JPS6024504Y2 - Short length cutting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to the disclosure of a short length cutting device which is particularly easy to handle and is used for cutting various types of plates, particularly thin metal silver, to size.

In the past, when cutting coiled or flat items such as roof panels, it was common to use a roll feed mechanism to cut to a fixed size. In this case, although the series of operations of feeding, stopping, positioning, and cutting the rolls is carried out smoothly, the operation time necessarily requires a certain width.

In other words, it requires a series of operations, such as the roll speeding up sequentially from the start of driving, slowing down to a slow speed well before the cutting position, stopping, absorbing the loose flasher operation, and stopping. Although it was considered to be extremely practical as a means for cutting objects, especially coiled objects, it was considered unsuitable for cutting short objects due to the large loss of operating time.

In particular, when cutting short objects, the start and stop times are relatively long despite the short driving time, and the disadvantage is that it is difficult to achieve dimensional precision in operation.

In particular, skill is required to determine the standard length dimensions, and in cutting where the standard length changes relatively frequently, a considerable amount of work is required in setting the standard length itself. It is.

Furthermore, when improving workability in a roll feeding mechanism, uneven flashing often occurs, resulting in significant variations in cutting dimensions.

The present invention avoids the disadvantages of the conventional method, completely eliminates the time interval between each operation amount, reliably prevents the occurrence of variations in cutting dimensions due to the loose flasher, etc., and also improves the setting of the standard cutting length dimension. It is an extremely simple stroke dimension operation, and the gist of the idea is that it has a bed part that is slidably mounted on a guide rod and has a chuck mechanism, and a bed part that is constantly pulled elastically by a spring. In a cutting device consisting of a shearing part having a slitter mechanism at the elastic end, and a bed driving part having a slider crank mechanism that pulls this bed part against the elastic force of a spring, the slider crank mechanism is fixed. The other end of the connecting rod inserted into the shaft is fixed to the bed part with a sliding width of , and the length of the connecting rod is adjustable.

Next, we will explain in detail the following specific example based on the gist of the above configuration, and a typical example that is expected to involve considerable design changes, which are shown in the drawings. Specifically, a pair of guide rods 2 to 2 are mounted on the upper part of the machine casing 1, and an operating bed 3 is slidably horizontally mounted on the guide rods 2 to 2. A shearing part 4 is provided at one end of the bed 2, and a driving part for the bed 3 is provided at the other end.

The working bed 3 consists of bearings 5 to 5 for shaft guides to the rods 2 to 2, and a frame 7 for mounting the chuck mechanism as well as a roll 6 for preventing warpage of the plate to be cut, and a chuck 8 to the frame 7. By using the solenoid 9 to pull the rod 10 at any time, the rod 12 of the actuating chuck 8a is pushed upward via the fulcrum 11, and the actuating chuck 8a is attached to the fixed chuck 8b fixed to the frame 7. The structure is such that they are pressed into contact with each other.

Note that a rubber plate 13 with high frictional resistance is attached to the end face of the chuck 8b for the purpose of preventing errors in dimensional accuracy due to slipping during the chuck of the plate to be cut.

Next, the shearing part 4 pivots the slitter upper blade 15 on the connecting rod 17 of the crank 16 with respect to the fixed lower blade 14 so that it can slide up and down with the upper blade 25, and in front of the upper blade 15. In other words, a presser member 18 is resiliently mounted with a spring 19 so as to be located above the lower blade 14 so as to operate integrally with the upper blade 15.

The drive unit of the bed 3 is provided with a slide bearing 24 of a connecting rod 23 at the upper end of a rotating shaft 22 eccentrically mounted on a rotating disk 21 mounted on a rotating shaft 20. A connecting rod 23 is slidably inserted into the connecting rod 24.

The bearing 24 is designed to be substantially orthogonal to the rotating shaft 22, and the bearing case 24a and the slide bearing 2
4b.

First, the frame 7 of the bed 3 and the bearing 24 are connected by a connecting rod 23, and one end of the iron frame 23 is fixed to the frame 7, and the rod 23 is The other end is fitted into the bearing 24, and the stopper member 25 is attached to the fitted end of the rod 23 via the buffer member 26, and the rod 23 is divided into parts, one of which is a male screw frame part 23a and the other part of which is a female screw. As the tube portion 23b, the length of the rod 23 can be freely adjusted by screwing the frame portion 23a into the tube portion 23b at any time with a bundle inserted into the bundle hole 25a provided in the stopper member 25 portion. It is.

Next, a spring 27 is interposed between the frame of the bed 3, particularly the machine frame of the bearing 5 and the shearing 4, which has an elastic force that pulls the bed and the workpiece at the same time.

In addition, 28 indicates a driving motor, 29 indicates a speed reducer, and the operation of the solenoid 9 of the chuck mechanism and the drive section of the bed 3 are provided on the circumferential surface of the cam 30 which is coaxial with the crank 16 in the shearing section 4. Microswitches 31 to 32 used to drive the rotating shaft 20 are provided.

