JPS6225479Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention involves loading each storage box in which sheets of two sizes, large and small, are stacked and stored separately into the loading section, and then loading the sheets from each storage box. The present invention relates to a sheet feeding device, such as a cut film feeding device, which takes out one sheet at a time and supplies it to the next conveyance mechanism.

[Conventional technology]

For example, in caseless X-ray speed photography equipment that uses a multi-film size system that allows the use of several types of cut film of different sizes, such as large-angle, four-cut, and six-cut film, unexploited cut film can be used. It is equipped with a plurality of storage boxes that are classified and stored separately according to size, and films of a desired size are taken out from these storage boxes as necessary for X-ray imaging. This conventional device uses a so-called multi-channel system, in which the size of the film storage box, or magazine, differs depending on the film size. It is usually assumed that However, having a plurality of series of film ejecting mechanisms complicates the mechanism of the connection section that transfers the film taken out from the magazine by the film ejecting mechanism to the next transport mechanism. Therefore, we have developed a device that simplifies the mechanism by unifying the magazines into one or two types and using the same size magazine for two film sizes, resulting in a one-channel, two-size system. is provided.

By the way, when taking out a film sheet from a magazine using a suction cup, etc., it is difficult to take it out with only one suction cup supporting it because the film sheet is generally weak, so it is usually necessary to remove the film from both ends in the width direction. 1 co-move with each other near the part
Each suction cup can be received. Therefore, when a magazine of the same size is used for cut films of two sizes, a pair of suction cups must be provided corresponding to the narrower cut films. However, for convenience of film positioning during shooting, each film is stacked and stored with one end surface specified in the width direction in contact with one inner surface of the magazine. When taking out the cut film, the cut film is supported by one of the suction cups at a point quite far from its end, and the part protruding outward from the suction cup hangs down. It feels a little weird. This may hinder the subsequent transfer of the film to, for example, a conveying mechanism consisting of a pair of upper and lower rollers.

To overcome these shortcomings,
For example, Japanese Utility Model Publication No. 55-7723 discloses an idea in which three suction devices are provided in a sheet removal device, and the suction device corresponding to the size of the sheet to be removed is activated by controlling the cock via a controller in accordance with pre-stored size information of the sheets contained in a container.

[Problem that the invention attempts to solve]

When using a sheet take-out device such as that disclosed in Japanese Utility Model Publication No. 55-7723, even if the sheets are of different sizes, as long as each sheet is stacked correctly at the required position in the container. , sheets of various sizes can be reliably sucked, and the suction device that does not take part in suction will not move unnecessarily. However, if a sheet storage box of the same size is to be shared for sheets of two sizes, large and small, the size of the storage box will be adjusted to fit the large size sheet. Therefore, when small-sized sheets are stored in the storage box, there is no problem as long as the sheets are stacked with a specific end surface of one side in the width direction accurately touching one inner surface of the storage box. However, if the sheets are misaligned when carrying the storage box, the sheets may not be able to be suctioned in the desired state, or even unnecessary sheets may be suctioned.

This idea was developed in a one-channel, two-size sheet feeding device in which the same size storage box is shared for two sizes of sheets, large and small. The technical challenge is to make it possible to absorb the material.

[Means for solving problems]

As a means to achieve the above object, this invention has a loading section into which two identical storage boxes containing sheets of two sizes, large and small, are inserted interchangeably, corresponding to the sheet size. The suction cup at one end is used for suctioning each end of large and small size sheets, and the suction cup at the other end is used for suctioning each end of large and small size sheets. A suction cup in the center is provided at the other end of the sheet, and a suction cup in the center is provided so as to correspond to the other end of the small-sized sheet, and of the two storage boxes, the storage box for storing the small-sized sheet is A spacer is provided with an actuator for activating the switch when inserted into the loading section, and has a hole in the upper surface for insertion of a suction cup corresponding to the other end of the large size sheet inside the storage box. and a two-way switching valve controlled by the switch operated by the actuator is interposed in the vacuum suction circuit of the suction cup corresponding to the other end of the large size sheet to constitute a sheet feeding device. did.

