JPH0755744B2 - Seat body stop mechanism - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism for stopping a sheet body, particularly a photosensitive sheet body of a medical X-ray photographing apparatus, at a photographing position.

[0002]

2. Description of the Related Art Conventionally, an X-ray film is generally used in a medical X-ray photographing apparatus, and a troublesome work of developing and fixing in a light-shielded state with great care so as not to be exposed to external light. Therefore, there is a possibility that it may not be possible to respond in an emergency.
Moreover, since this X-ray film uses a sensitizer coated with silver iodide, there is a possibility that silver as a resource will be depleted. By the way, in recent years, a radiation image recording / reproducing system for obtaining a radiation transmission image of a subject by using a stimulable fluorescent material has been developed, and in particular, it has been widely spread in the medical field, and has already been disclosed in JP-A-62-205939. An image recording device thereof is also known by. This device stores the photostimulable phosphor sheet in a supply magazine, takes out the sheets one by one with a suction plate and sends them to a photographing section, and the photographing section irradiates the sheet with radiation to irradiate a subject. After recording the radiation image, the sheet is stored in the receive magazine. The sheet on which the image information is recorded is photoelectrically read by the image reading device to be converted into a visible image for medical diagnosis. Further, this stimulable phosphor sheet can be repeatedly used.

[0003]

However, in the image recording apparatus disclosed by the above-mentioned known technique, the sheet body fed horizontally is placed in the vertical state as a means for stopping the photostimulable phosphor sheet at the photographing position. It displaces and drops the sheet body to the standing imaging unit and stops it on the mounting table below, so let's stop feeding out many sheets to the imaging unit at high speed one after another in a short time. However, it is mechanically impossible to naturally drop the sheet body. For this reason, for example, in angiography, it is not possible to take a high-speed image of the blood flow of the contrast agent flowing in the blood vessel at high speed.
In addition, since the sheet member cannot be rotated in a horizontal state or the like unless the sheet member is set on the photographing unit, the operation is complicated and cannot be dealt with promptly. In view of the above problems, the present invention solves this problem, and provides a sheet body stop mechanism that can surely stop a sheet body fed at high speed at a predetermined position of an imaging unit. The purpose is to obtain.

[0004]

As a means for achieving this, the present invention provides a sheet processing section on a sheet feeding path, a substrate is provided in the sheet processing section, and the substrate can be moved up and down. In addition to controlling, a stopper is provided at the end portion on the discharge portion side, and a roller is provided at the discharge portion so that the sheet body can be constantly fed out, and a roller is provided to feed the discharge portion by the stopper as the substrate moves upward. The roller is moved upward to stop the discharging operation of the sheet body, and the sheet body sent to the substrate is stopped by the processing section by the stopper.

[0005]

Embodiments of the present invention will be described in detail with reference to the embodiments shown in the drawings. A main body 1 of the photographing apparatus includes a supply unit 3, a conveying unit 4, a photographing unit 5, a storage unit 6, and a drive mechanism 2 that operates these. In FIG. 1 of the drawing of this embodiment, the right direction is the front and the left direction is the rear. The drive mechanism 2 includes a sheet supply rotary shaft 21 that operates the supply unit 3 of the main body 1, a sheet transport rotary shaft 22 that operates the transport unit 4, and a front and rear space with a space for operating the substrate 51 of the imaging unit 5. Substrate operating rotary shafts 23, 24 arranged in
The rotary shaft 25 for discharging the sheet, which operates the storage portion 6, has the side walls 1
It is rotatably installed between 1 and 11, respectively. Then, between the drive motor 26 and the sheet transporting rotary shaft 22, between the sheet transporting rotary shaft 22 and the sheet discharging rotary shaft 25, the sheet discharging rotary shaft 25 and the substrate operating rear rotary shaft 24. Between the substrate operating rear rotating shaft 24 and the substrate operating front rotating shaft 23, and between the substrate operating front rotating shaft 23 and the sheet supplying rotating shaft 21 by belts 27, respectively. Then, the respective rotary shafts are rotationally driven.

