CN209792286U - Back pressure type cold extrusion device for annular thin-wall long-neck part - Google Patents
Back pressure type cold extrusion device for annular thin-wall long-neck part Download PDFInfo
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- CN209792286U CN209792286U CN201920391766.5U CN201920391766U CN209792286U CN 209792286 U CN209792286 U CN 209792286U CN 201920391766 U CN201920391766 U CN 201920391766U CN 209792286 U CN209792286 U CN 209792286U
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Abstract
The utility model belongs to the technical field of forging equipment, a cold extrusion device of back pressure formula of long neck part of annular thin wall is disclosed, include: the device comprises a lower die structure, a backpressure structure, an upper die structure, a workpiece groove and a top structure, wherein the backpressure structure is arranged at the upper end of the lower die structure; the upper die structure is arranged at the upper end of the backpressure structure; the workpiece groove extends from the upper end surface of the backpressure structure to the interior of the lower die structure; the top structure is arranged at the lower end of the lower die structure; the back pressure structure includes: the fixed plate is arranged between the lower die structure and the upper die structure, one end of the blank holder extends to the inside of the workpiece groove and is connected with the inner edge of the lower die structure, and the backing plate is arranged between the blank holder and the upper die structure. The utility model discloses can ensure that the blank is once cold extrusion, improve the quality of extruded article, still reduce blank forming pressure and mould internal stress simultaneously, improve the life of mould.
Description
Technical Field
The utility model belongs to the technical field of the forging apparatus, especially, relate to the cold extrusion device of back pressure formula of annular thin wall long neck part.
Background
The cold extrusion is a processing method of placing a metal blank in a cold extrusion die cavity, applying pressure to the blank through a male die fixed on a press machine, and enabling the metal blank to generate plastic deformation to obtain a part.
In the prior art, when a cold extrusion die is used for stretching and forming a metal blank, the flow speed of the metal blank in the die in the extrusion direction is low, the metal blank can be formed by applying pressure once or for multiple times, the internal stress of the die is large, and the forming pressure of an extrusion piece is large; meanwhile, the upper end of the extrusion piece is loose, and the flatness is not high.
therefore, there is a need to provide a new back pressure type cold extrusion device for annular thin-wall long-neck parts to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a back pressure type cold extrusion device for a small annular thin-wall long-neck part with one-step forming and extrusion forming pressure is provided.
The utility model provides a technical scheme that its technical problem adopted, a back pressure type cold extrusion device of long neck part of annular thin wall, include:
The structure of the lower die is that,
the back pressure structure is arranged at the upper end of the lower die structure;
The upper die structure is arranged at the upper end of the back pressure structure;
The workpiece groove extends from the upper end face of the backpressure structure to the interior of the lower die structure;
The top structure is arranged at the lower end of the lower die structure;
The back pressure structure includes: the fixed plate is arranged between the lower die structure and the upper die structure, one end of the blank holder extends to the inside of the workpiece groove and is connected with the inner edge of the lower die structure, and the backing plate is arranged between the blank holder and the upper die structure.
preferably, the upper mold structure includes: pressure head, top board, upper padding plate, punch holder board, elastic component, guide and lead screw, the one end of pressure head accept in work piece groove and cover are located the blank holder, the other end of pressure head with the top board is connected, the upper padding plate with the top board is kept away from the one end of fixed plate is connected, the punch holder board with the upper padding plate is kept away from the one end of top board is connected, the one end of elastic component with the one end of fixed plate is fixed to be linked to each other, the other end of elastic component to the direction of punch holder board extends, the guide by the punch holder board is kept away from the terminal surface of upper padding plate extends to the inside of lower die structure, the lead screw by the punch holder board is kept away from the terminal surface of upper padding plate extends to the lower die structure is close to the terminal surface of fixed plate.
preferably, the upper seat plate, the upper base plate and the upper pressure plate are fixedly connected with the screw rod respectively, and the screw rod is connected with the fixing plate in a sliding mode.
