JPH0614226Y2 - Roller support structure for photographic material processor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is used in a photographic light-sensitive material processing machine for processing a light-sensitive material, and is a roller support structure for pivotally supporting a roller for conveying a light-sensitive material to a pair of side plates. Regarding

[Conventional technology]

A plurality of conveyance rollers, which are arranged in the processing tank and convey the photosensitive material, are hung between a pair of side plates constituting a conveyance rack, and are supported by these side plates via bearings.

These conveying rollers are adapted to rotate by being given a rotational driving force and convey the photosensitive material. When these transport rollers are peeled off from the photosensitive layer of the photosensitive material or deposits of processing liquid components and adhered during transport, the surface of the photosensitive material may be damaged if used in this state. There is.

Therefore, it is necessary to take out the transport roller together with the side plate from the inside of the processing tank and then remove it from between the side plates for maintenance such as cleaning.

[Problems to be solved by the device]

However, in the roller support structure disclosed in Japanese Utility Model Laid-Open No. 61-519, a bearing that supports both end portions of the transport roller to the side plates when the transport roller is removed from between the side plates for maintenance. After removing them from the side plate and the rotary shaft, respectively, the rotary shaft must be tilted and pulled out from the bearing support holes provided in the side plate and supporting the bearings, and this work is complicated. For this reason, there has been a problem that maintenance is time-consuming.

In addition, even when this transport roller is attached, the procedure reverse to the above is required and the work is complicated.

In consideration of the above facts, the present invention has an object to obtain a roller supporting structure for a photographic light-sensitive material processing machine in which a conveying roller can be easily removed from a side plate and easily attached to the side plate.

[Means for Solving the Problems]

In order to achieve the above object, the present invention provides a roller supporting structure used in a photographic light-sensitive material processing machine for processing a light-sensitive material, which supports a conveying roller having a roller portion between a pair of side plates facing each other. One support shaft provided at one end of the pair of side plates and supported by one side plate of the pair of side plates via a bearing, and arranged near the other end of the roller portion, and on the other side plate of the pair of side plates. The other support shaft, which is axially supported via a bearing and is attached to the roller portion so as to be relatively movable in the rotation axis direction thereof, a gear integrally formed with the other support shaft, and the roller portion. An urging unit that urges the other support shaft in a direction of separating from the other support shaft, and a detent unit that prevents relative rotation between the roller portion and the other support shaft are provided.

[Action]

According to the present invention, the carrying roller has the support shaft supported by the bearing of the side plate, is reliably supported by the side plate to sufficiently resist the load acting in the direction perpendicular to the axis of the carrying roller, and is used for maintenance such as cleaning. In order to remove the rollers from the pair of side plates for this purpose, the roller portion and the support shaft may be brought close to each other in the axial direction of the rollers against the urging force of the urging means, and the rollers are mounted between the pair of side plates. In this case, the reverse operation may be performed, and the excellent effect that the work of removing and installing the roller is extremely easy is obtained.

Further, if the biasing means is arranged only between the roller portion and the support shaft, relative rotation occurs between the roller portion and the support shaft when driving the conveying roller, and friction between the roller portion and the support shaft is generated. The resistance increases. As a result, a large force is required to drive the roller, and the urging means is easily damaged, which shortens the life of the roller. This is solved by providing a rotation stopping means in addition to the biasing means to prevent relative rotation between the roller portion and the support shaft.

Moreover, since the gear is integrally formed on the support shaft of the conveying roller, the gear is supported by the urging force of the urging means when the conveying shaft is supported between the side plates when the conveying roller is mounted between the side plates. If a drive gear that approaches the side plate together with the shaft and drives the conveyor roller to rotate is arranged near the side plate, the drive gear moves parallel to the rotation axis of the drive gear and easily meshes with the drive gear. be able to. Also for removal, move the gear parallel to the axial direction of the drive gear,
The mesh with the drive gear can be released easily.

[Example of device]

FIG. 2 shows a photographic material processing machine 1 to which the present invention is applied.
0 examples are shown.

In the photographic light-sensitive material processing machine 10, a developing tank 14, a fixing tank 16, and a washing tank 18 are fixed to a machine frame 12 via a bracket 13, and a photosensitive material 22 (hereinafter referred to as a film) inserted from an insertion table 20. Is taken out after being successively dipped by the carrying rollers of the carrying rack 24 arranged in each of these processing tanks, dried in the drying section 26 and then taken out to the film stocker 27.

