JPS6122810Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an apparatus for opening a packaging bag in which X-ray film for, for example, dental X-ray photography is sealed.

[Conventional technology]

In general, in dental treatment, X-ray photography is widely used to accurately determine the condition of the affected area, and this X-ray photography is extremely convenient as it allows for appropriate treatment that corresponds to the condition of the affected area. It is something. X used here
Linear film (hereinafter simply referred to as "film")
is sealed in a packaging bag made of a resin sheet that transmits X-rays so that it can be photographed as is.

Usually, in this packaging bag, the packaging material sheets are stacked or folded into a rectangular shape that is sized to match the shape of the film, and the overlapping edges of the sheets are sealed to form a sealed edge. A film is sealed and packaged inside.

The film packaged in this manner is convenient because it can be photographed as is, but it is necessary to develop the film directly after photographing.

For this reason, in the past, the packaging bag was opened manually in a dark bag and the film was taken out for development, or the developer was injected into the packaging bag with a syringe and developed. ing.

[Problem that the invention attempts to solve]

However, the conventional technology has the following problems. That is, in the method of opening a packaging bag using a dark bag, the two sheets of a rectangular packaging bag are arranged so that they protrude outward from the edge of the tear seal on the center of the three sealed sides of the rectangular packaging bag. A tearing tongue piece integrated with the sheet material is provided, and by peeling these pieces off from each other, the tear-seal edge is torn.Furthermore, by tearing off the seal edge that follows this tear-seal edge, the packaging bag can be opened. Although attempts are made to open the bag, in practice, the opening process must be done inside a dark bag, which is a tedious process, and it is inconvenient that a considerable amount of force is required to open the bag. Furthermore, if there are a large number of films to be opened and processed manually, high processing efficiency cannot be obtained.

On the other hand, in the method using a syringe, the developer must be injected into the packaging bag of each film, which is not practical when a large number of films are to be processed.

From the above points of view, there is a demand for the development of a device that can mechanically and highly efficiently unseal film packaging bags after photography, but to date no practical device has been proposed. Not yet.

[Purpose of invention]

The present invention was developed based on the above-mentioned circumstances, and it is an object of the present invention to provide an opening device that can mechanically and reliably open a film packaging bag.

[Means to solve problems]

The unsealing processing device of the present invention is made up of rectangular resin sheets stacked one on top of the other to form a seal edge around the periphery, and the resin sheets are arranged so as to extend outward from the tear seal edge around the center of the three sealed sides. An apparatus for opening an X-ray film packaged in a packaging bag in which a total of two tearing tongues are integrally formed and one tearing tongue protrudes beyond the other tearing tongue. , a pair of rotating arms that are rotatably provided at their lower ends around horizontal axes parallel to each other so that their upper ends open apart from each other at positions adjacent to each other; A first rotating support and a second rotating support are provided, and an X-ray film to be processed is placed between the first rotating support and the second rotating support in a state where the first rotating support and the second rotating support are close to each other, a mechanism for holding the packaging bag in a position where the tearing tongue piece is located at the lower end; and a mechanism for holding the packaging bag in a position where the tearing tongue piece is located at the lower end, and the one tearing tongue piece of the held X-ray film packaging bag is provided on the first rotating support. a first clamping mechanism having a gripping claw that moves obliquely upward so as to scoop it from the inner surface thereof and grips one of the tearing tongues in an outwardly bent state; The held X
A second gripping claw that moves obliquely upward to scoop up the other tearing tongue of the wire film packaging bag from the inner surface thereof and grips the other tearing tongue in an outwardly bent state. a clamping mechanism and associated pivoting arms for separating the first pivoting support and the second pivoting support from each other while the first clamping mechanism and the second clamping mechanism grip the tearing tongue; and an opening operation mechanism for opening the packaging bag by rotating the packaging bag through the tearing tongue of the packaging bag, thereby splitting the tear seal edge through the tearing tongue of the packaging bag, and then peeling off the seal edge that follows. It is characterized by:

According to this configuration, it is possible to mechanically and reliably unseal the inserted film packaging bag after photographing, and therefore, the unsealing process can be accomplished with high efficiency.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a packaged dental film that is opened by the apparatus of the present invention. This film packaging bag 1 has two approximately rectangular X-ray transparent resin sheets stacked on top of each other, a seal edge is formed around the entire periphery, and a film (not shown) is sealed inside. . This packaging bag 1 has a first tearing tongue piece 101 and a second tearing tongue piece 102, each integral with two resin sheets, so as to protrude outward from a tearable seal edge 100 on one short side of the rectangle. have,
The central portion of the first tearing tongue 101 further protrudes beyond the second tearing tongue 102.

The basic operating principle of the opening device according to the present invention is explained in the second section.
To explain this device schematically, as shown in FIG.
A first clamping mechanism 2 acts on the first tearing tongue piece 101 of the film packaging bag 1 which is held at the processing position with the film packaging bag 2 at the lowest end;
The second clamp mechanism 3 acts on the tearing tongue piece 102 of the packaging bag, and the first clamp mechanism 2 and the second clamp mechanism 3 are connected to each other while gripping the tearing tongue piece of the packaging bag. It has an expansion mechanism (not shown) that expands them apart.

