JPS6016315A - Synchronizer for crankshaft in travelling cutter - Google Patents

Abstract

PURPOSE:To make a synchronizing device lightweight and as well to cut long length articles into a specified fixed length with a minimum error, by utilizing a synchronizing link device instead of a synchronizing train. CONSTITUTION:A synchronizing link 5 is interposed by means of coupling shafts 19a, 19b between arms 8a, 8b making a certain angle with respect to the bent direction of driven crankshafts 12, 6, 13, which are projected from driven shafts 12, 13. The effect of synchronization becomes maximum at an angle of 90 deg.. With this arrangement which is simple and light weight in comparison with the conventional arrangement having a gear train, long length materials such as, for example, pipes, shape steels, etc. may be cut into a fixed length with a small error.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a traveling cutting method in which continuously manufactured long products such as pipes and shaped steel are cut to a specified constant length with minimal error. It is something.

In pipe manufacturing plants and other long product manufacturing plants, coiled raw materials are fed one after another to produce a continuous product without any loss of time. A traveling cutting device is used to cut the continuous products made in this way into a constant length with a small margin of error depending on the intended use.

Since pipes and the like are constantly being sent out one after another from the manufacturing plant, it is not possible to stop each time when cutting them.On the contrary, the cutting blade is cut according to the running speed layer such as hype. The speed difference between the pipe, etc. and the cutting blade is completely zero, and when the pipe comes out a certain length under computer control, the cutting blade is pushed down by the crank device r (therefore, the cutting blade is excited and the pipe is It slides in the length direction and is pushed down by the crank for 7 minutes until it reaches a certain length (i
9JμF.

At this time, while the cutting blade is sliding, it is pushed down by the crank, so the crank part is 'N Bi2. + Travel F, 1
Only Jxl+ is required, and for traveling cutting machines, 1. There is one driving rank, and several driven cranks are provided, and a long ram is suspended in the direction of the pipe, and the cutting blade is slidably suspended on this ram. As the ram slides in the pipe running direction, the ram is lowered to cut the pipe.After cutting, the cutting blade moves in the opposite direction to the pipe running direction, and the ram lowers the cutting blade. It is designed so that it can be raised.

In a traveling cutting machine equipped with such a long ram and multiple crankshafts, it is necessary to synchronize the rotation of the driving crankshaft and the rotation of the driven crankshaft. Therefore, a gear train is interposed between each crankshaft so that the driven crankshaft and the driving crankshaft always rotate at the same time.

However, cutting pipes etc. requires a large driving force, and
To be able to withstand this driving force, the water droplet train needs to be of an appropriate size and strength.

As a result, the weight of the crank rotating part increases, and the clutch force during the crank drive at the start of the cutting operation becomes too strong. This resulted in an increase in the braking force of the crank drive shaft, an increase in the capacity of the clutch and brake parts, an increase in the heat-generating shell, and an increase in motor horsepower.

The present invention provides a synchronization link device for crank synchronization which is the cause of these problems (as an alternative device, a synchronization link device is provided, and this h1^1 link device controls the rotation of crank rotations φ, γ, b). This is by reducing the number of types by 1 and eliminating the above-mentioned defects by jfl/l'.

The purpose of the present invention is as described above, and is shown in the attached drawings.
~ta≠Based on the drawing of the bar example, the details of the present invention 1 i'
Let me explain fff formation.

11￥1 is the front view of the traveling cutting machine of the present invention. Fig. 2 is also a partial side view. Fig. 3 is the rear view of the crankshaft and synchronizing link. FIG. 5 is a rear view of the crankshaft and the tuning link section. FIG. 6 is a diagram of a conventional crank tuning device. FIGS. 7 and 8 are diagrams showing the rotating state of the crankshaft.

The overall configuration of the traveling cutting machine will be explained with reference to FIGS. 1 and 2.

While the cutting device runs on the rail 11) fixed to the base, the pipe or the like is held in the clamp device (3) and the cutting blade 121 is lowered to cut it. The cutting blade (21 is supported by the cutting blade support device (9), and the cutting blade support device (1)
) slides up and down with respect to the clamping device (31), and the cutting blade (
2) is configured to cut the pipe etc. clamped by the clamp device (3).

A clamp device (3), a cutting blade (2), a cutting support device (
51) constitutes a cutting device 7, the lower surface of which fits into the rail (1), and the upper surface of which is a rail (7a) of a ram (7) that is moved up and down by a crank device using a clamping guide +221 +221.
is fitted.

Slide this cutting device. The drive device includes a drive motor (14), a pinion C11), a rank (101, etc.).

The drive motor (14) is composed of a P-C motor, which moves forward and backward by switching a switch, and measures the movement of the pipe with a rotary encoder that senses the movement of the pipe (7, cutting position). When A is near A and the forward direction is entered, it accelerates rapidly and becomes the same as the pipe speed, and when it reaches the cutting position, the crank device [t
l's clutch device ↑j'i 1ift~ is inserted and the cutting blade (2
Go down and cut the pipe. cutting edge
The blade (2') begins to rise by the crank device, and when it returns to its original position, it is stopped by the brake device 71'!'29t.

Further, in the cutting device #I, after cutting, the rotation of the drive motor (14) stops 17, and then rotates in the opposite direction to return to the position where it starts operating.

