CN114273522A - Preformed drawing die structure - Google Patents
Preformed drawing die structure Download PDFInfo
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- CN114273522A CN114273522A CN202111532395.6A CN202111532395A CN114273522A CN 114273522 A CN114273522 A CN 114273522A CN 202111532395 A CN202111532395 A CN 202111532395A CN 114273522 A CN114273522 A CN 114273522A
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Abstract
The invention relates to the technical field of drawing dies for inner barrel rear covers of washing machines, in particular to a preformed drawing die structure which comprises a lower die holder and an upper die holder, wherein a lower drawing male die is welded at the axis of the outer wall of the top of the lower die holder, a lower material pressing plate is sleeved outside the lower drawing male die and slides along the lower drawing male die, and a post rod is arranged on one side of the outer wall of the bottom of the lower material pressing plate through bolts. In the invention, in the process of stamping the die, the lower material pressing plate is firstly pressed by the force transmitted to the pressure ejector rod by the oil press, the back end surface is pressed downwards to move upwards relative to the lower stretching male die so as to draw the flat plate blank upwards to draw the female die plate, and when the lower stretching male die and the preforming punch are closed in the drawing process, the preforming male die forms one-time preforming by using a plurality of nitrogen spring supporting forces, the die does not close and continues to move downwards, when the die is closed, the lower stretching male die continues to move upwards to close the preforming punch, and the die forms one-time product stamping, so that the smooth production of the product is completed.
Description
Technical Field
The invention relates to the technical field of a drawing die for a rear cover of an inner barrel of a washing machine, in particular to a preformed drawing die structure.
Background
The stamping die is a special process equipment for processing materials (metal or nonmetal) into parts (or semi-finished products) in cold stamping processing, and is called a cold stamping die (commonly called a cold stamping die). Stamping is a press working method in which a die mounted on a press is used to apply pressure to a material at room temperature to cause separation or plastic deformation of the material, thereby obtaining a desired part.
Chinese patent No. CN102921807A provides a novel drawing die structure, including last mould subassembly and lower mould subassembly, it includes mould body (1) and last mould pressure source (2) to go up the mould subassembly, the lower mould subassembly includes lower mould body (6) and lower mould pressure source (7), go up mould body (1) and lower mould body (6) looks adaptation, its characterized in that, it still includes blank holder (3) to go up the mould subassembly, the lower mould subassembly still includes blank holder (5) down, go up blank holder (3) with blank holder (5) looks adaptation down.
At present, when the cover adopts the drawing die to stretch and punch behind the washing machine inner tube, tensile fracture appears very easily in the shaping blank, has increased the defective rate of cover behind the washing machine inner tube, has reduced the machining efficiency of cover behind the washing machine inner tube, consequently need the urgent need to develop a drawing die structure of preforming.
Disclosure of Invention
The invention aims to provide a preformed drawing die structure to solve the problems that when a rear cover of an inner cylinder of a washing machine is drawn and stamped by a drawing die in the background technology, a formed blank is easy to stretch and crack, the reject ratio of the rear cover of the inner cylinder of the washing machine is increased, and the processing efficiency of the rear cover of the inner cylinder of the washing machine is reduced.
The technical scheme of the invention is as follows: the preformed drawing die structure comprises a lower die holder and an upper die holder, wherein a lower drawing male die is welded at the axis of the outer wall of the top of the lower die holder, a lower pressing plate is sleeved outside the lower drawing male die and slides along the lower drawing male die, a post rod is mounted on one side of the outer wall of the bottom of the lower pressing plate through a bolt, a positioning sleeve is mounted on one side of the inner wall of the top of the lower die holder through a bolt, the post rod is connected inside the positioning sleeve in a sliding manner, an oil press is mounted on the inner wall of the bottom of the lower die holder through a bolt, a pressure ejector rod is fixedly connected to the output end of the oil press through a coupler, the pressure ejector rod penetrates through the lower die holder, and the top end of the pressure ejector rod is attached to the bottom of the lower pressing plate.
Furthermore, an upper pressure plate is welded at the center of the outer wall of the bottom of the upper die base, and the upper pressure plate is attached to the lower pressure plate.
Furthermore, a punch groove is formed in the center of the outer wall of the bottom of the upper pressure plate, a nitrogen spring is mounted on the inner wall, close to the punch groove, of the bottom of the upper die holder through a bolt, a pre-forming punch matched with the inner portion of the punch groove is mounted at the output end of the nitrogen spring through a bolt, an upper drawing concave die plate is welded at the bottom of the pre-forming punch, and the upper drawing concave die plate is matched with a lower drawing convex die.
