JPH0520230B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Application Field) This invention is a method of dropping a hose cap, into which an E-type retaining ring having an outer diameter larger than the outer diameter of each part is driven, with the axial direction facing up and down. , relates to a device for detecting whether an E-shaped retaining ring is driven in as specified.

(Prior art) With a hose cap attached to the end of a hose, when the hose is assembled to a mating member, the hose cap does not move during assembly, and the hose cap is fixed to a bracket etc. provided at the assembly site. In order to achieve this, an E-shaped retaining ring having a larger outer diameter than the flange, sleeve, or other parts used for fixing is sometimes driven into the annular groove provided in the flange.

Conventionally, methods for detecting whether the E-type retaining ring has been driven in as specified have been by visual inspection, or because the process of driving in the E-type retaining ring is carried out after the hose cap is fastened to the hose S. , there was a method using the detection tool 7 and detection chute 9 shown in FIGS. 7 and 8.

The method of using the detection tool 7 shown in FIG. 7 is to hold the hose S by hand and insert the hose cap 1 fastened to the end of the hose S into the detection hole 8 of the detection tool 7. . By the way, the detection hole 8 of the detection tool 7
The large diameter portion 8a is formed to be slightly larger than the outer diameter of the E-shaped retaining ring 6, and the small diameter portion 8b is formed to be smaller than the outer diameter of the E-shaped retaining ring 6 and slightly larger than the outer diameter of the flange portion 3, etc. If the E-shaped retaining ring 6 is not driven into the hose cap 1 when the hose cap 1 is inserted into the detection hole 8, the hose cap 1 will enter the detection hole 8 all the way, and the detection will be based on that insertion distance. Was. Note that 2 is a sleeve portion, and 5 is a socket portion to which a mating member is assembled.

The method shown in FIG. 8 uses a detection chute 9 having a gap 9a smaller than the outer diameter of the E-type retaining ring 6 and larger than the outer diameter of the flange portion 3, etc., and this detection chute 9 is connected to an E-type retaining ring driving machine. The hose fitting 1 connected to the hose S was conveyed to the detection chute 9. If the E-shaped retaining ring 6 is not driven into the hose cap 1 during transportation, the hose cap 1 will fall from the detection chute 9, and the presence or absence of the fall is detected.

(Problems to be Solved by the Invention) However, the conventional visual inspection method and the method using the detection tool 7 require manual labor and are inefficient.

Further, in the conventional method using the detection chute 9, a space for the hose S is required because the hose S is attached and the weight of the hose S is used for conveyance.

By the way, in a so-called two-way cap where the hose cap is used at an intermediate location between two hoses, after the two hoses are fastened to both ends of the hose cap, an E-shaped retaining ring is automatically driven into the hose cap. This makes positioning difficult and difficult, so drive an E-type retaining ring into the hose cap alone, and then
It was necessary to fasten the hose. Then, drive the E-shaped retaining ring into the hose cap in advance,
When detecting the presence or absence of an E-type retaining ring before tightening it with the hose after driving it in, use the detection tool 7 described above.
In the case of a device that uses the detection chute 9, it is difficult to hold the hose cap when inserting it into the detection hole 8, and in a device that uses the detection chute 9 described above,
There was a problem in that the detection chute 9 lost its balance and swayed during transportation, and even if the E-shaped retaining ring was driven in as specified, the hose cap would fall from the gap 9a.

This invention solves the problems mentioned above.
To provide a detection device capable of automatically detecting an E-shaped retaining ring driven into a hose mouthpiece before being fastened to a hose, having a simple structure, and saving space.

(Means for Solving the Problems) The E-type retaining ring detection device according to the present invention has a hose cap in which an E-type retaining ring having an outer diameter larger than the outer diameter of each part is driven, and the axial direction is in the vertical direction. This is a device that detects whether the E-type retaining ring is driven in as specified by dropping the hose into the detection box. Forms a tapered part that narrows from the top to the bottom to stop the hose cap from falling, and further stops when the E-shaped retaining ring is driven in as specified and inserted into the detection hole. The above-mentioned problem is solved by setting the lower end of the hose cap as a reference position and providing a detection section in which two detection switches for detecting the presence or absence of the hose cap are placed at upper and lower positions between the reference position. be.

