JPH01321193A - Cutting device for tapelike or linear material - Google Patents

Abstract

PURPOSE:To make a tape or the like cuttable into specified length with only a repetition of c.w. or c.c.w. rotation for which a stepping motor is controlled, by energizingly installing a cutter 11 resiliently centering on a shaft fulcrum so as to make a cutter edge contact with a surface of material on a route at an incline of clearance free to the forward direction of this material. CONSTITUTION:When a clockwise command is given to a stepping motor 7 of a tape drive mechanism 6, a feed roller is rotated clockwise, making a tape 1 go forward. When a tip of the first label on the tape passes through a sensor 5, a signal is emitted, and it is inputted into a control unit. A motor is controlled by this control unit, and the tape 1 is advanced forward as long as a distance adding cut allowance delta to a distance l between the sensor 5 and a cutter 11. During this forward movement, the cutter 11 gets away in the counterclockwise direction with a friction factor, allowing this passage. When this tape 1 is advanced as long as the specified distance, the motor 7 is reversed, making the tape 1 go back, and the cutter 11 is rocked clockwise by the friction factor, thus it cuts a material.

Description

[Detailed Description of the Invention] [Summary] The present invention relates to a device for cutting a continuous tape or wire into a predetermined length, and is processed for the purpose of providing a cutting device that has a simple structure and is easy to increase speed. A bed provided directly below the travel path of the tape-shaped or linear material, and a shaft above the bed that is swingable along the path with the blade facing downward in a direction that crosses the path. The cutter includes a supported cutter, a pair of gripping rollers that grip and travel the material, and a driving means that alternately rotates the gripping roller in forward and reverse directions, and the cutter comprises:
The blade is configured to be elastically biased about the pivot point so as to contact the surface of the material on the path at an inclined angle with respect to the advancing direction of the material.

[Industrial application field]

The present invention relates to an apparatus for cutting a continuous tape or wire into a predetermined length.

[Conventional technology]

When it is necessary to cut a continuous tape, wire, or other long material into a predetermined length or make cuts depending on the application, conventionally, as shown in FIG. 7, for example,
A bed 21 is provided directly below the running path of the continuous material 20, and a pair of rollers = M that repeat normal rotation and stop intermittently cause the material 20 to repeatedly move forward and stop at a predetermined timing. A cutter 24 mounted upward and movable along a vertical guide 23 is raised and lowered in response to the movement of the continuous material 20, and when the material stops, the cutter descends and its blade comes into contact with the material 20. In this way, the amputation was carried out.

[Problem to be solved by the invention]

In this device, it is necessary to temporarily stop the movement of the material during cutting, and to raise and lower the cutter 24 at a predetermined timing during this stopping period, which makes it difficult to speed up the work, and the structure is complex and sturdy. I had no choice but to do so.

It is an object of the present invention to solve the problems of the prior art and to provide a cutting device that has a simple structure and can be easily increased in speed.

[Means to solve the problem]

This object is achieved by the device for cutting tape-like or wire-like materials according to the invention, which is shown in FIG. This device includes a bed 10 provided directly below the travel path of a tape-like or linear material 10 to be processed, and a blade 11a facing downward in a direction that crosses the path above the bed 10, corresponding to the bed 10. A cutter 11 is rotatably supported along the path, a pair of gripping rollers consisting of a feed roller 8 and a pressure roller 9 that grip and run the material 1, and a pair of gripping rollers that rotate in the normal direction. The cutter 11 is provided with a driving means consisting of a stepping motor 7 that alternately applies reverse rotation, and the cutter 11 drives its blade 11a onto the surface of the material 1 on the path at a free inclination θ with respect to the advancing direction of the material. They are elastically biased about the pivot point to bring them into contact.

[For production]

The continuous material 1 moves forward by a distance corresponding to a predetermined cutting length and then moves back slightly on a travel path by a feed roller 8 and a pressure roller 9, which repeatedly rotate in forward and reverse directions.

When moving forward, the material 1 having a length corresponding to the cut length passes between the cutter blade 11a and the bed 10 and moves forward. At this time,
Since the cutter 11 is in a position that allows it to escape in the direction of movement of the material 1, the material 1 is smoothly advanced.

Then, when the rollers 8.9 are slightly reversed, the material 1 is also slightly retracted correspondingly, and the cutter 11 swings clockwise in the figure due to the contact friction with the material surface. Then, the cutting edge bites into the material 1, and the part 1a of the material located in front of the blade 11a is prevented from retreating, but the part 11b located behind the blade 11a continues to retreat, so that cutting occurs here. The front portion 1a of the same material is cut to a predetermined length.

By repeating this forward and backward cycle, a predetermined length of material is sequentially cut in front of the cutter blade.

Hereinafter, the present invention will be explained in more detail based on preferred embodiments shown in the drawings.

〔Example〕

FIG. 1 shows an overall side view of a tape material cutting device embodying the present invention.

A tape 1 to be cut is wound up into a roll 2 and rotatably placed on a pair of support rollers 3.

As shown in FIG. 2, the tape 1 is pasted with a row of labels in which adhesive labels 4 each having a length a are arranged intermittently at predetermined intervals. Afterwards, each label 4 is peeled off from the tape and affixed to a product or the like for use.

A label detection sensor 5 is provided on the tape running path on the downstream side of the support roller 3, and detects passage of the leading or trailing end of each label 4 on the tape, issues a signal, and inputs the signal to a control unit (not shown). It is configured as follows.

