CN109822032B - Unidirectional pressurized multidirectional hot die forging die structure - Google Patents
Unidirectional pressurized multidirectional hot die forging die structure Download PDFInfo
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- CN109822032B CN109822032B CN201910262876.6A CN201910262876A CN109822032B CN 109822032 B CN109822032 B CN 109822032B CN 201910262876 A CN201910262876 A CN 201910262876A CN 109822032 B CN109822032 B CN 109822032B
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Abstract
The prior multi-directional hot die forging technology can pressurize from multiple directions to form a multi-directional hole core, but the multi-directional pressurization tends to lead to complex die forging equipment and high price. In order to solve the problems, the invention provides a unidirectional pressurized multidirectional hot die forging die structure, which adopts a common punch press to pressurize from one direction so as to form a multidirectional hole core, thereby greatly reducing the cost of multidirectional hot die forging equipment. The implementation principle is that the traditional upper and lower die mode is changed into a left and right die mode, and the dies are opened and closed not up and down but left and right. For this purpose, the left and right mold cores for fixing the left and right molds are designed, the shape of the left and right mold cores is a cone with small bottom surface and large top surface, and the cone is split left and right symmetrically to form the left and right mold cores; the left mold core and the right mold core move along the guide rails at the same time, so that the left mold core and the right mold core are opened and closed. The front and rear sliding blocks for installing the side punches are designed in the front and rear directions perpendicular to the left and right directions and driven by the left and right mold cores to move along respective guide rails, and then the front and rear sliding blocks extend and retract to finish core pulling of the side punches. Therefore, only a push rod which moves up and down is designed, the bottom surfaces of the left and right mold cores are removed, and the actions of opening the left and right molds, pulling cores by the side punches and the like can be completed; when the force applied on the ejector rod is removed, all parts fall freely under the action of gravity, and reset is completed. The lower pull rod for installing the lower punch is also designed to be sleeved in the ejector rod, so that core pulling of the lower punch is completed.
Description
Technical Field
The invention belongs to the technical field of mechanical design and manufacture and automation thereof.
Background
The prior multi-directional hot die forging technology can pressurize from multiple directions to form a multi-directional hole core, but the multi-directional pressurization tends to lead to complex die forging equipment and high price.
Disclosure of Invention
In order to solve the problems, the invention provides a unidirectional pressurized multidirectional hot die forging die structure, which adopts a common punch press to pressurize from one direction so as to form a multidirectional hole core, thereby greatly reducing the cost of multidirectional hot die forging equipment. The implementation principle is that the traditional upper and lower die mode is changed into a left and right die mode, and the dies are opened and closed not up and down but left and right. For this purpose, the left and right mold cores for fixing the left and right molds are designed, the shape of the left and right mold cores is a cone with small bottom surface and large top surface, and the cone is split left and right symmetrically to form the left and right mold cores; the left mold core and the right mold core move along the guide rails at the same time, so that the left mold core and the right mold core are opened and closed. The front and rear sliding blocks for installing the side punches are designed in the front and rear directions perpendicular to the left and right directions and driven by the left and right mold cores to move along respective guide rails, and then the front and rear sliding blocks extend and retract to finish core pulling of the side punches. Therefore, only a push rod which moves up and down is designed, the bottom surfaces of the left and right mold cores are removed, and the actions of opening the left and right molds, pulling cores by the side punches and the like can be completed; when the force applied on the ejector rod is removed, all parts fall freely under the action of gravity, and reset is completed. The lower pull rod for installing the lower punch is also designed to be sleeved in the ejector rod, so that core pulling of the lower punch is completed.
Specifically, the multidirectional hot die forging die structure with unidirectional pressurization comprises a die cylinder, a left die core, a right die core, a left pressing plate, a right pressing plate, a front sliding block, a rear sliding block, a bottom, a push rod and a lower punch demoulding mechanism. The inner hole of the die cylinder, the left die core and the right die core have consistent taper, and the bottom surface and the top surface have the same size; the inner hole wall of the die cylinder is provided with 4 guide rails which are uniformly distributed at the leftmost element wire, the rightmost element wire, the foremost element wire and the rearmost element wire respectively, are symmetrical left and right and are symmetrical front and back and are matched with the guide rails on the left die core, the right die core, the front sliding block and the rear sliding block; the guide rail of the left mold core is positioned at the leftmost line, the guide rail of the right mold core is positioned at the rightmost line, and all the guide rails comprise the left mold core, the right mold core, the front sliding block and the guide rail on the rear sliding block, and the guide rails present consistent taper and are consistent with the taper of the inner hole of the mold cylinder. The bottom is fixed at the bottom of the mold cylinder, the center of the mold cylinder is provided with a through hole for sleeving the ejector rod, so that the direction of the ejector rod is vertical to the bottom surfaces of the left mold core and the right mold core when the ejector rod moves up and down, and the center of the ejector rod is provided with the through hole. The lower punch demoulding mechanism consists of a pull-down member and a demoulding disc sleeve assembly, wherein the pull-down member comprises a pull-down rod, a pull-down cover plate and a pull-down stop key, the pull-down member is sleeved in a through hole in the center of the ejector rod, and a lower punch is arranged on the pull-down member; the demolding disc sleeve assembly comprises a lower demolding disc, an upper demolding disc and a demolding sleeve, wherein each assembly is provided with a central through hole and is sleeved on the lower punch.