Preferably, the guide piece comprises a guide sleeve and a guide pillar, the guide pillar is sleeved in the guide sleeve, and the guide pillar is connected with the guide sleeve in a sliding manner.
preferably, the lower mold structure includes: the back pressure structure comprises a lower seat plate, a lower cushion plate and a lower pressing plate, wherein the lower pressing plate is arranged at one end, far away from the back pressure structure, of the pressing plate, the lower cushion plate is arranged at one end, far away from the back pressure structure, of the lower pressing plate, and the lower seat plate is arranged at one end, far away from the lower cushion plate, of the lower pressing plate.
preferably, the lower pressing plate comprises a first pressing plate and a second pressing plate, and the first pressing plate is inserted into the second pressing plate.
Preferably, an accommodating cavity penetrating through the lower cushion plate is arranged in the lower cushion plate; the roof structure includes: thimble, top plate, ejector pin board and ejector pin, the one end of thimble is located accept the intracavity and the other end with the work piece groove is kept away from the one end of top board is connected, the top plate is located accept the intracavity and with the thimble is kept away from the one end of first clamp plate is connected, the ejector pin board is located accept the intracavity and with the top plate is kept away from the one end of thimble is fixed continuous, the ejector pin is located the ejector pin board is kept away from the one end of top plate and is run through the bedplate down.
Preferably, the ejector pin with lower bedplate slides and links to each other, the top panel the ejector plate all with lower bedplate slides and links to each other, the thimble with first clamp plate slides and links to each other.
preferably, the diameter of one end, close to the lower backing plate, of the guide pillar is smaller than that of the other end of the guide pillar, the diameter of one end, close to the lower backing plate, of the guide sleeve is larger than that of the other end of the guide sleeve, and the diameter of one end, close to the upper backing plate, of the pressure head is larger than that of the other end of the pressure head.
Preferably, the diameter of one end of the ejector rod close to the ejector plate is larger than that of the other end of the ejector rod, and the diameter of one end of the ejector rod close to the workpiece groove is smaller than that of the other end of the ejector rod.
Compared with the prior art, the utility model has the advantages of it is following:
1. Compact structure and low manufacturing cost.
2. But one shot forming, the quality of extruded article is high, and cold extrusion device is equipped with the blank holder, and when the blank in the work piece groove was applyed pressure downwards to the pressure head, made the blank flow downwards and two direction express deliveries upwards, the blank holder will be applyed pressure for the blank this moment, prevents that the blank continues upwards to flow, impels the blank to continue fast flow downwards simultaneously, ensures that the blank can once cold extrusion take shape, and this cold extrusion in-process, the extruded article upper end after shaping is compact level and smooth.
3. The die has long service life, and the blank pressing ring is arranged, so that the blank forming pressure and the die internal stress can be reduced, and the service life of the die is prolonged.
4. The working efficiency is high, and the working efficiency is improved by 400 percent by adopting the combined extrusion of a die 5.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
In the figure:
1. the structure comprises a lower die structure, 11 parts of a lower base plate, 12 parts of a lower backing plate, 13 parts of a lower pressing plate, 131 parts of a first pressing plate, 132 parts of a second pressing plate, 2 parts of a back pressure structure, 21 parts of a fixing plate, 22 parts of a blank holder, 23 parts of a backing plate, 3 parts of an upper die structure, 31 parts of a pressing head, 32 parts of an upper pressing plate, 33 parts of an upper backing plate, 34 parts of an upper base plate, 35 parts of an elastic piece, 36 parts of a guide piece, 361 parts of a guide sleeve, 362 parts of a guide post, 37 parts of a screw rod, 4 parts of a workpiece groove, 5 parts of a top structure, 51 parts of a thimble, 52 parts of a.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the present embodiment includes: the device comprises a lower die structure 1, a backpressure structure 2, an upper die structure 3, a workpiece groove 4 and a top structure 5, wherein the backpressure structure 2 is arranged at the upper end of the lower die structure 1; the upper die structure 3 is arranged at the upper end of the backpressure structure 2; the workpiece groove 4 extends from the upper end face of the backpressure structure 2 to the interior of the lower die structure 1; the top structure 5 is arranged at the lower end of the lower die structure 1; the back pressure structure 2 includes: the fixing plate 21 is arranged between the lower die structure 1 and the upper die structure 3, one end of the blank holder 22 extends to the inside of the workpiece groove 4 and is connected with the inner edge of the lower die structure 1, and the backing plate 23 is arranged between the blank holder 22 and the upper die structure 3. The backing plate 23 is in threaded connection with the fixing plate 21
