JPH0561178A - Structure of pipeline end - Google Patents

Abstract

PURPOSE:To save the tightening by another member and to decrease the number of parts by improving the workability of assembly at the time of connecting a pipe for supplying liquid to equipment to the equipment. CONSTITUTION:The pipe 338 is flared at one end to be adapted to the cylindrical member on a developing tank side and is formed as an outside cylindrical part 340. An inside cylindrical part 342 is formed on the inner side of this outside cylindrical part 340 to constitute double cylindrical shapes. The cylindrical member on the developing tank side is inserted between the outside cylindrical part 340 and the inside cylindrical part 342. The inner peripheral surface of the outside cylindrical part 340 and the outer peripheral surface of the inside cylindrical part 342 are gradually increased in the spacing size nearer the front end of the pipe 338 to form a tapered shape. The cylindridcal member is, therefore, crimped by the outside cylindrical part 340 and the inside cylindrical part 342 and is held by this crimping force. The crimping force is made equal to or larger than the crimping force in the case of holding of the pipe by tightening from its outer periphery with another member, such as, for example, hose band.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in an automatic processor equipped with a processing tank for processing a black-and-white film such as an X-ray film or a film for graphic arts, or a color film. The present invention relates to a pipe end structure for connecting cylinders forming a pipe.

[0002]

2. Description of the Related Art In an automatic developing machine, a photosensitive material is nipped by conveying rollers provided on a processing rack, dipped in each processing tank such as a developing tank, a fixing tank and a washing tank and conveyed. The photosensitive material is inserted from the surface of the processing liquid, inverted near the bottom and moved to the next processing tank, and the processing liquid preferably has a uniform processing capacity from the liquid surface to the bottom.
However, the processing liquid that comes into contact with the air near the liquid surface deteriorates faster, and the processing liquid in the processing tank has a different processing capacity due to the processing of the photosensitive material.

Further, depending on the processing solution (for example, a developing solution)
A heater is provided to raise the temperature to a predetermined temperature slightly higher than room temperature. The temperature of the processing liquid is high in the vicinity of this heater, and the temperature becomes lower as the distance increases. This temperature difference affects the processing capacity, and the processing solution in the processing tank has a different processing capacity.

In order to solve the above-mentioned problems, the treatment liquid is circulated and stirred. That is, two cylindrical members are vertically projected on the side wall of the processing tank, an inner through hole of the cylindrical member is communicated with the processing tank, and a cylindrical member projected from the suction port and the discharge port of the pump is piped. Link.

Here, by driving the pump, the processing liquid in the processing tank is sucked from the suction port and returned to the processing tank again from the discharge port. By circulating the treatment liquid in this manner, the degree of deterioration of the treatment liquid and the unevenness of temperature are eliminated, and the treatment capacity can be made uniform in the treatment tank.

[0006]

However, as for the connection between the cylindrical members by the pipes, if the press-fitting is simply performed, the processing liquid may leak due to the suction pressure or the discharge pressure and the pipes may fall out. Tightened with a hose band from the outer circumference. Since this hose band needs to be attached to all of the connecting portions, there are problems that the workability of assembling is poor and the number of parts is increased.

In view of the above facts, the present invention has an object to obtain a conduit end structure which can improve the assembling workability and reduce the number of parts.

[0008]

According to a first aspect of the present invention, there is provided a first pipe connected to a second pipe when transferring a liquid from the first pipe to the second pipe. A structure of an end portion of the passage, comprising an inner cylindrical portion that is inserted into an inner peripheral surface of the second pipeline that is integrally formed, and an outer cylindrical portion that wraps an outer peripheral surface of the second pipeline. The inner pipe portion and the outer pipe portion sandwich the second pipe line, whereby the connected state of the first pipe line and the second pipe line is maintained.

According to a second aspect of the present invention, the conduit end structure according to the first aspect is formed of an elastic member, and the tubular body is sandwiched by an outer tubular member and an inner tubular member by an elastic force, and the external member is provided. The inner peripheral surface of the cylindrical member and the outer peripheral surface of the inner cylindrical member are tapered.

