JPH06320488A - Automatic cutting device for moving work - Google Patents

Abstract

PURPOSE:To provide an automatic cutting device suitable for continuous cutting of a polyethylene film, thermally adhered to the upper and under surfaces of a heat insulating material in the manufacturing process thereof. CONSTITUTION:A cutter is mounted on cutter mounting plates 77a, 77b, and 86 movable to a support bed 61 reciprocating over a rail 52 by means of air cylinders 71a, 71b, and 83 and movable in a direction crossing the moving direction of the support bed 61 at right angles by means of rodless cylinders 75a, 75b, and 84. After a substance to be cut is inserted in the position of a cutter, the cutter is moved together with the support bed 61 through a proper control mechanism to cut polyethylene films thermally adhered to the upper and under surfaces of a heat insulating material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic cutting device for moving objects to be cut, and more particularly, to both upper and lower surfaces of a polystyrene foam material as a heat insulating material which has been used as a heat insulating material for soil and walls in construction sites in recent years. When continuously producing a composite heat insulating material in which a polyethylene film is heat-bonded for the purpose of imparting strength and moistureproof function to the polyethylene film, the polyethylene film supplied from the winding roll and heat-bonded is cut in the manufacturing process. The present invention relates to an automatic cutting device that can be suitably used.

[0002]

2. Description of the Related Art As shown in FIG. 6 as an example, a plate-like substrate 2 such as a polystyrene foam having a thickness of about 20 to 50 mm as a heat insulating material has a thickness for the purpose of imparting strength and moistureproof function to both upper and lower sides. In recent years, a composite heat insulating material 1 in which laminated sheets 3 and 4 having a polyethylene film of about 20 μm or more as a base material sheet are heat-bonded has been used as a heat insulating material for a dirt floor or a wall portion at a construction site. Many manufacturing apparatuses have been proposed for that purpose, and the applicant of the present application has already applied for an improved apparatus for that purpose (Japanese Patent Application No. 5-57327).

The process of manufacturing the composite heat insulating material 1 will be described below by taking the apparatus as an example. As shown in FIG. 4, the plate-shaped base material 2 made of a synthetic resin foam material is used as the loading means 10.
And, it is fed into the heat-bonded portion 12 via the forced feeding means 11 at a predetermined interval S (see FIG. 5). The plate-shaped substrate 2 is transferred from the heating roll 12a side toward the take-up roll 12b while being sandwiched between the heating rolls 12a, 12a, and the laminated sheets 3 and 4 having a heat-sensitive adhesive layer on one surface therebetween are transferred between them. The front surface and the back surface of the base material 2 are heat-bonded. In addition,
In the figure, B is a pre-heating means, which directly pre-heats the heat-sensitive adhesive resin layer of the delivered laminated sheet. M
Is an electric motor, and transmits its rotational force to the heating roll 12a and the take-up roll 12b by an appropriate power transmission means such as chain conduction.

The plate-shaped substrate 2 to which the laminated sheets 3 and 4 are heat-bonded is stabilized by being subjected to predetermined cooling by the take-up roll 12b, and then taken out of the apparatus as the product 20 from the product carrying-out means 13. FIG. 5 schematically illustrates this state, in which a plurality of base materials 2 and 2 arranged at regular intervals S are arranged.
The laminated sheets 3 and 4 are provided on both sides of the heating rolls 12a and 12a.
Is continuously heat-bonded. Then, outside the apparatus, a cutter is put in an appropriate place of the interval S to cut the laminated sheets on both sides, so that the continuous composite heat insulating materials 20 are individually separated, and a product as shown in FIG. Completed as material 1). Usually, this cutting work is performed manually.

[0005]

As described above, the conventional device does not include a device for cutting the laminated sheets 3 and 4 which are continuously heat-bonded to both surfaces of the plurality of base materials 2. It was necessary to make a manual cut to separate the continuous products individually. This not only complicates the manufacturing process, but also makes it difficult to obtain a uniform product.

An object of the present invention is to cut and separate an object to be cut that continuously moves in the manufacturing process thereof, such as the above composite heat insulating material, without stopping the movement. It is to obtain an automatic cutting device, which simplifies the manufacturing process and at the same time makes it possible to obtain a uniform product.

