JP2000245988A - Sewing machine frame of multi-head sewing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress vibration by simple constitution. SOLUTION: This sewing machine frame 1 of a multi-head sewing machine mounting plural sewing machine units 6 obtained by integrally forming a sewing machine head 8 for driving needles 7 and beds 9 incorporating shuttles is provided with bases 2 which are arranged on a floor surface with a right-left interval between them and extend back and forth, a pair of struts 3 standing on each of the substrates 2 and a horizontal frame 4 fixed in a state of being bridged between both of the struts 3 to fix the units 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewing machine frame suitable for a multi-head sewing machine.

[0002]

2. Description of the Related Art A sewing machine frame of a multi-head sewing machine to which a sewing machine unit integrally formed with a sewing machine head for driving a needle and a bed containing a shuttle is mounted, for example, having a structure framed by a plurality of steel materials. It has been known.

[0003] In recent years, as sewing speeds of sewing machines have been improved,
Vibration generated by the drive of the needle and the shuttle during sewing is increasing.Conventionally, the strength of the sewing machine frame is increased by adding steel for reinforcement to each part of the sewing machine frame and increasing the number of steel materials used. Thus, the vibration of the sewing machine frame has been suppressed.

[0004]

However, since a reinforcing steel material is added to each part of the sewing machine frame to increase the number of steel materials used, the structure of the sewing machine frame becomes complicated and the weight increases. The problem has arisen.

An object of the present invention is to provide a sewing machine frame of a multi-head sewing machine which can solve the above-mentioned problems and can suppress vibration with a simple structure.

[0006]

To achieve the above object, a sewing machine frame of a multi-head sewing machine according to the present invention comprises a plurality of sewing machines in which a sewing machine head for driving a needle and a bed containing a shuttle are integrally formed. In a sewing machine frame of a multi-head sewing machine to which a unit is attached, a base extending in the front-rear direction and arranged on the floor with a space between the left and right, a pair of columns standing on each of the bases, and bridged over both columns. And a horizontal frame for mounting the sewing machine unit fixed in a state.

[0007] An embodiment can be exemplified in which an intermediate support is provided for supporting a middle part in the length direction of the horizontal frame to the floor surface.

[0008] Further, a mode in which the intermediate support is detachably attached to the horizontal frame can be exemplified.

[0009] Further, a mode in which a reinforcing member for connecting the support portion to the middle portion in the length direction of the horizontal frame is provided can be exemplified.

Further, an embodiment may be provided in which a reinforcing member for connecting the middle part in the length direction of the horizontal frame and the middle support is provided.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, FIG. 1 and FIG. 2 show a sewing machine frame 1 of a multi-head sewing machine according to a first embodiment. The vehicle includes a standing column 3 and a horizontal frame 4 fixed in a state of being bridged between the columns 3. A steel pipe having a rectangular cross section is used for the base 2, the support 3, and the horizontal frame 4.

The base 2 is provided with floor contact portions 12 at the front and rear end sides of the bottom surface thereof, the floor contact portions 12 being in contact with a floor surface 13, respectively.
Is provided with a height adjustment unit (not shown) for adjusting the height of the upper surface of the base 2. With this height adjuster, the upper surface of the base 2 can be made horizontal and the height of the other base 2 can be adjusted so that the upper surface of the horizontal frame 4 can be adjusted to be horizontal. ing. The base 2 is formed long in the front and back, and the front and rear floor contact portions 12 contact the floor surface 13 at long intervals, so that the force of suppressing the vibration of the sewing machine frame 1 in the front and rear direction is high.

The pillar 3 is formed wide in front and back.
The lower end surface is fixed to the upper surface of the base 2 by welding. The horizontal frame 4 is formed to be wide in the front and rear directions like the columns 3, and the lower surfaces at both ends are fixed to the upper end surfaces of the columns 3 by welding. Thus, the support 3 and the horizontal frame 4
Are formed to be wide in the front and rear directions, and therefore, the force for suppressing the vibration of the sewing machine frame 1 in the front and rear direction is particularly strong.

