JPH03248722A - Blanking device - Google Patents

Abstract

PURPOSE:To enlarge a blank size by operating the selecting mechanism for die setting positions so that prescribed dies of plural kinds of blanking dies take cutting places in sequence and controlling the feed of metal plate after the operation variably in accordance with the kind of the die. CONSTITUTION:Plural kinds of blanking dies 14 are set on a press 12 in series in the feeding direction of the metal plate. Considering positions to set these dies to the press, one of cutting positions to cut the metal plate and non-cutting positions not to cut the metal plate when the press is operated is selected by the selecting mechanism for the die setting position. Further, whenever the press is operated by a controlling means, the selecting mechanism 16 for the die setting positions is operated so that prescribed blanking dies 14 take the respective cutting positions in sequence and the feed of the metal plate after the press is operated is controlled variably in accordance with the kind of the die 14 at the cutting position. Consequently, the blank size of a metal plate possible to blank can be increased by a single press and without enlarging its size.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a blanking device that blanks a plate material into a predetermined shape while intermittently feeding the plate material.

(Prior art) Generally, a blanking processing device intermittently feeds a plate material at a partial pitch while blanking the plate material into a predetermined shape using a press machine equipped with a blanking die. It is configured as follows. For example, special fair 1-
Japanese Patent No. 44465 discloses a blanking device for blanking a side panel of a vehicle body.

(Problem to be solved by the invention) In such blanking processing equipment, multiple types of blanking molds are often attached to the press machine, but in conventional blanking processing equipment, all of these molds are attached to the press machine. At the same time, it is designed to perform a cutting action,
For this reason, the cutting shape pattern is the same every time the press is operated. Therefore, when blanking is performed using a single press machine, a blanking mold corresponding to the blank size of the plate material is required, and the press machine also needs to be sized accordingly. For this reason, when the blank size of the plate material becomes large, such as the side panel of the above-mentioned vehicle body, a large press machine is required.

The present invention has been made in view of the above circumstances, and provides a blanking machine that can increase the blank size of a sheet material that can be blanked using a single press machine without increasing the size of the press machine. The purpose of this invention is to provide a ranking processing device.

(Means for Solving the Problems) A blanking device according to the present invention is capable of attaching a plurality of types of blanking molds to a press machine, and allowing only the predetermined molds to sequentially cut a plate material each time the press machine operates. It is configured to control the installation position and to variably control the feed rate of the plate material immediately after cutting depending on the type of mold used for this cutting, thereby achieving the above purpose. .

That is, in a blanking processing device that blanks a plate material into a predetermined shape while feeding the plate material intermittently, the press machine includes a plurality of types of blanking molds installed in series in the feeding direction of the plate material; A mold mounting position selection mechanism that selects the mounting position of each of the blanking molds with respect to the press machine to either a cutting position where the plate material is cut when the press machine is operated or a non-cutting position where the plate material is not cut. Each time the press machine operates, the mold mounting position selection mechanism is operated so that predetermined molds among the plurality of types of blanking molds sequentially take the cutting position, and the press machine is operated. The present invention is characterized by comprising a control means for variably controlling the feed amount of the plate material after the press operation according to the type of the blanking die that was at the cutting position when the press operation was activated.

(Operations and Effects of the Invention) As shown in the above configuration, a plurality of types of blanking molds are attached to the press machine in series in the sheet material feeding direction,
The mounting position of each of these blanking molds with respect to the press machine is selected by a mold mounting position selection mechanism to either a cutting position where the plate material is cut when the press machine is operated or a non-cutting position where the plate material is not cut, In addition, the mold mounting position selection mechanism is controlled by the control means so that each time the press machine operates,
The predetermined blanking dies are operated to take the cutting position one after another, and furthermore, the feed amount of the plate material after the press machine is activated is controlled by the control means so that the blanking dies that were in the cutting position when the press machine is activated are operated. Since it is variably controlled depending on the type of mold, even if the blank size is larger than the pitch between each blanking mold, one blanking mold can uniformly control the blank shape. After cutting a portion, and before cutting another portion of the blank shape using the next blanking mold, by applying a predetermined amount of plate material, it becomes possible to perform blanking processing.

Therefore, according to the present invention, it is possible to increase the blank size of a plate material that can be blanked using a single press machine without increasing the size of the press machine.

(Examples) Examples of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a sectional side view of a main part showing an embodiment of a blanking device according to the present invention, and is a sectional view taken along the line I-1 in FIGS. 2 and 3. FIG. 2 and 3 are views taken along the line ■--■ and the line ■--■ in FIG. 1, showing the upper and lower molds of the blanking mold, respectively. Further, FIG. 4 is a sectional view taken along the line N--g in FIGS. 2 and 3.

