CN213052283U - Drawing die with edge pressing ring delay mechanism - Google Patents

Drawing die with edge pressing ring delay mechanism Download PDF

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Publication number
CN213052283U
CN213052283U CN202021775783.8U CN202021775783U CN213052283U CN 213052283 U CN213052283 U CN 213052283U CN 202021775783 U CN202021775783 U CN 202021775783U CN 213052283 U CN213052283 U CN 213052283U
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China
Prior art keywords
die
blank holder
holder
insert
male
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CN202021775783.8U
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Chinese (zh)
Inventor
卢金山
李宏斌
戴新丰
黄海敏
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WUXI ZHUHUA MACHINERY TECHNOLOGY CO LTD
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WUXI ZHUHUA MACHINERY TECHNOLOGY CO LTD
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Abstract

The utility model relates to a drawing die with a blank holder delay mechanism, which comprises a female die component, a blank holder component and a male die component which are arranged from top to bottom in sequence, wherein an inverted U-shaped lining plate is arranged in the female die component, an upper pressure plate is arranged on the inner bottom surface of the female die component, an upper ejector block is arranged on the bottom surface of a support arm, and the lining plate drives the upper pressure plate and the upper ejector block to move up and down under the action of an upper nitrogen cylinder; the edge pressing ring positioned outside the side face of the edge pressing ring insert is symmetrically provided with air cylinders, the output ends of the air cylinders are horizontal, and the output end parts of the air cylinders are provided with lower ejector blocks; the blank holder insert and the male die are supported below the material sheet, and the upper pressing plate applies force above the material sheet before the female die insert so as to preform the material sheet; after the die assembly is carried out, the output end of the air cylinder extends out to enable the lower ejector block to be located under the upper ejector block and to be mutually abutted, so that the upper pressing plate is prevented from independently applying force to the formed material sheet from the upper side to cause product crush in the process of ascending and separating from the male die assembly on the female die assembly, the problem of local wrinkling is effectively solved by matching with preforming, and the product forming quality is guaranteed.

