JPS60220092A - Automatic pattern stitch sewing machine of futon - 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 The present invention relates to an automatic pattern stitch sewing machine in which a futon or side fabric of a futon is placed on a movable table and moved relative to the sewing machine body by a drive device for binding.

In recent years, futons have become more diverse, and their stitching patterns have also become more diverse. This suturing means can be roughly divided into single-needle stitching on a single-head sewing machine and multi-needle stitching on a multi-head sewing machine. However, although the former has the advantage of being able to sew any pattern because it is a wooden nail, it has problems in terms of workability. The latter method has excellent workability because it uses a plurality of needles, but it has the problem that the stitching patterns are limited because the five needles stitch at the same time, that is, they cannot be stitched separately.

SUMMARY OF THE INVENTION An object of the present invention is to provide an automatic pattern sewing machine that has good workability and is not limited in sewing patterns.

In order to achieve this object, the automatic pattern stitch sewing machine of the present invention has an automatic pattern sewing machine in which a futon or side fabric of a futon is placed on a movable table and moved relative to the main body of the sewing machine by a drive device for binding. In the sewing machine, an upper frame is provided with a plurality of sewing machine heads, and a lower frame is provided with a lid part corresponding to each of the sewing machine heads, thereby configuring a plurality of sewing machine suture parts each consisting of the sewing machine head and the lid part. ,
Each of the sewing machine sewing parts can be driven individually.

With this structure, the movable base is moved along the stitching pattern, and the sewing machine stitching section is selectively driven based on the stitching pattern, thereby stitching a plurality of various types of the same pattern and a single pattern.

Therefore, according to the present invention, each sewing machine can be driven individually, so that it can be used as a one or more needle sewing machine such as a wooden nail sewing machine, a two-needle sewing machine, a three-needle sewing machine, etc. Depending on the selection, various patterns can be sewn efficiently.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, the sewing machine main body 1 consists of a leg frame 2, 2' and upper and lower frames 3, 3' installed between the legs 2, 2'. A plurality of sewing machine heads 4 are provided on the lower surface of the upper frame 3, and a sewing machine lid part 5 corresponding to each sewing machine head 4 is provided on the lower frame 3'. A plurality of sewing machine stitch parts p are configured. The number of stitched portions p may be selected as appropriate.

As shown in FIG. 3, each sewing machine head 4 is vertically rotatable by a cylinder 6, and as the cylinder 6 expands, the head 4 retreats from the lid 5.

This withdrawal distance j is set so that the movable table 7 on which the object A to be sewn, such as cloth, is stretched can sufficiently pass through the distance.

Drive shafts 8 and 8' are provided across all the sewing machine heads 4 and all the sewing machine heads 5, and these drive shafts 8 and 8' are connected to the head 4 and the lid part 5 via a clutch mechanism 9, The drive of the motor 10 is transmitted to the head 4 and the lid 5 via the shafts 8, 8', etc., and the object to be sewn A is sutured. The shaft 81ζ is provided with a rotation angle detector 20, and this detector 20 allows the shafts 8, 8 to be
' is always stopped at a predetermined rotation angle.

As shown in FIGS. 4 and 5, the clutch mechanism 9 supports a box 11 on a drive shaft 8 via a collar 12' and a bearing 12, and a timing pulley section 13 is attached to the drive shaft 8 so as to be movable in the axial direction. Attachment, the pulley portion 13 and the sewing machine head 4 are connected by a belt 14. A driving clutch plate 15a is provided on one side of the pulley portion 13, and a fixing clutch plate 15b is provided on the other side via a transmission plate 16 with a bearing. A clutch plate 17 whose drive clutch plate 15a is fixed to the drive shaft 8
By being engaged with H, the drive shaft 8 and the pulley part 13 are integrated, the rotation of the drive shaft 8 is transmitted to the head 4, and the fixed clutch plate 15b is fixed to the box 11.
The pulley portion 13 is fixed by being engaged with the pulley portion 7b, and the pulley portion 13 becomes free with respect to the drive shaft 8. Transmission plate 16
A lever 1B with a forked tip faces the lever 1B, and a projection 18' of the forked tip fits into the transmission plate 16. The lever 18 is swung by the rotary actuator 19 as shown by the arrow in FIG.
71.17b, the clutch 9 is turned on and off, and the sewing machine head 4 is driven or not driven.

Clutch plates 15a and 17a, and 15b and 17b are configured to engage only at the same rotation angle position. Therefore, the locking position and the predetermined position detected by the co-rotation angle detector 20 are made to correspond, and the on/off signal of the clutch mechanism 9 is output from the fixed position signal by the angle detector 20 when the motor 10 is stopped. Make sure to emit it only when The clutch mechanism 9 of the sewing machine lid 5 also has the same structure as the above mechanism.

Parallel rails 21 and 21' are provided inside the leg frame 2.2' of the sewing machine body 1 and run parallel to this frame.
A cart 22 that moves in the axial direction (I21. lower, referred to as the Y-axis direction) is installed at 1.21'. The truck 22 is threadedly engaged with a screw shaft 23.23' extending in the Y-axis direction, and when the screw shaft 23.23' is rotated by the motor 24, the truck 22 is rotated in the Y-axis direction.
Move in the axial direction.

In addition, rails 25 are provided on the front and rear frame sides (X-axis direction) of the trolley 22.
, 25' are provided, and a movable platform 7 is installed on this rail 25.25'.
is placed thereon so that it can be moved in the X-axis direction.