According to a third aspect of the present invention, the pipeline end structure according to the first or second aspect is used in an automatic developing machine provided with a processing tank for processing a photosensitive material with a processing liquid. It is characterized in that the connected state of the pipe forming the liquid path and the cylindrical body is maintained.

[0011]

According to the first aspect of the invention, the fluid sent from the fluid transfer device such as a pump is directed toward the first pipe, for example, from the hose to the second pipe. Flow to. At this time, by inserting the tubular body between the outer tubular portion and the inner tubular portion of the hose, the tubular body can be held by the clamping force between the outer tubular portion and the inner tubular portion. This holding is larger than when the pipe is simply inserted, and the pressure of the fluid flowing in the pipe increases the close contact with the inner surface of the cylinder of the inner tubular portion, so that it does not fall off. For this reason, it is not necessary to tighten it from the outer periphery with a hose band or the like, the workability of assembly can be improved, and the number of parts can be reduced.

According to the second aspect of the present invention, since the pipe joint is formed of the elastic member and the outer tubular portion and the inner tubular portion are tapered, the clamping force of the tubular body is further increased. Can be strong.

According to the third aspect of the present invention, it is used in an automatic developing machine provided with a processing tank for processing a photosensitive material with a processing liquid, and a cylinder is provided between an outer cylinder part and an inner cylinder part of a branch line. The body is inserted and the connection is maintained by the clamping force between the inner part and the inner cylinder part, and the clamping force is further increased by the liquid transfer device, for example, the pressure of the processing liquid formed from the pump through the pipeline to the cylindrical body. The pipe and the cylinder are connected.

Therefore, the workability of assembling can be improved, the number of parts can be reduced, and the connection between the pipe and the cylindrical body can be strengthened. Further, the processing liquid does not leak from the connecting portion.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an automatic processor 1 to which the present invention is applied.
A schematic structural diagram of the No. 0 processing tank portion is shown.

The casing 12 is provided in the automatic processor 10.
1 is provided with an insertion port 16 into which the photosensitive material 14 is inserted. A pair of rollers 1 is provided inside the insertion opening 16.
8 is provided, and is rotated by a driving means (not shown).

Therefore, the photosensitive material 14 inserted through the insertion port 16 is sandwiched between the pair of rollers 18 to give a conveying force.

The photosensitive material 14 conveyed by the driving force of the pair of rollers 18 is guided to the processing section 20 installed inside the automatic developing machine 10.

The processing section 20 is provided with a plurality of processing tanks, and from the right of FIG.
The fixing tank 28, the rinse tank 30, and the water washing tank 32 are used.

The developing tank 24, the fixing tank 28, and the washing tank 32 (hereinafter collectively referred to as a processing tank 34) store a developing solution, a fixing solution, and washing water, respectively, and a rinse tank 26.
For cleaning water (eg water or acetic acid solution), rinse tank 3
In FIG. 0, wash water (for example, water) is supplied from each storage tank (not shown) through a pump and a rinsing tank 26, 3 through a pipe line.
0 is supplied with cleaning water, and the supplied cleaning water is used for the rinse tank 2
The notch provided in the upper part of the tank wall on the overflow tank side out of the tank walls 6 and 30 overflows into the overflow tank.

When the washing water is water, a pipe is provided from the water supply to the rinse tanks 26 and 30 directly through the solenoid valve without using a storage tank so that water is supplied to the rinse tanks 26 and 30. May be.

A rack 3 is provided in each processing tank 24, 28, 32.
4 are arranged, and a plurality of pairs of rollers 36 for sandwiching the photosensitive material 14 and carrying it along a predetermined carrying path are provided.

A crossover rack 46 having a rinse rack is arranged above the processing tank portion in FIG. This crossover rack 46 has its rinse tanks 26, 3
And rollers 38 and 40 above the photosensitive material 14
Is sandwiched and guided to the next adjacent processing tank portion, and the processing liquid adhering to the photosensitive material is squeezed out.

