JPH0790496B2 - Sheet cutting device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a sheet cutting apparatus that cuts a long sheet into a predetermined length to manufacture a veneer product having a constant shape.

(Prior Art) A long sheet is rolled into a sheet having a desired length and shape (hereinafter simply referred to as a "single plate product") according to its application while rewinding in a cutting process. It is generally cut. FIG. 8 to FIG. 9 are plan views of a single plate product which is an example thereof, and the shape thereof is one obliquely cut as shown in FIG. 8 (hereinafter simply referred to as “beveled product”), or As shown in FIG. 9, there is a sheet cut at a right angle to the longitudinal direction of the sheet (hereinafter simply referred to as “right-angled article”). Examples of such a single plate include a polarizing plate coated with a pressure-sensitive adhesive surface protective film having a slight adhesive property, a synthetic resin plate, a substrate such as an aluminum name plate, and the like.

And, as the cutting method of the single plate product, a method of punching a continuously supplied long sheet by a press machine, or a predetermined shape of the single plate product by hand, a shape close to a size, a cutting sheet of a size There is known a method in which after cutting once, a large number of the cut sheets are stacked and cut and finished into a predetermined shape and size of a single plate product by a cutting machine.

(Problems to be Solved by the Invention) However, of the above-mentioned conventional techniques, the former method of punching a long sheet with a press machine is a punching blade having a predetermined shape and size corresponding to a single plate product to be cut. A die must be prepared and this blade die must be replaced for each different shape and size of the veneer product. When cutting veneer products of various shapes and sizes, it is necessary to manufacture a large number of blade molds according to the types, not only the blade mold manufacturing cost but also the inventory management of blade molds is complicated. Becomes Further, in the blade die replacement work, there is a problem that the attachment adjustment work takes time and the work is troublesome.

Further, of the above-mentioned conventional techniques, the latter method in which a large number of cut sheets are stacked and cut and finished by a cutting machine has a limited cutting ability in the step of obtaining cut sheets and requires a large number of personnel. Further, when a cut sheet that has been cut manually is finally cut and finished into a final veneer product, the peripheral portion of the sheet is cut and removed, resulting in a product loss.

Furthermore, if the long sheet is made of a flexible material, it cannot be cut at an accurate angle, and the cut product cannot be discharged sufficiently, causing the cut end to sag and catch, or the short length of a beveled product. In the case of a cut product, there was a problem that it fell off.

The present invention has been made in order to solve the above problems, and its object is to cut a long sheet to obtain a right-angled product or a beveled single plate product, and The cutting angle with respect to the direction can be changed easily and accurately in an extremely short time. Especially when cutting a long sheet made of a flexible material, it is possible to cut at an accurate angle, and the discharge of the cut product is stable. It is an object of the present invention to provide a sheet cutting apparatus that does not have a problem that the cutting end portion is drooped and caught and is dropped even in the case of a short beveled product.

(Means for Solving the Problems) A sheet cutting device of the present invention includes a cutting machine main body for cutting a long sheet in the width direction, a turntable on which the cutting machine main body is placed and rotated, and the cutting machine main body. In a cutting device equipped with a sheet feeding unit and a transfer device provided with a sheet discharging unit at the front and rear, the sheet feeding unit is composed of a plurality of driving belts that move in synchronization with each other in parallel with the sheet conveying direction, and a cutting blade in a turntable. The long sheet is driven and conveyed to the vicinity of the sheet, and the sheet discharge part is composed of a plurality of drive belts that move in synchronization in parallel with the sheet conveying direction. Is configured to be driven and transported to the outside of the turntable.

(Operation) In the sheet cutting apparatus of the present invention having the above-described configuration, when changing the cutting angle of the long sheet with respect to the longitudinal direction, when the turntable is rotated, the cutting machine body is also rotated on the horizontal plane at the same time. The cutting angle can be easily set.

Further, since the sheet feeding section is composed of a plurality of drive belts that are synchronously moving in parallel with the sheet conveying direction and conveys the sheet to the vicinity of the cutting blade in the turntable, the long sheet is a flexible material. Even if the sheet is conveyed, the sheet is accurately conveyed without any angular deviation. Therefore, an accurate cutting angle can be obtained.

Further, the sheet discharging unit is composed of a plurality of driving belts which are synchronously moving in parallel with the sheet conveying direction, and the long sheet is driven and conveyed to the outside of the turntable from the vicinity of the cutting blade in the turntable. Stable discharge even if the cut product is short. Therefore, the cut end does not hang down and get caught, and does not fall even in the case of a short cut product of a beveled product.

