JPS6282997A - Stitching apparatus of multi-needle type sewing machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) What has not yet been invented is a sewing machine needle unit for attaching a sewing machine needle, a fabric support unit for holding fabric, a feed dog unit for feeding fabric, Equipped with a looper unit that guides the sewing thread to a predetermined sewing path.

This invention relates to a sewing device for a multi-needle sewing machine that simultaneously sews a plurality of parts of the fabric using a plurality of sewing machine needles while feeding the fabric.

(Prior Art) Conventionally, the sewing device of the above-mentioned multi-needle sewing machine includes a plurality of sewing machine needle attachment parts of a sewing machine needle unit, a plurality of needle holes of a fabric support unit, a plurality of serrated surfaces of a feed south unit, and a looper. The multiple loopers of the unit are each integrally provided on a common member, and the needle holes of the jut, the 1M south side, and the loopers are arranged based on the mutual spacing of the sewing machine needles attached to the multiple sewing machine needle attachment parts. The mutual spacing between the two was fixed.

(Problems to be Solved by the Invention) Therefore, it has not been possible to modify the sewing machine into a sewing device with different needle spacing by moving each individual sewing machine needle attachment portion, needle hole, serrated surface, and looper independently. In such conventional sewing devices, a spacing adjustment mechanism is provided to individually increase or decrease the spacing between multiple needle holes, serrated surfaces, loopers, etc., and to accurately align the spacing with multiple sewing machine needles. However, depending on this interval adjustment mechanism.

It is not possible to easily modify the original sewing device to one with a different needle spacing. That is, even though it is possible to set a needle spacing suitable for sewing machines with different needle spacings by greatly changing the mutual spacing between a plurality of sewing machine needles using the spacing adjustment mechanism, the fabric support unit, feed dog unit, and loop must be adjusted accordingly. It is forced to replace other parts such as the Harini knit with ones of different specifications.

Therefore, on the user's side, it is necessary to always keep a number of different types of parts for each of the two knits mentioned above in accordance with the types of needle spacing that are expected to change during sewing with a multi-needle sewing machine, which is uneconomical. Moreover, there was a problem in that it required management of unused parts.

On the other hand, for manufacturers, in order to meet the demands of users, it was necessary to manufacture many types of parts with different specifications and keep them in stock, even though they were aware of the loss.

Furthermore, as is clear from the above, each unit is not a general-purpose product that can accommodate various needle spacings, is difficult to adapt to production, and requires high processing precision and is expensive to manufacture. Therefore, each part cannot be provided at a low price, and this, combined with the above, imposes a very large economic burden on both the user and the producer. There was a problem - The present invention has a sewing machine needle attachment part, multiple needle holes of the fabric support unit, multiple serrated surfaces of the feed dog two knits, and multiple loopers of the looper unit. The purpose of this invention is to solve the above problems by making it possible to change the spacing individually, and to provide a sewing device for a multi-needle sewing machine that can be easily modified to a sewing device with different needle spacing. do.

(Means for Solving the Problems) In order to solve the above problems, the sewing device of the present invention includes a sewing machine needle unit for attaching a sewing machine needle, a fabric support unit for holding the fabric, and a sewing machine for feeding the fabric. In a sewing device for a multi-needle sewing machine, which is equipped with a feed south unit that feeds the thread, and a looper unit that guides the N thread to a predetermined sewing path, and simultaneously sews multiple locations on the fabric using a plurality of sewing machine needles while feeding the fabric. , each of the above units has a plurality of movable bodies slidably supported by a common guide, and a slide position fixing means is provided for each of the plurality of movable bodies, and 1
- Each of the plurality of movable bodies of at least one of the units described above is provided with a gauge function, and the movable body of the sewing machine needle unit is capable of attaching and detaching a single sewing machine needle,
The movable body of the fabric support unit has a single needle hole into which a sewing machine needle is inserted and removed, the movable body of the feed unit has a serrated surface that engages with the fabric, and the movable body of the looper unit has a single needle hole into which a sewing machine needle is inserted and removed. It has a gist in its points.

