JPH0156188B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for applying sealing tape to joints of materials such as synthetic fiber sheets and synthetic resin sheets.

[Conventional technology]

We manufacture raincoats such as raincoats, ski wear, windbreakers, cold weather gear, etc. using the above materials.
Sealing tape may be attached to the joints of the material to strengthen the joints and prevent rainwater from seeping in.

Conventionally, such sealing tape application work has been performed according to the following procedure.

That is, as shown in FIG. 7, the end portion _T1 of the filler tape T is held in hand between the press roller 100 on which the material M is arranged and the back-up roller 200, and is fed while being pulled forward. 10
0 is lowered to overlap and press the sealing tape T onto the material M, and then the sealing tape T is pasted onto the material M over a predetermined length by rotating the pressing roller 100 or the back-up roller 200. After that, the pressure roller 100 is pulled up to open a gap with the back-up roller 200, and the eighth
As shown in the figure, pull out the material M to which the sealing tape T is attached to the front side, and place the sealing tape T near the pasted end (for example, the area indicated by the dashed line X) and the tip of the sealing tape T. T ₁ (Figure 7) was cut off using scissors.

[Problem that the invention seeks to solve]

If the conventional procedure explained above is followed, there is a problem in that the leading end _T1 of the sealing tape T pulled out ahead of the sandwiched part A between the pressure roller 100 and the back-up roller 200 at the start of the pasting work is lost. In addition, there was a problem in that the tip _T1 of the sealing tape T had to be cut off with scissors after the pasting work was completed, which was an extra work and troublesome.

This invention has been made in view of the above-mentioned problems, and provides a sealing tape pasting device that can stick a sealing tape to a material without loss and that can easily automate the sealing tape pasting work. The purpose is to

[Means for solving problems]

In order to achieve the above object, the sealing tape applying device of the present invention includes a pressure roller that rotates while pressing the sealing tape onto a material, a back-up roller corresponding to the pressure roller, and a back-up roller that connects the pressure roller to the back-up roller. a push/pull mechanism that moves the sealing tape closer to or away from it; a feeding mechanism that feeds the sealing tape to a position where the tip of the sealing tape hangs in front of the pressing roller; and a feeding mechanism that feeds the sealing tape to a position where the tip of the sealing tape hangs in front of the pressing roller; an air jet nozzle that blows airflow to the tip of the airflow and wraps the tip around the pressure roller; and a sealing tape that is separated between the feeding mechanism and the pressure roller while the pressure roller is rotating; a cutting mechanism;
It is equipped with

[Effect]

According to the sealing tape application device configured in this way, when the pushing roller is moved away from the back-up roller by the push-pull mechanism and the feeding mechanism is operated,
The tip of the filler tape hangs down in front of the pressure roller. Then, when the airflow is blown out from the airflow jetting nozzle, the tip of the sealing tape hanging down in front of the pressure roller is pushed by the airflow and wrapped around the pressure roller. Next, when the pressure roller is brought close to the back-up roller by the push-pull mechanism, the tip of the sealing tape wrapped around the pressure roller is overlapped and pressed onto the material being fed onto the back-up roller. It will be done. Therefore, when the pressure roller rotates, the filler tape, including its tip, is stuck to the material without loss. Also, when the pressure roller is rotating, the sealing tape is separated between the feeding mechanism and the pressure roller by the cutting mechanism, and the unattached portion of the sealing tape is removed by the subsequent rotation of the pressure roller. Attached to the material.

〔Example〕

FIG. 1 is a schematic side view showing the overall configuration of a sealing tape applying device 1 in which a tape feeding mechanism 2 is assembled. The main body 3 of the sealing tape application device 1 includes a pressing roller 4, a feeding mechanism 5 that feeds the sealing tape (hereinafter referred to as tape) T, a cutting mechanism 6 that cuts off the tape T, and an air jet nozzle. 7, hot air jet nozzle 8, and tape guide mechanism 9
A back-up roller 11 is provided on the underframe 10 of the tape applicator 1.

