JPH05323483A - Supplying mechanism for sheet body - Google Patents

Abstract

PURPOSE:To surely supply a sheet body, especially a photosensitive sheet body of an X-ray radiographing equipment for a medical use from a supplying cartridge. CONSTITUTION:A supplying cartridge 34 enclosing a sheet body A in layer built is attached to an under part of a main body 1 of a photographing device in freely attachably and detachably, a supplying body 325 moving back and forth is arranged to the main body 1 side confronted with the supplying cartridge 34 and an arm 331 is provided projectingly to the supplying body 325 rotatably upward and downward, and, at the same time, the arm 331 is energized to an under part, the rear end of the sheet body at highest order of the sheet body A enclosed in the supplying cartridge 34 is hooked with a hooking piece 333 attached to the top end of the arm so as to send out one by one with a high speed cycle to an upper part of a photographing part 5.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Conventionally, an X-ray film is generally used in a medical X-ray photographing apparatus, and the complicated work of developing and fixing is performed in a light-shielded state with great care so as not to be exposed to external light. Since it is carried out, 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 phosphor 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 from. This apparatus stores the photostimulable phosphor sheet in a supply magazine, takes out the sheets one by one with a suction plate and sends the sheets to a photographing unit, and the photographing unit irradiates the sheets 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 or the like. Further, this stimulable phosphor sheet can be repeatedly used.

[0003]

However, in the image recording apparatus disclosed by the above-mentioned known art, the suction plate mechanism is used as a means for taking out the stimulable phosphor sheets one by one from the supply magazine. However, it is mechanically impossible to send out a large number of sheets one after another in a short time. Therefore, 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 view of the above problems, the present invention has been made to solve the above problems, and provides a sheet body supply mechanism capable of reliably sending a large number of sheets one by one to a photographing unit at high speed. It is intended for.

[0004]

As a means for achieving this, according to the present invention, a supply magazine in which sheet bodies are stacked and accommodated is detachably attached to the lower part of the main body of the apparatus, and reciprocatingly driven to the main body side facing the supply magazine. A supply member for arranging is provided, an arm is provided so as to be rotatable up and down on the supply member, and the arm is biased downward, and is housed in the supply magazine by a hooking piece attached to the tip of the arm. The uppermost sheet body of the above-mentioned sheet body is hooked so that the sheets are delivered one by one.

[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 image capturing apparatus includes a supply unit 3, a transport unit 4, an image capturing unit 5, a storage unit 6, and a drive mechanism 2 that operates these units. In FIG. 1 of the drawings 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 substrate 51 of the photographing unit 5 with a space between them to move forward and backward. Substrate operating rotary shafts 23, 24 disposed 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. Further, between the driving motor 26 and the sheet conveying rotary shaft 22, between the sheet conveying 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 includes a bottom wall 12 and a partition wall 1 of the main body 1.
4, a supply magazine mounting chamber 31 is formed between them and a supply mechanism 32 corresponding thereto is arranged. As shown in FIG. 3, the supply magazine 34 that is detachably mounted in the supply magazine mounting chamber 31 has a lid 341 that covers the front half of the back surface and the front end of the supply magazine 34 so that the lid 341 can be opened and closed. A handle 342 is attached to the lid 341. It is attached and forms a delivery port 343 on the front end face, and an inclined guide plate 344 is attached toward the delivery port 343. 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. The inserted sheet A and the rear end wall 34
A take-out space S is formed between the space and Further, in the rear half of the front surface side, a sheet body supply long hole 348 is formed in the front-back direction.
Has been drilled. In the supply magazine mounting chamber 31, the insertion opening 131 is opened in the rear wall 13 of the main body 1, and the supply magazine guiding member 14 is provided on both sides of the lower surface of the partition wall 14.
2 is attached, 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 sliding members 322 slidably fitted therein, and the sliding members 322 and the supply rotary shaft 21. The eccentric position of the rotating plate 211 attached to the above is connected by a connecting rod 323, and a connecting plate 324 is installed on both sliding members 322. 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 to project upward and to be movable back and forth, and is parallel to the supply body 325. One end of the link arms 326, 326 is pivotally attached and the other end is pivotally attached to the actuating member 327 to form a link mechanism.
A coil spring 329 is stretched between a projecting piece 328 standing on the upper surface of the supply body 325 and the link arm 326 to constantly urge the link arm 326 upward. Further, a rotary electromagnetic clutch 330 is mounted on the partition wall 14, a magnet and an operating arm 331 corresponding thereto are rotatably mounted inside the rotary electromagnetic clutch 330, and a tip of the operating arm 331 is attached to the operating member. Three
It is arranged on the upper surface of a strip-shaped receiving piece 332 projecting forward from 27 and brought into a contact state by the tension of the coil spring 329. Then, the actuating arm 331 is urged to rotate counterclockwise by the excitation of the magnet, the receiving piece 332 is pressed against the tension of the coil spring 329, and the actuating member 327 is moved downward by the link arm 326. A hooking piece 333 is attached to the lower surface of the operating member 327, and an abutting portion 334 extending in the front-rear direction and a rear end of the hooking piece 333 are bent forward to form a hooking hook 335. Hook piece 3
33 is configured so that the rear end of the uppermost sheet body A of the sheet bodies A stored in the supply magazine 34 is hooked and delivered.

