JPS6264392A - Stitch 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 (Field of Industrial Application) The present invention relates to a stitch sewing machine that can form novel stitch patterns.

(Prior Art) In general, a stitch sewing machine sews visually decorative continuous stitches in the form of a tuft on the periphery of a handkerchief, skirt, etc., in which stitches are connected in a chain.

And, this type of stitch sewing machine has traditionally had one model and one
This is a specialized machine for stitch sewing, and only a few machines exist for this stitch sewing type.

Therefore, it has been limited both in terms of use and marketability.

([1st point]) The present invention is based on the above! This design was developed with special consideration in mind, and its purpose is to provide a stitch sewing machine that can form new stitch patterns.

(Means for Achieving the Object) In order to achieve the above object, the present invention provides a speed measuring gJ' for the needle bar.
A needle bar moving mechanism that causes the needle bar guide member held in the heel to move laterally, a looper moving mechanism that allows the looper to move laterally in response to the lateral movement of the needle bar, and an operating source of the feeder. A vertical piece, which is one side of the U-shape, is fixed to the shaft end of the swinging power transmission shaft so as to be orthogonal to the axis of the swinging power transmission shaft. A control shaft is slidably engaged with the guide hole, and the control shaft is moved to a neutral position corresponding to the axis of the rocking force transmission shaft by following the cam groove of the third cam plate. The feed dog control mechanism includes a feed dog control mechanism that stops or activates the feed dog by sliding it into the guide hole between a non-neutral position separated from the axis of the swinging force transmission shaft, and the feed dog control mechanism includes a rotation A plurality of rotation transmission shafts having different speeds are provided, and a predetermined third cam plate is attachably attached to each rotation transmission shaft.

(Function) By replacing the third cam plate and by attaching the third cam plate to rotation transmission shafts with different speeds, a new multi-stitch sewing pattern can be applied to the N product. N
Can be manufactured.

(Example) Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is a simplified perspective view showing the tii manufacturing part of the stay 7 sewing machine, l is a needle bar, and a sewing machine needle 3 is attached to a needle stock 2 provided at the tip of the needle bar. 4 is a presser foot, 5 is a throat plate, and four claws 8 are arranged in parallel at equal intervals through an opening formed in the center thereof. Reference numeral 7 designates a feed dog disposed at an opening on the left side of the central opening of the throat plate 5.

Here, in the N sewing section, the sewing machine needle 3 is inserted between the claws 8...
The object is to attack the Shogunate by moving in the direction of the arrow in the figure.

In addition, the looper 8 placed under the needle plate 5 in response to the attack on the sewing machine needle 3 has been relocated! e machine MB (3rd
(see figure), the sewing machine needle 3 moves in response to the attack. The feed dog 7 is controlled via a feed dog control g# mechanism C (see FIG. 6) to determine the amount of feed or to not feed at all.

The needle bar moving mechanism ^ rotates the first rotating shaft 3 as shown in FIGS. 3 and 4, thereby moving the needle bar moving mechanism 11! Direct link I
The needle bar guide member 13 is laterally movable via the O1 transmission link 11 and the horizontal rod 12, and the first copying link has a rolling contact roller I8 copying the cam groove surface 15 of the first cam plate 14. 17 is connected to the first rotating shaft 9 to give the first rotating shaft 9 the amount and direction of rotation that can be learned by the cam groove surface 15, and thereby the needle bar guide member 13 The place! JiIi allows for horizontal movement. Here, the vertical link IO is fixed to the :51 rotation shaft 9 and rotates integrally with the first rotation shaft 9. Further, as shown in the figure, an arc-shaped elongated hole 18 is bored in the vertical link IO, and the transmission link 1 is inserted into this elongated hole 18.
A pin shaft 19 attached to one end side of 1 is fitted. moreover.

The other end of the transmission link 11 is rotatably connected to the horizontal rod 12.

The needle bar guide member 13 holds the needle bar 1 inserted into the holding hole 20 as shown in the figure, and the needle bar 1
An operating link 24 of a needle raising movement mechanism 23 that converts rotational force into vertical movement is connected to the main drive shaft 21 via an eccentric link means 22 at an intermediate portion of the needle bar guide member 13. At the same time, the needle bar l can be moved up and down.

