JP2885020B2 - Table mechanism of multi-head sewing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a table mechanism of a multi-head sewing machine, and more particularly to a table mechanism of a multi-head sewing machine capable of individually fixing a plurality of sewing tables at set positions.

[0002]

2. Description of the Related Art Conventionally, a multi-head sewing machine having a plurality of sewing machine arms has been put to practical use. In this multi-head sewing machine, a plurality of single-head sewing machines (sewing machine main body) are arranged at predetermined intervals on an upper surface of a base frame, and the same embroidery pattern is formed on a number of flat work cloths corresponding to the number of the single-head sewing machines. Are formed on the sewing table so that a plurality of flat frames holding these work cloths can be attached at the same time. The movable frame is configured to be driven in the X-axis direction via an X-axis drive mechanism, and to be driven in the Y-axis direction via a Y-axis drive mechanism. In this type of multi-head sewing machine, instead of a flat frame used for forming an embroidery pattern on a flat work cloth, a hat frame for embroidering a curved hat is also provided at the tip of the bed portion of the embroidery sewing machine. It is configured so that it can be mounted on a cylinder bed connected continuously. Therefore, in order to mount the hat frame to the cylinder bed, the sewing table is moved by a predetermined distance from a position (hereinafter, referred to as an ascending position) when a flat frame having a height corresponding to the upper surface of the cylinder bed is mounted. It is configured to be raised and lowered by a lifting mechanism to a lowered position (hereinafter, referred to as a lowered position).

[0003]

However, since the conventional sewing table is entirely formed from a single plate, the sewing table moves up and down in common with respect to the whole multi-head sewing machine, and Since it is not a configuration that can be individually lifted and lowered corresponding to a single-head sewing machine, either embroidery sewing on multiple flat work cloths or embroidery sewing on multiple cylinders such as hats is sewn. Was limited to. for that reason,
It has been impossible to simultaneously perform the same embroidery sewing on a flat work cloth and a cylinder such as a hat. The present invention has been made in view of the above-mentioned conventional circumstances, and its purpose is to provide a plurality of sewing tables of the same number or less than the same number in a plurality of sewing machine main portions, so that a flat work cloth and a hat or the like are provided. An object of the present invention is to provide a table mechanism of a multi-head sewing machine capable of simultaneously performing the same sewing on a cylinder.

[0004]

According to a first aspect of the present invention, there is provided a table mechanism for a multi-head sewing machine, comprising: a plurality of sewing machine main bodies; and a work cloth feed mechanism shared by the plurality of sewing machine main bodies. In the multi-head sewing machine provided, a plurality of sewing tables are provided as sewing tables for the plurality of sewing machine main portions, and each sewing table can be individually fixed at a set position. Here, a sewing table corresponding to each of the plurality of sewing machine main bodies is provided, and each sewing table can be individually detached (claim 2 dependent on claim 1). It can be configured in various modes such as a configuration in which a plurality of lifting and lowering support mechanisms for supporting the lifting and lowering are provided (claim 3 depending on claim 1).

[0005]

In the table mechanism of the multi-head sewing machine according to the first aspect of the present invention, a plurality of sewing tables are provided and each sewing table can be individually fixed at a set position. Can be sewn on a flat work cloth at the same time by all the sewing machine main parts, and if some sewing tables are not fixed at the set position, While sewing on a flat work cloth, it is possible to sew on cylinders such as hats with other sewing machine main parts,
Further, in a state where all the sewing tables are not fixed at the set positions, it is possible to sew a cylinder such as a hat by all the sewing machine main bodies.

According to the table mechanism of the present invention, a sewing table corresponding to each of a plurality of sewing machine main bodies is provided, and the plurality of sewing tables can be removed.
When sewing a cylinder such as a hat, only the sewing table of the sewing machine main body for sewing the cylinder such as the hat can be removed to perform the sewing. In the table mechanism according to the third aspect, the lifting support mechanism for supporting the plurality of sewing tables so as to be able to move up and down, respectively, is provided. The sewing table can be switched to the lowering position when sewing is performed on a cylindrical object such as.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, the present invention is applied to a multi-head embroidery machine having three embroidery sewing machines. The multi-head embroidery machine will be described. As shown in FIGS. 1 and 2, the multi-head embroidery machine M is provided with a plane having a predetermined length in the left-right direction on the rear side of the upper surface of the base frame 1 extending in the left-right direction. A sewing machine support plate 2 having a rectangular shape as viewed is provided, and three embroidery sewing machines MH (corresponding to the sewing machine main body) are arranged on the sewing machine support plate 2 at predetermined intervals in a horizontal line. I have. A needle bar case 4 having twelve needle bars (not shown) is mounted on the head of the arm 3 of the embroidery sewing machine MH.
Is mounted, and a needle bar for forming an embroidery pattern with an embroidery thread of a desired color can be alternatively selected.

