EP0883708A2

EP0883708A2 - Hair-stitching machine

Info

Publication number: EP0883708A2
Application number: EP96946325A
Authority: EP
Inventors: Ulrich Werner
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-12-29
Filing date: 1996-12-28
Publication date: 1998-12-16
Anticipated expiration: 2016-12-28
Also published as: ATE200116T1; WO1997024483A3; WO1997024483A2; EP0883708B1

Abstract

To keep material outlay and moving bodies to a minimum, a hair-stitching machine is proposed for the stitching of hair into an artificial hairpiece (toupee) using thin, transparent PVC plastic sheets arranged on top of each other on a rigid positive mould and into which the individual hairs are inserted from above and after all hairs have been inserted they are pressed and fastened by adhesive in further procedural steps, in particular using artificial resin, to the carrier sheet. Said hair-stitching machine comprises a cupboard-shaped housing enclosing the control members for step motors for adjusting the moving members. The stitching needle with a supply of hair is arranged above the said housing upper surface which is in the form of an assembly plate. The positive mould (12a) can be moved into a top and a bottom position and can be tilted; it can also be displaced in steps to be three-dimensional in relation to the stitching needle such that during each stitching the stitching needle above the positive mould (12a) enters the insertion point at right angles to the tangent of the surface of the positive mould (12a). A support device (37a, 37b, 37c) is provided with two support arms (37a, 37b) pivotable above the positive mould (12a), and the stitching needle head (15) which has the hair supply (32, 33) is arranged on one support arm (37a) of said support device, and a scanner (50) for the unstitched hairpiece on the positive mould (12a) is arranged on the other support arm (37b) thereof.

Description

Hair stitching machine

The invention relates to a hair piercing machine for bribing an artificial hair piece (toupee) according to the preamble of claim 1.

In addition to the numerous different doll head wigs, artificial hair pieces for human use are known, which are made from several layers of different materials such as gauze, rubber, celluloid, glass fiber fabric, various plastics, etc. So there is z. B. a known hair piece of four layers. With him, the hair is individually pulled through two upper layers of fabric and attached to the underside of the second layer with an adhesive layer, while another layer of fabric is counter-glued as a cover against this adhesive from below. The top layer consists of the scalp of appropriately colored silk gauze. The layer underneath should be impermeable to adhesive and water. The counter layer, on the other hand, consists of silk gauze.

In all previously known methods for producing hair pieces, the individual hairs or small hair bundles are stuck into the foils by hand. There are several problems with this. For example, the stinging person must be capable of handling the piercing tool, a needle with groove, and individual hair. In addition, a large sense of proportion is required to distribute the intended amount of hair equally or differently over the entire hair part. Only long experience helps to avoid having enough hair left at the end of the lancing process to bribe the last parts of the hair piece with the required density. Hair pieces with uneven density of the hair require re-piercing and usually also a reordering of additional hair with the desired color mixture, which results in a long delay in delivery. The state of the art includes program-controlled automatic placement machines, e.g. B. for boards in which electronic components are used in certain positions of the board. The assembly of the circuit boards is carried out in such a way that the circuit board is arranged in a fixed manner and the assembly arm holding the element to be inserted visits the assembly location under program control and uses the element. The assembly arm then moves in the direction of the element store in order to pick up the next element.

Analogous to this method, it is conceivable to design a hair-piercing machine in which the positive shape carrying the part to be bribed is firmly mounted on a mounting plate and the piercing needle head is guided around the positive shape with the piercing needle

The disadvantage here is the complex and space-consuming mechanism for moving the piercing needle head. Furthermore, the needle head must contain all elements such as stepper motors, gears, etc., so that great demands must be made on the weight reduction of the individual parts.

Another problem with bribing a hair piece is that the individual puncture points are not determined by calculations such as e.g. B. with a circuit board based on the circuit diagram, but each must be determined depending on the person. This would have to be done in a special scanning device. The evaluation of the data could be used to control the piercing needle.

task

The object of the invention specified in claim 1 is to provide a hair piercing machine according to the preamble of claim 1, in which the material expenditure and the moving masses are as small as possible. Advantages of the invention

With the hair-piercing machine according to claim 1, apart from the advantages resulting from the solution of the problem, it is achieved that the drive and actuating elements for producing the insertion position are accommodated in the housing and the control commands for the stepping motors and all others for hairing very important data of the artificial hair part such as hair spacing, hair density and deviations of the head surface from the average head shape can be determined directly before the lancing process without changing the position of the positive shape without prior change in position of the positive shape provided with the hair piece foil placed thereon. The machine can be operated with just a few hand movements.

