CN114054593A - Bending composite die structure of stainless steel narrow-band welding part - Google Patents
Bending composite die structure of stainless steel narrow-band welding part Download PDFInfo
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- CN114054593A CN114054593A CN202111296980.0A CN202111296980A CN114054593A CN 114054593 A CN114054593 A CN 114054593A CN 202111296980 A CN202111296980 A CN 202111296980A CN 114054593 A CN114054593 A CN 114054593A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/08—Dies with different parts for several steps in a process
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
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- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention relates to the field of dies, and particularly discloses a bending composite die structure of a stainless steel narrow-band welding piece, which comprises an upper die assembly and a lower die assembly, wherein the upper die assembly comprises an upper die frame, a nitrogen spring, a primary forming piece and a secondary forming piece, the nitrogen spring is connected between the upper die frame and an upper die base of a punch press, the primary forming piece is formed by splicing a plurality of primary forming plates, and one shot forming spare bottom is provided with annular one shot forming inclined plane, the lower mould assembly includes die carrier down, the standing groove, outer clamping piece and interior clamping piece, the standing groove comprises the annular region between outer clamping piece and the interior clamping piece, outer clamping piece is formed by the concatenation of the outer clamping piece of a plurality of, interior clamping piece is formed by the concatenation of the clamping piece in the a plurality of, the medial surface of outer clamping piece and the lateral surface shape looks adaptation of stainless steel narrowband welding piece, the lateral surface of interior clamping piece and the medial surface shape looks adaptation of stainless steel narrowband welding piece. The invention can realize the profiling of the seal ring in one-time stamping process.
Description
Technical Field
The invention belongs to the field of dies, and particularly relates to a bending composite die structure of a stainless steel narrow-band welding part.
Background
The gas meter steel shell sealing ring is a stainless steel narrow band which is punched and formed by a punch after the end heads of the stainless steel narrow band are welded, and the shape of the gas meter steel shell sealing ring is a rectangular ring. The profiling of sealing washer among the prior art need pass through twice stamping process, and the first punching press is pressed into an inclined plane of inside buckling with the sealing washer top, and the secondary punching press is with this inclined plane flattening again, and the profiling process of sealing washer is comparatively loaded down with trivial details, and needs two punches press to realize the twice punching press of sealing washer, and the cost is higher.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a bending composite die structure of a stainless steel narrow-band welding piece, which aims to solve the problems that the sealing ring profiling process is complicated and the cost is high due to the fact that two stamping processes are needed in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
a bending composite die structure of a stainless steel narrow-band welding piece comprises an upper die assembly and a lower die assembly,
the upper die assembly comprises an upper die frame, a nitrogen spring, a primary forming part and an secondary forming part, wherein the nitrogen spring is connected between the upper die frame and an upper die base of a punch press, the primary forming part is arranged at the bottom of the upper die frame and is formed by splicing a plurality of primary forming plates, the bottom of the primary forming part is provided with a circumferential primary forming inclined plane, the secondary forming part is positioned at the inner side of the primary forming part, and the secondary forming part is arranged at the bottom of the upper die base of the punch press;
lower mould assembly includes die carrier, standing groove, outer clamping piece and interior clamping piece down, the die carrier is connected on the die holder of punch press down, the standing groove is used for placing stainless steel narrowband welding piece, interior clamping piece is located outer clamping piece is inboard, the standing groove by annular region between outer clamping piece and the interior clamping piece constitutes, outer clamping piece is formed by the outer tight piece concatenation of the outer clamp of a plurality of, interior clamping piece is formed by the concatenation of the interior clamping piece of a plurality of, the medial surface of outer clamping piece with the lateral surface shape looks adaptation of stainless steel narrowband welding piece, the lateral surface of interior clamping piece with the medial surface shape looks adaptation of stainless steel narrowband welding piece.
Furthermore, the upper die base is fixed with the cutting corresponding to each primary forming plate, the cutting is located on the outer side of each primary forming plate, the outer side face of each primary forming plate is elastically abutted against the inner side face of the cutting, and the inner side face of the cutting is provided with a protruding portion and an inward sinking portion.
Furthermore, the bottom of the inner side surface of the inserting strip is provided with an outer clamping inclined surface which can elastically abut against the outer edge of the outer clamping block.
Further, the inclination of the one-step forming inclined plane at the bottom of the one-step forming piece is 30-60 degrees.
Further, the mould structure comprises at least two groups of upper mould assemblies and lower mould assemblies which are transversely arranged side by side.
