JP2010149154A - Multi-stage type press machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a multi-stage type press machine which has several kinds of press dies at a multi-stage and performs press working by switching the press dies, wherein footprint and space saving in the height direction are achieved, and also, cost is reduced. <P>SOLUTION: The multi-stage type press machine includes: a supporting frame 10 in which a first press die 2 and a second press die 3 are arranged so as to be adjacent up and down; a base member 15 provided inside the supporting frame 10 so as to be freely lifted/lowered, and further interposed between the first press die 2 and the second pres die 3, wherein the lower die B of the first press die 2 is disposed at the upper face side and the upper die C of the second press die 3 is disposed at the lower face side; and lifting/lowering driving means 25, 26 moving the base member 15 so as to be lifted/lowered, wherein the lifting/lowering driving means 25, 26 allow the base member 15 to move so as to be lifted or lowered, thus press forming is performed in either the first press die 2 or the second press die 3. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a multi-stage press device that has a plurality of press dies for different workpieces depending on the vehicle type such as an automobile door, and performs press processing by switching the press dies.

  For example, when manufacturing a door of an automobile, the outer panel and the inner panel are overlapped, pressed, and hemmed to form a single body. In this press working, a press die composed of a pair of upper die and lower die corresponding to each panel is used. The press dies have different shapes depending on the type of vehicle. If a press device is provided for each die, there is a problem that space is required and the cost is increased.

  For this reason, a multistage press apparatus has been proposed in which a plurality of types of press dies can be used in a single press apparatus by replacing different press dies. For example, as shown in FIG. 5, the multistage press device disclosed in Patent Document 1 corresponds to hemming coupling of four types of doors. As shown in the figure, below the press machine 50, two types of press dies 53, 54 each consisting of a pair of an upper die 51 and a lower die 52 are stacked in two upper and lower stages to form a die unit 55. Yes. The die unit 55 can be easily replaced with a die unit 58 in which separately provided (two types) press dies 56 and 57 are stacked in two upper and lower stages.

The press machine 50 includes a hydraulic unit 60. The hydraulic unit 60 drives a hydraulic cylinder 61 and performs a pressing process by moving the ram 62 up and down together with the upper mold 51.
Here, when the press working is performed using the upper press die 53, as shown in the figure, the connection member 63 for integrally connecting the press die 53 is disconnected and the ram 62 is moved up and down. The
On the other hand, when the press working is performed using the lower press die 54, as shown in FIG. 6, the press die 53 is integrally connected by a connecting member, and the connecting member 54 of the press die 54 is disconnected, and the ram 62 is removed. Realized by moving up and down.
JP-A-6-277771

By arranging a plurality of press dies in multiple stages as in the press device disclosed in Patent Document 1, it is possible to cope with a plurality of types of press dies and to reduce the footprint.
However, in the multistage press device disclosed in Patent Document 1, the hydraulic cylinder 61 protrudes above the ram 62 and the hydraulic unit that drives the hydraulic cylinder is disposed on the upper base above the ram 62. Because it is necessary, there is a problem that the space is bulky and the space in the ceiling direction is pressed.

  The present invention has been made under the circumstances as described above, and has a plurality of types of press dies in multiple stages, and in a multi-stage press apparatus that performs press processing by switching the press dies, the footprint and the height direction An object of the present invention is to provide a multi-stage press apparatus that can realize a space saving and can reduce the cost.

  In order to solve the above-described problems, a multistage press device according to the present invention includes at least a first press die and a second press die each having a pair of upper die and lower die, and each press die A multi-stage press device that performs press molding processing by pressing an upper die and a lower die together, and supports the press die in a step shape, and the first press die and the second press die are vertically moved. And a support frame arranged adjacent to each other, and provided in the support frame so as to be movable up and down, and interposed between the first press die and the second press die, The lower mold includes a base member disposed on the upper surface side, and the upper mold of the second press mold is disposed on the lower surface side, and an elevating drive means for moving the base member up and down, and the elevating drive means moves the base member To move up or down Ri, characterized in that the press-molding process is performed in any one of the first press die and a second press die.

The upper die of the first press die or the lower die of the second press die located in the moving direction of the base member moved up and down by the elevating drive means may be fixedly arranged in the frame. desirable.
The frame includes a rack member having a gear cutting surface formed along a height direction of the frame, and the elevating drive means includes a pinion that meshes with the rack member, and a drive unit that rotationally drives the pinion. Preferably, the elevating drive means is provided on the base member, and the base member is moved up and down in the frame by the drive unit rotating the pinion in a predetermined direction. The drive unit of the drive means is preferably a servo motor.

