CN217451813U

CN217451813U - Can reduce sending out lid inner panel drawing die of drawing depth

Info

Publication number: CN217451813U
Application number: CN202221632284.2U
Authority: CN
Inventors: 郁波; 杨丹; 石立成; 代小龙
Original assignee: Sichuan Chengfei Integration Technology Co ltd
Current assignee: Sichuan Chengfei Integration Technology Co ltd
Priority date: 2022-06-27
Filing date: 2022-06-27
Publication date: 2022-09-20
Anticipated expiration: 2032-06-27

Abstract

The utility model discloses a can reduce sending out lid inner panel drawing die of drawing depth relates to car stamping die field, and mainly used when solving current drawing die preparation sending out lid inner panel, is located the lower problem of material utilization ratio of the sheet material of sending out lid inner panel front windshield side. The main structure is as follows: the lower surface of the upper die base is provided with a floating female die capable of being compressed upwards, the lower surface of the upper die base is also provided with a fixed female die, the horizontal height of the molded surface of the floating female die in a free state is lower than that of the molded surface of the fixed female die, and the lowest point of the floating female die and the lowest point of the fixed female die are at the same horizontal height. The utility model provides a pair of can reduce sending out lid inner panel drawing die of draw depth, this drawing die is through setting up unsteady die, can the greatly reduced send out the draw depth of covering the front windshield side of inner panel, and then improve the material utilization ratio of sheet material in the front windshield side of sending out the lid inner panel, has reduced manufacturing cost.

Description

Can reduce sending out lid inner panel drawing die of drawing depth

Technical Field

The utility model relates to an automobile stamping die field especially relates to a can reduce sending out lid inner panel drawing die of drawing depth.

Background

For automobile panels, the panels are drawn primarily by means of a drawing die. The specific operation principle is as follows: and placing the plate on the molded surface of a blank holder jacked up by the air cushion mandril of the press, wherein the blank holder is annularly sleeved on the outline of the male die and is higher than the molded surface of the male die. When the press drives the upper die holder to move downwards to be matched with the lower die holder, the female die surface of the upper die holder contacts with the blank holder surface of the lower die first, and the air cushion ejector rod continues to be pressed downwards to move downwards after the plate material is clamped. At the moment, the male die profile of the lower die holder is raised relative to the blank holder and enters the female die profile of the upper die holder to start drawing and forming the plate, the female die profile of the upper die holder and the blank holder stop moving until the bottom dead center of the die, and the plate forming is finished. And finally, the press moves upwards to demold the upper die base and the lower die base, the drawing piece is separated from the female die profile of the upper die base and placed on the blank holder, and the drawing process is finished.

In the process of manufacturing large automobile panels by drawing molding, the material utilization rate of the large automobile panels has been a major requirement of automobile factories. The material utilization rate of the inner plate of the hood is a key research problem of the material utilization rate of large automobile covering parts in automobile factories. At present, for large automobile covering parts, the material utilization rate is improved by reducing the drawing depth of a plate material on the premise of ensuring the drawing forming effect. Especially for the automobile covering parts punched in batches, the accumulated economic value is considerable because each plate material can save a certain amount.

However, when the existing drawing die is used for manufacturing the inner plate of the hair cover, the drawing die requires that the molded surface of the female die presses the plate material horizontally placed on the molded surface of the blank holder in advance and keeps the plate material until the drawing is finished, and the problem of the shape of the inner plate of the hair cover, namely the horizontal height of the front windshield side of the inner plate of the hair cover is higher than the horizontal height of the head side of the inner plate of the hair cover, is solved. The drawing depth of the front windshield side of the inner plate of the hood can greatly exceed the drawing depth of the headstock side of the inner plate of the hood, and the material utilization rate of the plate material on the front windshield side of the inner plate of the hood is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can reduce sending out of drawing depth and cover inner panel drawing die, this drawing die is through setting up unsteady die, can greatly reduced send out the drawing depth of covering the front windshield side of inner panel, and then improve the material utilization ratio of sheet material in the front windshield side of sending out the covering inner panel, has reduced manufacturing cost.