Description

Drawing die with edge pressing ring delay mechanism
Technical Field
The utility model belongs to the technical field of drawing die technique and specifically relates to a drawing die with blank holder delay mechanism.
Background
In the prior art, in the forming process of a drawing die, a female die firstly presses a blank holder, and then in the process that the female die and the blank holder descend together, a male die applies force to a material sheet from the lower part to form the material sheet; the local part of a material sheet is very easy to wrinkle in the forming process of the existing drawing structure, and the local preforming of a male die cannot be realized.
SUMMERY OF THE UTILITY MODEL
The drawing die with the blank holder delay mechanism is reasonable in structure, so that local preforming of a male die is achieved, the wrinkling problem is solved, damage to a formed material sheet during die opening is avoided, and the forming quality of the material sheet is effectively guaranteed.
The utility model discloses the technical scheme who adopts as follows:
the utility model provides a drawing die with blank holder delay mechanism, includes from last die assembly, blank holder subassembly and the terrace die subassembly that sets gradually down, the structure of die assembly is: the device comprises an upper die base, wherein an upper base plate is arranged on the top surface of the upper die base, a plurality of upper nitrogen cylinders are fixedly arranged on the bottom surface of the upper base plate, the upper nitrogen cylinders are accommodated in the upper die base, the output ends of the plurality of upper nitrogen cylinders face downwards, and the end parts of the plurality of upper nitrogen cylinders are jointly provided with a lining plate; the lining plate is of an inverted U-shaped structure, an upper pressing plate is mounted on the inner bottom surface of the lining plate, upper jacking blocks are mounted on the bottom surfaces of two support arms of the lining plate respectively, and the upper pressing plate and the upper jacking blocks penetrate through the upper die base downwards; a female die insert is arranged in the middle of the bottom surface of the upper die base positioned on the inner side of the upper pressing plate;
the structure of blank holder subassembly does: the stamping die comprises a blank holder, wherein the middle part of the blank holder is provided with a male die hole for the male die in the male die component to move up and down, and blank holder inserts are arranged on the top surface of the blank holder positioned at two sides of the male die hole; the edge pressing ring positioned outside the side face of the edge pressing ring insert block is also symmetrically provided with air cylinders, the output ends of the air cylinders move in the horizontal direction, and the output end parts of the air cylinders are provided with lower ejector blocks;
after the die is closed, the output end of the air cylinder extends out to enable the lower ejector block to be located under the upper ejector block and to be mutually abutted.
As a further improvement of the above technical solution:
the male die component is structurally characterized in that: the die comprises a lower die holder, wherein a male die is arranged in the middle of the top surface of the lower die holder and extends into a male die hole of a blank holder; a lower cushion plate is embedded in the bottom surface of the lower die base, and a plurality of lower nitrogen cylinders are mounted on the top surface of the lower cushion plate; the lower nitrogen cylinder is accommodated in the lower die holder, the output end of the lower nitrogen cylinder faces upwards, the end part of the lower nitrogen cylinder penetrates through the lower die holder upwards, and the plurality of lower nitrogen cylinders are arranged outside the periphery of the male die;
and the bottom surface of the blank holder is provided with ejector blocks which correspond to the lower nitrogen cylinders one to one.
The male die is positioned right below the female die insert and the upper pressure plate; and during die assembly, the die insert and the upper pressure plate are synchronously assembled with the male die through the material sheet.
A guide post is arranged between the lower die holder and the blank holder; and the end parts of the two ends of the lower die base are provided with protection plates.
And guide plates are embedded in the side surfaces of two sides of the upper die seat, and guide grooves correspondingly matched with the guide plates are formed in the side surfaces of two sides of the blank holder.
And the positioning tools are arranged on the blank holder positioned on the peripheral outer part of the blank holder insert, the top surfaces of the positioning tools are higher than the top surface of the blank holder insert, and material sheets are arranged among the positioning tools positioned above the blank holder insert.
And an inductor is arranged on the blank holder positioned outside the lower top block.
The utility model has the advantages as follows:
the utility model has compact and reasonable structure and convenient operation, the blank holder insert and the male die are supported below the material sheet, the upper pressure plate applies force to the upper part of the material sheet downwards before the female die insert, and the material sheet is partially preformed due to the existence of the upper pressure plate; after the die is assembled, the output end of the air cylinder extends out to enable the lower ejection block to be located under the upper ejection block and to be mutually abutted, so that the lower ejection block is separated from the male die assembly on the female die assembly and the material sheet along with the blank holder assembly, namely, the male die is separated from the blank holder insert and the material sheet is formed, the phenomenon that the upper pressing plate applies force to the formed material sheet from the upper side alone to cause product damage is avoided, the problem of local wrinkling is effectively solved through preforming, and meanwhile, the forming quality of the product is guaranteed.