Furthermore, a tape drive mechanism 6 is installed on the tape running path downstream of this sensor. This drive mechanism 6 includes a feed roller 8 connected to a stepping motor 7 that repeatedly rotates forward and reverse by a predetermined amount in response to commands from a control unit (not shown), and a feed roller 8 that applies a constant pressure onto the feed roller 8. The pressure roller 9 is pressed, and the tape 1 is
is gripped between these rollers 8 and 9, and is configured to be able to advance in accordance with the rotation of the feed roller 8. In addition,
The feed roller 8 is preferably made of a hard metal such as stainless steel with a roughened surface, while the pressure roller 9 is preferably made of an elastic material such as hard rubber.

As shown in detail in FIG. 3, a bed 10 is installed below the tape running path on the downstream side of the tape drive mechanism 6.
Above it is a blade 11 pointing downward in a direction that crosses the travel route.
A cutter 11 with a cutter 11 is provided. The cutter 11
is placed with its blade 11a in contact with the surface of the tape 1 on the running path at an inclined angle θ that is substantially perpendicular to the tape's advancing direction as shown by the arrow in the figure, and has a blade 11a that is in contact with the surface of the tape 1 on the running path. It is biased with a predetermined pressure to rotate clockwise.

Next, the operation of the tape constant length cutting device of the present invention having such a configuration will be explained.

When a normal rotation command is given to the stepping motor 7 of the tape drive mechanism 6 at the time of start, the feed roller 8 rotates in the normal direction and the tape 1 is advanced. first label 4a on tape
When the tip of the label passes through the label detection sensor 5, a signal is generated and input to a control unit (not shown). Since the rotation speed of the feed roller 8 corresponding to the distance l between the sensor 5 and the cutter 11 is stored in advance in the control unit, the control unit receives the signal and controls the stepping motor 7 to maintain this distance l. The tape 1 is advanced by a distance equal to the cutting width δ. During advancement of the tape 1, the cutter 11 escapes in a counterclockwise direction due to frictional contact with the tape surface, allowing its passage, as shown in FIG. When the tape 1 advances by a predetermined distance, the stepping motor 7 stops and at the same time immediately turns into a reverse rotation, causing the feed roller 8 to reverse and retracting the tape 1 by a small distance. Then, the fifth
As shown in the figure, the blade 11a of the cutter 11 rotates clockwise in the figure in accordance with the urging force of the spring 12 due to contact friction with the tape surface, and bites into the tape 1. As a result, the portion 1a of the tape 1 located in front of the blade 11a is held between the blade 11a and the bed 10 and is prevented from retreating, while the rear portion 11b continues to retreat, so that the blade 11a bites into the tape 1. The image portion is cut along the dashed line.

The relationship between the forces acting on the tape and the cutter in this case is as shown in Figure 6, and in the case of the cutter inclination angle shown in the figure,
Vertical force F2 is about 4 times the force F1 that moves the tape backwards.
is obtained. To give an example of the forward and backward distances in actual work, when cutting a resin tape with a thickness of 0.05 mm, at a processing speed of 12 m/min, the forward movement is 70 M.
Suitable cutting was possible with a retraction of about 0.7 mm.

Every time the sensor 5 detects the tip of the label 4, the control unit independently and sequentially controls the stepping motor 7 based on each signal, thereby controlling the tape portion to which the label 4 is attached. are precisely cut one after another.

The label detection sensor 5 is particularly useful when each label 4 has the same length and is applied on the tape at a constant pitch, or when a continuous tape material simply needs to be cut to a constant length. Even without the provision, it is possible to perform a fixed length cut by controlling the step motor 7 to rotate forward and reverse at the same cycle.

It goes without saying that the present invention is not limited to tape materials as in the above-mentioned embodiments, but can also be applied to wire materials such as wires.

〔Effect of the invention〕

As described in detail above, according to the present invention, the cutter is provided at an angle on the tape running path, and the tape is configured so as not to prevent the tape from moving forward but to prevent it from retreating. It is possible to cut tape, etc., simply by repeating the controlled forward and reverse rotation of the stepping motor. This makes it possible to obtain a tape cutting device with a simple configuration and high productivity.

[Brief explanation of the drawing]

1 is a side view of a tape material cutting device according to an embodiment of the present invention; FIG. 2 is a plan view showing an example of the configuration of the tape material; FIG. 3 is a side view showing details of the cutter mechanism; Figure 4 shows
FIG. 5 is a side view showing the rotation of the cutter when the tape moves forward; FIG. 5 is a side view showing the rotation of the cutter when the tape moves backward; FIG. FIGS. 7(a) and 7(b) are a side view and a front view of the main parts of a conventional cutting device. 1- Tape material, 4... Label, 5-
... Label detection sensor, 6 Tape drive mechanism, 7-
...Stepping motor, 8...-Feed roller, 9-
Pressure roller, 10- bed, 11 cutter, 11a... cutter blade, 12 spring

Claims (1)

[Claims] 1. A bed (10) provided directly below the traveling path of the tape-shaped or linear material (1) to be processed;
) and above it in a direction transverse to said path (
a cutter (11) pivotally supported so as to be able to swing freely along the path with the cutter (11a) facing downward; a pair of gripping rollers (8, 9) for gripping and running the material (1); Drive means (7) that alternately rotates the rollers (8, 9) in forward and reverse directions;
), and the cutter (11) has a blade (11a) thereof.
The tape is elastically biased about the pivot point so as to contact the surface of the material (1) on the path at an inclined slope with respect to the advancing direction of the material (1). Cutting device for shaped or linear materials.