On the other hand, a bed 6 at the lower end of the pillar 5 connected to the arm 3 is mounted on the sewing machine support plate 2, and a cylinder bed 7 extends forward from a front end of the bed 6. A thread loop supplementer (not shown) is provided at the tip of the bed 7, and a stitch is formed on a work cloth with an embroidery thread of a desired color in cooperation with a sewing needle attached to a selected needle thread. It has become. Here, an upper shaft (not shown) for vertically moving the needle bar and the balance 8 and a lower shaft (not shown) for rotating the thread wheel catcher are rotated by a V-belt 9 connected to a sewing machine motor (not shown). It is driven by a driven drive shaft.

Sewing tables 10A, 10B, and 10C are provided in the longitudinal direction (left and right directions) so as to correspond to the three embroidery sewing machines MH, respectively. These sewing tables 10A, 10B, and 10C support the sewing machines. At the front side of the plate 2, it is disposed so as to be fixed at a set position substantially at the same height as the upper surface of the cylinder bed 7. These sewing tables 10A,
10B, 10C, these sewing tables 10A, 1
Auxiliary tables 1 provided on both left and right sides of 0B and 10C
A movable frame 13 having a rectangular shape in a plan view extending in the left-right direction is mounted on the movable frames 1 and 12. The drive frame 13a at the right end of the movable frame 13 is driven to move in the X-axis direction (left-right direction) by an X-axis drive mechanism (not shown), and the drive frame 13b at the left end is moved to the Y-axis drive mechanism. (Not shown) so as to be moved and driven in the Y-axis direction (front-back direction). Therefore, the movable frame 13 is movable on the XY plane. The movable frame 13, the X-axis drive mechanism and the Y-axis drive mechanism constitute a work cloth feed mechanism.

The three sewing tables 10A, 10B,
10C is configured so as to be individually fixable to a set position (elevated position) and detachable, but the structure for supporting the three sewing tables 10A, 10B, and 10C is shown in FIG.
This will be described with reference to FIG. Each sewing table 10A, 1
A cutout 101 (see FIG. 2) corresponding to the cylinder bed 7 of each embroidery sewing machine MH is provided in each of the sewing tables 10A, 10B, and 10C, and a plurality of protruding pins 102 are attached to the rear end surfaces of the sewing tables 10A, 10B, and 10C. Have been. In addition, the sewing tables 10A, 10A on the front surface of the base frame 1.
Table support plates 14 and 14 are vertically disposed at two locations, that is, a boundary portion of B and a boundary portion of the sewing tables 10B and 10C, and are fixed to the base frame 1.

The table support plates 14, 14 are formed in an inverted L-shape in a side view. The vertical plate portion 14A is provided with two vertically long slots 14a, 14a, and the horizontal plate portion 14B. Left and right 2 from front end toward depth direction
Notch grooves 14b, 14b for fixing are provided at the locations. The fixing bolt 1 is inserted into the vertically long holes 14a, 14a.
6, and the fixing bolts 16 are screwed into screw holes (not shown) provided on the front surface of the middle frame 1a disposed at a substantially middle position in the vertical direction of the base frame 1, thereby supporting each table support. The plates 14 and 14 are configured so that they can be fixed at arbitrary positions in the vertical direction.

Further, the end portions of the sewing tables 10A, 10B, 10C are placed on the upper surface of the horizontal plate portion 14B, and the fixing bolts 16 are inserted from below into the respective fixing notch grooves 14b, so that the respective sewing tables 10A , 10B, and 10C, the sewing tables 10A, 10B, and 10C are fixed at predetermined positions (elevated positions or lowered positions) by being screwed into screw holes (not shown) provided at predetermined positions of the sewing tables. ing. Further, L-shaped positioning plates 17 and 18 are attached to the rear surface of each table support plate 14 at two predetermined upper and lower positions so that the horizontal portions are opposed to each other and the sewing tables 10A, 10B, When 10C is at the raised position, the horizontal portion of the positioning plate 18 at the lower position contacts the lower surface of the central frame 1a. Conversely, when each of the sewing tables 10A, 10B, 10C is at the lowered position, the horizontal position of the positioning plate 18 is at the upper position. The horizontal portion of the positioning plate 17 abuts on the upper surface of the central frame 1a, and the sewing tables 10A, 10A
B and 10C are configured to be positioned at an ascending position and a descending position, respectively.