In this way, the press molding process using either the first press die or the second press die can be performed by moving the base member up and down in the support frame whose height position is fixed. At this time, the raising / lowering driving means that is the driving source of the press load can be moved up and down in a rack and pinion manner by integrating the base member with the base member.
Therefore, a space as in the conventional hydraulic cylinder is not required, and space saving in the height direction and footprint can be realized. In addition, an effect of reducing the equipment cost can be obtained.
Further, by using a servo motor, effects such as low sound, low vibration, and low power can be obtained.

  According to the present invention, in a multi-stage press apparatus that has a plurality of types of press dies in multiple stages and performs press processing by switching the press dies, the footprint and the space in the height direction are realized, and the cost is reduced. It is possible to obtain a multi-stage press apparatus that can perform the above-described process.

Embodiments of a multi-stage press device according to the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a multistage press apparatus according to the present invention.
The multistage press apparatus 1 supports a plurality of types of press dies in a multistage manner within a support frame 10. In the present embodiment, two types of press dies, that is, a first press die 2 and a second press die 3 are arranged adjacent to each other in the vertical direction, and are supported in a step shape. The press mold 2 includes a pair of upper mold A and lower mold B, and the press mold 3 includes a pair of upper mold C and lower mold D.
The support frame 10 includes a top plate 11 and a bottom plate 12 and support columns 13 and 14 that connect them on the left and right sides. Although not shown, other reinforcing members may be provided to reinforce the support frame 10.

As shown, the upper die A of the press die 2 is fixed to the lower surface side of the top plate 11, and the lower die D of the press die 3 is fixed to the upper surface side of the bottom plate 12.
Further, a plate-like lifting base 15 (base member) provided so as to be movable up and down in the frame 10 is provided. The lower die B of the press die 2 is fixed to the upper surface side of the lifting base 15 and the press die is placed on the lower surface side. Three upper molds C are fixed.
In the frame 10, for example, cylindrical rod-shaped guide rods 18 and 19 are provided in the vicinity of the columns 13 and 14 in parallel with the columns. The guide rods 18 and 19 are inserted into the elevating base 15 so that the guide rods 18 and 19 are slidable vertically.

In order to realize a stable lifting operation of the lifting base 15, guides that cover the left and right sides of the lower mold B fixed to the lifting base 15 in a state where the predetermined lengths of the guide rods 18 and 19 are in sliding contact with each other. Pipes 21 are provided, and guide pipes 22 are similarly provided on the left and right sides of the upper die C.
Further, pipe-like stopper members 23 covering the predetermined lengths of the guide rods 18 and 19 are provided on the left and right sides of the upper mold A fixed to the top plate 11, and the lower mold D fixed to the bottom plate 12 is provided. Similarly, stopper members 24 are provided on the left and right sides.

When the elevating base 15 is moved upward and the upper end of the guide pipe 21 sliding along the guide rods 18 and 19 comes into contact with the lower end of the stopper member 23 and stops, the upper die A and the lower die B in the press die 2 are stopped. The press state is completed.
On the other hand, when the elevating base 15 is lowered and the lower end of the guide pipe 22 that slides along the guide rods 18 and 19 comes into contact with the upper end of the stopper member 24 and stops, the upper die C and the lower die D in the press die 3 The press state is completed.

Further, as drive sources for the lifting movement of the lifting base 15, lifting drive parts (lifting drive means) 25, 26 are provided at both left and right ends, and by the action of these lifting drive parts 25, 26, the lifting base 15 is supported by the support 13. 14 is moved up and down in the frame 10.
More specifically, each of the lift drive units 25 and 26 includes a servo motor 27 (drive unit) and an encoder 28 that detects the number of rotations of the servo motor 27. The detection result of the encoder 28 is based on the lift base. 15 is output to the control unit 30 that performs the lifting control.
In other words, position control for press molding and the rotational drive of the two servo motors 27 are feedback controlled by the control unit 30 in order to maintain the equilibrium state of the lift base 15.

Further, based on the enlarged view of the periphery of the servo motor 27 in FIG. 2, the servo motor 27 is fixed to the left and right sides of the elevating base 15, and the bracket 29 is slidably engaged along the support column 13 (14). Is provided. A rack surface 13a (14a) is formed on one surface of the support column 13 (14), and a pinion 27b provided on the pinion shaft 27a of the servo motor 27 meshes with the rack surface 13a (14a). It is made like that.
That is, the columns 13 and 14 function as rack members, and the lifting base 15 moves up and down along the columns 13 and 14 by a so-called rack and pinion system. Further, the elevating drive units 25 and 26 function as a press load driving source by moving the elevating base 15 up and down.

  Therefore, the pinion shaft 27a of the servo motor 27 is driven to rotate in either direction (around the axis), and the pinion 27b meshes with the rack surface 13a (14a) of the support column 13 (14), thereby being integrated with the servo motor 27. The raised / lowered base 15 (that is, the lower die B and the upper die C) is moved up and down to perform press molding.

