JPH0192100A - Carpet tile cutter - Google Patents

Abstract

PURPOSE: To easily punch a carpet tile superposingly inserted into a gap between a pressure plate and an airtight chamber together with a cutter holding plate by installing this airtight chamber, being free of expansion or contraction through a pressure fluid, in an interval between a supporting plate, installed face-to-face with a backside of the cutter holding plate, and this plate. CONSTITUTION: A cutter holding plate 13 and a carpet tile 15 are superposed on each other, and inserted into a clearance L between an airtight chamber 17 in contractedness and a pressure plate 14. Next, air is pressed in the airtight chamber 17, inflating this chamber 17, and the cutter holding plate 13 and the carpet tile 15 are pushed up to a backside of the pressure plate 14 in keeping them superposed intact, and then the carpet tile 15 is rammed on the pressure plate 14, having a cutting edge 11 bitten into this carpet tile 15. Thus, the carpet tile 15 is punched by this cutting edge 11.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a method of laying carpet tiles of two different colors cut into a predetermined shape, further cut into a complicated shape and abutted to create a different color pattern. The present invention relates to a carpet tile cutting device used for carpet tile construction.

[Conventional technology]

Carpet tiles are made by coating the back of plain patterned tufted carpet or needle-punched carpet with a thick backing of bicemen or other low-lying resin composition, and cutting it into 50cm squares using a cutter at 50cm intervals in each direction. The surface is plain, but the floor can be made into a checkered pattern by layering several different colors alternately.

If you want to lay a slightly complex pattern on the floor, cut carpet tiles of different colors along the outline of the desired pattern, and then butt the different colored pieces together. There is.

[Problem that the invention seeks to solve]

When cutting carpet tiles along the outline of a pattern, first cut the back of the carpet tile.

The outline of the pattern is drawn on the surface and a cutter (Hirakata's knife) is inserted along the outline to cut it, but since this work is done by hand, it is inefficient and prone to cutting errors.

Then, with a mold cutter that shaped the pattern, 1JFVI was created! A method of punching out the carpet is being considered, but this requires a costly pressing device and cannot be easily carried out at the carpet construction site at the request of the customer.

Therefore, carpet tiles with complex contours have to be produced in factories, but since people have different tastes in patterns, when trying to sell carpet tiles, it is necessary to produce carpet tiles of many different shapes. We have to line up and meet demand.

However, as a practical matter, carpet tiles with complex contours like vines are not as popular as standard square carpet tiles, and in order to sell them, a large amount of inventory must be kept. In the end, the reality is that they have no choice but to be made manually at the construction site.

(Objective of the Invention) Therefore, an object of the present invention is to provide an apparatus that can easily and accurately punch out a desired pattern on a carpet tile at a carpet construction site.

[Structure of the invention]

The present invention achieves this object by punching and cutting a carpent tile 15 by pinching it between a cutter holding plate 13 and a pressure plate 14 on which a cutter 12 is attached with a cutting edge 11 protruding from the surface. In that case, a support plate 16 is provided opposite to the back surface of the cutter holding plate 13, and an expandable air is provided to expand the distance S between the cutter holding plate 13 and the support plate 16 by means of a fluid press-fitted between the cutter holding plate 13 and the support plate 16. A closed chamber 17 is provided, and the carpet tile 15 and cutter holding plate 13 are inserted in a stacked manner between the pressure plate 14 and the air-tight chamber 170 in a contracted state of the air-tight chamber 17 where no fluid is pressurized and the interval S is narrowed. A pressure plate 14 and a support 1 are placed above and below the airtight chamber 17 with a distance H that provides the required clearance.
16 to configure the carpet tile cutting device 18, so that the carpet tiles are cut not by the force applied from outside the device (external stress) but by the force generated inside the device (internal stress). It is characterized by the fact that

The airtight chamber 17 is composed of a holding plate 13 and a supporting plate 16 on the upper and lower sides, and their peripheral edges are joined by a strong flexible sheet 19 that is not breathable. In this case, the airtight chamber 17 can be formed by providing an injection port 20 for injecting liquid into a part of the airtight chamber 2.
It may be divided into 1A, 21B, 21G, . . . .

