JPH1067453A - Tape feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tape feeder by which reinforcing tape, which is used for a sewing part and provided with an adhesive layer on one side, is pulled out from a tape roll so as to be automatically fed by a proper quantity. SOLUTION: On the front face of a case 1, a feed wheel 2, a peeling roller 3, a measuring roller 4, a terminal step roller 5 are arranged. In the feed wheel 2, a feeding arm 12 constructed of four screw shafts is protruded on one side face of a disk 11. The disk 11 is fixed in an output shaft of a motor 7. A reinforcing tape T led out from a tape roll is wound up so that its adhesive layer 13b is brought into contact with the feeding arm 12. The tape stuck on the feeding arm 12 is peeled off by means of the peeling roller 3 so as to fed out to the following measuring roller 4. The measuring roller 4 is oscillationally displaced according to a tape quantity so as to always hold the tape with tension. The oscillational displacement of the measuring roller 4 is detected by means of a sensor 6, and then, the motor 7 is started/stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION In the manufacturing process of shoes and bags, an adhesive tape for reinforcing sewn parts is used. The present invention relates to a tape feeder for pulling out this kind of reinforcing tape from a tape roll overcoming its own adhesive strength and automatically feeding the tape without excess or shortage.

[0002]

2. Description of the Related Art For example, when a cut edge of a sewn part of a shoe is folded back to the back side and sewn, a reinforcing tape is applied along the cut edge. At this time, the operator pulls out an appropriate amount of reinforcing tape from the tape roll, and then attaches the pulled-out reinforcing tape to the sewing parts. The reinforcing tape is based on a cloth having a width of 3 to 5 mm, and has an adhesive applied to one or both sides thereof, and is supplied in a tape roll state.

[0003]

As described above, conventionally, it is necessary to manually pull out the reinforcing tape from the tape roll, and the tape pulling-out operation and the attaching operation to the sewn parts are performed alternately. It took a lot of trouble and time to work.

The present inventor has previously been involved in the development of a tape feeder for automatically feeding a stretch rubber such as lace rubber to a sewing machine in a free state. Therefore, an attempt was made to automatically feed a reinforcing tape having adhesiveness using a tape feeder of this type. However, since the width of the reinforcing tape was extremely small and an adhesive was applied to one side, it was found that if the reinforcing tape slackened during feeding, the tape would be twisted and the adhesive surfaces would easily adhere to each other. Also, when performing tape feed through a reinforcing tape between a pair of rollers,
It was found that the tape was wound while the adhesive surface of the tape was stuck to the peripheral surface of one of the rollers, making it impossible to feed the tape.

It is an object of the present invention to provide a tape feeder capable of withdrawing an adhesive reinforcing tape from a tape roll by overcoming the adhesive force of the tape itself and automatically feeding an appropriate amount of the tape. SUMMARY OF THE INVENTION An object of the present invention is to enable an appropriate amount of reinforcing tape to be pulled out from a tape roll in accordance with the degree of consumption of the reinforcing tape at a destination, and to automatically and intermittently feed the reinforcing tape by an appropriate amount without excess or shortage.

[0006]

In the tape feeder of the present invention, a sewing reinforcing tape T having an adhesive layer 13b provided on at least one side is pulled out from a tape roll R and automatically fed. The tape feeder is driven to rotate by a motor 7 fixed to the case 1, and pulls out the reinforcing tape T from the tape roll R to operate the feed wheel 2.
A weighing roller 4 that is reciprocally supported by the case 1 and is urged to move toward the side where the reinforcing tape T is tensioned, and detects the remaining state of the reinforcing tape T sent out from the feed wheel 2; A sensor 6 for detecting a displacement state of the roller 4 and a control circuit 30 for controlling an operation state of the motor 7 according to an output signal of the sensor 6 are provided. The feed wheel 2 is provided with a plurality of delivery arms 12 for contacting the adhesive layer 13b and forcibly delivering the reinforcing tape T. In the vicinity of the feed wheel 2, a peeling roller 3 for peeling off the reinforcing tape T attached to the delivery arm 12 is provided.