the upper die structure 3 includes: the pressing head 31, the upper pressing plate 32, the upper backing plate 33, the upper seat plate 34, the elastic piece 35, the guide piece 36 and the screw rod 37, wherein one end of the pressing head 31 is contained in the workpiece groove 4 and sleeved on the blank holder 22, the other end of the pressing head 31 is connected with the upper pressing plate 32, and the pressing head 31 and the upper pressing plate 32 are designed in a combined mode, so that the pressing head 31 is convenient to replace. The one end that fixed plate 21 was kept away from to upper padding plate 33 and top board 32 is connected, and the one end that top board 32 was kept away from to upper seat board 34 and top padding plate 33 is connected, and the one end of elastic component 35 is fixed even with the one end of fixed plate 21, and the other end of elastic component 35 extends to the direction of the upward seat board 34, and elastic component 35 is the spring. When the upper die structure 3 moves upwards, the fixing plate 21, the blank holder 22 and the backing plate 23 which are fixedly connected with the elastic piece 35 also move upwards, so that the blank is conveniently placed by a worker. When the upper die structure 3 is moved downwards, the holding plate 21 will be connected with the lower die structure 1 first, and when the ram 31 reaches the blank or when the blank starts to flow upwards, the holding plate 21 will exert a resistance force on the upwardly flowing blank, facilitating the blank forming and reducing the forming pressure. The guide 36 extends from the end surface of the upper seat plate 34 away from the upper cushion plate 33 to the inside of the lower mold structure 1, the guide 36 includes a guide sleeve 361 and a guide post 362, the guide sleeve 361 is sleeved with the guide post 362, and the guide post 362 is slidably connected with the guide sleeve 361. The alignment of the upper die structure 3 and the lower die structure 1 is facilitated. The screw 37 extends from the end face of the upper seat plate 34 remote from the upper backing plate 33 to the end face of the lower mould structure 1 near the fixed plate 21. The upper seat plate 34, the upper backing plate 33 and the upper pressure plate 32 are fixedly connected with a screw rod 37 respectively, and the screw rod 37 is connected with the fixed plate 21 in a sliding way. This structure facilitates the downward expansion of the elastic member 35 to separate the fixing plate 21, the backing plate 23, and the blank holder 22 from the upper press plate 32. The diameter of the end of the pressure head 31 close to the upper backing plate 33 is larger than that of the other end, so that the pressure head 31 is prevented from sliding downwards and falling off. The width of the upper seat plate 34 is larger than that of the upper backing plate 33, and the larger the area of the upper seat plate 34 is, the smaller the pressure born by the unit area is, which is beneficial to protecting the upper seat plate 34.
Be equipped with a plurality of work piece grooves 4 in the first clamp plate and extrude simultaneously, do benefit to and improve production efficiency. When the number of the workpiece grooves formed in the first pressing plate is five, the production efficiency can be improved by 400%.
The lower die structure 1 includes: the back pressure structure comprises a lower seat plate 11, a lower backing plate 12 and a lower pressing plate 13, wherein the lower pressing plate 13 is arranged at one end of the back pressure structure 2 far away from the pressing plate, the lower backing plate 12 is arranged at one end of the lower pressing plate 13 far away from the back pressure structure 2, and an accommodating cavity penetrating through the lower backing plate 12 is formed in the lower backing plate 12; the lower seat plate 11 is arranged at one end of the lower backing plate 12 far away from the lower pressure plate 13. The lower pressure plate 13 includes a first pressure plate 131 and a second pressure plate 132, and the first pressure plate 131 is inserted in the second pressure plate 132. The first pressing plate 131 and the second pressing plate 132 are in interference connection, and the combined design facilitates replacement of the first pressing plate 131. The second pressing plate 132 is in threaded connection with the lower backing plate 12, and the lower backing plate 12 is in threaded connection with the lower base plate 11. The width of the lower seat plate 11 is greater than that of the lower backing plate 12, which is beneficial to protecting the lower backing plate 12 and improving the stability of the lower die structure 1.