In this six-travel cutting lever, the present invention 171-, the crankshaft jfilQ2' for vertically moving the ram (7)
Q3) Regarding the Ω tuning link.

In Fig. 2, power is transmitted from the pulley of the press motor (+Ii') by a V belt to the input V pulley which is parallel to the clutch device (Ilii).On this input shaft, there is a brake device (2 ) and drive pfi stop (!7I)
is established and stays at the same time.

The rotation of the press motor (15) causes the clutch device (
The input shaft provided with 161 etc. rotates, and the drive gear (1r
・is rotated. Fixed dragon wheel (18) from drive gear (17)
) rotates. A 51-screw crankshaft (6) is fixed to the fixed gear (18), and a tuning link (5) moves left and right in the space in front of the fixed gear (18).

The traveling cutting device needs to slide all the way around the base, and since the ram (7) is long, the central drive crankshaft (6
! Driven by left and right driven cranks n++h jf v
゛! 3) are also installed on the same horizontal axis, and the three crank feeders 1 (ly, lu') (+31) are connected to the ram (7).
is suspended d-.

However, three cranks J1M! Hang it with the + button, rotate the only 1194 crankshaft, and attach the ram s.
= , ii In the case of dynamic rotation, a problem will occur if there is no gear train or tuning link for tuning.

That is, as shown in Fig. 7, if the drive crank (61) is located on the lower or upper side when viewed from the rear, the rotational force of the drive crank (61) becomes the force that pushes the ram to the left. When the plow is started, a synchronizing force is applied to the ram so that it moves in the same direction as the direction of rotation of the crankshaft (61).

However, as shown in Fig. 8, when the drive crankshaft (6) attempts to make one rotation from the horizontal position, the μ-swing crank Nl is tilted in the direction of lifting the center of the ram upwards.
The rotational force of l:1((i:(rr) is insufficient to orient the rotational direction of both ends of the ram.

That is, in the 8th U series 1' and 2, one driven crank'
1" and rotates upward, and the other driven crank (12+
t(p downward 11χ j!jI+(degrees of freedom remain).

In order to negate this 42 degree of freedom, a tuning device for the crankshaft 1 is required. Conventionally, as shown in Figure 6, gears (i4+L x 7s') were installed on each crankshaft, and a counter I/O was installed between them. 11.1.i, '7+'...271 i=Insert and synchronize By this, the drive crank ll'lii [
The driven crank lhl was configured to rotate in the same direction as 6.

However, as in the past, with a tuning device,
1゛1 [If you make a gear with sufficient tooth thickness and durability, the fd cost will be high, and in order to make it suitable for sudden braking and a famous clutch, b; j2, low amount. It also becomes larger in terms of

The present invention improves this, and as shown in FIGS. 3 and 4,
From the driven crankshaft (121! + 3!), the arm C3a)' (8b
) protrudes, and a tuning link (51) is interposed between these arms (8aH8b) via connection shafts (J9a, r19b).

The maximum tuning effect is achieved when the angle is 90°.

As described above, the present invention provides a traveling cutting machine in which a ram is supported by a plurality of crankshafts and a cutting blade that slides on the rams is moved up and down. Since a synchronizing link is connected between the arms, it is much easier to use than the conventional structure in which a gear train is interposed between each crankshaft. ! ji': Since it is the only link that does not require the use of strong gears, even when sudden braking or sudden clutching occurs, only a buckling load is applied to the link and a bending load is applied to the arm. Therefore, rather than having to deal with 11 cars in the rain, it is possible to replace them with a tuning link of a much simpler configuration, which is advantageous in terms of cost. or,
The weight of the rotating parts can be dramatically reduced, the brake equipment and clutch equipment can be made smaller, heat generation can be prevented, and the cooling equipment for these can be made smaller. Similarly, the cooling motor can also be made with a small horsepower. It can be done on your behalf.

In addition, by setting the angle between the bending direction of the crankshaft and the direction of the arm to be approximately 9G, the tuning effect of the tuning link can be maximized, and the bearing aB of the crank tll+
It is possible to create a device that accurately performs the tuning action even if there is play in the shaft or in the pivot portion of the tuning link.

[Brief explanation of the drawing]

Figure 1 (ζ) Front view of the traveling cutting machine of the present invention. Figure 2 (also a partial cross-sectional side view).
Figure 5 is a 5F view of the crankshaft and the synchronizing link. Figure 6 is a diagram of the conventional driven crank mechanism 1'1. Figures 7 and 8 are the crankshaft. It is a drawing showing the rotation shape j2, -. 12) Cutting blade (51 Tuning link (1 city) Drive crankshaft (7) Ram (8a) (8
b] - Arm +, 121+31 Driven crankshaft applicant Kusakabe Electric Co., Ltd. agent Patent attorney Toshikazu Yano

Claims (1)

[Claims] il+ A traveling cutting machine in which a ram is supported by a plurality of crankshafts and a cutting blade that slides on the ram is moved up and down,
Earth f protruding in a direction different from the bending direction of each crankshaft:
1. A crankshaft tuning device for a traveling cutting machine, characterized in that a tuning link is connected between the arms. +21 The crankshaft tuning device according to claim 1, characterized in that the angle between the bending direction of the crankshaft and the arm is approximately in the front.