JP2550194B2 - Long strip hoop cutting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a long strip-shaped hoop material such as a lead frame made of a metal plate used for manufacturing electronic components, for example, at appropriate lengths. It relates to a device for cutting into.

[Conventional technology]

Conventionally, in order to cut a long strip-shaped hoop material such as the lead frame or the like into appropriate lengths, this hoop material is intermittently transferred by an appropriate length, and when the transfer is stopped. The method of cutting with a pair of cutter blades is adopted.

[Problems to be Solved by the Invention]

However, in the conventional cutting method, since a means for intermittently transferring the long strip-shaped hoop material by an appropriate length is required, the structure of the cutting device is complicated, and the cutting device is significantly enlarged. In addition, there is a problem that large vibration and noise are generated, and moreover, the transfer speed of the hoop material is intermittent because the hoop material is intermittently moved by an appropriate length, so that the cutting speed is extremely slow.

In order to solve this conventional problem, the present invention is to cut a long strip-shaped hoop material into an appropriate length under the condition that the hoop material is continuously transferred at a constant speed. It is an object of the present invention to provide a cutting device that can be operated at high speed.

[Means for solving the problem]

In order to achieve this object, the present invention provides "a pair of left and right guide members extending in the longitudinal direction along the front surface and the back surface of the hoop material in a path for transferring the long strip-shaped hoop material at an appropriate speed in the longitudinal direction thereof. , The space between the guide members is arranged substantially parallel to each other so as to form a wide space portion between the guide members, which allows the hoop member to be flexibly deformed toward the front surface or the back surface thereof. At the inlet end of the hoop material to the space, a continuous rotation type feed roller for feeding the hoop material into the space is arranged, while at the both guide members, the outlet end of the hoop material from the space is provided. The receiving cutter blade is fixed to each of the above, and at the outlet end of the hoop material from the space portion, a reciprocating cutter body having a cutter blade for each of the both receiving cutter blades is provided on both sides of the outlet. Reciprocating end It is arranged so that it will be arranged. ”

[Action]

In this structure, the long strip-shaped hoop material continuously fed by the continuously rotating feed roller into the wide space between the guide members is the cutter at the outlet end of the space between the guide members. The body is cut by advancing toward the receiving cutter blade of one of the two guide members.

During cutting by the forward movement of the cutter body, the tip of the hoop material comes into contact with the cutter body, so that the tip of the hoop material stops being sent out from the outlet end of the space between the guide members. On the other hand, the hoop material is continuously fed by the feed roller into the space between the guide members, so that the hoop material resists elasticity in the space between the guide members. It is stored in a state of being bent and deformed in a curved shape or a zigzag shape to the front surface or the back surface side.

Then, when the outlet end of the space portion is opened by the forward movement of the lower end of one guide member of the cutter body toward the receiving cutter blade, it is stored in a deformed state in the space portion between the guide members. The hoop material returns to its original linear shape due to its elasticity, and the hoop material is continuously fed into the space portion by the feed roller, so that the hoop member is not fed from the outlet end of the space portion between the guide members. Since the material is sent out by a predetermined length, it is cut by the return movement toward the receiving cutter blade of the lower end of the other guide member in the cutter body, and by repeating the above operation, continuous The long strip-shaped hoop material that is automatically sent is cut into appropriate lengths without stopping the continuous transfer.

〔The invention's effect〕

Therefore, according to the invention: The long strip-shaped hoop material can be cut for each length dimension under the condition of being continuously transferred at an appropriate speed, and as in the conventional case, for each predetermined length of the hoop material. At the time of cutting, it is not necessary to stop the transfer of the hoop material, in other words, since it is not necessary to configure the long strip-shaped hoop material to be transferred intermittently, the structure of the cutting device is significantly simplified and The cutting device can be downsized.

. Cutting the long strip-shaped hoop material, by performing reciprocating movement of both forward and backward movement in the reciprocating cutter body, the number of cuttings is twice the number of reciprocating movements of the cutter body, The cutting speed is increased without increasing the reciprocating speed of the cutter body, and thus without increasing the speed of the drive mechanism for reciprocating the cutter body, and by extension, the durability due to the speeding up of the drive mechanism. Can be significantly improved without lowering noise and increasing noise.

. By fixing both receiving cutter blades for cutting the hoop material between both cutter blades in the cutter body to both guide members, the structure for attaching both receiving cutter blades becomes simple, and cutting Further miniaturization of the device can be achieved.

It has the effect of saying.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings of FIGS.

In this figure, reference numeral 1 indicates a long strip-shaped hoop material, and the hoop material 1 is continuously fed at a suitable speed in its longitudinal direction in a horizontal state by a pair of upper and lower continuously rotating feed rollers 2 and 3. Has been transferred.

