JPH0318563B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for pulling out the end portion of a high-pressure hose that has been vulcanized and molded with an iron core inserted therein.

Generally, high-pressure hoses are manufactured by coating an iron core (mandrel) with tube rubber, a reinforcing layer of steel wire, cover rubber, etc., and vulcanizing the hose in this state. To pull out a high-pressure hose with a vulcanized iron core from the iron core,
Since it is necessary to provide a clamping allowance on the iron core, the end portion of the high-pressure hose is cut off and only this end portion is first pulled out and removed from the iron core.

Conventionally, the method used to pull out the end of a high-pressure hose with an iron core from the iron core was to clamp and fix the high-pressure hose body near the end, and then gradually pull it out while hitting the end with a hand-held piece of iron. It is being

However, with this method, there is a problem that the core is easily damaged due to incorrect nailing, and cannot be reused unless the core surface is repaired to make it smooth. Furthermore, the clamping portion of the main body of the high-pressure hose is also easily damaged, which increases the number of cut-off portions that cannot be used as a product. Furthermore, in the work of hammering in hand-held iron pieces, there is a problem that not only is there a risk of injury to the worker, but also that favorable results are not obtained in terms of work efficiency.

This invention was made to solve the above problem, and it is possible to fix the end portion of a high-pressure hose with an iron core without damaging the iron core and the hose main body.
The purpose is to provide a device that can be pulled out safely and with high efficiency.

In order to achieve the above object, in the present invention, as shown in the embodiments and drawings described later, a fixed frame 10 and a slide frame 20 are provided on a base 35, and the fixed frame 10 and slide frame 20 are provided on a base 35.
The end portion 4 of the high pressure hose 41 containing the iron core 40 is
A hose holding plate 11 and a hose separation plate 21 on which the high pressure hose 3 is placed are respectively attached, and the lower end of the high pressure hose 41 is held between the both sides of the end portion 43 of the high pressure hose 41 on the hose holding plate 11 and the hose separation plate 21. The blades 15 and 2 can be contracted and closed toward the center of the high-pressure hose 41 using the blades 15 and 2 as a fulcrum, and both have the same shape and oppose each other.
The hose separation plate 21 is superimposed on the side surface of the hose holding plate 11 on which the end portion 43 of the high-pressure hose 41 is placed, on the side of the hose end portion 43, and the blade 25 of the hose separation plate 21 is connected to the hose separation plate 21. The hose separation plate 21 of the slide frame 20 is arranged in alignment with the blade 15 of the holding plate 11.
The high pressure hose 4 is guided by the fixed frame 10.
It is configured to be movable in the axial direction toward the end portion 43 of the first end.

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

FIG. 1 is a perspective view showing an embodiment of the invention. In the above figure, numeral 10 is a fixed frame, 2
0 indicates each slide frame.

The fixed frame 10 includes a hose holding plate 11 and side plates 12 fixed to both ends of the hose holding plate 11.
a, 12b, and front plates 13a, 13 connected to the sides opposite to the hose holding plate 11 of the side plates 12a, 12b.
It consists of b.

The hose holding plate 11 is provided with blades 15 that are open at the upper end and face each other in a semi-elliptical shape. This blade 15 has an acute-angled cutting surface. The hose holding plate 11 rotates on both the left and right sides using a hinge mechanism (not shown) provided at the lower end of the blade 15 as a fulcrum, so that the blades 15 facing each other rotate.
The upper edge of the can be folded and closed. Front plate 1
3a and 13b are joined together so that they can rotate in the same direction as the hose holding plate 11 by fitting the stepped surfaces formed on the joining end portion 14 into each other. Side plates 12a, 12
A pin on the rod side and the head side of the air cylinder 16, which is a means for rotating the hose holding plate 11, is attached between the two. A positioner (not shown) is provided in the operating circuit of the air cylinder 16, so that the rod 17 can be stopped and locked at a stroke position of an arbitrary length. code 1
Reference numeral 8 indicates a compressed air pipe, and reference numeral 19 indicates a manual valve.

The fixed frame 10 having the above configuration is supported on a base 35.

The slide frame 20 has a hose separation plate 21
, guide rods 22a and 22b fixed to both ends of the hose separation plate 21, and a pull-out plate 2 connected to the opposite side of the guide rods 22a and 22b from the hose separation plate 21.
It consists of 3a and 23b.