On the other hand, table support plates 19 and 20 having a U-shaped cross section are screwed to the base frame 1 at the right end of the sewing table 10A and the left end of the sewing table 10C. And, the table support plates 19, 2
When the ends of the left and right sewing tables 10A, 10C are placed on the upper horizontal plate portions 19a, 20a at 0,
When the sewing tables 10A and 10C are placed on the upper surfaces of the lower horizontal plate portions 19b and 20b, the sewing tables 10A and 10C are placed in the lowered position. It is configured as follows. The table support plates 19, 20 are located at positions where the tips of the lower horizontal plate portions 19b, 20b project forward with respect to the upper horizontal plate portions 19a, 20a. When the sewing tables 10A, 10C are placed, the left and right sewing tables 10A, 10A are placed on the upper horizontal plate portions 19a, 20a.
Sewing table 10 on the left and right, as compared with the case where C is placed.
A and 10C are configured to be the front positions.

The sewing tables 10A, 10C on the left and right sides are supported at the ascending position or the descending position by table support plates 19, 20 at the left and right positions and table support plates 14, 14 disposed at the left and right of the portion near the center. The central sewing table 10B is supported at the ascending position or the descending position by the table support plates 14, 14 disposed on the left and right of the portion near the center. In the horizontal frame 1b on the rear side of the base frame 1, the three sewing tables 10A, 10B, and 10C are in the lowered position, and the pins 10 on the rear end surfaces of the sewing tables 10A, 10B, and 10C are located.
A plurality of stop plates 21 having pin insertion holes 21a at positions corresponding to 2 are fixed. Further, when the three sewing tables 10A, 10B, and 10C are in the raised position, the cover 22 having the pin insertion holes 22a at a plurality of positions corresponding to the pins 102 on the rear end surfaces of the sewing tables 10A, 10B, and 10C is attached to the base frame. 1 at the rear position.

The operation of the multi-head embroidery machine described above will be described. 3 to 7 are views showing a use state,
3 and 6 show three sewing tables 10A, 10B, 10
FIG. 4 shows a state in which C is in the ascending position, and FIG.
5C and 7C show a state in which three sewing tables 10A, 10B, and 10C are in a lowered position. In the state shown in FIGS. 3 and 6, sewing is performed with a flat frame, in the state shown in FIG. Perform sewing in the frame B.

In the state shown in FIG. 3 and FIG.
A is placed on each upper surface of the left table support plate 19 and the left table support plate 14 and is fixed by fixing bolts 16, and the sewing table 10B is placed on each upper surface of the left and right table support plates 14, 14. The sewing table 10C is mounted on the upper surfaces of the right table support plate 20 and the right table support plate 14 and is fixed by the fixing bolts 16. At this time, the pins 102 on the rear end surfaces of all the sewing tables 10A, 10B, 10C are inserted into the pin insertion holes 22a of the cover 22. Thus, all the sewing tables 10
When A, 10B, and 10C are at the ascending position, sewing with a flat frame is performed in all the embroidery sewing machines MH.

When sewing the hat frame B with only one embroidery sewing machine MH and simultaneously sewing both flat frames with the other two embroidery sewing machines MH, as shown in FIG. Loosen the fixing bolt 16, pull out the sewing table 10B forward, and remove it. When sewing the hat frame B with two embroidery sewing machines MH and sewing both flat frames with the other one embroidery sewing machine MH at the same time,
The sewing table 10A on either the left or right from the state of FIG.
Alternatively, the fixing bolt 16 on the back surface of the sewing table 10C is loosened, and the sewing table 10A or 10C is pulled forward and removed.

When sewing the hat frame B with the three embroidery sewing machines MH, as shown in FIGS. 5 and 7, all the fixing bolts 16 of both the table support plates 14, 14 are loosened, and these table supports are sewn. The plates 14, 14 are moved downward, and the table support plates 14, 14 are fixed by the fixing bolts 16 in the lowered position. Then, the left and right end portions of the left and right sewing tables 10A and 10C are placed on the horizontal plate portions 19b and 20b below the left and right table support plates 19 and 20, respectively. The right and left ends of the sewing tables 10A and 10C and the left and right ends of the central sewing table 10B are placed and fixed with fixing bolts 16 respectively. At this time, the pins 102 on the rear end surfaces of all the sewing tables 10A, 10B, 10C are inserted into the pin insertion holes 21a of the stop plate 21.

As described above, according to the multi-head embroidery machine M, all three embroidery sewing machines MH can sew a flat frame and one or two embroidery sewing machines MH.
Can simultaneously sew a hat frame B and simultaneously sew a flat frame with two or one embroidery sewing machine MH.
The hat frame B can be sewn with all the embroidery sewing machines MH on the table. In the above embodiment, each embroidery sewing machine M
Although the sewing tables 10A, 10B, and 10C are divided for each H, when the number of the embroidery sewing machines MH is large, for example, one sewing table is provided for each of the two embroidery sewing machines MH and divided into groups. Is also good.