A developing entrance rack 28 is arranged near the insertion table 20 above the developing tank 14 so that the film 22 inserted from the insertion table 20 is guided and conveyed into the developing tank 14.

A development crossover rack 30 is disposed between the developing tank 14 and the fixing tank 16, and squeezes the developing solution from the film 22 sent from the developing tank 14 and guides and conveys the film into the fixing tank 16. It is supposed to do.

A fixing crossover rack 32 is arranged between the fixing tank 16 and the washing tank 18, and squeezes the fixing solution from the film 22 sent from the fixing tank 16 and guides the film 22 into the washing tank 18. It is designed to be transported.

A squeeze rack 34 is arranged between the washing tank 18 and the drying section 26. This squeeze rack is provided with a plurality of rollers 36, and guides the washing water adhering to the film 22 sent from the washing tank 18 to the upper part of the drying part 26 while squeezing it, and from the upper part to the drying part. Two
The film 22 is inserted into the film 6.

The film 22 inserted from the upper part of the drying unit 26 has a plurality of conveying rollers 38 arranged in a zigzag pattern extending vertically.
Are lowered and accumulated in the film stocker 27 from the film discharge port 26A.

In the drying unit 26, a plurality of hot air blowing pipes 40 are arranged on both sides of the transport roller 38. The warm air blow-out pipe 40 is a drying fan 42 disposed in the photographic material processor 10.
It is in communication with. A plurality of hot air outlets are provided along the axial direction of these hot air blow-out pipes 40. Therefore, the warm air blown from the drying fan 42 is blown from the warm air blowing pipe 40 to both sides of the conveyed film 22.

As shown in FIG. 2, a heat exchanger 35 is arranged on the machine frame 12 below the developing tank 14, the fixing tank 16, and the washing tank 18. The heat exchanger 35 is connected to the circulation pump 3 on the way.
The developing tank is communicated with the developing tank via the conduit 39.

Therefore, the developing solution in the developing tank 14 is sent to the heat exchanger 35 by the operation of the circulation pump 37, cooled by the heat exchanger 35, and again sent into the developing tank 14.

A developing solution replenishing tank 41 and a fixing solution replenishing tank 43 are mounted in the photographic material processing machine 10. A developing replenisher and a fixing replenisher are contained in these replenishing tanks, and the developing tank 14 and
Each of them is supplied to the fixing tank 16.

As shown in FIG. 1, the conveying rack 24 is provided with a pair of side plates 46 and 48, which are fixed in parallel with each other by stays (not shown).

A plurality of pairs of conveying rollers 68 are rotatably supported between the side plates 46 and 48 of the rack 24 for conveying the film 22, but since they have the same structure, representative examples are shown in FIGS. The carrying roller 68 has carrying roller support shafts 72 and 74 inserted into both ends of a hollow roller portion 70. The roller portion 70 is made of phenol resin, acrylic resin, or the like.

The transport roller support shaft 72 inserted into one end of the roller portion 70 is inserted into the hollow portion of the transport roller 68 with an insertion portion 72A for the roller portion 70 formed on the head, and is fixed to the roller portion 70. There is. In addition, a stopper portion 72 </ b> B that is expanded in diameter from the insertion portion 72 </ b> A and has the same diameter as the roller portion 70 is formed on the head of the transport roller support shaft 72.
When 2A is inserted into the roller portion 70, the stopper portion 72
B is brought into contact with the end surface of the roller portion 70, and positioning is performed in the axial direction.

Further, the transport roller support shaft 72 has a stopper portion 72B.
A supporting portion 72C having a smaller diameter than the fitting insertion portion 72A is projected from the opposite side to the insertion portion 72A. Insertion portion 72A, stopper portion 72B, and support portion 72 that constitute the conveyance roller support shaft 72
C is coaxially and integrally formed.

The support portion 72C is inserted into a bearing 76 fixed to the side plate 46. As a result, one end of the transport roller 68 is pivotally supported on the side plate 46.

On the other hand, the transport roller support shaft 74 inserted into the other end of the roller portion 70 has a hollow portion 70 of the roller portion 70 at the head.
A fitting insertion portion 74A to A is formed. The middle part is
The diameter is expanded from the fitting insertion portion 74A, and the outer circumference is a gear portion 74B.
Has become. From the gear portion 74B, the support portion 74C
Is coaxially extended. The support portion 74C is inserted into a bearing 78 fixed to the side plate 48. As a result, the other end of the transport roller 68 is pivotally supported on the side plate 48.

