JP4154167B2 - sewing machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sewing machine including a large table for sewing a large work cloth.
[0002]
[Prior art]
6 and 7 show a conventional double-head embroidery sewing machine 50 for sewing a large work cloth. The embroidery sewing machine 50 includes a sewing machine frame 51, a large (for example, 4 m square in plan view) table 52 that is horizontally supported by the sewing machine frame 51, and an upper frame 51 a that extends from the left to the right. Two sewing heads 53 arranged in a row, a bed 54 disposed immediately below each of the sewing heads 53, a needle bar 53a supported by the sewing machine head 53, and a shuttle built in the bed 54 (illustrated). The main shaft drive mechanism 55 for driving the abbreviation), a rectangular embroidery frame 56 placed on the table 52 and on which the work cloth W is stretched, and the embroidery frame 56 are driven back and forth and right and left on the table 52. And a frame driving mechanism 57. The frame driving mechanism 57 is disposed on the left rear side of the table 52 in plan view, and is also disposed on the right side of the table 52 and the Y direction frame driving mechanism 57a that drives the embroidery frame 56 in the longitudinal direction of the sewing machine. And an X-direction frame drive mechanism 57b for driving 56 in the left-right direction of the sewing machine. A portion 52a of the table 52 in front of the sewing head 53 is removable so that an operator can approach the sewing head 53 and the bed 54 within about 1 m for maintenance.
[0003]
The embroidery sewing machine 50 has a control panel 61 for inputting an operation instruction above the table 52, displaying the operation state of the machine, and displaying the contents of the input instruction, and the control panel 61 below the table 52. And a control device 60 including a control unit 62 that controls the operation of the entire machine based on the operation instruction input to the machine. The control unit 62 is connected to electrical components provided on the control panel 61, the sewing machine head 53, the bed 54, the main shaft drive mechanism 55, the frame drive mechanism 57, and the like. A power switch, a fuse, an AC outlet, etc. (all not shown) are provided. The control panel 61 is disposed on the right front side on the table 52 in plan view. The control unit 62 is disposed below the table 52 on one end side of the upper frame 51a. Further, power transformers 63 and 64 are also supported beside the control unit 62.
[0004]
As described above, in this type of embroidery sewing machine 50, the sewing machine head 53, the bed 54, and the spindle driving mechanism 55, which are heavy mechanical elements, are disposed in the center in the front-rear direction of the sewing machine in plan view. Since the drive mechanism 57 is provided closer to the rear side of the sewing machine in a plan view, the center of gravity is located behind the center of the sewing machine in a plan view. For this reason, the sewing machine frame 51 is configured to be firmly supported around the rear side of the sewing machine, and heavy electrical components such as the power transformers 63 and 64 are supported by this strong part. ing. And the control part 62 is also arrange | positioned here for the reason of making it easy to wire by arrange | positioning electrical components centrally.
[0005]
[Problems to be solved by the invention]
However, since the control unit 62 is below the large table 52 and is supported substantially in the center in the front-rear direction of the sewing machine in plan view, the main power switch provided on the front panel is turned on or the fuse is replaced. However, in order to insert the power plug into the AC outlet, as shown in FIG. 7, the operator has to sink into the lower side of the table 52, and there is a problem that the operability is poor.
[0006]
The objective of this invention is providing the sewing machine provided with the large sized table which can solve the said subject and can improve the operativity of the control part of a control apparatus.
[0007]
[Means for Solving the Problems]
The sewing machine of the present invention includes a table having a front and rear width of 2000 mm or more supported by a sewing machine frame, an operation unit for inputting an operation instruction above the table, and an operation input to the operation unit below the table. In a sewing machine comprising a control device including a control unit having a main power switch and controlling the operation of the machine based on instructions, a rectangular base frame that is long in the front and rear in plan view, and casters respectively attached to the four corners thereof A frame separate from the sewing machine frame, and on the base frame, outputs at least the control unit of the control device and the input voltage according to the power supply voltage of the electrical components of each part of the sewing machine. The power transformer, which is separate from the control device, is arranged so that the control unit and the power transformer In the lower position of the end or side edge portion (or the lower position of the front and side edge portions of the table), to be relatively movable supported with respect to the table, the frame of the further body, upper end the table top A support portion that supports the operation portion and extends to a higher position, and a concave portion that is omitted in a rectangular shape in a plan view is provided at a corner portion of the table, and the separate frame is provided in the corner portion in a plan view. The support portion is formed so that the support portion is positioned in the concave portion when arranged close to each other. This support part can support other parts of the control device, such as a display part.