Further, one-time formed part is formed by four one-time profiled sheeting concatenations, outer clamping piece is formed by four outer clamping block concatenations, interior clamping piece is formed by four interior clamping block concatenations, four one-time profiled sheeting, four outer clamping block and four interior clamping block all with four side one-to-one of stainless steel narrowband welding piece.
Further, the secondary forming part is an annular body, an auxiliary inner clamping column capable of being inserted downwards between the four inner clamping blocks is further fixed on the inner side of the secondary forming part on the upper die base, an auxiliary inner clamping inclined plane is arranged at the top of each inner clamping block, and auxiliary clamping is realized by the auxiliary inner clamping inclined plane which is used for supporting the inner clamping blocks and is arranged at the bottom of each auxiliary inner clamping column when the auxiliary inner clamping columns move downwards.
The invention has the beneficial effects that:
1. the invention is provided with a primary forming part and an secondary forming part, the sealing ring is pre-bent through the primary forming part, then the primary forming part gives up a space for the secondary forming part to move downwards, secondary pressing is carried out through the secondary forming part, two pressing processes are realized in the process of downwards closing the die by an upper die frame of a punch press, and the pressing of the sealing ring is completed through a primary stamping process.
2. The inner clamping piece and the outer clamping piece are arranged, the sealing ring is clamped between the inner clamping piece and the outer clamping piece, the initial irregular shape of the sealing ring is extruded into a regular shape meeting the requirement, and the primary positioning of the sealing ring on the lower die frame can be realized.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
FIG. 2 is a view of one set of the upper and lower die assemblies of FIG. 1.
Fig. 3 is a structural view of the lower mold assembly of fig. 2.
FIG. 4 is a top view of FIG. 3 with both the outer clamp and the inner clamp in a relaxed state.
FIG. 5 is a schematic view of the outer clamp member and the inner clamp member of FIG. 4 in a clamped state.
Fig. 6 is a block diagram of the upper mold assembly of fig. 2.
FIG. 7 is a longitudinal cross-sectional view of the slip of FIG. 6.
FIG. 8 is a diagram of the forming process of a stainless steel strip weld.
Wherein the reference numerals include:
an upper die holder 1,
A lower die base 2,
The upper die assembly 3, a mounting seat 301, a nitrogen spring 302, an insert bar 303, an outer clamping inclined surface 3030, a convex part 3031, an inner concave part 3032, an auxiliary inner clamping column 304, an upper die frame 305, a guide column 306, a primary forming plate 307, a primary forming inclined surface 3070, a secondary forming part 308, a lower die assembly and a lower die assembly,
The lower die assembly 4, a lower die frame 401, an outer clamping block 402, an inner clamping block 403, an auxiliary inner clamping bevel 4031, a guide hole 404, a placement groove 405 and an insertion hole 406.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In specific implementation, as shown in fig. 1 and 2:
the utility model provides a crooked composite die structure of stainless steel narrowband welding piece, includes mould assembly 3 and lower mould assembly 4, goes up mould assembly 3 and lower mould assembly 4 and transversely sets up side by side and can be a set of or multiunit, and this embodiment is two sets of, and die mould when being applicable to two stainless steel narrowband welding pieces (seal ring).
The structure of the lower die assembly 4 is as shown in fig. 3 and fig. 4, and the lower die assembly comprises a lower die frame 401, a placing groove 405, an outer clamping piece and an inner clamping piece, wherein the lower die frame 401 is fixedly installed on the lower die base 2 of the punch press through bolts, the placing groove 405 is used for placing a stainless steel narrow band welding piece, the inner clamping piece is located on the inner side of the outer clamping piece, and the placing groove 405 is formed by an annular area between the outer clamping piece and the inner clamping piece.
The outer clamping piece is formed by splicing a plurality of outer clamping blocks 402, the inner clamping piece is formed by splicing a plurality of inner clamping blocks 403, the shape of the inner side face of the outer clamping piece is matched with that of the outer side face of the stainless steel narrow band welding piece, and the shape of the outer side face of the inner clamping piece is matched with that of the inner side face of the stainless steel narrow band welding piece. In this embodiment, the outer clamping member is formed by splicing four outer clamping blocks 402, the inner clamping member is formed by splicing four inner clamping blocks 403, and the four outer clamping blocks 402 and the four inner clamping blocks 403 are all in one-to-one correspondence with four sides of the stainless steel narrow band welding member.