More specifically, an arm 25 that supports the measuring roller 4 is swingably supported by the case 1 as shown in FIG. 3, and is urged by a spring 28 to the side where the reinforcing tape T is tensioned. . The micro switch 6 is provided so as to face the swing locus of the arm 25.

Arm 18 swingably supported by case 1
Then, the peeling roller 3 and the cam follower 23 are pivotally supported. The arm 18 is urged to swing by a spring 21 in a direction in which the peeling roller 3 approaches the rotation trajectory of the delivery arm 12. Spring 21
A cam 22 that swings the cam follower 23 away from the delivery arm 12 against the urging force of the cam 2.
2 is provided so as to be rotatable with the feed wheel 2.

In the tape path on the upper side of the feed wheel 2, there is provided a first-stage roller 14 for guiding the reinforcing tape T by winding it around the delivery arm 12. In the tape path on the lower side of the measuring roller 4, there is provided a final-stage roller 5 for winding and guiding the reinforcing tape T around the measuring roller 4. The delivery arm 12 of the feed wheel 2 is formed by a screw shaft.

[0010]

In the use state, the adhesive layer 13b of the reinforcing tape T drawn out from the tape roll R is wound around and attached to the delivery arm 12 of the feed wheel 2. By utilizing this adhesive force, the slip of the reinforcing tape T is prevented, and the feed wheel 2 alone can pull out the reinforcing tape T from the tape roll R by overcoming the adhesive force of the tape itself. Reinforcing tape T attached to the delivery arm 12
A peeling roller 3 is provided in the vicinity of the feed wheel 2 in order to peel off and send out. Feed wheel 2
Is wrapped around the weighing roller 4 and held tightly.

When the tape feeding is started, the measuring roller 4
Is prevented in the direction biased by the spring 28 to prevent slack, and when the remaining tape amount decreases with the consumption of the reinforcing tape T,
The measuring roller 4 is displaced against the urging force of the spring 28 or the like,
The reinforcing tape T is always kept taut. At this time, the displacement of the weighing roller 4 is detected by the sensor 6, and the motor 7 is started or stopped, or its speed is changed to a higher or lower speed to control the feeding operation of the feed wheel 2.

[0012]

1 to 4 show a first embodiment of a tape feeder according to the present invention. In FIG. 2, the tape feeder has a square box-shaped case 1 as a support, and a feed wheel 2, a peeling roller 3, and a measuring roller 4 on its front side.
And a final-stage roller 5, a sensor 6, and the like, and accommodates a geared motor (motor) 7 with a brake for rotating and driving the feed wheel 2 in the case 1, and electric components such as a transformer and a circuit board. A column 8 is erected outside one side of the case 1, and a tape roll R is rotatably supported on a horizontal roll support shaft. Reference numeral 9 denotes a flange fixed to the roll support shaft.

3 and 4, a feed wheel 2 is composed of a disk 11 fixed to an output shaft 7a of a geared motor 7, and four delivery arms 12 projecting from a side surface of the disk 11 facing the case 1. Become. Each delivery arm 12 is formed using a screw shaft, and is arranged at equal intervals in the circumferential direction of the disk 11 and at four places in the figure. Tape roll R
The adhesive layer 13b of the reinforcing tape T derived from the
A first-stage roller 14 is provided on the upper wall of the case 1 near the feed wheel 2 to guide the reinforcing tape T in a reverse direction. The first stage roller 14 is V
It is formed in the shape of a V-shaped pulley having a V-shaped guide groove, and is supported freely by a bracket 15 fixed to the case 1 via a shaft 16 and a bearing.

The reinforcing tape T wound around the delivery arm 12
Is connected to each of the delivery arms 12 so that the delivery arms 12 are connected at the shortest distance, and the adhesive layer 13b is adhered to the delivery arms 12. By utilizing this adhesive force, the reinforcing tape T can be pulled out from the tape roll R by using the feed wheel 2 alone to overcome the adhesive force of the tape itself while preventing the reinforcing tape T from slipping. In order to forcibly peel off the reinforcing tape T adhered to the delivery arm 12 and securely send it out of the feed wheel 2, a peeling roller 3 is provided below the rotation locus of the delivery arm 12.