Reference numeral 4 indicates a machine frame frame which is erected on the side of the hoop material 1, and the hoop material 1 is downwardly converted from a horizontal state to a downward direction on the upper front surface of the machine frame frame 4. On the front surface of the machine frame 4, the pair of feed rollers 5, 6 are provided on the front side of the machine frame 4, while the pair of left and right feed rollers 5, 6 are arranged so as to be continuously transported at an appropriate speed.
A pair of left and right guide members 7 and 8 extending substantially in the longitudinal direction along the front surface 1a and the rear surface 1b of the hoop material 1 are provided at both left and right sides of the hoop material 1 which are fed downward from the guides. Wide width W between members 7 and 8
It is provided so as to form the space portion 9.

Further, receiving cutter blades 10 and 11 for cutting the hoop material 1 are fixed to the lower ends of the guide members 7 and 8, respectively, while the lower end portions of the guide members 8 are provided on the left and right sides. Cutter blade 1 for each of the two receiving cutter blades 10, 11
A cutter body 12 provided with 2a and 12b is provided, and the cutter body 12 is configured to reciprocate laterally so that the cutter body 12 opens and closes the outlet end of the space 9.

In this structure, the space 9 between the guide members 7 and 8
In addition, the long strip-shaped hoop material 1 continuously fed by the pair of left and right continuously rotating feed rollers 5 and 6 has a cutter body at the exit end of the space 9 between the guide members 7 and 8. As shown in FIG. 3, 12 is cut by advancing toward the receiving cutter blade 10 of one guide member 7 of the two guide members 7, 8.

During the cutting by the forward movement of the cutter body 12, the tip of the hoop material 1 comes into contact with the cutter body 1 so that the tip of the hoop material 1 becomes a space portion 9 between the guide members 7 and 8. While the feeding from the outlet end is stopped, the hoop material 1 is continuously fed by the feed rollers 5 and 6 into the space 9 between the guide members 7 and 8, so that the hoop material 1 is continuously fed. Is stored in the space 9 between the guide members 7 and 8 in a state of being bent or deformed in a curved shape or a zigzag shape to the front surface or the back surface side thereof against the elasticity as shown in FIG. .

When the outlet end of the space 9 is opened by the forward movement of the lower end of the one guide member 7 of the cutter body 12 toward the receiving cutter blade 10, both guide members 7, 8
The hoop material 1 stored in the space portion 9 in the space between the hoop materials 1 in a flexurally deformed state returns to the original straight shape due to its elasticity, and the hoop material is fed into the space portion 9 by the feed rollers 5 and 6. By being continuously fed, the hoop material 1 is fed from the exit end of the space 9 between the guide members 7, 8 by a predetermined length L. It is cut by the return movement toward the receiving cutter blade 11 at the lower end of the other guide member 8, and the continuous transfer of the continuously fed long strip-shaped hoop material 1 is stopped by repeating the above-mentioned operation. Instead, it is cut appropriately for each length L.

[Brief description of drawings]

Drawing shows an embodiment of the present invention, FIG. 1 is a perspective view, FIG. 2 is a front view, FIG. 3 and a front view showing the first operating state, and FIG.
The figure is a front view showing a second operating state. 1 ... Hoop material, 4 ... Machine frame, 5,6 ... Feed roller, 7,8 ... Guide member, 9 ... Space part, 10, 11 ... Receiving cutter blade, 12 ... Cutter body, 12a, 12b …… Cutter blade.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshio Kurita, 21, Saiin Mizozaki-cho, Ukyo-ku, Kyoto City, Kyoto Prefecture ROHM Co., Ltd. 56) References JP-A-58-202250 (JP, A) JP-A-52-105390 (JP, A) JP-B-63-50158 (JP, B1)

Claims (1)

(57) [Claims] 1. A pair of left and right guide members extending in the longitudinal direction along a front surface and a back surface of the hoop material are provided on a path for transporting a long strip-shaped hoop material at an appropriate speed in the longitudinal direction. The hoop members are arranged substantially parallel to each other so as to form wide spaces that allow flexural deformation of the hoop members to the front surface or the back surface side, and the hoop members are inserted into the space parts between the guide members. At the inlet end, a continuous rotation type feed roller for feeding the hoop material into the space is arranged, while at the both guide members, a receiving cutter blade is provided at each outlet end of the hoop material from the space. Fixed,
Further, at the outlet end of the hoop material from the space portion, a reciprocating cutter body provided with a cutter blade for each of the receiving cutter blades on both sides is disposed so as to reciprocate at the outlet end. A device for cutting a long strip-shaped hoop material.