As shown in FIGS. 3 and 4, the looper moving mechanism B moves the cam groove surface (similar to the cam groove surface 25) 28 of the cam plate 27 by rotating the second rotation shaft 25. A second copying link 30 having a rolling contact roller 29 copied thereon is connected to the second rotation shaft 25, and the rotation amount and rotation direction obtained by the cam groove surface 28 are imparted to the second rotation shaft 25. As a result, the looper 8 is moved in accordance with the rotation of the needle bar 1, and the la between the sewing machine needle 3 and the looper 8 is adjusted.
The molding form can be formed along the lateral movement. In addition, a looper mechanism 68 that moves the looper 8 together with the looper
is a conventionally known one, and its explanation will be omitted.

Furthermore, the configuration in which the first cam plate 14 and the second cam plate 27 obtain rotation is as shown in FIGS. 4 and 5, in which a worm gear 31 is attached to the main drive shaft 21, and a A wheel gear 33 attached to the second cam shaft 32 is engaged to obtain rotation of the second cam plate 27, and pulleys 35 and 38 are connected to the first cam shaft 34 and the second cam sleeve 32. , both pulleys are connected by a belt 37 to obtain rotation of the first cam plate 14.

By the way, the feed fMj7 in this embodiment is a differential feed dog mechanism, and has a pair of feed dog bodies 7a shown in FIGS. 1 and 6.
, 7b is then moved to release the pair of feed dog bodies. a and 7b perform differential operation. This back and forth rocking of the holding stand 38 is achieved by rotatably connecting the lower end of the holding stand 38 to a shaft 39 which is supported by the casing, and around this shaft 39.

The feed control mechanism C is as shown in FIG.
A U-shaped shaft is attached to the shaft end of the swing force transmission shaft 41 that converts the rotation of the main drive shaft 210 into swing rotation at a predetermined angle through the eccentric link means 4° to the main drive shaft 21, and transmits this swing rotation. A straight piece 43 is fixed to one side 1 of the body 42 so as to be perpendicular to the axis of the rocking force transmission shaft 41, and a guide hole 45 is provided in the opposing piece 44 of the vertical piece 43, which is perpendicular to the axis of the rocking force transmission shaft 41. One end of the control shaft 47 is slidably engaged with the guide hole 45, and one end of the link 46 of the holding base 38 of the feed tk17 is rotatably connected to the intermediate portion of the control shaft 47. .

Also, a third cam plate 48 is attached to the other end of the control shaft 47 as shown in the figure.
A link mechanism 50 modeled after the cam groove 49 of the third
The rotation of the cam plate 4B causes the control shaft 47 to be connected to the rocking force transmission shaft 4.
1 and a non-neutral position separated from the axis of the swinging force transmission shaft,
The cloth feeder of the feeder 7 can be controlled.

In other words, when the control shaft 47 is located at the guide hole 45 position where the axis coincides with the swing force transmission shaft 41 as shown in the seventh factor, the swing of the buckling force transmission @4I is caused only by the swing force transmission shaft. By simply swinging and rotating the U-shaped body 42 fixed to the shaft 41 together with the swinging force transmission @41, the feed t! is connected to the control shaft 47! 14I! The holding table 38 of the structure does not operate and the feed t
M7 is also stopped +L, but if control #+47 is located at the guide hole 45 position that is above and away from the axis of the swinging force transmission shaft 41, the swinging force transmission shaft 41 is stopped at the U-shaped body 4.
2. The holding table 38 also swings back and forth through the control shaft 47 and the link 4B, and the feeder 7 is brought into the operating state 1. And control J1fAh4? Depending on the position of the guide hole 45, the back-and-forth oscillation of the holding table 38 can be varied, which means that the cloth feed amount of the feed tM17.

can be changed.

Here, the link mechanism 50 of the feed temperature control mechanism C has the base side of a fixed link 52 that is rotatable integrally with the shaft shaft 51 fixed to one end side of a shaft shaft 51 that is pivotally supported by the sewing machine casing. One end of the connecting link 53 is rotatably connected to the control shaft 47 and the other end of the connecting link 53 is rotatably connected to the distal end side of the fixed link 52.

The third rotatably mounted on the outer surface of the sewing machine casing.
On the cam groove surface 49 of the cam plate 48, as shown in FIG.

Third copying link 56 pivoted on the sewing machine casing 54
A rolling contact roller 55 is disposed, and the lower end of the third copying link 56 is connected to the other end side of the shaft shaft 51 via a connecting member 57 and a fixed link 67. Accordingly, the third copying link 56 is rotated by the cam groove surface 49 of the third cam plate 48; I) and the rotation direction.

11. The position of the control vehicle 47 in the guide hole 45 is converted.

The operation of the feed dog 7 is controlled.

