JPS604719Y2 - Cutting device for hose-shaped long objects - Google Patents

Description

[Detailed description of the invention] This invention consists of a series of hoses and tubes of the same quality,
This invention relates to a cutting device that cuts long objects such as wires and cables to a certain length.

Regarding the hoses used for car air conditioner piping work,
In an attempt to automatically cut the hose to a certain length, a pair of upper and lower endless belts was installed on the machine frame, the hose was passed between them, and the lower endless belt was cut using a pulse motor. It was proposed to cut the hose with a cutter at the front end of the machine frame by pressing the hose with an endless band above the machine, but this method prevents slipping between the endless bands and bending of the hose. unable to prevent
In addition, due to variations in the outside diameter of the hose, the clamping force of the endless band is not constant, and this results in variations in the feed rate of the hose, which makes the cutting length inconsistent, making it impossible to achieve this goal.
Currently, most hoses are cut manually at factories or construction sites.

Therefore, this idea was developed in view of these circumstances, and it is possible to correct the bends in a long, curved hose-like object and feed it in a straight line, while at the same time eliminating variations in the amount of feed. However, it is an object of the present invention to provide a cutting device capable of keeping the cutting length constant regardless of this.

The embodiment will be described with reference to the drawings.
FIG. 2 schematically shows the front and plane of the entire device, in which reference numeral 1 denotes a mounting table on which a coiled hose 2 is rotatably placed. A brake device 1a is provided on the lower side.

4 is a feeding device for the hose 2, and an endless belt 4b and a pressing roller 4C are vertically installed on the frame 4a at a required interval, and the hose 2 is held between them. The hose 2 is driven with an open end by a motor m to feed the hose 2 sequentially to the next cutting device A.

The cutting device A consists of a machine base B, a guide device C1 for the hose 2, a cutter device, and a stop device E. The machine base B is assembled as a frame of the required length using angle materials and longitudinal connecting materials, and the upper The connecting material forms the guide rail a of the guide device C and the cutter device, which will be described next.

The guide device C extends over almost the entire length of the machine base B and is provided with a chassis 5 at both ends, and an axle 6 is inserted into the chassis 5 in the lateral direction as shown in FIG. 4), and wheels 7 are attached to both ends thereof, and these wheels 7 are engaged with guide rails a of machine base B in a freely movable manner.

Further, a slide base 8 is fixed on the chassis 5, and a pair of slide blocks 8at8b are provided in the slide base 8.
are fitted, and both are connected to hose 2 by screw rod 8c.
The position can be adjusted depending on the thickness.

A stationary rod holder 9 is mounted on one slide block 8a (on the right side in the figure), and the upright surface of this rod holder 9 has two guide rods 11 arranged vertically at a required interval. The ends of are fixed.

Furthermore, a cylinder mounting base 12 with a slope is fixed on the other (left side) slide block 8b, and a cylinder 13 is mounted on the cylinder mounting base 12 with an inclination downward to the right, and the piston rod 13a of the cylinder mounting base 12 is fixed. A movable rod holder 10 is fixed at the tip, and the ends of two guide rods 11 arranged vertically at a required interval are also fixed to the surface of the movable rod holder 10.

These guide rods 11 extend forward (to the left in the figures) as shown in FIGS. 1 and 2, and each front end is connected to a stationary rod holder 9 and a movable rod holder 9 provided on the front chassis 5 in the same manner as described above. They are each fixed to the rod holder 10.

When each movable rod holder 10 synchronously approaches each stationary rod holder 9 as shown in FIG. 4, the four guide rods 11 touch and surround the outer surface of the hose 2 to be treated from all sides. It looks like this.

Further, a spring 14 of a required strength is stretched between the rear chassis 5 and the rear support of the machine chassis B, and the guide device C
is constantly pulled toward the rear strut.

FIG. 3 shows the cutter device, in which a slide support 15 is erected on the slide base 8 of the rear chassis 5, and inside thereof is a slider 16 with a plate-shaped cutter 17 attached to the front. The slider 16 is fitted and is configured to slide up and down by a cylinder 18 on the column.
Two protrusions 16a are provided above one side (see FIG. 4), and are opposed to upper and lower limit switches 15a disposed on the support column 15.