The middle parts of the left mold core and the right mold core are provided with stepped holes, and the uppermost step is provided with a threaded hole for locking the left pressing plate and the right pressing plate so as to tightly press the left mold and the right mold which are arranged on the steps below; then, a demoulding disc sleeve component is placed on the lower step, the placing sequence of the components is that a lower demoulding disc is placed on the step, a demoulding sleeve is placed on the lower demoulding disc, an upper demoulding disc is buckled and pressed on the demoulding sleeve, and the upper demoulding disc is blocked by the bottoms of a left mould and a right mould which are placed on the step above; the lower-most step is placed at the upper end of the pull-down member, and has a taper consistent with the taper of the lower surface of the upper end of the pull-down member. The front slider and the rear slider are respectively provided with a front punch and a rear punch.
The stamping process is that a blank is put in, and an upper punch is started to undershoot; the demolding process is that the upper punch is pulled out first to finish core pulling and demolding; then the ejector rod moves upwards under the action of force, and after contacting the bottom surfaces of the left mold core and the right mold core, the left mold core and the right mold core are driven to move obliquely upwards along the direction of the guide rail, and at the moment, the left mold core and the right mold core are opened in parallel, so that the outer part of the die forging piece is separated from the left mold and the right mold; when the left mold core and the right mold core move in the oblique upper direction, the front sliding block and the rear sliding block are driven to move in the oblique upper direction, and at the moment, the front sliding block and the rear sliding block are opened and contracted to drive the front punch and the rear punch to finish core pulling and demolding; the lower punch is not demoulded yet, the central position of the die forging is kept still all the time, and the die forging is ensured to be separated from the left die, the right die, the front punch and the rear punch to finish core pulling and demoulding; when the ejector rod moves up to a certain position, the pull-down stop key is contacted to the bottom of the bottom, so that the pull-down member stops moving upwards along with the left die core and the right die core, at the moment, the step below the upper end part of the pull-down member is completely opened, the left die core and the right die core are not prevented from continuing to move obliquely upwards, and when the left die core and the right die core continue to move obliquely upwards, the demolding disc sleeve component continues to move upwards along with the left die core and the right die core, the demolding sleeve ejects a die forging from the lower punch, and core pulling and demolding of the lower punch are completed; the reset process is that when the die forging is taken out, the force applied to the ejector rod is removed, the left die core and the right die core slide downwards obliquely under the action of gravity to drive the front sliding block and the rear sliding block to slide downwards obliquely, and finally slide to the initial position to finish the die assembly of the left die and the right die.
The beneficial effects of the invention are as follows: the invention provides a unidirectional pressurized multidirectional hot die forging die structure, which adopts a common punch press and an upper punch, so that a hole core can be formed in four directions up and down and front and back.
Drawings
Fig. 1 is an assembly view of the die structure in its initial position.
Fig. 2 is an assembly drawing of the die structure demolded to a bottom position where the pull down stop key contacts bottom.
Fig. 3 is an assembly view of the die structure in the fully released position.
Fig. 4 is a mold cylinder part diagram.
Fig. 5 is a left core part view.
Fig. 6 is a left platen part view.
Fig. 7 is a front slider part view.
Fig. 8 is an assembly view of the pull-down member.
Fig. 9 is an assembly view of a stripper sleeve assembly.
Fig. 10 is a top bar part view.
Fig. 11 is a bottom part view.
The labels in each figure are as follows: 1. left mould, 2, right mould, 3, left mould core, 4, right mould core, 5, left clamp plate, 6, right clamp plate, 7, front slider, 8, back slider, 9, front side punch, 10, back side punch, 11, lower pull rod, 12, lower punch, 13, pull-down cover plate, 14, pull-down stop key, 15, ejector pin, 16, lower stripper plate, 17, upper stripper plate, 18, stripper sleeve, 19 bottom, 20 mould cylinders.
Detailed Description
The stamping process, the demolding process and the resetting process of the unidirectional pressurized multidirectional hot die forging die structure are described in detail below with reference to the accompanying drawings.
