JPS6193017A - Automatic winder for adhesive tape - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to the transportation of packaging materials and packaging materials (hereinafter both referred to as workpieces) in which the bodies and ends of circular tubes and round shafts are wrapped with films, etc. In order to prevent peeling or staining of the paint or printed parts or damage to the edges and body of the workpiece, each workpiece is wrapped in a film, and this film is tightly attached to the workpiece to prevent it from separating. This invention relates to an automatic tape winding device.

[Conventional technology]

In order to prevent the film from separating from the film-wrapped workpiece, tape was manually wrapped around it. Winding the tape is a simple task.

In order to perform mass production, artificial work cannot maintain a certain level of efficiency or maintain a sense of satisfaction, and the pre-processes,
This had become a bottleneck for post-processing.

[Problems that the invention attempts to solve]

Therefore, this film wrapping and tape wrapping work is performed in the previous process, and when the film is carried into this device and the wrapped film is wrapped with tape,
This automatic winding device automates the series of operations of clamping the film and workpiece to prevent them from shifting, wrapping them with tape, and transporting them to the next process. To achieve this, in order to automate the tasks of supplying tape, drawing out tape, gripping tape, clamping workpieces, taping, loading, aligning, and unloading, a combination of the above-mentioned units is used to automate various workpieces to be film-wrapped. The aim is to select the length of the tape to be taped according to the size of the tape, and to control this using sequence control for automation.

[Means for solving problems]

The overall configuration of the present invention is shown in FIG. 1. From the top, tape supply device 1. Tape pull-out device (including tape lower part gripping device) 2, tape upper gripping device (including tape cut-off device) 3, tape lower end pressing device 4, push-up device 5
, a taping device 6 , and a work clamp device 7 are mounted on a frame 8 .

Next, each unit will be explained.

The tape supply device (see FIGS. 2 and 3) has a plurality of shafts 21, 21' that can sect a plurality of tape windings to predetermined positions, and is supported by bearings mounted on a magazine frame 27. The tape windings on a predetermined set shaft (for example, shaft 21) are sequentially used, and after the use is finished, the magazine 23 is indexed so that the tape winding set on another shaft (for example, shaft 21') can be used. Therefore, the magazine 23 has a rotation mechanism, and the magazine frame 2
Cylinder 24 mounted on 7. The magazine is rotated and indexed by a rack 25 and a pinion 26 attached to the magazine rotating shaft. The indexing position is cylinder 24 on one side.
The stroke end and the other side are determined by a stopper 39 according to the tape draw-out position.

On the other hand, the other tape winding center shaft 21', which has been used up completely, can be removed from the magazine 23 and new tape windings can be supplied outside the machine even during automatic operation. When all the tape windings on the set shaft 21 are used up and the magazine 23 rotates, a lamp is lit to notify that tape replenishment is required, and an alarm can be issued to notify that tape replenishment is required. The remaining length of one roll of tape is determined by the length used for one taping of the film package of the workpiece and the length of one roll of tape, so enter the number of times on the counter on the operation panel. When the number of times the tape has been used matches that number, the counter is reset and the next tape roll is used.

For this purpose, a pitch feeding mechanism is provided to feed the magazine frame 27 by the interval between each tape winding. That is, fasteners 37 are attached to both sides of the magazine frame 27 and are locked to the chain 33. The chain 33 meshes with a sprocket 32 supported by a bearing identified on the frame 8, and is driven forward by the drive motor 31.

