CN216632288U

CN216632288U - Preformed drawing die structure

Info

Publication number: CN216632288U
Application number: CN202123147357.7U
Authority: CN
Inventors: 江涵; 王守高; 朱卫华
Original assignee: Chuzhou Aide Moulding Equipment Co ltd
Current assignee: Chuzhou Aide Moulding Equipment Co ltd
Priority date: 2021-12-15
Filing date: 2021-12-15
Publication date: 2022-05-31
Anticipated expiration: 2031-12-15

Abstract

The utility model provides a preformed drawing die structure with a novel structural design, 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 a bolt. In the utility model, 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 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

Preformed drawing die structure

Technical Field

The utility model 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, and is called as a cold stamping die (commonly called as 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.

At present, when the rear cover of the inner barrel of the washing machine is stretched and stamped by adopting a stretching die, the formed blank is easy to stretch and crack, the reject ratio of the rear cover of the inner barrel of the washing machine is increased, and the processing efficiency of the rear cover of the inner barrel of the washing machine is reduced. Therefore, it is desirable to design a preformed drawing die structure to solve the above problems.

Disclosure of Invention

The utility model aims to solve the defects that when a rear cover of an inner cylinder of a washing machine is stretched and stamped by a stretching die in the prior art, 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.

In order to achieve the purpose, the utility model adopts the following technical scheme:

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 and the lower pressure plate are attached to each other.

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 slidably connected inside the second sleeve.

The utility model has the beneficial effects that:

1. in the utility model, 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 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

FIG. 1 is a schematic view of the overall structure of a preformed drawing die structure according to the present invention;

fig. 2 is a partial structural schematic diagram of a preformed drawing die structure according to 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 technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

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 drawing 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 base 8 through bolts, a pre-forming punch 6 matched with the inside of the punch groove 15 is mounted at the output end of the nitrogen spring 7 through bolts, an upper drawing die plate 5 is welded at the bottom of the pre-forming punch 6, the upper drawing die plate 5 is matched with a lower drawing male die 3, and the upper drawing die plate 5 is matched with the lower drawing male die 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 to draw the flat blank upwards to draw the concave 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 closes, 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 above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the utility model concepts of the present invention in the scope of the present invention.

Claims

1. A preformed drawing die structure comprises a lower die holder (1) and an upper die holder (8), and is characterized in that a down-drawing extending 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 down-drawing extending male die (3), the lower material pressing plate (4) slides along the down-drawing extending 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) on the other side far away from the positioning sleeve (11), a second sleeve (19) is welded on the outer wall of the bottom of the lower material pressing plate (4) close to the second polished rod (18), and the second polished rod (18) is connected inside the second sleeve (19) in a sliding manner.