The roof structure 5 includes: the ejector pin 51, the top plate 52, the ejector plate 53 and the ejector rod 54, one end of the ejector pin 51 is arranged in the accommodating cavity, the other end of the ejector pin 51 is connected with one end of the workpiece groove 4 far away from the upper press plate 32, and the combined design of the ejector pin 51 and the top plate 52 is convenient for replacing the ejector pin 51. The top plate 52 is disposed in the accommodating cavity and connected to an end of the thimble 51 far away from the first pressing plate 131, the top plate 53 is disposed in the accommodating cavity and fixedly connected to an end of the top plate 52 far away from the thimble 51, and the push rod 54 is disposed at an end of the top plate 53 far away from the top plate 52 and penetrates through the lower plate 11. The ejector rod 54 is connected with the lower seat plate 11 in a sliding manner, the top panel 52 and the ejector seat plate 53 are connected with the lower cushion plate 12 in a sliding manner, and the ejector pin 51 is connected with the first pressing plate 131 in a sliding manner. The diameter of the end of the ejector pin 54 near the ejector seat plate 53 is larger than that of the other end, and this design prevents the ejector pin 54 from sliding out of the lower seat plate 11. The diameter of one end of the thimble 51 close to the workpiece groove 4 is smaller than that of the other end, so that the thimble 51 is convenient to fix and replace. The top panel 52 is connected with the top seat plate 53 through screw threads.
the guide 36 penetrates the second presser plate 132, and the diameter of the guide post 362 at one end close to the lower shim plate 12 is smaller than that at the other end, so that the guide post 362 is prevented from sliding out downward when the upper die structure 3 moves upward. The diameter of one end of the guide 361 near the lower backing plate 12 is larger than that of the other end, preventing the guide 361 from sliding upward along the second pressing plate 132.
the utility model provides a back pressure type cold extrusion device of annular thin wall long neck part's working process does: the upper die structure 3 moves upwards and the ram 31 slides upwards away from the workpiece slot 4, whilst the holding plate 21, the blankholder 22 and the shim plate 23 move upwards and the blankholder 22 slides upwards away from the workpiece slot 4. The blank is placed into the workpiece groove 4, the press starts to work, the pressure head 31 applies pressure to the blank downwards, the blank flows downwards and upwards quickly, the internal stress of the die and the forming pressure of the blank are reduced, and the service life of the die is prolonged. The blank holder 22 fixed in the workpiece groove 4 applies resistance to the blank which flows rapidly upwards, so that the blank is promoted to continuously flow rapidly downwards, and the blank is ensured to be formed in the die at one time. After the blank is extruded and formed, the upper end of the extruded part after cold extrusion is compact and flat due to the downward pressure of the blank holder 22. The quality of the extrusion is improved. Go up the mode structure 3 and upwards remove, pressure head 31 and blank holder 22 slide and leave work piece groove 4, ejector pin 54 rebound drives thimble 51 on the top surface and upwards moves, and the extruded piece upwards slides along work piece groove 4, makes things convenient for the staff to take out the extruded piece and carry out the cold extrusion of next time.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a cold extrusion device of back pressure formula of long neck part of annular thin wall which characterized in that includes:
The structure of the lower die is that,
The back pressure structure is arranged at the upper end of the lower die structure;
The upper die structure is arranged at the upper end of the back pressure structure;
the workpiece groove extends from the upper end face of the backpressure structure to the interior of the lower die structure;
The top structure is arranged at the lower end of the lower die structure;
The back pressure structure includes: the fixed plate is arranged between the lower die structure and the upper die structure, one end of the blank holder extends to the inside of the workpiece groove and is connected with the inner edge of the lower die structure, and the backing plate is arranged between the blank holder and the upper die structure.