The fixed frame 10 is attached to the hose separation plate 21.
A blade 25 having the same shape as the blade 15 of the hose holding plate 11 is provided oppositely. This blade 25 is formed with an acute-angled cutting surface on the side opposite to the blade 15 of the hose holding plate 11, and is aligned with the blade 15 on the surface of the side plate 12a, 12b of the hose holding plate 11 on the attachment side. It is superimposed on the position where it should be. A hinge mechanism (not shown) is provided at the lower end of the blade 25 of the hose separation plate 21, and the left and right sides can rotate in the same direction as the hose holding plate 11 using this lower end as a fulcrum. The guide rods 22a and 22b are inserted into the front plates 13a and 13b of the fixed frame 10 so as to be freely removable and removable. The pull-out plates 23a and 23b are joined together by fitting stepped surfaces formed on the joint end portions 24 so that they can rotate in the same direction as the front plates 13a and 13b of the fixed frame 10.

The front plates 13a, 13b of the fixed frame 10 and the pull-out plates 23a, 23b of the slide frame 20 are provided with a rod 27 of a hydraulic cylinder 26 installed on a base 35 as a sliding means for the slide frame 20. Front plate 13a, 1
The rod 27 is inserted into and out of the joint end 14 of the slide frame 20, and the tip of the rod 27 is inserted into the joint end 14 of the slide frame 20.
It is inserted into the joining end 24 of 3a, 23b and fixed by tightening a nut.

As a result, the rod 27 of the hydraulic cylinder 26 becomes a common rotational support shaft for the front plates 13a, 13b of the fixed frame 10 and the pull-out plates 23a, 23b of the slide frame 20, but a separate support shaft is provided. The front plates 13a, 13b of the fixed frame 10 and the pull-out plates 23a, 23b of the slide frame 20 may be supported, and the rod 27 of the hydraulic cylinder 26 may be attached only to the pull-out plates 23a, 23b of the slide frame 20. The reference numeral 28 represents a hydraulic oil pipe, 29 represents a solenoid valve, and 30 represents a hydraulic unit.

Next, the operation of the apparatus having the above configuration will be explained step by step.

When the above device starts operating, the hose holding plate 11 and the hose separation plate 21 are placed one on top of the other, and both blades 15 and 25 are in an expanded state.

First, as shown in FIG. 1, the end portion 43 of the high-pressure hose 41 containing the iron core 40 is placed on the hose holding plate 11 of the fixed frame 10 and the hose separation plate 21 of the slide frame 20, and the hose body portion 42 and The part to be cut 44 between the terminal part 43 is cut by the blade 15 of the hose holding plate 11 and the hose separating plate 21,
25 and clamp it. In this state, the blades 15, 25 bite into both left and right side surfaces of the portion 44 to be cut of the high pressure hose 41 by a small amount, as shown by solid lines in FIG.

Next, when the air cylinder 16 is operated with the manual valve 19 to extend the rod 27, the side plates 12a, 12b and the front plates 13a, 13b of the fixed frame 10 are
and are rotated upwardly and in opposite directions by a predetermined angle about the rod 27 of the hydraulic cylinder 26 as a support shaft. Guide rod 22a of slide frame 20,
22b and the pull-out plates 23a, 23b are forced to rotate by the rotation of the front plates 13a, 13b of the fixed frame 10, and similarly rotate by the same angle about the rod 27 of the hydraulic cylinder 26 as a support shaft. This allows the blade 1 between the hose holding plate 11 and the hose separation plate 21 to
5 and 25 contract and close toward the center of the high-pressure hose 41 using their respective lower ends as fulcrums, and bite deeper into both left and right sides of the cut portion 44 of the high-pressure hose 41, as shown by broken lines in FIG. Blade 15, 25
When the rod 17 of the air cylinder 16 contracts and closes to a position just before contacting the surface of the iron core 40, the extension of the rod 17 of the air cylinder 16 is stopped.

At the same time as the operation of the air cylinder 16 stops,
The solenoid valve 29 of the hydraulic cylinder 26 automatically operates and the rod 27 extends. By the extension of the rod 27, the pull-out plates 23a, 2 of the slide frame 20 are removed.
3b is pushed out in the axial direction toward the end of the hose shown by the arrow in FIG. As a result, the hose separation plate 21 is connected to the guide rod 22a of the slide frame 20,
22b and move in the same direction.

