JPH069701Y2 - Mold equipment for combined machining - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a die device for composite machining, and more specifically, for example, when pressing a thin plate member, hemming, trimming, or the like of the thin plate member is performed. A processing tool part for performing other processing work can be swingably provided, and the processing tool part can be engaged with the thin plate member only once according to the opening / closing operation of the die to perform a desired processing work with high accuracy. The present invention relates to a mold device for combined machining.

[Background of the Invention] For example, when molding an outer plate member such as a bonnet or a door constituting an automobile body, a large number of mold apparatuses of different types are used. That is, in practice, a press die device for forming a thin plate member made of steel into a predetermined shape, a trimming die device for removing an unnecessary portion from the thin plate member, and a piercing for providing a hole or the like at a desired portion. There is a need for a mold tool and a hemming tool for folding the edges.

However, in order to prepare a large number of mold apparatuses for performing a single machining operation as described above, the space occupied by the mold apparatuses as a whole is considerably expanded, and it is extremely uneconomical. Has been done. Moreover, since the thin plate member is sequentially conveyed to each mold device and the respective working operations are individually performed, the molding process of the outer plate member cannot be efficiently performed.

For this reason, various types of composite machining die apparatuses have been proposed in the past, in which different types of machining operations are integrally performed by a single die apparatus. That is, in this type of composite processing mold device, while having a lower die and an upper die for press working, when the lower die and the upper die are opened and closed, engage with a workpiece that is a workpiece, For example, it is known to provide an operating member for performing hemming. At this time, the actuating member is configured to be separated from the work after the work is hemmed. This is to prevent the actuating member from interfering with the press work by the lower die and the upper die.

However, when the lower die and the upper die are closed, the actuating member engages with the work to perform hemming and then separates from the work, so that the lower die and the upper die are opened after the press working is completed. When this is done, the actuating member moves to the work side and re-engages with the work. by this,
Hemming of the edge of the workpiece is substantially twice performed, and there is a possibility that distortion or cracks may occur in the edge and spoil the appearance.

Therefore, the applicant of the present invention arranges a processing tool through a toggle link on a movable table that can move back and forth with respect to a work, and when the lower mold and the upper mold are closed, the movable table is moved toward the work side by a cam. The toggle link is pressed and extended by the pressure member to perform the predetermined processing with the processing tool, and then the toggle link is bent to separate the processing tool, while the lower die and the upper die are opened. A mold apparatus has been proposed in which the toggle ring is bent during operation to prevent the processing tool from engaging with the work (see Japanese Utility Model Publication No. 58-40981).

Therefore, when the lower die and the upper die are closed, the work tool is displaced forwards and backwards with respect to the work to perform a predetermined work on the work and move away from the work, while on the other hand, the work tool is opened when the lower die and the upper die are opened. Does not move to the work side. As a result, it is possible to prevent the processing tool from unnecessarily repeating the same machining operation on the work, and it is possible to obtain an effect that it is possible to perform a complex machining operation that is aesthetically pleasing and highly accurate.

[Object of the Invention] The present invention has been made to a mold device for performing this kind of complex machining work, in which one mold is engaged with a first link portion so as to be swingable at a predetermined angle. Then, the first link part is provided with a processing tool part for processing the work, and the second link part which is swingable by a predetermined angle is engaged to connect the one die and the other die. When the work is closed, the second link portion and the first link portion are integrally oscillated via the drive cam that moves to the work side, and the workpiece is subjected to predetermined processing by the processing tool portion, and then this processing is performed. A position for separating the tool part from the work by swinging only the second link part that engages with the drive cam that is separated from the work side when the respective molds are opened. Configured to hold. As a result, it is possible to prevent the processing tool from engaging with the work twice, and in particular, it is possible to simplify the structure at the same time and easily downsize the entire mold device. The purpose is to provide.

[Means for Achieving the Purpose] In order to achieve the above-mentioned object, the present invention includes a first link part that is swingably supported by one mold at a predetermined angle,
A processing tool portion provided on the first link portion for performing desired processing on a work, a second link portion rotatably supported by the first link portion at a predetermined angle, and the second link portion. A drive cam that has first and second cam surfaces that engage with each other and is capable of advancing and retracting via a cam driver provided in the other die, and the one die and the other die are provided. When the closing operation is performed, the drive cam moves in one direction, the second link portion and the first link portion swing integrally through the first cam surface, and the workpiece is processed by the processing tool portion. When the processing tool portion is separated from the work through the rear second cam surface and the one die and the other die are opened, the drive cam moves in a direction opposite to the one direction. The second link portion swings with respect to the first link portion via the second and first cam surfaces, and the processing tool There is characterized by being configured to prevent the engaging the workpiece.

[Embodiment] Next, a preferred embodiment of the mold device for combined machining according to the present invention will be given and described in detail below with reference to the accompanying drawings.