The pressure roller 4, the feeding mechanism 5, the cutting mechanism 6, and the air jet nozzle 7 are attached to a common mounting member not shown in FIG. be raised and lowered within the When the mounting member is lowered, the pressure roller 4 is pushed back against the back roller 1.
1 and come into elastic contact with each other, and when the mounting member rises, the pressing roller 4 moves away from the back-up roller 11. Therefore, the air cylinder 12 is an example of the push/pull mechanism of the present invention. The feeding mechanism 5 includes a drive roller 13, a driven roller 14 corresponding to the drive roller 13, and a tape peeling roller 15. The driven roller 14 is moved closer to or farther away from the drive roller 13 by a mechanism not shown. This feeding mechanism 5 is provided above the pressing roller 4. The cutting mechanism 6 is provided between the feeding mechanism 5 and the pressing roller 4 at a location close to the feeding mechanism 5. The hot air jet nozzle 8 has an operating position where it can blow hot air onto the tape T in front of the pressure roller 4 and the backup roller 11 when the tape T is sandwiched between the rollers 4 and 11. It is designed so that it can be moved between it and a standby position on its side. The tape guide mechanism 9 includes a pair of clamping pressure rollers 16 and 17 that are freely rotatable.

At the top of the mounting panel 20 of the tape feeding mechanism 2, there is a reel 2 that holds the rolled tape T.
1 is attached, and the tape T fed out from this reel 21 passes through a guide roller 22, a guide pin 23, a turning roller 24, a feeding mechanism 25, a guide roller 26, and a turning roller 27 in this order, and then reaches the tape guide mechanism. Leads to 9. Like the feeding mechanism 5 of the main body 3 described above, the feeding mechanism 25 includes a driving roller 28, a driven roller 29, and a peeling roller 30.
and has. Further, the tape T is slack between the feeding mechanism 25 and the guide roller 26, and an idle roller 32 provided at the free end of the swing arm 31 is supported in the slack portion. 33 is a shaft constituting a swing fulcrum of the swing arm 31, and 34 is a weight.

Next, an example of a series of automated tape pasting processes will be described with reference to Nos. 2a to 2f. Note that the tape T is a hot melt type tape.

In FIG. 2a, the mounting member 35 to which the pressure roller 4, feed mechanism 5, cutting mechanism 6, and air jet nozzle 7 are attached is raised, the pressure roller 4 is moved away from the back-up roller 11, and the cutting device 6 is in an inactive state. , and the driven roller 14 of the feeding mechanism 5 approaches the drive roller 13 to sandwich the tape T. From this state, drive roller 1
3, the driven roller 14 also rotates and the tape T is sent out downward. Such tape feeding by the feeding mechanism 5 is performed until the leading end T ₁ of the tape T reaches a position where it hangs down in front of the pressing roller 4 . After stopping the rotation of the drive roller 13 and stopping the tape feeding by the feeding mechanism 5, the material M is fed between the back up roller 11 and the pressing roller 4 as shown in FIG. 2b.
Subsequently, the airflow momentarily blown out from the airflow jetting nozzle 7 is blown onto the tip _T1 of the tape T. In this way, the leading end T ₁ of the tape T is pushed by the airflow and wound around the pressure roller 4 . The pressure roller 4 is brought close to the back-up roller 11 by lowering the mounting member 35 at the same time as or immediately after blowing out the airflow from the airflow injection nozzle 7. As a result, the leading end T ₁ of the tape T wound around the pressing roller 4 is pressed onto the material M. Further, just before the tip end _T1 of the tape T is pressed onto the material M, the hot air jet nozzle 8 is set to the above operating position. The hot air injection nozzle 8 always blows out hot air regardless of whether it is set in the operating position or in the standby position. Therefore, when the hot air jet nozzle 8 is set at the operating position, the tip of the tape T
Hot air is blown onto T ₁ to heat its tip T ₁ to a melting temperature. Therefore, the tip of the tape T ₁
is immediately attached to the material M when it is pressed onto the material M.

Thereafter, as shown in FIG. 2c, the driven roller 14 of the feeding mechanism 5 is moved away from the drive roller 13 and the clamping state of the tape T is released.
Or the backup roller 11 rotates. As a result, the tape T is affixed to the material M and sent out backward together with the material M. Of course, during this time, the tape T is being heated by the hot air blown out from the hot air injection nozzle 8. In this way, the tape T is pasted, and just before the tape T is pasted to a desired length, the cutting mechanism 6 is activated to cut off the tape T, as shown in FIG. 2d. Then, the separated tape T is sent backward together with the material M by the continuously rotating press roller 4 and back-up roller 11, and as shown in Fig. 2e, the entire length of the tape T is transferred to the material M without any loss.
will be affixed to. After the entire length of tape T is pasted,
The hot air injection nozzle 8 is moved to the standby position, and the second
As shown in Fig. e, the driven roller 15 approaches the driving roller 13 and pinches the leading end _T1 of the tape T hanging down from above. After that, the rotation of the pressure roller 4 and the backup roller 11 is stopped, and the second
As shown in Figure f, the cutting device 6 becomes inactive. Then, as shown in FIG. 2a, the mounting member 35 is raised to move the pressure roller 4 away from the back-up roller 11, and the feeding mechanism 5 moves the tip end T ₁ of the tape T.
is fed out until it reaches a position where it hangs down in front of the pressure roller 4, and is ready for the next pasting operation.

