JP3174785B2 - Sewing machine with button - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a sewing machine with a button,
In particular, the present invention relates to a button holding device to which various buttons can be applied.

[0002]

2. Description of the Related Art As a conventional sewing machine with a button, FIG.
The sewing machine shown in FIG. 5 for sewing a flat button BF and the sewing machine for sewing a shank button BS and a marble button BM are known.

FIG. 14 is a diagram showing a button sewing machine currently used. In the figure, MB indicates a sewing machine bed of a sewing machine main body forming a single thread ring seam, and NB indicates a needle plate provided on the sewing machine bed MB. Also, 1
Is a base horizontally moved in two orthogonal directions by an XY drive mechanism (not shown), 2 is a cloth holding plate provided on the base, and the cloth holding plate 2 is located above the needle plate NB. .
Reference numerals 3a and 4a denote a pair of button holding members for holding the flat button BF to be sewn.
The rotating shaft 5 is held by a moving mechanism 6 that rotates together with the rotating shaft 5.
By rotating, the button holding members 3a and 4a together with the moving mechanism 6 rotate to the vertical position or the horizontal position shown in the figure. The moving mechanism 6 is provided with a root winding height setting dial 7. By rotating this, the button holding members 3 a and 4 a advance and retreat with respect to the cloth holding plate 2. For example, when the button holding members 3a and 4a are in the horizontal state, the dial 7
By rotating, the button holding members 3a and 4a can be raised and lowered. The button holding unit U is constituted by the moving mechanism 6 including the dial 7 and the button holding members 3a and 4a.

[0004] Reference numeral 8 denotes an arm 1 provided on the base 1.
The support shaft 8 is rotatably supported by a. A support shaft 8 is provided with a tongue 10 via a holding body 9. The tip of the tongue 10 moves forward and backward with respect to the rising portion 2 a of the cloth holding plate 2 by the rotation of the support shaft 8. Reference numeral 5a denotes a cylinder for rotating the rotating shaft 5, which is connected to the rotating shaft 5 via a connecting member 5b.
By moving the cylinder rod forward and backward, the rotating shaft 5 can be rotated.

In the sewing machine with a button constructed as described above, at the time of sewing, first, the sewing portion of the cloth W is bent along the tongue 10 as shown in FIG.
The button BF is held between the button holding members 3a and 4a, and the button BF is held horizontally above the cloth. Here, when the sewing machine is driven, the cloth holding plate 2 and the button holding members 3a and 4a alternately move in the left-right direction for each stitch, and the sewing needle N alternately falls into a pair of threading holes provided in the button. Then, the cloth W is penetrated, and the button is sewn with the single thread ring stitch.

When the button sewing operation is completed,
As shown in FIG. 17, by driving the cylinder 5a, the button holding members 3a and 4a rotate in the direction of the arrow a to position the button BF vertically on the side of the end of the cloth W. Here, the cloth holding plate 2 and the button holding member 3
The a and 4a move in the left-right direction, drop the sewing needle N on both sides of the previously formed single thread ring stitches Sa and Sb, and perform root winding sewing as shown in FIG.

[0007]

As described above, in a conventional button sewing machine, a flat button BF, a shank button BS, and a marble button BM are sewn using a common sewing machine main body M. It was impossible. SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a button sewing machine that can easily and properly sew any type of button.

[0008]

