CN212190854U

CN212190854U - Material pressing and forming anti-wrinkling mechanism of stamping die

Info

Publication number: CN212190854U
Application number: CN202020133539.5U
Authority: CN
Inventors: 齐延飞; 修德校; 张小锁; 郑际华
Original assignee: Zhejiang Nuoge Automobile Mould Co ltd
Current assignee: Zhejiang Nuoge Automobile Mould Co ltd
Priority date: 2020-01-20
Filing date: 2020-01-20
Publication date: 2020-12-22
Anticipated expiration: 2030-01-20

Abstract

The utility model relates to a stamping die presses fashioned mechanism of wrinkling of preventing of material belongs to and presses material shaping technical field. The die comprises an upper die base and a lower die base, wherein an upper die core is installed in the upper die base, a lower die core is installed in the lower die base, a die pressing cavity is formed between the upper die core and the lower die core, the upper part of the lower die core is embedded into the lower part of the upper die core, a mounting groove is formed in the side wall of the lower die core, a pressure plate is installed in the mounting groove in a sliding manner, and a driving mechanism for driving the pressure plate to slide along the axis direction of the mounting. The utility model has the advantages of high product percent of pass.

Description

Material pressing and forming anti-wrinkling mechanism of stamping die

Technical Field

The utility model belongs to the technical field of the material shaping technique and specifically relates to a stamping die presses fashioned mechanism of wrinkling of preventing of material.

Background

At present, many parts in automobiles are processed by stamping dies (stamping dies for short). In the prior art, when the folded edge of the stamping part is formed, if the folded edge is irregular and bent, the folded edge material can wrinkle and deform along with the bending of the folded edge in the stamping forming process, so that the appearance and the quality of the stamping part are influenced.

Chinese utility model patent that the bulletin number is CN205236769U discloses a mechanism that corrugates is prevented in die pressing material shaping of stamping die, including upper die base and die holder, install mould benevolence in the upper die base, install the lower mould benevolence in the die holder, there is stamping workpiece of stamping forming between lower mould benevolence and the last mould benevolence, lower mould benevolence one side sets up special-shaped hem and inserts, special-shaped hem is inserted and is spliced into special-shaped hem die cavity with the lower mould benevolence, installs under the upper die base and presses material nitrogen cylinder, presses the piston rod of material nitrogen cylinder to pass the upper die base and connect the pressure flitch, presses flit. This scheme is through pressing flitch suppression, prevents that dysmorphism hem from warping when stamping forming from wrinkling.

The anti-wrinkling mechanism has the following defects: because the pressing plate extrudes the folded edge for a long time, the thickness of the sheet metal part at the folded edge position is reduced and the requirement on the thickness can not be met, so that the reject ratio of the product is increased.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art existence, the utility model aims at providing a die mould that product percent of pass is higher presses fashioned mechanism of wrinkling of preventing of material.

The utility model discloses an above-mentioned function can be realized through following technical scheme:

the utility model provides a stamping die presses fashioned mechanism of preventing corrugating of material, includes upper die base and die holder, install mould benevolence in the upper die base, install lower mould benevolence in the die holder, go up the mould benevolence with form between the lower mould benevolence and press the die cavity, lower mould benevolence upper portion embedding go up in the mould benevolence lower part, the mounting groove has been seted up to the lower mould benevolence lateral wall, slide in the mounting groove and install the pressure flitch, still be provided with the actuating mechanism that the drive pressure flitch slided along the mounting groove axis direction in the lower mould ben.

Through adopting above-mentioned technical scheme, during stamping forming, the stamping workpiece is placed on lower mould benevolence, the die holder drives upper mould benevolence and moves towards lower mould benevolence direction, the lower part of mould benevolence is gone into in the upper portion embedding of lower mould benevolence, go up the formation die cavity between mould benevolence and the lower mould benevolence, the stamping workpiece turns over at the extrusion lower limb simultaneously and turns over, thereby form the turn-ups, promote to press the flitch to carry out certain extrusion to the turn-ups through actuating mechanism, smooth the fold on the turn-ups through the extrusion, compare in the punching material after the suppression earlier, the mode that the material pressing shaping was afterwards pressed the flitch extrusion and is.

The present invention may be further configured in a preferred embodiment as: actuating mechanism is including pressing flitch, actuating lever, first wedge and second wedge, actuating lever one end is perpendicular press flitch setting and with press flitch fixed connection, the other end with first wedge fixed connection, press the flitch lower extreme with lower mould benevolence fixed connection, and the vertical setting of piston rod, the second wedge set up in press the end of the piston rod of flitch, the wedge of first wedge with the wedge butt of second wedge.