Drawings
Fig. 1 is a schematic structural diagram of the present invention (before mold closing).
Fig. 2 is a schematic structural view of the female die assembly of the present invention.
Fig. 3 is an exploded view of fig. 2.
Fig. 4 is a schematic structural view of the blank holder assembly of the present invention.
Fig. 5 is an exploded view of the male die assembly of the present invention.
Fig. 6 is a schematic structural diagram of the present invention (after mold closing).
Fig. 7 is a partially enlarged view of a portion a in fig. 6.
Wherein: 1. a female die assembly; 2. a web; 3. a blank holder assembly; 4. a male die assembly;
11. an upper die holder; 12. an upper pressure plate; 13. a female die insert; 14. a guide plate; 15. a top block is arranged; 16. a liner plate; 17. a nitrogen feeding cylinder; 18. an upper base plate;
31. a blank holder; 311. a male die hole; 312. a guide groove; 32. a top block; 33. an inductor; 34. a lower top block; 35. a cylinder; 36. a blank holder insert; 37. a positioning tool;
41. a lower die holder; 42. a lower nitrogen cylinder; 43. a lower base plate; 44. a guide post; 45. a protection plate; 46. and (4) a male die.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, the drawing die with the blank holder delay mechanism of the embodiment includes a female die assembly 1, a blank holder assembly 3, and a male die assembly 4, which are sequentially arranged from top to bottom, and as shown in fig. 2 and 3, the female die assembly 1 has the structure: the device comprises an upper die base 11, wherein an upper cushion plate 18 is arranged on the top surface of the upper die base 11, a plurality of upper nitrogen cylinders 17 are fixedly arranged on the bottom surface of the upper cushion plate 18, the upper nitrogen cylinders 17 are accommodated in the upper die base 11, the output ends of the plurality of upper nitrogen cylinders 17 face downwards, and a lining plate 16 is arranged at the end part of the plurality of upper nitrogen cylinders 17; the lining plate 16 is of an inverted U-shaped structure, an upper pressing plate 12 is arranged on the inner bottom surface of the lining plate 16, upper jacking blocks 15 are respectively arranged on the bottom surfaces of two support arms of the lining plate 16, and the upper pressing plate 12 and the upper jacking blocks 15 both penetrate through the upper die holder 11 downwards; a female die insert 13 is arranged in the middle of the bottom surface of the upper die base 11 positioned on the inner side of the upper pressure plate 12;
as shown in fig. 4, the structure of the binder assembly 3 is: the stamping die comprises a blank holder 31, wherein the middle part of the blank holder 31 is provided with a punch hole 311 for the punch 46 in the punch component 4 to move up and down, and blank holder inserts 36 are arranged on the top surface of the blank holder 31 positioned at two sides of the punch hole 311; the blank holder 31 positioned outside the side surface of the blank holder insert block 36 is also symmetrically provided with air cylinders 35, the output end of each air cylinder 35 moves in the horizontal direction, and the output end part of each air cylinder is provided with a lower ejector block 34;
after the mold is closed, the output end of the cylinder 35 is extended so that the lower top block 34 is positioned right below the upper top block 15 and against each other, as shown in fig. 6 and 7.
As shown in fig. 5, the male mold assembly 4 has the structure: the stamping die comprises a lower die holder 41, wherein a male die 46 is arranged in the middle of the top surface of the lower die holder 41, and the male die 46 extends into a male die hole 311 of a blank holder 31; a lower cushion plate 43 is embedded on the bottom surface of the lower die holder 41, and a plurality of lower nitrogen cylinders 42 are arranged on the top surface of the lower cushion plate 43; the lower nitrogen cylinder 42 is accommodated in the lower die holder 41, the output end of the lower nitrogen cylinder 42 faces upward, the end part of the lower nitrogen cylinder 42 penetrates through the lower die holder 41 upwards, and the plurality of lower nitrogen cylinders 42 are arranged outside the periphery of the male die 46;
the bottom surface of the blank holder 31 is provided with the top blocks 32 which are in one-to-one correspondence with the lower nitrogen cylinders 42; the lower nitrogen cylinder 42 applies force to the blank holder 31 and the blank holder assembly 3 through the top block 32, so that the blank holder assembly 3 moves up and down relative to the male die assembly 4.
The punch 46 is located directly below the die insert 13 and the upper platen 12; when the die is closed, the die insert 13 and the upper pressure plate 12 are synchronously assembled with the male die 46 through the material sheet 2.
A guide column 44 is arranged between the lower die holder 41 and the blank holder 31; and the two end parts of the lower die holder 41 are provided with protective plates 45, and the guide columns 44 play a role in guiding when the blank holder assembly 3 moves up and down relative to the male die assembly 4.
The side surfaces of the two sides of the upper die holder 11 are embedded with guide plates 14, the side surfaces of the two sides of the blank holder 31 are provided with guide grooves 312 correspondingly matched with the guide plates 14, and when the female die assembly 1 moves up and down relative to the blank holder assembly 3, the guide plates 14 are assembled with the guide grooves 312 to play a role in guiding.
