JPS5930115B2 - automatic pattern sewing machine - Google Patents

Description

[Detailed Description of the Invention] As a conventional automatic pattern sewing machine, there is a machine developed by the present inventor and already published as Japanese Patent Publication No. 47-9396. The sewing machine was equipped with a sewing machine head attached to a fixed sewing machine frame and a frame for supporting the work to be sewn, and a carriage was moved by the operation of a tracing drive wheel and a sewing machine head attached to a fixed sewing machine frame to sew according to the pattern on a tracing pattern board.

However, this sewing machine can sew small patterns such as wave stitches, zigzag stitches, corner stitches, and scara stitches, i.e., sew small patterns that are formed while swinging slightly to the left or right with respect to the sewing direction of large patterns (hereinafter referred to as fantasy stitches). ) was not possible.

The reason for this is that even if these fantastic sewing patterns are formed as tracing patterns, the patterns change drastically, so it is technically difficult to move the cart along the tracing pattern board.

The present inventor has conducted further research and development in an attempt to eliminate these drawbacks and provide an automatic pattern sewing machine that makes fantasy stitching practically possible.

This invention is equipped with a dolly that is movable back and forth, left and right, a pattern plate and a support frame for the workpiece, and the dolly is not moved by the operation of a sewing machine head and a profiling drive wheel that are attached to a fixed sewing machine frame. In an automatic pattern sewing machine that sews a pattern according to the pattern on a board, a pair of rotating shafts are installed vertically at the upper diagonal corner of the cart, and the rotating shafts are driven by a motor added to the cart, A ball caster receiving plate is attached to the diagonal corner, a cam plate of a predetermined shape is attached to the head of the rotating shaft, a sliding plate is placed on the cam plate so as to be slidable in one horizontal direction, and the back side of the sliding plate is A pair of rollers are installed vertically in contact with the side surfaces of the cam plate, and the sliding plate is attached to the back of the corner of the support frame so as to be rotatable within a predetermined angle range. This invention relates to an automatic pattern sewing machine having a configuration in which casters are vertically installed, and a support frame is supported on a cart by a pair of vertical rotating shafts at diagonal corners and a ball caster receiving plate. .

The ball caster may be attached to the upper part of the support frame instead of the back side of the support frame, and the corresponding pole caster receiving frame may be attached to the lower surface of the support frame instead of the upper side of the support frame.

Also, replacing the ball caster with a similar caster is also included in the technical idea of the present invention.

An embodiment for sewing a futon will be described below with reference to the drawings.

Fig. 1 is a front view showing the entire embodiment of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is an explanatory view showing the rotating shaft and cam plate portion, Fig. 4 is Fig. 3 I-I Figure 5 is a cross-sectional view taken from the line ■-■ in Figure 3, Figure 6 is a cross-sectional view taken from the line ■-■ in Figure 3, and Figure 7 shows the shape and shape for the leash stitching. Figure 8 is an explanatory diagram showing the fantastic pattern when the cam plate shown in Figure 7 is used, Figure 9 is an explanatory diagram showing the ball caster part, and Figure 10 is an explanatory diagram showing the vertical cam plate. Explanatory diagram showing the mechanism of 1 driving force transmission of the rotating shaft, Part 11.1
FIG. 2 is a plan view showing an example of a contoured pattern board and a fantasy pattern thereof, and FIG. 13 is an exploded perspective view showing the main parts of the present invention.