Advantageous developments of the invention are specified in subclaims 2 to 9.

With the development according to claim 2 it is achieved that the T-shaped holding device only needs to be rotated in order to bring either the scanning device or the piercing needle into the working position above the positive shape.

The development according to claim 3 makes it possible to selectively set different independent positions of the Halme tearme without adjustment, and prevents the holding arms from being moved out of the working position unintentionally. In addition, the holding arms can be pivoted away so that the positive form is completely freely accessible.

The development according to claim 4 facilitates the filling of the hair and avoids damage when the hair feeder is pivoted away by bumping against the rear wall of the room.

The development according to claim 5 enables the positive shape to be adjusted to the desired lancing position. The development according to claim 6 extends the adjustment possibility of the positive shape in the event that the head shape has larger flat surfaces.

The development according to claim 7 facilitates the assembly of the hair piece and reduces the cost of materials.

With the development according to claim 8, the space required for the adjusting elements of the positive form can be reduced.

The development according to claim 9 reduces the effort for pivoting accommodated in the housing of the machine and enables the coordinated tilting of the positive shape and the needle holder.

Explanation of the invention

Embodiments of the invention are explained with reference to FIGS. 1 to 5. Show it

Fig. L the hair piercing machine in the overall view, with the scanning device in the working position,

Fig. 2 the hair piercing machine in the overall view, with the piercing device in the working position,

3 shows a first embodiment for the adjustment mechanism for the positive form,

Fig. 4 shows a second embodiment for the Verstellmecha¬ mechanism for the positive form in front view and

Fig. 5 rotated the second embodiment for the Verstellmecha¬ mechanism for the positive form by 90 degrees. In Fig. 1, the housing 2 (partly only indicated) is closed at the top with the mounting plate 11. The positive mold 12a, optionally divided into a positive stump and a positive shell, is movably arranged on the mounting plate 1 a. The sleeve 46 covers the recess in the mounting plate 11. The one on the mounting plate 11, from which the positive mold 12a protrudes via an adjustment mechanism accommodated in the housing 2. The sleeve 46 covers the opening in the mounting plate 11. Near the rear wall of the housing 2 there is the support column 49 for the holding arms 37a and 37b. One support arm 37b carries the scanning device 50, which is currently in its working position, specifically above the geometric center of the positive mold 12a. If necessary, the column can be rotated so that the short holding arms can be swung away from the positive form.

The holding arms 37a and 37b (Figs. 1 and 2) preferably enclose an angle of 90 degrees. The holding arm 37a with the encapsulated piercing needle head 15 is therefore pivoted away laterally in the rest position.

On the second holding arm 37a and below the piercing needle head 15, the endless double band 33 of the hair supply with the foldable and / or removable distributor shaft 32 is attached. A pivot joint 51, which establishes the connection of the holding arms 37a and 37b with the support column 49, serves to pivot the rigidly connected holding arms 37a and 37b. In principle, the holding arms 37a and 37b can be rigidly connected to the holding column 49 reaching into the housing 2 and the swivel joint 51 can be arranged there.

In Fig. 2, the positions of the two holding arms 37a and 37b are rotated clockwise by 90 degrees, so that the piercing needle head 15 is now in the working position above the positive mold 12a and the scanning device 50 is in the rest position. Instead of the two holding arms according to FIGS. 1 and 2, the holding arm 37b in FIG. 1 can be designed as a longitudinal part of a lying T (not shown), on the two free (short) ends of which the scanning device 50 (at one end) and the piercing needle head 15 (at the other end) are firmly mounted. The T-shaped holding device can be rotated on the column 49 - rigidly in the horizontal direction - by means of a swivel joint and, by rotating through 180 degrees, enables either the scanning device or the piercing needle head to be brought into the working position.

If the holding arms 37a and 37b according to FIGS. 1 and 2 are to be moved independently of one another, then instead of the one joint 51 two joints one above the other (not shown), each provided with individual latching positions, are provided, which make it possible for both Holding arms 37a and 37b can also be pivoted simultaneously into the rear rest position, e.g. B. in the event that the hair piece is examined closely or individual hairs need to be manually re-pierced.

The distributor shaft can either be folded up and / or removed in order to make it easier to fill in the hair and to prevent it from hitting the wall and damaging it when the holding arm 37a is pivoted when the holding arm 37a is pivoted.