Photosensitive material 14 that has been washed in the washing tank 32
Are conveyed by a pair of conveying rollers 42 to a drying section 45 arranged in parallel in the processing section 20. In the drying section 45, the photosensitive material 14, which has been washed with water in the washing tank 32, is nipped and conveyed in a horizontal direction in the drying section 45 by a plurality of rollers 44.

Chambers 68 are respectively arranged in the drying unit 45 in the vertical direction of the conveying path of the photosensitive material 14. The warm air from the fan 74 heated by the heater 72 is supplied to the chamber 68 via the duct 70.

A plurality of slits 76 are provided on the surface of the chamber 68 facing the conveying path of the photosensitive material 14, and the warm air sent to the chamber 68 is directed from the slit 76 toward the photosensitive material 14. Will be ejected. Therefore, the photosensitive material 14 is dried by warm air and discharged from the discharge port 47 to the outside of the machine.

The processing capacity of the developing solution and the fixing solution stored in the developing tank 24 and the fixing tank 28 is deteriorated due to the processing of the photosensitive material 14 and the oxidation due to exposure to air. Since it is preferable that this deterioration be uniform in the treatment tank, the treatment liquid is circulated and stirred by the pump 310.

FIG. 2 shows a pump 310 attached to the developing tank 24. Since other pumps such as the pump 310 on the fixing tank 28 side have the same shape and the same assembling state, the configuration on the developing tank 24 side will be described and the description on the fixing tank 28 side will be omitted.

As shown in FIG. 2, the side wall 3 of the developing tank 24.
Two through holes 314 and 316 are formed in the upper and lower direction in the unit 12.

Cylindrical members 318 are integrally formed outside the side walls 312 at the peripheral edges of the through holes 314 and 316, respectively.

The cylindrical member 318 of the lower through hole 314 is
A pipe 320 made of synthetic resin is connected to the cylindrical member 324 protruding from the suction port 322 of the pump 310, and the developing tank 24 and the pump suction port 322 are communicated with each other.

As shown in FIG. 3, the pump 310 has a disk-shaped pump casing 328 in which a pump chamber 326 is formed inwardly and an impeller 332 having a magnet built therein is disposed.
And the pump casing 328 and the back casing 3
33 and a motor drive unit 330 that is continuous with the drive magnet 335. An impeller 332 having a built-in magnet is arranged in the pump chamber 326, and the driving magnet 33 is driven by the driving force of the motor driving unit 330.
5 rotates, whereby the impeller 332 is rotated.

The suction port 322 is provided at the axial center of the impeller 332, and the developer can be sucked in by the rotation of the impeller 332. The sucked developing solution is pumped by the centrifugal force corresponding to the rotation of the impeller 332 to the pump chamber 326.
You will be guided to the outer periphery of.

A discharge port 334 is provided tangentially on the outer periphery of the pump casing 328. The discharge port 334 has a cylindrical member 336 integrally formed on the outer periphery of the pump casing 328. The cylindrical member 336 is attached to the through hole 316 on the upper side of the developing tank 24.
18 and the pipe 338, and the pump discharge port 3
34 and the developing tank 24 are in communication with each other.

Pipe 338 as shown in FIGS. 4 and 5.
Has an outer cylindrical portion 340 in which one end portion corresponding to the cylindrical member 318 on the developing tank 24 side is enlarged in diameter. This outer cylinder part 3
An inner cylindrical portion 342 having the same diameter dimension as the other end portion of the pipe 338 connected to the cylindrical member 336 on the pump 310 side is formed inside 40. That is, the pipe 33
One end of 8 has a double cylindrical shape including an outer cylinder portion 340 and an inner cylinder portion 342.

Between the outer cylinder 340 and the inner cylinder 342,
A cylindrical member 318 on the developing tank 24 side is fitted. Here, the inner peripheral surface of the outer tubular portion 340 and the outer peripheral surface of the inner tubular portion 342 are tapered so that the gap dimension gradually increases toward the tip, and the gap dimension c of the pipe tip portion, Assuming that the dimension of the gap on the cylindrical member 336 side is d, the thickness of the root of the cylindrical member 318 is a, and the thickness of the tip is b, then d
The relationship of <b <c ≦ a is established.