That is, the first clamp mechanism 2 has a fixed receiver 2b located close to the outside of the first tearing tongue piece 101.
For example, the first cleaving tongue piece 1 is centered around the fulcrum P.
It consists of a first rotating gripping claw 2a that is rotated in the direction of the arrow along an arc R1 passing through a portion protruding from the second tearing tongue piece 102 in 01. By being moved, the first tearing tongue piece 101 is scooped up and further moved, and the first tearing tongue piece 101 is moved outward between it and the fixed receiver 2b as shown in FIG. Grip it in the open position. Further, the second clamp mechanism 3 has a fixed receiver 3b located close to the outside of the second tearing tongue piece 102, and an arc R2 that is centered on the fulcrum Q and passes through the second tearing tongue piece 102, for example. the second which is rotated in the direction of the arrow along
It consists of a rotating gripping claw 3a, and a second rotating gripping claw 3a.
is rotated to open the second tearing tongue piece 102
After scooping up the second tearing tongue piece 102, the second tearing tongue piece 102 is held in an outwardly open state between the second tearing tongue piece 102 and the fixed receiver 3b, as shown in FIG. 2B.

Then, while the tearing tongues 101 and 102 are being held by the first clamp mechanism 2 and the second clamp mechanism 3, the first clamp mechanism 2 and the second clamp mechanism are moved as shown in FIG. The tearing tongue piece 101 and the second tearing tongue piece 1
02 to split the tearable seal edge 100, and further tear off the seal edge following this tearable seal edge 100, whereby the packaging bag 1 is opened downward.

3 and 4 are a front view and a plan view, respectively, showing essential parts of an opening device according to an embodiment of the present invention. In the figure, 71 and 71' are a first rotation support and a second rotation support, respectively. The front plate 711 and the rear plate 71 face each other (the lower side is the front) and are integrally connected to each other.
2, and the second pivot support 71' has a front plate 711' and a rear plate 712' configured in the same manner as in the first pivot support 71. These first rotation support 71 and second rotation support 71'
are fixed to the upper ends of rotating arm plates 73 and 73', respectively, which extend upward in the illustrated state. These rotating arm plates 73 and 73' are
The lower ends of each are fixed to horizontal pivot shafts 76 and 76' rotatably provided on a vertical support plate 75 fixed to the bottom plate of the outer casing 8, and the upper ends of the first The movable support 71 and the second rotary support 71' are rotatably provided so as to expand laterally in a vertical plane. Incidentally, interlocking gears 72 and 72' that mesh with each other and constitute an expansion operation mechanism 7, which will be described later, are fixed to the rotation shafts 76 and 76', respectively.

3 and 4 show the device in an inoperative state, in which the first pivot support 71 and the second pivot support 71' are connected to a tension spring 77, which will be described later. Due to the action of the front plate 71
1 and 711' and the rear plate 71
2 and 712' are in a closed state with their inner edges abutting each other. A thick guide support plate 4 is fixed between the front plate 711 and the rear plate 712 of the first rotation support 71 so as to extend in the front and back direction at a position close to their inner edges, and similarly, a second rotation support plate 4 A similar guide support plate 4' is fixed between the front plate 711' and the rear plate 712' of the rotation support 71' so as to extend in the front and rear direction at a position close to the inner edge thereof. The thickness of the gap S formed between 4 and 4' is adapted to the thickness of the packaged film to be processed, thereby forming a film holding mechanism. Further, the guide support plate 4 related to the first rotation support body 71
The lower end surface of is an inclined surface 41 (see FIG. 6) facing the second rotation support 71', and the lower end surface of the guide support plate 4 related to the second rotation support 71' is 1
Slightly above the guide support plate 4 of the rotation support 71, there is an inclined surface 41' facing the first rotation support 71 side.

A rotary disk 21 is provided between the front plate 711 and the rear plate 712 of the first rotary support 71 so as to be rotatable via a horizontal support shaft 20 installed between them. As shown in FIG. 5A, this rotary disk 21 has a notch 22 formed at its peripheral edge (upper left portion in the figure) that moves upward and to the right as the rotary disk 21 rotates. The lower end of the guide support plate 4 is located inside, and the gripping claw (hereinafter referred to as "the first
"Rotating gripping claw 23". ) The diameter and center position of the rotary disc 21 are set so that the inclined surface 41 of the guide support plate 4 is located forward in the moving direction. The inclined surface 41 of the guide support plate 4 and the first rotating gripping claw 23 constitute the first clamp mechanism 2 . That is, the inclined surface 41 of the guide support plate 4
corresponds to the fixed receiver 2b in FIG. 2, and the first rotating gripping claw 23 corresponds to the first rotating gripping claw 2a.

Between the front plate 711' and the rear plate 712' of the second rotation support 71', there are two rotation plates 3 which are rotatable via a horizontal support shaft 30 installed between them.
1 and 31 are provided. These two rotating plates 3
1 and 31 are provided so as to be spaced apart from each other in the front-rear direction so that one is located in front of the rotary plate 21 related to the first rotary support 71 and the other is located in the rear. As shown in FIG. 5B, these rotary discs 31, 31 have a notch 32 formed at the peripheral edge (upper right part in the figure) that moves upward and left by rotation. The lower end of the guide support plate 4' is located within the notch 32, and the notch 3
The guide support plate 4' is located in front of the gripping claw (hereinafter referred to as "second rotating gripping claw 33") formed by the notch end surface 321 of the two notch end surfaces 321, 322 that moves forward by rotation. The diameter and center position of the rotating discs 31, 31 are set so that the inclined surface 41' is located. In addition, two rotating plates 3
Nos. 1 and 31 have completely similar shapes to each other. The second clamping mechanism 3 is constituted by the inclined surface 41' of the guide support plate 4' and the second rotating gripping claw 33. That is, the inclined surface 41' of the guide support plate 4'
This corresponds to the fixed receiver 3b in the figure, and the second rotating gripping claw 33 corresponds to the second rotating grasping claw 3a.

