EP3606385A1

EP3606385A1 - Method and device for manufacturing fitted bedsheets

Info

Publication number: EP3606385A1
Application number: EP18726314.0A
Authority: EP
Inventors: Peter Reinders
Original assignee: Schmale Holding GmbH and Co
Current assignee: Schmale Holding GmbH and Co
Priority date: 2017-06-21
Filing date: 2018-05-09
Publication date: 2020-02-12
Anticipated expiration: 2038-05-09
Also published as: BR112019023647A2; US11180880B2; PT3606385T; US20210115609A1; JP2020524752A; CN110891463B; KR20200019675A; ES2850880T3; JP6961017B2; CA3065124C; CN110891463A; KR102294944B1; CA3065124A1; WO2018233751A1; DE102017113666A1; BR112019023647B1; PL3606385T3; EP3606385B1

Abstract

The invention relates to a method for manufacturing fitted bedsheets, in which: rectangular sheet pieces (9) are cut; each corner (1,5) of the sheet pieces (9) is folded in on itself, the portions that are folded in on themselves are joined by a seam at a distance from the tip of the corner (1,5) of the sheet piece; and the tip projecting beyond the seam is cut off, forming a rectangular-shaped sheet piece (11), wherein the sheet piece (9) is held at each corner (1,5) at two holding points (2, 3; 6, 7), the first holding point (2; 6) on the first peripheral edge (13,13') is moved parallel to a plane covered by the sheet piece to the second holding point (3; 7) on the second peripheral edge (14,14'), together with the associated portion of the sheet piece (9); and the holding points (2 ',3; 6', 7) are held one on top of the other and a sheet flap in the shape of a right-angled triangle is formed, said sheet flap being provided with the seam (18) along the second leg (17) of the triangle then being cut off next to the seam (18) following the line of the latter.

Description

METHOD AND DEVICE FOR MANUFACTURING SPAN WINDOWS

The invention relates to a process for the production of fitted sheets or the like, in which rectangular pieces of cloth are cut from a piece of stock, each corner of the pieces of cloth placed on each other, with distance from the top of the corner of the piece of cloth, the superimposed areas are connected by a seam and over the seam projecting tip is severed, so that a cuboid-like cover or piece of cloth is formed.

From DE 35 42 445 Cl is a corresponding

Known method. For example like from the

given document known rectangular pieces of cloth are cut from a piece of web, the pieces of cloth can be provided with longitudinal seams and transverse edges. Essential for the formation of a parallelepiped cover or piece of cloth is that according to the prior art, the formation of the

Corner, which is essential for the formation of the cuboidal cover or the like, can only be performed manually. In the prior art, this is the piece of cloth from the

Manually removed manufacturing device for the piece of cloth. The piece of fabric is then folded diagonally around each corner so that the adjacent edges of the fabric are flush. Then, along an imaginary line becomes a joint seam

made and then the folded

Cloth section next to the seam of the cloth piece cut off. If at all four corners of the

Tuchstücks this work is completed, the cuboid cloth piece is completed.

This process is according to the prior art only manually executable, so the time to

Completion of the fitted sheet or the like is dependent on the work of the manual person. The accuracy of the production of the corner regions, which are preferably to form an exactly vertical edge, is of the

Dexterity of the Manual Person Dependent The fact that this procedure can only be carried out manually is essentially because each piece of cloth at the corner must be folded diagonally, which means that part of the piece of cloth in the corner area has turned upwards from a horizontal plane must be to the appropriate

To make cloth envelope in the corner. Such

Procedure is machine or respectively

automatically practically impossible.

Based on this prior art, the invention is based on the object, a method

generic type to create in which a precise, accurate and mechanically executable training of the corner areas is possible.

To solve this problem, the invention proposes that

- The piece of cloth in each case in the area of a corner near both edges forming the corner at a distance from the corner of the web height of the forming parallelepiped-like cover or cloth, is held at two breakpoints,

- The first breakpoint at the first edge

is moved parallel to the plane spanned by the piece of cloth, the second breakpoint at the second peripheral edge with entrainment of the corresponding portion of the piece of cloth,

- Both breakpoints are held one above the other and thus a Tuchzipfel is formed in the form of a right triangle, the hypotenuse opposite tip is formed by the breakpoints, the first catheter a

Extension of the second peripheral edge of the cloth piece forms and whose second catheter forms the region of the seam to be attached and the separation point,

- the cloth tip is provided along the second catheter with the seam and next to it separated along the seam,

- The so finished piece of cloth to the

Breakpoints is released.