Furthermore, a guide rod is installed on one side of the outer wall of the top of the preforming punch through a bolt, a guide sleeve is installed on the outer wall, close to the bottom of the guide rod, of the upper die base through a bolt, and the guide rod is connected inside the guide sleeve in a sliding mode.
Furthermore, a first polished rod is welded on the outer wall of the top of the preformed punch far away from the other side of the guide rod, a first sleeve is welded on the outer wall of the bottom of the upper die base close to the first polished rod, and the first polished rod is connected inside the first sleeve in a sliding mode.
Furthermore, a second polished rod is welded on the outer wall of the top of the lower die base, which is far away from the other side of the positioning sleeve, a second sleeve is welded on the outer wall of the bottom of the lower pressing plate, which is close to the second polished rod, and the second polished rod is connected inside the second sleeve in a sliding manner.
The invention provides a preformed drawing die structure through improvement, and compared with the prior art, the invention has the following improvements and advantages:
(1) in the invention, in the process of stamping the die, the lower material pressing plate is firstly pressed by the force transmitted to the pressure ejector rod by the oil press, the back end surface is pressed downwards to move upwards relative to the lower stretching male die so as to draw the flat plate blank upwards to draw the female die plate, and when the lower stretching male die and the preforming punch are closed in the drawing process, the preforming male die forms one-time preforming by using a plurality of nitrogen spring supporting forces, the die is not closed and continues to move downwards, when the die is closed, the lower stretching male die continues to move upwards to close the preforming punch, and the die forms one-time product stamping to complete the smooth production of the product.
Drawings
The invention is further explained below with reference to the figures and examples:
FIG. 1 is an overall block diagram of the present invention;
fig. 2 is a partial structural view of the present invention.
In the figure: 1. a lower die holder; 2. a pressure ejector rod; 3. a drawing-down convex die; 4. pressing a material plate; 5. drawing the concave die plate upwards; 6. preforming a punch; 7. a nitrogen spring; 8. an upper die holder; 9. an oil press; 10. a post rod; 11. a positioning sleeve; 12. a guide bar; 13. a guide sleeve; 14. feeding a pressure plate; 15. punching a head groove; 16. a first polish rod; 17. a first sleeve; 18. a second polish rod; 19. a second sleeve.
Detailed Description
The present invention will be described in detail with reference to fig. 1-2, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 2, a preformed drawing die structure includes a lower die holder 1 and an upper die holder 8, a lower drawing punch 3 is welded at an axis of an outer wall of a top portion of the lower die holder 1, a lower pressing plate 4 is sleeved outside the lower drawing punch 3, the lower pressing plate 4 slides along the lower drawing punch 3, a post 10 is mounted on one side of an outer wall of a bottom portion of the lower pressing plate 4 through a bolt, a positioning sleeve 11 is mounted on one side of an inner wall of a top portion of the lower die holder 1 through a bolt, the post 10 is slidably connected inside the positioning sleeve 11, an oil press 9 is mounted on an inner wall of a bottom portion of the lower die holder 1 through a bolt, an output end of the oil press 9 is fixedly connected with a pressing ejector rod 2 through a coupler, the pressing ejector rod 2 penetrates through the lower die holder 1, a top end of the pressing ejector rod 2 is attached to a bottom portion of the lower pressing plate 4, the pressing plate 4 is pressed by a force transmitted from the oil press 9 to the pressing ejector rod 2 during a die stamping process, and the back table top is pressed downwards and moves upwards relative to the lower drawing convex die 3 to draw the flat blank upwards to draw the concave die plate 5, and when the lower drawing convex die 3 and the punch are closed in the drawing process, a product is formed into one-time preforming.
In this embodiment, the center of the outer wall of the bottom of the upper die base 8 is welded with the upper pressure plate 14, the upper pressure plate 14 and the lower pressure plate 4 are attached to each other, and the upper pressure plate 14 and the lower pressure plate 4 are matched with each other to enable the blank to be more stable during punch forming.
In the embodiment, a punch groove 15 is formed in the center of the outer wall of the bottom of the upper pressure plate 14, a nitrogen spring 7 is mounted on the inner wall, close to the punch groove 15, of the bottom of the upper die holder 8 through a bolt, a preforming punch 6 matched with the punch groove 15 is mounted at the output end of the nitrogen spring 7 through a bolt, an upper drawing die plate 5 is welded at the bottom of the preforming punch 6, the upper drawing die plate 5 is matched with the lower drawing punch 3, and the upper drawing die plate 5 is matched with the lower drawing punch 3, so that a blank can be formed better.