The pitch of each tape winding is determined by position detection using a dock 35 attached to the magazine frame 27 and a limit switch 34 attached to the frame 8, and an electromagnetic brake 36
Positioning is done by

Next, set the tape windings on the tape setting shaft 21, pull out the tape ends of all the tape windings, and sandwich them between the guide rollers 28, 29, 41, 42 (see Figure 4) shown in Fig. 2, and grip them with the tape lower end gripping device. Let the tape hang down for a specified length so that the nails can rise and pinch. The guide rollers 28, 29, 41, and 42 can be expanded to sandwich the tape when setting the tape. (Figure 4 is an enlarged view of the expansion mechanism.)
The tape drawing device (see FIG. 5) is for grasping the lower end of the tape hanging from the tape winding of the magazine 23 and drawing out a predetermined length necessary for adhering the tape to the workpiece. 23 guide roller 2
8, 29.

There is a tape pull-out device 2 for grasping the lower end of the tape hanging between the frames 41 and 42, and the tape pull-out device 2 is locked by a chain 56 using fasteners (not shown) provided at the top and bottom of both sides of the frame. It passes through the motor 54, engages with a sprocket that fits into the clutch brake unit 58, and moves up a sliding surface using linear bearings provided above and below.

It is now possible to descend. A tape lower gripping device 51 is mounted on the tape drawing device 2, and when drawing out the tape,
With the gripping claws 52 open, it rises integrally with the tape pull-out device 2 to the pull-out position. Further, when the tape pull-out device 2 rises and reaches the upper limit, the brake of the clutch brake unit 58 is activated by a signal from the position detection switch 57 attached to the frame 8 to maintain that position, and then the tape pull-out device Since the tape lower gripping device 51 is connected to the piston rod 512 of the fixed cylinder 59, the cylinder 59 is actuated to further raise the tape lower gripping device 51 to the stroke end of the cylinder. After rising, the tape is held by closing the gripping claws 52 in response to a detection signal from the limit switch 510 that detects the rising end. After gripping, the cylinder 59 is lowered to the lowering end, the brake unit 58 is released, the clutch is activated, the tape drawing device 2 is lowered to a predetermined position, and the tape is drawn out.

Adjustment of the length of the tape to be drawn out is determined by the lowering stop position of the tape drawing device 2 and varies depending on the outer circumferential length of each workpiece. Attach it to the drawer device 2.

Since they are arranged to accommodate workpieces of various sizes, a desired workpiece can be easily selected using the selection switch on the operation panel.

After pulling out a predetermined length of tape by the tape lower end gripping claw 52, the tape gripping claw 62 of the upper tape gripping device 3 is moved to the cylinder 63 by the operation of the cylinder 63, as shown in FIG.
The tape is gripped by a rack 61 mounted on the rack 61 and a gripping claw 62 attached to a pinion shaft that meshes with the rack 61, and cut off by a cutter 65 at the upper part of the gripping claw 62. The cutter has a cylinder 64 fixed to the tape upper gripping device 3 and attached to its piston rod. The length of the tape remaining in the tape supply device 1 is such that the tape winding is completed and the tape pull-out device 2 can pull out the tape for the next tape winding as described above. Now, while the cut-off tape is held at the upper end by the gripping claw 62 and the lower end by the lower gripping claw 52, the tape drawing device 2 is further lowered by the drive motor 54 and the tape is positioned at the work taping position.

At this time, the upper end of the tape has already been cut off by the descent of the tape pull-out device 2 and is gripped by the gripping claws 62 of the tape upper grip device 3. A sliding surface 69 with linear bearings is provided on both sides of the tape upper gripping device 2 and is also provided with sliding surfaces (not shown) with linear bearings in the lateral direction, and laterally connected to the drive motor. 67 is positioned at the taping position via the chain and sprocket, and in the vertical direction, the tape upper gripping device 3 is freely lowered by the tape tension as described above, but the tape upper gripping device 3 falls down the sliding surface 69 due to its own weight. In order to prevent this, a counterweight 68 is suspended by a chain on both sides of the tape upper gripping device 3 to adjust the balance force, so that the tension applied to the tape is reduced by the inertia force at the time of starting and stopping or by the inertia force during steady operation. There is only frictional resistance when sliding. After the tape positioning is completed, a tape lower end valve device 4 is attached to the upper frame 8 at the taping position of the tape lower gripping device, and this lower end valve device 4 moves the tape lower end valve on the sliding surface provided on the frame 8. The device 4 is slid laterally by a chain hooked to the fasteners at both ends, a brake unit 74 fitted with a sprocket that engages with the chain, and a drive motor 73, and the upper and lower tape gripping devices are At the same time when the tape is positioned at the taping position, the rack 76 fixed to the cylinder rod of the cylinder 75 of the tape lower end valve device 4 and the pinion 77 that mesh with the rack 76 are operated to sandwich the lower end of the tape between the two rollers 71 and hold the tape lower gripping claw. Open 52.