The clamping mode of the outer clamping piece is as follows: an outer clamping return spring is arranged between each outer clamping block 402 and the lower die frame 401, the extension direction of the outer clamping return spring is perpendicular to the side face of the stainless steel narrow-band welding piece corresponding to the outer clamping return spring, when each outer clamping block 402 is subjected to a force towards the inner clamping block 403, each outer clamping block 402 moves towards the direction perpendicular to the side face of the stainless steel narrow-band welding piece corresponding to the outer clamping block, until the inner side face of each outer clamping block 402 is completely attached to the outer side face of the stainless steel narrow band, namely, the outer clamping of the stainless steel narrow-band welding piece by the outer clamping piece is realized, and the outer clamping return spring is stretched in the process; when the external force applied to each outer clamping block 402 is removed, each outer clamping block 402 retreats under the elastic force of the outer clamping return spring, so that the outer clamping piece releases the stainless steel narrow-band welding piece.
The clamping mode of the inner clamping piece is as follows: the four internal clamping blocks 403 are driven by the air cylinder or the hydraulic cylinder, so that the internal clamping blocks 403 move along the direction perpendicular to the side faces of the stainless steel narrow-band welding pieces corresponding to the internal clamping blocks 403, when the air cylinder or the hydraulic cylinder drives the four internal clamping blocks 403 to extend out to the outer side faces of the four internal clamping blocks 403 to be completely attached to the inner side faces of the stainless steel narrow-band welding pieces, the internal clamping of the internal clamping pieces on the stainless steel narrow-band welding pieces is achieved, and when the air cylinder or the hydraulic cylinder drives the four internal clamping blocks 403 to retract, the internal clamping pieces loosen the stainless steel narrow-band welding pieces is achieved.
The upper mold assembly 3 is structured as shown in fig. 2, 6 and 7, and includes a mounting base 301, an upper mold frame 305, a nitrogen spring 302, a primary molded part and a secondary molded part.
During installation, the installation base 301 is fixedly installed at the bottom of an upper die base 1 of a punch press through bolts, the nitrogen spring 302 is connected between the upper die base 305 and the installation base 301, and a gap of about 1mm is reserved between the bottom of the nitrogen spring 302 and the top of the upper die base 305.
The one-step forming piece is arranged at the bottom of the upper die frame 305, the one-step forming piece is of a split type annular structure formed by splicing a plurality of one-step forming plates 307, the inner edge of the bottom of the one-step forming piece is provided with a circumferential one-step forming inclined surface 3070, the inclination of the one-step forming inclined surface 3070 at the bottom of the one-step forming piece is 30-60 degrees, preferably 45 degrees, the annular contour of the one-step forming inclined surface 3070 at the bottom of the one-step forming piece is matched with the contour of the stainless steel narrow-band welding piece, so that when the one-step forming inclined surface 3070 at the bottom of the one-step forming piece is pressed on the top of the stainless steel narrow-band welding piece, the top profiling of the stainless steel narrow-band welding piece can be the same inclination as the one-step forming inclined surface 3070. In this embodiment, the primary forming member is formed by splicing four primary forming plates 307, and the four primary forming plates 307 correspond to four sides of the stainless steel strip welding member one by one.
Overmold 308 is positioned on the inside of the overmold, and overmold 308 is fixedly connected to the mount, the overmold being an integral ring.
The mounting seat 301 is fixed with an insert 303 corresponding to each primary molding plate 307, the insert 303 is positioned outside the primary molding plate 307, the outer side surface of the primary molding plate 307 is elastically abutted against the inner side surface of the insert 303, and the inner side surface of the insert 303 is provided with a convex portion 3031 and an inward concave portion 3032. Here, the meaning that the outer side surface of the primary molded plate 307 is elastically abutted against the inner side surface of the slip 303 means: a one-shot forming return spring is connected between the outer side surface of the one-shot forming plate 307 and the upper mold frame 305, and the outer side surface of the one-shot forming plate 307 abuts against the inner side surface of the insert 303. When the outer side surface of the primary forming plate 307 abuts against the protruding portion of the insert bar 303, the primary forming return spring is in a compressed state, the four primary forming plates 307 are in a clamping state, and the primary forming part and the secondary forming part 308 have an overlapping portion in horizontal projection; when the outer side surface of the primary molding plate 307 abuts against the recessed portion of the insert 303, the four primary molding plates 307 of the primary molding member are away from each other, and a space for the secondary molding member 308 to move downward is provided.
The bottom of the inner side surface of the insert 303 is also provided with an outer clamping inclined surface 3030 which can be abutted against the outer edge of the outer clamping block 402. The lower die frame 401 is provided with jacks 406 for inserting the inserts 303, and when the upper die assembly 3 moves downwards and each insert 303 is inserted into the corresponding jack 406 downwards, the outer clamping blocks 402 retract and extend through the matching of the outer clamping inclined planes 3030 at the bottoms of the inserts 303 and the outer edges of the outer clamping blocks 402.
