KR20160088868A - Embroidery sewing machine comprising perforating head - Google Patents

Abstract

An object of the present invention is to provide an embroidery sewing machine capable of sewing an embroidery sewing machine while moving and controlling the workpiece in a two-dimensional direction, such that the embroidery sewing machine can perform a processing suitable for a workpiece having a relatively high rigidity and a high needle- In the embroidery sewing machine, in addition to the ordinary embroidery head 3, a perforation head 4 including vertically moving rods 4a and cloth tools 21 provided at the tip of the rods, And a pedestal (35) for receiving the cloth tool lowered in accordance with the lower movement of the rod. At least one of embroidery sewing and perforation formation is performed on the workpiece (H) by selectively using one of the embroidery head and the perforation head. For example, a desired perforation shape is formed on a workpiece using a perforated head, and then embroidery stitching is performed on at least a part of perforations formed in the workpiece using the embroidery head.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an embroidery machine having a perforation head,

The present invention relates to an embroidery sewing machine capable of embroidery patterns of a plurality of colors (colors) on a workpiece by selecting a plurality of needle bars, wherein a perforation blade for perforating the workpiece The present invention relates to an embroidery sewing machine having a perforation head for driving a punch.

When sewing embroidery or the like on a workpiece having a relatively high rigidity such as leather or the like and having a large needle resistance, there is a case in which the lower thread is pulled out to the surface or the knot is loosened, many. This is considered to be one factor that the leather or the like causes fluttering at the time of foot striking because the resistance of the sewing needle at the time of stitching with the leather or the like is large.

As a means for solving the above-mentioned problem in the industrial sewing machine, it is considered to make the lower and lower holes in advance at the places where the needles fall on the leather or the like so that the inserting and catching can be performed without resistance. As shown in Document 1, prick punch needles are provided at predetermined intervals in the horizontal direction from a sewing needle on a needle stitch for fixing a sewing needle at the lower end of a needle bar.

According to this configuration, when the sewing needle is lowered, the flick-punch needle also descends in front of the sewing needle, so that the lower hole is drilled in the position immediately before the sewing object in the traveling direction. There is no problem, and a nice stitch is formed. However, unlike the industrial sewing machine in which sewing is performed only in a one-dimensional straight line direction, in the embroidery sewing machine, sewing is performed while controlling movement of the workpiece (work piece) in two- The flick-punch needle can not be placed on the needle.

Patent Document 1: Japanese Utility Model Publication 63-123284

The present invention has been made in view of the above points, and an object of the present invention is to provide an embroidery sewing machine suitable for a workpiece having a relatively high rigidity, such as leather, and a high insertion resistance.

The embroidery sewing machine according to the present invention is characterized in that it comprises an embroidery head including a vertically moving needle bar and a sewing needle provided at the tip of the needle bar, And a pedestal disposed at a lower portion of the perforation head and adapted to receive the cloth tool lowered in accordance with the movement of the lower portion of the bar, wherein one of the embroidery head and the perforation head is selectively used Wherein at least one of embroidery sewing and perforation formation is performed on the workpiece.

According to the present invention, since the embroidery head and the perforation head are juxtaposed, when the embroidering is performed on a workpiece having relatively high rigidity such as leather or the like and having a large needle resistance, And the embroidery head is then used to embroider embroidery on at least a part of the perforations formed in the workpiece. Therefore, embroidery sewing for a workpiece having a relatively high rigidity such as leather or the like and a high insertion resistance can be easily performed with high quality. That is, the sewing thread of the finishing can perform the embroidery and sewing cleanly.

In one embodiment, the perforation head may include a plurality of bars provided at the tip of the cloth tool (punch) of different types, and any one of the bars may be selected and moved up and down. As a result, for example, a cloth tool (punch) to be attached to the lower end of each of the rods of the perforation head is mounted with a different hole diameter, and a cloth tool of an arbitrary diameter is selected by selection of the rods, You can drill a hole. In addition, various cloth tools (punches) having different hole shapes and sizes are attached to the lower ends of the rods of the perforation head, and perforations are made while the cloth tools are replaced by rod selection according to the program, Ornaments arranged in a shape can also be created.