In order to achieve the above purpose, the utility model provides a can reduce send out lid inner panel drawing die of drawing depth, including upper die base and die holder, the die holder upper surface is equipped with terrace die and blank holder, the upper die base lower surface is equipped with the unsteady die that wind shield side profile is corresponding and can upwards compress before sending out the lid inner panel with the terrace die, the upper die base lower surface still is equipped with the fixed die corresponding with all the other profiles of terrace die, under the free state the profile level of unsteady die is less than the profile level of fixed die, and the minimum of unsteady die and the minimum of fixed die are in same level.

As a further improvement, the blank holder includes first blank holder and the second blank holder of floating installation at die holder upper surface and, first blank holder corresponds with fixed die and covers the setting in front of the inner panel windshield side edge along the non-of terrace die, the second blank holder corresponds with the die that floats and covers the setting in front of the inner panel windshield side edge along the sending of terrace die.

As a further improvement of the present invention, the first pressing ring is an n-shaped pressing ring, and the second pressing ring is an n-shaped pressing ring.

As a further improvement, the lower extreme of first blank holder and second blank holder all is equipped with the ejector pin leg, be equipped with the air cushion ejector pin that corresponds with the ejector pin leg on the die holder.

As a further improvement of the utility model, a balance block is arranged on the upper surface of the first blank holder.

As a further improvement of the utility model, a balance block is arranged on the upper surface of the second blank holder.

As a further improvement, the two side edges of the lower surface of the floating female die are provided with convex blocks, and the two side edges of the upper surface of the lower die holder are provided with concave stoppers which are arranged on the concave edges and can move horizontally.

As a further improvement of the utility model, one side transmission of the concave stopper is connected with a driving device for driving the stopper.

As a further improvement of the present invention, the driving device is a cylinder.

As a further improvement, the floating die is provided with a nitrogen spring for connecting the floating die and the upper die base.

Compared with the prior art, the utility model discloses a can reduce send out lid inner panel drawing die's of drawing depth advantage does:

1. the lower surface of an upper die base of the device is provided with a floating female die which corresponds to the side molded surface of the front windshield of the hood inner plate of the male die and can be compressed upwards, and the lower surface of the upper die base is also provided with a fixed female die which corresponds to the other molded surfaces of the male die. The horizontal height of the molded surface of the floating female die in a free state is lower than that of the molded surface of the fixed female die, and the lowest point of the floating female die and the lowest point of the fixed female die are at the same horizontal height.

In the drawing die with the structure, the fixed female die molded surface and the floating female die molded surface form the inner plate molded surface of the hood and the upper pressure surface together. Meanwhile, as the horizontal height of the molded surface of the floating female die in a free state is lower than that of the molded surface of the fixed female die, and the lowest point of the floating female die and the lowest point of the fixed female die are at the same horizontal height, the floating female die is supported by the molded surface of the front windshield of the hood inner plate of the male die in the middle stage of the drawing process, so that the floating female die is compressed upwards and cannot move downwards synchronously and continuously along with the fixed female die. Therefore, by arranging the floating female die, the drawing depth of the front windshield side of the inner plate of the hood can be greatly reduced, the material utilization rate of the plate material on the front windshield side of the inner plate of the hood is further improved, and the production cost is reduced.

2. The first edge pressing ring is a reverse U-shaped edge pressing ring, and the second edge pressing ring is a cutting edge pressing ring. The edge pressing ring composed of the inverted U-shaped edge pressing ring and the inverted U-shaped edge pressing ring can enable the convex parts of the male die on two sides of the position of the front windshield of the inner capping plate to exceed the length of the plate, so that the plate on two sides of the position of the front windshield of the inner capping plate adopts a local opening drawing mode, and the size of the supplementary surface on two sides of the position of the front windshield of the inner capping plate can be further shortened. Therefore, the material utilization rate of the plate on two sides of the front windshield of the inner plate of the hood can be improved, and the production cost is reduced.

3. The lower ends of the first blank holder and the second blank holder are provided with ejector rod legs, and the lower die base is provided with an air cushion ejector rod corresponding to the ejector rod legs. Through the jacking matching of the air cushion ejector rod and the ejector rod leg, the first blank holder and the second blank holder can be arranged on the lower die base in a floating manner, and the requirements of bearing sheet materials and matching of male die and female die drawing sheet materials are met.