Further, on the outer periphery of the fitting insertion portion 74A of the transport roller support shaft 74,
The groove 74D is formed long in the axial direction. This groove 74D
From the outer periphery of the hollow portion 70A of the roller portion 70 to the roller portion 7
It is for insertion of the tip of the screw 82 screwed through 0. Therefore, relative rotation between the roller portion 70 and the transport roller support shaft 74 is prevented.

A compression coil spring 80 is arranged between the end surface of the fitting insertion portion 74A inserted into the hollow portion 70A and the bottom wall inside the hollow portion 70A. The compression coil spring 80 rolls along the groove 74D. The portion 70 is biased in the direction of one side plate 46 (direction of arrow B).

The length dimension L ₁ from the tip of the support portion 72C of the transport roller support shaft 72 to the flange of the bearing 76 is set shorter than the dimension L ₂ from the gear portion 74B of the transport roller support shaft 74 to the end surface of the roller portion 70. ing. As a result, the transport roller support shaft 72 and the roller portion 70 are moved in the direction of the side plate 48 (direction of arrow A) against the biasing force of the compression coil spring 80, whereby the transport roller support shaft 72 is moved.
Is detached from the side plate 46.

Next, the operation of this embodiment will be described.

The film 22 inserted into the photographic light-sensitive material processing machine 10 from the insertion table is sequentially conveyed by the conveying rollers of the conveying rack 24 arranged in the developing tank 14, the fixing tank 16 and the water washing tank 18, respectively, and dipped in the film. After being dried in the drying unit 26,
It is taken out to the film stocker 27.

Here, the case where the developing process is completed and the carrying roller 68 is cleaned, and the case where the carrying roller 68 is replaced with another roller will be described.

From the inside of the developing tank 14, the side plates 46 and 48 together with the conveying roller 68
Is taken out.

In the state shown in FIG. 1, the transport roller 68 has both ends supported by the transport roller support shafts 72 and 74, and the bearing 76,
It is pivotally supported to the side plates 46 and 48 via 78.

From this state, the bearing 78 supporting the transport roller support shaft 74 on the side plate 48 is pulled out of the side plate 48. Next, the screw 82 is pulled out, and the roller portion 70 is moved in the direction of the side plate 48 (direction of arrow A) by the length L ₂ against the biasing force of the compression coil spring 80. As a result, the transport roller support shaft 72 is separated from the side plate 46. Next, the roller section 7
0 and the transport roller support shaft 72 are tilted in a direction different from the direction toward the transport roller support shaft 72, then moved in the direction of the side plate 46 (direction of arrow B), and the fitting insertion portion 74A is extracted from the hollow portion 70A. . As a result, the roller portion 70 and the transport roller support shaft 72 are removed from the side plates 46 and 48. In this case, since the diameter of the support portion 74C is smaller than the diameter of the support hole provided in the side plate on which the bearing 78 is supported, the roller portion 70 can be easily tilted.

The case where the roller portion 70 is cleaned or another new roller portion 70 and the transport roller support shaft 72 are attached to the side plates 46 and 48 will be described.

The compression coil spring 80 is previously inserted into the hollow portion 70A of the roller portion 70, and in this state, the fitting insertion portion 74A of the transport roller support shaft 74 is fitted into the hollow portion 70A. At this time, when the roller portion 70 is slightly inclined, it moves in the direction of the side plate 48 (direction of arrow A) against the biasing force of the compression coil spring 80, so that the fitting insertion portion 74A is hollow.
It is inserted inside.

The amount of insertion is such that the roller portion 70 is coaxially positioned between the transport roller support shaft 72 and the transport roller support shaft 74. After being coaxially positioned between the transport roller support shafts 72 and 74, the roller portion 70 is urged by the compression coil spring 80 so that the roller portion 70 is moved to the transport roller support shafts 72 and 74 as shown in FIG. Is axially supported by the side plates 46 and 48 via. In this state, the roller portion 70
Is urged toward the side plate 46 by the urging force of the compression coil spring 80. However, since the end surface of the roller portion 70 is fixed to the stopper portion 72B, the roller portion 70 is positioned. Next, the support portion 74C of the transport roller support shaft 74
Insert the bearing 78 into and move it in the direction of arrow B,
Attach to the side plate 48. As a result, the transport roller 68
Is mounted between the side plates 46, 48.

The other conveying rollers 68 are attached with the same structure, and thus the description thereof is omitted.