The airtight chamber 17 may also be formed by mounting a hose in a spiral shape on the support plate 16, or alternatively, a flexible hose (
A bag, vibrator, or hose 2 with an inlet 20 provided by 9
1 may be formed so as to be sandwiched between and in close contact with the upper and lower holding plates 13 and support plates 16, and on the surface of the airtight chamber 17 that comes into contact with the holding plates 13 and the support plates 16, there is a protection plate 2 that is in close contact with them.
2.23 may be provided.

Also, such a protection plate is the carpet tile 1 of the pressure plate 14.
It may also be provided on the surface that comes into contact with 5, in which case the protection panel 2
For the cutter 4, a soft sheet such as rubber or cardboard is used so that the cutter 12 does not damage the blade.

A preferred embodiment of the present invention is to provide spacers 25 at the four ends of the holding plate 13 and the pressure plate 14 facing each other so that the space between them does not become narrower than a predetermined distance. Carpet tiles 15 around 13
The abutting tool 26 that comes into contact with the periphery of the pressure plate 14 is provided with an elastic biasing barge so as to be retractable and protrude toward the pressure plate 14.

Hereinafter, the present invention will be specifically explained with reference to illustrated embodiments.

〔Example〕

The pressure plate 14 and the support plate 16 are made of steel sections 27 and 2, respectively.
It is made by welding steel plates 28 and 28'' to frames 29 and 29' with 7F welded together, and a rubber plate 24 with a thickness of about 4 fl is adhered to the back surface of the pressure plate 14.

The pressure plate 14 and the support plate 16 are joined at the four corners by bolts 30 with steps to receive the pressure plate 14 so that a gap of a certain distance H is created between them. This is a nut that is screwed onto the bolt 30.

A slightly thick iron plate 23 (approximately 9 cranes thick) is inserted into this gap H.

Large holes 32 approximately twice the thickness of the bolts 30 are bored in the four corners of the iron plate 23, and the bolts 30 are inserted into the holes. is inserted so that it can move up and down between the holding plate 13 and the pressure plate 14 while being guided by bolts 30 at the four corners, and can play back and forth and left and right.

Cylindrical metal spacers 25 of equal height (h) are protruded slightly inside the guard holes 32 at the four corners of the iron plate 23, and parallel to each other on the left and right sides slightly inside the portion surrounded by these spacers 25. Rails 33 and 33' facing each other are provided protrudingly.

Reference numeral 22 denotes a steel plate that is inserted between these rails 33 and 33' and stacked on the steel plate 23, and on the left and right edges thereof are sliders 35 and 3 that fit and slide on the rails 33 and 331.
5” is provided protrudingly.

Inward grooves facing upward and downward are provided on the top and bottom of the rail 33, while outward grooves are provided on the top and bottom of the slider 35, and a bearing 36 is provided between the grooves of the rail 33 and the groove of the slider 35. is installed. 47 is
This is a handle for taking the iron plate 22 in and out between the rails 33 and 33'.

The holding plate 13 is made of a 50C11 square flat plate, and its surface has several grooves 37, 371, 37", etc. corresponding to the contours of the punched patterns of several types of carpet tiles. A flexible belt-shaped cutter 12 is planted in a groove 37'' corresponding to the outline of a part of the required punching pattern, with the cutting edge 11 facing upward.

The holding plate 13 is installed on the iron plate 22 between the sliders 35 and 351.
is provided with several fitting protrusions 38 and fitting holes 39, so that the mounting position of the holding plate 13 can be determined by these.

Two arc-shaped notches 40 are attached to each line of the square holding plate 13 near the four corners, while the iron plate 22
A cylindrical holder 41 is protruded from the holding plate 13 at a position in close contact with the cutout 40.