The upper edges of the guide support plates 4, 4' are arranged to protrude from the upper edges of the front plates 711, 711' and the rear plates 712, 712'. Further, as shown in FIGS. 7 and 8, the guide support plate 4' related to the second rotation support 71' has two rotation plates from the tongue guide rod support part 42' provided on the back surface thereof. Board 31,
Two tongue guide rods 44, 44' are provided on both sides of 31 to extend downward. As shown in FIGS. 7A and 7B and FIG.
3', it is bent toward the first rotating support 71 so as to protrude from the inclined surface 41', crosses below the gap S, and extends substantially parallel to the inclined surface 41 of the guide support plate 4.

Reference numeral 5 indicates a gripping operating mechanism that drives the first clamp mechanism 2 and the second clamp mechanism 3. This gripping operating mechanism 5 operates the first operating rod 52 that operates the rotating disc 21 related to the first rotating support 71, and the rotating discs 31, 31 related to the second rotating support 71'. A second operating rod 52', and a movable gripping frame 54 that drives the first operating rod 52 and the second operating rod 52'.
and a gripping crank mechanism 55 that drives the movable gripping frame 54.

The first operating rod 52 is an upper rod 521 whose upper end is pivotally connected to the rotating shaft 51 installed between the front plate 711 and the rear plate 712 of the first rotating support 71.
and a lower rod 52 whose upper end is connected at a pivot point a at the lower end of the upper rod 521 and connected to the outer peripheral part of the rotary disk 21 at a pivot point b in the middle of the upper rod 521.
2, and in the non-operating state shown in FIG. 3, it is bent outward at the pivot point a. In the first operating rod 52, a tension spring 500 (see FIG. 12) is fixed to a rod 521 and a lower rod 522. This tension spring 500 also constitutes a grip state holding mechanism that maintains the straight state of the upper rod 521 and the lower rod 522 when they are straight.

The second operating rod 52' is connected to the second rotating support 7.
An upper rod 521' whose upper end is pivotally connected to a rotating shaft 51' installed between the front plate 711' and the rear plate 712' of 1', and a pivot point a' at the lower end of this upper rod 521'. It consists of a lower rod 522' whose upper end is connected and which is connected to the outer periphery of the rotary disks 31, 31 at a pivot point b' in the middle, and in the non-operating state shown in FIG. ′ is bent outward. Said second operating rod 5
At 2', a tension spring 500' (see FIG. 12) is fixed at both ends to the upper rod 521' and the lower rod 522' so as to extend beyond the pivot point a'. This tension spring 500' is connected to the upper rod 5
21' and the lower rod 522' also constitute a gripping state holding mechanism that maintains the straight state when they are straight. In addition, as shown in FIG. 9, the lower rod 522 of the first operating rod 52 and the second operating rod 52'
The lower rods 522' are arranged so that their lower ends are at the same level and lined up with each other in the front-rear direction.

In the above, the gripping state holding mechanism can also be constituted by a coil spring or the like that biases the rotary disks attached to the rotating shafts of the rotary disks 21 and 31 in the operating direction.

As shown in FIG. 9, the movable gripping frame 54 is
It is a horizontally elongated member with an L-shaped cross section, and a guide groove 541 extending horizontally is formed in the vertical plate portion. Two guide pins 53 are provided in the guide groove 541 so as to protrude horizontally from a vertical support plate 53 fixed to the bottom plate of the outer casing 8.
1,532 are slidably fitted, thereby supporting the movable gripping frame 54 so as to be movable in the left-right direction.

The gripping movable frame 54 has a gripping crank mechanism 55 connected to one end (the right end in FIG. 3), and a lower rod 52 of the first operating rod 52 to the other end.
A vertical actuating plate 542 is fixed to be located between the lower rods 522' of the second actuating rod 52' and the lower rod 522' of the second actuating rod 52'.

The gripping crank mechanism 55 is rotatably supported by being inserted through a vertical support plate 56 fixed to the bottom plate of the outer casing 8 and a similar support plate 57 provided in front of the support plate 56. horizontal rotation axis 5
51, and a driven gear 552 provided at the front end of the rotating shaft 551 that protrudes forward from the support plate 57.
and a rotating rod 55 fixed to the rear end of the rotating shaft 551.
3, this rotating rod 553 and the movable gripping frame 54
The interlocking rod 554 is connected to one end of the interlocking rod 554 by pivotally connecting both ends thereof.

Reference numeral 6 indicates a grip release operating mechanism, and the grip release operation mechanism 6 is driven by the gripping operation mechanism 5 and is further held in an activated state by the gripping state holding mechanism. Clamp mechanism 2
and the first operating rod 5 in the operating state, which is for releasing the gripping state of the second clamp mechanism 3.
2, a grip release movable frame 64 that drives the second operating rod 52', and a grip release crank mechanism 65 that drives the grip release movable frame 64.