A projecting plate 19 is fixed to the upper end of the support column 15, and an operating cylinder 20 of a push rod 20a is vertically installed at the tip of the extension plate 19, and a guide bush 21 for the hose 2 is provided at the center of the lower end of the support column 15. It is inserted.

Furthermore, FIGS. 5 and 6 show a stop device E, which includes a limit switch 22 for stopping the motor m for feeding the hose 2, a receiving block 23 for the hose 2, and a limit for operating the cutter. The latter limit switch 24 is supported by a receiving block 23, and the former limit switch 2'2 and receiving block 23 are both attached to the two guide rods 11 on the stationary side. However, the receiving block 23 is installed at a predetermined length position of the hose 2 from the front of the cutter device, and the limit switch 22 has its detector 22a at its front end (the right side is the front and the left side is the rear in FIG. 5). The stopper rod 23a is attached to the receiving block 23 so as to be slightly (approximately 40 degrees) behind the end face of the stopper rod 23a inserted into the receiving block 23, that is, on the cutter device side.

Further, a detector 24a of a limit switch 24 for operating the cutter is in contact with the front end of the stopper rod 23a.
Furthermore, a projecting plate 19 is fixed on the receiving block 23, and the operating cylinder 2 of the push rod 20a is attached to the rear end.
0 is attached.

As is clear from the above description, the cutter device and the stop device E are both integrated with the guide device C and are disposed on the machine base B so as to be movable back and forth.

However, normally, the spring 14 pulls it toward the rear support column of the machine base B.

Since the structure is as described above, in FIGS. 1 and 2, the brake device 1a of the mounting table 1 is loosened, the hose 2 is pulled out and inserted into the feeding device 4, and the motor m is driven to stop the endless belt 4b. If you rotate the hose 2, the slide column 15
It passes through a guide bush 21 provided in the guide bush 21 and is sequentially extended forward.

The hose 2 passing through the guide bush 21 enters between the four guide rods 11 extending forward from the rod holders 9 and 10 at the rear, and is guided by these to advance toward the stop device E.

In this way, the hose 2 is let out almost to a predetermined length, and just before its front end hits the stop rod 23a, it touches the detector 22a of the limit switch 22, and the signal is transmitted to the motor m of the feeder 4, causing the motor to m is stopped.

By the way, it takes 0.2~ for motor m to stop completely.
0. Normally, a hoe is required, so the hose 2 moves forward due to inertia (the total amount of inertia is about 60 mm) and comes into contact with the stopper rod 23a.

However, even at this time, some inertial movement of the hose 2 remains, and the hose 2 tries to advance and presses the stop device E forward.

In this case, the stop device E is fixed to the guide rod 11, and the cutter device is also integrated with the guide device C, which is movably disposed on the machine base B by the wheels 7. The pressing action of the hose-shaped body 2 causes the stop device E and the cutter device as well as the guide device C to move slightly forward against the tension of the spring 14.

In other words, the feeding of the hose 2 due to inertia is absorbed by the movement of the guide device C, and the hose-like body 2 does not contract or bend at all.

On the other hand, if the hose 2 comes into contact with the stopper rod 23a, the detector 24 of another limit switch 24 is connected to the rear end of the hose 2.
a is activated, the signal is sent to the cutter device, and the cylinder 18 is activated to lower the cutter 17 and cut the hose 2.

At this time, since the relative distance between the cutter 17 and the stopper rod 23a does not change, the hose 2 is cut to a constant length.

Then, when the cutter 17, that is, the slider 16 descends and the lower protrusion 16a on the front surface contacts the lower limit switch 15a provided on the slide support 15, the cylinder 13 on the front and rear chassis 5 and the thrust rod operating cylinder 20 moves and moves the movable rod holder 1 as shown in Figure 8.
0 retreats, the push rod 20a extends, and the guide rod 1
Push down the hose 2 that was being held by 1.