The present invention has a unique configuration in which the workpiece is clamped with the chuck 8, and then the rotating disk 21 is driven and the traction force of the spring 27 is gradually released, so that the bed 3 is gently moved in the direction of the shearing part 4. The rotating shaft 22 of the rotating disc 21 is slid on the shearing portion 4.
By reaching the directional position, the traction function of the spring 27 is completely eliminated.

In the position where this traction is completely released, that is, when the tip of the bed 3 comes into contact with the shearing part 4, the feeding of the bed 3 is stopped and the inner frame 23 is not fully extended. In this case, the remaining portion of the end of the iron frame 23 protrudes beyond the bearing 24.

That is, in the present invention, the rod 23 is not fixed to the bearing 23 and is made to be able to slide freely, so that when there is a surplus in the rod 23, it is made to protrude in the opposite direction of the bearing 24. It is designed to adjust the length.

Next, at the same time that chucking of the workpiece is started in the shearing section 4, the rotating disk 21 is driven, and the rotating shaft 20 is gently moved in the direction opposite to the shearing section 4 by the elastic force of the spring 27. By pulling against the resistance, the width of the rod 23 protruding outward from the bearing 24 is first absorbed, and then the bed 3 is gradually pulled away from the shearing part 4, and the rotating shaft 20 is moved to a position facing the shearing part 4. In this process, the workpiece is chucked one after the other.

That is, in the present invention, the length of the rod 23 is adjusted by screwing the frame portion 23a of the rod 23, and the rotating shaft 20 of the rotating disk 21 is placed at a position facing the shirred portion 4. The feed amount of the workpiece can be determined by determining the position of the chuck 8 of the bed 3, and if the feed amount is extremely reduced, the amount of feed will be reduced at the point when the bed 3 comes into contact with the shearing part 4. Even if the inner frame 23 is not fully extended, the remaining part of the iron frame 23 is sequentially extended to the bearing 2.
4 to prevent the bed 3 from being sent in the shirring section 4 direction more than necessary.

The present invention is designed to achieve specific effects on the above-mentioned properties with a unique structure in its development, and as a fixed length feeding device, it is possible to simply measure the distance between the chuck 8 part and the shearing part 4. This can be easily determined by measuring the amount of feed, making it extremely easy to change, and no special skill is required for setting the feed amount, unlike in the past.

In addition, there is no room for para-crushers to occur during fixed-length feeding, making it possible to cut with strict dimensional accuracy, and the time consumed when moving between operations is small, making it possible to reduce the number of cuts in a short period of time. It has been shown that it is possible to increase this significantly.

It has been particularly effective as a cutting device that requires shorter width and dimensional accuracy than those mentioned above, has a mechanically simple configuration, and can be provided at a relatively low cost. It is what was done.

[Brief explanation of the drawing]

FIG. 1 is a front sectional view of a cutting device which is an embodiment of the present invention, and FIG. 2 is a side sectional view of the same. In addition, in the figure 1... Machine casing, 2... Guide frame,
3...Bed, 4...Shirring part, 5...Bearing, 6...Tail, 7...=
...Frame, 8...Chuck, 9...
... Solenoid, 10... Ram, 11...
... fulcrum, 12 ... rod, 13 ... rubber plate, 14 ... lower blade, 15 ... upper blade,
16... Crank, 17... Connecting rod,
18...Press member, 19, bend, spring, 2
0... Rotating shaft, 21... Rotating disk, 2
2...Rotating shaft, 23...Connecting rod, 24
...Bearing, 25...Stopper part,
26... Slowing member, 27... Spring, 28... Motor 29... Bent speed reducer, 3
G-----Cam, 31-32... Indicates a micro switch.

Claims (2)

[Scope of utility model registration request] (1) The guide rod 2 is slidably mounted on the guide rods 2 to 2.
The bearing for the shaft guide for ~2 is always resilient in the direction of the shearing part 4 with a spring 27 installed parallel to the guide rods 2~2 between the machine frames of the parts 5~5 and the shearing part 4 having a slitter mechanism. A bed part that is pulled and has a chuck mechanism, and this bed 3 part is connected to the above-mentioned sprinkling link 27.
In a cutting device comprising a bed drive unit having a slider crank mechanism for pulling against the elastic force of one end of which can be slid freely, and
The shaft is inserted with a certain free sliding width, and the other end of the continuous rod 23 is fixed to the bed 3 part, and the continuous rod 2
3 is divided into two parts, and one part is made into a male screw frame part 23a and the other part is made into a female screw frame part 23b, so that the length of the continuous rod 23 can be adjusted freely. (2) The slider crank mechanism includes a rotating disk, a rotating shaft eccentrically mounted on the rotating disk, and a bearing fixed on the rotating shaft and perpendicular to the rotating shaft. A short length sizing cutting device according to the present invention.