The supply unit 3 is composed of a bottom wall 12 of the main body 1 and a partition wall 1.
4, a supply magazine mounting chamber 31 is formed between them and a supply mechanism 32 corresponding thereto is arranged. In the supply magazine 34 that is detachably mounted in the supply magazine mounting chamber 31, a lid 341 that covers the front half of the back surface and the front end is openably and closably attached, and a handle 342 is attached to the lid 341 and the front end surface is The delivery port 343 is formed, and the delivery port 34 is formed.
A tilt guide plate 344 is attached toward the position 3. Further, a large number of guide plates 345 are provided in parallel in a stepwise manner in the inner front half portion, the sheet bodies A are individually inserted between the guide plates 345, and locking members 346 are provided on both sides of the rear end portion. A take-out gap S is formed between the inserted sheet body A and the rear end wall 347. Further, a sheet body supply elongated hole 348 is formed in the rear half of the front surface side in the front-rear direction. The supply magazine installation room 31 is located on the rear wall 1 of the main body 1.
3, an insertion opening 131 is opened, supply magazine guiding members 142 are attached to both sides of the lower surface of the partition wall 14, and an operating long hole 141 is formed in the central portion. The supply mechanism 32 has guide rods 321 attached to the outer surfaces of both side walls 11 of the main body 1 in the front-rear direction, and a sliding member 322 attached thereto.
Is slidably fitted, and the sliding member 322 and the eccentric position of the rotary plate 211 attached to the supply rotary shaft 21 are connected by a connecting rod 323, and both slide members 322 are connected. 324 is installed. A supply body 325 is attached to the connecting plate 324 so as to penetrate through the operation long hole 141 formed in the partition wall 14 and project upward, and to move back and forth, and is parallel to the supply body 325. Link arm 32
6, 326 has one end pivotally attached and the other end having an actuating member 327.
And a feed mechanism 325.
A coil spring 329 is stretched between the projecting piece 328 standing on the upper surface of the link arm 326 and the link arm 326 to constantly urge the link arm 326 upward. In addition, the partition wall 14
A rotary electromagnetic clutch 330 is mounted on the top of the rotary electromagnetic clutch 330. A magnet and an operating arm 331 corresponding thereto are rotatably mounted inside the rotary electromagnetic clutch 330, and the tip of the operating arm 331 is projected forward from the operating member 327. It is arranged on the upper surface of the strip-shaped receiving piece 332 provided, and brought into contact with the coil spring 329 under tension. Then, the actuating arm 331 is urged to rotate counterclockwise by the excitation of the magnet, resisting the tension of the coil spring 329 and receiving piece 3
32 is pressed and the link arm 326 causes the operating member 3
Move 27 down. On the lower surface of the operating member 327, the hooking piece 33
3 is attached to the hooking piece 333, and an abutting portion 334 extending in the front-rear direction and a hooking hook 335 having a rear end bent forward are formed in the hooking piece 333. It is configured such that the rear end of the uppermost sheet body A of the sheet body A stored in is hooked and delivered.

The transport unit 4 has feed wheels 411 mounted on both sides of the sheet transport rotary shaft 22. A guide roller 412 is rotatably disposed between the both feed wheels 411, and the upper and lower portions of the feed wheel 411 and the front thereof are forwarded. Tension roller 413 for each part
The three feed belts 414 are loosely wound around the tension roller 413 and the guide roller 412 at intervals, and the back side of the sheet A is fed by the feed belt 414 and the front side is fed. By being held by the car 411, the feed belt 414 is in a tensioned state and the sheet body A
Is configured to be sent.