The holder 41 has a built-in coil spring 42, and is elastically biased by the coil spring 42 so that the cylindrical abutment tool 26 protrudes from the upper end of the holder 41 so as to be retractable.

When the holding plate 13 installed on the iron plate 22 is viewed from above, these abutting tools 26 have 50
It is inscribed in a cm square square, and its upper end protrudes higher than the cutting edge 11.

The iron plate 22 is stacked on the iron plate 23, and the holding plate 13 is placed on the iron plate 22.
In the state in which the rail 33 and the holder 41 are installed, the heights of the rail 33 and the holder 41 are set so that they do not protrude higher than the spacer 25, and in this state, the abutment tool 26 is pushed into the holder 41 lower than the spacer 25. In this state, the height of the cutting edge 11 is lower than the spacer 25.

Reference numeral 48 designates a tile support member for horizontally supporting the carpet tile 15 on the blade edge 11, and a sponge having a thickness corresponding to the height of the blade edge 11 is used.

The airtight chamber 17 has two hoses 21 with a thickness (diameter) of about 18 cm, which are made of a cylindrical sheet with a fabric (cylindrical fabric) interlining and synthetic resin laminated on the front and back sides, and an iron plate 23 and a support plate 16.
They are arranged so as to be sandwiched between them, and their both ends are held and closed by closing members 44 and 44' connected by upper and lower screws 43, respectively, in a bag-like manner.

The closing members 44, 44' are provided with a penetrating inlet 20 communicating with the airtight chamber 17, to which a vibrator 45 connected to an air compressor (not shown) is connected.

[For production]

To explain the operation of the present invention together with the operating procedure of the cutting device 18 according to the embodiment, the holding plate 13 installed on the iron plate 22 has five
Place a 0cm square carpet tile 15.

At this time, the periphery of the carpet tile 15 abuts against the abutment tool 26 and is positioned so that it does not shift back and forth and left and right, and the back surface of the carpet tile 15 abuts against and is supported by the cutting edge 11.

Next, the iron plate 22, the holding plate 13, and the carpet tile 15
is inserted as it is between the iron plate 23 and the pressure plate 14, and air is injected from an air compressor to inflate the airtight chamber 17.

Then, the iron plate 28, the iron plate 22, the holding plate 13, and the car bearing tile 15 are pushed up to the back surface of the pressure plate 14 while remaining overlapped, and the abutment tool 26 is first applied to the pressure f1.
After that, the carpet tile 15 hits the pressure ff114 and is gradually pushed into the holder 14 by the reaction force from the pressure plate 14.Then, the carpet tile 15 hits the pressure ff114, and then the spacer 25 hits the pressure plate 14. The pressure is gradually increased between the pressure plate 14 and the cutting edge 11 until it hits,
Gradually, the cutting edge 11 digs deeply into the carpet tile 15 and is finally punched out.

After that, the air in the airtight chamber 17 is removed and contracted, thereby causing the iron plate 28 and the iron plate 22 that had been pushed up until then to
The holding plate 13 and the carpet tile 15 are lowered, the carpet tile 15 is pulled out together with the iron plate 22 from the space between the pressure plate 14 and the iron plate 28, and the cut tile pieces 46 are removed.
461 from above the holding plate 13.

Thus, -15 pieces of carpet tights L are cut.

During this process, when the cutting edge 11 is biting into the carpet tile 15, the temporary retaining plate 13 and the carpet tile 15 swing back and forth and left and right along with the iron plate 28 because the bolt 30 and the hole 32 are loosely fitted. Also, since the periphery of the carpet tile 15 is in contact with the abutting tool 26, the carpet tile 15 does not swing back and forth or left or right on the cutting edge 11, and therefore the tile pieces 46 and 46' are not moved by the cutter 1.
The cutting edge 11 of No. 2 cleanly punches out along the outline of the punching pattern set on the holding plate.

