JPH0723790Y2 - X-ray image recording medium ejecting mechanism for cassette radiography stand - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a mechanism for taking out an X-ray image recording medium such as a film for a cassette radiographic stand or a stimulable phosphor sheet, and has a particularly simple structure. The present invention relates to a mechanism suitable for downsizing the entire mechanism.

[Conventional technology]

In the conventional X-ray image recording medium take-out mechanism for a cassette radiographic imaging stand, the take-out operation of the X-ray image recording medium from the film storage box by the rubber pad arranged in parallel with the rubber pad supporting member is performed in the horizontal and vertical directions. Different cam means are used for each operation, and each cam means is provided with a shaft or a link for transmitting the operation.
(See, for example, Japanese Patent Application No. 57-38111) [Problems to be solved by the invention] In the conventional X-ray image recording medium ejecting mechanism for a cassette-less fluoroscopic imaging stand, a film or a stimulable phosphor sheet is used. A means for performing an operation of taking out an X-ray image recording medium (hereinafter simply referred to as a film, etc.) is used to lift a film or the like adsorbed by a rubber pad from a film storage box upward, and lower the rubber pad to adsorb the film in the vertical direction. Elevating means, means for laterally moving the sucked and lifted film or the like to the conveying means for the next process, and different means for each operation were provided. Therefore, there is a problem that the number of parts is large and the size of the entire mechanism is inevitably large.
Since each of the above-mentioned means uses a cam, and each cam is provided with an axis and a link, it is necessary to make an adjustment for synchronizing the operating positions of the cam systems, and it takes a long time to make the adjustment. There was a problem such as a cost.

In view of the above-mentioned problems of the prior art, the present invention is an X-ray image for a cassette radiographic imaging stand, which has a simple structure for downsizing a film or the like and is small in size, and whose operation can be easily adjusted in a short time. An object is to provide a recording medium ejecting mechanism.

[Means for Solving the Problems]

In order to achieve the above object, a film take-out mechanism for a cassette telescopic imaging stand of the present invention has a side plate provided with a notch on the side of the film storage box and a predetermined turning radius on the side plate. A rotatably provided link, a rubber pad support member having an arm that supports the rubber pad and extends substantially parallel to the suction surface of the rubber pad and extends in the longitudinal direction of the pad, the distal end of the link, and the arm. A connecting member that rotatably connects the tip end of the rubber pad supporting member and a member that supports the rubber pad supporting member and moves along the notch of the shape are provided.

In addition, a notch formed in the side plate is formed such that a horizontal portion and a vertical portion of the notch are substantially perpendicular to each other and a lower portion of the vertical portion is provided with a suction surface of a rubber pad at the time of suction of an X-ray image recording medium. It is preferable to form an inclined portion for keeping the posture at right angles to the surface of the X-ray image recording medium.

[Action]

For example, when the member is rotated counterclockwise (approximately 1/4 rotation), the member forms a parallel link together with an arm of the rubber pad supporting member and a link provided on the side plate. As a result, the rubber pad supporting member descends along the notch formed in the side plate while maintaining the posture of the rubber pad in a substantially vertical state by the parallel link and the notch of the shape, and the rubber pad is moved to the film in the film storage box or the like. Press on. The film or the like is adsorbed by stopping the rotation operation while pressing the film or the like and applying a negative pressure to the rubber pad. When a film or the like is adsorbed, the member is rotated in the clockwise direction opposite to the above while maintaining the adsorbed state. By the rotation of the member, the rubber pad supporting member rises along the notch formed in the side plate, and further moves the notch in the lateral direction, for example, to the right.
Also in this case, the posture of the rubber pad is kept vertical to the surface of the film or the like due to the shape of the parallel link and the notch. When the notch of the above shape is further moved rightward, the film or the like adsorbed on the rubber pad is attached to the pair of rollers for conveying the film or the like. Here, the rotation of the member is stopped to stop the lateral movement of the film or the like, and at the same time, the negative pressure on the rubber pad is stopped to release the suction of the film or the like. The film or the like from which the suction has been released is sent to the next step by a roller for conveying the film or the like, and the taking out of one film or the like is completed. Subsequently, the member is rotated in the counterclockwise direction, and by repeating the above operation, the film or the like in the film storage box is continuously taken out.