As shown in FIG. 9, the grip release movable frame 64 is a member made of a horizontally elongated vertical plate 641, and a guide groove 644 extending horizontally is formed in the vertical plate 641. In this guide groove 644, there is a supporting plate 6 fixed to the bottom plate of the outer casing 8, which stands vertically.
3, the two guide pins 631 and 632 protruding from the horizontal direction are fitted together so as to slide, thereby causing the movable gripping frame 64 to move forward of the movable gripping frame 54. In position,
It is supported so that it can move freely in the left and right direction.

This grip release movable frame 64 has one end (the third
At the right end in the figure), there is a connecting piece 645 fixed to protrude upward to which a grip release crank mechanism 65 to be described later is connected, and the first
The operating rod 52 has a horizontal operating plate 642 fixed at a level slightly higher than the lower end of the lower rod 522 so as to face the outer edge of the lower rod 522,
Further, at the other end, a lower rod 52 of the second operating rod 52' is attached.
It has a horizontal actuating plate 643 fixed at a level slightly higher than the lower end of the lower rod 522' so as to face the outer edge of the lower rod 522'.

The grip release crank mechanism 65 includes a horizontal rotating shaft 651 that is inserted through the support plate 57 and supported so as to be rotatable, a driven gear 652 provided at the front end of the rotating shaft 651 that protrudes forward from the support plate 57, a rotating rod 653 fixed to the rear end of the rotating shaft 651, and a connecting piece 64 between the rotating rod 653 and the connecting piece 64.
5 and an interlocking rod 654 which is pivotally connected at both ends to the interlocking rod 654.

7 indicates an expansion mechanism, and this expansion mechanism 7
are interlocking gears 72 fixed to rotation shafts 76, 76' of rotation arms 73, 73' that support the first rotation support 71 and the second rotation support 71', respectively;
72', and an expansion crank mechanism 74 for driving the first rotating support 71 to expand.

The expansion crank mechanism 74 is connected to the rotating shaft 5.
The support plate 56 and the support plate 57 that support the support plate 51
A horizontal rotating shaft 741 that is inserted above the rotating shaft 551 and rotatably supported, a driven gear 742 provided at the front end projecting forward from the support plate 57, and the rotating shaft of the rotating shaft 741. A rotating rod 743 fixed to the rear end extending beyond the rear end of 551, and this rotating rod 743 and the first
It consists of an interlocking rod 744 connected to the rear plate 712 of the rotating support 71 by pivoting its both ends.

As shown in FIG. 14, when the expansion mechanism 7 is in the non-operating state, the interlocking gear 7
A tension spring 77 that restrains the rotation of the gear 2' in a direction opposite to the direction of rotation due to expansion is attached to a fixing plate 77 fixed to the interlocking gear 72' and the outer casing 8.
1, thereby suppressing the first rotation support 71 and the second rotation support 71' in a mutually closed state.

Reference numeral 9 denotes a drive source mechanism, which includes the gripping actuation mechanism 5, the expansion actuation mechanism 7, and the grip release actuation mechanism 6.
A drive vehicle 9 serves as a common drive source that sequentially operates the
has 0. This drive vehicle 90 has the support plate 57
It is fixed to a drive shaft 92 which is rotatably supported by
It is driven by a motor M via an intermediate gear 93 fixed to a drive shaft 92 and an intermediate gear 94 that meshes with the intermediate gear 93.

The driven gears 552, 742, and 652 in the gripping crank mechanism 55, the expanding crank mechanism 74, and the gripping release crank mechanism 65 have circumferences (indicated by dashed lines in FIG. 3) in a common vertical plane in this order. ) is arranged on the drive wheel 90.
A driving gear part 91 is formed in a protruding state on a part of the outer peripheral edge of the driving gear part 91 so as to mesh with the driven gears 552, 742, and 652 sequentially by rotation thereof. This drive gear section 91 is
It has a length that allows each of the driven gears 552, 742, and 652 to rotate by one rotation by meshing with and passing through the driven gears.

A first rotating support 71 is provided on the top plate of the outer casing 8.
A recess 81 is formed above the second rotating support 71', and a pair of downwardly inclined guide plates 82, 82' is provided at the center of the recess 81. A film insertion opening 83 located directly above the gap S between the guide support plates 4 and 4' is defined between the lower ends of the guide support plates 82'. When the cover 84 that opens and closes the film insertion slot 83 is closed, the recess 84
It is provided so as to open upwardly by a hinge 812 so that it can be housed in the container. SW2 is this cover 8
4 shows a detection switch that detects the open/closed state,
This switch SW2 has an elastic piece 851 that is activated when the cover 84 located at the bottom 811 of the recess 81 of the outer casing 8 is closed, and the switch piece 85 is operated by this elastic piece 851. Then, from the lower surface of the cover 84, the tongue guide rods 44', 44' below the guide support plates 4, 4'
The distance is set to be approximately equal to the length in the vertical direction of the packaging bag for the film to be processed.