Here, the third copying link 56 and the connecting member 57 are rotatably connected, and the connecting member 57 and the shaft axis 5I are connected in a fixed state. Further, the connecting member 57 has both ends 5
7a and 57b are connected via a threaded rod 58, and the length can be changed depending on the degree of screwing of the threaded rod 58.

As shown in FIG. 6, the configuration for rotating the third cam plate 48 includes a wheel gear 61 provided on an ohm gear 53 of the first cam shaft 34 and a rotation transmission shaft 60 that is pivotally supported on the sewing machine casing. The end of the ram 60 protrudes from the outer surface of the sewing machine casing, a gear 62 is attached to the end of the camshaft 60, and the gear 62 is meshed with an internal gear 63 fixed to the back surface of the third cam plate. .

Further, the feeding surface control mechanism C is provided with a second rotation transmission shaft 80° that rotates at a slower speed than the rotation transmission shaft 60. This rotation transmission shaft 60' is used when the third cam plate 48 and inner gear 141Z63 are removed and a new third cam plate 48 and internal gear are installed.

That is, a second tIiI wheel 64 is provided on the rotation transmission shaft 60, and this second gear 64 is provided at 60 degrees of the second rotation transmission shaft which is pivotally supported by the sewing machine casing! V65 is engaged, the shaft end of the third camshaft 60' is made to protrude to the outer surface of the sewing machine casing, and the gear 86 is attached to this protruding end.
This is to mesh with the internal gear of the 48° third cam plate provided.

Specifically, the sewing machine casing is equipped with two rotation transmission shafts so and so' that rotate at two different speeds: one for 80 stitches in one cycle of the feed dog 7, and one for 104 stitches with a larger number of cycles. When using the 80 needle type, the third cam plate 48 for 80 needles is attached to the rotation transmission shaft 60 for 80 needles, and when using the 104 needle type, the third cam plate 48 is attached to the rotation transmission shaft 60 for 104 needles. It is sufficient to attach the third cam plate 48' for 104 needles to '.

In this case, IMjU of the issued items is gear 66.
Another shaft support hole 54° for pivotally supporting the third copying link 56 is provided so that the third copying link 56 is pivotally supported, and the connecting member 57 connecting the third copying link 56 and the shaft shaft 51 is also connected to the rotational contact of the copying link 56. The length of the threaded rod 58 is adjusted so that the roller 55 is located below the support shaft 54 to correspond to the usage state of each cam plate.

With such a configuration, if the cloth 70, which is the object to be sewn, is set in the sewing section of the sewing machine and the sewing machine is driven, the first. Second.
The third cam plate 14, 27.48 (48') rotates, and the sewing machine needle 3 reciprocates left and right between the claws 6 of the throat plate 5 by the needle bar moving mechanism A, and the looper moves 0fiW.
By B, the looper 8 moves back and forth from side to side in correspondence with the sewing machine needle 3 to form a stitch, and by the feed control mechanism C,
There is a state in which the feeder 7 is stopped for each round trip of the stitch, that is, a state in which stitches are accumulated in each claw 6 without feeding, and a state in which the feed dog 7 is activated, that is, a state in which the fabric is fed and stitches are accumulated in each claw 6. i! the state of removing the eyes! ! Continuously, a stitch pattern can be formed along the edge of the fabric 70.

Furthermore, in ii) above, it will be disclosed what kind of stitching forms can be made when the second cam plate is replaced with the third cam plate 48 and another third cam plate 48'.

It should be noted that all the disclosures here indicate stitch sewing forms with a number of l cycles.

In FIGS. 10 to 13, the figure (A) is the third cam plate 48 for 80 stitches, and the figure (B) is the stitch pattern obtained by the third cam plate 48.

In Figures 14 to 16, Figure (A) is the third cam plate 48'' for lO4 forceps, and Figure (B) is the third cam plate 48'' for lO4 forceps.
This is the stitch pattern obtained by the cam plate 48'.

For each of the above 53 cam plates 48 and 48°, in the groove portion where the radius of the cam groove surface 49 is short, there is no cloth feed in 7, that is, the axis of the control shaft 47 is aligned with the swinging force transmission shaft 41. , in the groove portion of the cam groove 49 where the radius is long, there is cloth feeding. The guide hole 45 is located at a position above the line. Furthermore, each of the third cam plates 48, 48' has a different number of shoulders in which the seams are connected in a chain by changing the circumferential length of the cam groove surface 49.