[0007]

In order to solve the above-mentioned problems and to achieve the object, an automatic cutting device for a movable cutting object according to the present invention basically comprises a support base which reciprocates on a machine frame,
Reciprocating means of the support, a cutter mounted on the support so as to move up and down with respect to the support and reciprocate in a direction different from the moving direction of the support, and move up and down with respect to the support. An object pressing means that is movably mounted, a sensor mounted on a support table for detecting the existence of the object to be cut, and a cutting object moving together with the support table based on a signal from the sensor. Means for bringing the cutter into contact with the object and moving the object in a direction different from the moving direction of the object to be cut,
Composed of and.

It is a preferred embodiment that the cutters are provided above and below the object to be cut so that both the front and back surfaces of the object can be cut at the same time. The automatic cutting device for a movable cutting object according to the present invention can be used together with an appropriate cutting object feeding means arranged on the upstream side. It is a very preferable mode to use by arranging with the product unloading means 13 or on the downstream side of the product unloading means 13.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The automatic cutting device according to the present invention will be described below in more detail based on embodiments. 1 is a side view of an embodiment of an automatic cutting device AT according to the present invention, and FIG. 2 is a front view seen from the right direction. In this example, the automatic cutting device AT is arranged between the thermal bonding portion 12 and the product unloading means 13 in the device shown in FIG. Therefore, the heat-bonded material 20 of the plate-shaped base materials 2 and 2 and the continuous laminated sheets 3 and 4 which are manufactured in the heat-bonded portion 12 at a predetermined interval S as shown in FIG. At 1, the sheet is fed to the automatic cutting device AT from right to left.

As will be described later, when the object to be cut has such a space S, it is necessary to fill the space S with a solid object (for example, a foam material). Become. Therefore, the heat-bonded material 2 is formed in the heat-bonded portion 12.
In manufacturing 0, the process of supplying the plate-shaped base material 2 and then inserting the space filling material SS (hereinafter referred to as a spacer) in a state of being in contact with it and inserting the plate-shaped base material 2 in a state of being in contact therewith are repeated. Try to use the one produced by

First, the structure of the apparatus will be described. The automatic cutting device AT has left and right machine frames 50, 50 having a substantially gate shape in a side view, and an upper surface of the machine frame 50 is a flat surface 51, and a rail 52 is provided on the flat surface over substantially the entire length thereof. 52 is fixed. On the rails 52, 52, there are four guide wheels 62, 62 provided with a support base 61 on the left and right (only one of them is shown in FIG. 1, and one on the left and one on the right of FIG. 2). It is supported via the rail 52 and is movable on the rail 52.

As shown in FIG. 2, two columns 63a and 63b are erected upright in the vicinity of the ends in the width direction of the support plate 61, and the first columns are provided at the upper ends of the columns 63a and 63b. The pedestal 64 is fixedly installed. In addition, the pillar 63a,
Cylindrical bodies 65a and 65b are slidably fitted in 63b, and as shown in FIG.
Are fixedly mounted by the second mount 66 so that they can simultaneously slide and move with respect to the columns.

A screw rod 68 having a worm wheel 67 at its upper end is rotatably supported via a bearing at approximately the center of the first frame 64, and further meshes with the worm wheel 67. The worm gear 69 is also rotatably supported. As shown in FIG. 2, the left and right worm gears 69, 69 are connected by a connecting pipe 70 so as to integrally rotate, and a handle H is fixed to one worm gear 69. On the other hand, a female screw is formed at a portion of the second mount 66 with which the screw rod 68 abuts, and the screw rod 68 is screw-fitted to the female screw.

Therefore, by rotating the handle H, the left and right screw rods 68, 68 (that is, the second mount 66) via the worm gear 69 and the worm wheel 67.
Screw rods 68 and 6 that are screw-fitted to both ends in the width direction of the
8) rotates at the same time, and by the rotation, the second mount 66 can change its position in the vertical direction along the columns 63a and 63b.

