JPS6028653B2 - Automatic joining equipment for raw materials such as foamed resin sheets - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a joining device for original fabrics such as foamed resin sheets, which joins (hands over) old and new fabrics in order to continue the continuous use of original fabrics.
can be done easily and reliably.

Conventionally, when raw materials such as thermoplastic resin sheets and films are sent to processing processes, etc., when the raw material used is finished, the end is joined to the starting end of the newly wound roll. However, most of this work was done manually.

In particular, in cases where the amount of unwinding per film is large, such as with thermoplastic resin films, the above-mentioned handover work is performed at considerable time intervals, so there is no noticeable loss of efficiency or inconvenience; When the amount of unwinding is small and handover work is required at short intervals, such as several tens of minutes, relying on manual work is extremely troublesome, extremely inefficient, and goes against labor-saving measures. Therefore, in this invention, we have intensively researched and undeveloped a material movement joining device that is especially convenient for use with foamed resin sheets, etc., which have a very small amount of winding. A raw fabric supply unit for next use is provided near the feed unit for feeding the raw fabric for next use, and the original fabric is kept along the original fabric until the end of use of the original fabric at the used fabric supply unit. A detection unit is installed that detects when the electromagnetic part contacts the raw fabric core tube made of magnetic material and is energized. A temporary part is provided that can hold the starting end of the raw fabric in a pinch bag, and a cutting part that rises in response to a communication from the detection part below the raw fabric while it is being used and cuts the end of the source fabric at an appropriate location, and the cutting part and a joining part that rises at the same time as the cutting part and overlaps the cut end part and the starting end of the raw fabric to be used next time and heat-seals them.

Next, embodiments of the present invention will be illustrated below with reference to the drawings. Reference numeral 1 indicates the machine body in the machine for joining the raw materials such as foamed resin sheets, and 2 indicates the source material supply unit, which is placed on a rack that can freely rotate so that the rolled raw material A is placed on a rack and the raw material is fed out by traction force. It is maintained and established.

In particular, the core tube a of the winding is made of iron or other magnetic material. Reference numeral 3 denotes an electromagnetic part, which is placed along the original fabric in the original fabric supplying part 2, and is energized by contacting the core tube a made of a magnetic material at the end of the original fabric A, to supply the original fabric to the original fabric supplying part. It is possible to detect the end of the original fabric at step 2, and constitutes a detection unit together with the core tube a made of a magnetic material.

Of this detection unit, it is preferable that the electromagnetic section 3 is pressed directly or indirectly toward the center (core tube) of the web A by an extrusion member. This pressing member can be implemented by using a spring member for the holding member 31 of the electromagnetic part 3 itself (see Fig. 1), or by pressing a part of the holding member 31 against the holding member 31 with a spring 4 (see Fig. 3). Pivotal support 32 of member 31
It is also possible to apply pressure using a spring 4' (see FIG. 4). In addition, instead of a spring, a cylinder mechanism 5 that can press the electromagnetic part 3 depending on the material used can be used (see Fig. 5).
It is also possible to suspend the electromagnetic part 3 at a position where there is no problem in supplying the raw material and allow it to fall under its own weight and be pressed in the direction of the core tube (not shown). Reference numerals 33 and 34 indicate auxiliary rollers provided on the side of the electromagnetic section 3 to facilitate alignment with the original fabric A.

Next, 6 is a cutting part, and 7 is a joining part, for example, the cutting part 6 is made of a heated nichrome wire cutter, the joining part 7 is made of a heat-sealable heating plate, and the height of the nichrome wire cutter is The nichrome wire cutter is located above the upper end of the heating slope, adjacent to a cylinder mechanism and other mechanisms 8 that can be raised and lowered so that both can rise to a predetermined position at the same time, and the nichrome wire cutter is raised by a stopper 9 after cutting. It is configured such that only the heating plate is allowed to rise beyond this point to facilitate joining, which will be described later.