This procedure makes it possible in a simple manner to perform the corresponding procedures by machine, since the movements easy

are manageable and easy to machine

Means are executable. According to the invention, the piece of fabric is held in each case in the region of a corner near the two edges forming the corner at a distance from the top of the corner, which corresponds to the web height of the cuboid-like cover or the like to be formed, at two breakpoints. The

Web height later determines the height of the vertical edge of the cuboid cover. By the

Breakpoints is a fixation of the piece of cloth in reached the corresponding area. In this case, to generate the corresponding corner region, the first breakpoint, which is located at the first peripheral edge

is, parallel to the plane spanned by the cloth piece shifted to the second breakpoint, which is located at the second peripheral edge of the piece of cloth. The corresponding area of the cloth piece is taken along, so that then the two

Breakpoints are held one above the other and thus a Tuchzipfel is formed in the form of a right triangle. The hypotenuse of this triangle is opposite the apex formed by the breakpoints. The first catheter of the triangle forms an extension of the second edge of the

Piece of cloth, while the second catheter, the

directed at right angles to the first catheter, forming the region of the suture to be applied and separation point. Subsequently, the cloth tip along the second catheter is provided with the seam and separated next to the seam, so that the seam is retained, the

Cloth tip but separated. Subsequently, the finished piece of cloth can be released at the breakpoints. The corresponding corner region is then formed in such a form that upon completion of all four corner regions a cuboidal reference has been created. The special advantage of this

The procedure is that for the formation of the corner region or the Tuchzipfels no turning over of the cloth piece is required, which is automatically practically impossible or is difficult to control, but located in the region of the cloth flap areas of the cloth piece by shifting the breakpoints

superimposed, so an exact and also machine-executable manufacturing method is enabled.

It is preferably provided that two front corner regions of the cloth piece are processed simultaneously.

Furthermore, it is preferably provided that two rear corner regions of the cloth piece are processed simultaneously.

For these embodiments are of course at both corners (front corner areas

or rear corner regions) in the formation of the corresponding cloth tabs the corresponding procedures on both elements required, which may optionally be done simultaneously. The procedure can also be carried out such that initially in a corner region a corresponding cloth tip is formed, sewn and cut and while sewing and cutting already the formation of the cloth tip is begun at a further corner region. It is thus an overlaying

Processing the cloth piece realized, whereby the time required for the overall production is reduced.

It can also be provided that the front and rear corner areas are processed simultaneously.

It is particularly preferred that the

Method and the individual method steps by means of mechanical, automatic, electrical, pneumatic and / or electronically controlled devices is operated. In this case, it is particularly preferably provided that by means of the devices only movements are carried out vertically to the plane of the opened towel piece and parallel to it.

By this procedure, it is possible to use relatively simple devices that are easy to control, because only vertical and horizontal to form the corresponding cover

Movements are required. Contrary to the state of the art, it is not necessary to turn over cloth areas and thus a necessary effort.

This facilitates the overall procedure and allows the procedure to be performed by machine.

In the state of the invention, a device for the production of fitted sheets or dergleiche protective covers is also known, which are formed from a cut web to a cuboid-like coating, with a transport device for transporting individualized pieces of cloth in a planar orientation.

Such a device is known for example from DE 35 42 445 Cl.

Thus, the corner portions of the cloth piece can be generated by machine, the invention provides that in each case in the region of a corner of the cloth piece near the two edges forming the corner at a distance from the corner of the web height of

forming cuboidal cover or cloth

corresponds, mechanical gripping means are arranged, the fix in a closed position holding points of the piece of cloth and release in an open position that a first of these gripping means directed only in a direction vertical to the plane of the piece of cloth

Direction especially for opening and closing or adjustable in the closed state is that a second of these gripping means for opening and closing is also adjustable and preferably also in the closed state vertically adjustable to a position in which the gripping means above or below the plane of the cloth piece are shifted horizontally, or this is pivotable about a vertical axis and that from the normal position or the vertically adjusted position to a working position in which the second gripping means above or below the first

Gripping means is positioned so that a tip of the cloth piece is formed, which projects beyond a longitudinal edge of the piece of cloth,

that a sewing device is arranged, by means of which a seam along the longitudinal edge over which the tip protrudes, can be generated, and a

Cutting device by means of which the over the seam projecting tip is separable.