Through adopting above-mentioned technical scheme, shift up through pressing material cylinder drive second wedge, the second wedge promotes first wedge and removes towards the mounting groove direction to promote the flitch and do the motion of keeping away from the mounting groove, thereby press the hem extrusion of flitch extrusion stamping workpiece to smooth the fold on the hem, because carry out the conduction of power through first wedge and second wedge, the extrusion force does not have cylinder direct drive so big, thereby reduce the stamping workpiece hem and excessively warp the condition that leads to the thickness undersize to be unsatisfactory under the extrusion.

The present invention may be further configured in a preferred embodiment as: still be provided with the spacing chamber of lower extreme open-ended on the lower mould benevolence, the second wedge slide install in spacing intracavity.

Through adopting above-mentioned technical scheme, through the slip direction of spacing chamber restriction second wedge, play the guide effect.

The present invention may be further configured in a preferred embodiment as: first wedge is kept away from the lateral wall that goes up of second wedge is provided with first extension spring pole, spacing chamber orientation the extension spring groove has been seted up to the chamber wall of mounting groove, the extension spring inslot is provided with second extension spring pole, first extension spring pole with it is equipped with the extension spring to pull between the second extension spring pole.

Through adopting above-mentioned technical scheme, make first wedge promote to press the flitch to remove the back through the extension spring that sets up and can resume original position under the pulling force effect of extension spring, avoid influencing the material forming process of pressing next time.

The present invention may be further configured in a preferred embodiment as: the draw hooks at the two ends of the tension spring are closed circular rings, the upper end of the limiting cavity is open, the upper end of the limiting cavity is fastened with an installation cover in a threaded manner, and the installation cover is abutted to the upper end of the second tension spring rod.

Through adopting above-mentioned technical scheme, the drag hook at extension spring both ends sets up to the ring form and makes the extension spring be difficult for deviating from first extension spring pole and second extension spring pole, and installation lid butt second extension spring pole upper end further reduces the possibility that the extension spring deviates from second extension spring pole.

The present invention may be further configured in a preferred embodiment as: and a limiting nut is fastened on the first tension spring rod through threads.

Through adopting above-mentioned technical scheme, further reduce the possibility that the extension spring is deviate from first extension spring pole through stop nut.

The present invention may be further configured in a preferred embodiment as: the mounting groove is the ladder groove, the mounting groove is close to along the less one end of the sectional area of axis direction spacing chamber sets up, press the flitch with the mounting groove is along the tank bottom butt of the great one end of the sectional area of axis direction.

Through adopting above-mentioned technical scheme, the mounting groove sets up to the ladder groove, and the great one end of sectional area along the axis direction plays limiting displacement to pressing the flitch for pressing during the flitch can not excessively imbed the mounting groove, the tank bottom thickness that the actuating lever passed reduces, reduces the friction area between cell wall and the actuating lever, reduces the friction between cell wall and the actuating lever.

The present invention may be further configured in a preferred embodiment as: the pressure flitch is provided with the guide bar towards the face of mounting groove, the guide bar has four, four the guide bar is divided and is established the both sides on pressure flitch upper portion and the both sides of lower part, four holes of sliding have been seted up along the tank bottom of the great one end of axis direction's sectional area to the mounting groove, four the guide bar one-to-one slide respectively install in four in the hole of sliding.

Through adopting above-mentioned technical scheme, through the glide direction of guide bar restriction pressure flitch, also support the weight of pressure flitch through the glide rod for press the flitch installation firmly, the glide direction degree of deviation is little.

To sum up, the utility model discloses a following at least one useful technological effect:

1. during stamping forming, a stamping part is placed on the lower die core, the upper die base drives the upper die core to move towards the lower die core, the upper part of the lower die core is embedded into the lower part of the upper die core, a forming cavity is formed between the upper die core and the lower die core, meanwhile, the lower edge of the stamping part is extruded and turned over to form a flanging, the material pressing plate is pushed by the driving mechanism to extrude the flanging to a certain extent, folds on the flanging are smoothed by extrusion, compared with the mode that the materials are punched after being pressed, the mode that the materials are pressed and smoothed by the material pressing plate after being pressed and formed is smaller in change of the thickness of the flanging;

2. the pressing cylinder drives the second wedge block to move upwards, the second wedge block pushes the first wedge block to move towards the mounting groove, so that the pressing plate is pushed to move away from the mounting groove, the pressing plate extrudes the folded edge of the stamping part so as to extrude and smooth the fold on the folded edge, and the extrusion force is not directly driven by the cylinder to be large due to the force transmission of the first wedge block and the second wedge block, so that the condition that the folded edge of the stamping part is excessively deformed under extrusion to cause the thickness to be too small and not meet the requirement is reduced;

3. the tension spring is arranged, so that the pressure plate can be restored to the original position after the second wedge-shaped block moves downwards, and the next pressure forming is not affected.