At both end portions of the second frame 66 in the width direction and near the columns 63a and 63b,
Four first air cylinders 71a and 71b are fixedly provided, and the piston rods of the first air cylinders 71a and 71b penetrate the second mount 66 and extend downward in the drawing. As shown in FIG. 2, a known pneumatic rodless cylinder device 75a is mounted between the piston rods of the first air cylinders 71a, 71a located at both ends in the width direction. A similar rodless cylinder device 75b is mounted between the piston rods of the air cylinders 71b and 71b. further,
Movable piece 76 of each rodless cylinder device 75a, 75b
Cutter mounting plates 77a and 77b are fixed to a and 76b.

Pressure air is supplied to the first air cylinders 71a, 71b from an appropriate pressure air source through a valve mechanism (not shown), and rodless cylinder devices 75a, 75b.
Also, pressurized air is supplied via a valve mechanism (not shown).
Each of the first air cylinders 71a, 71a and 71b, 71
When the compressed air is supplied to and discharged from b, the rodless cylinder devices 75a and 75b move up and down with respect to the second mount 66.
When the compressed air is supplied to and discharged from a and 75b, the cutter mounting plates 77a and 77b reciprocate in the left-right direction in FIG.

Two second air cylinders 78 are further provided in the width direction at the central portion of the second mount 66.
The piston rod of the second air cylinder 78 penetrates the second mount 66 and extends downward. A flat plate 79 is fixed to the tip of the piston rod. Second
Similarly to the first air cylinder group, the air cylinder 78 is also supplied with pressurized air from a compressed air source through an appropriate valve mechanism,
As a result, the flat plate 79 fixedly provided at the tip of the piston rod moves up and down, and serves to fix the object to be cut in pressure contact with the support base 61 side in the lowered position as described later.

In this embodiment, the lower surface of the support base 61 is a third mount which is substantially U-shaped in front view (see FIG. 2) and substantially L-shaped in side view (see FIG. 1). 80 is fixed. The third air cylinder 8 is provided on the horizontally extending portion 81 of the third frame 80 and in the vicinity of both ends in the width direction thereof.
3, 83 are fixedly provided, and the third air cylinder 83
The piston rod of the first air cylinder 71a, 7
Similarly to the case of 1b, the rodless cylinder device 84 is fixedly mounted, and the cutter mounting plate 86 is fixed to the movable piece 85 of the rodless cylinder device 84.

Pressure air is also supplied to the third air cylinder 83 from an appropriate compressed air source via a valve mechanism not shown, and pressure air is also supplied to the rodless cylinder device 84 via a valve mechanism not shown. It As in the other cases, the pressure air is supplied to and discharged from the third air cylinder 83, whereby the rodless cylinder device 84 moves vertically with respect to the third pedestal 80. By supplying and discharging pressurized air to and from 84, the cutter mounting plate 86 reciprocates in the left-right direction.

In this embodiment, as described above, the two cutter mounting plates 77a and 77b are located above the support base 61 with a predetermined space therebetween, and one of the upstream cutter mounting plates 77b is located. The cutter mounting plate 86 on the lower side is located at a position opposed to. The distance between the two cutter mounting plates 77a and 77b is the same as that shown in FIG.
The space S between the plate-shaped base materials 2 and 2 in the heat-bonded material 20 of the form shown in FIG.

Further, a plurality of guide members 88, 88, which can be positionally fixed in the width direction by an appropriate means, are provided in the vicinity of the ends in the width direction of the support base 61, and are inserted as will be described later. Position the incoming member to be cut. Also,
An appropriate sensor 89 such as an optical sensor is provided on either one of the guide members 88 to detect the presence or absence of an object to be cut.

Further, as clearly shown in FIG. 1, the machine casing 50
A screw rod 90, one end of which is rotatably supported by the machine frame, is provided at a substantially central portion in the width direction. A gear 91 is spline-engaged in the vicinity of a pivotal support end of the screw rod 90 to the machine frame 50, and the gear 91 is connected to a drive source (not shown) via an appropriate transmission means. Further, the other end of the screw rod 90 extends forward and is screw-fitted to the female screw boss 92 fixedly mounted on the second frame 80. Therefore, when the screw rod 90 is rotated by the power from a drive source (not shown), the support 61 and all the members attached thereto move on the rail 52 along the rail 52, and the screw rod 90 is moved. The direction of movement is changed by changing the rotation direction of. As will be described later, for the purpose of stabilizing the work, the forward and reverse rotations of the screw rod 90 may be performed by separate drive mechanisms (not shown), or an appropriate quick return mechanism may be used. In addition, 95 is a feed roller provided as needed.