According to this embodiment are corresponding

Gripping means arranged, which can be positioned in an open position and fix the corresponding breakpoints of the cloth piece in a closing position. A first of these gripping means is only directed in a direction vertical to the plane of the piece of cloth

Direction of opening and closing adjustable so that this only serves to fix the piece of cloth in a defined breakpoint, which may be marked, for example.

The second of these gripping means is also to

determined, in an open position over the

preferably marked breakpoint of the piece of cloth to be positioned and then in the

Closed position to be transferred. In this

Closed position, the second gripping means can be adjusted vertically in an intermediate position in which the gripping means above or below the plane of the

Towel pieces are relocated. In accordance with vertically adjusted position of this gripping means, this can be adjusted horizontally or, for example, be pivoted about a vertical axis, so that the gripping means performs a movement parallel to the cloth plane. The second gripping means is thus transferred to a working position in which it is positioned above or below the first gripping means. The two defined by the gripping means

Breakpoints are positioned one above the other.

By this configuration it is achieved that the entrained cloth piece forms a corner, which projects beyond the one longitudinal edge of the piece of cloth. The projecting portion is fixed with the sewing apparatus by attaching a corresponding seam, and the tip is separated by the cutter adjacent to the seam, so that the corner portion is completed. Subsequently, the gripping means can be opened again in the starting position and be reset so that they are prepared to process a next process. The corresponding device components can, for example, in a transport direction of the

Cloth piece, which is directed parallel to the longer edge of the cloth piece, at both front ends of the cloth piece in mirror-symmetrical

Arrangement can be arranged. You can also am

rear end of the piece of cloth also in

arranged mirror-image arrangement to the arrangement at the front end of the cloth piece. By a corresponding plurality of device components, the workflow can be accelerated, in which not every corner is completed successively, but two or even all at the same time

Corner areas are processed and finished.

Preferably, it is also provided that the

Cutting device in working position

located first and second gripping means along a side edge of the cloth piece or is movable parallel thereto.

In addition, it is preferably provided that the

Sewing device with located in working position first and second gripping means along a

Side edge of the cloth piece or is movable in parallel.

An embodiment of the invention is illustrated in the drawing and closer in the following

described.

It shows: Figure 1 is a piece of cloth, which is intended for the preparation of a parallelepiped-like fitted sheet or the like reference;

FIG. 2 shows a parallelepiped-like cover or

Cloth in finished form;

FIG. 3 shows the cloth piece according to FIG. 1 in a first position in which a corner region is prepared for forming a later corner region of the cover;

Figure 4 shows an embodiment of the piece of cloth in the finished fold, prepared for a further working process;

Figure 5 shows the clarification of the cutting and

Sewing method for separating the

formed Zipfel;

Figure 6 is a piece of cloth in a view analog

Figure 1 seen; FIG. 7 likewise in end view;

Figure 8 similar to a finished folded piece of cloth

Figure 5 seen; FIG. 9 likewise in end view.

The drawing figures serve to a

Inventive method for the production of fitted sheets or the like to Schonbezügen too clarify. In this case, rectangular pieces of cloth 9 are cut from a web. Such cloth pieces can be missed, for example, all around. It can also, as illustrated in Figure 1, elastic 10 be sewn or sewn on the edge or sewn into the hem.

To order from such a piece of cloth 9 a

As shown in Figure 2, the inventive method is intended and suitable. Particular importance is attached to the fact that the web height, ie the height of the part 11 can be determined in a simple manner and that the corner areas are exactly vertical, so the lines that are indicated by 12 in Figure 2, are directed as accurately as possible vertically.