In addition to the case where a hot-melt type tape T is used as in the embodiment described above, when a tape coated with adhesive or a tape with adhesiveness is used, the adhesive surface of the tape T against the material M is used. There is a concern that the tape T may stick to each roller such as a guide roller that guides the tape T, and the tape T may not be smoothly fed between the pressure roller 4 and the back-up roller 11. Therefore, in the embodiment described above, the feeding mechanism 25 of the tape feeding mechanism 2 and the feeding mechanism 5 of the main body 3 are devised. next,
The feeding mechanism 5 of the main body 3 will be specifically explained with reference to FIGS. 3 to 5.

In Fig. 3, reference numeral 40 denotes a mounting bracket to be attached to the mounting member 35 shown in Figs. 44 is swingably supported. The above-mentioned driven roller 14 is rotatably supported at the free end of the support frame 44 via a rotating shaft 45.
Further, the driven roller 14 is provided with grooves 46 at a plurality of locations (two locations in the illustrated example) in the axial direction. For this driven roller 14, the peeling roller 1
5 and 15 are supported by the free end of the support frame 44 via a rotation shaft 47 parallel to the rotation shaft 45. The outer peripheries of the peeling rollers 15, 15 are fitted into the grooves 46, 46, respectively, and overlapped with the outer periphery of the driven roller 14 with a gap in the axial direction. Furthermore, the rotation shaft 45 of the driven roller 14 is the rotation shaft 47 of the peeling roller 15.
These rotating shafts 4 are set to have a larger diameter than the
An endless belt 48 is wound between the belts 5 and 47.

FIG. 4 shows a state in which the flange 41 of the mounting bracket 40 is attached to the mounting member 35 using mounting bolts 49. As is clear from the figure, in this mounting state, when the support frame 44 is swung toward the mounting member 35 side, the driven roller 14 approaches the drive roller 13, and the support frame 44 moves toward the mounting member 35.
When the driven roller 14 is swung away from the drive roller 13, the driven roller 14 moves away from the drive roller 13. Note that virtual lines A and B in the figure indicate the center of the support frame 44 when the support frame 44 approaches or moves away from the mounting member 35, respectively.

As shown in FIG. 5, when the drive roller 13 rotates with the tape T sandwiched between the drive roller 13 and the driven roller 14, the tape T is sent downward by the rotation of the drive roller 13. Accordingly, the driven roller 14 rotates in synchronization with the feeding speed of the tape T, and the rotation is transmitted to the peeling roller 15 by the endless belt 48. Here, since the rotating shaft 45 of the driven roller 14 has a larger diameter than the rotating shaft 47 of the peeling roller 15, the peeling roller 15
rotates faster than. For this reason, the drive roller 13
The tape T, which is pressed by the tape T and tends to stick to the driven roller 14, is strongly pulled downward by the peeling roller 15 and is prevented from sticking. Further, since the peripheral speed of the peeling roller 15 is faster than the feeding speed of the tape T, the peeling roller 15 rotates while slipping on the adhesive surface of the tape T without sticking to it. Therefore, the tape T is smoothly hung downward without sticking to the driven roller 14. Such tape peeling action can be achieved by reducing the width of the peeling roller 15 to make it difficult for the tape T to stick to the peeling roller 15, as shown in FIG. By forming the protrusion 49, the tape T is made less likely to stick to the driven roller 14, thereby making it more effective.

The driven roller 29 and peeling roller 30 of the feeding mechanism 25 in the tape feeding mechanism 2 are also connected to the feeding mechanism 5.
The structure is similar to that of the driven roller 14 and peeling mechanism 15 in .

Next, when applying tape to a material, if the tape is applied to the material in a stretched state, wrinkles will occur in the material after the tape is applied, reducing its commercial value or causing it to lose its shape. Therefore, in a sealing tape application device, it is desirable that the tension of the tape is always properly adjusted. In addition, when using a hot melt type tape or a tape coated with adhesive, the tapes may stick to each other at the end of the tape T fed out from the reel 21. It is desirable that the tape be fed out smoothly even if this occurs. Therefore, in this embodiment, a tension adjustment device that satisfies this requirement is provided in the tension payout mechanism 2.
It is equipped with. The tension adjustment device will be explained below.