In addition, by forming an inclined portion at the lower part of the vertical portion of the notch of the shape to keep the posture of the adsorption surface of the rubber pad at a right angle to the surface of the film when adsorbing the film, the parallel link is formed in the inclined portion. As a result, a more accurate parallel link operation is performed, so that the posture of the rubber pad can be reliably kept vertical to the surface of the film or the like even when the film or the like in the film storage box is reduced.

〔Example〕

An embodiment will be described with reference to FIGS. 1 to 6. In the figure, reference numeral 1 denotes a rubber pad for adsorbing the films 3 stacked and stored in the film storage box 2 one by one by negative pressure. The negative pressure to the rubber pad 1 is applied through a hose 4 by an air control device (not shown). Reference numeral 5 denotes a rubber pad support member that supports a plurality of rubber pads 1 arranged in a row (three in this embodiment) in parallel, and a shaft that rotatably supports the rubber pad support member 5 at both ends of the rubber pad support member 5. 5a is projected. Reference numerals 6 and 7 denote side plates provided opposite to the sides of the film storage box 2 having the same outer shape and size for supporting the shafts 5a projecting from both ends of the rubber pad support member 5 via the bearings 8, and are illustrated. No cassettet is fixed to the body formed as a dark box on the fluoroscopy stand. The bearing 8 has a notch 9 formed at one end of the side plates 6 and 7.
Is fitted slidably along the notch 9. Reference numeral 10 denotes a shaft that is rotatably supported by bearings 11 near the notches 9 in the shape of side plates 6 and 7. One end of the shaft 10 is fixed to both ends of the shaft 10 and the other end is long. A member 12 with an elongated hole provided with a hole 12a is attached. A bearing 13 is fitted in the long hole 12a, and a shaft 5a fitted in the notch 9 of the shape is fitted in the bearing 13. The pair of members 12 are provided along the surfaces of the side plates 6 and 7, and when the shaft 10 is rotated (specifically, about 90 ° swing), the bearing 13 is slid along the slot 12a. While moving, the shaft 5a is slid along with the bearing 8 along the notch 9 of the shape. Reference numeral 5b denotes an arm attached to one end side (the side plate 6 side in the present embodiment) of the rubber pad supporting member 5 in parallel with the side plate 6, and the connecting member 5c is fixed to the end of the arm 5b. 6a is a short shaft fixed to the side plate 6, and is provided near the position of the connecting member 5c. Reference numeral 14 is a link rotatably provided on the side plate 6 with a predetermined turning radius. The link 14 is a connecting member 5c.
Is connected to the shaft 6a via a bearing 16, and the shaft 6a is connected to the shaft 6a via a bearing 16. Further, the link 14 forms a parallel link with the member 12 having the long hole through the arm 5b. 17 is the 1 of axis 10
A sprocket wheel fixed to the end is connected to a drive device (not shown) via a chain. The notch 9 having the above-described shape has a substantially right angle shape as shown in FIG. 6, and is formed by combining the lateral direction portion 9a and the longitudinal direction portion 9b. Then, it is preferable to form an inclined portion 9c below the vertical portion 9b to keep the posture of the suction surface of the rubber pad 1 at the time of suction of the film 3 at a right angle to the film surface. The inclined portion 9c has a long hole when rotated about the axis O ₁ of the shaft 10 which is the center of rotation of the member 12 with a radius L _C of the same dimension as the link 14.
The shaft 5a is loosely fitted to the bearing 12 through the bearing 13 and has a shape similar to the arc R drawn by the center of the shaft. The inclined portion 9c of this approximate shape has a tangent to the arc R at the lower portion of the longitudinal portion 9b. Direction hole, and is formed to be slightly inclined with respect to the vertical direction. Reference numeral 18 denotes a pair of film-conveying rollers that convey the film 3 adsorbed on the rubber pad 1 to the next step.