1 is a front view of a sewing machine according to one embodiment of the present invention.
2 is a plan view of an embroidery sewing machine.
3 is a front view of the punch head and punch receiver.
4 is a side sectional view of the punch stand.
5 is a plan view of the punch stand.
6 is a front view of the punch.
7 is a side sectional view showing a mounting state of the punch to the needle bar;
8 is an exploded perspective view showing a setting procedure of a workpiece (leather) to a holding frame and a frame holding body.
9 is an enlarged cross-sectional view partially showing a state in which a holding frame with a workpiece (leather) is set on the frame holding body.
10 is a perspective view when a receiving sheet is set below a workpiece (leather);
11 is a plan view of a workpiece (leather) having perforated and embroidered stitching.

As shown in Figs. 1 and 2, an embroidery head (nine needles in this example are provided) for performing normal embroidery on the front face of the upper frame 2 of the embroidery body 1, (3) and a perforation head (4) next to the perforation head (4) are provided at appropriate intervals. At the lower portion of the embroidery head 3, a table 35 for supporting a known kiln for sewing in cooperation with a needle bar is disposed below the sewing machine table 6, The upper surface is covered with a needle plate (7). Below the perforation head 4, a receiving base 8 supporting a punching table 35 described later is similarly arranged below the sewing machine table 6. The upper surface of the receiving base 8 is covered with a lid plate 10.

On the table 6, an X-directional driving body 11 and a Y-directional driving body 12 are arranged. The X-direction driving body 11 is connected to the X-driving portion 14 fixed to the lower frame 13 at the lower portion of the sewing machine table 6 via the table cover 15. The Y-directional driving body 12 is similarly connected to a Y-driving portion 16 fixed to the lower frame 13 at the lower portion of the sewing machine table 6 via a table cover 17. 2, the X-directional driving body 11 and the Y-directional driving body 12 are three-dimensionally intersected, and the Y-directional driving body 12 is positioned above the X-directional driving body 11 have. The frame holders 18 are connected to both the driving bodies 11 and 12 (see also Figs. 8 and 10).

The frame holder 18 has a rectangular frame shape placed on the sewing machine table 6. A pair of neighboring pieces are arranged in the X direction drive unit 11 and the Y direction And is connected to the driving unit 12. As shown in Fig. 8, the connection is achieved by engaging the right-hand piece connecting portion 18a with the X-direction driving portion 11 and the rearward piece connecting portion 18b with the Y-direction driving portion 12 . The frame holder 18 is configured to move in the X-Y direction by driving the X-direction drive section 11 and the Y-direction drive section 12 by a drive signal transmitted based on the data selected and instructed from the operation panel 20 And is driven to move.

The embroidery sewing machine according to the present embodiment is provided with a control device (not shown) including a microprocessor or a dedicated circuit that operates in accordance with a software program, and performs various operations (embroidery sewing operation And the puncturing process operation) are executed in accordance with the control of the control device. In that case, the various operations described in this specification can be described as instructions for a software program, which can be stored non-volatile or non-transiently in a computer readable storage medium.

Next, the piercing head 4 will be described with reference to Figs. 1, 3 to 7, and the like. The perforation head 4 has substantially the same outer shape as the embroidery head 3 but has a structure in which a balance or yarn path is removed from the needle bar case of the embroidery head 3, (3), and the driving structure of the needle bar (4a) is exactly the same as that of the embroidery head (3). In the perforation head 4, a punch (cloth tool) 21 is mounted at the lower end of each needle bar 4a in place of the sewing needles. Since the needle bar 4a of the perforation head 4 is not provided with a needle, it is also referred to simply as a " rod ". 6, the punch 21 is formed by forming a perforated blade 21a (in this example, a circular blade having a circular planar shape) at the lower end of the main body 21b, And a mounting portion 21c having a reduced diameter is formed. The mounting portion 21c of the punch 21 is inserted into the center hole 4b at the lower end of the rod 4a and the screw 23 of the needle holder 22 is inserted By firmly tightening the punch 21, the punch 21 is fixed to the lower end of the rod 4a.