The transport unit 4 has feed wheels 411 attached to both sides of the sheet transport rotary shaft 22. A guide roller 412 is rotatably disposed between the 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 becomes in a tensioned state and the sheet body A
Is configured to be sent.

The photographing section 5 has a substrate 51 arranged 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, at the rear end of the substrate 51, a stopper 511 for stopping the sheet A is projected.

The storage unit 6 is located at the rear of the photographing unit 5 at the upper part of the main body 1 and comprises a receiving magazine mounting chamber 62 into which the discharging mechanism 61 and the receiving magazine 63 can be removably 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.
The discharge belt 613 is wound between the above and the feeding roller 614 is provided on the upper surface of the pulley 611, and the pulley 611 is constantly urged by the spring 615 so as to be in contact with the pulley 611. A rear portion of the base plate 51 is located between the pulleys 611 and 611, and the stopper 511 is sent by the upward movement of the base plate 51 to move the roller 614 upward against the tension of the spring 615 and 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 on 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. In addition, 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 end.

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 a gear group in the gear box 74 causes the output shaft to face rearward. The pin of the crank plate 75, which is protruded and attached thereto, is fitted into the vertically long hole of the operation piece 77 attached to the operation rod 76 slidably inserted between the both side walls 11 of the main body 1, and the operation 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 gears 72, 73 are rotated by the rotation of the sheet supplying rotary shaft 21.
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 thereto. Is slightly reciprocated left and right on the substrate 51.

Next, the supply operation of the sheet A having the above structure will be described. First, the lid 341 of the supply magazine 34 is opened, and the sheet bodies A are inserted between the guide plates 345 one by one. At that time, the back surface of the sheet body A opposite to the photosensitive surface is inserted so as to be the upper surface side of the supply magazine 34 in which the elongated hole 348 is formed, and then the lid portion 341 is closed. Then, the supply magazine 34 loaded with the sheet A is mounted from the insertion opening 131 of the main body 1 into the supply magazine mounting chamber 31 with the long hole 348 facing upward. On the other hand, the receiving magazine 63 is attached to the receiving opening 621 of the receiving magazine mounting chamber 62 formed in the storage portion 6 in the upper portion of the main body 1.
Insert more, and receive piece 6 by projecting piece 622
The door 632 of No. 3 is pushed open and the sheet A is set so as to be collected. After setting in this way, drive motor 2
When 6 is started, 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 sheet supply rotary shaft 21 rotates, and the sliding member 322 is connected to the guide rod 32 by the connecting rod 323 connected to the eccentric position.
Reciprocating back and forth along 1 and connecting plate 3 attached to it
The supply member 325 on the 24 also has an operating long hole 141 of the partition wall 14.
Move back and forth. At the same time, the rotary electromagnetic clutch 3
The magnet 30 energizes to rotate the actuating arm 331 in a counterclockwise direction, contacting the tip of the receiving piece 33.
Press 2 downwards. The receiving piece 332 is the link arm 3
Although the tension of the coil spring 329 attached to the coil 26 urges upward through the actuating member 327, the pressing force of the actuating arm 331 exceeds the tension of the coil spring 329, so that the actuating member 327 is moved downward. , The actuating member 32
The hook 333 attached to the bottom surface of 7 is the supply magazine 3
4 through the sheet body supply long hole 348, and is inserted into the take-out gap S of the supply magazine 34, and the hooking piece 333.
The horizontal abutting portion 334 abuts on the upper surface of the uppermost sheet body A. When the supply body 325 moves forward in this state, the actuating member 327 in the pushing down state by the actuating arm 331 also moves forward, so that the horizontal contact portion 334 of the hooking piece 333 also slides on the uppermost sheet A. , The hook 335 of the hooking piece 333 is inserted between the sheet body A and the next-stage sheet body A, sandwiches the rear end of the uppermost sheet body A, and integrally moves forward in the supply magazine 34. Then, the sheet A is pushed out to the conveyance section 4. The hooking piece 333 after the sheet body A is extruded to the conveying section 4 moves rearward as the supply body 325 is returned by the rotation of the sheet supply rotating shaft 21, while the hooking piece 333 of the rotary electromagnetic clutch 330 is moved. By downwardly urging the operation arm 331, the upper surface of the next sheet body A is slid and surely returned to the rear end position, and the sheet body A is pushed again in the same manner as above. Then, the sheet bodies A are successively transferred by the catching piece 333 to the conveying section 4
However, when the sheet A in the supply magazine 34 is completely sent out and the power is turned off, the magnet of the rotary electromagnetic clutch 330 is demagnetized and the operating arm 3
Since the downward biasing force of 31 is eliminated, the tension of the coil spring 329 causes the operating arm 331 to move upward.
Accordingly, the hooking piece 333 is inserted through the link arm 326.
Rises and separates from the long hole 348 of the supply magazine 34, so that the supply magazine 34 can be pulled out from the supply magazine mounting chamber 31, and can be exchanged with the supply magazine 34 containing a new sheet A. On the other hand, 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 on the lower side, and at the same time, the feed belt is fed. The front surface side of the sheet body A comes into contact with 414 and is fed on the outer peripheral surface of the feed wheel 411. The feed belt 414 is in a tensioned state due to the tension applied to the tension roller 413. Therefore, the sheet body A is sandwiched between the feed wheel 411 and the feed belt 414 and half-rotated, and the surface side of the sheet body A which is the photosensitive surface is upward. To the next photographing section 5. Due to this feeding, when the feed belt 414 is fed in a tensioned state, a deviation may occur in the left-right direction, but when the feed of the sheet body A is completed, the feed belt 414 loosens again,
Since the sheet body A is returned to the normal position, the sheet bodies A fed one after another can be always brought into a state where it can be accurately conveyed. The sheet body A sent to the image capturing unit 5 advances on the substrate 51. At this time, the substrate 51 is the front and rear rotating shafts 2 for operating the substrate.
Due to the rotation of Nos. 3 and 24, the cam 514 attached thereto resists the tension of the coil spring 516 and receives the receiving roller 51.
2 is pushed up and the substrate 51 is moved upward, and the stopper 511 provided at the rear end thereof pushes out the roller 614 against the tension of the spring 615, and thus pushes up the roller 614, so that a gap is formed between it and the pulley 611, and it is sent in. 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 irradiation device irradiates the subject on the photographing unit 5 with radiation from above the photographing unit 5, a radiation image of the subject is displayed on the sheet A.
Recorded in. At that time, the bucky mechanism 7 driven by the sheet supply rotating shaft 21 operates as described above,
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 514 is rotated along with the rotation of the substrate operating rotary shafts 23 and 24, and the tension of the coil spring 516 causes the substrate 5 to move.
1, the stopper 511 at the rear end is lowered, and the feeding roller 614 pushed up is moved downward by the tension of the spring 615. This allows the substrate 51
The upper sheet body A is the delivery roller 614 and the pulley 61.
The sheet body 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 sheet discharge rotating shaft 25, and is securely held by the guide plate 633. It is stored. In this way, the sheet body A on which the images are recorded by the image capturing unit 5 one after another is recorded on the receive magazine 6
When the stacked magazines are completely stored in the receiver 3, the receive magazine 63 is pulled out from the receive magazine mounting chamber 62, the opening of the door 632 of the receive magazine 63 is closed by a spring, and the inside of the receive magazine 63 is shielded from light. To be done. Thereafter, the image information recorded by the image reading device is photoelectrically read in the receive magazine 63, and is output as a visible image by an image reproducing device such as a laser printer or a CRT.