Referring to fig. 1, the stamping process is to put a blank into the die and start an upper punch to undershoot; the demolding process is that the upper punch is pulled out first to finish core pulling and demolding; then the ejector rod 15 moves upwards under the action of force, and after contacting the bottom surfaces of the left mold core 3 and the right mold core 4, the left mold core 3 and the right mold core 4 are driven to move obliquely upwards along the direction of the guide rail, and at the moment, the left mold core 3 and the right mold core 4 are opened in parallel, so that the outer parts of the die forgings are separated from the left mold 1 and the right mold 2; when the left mold core 3 and the right mold core 4 move in the oblique upward direction, the front slide block 7 and the rear slide block 8 are driven to move in the oblique upward direction, and at the moment, the front slide block 7 and the rear slide block 8 are opened and contracted to drive the front side punch 9 and the rear side punch 10 to finish core pulling and demolding; referring to fig. 8, the pull-down member moves upwards along with the left mold core 3 and the right mold core 4, and is vertically moved up and down because the pull-down member is sleeved in the through hole in the center of the ejector rod 15, and in the process that the outside of the die forging piece is separated from the left mold 1, the right mold 2, the front side punch 9 and the rear side punch 10 to finish core pulling and demolding, the lower punch 12 does not perform demolding yet, and the center position of the die forging piece is kept still all the time, so that the outside of the die forging piece is separated from the left mold 1, the right mold 2, the front side punch 9 and the rear side punch 10 to finish core pulling and demolding; referring to fig. 2, when the ejector rod 15 moves up to a certain position, the pull-down stop key 14 touches the bottom of the bottom 19, so that the pull-down member stops moving upwards along with the left mold core 3 and the right mold core 4, and at this time, the steps below the upper end of the pull-down member are also completely opened, and the left mold core 3 and the right mold core 4 are not prevented from continuing to move obliquely upwards; referring to fig. 3, after the left mold core 3 and the right mold core 4 continue to move in the oblique upward direction, referring to fig. 9, the demolding disc sleeve assembly continues to move upward along with the left mold core and the right mold core, and the demolding sleeve 18 ejects the die forging from the lower punch 12 to finish core pulling and demolding of the lower punch 12; the reset process is that after taking out the die forging, the force applied to the ejector rod 15 is removed, the left die core 3 and the right die core 4 slide downwards obliquely under the action of gravity to drive the front sliding block 7 and the rear sliding block 8 to slide downwards obliquely, and finally slide to the initial position to finish the die assembly of the left die 1 and the right die 2, and as the step for placing the upper end part of the pull-down member and the lower part of the upper end part of the pull-down rod 11 are tapered, the upper end part of the pull-down member is extruded onto the step for initial placement, thereby completing the reset.
Claims (1)
1. A multidirectional hot die forging die structure of one-way pressurization, characterized by: the device consists of a die cylinder, a left die core, a right die core, a left pressing plate, a right pressing plate, a front sliding block, a rear sliding block, a bottom, a push rod and a lower punch demoulding mechanism; the inner hole of the die cylinder, the left die core and the right die core have consistent taper, and the bottom surface and the top surface have the same size; the inner hole wall of the die cylinder is provided with 4 guide rails which are uniformly distributed at the leftmost element wire, the rightmost element wire, the foremost element wire and the rearmost element wire respectively, are symmetrical left and right and are symmetrical front and back and are matched with the guide rails on the left die core, the right die core, the front sliding block and the rear sliding block; the guide rail of the left mold core is positioned at the leftmost line, the guide rail of the right mold core is positioned at the rightmost line, and all the guide rails comprise the left mold core, the right mold core, the front sliding block and the guide rail on the rear sliding block, and the guide rails present consistent taper and are consistent with the taper of the inner hole of the mold cylinder; the bottom is fixed at the bottom of the mold cylinder, a through hole is arranged in the center of the mold cylinder for sleeving the ejector rod, so that the direction of the ejector rod is vertical to the bottom surfaces of the left mold core and the right mold core when the ejector rod moves up and down, and the center of the ejector rod is provided with the through hole; the lower punch demoulding mechanism consists of a pull-down member and a demoulding disc sleeve assembly, wherein the pull-down member comprises a pull-down rod, a pull-down cover plate and a pull-down stop key, the pull-down member is sleeved in a through hole in the center of the ejector rod, and a lower punch is arranged on the pull-down member; the demolding disc sleeve assembly comprises a lower demolding disc, an upper demolding disc and a demolding sleeve, wherein each assembly is provided with a central through hole and is sleeved on the lower punch; the middle parts of the left mold core and the right mold core are provided with stepped holes, and the uppermost step