In the embodiment according to the invention, the cloth piece 9 in the region of each corner 1.5 near both the corner 1.5 forming marginal edges in one

Distance from the corner 1.5, which corresponds to the web height 12 of the cuboid-like cover 11 to be formed, at two breakpoints 2, 3; 6, 7 held. To form the corner region, the first breakpoint 2; 6, which is located at the first peripheral edge 13,13 ^' , parallel to the plane defined by the cloth piece 9 level to the second breakpoint 3; 7 with the corresponding area of the cloth piece 9

postponed. In FIG. 6, the first holding position with the corresponding stopping points in FIG

Basic position shown. In FIG. 8, the

Positioning the breakpoints on top of each other

shown. Here, in Figure 8, the breakpoint 2 or 6 in the basic position according to FIG 6 indicated, while in position 2 ^' and 6 ^' the set position is shown. So there are the two breakpoints 3, 2 ^' or 7, 6 ^' arranged one above the other. Thus, a cloth tip is formed in the form of a right-angled triangle, as shown in Figure 8 is illustrative. The hypotenuse 15 of the triangle opposite tip is formed by the breakpoints 3,2 ^' and 7,6 ^' . The first catheter 16 forms a

Extension of the second peripheral edge 14 of the

Cloth piece 9, while the second catheter 17 forms the region of a seam to be applied and separation point for separating the fabric flap. The

Cloth tab is provided along the second catheter 17 with the corresponding seam 18, wherein

finally the cloth tip next to the seam 18

is separated and removed. After

Completion can the piece of cloth to the

Breakpoints 2,3,6,7 be released and stored for example on a cloth stack. Of course, in a corresponding procedure, all four corners of the

Cloth piece 9 edited and finished. At 19, an arrow is a possible

Transport direction of the cloth piece 9 indicated by a corresponding device.

Preferably, two front in the transport direction 19 end portions of the cloth piece can be processed simultaneously and correspondingly two rear corner regions of the cloth piece are also processed simultaneously, including a corresponding

Arrangement and design of

Device components is required. It is also possible that all four corner areas

be edited at the same time. Preferably and according to the invention, the method and the

operated individual process steps by means of mechanical, automatic, electrical, pneumatic and / or electronically controlled devices.

By means of such devices, only movements are carried out vertically to the plane of the opened towel piece 9 and parallel thereto.

The earing is in particular also due to the sequence of the drawing figures 3, 4 and 5

clarified. The reference point 4 or 8 is a reference for the required sewing device 20 or the separating device 21.

In Figure 3, the beginning of a first

Process step shown in which the cloth piece 9 is held in the area 2 and 3 and the tip of the corner 1 is illustrated. In Figure 4, all corners with a corresponding

Process step formed like a javelin. In FIG. 5 it is indicated how the separating cut and the seam run in order to cut off the ends and to close the opening formed thereby.

In Figure 2 is the finished product

visible.

The method combined with device components is explained with reference to FIGS. 6 to 9. Preferably, in this case, the cloth piece 9 by means of a transport device in the direction of the arrow 19 transported. Transport device can

For example, be a belt drive or other suitable element. In each case in the region of a corner 1.5 of the piece of cloth 9 near the two edges forming the corner 1.5 at a distance from the corner 1, the web height 12 of the train to be formed 11 corresponds to an arrangement of mechanical gripping means in the region of the breakpoints. 2 , 3,6,7. These gripping means 22,23 correspond to the breakpoints 3.2 and 6.7. A first of these gripping means, namely the gripping means 22, is only in a vertical to the plane of

Towel 9 directed direction 24 and against this direction to open and close

adjustable. The second gripping means 23,23 ^' is for

Opening and closing also vertically adjustable and additionally in the closed state in a position along the arrow 25 produced in which the corresponding gripping means 23 are displaced to a position below the breakpoint of the gripping means 22, said gripping means from the vertically adjusted position is additionally horizontally adjustable in the direction of the movement arrow 26 and that in a working position, shown in Figure 9, in which the second gripping means 23 ^{'is positioned} below the first gripping means 22, so that a tip of the cloth piece is formed, which projects beyond a longitudinal edge 13 of the cloth piece 9 , The movement of the second gripping means 23 can also be made such that this from the

Position is transferred according to Figure 6 in the position shown in Figure 8 by a circular motion, as indicated by the line of movement 27.

Then can then by means of a sewing device 20, a seam 18 along the longitudinal edge 17 over which the tip protrudes, are generated and the tip are separated by a cutting device 21. Depending on which parts are moved, the sewing device 20 and the cutting device 21 may be stationary, namely when the cloth piece 9 is moved in accordance with the movement arrow 19 or the sewing device 20 and the separating device

21 can against the movement arrow 19 or in the direction of the movement arrow 19 to move

Device components mounted.

The invention is not limited to the embodiment, but in the context of the disclosure often variable.