4. The edges of two sides of the lower surface of the floating female die are provided with convex blocks, and the edges of two sides of the upper surface of the lower die base are provided with concave limiting blocks which are arranged just opposite to the convex blocks with the concave parts and can move horizontally. When the drawing is delayed, the concave limiting block is in a state that the concave part is just opposite to the convex block, and the normal drawing is not influenced. When the upper die base moves upwards to open the die, the concave limiting block is driven by the cylinder to move forwards, namely the concave part and the convex block are staggered and are arranged below the floating female die, so that the floating female die is prevented from falling and crushing a drawing piece when the drawing die opens the die.

The invention will become more apparent from the following description when taken in conjunction with the accompanying drawings which illustrate embodiments of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic cross-sectional view of the present invention;

fig. 2 is a schematic plan view of the lower die holder of the present invention;

fig. 3 is a schematic plan view of the upper die base of the present invention;

FIG. 4 is a schematic view of the local structure of the present invention after the upper die base casting and the floating female die casting are removed;

FIG. 5 is a schematic view of a part of the structure of the present invention after the upper mold base casting and the fixed female mold casting are removed;

FIG. 6 is a second schematic view of the present invention showing the structure of the upper mold base and the fixed female mold after the upper mold base and the fixed female mold are removed;

FIG. 7 is a schematic view of the local structure of the present invention after the lower die holder casting and the male die casting are removed;

fig. 8 is a schematic view of the present invention showing a partially enlarged structure on the side of the front windshield of the inner plate of the hood of the male mold casting.

Wherein: 1-male die; 2-a first blank holder; 3-a second blank holder; 4-fixing the female die; 5-floating female die; 6-nitrogen spring; 7-a balance weight; 8-air cushion ejector rod; 9-ejector pin legs; 10-a concave stopper; 11-a cylinder; 12-an upper die holder; 13-lower die holder.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, the description is only for convenience of description of the present invention and simplification, but the indication or suggestion that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and therefore, the present invention should not be construed as being limited thereto.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present invention, "a plurality" means at least 3.

In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "set", "mounted", "connected" and "connected" should be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Embodiments of the present invention will now be described with reference to the accompanying drawings.

Examples

The utility model discloses a concrete implementation mode is shown in fig. 1-8, a can reduce send out lid inner panel drawing die of drawing depth, including upper die base 12 and die holder 13, the 13 upper surfaces of die holder are equipped with terrace die 1 and blank holder. Wherein, the lower surface of the upper die base 12 is provided with a floating die 5 which corresponds to the side molded surface of the front windshield of the inner plate of the cover sending of the convex die 1 and can be compressed upwards. The lower surface of the upper die holder 1 is also provided with a fixed female die 4 corresponding to the other molded surfaces of the male die 1. The horizontal height of the molded surface of the floating female die 5 in a free state is lower than that of the molded surface of the fixed female die 4, and the lowest point of the floating female die 5 and the lowest point of the fixed female die 4 are at the same horizontal height.

When the press drives the upper die holder 12 to move downwards, the molded surfaces of the fixed female die 4 and the floating female die 5 press the molded surface of the blank holder to move downwards, and the molded surface of the male die 1 is contacted with the sheet and draws the sheet together with the blank holder to be molded. Then, the press machine carries the upper die holder 12 to go down continuously, at the same time, the floating female die 5 abuts against the position of the equidistant line of the front windshield of the male die 1, and the floating female die 5 starts to be moved upwards and compressed. Next, the press moves down further with the upper die holder 12, the floating die 5 does not move down any more, and the fixed die 4 continues to move down with the blank holder until the drawing forming is completed.

In the drawing die with the structure, the molded surface of the fixed female die 4 and the molded surface of the floating female die 5 form the molded surface of the inner plate of the hood and the upper pressure surface together. Meanwhile, as the horizontal height of the molded surface of the floating female die 5 in a free state is lower than that of the molded surface of the fixed female die 4, and the lowest point of the floating female die 5 and the lowest point of the fixed female die 4 are at the same horizontal height, the floating female die 5 is propped against the molded surface of the front windshield of the inner plate of the hood of the male die 1 in the middle stage of the drawing process, so that the floating female die 5 is compressed upwards and cannot move downwards continuously along with the fixed female die 4 synchronously. Therefore, by arranging the floating female die 5, the drawing depth of the front windshield side of the inner plate of the hood can be greatly reduced, the material utilization rate of the plate material on the front windshield side of the inner plate of the hood is further improved, and the production cost is reduced.