Next, a multi-head embroidery machine M1 according to another embodiment will be described with reference to FIGS. 11 to 1
The embroidery machine M1 shown in FIG. 3 includes three embroidery sewing machines MH1.
The sewing tables 10A, 10B, and 10C corresponding to the above are individually raised or lowered. That is, a pair of table support plates 114, 114 constituting the lifting support mechanisms 31, 32, 33 of the sewing tables 10A, 10B, 10C are provided at both ends of the sewing tables 10A, 10B, 10C, respectively. Each table support plate 114 has a vertically long slot 114a.
A notch groove for fixing (not shown), and two upper and lower positioning plates 17 and 18 are provided in substantially the same manner as in the above embodiment. Note that the configuration of each member is substantially the same as that of the above-described embodiment, and thus description thereof will be omitted. Furthermore, the same members as those in the above embodiment are denoted by the same reference numerals.

In this multi-head embroidery machine M1, FIG.
As shown in the figure, all the lifting support mechanisms 31, 32, 33 are raised and all the sewing tables 10A, 10B, 10
C can be set to the ascending position to sew a flat frame, and as shown in FIG. 12, a part of the elevating and lowering support mechanism 32 is lowered, and a part of the sewing table 10B is set to the lowering position to set the flat frame. And the sewing of the hat frame B can be performed at the same time, and further, all the lifting and lowering support mechanisms 31, 32, and 33 are lowered, and all the sewing tables 10A, 10B, and 10C are lowered to sew the hat frame B. It can be performed. According to the multi-head embroidery machine M1 of this embodiment, the sewing table 1
Since the members 0A, 10B, and 10C can be independently raised or lowered without removing them, labor can be saved and labor can be saved.

As described above, according to the table mechanism of the multi-head sewing machine according to the present invention, a plurality of sewing tables are provided as sewing tables for a plurality of sewing machine main portions, and each sewing table is individually set at a set position. By fixing the sewing table and selecting the use state of each sewing table, it is possible to simultaneously sew a flat frame and sew a cylinder such as a hat frame with one multi-head sewing machine.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a multi-head embroidery machine according to an embodiment.

FIG. 2 is a plan view of a main part of the multi-head embroidery machine of FIG. 1;

FIG. 3 is a schematic front view showing a state in which all of the sewing tables in the multi-head embroidery machine of FIG.

FIG. 4 is a schematic front view showing a state where a part of a sewing table in the multi-head embroidery machine of FIG. 1 is at a lowered position.

FIG. 5 is a schematic front view showing a state where all sewing tables in the multi-head embroidery machine of FIG. 1 are in a lowered position.

FIG. 6 is a schematic side sectional view showing a state in which a sewing table in the multi-head embroidery machine of FIG.

FIG. 7 is a schematic side sectional view showing a state where a sewing table in the multi-head embroidery machine of FIG. 1 is in a lowered position.

FIG. 8 is an enlarged front view of a main part showing a table support plate in the multi-head embroidery machine of FIG. 1;

FIG. 9 is an enlarged plan view of a main part showing a table support plate in the multi-head embroidery machine of FIG. 1;

FIG. 10 is an enlarged side sectional view of a main part of the multi-head embroidery machine of FIG. 1;

FIG. 11 is a schematic front view showing a state in which all of the sewing tables in the multi-head embroidery machine according to another embodiment are in the raised position.

12 is a schematic front view showing a state where a part of a sewing table in the multi-head embroidery machine of FIG. 11 is in a lowered position.

[Explanation of symbols]

 M Multi-head embroidery machine MH Embroidery sewing machine (sewing machine main body) 10A Sewing table 10B Sewing table 10C Sewing table 13 Movable frame 13a Right end drive frame 13b Left end drive frame 14 Table support plate 14a Slot 14b Notch for fixing Groove 16 Fixing bolt 19 Table support plate 20 Table support plate M1 Multi-head embroidery machine MH1 Embroidery sewing machine 31 Elevating support mechanism 32 Elevating support mechanism 33 Elevating support mechanism

Claims (3)

(57) [Claims] 1. A multi-head sewing machine provided with a plurality of sewing machine bodies and a work cloth feed mechanism shared by the plurality of sewing machine bodies, wherein a plurality of sewing tables are provided as sewing tables of the plurality of sewing machine bodies. A table mechanism for a multi-head sewing machine, wherein each sewing table can be individually fixed at a set position. 2. A table mechanism for a multi-head sewing machine according to claim 1, wherein a sewing table corresponding to each of said plurality of sewing machine main bodies is provided, and said sewing tables are individually detachable. 3. The table mechanism for a multi-head sewing machine according to claim 1, further comprising a plurality of lifting and lowering support mechanisms for supporting the plurality of sewing tables so as to be able to move up and down, respectively.