In this sewing machine frame 1, a plurality of sewing machine units 6 (three in FIG. 1 and FIG. 2) are arranged on the upper surface of the horizontal frame 4 in the longitudinal direction. Each sewing machine unit 6
A sewing head 8 for driving the needle 7 and a bed 9 containing a shuttle (not shown) are integrally formed. The sewing machine unit 6 is provided with a pair of front and rear (not particularly limited, three or more) protruding portions 10 protruding from the bottom thereof to the left and right sides, respectively. It is fastened to the horizontal frame 4 by bolts 11. Horizontal frame 4
Are formed wide in front and back, so that the distance between the pair of front and rear fastened portions 10 can be widened. Needless to say, in the horizontally long horizontal frame 4, the space between the right and left fastened portions 10 of the sewing machine unit 6 can be used. Can be widened. For this reason, it is possible to widen the interval between the tightened portions 10 and to stably attach the sewing machine unit 6 to the horizontal frame 4.

A bed 9 is provided on the upper surface of the horizontal frame 4.
The plurality of table holders 15 are substantially flush with the upper surface of the
The table 16 is provided via the. A sewing frame 17 for attaching a work cloth is arranged on the upper surface of the table 16, and is driven on the table 16 back and forth and right and left by a frame driving mechanism (not shown) provided between the horizontal frame 4 and the table 16. .

According to the sewing machine frame 1 of the multi-head sewing machine configured as described above, the sewing machine frame is basically composed of a small number of component parts such as a pair of bases 2, a pair of columns 3, and a horizontal frame 4, and the Since the structure is simple, the number of assembling steps is small, and the cost can be reduced.

Next, FIG. 3 shows a sewing machine frame 20 of the multi-head sewing machine according to the second embodiment, and the number of the sewing machine frames 20 is large (for example, 7 or more; 12 in FIG. 3).
In order to be able to attach the sewing machine unit 6 of the first embodiment, the horizontal frame 4 is lengthened, and the first portion is provided only at the point where the middle support 21 for supporting the middle portion in the length direction of the horizontal frame 4 to the floor 13 is provided. This is different from the embodiment.

The intermediate support 21 includes a base 2 that extends on the floor 13 and extends back and forth, and a support body 22 that stands on each base 2.

According to the present embodiment, in addition to the same effects as the first embodiment, the vibration of the horizontal frame 4 at the middle portion in the length direction is prevented, and the vibration of the horizontal frame 4 is provided at the left and right of the middle portion. By dispersing, the vibration of each part of the horizontal frame 4 can be suppressed. Therefore, even when the number of the sewing machine units 6 is large, the vibration of the sewing machine frame 20 can be suppressed.

FIG. 4 shows a sewing machine frame 24 of a multi-head sewing machine according to a third embodiment. The sewing machine frame 24 is different from the sewing machine frame 24 only in that a middle support 25 is configured to be detachable from the horizontal frame 4. This is different from the two embodiments.

The intermediate support 25 is attached to the horizontal frame 4 by fastening a tightened portion 27 provided at the upper end thereof to the lower surface of the horizontal frame 4 with a bolt 28. In addition, the support 25 on the way is provided with a floor contact portion 26 having a height adjusting portion at a lower end thereof.

According to the present embodiment, in addition to the same effects as those of the second embodiment, it is possible to appropriately attach the intermediate support 25 in accordance with the rigidity of the floor on which the sewing machine frame 24 is installed.

Next, FIG. 5 shows a sewing machine frame 30 of a multi-head sewing machine according to a fourth embodiment. The sewing machine frame 30 connects a middle part in the length direction of the horizontal frame 4 and a middle support 21. Frame 31 as reinforcing member
Only in the point that is provided is different from the second embodiment.

