JP2734920B2 - Payoff reel sleeve automatic insertion device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sleeve automatic insertion device for automatically fitting a sleeve to a mandrel of a pay-off reel.

[0002]

2. Description of the Related Art As means for externally fitting a sleeve to a mandrel of a pay-off reel, a sleeve insertion device as shown in FIG. 8 is conventionally used. In this apparatus, a sleeve 4 is mounted on a coil car 3 installed on a carriage 1 by a fluid pressure cylinder 2 so as to be able to move back and forth in the mandrel axis direction, and a plurality of photo sensors 5-1 and 5-2 and a coil car 3 are mounted. The movement amount detector (PLG) 6 detects the length of the sleeve 4 and the position on the coil car, and calculates and controls the movement amount of the coil car by the arithmetic and control unit 7 to attach the sleeve 4 to the line center 9 of the mandrel 8. This is a mechanism for positioning and inserting.

That is, in the case of this sleeve insertion device, first, the sleeve 4 is placed on the coil car 3 and the coil car 3 is moved to the mandrel 8 side by the fluid pressure cylinder 2 so that the sleeve 4 starts passing through the photo sensor 5-1. Sleeve 4 from the coil car movement amount until the end
Is calculated by the arithmetic and control unit 7, and the coil car 3 is advanced according to the length to move the sleeve 4 to the photo sensor 5-1. Then, the photo sensor 5-
From the position 1, the distance required for the mandrel center and the sleeve center to coincide with each other is calculated by the arithmetic and control unit 7, and the necessary current value is indicated to the servo valve SV of the hydraulic cylinder 2 according to the calculated value. 2, the coil car 3 is moved by a predetermined amount and the sleeve 4 is inserted into the mandrel 8.

[0004]

The length of the sleeve to be inserted into the mandrel of the pay-off reel is usually 3 to 5 types, and is used depending on the product. Therefore, as in the above-described conventional sleeve insertion device, the method of detecting the length of the sleeve and the position of the sleeve on the coil car and controlling the coil car movement amount by combining a photo sensor and a movement amount detector such as PLG is not used. In addition, there is a disadvantage that an arithmetic and control unit for controlling the length of the sleeve and a change in the position of the sleeve on the coil car is complicated and expensive.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks of the conventional device, and does not require a complicated and expensive control device as in the prior art. An object of the present invention is to propose a sleeve automatic insertion device which can be inserted into a mandrel with high precision by means.

[0006]

The present invention relates to a system in which a sleeve is inserted into a mandrel by combining a pusher and a proximity switch such as a limit switch.
A sleeve mounting table opposed to the mandrel in the axial direction, a pusher for moving the mounting table back and forth in the mandrel axial direction, and a first-stage sleeve pressing claw provided on the pusher or the sleeve mounting table for positioning the rear end of the sleeve And a second stage sleeve pressing claw for sleeve centering, a pusher positioning detection switch, and a pusher control device. The pusher positioning detection switch and the control device allow the pusher movement stroke to be adjusted according to the length of the sleeve. It is characterized in that it is configured to be controlled.

[0007]

The sleeve mounting table is provided integrally with a pusher for moving the mounting table back and forth in the axial direction of the mandrel. The first-stage sleeve pressing claw for positioning the rear end of the sleeve is fixed to a pusher or the rear end of the sleeve mounting table. The second-stage sleeve pressing claw for sleeve centering is elastically supported at a substantially central portion of the sleeve mounting table so as to be pushed upward by a spring or the like so that when the sleeve is mounted on the sleeve mounting table, it is pushed down by its weight. Installed.

[0008] The pusher positioning switch is
Even if the sleeve is placed on the sleeve mounting table on the pusher at different positions in the axial direction of the mandrel, it will always be a reference point (the pusher advance limit) for positioning it at the center of the mandrel. The pusher stops at this switch position Is controlled as follows.

When the pusher is advanced while the sleeve is mounted on the sleeve mounting table, the sleeve on the mounting table is pushed by the first-stage sleeve pressing claws to move, and the pusher is moved to the position by the positioning detection switch. The sleeve rear end is always set at a predetermined position. Next, when the pusher is retracted, the second-stage sleeve pressing claw pressed by the sleeve is released from the sleeve and is pushed upward by the action of the spring. When the pusher is advanced again in this state, the sleeve is further pushed by the second-stage sleeve pressing claw, and the sleeve is set at the center of the mandrel when the pusher stops at its advance limit.