Drawings

Fig. 1 is an exploded view of the present invention;

FIG. 2 is a schematic structural view of the lower die holder and the lower die core;

FIG. 3 is an enlarged partial schematic view of portion A of FIG. 2;

fig. 4 is a partial cross-sectional view of the present invention.

Reference numerals: 1. an upper die holder; 2. a lower die holder; 3. an upper die core; 4. a lower die core; 41. mounting grooves; 42. a material pressing plate; 421. a guide bar; 43. a sliding hole; 5. mounting blocks; 51. a limiting cavity; 511. an anti-interference cavity; 512. a tension spring groove; 61. a material pressing cylinder; 62. a drive rod; 63. a first wedge block; 631. a first tension spring rod; 632. a second tension spring rod; 64. a second wedge block; 65. a tension spring; 66. a limit nut; 67. installing a cover; 671. and (4) inner hexagonal holes.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, for the utility model discloses a fashioned mechanism of preventing corrugating of die mould material pressing, including upper die base 1 and die holder 2, install mould benevolence 3 in the upper die base 1, install the lower mould benevolence 4 in the die holder 2, go up and form between mould benevolence 3 and the lower mould benevolence 4 and press the die cavity, lower mould benevolence 4 upper portion imbeds in 3 lower parts of mould benevolence.

Referring to fig. 3 and 4, a mounting groove 41 is formed in the side wall of the lower mold core 4, a pressure plate 42 is slidably mounted in the mounting groove 41, the mounting groove 41 is a stepped groove, a mounting block 5 is arranged in the lower mold core 4, the mounting block 5 and the side wall of the lower mold core 4 are integrally fixed, a limiting cavity 51 which penetrates up and down is formed in the mounting block 5 along the height direction, one end of the mounting groove 41 with a smaller sectional area along the axial direction is arranged close to the limiting cavity 51, and the pressure plate 42 is abutted to the groove bottom of one end of the mounting groove 41 with a larger sectional area along the; the pressure flitch 42 is provided with guide bar 421 towards the face of mounting groove 41, and there are four guide bars 421, and four guide bars 421 divide and establish the both sides on pressure flitch 42 upper portion and the both sides of lower part, and the tank bottom of the great one end of mounting groove 41 along the axis direction's sectional area is seted up four and is run through the hole 43 that slides of lower mould benevolence 4, and four guide bars 421 one-to-one slide respectively and install in four slide holes 43 and the end runs through the setting of the 4 lateral walls of lower mould benevolence.

Still be provided with the actuating mechanism that the drive swage plate 42 slided along 41 axis directions of mounting groove in the lower mould benevolence 4, actuating mechanism includes swage cylinder 61, actuating lever 62, first wedge 63 and second wedge 64, the perpendicular swage plate 42 setting of actuating lever 62 one end and with swage plate 42 fixed connection, the other end runs through the tank bottom of mounting groove 41 and with first wedge 63 welded fastening, swage cylinder 61 lower extreme and lower mould benevolence 4 fixed connection, and the vertical setting of piston rod is arranged in spacing chamber 51, second wedge 64 slides and installs in spacing chamber 51, the end and the second wedge 64 welded fastening of the piston rod of swage cylinder 61, the wedge butt of first wedge 63 and second wedge 64.

The side wall of the second wedge block 64 far from the first wedge block 63 is abutted against the cavity wall of the limiting cavity 51, so that the second wedge block 64 is limited by the limiting cavity 51 when extruding the first wedge block 63, the first wedge block 63 is better driven to move, the middle part of the limiting cavity 51 facing the cavity wall of the mounting groove 41 is provided with an anti-interference cavity 511, the cavity wall of the limiting cavity 51 is prevented from abutting against the first wedge block 63 to interfere with each other, the upper side wall of the first wedge block 63 far from the second wedge block 64 is provided with a first pull spring rod 631, the upper part of the limiting cavity 51 facing the cavity wall of the mounting groove 41 is further provided with a pull spring groove 512, a second pull spring rod 632 is arranged in the pull spring groove 512, a pull spring 65 is arranged between the first pull spring rod 631 and the second pull spring rod 632 in a pulling manner, the pull hooks at two ends of the pull spring 65 are closed circular rings, the two ends of the pull spring 65 are respectively sleeved on the first pull spring rod 631 and the second pull spring rod 632, a, spacing chamber 51 upper end screw fastening has the installation lid 67, and interior hexagonal hole 671 is seted up to the up end of installation lid 67 and is conveniently installed the dismantlement and the installation of lid 67, and installation lid 67 and second tension spring pole 632 upper end butt are covered.