Next, the operation of the above device will be described. Prior to the start of cutting work, each cutter mounting plate 77
An appropriate cutter C (FIG. 3) is attached to a, 77b, and 86 (the cutter C may be a plate-shaped fixed blade or a rotary blade, and the rotary blade is suitable when the material to be cut is a hard material). Next, by operating the handle H, the tip of the cutter C on the upper side hits the object to be cut at a desired depth during the cutting action according to the thickness of the object to be cut (the heat-bonded object 20 in this example). The height of the second pedestal 66 is adjusted so that they can come into contact with each other.

By the control mechanism, the support base 6 is used at the start of work.
1 is disposed on the most upstream side (the rightmost position in FIG. 1), and by operating the first and third air cylinders, the rodless cylinders 75a, 75b on the upper side of the support base 61.
Is at the upper position and at the lower side of the rodless cylinder 8
The cutter C, which is held in its lower position of 4 and is attached to each rodless cylinder, has one stroke end (for convenience, the leftmost position in FIG. 2).
Placed in.

In this state, the heat-bonded material 20 manufactured in the heat-bonded portion 12 and having the spacer SS inserted in the space S, as shown in FIG.
At, the sheet is fed to the automatic cutting device AT from the right to the left. Sensor 89 attached to support 61
Is an arbitrary identification mark formed on each plate-shaped substrate 2,
Alternatively, the individual spacer SS itself, or an arbitrary identification mark formed on the individual spacer SS, or a gap between the individual plate-shaped substrate 2 and the spacer SS, or some other identification signal is recognized. This causes the timer to start counting. At the same time as counting, the screw shaft 90 starts rotating,
The support base 61 is moved toward the downstream side along the rail 52. This moving speed is adjusted so as to be substantially equal to the speed at which the heat-bonded material 20 is sent out from the heat-bonded portion 12.

In addition, the control mechanism is previously provided with the thermal adhesive 20.
From the relationship between the feed speed, the identification signal, and the arrangement position of the sensor 89, the time until the spacer SS reaches the center position of the two rodless cylinders 75a and 75b is set. When the time elapses, the pressure air is sent to the second air cylinder 78 by the command from the control mechanism and descends, and the flat plate 79 provided at the tip of the piston rod causes the spacer SS of the thermal adhesive 20 to move to the support base 61. Fix it. At the same time, pressurized air is also sent to the first air cylinders 71a, 71b and the third air cylinder 83, the rodless cylinders 75a, 75b and 84 move toward the object to be cut, and the laminated sheet by the cutter C is moved. Allows 3 or 4 cutting.

FIG. 3 is an explanatory view showing this state, in which the spacer SS is pressed against the support base 61 by a flat plate 79 provided at the tip of the piston rod of the second air cylinder 78, and the cutter C is moved up and down. It is arranged at a position which can approach the continuous heat-bonded material 20 which is the object to be cut from the direction and can be inserted into the gap between the spacer SS and the front and rear plate-shaped substrates 2, 2.

Next, each rodless cylinder 75a, 7
The pressurized air is supplied to 5b and 84, and the cutter C moves from its one end to the other end. Thereby, the upper laminated sheet 4 is cut along both ends of the spacer SS, and the lower laminated sheet 3 is cut along only the upstream end of the spacer SS. When the cutter C moves to the other end, the control mechanism operates the valve mechanism so as to move the pistons of the first and third air cylinders backward, and also supplies the pressurized air to the rodless cylinders 75a, 75b and 84. Reverse. As a result, the cutter C is separated from the object to be cut and returns to its original position.

On the other hand, the forward movement of the support base 61 is continued, and when the predetermined forward movement limit position is reached, the control mechanism reverses the direction of the pressure air supplied to the second air cylinder 78 and causes the screw to move. The rotation of the rod 90 is also reversed. At this time, the rotation speed of the screw rod 90 in the returning direction is increased by a conventionally known mechanism. Thereby, the flat plate 79 provided at the tip of the piston rod of the second air cylinder 78 is provided.
Moves up to release the contact with the spacer SS, and the entire support base 61 moves upstream along the rails 52 to return to the initial position and the initial state. Note that, as described above, the support base 61 can be returned to the original position without using the reverse rotation of the screw rod 90 but using an arbitrary quick return mechanism (not shown).