In the present invention, according to the length of the sleeve,
By providing the pusher positioning detection switch at the point where the center of the sleeve coincides with the center of the mandrel, the sleeve can always be accurately inserted into the mandrel even if the position of the sleeve in the axial direction of the mandrel varies.

[0011]

FIG. 1 is a schematic view showing an apparatus according to an embodiment of the present invention and a control system thereof, and FIG. 2 is an enlarged view of a sleeve mounting table in the same apparatus, in which a pusher with a sleeve mounted is shown. 3 to 7 are explanatory views of the operation of the above device. FIG. 3 shows a state in which the sleeve is placed on the pusher body, FIG. 4 shows a state in which a part of the sleeve is inserted into the mandrel, and FIG. FIG. 6 shows a state in which the rear end of the sleeve is positioned, FIG. 6 shows a state in which the pusher is retracted, and FIG. 7 shows a state in which the sleeve is inserted into the center of the mandrel.
Here, the case where the pusher is of a two-stage upper and lower type will be described as an example. In the figure, 11 is a pusher, 11-1 is a lower pusher, 11-2 is an upper pusher, 12 is a sleeve mounting table, 13-1 is a first-stage sleeve pressing claw for positioning the rear end of the sleeve, and 13-2 is a sleeve centering. For second
Step sleeve pressing claw, 14-1 is a hydraulic cylinder for the upper pusher, 14-2 is a hydraulic cylinder for the lower pusher,
15-1 is lower limit pusher forward limit switch, 15
-2 is upper pusher advance limit switch, 15-3
Is a lower limit switch for lowering the pusher, 15-4 is a limit switch for lowering the upper pusher, and 16 is a control device.

As shown in the figure, the pusher 11 has an upper pusher 11-2 slidably mounted on a lower pusher 11-1 and a respective hydraulic cylinder 14-1, 1
According to 4-2, it is structured to move forward and backward independently.

The sleeve mounting table 12 has an upper pusher 11-
2 and a second-stage sleeve pressing claw 13-2 for sleeve centering is provided at the center thereof. As shown in FIG. 2, the second-stage sleeve pressing claw is pivotally connected at one end to a sleeve mounting table 12 by a fulcrum pin 17 so as to be vertically rotatable, and has a multi-end elastically supported by a spring 18. . That is, the second-stage sleeve pressing claw 13-2 is
When the sleeve 4 is placed on the mounting table 12, it is pressed downward against the spring 18, and the pusher 11 is retracted and separated from the sleeve 4, and is attached by the spring 18 so as to protrude upward. On the other hand, a first-stage sleeve pressing claw 13-1 for positioning the rear end of the sleeve projects from the rear end of the upper pusher 11-2.

The control device 16 is a device for controlling the forward and backward movement of the pusher 11, and instructs a required current value to each of the servo valves SV1 and SV2 of the lower pusher 11-1 and the upper pusher 11-2. 1 and an apparatus for moving the upper pusher 11-2 forward and backward by a predetermined stroke.

Next, a procedure for inserting and setting the sleeve into the mandrel by the above-described device will be described with reference to FIGS.

As shown in FIG. 3, the sleeve mounting table 12
The sleeve 4 is placed thereon. Since this work is generally performed by a crane, its mounting position varies in the axial direction of the mandrel.

When the sleeve is placed, as shown in FIG. 4, the lower pusher 11-1 is connected to the hydraulic cylinder 14
Extrude to the vicinity of the mandrel 8 by -1. When the tip of the lower pusher 11-1 comes to the position of the pusher advance limit switch 15-1, the switch is turned on and the control device 16 stops the pusher. At this time, a part of the sleeve 4 is inserted into the mandrel 8. It goes without saying that the insertion length varies depending on the length of the sleeve.

Subsequently, as shown in FIG. 5, the upper pusher 11-2 is pushed out by the fluid pressure cylinder 14-2 while the lower pusher 11-1 is stopped at the position. The sleeve 4 is pushed by the first-stage sleeve pressing claw 13-1 for positioning the rear end of the sleeve, which is protrudingly provided at the rear end of the upper pusher, during the pushing, and the sleeve 4 is further inserted into the mandrel 8. The upper pusher 11-2 moves forward until reaching the forward limit switch 15-2, and is stopped at that position by the control device 16 similarly to the lower pusher 11-1. Therefore, the rear end of the sleeve 4 is always set at the predetermined position even if the mounting position of the sleeve 4 is disjointed in the mandrel axial direction.

