CN210334032U

CN210334032U - Pre-positioning device for automobile drawing die

Info

Publication number: CN210334032U
Application number: CN201920975719.5U
Authority: CN
Inventors: 付洪美; 何冰冰
Original assignee: Zhengzhou Paisi Car Body Engineering Co ltd
Current assignee: Zhengzhou Paisi Car Body Engineering Co ltd
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2020-04-17
Anticipated expiration: 2029-06-27

Abstract

The utility model relates to a pre-positioning device for car drawing die utensil, including die holder, blank holder, drawing terrace die, upper die base, pre-positioning mechanism, die holder central authorities are fixed to be provided with rectangular shape drawing terrace die, correspond the drawing terrace die and be provided with the drawing die on being located the upper die base, the upper die base that is located drawing die both ends corresponds the drawing terrace die and fixes and be provided with pre-positioning mechanism, pre-positioning mechanism is including the fixed nitrogen cylinder mounting panel that sets up on the upper die base, fixed mounting is on the die core that presses material in the fixed setting of nitrogen cylinder mounting panel lower extreme, and the fixed scalable reference column that is provided with in nitrogen cylinder bottom, and the reference. The utility model relates to a simply, reasonable novelty, prepositioning mechanism is limited on the upper die base and presses the material core to carry out the prepositioning to the yielding position of work piece, ensures the work piece shaping of drawing, effectively avoids the work piece to walk the uneven problem of corrugating that causes of material, improves drawing work piece quality and production efficiency.

Description

Pre-positioning device for automobile drawing die

Technical Field

The utility model relates to a mould production technical field, concretely relates to prepositioning device for car drawing die utensil.

Background

With the pursuit of the appearance quality of the automobile model by consumers, the requirements of automobile manufacturers on the mold production enterprises are higher and higher. In the drawing and forming process of the lower support plate of the automobile door inner panel, the actual working state of a die, the position of a plate in the die and the installation precision of die parts are all important factors influencing the stamping work, as shown in fig. 3, the workpiece of the lower support plate of the automobile door inner panel comprises a drawing workpiece convex rib 1201 and drawing workpiece side plates 1202 positioned at two sides of the drawing workpiece convex rib 1201, the stamping depth of the product is large, the forming area is small, the depth angle is close to 90 degrees, the crack is easily caused at the drawing workpiece end plate 1203 position by the conventional drawing mode, namely, the opening drawing operation is adopted, and the problem of serious wrinkling is easily caused because the material flow of the workpiece at the end part cannot be effectively controlled in the drawing process of the workpiece, and the subsequent process is needed for reshaping operation, and the control of the product quality is not favorable and the production efficiency.

Disclosure of Invention

To the problem, the utility model provides a prepositioning device for car drawing die, based on support piece punching press deep-drawing under the car door plant is big, the profile is little, the little technological requirement of angle, a reasonable design possesses prepositioning function's drawing die, and after drawing operation begins, prepositioning mechanism carries out the prepositioning to easily deformation part at first to ensure the work piece in the drawing forming process, effectively avoid the work piece to walk the inhomogeneous problem of wrinkling that causes of material, improve drawing work piece quality and production efficiency. Therefore, the utility model provides a following technical scheme:

a pre-positioning device for an automobile drawing die comprises a lower die holder, a blank holder, a drawing male die, an upper die holder and a pre-positioning mechanism, wherein a strip-shaped drawing male die is fixedly arranged in the center of the lower die holder, the blank holder is arranged on the drawing male die in a sleeved mode on the upper die holder and is correspondingly arranged on the blank holder, a drawing female die is arranged on the upper die holder corresponding to the drawing male die, pre-positioning mechanisms are fixedly arranged on the upper die holders at two ends of the drawing female die corresponding to the drawing male die, each pre-positioning mechanism comprises a nitrogen cylinder mounting plate fixedly arranged on the upper die holder, a nitrogen cylinder fixedly arranged at the lower end of the nitrogen cylinder mounting plate is fixedly arranged on a material pressing core, a telescopic positioning column is fixedly arranged at the bottom end of the nitrogen cylinder, and.

And material returning screws are fixedly arranged at four corners of the upper end of the material pressing core.

In the above, the bottom end of the positioning column is higher than the pressing core.

The nitrogen cylinder mounting plate is provided with a plurality of fixing holes for mounting screws, and the two sides of the nitrogen cylinder mounting plate are provided with material returning chutes for the material returning screws to pass through.

The utility model discloses beneficial effect:

the utility model relates to a simply, reasonable novelty, based on support piece punching press deep-drawing degree of depth under the car door plant is big, the profile is little, the little technological requirement of angle, a reasonable design drawing die who possesses the prepositioning function, after drawing operation begins, prepositioning mechanism at first carries out the prepositioning to easily deformation part to ensure the work piece at the drawing forming in-process, effectively avoid the work piece to walk the uneven problem of corrugating that causes of material, improve drawing work piece quality and production efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.