During the above cutting operation, the thermal adhesive 20 continues to advance together with the supporting base 61, and its movement is not interrupted. Further, the return of the support base 61 to the original position is because the flat plate 79 provided at the tip of the piston rod of the second air cylinder 78 is released from the pressure contact with the support base 61, so that the heat of the object to be cut is removed. There is no effect on the feeding of the adhesive 20. Then, the laminated sheet 3, 4 is cut by the cutter C.
The heat-bonded material 20 that has been cut into the shape of the individual composite heat insulating material 1 is taken out of the apparatus as the product 20 from the product carrying-out means 13. At that time, the spacer SS is removed from the system by an appropriate means.

In this embodiment, since two cutters are attached to the upper side and one cutter is attached to the lower side as described above, the product after the cutting action has the lower laminated layer as shown in FIG. It will be easily understood that the sheet 3 is cut so as to extend beyond the length of the substrate 2 by the spacer SS. The above description is only one preferred example of the automatic cutting device according to the present invention, and there are many other aspects. For example, as shown in FIG. 7a, two cutters may be arranged on the upper side, and one cutter may be arranged on the lower side at the center position of the two cutters. In that case, as shown in FIG.
The product shown in can be obtained. Further, in the case where one cutter is arranged at each of the upper and lower opposed positions as shown in FIG. 8, the upper and lower sheets are extended beyond the length of the base material 2 by the amount of the spacer SS as shown in FIG. 8b. You can get things. Further, in this case, by preparing the heat-bonded portion 12 in which the base materials 2 are close to each other without using the spacer SS at the time of manufacturing the heat-bonded object 20, as shown in FIG. It will be easily understood that a sheet having the same area bonded to the entire front and back surfaces of the substrate 2 can be continuously obtained.

If the object to be cut is such that the sheet is adhered to only one of the front and back sides, the cutter may be arranged only above or below the object to be cut. It's good.

[0033]

According to the automatic cutting apparatus of the present invention, it is possible to easily and continuously cut the articles to be cut, which are continuously fed, into individual articles without stopping the movement thereof. Particularly, it is necessary to effectively use an object to be cut such that a long sheet is continuously adhered to the front surface or the back surface of a plurality of base materials to cut the sheet portion and separate it into individual products. it can.

[Brief description of drawings]

FIG. 1 is a side view with a partial cross-section showing a main part of an automatic cutting device according to the present invention.

FIG. 2 is a front view showing a main part of an automatic cutting device according to the present invention.

FIG. 3 is a cross-sectional view illustrating a cut state.

FIG. 4 is an explanatory view showing an apparatus for manufacturing a heat-bonded material, which is an example of an object to be cut.

FIG. 5 is a view showing a manufacturing state of a heat-bonded article which is an example of an object to be cut.

FIG. 6 is a view showing an example of a composite heat insulating material cut by an automatic cutting device according to the present invention.

FIG. 7 is a diagram illustrating another example of a disconnected state.

FIG. 8 is a view for explaining still another example of the cut state.

[Explanation of symbols]

AT ... automatic cutting device, 52 ... rail, 61 ... support base, 7
1a, 71b, 83 ... Air cylinders, 75a, 75b,
84 ... Rodless cylinder, 77a, 77b, 86 ... Cutter mounting plate, 90 ... Screw rod (reciprocating means of support base)

Claims (2)

[Claims] 1. A support base that reciprocates on a machine frame, a reciprocating means of the support base, and a support base mounted on the support base so as to be vertically movable and reciprocally movable in a direction different from the moving direction of the support base. A cutter, an object pressing means mounted on the support so as to be vertically movable with respect to the support, a sensor mounted on the support for detecting the presence of the object, and
A means for bringing the cutter into contact with an object to be cut that is moving together with the support base and moving the object in a direction different from the moving direction of the object to be cut, based on a signal from the sensor. Automatic cutting device for work pieces. 2. The automatic cutting apparatus according to claim 1, wherein the cutter is provided above and below the object to be cut, and the object can be cut on both front and back surfaces at the same time. apparatus.