In this embodiment, air is used as the fluid pressurized into the airtight chamber 17, but the fluid may also be a liquid such as water or oil.

〔Effect of the invention〕

As mentioned above, the pressure applied to the holding plate 13 in order to make the cutting edge 1 bite into the carpet tile 15 is not applied from the outside, but inside the airtight chamber 17 that expands between the pressure plate 14 and the support plate 16. This is due to pressure.

The internal pressure of this airtight chamber 17 does not act concentratedly on a part of the pressure plate 14, support plate 16, or holding plate 13, but acts gradually and strongly on the entire surface thereof.

Therefore, there is no need to make the pressure plate 14, the support plate 16, etc. sturdy, and there is no need to make the pressure plate 14, the support plate 16, etc. sturdy. The holding plate 13 does not need to be elaborately made so that it can move up and down without wobbling; it is only necessary to make the holding plate 13 move up and down while riding on the airtight chamber 17. good.

In this way, the cutting device 18 according to the present invention differs from conventional general punching devices in that cutting stress is not applied to the cutting edge 11 from outside the device, but internal stress gradually generated inside the device is transmitted to the cutting edge 11. Since the carpet tile 15 and the blade edge 11 do not shift or move during the cutting process, the tile piece 46 is neatly cut along the outline of the desired pattern formed by the blade edge 11 without losing its shape. Moreover, the cutting device 18 is constructed to be light and compact so that it can be easily carried.
Therefore, it is possible to easily meet the client's request by creating the carpet tile pieces 46 with the desired outline at the carpet construction site and performing the butt construction.

Furthermore, when trying to sell carpet tile pieces 46 with such contours in stores, there is no need to manufacture and assemble many types of carpet tile pieces 46 with different contours in a factory, but to sell only a few types of punched pieces. Several grooves according to the outline of the pattern 3
It is possible to meet the demand by preparing a single support plate 13 with 7, 371, 37"... A tile piece 46 can be provided.

As described above, the present invention provides combination carpet tile pieces 4
It is convenient not only for the use of 6, but also for its production and sales.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of a carpet tile cutting device according to the present invention, FIG. 2 is a perspective view of the carpet tile cutting device according to the present invention in use, and FIG. 3 is a carpet tile cutting device according to the present invention. FIG. 3 is a partially enlarged sectional view of the device in use. 11...Blade tip, 12...Cutter, 1
3... Holding plate, 14... Pressure plate, 15.
...Carpet tile, 16...Support board, 17...
Airtight chamber, 18... Cutting device, 19... Sheet, 20... Inlet, 21... Hose, 22, 23, 24... Protection board, 25...
...Spacer, 26...Abutment tool, 27...
Shaped steel material, 28... Iron plate, 29... Frame,
30...Bolt, 31...Nando,
32...hole, 33...rail,
35...Slider, 36...Bearing,
37...Groove, 38...Protrusion, 39.
...Fitting hole, 40...notch, 41...
Holder, 42... Coil spring, 43... Screw, 44... Closing member, 45... Pipe,
46...Tile piece. Applicant Honey Steel Co., Ltd. Agent Patent Attorney (8189) Shigeo Chiba Figure 1

Claims (1)

[Scope of Claims] (a) A device for punching and cutting carpet tiles 15 by pinching them between a cutter holding plate 13 and a pressure plate 14 on which a cutter 12 is attached with a cutting edge 11 protruding from the surface; (b ) A support plate 16 is provided facing the back side of the cutter holding plate 13, and the cutter holding plate 13 and the support plate 1 are
(c) In the contracted state of the airtight chamber 17 where no fluid is pressurized and the interval S is narrowed, the pressure plate 14 and the airtight chamber 17, the pressure plate 14 and the support plate 16 are set above and below the airtight chamber 17 with a distance H that provides the necessary gap L for inserting the carpet tile 15 and the cutter holding plate 13 one on top of the other. A carpet tile cutting device characterized by;