As shown in FIG. 3, the peeling roller 3 is rotatably supported at the distal end of a horizontally long arm 18 via a shaft 19 and a bearing, and the base end of the arm 18 is supported on the case 1 via a shaft 20. I do. Thereby, the peeling roller 3 can reciprocate while crossing the rotation trajectory of the delivery arm 12 in and out.
A tension coil-shaped spring 21 is stretched between the middle part of the arm 18 and the case 1 to urge the arm 18 to swing upward.

As shown in FIG. 3, the arm 18 is
The swinging operation is performed downward against the urging force of the adhesive tape 13 so that the peeling roller 3 pushes down the reinforcing tape T, and the adhesive layer 13
b is forcibly separated from the delivery arm 12. in this way,
In order to operate the arm 18 downward, the feed wheel 2
A plate-like cam 22 is arranged near the case 1 side, and is fixed to the output shaft 7 a of the geared motor 7. further,
A cam follower 23 composed of a roller having the same diameter as the peeling roller 3 is supported at the base end of a shaft 19 that supports the peeling roller 3 via a bearing so as to be freely rotatable.

The cam 22 is formed of a cross-shaped star wheel, and a cam follower 23 is always circumscribing the peripheral surface thereof.
The circumferential position of each arm of the cam 22 is provided so as to coincide with the circumferential position of the delivery arm 12, and the diameter of the rotation locus of the protruding end of the arm is set to be larger than the diameter of the rotation locus of the delivery arm 12. I have. Therefore, the cam follower 23 is
By swinging downward against the urging force of the spring 21, the reinforcing tape T adhered to the delivery arm 12 can be reliably peeled off.
As described above, since the delivery arm 12 is formed by a screw shaft, the adhesive layer 13b of the reinforcing tape T adheres only to the screw thread. This also facilitates peeling of the reinforcing tape T.

In order to hold an appropriate amount of the reinforcing tape T sent out from the feed wheel 2 as described above and to control the operation state of the geared motor 7, the measuring roller 4 is used.
And a sensor 6 are provided.

The metering roller 4 is formed in the same V-shaped pulley shape as the above-described first-stage roller 14, and the feed wheel 2 is provided.
3, and is supported at the lower end of a vertically long arm 25 via a shaft 26 and a bearing so as to be freely rotatable, as shown in FIG. The upper end of the arm 25 is supported by the case 1 via a shaft 27 so as to be swingable right and left. Further, a tension coil-shaped spring 28 bridged between the middle part of the arm 25 and the case 1 urges the arm 25 to swing away from the feed wheel 2. The reinforcing tape T sent out from the feed wheel 2 is guided in reverse by the measuring roller 4 and then wound around the final roller 5 and guided again in reverse. Therefore, the base layer 13a (the cloth surface) of the reinforcing tape T circumscribes the guide groove of the measuring roller 4.

When the reinforcing tape T is sent out from the feed wheel 2, the arm 25 is pulled by the spring 28 and swings counterclockwise. The tape having a length approximately twice as long as the swing amount is always kept tight by the measuring roller 4. Arm 2
Reference numeral 5 designates a swing limit defined by a stopper 29 fixed to the case 1, and cannot swing in the counterclockwise direction any further. Therefore, immediately before the arm 25 comes into contact with the stopper 29, it is necessary to stop driving the geared motor 7 and interrupt the feeding of the reinforcing tape T.

For the above control, the sensor 6 is disposed at a position facing the swing locus of the arm 25. In this embodiment, a microswitch is used as the sensor 6, and an on / off signal of the microswitch operated by the arm 25 is received by the control circuit (see FIG. 1) 30 to start or stop the geared motor 7. did. That is, the feed wheel 2 is intermittently driven to rotate.

The last-stage roller 5 is a guide roller having the same structure as the first-stage roller 14 described above, and is freely rotatably supported by the case 1 via a shaft 31 and a bearing.
The reinforcing tape T that has passed through the final stage roller 5 is guided to a delivery guide 32 fixed to the front right side of the case 1 and supplied to an operator who pastes the reinforcing tape T. As shown in FIG. 2, electric components such as a power switch, a speed adjusting knob 33 for changing the driving speed of the geared motor 7, and a pilot lamp 34 are arranged on the case side wall on the side of the delivery guide 32. A changeover switch 35 for selecting a power supply voltage is provided on the other case side wall.