(Function) In the above configuration, if each of the plurality of movable bodies is individually slid along a common guide and these movable bodies are fixed at an arbitrary position, the mutual spacing between the movable bodies is restored to the original. Set to something different than the interval. Here, the movable body is configured such that the sewing machine needle is removably attached to the sewing machine needle unit, the fabric support unit has a needle hole through which the sewing machine needle is inserted, and the feed south unit has saw teeth that engage with the fabric. Since it has a surface and a looper in a looper unit, if the mutual spacing of the movable bodies is set to be different from the original spacing as described above,
The sewing device itself is modified to have a different needle spacing.

Furthermore, since the plurality of movable bodies of at least one of each unit is equipped with a gauge function, the movable body itself can be used as a gauge, and the movable bodies of other units can be measured using this movable body as a reference. By aligning the needles, it is possible to easily obtain a sewing device with a desired needle spacing specification.

(Example) Hereinafter, embodiments of the tree design will be described with reference to the drawings.

FIG. 1 is a perspective view of a sewing device showing an embodiment of the present invention, in which 100 is a sewing machine needle unit, 200 is a fabric support unit, 300 is a feed dog unit), and 400 is a looper unit.

FIG. 2 is an exploded perspective view of the sewing machine needle (22) 100. The sewing machine needle unit lOO includes a plurality of needle holders 1
10 and a needle stock 120 that slidably supports these needle holders 110. The needle stock 120 has an elongated guide hole 121 and a protrusion 122 extending in the longitudinal direction. A vertical through hole 111 is formed in the needle holder 110, and the sewing machine needle 1 inserted into the through hole 111 is fixed by a set screw 112. Also, needle holder 1
10 can be slid onto the needle stock 120 by fitting its recess 113 into the protrusion 122 of the needle stock 120 and screwing the retaining screw 114 inserted into the guide hole 121 of the needle stock 120 into the threaded hole 115 of the needle holder 110. When the cap screw 114 is loosened, the needle holder 114 becomes able to slide while being guided by the guide hole 121 and the protrusion 122, and when the cap screw 114 is tightened, it is fixed at the tightened position. Therefore, when a plurality of needle holders 110... are supported by the needle stock 120 as clearly shown in the figure, each of the presser screws 114...
The mutual spacing between the needle holders 110 can be arbitrarily set by loosening the screws 114, and each needle holder 110 can be fixed at an arbitrary set position by tightening the retaining screws 114. Also, the sewing machine needle l.

By tightening or loosening the setscrews 112, the plurality of needle holders 110 are individually attached and detached one by one.

In such a sewing machine needle unit 100, the attachment shaft 123 of the needle stock 120 is connected to a reciprocating drive mechanism.

: Figure 53 shows the fabric support unit) 200 main body part, 4th
The figure is an assembled perspective view showing the needle plate portion.

The main body of the fabric support unit 200 is a rectangular support plate 21.
0 and a plurality of presser feet 220 supported by this support plate 210
Equipped with. The presser foot 220 is slidably supported on a horizontal shaft 230 provided on the support plate 210, and its head 2
21a is inserted into a long hole 211 formed in the support plate 210. In this embodiment, the presser foot 220 is divided into an arm portion 221 and a mounting portion 222 connected to the arm portion 221 via a pin 223 so as to be relatively swingable. It is configured to be fixed to the horizontal shaft 230 by. Further, a torsion spring 22B is held by a pin 225 provided on the mounting portion 222, and the arm portion 221 is always urged downward by the torsion spring 22B.

In the main body portion having such a configuration, a plurality of presser feet 2 are used.
20, each presser foot 220 is slid to an arbitrary position using the horizontal shaft 230 as a guide.

It is possible to freely set their mutual spacing.

Further, by tightening the t+ female screw 224, the presser foot 220 can be fixed at the set position.

Next, the above-mentioned throat plate portion is formed by attaching a plurality of throat plates 250 to a rectangular mounting frame 240, as shown clearly in FIGS. 4 and 5. That is, the mounting frame 240 is provided with a guide @241 having a long hole 242.