Further, the nichrome wire cutter serving as the cutting part 6 is equipped with a length longer than the width of the original fabric, and although not shown, one end is fixed, and the end is kept under constant tension with a spring via a roller. In addition, 2' is a raw fabric supply unit to be used next time, and 10 is a raw fabric starting end A'' from the raw fabric supply unit 2' to be used next time is placed at a position suitable for joining during the traveling process of the raw fabric A to be used. In the temporary section,
A starting edge A'' for the next use is temporarily installed above the original fabric A to be used so that it does not come in contact with the original fabric A. When shown in the diagram,
The projection part 11 for insertion is combined with the support roll 12 for insertion which can be rotated at appropriate timing from the projection part layer to a non-temporary position by about 900 well-known turning means, and the projection part 11 and the support roll Raw fabric A' for next use between rolls 12
The starting end A'' of is held in a pinched manner.

Further, this temporary section 10 may be configured to have a mechanism capable of vacuum suction against the original fabric, and the suction and release can be operated by communication based on detection by the electromagnetic section 3. In the figure, 51 is a lifting prevention roller, 52 is a guide roller, and 53 is a feed section that connects the next use fabric supply section 2' to the fabric supply section 2 equipped with a detection unit.

When carrying out the present invention using the above-mentioned apparatus, during the traveling process of the original fabric A fed from the original fabric supply section 2, the temporary part 101 above the original fabric A to be used is moved to the original fabric to be used next time. The raw fabric starting end A'' from the supply section 2' is temporarily set so as not to come into contact with the used raw fabric A, and preparations are made so that the temporary state can be released as necessary after detection (see FIG. 6).

Then, when the raw fabric is finished in the raw fabric supply section 2 in use, the electromagnetic section 3 that has been along the raw fabric A until now is connected to the raw fabric core tube a made of a magnetic material.
After being detected by the energization caused by contact with the electromagnetic section 3, the cutting section 6 and the joining section 7 are raised at appropriate timing in response to the communication from the electromagnetic section 3. Cut the appropriate points (see Figure 7), then join the joint 7.
The cut end is overlapped with the starting edge A'' to be used next time and joined by heat fusion (see Fig. 8), and the temporary state of the starting edge AI' is released and a new fabric supply section 2 is installed.
It is only necessary to start supplying the raw material from ''.

Then, the new fabric supply unit 2' may be transferred to the detection side fabric supply unit 2 via the feeding unit 53 at an appropriate time until the source fabric A' is used up, and then Preparation of the original fabric to be used and temporary construction of the starting edge of the original fabric are also carried out. Note that, in addition to thermoplastic foam resin sheets, the original fabric can also be used to join (transfer) old and new fabrics in the case of other thermoplastic resin sheets, films, etc. (including laminated products). Further, when the user side of the raw fabric to be run is repeating intermittent forming processing, for example, a stepped roller portion 60 is provided as shown by the chain line in the middle to adjust the running.

According to the present invention as described above, the end of use on the used web side can be easily detected by energization through contact between the electromagnetic part and the core tube made of a magnetic material, and the end of the used web can be cut at appropriate locations on the terminal side. and,
The end of the cut is joined by heat fusion to the starting end of the raw material to be used next time in a timely manner, and the raw material can be run continuously without any interruption, allowing the worker to This eliminates the need for artificial handover work such as waiting for the end of a roll and joining it with a new original roll, and the worker can prepare the next original roll and the starting end of the original roll while the original roll is still in use. Since all you need to do is to temporarily set up the material, it is very easy to manage the work.Among thermoplastic resin sheets and films, foamed resin has a particularly low amount of unwinding per sheet due to its thickness. This is particularly convenient for joining old and new sheets, resulting in greater efficiency and labor savings.