An auxiliary inner clamping column 304 capable of being inserted downwards among the four inner clamping blocks 403 is further fixed on the mounting base 301 on the inner side of the secondary forming member 308, an auxiliary inner clamping inclined surface 4031 is arranged at the top of each inner clamping block 403, and when the auxiliary inner clamping column 304 moves downwards, the auxiliary inner clamping inclined surface 4031 of each inner clamping block 403 is propped open by the bottom of the auxiliary inner clamping column 304 to realize auxiliary inner clamping.
The invention completes one-time stamping process and comprises the following stages:
(1) and (3) ring sealing and feeding:
at this stage, the four outer clamping blocks 402 are in a retraction state under the action of the outer clamping return spring, the four inner clamping blocks 403 are driven to retract through the air cylinder or the hydraulic cylinder, so that the four inner clamping blocks 403 are in a release state, the sealing ring to be pressed is conveyed into an annular placing groove 405 formed between the outer clamping block and the inner clamping block by the feeding arm, and then the four inner clamping blocks 403 are driven by the air cylinder or the hydraulic cylinder to extend out, so that the four inner clamping blocks 403 clamp the four inner side surfaces of the sealing ring from the inner side of the sealing ring.
(2) Preliminary positioning of sealing ring
The upper die holder 1 of the punch moves downwards, each insert 303 is inserted into each jack 406 on the lower die carrier 401, the outer clamping inclined plane 3030 at the bottom of the insert 303 props against the edge of the outer clamping block 402 of the lower die assembly 4 to move downwards, so that the four outer clamping blocks 402 are gradually closed until the protrusion 3031 of the insert 303 and the outer side wall of the outer clamping block 402 are closed, the four outer clamping blocks 402 are just spliced into the shape of the whole outer clamping element at the moment, the four outer clamping blocks 402 and the four outer side surfaces of the seal ring are respectively closed and closed, and the seal ring is extruded from the initial irregular shape into a regular shape through the four outer clamping blocks 402 and the four inner clamping blocks 403. Meanwhile, the outer clamping piece and the inner clamping piece can extrude the sealing ring to achieve primary positioning of the sealing ring on the lower die frame 401.
In this process, the convex portion 3031 of the slip 303 remains attached to the outer sidewall of the primary molded plate 307, so that the four primary molded plates 307 remain close together.
(3) One-step forming
The four primary forming plates 307 descend until primary forming inclined planes 3070 at the bottoms of the primary forming plates 307 are attached to the top of the sealing ring, and in the process that the primary forming plates 307 continue to descend, the primary forming inclined planes 3070 are completely attached to the outer side face of the top of the sealing ring, so that the top of the sealing ring is changed from a vertical state to a pre-bending state bent inwards by 45 degrees.
In this process, the outer clamp block 402 is always kept in a clamped state.
(4) Post forming
After the primary molding is completed, the upper mold frame 305 and the lower mold frame 401 are matched, the upper mold frame 305 keeps static, the upper mold base 1 and the mounting base 301 continue to descend, each insert 303 fixed on the mounting base 301 continues to move downwards, the protruding portion 3031 of the insert 303 gradually separates downwards from the outer side surface of the primary molding plate 307 until the recessed portion 3032 of the insert 303 is attached to the primary molding plate 307 on the upper mold frame 305 in a static state, the primary molding plate 307 transversely moves back into the recessed portion 3032 of the insert 303 under the action of a primary molding return spring, the four primary molding plates 307 are mutually far away, and a space for the downward movement of the secondary molding plate 308 is reserved. Meanwhile, in the process that the insert 303 continues to move downwards, the protruding portion 3031 of the insert 303 gradually separates from the outer side surface of the outer clamping block 402 downwards, until the recessed portion 3032 of the insert 303 is attached to the outer side surface of the outer clamping block 402, the outer clamping block 402 retracts under the action of the outer clamping return spring, the four outer clamping blocks 402 are away from each other, a space for forming the secondary forming plate 308 in a downward pressing mode is reserved, and the primary forming plate 307 and the outer clamping block 402 are prevented from influencing the downward pressing mode of the secondary forming plate 308.
And in the process that the upper die holder 1 continues to move downwards, the secondary forming plate 308 moves downwards along with the upper die holder, after the bottom of the secondary forming plate 308 contacts the top of the seal ring in the pre-bending state, the bent part of the top of the seal ring is gradually flattened by the secondary forming plate 308 until the nitrogen spring 302 is compressed to the limit position, and the top of the seal ring is pressed and formed in the pre-bending state of bending inwards by 45 degrees into the forming state of bending inwards by 90 degrees.
And finishing the pressing of the seal ring.