SUMMARY OF THE INVENTION According to the present invention, a button is clamped so that the button can be moved to a horizontal position or a vertical position laterally above a cloth folded and arranged at a stitch forming portion of a sewing machine. And a moving means for moving the cloth and the button holding means up and down at the time of sewing the button and moving the sewing needle in an XY manner for each needle to form a stitch on the button. In favor of
Root winding height setting means for adjusting the distance between each of the button holding means and the cloth to a root winding sewing height (H) when the button holding means is moved to a horizontal position or a vertical position; While supporting the setting means, when the button holding means is moved to a vertical position, the button holding means is moved in the same direction as the direction of movement of the button holding means by the root height setting means, and To add to the distance (H) between the button holding means and the cloth set by the setting means
Button height setting means that can move and adjust the button height (S), and input the root winding sewing height (H) and button height (S)
Input means for setting the button holding means in a vertical position, and setting the cloth with the button holding hand by the root winding height setting means.
The interval with the step is set to the input root winding sewing height (H).
Together with the button height setting means.
(S), the needle is dropped alternately into the cloth and the threading hole of the button, and the button is sewn. Then, the needle is dropped to the outside of the sewn thread and the shank button for root wrap sewing is performed. cloth and Bo by marble button sewing is carried out for or button clamping means the root wrapping height setting means to move in a horizontal position,
The distance from the tongue-and-pinching means is the entered root-mound sewing height.
(H) and button by button height setting means
Set the height to zero, drop the needle into the threading hole of the button and the cloth at the same time, sew the button, move the button holding means to the vertical position, drop the needle outside the sewn thread, and It is characterized by performing flat button attachment for winding sewing.

[0009]

According to the present invention, the root winding sewing height (H) and the button height (S) of the shank button and the marble button are specially set by providing the root winding sewing height setting means and the button height setting means. can do.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
3 will be described. 1 and 2 are a perspective view and a plan view showing the appearance of this embodiment. In the drawing, reference numeral 11c denotes a base, and an unillustrated X driven by an XY motor, which will be described later, is applied to an unillustrated sewing machine main body forming a single thread ring stitch.
A horizontal movement is performed in two orthogonal directions (X direction and Y direction) by a Y moving mechanism (moving means). 11
Is a moving table attached to one side of the base 11c,
Slots 11a, 11a through which guide screws 12, 12 are inserted
In the X direction (Xa, Xb). Reference numeral 13 denotes a pulse motor for moving the movable base 11 in the X direction, and sets a button height S (FIG. 15) of the shank button BS or the marble button BM. A pinion 14 is fixed to the motor shaft 13a, and the pinion 14 meshes with a rack portion 11b (guide portion) formed on the movable base 11. The button height setting means is constituted by the pulse motor 13, the pinion 14, and the rack 11b.

Reference numeral 15 denotes a rotary shaft rotatably supported at the tip of the movable base 11, reference numeral 16 denotes a button holding unit fixed to the rotary shaft 15, and this unit 16 corresponds to FIG.
As shown in FIG. 2, a button holding mechanism (button holding means) 16A for holding a button, and this button holding mechanism 16A is
A root winding height setting mechanism (root winding height setting means) 16B for moving in the direction.

The root height setting mechanism 16B is configured as shown in FIGS. That is,
Reference numeral 17 denotes a turntable fixed to the turn shaft 15, which is rotated by 90 degrees between the position shown in FIG. 1 and the position shown in FIG. Guide members 18 are provided on both sides of the turntable 17 as shown in FIG.
a and 18b are fixed.
The frame-shaped slide member 19 can move along a and 18b. A motor shaft 20a of a pulse motor 20 for setting the height H (FIG. 15) of root winding of the flat button BF, the shank button BS, and the marble button BM is fitted into the rotary table 17. A cam 21 fitted into the slide member 19 is fixed to the motor shaft 20a. The slide member 19 is urged by a spring 22 so that a fixed portion of the inner surface thereof is constantly pressed against the outer peripheral surface of the cam 21. For this reason, when the cam 21 is rotated by rotating the pulse motor 20, the slide member 19 can be moved along the guide members 18a and 18b.
The relative position with respect to the turntable 17 can be changed linearly.

Further, the button holding mechanism 16A is shown in FIG.
And a configuration as shown in FIG. In the figure,
Reference numeral 25 denotes a mounting plate. The mounting plate 25 is formed with grooves 25a and 25b extending in directions intersecting with each other. Buttons 26A and 26B are movable in the grooves 25a and 25b. Mated. A rack 26 is provided on the opposing surface of each of the button holding members 26A and 26B.
A1 and 26B1 are formed respectively, and gears 27 rotatably mounted on the mounting table 25 are provided on the racks.
Are engaged. For this reason, both button holding members 26A,
The button holding portions 26a and 26b of the button 26B move symmetrically in a direction in which the button holding portions 26a and 26b move toward and away from each other. The one button holding member 26A is constantly urged in the d direction by a spring 28, and the urging force holds the button between the button holding portions 26A and 26B.

