JPS6016857B2 - metal strip connecting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a connecting device in which the front and rear ends of metal strips are overlapped and cut into strips so that the connection can be made as is.

The current methods of connecting strips are mainly by sewing with a stitcher using wire, by peeling off the coating and plating layer and welding by spot welding, or by cutting and cutting the upper and lower strips symmetrically. There are three methods of inserting the strips into each other, interlocking them, and pressing them flat, but these methods are unnecessarily complicated because the connection points are formed over almost the entire width of the strip, and each method requires a large number of work steps. It usually takes 5 to 10 minutes for one connection operation. Therefore,
For example, after a metal strip is released from a coil, straightened and formed, a liquid raw material for room-temperature hardening resin, such as urethane resin foam, is supplied and placed in a mold to form it to a predetermined thickness. With the manufacturing equipment that is currently on the market, it takes about 40 to 60 minutes to unravel the coils, and it takes about 5 to 10 minutes to connect them. The equipment must be stopped for approximately one hour for connection work. Not only is this a significant waste of work, but when a cold-curing resin is used, the reaction is completed in a short time when the liquid raw material is prepared, so its supply cannot be stopped in time with the connection work. Therefore, it is common practice to accumulate strips in front of the entrance of the molding machine or mold so that the supply of liquid raw materials and molding can be continued even during connection work, but it is common practice to accumulate strips in front of the entrance of the molding machine or mold. Therefore, it is necessary to prepare a large storage section, which requires a large space and high equipment cost. In addition, as mentioned above, when the connection point is formed over almost the entire width of the strip, this part becomes thick and highly rigid.
When it is caught between the rolls of the forming machine, which are adjusted to have a predetermined interval, the resistance increases significantly, overloading the prime mover, damaging the rolls, and causing incomplete bending.

The present invention provides a connecting device that allows the strips to be connected almost instantaneously and the downtime for the connecting operation to be significantly reduced.

That is, the connecting device according to the present invention has an upper blade that is linearly reciprocated and has parallel blade portions of different lengths and whose cutting edge portions are formed in a V shape, and a connecting device that connects the upper blade almost closely. It is equipped with an iron-filled upper blade guide member, and a lower blade that works together with the upper blade guide member to sandwich the band plate and also works with the upper blade to cut the band plate intelligently. It is characterized by being constructed by two lower blade members opposed to each other with a gap that allows the blade to penetrate into the lower blade member. Then, the first cutting edge part bites into the band plate, and then, after a short delay, the second cutting edge part bites into the band plate, cutting through and breaking the two connecting parts having double winding parts facing each other. They form close together and almost simultaneously.

Embodiments of the present invention will be described below with reference to the drawings. ``Figure 1 shows an example in which the connecting device of the present invention is used in a composite material manufacturing device. The strip W, which is made of a thin steel plate, released from the sheet travels to the left in the figure through the pinch rollers 2, the guide rolls 3, and the connecting device 4 according to the present invention, and then is reversed and passed through the forming machine 5 under the frame machine 1. Then, it is molded into a predetermined shape while traveling to the right.Next, the liquid raw material of the cold-setting resin foam is supplied from the supply device 6, and the flexible bag material 7 is stacked on top of it, and the top and bottom are facing each other. A mold 10' for molding a composite material formed by two mold members 8 and 9 consisting of an endless band is inserted, and while moving together with the mold members 8 and 9, foaming of the liquid raw material is completed and a predetermined shape and size are obtained. of the composite material P is continuously manufactured.