In particular, it is possible that the second

Gripping means 23 is not moved below the plane spanned by the cloth piece 9 level, but above the plane, so that in the end position

Gripping means 23 ^'is located above the gripping means 22. This would correspond to a folding, as shown in Figure 5 on the left.

All in the textual description and the

Drawing disclosed features are as

considered essential to the invention.

Claims

Claims:

Process for the production of fitted sheets or the like, in which rectangular pieces of cloth (9) are cut from a sheet, each corner (1,5) of pieces of cloth (9) laid one on another, spaced from the top of the corner (1,5) of the sheet Cloth piece, the superposed areas are connected by a seam and the projecting over the seam tip is separated so that a parallelepiped reference (11) or

Cloth piece is formed characterized in that

the cloth piece (9) in each case in the region of a corner (1.5) near both the corner (1.5) forming

Border edges at a distance from the corner of the ridge height of the forming parallelepiped-like cover (11) or cloth corresponds, is held at two breakpoints (2,3; 6,7),

the first holding point (2, 6) at the first peripheral edge (13, 13 ^' ) parallel to the plane spanned by the cloth piece, the second holding point (3, 7) at the second peripheral edge (14, 14 ^' )

corresponding area of the cloth piece (9) is moved,

both holding points (2 ^' , 3, 6 ^' , 7) are held one above the other and thus a cloth tab in the form of a right triangle is formed, of which the hypotenuse (15) opposite

Is formed by the breakpoints (2,3, 6,7), the first catheter (16) forms an extension of the second peripheral edge (14) of the cloth piece (9) and the second catheter (17) the area the seam to be applied (18) and the separation point forms,

the cloth tab along the second catheter (17) is provided with the seam (18) and is separated next along the seam (18),

- The finished cloth piece (9) to the

Breakpoints (2,3, 6,7) is released.

2. The method according to claim 1, characterized in that two front corner regions of the cloth piece (9) are processed simultaneously.

3. The method according to claim 2, characterized in that two rear corner regions of the cloth piece (9) are processed simultaneously.

4. The method according to any one of claims 1 to 3,

characterized in that the front and rear corner areas are processed simultaneously.

5. The method according to any one of claims 1 to 4,

characterized in that the method and the individual method steps by means of mechanical, automatic, electrical, pneumatic

and / or electronically controlled devices.

6. The method according to claim 5, characterized in that by means of the devices only

Movements are performed vertically to the plane of the opened towel piece (9) and parallel to it. Device for the production of fitted sheets or similar protective covers, which are formed from a cut-sheet material into a parallelepiped-like coating (11), with a

Transport device for transporting isolated cloth pieces (9) in planar alignment,

in particular for carrying out the method according to one of claims 1 to 6, characterized

in that in each case in the region of a corner (1,5) of the cloth piece (9) near the two edges (1,5) forming marginal edges at a distance from the corner (1,5), the web height of the parallelepiped-like cover to be formed (11) or cloth

corresponds, mechanical gripping means (22,23) are arranged, which in a closed position

Fix breakpoints (2, 3, 6, 7) of the piece of fabric (9) and release in an open position,

that a first of these gripping means (22) is adjustable only in a direction directed vertically to the plane of the cloth piece (9), in particular for opening and closing or also in the closed state,

that a second of these gripping means (23) for

Opening and closing is also adjustable and preferably additionally in the closed state is vertically adjustable in a position in which the gripping means (23) above or below the plane of the cloth piece (9) are displaced, said gripping means (23) in particular in vertically adjusted position or is adjustable horizontally without vertical adjustment or is pivotable about a vertical axis and that from the basic position or the vertical

displaced position into a working position, in the second gripping means (23) above or below the first gripping means (22)

is positioned so that a corner of the

Cloth piece (9) is formed, which has a

Longitudinal edge of the piece of cloth protrudes,

in that a sewing device (20) is arranged, by means of which a seam (18) runs along the

Longitudinal edge over which the tip protrudes, can be generated, and a cutting device (21) by means of which over the seam (18) projecting tip is separable.

Apparatus according to claim 7, characterized

in that, when the first and second gripping means (22, 23) are in working position, the cutting device (21) runs along a

Side edge of the cloth piece (9) or is movable in parallel.

Device according to one of claims 7 or 8, characterized in that the sewing device (20) is located in working position befindlichem first and second gripping means (22,23) along a side edge of the cloth piece (9) or movable parallel thereto.