In addition, a detection unit is installed that can detect the end of the used web by energizing it when the electromagnetic part that had been along the web until then comes into contact with the web core tube made of a magnetic material. Therefore, it is possible to realize reliable detection immediately after the end of the use of the original fabric, and it is easy to issue operation commands to the cutting and joining parts, which allows for optimal timing of cutting and joining. It can be cut as close as possible to the end of the original fabric to be used, and can be cut at appropriate points on the end side of the original fabric and joined by heat fusion between the cutting machine and the starting edge of the original fabric to be used next time. In terms of use, for example, when performing forming processing, it is possible to reduce the loss due to the overlapped parts of the original fabrics, and also to distribute this loss part to the trimming area between the molded products. As a result, it is possible to reliably and efficiently carry out the welding of original sheets by moving the webs together.

Furthermore, a raw fabric supply unit for next use is installed near the used fabric supply unit via a feeding unit for feeding the next use fabric, and the end of the used fabric is detected. Since the original fabric supply section is limited to only one location, it is sufficient to provide only one part for detecting the end of the used original fabric, one cutting section, etc., which does not complicate the equipment and requires less equipment space. It is easy to use, and the manufacturing cost of the device is also low.

[Brief explanation of the drawing]

The figures illustrate embodiments of the present invention, and FIG. 1 is a front view, FIG. 2 is a plan view, and FIGS. 3 to 5 are front views showing examples of changes in the holding state of the electromagnetic part. 6 to 8 are front views of main parts illustrating the automatic joining order of original fabrics. 2... Original fabric supply unit in use, 2'... Original fabric supply unit to be used next time, 3... Electromagnetic unit, 31...
...Holding member, 32... Pivotal part, 4, 4'...
...Spring, 5. ．．・．． ．．・Cylinder mechanism, 6...
...cutting section, 7...joining section, 8...lifting mechanism,
9...Stopper, 10...Temporary part, 11
...Protrusion for insertion, 12...Support roll, A...Original fabric to be used, A'...Original fabric for next use, A''...Original fabric start end for next use, 53. ...Original fabric feeding section. Fig. 1 Fig. 3 Fig. 2 Fig. 4 Fig. 5 Fig. 6 Fig. 7 Fig. 8

Claims (1)

[Scope of Claims] 1. An original fabric supply unit for next use is provided near the original fabric supply unit for next use via a feeding unit for feeding the original fabric for next use, and A detection unit is installed that detects the end of use by energizing when the electromagnetic part that had been along the original fabric until then comes into contact with the original fabric core tube made of a magnetic material. A temporary part is provided above the original fabric to clamp and hold the starting edge of the original fabric for next use, and it rises in response to a message from the detection unit below while the original fabric is traveling, and detects the end of the original fabric to be used. It is equipped with a cutting part that cuts an appropriate part, and a joining part that rises at a position adjacent to the cutting part and at the same time as the cutting part, and overlaps and heat-seals the cut end and the starting end of the material to be used next time. This is an automatic joining device for raw materials such as foamed resin sheets, which is characterized by the ability to 2. The automatic joining device for raw materials such as foamed resin sheets as set forth in claim 1, wherein the electromagnetic part of the detection unit is directly or indirectly pressed against the center of the materials by a pressing member. 3 The cutting part consists of a heated nichrome wire cutter,
The joint part consists of a heating plate, and the height of the nichrome wire cutter is located above the upper end of the heating plate, so that both can rise to a predetermined position at the same time and are placed next to each other, and the nichrome wire cutter stops rising after the cutting action. 2. The automatic joining apparatus for raw materials such as foamed resin sheets as claimed in claim 1, wherein only the heating plate can be raised by lifting the heating plate. 4. Automatic joining of raw materials such as foamed resin sheets as set forth in claim 1 above, wherein the temporary part comprises a protruding part for insertion and a support roll for insertion that can be rotated from the position of the protruding part to a non-temporary position. Device. 5. The automatic joining device for raw materials such as foamed resin sheets as set forth in claim 1, wherein the temporary part comprises a vacuum suction mechanism.