The movable base 7 is supported by a truck 22 and is screwed into a screw shaft 26 extending in the X-axis direction. When the screw shaft 26 is rotated by a motor 27 on the truck 22, the movable base 7 moves in the X-axis direction. .

Therefore, by driving the motors 24 and 27, the movable table 7 or the cart 22 is moved to any position in the X-axis and Y-axis directions (on the horizontal plane), and by setting this movement locus appropriately, various stitching patterns can be created. Obtainable. This motor 24.
The motor 27 is operated and automated based on numerical control with the moving plane of the movable base 7 in xy coordinates, and the motor 10
The driving and stopping of the sewing machine and the turning on and off of the clutch mechanism 9 are also automated, and these controls are programmed in advance with five stitching patterns and controlled by a computer based on this program.

In addition, in the figure, 28 is a thread winding bobbin, and 29 is a tension frame for the article A to be sutured.

The embodiment is constructed as described above, and when sewing a futon or the like, the object to be sewn A is placed on the movable table 7, and the motors 24 and 27 are controlled to set the object on the movable table 7. and move the object to be sewn A along the stitching pattern.
The desired stitching pattern is obtained by driving the motor 10 and turning on and off each clutch mechanism 9 as appropriate. That is, in the case of pattern B shown in FIG. 6(a), suturing is performed using one sewing machine sewing part p, similar to a single-head sewing machine,
In the case of (b), the suture line 3 is stitched with four machine stitches p, and then the stitch line b is stitched with one machine stitch p. In this case, if the sewing machine has five sewing parts p, this can be done without switching the clutch mechanism 9. In a conventional sewing machine (hereinafter simply referred to as a fixed rear needle sewing machine) in which the stitching portions p cannot be driven separately, the pattern bl can only be created with five stitching portions p.

In the case of (C), the suture line 3 is stitched using the three sewing machine stitching parts p, and then the lines are stitched.

In the case of dl, after stitching one row of circular suture lines with four sewing machine suture parts p, move the movable table 7 to the left, stitch 3' row of circular suture lines in the same way, and then Stitch the frame-shaped suture line with one sewing machine stitch p.This pattern is
In a fixed rear needle sewing machine, if the number of rows of circular suture lines is a multiple of the number of stitches p, the pattern can be sewn, but if not, it cannot be sewn, and the frame suture line is a different number in any case. It must be done using a one-piece nail sewing machine.

FIG. 7(a) shows a pattern in which the features of the sewing machine of the present invention are most prominent.As shown in FIG. 7(b), the four sewing machine stitches pi + p2+ p3+ p4 form a heart-shaped C and a clover-shaped d5. After stitching the spade shape e and the inverted heart shape C', as shown in (c), the - side stitching section p+ is turned off and the movable base 7 is moved laterally, and the three sewing machine stitching sections p2 r I) Stitch the rhombus f from a + p4 + c, and finally frame b using one stitched part p. This pattern B can be sewn with a single-head type single-head needle sewing machine, but the work time is extremely long, and it is not possible with a fixed-head type rear-needle sewing machine.

In addition, it is preferable that the head 4 of the non-driven sewing machine suturing section p be retracted by contracting the cylinder 6 as shown by the chain line in FIG. 3.

In the above embodiment, the movable base 7 is moved horizontally by a combined movement in the X-axis and Y-axis directions, but the present invention can also be adopted in the case of a rail pattern following method.

Further, the sewing machine head 4 and the lid part 5 of each sewing machine sewing part p may be driven by separate motors at different timings. In this case, the clutch mechanism is no longer necessary, and the head 4 and the lid part 5 can be controlled to rotate around its needle direction (vertical direction), the moving direction of the movable base 7 and the direction of hand movement can be made to coincide.

[Brief explanation of the drawing]

FIG. 1 is a front view of an embodiment of the automatic pattern stitch sewing machine of the present invention, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a cutaway side view of the main part of FIG. 5 is a cutaway plan view of FIG. 4, FIGS. 6(a) to fd) are plan views showing each side of the stitching pattern, and FIG.
7(c) are explanatory diagrams of pattern stitching. 1... Sewing machine body, 3.3'... Frame, 4...
・Sewing machine head, 5... Sewing machine lid, 7... Movable base,
8, 8'... Drive shaft, 9... Clutch mechanism, 10
, 24, 27... motor, 23.23', 26...
・Screw shaft. Patent applicant Yama-Sewing Machine Industry Co., Ltd. Agent Kama 1) Bun 2

Claims (3)

[Claims] (1) In an automatic pattern stitch sewing machine in which a futon or side fabric of a futon is placed on a movable table and moved relative to the sewing machine body using a drive device for binding, the upper frame is provided with multiple sewing machine heads, and the lower The frame is provided with distorted parts corresponding to each of the sewing machine heads, a plurality of sewing machine suturing parts are constituted by the sewing machine heads and the distortion parts, and each of the sewing machine suturing parts can be driven individually. Features: Automatic pattern sewing machine for sewing futons, etc. (2) The drive mechanism for the sewing machine suture section is provided with a drive shaft extending over all the sewing machine suture sections, and this drive shaft and each sewing machine suture section are connected via a clutch mechanism, and the clutch mechanism is selectively turned on. - An automatic pattern sewing machine for sewing futons and the like as set forth in claim (1), characterized in that it is configured to be able to be turned off. (3) Automatic patterning of futons, etc. according to claim (1), characterized in that each of the sewing machine sewing parts is driven by a separate motor, and each motor can be selectively driven. Sewing machine.