In this way, the hose separation plate 21 of the slide frame 20 has the blade 25 connected to the high pressure hose 41.
The hose moves while pressing the cut portion 44 side of the end portion 43, but the cut portion 4 of the hose main body portion 42
The end portion 43 of the high-pressure hose 41 is pulled out from the iron core 40 as shown in FIG.

When the end portion 43 of the high pressure hose 41 is pulled out from the iron core 40, the solenoid valve 29 of the hydraulic cylinder 26
is activated, the extension of the rod 27 is stopped and the rod 27 is contracted, and the slide frame 20 is returned to its original position. At the same time, the rod 17 of the air cylinder 16
By reducing the size of the hose holding plate 1 of the fixed frame 10
1 and the hose separation plate 21 of the slide frame 20
Rotate it in the opposite direction to restore it to its original state.

The above operation completes one cycle of the drawing process. If the sizes of the high-pressure hoses 41 containing the iron core 40 are different, the stroke length of the air cylinder 16 is set in advance in the positioner, and the hose holding plate 11 and hose separation plate 21 are blades 15, 25
The amount of contraction and closing is adjusted according to the size of the high pressure hose 41.

In the above embodiment, the blades between the hose holding plate and the hose separation plate are contracted and closed using an air cylinder.
The hose separation plate is moved in the hose pulling direction using a hydraulic cylinder, but a hydraulic cylinder can be used in place of the air cylinder, and an air cylinder can also be used in place of the hydraulic cylinder, and both can use the same cylinder. You can also use

The present invention can also be applied as an end part extraction device for pulling out a core from a cylindrical object with a core inserted therein using the same molding method as the high-pressure hose. .

As explained above, according to the present invention, the hose holding plate of the fixed frame and the hose separation plate of the slide frame are overlapped and matched to the part to be cut between the main body and the end of the high-pressure hose with iron core. Retract and close the blade, and push the hose separation plate, which has been inserted into the cut section of the hose end, toward the hose end, with respect to the hose holding plate, which has been inserted into the cut section of the hose main body. Since it is configured so that it can be moved in the axial direction of the hose, by appropriately setting the amount of contraction and closing of the blade according to the size of the high pressure hose, the hose end can be pulled out without damaging the iron core. .

Further, according to the present invention, the biting force of the blade is applied only to the portion to be cut between the main body and the end of the high-pressure hose, so the hose main body is not damaged.

Furthermore, according to this invention, there is no need for the worker to manually hammer in the iron pieces he/she has on hand.
Since the end portion of the high-pressure hose can be pulled out by mechanical operation, there is no risk of injury to the worker, and work efficiency is greatly improved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the state of the embodiment of the present invention before operation, FIG. 2 is a sectional view taken along the line A-A in FIG.
FIG. 3 is a sectional view showing the operating state of the slide frame. In the figure, 10 is a fixed frame, 11 is a hose holding plate, 15 is a blade, 20 is a slide frame,
21 is a hose separation plate, 25 is a blade, 35 is a base, 40 is an iron core, 41 is a high pressure hose, 42, 43
are the main body portion and the terminal portion of the high-pressure hose, respectively, and 44 is the portion of the high-pressure hose to be cut.

Claims (1)

[Claims] 1. A fixed frame and a slide frame are provided on a base, and the fixed frame and slide frame include:
A hose holding plate and a hose separation plate on which the end of the high-pressure hose with an iron core is mounted are respectively attached, and the hose holding plate and the hose separation plate hold both sides of the end of the high-pressure hose, and the lower end of each is mounted on the hose holding plate and the hose separation plate. The high-pressure hose can be contracted and closed toward the center using the high-pressure hose as a fulcrum, and both blades have the same shape and are opposed to each other. The hose separating plate is placed over the side of the hose terminal side of the plate, and the blade of the hose separating plate is aligned with the blade of the hose holding plate, and the hose separating plate of the slide frame is guided by the fixed frame to hold the high pressure hose. A high pressure hose terminal pulling device characterized in that it is configured to be movable in the axial direction toward the terminal side.