As shown in these figures, the blanking device 10 is a device that blanks the sheet material W into the shape of a car body side panel while intermittently feeding the sheet material W, and includes a press machine 12 and a press machine 12. A plurality of types of blanking molds 14A, 14B, 14c attached to the press machine 12, a mold mounting position selection mechanism IEiA, 18B, 18c that selects the mounting position of each of these molds with respect to the press machine 12, and each of these molds It is equipped with a control means (not shown) that controls the operation of the mold attachment position selection mechanism and the feed control of the plate material W.

The blanking molds 14A, 14B, and 14C are common to the upper molds 14Au, 14Bu, and 14cu, respectively, and the lower mold 14f! These consist of a movable part 12u and a fixed part 12f of the press machine 12 in series in the feeding direction of the plate material W.
! are attached to each. An upper blade 18A is fixed to the upper mold 14Au, and an upper blade 18B1 is fixed to the upper mold 14Bu.
and 18B2 are fixedly installed, and the upper mold 14Cu has an upper blade 18
C1 and 18C2 are fixedly installed, while the lower mold 14
J! includes a lower blade 20A that performs a shearing action with each of the upper blades,
20B1, 20B2, 20Ct, and 20Cz are fixedly installed. Further, around each of the upper blades, blank holders 22A, 22B1, 22B2, 22CI
, 22Cz are provided.

Movable part 12u and fixed part 121 in the press machine 12
Horizontal positioning with the blanking molds 14A, 14B is achieved by slidably fitting a plurality of guide portions 24u and 241 formed therein.
14C upper mold 14Au, 14Bu, 14cu
The horizontal positioning of the upper mold 14Au and the lower mold 141
.

A plurality of guide parts 26u and 26J formed on 14Bu, 14Cu and the fixed part 121 of the press machine 12! This is done by a slidable fit.

Upper mold 14Au for the movable part 12u of the press machine 12
. As shown in , always (
The movable part 12u of the press 12 is urged upward (over the entire range of the vertical movement stroke).

The above mold mounting position selection mechanism 18A, 16B, 18C
are the upper molds 14Au, 14Bu, 14cu of each blanking mold for the movable part 12u of the press 12.
When the press machine 12 operates (that is, when the movable part 12u completes the downward movement for blanking processing), the vertical mounting position of each upper die 14A u + 14 Bu
r 14 Upper blades L8A, 18B, fixed to Cu
18B2, 18c,.

18C2 is a mechanism for selecting either a cutting position where the plate material W is cut or a non-cutting position where it is not cut, and one selection mechanism 16A, two selection mechanisms 18B, and two selection mechanisms 16C are provided.

Since all of these selection mechanisms have the same configuration, 18
To explain B, as shown in FIG. 1, the selection mechanism 16B includes a plurality of engagement pieces 32 partially embedded in the upper surface of the upper mold 14Bu, and a structure between the engagement pieces 32 and the movable part 12u. It consists of a horizontally arranged long liner 34 and a selection cylinder 38 that is supported by the movable part 12u via a bracket 36 and reciprocates the liner 34. The selection cylinder 38 is operated to select the liner 34. When moving forward, as shown in the figure, the engagement recesses 34a formed on the lower surface of the liner 34 with the same spacing and shape as the engagement pieces 32 become misaligned with the engagement pieces 32, while the selection cylinder 38 moves in the opposite direction. When the liner 34 retreats due to the operation of It has become.

The selection mechanism 18B is activated when the press 12 is not in operation (that is, when the upper die 14Bu is in a raised state).
However, at this time, the force of the gas spring 30 that urges the upper die 14Bυ upward is weakened, so the upper die 14Bu is moved by its own weight to the movable part 12.
u (more precisely, the engaging piece 32 separates from the liner 34), thereby allowing the liner 34 to move forward and backward smoothly. In this example,
Furthermore, a plurality of coil springs (not shown) are interposed between the upper mold 14Bu and the movable part 12u, and these coil springs always urge the upper mold 14Bu downward. These coil springs are provided to facilitate the separation from the movable part 12u in view of the fact that the molding cycle of the blanking process is short and the upper die 14Bu may not be able to quickly separate from the movable part 12u due to its own weight alone. , its spring constant is set to a relatively small value.

The control means controls the upper blades 18A, 18B of the upper molds 14Au and 14Bu each time the press machine 12 operates.
18B2 and upper blade 18C, 18c2 of upper mold 14cu
operates each mold mounting position selection mechanism 18A, 16B, 16C so as to sequentially take the cutting position, and
The feed amount of the plate material W after the press machine 12 is operated is
2. Variable control is performed depending on the type of upper blade that is at the cutting position during the second operation.

Next, the operation of this embodiment will be explained.

FIG. 5 is a plan view showing the blanking process.

As shown in the figure, the plate material W is pressed by the press I! 12, holes are drilled in the blank shapes A, B1 and B2 shown by the dashed dotted line in the figure, and after that, after being fed at a pitch of P1,
By the next operation of the press 12, blank shapes C1 and C2 shown by broken lines in the figure are punched out, thereby forming a blank material W' that is to become a vehicle body side panel.