In the figure, 1 is the portal machine frame, 2 is the -F section horizontal frame, 3 is the middle horizontal frame, and 4
is the upper shaft of the sewing machine, 5 is its coupling, 6 is the lower shaft of the sewing machine, 7 is the missing number, 8 is the sewing machine head, 9 is the sewing machine drive device, 1
0 is a control button wall, 11 is a cart, 12 is a lower cart forming the cart, which moves in the left and right direction, 13 is an upper cart forming the cart, which moves back and forth on the lower cart 12, and 14 15 is a pattern board, 15 is a pattern drive wheel driven by a motor, 16 is a pattern protrusion, 17 is a support frame for stretching the futon, 18 is a pair of rotating shafts vertically disposed at the upper diagonal corner of the cart. , 19 is a cam plate having a predetermined shape, 20 is a protruding shaft at the rotation axis of the cam plate, 21 is a sliding plate, 22 is a pair of rollers vertically installed on the back surface of the sliding plate, and 23 is an elongated roller bored in the center of the sliding plate. This is an opening into which the protruding shaft 20 is inserted, and 24 is a rotation angle limiting plate fixed to the upper surface of the sliding plate, and 25 is a groove cut out approximately 90° from the outer circumference of the rotation angle limiting plate. 26 is rotatably mounted on the rotation angle limiting plate,
The upper part is a support plate fixed to the support frame 17, 2
Reference numeral 7 indicates a locking piece installed vertically on the lower surface of the support plate and inserted into the groove 25, and reference numeral 28 indicates the rotation angle limiting plate 24 and the support plate 2.
Thrust bearing between 6 and 29.29' is groove 25
30 is a ball caster receiving plate attached to a diagonal corner of the truck, 31 is a ball caster, 32 is a drive motor for the rotating shaft 18, and 33 is the same. The driving force of the drive motor is transferred to the rotating shaft 18.
Transmission mechanism for transmitting data to the drive belt 34, 35, 35', 35'' ridge 1 of the ridge drive wheel 15;
This is a contact provided on the inverted portion of No. 6.

A rotary solenoid may be used to reverse the sliding plate 21 by 90 degrees.

In this embodiment, if the tracing drive wheel 15 fixed to the horizontal frame 3 in the middle of the sewing machine frame is rotated by an electric motor (not shown), the tracing pattern protrusion 16 pressed against the tracing 1 driving wheel 15 can be rotated. The profiled pattern plate 14 receives a reaction force due to the massatuka, and the trolley 11 to which it is attached is affected by the profiled pattern protrusion 16.
Move forward, backward, left and right.

Also, if the drive motor 32 is operated, the transmission mechanism 33 will be used to
The rotating shaft 18 rotates, and the cam plate 19 at the head of the rotating shaft also rotates.

The cam plate 19 has a desired shape as shown in FIGS. 4 and 9, and when it rotates, a pair of rollers 2 are in contact with it.
1 is moved by the side surface of the cam plate 19, and the cam plate 1
The protruding shaft 20 of No. 9 is inserted into the elongated opening 23, and the sliding plate 21
Since the sliding plate 21 has a degree of freedom only in one direction in the elongated direction, the sliding plate 21 slides on the cam plate 19 in such a manner that it swings horizontally from side to side and from side to side.

The sliding plate 21 and the support plate 26 of the support frame 17 are only rotatably fitted through the rotation angle limiting plate 24, so when the sliding plate 21 moves, the support plate 26 moves horizontally to the left and right with the sliding plate 21. The support frame 17 is periodically moved horizontally so as to swing from side to side.

Therefore, the support frame 17 can move in a large tracing pattern according to the tracing pattern board 14 from the entire truck 11, and in a small pattern (fantasy sewing pattern) that swings from side to side in the direction of movement caused by the rotation of the cam plate 19. This is a synthetic movement that enables fantastic stitching.

Note that when the rotating shaft 18 and the cam plate 19 rotate initially, the sliding plate 21 is rotated by the flat surface between the cam plate 19 and the sliding plate 21.
rotates, but the locking piece 27 of the support plate 26 is locked to the end face stopper 29 of the groove 25 of the rotation angle limiting plate 24, and the sliding plate 21 does not rotate thereafter but only swings left and right with respect to the direction of movement.

Next, at a part of the corner where the direction of the tracing pattern changes by 90 degrees, when the tracing drive wheel 15 comes to the contact point 35, the contact point is activated and the tracing drive wheel 15 and the drive motor 28 stop immediately.
After the sewing machine head 8 has sewn several times to complete the securing stitches, all of the sewing machines stop, and then a timer (not shown) operates and after a short period of time, only the tracing drive wheel 15 operates, and the trolley 1
1 moves and reaches the contact point 35', which acts for a short time so that the drive motor 32, which rotates the rotary shaft 18, rotates in the opposite direction to the previous rotation direction.

When the drive motor 32 operates, the rotating shaft 18 rotates, but in the opposite direction, so the sliding plate 21 and the rotation angle limiting plate 24 are used as stoppers on the ends of the grooves 25 of the rotation angle limiting plate, which have been locked until now. The locking piece 27 rotates about 90' in a direction away from the groove 29, and the fixed locking piece 27 hits and locks against the stopper 29' on the other end surface of the groove 25.