Fig. 1 is a schematic structural diagram of a main body of an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a pre-positioning mechanism according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a drawn finished workpiece according to an embodiment of the present invention.

Reference numerals:

1-a lower die holder, 2-a blank holder, 3-a drawing convex die, 4-an upper die holder, 5-a material returning screw, 6-a nitrogen cylinder mounting plate, 7-a nitrogen cylinder, 8-a material pressing core, 9-a positioning column, 10-a fixing hole, 11-a material returning chute, 12-a drawing workpiece, 1201-a drawing workpiece rib, 1202-a drawing workpiece side plate and 1203-a drawing workpiece end plate.

Detailed Description

In order to make those skilled in the art better understand the solution of the embodiments of the present invention, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings and the implementation manner.

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 present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are used only for convenience of describing the present application and for simplicity of description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.

In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Embodiment 1, referring to fig. 1 to 2, a pre-positioning device for an automobile drawing die comprises a lower die holder 1, a blank holder 2, a drawing punch 3, an upper die holder 4 and a pre-positioning mechanism 13, wherein a strip-shaped drawing punch 3 is fixedly arranged in the center of the lower die holder 1, the blank holder 2 is arranged on the drawing punch 3 and sleeved on the upper die holder 4, the upper die holder 4 is correspondingly arranged on the blank holder 2, a drawing die 8 is arranged on the upper die holder and corresponds to the drawing punch 3, the pre-positioning mechanism 13 is fixedly arranged on the upper die holder 4 and corresponds to the drawing punch 3 at two ends of the drawing die 8, the pre-positioning mechanism comprises a nitrogen cylinder mounting plate 6 fixedly arranged on the upper die holder 4, a nitrogen cylinder 7 fixedly arranged at the lower end of the nitrogen cylinder mounting plate 6 is fixedly arranged on a material pressing core 9, a telescopic positioning column 14 is fixedly arranged at the bottom end of the nitrogen cylinder 7, the four corners of the upper end of the material pressing core 9 are fixedly provided with material returning screws 5, and the bottom end of the positioning column 14 is higher than the depth of the material pressing core 9.

Referring to fig. 2, four corners of the nitrogen cylinder mounting plate 6 are provided with fixing holes 10 for mounting screws, and material returning chutes 11 for passing the material returning screws 5 are arranged at two sides of the nitrogen cylinder mounting plate 6.

The working principle is as follows:

when the device works, firstly, the blank holder 2 is lifted, and a workpiece material sheet is placed on the blank holder 2; secondly, the upper die base 4 of the machine tool is opened to start to run downwards, before the upper die base 4 enters a station, positioning columns 14 at the lower ends of pre-positioning mechanisms 13 at two ends of the drawing male die 3 are firstly pressed on the workpiece, and the part of the drawing workpiece which is easy to wrinkle is pre-positioned; and finally, with the continuous descending of the upper die holder 4, the pressing core 9 and the drawing female die 8 on the upper die holder 4 cooperate with the drawing male die 3 on the lower die holder 1 to gradually stretch and form the workpiece.

While the preferred embodiments of the present invention have been described in the foregoing illustrative manner, it will be understood by those skilled in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention.

Claims

1. A prepositioning device for an automobile drawing die is characterized in that: the drawing die comprises a lower die holder (1), a blank holder (2), a drawing male die (3), an upper die holder (4) and a pre-positioning mechanism (13), wherein a strip-shaped drawing male die (3) is fixedly arranged at the center of the lower die holder (1), the blank holder (2) is arranged on the drawing male die (3) in a sleeved mode on the upper die holder (4), the upper die holder (4) is correspondingly arranged on the blank holder (2), a drawing female die (8) is arranged on the upper die holder corresponding to the drawing male die (3), the pre-positioning mechanism (13) is fixedly arranged on the upper die holder (4) corresponding to the drawing male die (4) at two ends of the drawing female die (8), the pre-positioning mechanism comprises a nitrogen cylinder mounting plate (6) fixedly arranged on the upper die holder (4), and a nitrogen cylinder (7) fixedly arranged at the lower end of the nitrogen cylinder mounting plate (, and the bottom end of the nitrogen cylinder (7) is fixedly provided with a telescopic positioning column (14), and the positioning column (14) is correspondingly pressed at two ends of the drawing convex die (3).

2. The pre-positioning device for the automobile drawing die as claimed in claim 1, wherein: and material returning screws (5) are fixedly arranged at four corners of the upper end of the material pressing core (9).

3. The pre-positioning device for the automobile drawing die as claimed in claim 1, wherein: the bottom end of the positioning column (14) is higher than the depth of the material pressing core (9).

4. The pre-positioning device for the automobile drawing die as claimed in claim 1, wherein: the nitrogen cylinder mounting plate (6) four corners be provided with fixed orifices (10) that are used for the mounting screw, be located nitrogen cylinder mounting plate (6) both sides and be provided with material returned spout (11) that supply material returned screw (5) to pass through.