On the other hand, a film discharge port 86 is formed directly below the guide support plates 4, 4' on the bottom plate of the outer casing 8, and a pair of film guides 88, 88' inclined toward the film discharge port 86 are provided on the bottom plate of the outer casing 8. Furthermore, a shutter 87 for opening and closing the film discharge port 86 is provided on the outer surface of the bottom plate. It is preferable that the shutter 87 is connected to a shutter operating mechanism (not shown) controlled by, for example, the switch SW2 so that the film discharge port 86 is closed when the cover 84 is open and the film discharge port 86 is opened when the cover 84 is closed.

FIG. 10 shows a preferred example of a drive circuit for the motor M of the drive source mechanism 9 shown in FIG. A motor self-holding limit switch that is held closed while the motor rotates one revolution when the motor starts driving.
A series circuit with SW1 is connected to a power source AC, and a first relay coil Ry1, a first normally open relay contact ry1a operated by the first relay coil Ry1, and a first normally open relay contact ry1a operated by the second relay coil Ry2 are connected. 2 normally closed relay contact ry2b and a detection switch that detects the open/closed state of the cover 84
A series circuit with SW2 is connected to a power source AC, and a starting switch PSW is connected in parallel to the first normally open relay contact ry1a. Further, the first relay coil
The first normally open relay contact ry1 operated by Ry1
b and a second normally open relay contact ry2c activated by the second relay coil Ry2, and a series circuit of the motor M are connected to a power source AC, and an operation indicator lamp PL and a second relay coil are connected.
It is constructed by connecting a series circuit with a second normally open relay contact ry2a activated by Ry2 to the power supply AC. MSW is the main switch.

FIG. 11 is a perspective view showing the external appearance of the above-mentioned opening processing device, in which 89 is a switch button of the main switch MSW, and 891 is a switch button of the start switch PSW.

Next, the operation of the above-mentioned device will be explained. First, the cover 84 is opened, and the packaged film to be unsealed is inserted into the gap S through the insertion opening 83 with the sealed edge 100 of the packaging bag positioned at the lower end.
The guide and support plates 4 and 4' are used as guides to push in while sliding on each inner surface of the plates. Then, by closing the cover 84, the packaging bag 1 is pushed down through the lower surface of the cover 84, whereby the packaging bag 1 is moved so that the tip edge of the first tearing tongue piece 101 is placed on the tongue piece guide rod 4.
4', 44' (6th
(see figure). Thereby, the packaging bag 1 is held on both sides by the frictional force with the guide support plates 4, 4'. At this time, the tearing tongue piece 101 protruding further forward is bent toward the inclined surface 41 side of the guide support plate 4 by the tongue piece guide rods 44', 44', and is brought into a slightly opened state. There is.

With the thus wrapped film set, the drive wheel 90 of the drive source mechanism 9 is moved to the third position.
The packaging bag 1 is opened in the following manner by making one rotation in the direction of the arrow from the state shown in the figure, that is, the state in which the driving gear portion 91 is in front of the driven gear 552 related to the gripping crank mechanism 55.

That is, when the drive wheel 90 rotates in the direction of the arrow, the drive gear portion 91 first engages with the driven gear 552 of the gripping actuating mechanism 5, and while passing through this, the rotating rod 553 rotates once, and the gripping crank mechanism 5 rotates. 5
5 to operate. As a result, as shown in FIG. 12, the movable gripping frame 54 is moved from the position shown in FIG.
It is driven to make one reciprocating motion, first moving to the right and then moving to the left. As a result, when the movable gripping frame 54 is moved to the right, the vertical actuation plate 542 moves the lower end of the lower rod 522 of the first actuation rod 52 to the right, that is, as shown by the two-dot chain line, the vertical actuation plate 542 Push and move the operating rod 52 in the direction of extending it linearly.

However, the first operating rod 52 has its upper rod 521
Since its upper end is pivotally connected to the rotating shaft 51 fixed to the first rotating support 71, the lower rod 522 is displaced downward, and as a result, the pivot point b
The rotary disk 21 of the first clamp mechanism 2, which is pivotally mounted at , is rotated in the direction of the arrow from the state shown by the dashed line, and the first rotary gripping pawl 23 formed on the outer periphery of the rotary plate 21 is rotated in the direction of the arrow. The first tearing tongue 101 of the packaging bag 1 protruding from the lower end of the packaging bag 4' is brought into contact with the inner surface of the bag 1 and scooped up, and further rotated to release the first tearing tongue 101 as shown in FIG. is pushed down onto the inclined surface 41 of the guide support plate 4, and held in this state by squeezing.

In this state, the grip state holding mechanism related to the first operating rod 52, in the illustrated example, the tension spring 5
00 is in a so-called quasi-stable state and its tensile force holds the first actuating rod 52 in an extended state, so the first clamping mechanism 2 maintains its gripping state, and the movable gripping frame 54 Even if it moves to the left and separates from the first operating rod 52, that state is still maintained.

Subsequently, the movable gripping frame 54 is moved to the left, and the vertical actuation plate 542 is moved to the lower rod 5 of the second actuation rod 52'.
The lower end of the second actuating rod 52' is pushed to the left, that is, in the direction of extending the second actuating rod 52' in a straight line as shown by the two-dot chain line.