When the workpiece is sent to the taping position, the workpiece is clamped by the workpiece clamping device shown in FIGS. 8 and 9. While holding the upper end of the tape cut on to a predetermined length by the gripping claw of the chi 110 and the lower end of the tape by the roller 71 of the tape lower end valve device 4, as described above, the tape lower end valve device 4 is operated by the drive motor. 73, only the tape lower end valve device 4 is moved laterally. Further, the tape lower end valve device 4 is connected to a chain by fasteners 79 attached to both sides of the tape lower end valve device 4 on a sliding surface 78 provided on the frame 8, and driven by a drive motor 73. It can be moved and stopped at will in the left/right direction via the clutch/brake unit. When the tape is gripped by the roller 71 and the upper gripping claw 62 of the tape lower end valve device 4 or moved from side to side, a part of the tape adheres to the workpiece, and its adhesive force causes the tape to move away from the roller 71 as the winding progresses. Get out more. The tape is adhered to the side surface of the workpiece, and the taping unit starts wrapping the tape from that position.

The taping device 6 shown in FIG. 10 is mounted on a frame 8, and a slider 109 slidably mounted on the taping device frame 1010 is moved forward by actuating the cylinder 106, and is supported by a bearing mounted on the slider 109. An actuator 102 is attached to the tip of a rotatable pivot shaft 112, and the actuator 102 has a protruding rotor shaft that can be rotated, and a pressing roller 101 is attached to this.The actuator 102 moves the pressing roller 101 to a position directly above the tape. 102 to operate the pressing roller 101
After pressing the tape onto the work, the rotating shaft 112 is rotated along the outer periphery of the work and the tape starts to be wound from the bottom of the work. The actuator 102 works even if the center of the workpiece's rotation axis is misaligned or the outer diameter of the workpiece is different.
Part 2 plays an important role in pressing the tape against the workpiece with a constant force. The tape starts wrapping from the bottom of the workpiece and rotates until the tape held by the roller at the bottom end wraps around the workpiece. When the bottom tape has finished wrapping completely, the tape upper gripping device moves laterally and picks up the tape at the top. Move to the winding position and rotate the motor 104 in the opposite direction to wind the tape, and when the tape wound from the bottom and the tape wound upward overlap the tape wound from the bottom. Tape upper gripping device 3
The gripping claw 62 is released, and the pressing roller 101 continues to rotate, wrapping all the remaining tape and completing the taping. The rotation angle of the taping unit is controlled by limit switches 107 and 108.

As described above, the push-up device 5 lowers the tape upper gripping device 3 due to the tape tension after taping, but since it is balanced by a counterweight, it cannot return to its original position. After attaching a cylinder to the frame 8 and attaching a push-up cap to the tip of the cylinder lower throat and completing taping, the tape upper gripping device 3 is pushed up and returned to its original position. Next, when the film is placed over the workpiece, the film is loose, and in order to wrap the adhesive tape, the film and workpiece must be clamped to prevent them from shifting.