In this embodiment, a guide rod 12 is installed on one side of the outer wall of the top of the preforming punch 6 through a bolt, a guide sleeve 13 is installed on the outer wall of the upper die base 8 close to the bottom of the guide rod 12 through a bolt, the guide rod 12 is slidably connected inside the guide sleeve 13, the guide rod 12 slides along the guide sleeve 13, and the stability of the preforming punch 6 during vertical downward movement is well improved.
In this embodiment, the first polish rod 16 is welded on the outer wall of the top of the other side of the preforming punch 6 away from the guide rod 12, the first sleeve 17 is welded on the outer wall of the bottom of the upper die base 8 close to the first polish rod 16, the first polish rod 16 is slidably connected inside the first sleeve 17, when the preforming punch 6 moves downwards along the punch slot 15 under the action of the nitrogen spring 7, the first polish rod 16 slides along the first sleeve 17, and the stability of the preforming punch 6 when moving along the punch slot 15 is well improved.
In this embodiment, the second polish rod 18 is welded on the outer wall of the top of the other side of the lower die holder 1 away from the positioning sleeve 11, the second sleeve 19 is welded on the outer wall of the bottom of the lower die holder 4 close to the second polish rod 18, the second polish rod 18 is slidably connected inside the second sleeve 19, and when the lower die holder 4 moves upwards along the lower extension punch 3, the second sleeve 19 slides upwards along the second polish rod 18, so that the lower die holder 4 can more stably press and hold the blank.
The working principle is as follows: in the process of stamping the die, the lower material pressing plate 4 is pressed by the force transmitted to the pressure ejector rod 2 by the oil press 9, the back end surface is pressed downwards to move upwards relative to the lower stretching male die 3 so as to draw the flat plate blank upwards to draw the female die plate 5, when the lower stretching male die 3 and the preforming punch 6 are closed in the drawing process, the preforming male die uses the supporting force of a plurality of nitrogen springs 8 to form a product into one-time preforming, at the moment, the die does not close and continues to move downwards, when the die is closed, the lower stretching male die 3 continues to move upwards to close the preforming punch 6, at the moment, the die forms one-time product stamping, and the smooth production of the product is completed.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. A preformed drawing die structure comprises a lower die holder (1) and an upper die holder (8), and is characterized in that a lower stretching male die (3) is welded at the axis of the outer wall of the top of the lower die holder (1), a lower material pressing plate (4) is sleeved outside the lower stretching male die (3), the lower material pressing plate (4) slides along the lower stretching male die (3), a column rod (10) is installed on one side of the outer wall of the bottom of the lower material pressing plate (4) through bolts, a positioning sleeve (11) is installed on one side of the inner wall of the top of the lower die holder (1) through bolts, the column rod (10) is connected inside the positioning sleeve (11) in a sliding manner, an oil press (9) is installed on the inner wall of the bottom of the lower die holder (1) through bolts, a pressure ejector rod (2) is fixedly connected to the output end of the oil press (9) through a coupler, the pressure ejector rod (2) penetrates through the lower die holder (1), and the top end of the pressure ejector rod (2) is attached to the bottom of the lower pressure plate (4).
2. The preformed drawing die structure as claimed in claim 1, wherein an upper pressure plate (14) is welded at the center of the outer wall of the bottom of the upper die holder (8), and the upper pressure plate (14) is attached to the lower pressure plate (4).
3. The preformed drawing die structure according to claim 2, wherein a punch groove (15) is formed in the center of the outer wall of the bottom of the upper pressure plate (14), a nitrogen spring (7) is installed on the inner wall, close to the punch groove (15), of the bottom of the upper die holder (8) through a bolt, a preformed punch (6) matched with the inside of the punch groove (15) is installed at the output end of the nitrogen spring (7) through a bolt, an upper drawing concave die plate (5) is welded to the bottom of the preformed punch (6), and the upper drawing concave die plate (5) and the lower drawing convex die (3) are matched with each other.
4. A preformed drawing die structure according to claim 3, characterized in that one side of the outer wall of the top of the preformed punch (6) is provided with a guide rod (12) through a bolt, the outer wall of the upper die holder (8) close to the bottom of the guide rod (12) is provided with a guide sleeve (13) through a bolt, and the guide rod (12) is connected inside the guide sleeve (13) in a sliding way.
