JP2648905B2 - Heat cutter device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates, regarding the synthetic resin band body in a heated blade to the heat cutter device for straw cutter cutting.

[0002]

2. Description of the Related Art FIG. 10 shows an example of a case where a band-shaped material to be cut is cut with a blade body. In the case of the figure, the material c to be cut on the support surface a is cut off by a blade body b which has descended as indicated by an arrow d from above. The material c to be cut and cut in this manner is, for example, a synthetic resin band which is not a woven fabric, a single band made of a woven fabric of a synthetic resin fiber material, or a woven fabric of a synthetic resin fiber material. There is a tubular woven fabric folded into a two-ply flat shape.

[0003] Among these materials to be cut c, a single band made of a synthetic resin fiber material fabric or the flat tubular fabric is pressed and cut as shown in FIG. Since the synthetic resin fibers are frayed, it is necessary to treat the cut end after cutting to eliminate the fraying of the fibers. Such a process is a process of heating the cut end of the material to be cut c to melt the end face, and is a process separately performed in a process after the push-cutting, so that considerable inconvenience is required.

Conventionally, as a device for pressing and cutting a material c to be cut, such as a single band made of a synthetic resin fiber material fabric or a flat tubular fabric, a blade heated to a predetermined temperature is used. A heat cutter device using a body is known.
In this apparatus, the blade body d shown in FIG. 10 is heated to a predetermined temperature by a heater (not shown). Using this heater cutter device, the material to be cut c made of the woven fabric of the synthetic resin fiber material as described above is cut off by cutting.
When the material c is cut off, the synthetic resin fiber is heated and melted at the cut so that the fiber is not frayed, so that there is no need to separately melt the cut in the post-cut cutting process.

[0005]

[SUMMARY OF THE INVENTION However, when conventional for straw cutter cuts the workpiece c made of woven plastic fiber material in Hitakatta device, as shown illustratively in FIG. 11, the blade body b when separating the workpiece c from blade b
It has been found that the synthetic resin melted on the end face of the cut end of the cut material c heated by the above-mentioned method adheres to the blade body b and draws a thread, which hardens and makes the end face f of the cut end unsightly.

Further, when the material to be cut c is a flattened tubular fabric, the end face f of the cut becomes unsightly due to the stringing phenomenon as shown in FIG. However, it was found that the cut end was closed by the molten synthetic resin layer e.

[0007] The present invention has been made under the above circumstances. That is, the object of the present invention is to basically cut and cut a synthetic resin strip with a blade heated to a predetermined temperature, and in that case, melt the cut so that the fiber does not fray at the cut. Not only can it be processed, but the stringing phenomenon does not occur at the cut end due to press cutting,
Moreover, it is an object of the present invention to provide a heat cutter device capable of finishing the end face of the cut edge neatly.

[0008]

In order to achieve the above object, the present invention employs the following technical means. That is, the heat cutter device according to the first aspect of the present invention has a support surface on which a synthetic resin band as a material to be cut is fed, and an upper bulging shape by lifting the band fed on the support surface. An elevating body that supports shape retention, a blade body that is provided above the elevating body so as to face the elevating body and is heated to a predetermined temperature, and the band body that is lifted up by the elevating body and cut off by the blade body. A heating mechanism for pulling a predetermined width in a direction away from the blade body on both sides of the cutting position.
A tocutter device, wherein the tension mechanism comprises an elevating body and a blade body.
The cutting position of the synthetic resin strip cut in cooperation with
On each side and lifted by a lifting body
And a pair of rolls contacting the belt
A pair of upper ends of a predetermined angle in the direction of pulling the band from the blade
Roll rotation control mechanism for synchronously rotating the roll
And the roll rotation control mechanism of the tension mechanism is a pair of
Each of these roles is linked separately to each of the roles
A pair of swing arms that can swing up and down with the rotation of
These swing arms are connected and their swing arms
A lifting frame that can be raised and lowered with vertical
Pressing cylinder for raising and lowering the frame
The lifting path of the lifting frame that is raised and lowered by the Linda
To stop the lift frame at different positions inside
And a possible variable level stopper mechanism .

[0009]

[Action] In the invention according to claim 1, the synthetic resin band member as workpiece is shape retaining the shape bulging upward lifted by the lifting member, bent parts lifted by the lifting member in that the strip State. In addition, a pair of rollers of the tensioning mechanism are formed in accordance with the above-mentioned swollen body maintained in a bulging shape being cut off by a blade body heated to a predetermined temperature .
The roll is rotated by the operation of the roll rotation control mechanism,
The strip in contact with these rolls, the rotation angle of the roll
The cut is opened by being pulled away from the blade body to both sides by a suitable length . Due to these facts, when the band is cut and cut by the blade heated to a predetermined temperature, the cut of the band is opened without causing a stringing phenomenon and immediately separated from the blade after cutting, and the cut of the cut is cut off. The end face is finished neatly.