According to the tape feeder constructed as described above, by pulling the reinforcing tape T derived from the delivery guide 32 toward the operator, the measuring roller 4 swings toward the feed wheel 2 and the sensor 6 Then, the switch knob which has been pushed into the switch case by the arm 25 projects so far, and the contact is switched. Upon receiving this signal, the control circuit 30 immediately starts the geared motor 7 and drives the feed wheel 2 to rotate. Thereafter, the measuring roller 4 returns and swings to hold the reinforcing tape T slightly, and the contact point of the sensor 6 is switched to change the geared motor 7.
And the operation of starting the geared motor 7 and sending the reinforcing tape T again are repeated until the operator finishes the tape pull-out operation. Therefore, only the necessary amount of the reinforcing tape T required by the operator can be automatically fed without excess or shortage.

In the above embodiment, the peeling roller 3 and the measuring roller 4 are supported by the swingable arms 18 and 25 so that they can reciprocate. However, this is not necessary. For example, the slider can be reciprocally supported by a guide such as a guide shaft or rail fixed to the case 1, and the rollers 3 and 4 can be supported by the slider. As the springs 21 and 28, a compression spring, a torsion coil spring, a leaf spring, or the like can be applied. When setting the tape path in which the measuring roller 4 reciprocates up and down, the measuring roller 4 and the arm 2
By using the weight of 5, the measuring roller 4 can be moved and urged downward. By supporting the tape roll R so as to be rotatable about a vertical axis, a tape delivery path can be set along the upper surface of the case 1.

FIG. 5 shows another embodiment in which the arrangement position of the peeling roller 3 is changed. There, the T-shaped arm 1
8 is arranged upright on the right side of the feed wheel 2, and the lower end thereof is swingably supported by a shaft 20. Of the arms protruding left and right at the upper end of the arm 18, the peeling roller 3 and the cam follower 23 are rotatably supported on the left arm, and the guide roller 39 is rotatably supported on the right arm. Further, the peeling roller 3
The arm 18 is urged to swing by a spring 21 in such a direction as to move inward of the rotation locus of the delivery arm 12. Otherwise, the configuration was the same as in the above embodiment.

As described above, the delivery arm 12 and the measuring roller 3
The tape path between the feeding arm 12 and the guide roller 39 is detoured through the guide roller 39, and the peeling roller 3 is disposed between the feeding arm 12 and the guide roller 39. When performing the peeling operation of the reinforcing tape T, it is possible to prevent a large tension from acting on the reinforcing tape T between the delivery arm 12 and the measuring roller 4. That is, the tape peeling can be facilitated while reducing the tension of the reinforcing tape T, and the responsiveness of the measuring roller 4 can be further improved.

FIGS. 6A and 6B show the feed wheel 2.
5 shows a modification of the present invention with respect to FIG. FIG. 6A shows that the feed wheel 2 is formed of a cross-shaped star wheel, and a thread-shaped uneven surface is formed at the protruding end of each of the four arms.
And The number of the delivery arms 12 should be two or more, preferably three or more. In FIG. 6 (b), after performing knurling on the peripheral surface of the cylindrical roller, grooves 37 parallel to the roller central axis are formed at regular intervals in the circumferential direction.
The roller arm protruding portion sandwiched between the rollers was used as a delivery arm 12. However,
In this case, the peeling roller 3 is arranged outside the rotation locus of the feed wheel 2.

As understood from these embodiments, the surface of the delivery arm 12 to which the adhesive layer 13b contacts can be formed by a parallel groove or a knurled groove in the form of a lattice groove. The delivery arm 12 may be formed by a twist bar formed by twisting a rod having a polygonal cross section.

As the sensor 6, a photo sensor, a proximity switch or the like can be applied in addition to the limit switch.
Further, the rotational displacement of the arm 25 is detected by the sensor 6 such as a potentiometer or a differential transformer, so that the operation state of the motor 7 can be continuously controlled. As the motor 7, a stepping motor can be applied. Depending on the support position of the tape roll R, the first stage roller 14 can be omitted. The cam 22 can be independently driven to rotate. In this case, the cam profile can be freely changed to an oval shape or a circular shape.