When positioning of the rear end of the sleeve 4 is completed,
As shown in FIG. 6, the upper pusher 11-2 is retracted and stopped at the position of the upper pusher retreat limit switch 15-4. During this retraction of upper pusher 11-2,
Second from the sleeve partially inserted in the mandrel 8
When the step sleeve pressing claw 13-2 is separated, the sleeve pressing claw protrudes upward by the spring 18. The protruding claws serve to push the sleeve into the mandrel in the final step. The upper pusher 11-2 stops at the position of the upper pusher retreat limit switch 15-4.

Thereafter, as shown in FIG. 7, when the upper pusher 11-2 is advanced again until it reaches the pusher advance limit switch 15-2, the mandrel center and the sleeve center automatically coincide with each other, and Insertion is completed. After the insertion is completed, the pusher is returned to the original position, that is, the same position as in FIG.

When the length of the sleeve is different, the limit switch 15-2 of the upper pusher 11-2 is provided at the point where the center of the sleeve coincides with the center of the mandrel, so that the sleeve can be easily changed in length. Can respond.

In this case, the pusher is a two-stage pusher. However, it is assumed that the distance between the mandrel and the sleeve insertion device is long. Needless to say, is a single structure having only the upper pusher. When the pusher has a single structure, the pusher is simplified and the time required for the pusher to move back and forth is up and down 2 times.
It is shortened compared to the step type.

[0023]

As described above, according to the present invention, the operation of inserting the sleeve into the mandrel is performed by a pusher having two push claws, and the position of the sleeve is restricted. There is an excellent effect that the sleeve can always be inserted and set in the mandrel with high accuracy even if the mounting positions are different. In addition, the device of the present invention not only can easily cope with sleeves having different lengths, but also can use a proximity switch such as a limit switch as a position restricting means of the pusher. This has the effect of simplifying the apparatus, reducing the cost of equipment, etc., and is extremely useful.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an embodiment of the present invention and a control system thereof.

FIG. 2 is a front view of a pusher in a state in which a sleeve is mounted, showing a portion of a sleeve mounting table in the same device in an enlarged manner.

FIG. 3 is a schematic diagram showing a state in which a sleeve of the device is mounted on a pusher main body.

FIG. 4 is a schematic view showing a state in which a part of the sleeve of the device is inserted into a mandrel.

FIG. 5 is a schematic view showing a state in which a rear end of the sleeve of the device is positioned.

FIG. 6 is a schematic diagram showing a state in which the pusher of the above device is retracted.

FIG. 7 is a schematic view showing a state in which the sleeve of the device is inserted into the center of the mandrel.

FIG. 8 is a schematic view showing an example of a conventional sleeve insertion device.

[Explanation of symbols]

Reference Signs List 4 sleeve 8 mandrel 11 pusher 11-1 lower pusher 11-2 upper pusher 12 sleeve mounting table 13-1 first-stage sleeve pressing claw for sleeve rear end positioning 13-2 second-stage sleeve pressing claw for sleeve centering 14-1 Fluid pressure cylinder for lower pusher 14-2 Fluid pressure cylinder for upper pusher 15-1 Lower pusher forward limit switch 15-2 Upper pusher forward limit switch 15-3 Lower pusher backward limit switch 15-4 Upper pusher backward limit switch Switch 16 controller 17 fulcrum pin 18 spring

Claims (1)

(57) [Claims] 1. A device for automatically fitting a sleeve to a mandrel of a pay-off reel, comprising: a sleeve mounting table opposed to an axial direction of the mandrel; and moving the mounting table forward and backward in the axial direction of the mandrel. A pusher, a first-stage sleeve pressing claw for positioning the rear end of the sleeve and a second-stage sleeve pressing claw for sleeve centering provided on the pusher or the sleeve mounting table, a detection switch for positioning the pusher, and a control device for the pusher. A payoff reel sleeve automatic insertion device, wherein the pusher positioning detection switch and the control device control the movement stroke of the pusher in accordance with the length of the sleeve.