Now, when the sprocket wheel 17 is rotated counterclockwise in the state shown in FIG. 1, the shaft 10 and the member 12 integrated with the sprocket wheel 17 are rotated together, and the bearing 1 is inserted in the slot 12a.
The shaft 5a fitted through 3 descends along the notch 9 of the shape while moving in the slot 12a. Although this lowering depends on the amount of the film 3 in the film storage box 2, it lowers to the vicinity of the lower end of the notch 9 having a substantially shape and presses the rubber pad 1 onto the film 3. The rotation operation is stopped while the film 3 is pressed, and a negative pressure is applied to the rubber pad 1 via the hose 4 to adsorb the film 3. When the sprocket wheel 17 is rotated clockwise while adsorbing the film 3 while keeping that state, the shaft 5a ascends along the notch 9 of the shape together with the member 12 while moving in the slot 12a, and further in the lateral direction. Part 9a
Move to the right along. By this movement, when the shaft 5a reaches almost the end of the lateral portion 9a, the film 3 adsorbed on the rubber pad 1 is clamped by the pair of rollers 18 as shown in FIG. The movement and the negative pressure applied to the rubber pad 1 are stopped, and the adsorption of the film 3 is released. The film 3 attached to the roller 18 by releasing the suction
Is conveyed to the next step by the rotation of the roller 18, and the taking-out of one film 3 is completed. To take out the film 3 continuously, the sprocket wheel 17 may be rotated counterclockwise and the above-described operation may be repeated, whereby the film 3 in the film storage box 2 can be taken out continuously.

The operation of the parallel link from the suction of the film 3 to the release of the suction will be described more specifically with reference to FIG. Code A,
B and C are arms 5b, links 14 and members 12 forming a parallel link.
, And O ₁ is the link B (member
12) is the center of rotation, and O ₂ is the center of rotation of the link C (link 14). L _A is the length of link A, L _B is the length of link B, L _C
Is the length of the link C and L _B = L _C. I, II, III, IV are the points on the arc where the intersections of links A and B rotate, and 1,2,3,4 are the intersections of links A and C corresponding to points I, II, III, IV. (Axis 5a
(Center of) is a point on the movement line. First, in the case of descending the notch 9 for adsorbing the film 3 from the state of A ₃ , B ₃ , C ₃ where the intersection of the links A and C is at the position ₃ , the point 3 is a long hole. While moving toward the center O _{1 in} 12a, it descends almost vertically and reaches point 2. When the number of films 3 in the film storage box 2 is large, the suction operation is performed from around this, so that the film suction surface of the rubber pad 1 is perpendicular to the surface of the film 3 to prevent air from leaking from the suction surface. There is a need to. On the other hand, even if the number of films 3 is reduced, the suction surface and the surface of the film 3 must be kept in a vertical state. Due to this requirement, links A and C from point 2
Radius around substantially a notch shape for up to one point which is lowermost end, the O ₁ as described in the FIG. 6 at the intersection of the
If the inclined portion 9c having a shape similar to the arc R drawn by L _C is formed, the state between the points 1 and 2 of the link A is almost horizontal from A ₁ to A ₂ as shown in the figure. Can be maintained, and accordingly, the posture of the rubber pad 1 becomes a more correct vertical state, and the film suction surface and the film surface can be kept vertical. When the film 3 is adsorbed by the rubber pad 1 in the vertical state between the point 1 and the point 2, the rotation direction of the shaft 10 is changed and the position of the intersection of the links A and C turns upward and moves on the arc R. In this case, if there is no notch 9 in the shape, each link A, B, C proceeds on the arc R as it is, and becomes the state of B ₃ ′, A ₃ ′, C ₃ ′ at the point 3 ′, for example. Since there is a notch 9 in the direction of the circular arc R, after going through the inclined portion 9c from the point 1 to the point 2 it rises vertically along the vertical direction portion 9b and hits the intersection with the horizontal direction portion 9a. Reach 3. Point 3
The link states B ₃ , A ₃ and C ₃ in FIG. ₃ are drawn as if the link C was elongated in the figure.
It shows a state in which the position of the shaft 5a fitted in a has moved to the end in the elongated hole 12a, and the dimension between the shaft 5a and the rotation center O ₁ has become longer. The position of the point 3 further advances along the lateral direction portion 9a, and the state of the link is a point where the film 3 adsorbed to the rubber pad 1 is attached to the roller 18, B ₄ , A of the point 4.
_When the state becomes ₄ , C ₄ , the movement of the parallel link is stopped and the suction of the film is released. A ₄ of link A in Fig. 5
In this state, the film 3 is held substantially horizontal because it is along the horizontal portion 9a provided horizontally, and the film 3 is held by the roller 18 in the horizontal state. However, due to the arrangement of the roller 18, the film 3 needs to be held in the horizontal state. If not, it is not necessary to keep link A horizontal like A _{4 in} the figure. In such a case, the lateral portion 9a is formed as a notch having a slope corresponding to the angle at which the film 3 is attached to the roller 18. By repeating the above operation, the films can be continuously taken out one by one.