(Example) Next, one example of the sheet cutting apparatus of the present invention will be described with reference to the drawings.

In FIG. 1, 1 is a long sheet, and as shown in an enlarged view in FIG. 7, a flexible substrate 2 such as a polarizing plate is attached to a separate pressure-sensitive adhesive sheet 1a with a slight space c. There is. The substrate 2 has an upper surface coated with a surface protective film 2a, and is a beveled product as shown in FIG. 8 or a right product as shown in FIG.

3 is a cutting machine body having an upper blade 31 and a pair of lower blades 32, 32. The upper blade 31 is attached to an upper support frame 33,
32, 32 are attached to the lower support frames 34, 34.

Reference numeral 35 is an arch-shaped mount that constitutes the cutting machine body 3,
As shown in FIG. 3, columns 352 and 352 have slide shafts 353 and 353 on both sides of a base plate 351 provided with slits a.
Along with the pillars, they are erected at predetermined intervals.
The upper ends of 2, 352 and slide shafts 353, 353 are connected and fixed by an upper frame 355. Slide bearings 354 and 354 are slidably mounted on the slide shafts 353 and 353, respectively.

An air cylinder 36 is provided substantially in the center of the upper frame 355 of the arch-shaped mount 35 with the piston rod 361 facing downward. Upper support frame with upper blade 31 attached
33 is a connecting member 362 and a connecting pin 363 on the piston rod 361.
Both ends are slide bearings
It is fixed to 354,354.

The lower support frames 34, 34 are mounted and fixed on the base plate 351 of the mount 35 so that the lower blades 32, 32 face each other and have a predetermined cutting gap b. The cutting gap b is set to a dimension such that the upper blade 31 can be inserted while sliding on the respective blade surfaces of the lower blades 32, 32.

Reference numeral 4 is a turntable on which the cutting machine body 3 is placed. As shown in FIGS. 2 to 3, an elongated table plate 41 and leg plates 42, 4 are provided.
2 and side plates 43, 43, leg plates 42, 42 are provided on the short side of the table plate 41, side plates 43, 43 are provided on the long side, and wheels 44, 44 are attached to the lower ends of the leg plates 42, 42, respectively. Become. Table board 41
Is provided with a slit-shaped opening 411 in the longitudinal direction, and the opening 411 and the base plate 351 of the cutting machine body 3 are provided.
The cutting machine main body 3 is placed on the table plate 41 so that the slit portions a of the same are aligned.

Further, below the opening 411 of the table plate 41, the belt conveyor 6 traveling in the arrow s direction is attached to the side plates 43, 43.

Reference numeral 5 denotes a base in which a drive unit 7 for rotating the turntable 4 is incorporated, and includes a machine frame 51 that is substantially square when viewed from the top and a base plate 52 provided on the top, as shown in FIG.

As shown in FIG. 3, a vertical rotary shaft 71 for rotating the turntable 4 on a horizontal plane is provided at substantially the center of the base 5 via thrust bearings 72, 73. The rotating shaft 71
Are rotated in the forward and reverse directions by a motor with reduction gear 76 via gears 74 and 75.

A transfer device 8 is composed of a plurality of endless narrow belts 81 arranged in front of and behind the cutting machine body 3 (first
A sheet supply unit 82 and a sheet discharge unit 83 are formed on the left and right in the drawing. The narrow belt 81 is a base 821 of the sheet supply unit 82.
Pulleys 822 and 823 installed on the pedestal 8 and the pedestal 8 of the sheet discharge unit 83
It is stretched by pulleys 832 and 833 provided on 31.

Reference numeral 9 is a belt guiding device, and as shown in FIGS. 4 and 5, a frame base 91 and a pair of fixed wheels provided below both sides of the frame base 91.
The narrow belt 81 stretched above is once circumvented downward between the sheet feeding portion 82 and the sheet discharging portion 83.

The frame base 91 of the belt guiding device 9 is formed by raising pulley support frames 912 and 913 from both ends of a lower frame 911, respectively.
94 is attached, and pulleys 95, 96 are attached to the pulley support frame 913.
Are installed respectively.

As shown in FIGS. 1 and 3, the belt guiding device 9 has a lower frame 911 located below the belt conveyor 6 installed below the turntable 4,
The pulley supporting frame 912 and the pulley supporting frame 913 are installed on the base plate 52 of the base 5 so as to project above the side surface of the turntable 4 so that the pulley supporting frame 912 and the pulley supporting frame 913 are on the sheet supplying portion 82 side and the sheet discharging portion 83 side, respectively. .