[0012]

As described above in detail for the embodiments,
According to the present invention, when the sheet body is sent out from the supply magazine, the hooking piece at the lower end of the arm attached to the supply body that reciprocates back and forth operates in a downwardly biased state to hook the rear end of the sheet body, By separating the uppermost sheet body and the next sheet body, only the uppermost sheet body can be surely sent out, and since it is hooked by the hooking pieces, a large number of sheet bodies at a high speed, for example, It is possible to deliver at a rate of 3 sheets per second, and it is possible to achieve an excellent effect such as enabling high-speed imaging of blood flow, which has been impossible in the past.

[Brief description of drawings]

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

FIG. 2 is a transverse plan view of the present invention.

FIG. 3 is an enlarged partially cutaway perspective view of the supply 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 21 rotary shaft for sheet supply 211 rotary plate 3 supply part 31 supply magazine mounting chamber 32 supply mechanism 321 guide rod 322 sliding member 323 connecting rod 324 connecting plate 325 supply body 326 Link arm 327 Actuating member 329 Coil spring 330 Rotary electromagnetic clutch 331 Actuating arm 332 Receiving piece 333 Hooking piece 334 Horizontal abutting part 335 Hooking claw 34 Supply magazine 343 Feeding port 345 Guide plate 348 Supply slot 4 Conveying part 5 Shooting part 6 Storage section A Sheet body S Gap

Claims (1)

[Claims] 1. A supply magazine in which sheets are stacked and stored is detachably attached to a lower portion of an apparatus main body, and a reciprocating drive supply unit is provided on a main body side facing the supply magazine.
An arm is provided so as to be rotatable up and down on the supply body, the arm is biased downward, and a hooking piece attached to the tip of the arm is the uppermost sheet of the sheet body stored in the supply magazine. A sheet feeding mechanism characterized in that the rear end of the body is hooked and fed one by one.