When the first strip W has been released, the strip W2 released from the second coil C2 is sent to the connecting device 4 via the pinch roll 11, and its tip is attached to the rear end of the first strip W. The strips W,
, W2 are gently curved at the reversing point between the connecting device 4 and the forming machine 5, and this curved portion is used as the strip plate W, , W2 during the connecting operation.
Even if W2 stops at the connecting device 4, a storage part A is formed in which the molding machine 5, feeder 6, and mold 10 can continue to operate normally. The connecting device 4' is supported and fixed above the frame 1 and extends in a direction perpendicularly across the strips W, W2.
1 and a lower blade bed 22 disposed parallel to the lower part of the blade with the strips W, W2 in between, and two U-shaped frame members 21a, 21a made of steel are arranged back to back with a space between them. A shaft individual member 23 is attached to both ends of the upper blade bed 21.
, 23 are sandwiched and fixed, and a frame-shaped support village 2 is provided in the center.
4 is sandwiched and fixed, and the hole 25 of the ball fixing members 23, 23,
, 25 respectively and fixed with nuts 26, 26 are vertically suspended, and the bases of the hydraulic cylinders 29, 29 are attached to the arms 28, 28 protruding outwardly by pins 30, 3. Attach it from above.

The lower blade bed 22 is made of U-shaped steel frame members 22a, 2.
2a are arranged back to back with a space between them, and bearing members 31? 31 is sandwiched and fixed, the guide gill 27,
27, and a lower blade mounting base 32 is sandwiched and fixed in the center thereof, and protrudes downward from the fluid pressure cylinders 29, 29 to arm sections 33, 33 fixedly protruding outward from the bearing sections 31, 31. The piston village 34, 34 that was made is the pin 35, 35
Connect by. By simultaneously operating the two fluid pressure cylinders 29, 29, the lower blade bed 22 moves into the guide ball 27.
, 27. A hydraulic cylinder 36 is fixed to the support member 24, and an upper blade guide member 37 is fixed to the lower end thereof, and an upper blade 40 is connected by a pin 39 to a piston punch 38 projecting downward from the hydraulic cylinder 36. It is surrounded by two guide pieces 37a, 37a of the upper blade guide member 37 and is carried almost densely into a guide hole 37b that passes through the upper blade guide member 37 vertically.

The upper blade 40' is bifurcated and has two parallel blade pieces 41 and 42 of different lengths, which have a sharp tip 41.
a, 42a and inclined side surfaces 41b, 42b, and blade base portions 41e, 42e having parallel side surfaces 41d, 42d.
, W2 has a fan-flat shape extending in the width direction. Lower blade 4
3 is constituted by two block-shaped lower blade members 43a, 43a which are removably fixed to the upper surface of the lower blade mounting base 32 and have grooves 44 spaced apart so that the upper blade 40 penetrates therethrough almost closely. , the upper edges facing toward the grooves 44 form a green cutting edge 43b. In this embodiment configured in this way, when connecting the two strips W, W2, the lower blade bed 22 is first raised by the fluid pressure cylinders 29, 29 for operating the lower blades, and the upper surface of the lower blade 43 is connected to the upper blade. The guide member 37 is brought close to the cushioning materials 45, 45 made of a rubber layer provided on the lower surface thereof, and the band plates W, , W2 running between them are sandwiched and strongly pressed to stop them.

Next, when the upper blade 40 is lowered by the fluid pressure cylinder 36 for operating the upper blade, the tip 41a of the first cutting edge portion 41c bites into the strips W, W2, and a little later, the second cutting edge portion 42c. The tips 42a of the strips 42a bite into and penetrate the strips W, W2. The parallel front and rear surfaces of the upper blade 40 cooperate with the cutting edge 43b of the lower blade 43 to scale the strips W, W2, and as the two cutting edge portions 41c and 42c bite, the oblique sides 41b, 42b gradually rolls up the broken part downwardly, and the two connection points having double rolled-up parts C facing each other are formed close to each other almost simultaneously by the stacked strips W, W2. Yes (Figure 5). The entrainment capital C is formed in the groove 44 of the lower blade 43, and by raising the upper blade 40 and pulling it out from the groove 44 and the strips W, W2, the lower blade 43 is simultaneously lowered to remove the strips W, W2. was released and resumed driving. In the embodiment of FIG. 1, an auxiliary stopping device 49 is provided slightly behind the connecting device 4, consisting of a hydraulic cylinder 48 for raising and lowering the upper and lower rolls 46, 47 and the upper roll 46, and is provided only during the subsequent operation described above. The rolls 46, 47 sandwich the strips W, , W2 and are stopped.