Therefore, by inserting the cylindrical member 318 into the gap 341, the cylindrical member 318 is sandwiched between the outer cylindrical portion 340 and the cylindrical portion 342, and is retained by this clamping force.

The holding force is equal to or more than that when it is clamped and held from the outer circumference of the pipe by another member such as a hose band.

The outer cylinder 340 and the inner cylinder 342 may have the same shape on the side of the gap 341 and the cylindrical member 318.

As shown in FIG. 2, the pump 310 is in a state where the pump casing 328 is on the lower side and the motor drive section 330 is on the upper side, that is, the axis L of the pump 310 is slightly inclined with respect to the perpendicular X (this embodiment). Then, with the inclination angle of 5 °), the pump casing 3 is attached by the flange 344.
It is fixed at 28.

As shown in FIG. 6, the mounting in the inclined state has a role of communicating the air reservoir space S generated during circulation of the developer in the pump chamber 326 with the discharge port 334. That is, the developer sucked from the developing tank 24 may contain bubbles, and air may accumulate in the pump chamber 326 with time. Since the air reservoir space is communicated with the discharge port 334, the air is discharged from the discharge port 33.
4 will be discharged, and the amount of air accumulation will be suppressed.

The operation of this embodiment will be described below. First,
An ordinary processing procedure for a photosensitive material will be described.

When the photosensitive material 14 is inserted into the insertion port 16, the photosensitive material 14 is nipped and conveyed by the conveying roller 18, guided by the guide surface of the crossover rack 46, and conveyed into the developing tank 24. In the developing tank 24, it is nipped by rollers 36 provided on the rack 34, and is transported in a substantially U-shape in the developing solution in the developing tank 24 and discharged.

The photosensitive material 14 discharged from the developing tank 24 is conveyed by rollers 38 provided above the rinsing tank 26 and is washed with cleaning water, and then guided by the guide surface of the crossover rack 46 to be fixed in the fixing tank. It is transported to 28. In the fixing tank 28, it is conveyed in a substantially U-shape like the conveying path in the developing tank 24. The photosensitive material 14 discharged from the fixing tank 28 is cleaned by cleaning water while being conveyed by the rollers 40 above the rinsing tank 30, and reaches the washing tank 32, where the developing tank 24 and the fixing tank 2 are provided.
As in the case of No. 8, it is conveyed in a substantially U-shape in the washing tank 30 to be washed.

The photosensitive material which has been washed with water is transported to the drying section 45 by the transport rollers 42. Photosensitive material 1
While being conveyed in a substantially horizontal state by the conveyance rollers 44, the No. 4 is sprayed with warm air and dried, and is discharged from the discharge port 47 to the outside of the machine.

Here, a pump 310 is attached to the developing tank 34, the fixing tank 28, etc., and the developing solution, the fixing solution, etc. are circulated and stirred by the driving force of the pump 310.
For this reason, there is no unevenness in the degree of deterioration between the developer and the fixer on the liquid side of the processing tank and the developer and the fixer on the bottom, and the degree of deterioration is uniform. Further, the temperature becomes uniform, and uneven processing can be prevented.

The processing liquid circulation system using the pump 310 will be described below. The developing tank 24 will be described as an example.
This can be applied to other processing tanks such as the fixing tank 28.

When the impeller 332 is rotated by the driving force of the motor driving section 330 of the pump 310, the impeller 33 is rotated.
Due to the pressure difference between the shaft center portion of No. 2 and the outer circumference of the pump chamber 326, the through hole 3 at the lower side of the suction port 322 provided at the shaft center portion is provided.
The developer at the bottom of the developing tank 24 is sucked from 14 through the pipe 320. The sucked developer is centrifugal force,
It is guided to the outer periphery of the pump chamber 326 and discharged from the discharge port 334.

The discharged developing solution passes through the pipe 338 and the cylindrical member 318 from the upper through hole 316 to the developing tank 24.
Returned to the top of.