Here, the roll rotation control mechanism includes a push-pull mechanism.
Elevating operation of the elevating frame by use cylinders is converted into a rotational movement of the pair of rolls by a pair of oscillating arms, change or <br/>, the stop position of the vertical movement of the lifting frame according to the level variable stopper at a predetermined timing By doing so, for example, the lowering operation of the lifting frame is intermittently performed at another stage (for example, two stages), and the rotational motion of the pair of rolls is intermittently performed .

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 schematically shows a heat cutter device A according to an embodiment of the present invention and a device B for feeding a synthetic resin strip 1 as a material to be cut to the heat cutter device A. FIG. 2 is a schematic front view illustrating the heat cutter device A, FIG. 3 is a schematic explanatory diagram illustrating a roll rotation control mechanism 6 of a tension mechanism 5 described later, and FIGS. FIG. 7 is an explanatory view of a synthetic resin band (material to be cut) 1 lifted by an elevating body 3 described later, FIG.
Is an explanatory view showing a cut end of the synthetic resin band 1 cut and cut, and FIG. 9 is a partially enlarged view of the synthetic resin band 1.

As can be seen in FIG. 9, the band 1 is formed by folding a tubular woven fabric made of a synthetic resin fiber woven fabric into a two-layered flat shape. Synthetic resin fiber materials include polyethylene, polypropylene, polyester, vinylon,
Synthetic resin, such as nylon, that melts when heated is used. The band 1 is used for applications in which a large tensile strength or breaking force is applied, such as a rope for hanging a steel material or a cable for binding a cargo storage bag.

The feeding device B includes a turntable 10
1. Vertical guide rod 102, guide rod 103 for changing the belt feeding posture, a plurality of guide rolls 104, 105,
106, band feed amount detection mechanism 107, band feed roll 1
08 and the like. In this feeding device B, when the band roll 1 ′ is put on the turntable 101 and the band 1 is fed to the heat cutter device A by the band feeding roll 108, the turntable 101 rotates to rotate the band roll. The band 1 is sequentially fed from 1 '. The use of the feeding device B using the turntable 101 as described above has an advantage that even if the belt roll 1 'is heavy, it can be easily put on the turntable 101 without causing its collapse.

The heat cutter apparatus A comprises a support surface 2 to which the band 1 is fed, and a lifting / lowering body 3 which lifts the band 1 fed to the support surface 2 and holds the band 1 in an upwardly bulging shape. When,
A blade body 4 disposed above the elevating body 3 so as to face the elevating body 3 and heated to a predetermined temperature by the heater H;
The band 1 lifted by the blade body and cut off by the blade body 4 has a predetermined width in the direction of pulling away from the blade body 4 on both sides of the cutting position (arrow X in FIG. 5, arrow Y in FIG. 6). And a pulling mechanism 5 for pulling only by.

In this heat cutter apparatus A, FIGS.
As shown in FIG. 7, in the elevating body 3, the contact surface 31 with respect to the band 1 is formed in an arc-shaped surface projecting upward, and a blade body is provided on the top of the contact surface 31. 4
A relief groove 32 into which the cutting edge 41 (see FIG. 6) is inserted is provided over the entire axial length.

As shown in FIG. 1 and FIGS. 4 to 6, the tension mechanism 5
2 and 3 are provided with a pair of rolls 51 and 52 which are knurled on the outer peripheral surface to prevent slippage.
The roll rotation control mechanism 6 shown in FIG. And
As shown in FIGS. 4 and 5, a pair of rolls 51 and 52 are provided.
Are provided separately on both sides of the cutting position A of the synthetic resin strip 1 cut by the cooperation of the lifting body 3 and the blade body 4.