The blank holder comprises a first blank holder 2 and a second blank holder 3 which are arranged on the upper surface of the lower die base 13 in a floating mode. The first blank holder 2 corresponds to the fixed female die 4 and is arranged along the side edge of the windshield before the non-covered inner plate of the male die 1, and the second blank holder 3 corresponds to the floating female die 5 and is arranged along the side edge of the windshield before the covered inner plate of the male die 1. In this embodiment, the first edge pressing ring 2 is n-shaped, and the second edge pressing ring 3 is a cutting edge pressing ring. The convex parts of the male die 1 at the two sides of the front windshield position of the inner capping plate can exceed the length of the plate through the inverted U-shaped blank holder and the blank holder consisting of the inverted U-shaped blank holders, so that the plate at the two sides of the front windshield position of the inner capping plate adopts a local opening drawing mode, and the size of the supplementary surface at the two sides of the front windshield position of the inner capping plate can be further shortened. Therefore, the material utilization rate of the plate materials on two sides of the front windshield of the inner plate of the hood can be improved, and the production cost is reduced.

Meanwhile, the lower ends of the first blank holder 2 and the second blank holder 3 are both provided with ejector rod legs 9, and the lower die holder 13 is provided with an air cushion ejector rod 8 corresponding to the ejector rod legs 9. Through the jacking matching of the air cushion ejector rod 8 and the ejector rod leg 9, the first blank holder 2 and the second blank holder 3 can be arranged on the lower die holder 13 in a floating manner, and the requirements of bearing sheet materials and matching of the male die 1 and the female die drawing sheet materials are met. In this embodiment, a balance weight 7 is provided on the upper surface of the first blank holder 2. A balance weight 7 is also arranged on the upper surface of the second blank holder 3.

And, the two side edges of the lower surface of the floating female die 5 are all provided with convex blocks, and the two side edges of the upper surface of the lower die base 13 are all provided with concave limiting blocks 10 which are arranged opposite to the convex blocks with the concave parts and can move horizontally. When the drawing is delayed, the concave limiting block 10 is in a state that the concave part is just opposite to the convex block, and the normal drawing is not influenced. When the upper die holder 12 moves upwards to open the die, the concave limiting block 10 is driven by the cylinder 11 to move forwards, namely the concave part and the convex block are staggered and are padded below the floating female die 5, so that the floating female die 5 is prevented from falling down to crush a drawing piece when the drawing die is opened.

In this embodiment, one side of the concave stopper 10 is connected with a driving device for driving the stopper. Specifically, the driving device is a cylinder 11. Of course, in the actual production process, other driving devices can be selected according to actual needs.

In addition, be equipped with between unsteady die 5 and the upper die base 12 and be used for connecting nitrogen gas spring 6 between them, through nitrogen gas spring 6, provide the swager power for it when satisfying the floating installation of unsteady die 5.

The working principle of the device is as follows:

when the drawing die enters the punching line to be punched, firstly, the press will drive the upper die base 12 to open the die, and the manipulator puts the sheet material on the lower die pressing face composed of the inverted U-shaped blank pressing ring profile which is jacked up by the air cushion mandril 8 and is higher than the profile of the male die 1 and the profile of the cutting edge. Then, when the press carries the upper die holder 12 to move downward, the profile of the upper die cavity 4 and the floating cavity 5 will press the profile of the n-shaped edge pressing ring and the profile of the n-shaped edge pressing ring to move downward, and the profile of the male die 1 will contact with the sheet 15 and start to draw the sheet together with the n-shaped edge pressing ring and the n-shaped edge pressing ring.

Then, the press drives the upper die base 12 to go down, the top rod leg 9 under the U-shaped blank holder and the air cushion top rod 8 are always contacted to the completion of the drawing forming, and the top rod leg 9 of the U-shaped blank holder and the press top rod are separated from the air cushion top rod 8 and fall down before the drawing forming is completed. This is because the n-shaped edge pressing ring is pressed down by the fixed female die 4 and simultaneously presses down the air cushion post 8 as the press carries the upper die holder 12 further downward. At this time, the floating female die 5 is abutted against the equidistant line position of the front windshield of the male die 1, the floating female die 5 starts to be moved upwards for compression, and the clamping ring is not pressed downwards along with the fixed female die 4. Therefore, the cutting edge will fall under the gravity until the drawing is completed.