The needle plate 250 is slidably attached to the guide shaft 241. Then, when the setscrew 252 screwed onto the throat plate 250 is loosened, the throat plate 250 moves to the guide shaft 241.
When the set screw 252 is tightened, the needle plate 250 is fixed to the guide shaft 241.

Therefore, the mutual spacing between the plurality of throat plates 250 can be arbitrarily set with the setscrews 252 loosened, and can be fixed at the set positions by tightening the setscrews 252. Moreover, one needle hole 251 is provided in one needle plate 250.

6 and 7 are assembled and exploded perspective views of the feeder unit 300. The feed dog unit 300 has a guide plate 31
A plurality of feed dogs 320 are slidably attached to the feed dog 0. The feed dog 320 has a serrated surface 321 that engages the fabric only in one direction, and can slide along the guide plate 310 by loosening the set screw 322, and by tightening the set screw 322, the guide plate 310 can be moved at that position. The configuration is fixed. Therefore, when the set screw 322 is loosened, the mutual spacing between the plurality of feed dogs 321 can be set arbitrarily,
Tightening the setscrew 322 fixes it in that position.

8 and 9 are perspective views of the looper unit 400. The looper unit 400 includes a plurality of loopers 410
... are attached to the guide plate 420. The individual loopers 410 can be slid along the guide plate 420 by loosening the setscrews 411, and are fixed to the guide plate 420 by tightening the setscrews 411. Therefore, when the set screw 411 is loosened, the mutual spacing between the plurality of loopers 410 can be arbitrarily set, and when the set screw 411 is tightened, the loopers 410 are fixed at that position.

The sewing machine needle explained above 2) 100. fabric support unit 200, feed south unit 300 and louver unit)
As shown in FIG. 1, the sewing machines 400 are arranged in a predetermined relationship, and by applying a predetermined movement to each part, it is possible to simultaneously sew a plurality of parts of the fabric. In this case, the presser foot 220 of the fabric support unit 200, the feed dog 320 of the feed unit 300, and the looper 410 of the looper unit 400 correspond to each of the needle holders 110 of the sewing machine needle unit 100.

In the sewing device of the present invention, each unit has a plurality of movable bodies slidably supported by a common guide, and each of the plurality of movable bodies is provided with a slide position fixing means.

In the embodiment with the above configuration, the following elements correspond to the movable body. That is, the needle boulder 11 of the sewing machine needle unit 100
0, presser foot 220 and throat plate 2 of fabric support unit 200
5o, feed *320 of the feed dog unit 300, and looper 410 of the looper unit 400. Additionally, the following elements correspond to the common guide: That is, the guide hole 121 and the protrusion 122 of the sewing machine needle unit 100, the horizontal shaft 230 and the guide shaft 241 of the fabric support unit 200, the guide plate 31G of the feed south unit 300, and the guide plate 420 of the looper unit 400. Furthermore, the following elements correspond to the slide position fixing means. That is, the presser screw 114 of the sewing machine needle unit +-100, the fabric support unit 20
0 set screws 224, 252, feed south unit 30G
and the set screw 411 of the looper unit 400.

In the above, for example, the mutual spacing between the plurality of throat plates 250 of the fabric support 22) 200 is changed, and the needle holder 110 of the sewing machine needle unit 100, the IO
Presser foot 220 of ground support unit 200. Feed W1320 of the feed dog unit 300. The looper 410 of the looper unit 400 is aligned. In this way, the needle spacing is set based on the mutual spacing between the needle plates 250, and it becomes possible to simultaneously sew multiple locations on the fabric while maintaining that spacing.

Next, a method for modifying the sewing device will be described using the throat plate 250 as an example.

For example, when modifying the sewing machine to have needle spacings of s, IS21sI, and S4, throat plates 250a, 250b, and 250c corresponding to 6 needles are used as shown in FIG. 12(A).
, 250d.