(5) Opening mould
After the sealing ring profiling is completed, the upper die holder 1 drives the upper die holder 305 to move upwards.
(6) Blanking of sealing ring
The four inner clamping blocks 403 are driven to retract by the air cylinder or the hydraulic cylinder, the clamping of the sealing ring is released by the four inner clamping blocks 403, and then the sealing ring after being molded is taken away by the blanking feeding arm.
Thus, the one-time stamping process of the die is completed.
The above is only a preferred embodiment of the present invention, and it should be noted that several modifications and improvements made by those skilled in the art without departing from the technical solution should also be considered as falling within the scope of the claims.
Claims (7)
1. A bending composite die structure of a stainless steel narrow-band welding part comprises an upper die assembly and a lower die assembly, and is characterized in that,
the upper die assembly comprises an upper die frame, a nitrogen spring, a primary forming part and an secondary forming part, wherein the nitrogen spring is connected between the upper die frame and an upper die base of a punch press, the primary forming part is arranged at the bottom of the upper die frame and is formed by splicing a plurality of primary forming plates, the bottom of the primary forming part is provided with a circumferential primary forming inclined plane, the secondary forming part is positioned at the inner side of the primary forming part, and the secondary forming part is arranged at the bottom of the upper die base of the punch press;
lower mould assembly includes die carrier, standing groove, outer clamping piece and interior clamping piece down, the die carrier is connected on the die holder of punch press down, the standing groove is used for placing stainless steel narrowband welding piece, interior clamping piece is located outer clamping piece is inboard, the standing groove by annular region between outer clamping piece and the interior clamping piece constitutes, outer clamping piece is formed by the outer tight piece concatenation of the outer clamp of a plurality of, interior clamping piece is formed by the concatenation of the interior clamping piece of a plurality of, the medial surface of outer clamping piece with the lateral surface shape looks adaptation of stainless steel narrowband welding piece, the lateral surface of interior clamping piece with the medial surface shape looks adaptation of stainless steel narrowband welding piece.
2. The bending composite die structure of a stainless steel narrow-band weldment according to claim 1, wherein the upper die base is fixed with an insert corresponding to each primary formed plate, the insert is located on the outer side of the primary formed plate, the outer side surface of the primary formed plate is elastically abutted against the inner side surface of the insert, and the inner side surface of the insert is provided with a convex portion and an inward concave portion.
3. The structure of a bending composite die for a stainless steel strip welded component as claimed in claim 2, wherein the bottom of the inner side of the insert has an outer clamping slope capable of elastically abutting against the outer edge of the outer clamping block.
4. The bending composite die structure of a stainless steel narrow strip welded piece as claimed in claim 1, wherein the slope of the primary forming part bottom is 30 ° to 60 °.
5. The composite die structure for bending a stainless steel strip weldment of claim 1 wherein said die structure includes at least two sets of said upper and lower die assemblies laterally disposed side-by-side.
6. The curved composite mold structure for a stainless steel strip weldment according to any one of claims 1 to 5, wherein the primary formed part is formed by splicing four primary formed plates, the outer clamping part is formed by splicing four outer clamping blocks, the inner clamping part is formed by splicing four inner clamping blocks, and the four primary formed plates, the four outer clamping blocks and the four inner clamping blocks are in one-to-one correspondence with four sides of the stainless steel strip weldment.
7. The bending composite die structure of a stainless steel narrow-band welded component as claimed in claim 6, wherein said secondary formed component is a ring-shaped component, said upper die base is further fixed with an auxiliary inner clamping column capable of being inserted downward between four inner clamping blocks on the inner side of the secondary formed component, the top of the inner clamping block is provided with an auxiliary inner clamping slope, and the auxiliary clamping is realized by the auxiliary inner clamping slope which is used for supporting the bottom of the inner clamping column to open the inner clamping block when the auxiliary inner clamping column moves downward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111296980.0A CN114054593A (en) | 2021-10-29 | 2021-10-29 | Bending composite die structure of stainless steel narrow-band welding part |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111296980.0A CN114054593A (en) | 2021-10-29 | 2021-10-29 | Bending composite die structure of stainless steel narrow-band welding part |
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| CN114054593A true CN114054593A (en) | 2022-02-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115446203A (en) * | 2022-08-16 | 2022-12-09 | 瑞鹄汽车模具股份有限公司 | Automobile die pressing and edge covering mechanism |
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2021
- 2021-10-29 CN CN202111296980.0A patent/CN114054593A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115446203A (en) * | 2022-08-16 | 2022-12-09 | 瑞鹄汽车模具股份有限公司 | Automobile die pressing and edge covering mechanism |
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