After that, only the driving wheels 15 are rotated and the trolley 11 is rotated.
When it comes to contact 35", the other drive motor 3
2 and the sewing machine head 8 are also operated, and the fantasy stitching is resumed according to the pattern pattern.

(Even when restarting, the first thing to do is to secure the stitches.

) At this time, since the locking piece 27 and the stopper 29' are locked, the sliding plate 21 is swung left and right with respect to the direction of the tracing pattern, so that fantasy stitching is still possible even if the tracing pattern changes. It has become.

Similarly, the stops and starts of the drive are controlled by contacts at other corners of the pattern protrusions.

The selection of fantasy stitching patterns (wave stitching, corner stitching, etc.) is made possible by changing the shape of the cam plate 19.

As described above, according to the present invention, it is possible to combine fantasy stitches while sewing a large tracing pattern according to the tracing pattern board, increase the variety of sewing patterns, and realize automatic pattern sewing that is highly practical. It has the effect of making it possible.

[Brief explanation of the drawing]

FIG. 1 is a front view showing the entire embodiment of the automatic pattern stitch sewing machine of the present invention, FIG. 2 is a plan view of the same, FIG. 3 is a front view showing the rotating shaft and cam plate, and FIG. Figure 5 is a cross-sectional view taken from the line ■-■ in Figure 3, Figure 6 is a cross-sectional view taken from the line ■-■ in Figure 3, Figure 7 is a cross-sectional view taken from the line ■-■ in Figure 3, and Figure 7 is a cross-sectional view taken from the line ■-■ in Figure 3. FIG. 8 is an explanatory diagram showing a fantastic sewing pattern when the cam plate of FIG. 7 is used; FIG. 9 is an explanatory diagram showing the ball caster part;
Fig. 10 is an explanatory diagram showing a mechanism for transmitting driving force of a vertical rotation axis, Fig. 11 is a plan view showing an example of a pattern board, and Fig. 1
FIG. 2 is a fantasy pattern diagram, and FIG. 13 is an exploded perspective view showing the main parts of the present invention. 1: Portal machine frame, 2: Upper horizontal frame, 3: Middle horizontal frame, 4: Sewing machine upper shaft, 5: Bearing, 6: Sewing machine lower shaft, 7: Bearing, 8: Sewing machine head, 9: Sewing machine drive Device, 10: control button board,
11: Truck, 12: Lower truck, 13: Upper truck, 14:
Tracing pattern plate, 15: Tracing drive wheel, 16: Tracing pattern projecting piece, 17: Support frame, 18: Rotating shaft, 19: Cam plate,
20: Protruding shaft, 21: Sliding plate, 22: Roller, 23: Opening, 24: Rotation angle limiting plate, 25: Groove, 26: Support plate, 27: Locking piece, 28: Bearing, 29°29':
Stopper, 30: Hall caster receiving plate, 31: Ball caster, 32: 1 drive motor, 33: Transmission mechanism,
34: Drive belt, 35.35'. 35″: Contact.

Claims (1)

[Claims] 1. The machine is equipped with a dolly that can be moved back and forth and left and right, and is equipped with a pattern board and a support frame for the workpiece to be sewn. In an automatic pattern sewing machine that sews a pattern according to the pattern, a pair of rotating shafts are installed vertically at the upper diagonal corner of the trolley, and the rotating shafts are driven by a motor attached to the trolley, and the other upper diagonal corner of the trolley is A ball caster receiving plate is attached to the rotary shaft, a cam plate of a predetermined shape is attached to the head of the rotating shaft, a sliding plate is placed on the cam plate so as to be slidable in one horizontal direction, and a cam plate is placed on the back of the sliding plate. A pair of rollers are installed vertically in contact with the side surfaces, and the same sliding plate is attached to the back of the corner of the support frame so as to be rotatable within a predetermined angle range, and a ball caster is suspended from the back of the support frame corresponding to the ball caster receiving plate. 1. An automatic pattern sewing machine characterized in that the support frame is supported by a pair of vertical rotating shafts at diagonal corners and a ball caster receiving plate in a mounted state on a trolley.