In operation of the hair piercing machine 1, first the holding arm 37b with the scanning device 50 is in the working position according to Fig. 1, the hair part on the surface of the positive mold 12a is optically scanned and the data including the size and position of the hair part and density the intended hair is stored in a computer system. For the operation of the stepping motors for moving the positive shape 12a, a standard program is run, with which all future puncture points are located in the hairpiece and their respective surface after deviation from normal rounding (dents and bumps in the head shape) can be determined and evaluated. In combination with a special program, the surface data provide a three-dimensional image of the hair part on the head.

In the operation of the hair piercing machine 1, the surface of the positive mold 12a is first optically scanned and the data, including the size and position of the hair part and the density of the hair, are stored in an EDP system. For the operation of the stepping motors for moving the positive form 12a, a standard program is run, with which all future puncture points in the hair part are located and their respective surface is determined after deviation from the normal curve (dents and dents in the head form) be rated. In combination with a special program, the surface data provide a three-dimensional image of the hair part on the head. The data is fed to the computer, which determines the control data for all drives. The computing device can be arranged separately or in the housing 2 of the hair piercing machine 1.

The hair feeder 31 consists of a distributor shaft 32 into which the hair is inserted in bundles and in which the hair is connected by a distribution arrangement, not shown, e.g. B. by counter-rotating rubber rollers, the endless belt device 33 are fed individually. The endless belt device 33 consists of at least two endless belts, each provided with grooves 34 for one hair each. Two endless belts are arranged directly next to one another in such a way that the piercing needle 29 fits between them during the piercing process. The hair lies on the endless belt device 33 such that the root end of the hair facing the piercing needle 29 projects above the endless belt device 33 by about 2 cm.

To pierce the hair, the holding arms 37a and 37b are pivoted, ie the scanning device 51 into the rest position and the piercing needle head 15 into the working position above the positive shape 12a (FIG. 2). When the bribery program is triggered, the stepper motors in the Inside the housing 2, the step commands from the computing device.

If necessary, e.g. B. for special, not programmed puncture points, the lancing process can be triggered by hand. Fixed, adjustable limits for the end positions ensure that the penetration depth and stroke of the needle remain unchanged while working on the hair part. When the plunge is inserted, a spring is tensioned, the tension of which can be selected. The needle then automatically returns to the rest position after each puncture.

A known eccentric drive is used for the machine-operated lancing process. All other elements, in particular the various drives, are integrated in the housing 2.

The positive mold 12a is detachably below the sleeve 46 by means of a quick-release fastener, not shown, with the tilt drives 44 and 45 (FIG. 3) or is firmly connected as a positive shell 12b, c. In the following, the term "tilting" is used whenever the axes of rotation are short, otherwise the term "swiveling" is used for relatively long axes of rotation. The positive form 12a, although it is specially made for each hair piece and can therefore only be used once, must consist of hard but light (and therefore expensive to manufacture) material. It is therefore advantageous to design the positive shape 12a as a stump 12c that is firmly connected to the tilting drive 44 via the fastening plate 48, on which a positive shell 12b, onto which the hair piece to be bridged is drawn, is immovable with known closure means, but immovable again - Can be held remotely, as shown in detail in Figs. 4 and 5. With the division of the positive mold 12a into the positive stump 12c and the positive shell 12b, it is achieved that the positive shell 12b can consist of cheap material (for example plaster), while for the positive stump 12c, which forms a permanent part of the adjusting device, the most suitable material can be chosen without considering the cheapness. So that the positive shell 12b can always be inserted in the same position on the positive stump 12c, interlocking profiles 59, for example, are provided on the contact surfaces of the positive shell 12b and the positive stump 12c. B. beads and notches with corresponding recesses, are provided.

In the first embodiment (Fig. 3), the adjustment means for the positive mold 12a are shown. With the Kippan¬ drives 44 and 45, each consisting of stepper motor and gear, the positive mold 12a can be tilted around the X-axis and the Y-axis. These movements are necessary when the puncture plane at the puncture point, e.g. B. in the case of bumps in the head shape of the hairpiece wearer is not perpendicular to the piercing needle and must therefore be corrected.

In order to control the individual puncture points on the hair part, the positive shape 12a including the tilt drives 44 and 45 must be pivoted with a larger radius than when tilting. The support arm 39 therefore connects the Kip¬ pan drives 44 and 45 at the required distance with the high-low drive 41, also consisting of motor and gear, which first ensures the raising and lowering of the positive mold 12a. The support arm 39 has a ring gear and is guided in the housing for the high-low drive 41. With the up-down drive 41 inclusive, the distance between the positive form 12a and the piercing needle can be changed by moving the support arm 39 in the Z-axis, corresponding to the respective direction to the puncture point.

The housing for the high-low drive 41 is firmly connected to the 1st swivel drive 42 (stepping motor and gear), so that the support arm 39 with the other elements connected to it (positive form 12a, tilt drives 44 and 45) around the X. -Axis, ie tilted in the direction of rotation "D" can. Finally, the second swivel drive 43 (stepping motor and transmission) acts on the first swivel drive 42 to encompass the entire arrangement (1st swivel drive 42, high-low drive 41, support arm 39, tilt drives 44 and 45 and positive form 12a) to tilt about the Y axis, ie in the direction of rotation "E". The adjustment axis of the 2nd swivel drive 43 is fastened to the side walls of the housing 2, so that the motor of the 2nd swivel drive 43 is also tilted.

In the second embodiment according to FIGS. 4 and 5, the positive shape (12a in FIG. 1) is subdivided into a positive shell 12b, which carries or is supposed to carry the hair part, and a further inner positive shell 12c corresponding to the positive stump. Guide beads 59, which preferably have a triangular cross section, are used for the positive connection of the two shells 12b and 12c. For easy separation of the two shells, the (outer) positive shell 12b protrudes at the ends somewhat beyond the inner positive shell 12c.

In contrast to the first embodiment of the tilt drives 44 and 45 shown in FIG. 3, in the second embodiment the inner positive shell 12c is connected to the support arm 39 via a cardanic suspension 51 mounted in the interior of the positive shell 12c. The gimbal 51 consists of the l. Cardanic attachment 52, with attached 1st cardan drive (motor and gear) 53, which is connected on the one hand directly to the support arm 39 and on the other hand via the rotary axes 54 to the 2nd cardanic attachment (motor and gear) 55. With the 1st cardan drive 53, the inner positive shell 12c can be rotated about the "X '^ axis. On the 2nd cardanic fastening 55, the 2nd cardan drive (motor and gear) 56 is arranged, the axis of rotation 57 of which outside the 2nd Cardanic fastening 55 in each case merges into fixed connections 58 on the inner positive shell 12c (Fig. 4) The second cardan drive 56 causes the positive shell 12c to rotate about the “Y” axis, as in FIGS Indicated as a circular arc file, the inner positive shell 12c can be rotated about 90 degrees in all directions If axes of rotation 54 and 57 lie in the center of a circle, which is averaged from a multiplicity of head shapes, the corrections for the steepness of the piercing needle can be minimized due to deviations from the normal head shape.

Instead of the stepping motors, other stepping means, e.g. B. stepping solenoids are used, especially when only a few switching steps have to be carried out.

With the high-low drive 41, the support arm 39 can, if necessary, also be moved so far downward that the positive mold 12a or the inner positive shell 12c with or without (outer) positive shell 12b disappears completely below the mounting plate 11. The recess in the mounting plate 11 can then be closed with a cover.

The swivel drives 42 and 43 (FIG. 3), which are geared to a swiveling movement of the positive mold 12a, can be replaced by simple (not shown) displacement drives in such a way that the high-low drive 41 for the height adjustment of the positive mold 12a and the Elements arranged above the high-low drive 41 do not have to be pivoted, but only need to be moved along the “X” and “Y” axes.

In order to ensure that the piercing surface of the hair part is perpendicular to the direction of the piercing needle, the swivel drives provided for this purpose can also be moved into the piercing needle head 15. In this embodiment, which is not shown separately in detail, the high-low drive

41 firmly connected to the housing 2. Its previous function is taken over by the second drive set (swivel drives

42 and 43) corresponding drive set, which is accommodated in the piercing needle holder and which tilts the piercing needle head 15. In order to take into account the misshapen spots such as dents or indentations in the head shape and to correct the piercing direction of the piercing needle in such a way that it also penetrates the hair piece vertically at these points, the tilting means for the piercing needle in its holder at a (pivot) point which is just as far away from the puncture point in the hair part as the puncture point from the center of rotation of the gimbal suspension 51. Compliance with this condition can be facilitated by the fact that except the support arm 39 for the positive mold 12a, the support column 49 for the holding arms 37a and 37b is also adjustable in height. The sensors provided in the piercing needle head 15 for measuring the distance to the puncture point offer the possibility of setting the ideal distance automatically or after being displayed by hand.