The roll rotation control mechanism 6 will be described with reference to FIG. The roll rotation control mechanism 6 includes a pair of swing arms 61 and 62 that are individually connected to the pair of rolls 51 and 52 and that can swing up and down with the rotation of the rolls 51 and 52. These swing arms 61,
An elevating frame 63 to which the elevating frame 63 is connected and which can be moved up and down with the swinging arms 61 and 62 vertically;
A variable level stopper mechanism 69 is provided which can stop the lifting frame 63 at a different position in the lifting path of the lifting frame 63 which is raised and lowered by a pushing cylinder (air cylinder) 64. More specifically, the pair of swing arms 61 and 62 have elongated holes 65,
A shaft 67 projecting from the elevating frame 63 is fitted in the long holes 65 and 66.
When the lifting frame 63 is moved up and down by pushing and pulling the pushing cylinder 64 over the entire stroke range, the lifting movement is converted by the pair of swing arms 61 and 62 into the rotational movement of the pair of rolls 51 and 52. It has become. In addition, the rotation of the pair of rolls 51 and 52 associated with the lifting and lowering of the lifting frame 63 is such that the rolls rotate synchronously in opposite directions. In this embodiment, an air cylinder is used as the variable level stopper mechanism 69 so that the amount of movement of the rod 68 can be adjusted in two stages.

In the above-described roll rotation control mechanism 6, as shown in FIG. 3, when the rod 68 of the level variable stopper mechanism 69 is protruded to the maximum extent, the pushing cylinder 64 is pushed out to lower the lifting frame 63. During the descent, that is, at the intermediate position of the elevating path of the elevating frame 63, the elevating frame 63 hits the rod 68, and the pushing cylinder 64 is no longer pushed out. The pushing amount a 'of the pushing cylinder 64 at this time corresponds to the distance a between the lower end of the elevating frame 63 and the rod 68 before descending, and the rotation angle of the pair of rolls 51 and 52 corresponds to the lowering of the elevating frame 63. The angles θb and θb are commensurate with the amount (equal to the interval a). The rotation direction of the rolls 51 and 52 at this time will be described later. Thus, the lifting frame 6
After 3 descent is stopped by the level variable stopper mechanism 69 at an intermediate position of the lifting path, when the retracted rod 68 of the level variable stopper mechanism 69 only b, is pressed by the push pull cylinder 64 to follow it The elevating frame 63 is lowered by the same amount, and the pair of rolls 51 and 52 are rotated by angles θa and θa corresponding to the amount of descent of the elevating frame 63 (equal to the above-mentioned b). The pushing amount of the pushing cylinder 64 at this time is indicated by reference numeral b '. The rotation direction of the rolls 51 and 52 at this time will also be described later.

Next, a cutting method will be described.

As shown in FIG. 1, when the synthetic resin band 1 made of tubular fabric fed to the support surface 2 is lifted by the lifting body 3, the band 1 is lifted by the lifting body 3 as shown in FIG. It bulges upward along the contact surface 31 which is an arc surface and bends in an arc shape,
The upper layer 11 and the lower layer 12 of the two stacked strips 1 are both slightly stretched. A pair of rolls 5 are provided on both sides of the cut portion b of the band 1 thus bent.
1 and 52 are in contact with each other. When the blade body 4 heated to a predetermined temperature from this state descends as shown by an arrow m in FIG. 4, the blade tip 41 of the blade body 4 bulges in an arc shape as shown in FIG. After contacting the upper layer 11 at the location, the upper layer 11 is cut off by cutting, and subsequently, the cutting edge 41 of the blade body 4 that cuts off the upper layer 11 is cut as shown in FIG.
After that, the lower layer 12 is pressed and cut. Upper layer 1
The blade body 41 that has been pressed and cut between the lower layer 1 and the lower layer 12 has its blade edge 41 protruding into the relief groove 32 of the elevating body 3 as shown in FIG.

In the above pushing and cutting step, the roll rotation control mechanism described with reference to FIG. 3 is used in accordance with the cutting and cutting of the upper layer 11 of the band 1 by the blade body 4 as shown in FIGS. 6 is pushed out. Then
The elevating frame 63 is lowered until it hits the rod 68 of the variable level stopper mechanism 69 at an intermediate position of the elevating path. At this time, the pushing amount of the pushing cylinder is a ', the descending amount of the lifting frame 63 is a, and the rotation angles of the pair of rolls 51 and 52 are θb and θb. Further, a pair of rolls 5 contacting the upper layer 11 of the band 1 on both sides sandwiching the cutting position a.
The rotation directions of the reference numerals 1 and 52 are directions in which the band 1 is separated from the blade 4 (indicated by an arrow R1 in FIG. 5).

As described above, the upper layer 11 of the band 1 by the blade 4
Of the pair of rolls 51 and 52
When they rotate in opposite directions, the upper layer 11 of the band 1 is pulled by the rotation as indicated by arrows X and X in FIG. 5 and is forcibly separated from the blade 4, thereby opening the cut. The pulling operation of the rolls 51 and 52 with respect to the band 1 at this time is the first-stage pulling operation.