The image pickup section 5 has its substrate 51 placed on the upper portion of the main body 1 and a receiving roller 51 attached to the lower surface of the substrate 51.
2 is brought into contact with the cams 514 mounted on the front and rear substrate actuating rotary shafts 23, 24, and a projecting rod 513 also hung vertically on the lower surface of the substrate 51 is attached to a receiving member 515 projecting from the side wall 11 of the main body 1. The board 51 is slidably fitted and the lower end thereof is connected to the coil spring 516 so that the substrate 51 is always stretched downward. Further, a stopper 511 for stopping the sheet body A is provided at the rear end of the substrate 51 so as to project.

The storage section 6 is located in the upper part of the main body 1 behind the photographing section 5 and comprises a receiving magazine mounting chamber 62 into which a discharging mechanism 61 and a receiving magazine 63 can be detachably mounted.
The discharging mechanism 61 includes pulleys 611 mounted on both sides of the sheet discharging rotary shaft 25 and rollers 612 arranged behind the pulleys 611.
While the discharge belt 613 is wound between the above and the above, a sending roller 614 is arranged on the upper surface of the pulley 611, and a spring 615 constantly urges the pulley 611 to abut. Further, the rear portion of the substrate 51 is located between the pulleys 611, 611, and the stopper 511 is sent out by the upward movement of the substrate 51 to move the roller 614 upward against the tension of the sub ring 615 to be separated from the pulley 611. It Further, on the roller 612, the feeding roller 6 urged to always contact
16 are provided. Receive magazine installation room 62
Has a mounting opening 621 at the rear end of the main body 1, and the mounting chamber 62
An inverted L-shaped protruding piece 622 is provided upright on the front end, and a guide roller 623 is arranged on the upper portion. Receive magazine 6
3, a handle 631 is attached to the rear end, a door 632 that can be opened and closed is hinged to the upper half at the front end, and it is always closed by a spring. This door 632 projects from the receive magazine mounting chamber 62. It is opened by the piece 622. Further, a guide plate 633 for guiding the sheet body is attached from the upper surface of the front end toward the lower surface of the rear.

Further, a bucky mechanism 7 is attached to the main body 1. The bucky mechanism 7 meshes a gear 72 attached to the sheet supply rotary shaft 21 with a gear 73 in a gear box 74 attached to the main body 1, and the output shaft is directed rearward by a gear group in the gear box 74. The pin of the crank plate 75 attached to this is fitted into the vertically elongated hole of the operating piece 77 attached to the operating rod 76 slidably inserted between the both side walls 11 of the main body 1, and the operating rod 76 is attached. The connecting pieces 78 attached to both ends of the are attached to the bucky 71 arranged on the substrate 51 of the photographing unit 5. As a result, the rotation of the sheet supply rotary shaft 21 causes the gears 72, 73 to rotate.
The output shaft is rotated via the pin, and the eccentric rotational motion of the pin of the crank plate 75 attached to the output shaft causes the operating piece 77 fitted thereto to move the operating rod 76 left and right, and the bucky 71 attached to this. Is slightly reciprocated left and right on the substrate 51.