At this time, since the discharge pressure of the developing solution from the discharge port 334 is applied to the joint portion between the pipe 338 and the cylindrical member 318, conventionally, another member such as a hose band is used to tighten the outer periphery of the pipe. However, in the present embodiment, the joint portion of the pipe 338 with the cylindrical member 318 has a double structure of the outer tubular portion 340 and the inner tubular portion 342, and the cylindrical member is provided between the outer tubular portion 340 and the inner tubular portion 342. 318 was fitted.

Since the inner peripheral surface of the outer cylindrical portion 340 and the outer peripheral surface of the inner cylindrical portion 342 are tapered, the cylindrical member 318 fitted between them is in accordance with the fitted amount, the outer cylindrical portion 340.
It is possible to increase the clamping force by the inner cylinder portion 342, and it is possible to obtain a clamping force equal to or higher than that in the state in which the hose band is tightened in the completely fitted state.

As a result, the work of tightening with a separate member (hose band) can be omitted, the workability of assembling can be improved, and the number of parts can be reduced.

Further, the pump 310 of this embodiment is attached to the casing 12 in a state in which the axis L of the impeller 332 has an inclination angle of 5 ° with respect to the perpendicular X.

The pump 310 using the impeller 332 is
To set the axis L of the impeller 332 in a horizontal state,
Generally, in such a mounting state, the pump casing 328 and the motor driving unit 330 are extended in the lateral direction of the device, which leads to expansion of the installation space.

In order to minimize the installation space,
Although the axis L of the impeller 332 is set to the perpendicular X direction, in the present embodiment, the ceiling L of the pump chamber 326 is tilted by inclining the axis L by 5 ° with respect to the perpendicular X.
The gas such as air accumulated in the upper portion of the pump chamber 326 on the side of the motor drive unit 330 is smoothly discharged from the discharge port 334.

That is, when the amount of bubbles contained in the developer sucked from the suction port 322 reaches a predetermined amount (amount that does not cause a drastic reduction in circulation amount or air lock), the air reservoir space S
Communicates with the discharge port 334, and air is discharged from the discharge port 334. Therefore, the amount of air that affects the pump capacity does not accumulate in the pump chamber 326, and the circulation can be performed smoothly and reliably.

As described above, in this embodiment, the pump 310 is used.
By tilting the axis line L of the impeller 332 of 5 ° with respect to the perpendicular line X, the installation space is reduced and the pump 31
It is possible to maintain a circulation capacity of zero.

[0058]

As described above, the conduit end structure according to the present invention has an excellent effect that the assembling workability is improved and the number of parts can be reduced.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an automatic developing machine according to the present embodiment.

FIG. 2 is a side view showing a mounted state of the pump.

FIG. 3 is an exploded perspective view showing an outline of a pump.

FIG. 4 is a perspective view showing one end of a pipe connecting a pump discharge port and a processing tank.

5 is a sectional view taken along line VV of FIG.

FIG. 6 is a side sectional view showing a state of an air reservoir space and a discharge port in a pump chamber.

[Explanation of symbols]

 10 Automatic Developing Machine 12 Casing 14 Photosensitive Material 318 Cylindrical Member 338 Pipe 340 Outer Cylinder 342 Inner Cylinder

Claims (3)

[Claims] 1. A structure of an end portion of a first pipeline connected to a second pipeline when a liquid is transferred from the first pipeline to the second pipeline, which is integrally molded. And an outer cylinder part that encloses the outer peripheral surface of the second conduit, the inner cylinder part being inserted into the inner peripheral surface of the second conduit, and the outer cylinder part enclosing the outer peripheral surface of the second conduit. A pipe end structure, characterized in that the connected state of the first pipe and the second pipe is maintained by sandwiching the two pipes. 2. The conduit end structure according to claim 1, wherein the conduit end structure is formed of an elastic member, and the cylindrical body is sandwiched by an outer cylinder member and an inner cylinder member by an elastic force, and the inner peripheral surface of the outer cylinder member is formed. A conduit end structure characterized in that the outer peripheral surface of the inner cylinder member is tapered. 3. The pipe for forming a processing liquid path, wherein the pipe end structure according to claim 1 or 2 is used in an automatic processor provided with a processing tank for processing a photosensitive material with a processing liquid. A conduit end structure, characterized in that a connection between a conduit and the cylindrical body is maintained.