The cutting and cutting operation of the upper layer 11 of the band 1 by the blade 4 is completed, and the operation of cutting and cutting the lower layer 12 of the band 1 by the blade 4 will be described with reference to FIG. The rod 68 of the variable level stopper mechanism 69
And pull it in, the cylinder 6
4, the elevating frame 63 is lowered by the same amount, and the pair of rolls 51, 52 are moved by the arrows R by angles θa, θa corresponding to the amount of lowering of the elevating frame 63 as shown in FIG.
2. Rotate in the direction indicated by R2.

By the rotation of the rolls 51 and 52, the lower layer 11 of the band 1 is pulled as shown by arrows Y and Y in FIG. 6 and is forcibly separated from the blade 4, thereby opening the cut. The pulling operation of the rolls 51 and 52 with respect to the band 1 at this time is the second-stage pulling operation.

In the cut-off cutting described with reference to FIGS. 3 to 6, the band 1 bulges in an arc shape before cutting, and the cut end is formed by a pair of rolls 51, in accordance with the cut-off cutting of the upper layer 11. Since the upper layer 11 is forcibly pulled away from the blade body 4 by the 52, the cut of the upper layer 11 is forced by the pair of rolls 51, 52 by the property that the upper layer 11 tends to return to the original flat shape immediately after the cutting. The incision greatly opens the incision by being pulled, which helps to prevent a stringing phenomenon in the incision in the upper layer 11. Then, the lower layer 12 is cut off by the blade body 4 in a state where the cut edge of the upper layer 11 is largely opened, and also at this time, the band body 1 swells in an arc shape before cutting, and the lower layer 12 is cut off. The cut edge is forcibly pulled away from the blade body 4 by the pair of rolls 51 and 52 in accordance with the cutting, so that the cut edge of the lower layer 11 returns the lower layer 12 to its original flat shape immediately after the cutting. The cut is greatly opened due to the nature of the laundering and the forced pull by the pair of rolls 51, 52, which helps to prevent the stringing phenomenon at the cut in the lower layer 12. Further, since the upper layer 11 has a large cut at the time of the push-pull cutting of the lower layer 12, the blade body 4 does not come into contact with the end face of the cut of the upper layer 11, so that the cut is melted as described in FIG. A situation in which it is blocked by the synthetic resin layer e cannot occur. Since the end faces of the cuts of the upper layer 11 and the lower layer 12 are heated by the blade body 4 when they are cut off by cutting, the end faces are hardened after melting. Therefore, the fibers do not fray at the end face of the cut.

FIG. 8 shows a cut end of a band 1 made of a tubular fabric cut and cut using the above-described heat cutter device A. As can be seen in the figure, the upper layer 11 and lower layer 12 of the band 1
The end faces of the cut edges are synthetic resin layers 13 and 14 that have been hardened after melting.
And the cut ends are not closed by the synthetic resin layers 13 and 14.

In the heat cutter A and the cutting method of the synthetic resin strip described above, the synthetic resin strip 1 as a material to be cut is formed of a synthetic resin fiber material fabric into a two-layer flat shape. A folded tube fabric is selected. However, in the above-described heat cutter device A and the method for cutting a synthetic resin band, it is also possible to select a single band made of a woven fabric of synthetic resin fiber material as the material to be cut. As described with reference to FIG. 7, the belt lifted by the lifting / lowering body 3 bends into a bulged arc shape.
Also, the upper layer 11 or the lower layer 12 is cut in the same manner as that described with reference to FIGS. Therefore, even in such a one-piece band, the end face is finely melted so that the fiber is not frayed at the cut end, and the stringing phenomenon does not occur. Further, even when a non-woven sheet is selected as the synthetic resin strip as the material to be cut, since the stringing phenomenon does not occur at the cut, the cut is finely finished.

When a single band or sheet is to be selected as a material to be cut, a pair of rolls 51 and 52
It is not necessary to carry out the tension operation over the steps, and even when the band 1 made of the tubular fabric described above is selected as the material to be cut,
It is not always necessary to make the pair of rolls 51 and 52 of the pulling mechanism 5 perform the pulling operation in two stages. Thus, when it is not necessary to cause the pair of rolls 51 and 52 of the pulling mechanism 5 to perform the pulling operation in two stages, the rod 68 of the level variable stopper mechanism 69 described with reference to FIG. In this way, the swollen portion of the band 1 lifted up by the elevating body 3 and held in the shape of the upper bulge is supported and pushed by the blade body 4, and the band body is moved in accordance with the pushing and cutting operation of the blade body 4. 1 is pulled on both sides of the cutting position in the direction of pulling away from the blade body. The tension mechanism is not limited to a mechanism using a roll, but may be a mechanism in which the band is pulled by, for example, a serrated locking member.