The upper and lower ends of the tape are held by respective gripping devices, the gripping devices are moved laterally to adhere the middle part of the tape to the film, and the packaging film is first wrapped around the outer circumference of the work by the taping device 6 from the bottom side of the tape. The film moves because the gap between it and the workpiece is loose, so it is necessary to clamp the film and the workpiece. The work clamping device 7 is placed in the eighth position. As shown in FIG. 9, the workpiece clamping device 7 is composed of a vertical movement mechanism and a clamping mechanism. The work clamping device 7 is composed of a clamp claw 88, a flat band 89, and a clamp claw cylinder 810, and the movement of the clamp claw drive cylinder is transmitted to a rack 811 and a pinion gear 812 to rotate the clamp claw. A band 89 adapted to various outer diameters of the workpiece is attached to the clamp claw 88, and the workpiece is clamped by this band.

Figure 9 shows the vertical movement mechanism.The vertical movement mechanism is used to move the clamp mechanism up and down when the work is moving horizontally in order to prevent the work from interfering with the clamp mechanism when moving horizontally when transporting the work. 91 is a cylinder for vertical movement and linear motion, with guide surfaces on both sides having linear bearings 94 on the top and bottom, and a work clamp mechanism arranged on both sides.
The frame is clamped by the movement of clamp cylinders 92 and 95, which are moved up and down by the racks 97 and 97 on both sides. The pinion gear 96 serves to move the left and right clamp mechanisms up and down during up-and-down movement, thereby preventing displacement in the up-down position.

[Function and Examples]

FIG. 11 shows the order of each operation of the present invention.

First, it is assumed that the workpiece is wrapped in film and clamped at the taping position, and the tape winding is set in the magazine.

Fig. 11A: The magazine 23 of the tape supply device 1 is indexed and in the tape draw-out position, there is tape winding in the magazine, Fig. 11 opening: tape draw-out device rises, Fig. 11-;
Tape lower gripping device raises tape lower end clamp, Figure 11 2; Tape lower gripping device lowers, Figure 11 E; Tape puller lowers to determine tape length, tape upper gripping device grips the tape and cuts off the tape. , to Fig. 11; positioning of the tape pull-out device and upper tape gripping device; Fig. 11 G; gripping the lower end of the tape with the tape lower end pressing device; Fig. 11 H; horizontal positioning of the tape in contact with the workpiece with the tape lower end pressing device; Movement, Figure 11: The taping device moves forward and wraps the tape from below the lower end.
Figure 11: Release the upper gripper of the tape to finish winding the tape.

Complete tape winding. Each device is returned to its original position.

〔Effect of the invention〕

Even during operation, the next tape roll can be easily supplied to the set shaft outside the machine, so operation can be continued without stopping the machine.

When changing work to a different type of work, there is a selection switch on the operation panel that corresponds to the type of work, so by selecting this switch, you can easily switch to a different type of work. There is.

When the tape is moved to the taping position, a counterweight is attached to prevent the tape from sagging, so that an appropriate tape tension can be applied.

When wrapping tape around a workpiece using the presser roller of the taping device, an actuator is used to constantly press the presser roller against the workpiece with a constant pressure, which can cause the workpiece to be misaligned with the taping device.

Even if the size of the workpiece changes, the tape can be wrapped while applying constant pressure between the workpiece and the film, so uneven winding will not occur. In addition, the winding method starts from the lower side of the workpiece and immediately reverses rotation after the lower side is completed, so there are individual advantages such as no wasted winding time. The effect of automating the taping work that was not previously available is significant.

[Brief explanation of the drawing]