The implementation principle of the embodiment is as follows: when in punch forming, a stamping part is placed on the lower die core 4, the upper die base 1 drives the upper die core 3 to move towards the lower die core 4, the upper part of the lower die core 4 is embedded into the lower part of the upper die core 3, a forming cavity is formed between the upper die core 3 and the lower die core 4, meanwhile, the stamping part is folded at the lower extrusion edge to form a flanging, the second wedge-shaped block 64 is driven to move upwards by the material pressing air cylinder 61, the second wedge-shaped block 64 pushes the first wedge-shaped block 63 to move towards the mounting groove 41, so that the material pressing plate 42 is pushed to move away from the mounting groove 41, the material pressing plate 42 extrudes the flanging of the stamping part so as to extrude and smooth the corrugation on the flanging, because the force is transmitted by the first wedge-shaped block 63 and the second wedge-shaped block 64, the extrusion force is not directly driven by the air cylinder so large, thereby reducing the situation that the, the pressure plate 42 is arranged at the lower side of the flanging and mainly extrudes the lower part of the flanging, so that the thickness of a small part of the lower part of the flanging is changed while wrinkles are eliminated, and the influence on the whole is small.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a fashioned mechanism of wrinkling of preventing of die mould material is pressed, includes upper die base (1) and die holder (2), install mould benevolence (3) in upper die base (1), install lower mould benevolence (4) in die holder (2), go up mould benevolence (3) with form between lower mould benevolence (4) and press die cavity, its characterized in that: the upper portion of the lower die core (4) is embedded into the lower portion of the upper die core (3), a mounting groove (41) is formed in the side wall of the lower die core (4), a pressure plate (42) is slidably mounted in the mounting groove (41), and a driving mechanism for driving the pressure plate (42) to slide along the axis direction of the mounting groove (41) is further arranged in the lower die core (4).

2. The material pressing and forming anti-wrinkling mechanism of the stamping die as claimed in claim 1, wherein: actuating mechanism is including pressing die cylinder (61), actuating lever (62), first wedge (63) and second wedge (64), actuating lever (62) one end is perpendicular press die pad (42) set up and with press die pad (42) fixed connection, the other end with first wedge (63) fixed connection, press die cylinder (61) lower extreme with lower mould benevolence (4) fixed connection, and the vertical setting of piston rod, second wedge (64) set up in press the end of the piston rod of die cylinder (61), the wedge of first wedge (63) with the wedge butt of second wedge (64).

3. The anti-wrinkling mechanism for the pressing forming of the stamping die as claimed in claim 2, wherein: the lower die core (4) is further provided with a limiting cavity (51) with an open lower end, and the second wedge-shaped block (64) is slidably arranged in the limiting cavity (51).

4. The anti-wrinkling mechanism for the pressing forming of the stamping die as claimed in claim 3, wherein: keep away from first wedge (63) the last lateral wall of second wedge (64) is provided with first spring rod (631), spacing chamber (51) orientation spring groove (512) have been seted up to the chamber wall of mounting groove (41), be provided with second spring rod (632) in spring groove (512), first spring rod (631) with draw between second spring rod (632) and be equipped with extension spring (65).

5. The anti-wrinkling mechanism for the pressing forming of the stamping die as claimed in claim 4, wherein: the drag hook at extension spring (65) both ends is the confined ring, spacing chamber (51) upper end opening, just spacing chamber (51) upper end screw fastening has installation lid (67), installation lid (67) with second extension spring pole (632) upper end butt.

6. The anti-wrinkling mechanism for the pressing forming of the stamping die as claimed in claim 5, wherein: and a limiting nut (66) is fastened on the first tension spring rod (631) through threads.

7. The anti-wrinkling mechanism for the pressing forming of the stamping die as claimed in claim 6, wherein: mounting groove (41) are the ladder groove, the mounting groove (41) is close to along the less one end of axis direction's sectional area spacing chamber (51) set up, pressure flitch (42) with the tank bottom butt of the great one end of axis direction's sectional area is followed in mounting groove (41).

8. The anti-wrinkling mechanism for the pressing forming of the stamping die as claimed in claim 7, wherein: the face of pressing flitch (42) towards mounting groove (41) is provided with guide bar (421), guide bar (421) have four, four guide bar (421) are divided and are established both sides and the both sides of lower part on pressing flitch (42) upper portion, four holes (43) that slide have been seted up along the tank bottom of the great one end of axis direction's sectional area to mounting groove (41), four guide bar (421) one-to-one slide respectively install in four slide in hole (43).