However, the second operating rod 52' is
1' is the rotating shaft 5 fixed to the second rotating support 71'.
Since its upper end is pivotally connected to 1', the lower rod 5
22' becomes displaced downward, and as a result,
The rotary disks 31, 31 of the second clamp mechanism 3, which are pivotally attached at the pivot point b', are rotated in the direction of the arrow from the state shown by the dashed line, and the second rotary gripping claw 33 formed on the outer periphery thereof However, the second tearing tongue piece 102 that protrudes from the lower end of the guide support plates 4, 4' and remains alone because the first tearing tongue piece 101 has already been displaced and gripped outward. It comes into contact with the exposed inner surface and scoops it up, and then rotates further to release the second tearing tongue piece 102 as shown in FIG.
is pushed down onto the inclined surface 41' of the guide support plate 4', and held in this state by squeezing.

In this state, the tension spring 500', which is the holding state holding mechanism for the second operating rod 52',
is in a so-called quasi-stable state, and its tensile force holds the second operating rod 52' in an extended state, so that the second clamping mechanism 3 maintains its gripping state, and the movable gripping frame 54 Even if it moves to the right and separates from the second operating rod 52', this state is still maintained.

As described above, the two tearing tongues of the set film packaging bag 1 are opened outward from each other, and the first clamping mechanism 2 and the second It is in a state where it is fixedly held by the second clamp mechanism 3 of the rotation support 71'.

When the drive wheel 90 further rotates in the direction of the arrow, the drive gear section 91 then rotates to the driven gear 74 of the expansion mechanism 7.
2 and rotates the rotating rod 743 once to operate the expansion crank mechanism 74. That is, the rotating rod 74
3 starts to rotate, the first rotation support body 71 is pulled by the interlocking rod 744 of the expansion crank mechanism 74, and the rotation shaft 7 of the rotation arm plate 73 that supports it is pulled.
6 to the right as shown in FIG. 14 to open.

At the same time, the interlocking gear 72 fixed to the rotating shaft 76 is rotated and the interlocking gear 7 engages with the interlocking gear 72.
2' is driven, and as a result, the second rotating support 7
1' is rotated to the left around the rotation shaft 76' via the rotation arm plate 73' and opened. At this time, the tension spring 77 provided on the interlocking gear 72' is expanded.

By expanding the first rotation support 71 and the second rotation support 71' to both sides in this way, the first clamp mechanism 2 and the second clamp mechanism 3 provided thereon can be moved to the left and right of each other. Although it is spaced apart,
At this time, the tearing tongues of the packaging bag 1 are still gripped by these clamp mechanisms, so due to the separation between them, the packaging bag 1 is first torn at its tear seal edge 100 and then torn. The seal edges on both sides are peeled off and opened. Since the packaging bag 1 is opened in a downward-opening manner in this manner, the undeveloped film is separated from the packaging bag, falls, and is discharged from the opened discharge port 86.

After that, when the rotation angle of the rotation rod 743 in the expansion operation mechanism 7 exceeds 180 degrees, the expansion clamp mechanism 74 starts to push back the first rotation support 71, and the return force by the tension spring 77 is also applied. Then, a return operation opposite to the above is performed. That is, the first rotating support 71 and the second rotating support 71' are rotated back and returned to the initial state (the state shown by the solid line in FIG. 14).

The packaging bag is opened as described above,
The film is separated and taken out, but in this state, the gripping state holding mechanism by the tension springs 500, 500' remains in operation.

When the drive wheel 90 further rotates, the drive gear portion 91 engages the driven gear 6 in the grip release operating mechanism 6.
Rotating rod 653 while meshing with 52 and passing through this
The grip release crank mechanism 65 is operated by making one rotation. That is, like the movable gripping frame 54, the gripping release movable frame 64 is driven to make one reciprocating movement from the position shown in FIG. 3 by first moving rightward and then leftward.

As a result, the movable grip release frame 64 is moved to the right, so that the horizontal actuating plate 643 provided at the other end (left end) of the grip release movable frame 64 is extended from the state shown in FIG. The lower end of the lower rod 522' of the second operating rod 52', which is in the state of The second rotating gripping claw 33 of the second clamping mechanism 3 is rotated in a direction away from the inclined surface 41' of the guide support plate 4', and the tearing tongue piece 102 is returned to the second clamping mechanism 3. be freed from

Next, when the movable frame 64 for grip release is moved to the left, the horizontal actuation plate 642 provided at one end (right end) of the movable frame 64 for grip release moves the lower part of the first actuation rod 52 which is in the extended state. The lower end of the rod 522 is actuated and pushed to the left, whereby the first actuating rod 5 is moved by the tensile force of the tension spring 500.
2 returns to its original bent state, and the first rotating gripping claw 23 in the first clamping mechanism 2 is attached to the guide support plate 4.
is rotated in a direction away from the inclined surface 41, and the tearing tongue piece 101 is released from the first clamp mechanism 2.

The device thus returns to its initial state.

The opening process of the second film packaging bag 1 is achieved as described above, but as the first rotation support 71 and the second rotation support 71' are expanded by the expansion operation mechanism 7, the packaging bag 1 is opened. is torn from below, and as a result, its upper end is once drawn into the gap S.
However, with the return of the first rotation support 71 and the second rotation support 71', the shape of the empty packaging bag 1 is restored due to the restoring force of the packaging bag itself. Since it rises inside S and projects into the insertion slot 83, it is supported by the guide support plates 4, 4' and stops, so it can be easily discharged to the outside by opening the cover 84, pinching the protruding upper end, and pulling it out. can.