When the upper die holder 12 moves upwards to open the die, the concave limiting block 10 is driven by the cylinder 11 to extend forwards and is arranged between the inverted-U-shaped blank holder and the floating female die 5, so that the floating female die 5 is prevented from falling and crushing a drawing piece when the drawing die opens the die. When the drawing is started, the concave limiting block 10 is pulled back to the original position by the air cylinder 11 without influencing the drawing.

It should be noted that the drawing die can greatly reduce the drawing depth of the front windshield side of the inner plate of the hood, and can also enable the plate material not to completely wrap the convex die 1 in the whole drawing process, namely, the plate materials positioned on two sides of the front windshield position of the inner plate of the hood adopt a local opening drawing mode, so that the size of the supplementary surfaces on two sides of the front windshield position of the inner plate of the hood can be reduced. Therefore, the drawing die can effectively improve the material utilization rate and reduce the production cost.

The present invention has been described above with reference to the preferred embodiments, but the present invention is not limited to the above-disclosed embodiments, and various modifications, equivalent combinations, which are made according to the essence of the present invention, should be covered.

Claims

1. The drawing die capable of reducing the drawing depth comprises an upper die holder (12) and a lower die holder (13), wherein a male die (1) and a blank holder are arranged on the upper surface of the lower die holder (13), and is characterized in that a floating female die (5) which corresponds to a side molded surface of a front windshield of an inner plate of the hair cover of the male die (1) and can be compressed upwards is arranged on the lower surface of the upper die holder (12), a fixed female die (4) which corresponds to the rest molded surfaces of the male die (1) is further arranged on the lower surface of the upper die holder (12), the molded surface horizontal height of the floating female die (5) in a free state is lower than the molded surface horizontal height of the fixed female die (4), and the lowest point of the floating female die (5) and the lowest point of the fixed female die (4) are at the same horizontal height.

2. The inner plate drawing die capable of reducing the drawing depth is characterized in that the blank holders comprise a first blank holder (2) and a second blank holder (3) which are arranged on the upper surface of a lower die holder (13) in a floating mode, the first blank holder (2) corresponds to a fixed female die (4) and is arranged along the side edge of a front windshield of a non-inner plate with the male die (1), and the second blank holder (3) corresponds to a floating female die (5) and is arranged along the side edge of the front windshield of the inner plate with the male die (1).

3. The inner hood panel drawing die capable of reducing the drawing depth according to claim 2, wherein the first bead (2) is an n-type bead, and the second bead (3) is a type bead.

4. The inner plate drawing die capable of reducing the drawing depth of the hair cover according to claim 2, characterized in that the lower ends of the first blank holder (2) and the second blank holder (3) are provided with ejector rod legs (9), and the lower die base (13) is provided with air cushion ejector rods (8) corresponding to the ejector rod legs (9).

5. The inner plate drawing die for the hair cover capable of reducing the drawing depth is characterized in that a balance block (7) is arranged on the upper surface of the first blank holder (2).

6. The inner plate drawing die for the hair cover capable of reducing the drawing depth as claimed in claim 2 or 5, characterized in that a balance weight (7) is arranged on the upper surface of the second blank holder (3).

7. The inner plate drawing die for the hair cover capable of reducing the drawing depth is characterized in that convex blocks are arranged on two side edges of the lower surface of the floating female die (5), and concave limiting blocks (10) which are opposite to the convex blocks with the concave parts and can move horizontally are arranged on two side edges of the upper surface of the lower die base (13).

8. The inner plate drawing die for the hair cover capable of reducing the drawing depth as claimed in claim 7, characterized in that a driving device for driving the limiting block is connected to one side of the concave limiting block (10) in a transmission manner.

9. The inner plate drawing die for the hair cover capable of reducing the drawing depth as claimed in claim 8, characterized in that the driving device is a cylinder (11).

10. The inner plate drawing die for the hair cover capable of reducing the drawing depth is characterized in that a nitrogen spring (6) for connecting the floating female die (5) and the upper die holder (12) is arranged between the floating female die and the upper die holder.