3, a punch (cloth tool) 21 is attached to all the needle bar 4a of the perforating head 4, but it may be mounted only on a part of the needle bar 4a, Various punches 21 may be mounted even if the planar shape of the upper surface 21a is different (for example, a triangle, a quadrangle, a pentagon, an ellipse, a star Okay. 1, the embroidery head 3 and the needle bar changing device 9 for selecting the needle bar 4a of the perforation head 4 are provided on the front face of the upper frame 2 .

Next, a description will be given of the receiving base 8 provided at the lower part of the perforation head 4 with reference to Figs. 3 and 4. Fig. A bottom plate 8a and a side plate 8b fixedly mounted on both sides of the top plate 8b and a supporting plate 8c extending over the side plate 8b constitute the base of the receiving base 8, As shown in Fig. Four guide rods 25 in total are guided to the support plate 8c by a sleeve 26 which is inserted into the bottom plate 8a at a predetermined interval so as to be slidable in the vertical direction, And a holding plate 27 is mounted on the upper end by a screw 28. A compression coil spring 30 is fitted between the support plate 8c and the retaining plate 27 in each of the guide rods 25 and the retaining plate 27 is moved upward by the urging force of the compression coil spring 30 .

The stopper screw 31 is fixed (locked by the lock nut 31a) at the center position of the four guide rods 25 and the lower end of the stopper screw 31 is fixed to the bottom surface of the holding plate 27 by the through- Hole 32), and a nut 33 is screwed on the protrusion. By the tightening of the nut 33, the position of the holding plate 27 pressed upward is adjusted. A blind hole (or concave portion) 36 is formed on the upper surface of the holding plate 27. A punch stand (pedestal) 35 made of brass is fitted to the on-coming attack 36. The upper end of the punch table 35 has a reduced diameter and the reduced diameter portion is engaged with the opening 10a of the cover plate 10 which is covered with the holding plate 27 Thus, the punch rest 35 is prevented from falling off from the on-attack punch 36. The cover plate (10) is screwed to the holding plate (27).

The corresponding position of the punch 21 with respect to the punch table 35 is indicated by p in Fig. 4 (side sectional view) and q in Fig. 5 (plan view) The punch rest 35 is slightly moved downward (about 0.5 millimeters) when the punch 21 of the punch 21 comes into contact with the punch rest 35. When the punch rests on the punch rest 35, And the height is set by adjustment of the nut 33. Here, when the punch table 35 is moved downward, the holding plate 27, the cover plate 10 screwed thereto, and the guide rods 25 move down together.

As the drilling operation proceeds (the number of drilling operations is increased), a recess (trace of the drilling blade 21a) is formed on the upper surface of the punching table 35 by abutment of the drilling blade 21a (The position of q in Fig. 5). Therefore, when the number of perforations exceeds a certain number of times, the punch rest 35 is prevented from moving down even when the perforating blade 21a reaches the bottom dead center. At this point, there is no contact sound, but perforation is done correctly. When the punches 21 having different sizes and shapes of the punching blades 21a are selected and punched, the punching table 35 is slightly rotated using the driver grooves 35a formed on the upper surface of the punching table 35 , And the abutting position of the perforating blade 21a is changed.