When performing press processing using the press die 2 with the multistage press device 1 having such a configuration, for example, as shown in FIG. 1, after setting the work in a state where the upper die A and the lower die B are separated, the control unit The elevating base 15 is moved up by the control of 30.
When the upper end of the guide pipe 21 that slides along the guide rods 18 and 19 comes into contact with the lower end of the stopper member 23 and stops, the upper die A and the lower die B of the press die 2 as shown in FIG. The press state is made to complete.

On the other hand, when performing press processing using the press die 3, similarly, after setting the work in a state where the upper die A and the lower die B are separated, the elevating base 15 is moved downward by the control of the control unit 30.
When the lower end of the guide pipe 22 that slides along the guide rods 18 and 19 comes into contact with the upper end of the stopper member 24 and stops, the upper die C and the lower die D of the press die 3 as shown in FIG. The press state is made to complete.

As described above, according to the present embodiment, press molding using either the press die 2 or the press die 3 by moving the elevating base 15 up and down in the support frame 10 whose height position is fixed. Processing can be performed. At this time, the elevating base 15 is moved up and down, and the elevating drive units 25 and 26 serving as a drive source of the press load use the servo motor 27, so that the elevating base 15 is integrated with the elevating base 15 and moved up and down like a rack and pinion. Can do.
Therefore, a space as in the conventional hydraulic cylinder is not required, and space saving in the height direction and footprint can be realized. In addition, an effect of reducing the equipment cost can be obtained.
Further, by using a servo motor, effects such as low sound, low vibration, and low power can be obtained.

In the above-described embodiment, an example in which only two different types of press dies are supported in a step shape in the support frame has been shown. However, in the present invention, the present invention is not limited to this, and there are a plurality of types in the frame. The present invention can also be applied to a configuration in which three or more press dies are arranged. In that case, a base member similar to the elevating base 15 is interposed between the press dies that are arranged in multiple stages and are adjacent to each other vertically, and the lower die of the upper press die is arranged on the upper surface side of each base member. The upper die of the lower press die may be disposed on the lower surface side.
When the upper mold or the lower mold of the press mold positioned in the moving direction of the base member to be moved up and down for press molding is disposed on another base member, the base member is fixedly disposed. A sufficient press pressure can be applied.

FIG. 1 is a front view of a multistage press apparatus according to the present invention. FIG. 2 is an enlarged view of the periphery of a servo motor provided in the multistage press apparatus of FIG. FIG. 3 is a diagram illustrating a state in which press molding of the upper press die is completed in the multistage press apparatus of FIG. 1. FIG. 4 is a view showing a state where the press molding of the lower press die is completed in the multistage press apparatus of FIG. 1. FIG. 5 is a diagram for explaining a conventional multi-stage press apparatus. FIG. 6 is another view for explaining a conventional multistage press apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Multistage type press apparatus 2 Press die 3 Press die 10 Support frame 13 Support | pillar (rack member)
13a Rack surface 14 Prop (rack member)
14a Rack surface 15 Lifting base (base member)
18 Guide rod 19 Guide rod 21 Guide pipe 22 Guide pipe 25 Lift drive unit (lift drive means)
26 Elevating drive unit (elevating drive means)
27 Servo motor 27b Pinion 28 Encoder 30 Control part A Upper mold B Lower mold C Upper mold D Lower mold

Claims (4)

A multi-stage system comprising at least a first press mold and a second press mold each having a pair of upper mold and lower mold, and performing press molding processing by pressing the upper mold and lower mold of each press mold together A pressing device,
A support frame that supports the press die in a stepped manner, and the first press die and the second press die are arranged adjacent to each other vertically;
It is provided in the support frame so as to be movable up and down, and is interposed between the first press die and the second press die, and the lower die of the first press die is located on the upper surface side, A base member in which the upper die of the press die is arranged on the lower surface side;
Elevating drive means for moving the base member up and down,
A multi-stage press apparatus characterized in that a press forming process is performed in either the first press mold or the second press mold by the lifting drive means moving the base member up or down.   The upper die of the first press die or the lower die of the second press die located in the moving direction of the base member moved up and down by the elevating drive means is fixedly arranged in the frame. The multistage press device according to claim 1. The frame includes a rack member having a gear cutting surface formed along a height direction of the frame,
The elevating drive means includes a pinion that meshes with the rack member, and a drive unit that rotationally drives the pinion.
The said raising / lowering drive means is provided in the said base member, and when the said drive part rotationally drives the said pinion in a predetermined direction, the said base member moves up and down within the said frame, The Claim 1 or Claim characterized by the above-mentioned. 2. A multistage press device described in 2.   4. The multistage press device according to claim 3, wherein the drive unit of the drive means is a servo motor.

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