) and are used for one-to-one insertion with the through holes (201) on the flange (200); And a plurality of second side protrusions (53) are connected to the outer edge of the annular plate body (51) and are used for sliding connection with the first guide sliding groove (42-1) on the first lower fixed plate (42) and the second lower fixed plate (43), the first guide sliding groove (42-1) being in communication with the inner space (45).

11. The die for side piercing of an automotive airbag vent cover of claim 9, wherein: The lower die wedge (60) is a cylindrical structure and is slidably connected to the lower bottom plate (41), one end of the lower die wedge (60) penetrating through the lower bottom plate (41) and extending into the inner space (45); The side wall of one end of the lower die wedge (60) has a slope (61); A plurality of inclined grooves (61-1) are arranged at the slope (61), and the inclined grooves (61-1) are arranged one-to-one with the side punch (80).

12. The die for side piercing of an automotive airbag vent cover of claim 9, wherein: The lower die core (70) is connected to the lower bottom plate (41) and arranged in the inner space (45); The lower die core (70) has a "T" shaped structure and has a first through hole (71) at the middle position, the first through hole (71) being slidably connected to the lower die wedge (60); The side wall of the lower die core (70) has a plurality of second through holes (72), the second through holes (72) being arranged one-to-one with the side punch (80); One end of the lower die core (70) further has an outer convex arc surface (73).

13. The die for side piercing of an automotive airbag vent cover of claim 9, wherein: The elastic side slider (90) includes: a side slider body (91) slidably connected to the second guide slots (42-2) on the first lower fixed plate (42) and the second lower fixed plate (43); the second guide slots (42-2) are connected to the inner space (45); the side slider body (91) is linked by the elastic upper mold wedge (30) and slides along the second guide slots (42-2) to press the outer wall of the cover cylinder (300); and a plurality of springs (92) disposed between the side slider body (91) and the lower mold core (70), wherein the elastic force of the springs (92) is smaller than the elastic force of the elastic upper mold wedge (30).

14. The die for side piercing of an automotive airbag vent cover of claim 13, wherein: The side slider body (91) comprises: an L-shaped support block (91-1), wherein one side of the L-shaped support block (91-1) has a plurality of inner holes (91-11), and the other side has a notch (91-12), wherein the inner hole (91-11) accommodates one end of the spring (92), and the notch (91-12) accommodates a portion of the elastic upper die wedge (30); and a protruding arm (91-2), one end of which is connected to the top of the L-shaped support block (91-1), and the other end of which extends toward the lower mold core (70) and is used to contact the outer wall of the cover cylinder (300); a receiving space (91-3) is provided between the protruding arm (91-2) and the L-shaped support block (91-1); the receiving space (91-3) is used to accommodate a part of the stripping plate (50) and a part of the flange (200); and the protruding arm (91-2) also has a second inclined surface (91-21).

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