Also, two air cylinders are used as the level variable stopper mechanism 69 of the pulling mechanism 5, the cylinder tube of the other air cylinder is connected to the rod of one air cylinder, and the rod of the other air cylinder is shown. 3
It is also possible to adopt the one connected to the pair of swing arms 61 and 62 shown in FIG.

In the sheet cutter apparatus A, the blade edge 41 of the blade body 4 heated to several hundred degrees by the heater H may be slightly bowed and deformed.
As in the above embodiment, at the point of time when the push-cutting is completed, the cutting edge 41 of the blade body 4 is set in the escape groove portion 32 of the elevating body 3 as shown in FIG.
, The upper layer 11 and the lower layer 12 of the band 1 can be surely cut off even if the blade edge 41 is bowed and deformed.

In the case of the heat cutter device A described in the embodiment, even a tube such as a household gas hose in which reinforcing fibers are embedded in a synthetic resin layer can be satisfactorily pressed and cut. It has been confirmed that the reinforcing fibers are melted so that the reinforcing fibers do not fray at the end faces.

[0032]

The heat cutter device according to the first aspect of the present invention.
According to, a synthetic resin sheet or synthetic resin band member is a woven fabric as material to be cut, since the cut of the strip in accordance with the straw cutter cutting by blade away from the blade, the blade body not cause stringiness phenomenon as being heated to a predetermined temperature, remarkable effect that the end faces of the cut is finished beautifully is obtained.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view schematically showing a heat cutter device and a band feeding device according to an embodiment of the present invention.

FIG. 2 is a schematic front view illustrating a heat cutter device.

FIG. 3 is a schematic explanatory view showing a roll rotation control mechanism of a tension mechanism.

FIG. 4 is an operation explanatory view of an initial stage of press cutting using a heat cutter device.

FIG. 5 is an operation explanatory diagram of an intermediate stage of press cutting using a heat cutter device.

FIG. 6 is an operation explanatory view of the final stage of the push-cutting using the heat cutter device.

FIG. 7 is an explanatory view of the synthetic resin band lifted by the elevating body.

FIG. 8 is an explanatory view showing a cut edge of a synthetic resin strip that has been cut off by pressing.

FIG. 9 is a schematic perspective view showing an enlarged part of a tubular fabric as a synthetic resin band.

FIG. 10 is an explanatory view of a push-cutting cutting by a blade body.

FIG. 11 is an explanatory diagram for explaining a problem of the conventional heat cutter device.

FIG. 12 is an explanatory view showing a cut end of a synthetic resin strip cut by a conventional heat cutter device.

[Explanation of symbols]

Reference Signs List A heat cutter device 1 band (tubular fabric) 2 support surface 3 elevating body 4 blade body 5 tension mechanism 6 roll rotation control mechanism 11 upper layer 12 lower layer 51, 52 pair of rolls 61, 62 swing arm 63 elevating frame 64 push / pull Cylinder 69 level variable stopper mechanism

Claims (1)

(57) [Claims] 1. A supporting surface to which a synthetic resin band as a material to be cut is fed, an elevating body for lifting the band fed to the supporting surface and holding and supporting it in an upwardly bulging shape; A blade body disposed above the body and opposed to the elevating body and heated to a predetermined temperature; and a blade which is lifted by the elevating body and cut off by the blade body at both sides sandwiching the cutting position. A pulling mechanism that pulls by a predetermined width in the direction away from the body
Wherein the tension mechanism is cut by the cooperation of the lifting body and the blade body.
Are placed separately on both sides of the cutting position of the synthetic resin strip
And is brought into contact with the band lifted by the lifting body
Pull off the pair of rolls and the cut band from the blade
The pair of rolls are tuned and rotated by a predetermined angle in the
Becomes in the order of roll rotation control mechanism, the pulling mechanism of the roll rotation control mechanism, the pair of rolls
Each of them is connected separately and the rotation of their rolls
A pair of swing arms that can swing up and down
Swinging arms are connected and the swinging arms
A lifting frame that can move up and down with movement, and a lifting frame
For lifting cylinder and lifting cylinder
Therefore, a different position in the lifting path of the lifting frame
Where the lifting frame can be stopped at
A heat cutter device comprising: a bell variable stopper mechanism .