In FIGS. 1 and 2A to 2C, reference numeral 10 indicates a mold device for combined machining according to this embodiment. The mold device 10 includes a lower mold 12, an upper mold 14, a drive cam 18 which is moved forward and backward by a cam driver 16 provided in the upper mold 14, and is swingably displaced under the action of the drive cam 18. Basically, it is composed of an operating member 20 that performs a predetermined process, for example, a hemming process.

A forming die 24 is integrally bulged at the end of the die base 22 that forms the lower die 12, and a long groove portion 26 is formed in the die base 22 so as to be oriented toward the forming die 24 side. , An opening in the middle of this groove 26
28 communicate. On the other hand, the forming die 24 is provided with a stopper portion 30 protruding in the vertical direction in FIG. To do. A mounting portion 34 is formed on the forming die 24 above the stopper portion 30, and a die surface 36 corresponding to a desired shape of a molded product is provided on the upper portion of the forming die 24.

Next, the drive cam 18 is disposed in the groove portion 26 of the die base 22 so as to be able to move back and forth. A cam driver is provided at one end of the drive cam 18.
An inclined surface 18a is formed corresponding to the inclined surface 16a of the sixteen, and the first cam surface 38 and the flat surface are formed on the other end side of the drive cam 18.
40 and the second cam surface 42 which is inclined in the opposite direction to the first cam surface 38 are integrally formed. Further, a protrusion 44 is bulged vertically downward in the substantially central portion of the bottom surface of the drive cam 18,
44 is made to enter the opening 28, and one end of the spring 46 is engaged with the protrusion 44. In this case, the drive cam
The width 18 of the groove 18 is selected so that it fits into the groove 26, and is pressed in the direction away from the forming die 24 along the groove 26 by the elastic force of the spring 46.

On the other hand, the operating member 20 is swingably mounted on the mounting portion 34 of the forming die 24. That is, one end of the first link portion 48 constituting the actuating member 20 is swingably supported by the mounting portion 34 via the pin member 50.
By engaging with the locking surface 32 of the stopper portion 30, its swing range is restricted. As the processing tool portion, for example, a hemming punch 52 is integrally formed on the first link portion 48. The hemming punch 52 has a U-shaped cross section and extends along the edge of the die surface 36. It extends in the horizontal direction by a predetermined length.

Further, the second link portion 56 is swingably engaged with the other end of the first ring portion 48 via the pin member 54. Here, the first link part 48 is provided with a stopper 58, and the second link part 56
Engages with this stopper 58 to allow the first link portion to
It is held at an angle of approximately 90 ° with 48, and outward from this state (direction away from forming die 24)
Rock to. A pair of rollers 60a and 60b are rotatably supported at the lower end of the second link portion 56, and these rollers 60a and 60b roll on the drive cam 18.

The composite machining die device according to the present embodiment is basically configured as described above, and its operation and effect will be described below.

First, the upper mold 14 is separated from the lower mold 12, and the lower mold 12
The work W made of thin steel plate is placed on the die surface 36 provided on the forming die 24. Here, as shown in FIG. 2A, the edge portion of the work W is formed to be bent at about 90 °. Further, the rollers 60 a and 60 b of the second link portion 56 that constitutes the operating member 20 are placed on the first cam surface 38 of the drive cam 18.

Then, when the upper die 14 is displaced downward, the cam driver 16 provided on the upper die 14 engages with the drive cam 18, and the drive cam 18 is moved to the spring 46 via the respective inclined surfaces 16a, 18a. It moves to the forming die 24 side (direction of arrow A) against the resilience. Therefore, the rollers 60a and 60b are the first
The second link part 56 is pressed by the cam surface 38 and the second link part 56 is formed by the forming die.
It swings to the 24 side and engages with the stopper 58 provided on the first link portion 48.

The driving cam 18 further moves in the direction of arrow A under the lowering action of the upper mold 14, and the rollers 60a and 60b move from the first cam surface 38 to a flat surface.
When reaching 40, since the second link portion 56 is engaged with the stopper 58, the second link portion 56 and the first link portion 48 integrally swing vertically upward with the pin member 50 as a fulcrum. It moves dynamically. Therefore, the hemming punch 52 provided in the first link portion 48 is oscillated and displaced toward the die surface 36 side, and the edge portion of the work W placed on the die surface 36 is hemmed (see FIG. 1). And Figure 2b).