Next, the operation of the motor drive circuit of the drive source mechanism 9 will be explained. First, after turning on the main switch MSW, insert the packaging bag 1 from the film insertion slot 83 and close the cover 84, and then the detection switch SW is turned on.
The second switch piece 85 is actuated by the elastic piece 851, and the detection switch SW2 is closed.

When the start switch PSW is closed by pressing the switch button 891 in this state, the first relay coil Ry1 is energized, thereby closing the first normally open relay contact ry1a and the first relay contact ry1b, thereby driving the motor M. As a result, the motor self-holding limit switch SW1 is closed and the second
Relay coil Ry2 is energized, which causes the second
The normally open relay contacts ry2a and ry2c are closed, and the second normally closed relay contact ry2b is opened. In this way, the second normally closed relay contact ry2b is opened, so the first relay coil Ry1 is deenergized, which causes the first normally open relay contacts ry1a and ry1b to open.
is opened, but since the second normally open relay contact ry2c is closed, the motor M continues to drive.

When the drive wheel 90 rotates once and returns to the initial position shown in FIG. 3, the limit switch SW1 is opened and the second relay coil Ry2 is deenergized, thereby causing the second normally open relay contacts ry2a, ry2
c is opened and the second normally closed relay contact ry2b
is closed, and as a result, the driving of the motor M is stopped and the drive wheel 90 stops at its original position.

According to the apparatus configured as described above, simply by inserting the undeveloped film that has been photographed in its packaging through the film insertion slot 83, closing the cover 84, and operating the switch button 891 of the start switch PSW. Since the packaging bag is automatically opened and the undeveloped film is discharged from the discharge port 86, it is possible to mechanically unseal the film packaging bag after photography without any manual effort. Thus, opening processing can be accomplished with high efficiency.

Furthermore, since the separated film can be automatically discharged using gravity, by connecting the film inlet of a developing means such as an automatic developing machine to the film discharge port 86, it is possible to discharge the separated film very easily and reliably. It is very convenient because the film can be supplied to the developing device, and in particular, it is possible to develop a large number of films continuously.

Furthermore, since the gripping operation of the first clamp mechanism 2 that grips the first tearing tongue piece is performed with priority, and the gripping operation of the second clamp mechanism 3 is performed subsequently. The operation of scooping and gripping the first tearing tongue protruding in the direction is reliably achieved, and the inner surface of the short second tearing tongue is exposed by the gripping operation of the first clamp mechanism 2. Therefore, the operation of scooping and gripping the second tearing tongue piece by the second clamp mechanism 3 is reliably achieved. In this respect, as shown in FIG. 1, a film made of a packaging bag in which one of the two tearing tongues protrudes more outwardly than the other can always be reliably opened.

Furthermore, in the first clamp mechanism 2, the rotary gripping claws 23 are formed on the rotary disc 21, and the rotary gripping claws 33 are formed on the rotary disc 31, so that the clamping mechanism can operate smoothly. It also has the advantage of being reliable.

In addition, with the configuration using the common drive source mechanism 9,
The necessary opening process is automatically carried out simply by starting the drive source mechanism 9, making it an extremely convenient device.

Furthermore, according to the configuration in which a motor drive circuit as shown in FIG. 10 is incorporated into the drive source mechanism 9, when the cover 84 is opened, the switch button 891 of the start switch PSW provided on the outer casing 8 is operated. Since the drive source mechanism 9 does not operate even if the package is opened, no light from the outside is irradiated onto the area where the packaging bag being opened is located, so that the photographed film is not damaged.

In order to set the film in the processing position, if tongue guide rods 44', 44' are provided as shown in FIG. The guide rods 44', 44' allow it to be bent along the inclined surface 41 of the guide support plate 4 to be gripped, thereby increasing the reliability of the operation by the first clamping mechanism 2. It can be further improved. This is particularly effective when the packaging bag has a tendency to bend so that the long tearing tongue 101 curves toward the short tearing tongue 102.

Other examples of the present invention will be described below.

Instead of the inclined surface 41 of the guide support plate 4, for example, as shown in FIG. It is also possible to configure the rotating pieces 45, 45' to stop and act as receivers at that position, or to provide a separate receiving piece for receiving a rotating gripping claw other than the guide support plate.

Further, as shown in FIG. 17, a claw 141 is formed at the tip of the arm 14 that rotates around the fulcrum P', and this is used as the first rotating gripping claw 23, and the arm that rotates around the fulcrum Q' A claw 141' may be formed at the tip of 14' and this may be used as the second rotating gripping claw 33.

In order to drive the gripping actuation mechanism 5, expansion actuation mechanism 7, and grip release actuation mechanism 6, a drive source that drives each mechanism in a predetermined order and time relationship is connected, without relying on a drive source mechanism. Alternatively, each mechanism may be operated manually without using a drive source.