According to the present embodiment, in addition to the same effect as the second embodiment, the vibration at the middle portion where the oblique frame 31 is provided is prevented, and the vibration of the horizontal frame 4 is provided on the left and right sides of the middle portion. By dispersing, the vibration of each part of the horizontal frame 4 can be further suppressed.

FIG. 6 shows a sewing machine frame 35 of a multi-head sewing machine according to a fifth embodiment. Instead of the slanted frame 31 of the fourth embodiment, an intermediate portion in the length direction of the horizontal frame 4 is shown. The fourth embodiment is different from the fourth embodiment only in that a slanted frame 36 as a reinforcing member for connecting the support member 21 and the intermediate support 21 is provided. According to this embodiment, the same effect as that of the fourth embodiment can be obtained.

The present invention is not limited to the configuration of the above-described embodiment, but may be embodied by appropriately changing the scope of the present invention as follows, for example. (1) A concave portion is formed in the high portion of the column 3 and the horizontal frame 4 is fixed in a state fitted in the concave portion.

(2) A hole is provided in the high portion of the column 3, and the horizontal frame 4 is fitted and fixed in the hole.

(3) In order to improve the integration between the support 3 and the base 2 or between the support 3 and the horizontal frame 4, for example, between the support 3 and the base 2 or between the support 3 and the horizontal frame 4. To provide reinforcement ribs or to provide an oblique frame.

(4) In the second to fifth embodiments, two or more columns are provided in the middle.

[0030]

As described above in detail, according to the sewing machine frame of the multi-head sewing machine according to the first aspect of the present invention, vibration can be suppressed with a simple structure.

In addition to the above effects, according to the sewing machine frame of the multi-head sewing machine according to the second aspect of the present invention, even when the number of sewing machine units is large, vibration of the sewing machine frame can be suppressed.

In addition to the above effects, according to the sewing machine frame of the multi-head sewing machine according to the third aspect of the present invention, the effects of the second aspect can be obtained as needed.

In addition to the above effects, according to the invention of claims 4 and 5, vibration of the horizontal frame can be further suppressed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a sewing machine frame of a multi-head sewing machine according to a first embodiment of the present invention.

FIG. 2 is a front view of the sewing machine frame.

FIG. 3 is a front view showing a sewing machine frame of a multi-head sewing machine according to a second embodiment of the present invention.

FIG. 4 is a perspective view showing a sewing machine frame of a multi-head sewing machine according to a third embodiment of the invention.

FIG. 5 is a front view showing a sewing machine frame of a multi-head sewing machine according to a fourth embodiment of the present invention.

FIG. 6 is a front view showing a sewing machine frame of a multi-head sewing machine according to a fifth embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 sewing machine frame 2 base 3 support 4 horizontal frame 6 sewing machine unit 7 needle 8 sewing machine head 9 bed 13 floor surface 20 sewing machine frame 21 intermediate support 24 sewing machine frame 25 intermediate support 30 sewing machine frame 31 inclined frame 35 sewing frame 36 inclined frame

Claims (5)

[Claims] 1. A multi-head sewing machine frame to which a plurality of sewing machine units integrally formed with a sewing machine head for driving a needle and a bed containing a shuttle is mounted on a floor surface with a left and right space. Bases extending forward and backward, a pair of columns standing on the respective columns, and a horizontal frame for attaching the sewing machine unit fixed in a state of being bridged between the columns. Sewing frame of multi-head sewing machine. 2. The sewing machine frame of a multi-head sewing machine according to claim 1, further comprising an intermediate support for supporting an intermediate portion in the length direction of the horizontal frame to a floor surface. 3. The sewing machine frame of a multi-head sewing machine according to claim 2, wherein the intermediate support is configured to be detachable from the horizontal frame. 4. The sewing machine frame of a multi-head sewing machine according to claim 1, further comprising a reinforcing member for connecting a middle part of the horizontal frame in a length direction and the support column. 5. The sewing machine frame of a multi-head sewing machine according to claim 2, further comprising a reinforcing member for connecting a middle part in a length direction of the horizontal frame and the middle support.