A predetermined gauge or spacer (hereinafter referred to as
) 10a, 10b, both of which are collectively referred to as spacers.
, 10c.

By interposing 10d, the needle hole 25! . . . The intervals are sl, s2 . . . corresponding to the needle intervals. Change to s, , s4.

Such a method is commonly practiced. and,
In such a modified sewing device, for example, when the needle l corresponding to the throat plate 250b is removed from the needle holder 110, the needle l corresponding to the throat plate 250b is removed.
0b does not perform the original function of the throat plate, but functions as a spacer, and the needle spacing S, (=Ss +S2)
, S1*S, is modified into a sewing machine. In such a case, a normal method would require a spacer to obtain the needle hole spacing S, but since the needle 250b functions as a spacer as described above, the spacer is not required, and the needle plate itself No adjustment is required at all. Also, spacers 10a, 10b, 10c.

10d is not used at all, as shown in FIG. 12(B), the needle plates 250a, 250b, 250c, 2
Needle hole interval S corresponding to the width dimension of 50d and 250e...
It can be converted into a sewing machine. In this case, each throat plate has both the original function of the throat plate and the function of a spacer.

In this modified sewing device, if, for example, the throat plate 250b is not made to function as a throat plate, that is, the corresponding needles are removed, the sewing device can be modified to a sewing device with needle spacing of 2S, S, S. In this way, by making the throat plate eye function as a spacer, it is possible to modify the machine to a far greater variety of N-made machines, that is, multi-needle sewing machines, depending on the type of spacer used. These things are exactly the same when the widths of all throat plates 250, that is, the widths of the portions that can function as spacers, are not equal, that is, when a plurality of different types of throat plates are used.

As a basic shape of the throat plate 250, for example, the shape shown in FIG. 13 can be considered. That is, the first needle plate 250A has a pair of needle holes 251, 251 formed in parallel.

- A pair of notches fjl1253a, 253a are formed at the side ends and the center to allow the feed dog to face. The second throat plate 250B has a wider notch M 253b formed at its negative end than the first throat plate 253a, and the third throat plate 250B
50C is a notch 2 wider than this notch 253b.
53C, and the fourth needle plate 250D has a notch 253c having the same shape as this notch 253c formed in the center. In addition, in FIG. 13, 254
, 255 are throat plate regulating plates disposed on both sides of the throat plate 250 group, and one throat plate regulating plate 255 has a notch 253d for a feed dog formed at one end thereof. by the way,
The shape of the feed@320 is set according to the shape of the notch of the throat plate.For example, as shown in FIG.
Feed 1320A is applied to the first needle plate 250^, second feed @32
0B is attached to the second throat plate 250B, and the third feed dog 320C is attached to the third needle plate 250B.
The shapes of the fourth needle plates 250G and 2500 and the fourth feed dog 320D correspond to the needle plate regulating plate 255, respectively. Therefore, for example, the first to fourth needle plates 25
0A to 250D and throat plate regulating plates 254, 255 to the 13th
When the arrangement is as shown in the figure, the first to fourth feed fa
320A to 3200t-t514 The arrangement is as shown in FIG.

Note that other elements, such as the needle holder 110 of the sewing machine needle unit 100 and the presser foot 22 of the fabric support unit 20G,
It is of course possible to use the same method as the needle plate 250 for the 30G feed dog 320 and the looper 410 of the looper unit 400, and in these cases, the needle holder 110° presser foot 220, feed dog 320, and looper 410 are each configured to have a gauge function.

Next, a sewing device including the spreader unit 500 shown in FIGS. 1θ and 11 will be described.

In this type of sewing device, the configurations of the sewing machine needle unit, fabric support unit, throat plate unit, feed dog unit, and looper unit are the same as those in the above embodiment, so similar parts are denoted by the same reference numerals and detailed explanations and illustrations are omitted. Omitted.

The spreader unit 500 includes a plurality of spreaders 520 attached to a guide plate 510. and.

When the set screw 530 is loosened, the spreader 520 can slide along the guide plate 510, and when the set screw 530 is tightened, the spreader 520 is fixed to the guide plate 510 at that position.

