JPS6118472B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a special industrial sewing machine mainly used for binding futons.

Conventionally, as a sewing machine for binding futons, a support base for the futon is installed in a machine frame equipped with a sewing machine body so as to be movable back and forth, left and right, and the support base is moved relative to this while the sewing machine body is operating. A type of sewing machine with a structure that binds a supported futon is known, but since the futon is moved relative to the sewing machine itself, it requires a very large installation area, twice the size of the futon both vertically and horizontally, that is, more than four times the size of the futon. There is a drawback that.

The present invention eliminates the above-mentioned drawbacks of the conventional sewing machine by separating the arm part and base part of the sewing machine body from each other and providing them as completely separate bodies, and by moving the sewing machine body relative to the futon. It is possible to obtain a wide variety of binding patterns combining circles, etc., and the details will be explained below with reference to the drawings.

The attached drawings show one embodiment of the present invention, and 1
is the foundation. This base 1 is provided in left and right parts, and two guide rails 2 are laid parallel to each other on the upper surface thereof. A gate-shaped machine frame 4 having a plurality of drive wheels 3 is provided on the base 1 so that the drive wheels 3 are movable in the front and rear directions in relation to the guide rail 2. Drive wheel 3 is machine frame 4
The machine is mounted on the machine frame 4 via the rotating shaft 5, a sprocket wheel 6, a chain 7, and a sprocket wheel 8, which are mounted on the rotating shaft 5. It is connected to a front and rear drive device 9 such as a motor, and is rotated by the operation of the drive device 9 to move the machine frame 4 in the front and rear direction along the guide rail 2.

The machine frame 4 has two upper and lower guide members 10,
11 are provided horizontally and in parallel at a required interval, and these guide members 10 and 11 are provided with an arm portion 13 having a needle 12 and a hook (not shown) and are separate from the arm portion 13. A base portion 14 provided at the base portion 14 is supported by guide members 10 and 11, respectively, and is configured to be movable in the left-right direction along these guide members. The arm portion 13 and the base portion 14 constitute a conventional sewing machine main body 15. The arm portion 13 and the base portion 14 are connected to a sewing drive device 16 such as a motor mounted on the machine frame 4 via transmission mechanisms 17 and 18, an intermediate shaft 19, a brake 20, a pulley 21, a belt 22, and a pulley 23. has been done. The transmission mechanisms 17 and 18 shown in the figure include an intermediate shaft 1
9 and the timing pulley 2 which is attached to the other shaft 24.
An annular timing belt 27 is used, which is wrapped around timing pulleys 28 and 29.
The arm portion 13 and the base portion 14 are configured to rotate in synchronization with each other via.

Furthermore, the arm portion 13 and the base portion 14 are connected to the machine frame 4.
Left and right drive device (movement drive device) installed in
30 via feed mechanisms 31, 32, etc. The feed mechanisms 31 and 32 in FIG.
An annular timing belt 35 is used, which is wound around timing pulleys 33 and 34 attached to the arm part 13 and the base part 14, and is tied to the arm part 13 and the base part 14. It is configured to move. The left and right drive device 30 is connected to a feed mechanism 32 via a pulley 36, a belt 37, and a pulley 38, and this feed mechanism 32 is connected to a pulley 39 (overlapping the pulley 38), a belt 40, a pulley 41, A gear 42 formed integrally with this pulley 41 and a gear 43 that meshes with this gear
1 has been contacted.

Another example of the feeding mechanisms 31, 32 is shown in FIG. In this case, a screw shaft 44 is used, and the rotation of the screw shaft 44 moves the arm portion 13 and the base portion 14 left and right through a nut body 45 screwed thereon.

Reference numeral 46 denotes a support stand disposed in the center of the machine frame 4, which clips the surrounding area of the futon, etc. (not shown).
It is held between the arm portion 13 and the base portion 14 of the sewing machine main body 15. This support stand 46 is constructed so that it can be freely moved on the floor by casters 47, and its movement is controlled by a control system (not shown).

Note that a cable such as a chain may be used in place of the timing belts 27 and 35. In this case, it goes without saying that the timing pulley can be replaced with a sprocket wheel or the like. Further, the belts 22, 37, 40, gears 42, 43, etc. can be replaced with other transmission means.