The blank holder 31 positioned on the peripheral outer part of the blank holder insert block 36 is provided with a positioning tool 37, the top surface of the positioning tool 37 is higher than that of the blank holder insert block 36, and the material sheets 2 are placed among the positioning tools 37 positioned above the blank holder insert block 36.
An inductor 33 is mounted on the blank holder 31 outside the lower top block 34, and a fully clamped state is induced by the inductor 33.
The utility model discloses a theory of operation does:
placing the web 2 between the locators 37 above the binder assemblies 3;
the external press works to drive the female die assembly 1 to move downwards; the die insert 13 below the die assembly 1 firstly presses the material sheet 2 to gradually approach and contact the blank holder insert 36;
the female die assembly 1 continues to descend, the upper pressure plate 12 presses the material sheet 2 to be in contact with the male die 46, the upper nitrogen cylinder 17 gradually contracts and applies force to the upper pressure plate 12 through the lining plate 16, so that the material sheet 2 and the male die 46 are pressed by the upper pressure plate 12 to start forming until the upper nitrogen cylinder 17 is completely compressed, and partial preforming of the position, opposite to the upper pressure plate 12, of the male die 46 on the material sheet 2 is achieved;
the female die assembly 1 continues to move downwards, the lower nitrogen cylinder 42 gradually contracts, the blank holder assembly 3 and the female die assembly 1 move downwards relative to the male die assembly 4 together, the male die 46 extends upwards from a male die hole 311 in the middle of the blank holder insert 36, and the female die insert 13 presses the material sheet 2 and the male die 46 to be gradually molded; in the process, the upper pressure plate 12 is always attached to the male die 46 under the action of the upper nitrogen cylinder 17; until the lower nitrogen cylinder 42 is completely compressed, namely the blank holder assembly 3 and the female die assembly 1 move to the lowest end, the molding is completed, the female die insert 13 and the upper pressure plate 12 apply force above the material sheet 2, the blank holder insert 36 and the male die 46 are supported below the material sheet 2, and the die assembly is finished;
the cylinder 35 works to push the lower top block 34 to eject outwards, so that the lower top block 34 horizontally runs below the upper top block 15, and the lower top block 34 abuts against the upper top block 15, as shown in fig. 6 and 7;
the external press works reversely, under the compression action of the lower nitrogen cylinder 42, the blank holder assembly 3 and the female die assembly 1 synchronously move upwards, the male die 46 leaves the female die insert 13 and the upper pressing plate 12 until the lower nitrogen cylinder 42 is completely reset, and in the process, the female die insert 13 and the blank holder insert 36 are attached to the upper side and the lower side of the material sheet 2; although the punch 46 no longer supports the web 2 from below, the liner 16 does not descend due to the compression of the upper nitrogen cylinder 17 due to the abutment of the lower top block 34 and the upper top block 15, and the bottom surface of the upper platen 12 and the web 2 are still in contact with each other during the mold closing; the cylinder 35, the lower top block 34 and the upper top block 15 form a delay mechanism for delaying the resetting of the upper nitrogen cylinder 17 and the upper pressure plate 12;
the external press continues to work reversely, the female die assembly 1 moves upwards relative to the blank holder assembly 3, the female die insert 13 is separated from the blank holder insert 36 and the material sheet 2, the compressed upper nitrogen cylinder 17 starts to reset, in the resetting process, the upper ejector block 15 and the lower ejector block 34 are kept in a propping state until the resetting of the upper nitrogen cylinder 17 is completed, the upper ejector block 15 is separated from the lower ejector block 34, and the cylinder 35 works reversely to drive the lower ejector block 34 to reset;
and the external press continues to work reversely until the die opening state is completed, and the formed material sheet 2 is taken down.
In the embodiment, the blank holder insert 36 and the male die 46 are supported below the material sheet 2, the upper pressure plate 12 applies downward force to the material sheet 2 before the female die insert 13, and the material sheet 2 is partially preformed due to the existence of the upper pressure plate 12; after the die assembly is carried out, the output end of the air cylinder 35 extends out to enable the lower ejector block 34 to be located under the upper ejector block 15 and to be mutually abutted, so that the female die assembly 1 and the material sheet 2 are separated from the male die assembly 4 along with the blank holder assembly 3 in an ascending mode, namely, the male die 46 is separated from the blank holder insert 36 and the material sheet 2 is formed, and the phenomenon that the upper pressing plate 12 applies force to the formed material sheet 2 from the upper side alone to cause product damage is avoided.
The utility model is simple in operation, convenient to use when realizing the local preforming of terrace die, effectively solving the local problem of corrugating, has also avoided the damage of die sinking in-process product, has guaranteed the whole shaping quality of tablet.
The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made within the scope of the invention.