Thereafter, after the plate material W is fed at a pitch Pz, the press machine 12 is operated to form the blank shape A, B1, B1,
Holes are drilled in B2. Thereafter, by repeating the above operations, blank materials W' are successively formed.

To be more specific about the above blanking operation, the drilling process with the blank shapes A and Bl + 82 is performed using the upper blade 18A, the lower blade 20A, and the upper blade 18B1, respectively.
and lower blade 20B1, upper blade 18B2 and lower blade 20B2
The blank shape CI + C is made by the shearing action of
The outline cutting process in step 2 is performed by the shearing action of the upper blade 18c, the lower blade 20CI, the upper blade 18C2, and the lower blade 20C2, respectively. The upper mold 18Bu on which the mold mounting position selection mechanisms 18A and 16B are fixedly mounted is
When in the cutting position due to the operation of the upper blades 18c1,
The upper die 14cu to which the die 18Cz is fixed is in the non-cutting position due to the non-operation of the die attachment position selection mechanism 18C. Therefore, when the press machine 12 is operated in this state, only hole drilling is performed as shown in FIG. 1, and outline cutting is not performed as shown in FIG. 4. The selection mechanism 16A, 18
The operation of the selection mechanisms 16A, 16B and 16c is controlled by a control means, and if the operation and non-operation states of the selection mechanisms 16A, 16B and 16c are reversed, the upper dies 14Au, 1
4Bu is the non-cutting position, upper mold 14cu is the cutting position,
In this case, only the outline cutting process is performed and no hole drilling process is performed. Therefore, by the control means, if the feed amount of the plate material W immediately after the hole punching process is set to pitch P1, and the feed amount of the plate material W immediately after the outline punching process is set to pitch P2, the blanking process will be performed. .

As described in detail above, according to this embodiment, the drilling process in the blank shapes A, B, .B2 and the blank shape c1. c.
2 are performed alternately, and each time each processing is performed, the pitch p1. Since the plate material W is fed at p2, the blank size can be blanked with a single press machine, or it can be blanked using a conventional blanking machine (i.e., the plate material W is fed at a constant feed pitch, Blanking processing equipment configured to form all blank shapes in one station)
It is larger by the length of the feed pitch P2 compared to the length of the feed pitch P2. Moreover, this pitch P2 can be further increased as needed.

Further, in this embodiment, the liner 34 is moved forward and backward to select the mold mounting position.
4 and the engaging piece 32 are separated from each other, so switching between the cutting position and the non-cutting position of the upper blades 18A, 18B1, 18B2 and the upper blades 18c, 18c2 is performed extremely smoothly. be able to.

Furthermore, in this embodiment, the upper molds 14Au, 14
Upper blades 18A, 18B1 and 18B2, 18c1 and 18c2 are respectively installed on Bu and 14Cu, and lower mold 14
A, & lower blade 2QA, 20B1.2QB2.20C,
, 2 [Since the IC2 is incorporated as a unit and the upper and lower molds are positioned in the horizontal direction by the guide parts 26u and 261, there is a risk of galling occurring between the upper and lower blades. do not have.

[Brief explanation of drawings]

FIG. 1 is a sectional side view of a main part showing one embodiment of a blanking device according to the present invention, and sectional views taken along the line I-I in FIGS. Figure 4 is a cross-sectional view taken along the line IV-IV in Figures 2 and 3,
The figure is a blanking process diagram showing the effect of the above embodiment. 10...Blanking processing device 12...Press machine 12u...Movable part 12f
! ... Fixed parts 14A, 14B, 14c... Blanking mold 14
Au, 14Bu, 14Cu - Upper mold 14A
J! , 14BJ, 141...lower mold 16A, 16
B, 16C... Mold mounting position selection mechanism 18A, 18
Br, 18B2.18ct, 18cz - Upper blade 2O
A, 20B1.20B2, 20(,1, 20C2・
...Lower blade W...Plate material W'...Blank material A, B1. B2. CI, c2...Blank shape pl
, p2... feed pitch

Claims (1)

[Claims] A blanking device that blanks a plate material into a predetermined shape while feeding the plate material intermittently, wherein a plurality of types of blanking molds are installed in series in the feeding direction of the plate material. A press machine, and a mold for selecting a mounting position of each of the blanking molds with respect to the press machine to either a cutting position where the plate material is cut or a non-cutting position where the plate material is not cut when the press machine is operated. a mounting position selection mechanism; and each time the press machine is operated, the mold mounting position selection mechanism is operated so that predetermined molds among the plurality of types of blanking molds sequentially take the cutting position. and control means for variably controlling the feed rate of the sheet material after the press machine is operated, depending on the type of blanking die that was in the cutting position when the press machine was operated. Ranking processing device.