5. A preformed drawing die structure according to claim 3, characterized in that a first polished rod (16) is welded on the top outer wall of the other side of the preformed punch (6) far away from the guide rod (12), and a first sleeve (17) is welded on the bottom outer wall of the upper die holder (8) near the first polished rod (16), and the first polished rod (16) is slidably connected inside the first sleeve (17).
6. The preformed drawing die structure as claimed in claim 1, wherein a second polished rod (18) is welded on the outer wall of the top of the lower die holder (1) far away from the other side of the positioning sleeve (11), a second sleeve (19) is welded on the outer wall of the bottom of the lower material pressing plate (4) near the second polished rod (18), and the second polished rod (18) is slidably connected inside the second sleeve (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111532395.6A CN114273522A (en) | 2021-12-15 | 2021-12-15 | Preformed drawing die structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111532395.6A CN114273522A (en) | 2021-12-15 | 2021-12-15 | Preformed drawing die structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114273522A true CN114273522A (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111532395.6A Pending CN114273522A (en) | 2021-12-15 | 2021-12-15 | Preformed drawing die structure |
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| Country | Link |
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| CN (1) | CN114273522A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117772900A (en) * | 2024-01-23 | 2024-03-29 | 青岛瑞利杰金属有限公司 | Front plate stretching forming die and forming method of washing machine |
Citations (9)
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|---|---|---|---|---|
| CN201279549Y (en) * | 2008-10-06 | 2009-07-29 | 广州普什精密模具有限公司 | Double-float drawing die for back seat-pan stamping piece of vehicle seat |
| CN104084491A (en) * | 2014-07-22 | 2014-10-08 | 合肥金海康五金机械制造有限公司 | Bag pulling forming and flanging forming compound die |
| CN205519254U (en) * | 2016-04-11 | 2016-08-31 | 重庆长安汽车股份有限公司 | Take press device's drawing die in advance |
| CN105945150A (en) * | 2016-05-25 | 2016-09-21 | 奇瑞汽车股份有限公司 | Vehicle body side outer plate drawing mold and drawing method |
| CN205904249U (en) * | 2016-08-10 | 2017-01-25 | 苏州兆和通风设备制造有限公司 | Draw elbow that draws that trimming die possesses and use this mould production |
| CN210497948U (en) * | 2019-07-02 | 2020-05-12 | 广东科龙模具有限公司 | Mould with positive and negative tensile structure |
| CN111957800A (en) * | 2020-07-03 | 2020-11-20 | 中国第一汽车股份有限公司 | Die and method for controlling drawing formability of rear cover outer plate |
| CN112570556A (en) * | 2020-12-10 | 2021-03-30 | 凯龙高科技股份有限公司 | Sheet material stretching and punching die |
| CN216632288U (en) * | 2021-12-15 | 2022-05-31 | 滁州市艾德模具设备有限公司 | Preformed drawing die structure |
-
2021
- 2021-12-15 CN CN202111532395.6A patent/CN114273522A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201279549Y (en) * | 2008-10-06 | 2009-07-29 | 广州普什精密模具有限公司 | Double-float drawing die for back seat-pan stamping piece of vehicle seat |
| CN104084491A (en) * | 2014-07-22 | 2014-10-08 | 合肥金海康五金机械制造有限公司 | Bag pulling forming and flanging forming compound die |
| CN205519254U (en) * | 2016-04-11 | 2016-08-31 | 重庆长安汽车股份有限公司 | Take press device's drawing die in advance |
| CN105945150A (en) * | 2016-05-25 | 2016-09-21 | 奇瑞汽车股份有限公司 | Vehicle body side outer plate drawing mold and drawing method |
| CN205904249U (en) * | 2016-08-10 | 2017-01-25 | 苏州兆和通风设备制造有限公司 | Draw elbow that draws that trimming die possesses and use this mould production |
| CN210497948U (en) * | 2019-07-02 | 2020-05-12 | 广东科龙模具有限公司 | Mould with positive and negative tensile structure |
| CN111957800A (en) * | 2020-07-03 | 2020-11-20 | 中国第一汽车股份有限公司 | Die and method for controlling drawing formability of rear cover outer plate |
| CN112570556A (en) * | 2020-12-10 | 2021-03-30 | 凯龙高科技股份有限公司 | Sheet material stretching and punching die |
| CN216632288U (en) * | 2021-12-15 | 2022-05-31 | 滁州市艾德模具设备有限公司 | Preformed drawing die structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117772900A (en) * | 2024-01-23 | 2024-03-29 | 青岛瑞利杰金属有限公司 | Front plate stretching forming die and forming method of washing machine |
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