JPH0212084B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for forming the edges of carpets laid side by side on a floor.

[Conventional technology and problems]

Carpet tiles are cut from a wide and long raw material to a specified size and laid in dense rows on the floor, allowing for partial replacement in the event of damage.
It has the advantage of being able to freely create patterns using colors and being easy to transport into buildings.
It has been widely adopted in recent years.

As shown in Fig. 5, the general cross-sectional structure of a tile carpet is as follows: piles 2 and loops are planted on a base fabric 1, this base fabric 1 is stacked and fixed on a carpet base material 3, and the base fabric is fixed. A backing material 4 is layered on the bottom surface of the carpet 3, and the carpet base material 3 is formed by mixing synthetic resin, rubber, coal tar, or any of these with various fillers.

The above-mentioned carpet tiles are cut from the original fabric into a predetermined size, such as 50 cm square, but at the cut end faces of the four peripheries, the end face and the pile 2
It is impossible to make the relationship constant.

That is, there are errors in the straightness and pitch of the pile 2, and the cutting direction of the pile 2 is not necessarily parallel to the cutting direction of the pile 2.

For this reason, the distance between the cut end surface and the outermost portion of the pile standing portion varies in the four peripheral edges.

For example, as shown in FIG. 5, when the distance between the cut end face and the outermost part of the pile becomes wide, the pile spacing at the abutting part becomes coarser than in other parts during laying.

The above-mentioned change in the density of the pile 2 will cause roughened areas to appear in the form of a line when it is laid, and if the pile at the end falls towards the inside of the tile carpet, a large gap will be created. The finished value at the time of installation is significantly reduced.

In order to increase the density of the pile at the butting part of the tile carpet, the carpet base material 3 is
However, as in the past, the cut end surface of the carpet base material 3 simply cut vertically has an extremely small shrinkage deformation rate, and the abutting end portion It is not possible to adjust the pile density to be close.

In addition, in tile carpets, as a means to increase the pile density at the butt portions, the cut end surface is made to be an inclined surface with the lower part facing inward, or an arcuate surface with a concave upper and lower center part, so that the butts are not stacked at the time of laying. A tile carpet that increased the shrinkage rate by making the parts thinner and thicker was developed in 1982.
104930.

However, in the structure described above, the thinned and thickened part continues along the entire length of the end face, so the shrinkage due to compression during collision occurs upward or both upward and downward. There is a problem in that the periphery of the carpet floats up when it is laid, which is a practical problem.

This invention was made in view of the above-mentioned points, and has good shrinkability of the edge of the carpet base material at the abutting part during laying, and improves the pile density at the abutting part without causing floating on the periphery. An object of the present invention is to provide a method for forming the edge of a carpet, which can make the edge of the carpet denser.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention forms the edge of the moved carpet into a continuous uneven surface using a heating mold, and immediately after forming the uneven surface, from the inside of the carpet to the outside. The edge of the carpet is pressurized in the thickness direction by a pressurizing body that rotates toward the carpet.

[Effect]

The edge of the carpet, which has been moved parallel to the edge, is formed into a continuous uneven surface using a heating mold, and immediately after forming the uneven surface, the edge of the carpet, which has accumulated heat due to the heating during forming, is A pressurizing body that rotates from the inside to the outside applies pressure in the thickness direction, correcting deformation in the thickness direction of the carpet base material when forming uneven surfaces, and at the same time shaping the pile located at the edge outward. It is something to attach.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 and 2 show the structure of an edge forming device, in which a circular plate 13 is provided around the upper end of a hollow shaft 12 vertically supported by a bearing 11, and a gear 14 provided at the bottom of the hollow shaft 12. Drive machine (not shown)
In conjunction with this, rotation is applied in the direction of arrow A in FIG.

The circular plate 13 has an annular wall 15 on its upper outer periphery.
A heat insulating material 16, a heater mounting plate 17, a ring-shaped heating mold 18, a heat insulating material 19, and an upper pressure plate 20 are stacked on this circular plate 13 in order from the bottom. The overlapping portions are elastically connected by a plurality of through bolts 21 and springs 22, so that they can rotate together, and are housed in the heating mold 18 on the heater mounting plate 17, and the molding A heater 23 is attached to heat the mold 18.

The upper surface of the annular wall 15 in the circular plate 13 and the upper surface of the heater mounting plate 17 and the outer periphery of the heat insulating material 16 are on the same plane, and the heating mold 18 is located on the heater mounting plate 17 and has the same diameter as the heater mounting plate 17. A molded tooth profile 18a is provided on the outer peripheral surface having a smaller diameter than that. A pressure plate 20 that overlaps the heating mold 18 via a ring-shaped heat insulating material 19 and serves as a pressurizing body for the carpet is a circular plate 13.
The annular wall 1 is provided with an outer diameter equal to
An annular wall 24 facing the upper and lower annular walls 15 and 24 is provided to form a resilient clamping interval 25 for the carpet between the opposing surfaces of the upper and lower annular walls 15 and 24.

When the carpet is fed into the clamping gap 25, when the circular plate 13 rotates in the direction of arrow A in FIG.
The end edge of the carpet base material 3 is formed into an uneven surface 5 by the forming tooth profile 18a heated by the heater 23.

Incidentally, it is preferable to provide a suitable guide or a feeding mechanism so that the carpet comes into pressure contact with the molded tooth profile 18a by a predetermined amount and moves linearly to a fixed position.

Various shapes can be adopted for the uneven surface 5 provided on the base material 3, and the shape of the tip of the molded tooth profile 18a may be selected.