Next, an example of a stitch configuration in which the position of the guide hole 45 of the control shaft 47 is changed to change the cloth feed 14 will be disclosed.

The stitching pattern shown in Fig. 17 is a case in which the cloth feed is eliminated for the door group consisting of 4 loops, and the cloth is fed by the amount of cloth so that the l shoulder body forms a triangular shape between the door groups. It is.

The stitch sewing pattern shown in FIG. 18 is a case where the cloth is slightly fed between the shoulder bodies of the door body group, and the sewing position to the cloth edge is shifted.

The stitch sewing form shown in FIG. 19 is a case where a slight 41 stitch feed is applied between the shoulder bodies of the door body groups, and a large 4 stitch feed is applied between the door body groups.

: The stitch sewing form shown in Fig. JS20 is made even larger by making the cloth feed stitch between each door body of the door body group larger than that in Fig. 19 and changing the radial position, that is, by changing the 41 feed jll of the feeder 7. Changes can be made to the stitch sewing pattern.

(Effects) As explained below, the stitch sewing machine of the present invention has the following effects:
Simply replace the third cam plate with a third cam plate with a different stitch sewing pattern to create a new stitch sewing pattern! In addition, the stitch sewing machine of the present invention can be replaced with a third cam plate that has a different number of cycles per stitch sewing form, that is, a different copying speed. It is possible to realize a stitch sewing pattern. Therefore, unlike the conventional one-stitch sewing machine, it is a special machine and its stay.

This solves the problem that there were only a few stitch patterns, and it is possible to provide the market with a variety of stitch patterns.

Moreover, by preparing various types of third cam plates, it is possible to achieve a wide variety of stitch sewing patterns with one stitch sewing machine, making it suitable for low-volume, high-mix production. In this case, it is sufficient to attach the third cam plate of the stitch sewing form required by the market, which makes it possible to provide products that meet market demands and improve productivity. good.

[Brief explanation of drawings]

1 to 9 show one embodiment of the present invention, FIG. 1 is a simplified perspective view showing the sewing part, FIG. 2 is an explanatory view of the movement of the hands, and FIG. 3 is a perspective view showing the main parts. Fig. 4 is a principle diagram, Fig. 5 is a perspective view showing the main parts, Fig. 6 is an explanatory diagram of the operation of the feed control mechanism, Fig. 7 is a longitudinal sectional view, Fig. 8 is a simplified side view, and Fig. 9 10 (A), (B) to 16 (A), (B) show the front view of the third cam plate in (A), and the stitching according to (A) is shown in FIG. A simplified diagram of the sewing form is shown in Figure (B). 17 to 20 are simplified diagrams of stitch sewing patterns, respectively. A... Needle bar moving mechanism B... Looper moving mechanism C... Both feed temperature control mechanism l... Needle bar 8... Looper 13... Needle bar guide member 14... First cam Plate 15...Cam groove top 27...Second cam plate 28...Cam groove a 41...Rocking force transmission shaft 42...U-shaped body 43...Vertical piece 44...Opposing piece 47...-Control shaft 48.48'...Third cam plate 49...Cam h curve 60.60'...Rotation transmission shaft Patent applicant Moriki Seisakusho Co., Ltd. Agent
Patent Attorney Takashi Suzue - Figure 1 Figure 2 Figure 6J (Figure 4 Figure 5 Figure 10 Figure 11 (A) (A)

Claims (1)

[Scope of Claims] A needle bar moving mechanism that enables horizontal movement of a needle bar guide member that holds a needle bar so that the needle bar can move; and a looper movement mechanism that enables horizontal movement of a looper in response to the horizontal movement of the needle bar. A vertical piece, which is one side of a U-shape, is fixed perpendicular to the axis of the swinging force transmission shaft to the shaft end of the swinging force transmission shaft that forms the operation source of the mechanism and the feed dog. A guide hole is provided perpendicular to the axis of the swing transmission shaft, and a control shaft is slidably engaged with the guide hole, and the control shaft is fitted into the swing force transmission shaft by following the cam groove of the third cam plate. a feed dog control mechanism that stops or activates the feed dog by sliding it in the guide hole between a neutral position corresponding to the axis of the swinging force transmission shaft and a non-neutral position separated from the axis of the swinging force transmission shaft; A stitch sewing machine characterized in that the tooth control mechanism is provided with a plurality of rotation transmission shafts having different rotational speeds, and a predetermined third cam plate is replaceably attached to each of the rotation transmission shafts.