As can be seen from the above-described embodiments, the configuration of the present invention has a simple shape and arrangement of each component and has a small number of components.
As shown in FIG. 1, the entire film take-out mechanism can be miniaturized so as to fit within the size of the side plate 6, so that the film take-out mechanisms having the same structure can be stacked in the vertical direction. The number of films that can be continuously handled by the low-resolution fluoroscopic imaging table can be doubled as compared with the conventional one, and since there is no adjustment portion for synchronizing the operation position, the operation adjustment is easy.

Although the above embodiment describes the case of taking out the film, it goes without saying that the same can be done when taking out another X-ray image recording medium.

[Effect of device]

Since the present invention is configured as described above, it has the effects described below.

Since the parts constituting the X-ray image recording medium ejecting mechanism have a simple shape and the number of parts is reduced, the entire mechanism can be simplified and miniaturized. Adjustment becomes easier and can be performed in a shorter time than in the past.

In addition, the vertical position of the rubber pad can be maintained more correctly by forming the lower part of the vertical part of the notch formed on the side plate into a shape that approximates the arc drawn by the member with the long hole As a result, the X-ray image recording medium having a reduced number of sheets can be reliably attracted by the rubber pad.

[Brief description of drawings]

Each of the drawings is an illustration of one embodiment of the present invention. FIG. 1 is a side view of the film take-out mechanism, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a view taken along the line III-III of FIG. Fig. 4 is a sectional view taken along line IV-IV in Fig. 3, Fig. 5 is an explanatory view of the operation of the parallel link from film suction to release of film, and Fig. 6 is a detailed view of the shape of the notch. . 1 ... rubber pad, 2 ... film storage box, 3 ... film, 5 ... rubber pad support member, 5a ... axis, 5b ... arm, 5c ... connecting member, 6,7 ... side plate, 9 ... Notch, 10 …… shaft, 12 …… member, 12a …… oblong hole, 14 …… link, 17 …… sprocket wheel.

Claims (2)

[Scope of utility model registration request] 1. An X-ray image recording medium take-out mechanism for a cassette telescopic imaging stand, wherein the X-ray image recording mediums stacked and stored in a film storage box are adsorbed and taken out one by one by the vertical and forward / backward movement of a rubber pad. A side plate provided with a shape cutout on the side of the film storage box, a link rotatably provided on the side plate with a predetermined turning radius, and a rubber plate supporting the rubber pad and being substantially attached to the suction surface of the rubber pad. A rubber pad support member having arms extending parallel to each other in the longitudinal direction of the pad, a connecting member rotatably connecting the tip end portion of the link and the tip end portion of the arm, and supporting the rubber pad support member. An X-ray image recording medium ejecting mechanism for a cassette-less fluoroscopic imaging table, which is provided with a member that moves along the notch of the above shape. 2. A notch formed in the side plate is formed such that a lateral portion and a longitudinal portion of the notch are substantially perpendicular to each other, and a rubber pad for adsorbing an X-ray image recording medium is provided at a lower portion of the longitudinal portion. 2. An X-ray image recording medium ejecting mechanism for a cassette radiographic imaging stand according to claim 1, wherein an inclined portion is formed to keep the posture of the suction surface at a right angle to the surface of the X-ray image recording medium.