In this way, the rollers 60a, 60b roll on the flat surface 40 from the first cam surface 38 and the hemming is performed by the hemming punch 52, and then the roller 60a is moved under the action of moving the drive cam 18 in the arrow A direction. , 60b are placed on the second cam surface 42 side. At that time, the second cam surface 42 is inclined in the opposite direction to the first cam surface 38, and the rollers 60a and 60b are displaced along the inclination of the second cam surface 42. Therefore, after the first link portion 48 swings vertically downward with the pin member 50 as a fulcrum and engages with and is retained by the locking surface 32 of the stopper portion 30, the second link portion 56 is moved by the pin member 50. Swing outward with 54 as the fulcrum. by this,
The hemming punch 52 is separated from the work W (second
(See FIG. C), a punch (not shown) provided on the upper die 14 performs a predetermined press working or the like on the work W, and the hemming punch 52 does not interfere with the press working or the like.

When the upper die 14 is displaced upward after the press work and the like by the lower die 12 and the upper die 14, the drive cam 18 is elastically actuated by the spring 46 to form the forming die 24 along the groove portion 26.
To move away from (direction of arrow B). Therefore,
The rollers 60a and 60b roll on the second cam surface 42, the flat surface 40, and the first cam surface 38 again.

In this case, in the present embodiment, the swingable first link portion 48
Is held at a predetermined angular position by the stopper portion 30, and the second link portion 56 is swingable outward from the position where the second link portion 56 is locked by the stopper 58 with respect to the first link portion 48. Therefore, when the drive cam 18 moves in the direction of arrow B,
The rollers 60a and 60b have the second cam surface 42, the flat surface 40 and the first
These rollers 60 are rolled by rolling on the cam surface 38.
Only the second link portion 56 that supports a and 60b is a pin member.
Swing-displaces with 54 as a fulcrum. As a result, it is possible to prevent the hemming punch 52 provided in the first link portion 48 from swinging and displacing to the work W side again and engaging with the work W. As a result, the effect that it is possible to obtain a high-quality molded product having an excellent appearance without causing distortion or cracks at the edge of the work W is obtained.

Moreover, in this embodiment, the first and second link portions 48 and 56 that are substantially oscillatingly displaced are provided, and the first link portion 48 is integrally formed with the hemming punch 52 as a working tool portion. There is. Therefore, the structure of the operating member 20 is simplified at once,
The entire mold apparatus 10 can be economically manufactured. Furthermore, it is only necessary to provide the actuating member 20, the drive cam 18, and the cam driver 16, and it is possible to easily achieve the downsizing of the entire mold apparatus 10.

The working member 20 includes a hemming punch 52 as a processing tool portion.
May be separately provided, and various processing tool parts such as a trimming punch and a piercing punch may be provided.

[Advantages of the Invention] As described above, according to the present invention, when the lower die and the upper die are closed to perform a predetermined machining on the workpiece, the operating member is oscillated and displaced in accordance with the closing operation. After performing other processing such as hemming processing on this work, this operating member is separated from the work. Further, when the upper die and the lower die are opened, the operating member is held in a state of being separated from the work. For this reason, the work such as the hemming process is not performed twice on the same place on the work, the occurrence of distortion and cracks is prevented, and a molded product having excellent quality can be obtained. In particular, since the structure of the actuating member can be simplified and downsized, it is possible to economically and compactly manufacture the entire die apparatus.

Although the present invention has been described with reference to the preferred embodiment, the present invention is not limited to this embodiment.
It goes without saying that various improvements and design changes can be made without departing from the scope of the present invention.

[Brief description of drawings]

 FIG. 1 is a partially omitted perspective view of a mold apparatus according to the present invention, and FIGS. 2A to 2C are operation explanatory views of the mold apparatus. 10 …… Mold device, 12 …… Lower mold 14 …… Upper mold, 16 …… Cam driver 18 …… Driving cam, 20 …… Operating member 24 …… Forming die, 30 …… Stopper part 38, 42 …… Cam surface, 48 …… Link section 52 …… Hemming punch, 56 …… Link section

Claims (3)

[Scope of utility model registration request] 1. A first link part supported by one of the molds so as to be swingable by a predetermined angle, a processing tool part provided on the first link part for performing desired processing on a work, and First
A cam provided on the other mold having a second link part rotatably supported by the link part at a predetermined angle and first and second cam surfaces engaging with the second link part. A drive cam that can move back and forth via a driver, and when the one die and the other die are closed, the drive cam moves in one direction and the second link is provided via the first cam surface. Part and the first link part integrally swing to process the work by the work tool part, and thereafter the work tool part is separated from the work via the second cam surface, and further the one die When the first and second dies are opened, the drive cam moves in the direction opposite to the one direction and the second link portion swings with respect to the first link portion via the second and first cam surfaces thereof. And a metal for composite machining, characterized in that it is configured to prevent the machining tool portion from engaging with a work. Apparatus. 2. The apparatus according to claim 1, wherein one die is provided with a first stopper for holding the first link portion at a predetermined angular position, and the first link portion is provided with a second link portion. A mold device for combined machining, comprising a second stopper that holds the same at an angular position. 3. An apparatus according to claim 1, wherein the second link portion is configured to support a rotating body that rolls on a drive cam.