[0030]

According to the tape feeder of the present invention, the reinforcing tape T can be sent out from the tape roll R to the measuring roller 4 while being pulled out from the tape roll R by the feed wheel 2 by overcoming the adhesive force of the tape itself. The operation of the motor 7 for driving the feed wheel 2 is controlled by operating the sensor 6 by using the tape, so that an appropriate amount of reinforcement from the tape roll R is provided in accordance with the amount of tape that has been used by the operator. The tape T can be pulled out and automatically fed. Therefore, the worker can concentrate on the work of attaching the reinforcing tape T to the sewing parts, and the work efficiency can be significantly improved. Since the motor 7 is intermittently driven to intermittently feed the reinforcing tape T, it is possible to prevent the surplus reinforcing tape T from staying on the worker side, and to feed the reinforcing tape T in an amount appropriate for the consumption. Can be paid. According to the feed wheel 2 in which the delivery arm 12 is formed by a screw shaft, the structure of the feed wheel 2 can be simplified and the manufacturing cost can be significantly reduced.

[Brief description of the drawings]

FIG. 1 is a schematic front view for explaining the present invention in principle.

FIG. 2 is an overall front view.

FIG. 3 is a cutaway front view of a main part.

FIG. 4 is a sectional view taken along line AA in FIG.

FIG. 5 is a main part front view showing another embodiment of the present invention.

FIG. 6 is a perspective view showing another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case 2 Feed wheel 3 Peeling roller 4 Measuring roller 5 Final roller 6 Sensor 7 Motor 12 Delivery arm 13a Base layer of reinforcing tape 13b Adhesive layer of reinforcing tape 14 First-stage roller 18 Arm 21 Spring 22 Cam 23 Cam follower 25 Arm 28 Spring 30 Control circuit R Tape roll T Reinforcement tape

Claims (5)

[Claims] 1. A tape feeder for pulling out a sewing reinforcing tape T provided with an adhesive layer 13b on at least one side thereof from a tape roll R and automatically feeding the tape, and is driven to rotate by a motor 7 fixed to the case 1, A feed wheel 2 for pulling out and operating the reinforcing tape T from the tape roll R; a feed wheel 2 supported reciprocally by the case 1 and urged to move the reinforcing tape T to a tensioning side;
Roller 4 for detecting the remaining state of the reinforcing tape T sent out from the sensor, a sensor 6 for detecting the displacement state of the measuring roller 4, and a control circuit 30 for controlling the operation state of the motor 7 according to the output signal of the sensor 6. The feed wheel 2 is provided with a plurality of delivery arms 12 for contacting the adhesive layer 13b and forcibly sending the reinforcing tape T. In the vicinity of the feed wheel 2, the delivery arms 12 are provided. A tape feeder provided with a peeling roller 3 for peeling off the attached reinforcing tape T. 2. An arm 25 supporting the measuring roller 4 is provided.
The microswitch (6) is supported by the case (1) so as to be swingable, is urged by a spring (28) toward a side where the reinforcing tape (T) is tensed, and is provided with a swing locus of the arm (25). Tape feeder. 3. An arm 1 swingably supported by a case 1.
8, the peel roller 3 and the cam follower 23 are pivotally supported, and the arm 18 is urged to swing by a spring 21 in a direction in which the peel roller 3 approaches the rotation trajectory of the delivery arm 12. Cam follower 23 against the urging force of arm 21
The tape feeder according to claim 1, wherein the cam that swings in a direction away from the feed wheel is provided so as to be rotatable along with the feed wheel. 4. A first-stage roller 14 for winding and guiding the reinforcing tape T around the feeding arm 12 is provided in a tape path on the upper side of the feed wheel 2, and a reinforcing tape is provided in a tape path on the lower side of the measuring roller 4. T
4. The tape feeder according to claim 1, further comprising a final-stage roller (5) for guiding the roller around the measuring roller (4). 5. The tape feeder according to claim 1, wherein the feed arm of the feed wheel is formed by a screw shaft.