[0008]
The “front end or side end of the table” is preferably within a range of 350 mm from the front or side edge of the table to the main power switch of the control unit in plan view.
[0009]
The control unit is not particularly limited, and includes a CPU (Central Processing Unit), a memory, an input / output interface, and the like. The display unit of the control device, the operation unit, and an input device (for example, a sewing head) Connected to an output device (for example, a driving motor for a spindle of a sewing machine head, a needle switching device, a driving motor for an embroidery frame, etc.) via an input / output interface. Exemplify what will be done.
[0011]
The separate frame further illustrates an aspect configured to support a high-voltage power transformer connected between a power source and the power transformer .
[0013]
In the separate frame, the power transformer is disposed behind the control unit, and the high-voltage power transformer is disposed behind the control unit, so that the control unit is directed toward the sewing machine frame. An example in which the power transformer and the high voltage power transformer are arranged in a line is illustrated.
[0015]
The operation unit is not particularly limited, and includes, for example, a jog switch, a keyboard, and the like. As the display unit, for example, a CRT display, a fluorescent display tube display, a plasma display, a liquid crystal display, or the like is used. Although it does not specifically limit as said operation part and said display part, It can also be set as the aspect with which both were integrated. Examples of the support portion include a support, a rotatable or bendable arm, and a stand that can be raised and lowered, etc., and these may directly support the operation portion of the control device, You may support via the stand | base which can mount an operation part etc.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
1 to 4 show a two-head embroidery sewing machine 1 of a first embodiment embodying the present invention. The embroidery sewing machine 1 includes a sewing machine frame 2, a large (for example, about 4 m square in plan view) table 3 that is horizontally supported by the sewing machine frame 2, and an upper left and right extending over the table 3. Two sewing heads 4 arranged in a frame 18, a bed 5 disposed immediately below each sewing head 4, a needle bar 4 a supported by the sewing head 4, and a shuttle built in the bed 5 A spindle driving mechanism 6 for driving (not shown), a rectangular embroidery frame 9 placed on the table 3 on which the work cloth W is stretched, and the embroidery frame 9 on the table 3 in the front, rear, left and right directions And a frame driving mechanism 10 for driving. However, the embroidery frame 9 does not move to the near-side corner portion 10 at the right end of the table 3 and the portion behind it. The frame drive mechanism 10 is disposed on the left rear side of the table 3 in plan view, and is also disposed on the right side of the table 3 and the Y direction frame drive mechanism 10a that drives the embroidery frame 9 in the longitudinal direction of the sewing machine. And an X-direction frame drive mechanism 10b for driving 9 in the horizontal direction of the sewing machine. A portion 3a of the table 3 in front of the sewing head 4 is removable so that an operator can approach the sewing head 4 and the bed 5 within about 1 m for maintenance.
[0017]
In the embroidery sewing machine 1, a heavy machine element 4, a bed 5, and a main shaft drive mechanism 6 are arranged in the center in the front-rear direction of the sewing machine in plan view, but the frame drive mechanism 10 in plan view. Since it is provided on the rear side of the sewing machine, the center of gravity is on the rear side of the center of the sewing machine in plan view. For this reason, the sewing machine frame 2 is configured to be firmly supported around the rear side of the sewing machine. Specifically, the sewing machine frame 2 is disposed on the floor surface with a space left and right, and extends in a plan view from the substantially center of the sewing machine in the front-rear direction to the rear, and a front end side of the base 15 A vertical frame 16 erected on the top, a rear vertical frame 17 erected on the center and the rear end of the base 15, and an upper frame 18 spanned between the upper ends of the left and right vertical frames 16. And the lower frame 19 supported by the middle and high portions of the vertical frames 16 and the rear lower frame 20 supported by the left and right rear vertical frames 17 so as to be firmly supported around the rear side of the sewing machine. It is configured as follows.
[0018]
The embroidery sewing machine 1 has a control panel 31 for inputting an operation instruction above the table 3, displaying the operation state of the machine, and displaying the contents of the input instruction, and the control below the table 3. A control device 30 including a control unit 32 that controls the operation of the entire machine based on an operation instruction input to the panel 31 is provided.
