JPS63188437A - Medium transfer device for blank - Google Patents

Abstract

PURPOSE:To cope with the both of an compound blanking and blanking by providing the traveling body for blank transfer shiftably to aniso-pitch traveling and iso-pitch traveling by a specific drive control device. CONSTITUTION:The traveling body 11 for blank transfer is provided between a 1st press machine 2 for blanking and a 2nd press machine 12 for blank working and shiftable to an aniso-pitch traveling and iso-pitch traveling by a specified drive control device. Namely an aniso-pitch traveling is performed in the compound blanking that a die center and blank center differ and the aniso-pitch is taken as corresponding to the displacement of the die and blank center. Also the iso-pitch traveling is taken in blanking of the die and blank center being the same. As a result all of the blank can be stopped at respective correct position at each odd ordinal numbered stage, so the both workings of compound blanking and blanking can be coped with.

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention relates to an intermediate conveying device for conveying a blank from a first press machine for blank punching to a second press machine for blank processing. [Background technology and its problems] A blank is formed from the strip material by punching the strip material fed intermittently from an uncoiler device at two locations in the width direction of the strip material using a die that reciprocates in the width direction of the strip material of a first press machine. is punched out in a zigzag pattern, and this blank is conveyed to the second press machine side by a blank conveying body whose traveling direction is orthogonal to the feeding direction of the strip material, and a plurality of stages are provided in the traveling direction of the blank conveying body. In the device that transfers the blanks from the blank conveying body to the second press machine in the final stage, each blank is placed on the blank conveying body at the punching point, and the blank conveying body is intermittently moved at equal pitches. If this is done, it is not possible to stop all the blanks at the final stage, so in JP-A-60-154825, the intermittent travel distance of the blank transporting body is set to 4j blanks at two locations in the width direction of the F-shaped material! The pitch is unequal according to the spacing between the adjacent parts. According to this, the difference in uneven pitches is large because it corresponds to the interval between the blank punching points, and therefore it is difficult to increase the traveling speed of the blank transporting body, and it is difficult to increase work efficiency. There was a problem. On the other hand, the applicant filed a patent application No. 61-2776.84,
A blank receiving body that is movable up and down and reciprocated in the width direction of the strip material is provided on the blanking stage of the first press machine, and the blank receiver that has risen and received the blank is moved in the width direction of the strip material while being lowered. Accordingly, an apparatus is provided in which each blank is delivered to a blank conveying traveling body at two punching centers in the width direction of a strip material. According to this, all the blanks are placed on the blank transport vehicle at the same position, so that all the blanks can be stopped at the final stage by the intermittent movement of the blank transport vehicle at equal pitches. However, in the apparatus of Japanese Patent Application No. 61-277684, when the punching process is a cutting process in which the die center of the punching die and the blank center are the same and a part of the strip material is punched out using this die, Valid only for In addition to this punching process, the punching process includes a total punching process in which a strip material is cut into two equal parts in the width direction of the strip material using a die. The die used in this total blanking process has a long cutting blade in the width direction of the strip material so that it can process strip materials with different width dimensions. Therefore, the center of the die and the center of the blank are in the width direction of the strip material. It will be different. Since the die and the blank receiving body integrally reciprocate in the width direction of the strip-shaped material to perform the punching process, when the blank is transferred from the blank receiving body to the blank transport vehicle, the transfer position is as described above. Compared to the case of cut-out processing, the center of the mold and the center of the blank will be shifted by the distance between them.
For this reason, if the blank transporting body is made to travel intermittently at equal pitches as described above, it will not be possible to accurately stop all the blanks at the final stage. In the case of total blanking, all blanks must be accurately stopped at the final stage in order to press the blanks as specified with the second press machine. As mentioned above, in the blanking stage of the first press machine, the die center and the blank center are cut out in the same manner,
There was a problem in that the apparatus of Japanese Patent Application No. 61 277,684 could only be applied to the cutting process, even though the entire die cutting process was performed in which the center of the mold and the center of the blank were different.

〔Effect of the invention〕

According to the present invention, by adding improvements to the apparatus of Japanese Patent Application No. 61-277684, it becomes possible to deal with both complete punching and cut-out machining, thereby providing versatility and practicality.

[Brief explanation of the drawing]

Figure 1 is a plan view showing the arrangement of the device, and Figure 2 is the
3 is a plan view showing the relationship between the die center and the blank center in the complete punching process, FIG. 4 is a plan view showing the relationship between the die center and the blank center in the cutting process, Fig. 5 is a block diagram of the drive control device, Fig. 6 is a diagram showing the intermittent travel amount of the blank transporting traveling body during the complete punching process, and Fig. 7 is a diagram showing the intermittent traveling amount of the blank transporting traveling body during the cutting process. It is. 1... Strip material, 2... First press machine, 3...
Slider, 5...Lower die, 6...Upper die, 7...Mold, 9...Blank receiver, 11...Magnet which is a traveling body for conveying blanks, 12...Second press machine,
19.20...Mold cutting blade, 23...Sequencer, 30...Drive control device, BS...Blanking stage, Sl. St, S3...stage. Agent: Patent attorney Minoru Kinoshita (and 1 other person) Figure 3
Figure 4 Figure 5 Figure 6 Figure 6 Bs s・ Mi2 Pe3 Figure 7

Claims (2)

[Claims] (1) A first press machine that punches an intermittently fed band-shaped material with a die that reciprocates in the width direction of the band-shaped material and punches blanks from this band-shaped material at two locations in the width direction of the band-shaped material, and a first press machine that processes this blank. A blank conveyance traveling body is disposed between the second press machine and the direction perpendicular to the feeding direction of the strip-shaped material is an intermittent traveling direction, and conveys the blank to the second press machine, and the first press machine has upper and lower It is movable and can reciprocate in the width direction of the strip-shaped material, and moves the blank received by rising in the width direction of the strip-shaped material while lowering it, and transports the blank at the center of the punching process at two locations in the width direction of the strip-shaped material. In an intermediate blank conveying device in which a blank receiving body for delivering to a traveling body is arranged, the blank conveying traveling body can be freely switched between uneven pitch traveling and uniform pitch traveling by a drive control device that causes the blank conveying traveling body to travel intermittently. An intermediate conveying device for blanks, which is characterized by: (2) In claim 1, at least one or more stages are provided in the traveling direction of the blank conveying body from the blanking stage of the first press machine, and an odd-numbered stage is provided from the blanking stage of the first press machine in the traveling direction of the blank conveying body. This is the final stage for delivering the blank to a second press machine, and the punching process of the strip material is performed by punching the strip material two times in the width direction of the strip material using a mold having a center different from the center of the blank.
In the case of total punching that cuts into equal parts, the width dimension of the strip material is
, the reciprocating stroke of the mold in the width direction of the strip material is 2L,
When the interval between the stages is a, the drive control device moves the blank transporting body at an unequal pitch that alternately repeats intermittent traveling distances of a-x and a+x (here, x=l-w/4). In the case of a cutting process in which a part of the band-shaped material is punched out using a mold having the same center as the blank center, the drive control device moves the blank transporting body to the stage interval. An intermediate conveyance device for blanks, characterized in that the blanks are moved at an equal pitch with the same length as the intermittent distance.