[Effect]

In the sheet feeding device of this invention configured as described above, when a storage box containing large-sized sheets is inserted into the loading section, the suction cup on one end side and the suction cup on the other end side One end and the other end of the sheet are respectively attracted. on the other hand,
A spacer is provided inside the storage box for storing small-sized sheets, and since this spacer divides the inside of the storage box to fit the small-sized sheets, there is a possibility that a gap may be created when the sheets are stored. Therefore, there is no possibility that the sheet will move and become misaligned within the storage box. When this small-sized storage box is inserted into the loading section, one end and the other end of the sheet are respectively suctioned by the suction cup on one end side and the suction cup in the center. At this time, the small-sized storage box is equipped with an actuator, and when the storage box is inserted into the loading section, a switch is activated that corresponds to the sheet size. A two-way switching valve interposed in the vacuum suction circuit of the suction cup on the other end side is controlled, so that the suction cup corresponding to the other end of the large-sized sheet does not perform unnecessary suction operation. At that time, the suction cup corresponding to the other end of the large sheet also moves up and down at the same time as the other two suction cups, but the spacer has a hole on the top surface for the suction cup to enter. Therefore, there has never been a case where the spacer and the suction cup interfere with each other, causing problems in the vertical movement of the suction cup.

〔Example〕

Hereinafter, an example of this invention will be described. 1 channel 2 used in a caseless X-ray rapid photography device
A size-type cut film supply device will be explained as an example.

FIG. 1 is a schematic front view of this device with a large-sized storage box loaded in the loading section of the main body, and FIG. 2 is a schematic side view thereof. It is housed in the storage box 1 exactly. For example, large square (14" x 14") cut films 2 are laminated. Three suction cups 3A, 3B, and 3C are arranged along the width direction toward the inner side of the end of the storage box 1, and both figures show the state in which all of them are in the standby position. . Those suction cups 3A, 3B,
A pair of upper and lower rollers 4, which are the next conveyance mechanism, are provided in front of 3C.

FIG. 4 is a vacuum suction circuit diagram of suction cups 3A, 3B, and 3C. For example, when a suction command is issued from an operation panel (not shown), suction cups 3A, 3B, 3
C descends vertically all at once from the standby position and approaches the cut film 2. At the same time as this operation, the vacuum pump 5 rotates, and the solenoids of the two-way switching valves 6 and 7 operate, so that the suction cup 3A,
The circuits between 3B and 3C and the vacuum pump 5 are electrically connected, and the suction cups 3A, 3B and 3C all start suctioning.
Then, when the suction cups 3A, 3B, and 3C are pressed against the surface of the cut film 2 and stopped, the degree of vacuum in the circuit is gradually increased. When the degree of vacuum reaches a certain value, the pressure switch 8 is activated and issues a signal to confirm the suction of the cut film 2, which causes the suction cups 3A, 3B, and 3C to rise all at once to store the suctioned cut film 2. Take it out from box 1. Then, the suction cups 3A, 3B, and 3C return to their standby positions, move laterally toward the conveyance roller 4, and deliver the cut film 2 to the conveyance roller 4. At this time, the current to the solenoids of the two-way switching valves 6 and 7 is briefly cut off, and the circuit is switched to the state shown in FIG. 4. By switching this circuit, the vacuum suction circuit is briefly cut off, and the suction cup 3
A, 3B, 3C are made conductive to the outside air, the vacuum is broken, and the cut film 2 is attached to the suction cups 3A, 3.
It is separated from B and 3C.