In addition, two or more pieces may be installed at appropriate intervals in the width direction or length direction of the upper blade four-way band plates W, , W2 and connected at two or more places.

Further, the upper blade 40 and the lower blade 43 may be operated by means such as a hydraulic cylinder, an electric motor, gears, or a ring mechanism for linear reciprocating motion, or the lower blade 43 may be fixed and the upper blade 40 and the upper blade guide may be operated. The member 37 may be reciprocated in a straight line. A through hole of the upper blade 40 remains at the connection point where the punched trout was cut to form the double winding part C, but if necessary, the worker can cover up any dirt by pasting adhesive tape or the like, and the band The overlapping portion of the plates W, , W2 cannot be sold as a product and is therefore discarded.

As described above, the present invention is constituted by an upper blade having a V-shaped cutting edge portion and a lower blade consisting of a lower blade member opposed to each other with an interval such that the upper blade penetrates the upper blade almost closely, and an upper blade guide member. The strip is sandwiched between the upper blade and the lower blade, and the upper blade moves back in a straight line to penetrate the strip and cut the strip in cooperation with the lower blade. The broken part is gradually rolled up laterally to form a rolled-up part, and since this rolled-up part is formed by stacking two strips and is double, it is necessary to connect them.

Then, by simply reciprocating the upper blade and, if necessary, the lower blade in a straight line and making deep cuts, a connection point with double winding parts facing each other is formed, so the connection can be made almost instantaneously, instead of taking a long time as in the conventional method. There is no need to stop the process, so a large storage section is not required, and a large space is not required, equipment costs are reduced, and continuous work is not hindered.

In particular, since the blade portions of the upper blade according to the present invention are parallel and have a bifurcated shape with different lengths, the two connection points are close to each other and are formed almost simultaneously, making a strong connection possible. Because the strip does not start biting at the same time, it can be cut without requiring a lot of force, and a large initial shearing force is generated at the same time when the cutting edge starts biting, causing breakage between the rock-cut parts of the strip. It does not cause any inconvenience.

In addition, since the connection points cannot be provided over almost the entire width of the strip, for example, by providing the connection points in areas that do not hit the rolls of the molding machine, it is possible to form the metal strip into an accurate predetermined shape and prevent damage to the molding machine, etc. It can be molded without worrying about damage.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view showing an example of the use of the connecting device according to the present invention, Fig. 2 is a vertical sectional view showing an embodiment of the invention, Figs. -A view seen in the Y direction, FIG. 5 is a diagram for explaining the connection work, and FIG. 6 is a perspective partial view of the connected strips. 4... Connection fitting, 21... Upper blade bed, 22... Lower blade bed, 27... Guide shaft,
29...Fluid pressure cylinder, 36...Fluid pressure cylinder, 37...Upper blade guide member, 40...
・Top blade, 41a42a... Tip, 41b, 42
b...Forehead oblique side, 41c, 42c...Blade tip portion, 43...Lower blade, 44...Groove, 43a
...Lower blade member. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] 1. An upper blade 40 having two parallel blade portions 41 and 42 of different lengths, the blade edge portions 41c and 42c of which are formed in a V shape and capable of reciprocating in a straight line, and this upper blade 40.
an upper blade guide member 37 into which the upper blade guide member 37 is fitted almost tightly, and a lower blade 43 that cooperates with the upper blade guide member 37 to sandwich the strip and also cooperates with the upper blade 40 to shear the strip. The blade 43 is the upper blade 40
A connecting device for metal strips, characterized in that it is constituted by two lower blade members 43a, 43a facing each other with an interval that allows the metal strips to penetrate almost densely.