(Operations and Effects of the Invention) In the E-type retaining ring detection device according to the present invention, a single hose cap with an E-type retaining ring driven into it as specified is dropped into the detection hole of the detection box with the axial direction facing up and down. Then, the outer periphery of the E-shaped retaining ring is locked at the tapered portion of the detection hole, and the lower end of the hose cap is placed at the reference position, thereby stopping the hose cap from falling. Then, the detection switch above the reference position detects the presence of the hose cap, and the detection switch below the reference position detects the absence of the hose cap, and the detection switch above the reference position detects the presence of the hose cap. By detecting the presence of the hose cap and detecting the absence of the hose cap by the lower detection switch, it is possible to automatically detect that the E-shaped retaining ring is driven into the hose cap as specified.

If the E-shaped retaining ring is not driven into the hose cap as specified, the lower end of the hose cap will shift upward or downward from the reference position when the hose cap is dropped into the detection hole of the detection box. Since the upper and lower detection switches both detect the presence of the hose cap, or both detect the absence of the hose cap, it is automatically detected that the E-type retaining ring is not driven into the hose cap as specified. can be detected.

Therefore, the E-type retaining ring detection device according to the present invention has a simple structure consisting of a detection box having a predetermined detection hole and a detection section, and the E-type retaining ring is automatically driven into the hose mouthpiece in a predetermined manner. Furthermore, it does not require a large space because it can be detected by the hose cap alone, rather than by tightening the hose.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

Detection device 31 of the first embodiment shown in FIGS. 1 to 3
is placed below the E-type retaining ring driver 10. Incidentally, the E-type retaining ring driving machine 10 is equipped with a driving pawl 13 for the E-type retaining ring 6 that is driven in the horizontal direction on a base 12, and the base 12 in front of the driving pawl 13 is
Holder 1 on which a large number of E-shaped retaining rings 6 are accumulated
1, further provided with a support stand 14 below the front of the base 12, and a presser claw 15 which is movable above the support stand 14 in the horizontal direction and capable of supporting the vicinity of the upper part of the flange portion 23 of the hose cap 21. There is. Then, the flange portion 2 of the hose cap 21 that is sent onto the support stand 14 and supported by the presser claw 15
The hammering pawl 13 moves to drive the E-shaped retaining ring 6 into the annular hole 23a of No. is moved into the guide tube 16, and the hose cap 21 is dropped from the guide tube 16 with its axial direction facing up and down. The hose cap 21 used in the embodiment is a so-called two-way cap, and includes sleeve portions 22 and 25 at both ends, and after the E-shaped retaining ring 6 is driven in and the hose S is fastened to both ends, As shown in the figure, it is inserted into an insertion hole 27a of a predetermined bracket 27, and a U-shaped clip 28 is inserted into a groove 24 formed in the hose cap 21 to be fixed.

The detection box 32 of the detection device 31 has a rectangular prism-like outer shape when the two are put together, and is divided into two along the axial direction, forming a substantially circular detection hole 33 whose axis is in the vertical direction. Two cylindrical members 32
a, 32b.

The detection hole 32 has an opening 33a larger than the outer diameter of the E-shaped retaining ring 6, and a lower opening 33b smaller than the outer diameter of the hose cap sleeve portion 22.
Further, a tapered portion 33c that becomes narrower from above to below is formed at an intermediate portion between the upper opening 33a and the lower opening 33b. When the hose cap 21 into which the E-shaped retaining ring 6 is driven is dropped into the detection hole 33, the tapered portion 33c
It is formed so that only the outer periphery of the locking shaft 6 is locked to stop the hose cap 21 from falling. In addition,
In the detection hole 33 of the embodiment, a circular hole portion 33d having a larger outer diameter than the sleeve portion 22 is formed between the tapered portion 33c and the lower opening portion 33b.

A hose cap 21 with an E-shaped retaining ring 6 driven into the cylinder member 32a, 32b in a predetermined manner is inserted into the detection hole 3.
The reference position
Upper through holes 34a, which penetrate each other in the horizontal direction and intersect with the detection hole 33, are located at upper and lower positions between the
34b, and lower through holes 35a and 35b are bored.