Next, in a storage box 1' of the same size, a cut film 2' smaller in size than the large square cut film 2 described above, for example, a four-cut film (10" x 12") is placed.
are stacked and stored with one end surface in contact with the inner surface of the storage box 1', and inserted into the loading section O in place of the storage box 1 containing the large square cut film 2 described above. . FIG. 3 is a schematic front view showing this loaded state. By using a spacer 9 in this storage box 1', the gap created by the difference in film size is filled, and the cut film 2' is moved within the storage box 1' so that it is tightly accommodated therein. It is made sure that nothing happens. Further, an actuator 10 consisting of a protrusion is provided on the outer surface of the end of the storage box 1' in the loading direction, and at the same time as the storage box 1' is loaded, this actuator 10 activates the micro switch S to switch between two directions. Valve 7
The conduction of the energized circuit to the solenoid is cut off immediately. In addition, micro switch S
Instead, if a reed switch is used, a magnet may be used as the actuator 10. Therefore, in this case, for example, even if a suction command is issued from the operation panel, the suction operation of the suction cup 3C is not performed, and the suction operation of the suction cup 3C is not performed, and the suction operation of the suction cup 2' is not performed, and the suction operation of the suction cup 2' is not performed, and the suction operation of the suction cup 3C is not performed. Conveyance roller 4
Each movement of delivery to and from the two suction cups 3A and 3B
This is done in the same manner as above. however,
During the above operation, the suction cup 3C is attached to the other suction cups 3A and 3B.
At the same time, the spacer 9 descends to the position shown by the two-dot chain line and rises again, so a hole 11 is formed in the spacer 9 to avoid interference with the suction cup 3C.

By the way, in this embodiment device, the suction cups 3A, 3B, 3C are arranged in the width direction of the cut films 2, 2'. The discs 3A and 3B are designed to suction the cut film 2', for example, in the vicinity of both ends in the width direction, so that the parts outside the suction disc 3C or 3B of the cut film 2, 2' The protruding portion does not sag at all, so that the cut film can always be stably delivered to and from the conveying roller 4 without any hindrance.

The scope of application of this invention is not limited to cut film supply devices, but can also be used to sort thick paper, cardboard, plastic, metal plates, etc. by size and stack them in storage boxes of the same size. In the case where the sheets are loaded into the loading section, and the sheets are taken out one by one from the storage box and fed to the next conveyance mechanism,
The sheet feeding device of this invention can be used.

[Effect of idea]

As is clear from the above explanation, in the sheet feeding device according to this invention, even if the sheet is small, the sheet will not move and become misaligned in the storage box, At least both ends of the sheets of any size are accurately sucked by suction cups in the width direction, and the sheets are always taken out one by one from the storage box in a stable state.
It is possible to reliably transfer the sheet to the next conveyance mechanism.

[Brief explanation of the drawing]

The figures show one embodiment of this invention, in which Fig. 1 is a schematic front view of the sheet feeding device with a large size storage box loaded in the loading section of the main body, Fig. 2 is a schematic side view thereof, and Fig. 3 The figure is a schematic front view of a small-sized storage box in the same state as in Figure 1.
FIG. 4 is a circuit diagram showing an example of a vacuum suction circuit for a suction cup. O... Loading section, 1, 1'... Storage box, 2, 2'...
...Sheet (cut film), 3A, 3B, 3C
... Suction cup, 4 ... Conveyance mechanism (conveyance roller), 5
...Vacuum pump, 6,7...Two-way switching valve, 9...
...Spacer, 10... Actuator, 11... Hole, S...
...Micro switch.

Claims (1)

[Claims for Utility Model Registration] Two identical storage boxes 1 and 1' containing sheets of two sizes, large and small, are inserted into the loading section O in a manner that corresponds to the sheet size. In addition to providing an operating switch S, three suction cups 3A, 3B, and 3 move up and down at the same time.
C, the suction cup 3A on one end side is used for suctioning each end of large and small size sheets, the suction cup 3C on the other end side is used for suctioning the other end of the large size sheet, and the suction cup 3B in the center are respectively provided so as to correspond to the other end of the small-sized sheet, and of the two storage boxes 1 and 1', the storage box 1' that stores the small-sized sheet is provided with a storage box 1' that is placed in a position corresponding to the other end of the small-sized sheet. An actuator 10 for operating the switch S is provided, and a hole 1 for entry of a suction cup 3C corresponding to the other end of the large sheet is provided inside the storage box 1'.
1 is provided with a spacer 9 opened on the top surface, and a suction cup 3 corresponding to the other end of the large size sheet is provided.
A sheet feeding device characterized in that a two-way switching valve 7 controlled by the switch S operated by the actuator 10 is interposed in the vacuum adsorption circuit C.