[0019]
The control panel 31 of this example includes a CPU, a memory, an input / output interface (not shown), and the like, and is written on a computer-readable recording medium such as a flexible disk or an IC memory card as shown in FIG. An operation unit including a medium input unit 34 for reading embroidery pattern data and inputting the embroidery pattern, a jog switch 35a for moving and aligning the embroidery frame 9, and other control switches 35b of the embroidery sewing machine 1 35 and a display unit 36 using a liquid crystal display. The display unit 36 can display the input embroidery pattern, the progress of the embroidery during operation, and the like by enlarging or reducing it or by color-coding it for each thread.
[0020]
The control unit 32 of this example includes a CPU, a memory, an input / output interface, and the like, and includes a control panel 31, an input device (for example, a yarn breakage detector and a rotary encoder provided in the sewing head 4), and an output device. (For example, a driving motor for the spindle of the sewing head 4, a needle switching device, a driving motor for the embroidery frame 9, etc.) are connected via an input / output interface. As shown, a main power switch 32a of the embroidery sewing machine 1, a fuse 32b, an AC outlet 32c, and the like are provided.
[0021]
The power supply circuit of the embroidery sewing machine 1 includes a power supply transformer 38 for stepping down and outputting an input voltage of 200 V in accordance with the power supply voltage (for example, 70 V) of the electrical components of each part of the sewing machine. When the voltage of the power source is higher than 200V (for example, 380V), a high-voltage power transformer 39 corresponding to the voltage of the power source is connected between the power source and the power transformer 38, where the voltage is increased to 200V. Try to step down.
[0022]
These control unit 32, operation unit 35, power supply transformer 38, and high voltage power supply transformer 39 are supported by a frame 40 that is separate from the sewing machine frame 2. This separate frame 40 includes a rectangular base frame 41 that is long in the front-rear direction in plan view, a leg portion 42 with a height adjusting function and a foldable caster 43 attached to each of the four corners, and a front end portion of the base frame 41. And a stand frame 44 as a support portion standing on the right front corner (in this example). The upper end of the stand frame 44 extends to a position higher than the upper surface of the table 3. A concave portion 3b that is omitted in a rectangular shape in plan view is formed in the right front corner portion of the table 3. When the separate frame 40 is disposed close to the right front corner of the table 3 in plan view, the concave portion 3b is formed. The stand frame 44 is positioned just within 3b.
[0023]
In the base frame 41, the control unit 32 is disposed at the front thereof with the front panel facing forward, and the power transformer 38 is disposed at the rear thereof. Further, a high-voltage power transformer 39 is appropriately disposed behind the power transformer 38 as necessary. As a result, the frame 40 supports at least the control unit 32 of the control device 30 so as to be movable relative to the table 3 at a position below the front end of the table 3. The distance from the front edge of the table 3 to the main power switch 32a of the control unit 32 in plan view is 275 mm.
[0024]
A control panel 31 is attached to the upper end portion of the stand frame 44. The rear end portion of the base frame 41 and the sewing machine frame 2 are connected by a flexible bellows-shaped flexible tube 46, and as shown in FIG. A cable 47 that connects electrical components disposed in a separate frame 40 is passed therethrough. The cable 47 passing through the inside of the tube 46 is drawn out on the base frame 41 through a through hole (not shown) provided in the rear wall of the base frame 41 and a through hole 41a provided in the upper wall. The control unit 32, the power transformer 38, and the high voltage power transformer 39 are connected. The cable 47a to the control panel 31 is wired via the inside of the cylindrical stand frame 44. The cable 47 on the base frame 41 is preferably covered with a duct 48 as shown by a two-dot chain line in FIG.
[0025]
This separate frame 40 becomes movable when the foldable caster 43 is set at a use position indicated by a two-dot chain line in FIG. 2, and its installation position can be adjusted as appropriate.
[0026]
According to the embroidery sewing machine 1 of the first embodiment configured as described above, a separate body that supports at least the control unit 32 of the control device 30 so as to be movable relative to the table 3 at a position below the front end of the table 3. When the main power switch 32a provided on the front panel of the control unit 32 is turned on, the fuse 32b is replaced, or the power plug is inserted into the AC outlet 32c, the conventional frame 40 is provided. On the other hand, since it is easy to reach them without having to dive under the table 3, the operability can be greatly improved.
[0027]
Further, the separate frame 40 is configured to further support the power transformer 38 and the high voltage power transformer 39, so the control unit 32, the power transformer 38, and the high voltage power transformer 39 are supported. Can be arranged in a concentrated manner, the wiring of the cables connecting them can be facilitated, and the workability when maintaining them can be improved.
[0028]
The separate frame 40 is provided with a power transformer 38 behind the controller 32 and a high-voltage power transformer 39 behind it, that is, a sewing machine frame. Since these devices 32, 38, 39 are arranged in a row toward the line 2, the efficiency is improved by shortening the cables connecting these devices 32, 38, 39 and the machine frame 2 side as much as possible. Wiring can be performed.
[0029]
Further, since the separate frame 40 includes a stand frame 44 that supports the control panel 31 of the control device 30, the control panel 31 and the control unit 32 that are components of the control device are concentrated on the separate frame 40. It is possible to arrange them, and it is possible to facilitate the wiring of the cables connecting them, and to improve the workability when maintaining them.
[0030]
Next, FIG. 5 shows a sewing machine according to a second embodiment embodying the present invention. The sewing machine of this embodiment is different from that of the first embodiment only in that a separate frame 49 is not provided with a stand frame 44 for supporting the control panel 31. Accordingly, the same parts as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.
[0031]
In the present embodiment, the control panel 31 is disposed on the table 3 as in the conventional example. According to the present embodiment, the same effects as those of the first embodiment can be obtained except for the effects achieved by the stand frame 44 of the first embodiment.
[0032]
In addition, this invention is not limited to the said embodiment, For example, it can also be suitably changed and embodied as follows, for example in the range which does not deviate from the meaning of invention.
(1) The power transformer 38 and the high voltage power transformer 39 are disposed on the sewing machine frame 2.
(2) The arrangement positions of the control unit 32, the power transformer 38, and the high-voltage power transformer 39 on the base frame 41 are appropriately changed.
[0033]
【The invention's effect】
The sewing machine of the present invention has an excellent effect that the operability of the control unit of the control device can be improved.
[Brief description of the drawings]
FIG. 1 is a plan view of a sewing machine according to a first embodiment of the present invention.
FIG. 2 is a side view of the sewing machine.
FIG. 3 is a perspective view showing a separate frame of the sewing machine.
FIG. 4 is a perspective view showing a use state of the frame.
FIG. 5 is a cross-sectional plan view showing a use state of the frame.
FIG. 6 is a perspective view showing a separate frame in the sewing machine according to the second embodiment of the present invention.
FIG. 7 is a plan view of a conventional sewing machine.
FIG. 8 is a side view of the sewing machine.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Embroidery sewing machine 2 Sewing machine frame 3 Table 30 Control apparatus 31 Control panel 32 Control part 35 Operation part 36 Display part 38 Power transformer 39 High voltage power transformer 40 Separate frame 44 Stand frame 49 as support part Separate body flame

Claims (3)

Based on a table supported by the sewing machine frame and having a front and rear width of 2000 mm or more, an operation unit for inputting an operation instruction above the table, and an operation instruction input to the operation unit below the table In a sewing machine comprising a control device including a control unit that controls the operation and has a main power switch,
A frame that is separate from the sewing machine frame, including a rectangular base frame that is long in the front-rear direction and casters attached to the four corners in plan view,
On the base frame, there is at least the control unit of the control device, and a power transformer separate from the control device that outputs the input voltage by stepping down the input voltage according to the power supply voltage of the electrical components of each part of the sewing machine. By being arranged, the control unit and the power transformer are supported so as to be movable relative to the table at a position below the front end or side end of the table ,
The separate frame includes a support portion that supports the operation portion, the upper end of which extends to a position higher than the upper surface of the table, and a concave portion that is omitted in a rectangular shape in plan view is provided at the corner of the table. The sewing machine is formed so that the support portion is positioned in the recess when the separate frame is arranged close to the corner when viewed .   The sewing machine according to claim 1, wherein the separate frame further supports a high-voltage power transformer that is connected between a power source and the power transformer.   In the separate frame, the power transformer is disposed behind the control unit, and the high-voltage power transformer is disposed behind the control unit, so that the control unit is directed toward the sewing machine frame. The sewing machine according to claim 2, wherein the power transformer and the high-voltage power transformer are arranged in a line.

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