2. The back pressure cold extrusion press of annular thin-walled long-neck parts of claim 1, wherein said upper die structure comprises: the pressing head comprises a pressing head, an upper pressing plate, an upper base plate, an elastic piece, a guide piece and a screw rod, wherein one end of the pressing head is accommodated in the workpiece groove and sleeved on the blank holder, and the other end of the pressing head is connected with the upper pressing plate; the upper padding plate with the upper pressing plate is kept away from the one end of fixed plate is connected, the upper seat board with the upper padding plate is kept away from the one end of upper pressing plate is connected, the one end of elastic component with the one end of fixed plate is fixed continuous, the other end of elastic component to the direction of upper seat board extends, the guide by the upper seat board is kept away from the terminal surface of upper padding plate extends to the inside of lower die structure, the lead screw by the upper seat board is kept away from the terminal surface of upper padding plate extends to lower die structure is close to the terminal surface of fixed plate.
3. the cold extrusion press of annular thin-walled long-neck part of claim 2, wherein the upper seat plate, the upper backing plate and the upper pressure plate are respectively connected with the lead screw, and the lead screw is connected with the fixing plate in a sliding way.
4. The back pressure type cold extrusion device for annular thin-wall long-neck parts as claimed in claim 3, wherein the guiding member comprises a guiding sleeve and a guiding pillar, the guiding pillar is sleeved in the guiding sleeve, and the guiding pillar is connected with the guiding sleeve in a sliding manner.
5. The back pressure cold extrusion press of annular thin-walled long-neck parts of claim 4, wherein said lower die structure comprises: the back pressure structure comprises a lower seat plate, a lower cushion plate and a lower pressing plate, wherein the lower pressing plate is arranged at one end, far away from the back pressure structure, of the pressing plate, the lower cushion plate is arranged at one end, far away from the back pressure structure, of the lower pressing plate, and the lower seat plate is arranged at one end, far away from the lower cushion plate, of the lower pressing plate.
6. The cold back-pressure extrusion device for annular thin-walled long-neck parts according to claim 5, wherein the lower platen comprises a first platen and a second platen, the first platen being inserted in the second platen.
7. The back pressure type cold extrusion device for the annular thin-wall long-neck part as claimed in claim 6, wherein an accommodating cavity penetrating through the lower backing plate is arranged in the lower backing plate; the roof structure includes: thimble, top plate, ejector pin board and ejector pin, the one end of thimble is located accept the intracavity and the other end with the work piece groove is kept away from the one end of top board is connected, the top plate is located accept the intracavity and with the thimble is kept away from the one end of first clamp plate is connected, the ejector pin board is located accept the intracavity and with the top plate is kept away from the one end of thimble is fixed continuous, the ejector pin is located the ejector pin board is kept away from the one end of top plate and is run through the bedplate down.
8. The cold extrusion press of claim 7, wherein said ejector rod is slidably connected to said lower base plate, said top plate and said top base plate are slidably connected to said lower base plate, and said ejector pin is slidably connected to said first pressing plate.
9. The back pressure type cold extrusion device for the annular thin-wall long-neck part of claim 8, wherein the diameter of one end of the guide post close to the lower backing plate is smaller than that of the other end, the diameter of one end of the guide sleeve close to the lower backing plate is larger than that of the other end, and the diameter of one end of the pressure head close to the upper backing plate is larger than that of the other end.
10. the back pressure type cold extrusion device for the annular thin-wall long-neck part as claimed in claim 9, wherein the diameter of the ejector pin at one end close to the ejector plate is larger than that at the other end, and the diameter of the ejector pin at one end close to the workpiece groove is smaller than that at the other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920391766.5U CN209792286U (en) | 2019-03-26 | 2019-03-26 | Back pressure type cold extrusion device for annular thin-wall long-neck part |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920391766.5U CN209792286U (en) | 2019-03-26 | 2019-03-26 | Back pressure type cold extrusion device for annular thin-wall long-neck part |
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| CN209792286U true CN209792286U (en) | 2019-12-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109821919A (en) * | 2019-03-26 | 2019-05-31 | 湖南省机械科学研究院有限公司 | A kind of back pressure type cold extrusion device of annular thin wall long-neck part |
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2019
- 2019-03-26 CN CN201920391766.5U patent/CN209792286U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109821919A (en) * | 2019-03-26 | 2019-05-31 | 湖南省机械科学研究院有限公司 | A kind of back pressure type cold extrusion device of annular thin wall long-neck part |
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