Therefore, the plurality of spreaders 520...

Any mutual spacing can be set by loosening the set screw 530, and the set screw is fixed at the set position by tightening the set screw 530.

In the above, the movable body corresponds to the spreader 520,
The guide plate 510 corresponds to the common guide, and the set screw 530 corresponds to the slide position fixing means. Further, the fact that the spreader 520 can be provided with a gauge function, and the method of modifying the sewing device using this, are the same as described above.

(Effects of the Invention) According to the present invention, it is possible to easily modify a multi-needle sewing machine of a completely different type from the original one, and also of various types, without replacing the constituent members of the N-made device. Therefore, with one multi-needle sewing machine.

Just like having a large number of different types of sewing machines on hand, it is possible to immediately respond to all sewing needs, which has the practical benefit of greatly reducing the economic burden for both users and producers. .

Moreover, is it a conventional M product that allows each movable body in the unit to have a gauge function? By adding a configuration that has never been imagined to the bottom of the tW1, a far greater variety of modifications can be realized with respect to the type and number of gauges or spacers used.

In other words, the type and number of gauges or spacers required for such modification can be greatly reduced, and the above-mentioned practical benefits can be further expanded. .

[Brief explanation of drawings]

FIG. 1 is a perspective view of a sewing device showing an embodiment of the present invention, FIG. 2 is a partially exploded perspective view of a sewing machine needle unit, FIG. 3 is a partially exploded perspective view of the main body of a fabric support unit, and FIG. 4 is an assembled perspective view of the throat plate portion of the same unit, FIG. 5 is an exploded perspective view of the same throat plate portion, FIG. 6 is an assembled perspective view of the feed dog unit, FIG. 7 is an exploded perspective view of the same unit, and FIG. The figure is an assembled perspective view of the looper unit, Figure 9 is an exploded perspective view of the same unit, Figure 10 is a partially exploded perspective view of the spreader unit,
Figure 11 is a sectional view of the same unit, Figure 12 (A) (B
) are explanatory diagrams showing different modification examples of the sewing device using the throat plate as an example, FIG. 13 is a plan view showing an example of the basic shape of the throat plate, and FIG. FIG. 7 is a plan view showing an example of the basic shape of a corresponding feeder. 1... Sewing machine needle, 10a, 10b, lOc, lOd
-Spacer, 100... Sewing machine needle unit, 110...
...Needle holter 1114...Press screw, 121...
Guide hole, 122...projection. 200... Fabric support unit, 220... Presser foot,
224... Set screw, 230... Horizontal shaft, 241...
・Guide shaft, 25o. 250a, 250b, 250c, 250d
, 250e, 250A, 2508, 250G,
2500... Throat plate, 252... Set screw, 300.
...Feed dog unit, 31G ...Guide plate, 32
0.32OA, 320B, 320G, 3200...
Feed dog, 322... Set screw, 400... Louver unit, 41 G... Le, -bar, 411... Set screw, 420... Guide plate Patent applicant Moriki Seisakusho Co., Ltd. Agent Patent attorney Takashi Suzue - 113 Figure 6 Figure 7 Figure 13 Figure 14

Claims (1)

[Claims] (1) A sewing machine needle unit for attaching the sewing machine needle,
It is equipped with a fabric support unit that holds the fabric, a feed dog unit that feeds the fabric, and a looper unit that guides the sewing thread to a predetermined sewing path. In a sewing device for a multi-needle sewing machine that simultaneously sews, each unit has a plurality of movable bodies slidably supported by a common guide, and a slide position fixing means is provided for each of the plurality of movable bodies, Each of the plurality of movable bodies of at least one of the above units is equipped with a gauge function, the movable body of the sewing machine needle unit is capable of attaching and detaching a single sewing machine needle, and the movable body of the fabric support unit is equipped with a sewing machine needle. A multi-needle sewing machine characterized in that the movable body of the feed dog unit has a serrated surface that engages with fabric, and the movable body of the looper unit has a looper. sewing equipment.