The small convex portions 5a forming the uneven surface 5 are formed so that their tips are narrower than their bases and contract when pressed parallel to the surface, and the first example shown in FIG. 3 is a hemispherical shape. The second example shown in FIG. 4 shows a triangular shape.

As described above, when the small protrusions 5a are juxtaposed and protruded in the longitudinal direction of the end surface of the base material 3 so as to form a recess between adjacent small protrusions 5a, the small protrusions 5a and the recesses alternate in the longitudinal direction of the end surface. It becomes a finely uneven surface lined up with .

The uneven shape of the uneven surface 5 may be arranged regularly or irregularly, and the cutting depth of the recessed part of the uneven surface 5 is such that it reaches the outermost part of the pile about 1 mm to 2 mm from the end surface. The molded tooth profile 18a is set so that.

By the way, when the edge of the carpet base material 3 is deformed into the uneven surface 5 by heating and pressing with the molded tooth profile 18a, the material in the portion corresponding to the concave portion escapes to the top and bottom of the base material 3, as shown in FIG. For example, a raised portion 6 will be generated above the base material 3, but in this invention, immediately after the uneven surface 5 is formed by the molded tooth profile 18a, the carpet is pressurized from above and below by the upper and lower annular walls 15 and 24. As shown in FIG. 7, the raised portion 6 can be modified.

That is, the upper and lower annular walls 15, 24 have a molded tooth profile 18a.
As shown in Fig. 2, as shown in Fig. 2, it rotates relative to the moving carpet from the position immediately before forming the uneven surface 5, passing through the inside of the forming part and leaving at the position immediately after forming. Since the base material 3 that stores the heat of the molded tooth profile 18a is pressurized from above and below, the raised portion 6 can be efficiently corrected into a flat shape.

In addition, when modifying the raised portion 6, the annular wall 1
5 and 24 rotate from the inside to the outside with respect to the carpet, as shown in FIG.
As a result, the pile 2 is tilted toward the edge of the base material 3 as shown in FIG. 7, which prevents collisions when laying carpet tiles. It is possible to improve the pile density of the parts and make the abutting parts less noticeable.

Although an example is shown in which an annular groove 26 is provided in the annular wall 24 of the pressure plate 20 in the middle and the raised portion 6 is corrected in two stages, the number of the annular grooves 26 is not limited to this. .

The molding method of the present invention is carried out using the molding apparatus as described above, in which the heater 23 and the drive machine are energized to rotate the circular plate 13, and the heating mold 18 is heated to form a predetermined size. The edge of the cut tile carpet is fed between the circular plate 13 and the pressure plate 20, and the carpet is moved parallel to the edge.

The carpet advances while being sandwiched between the upper and lower annular walls 15 and 24, and the base material is formed into an uneven surface 5 by the heat forming tooth profile 18a, and the annular walls 15, 24
Then, the raised portion 6 is corrected and the pile 2 is shaped outward, and by repeating the above processing on each edge, a tile carpet with uneven surfaces 5 on the four peripheries is created. is completed.

During the installation of carpet tiles, when the abutting edges are pressed against each other in the plane direction, the pressed uneven surfaces 5 deform each other, and the ends of the carpet base material 3 contract due to their flexibility. do.

In other words, the uneven surface 5 is not intended to bring adjacent tile carpets closer together by fitting the uneven shapes, but rather to make small protrusions 5a on the uneven surface 5.
However, the existence of the adjacent recesses adds a large deformation function, and when the small projections 5a are brought into contact, the small projections 5a are compressed and deformed into recesses, thereby shrinking the end portions of the base material 3.

Therefore, when the tile carpet is laid by pressing it in the plane direction, the outermost piles 2 approach each other due to the shrinkage of the ends of the base material 3, as shown in FIG. The density of becomes denser,
The entire surface of the laid carpet tiles will be finished in the state of being laid in one piece.

〔effect〕

As described above, according to the present invention, an uneven surface can be automatically formed on the edge of a carpet, and the shrinkage and deformation of the small protrusions and escape to the adjacent recesses cause the shrinkage of the end face of the tile base material. By pressing the edges together during installation, the planar dimension of the edge portion is reduced, allowing for efficient carpet manufacturing, which allows the pile density to be increased even at the surrounding butt portions. Ru.

In addition, immediately after forming the uneven surface, the edge of the carpet is pressurized in the thickness direction with a pressurizing body that rotates from the inside toward the outside, so it is possible to correct the bulges that occur when forming the uneven surface, and also to reduce the pile. It is possible to form a carpet that is tilted outward, and when it is laid, the pile density at the abutting portion becomes dense, making it possible to produce a carpet with a high commercial value that has a finish similar to that of a single piece.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of the molding apparatus used in the molding method of the present invention, FIG. 2 is a cross-sectional plan view of the same, FIGS. The figure is a vertical cross-sectional view showing the structure of the carpet.
6 and 7 are longitudinal cross-sectional views showing the order in which the carpet is formed. 1 is a base fabric, 2 is a pile, 3 is a base material, 4 is a backing material, 5 is an uneven surface, 13 is a circular plate, 15 is an annular wall, 18 is a thermoforming mold, 18a is a molding tooth profile, 2
0 is a pressure plate, 23 is a heater, and 24 is an annular wall.

Claims (1)

[Claims] 1 The edge of the moved carpet is formed into a continuous uneven surface using a heating mold, and immediately after forming the uneven surface, the edge of the carpet is shaped with a pressure body that rotates from the inside of the carpet toward the outside. A carpet edge forming method that applies pressure in the thickness direction.