FIG. 1 shows an overall layout of each device of the present invention. Tape supply device 1. Tape drawing device 2, tape upper gripping device 3. Tape lower end pressing device 4, pushing up device 5, taping device 6. Work clamp device 7, frame 8° Figure 2 is a front view and a side view of the tape pull-out device. FIG. 3 also shows a front view. Set shaft 21.21', magazine 23. cylinder 24,
Rack 25, pinion 26, magazine frame 27, guide rollers 28, 29, drive motor 31, sprocket 32, chain 33. Limit switch 34. Dock 3
5. Electromagnetic brake 36° Figure 4 is an enlarged view of the expansion mechanism for pulling out the tape at the bottom of the magazine. Guide rollers 41, 42. FIG. 5 is a front view and a side view of the tape pull-out device and tape lower gripping device. Tape lower gripping device 51, lower gripping claw 52, drive motor 54. Sprocket 55% Cheno 56° Clutch brake unit 58, position detection limit 57, cylinder 59
, up/down detection switch 510°, piston rod 512, dock 511°. FIG. 6 shows a plan view of the tape upper gripping device. Upper gripping claw 621. Cylinder 63, counterweight 68, cutter cylinder 64, drive motor 6
7. Sliding surface 69, cutter 65°. Figure 7 shows a plan view of the tape lower end pressing device, which includes a roller 71% drive motor 73, a clutch brake unit 74, a cylinder for rotating the roller shaft 75°, a rack 76, a pinion 77, Left-right sliding surface 78, fastener 79° FIG. 8 shows a front view of the clamping mechanism of the workpiece clamping device. Clamp claw 88. Flat bunt 891 Clamp claw cylinder 810. Rack 811, pinion 812° FIG. 9 shows a plan view of the vertical mechanism of the work clamp device. Direct-acting cylinder 91 for vertical movement. clamp cylinder 92,
Linear bearing 94, pinion gear 96, rack 97
゜Figure 1O shows a front view of the taping device. Pressing row 2101, actuator 102. cylinder 1
06, drive motor 1o4. Swivel shaft 112, clutch brake unit 105. Taping device frame 1010
．． Limit switch 1o7゜108, slider 1
09゜Figure 11 shows the operating order of each device. Patent applicant Ikegai Iron Works Co., Ltd. Time-1 1, A1 Tatsu Hikiyama I Row 2 Figure-3 Figure-4 Figure-8 Figure-8 Time-? Row 10 Figure-11

Claims (1)

[Claims] Self-winding adhesive tape that wraps the body and end of a circular tube or shaft with a film, etc., and brings the packaging material and the packaged material (hereinafter referred to as the work) into close contact by wrapping the adhesive tape at least once or more. A plurality of tape rolls are stored and arranged in a magazine equipped with a plurality of shafts to which a plurality of tape rolls can be attached in an attached device, and after one tape is used up, it is automatically switched to an adjacent tape roll.
It has a tape feeding device 1 which can automatically switch to another shaft after all the tape rolls on one shaft are used up, and a tape lower end gripping device to draw out the required length according to the diameter of the workpiece. A tape pull-out device 2 capable of positioning the gripping device at a position determined from the workpiece diameter and tape length with respect to the center of the workpiece, and a cutoff device for cutting the tape to a required length, the upper end of the cut tape. The tape is cut off from the tape upper gripping device 3 which grips the vicinity of the tape and supports the gripping portion thereof so as to be movable in the horizontal and vertical directions via the tape, and is gripped between the gripping device and the tape lower end gripping device 51. The tape is sandwiched between two rotating rollers mounted on a slide that is positioned relative to the work and can be moved laterally between the work and the tape lower end gripping device of the tape pull-out device 2, and the slide moves laterally. The tape is pulled out from the two rollers by moving the tape lower end holding device and the tape upper gripping device laterally in the direction of the workpiece, pressing the tape onto the tape and rotating it around the outer circumference of the workpiece while pressing the roller, thereby applying the film to the workpiece. A taping device that can be moved in the axial direction and a taping device that clamps the workpiece in order to prevent the workpiece and film from shifting when wrapping the tape so that they can be brought into close contact with each other and can be clamped even if they have different diameters. It consists of a flexible work clamp device and a push-up device that lowers the tape upper gripping device 3 through the tape when positioning the tape, but pushes the tape upper gripping device 3 back to its original position after tape winding is completed. An automatic adhesive tape wrapping device featuring: