KR20070031256A - Device for stitching on of cords or the like and embroidery or quilting machine with such devices - Google Patents

Abstract

The decorative braiding device includes a decorative braiding wheel 85 rotatably supported by the support 46. The drive of the decorative braided wheel 85 is made by a drive device 15 which can be controlled by a machine control device. The drive train removes the spline shaft 19, the coupler wheel 51, the gear wheel 53, the bevel gear 79, the bevel gear 81, the toothed belt pulley (not shown), and the toothed belt 87 from the motor. Gina is guided to the decorative braided wheel 85. The coupler wheel 51 is part of the coupler 49, which can be engaged by the needle rod 31. The return device 21, which is controllable by the machine control device and has the changeover rod 29, is used for separation. In order to allow the cord 95 to be cut after stitching the cord pattern, the cutting device 84 can be actuated through the rod 98 by the switching rod 29. After stitching the cord pattern, the movable cutter 88 is opened by the return device 21, and the gate of the stitch machine is moved so that the cord 95 is placed under the leaf spring 24 and clamped. When the movable cutter is moved toward the fixed cutter 86 after closing by the return device 21, the pin 26 is pressed against the leaf spring 24 and enhances the clamping effect. This secures a new chord start for stitching subsequent patterns.

Retractor, cutter, leaf spring, cord, changeover rod

Description

Device for stitching on of cords or the like and embroidery or quilting machine with such devices}

1 shows a plurality of decorative braided and sequined heads assembled in a book stitch machine, with a common drive device selectively used for driving decorative braided heads and sequined heads, and a return of the cavity for decorative braided heads and sequined heads; Figure showing the device.

2 is a sequin head in a separated state.

3 shows the sequin head after operation by the needle rod.

4 is a perspective view of the sequin head before cutting the cord.

5 is a side view of the sequin head of FIG. 4;

6 is a sequin head of FIGS. 4 and 5 seen from below;

7 to 9 are sequin heads as in FIGS. 4 to 6 after cutting and clamping the cord.

11 is a perspective view of the cord braking device after insertion of the cord.

12 is a perspective view of the cord braking device in the open state.

Explanation of reference numerals for the main parts of the drawing

15 drive device 31 needle rod

19: spline shaft 46: support

21: return device 49: coupler

24: leaf spring 51: coupler wheel

26: pin 53: gearwheel

29: switching rod 84: cutting device

The present invention relates to an apparatus for stitching cords and the like using rotatable decorative yarn wheels and the like.

Already about 100 years ago there were devices for stitching decorative materials. In decorative plywood, the cord or band material in the form of a given ornament is stitched onto the stitch base. The following code is only covered for clarity. References to code by way of example are not intended to be limiting.

FR 467 481 describes a pantograph stitch machine comprising a drive engine for the operation of a number of decorative braided wheels for stitching cords, laces, lacings, chenilles, pearl cords and similar ornaments. The decorative braided wheel includes a central opening through which the stitch needle passes and a peripheral opening that guides the cord to be stitched onto the fabric and the like. Multiple peripheral openings of various sizes may be provided. In the case of stitching cords, decorative braided wheels are rotated correspondingly to the path of the pattern by hole bands and the cords are stitched onto the fabric in such a way that stitching alternates to one or the other side of the cord.

In CH 563 486 a stitch machine is known in which a number of decorative braided wheels are controlled by a machine program and are rotated by racks.

US 6 957 615 describes a quilting machine comprising a plurality of decorative braided wheels controlled by a machine program that are rotated through a toothed belt by a motor.

In the embodiment shown, it is complicated to mount or re-separate the decorative weaving device in the stitching machine and the quilting machine when no longer needing the decorative weaving device or wishing to monitor the device for stitching sequins, for example.

None of the known decorative yarns cut the cord when the pattern is completed. This has the disadvantage that the individual patterns are connected to each other by the length of the code, which must later be removed by a complicated hand. Removed cord lengths form unwanted waste. The problem of cutting in decorative plywood over hundreds of years has not been solved, in particular because the needles are arranged at intervals of the French length unit (27.08 cm) in the book stitch machine, and thus there is little space for the cutting device. There is also a problem of how stitching is possible without problems after cutting.

A non-Swiss patent specification 00078/06 describes an apparatus for stitching cords and the like, which comprises a coupler for engagement, which is operable by a needle rod of a stitch machine and is removable by a return device. The device has in particular the advantage that it can be simply used at any stitch position or replaced by a device for stitching sequins. Since each device or decorative braided head is designed for only a few stitch points, the device can be used in any repeating pattern and the minimum repeating pattern is an 8/4 repeating pattern (one decorative braiding head per second stitch position). ). However, the decorative braided head does not have a cutting device for the cord as in the prior art.

It is an object of the present invention to provide an apparatus for stitching a cord or the like, by which the cord can be cut and the cord beginning can be stitched again without problems.

According to the present invention, the above object is achieved by a decorative braided wheel being rotatably supported on a support, and a cutting device and a clamping device for cutting or fixing the cord on the support. Preferably the cutting device is arranged laterally on the support. This has the advantage that the cord is cut close to the position where it was fixedly connected to the stitch base by the stitch. Preferably, the cutting device has a fixed cutter and a movable cutter. This allows for a cutting process such as by scissors. The stationary cutter may be formed by a plate disposed on the support, on which a cutting edge is formed. This allows for cutting despite the narrow space conditions. The movable cutter may be formed with a lever available for the cutting edge, which lever is connected with the shaft disposed horizontally. In order to enable clean cutting, the movable cutter is preferably prestressed against the stationary cutter by a spring.

As the clamping device a lower leaf spring is preferably used arranged on the support. This enables code clamping in tight spaces. In order to ensure that the cord is clamped securely, the cutting device is provided with an actuating element which pressurizes the leaf spring.

A preferred embodiment of the apparatus provides a switching engine which can be operated by the control of the stitch machine to start or stop the device, which can be operated by the needle rod of the stitch machine. For example, a solenoid or pneumatic cylinder may be provided for switching off. In this case, the solenoid or pneumatic cylinder can cause the cord to be blocked and cut.

In order for the switching engine to be stopped again, a return device is preferably provided. The return device preferably has a switching rod for the manipulation of a plurality of stitch positions.

Preferably, the cutting device and / or the clamping device are operable by a return device. This eliminates the need for a special organ for the operation of the cutting device. For this purpose the return device is preferably connected with an adjustable rod with a movable cutter of the cutting device.

A preferred embodiment of the present invention provides a cord braking device. In this way, the cord is extended and fixed when stitching, which is desirable for neat stitching of the cord. The cord braking device has a plurality of pins and a cord can be guided around the pins. The greater the braking effect and the cord stress on the cord, the more the cord is wound around the pin.

The present invention relates to a stitching machine or a quilting machine comprising at least one device according to any one of claims 1 to 23.

Preferably the stitch or quilting machine also includes at least one device for stitching sequins or the like. This makes it possible to control the stitch program and optionally stitch the cord or sequins.

Embodiments of the invention are described with reference to the drawings.

The needle thread and the drum thread are not shown in Figs. 1 to 12 because they are not necessary for clarity on the one hand and for those skilled in the art on the other hand for understanding of the present invention. For the same reason, the fabric to be stitched is not shown in the figure. Exceptionally the fabric 18 and the book rail 20 are shown in FIG. 10. Also shown is a fabric compressor 52 and yarn feeders 54, 58 for book yarns.

1 shows a plurality of sequin heads 10 and decorative braid heads arranged in a book stitch machine in a 16/4 repeating pattern (one sequin head 10 and a decorative braid head 10 'for every four stitch positions). 10 'is shown. The heads are simply replaceable with screws 14 to an angled support 12 (FIGS. 1, 2 and 3) of the machine and provided with guide pins 16 (FIG. 4) for accurate positioning. do. The drive device 15 which can be controlled by the machine control device is used for the drive. The drive device 15 has a motor 17, for example a packing motor, in which a shaft extended by the motor over the entire length of the machine can be driven by a gearwheel or spline shaft 19, the spline shaft Decorative plywood and sequin heads 10, 10 'can be combined. The drive train is thus guided from the motor 17 to the drive shaft 57 via the spline shaft 19, the coupler wheel 51 and the gear wheel 53 (FIGS. 1 and 4).

The return device 21 is used for separation. The device can also be controlled by a machine control and consists essentially of a pneumatic cylinder 28, the piston 25 of which is connected to a lever 27 capable of pivoting the changeover rod 29. The diverting rod 29 extends over the entire length of the machine and has grabs 30 for each decorative braid and sequin heads 10, 10 ′, which grab are decorative braid heads in operation of the return device 21. Remove the 10 'or sequin head 10. 1 shows a needle rod 31 with a needle 33. A changeover cam 35 is fixed to each needle rod 31 to which a decorative braided head 10 'or a sequin head 10 is assigned, and the changeover cam is used for engagement.

The coupler 49 of the decorative braided head 10 ′ has a coupler wheel 51, which meshes with the gearwheel 53 of the spline shaft 19 (FIG. 1) and the drive shaft 57 after engagement. (FIG. 3). The coupler wheel 51 is supported above the lever 55 (FIG. 4), which can pivot about the shaft 57. The spring 56 attempts to secure the lever 55 in a position where the coupler wheel 51 engages the spline shaft 19. Coupler wheel 51 is permanently engaged with gearwheel 53 (FIG. 4) disposed on drive shaft 57.

The lever 55 has two arms 59 and 61. The coupler wheel 51 is rotatably supported on the arm 59 and can be actuated by the needle rod 31 and the grab 30 of the return device 21 (Fig. 2) on the other arm 61, A switching engine 65 is arranged for switching on and off 49.

If direct operation of the coupler 49 by the needle rod 31 is possible, the use of the switching engine 65 for the operation of the coupler 49 is preferred. The switching engine 65 is formed such that the lever 55 is rigidly supported and is not supported in the engaged position only by the force of the spring 56.

As shown in FIG. 4, the switching engine 65 has an actuating lever 67 in which a switching arm 68 is disposed. The actuating lever 67 can pivot on the one hand in the rotational direction by the needle rod 31 and on the other hand in the rotational direction by the switching rod 29 of the return device 21. The actuation lever 67 is connected with the cam disk 69 by a shaft 66, which is pressed against the peg 71 by a spring 73. The cam disk 69 can be rotated between positions "off" and "on" to determine the switch on (FIG. 3) position or the switch off (FIG. 2) position of the coupler 49. Cam track 72 passes from one of these positions to another (FIG. 5). The spring 73 is stressed back to the center of the cam track 72 and then relaxes slightly again. The cam disk 69 is fixed by the spring 73 in the switch off or switch on position.

The movement of the cam disk 69 caused by the needle rod 31 causes the lever 55 to pivot, so that the coupler wheel 51 engages the spline shaft 19 (FIG. 3). When the cam disk 69 is moved in the opposite direction through the arm 30 by the return device 21, the coupler wheel 51 is again disengaged from the spline shaft 19, but the ratchet ( 75; the teeth of FIG. 4 engage with the coupler wheel 51. FIG. As a result, the drive shaft 57 is blocked by the gearwheel 53. Thus, at the decorative yarn head, the decorative yarn wheel 85 is locked.

The drive train from the motor 17 through the spline shaft 19, the coupler wheel 51 and the gear wheel 53 towards the drive shaft 57 has been described above. A bevel gear 79 is arranged on the drive shaft 57, which bevel gear meshes with another pinion 81 connected with a toothed belt pulley (not shown). The toothed belt pulley is used for driving the toothed decorative weaving wheel 85 by the toothed belt 87. Each decorative yarn head 10 'includes only one ornamental yarn wheel 85.

The decorative plywood wheel 85 includes a central opening 89 through which the stitch needle 33 (FIG. 1) and at least one peripheral opening 91 pass, and the cord 95 to be stitched into the fabric through the peripheral opening, etc. This is guided. Decorative plywood wheels are known from the prior art cited in the introduction.

The description thus far corresponds substantially to that of Swiss Patent Specification 00078/06, which is referenced for further details.

The cutting device 84 according to FIGS. 4 to 9 includes a stationary cutter 86 and a movable cutter 88. The fixed cutter 86 is formed of a thin plate, and the cutting edge 90 is formed on the side of the thin plate. The steel sheet forms part of the support 46 made up of a plurality of pieces of sheet metal. The movable cutter 88 is formed of a lever that is pivotable about the cutting edge 90, which is engaged with the shaft 92 arranged horizontally. The shaft is supported on the side walls 36, 38. The movable cutter 88 is prestressed against the stationary cutter 86 by means of a spring 96 disposed between the adjustment ring 94 and the side wall 38. The movable cutter 88 is connected with the switching rod 29 of the return device 21 by the adjustable rod 98.

As a clamping device for the cord 95, a leaf spring 24 disposed below the support 46 is used. In order to enhance the clamping effect, the pins 26 disposed on the movable cutter 88 are pressed against the pin springs 24 during and after the cutting process.

Cord braking device 32 (FIGS. 10-12) is used to allow cord 95 to always maintain some stress. This prevents undesirable loop formation when the cord 95 is pivoted by a decorative braided wheel 85. The cord braking device 32 has a plurality of pins 94 and a cord 95 can be guided around the pins. The more the cord 95 is wound around the pin 94, the greater the braking effect. The hinged cover 40 prevents the cord 95 from being pulled out of the cord braking device 32.

The decorative braid head 10 'works as follows: If the program requests to stitch the cord 95 by, for example, two decorative braid heads each, the coupler 49 by the needle rod 31 at the appropriate stitch position. ) Is activated and the corresponding decorative braid head begins to stitch the cord. The decorative braided wheel 85 is controlled by the machine control on the one hand corresponding to the curved path of the pattern, and on the other hand the cord 95 is switched to one side or the other when sewing individually, so This generally consists of alternating one side or the other side of the cord, so that the thread 93 of the needle winds up the cord 95 and the cord is stitched onto the fabric 99 together with the book thread 97. The relatively rigid cord 95 has needle stitching along a zigzag line, so that the cord does not need to be switched or only slightly diverted.

After stitching the cord pattern, the return device 21 is operated by the machine control, which in turn opens the coupler 49 and the cutting device 84. The gate of the stitching machine is then moved so that the cord 95 is placed under the leaf spring 24 and clamped. In addition, the return device 21 is blocked by the machine control device. As a result, the cutting device 84 is operated through the rod 98, thereby cutting the cord 45. The pin 26 is pressed against the leaf spring 24 and enhances the clamping effect. Thus, it is ensured that the beginning of the cord for the stitch of the subsequent pattern is securely fixed.

It can be summarized as follows: The decorative yarn device includes a decorative yarn wheel 85 rotatably supported on the support 46. The drive of the decorative braided wheel 85 is made by a drive device 15 which can be controlled by a machine control device. The drive train is spline shaft 19, coupler wheel 51, gear wheel 53, bevel gear 79, bevel gear 81, timing belt pulley (not shown) from motor 17. And it is guided to the decorative braided wheel 85 via the toothed belt 87. The coupler wheel 51 is part of the coupler 49, which can be engaged by the needle rod 31. A return device 21 which is controllable by the machine control device is used to separate, and the return device has a switching rod 29. In order to allow the cord 95 to be cut after stitching the cord pattern, the cutting device 84 may be actuated through the rod 98 by the switching rod 29. After stitching the cord pattern, the movable cutter 88 is opened by the return device 21 and the gate of the stitch machine is moved so that the cord 95 is placed under the leaf spring 24 and clamped. When the movable cutter 88 is moved toward the fixed cutter 86 upon closing by the return device 21, the pin is pressed against the leaf spring 24 to enhance the clamping effect.

Claims (25)

In the device for stitching cords and the like using a rotatable decorative yarn wheel 85, The decorative plywood wheel 85 is rotatably supported by the support 46, and a cutting device 84 and a clamping device 22 for cutting or fixing the cord 95 are disposed on the support 46. Apparatus for stitching cords and the like using a rotatable decorative plywood wheel, characterized in that. 2. The device of claim 1, wherein the cutting device (84) is disposed laterally on the support portion (46). 3. The method of claim 1 or 2, wherein the cutting device 84 comprises a fixed cutter 86 and a movable cutter 88 for stitching cords and the like using a rotatable decorative weft wheel or the like. Device. 4. The fixed cutter according to claim 3, wherein the fixed cutter is formed of a plate disposed on the support portion 46, a cutting edge 90 is formed on the plate, and the movable cutter 88 is disposed with respect to the cutting edge 90. Apparatus for stitching cords and the like using a rotatable decorative braided wheel, characterized in that formed as a pivotable lever. 5. Apparatus according to claim 4, characterized in that the movable cutter (88) is prestressed against the stationary cutter by a spring (96). 6. Apparatus as claimed in any one of the preceding claims, characterized in that the clamping device (22) comprises a leaf spring (24). 7. Rotatable decorative plywood according to claim 6, characterized in that the cutting device (84) comprises an actuating element (26), said actuating element pressurizing the clamping device (22) for securing the beginning of the cord. A device for stitching cords and the like using wheels. 8. The switching engine (65) according to any one of the preceding claims, having a switching engine (65) operable by a control of the stitching machine so that the device can be switched on or off by the coupler (49). Apparatus for stitching cords and the like using a rotatable decorative plywood wheel, characterized in that. 9. A device according to claim 8, characterized in that said diversion engine (65) is movable by a needle rod (31) of said stitching machine. 10. Apparatus according to claim 8 or 9, characterized in that the diversion engine can be interrupted by a return device (21). 11. The method of claim 10, wherein the return device (21) has a switching rod (29) common to a plurality of stitch positions of the stitch machine for stitching cords or the like using a rotatable decorative weft wheel or the like. Device. 11. The method of claim 10, wherein the cutting device 84 and the clamping device 22 can be operated by the return device 21 to stitch the cord and the like using a rotatable decorative braided wheel or the like. Device for. 13. Rotatable decorative piece according to any one of the preceding claims, characterized in that the movable cutter (88) can be operated by the return device (21) via an adjustable rod (98). A device for stitching cords, etc. using a plywood wheel. 14. Rotatable decorative weft according to any of the preceding claims, wherein the decorative weft wheel (85) can be driven by a drive engine (17) controllable by a control unit of the stitch machine. A device for stitching cords and the like using wheels. 14. The decorative plywood wheel 85 according to any one of claims 1 to 13, by means of a drive engine disposed in the stitch machine and common to a number of stitch positions, for example a shaft or a spline shaft with a gearwheel. (19) A device for stitching cords and the like using a rotatable decorative weaving wheel, characterized in that it can drive. 16. A coupler (49) according to any one of the preceding claims, wherein a coupler (49) comprising a gearwheel as a coupler wheel (51) is provided, which coupler wheel is connected to the gearwheel or spline shaft (19) and the drive. A device for stitching cords or the like using a rotatable decorative braided wheel, etc., characterized in that the gear wheel (53) of the shaft (57) is engaged and can be released again by the return device (21). The coupler wheel 51 is supported on the pivotable lever 55 about the drive shaft 57 and is permanently engaged with the gear wheel 53 of the drive shaft 57, and the lever 55 is A device for stitching a cord or the like using a rotatable decorative braided wheel, or the like, which can be turned by a needle rod 31 directly or using a switching engine 65. Rotatable decorative, characterized in that a spring 56 is provided to secure the pivotable lever 55 in a position where the coupler wheel 51 engages with the gearwheel or the spline shaft 19 of the drive engine 15. A device for stitching cords, etc. using a plywood wheel. The lever 55 is a two-arm lever, with the coupler wheel 51 disposed on one arm 59 and the changeover engine 65 operable by the needle rod 31 or the return device 21 on the other arm 61. Is arranged, and the switching engine determines the switch-on and switch-off of the coupler (49). Drive shaft (57) is a device for stitching cords and the like using a rotatable decorative braided wheel, characterized in that coupled to the decorative braided wheel 85 through the gear device (79, 81, 87). A bevel gear 79 is arranged on the drive shaft 57, which bevel gear meshes with another bevel gear 81 connected with the toothed belt pulley 83, the belt pulley being a decorative braided wheel through the toothed belt 87. Apparatus for stitching cords and the like using a rotatable decorative weft wheel or the like, which is used to drive 85. 22. A device according to any one of the preceding claims, characterized in that a cord braking device (32) is provided. 23. The method of claim 22, wherein the cord braking device (32) includes a plurality of pins (94), and the cord is stitched around the pins using a rotatable decorative braided wheel, or the like. Device for. Stitch or quilting machine comprising at least one device (10 ') according to any of the preceding claims. A stitch or quilting machine according to claim 24, characterized in that it comprises at least one device (10) for stitching sequins or the like.

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