Next, the operation of the sewing machine device for sewing futons and the like having the above-mentioned structure will be explained.

When the futon is prepared by being supported on the support stand 46 and the sewing drive device 16 is operated, the belt 22 and the intermediate shaft 1
The timing belt 27 rotates via the timing pulley 25, timing pulley 28, etc.
29 to operate the arm portion 13 and base portion 14 in synchronization. When the front and rear drive device 9 is moved in this state, the drive wheel 3 rotates and the machine frame 4 moves in the front and back direction along the guide rail 2, moving the sewing machine body 15 relative to the futon, so that the futon is It is sewn in a straight line in the front-to-back direction.
Further, when the front and rear drive device 9 is stopped and the left and right drive device 30 is moved, the timing belt 35 circulates and moves the arm portion 13 and the base portion 14 in the left and right direction along the guide members 10 and 11 in synchronization. To achieve this, the futon is sewn from left to right. When the front and rear drive device 9 and the left and right drive device 30 are operated at the same time, the futon is sewn diagonally. Since the support base 46 has a movable structure, the front and rear drive device 9 or the left and right drive device 30 or these devices 9, 30
The support stand 46 can be used as necessary when operating or stopping the
move. By moving the support stand 46, a seam (stitch) such as an arc can be obtained, but if the support stand 46 is moved at the same time as the sewing machine main body 15, a more complicated stitch pattern can be obtained. Note that the brake 20 prevents inertial movement of the sewing machine body 15. For the same purpose, the drive wheels 3 or the front and rear drive devices 9 are also usually equipped with brakes.

As explained above, in the present invention, the arm portion 13 and the base portion 14 that constitute the sewing machine main body 15 are
The arm portion 13 and the base portion 14 are individually supported and guided by a pair of mutually parallel guide members 10 and 11, and are separated from each other and are completely separate from each other. Sewing machine body 1
For example, as in the embodiment shown in the figure, the machine frame 4 can be configured to move back and forth along the guide rail 2, and its installation area is smaller than that of the futon (approximately the size of the base 1). The size of the sewing machine can be made larger (approximately 1/4 of that of the conventional sewing machine explained at the beginning), and the machine frame 4 can be fixed to the floor while the futon support stand 46 can be moved in the front and rear directions. configuration, the installation area is approximately twice that of a futon (approximately 1/1 of that of conventional equipment).
2).

Moreover, as described above, the arm part 13 and the base part 14 are completely separate bodies, and are individually supported and guided by a pair of parallel guide members 10 and 11, so that, for example, one guide member 11
By arranging a plurality of base parts 14 in parallel and changing the combination of the arm part 13 and base part 14 during the futon binding process, the color and type of the binding thread can be changed, resulting in a more beautiful and varied binding pattern. can be obtained easily.

[Brief explanation of the drawing]

FIG. 1 is a front view of a sewing machine device according to the present invention, and FIG. 2 is a sectional view showing another embodiment of the feed mechanism. DESCRIPTION OF SYMBOLS 1... Base, 2... Guide rail, 3... Drive wheel, 4... Machine frame, 9... Front and rear drive device, 10...
...Guide member, 11...Guide member, 12...
Needle, 13...Arm part, 14...Base part, 15
... Sewing machine body, 16 ... Sewing drive device, 17,
18...Transmission mechanism, 27...Timing belt,
30... Left and right drive device (movement drive device), 3
1, 32... Feeding mechanism, 35... Timing belt, 44... Screw shaft, 46... Support stand, 47...
Caster.

Claims (1)

[Claims] 1. An arm portion of the sewing machine body equipped with a needle and a base portion equipped with a rotary hook and provided separately from the arm portion are each individually supported by a pair of mutually parallel guide members provided on the machine frame. and is movably installed in a guided manner, and is actuated by a moving drive device on the arm portion and the base portion to move the arm portion and the base portion in synchronization with each other along the guide member. 1. A sewing machine for sewing futons, etc., comprising a feed mechanism and a transmission mechanism that is moved by a sewing drive device and operates an arm portion and a base portion in synchronization with each other.