The belt guiding device 9 installed on the base plate 5 has a transfer device 8
By sequentially passing the narrow belt 81 through the pulleys 93, 94, 95, 96 of the frame base 91, it is possible to detour downward between the sheet supply unit 82 and the sheet supply unit 83.

By bypassing the narrow belt 81 of the transfer device 8, the narrow belt 81 can be stretched without any trouble even if the cutting machine body 3 is placed between the sheet supply portion 82 and the sheet discharge portion 83.

A guide rail 10 is arranged on the base plate 52 of the base 5 along the transfer direction of the transfer device 8 and restricts the fixed wheels 92, 92 of the belt guide device 9 in a fixed direction.

A plurality of the belt guiding devices 9 and the guide rails 10 are installed in parallel on the base 5 in correspondence with the number of rows of the narrow belts 81 of the transfer device 8. In the embodiment of the present invention, since the narrow belt 81 has four rows, four belt guiding devices 9 are installed in parallel.

A plurality of belt guiding devices 9 arranged in parallel in this way
As shown in FIGS. 4 and 6, each of the belt guiding devices 9 ... In the groove portion of the guide bar 11 having a groove-shaped cross section.
Pins 97 ... Protruding on the lower frame 911 are slidably mounted and movably connected.

Both ends of the guide bar 11 are fixed to the leg plates 42, 42 of the turntable 4 as shown in FIG. 3, and rotate together with the turntable 4.

12 is a feed roll with a measuring device for supplying the long sheet 1,
Reference numeral 13 is a slitter roll that cuts both ears 1a, 1a of the long sheet 1, and is driven together with the transfer device 8 by an electric motor 14 via a speed reducer 15 and transmission chains 16, 17, 18. There is.

Further, 19 is a sheet clamp device provided near the cutting machine body 3 of the sheet supply unit 82, and 20 is a photoelectric sensor.

Next, a method of using an embodiment of the sheet cutting device of the present invention will be described.

First, when cutting a right angle product as shown in FIG.
As shown in FIG. 2 and FIG. 2, the cutting machine body 3 is a long sheet 1.
It is set at a right angle to the running direction of.

Both ears 1b, 1b of the long sheet 1 are slit by a slitter roll 13 and taken up by a winder (not shown), and the slit long sheet 1 is fed by a metering feed roll 12 to a sheet feeding section 82 of the transfer device 8. Is supplied to.

The long sheet 1 is supplied to the cutting machine body 3 while being placed on the sheet supply section 82, and the upper blade 31 and the lower blade of the cutting machine body 3 are supplied.
After passing between 32 and 32, the sheet is transferred to the sheet discharge portion 83 side. The length of the long sheet 1 is always the feed roll with weighing 12
When a predetermined length is detected, the air cylinder 36 of the cutting machine main body 1 operates and the upper blade 31 descends. The long sheet 1 is cut by the upper blade 31 and the lower blades 32. At this time, cutting chips are generated by the cutting gap b between the lower blades 32, 32, and the cutting chips pass through the slit portion a of the base plate 351 and the opening 411 of the turntable 4 and fall onto the belt conveyor 6. , And is discharged to the outside of the machine by the belt conveyor 6.

The right-angled product cut by the cutting machine body 3 is the sheet discharge unit 83
Emitted from.

Next, as shown in FIG. 8, a substrate 2 such as a polarizing plate having a cutting angle θ of 35 ° for a beveled product is attached to a long separate pressure-sensitive adhesive sheet with a slight space c as shown in FIG. A case where the attached sheet is used as the long sheet 1 and cut into the same shape and size as the substrate 2 will be described.

First, when the drive unit 7 is started and the turntable 4 is rotated by (90 ° -θ) from the above-described cut state of the right-angled product as indicated by a two-dot chain line B in FIG. Is set at an angle of θ = 35 ° with respect to the running direction of the long sheet 1. At this time, as the turntable 4 rotates, the guide bar 11 also rotates in the direction of the arrow around the point P as shown in FIG. 6, so that the four rows of belt guiding devices 9 ...
, And the pulleys 96 are kept constant and are moved back and forth along the traveling direction of the transfer device 8.

If a plurality of narrow belts 81 ... And a plurality of movable belt guiding devices 9 ...
Since the 82 and the sheet discharging section 83 can be used in a state in which they are set close to the cutting machine body 3, the long sheet 1 can be fed from the sheet feeding section 82 to the cutting machine body 3 or the cutting machine body 3 When the sheet is discharged from the sheet to the sheet discharge portion 83, the cut end of the long sheet 1 hangs down or is caught, or
It is convenient to use it for a flexible long sheet 1 etc., since it does not fall off in the case of a beveled short product.