Claims (7)

1. The utility model provides a drawing die with blank holder delay mechanism, includes from last die assembly (1), blank holder subassembly (3) and terrace die subassembly (4) that set gradually down, its characterized in that: the structure of the female die component (1) is as follows: the device comprises an upper die holder (11), wherein an upper base plate (18) is installed on the top surface of the upper die holder (11), a plurality of upper nitrogen cylinders (17) are fixedly installed on the bottom surface of the upper base plate (18), the upper nitrogen cylinders (17) are accommodated in the upper die holder (11), the output ends of the plurality of upper nitrogen cylinders (17) face downwards, and lining plates (16) are installed at the end parts of the plurality of upper nitrogen cylinders; the lining plate (16) is of an inverted U-shaped structure, an upper pressing plate (12) is mounted on the inner bottom surface of the lining plate (16), upper ejector blocks (15) are mounted on the bottom surfaces of two support arms of the lining plate (16) respectively, and the upper pressing plate (12) and the upper ejector blocks (15) penetrate through the upper die holder (11) downwards; a die insert (13) is arranged in the middle of the bottom surface of the upper die holder (11) positioned on the inner side of the upper pressure plate (12);
the structure of blank holder subassembly (3) does: the stamping die comprises a blank holder (31), wherein a convex die hole (311) for enabling a male die (46) in a male die component (4) to move up and down is formed in the middle of the blank holder (31), and blank holder inserts (36) are arranged on the top surfaces of the blank holder (31) positioned on two sides of the convex die hole (311); the blank holder (31) positioned outside the side surface of the blank holder insert (36) is also symmetrically provided with air cylinders (35), the output end of each air cylinder (35) moves in the horizontal direction, and the output end part of each air cylinder is provided with a lower ejector block (34);
after the die is closed, the output end of the air cylinder (35) extends out to enable the lower ejector block (34) to be located under the upper ejector block (15) and to be abutted against each other.
2. The drawing die with the bezel delay mechanism as recited in claim 1, wherein: the male die component (4) is structurally characterized in that: the stamping die comprises a lower die holder (41), wherein a male die (46) is arranged in the middle of the top surface of the lower die holder (41), and the male die (46) extends into a male die hole (311) of a blank holder (31); a lower backing plate (43) is embedded in the bottom surface of the lower die base (41), and a plurality of lower nitrogen cylinders (42) are mounted on the top surface of the lower backing plate (43); the lower nitrogen cylinders (42) are accommodated in the lower die holder (41), the output ends of the lower nitrogen cylinders (42) face upwards, the end parts of the lower nitrogen cylinders upwards penetrate through the lower die holder (41), and the lower nitrogen cylinders (42) are arranged on the circumferential outer part of the male die (46);
and the bottom surface of the blank holder (31) is provided with ejector blocks (32) which correspond to the lower nitrogen cylinders (42) one by one.
3. The drawing die with the bezel delay mechanism as recited in claim 2, wherein: the male die (46) is positioned right below the die insert (13) and the upper pressure plate (12); when the die is closed, the die insert (13) and the upper pressure plate (12) are synchronously assembled with the male die (46) through the material sheet (2).
4. The drawing die with the bezel delay mechanism as recited in claim 2, wherein: a guide column (44) is arranged between the lower die holder (41) and the blank holder (31); and protection plates (45) are arranged at the end parts of the two ends of the lower die seat (41).
5. The drawing die with the bezel delay mechanism as recited in claim 1, wherein: the side surfaces of two sides of the upper die holder (11) are embedded with guide plates (14), and the side surfaces of two sides of the blank holder (31) are provided with guide grooves (312) correspondingly matched with the guide plates (14).
6. The drawing die with the bezel delay mechanism as recited in claim 1, wherein: and the positioning tools (37) are arranged on the blank holder (31) positioned on the circumferential outer part of the blank holder insert (36), the top surfaces of the positioning tools (37) are higher than the top surface of the blank holder insert (36), and the material sheets (2) are placed among the positioning tools (37) positioned above the blank holder insert (36).
7. The drawing die with the bezel delay mechanism as recited in claim 1, wherein: an inductor (33) is arranged on the blank holder (31) positioned outside the lower top block (34).
CN202021775783.8U 2020-08-21 2020-08-21 Drawing die with edge pressing ring delay mechanism Active CN213052283U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021775783.8U CN213052283U (en) 2020-08-21 2020-08-21 Drawing die with edge pressing ring delay mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021775783.8U CN213052283U (en) 2020-08-21 2020-08-21 Drawing die with edge pressing ring delay mechanism

Publications (1)

Publication Number Publication Date
CN213052283U true CN213052283U (en) 2021-04-27

Family

ID=75554047

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021775783.8U Active CN213052283U (en) 2020-08-21 2020-08-21 Drawing die with edge pressing ring delay mechanism

Country Status (1)

Country Link
CN (1) CN213052283U (en)

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