The arrangement of the (further) tilt drive in the piercing needle head 15 instead of the swivel drive 42, 43 enables the coordination of corrective movements, i. H. when the piercing needle holder is pivoted, the positive mold 12a is tilted back by the same angle value.

For the automatic setting of the piercing needle in the puncture process, a practice-oriented tolerance value can be selected, within which no corrections of the tilting and swiveling movements and the distance of the piercing needle to the surface at the puncture point are made. B. if the piercing direction +/- 10 degrees from the perpendicular to the surface at the puncture point and the piercing distance deviates about 2 mm from the standard distance. The advantage here is in increasing the speed of the lancing process and in reducing the probability of incorrect settings.

Claims

claims

1. Hair piercing machine for bribing an artificial hair piece (toupee), with hair using thin, transparent plastic films made of PVC arranged one above the other on a hard positive mold, into which the individual hairs are pierced from above and after all the hairs have been pierced in further process steps , in particular using synthetic resin, are glued and pressed to the carrier film, consisting of a cabinet-like housing containing the control elements for the stepping switch motors for adjusting the movable elements, above which the piercing needle is formed above the upper side which is designed as a mounting plate a hair feed is arranged, characterized by a high-low and tiltable positive shape (12a), which is also gradually and three-dimensionally adjustable to the piercing needle that the piercing needle arranged above the positive shape (12a) is in each case perpendicular to the tangent of the surface during the piercing act the positive form (12a) pierces at the puncture point, and by means of a holding device (37a, 37b, 49) with two holding arms (37a, 37b) which can be pivoted above the positive mold (12a) and on one holding arm (37a) of which the piercing needle head (15) with hair feed (32, 33) and on the other holding arm (37b) there are arranged a scanning device (50) for the unpicked hair part lying on the positive shape (12a).

2. Machine according to claim 1, characterized in that the holding arms (37a, 37b) of the holding device (37a, 37b, 49) form the short ends of a T-piece, the long end of which is arranged horizontally and rotatably, such that εich at least either the scanning device (50) or the piercing needle head (15) is in the working position for the scanning process or for the piercing process.

3. Machine according to claim 1, characterized in that the holding arms (37a, 37b) of the holding device (37a, 37b, 49) are horizontally pivotable, depending on or independently of one another, and can each be mechanically or electronically secured in several latching positions, in which at least either the scanning device (50) or the piercing needle head (15) is in the working position for the scanning process or for the piercing process (Figs. 1, 2).

4. Machine according to one of claims 1 to 3, characterized in that the distributor shaft (32) for the hair supply can be folded up and / or removed.

5. Machine according to one of claims 1 to 4, characterized ge indicates that the positive form (12a) via gear arrangement (44, 45), consisting of two firmly connected drives (44, 45), one Allow tilting of the positive form (12a) both about the X-axis (direction of rotation "F") and about the Y-axis (direction of rotation "G") with one end of a height-adjustable support arm (39) having a ring gear (40) is connected, the other (lower) end of which is mounted in a gear (41) for adjusting the height of the support arm (39), which is connected to a further gear arrangement, which consists of tilting the support arm (39) about the X axis (Direction of rotation "D") certain gear (42), which is connected to rotate about the X axis (direction of rotation "D") with a third gear (43) through which the support arm (39) about the Y axis (direction of rotation "E") can be tilted and is held on the side walls of the housing (2).

6. Machine according to claim 5, characterized in that the support arm 39 with the elements mounted thereon (tilt drives 44, 45 and positive mold 12a) is horizontally displaceable in the direction of the "X" and "Y" axes.

7. Machine according to one of claims 1 to 6, characterized ge indicates that the positive mold (12a) consists of a firmly mounted positive stump (12c) and a positive and adjacent positive shell (12b) that the positive shell (12b) 12b) made of non-hard material (eg Gibs) and the positive stump (12c) made of solid plastic that interlocking profiles (59) are provided on the contact surfaces of the positive shell (12b) and positive stump (12c) and that the attachable and removable positive shell (12b) is longer at the ends than the positive stump (12c) formed as the inner positive shell.

8. Machine according to one of claims 4 to 7, characterized ge indicates that the positive form (12a) via a kardani¬ cal suspension 51 is connected to the support arm 39 (Fig. 3 and 4), the axis of rotation center with the center of a through the hair part coincides approximately formed circle.

9. Machine according to claim 8, characterized in that the piercing needle holder in the piercing needle head (15) about the "X" - and about the "Y" axis is tilted such that the removal of the puncture point in the hair part to the tilt (rotary ) Point of the needle holder is exactly as large as the pivot (middle) point of the gimbal.