Furthermore, as shown in FIGS. 2 and 3, holding rods 39a and 39b are fixed to the cylinder members 32a and 32b, and the holding rods 39a and 39b are connected to the air chuck 4 fixed to the frame 31a of the detection device 31.
0 piston rods 40a and 40b, respectively. And this air chuck 40
Due to the operation of the piston rod 40a, the piston rod 40a moves to the right in FIG.
move to the left in Fig. 2, and the respective retaining rods 39
a, 39b as shown in FIG.
2a and 32b are separated, and at the time of separation, the detection hole 3
The hose cap 21, which has been stopped at the tapered portion 33c in the hose 3, is allowed to fall downward.

Furthermore, the upper through hole 34 of the cylindrical members 32a, 32b
A, 34b and lower through-holes 35a, 35b are opposed to each other on the lower side of the detection box 32, which consists of a light projector/receiver, or a light emitting diode/phototransistor, etc., and detects at the upper and lower positions of the reference position X, respectively. Hose cap 21 inserted into hole 33
Photoelectric switches 37 and 38 are arranged to function as detection switches for detecting whether or not the . These photoelectric switches 37 and 38 are connected to a detection circuit of a detection section 36. Detector 36
is interlocked with the E-type retaining ring driver 10, and
It is considered normal when the upper photoelectric switch 37 is on and the lower photoelectric switch 38 is off, and it is considered abnormal when the other photoelectric switches 37 and 38 are both on or off.
0 to activate the cylinder members 32a, 32.
b are separated for a predetermined time and then brought together again to form a detection hole 33, and the hose cap 21 into which the next E-shaped retaining ring 6 is driven is inserted into the detection hole 33. In addition, in the event of an abnormality, the air chuck 40 without activating the alarm lamp and alarm buzzer (not shown), and E-type retaining ring driver 1.
0 is configured to stop the operation.

The photoelectric switches 37, 38, etc. are each fixed to a bracket 41 fixed to the frame 31a, and a guide pin 41 is provided protruding from each bracket 41, and the guide pins 42, 42 are connected to the cylinder members 32a, 32b, respectively. The guide holes 43a and 43b are inserted into the guide holes 43a and 43b to assist in separating the cylindrical members 32a and 32b in a predetermined direction. Further, a chute 44 is disposed below the detection box 32, and is configured to send the hose cap 21 falling from the detection device 31 to the next process where it is fastened to the hose S.

Therefore, in the detection device 31 of the first embodiment,
E-type retaining ring 6 as specified with E-type retaining ring driver 10
When the hose cap 21 that has been driven in falls from the guide tube 16, it is thrown into the detection hole 33, and the outer periphery of the E-shaped retaining ring 6 is locked by the tapered portion 33c in the detection hole 33, and the hose cap 21 is inserted into the detection hole 33. will be stopped. At this time, the detection unit 36 detects the photoelectric switch 3
7 is turned on and the photoelectric switch 38 is turned off, it is detected as normal, so the signal from the detection section 36
The air chuck 40 operates, and the cylindrical members 32a, 3
2b is separated and the hose cap 21 is dropped into the chute 44 below, and then the cylindrical member 32 is
A, 32b can be combined to form a detection hole 33, which can receive the hose cap 21 to be inserted next.

For example, if the E-shaped retaining ring 6 is not driven into the hose cap 21 from the guide tube 16, when the hose cap 21 is inserted into the detection hole 33, the lower opening of the detection hole 33 will open. The lower end of the hose cap sleeve part 22 is stopped at the upper peripheral edge of the hose cap 33b, and the photoelectric switches 37 and 38 are both turned on in the detection part 36 to detect an abnormality. Therefore, the air chuck 40 does not operate, the E-type retaining ring driver 10 also stops operating, and the alarm lamp and alarm buzzer operate. Then, the operator manually operates the air chuck 40 to drop the hose cap 21 into the chute 44,
The hose cap 21 can be taken out from the outlet 44a of the chute 44. Also, hose cap 2
If the E-type retaining ring 6 is not properly driven into the detection hole 33, the outer diameter of the E-type retaining ring 6 will increase when the hose cap 21 is inserted into the detection hole 33. The hose cap 21 is disposed above the reference position X, and the hose cap 21 is stopped.
7 and 38 are both turned off to detect an abnormality, which is dealt with by the same operations as described above. In addition, in order to detect a state in which the E-shaped retaining ring 6 is not properly driven into the hose cap 21, it is desirable that the upper and lower photoelectric switches 37 and 38 be provided close to each other with the reference position X in between.