is provided with a threaded hole for locking the left pressing plate and the right pressing plate so as to tightly press the left mold and the right mold which are arranged on the steps below; the lower step is provided with a demoulding disc sleeve assembly, the arranging sequence of the assemblies is that a lower demoulding disc is arranged on the step, a demoulding sleeve is arranged on the lower demoulding disc, an upper demoulding disc is buckled and pressed on the demoulding sleeve, and the upper demoulding disc is blocked by the bottoms of a left mould and a right mould which are arranged on the step; the lower step is used for placing the upper end part of the pull-down member, and the step has taper consistent with the taper below the upper end part of the pull-down rod; the front sliding block and the rear sliding block are respectively provided with a front side punch and a rear side punch; the stamping process is that a blank is put in, and an upper punch is started to undershoot; the demolding process is that the upper punch is pulled out first to finish core pulling and demolding; then the ejector rod moves upwards under the action of force, and after contacting the bottom surfaces of the left mold core and the right mold core, the left mold core and the right mold core are driven to move obliquely upwards along the direction of the guide rail, and at the moment, the left mold core and the right mold core are opened in parallel, so that the outer part of the die forging piece is separated from the left mold and the right mold; when the left mold core and the right mold core move in the oblique upper direction, the front sliding block and the rear sliding block are driven to move in the oblique upper direction, and at the moment, the front sliding block and the rear sliding block are opened and contracted to drive the front punch and the rear punch to finish core pulling and demolding; the lower punch is not demoulded yet, the central position of the die forging is kept still all the time, and the die forging is ensured to be separated from the left die, the right die, the front punch and the rear punch to finish core pulling and demoulding; when the ejector rod moves up to a certain position, the pull-down stop key is contacted to the bottom of the bottom, so that the pull-down member stops moving upwards along with the left mold core and the right mold core, and at the moment, the step below the upper end part of the pull-down member is completely opened, and the left mold core and the right mold core are not prevented from continuing to move obliquely upwards; when the left mold core and the right mold core continue to move obliquely upwards, the demolding disc sleeve assembly continues to move upwards along with the left mold core and the right mold core, and the demolding sleeve ejects the die forging out of the lower punch to finish core pulling and demolding of the lower punch; the reset process is that when the die forging is taken out, the force applied to the ejector rod is removed, the left die core and the right die core slide downwards obliquely under the action of gravity to drive the front sliding block and the rear sliding block to slide downwards obliquely, and finally slide to the initial position to finish the die assembly of the left die and the right die.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910262876.6A CN109822032B (en) | 2019-04-02 | 2019-04-02 | Unidirectional pressurized multidirectional hot die forging die structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910262876.6A CN109822032B (en) | 2019-04-02 | 2019-04-02 | Unidirectional pressurized multidirectional hot die forging die structure |
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| CN109822032A CN109822032A (en) | 2019-05-31 |
| CN109822032B true CN109822032B (en) | 2023-09-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111036816A (en) * | 2019-10-10 | 2020-04-21 | 马翔 | Horizontal one-way pressurized multidirectional hot die forging die structure |
| CN114951534A (en) * | 2021-12-28 | 2022-08-30 | 无锡透平叶片有限公司 | Split double-pier-head blank making die applied to screw press |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998047646A1 (en) * | 1997-04-22 | 1998-10-29 | Komatsu Industries Corporation | Forging die and upset forging method |
| TWM378053U (en) * | 2009-09-02 | 2010-04-11 | Yi Cai Entpr Co Ltd | Forging dies for multi-directional tube shaping |
| CN102806293A (en) * | 2012-08-28 | 2012-12-05 | 刘世雄 | Multidirectional die-forging press machine |
| CN109500339A (en) * | 2018-11-27 | 2019-03-22 | 唐山钢铁集团有限责任公司 | Mould structure for valve body manufacture |
-
2019
- 2019-04-02 CN CN201910262876.6A patent/CN109822032B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998047646A1 (en) * | 1997-04-22 | 1998-10-29 | Komatsu Industries Corporation | Forging die and upset forging method |
| TWM378053U (en) * | 2009-09-02 | 2010-04-11 | Yi Cai Entpr Co Ltd | Forging dies for multi-directional tube shaping |
| CN102806293A (en) * | 2012-08-28 | 2012-12-05 | 刘世雄 | Multidirectional die-forging press machine |
| CN109500339A (en) * | 2018-11-27 | 2019-03-22 | 唐山钢铁集团有限责任公司 | Mould structure for valve body manufacture |
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| CN109822032A (en) | 2019-05-31 |
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Effective date of registration: 20200724 Address after: 317600 Salmonella Town, Yuhuan City, Taizhou City, Zhejiang Province Applicant after: Yuhuan teke automation equipment Co.,Ltd. Address before: 317600 Talent Apartment 2706, 185 Shuanggang Road, Yucheng Street, Yuhuan City, Taizhou City, Zhejiang Province Applicant before: Ma Xiang |
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