〔effect〕

As described above, the present invention consists of rectangular resin sheets stacked one on top of the other to form a sealing edge around the periphery.
A total of two tearing tongue pieces are formed integrally with the resin sheet so as to extend outward from the tear seal edge related to the center side of the three sealed sides, and one tearing tongue piece is connected to the other tearing tongue piece. An apparatus for opening and processing X-ray film packaged with a packaging bag projecting beyond the film, wherein horizontal axes parallel to each other are arranged at the lower ends of each film so that the upper ends of each film can be opened apart from each other at positions adjacent to each other. A pair of rotating arms rotatably provided around the periphery, a first rotating support and a second rotating support provided at the upper ends of these rotating arms, and a first rotating support and a second rotating support. a mechanism for holding an X-ray film to be processed between the two rotating supports in a state in which the tearing tongue of the packaging bag is located at the lower end; and the first rotating support. moving obliquely upward so as to scoop the one tearing tongue of the held X-ray film packaging bag from the inner surface thereof, and bending the one tearing tongue outward. a first clamping mechanism having a gripping claw for gripping the held X;
A second gripping claw that moves obliquely upward to scoop up the other tearing tongue of the wire film packaging bag from the inner surface thereof and grips the other tearing tongue in an outwardly bent state. a clamping mechanism and associated pivoting arms for separating the first pivoting support and the second pivoting support from each other while the first clamping mechanism and the second clamping mechanism grip the tearing tongue; and an opening operation mechanism for opening the packaging bag by rotating the packaging bag through the tearing tongue of the packaging bag, thereby splitting the tear seal edge through the tearing tongue of the packaging bag, and then peeling off the seal edge that follows. Therefore, the film packaging bag can be mechanically and reliably opened.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of a packaging bag for packaged dental X-ray film, FIGS. 4 and 4 are an explanatory front view and an explanatory plan view, respectively, showing the overall structure of the main parts of the device of the embodiment, and FIGS.
6 is a front view for explaining the operation of the first clamp mechanism and the second clamp mechanism, and FIGS. 7A and 7B are tongues, respectively. An explanatory left side view and an explanatory right side view showing a part of Fig. 6 for one guide bar, Fig. 8 a perspective view showing a part of the other guide support plate, and Fig. 9 a movable gripping frame. FIG. 10 is a circuit diagram showing an example of a motor drive circuit;
FIG. 11 is a perspective view showing the appearance of the device of the embodiment, FIG. 12 is an explanatory diagram of the gripping operation by the movable gripping frame,
FIG. 13 is an explanatory diagram of the operation of the first clamp mechanism and the second clamp mechanism, FIG. 14 is an explanatory diagram of the expanding operation of the rotating support, and FIG. 15 is an explanatory diagram of the operation by the movable frame for grip release, FIG. 16 is an explanatory diagram of a modification of the guide support plate, and FIG. 17 is an explanatory diagram of a modification of the clamp mechanism. 1...Packaging bag, 101...First tearing tongue piece,
102... Second cleavage tongue piece, 11... Rotating shaft,
12... Rotating gripping claw, 13... Guide groove, 2... First clamp mechanism, 21... Rotating disc, 23... First
Rotating gripping claw, 24...Gripping claw, 3...Second clamp mechanism, 31...Rotating disc, 33...Second rotating gripping claw, 4, 4'...Guiding support plate, S...Gap , 4
1, 41'... Inclined surface portion, 45, 45'... Rotating piece, 5... Grasping operating mechanism, 52, 52'... Operating rod, a, a', b, b'... Pivoting point, 54...Movable gripping frame, 55...Gripping crank mechanism, 6...
Grasping release operating mechanism, 64...Movable frame for grasping release, 65...Gripping release crank mechanism, 7...Expansion operating mechanism, 71, 71'...Rotating support, 74
...Crank mechanism for expansion, 8...Outer casing, 83...
Film insertion slot, 84...Cover, 86...Film discharge port, 87...Shutter, 9...Drive source mechanism, 90...Drive wheel, 91...Drive gear section.

Claims (1)

[Claims for Utility Model Registration] Rectangular resin sheets are stacked one on top of the other to form a seal edge around the periphery, and the resin sheet extends outward from the cleavage seal edge at the center of the three sealed sides. An apparatus for opening an X-ray film packaged in a packaging bag in which a total of two tearing tongues are integrally formed and one tearing tongue protrudes beyond the other tearing tongue. , a pair of rotating arms that are rotatably provided at their lower ends around horizontal axes parallel to each other so that their upper ends open apart from each other at positions adjacent to each other; A first rotating support and a second rotating support are provided, and an X-ray film to be processed is placed between the first rotating support and the second rotating support in a state where the first rotating support and the second rotating support are close to each other, a mechanism for holding the packaging bag in a position where the tearing tongue piece is located at the lower end; and a mechanism for holding the packaging bag in a position where the tearing tongue piece is located at the lower end, and the one tearing tongue piece of the held X-ray film packaging bag is provided on the first rotating support. a first clamping mechanism having a gripping claw that moves obliquely upward so as to scoop it from the inner surface thereof and grips one of the tearing tongues in an outwardly bent state; The held X
A second gripping claw that moves obliquely upward to scoop up the other tearing tongue of the wire film packaging bag from the inner surface thereof and grips the other tearing tongue in an outwardly bent state. a clamping mechanism and associated pivoting arms for separating the first pivoting support and the second pivoting support from each other while the first clamping mechanism and the second clamping mechanism grip the tearing tongue; and an opening operation mechanism for opening the packaging bag by rotating the packaging bag through the tearing tongue of the packaging bag, thereby splitting the tear seal edge through the tearing tongue of the packaging bag, and then peeling off the seal edge that follows. 1. An unsealing processing device for packaged X-ray film, characterized in that: