JPH08243288A - Multi-head embroidering machine - Google Patents

Abstract

PURPOSE: To lower cost involved by practically making movable tables lighter in weight as compared with an integrated product, letting the tables be easily mounted/demounted by a single worker, and thereby eliminating elevating means, or simplifying the structure involved much more even if the elevating means can not be eliminated in the multi-head embroidering machine capable of embroidering work cloth in a cylindrical shape such as a tee-shirt, a sweater and the like. CONSTITUTION: The multi-head embroidering machine is equipped with embroidering heads 7, cylindrical beds 8, tables, an embroidering frame 20, and with a drive frame 21. The tables are divided so as to be formed in a stationary table 12 on the depth side, and at least in two movable tables 13 on this side, which are divided so as to be allocated to the respective cylindrical beds 8, and the respective movable tables 13 are so designed that they can be selectively supported on support means 15, 16, 17 and 18 and the like between at an elevated position roughly identical to the height of each cylindrical bed 8 and at a lowered position lower than each cylindrical bed 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-head embroidery sewing machine having a plurality of embroidery heads and a tubular bed.

[0002]

2. Description of the Prior Art Multi-head embroidery capable of embroidering not only a cloth before sewing or a flat work cloth such as a handkerchief but also a tubular work cloth such as a sewn T-shirt or a sweater. In the sewing machine 51, as shown in FIGS. 5 and 6, the same number of tubular beds 53 are provided below each of the plurality of embroidery heads 52. A table is provided at substantially the same height as the tubular bed 53 for embroidering a flat work cloth, but when embroidering the flat work cloth, the table is removed or lowered. It must be. For example, in the embroidery sewing machine disclosed in Japanese Patent Laid-Open No. 6-246085, as shown in FIGS. 5 and 6, the table is a fixed table 54 on the back side,
The movable table 55 is formed separately from the movable table 55 on the front side, and the movable table 55 is lowered by an elevating drive means (not shown).

After the movable table 55 is detached or lowered in this way, a part of the tubular work cloth 57 is stretched over the embroidery frame 56 arranged above each tubular bed 53, and the part thereof is stretched. Cylindrical bed 53 is inserted just below the
The other part of 7 is suspended from the embroidery frame 56 by its own weight. Then, the embroidery frames 56 are simultaneously driven back and forth and left and right by the drive frame 58, and the needle 59 provided on the embroidery head 52 and the shuttle (not shown) incorporated in the tubular bed 53 cooperate to form the work cloth 57. A seam is formed.

[0004]

In the above-mentioned conventional example, since the movable table 55 as a whole is formed of a large laminated plate of an integral body and is very heavy, it is very difficult for one operator to remove it. there were. Therefore, as in the above-mentioned Japanese Patent Laid-Open No. 6-246085, it is necessary to provide a sturdy lifting drive means (not shown) having a large load capacity in order to lift and lower the heavy movable table 55, resulting in a considerable cost increase. .

Further, when performing embroidery of a small lot, it is sufficient to operate only a part of the plurality of embroidery heads 52, but even in this case, the entire movable table 55 is removed or lowered. , There was no space to put small items such as scissors and tweezers, which was a problem.

Further, since the entire movable table 55 is removed or lowered, the movable table 55 cannot be used for supporting the embroidery frame 56 or the drive frame 58 during movement. For this reason, it is not possible to prevent the embroidery frame 56 from hanging down frontward due to the weight of the work cloth 57 (hanging down toward the front side). The work cloth 57 may be loosened in the embroidery frame 56.

Therefore, an object of the present invention is to substantially reduce the weight of the movable table as compared with the conventional integrated body,
A single operator can easily attach and detach it so that the lifting means can be omitted, or even if the lifting means is not omitted, it can be simplified, thereby reducing the cost.
Further, when removing or lowering the movable table, some of the movable table is left at substantially the same height as the tubular bed, and the movable table is used as a space for placing small articles such as scissors or tweezers, The purpose is also to prevent the front drop of the embroidery frame by utilizing the movable table to support the driving frame during movement.

[0008]

In order to solve the above-mentioned problems, the first invention is to provide at least two embroidery heads,
At least two tubular beds provided below each embroidery head, a table provided at substantially the same height as the tubular beds, and at least two embroidery frames arranged above each tubular bed; In a multi-head embroidery sewing machine including a drive frame that drives the embroidery frame at the same time, the table is divided into a fixed table on the back side and at least two movable tables on the front side that are divided for each tubular bed, and The feature is that the movable table can be removed separately.

A second aspect of the present invention is a multi-head embroidery sewing machine including an embroidery head, a tubular bed, a table, an embroidery frame and a drive frame similar to those described above, in which the table is a fixed table on the back side and each tube. Each bed is divided into at least two movable tables on the front side, and each movable table is supported by means of a supporting means to have a raised position at substantially the same height as each tubular bed and a lowered position lower than each tubular bed. It is characterized by being able to selectively support and.

Here, the following can be exemplified as the "supporting means". The sewing machine includes a fitted portion provided at a raised position and a lowered position of the machine frame, and a fitting portion provided on each movable table so as to be fitted to the fitted portion. In this case, it is preferable that the fitting portion is detachably attached to the movable table. A movable leg connected to each movable table, and a fixed leg for guiding up and down movement of the movable leg. It is preferable that the upper ends of the movable legs are connected to the positions of the centers of gravity of the respective movable tables. In the case of this supporting means, an elevating drive means for elevating the movable table may be provided. Examples of the elevating and lowering drive means include a rack provided on a movable leg, a pinion that meshes with the rack, a motor or a handwheel that rotates the pinion, and a link and a spring. .

[Lower position than each tubular bed]
Are preferably at least at two different heights.

[0012]

When the multi-head embroidery sewing machine of the present invention is used to embroider a cloth before sewing or a flat work cloth such as a handkerchief, each movable table has substantially the same height as each cylindrical bed. To support. In this state, the stitches are formed on the flat work cloth by the cooperation of the needle of the embroidery head and the hook of the tubular bed while moving the embroidery frame stretched with the flat work cloth by the drive frame.

Next, when embroidering on a tubular work cloth such as a sewn T-shirt or a sweater, each movable table is removed from substantially the same height as each tubular bed, and more preferably each is. It is supported at a lower position than the tubular bed.
At this time, the movable table is divided into at least two parts, each of which is substantially lighter than the conventional one, so that even one operator can easily hold it by hand. Can be detached. Therefore, the lifting / lowering means of the movable table can be omitted, or the lifting / lowering means can be simplified.

Further, by leaving a part of the movable table at substantially the same height as the cylindrical bed, the movable table can be used as a space for placing small items such as scissors or tweezers, or the movable table can be moved during embroidery. Alternatively, it can be used to support the drive frame to prevent the embroidery frame from hanging down.

Then, when a part of the tubular work cloth is stretched on the embroidery frame and the tubular bed is inserted just below the part, the other part of the work cloth hangs down from the embroidery frame by its own weight.
At this time, if the movable table supported at the lowered position receives the hanging lower end portion of the work cloth, the front hanging of the embroidery frame can be more reliably prevented. In this state, while the embroidery frame is being moved by the drive frame, the stitches are formed on the tubular work cloth by the cooperation of the needle of the embroidery head and the shuttle of the tubular bed.

[0016]

Embodiments of the present invention will now be described with reference to FIGS.
It will be described with reference to FIG. Multi-head embroidery sewing machine 1 of this embodiment
Is a lower machine frame 2 formed by connecting shaped steel in a horizontally long rectangular parallelepiped shape.
And an upper machine casing 3 fixed on the lower machine casing 2. The upper machine casing 3 includes a large number of legs 4 erected from the lower machine casing 2, and a pair of front and rear beams 6 extending in the left-right direction and supported by upper ends of the legs 4 via level adjusting bolts 5. Consists of. On this beam 6, for example, four embroidery heads 7 are placed and fixed at their base portions 7a, and a tubular bed 8 is projected forward from each base portion 7a so that the embroidery heads 7 are below the respective embroidery heads 7. Is located in. Each embroidery head 7 is provided with a plurality of needles 9, and a color conversion drive device 10 provided on the right side of the upper machine casing 3 moves one needle 9 in each embroidery head 7 via a rod 11. It is designed to be selected and placed at the sewing position. A hook, a bobbin wound with a lower thread, and the like are built in each tubular bed 8.

A table is provided at substantially the same height as the tubular bed 8, and the table has a fixed table 12 on the back side and at least four movable front sides that are divided for each tubular bed 8. The table 13 is formed separately.
Since the fixed table 12 is placed and fixed on the beam 6 and extends not only to the back side but also to the front side on the left and right sides, it has a planar U-shape. Each movable table 13 has a plane rectangular shape and has a cutout portion 14 in which the tubular bed 8 is accommodated.

On the left and right sides of the lower surface of each movable table 13, a pair of fitting portions 15 made of square pipe material are detachably attached by a toggle clamp 30 and project backward. The toggle clamp 30 is shown in FIGS.
As shown in FIG. 3, a support member 32 attached to the seat 31 on the lower surface of the movable table 13, two levers 33 and 34 pivotally attached to the support member 32, and a connector 35 connecting the both levers 33 and 34. A handle 36 provided on one lever 33 and a holding portion 38 attached to the other lever 34 via a length adjusting bolt 37. And
When the lever 33 is pulled up as shown in FIG. 6 from the state in which the lever 33 is pulled as shown in FIG. 5, the lever 34 is tilted in conjunction with that, and the holding portion 38 presses the fitting portion 15 against the movable table 13. To stop it. Mating part 1
When removing 5 from the movable table 13, on the contrary,
All you have to do is defeat 3, and you can remove it with one touch.

This fitting part 15 is connected to the next fitting parts 16, 1
By inserting the movable table 13 into each movable table 13,
Can be selectively supported in an ascending position and a descending position. A screw type clamp 19 is provided on each of the fitted parts 16, 17, and 18, so that the inserted fitting part 15 can be tightened and fixed from the outside.

Four pairs of fitted parts 16 made of a bracket material are attached to the lower surface of the fixed table 12. When the fitting portion 15 is inserted into the fitting portion 16 and the movable table 13 is attached to the fitting portion 15, the movable table 13 comes to a raised position of substantially the same height as the tubular bed 8. Four pairs of fitted parts 17 made of square pipe material are attached to the upper portions of the legs 4. When the fitting portion 15 is inserted into the fitted portion 17 and the movable table 13 is attached to the fitting portion 15, the movable table 13 is attached to the tubular bed 8
It comes to a first descending position which is lower than the upper surface by about 150 mm. Four pairs of fitted parts 18 made of square pipe material are attached to the middle part of the leg 4. The fitting portion 15 is inserted into the fitted portion 18, and the movable table 13 is inserted into the fitting portion 15.
When the table is attached, the movable table 13 comes to a second lowered position which is lower than the upper surface of the tubular bed 8 by, for example, about 300 mm.

Above the fixed table 12 and the movable table 13, there are provided four embroidery frames 20 arranged above each tubular bed 8 and a drive frame 21 for simultaneously driving the embroidery frames 20. . The drive frame 21 is composed of a frame body 22 having a T-shape which lies sideways, and an arm portion 23 projecting forward from the frame body 22, and the embroidery frame 20 can be attached to the front end of the arm portion 23. . The drive frame 21 is supported movably in the front-rear direction and the left-right direction along a front-rear rail 24 and a left-right rail 25 provided on the fixed table 12, and is driven by a pulse motor (not shown). . The drive frame 21 moves not only in the upper region of the fixed table 12 but also in the upper region of the movable table 13.

A multi-head embroidery sewing machine 1 constructed as described above.
When embroidering on a flat work cloth such as a cloth before sewn or a handkerchief by using, the fitting section 16 is fitted to the fitting section 16 as shown by the solid lines in FIGS. 2 and 4. After inserting 15 and tightening with the clamp 19, the movable table 13 is attached to the fitting portion 15 with the toggle clamp 30, and each movable table 13 is supported at substantially the same height as each tubular bed 8. In this state, the embroidery frame 2 with a flat work cloth
A stitch is formed on the work cloth by the cooperation of the needle 9 of the embroidery head 7 and the shuttle of the tubular bed 8 while moving 0 by the drive frame 21.

Next, when embroidering on a tubular work cloth such as a sewn T-shirt or a sweater, the toggle clamp 30 is loosened and the movable table 13 is removed from the fitting portion 15 to be fitted. The fitting portion 15 is removed from the portion 16 and
And, as shown by the chain double-dashed line portion in FIG. 4, after inserting the fitting portion 15 into the fitted portion 17 or the fitted portion 18 and tightening the clamp 19, the movable table is attached to the fitting portion 15. Thirteen
Attached with the toggle clamp 30, and each movable table 13
Are supported in a first lowered position or a second lowered position lower than the respective tubular beds 8.

At this time, the movable table 13 is divided into four parts, each of which is substantially lighter in weight than the conventional integrated body, so that even one operator can easily handle it. You can take it in and out. Therefore, as in this embodiment,
The means for raising and lowering the movable table 13 can be omitted.
Further, in this embodiment, the movable table 13 is moved to the fitting portion 1.
Since the 5 is removable, the weights of the two are separated and each can be easily held by hand. Further, while the pair of fitting portions 15 are attached to the movable table 13, the fitting portions 15 can be inserted into the fitted portion 17 or the like, but the pair of fitting portions 15 can be simultaneously inserted into the fitted portion 15. It is difficult to insert it so that it fits well into 17th grade. However, as in this embodiment,
This can be easily performed by removing the fitting portions 15 from the movable table 13 and inserting the fitting portions 15 one by one into the fitted portions 17 or the like.

Further, a part of the movable table 13 (the second movable table 13 from the right in FIG. 1) is left at substantially the same height as the tubular bed 8, and the movable table 13 is attached to a small object 27 such as scissors or tweezers. It can be used as a space for placing. In addition, the embroidery frame 20 that is moving the movable table 13
Alternatively, it is used to support the drive frame 21 (for example, the embroidery frame 20
Alternatively, an attachment that supports the drive frame 21 from below is movably provided on the movable table 13. It is also possible to prevent the embroidery frame 20 from hanging down.

When a part of the tubular work cloth 26 is attached to the embroidery frame 20 and the tubular bed 8 is inserted just below the part, the other portion of the work cloth 26 is sewn by its own weight. Hang from 20. At this time, in order that the movable table 13 can properly receive the hanging lower end portion of the work cloth 26,
Depending on the size of the work cloth 26, the supporting position of the movable table 13 may be selected to be the first descending position or the second descending position. In this state, the stitches are formed on the work cloth 26 by the cooperation of the needles 9 of the embroidery head 7 and the shuttle of the tubular bed 8 while moving the embroidery frame 20 by the drive frame 21. At this time, since the movable table 13 bears a part of the load of the work cloth 26, the force for pulling down the embroidery frame 20 is reduced, and the front hanging of the embroidery frame 20 is reliably prevented. Therefore,
Sliding contact between the work cloth 26 and the front end of the tubular bed 8 can be avoided,
It is possible to prevent problems such as the seams being caught or the work cloth 26 loosening in the embroidery frame 20.

In addition, the present invention is not limited to the above-described embodiments, and for example, the shapes and configurations of the respective parts may be appropriately modified and embodied as follows, without departing from the spirit of the present invention. It is possible.

(1) It is also possible to embroider the tubular work cloth 26 in a state where each movable table 13 is removed from the raised position and is not supported in the lowered position. In this case, there is no action to bear a part of the load of the work cloth 26. (2) Providing elevating / lowering drive means for elevating / lowering the movable table 13 in multiple steps or steplessly (continuously) while supporting each movable table 13. Since each movable table 13 is substantially lightened, the elevating and lowering drive means can be a simple one having a small load capacity. (3) The front edge of each movable table 13 can be bent downward by a hinge so that when folded, it is easy to lean toward the back of the multi-head embroidery sewing machine 1.

[0029]

As described in detail above, according to the multi-head embroidery sewing machine of the present invention, the weight of the movable table is substantially lighter than that of the conventional integrated body, so that even one operator can easily attach and detach the table. In this way, the elevating means can be omitted, or even if the elevating means is not omitted, the simplification can be simplified, thereby reducing the cost. Further, when removing or lowering the movable table, some of the movable table is left at substantially the same height as the tubular bed, and the movable table is used as a space for placing small articles such as scissors or tweezers, The movable table can be used as a support for the moving drive frame to prevent the embroidery frame from hanging down.

[Brief description of drawings]

FIG. 1 is a front view of a multi-head embroidery sewing machine according to an embodiment of the present invention when a movable table is installed in a lowered position.

FIG. 2 is a front view of the multi-head embroidery sewing machine when the movable table is installed in a raised position.

FIG. 3 is a plan view of the multi-head embroidery sewing machine.

FIG. 4 is a sectional view taken along line IV-IV of FIG. 3;

FIG. 5 is a perspective view of relevant parts showing a toggle clamp of the movable table.

FIG. 6 is a perspective view of a main part when the fitting part is attached to the movable table by the toggle clamp.

FIG. 7 is a front view of a conventional multi-head embroidery sewing machine when a movable table is installed in a raised position.

FIG. 8 is a front view of the multi-head embroidery sewing machine when the movable table is installed in a lowered position.

[Explanation of symbols]

 1 Multi-head embroidery sewing machine 7 Embroidery head 8 Tubular bed 12 Fixed table 13 Movable table 15 Fitting part 16 Fitted part 17 Fitted part 18 Fitted part 19 Clamp 20 Embroidery frame 21 Drive frame 26 Work cloth 30 Toggle clamp

Claims (4)

[Claims] 1. At least two embroidery heads, at least two tubular beds provided below each embroidery head, a table provided at substantially the same height as the tubular beds, and above each tubular bed. In a multi-head embroidery sewing machine having at least two embroidery frames arranged in a row, and a drive frame for driving the embroidery frames at the same time, the table is divided into a fixed table on the back side and a front side divided for each of the tubular beds. A multi-head embroidery sewing machine, characterized in that it is divided into at least two movable tables on the side and each movable table can be detached separately. 2. At least two embroidery heads, at least two tubular beds provided below each embroidery head, a table provided at substantially the same height as the tubular beds, and above each tubular bed. In a multi-head embroidery sewing machine having at least two embroidery frames arranged in a row, and a drive frame for driving the embroidery frames at the same time, the table is divided into a fixed table on the back side and a front side divided for each of the tubular beds. At least two movable tables on the side, and each movable table is selectively supported by a supporting means between a raised position at substantially the same height as each tubular bed and a lowered position lower than each tubular bed. A multi-headed embroidery sewing machine characterized by being able to be supported by. 3. The supporting means comprises a fitted portion provided at an ascending position and a descending position of a machine frame, and a fitting portion provided at each movable table so as to be fitted to the fitted portion. The multi-head embroidery sewing machine according to claim 2. 4. The multi-head embroidery sewing machine according to claim 3, wherein the fitting portion is detachably attached to the movable table.