2, a holding frame 40 for holding a workpiece such as leather is held by the frame holding body 18 and moves two-dimensionally along the frame holding body 18. As shown in FIG. Referring to the exploded perspective view of Fig. 8, a procedure for setting the leather sheet H as an example of the workpiece to the holding frame 40 will be described first. The holding frame 40 is a well-known frame body called an angle frame, and has a protruding portion 40a for holding a workpiece in its inner periphery. The leather sheet H is laid on the holding frame 40 and the lock lever 60a is operated by covering the projections 40a on the four sides of the holding frame 40 in correspondence with the respective clips 60, Is fixed to the holding frame (40). As a result, the leather sheet H, which is a workpiece, is spread on the holding frame 40. In Fig. 8, for convenience, only one clip 60 is shown, but the leather sheet H is clipped on each side, so that a total of four clips 60 are used. Of course, the present invention is not limited to the example in which one side is fixed by one clip 60, and one side may be fixed using a plurality of short clips 60.

A frame size adjusting bar 41 in the X direction and a frame size adjusting bar 42 in the Y direction are mounted on the frame holder 18 so as to be positionally adjustable. The frame 50 is provided on the inner side of the frame holding member 18 via these frame size adjusting bars 41 and 42. The holding plate 50 is made of a thin plate having a large rectangular window hole 50a, and the holding piece 51 is screwed to the upper surface of its periphery (four sides). The holding members 51 of two adjacent sides are screwed to the corresponding two sides of the frame holding member 18 via a suitable number of mounting bars 52 in the holding unit 50, The holding pieces 51 are screwed to the corresponding frame size adjusting bars 41 and 42 via a suitable number of the mounting bars 52. [ Thereby, as long as the size of the frame holding body 18 allows, the holding frame 50 of an arbitrary size can be fixed to the inside of the frame holding body 18. The holding plate 50 is prepared in accordance with the size of the holding frame 40 to be used and the leather sheet H is exposed from the sprue 50a when the holding frame 40 is set.

In the embodiment shown here, the holding frame 40 is set by being placed on the holding frame 50 of the frame holding member 18. [ When the holding frame 40 is placed on the holding plate 50, the peripheral edge of the holding frame 40 is tapered from the tapered surface of the plurality of guide members 53 fixed on the upper and lower surfaces of the holding piece 51 53a so as to be appropriately set on the holding plate 50 (see FIG. 9). After the holding frame 40 is set in the holding block 50, the handle 54a of the plurality of lock claws 54 mounted on each holding piece 51 is rotated 90 degrees counterclockwise in Fig. 8 , The lock claw 54 pushes the holding frame 40 and the holding frame 40 is firmly held in the holding frame 50 or the frame holding member 18 as shown in Fig. . The lower surface of the holding plate 50 is provided with a sliding member 55 made of felt, cork or the like so as not to come into direct contact with the sewing machine table 6.

Next, a processing method for the workpiece will be described. The data for embroidery creation is prepared in advance in accordance with the embroidery pattern to be embroidered on the leather sheet H which is the workpiece and the created embroidery data is input via the operation panel 20 of the embroidery machine 1. 11 shows an example of the embroidery pattern to be applied to the leather sheet H. Fig. The embroidery pattern of this embodiment is such that the embroidery thread 62 is stitched so that the needles are dropped on the perforations 61 of a number of perforations 61 and a part thereof as shown in Fig. 11 (a).

As a processing step, first, frame shift control is performed so as to make the die holder 18 correspond to the perforation head 4, and while the die holder 18 is two-dimensionally moved along the embroidery pattern data, As shown in Fig. 11 (b), the perforation head 4 carries out all necessary perforations on the leather sheet H on the holding frame 40 (formation of a perforated shape). Next, the frame shift control is performed so as to correspond the frame holding body 18 to the embroidery head 3, and embroidery stitching is performed while moving the frame holding body 18 two-dimensionally in accordance with the embroidery pattern data The embroidery sewing operation is performed only for a predetermined perforation (at least a part of the perforation in the formed perforation). This series of operations is automatically performed according to the initial information included in the data.