As described above, the detection device 31 of the first embodiment can automatically detect whether or not the E-type retaining ring 6 is driven into the hose cap 21 as specified, which is efficient. 21 can be detected by itself, so it does not require a large space.

In addition, in the detection device 31 of the first embodiment, when the detection unit 36 detects an abnormality, the defective product is manually removed, but as shown in FIGS. 4 and 5, it is automatically removed. It may be configured to take out defective products.

In the detection device 51 of the second embodiment shown in FIG. 4, a defective product discharge chute 45 is disposed on the side of a chute 44 that is sent to the next process where the hose S is fastened, and the frame of the device 51 itself is connected to a rail or the like. The detection box 32 can be moved above the defective product ejection chute 45 by moving it via a driving means, and the defective product ejection chute 4 is moved from above the chute 44 by detecting an abnormality in the detecting section similar to the first embodiment (not shown).
5 Move the detection box 32 upward to separate the cylindrical members 32a and 32b, and detect the defective hose cap 2.
1 is dropped, and then the detection box 32 is placed below the guide tube 16. With this configuration, defective products can be automatically removed and an E-type retaining ring can be driven. Work efficiency is improved because there is no need to stop the machine.

Further, the detection device 61 of the third embodiment shown in FIG.
The defective product discharge chute 45 is arranged on the front side of the chute 44, and the detection box 32
Photoelectric switches 37, 3 are mounted on the cylindrical members 32a, 32b.
The detection unit 66 consisting of 8, etc. is fixed, and the frame 61a of the device 61 itself is connected to rotation drive means such as a rotary actuator to make the detection box 32 rotatable. , the detection box is rotated so that the upper opening 33a of the detection hole 33 is positioned from below the guide cylinder 16 to above the defective product discharge chute 45, and the defective hose cap 21 is discharged to the discharge chute 45, and then returned to its original position. This is configured to return to the second
The same effects as in the embodiment are achieved.

In addition, in the first to third embodiments, the detection box 32
is composed of two members, cylindrical members 32a and 32b, and by the operation of the air chuck 40, the cylindrical members 32a,
32b is separated and the hose cap 21 is dropped into the chute 44, the detection box is integrated and the detection box is made rotatable as shown in FIG. The cap may be ejected.

Further, in the first to third embodiments, the photoelectric switches 37 and 38 are used to detect the presence or absence of the hose cap 21 stopped in the detection hole 33, but in addition, a proximity switch may be used. Alternatively, a detection switch or an ultrasonic switch may be used, and furthermore, these detection switches may be arranged on the inner peripheral surface of the detection hole.

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view of a detection device showing a first embodiment of the present invention, FIG. 2 is a plan view of the same embodiment, and FIG.
The figure is a plan view showing the operating state of the same embodiment, FIG. 4 is a schematic diagram showing the operating state of the second embodiment, FIG. 5 is a schematic diagram showing the operating state of the third embodiment, and FIG. 6 is a schematic diagram showing the operating state of the third embodiment. A diagram showing how the hose cap used in the example is used,
FIGS. 7 and 8 are diagrams showing conventional detection methods, respectively. 1, 21... Hose cap, 2, 22, 25...
Sleeve part, 3, 23...Flange part, 6...E
Type retaining ring, 31, 51, 61...Detection device, 32
...Detection box, 33...Detection hole, 36, 66
...detection section, 37, 38 ... (detection switch) photoelectric switch, S ... hose, X ... reference position.

Claims (1)

[Claims] 1. Insert a single hose cap into which an E-type retaining ring with an outer diameter larger than the outer diameter of each part is driven in, with the axial direction facing up and down, and detect whether the E-type retaining ring is driven in as specified. The device includes a detection box having a detection hole into which the hose cap is inserted, and the detection hole locks only the outer periphery of the E-shaped retaining ring to stop the hose cap from falling. A tapered portion is formed that becomes narrower toward the end, and the lower end of the hose mouthpiece is set as a reference position, which stops when the E-shaped retaining ring is driven in as specified and inserted into the detection hole,
An E-type retaining ring detection device characterized by comprising a detection section in which two detection switches for detecting the presence or absence of the hose cap are arranged at upper and lower positions between the reference position.