When the cutting direction of the cutting machine body 3 is set as described above,
The long sheet 1 is fed into the sheet feeding unit as the above-mentioned right-angled product is obtained.
It is supplied to the cutting machine body 3 by 82. In the supplied long sheet 1, the photoelectric sensor 20 detects the gap c between the substrates 2 and 2, and stops at the position of the slit gap b of the lower blades 32.
In this state, while operating the sheet clamp 19 to hold down the long sheet 1, the air cylinder 36 of the cutting machine body 1 is operated to lower the upper blade 31 and cut. Cutting scraps are generated by the cutting gap b between the lower blades 32, 32, and the cutting scraps are formed in the slit portion of the base plate 351 and the opening portion 411 of the turntable 4.
To the outside of the machine by the belt conveyor 6.

The beveled product cut by the cutting machine body 3 is the sheet discharge unit 83.
Emitted from.

As described above, the long sheet 21 is cut by the sheet cutting device of the present invention.
It is possible to cut right angle products and inclined products.

In the above embodiment, the transfer device 8 is the sheet supply unit 82.
The narrow belt 82 is continuously connected via the belt guiding device 9 between the sheet discharging unit 83 and the sheet discharging unit 83, but the invention is not particularly limited to this. For example, a hard sheet is cut into a considerably long length. Sheet supply unit 82 and sheet discharge unit
83 and 83 may be independent transfer devices such as roller conveyors. In this case, the distance between the sheet discharging units needs to be set wide in advance so that the cutting machine body 3 does not get caught in the way when the direction is changed.

Further, the upper blade 31 is slidably inserted into the cutting interval b formed by the pair of lower blades 32, 32, but the invention is not limited to this, and the lower blades 32, 32 One of the lower blades 32 may be removed and used. In this case, the belt conveyor 6 may be omitted since no cutting waste is generated by cutting.

(Effects of the Invention) The sheet cutting apparatus of the present invention includes a cutting machine body for cutting a long sheet in the width direction, a turntable on which the cutting machine body is placed and rotated, and sheet feeding before and after the cutting machine body. Section and a transfer device with a sheet discharge section, and the sheet supply section consists of multiple drive belts that move in synchronism with the sheet conveyance direction. The sheet discharging section is composed of a plurality of driving belts that are configured to be conveyed and that move in synchronization in parallel with the sheet conveying direction, and the cutting end piece is driven and conveyed to the outside of the turntable from the vicinity of the cutting blade in the turntable. Since it is characterized by being configured as described above, it is not necessary to prepare many types of blade dies when cutting a long sheet to obtain a right-angled product or an angled product of a single plate, Cost of production Moreover, inventory management of the blade type does not become complicated, the cutting angle of the long sheet with respect to the longitudinal direction can be changed easily and accurately in an extremely short time, and particularly, the long sheet is made of a flexible material. Even if it is a thing, it can be cut at an accurate cutting angle, and even if the cutting end piece is short, it is discharged stably, so the cutting end part hangs and is caught, It is an efficient device that has the effect that it can be cut without falling.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of the sheet cutting apparatus of the present invention, FIG.
The same drawing is a plan view, FIG. 3 is a sectional view taken along the line III-III of FIG. 1 and seen in the direction of the arrow, FIG. 4 is a front view showing a part of the belt guiding device, and FIG. 5 is FIG. 6 is a cross-sectional view taken along line V-V of FIG. 6 and viewed in the direction of the arrow, FIG. 6 is a schematic plan view showing the moving state of the belt guiding device, and FIG. 7 is an example of a long sheet used in the sheet cutting device of the present invention. Enlarged sectional view showing
FIG. 8 is a plan view of a beveled product obtained by the sheet cutting apparatus of the present invention, and FIG. 9 is a plan view of a right-angled product. Explanation of reference numerals 1 ... long sheet, 3 ... cutting machine body, 4 ... turntable, 5 ... base, 6 ... belt conveyor, 8 ... transport device, 9 ... belt guiding device, 10 ... … Guide rails

Claims (1)

[Claims] 1. A cutting machine body for cutting a long sheet in the width direction, and a turntable on which the cutting machine body is mounted and rotated.
In a cutting device provided with a sheet feeding unit and a transporting unit provided with a discharging unit before and after the cutting machine body, the sheet feeding unit is composed of a plurality of synchronously driving belts parallel to the sheet conveying direction, The long sheet is driven and conveyed to the vicinity of the cutting blade in the table, and the sheet discharge section is composed of a plurality of drive belts that move in synchronization in parallel with the sheet conveying direction. A sheet cutting device, characterized in that a cut end piece is driven and conveyed to the outside of a turntable from the vicinity.