According to the present invention, since the stitching by the embroidery thread is performed so that the needle is dropped in the hole that has been previously drilled, the resistance of the stitching needle and the stitching on the stitching can be reduced, So that a neat stitch can be formed.

It is possible to set the various punches according to the thickness of the embroidery thread to the plurality of needle bar 4a of the perforation head 4 and to perform the optimum perforation by changing the punch used by the needle bar selection operation, Thus, optimum stitching can be performed.

In the above embodiment, the embroidery thread is sewn after perforation. However, it is also possible to select the embroidery processing method that stops the embroidery thread only after perforation. In this case, if various punches having different sizes and shapes are set on each needle bar, various kinds of perforated ornamental patterns (decorative patterns made of only perforations) can be formed by the selection process of the needle bar.

10, a receiving sheet 65 made of a resin (resin) having a thickness of about 0.5 mm is placed on the holding plate 50 of the frame holding member 18, and the receiving sheet 65 , The holding frame 40 holding the leather sheet H may be set. The receiving sheet 65 has a hardness necessary for receiving the leather sheet H without deforming the holding frame 40 holding the leather sheet H and can be easily pierced by the punch 21 descending It is made of materials with vulnerability. Even if the height of the punch rest 35 is set to be lower than the height in the above embodiment, the perforation blade 21a penetrates the receiving sheet 65, And the noise during drilling is also suppressed. When embroidery is to be performed after finishing the perforating operation, the holding frame 40 is once removed, the receiving sheet is removed, and the holding frame 40 is set again. Since the receiving sheet 65 is perforated, it is preferable to change the leather sheet H every time the leather sheet H is exchanged. This method has an advantage that a punch mark is not formed on the punch table 35. In order to avoid a portion where a punch mark is formed, every time the punch 21 is replaced, May be omitted.

As described above, in each of the above embodiments, since the holding frame 40 for holding the workpiece is placed on the holding frame 50 mounted on the frame holding member 18, the receiving sheet 65 can be used There is an advantage to be able to. However, if the receiving sheet 65 is not to be used, the holding frame 40 may be directly attached to the frame holding member 18 without using the holding frame 50. [ In this case, the retaining bar 50, the retaining bar 51, the mounting bar 52, and the frame size adjusting bars 41 and 42 are unnecessary, It is necessary to provide a suitable mounting member.

In the above embodiment, only one pair of the embroidery head 3 and the perforation head 4 are provided in the embroidery sewing machine, but the present invention is not limited to this. In a single embroidery machine, a plurality of pairs of embroidery heads 3 and 4 ) May be provided.

Claims (6)

An embroidery head including a vertically moving needle bar and a sewing needle provided at the tip of the needle bar,
A perforating head including a vertically moving rod and a cloth tool provided at the tip of the rod,
And a pedestal disposed at a lower portion of the perforation head and adapted to receive the cloth tool lowered in accordance with the movement of the rod,
Wherein one of the embroidery head and the perforation head is selectively used to perform at least one of embroidery sewing and perforation formation on the workpiece. The method according to claim 1,
A control device is further provided for controlling the embroidery head to form embroidery stitches on at least a part of the perforations in the perforated shape formed in the workpiece after the perforation head is formed in the workpiece using the perforation head Embroidery sewing machine. The method according to claim 1,
Further comprising a control device for forming a perforated pattern on the workpiece by using the perforating head and controlling the embroidery pattern to be formed only in a perforated pattern. The method according to any one of claims 1 to 3,
Wherein the perforation head includes a plurality of bars each provided with a cloth tool of a different type at the tip thereof, and one of the bars is selected and moved up and down. The method according to any one of claims 1 to 4,
Wherein the pedestal is configured to elastically receive the cloth tool. The method according to any one of claims 1 to 5,
A holding frame for spreading and holding the workpiece;
And a receiving sheet for supporting the holding frame so as to move integrally with the holding frame, the receiving sheet further comprising the receiving sheet made of a material having a vulnerability to allow penetration of the clothing tool.

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