The hose 2 of a certain length is housed in a box 25,
During this time, the circuit of the operation cylinder 18 of the cutter 17 is switched, and the cutter 17 and slider 16 are raised.
When the upper projection 16a on the front surface contacts the upper limit switch 15a on the slide column 15,
The circuits of the cylinder 13 on the chassis 5 and the thrust rod operating cylinder 20 are also switched, and the movable rod holder 10 projects and the thrust rod 20a contracts, returning to the original state shown in FIGS. 4 and 7.

At the same time, the guide device C is drawn toward the rear support column of the machine base B by the action of the spring 14.

Thus, the motor m is driven again and the hose 2 is guided by the guide device C.
The above operation is repeated.

In addition, although the above example was explained in the case of handling hoses, the function remains the same even if it is applied to cutting tubes, wires, cables, etc. of the same quality.

As described above, according to this invention, a long hose-like object with a bend is held and guided by a plurality of guide rods, so that the bend can be corrected and the hose-like object can be moved forward in a straight line. Even if there is variation in the feed rate of a long object, it can be absorbed by moving the guide device, and by adjusting the distance between the stationary rod holder and the movable rod holder, the thickness of the hose-like long object can be adjusted. Furthermore, since the relative distance between the stop device and the cutter device does not change at all times, long hose-like objects can be cut to a nearly constant length, and cutting that could previously only be done by hand is now possible. Since it can be carried out automatically, work efficiency is significantly improved, and it is extremely useful in industry.

[Brief explanation of drawings]

Fig. 1 is a schematic front view of an embodiment of this invention, Fig. 2 is a schematic plan view, Fig. 3 is a partially cutaway front view of the cutter device, Fig. 4 is a side view thereof, and Fig. 5. FIG. 6 is a partially cutaway front view of the stop device, FIG. 6 is a partially cutaway side view of the stop device as seen from the front, and FIGS. 7 and 8 are explanatory diagrams showing the hose in a holding state and a released state. In the figure, A... Cutting device, B... Machine base,
C...Track guide device, D...Cutter device, E...
...... Stop device, 1... Placement table, 2... Hose, 4. Track/feed device, 5...
... Chassis, 6 ... Axle, 7 ... Wheels, 8 ... Slide base, 9 ... Stationary rod holder, 10 ...・・Movable rod holder,
11, curve, guide rod, 13, 18, 20...
Cylinder, 14... Spring, 15
...Slide support, 16...Song slider, 1
7... Cutter, 22, 24... Limit switch, 23... Receiving block.

Claims (1)

[Scope of Claim for Utility Model Registration] A chassis 5 extending over almost the entire length of the machine base B, and provided with a chassis 5 at both ends movably engaged along the guide rail B1 of the machine base B,
A slide base 8 is fixed to each chassis 5, and a slide block 8a having a stationary rod holder 9 and a slide block 8b having a cylinder mounting base 12 are fitted to each slide base 8 so as to be able to move from and near each other. A cylinder 13 having a movable rod holder 10 at its tip is mounted on the cylinder mounting base 12, and a pair of upper and lower guide rods 11 are respectively installed between the stationary rod holder 9 and the movable rod holder 10 that face each other at both ends. However, between the rear chassis 5 and the machine base B, there is a hose-like guide device C with a restoring spring 14 stretched, and a support 15 erected on the slide base 8 of the rear chassis 5. Cutter 17 on the front
Upper and lower protrusions 16a are provided on the sides of the slider 16, into which the slider 16 having the upper and lower sides is fitted so as to be slidable up and down. 16b facing the limit switch 15a provided on the support 15, and a cutter device having an overhanging plate 19 fixed to the upper end of the support 15 having an operation cylinder 20 having a thrust rod 20a hanging thereon, and the guide rod 11 on the stationary side. At the top, a stopper rod 23a, a limit switch 24 for operating the cutter, and a thrust rod 20 are located at a predetermined distance from the support 5.
A stop block 23 equipped with the operating cylinder 20 of a.
A cutting device for a hose-like long object, which comprises a stop device E having a limit switch 22 installed thereon and a limit switch 22 equipped with a detector 22a for stopping the motor at a position slightly in front of the stop device E.