This tension adjustment device detects the position of the idle roller 32 provided at the free end of the swing arm 31 from the rotation angle of the shaft 33 of the swing arm 31, and based on the detection signal, the drive roller 28
means for controlling the rotational speed of the motor. The position of the idle roller 32 can be easily detected from the rotation angle of the shaft 33 by using the magnetic sensor 51, for example. In order to control the rotation speed of the drive roller 28 based on the detection signal, for example, as shown in FIG. 6, the position signal obtained by the magnetic sensor 51 is input to a processing circuit, and the processing circuit sets the The signal obtained by comparison with the value is input to a control circuit, and the motor drive circuit is controlled based on the output signal of this control circuit, thereby controlling the rotation speed of the drive motor 50 of the drive roller 28 shown in FIG. Just do it.

A specific control method will be explained. For example, when the feeding speed of the tape T on the main body 3 side increases and the slack width of the tape T decreases accordingly, the idle roller 32 is lifted up accordingly, and the swinging arm 31 moves as shown by the imaginary line C in FIG. The tension on the main body 3 side is maintained constant by swinging. Then, as the shaft 33 rotates as the swing arm 31 swings, the magnetic sensor 51 detects that the idle roller 32 is raised too high, and the rotation speed of the drive motor 50 is increased based on the detection signal. Ru. Therefore, the slack width is corrected so that the idle roller 32 is in a normal position. Even if the idle roller 32 falls too far down as shown by the imaginary line D in FIG. 1, the slack width is similarly corrected so that its position becomes normal. By controlling the number of rotations of the drive roller 28 in this way to correct the slack width, the tape T is always fed out smoothly.

Further, the mounting position of the weight 34 can be moved along the long hole 51 formed in the swing arm 31. For example, when the weight 34 is brought closer to the shaft 33, the weight of the idle roller 32 acting on the tape T becomes heavier. Therefore, the tension of the tape T increases accordingly. It goes without saying that the tape application device of the present invention can also be used to apply tapes other than hot melt type, and in that case there is no need to use the hot air jet nozzle 8.

〔Effect of the invention〕

As explained above, according to the sealing tape application device of the present invention, after the tip of the sealing tape wound around the pressure roller by the airflow is stuck to the material on the back-up roller, the pressure roller Since it is possible to advance the pasting process by rotating the sealing tape, there is no need to waste the tip of the filler tape as in the past, and at the same time, it eliminates the troublesome extra work of cutting off the tip with scissors. This has the advantage of eliminating the need to do so. In addition, there is a process of moving the pressure roller away from the back-up roller using a push-pull mechanism, a process of hanging the sealing tape in front of the pressure roller using a feeding mechanism, and a process of pressing the tip of the sealing tape with the airflow blown out from the air jet nozzle. The process of wrapping the sealing tape around the roller, the process of bringing the pressure roller with the end of the sealing tape wrapped around it using a push-pull mechanism close to the back-up roller, and the process of cutting the sealing tape while the pressure roller is rotating can all be automated. Moreover, since it can be executed as a series of continuous steps at a predetermined timing, complete automation of the sealing tape application work can be easily achieved.

[Brief explanation of drawings]

FIG. 1 is a schematic side view showing the overall configuration of a sealing tape application device according to an embodiment of the present invention in which a tape feeding mechanism is assembled, FIGS. 2a to 2f are illustrations of the use state of the device, and FIG. FIG. 4 is a front view of the feeding mechanism, FIG. 4 is a side view of the pressing roller, feeding mechanism, and cutting mechanism attached to the mounting member, FIG. 5 is an explanatory diagram of the operation of the feeding mechanism, and FIG. 6 is a control of the tension adjustment mechanism. The block diagram of the section, FIGS. 7 and 8 are explanatory views of the conventional example. DESCRIPTION OF SYMBOLS 1... Sealing tape pasting device, 4... Pressing roller, 5... Feeding mechanism, 6... Cutting mechanism, 7... Air jet nozzle, 11... Backup roller, 1
2...Air cylinder, T...Tape, _T1 ...Tip of sealing tape, M...Material.

Claims (1)

[Scope of Claims] 1. A pressure roller that rotates while pressing the sealing tape against the material, a back-up roller corresponding to the pressure roller, and a push-pull mechanism that moves the pressure roller closer to or away from the back-up roller; A feeding mechanism that feeds the sealing tape to a position where the tip of the sealing tape hangs down in front of the pressing roller, and a feeding mechanism that blows an air current to the tip of the closing tape that hangs down in front of the pressing roller. an air jet nozzle that wraps the sealing tape around the pressure roller; and a cutting mechanism that cuts off the sealing tape between the feeding mechanism and the pressure roller when the pressure roller is rotating. Pasting device.