As described above, in this embodiment, the transport roller 68 is divided into a roller portion and a support shaft, and one of the roller portions is attached to the transport roller support shaft 72 which is previously fixed to the side plate 46 by moving in the axial direction. After that, to the other side, the conveyance roller support shaft 7
4 is inserted, and the support shaft 74 is mounted on the side plate 48 via a bearing.
It can be easily attached between the side plates 46 and 48 by attaching the.

Also, when removing the transport roller 68 from between the side plates 46 and 48, the transport roller 68 can be easily removed from the side plate by removing only the bearing 78 that supports the transport roller support shaft 74 to the side plate.

Moreover, according to the configuration in which the gear portion 74B is formed integrally with the transport roller support shaft 74 of the transport roller 68, when mounting the transport roller 68 between the side plates 46 and 48,
When the transport roller support shaft 74 is pivotally supported by the bearing 78 of the side plate 48, the roller portion 70 and the transport roller support shaft 74 are moved in the proximity direction against the compression coil spring 80, so that the inside of the hollow portion 70A of the roller portion 70. When the pushing force is removed from the state where the fitting insertion portion 74A of the transport roller support shaft 74 is pushed in, the support portion 74C of the transport roller support shaft 74 is inserted into the bearing 78 of the side plate 48 by the biasing force of the compression coil spring 80. At the same time, the gear portion 74B includes a compression coil spring 80.
If the drive gear (not shown) is arranged near the side plate 48 to drive the carry roller 68 in close proximity to the side plate 48 together with the carry roller support shaft 74, the drive gear (not shown) is directed to the drive gear. Then, it moves in parallel with the axial direction of the drive gear, and can easily mesh with the drive gear. Even in the case of removal, the gear portion 74B can be moved in parallel with the axial direction of the drive gear to easily release the mesh with the drive gear.

[Effect of device]

As described above, in the present invention, the carrying roller has the support shaft axially supported by the bearing of the side plate, and is securely supported by the side plate so as to sufficiently oppose the load acting in the direction perpendicular to the axis of the carrying roller.
When removing the roller from between the pair of side plates for maintenance such as cleaning, the roller portion and the support shaft may be brought close to each other in the axial direction of the roller against the urging force of the urging means. The reverse operation can be performed to attach between the pair of side plates, and the excellent effect that the removing work and the attaching work of the roller are extremely easy can be obtained.

Further, if only the biasing means is arranged between the roller portion and the support shaft, relative rotation occurs between the roller portion and the support shaft when driving the roller, and the frictional resistance between the roller portion and the support shaft is increased. Grows larger. As a result, a large force is required to drive the roller, and the urging means is easily damaged, which shortens the life of the roller. This is solved by providing a rotation stopping means in addition to the biasing means to prevent relative rotation between the roller portion and the support shaft.

Moreover, since the gear is integrally formed on the support shaft of the transport roller, when the transport roller is mounted between the side plates and the support shaft is pivotally supported on the side plates, the gear is urged by the urging means. If the drive gear that approaches the side plate together with the support shaft and drives the conveyor roller to rotate is placed near the side plate, it will move in parallel with the rotary shaft of the drive gear and will easily mesh with the drive gear. can do. Also for removal, move the gear parallel to the axial direction of the drive gear,
The mesh with the drive gear can be released easily.

[Brief description of drawings]

FIG. 1 is a sectional view showing a structure of a conveying roller and a side plate mounting structure, FIG. 2 is a vertical sectional view showing an embodiment of a photographic light-sensitive material processing apparatus applied to the present invention, and FIG. 3 is a conveying roller and conveying. FIG. 6 is an exploded perspective view showing a mounting relationship with a roller support shaft. 10 ... Photosensitive material processing machine, 68 ... Conveying roller, 70 ... Roller section, 72, 74 ... Conveying roller supporting shaft, 80 ... Compression coil spring.

Claims (1)

[Scope of utility model registration request] 1. A roller supporting structure used in a photographic light-sensitive material processing machine for processing a light-sensitive material, wherein a roller supporting structure having a roller portion is supported between a pair of facing side plates, the roller supporting structure being provided at one end of the roller portion. One support shaft supported by one side plate of the pair of side plates via a bearing and one support shaft disposed in the vicinity of the other end of the roller portion, and the shaft is supported by the other side plate of the pair of side plates via a bearing. The other support shaft supported and attached to the roller portion so as to be relatively movable in the rotation axis direction thereof, a gear integrally formed with the other support shaft, the roller portion and the other support shaft A roller for a photographic light-sensitive material processing machine, comprising: a biasing means that biases the roller portion and a support shaft that separates the roller portion and the other supporting shaft from each other. Support structure.