Next, the operation of the sheet body A of the image pickup apparatus having the above structure will be described. First, supply magazine 3
The lid portion 341 of No. 4 is opened, and the sheet bodies A are inserted between the guide plates 345 one by one. At that time, after inserting the back surface of the sheet body A, which is opposite to the photosensitive surface, to the upper surface side where the elongated hole 348 of the sub-line magazine 34 is formed, the lid portion 34 is inserted.
Close 1 Then, the supply magazine 34 loaded with the sheet A is mounted in the supply magazine mounting chamber 31 through the insertion opening 131 of the main body 1 with the long hole 348 facing upward. On the other hand, the receive magazine 63 is stored in the storage section 6 at the top of the main body 1.
The receiving magazine mounting chamber 62 is formed through the mounting opening 621, and the projecting piece 622 pushes the door 632 of the receiving magazine 63 open to set the sheet A. When the drive motor 26 is started after setting in this way, the drive mechanism 2 rotates each rotary shaft via the belt 27. As a result, in the supply unit 3, the rotary plate 211 of the rotary shaft 21 for sheet supply is rotated, and the sliding member 322 is reciprocated back and forth along the guide rod 321 by the connecting rod 323 connected to the eccentric position, and is attached thereto. The supply body 325 on the connecting plate 324 also moves back and forth in the operating long hole 141 of the partition wall 14. At the same time, the magnet of the rotary electromagnetic clutch 330 is excited to urge the operating arm 331 to rotate in a counterclockwise direction and press the receiving piece 332 abutting against the tip thereof downward. The receiving piece 332 is biased upward through the operating member 327 by the tension of the coil spring 329 attached to the link arm 326. However, since the pressing force of the operating arm 331 exceeds the tension of the coil spring 329, The operating member 327 is moved downward, and the hooking piece 333 attached to the lower surface of the operating member 327 is inserted into the take-out gap S of the supply magazine 34 through the sheet body supply long hole 348 of the supply magazine 34, The horizontal contact portion 334 of the hooking piece 333 contacts the upper surface of the uppermost sheet body A. When the supply body 325 moves forward in this state, the operating member 327 is pushed down by the operating arm 331.
Also, since the horizontal contact portion 334 of the hooking piece 333 slides on the uppermost sheet body A, the hooking piece 3 also moves forward.
The hook claw 335 of 33 is inserted between the sheet body A and the sheet body A of the next stage, sandwiches the rear end of the uppermost sheet body A, and integrally moves forward in the supply magazine 34. Then, the sheet body A is extruded to the transport unit 4. Then, the sheet bodies A are successively sent out to the conveying section 4 by the hooking pieces 333, but when the sheet bodies A in the supply magazine 34 are all sent out and the power is turned off, the magnet of the rotary electromagnetic clutch 330 is demagnetized, and the operating arm. Since the downward biasing force of 331 is lost, the coil spring 329
The action of the tension causes the operating arm 331 to move upward. Along with this, the hooking piece 333 ascends via the link arm 326 and separates from the elongated hole 348 of the supply magazine 34.
1 and can be replaced with a supply magazine 34 containing a new sheet A.
On the other hand, the catching piece 33 after the sheet body A is extruded to the conveying section 4
3 is a supply member 32 by rotation of the sheet supply rotating shaft 21.
5, the hook piece 333 moves to the rear side as the working arm 3 of the rotary electromagnetic clutch 330 moves.
By downwardly urging 31, the upper surface of the next sheet body A is slid and reliably returned to the rear end position, and the sheet body A is extruded again in the same manner as above. The sheet body A thus extruded is sandwiched between the feed wheels 411 and 411 on both sides which are rotated by the sheet conveying rotary shaft 22 and the tension roller 413 below, and at the same time, the feed belt 4 is pushed.
The front side of the sheet body A contacts the sheet 14 and is fed on the outer peripheral surface of the feed wheel 411. Since the tension of the feed belt 414 is applied to the tension roller 413, the sheet A is sandwiched between the feed wheel 411 and the feed belt 414 and half-rotated, so that the surface side of the sheet A which is the photosensitive surface is upward. To the next photographing section 5. By this feeding, the feeding belt 414 is in a tensioned state and the sheet A
When the sheet A is fed, the feeding belt 414 loosens again after returning the sheet A and returns to the normal position, so that the sheets A fed one after another are always accurate. It can be in a state in which it can be transferred to. The sheet body A sent to the photographing unit 5 is the substrate 51.
The substrate 51 moves upward, and at this time, the substrate 51 is rotated by the front and rear substrate actuating rotary shafts 23 and 24 so that the cam 514 attached thereto is
Against the tension of the coil spring 516, the receiving roller 5
12 is pushed up, the substrate 51 is moved upward, and the stopper 511 provided at the rear end projects against the tension of the spring 615 and pushes up the roller 614, so that a gap is formed between the pulley 611 and the pulley 611, and it is fed into this. The sheet body A thus abutted against the stopper 511, and the sheet body A can be accurately stopped at the photographing position of the photographing unit 5. As a result, when the radiation irradiating device irradiates the subject on the photographing unit 5 with radiation from above the photographing unit 5, a radiation image of the subject is recorded on the sheet A. At that time, the bucky mechanism 7 driven by the sheet supply rotary shaft 21 operates as described above, and the bucky 71 slightly moves to prevent the radiation from being scattered. When an image is recorded on the sheet A in this manner, the cam 51 is rotated along with the rotation of the substrate operating rotary shafts 23 and 24.
4 also rotates and moves the substrate 51 downward by the tension of the coil spring 516, so that the stopper 511 at the rear end
Is lowered, and the feeding roller 614 that has been pushed up moves downward by the tension of the spring 615. As a result, the sheet body A on the substrate 51 is sandwiched between the delivery roller 614 and the pulley 611, so that the sheet discharging rotary shaft 25
The sheet A is sent to the receive magazine 63 by the discharge belt 613 and the roller 614 wound around the pulley 611 rotated by the guide belt 633, and is reliably stored by the guide plate 633. In this way, when the sheet bodies A on which the images are recorded one after another and the images are recorded are stacked and stored in the receive magazine 63, the receive magazine 63 is pulled out from the receive magazine mounting chamber 62, and at the same time the receive magazine 63 is received. The opening portion of the door 632 is closed by a spring, and the inside of the receive magazine 63 is taken out in a light-shielded state. The receive magazine 63 is then photoelectrically read with the image information recorded by the image reading device, and is output as a visible image by an image reproducing device such as a laser printer or a CRT.

It should be noted that, instead of the photographing section of the above-mentioned embodiment, the processing section may detect an electric signal stored in the sheet body, or may be used in a detection device in which the electric signal is stored in the sheet body. .

[0013]

As described above in detail for the embodiments,
According to the present invention, the sheet member fed to the image capturing unit, which is the processing unit, is brought into contact with the stopper provided at the tip of the substrate so that the sheet member can be reliably stopped at the predetermined image capturing position even when it is fed at a high speed. It is a thing. Further, it is controlled so as to move up when the sheet body is fed to the substrate, whereby the stopper moves up the feeding roller which is always urged into contact with the discharging belt of the discharging mechanism. As a result, the discharging belt and the sending roller are separated from each other, so that the discharging action of the sheet body can be reliably prevented. Therefore, a large number of sheet bodies at high speed,
For example, it is possible to send out at a rate of 3 sheets per second, and it is possible to perform high-speed imaging of blood flow, which has been impossible in the past. In addition, the sheet body can be sent to the image capturing unit even if the image capturing unit is changed horizontally, vertically, or slanted according to the posture of the subject, and an excellent effect such as a quick image capturing process can be achieved. It is a thing.

[Brief description of drawings]

FIG. 1 is a vertical side view of the present invention.

FIG. 2 is a cross-sectional plan view of the present invention.

FIG. 3 is an enlarged partial cutaway perspective view of a photographing unit of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 14 Partition wall 141 Long hole for operation 2 Drive mechanism 23 Rotating shaft for operating substrate 24 Rotating shaft for operating substrate 25 Rotating shaft for ejecting sheet 3 Feeding unit 4 Conveying unit 5 Photographing unit 51 Substrate 511 Stopper 512 Receiving roller 513 Projecting rod 514 Cam 515 Receiver 516 Coil spring 6 Storage section 61 Discharging mechanism 611 Pulley 612 Roller 613 Discharging belt 614 Sending roller 615 Spring A Sheet body

Claims (1)

[Claims] 1. A sheet embedding portion is provided on a sheet feeding path, a substrate is provided in the sheet processing portion, the substrate is controlled to be movable up and down, and a stopper is provided at an end portion on the discharge portion side. Then, the delivery section is provided with a delivery roller so that the sheet body can be always delivered and delivered, and a stopper is used to move the delivery roller of the delivery section upward with the upward movement of the substrate so that the sheet body is ejected. A stopping mechanism for a sheet body, characterized in that the sheet body sent to the substrate is stopped and stopped at a processing section by a stopper.