The button holding mechanism 16 constructed as described above
A is a screw 27 with respect to the root height setting mechanism 16B.
A detachable portion is formed by the button holding member 26, and an appropriate button holding member 26 is appropriately selected according to the type of the button to be held.
A and 26B can be exchanged. In this embodiment, a button having button holding members 26A and 26B in which button holding grooves ma2 and mb2 are formed as shown in FIG.
And the one having button holding grooves ma2, mb2 as shown in FIG. 8 for the marble button BM, and the one corresponding to the button to be applied is mounted on the root height setting mechanism 16B and used. It is supposed to.

The button holding unit 16 described above is
By rotating the rotation shaft 15 via the connecting member 29 by the cylinder 30, the whole is rotated by 90 degrees. By the rotation, the button holding members 26A and 26B are located above and to the side of the cloth holding plate 31, and the buttons are selectively located at the horizontal position and the vertical position. These cylinder 30 and rotating shaft 15
Forms a rotating means.

On the other hand, in FIGS. 1 and 3, reference numeral 32 denotes a rotating shaft rotatably supported by an arm 11d formed on the base 11c. Reference numeral 33 denotes a tongue attached to the rotation shaft 32 via an attachment member 34.
2 is rotated so that the tip portion 33a
It is designed to advance and retreat for one. The tip portion 33a of the tongue has a sharpened shape, and the button sewing portion of the cloth is bent along the tip portion so that the cloth is held between the cloth holding plate 31 and the button. The cloth holding plate 31 is held by the base 11c and is located on the needle plate NB of the sewing machine.

Reference numeral 35 denotes a pulse motor for rotating the rotary shaft 32. A pinion 36 is fixed to a motor shaft 35 a of the pulse motor 35, and a rack 37 meshes with the pinion 36. A link 38 is pivotally attached to an end of the rack 37, and the link 38 is fixed to the rotation shaft 32. Thus, the rotation of the pulse motor 35 is transmitted to the link 38 via the pinion 36 and the rack 37, and rotates the rotation shaft 32.

FIG. 9 is a block diagram showing the conceptual structure of the main mechanisms in this embodiment and control means for controlling them. In FIG. 9, reference numeral 40 denotes a CPU 41, a ROM 42 and a RAM.
A well-known microcomputer as control means comprising 43. CPU 4 of this microcomputer 40
1, a sewing machine motor MM for executing a stitch forming operation;
In addition to an X pulse motor XM and a Y pulse motor YM for operating an XY drive mechanism (not shown), the cylinder 30 and the pulse motors 13, 20, and 35 are connected. These are controlled by a control signal sent from the CPU 41. It is driven appropriately. Reference numeral 44 denotes an input device for inputting various setting data and commands.
It is connected to PU41.

Next, the operation based on the above configuration will be described. When sewing the shank button BS, first,
The button holding mechanism 16A including the button holding members 26A and 26B having the button holding grooves ma2 and mb2 as shown in FIG. 8 is mounted on the root winding height setting mechanism 16B, and then data relating to button attachment, for example, FIG. The input device 44 inputs the root wrap height H, the button height S, the sewing needle N, the rake amount of the cloth (the distance from the cloth edge to the needle drop position) T, which is the distance between the button and the cloth W shown in FIGS. To enter. At this time, the button holding members 26A and 26B are positioned on the cloth holding plate because the cylinder is in the inoperative state, and the buttons are held horizontally (see FIG. 10).

Here, the shank button BS is inserted and held in the button holding members 26A and 26B, and the cloth W is held by the tongue 33 and the cloth holding plate 31.

Next, the operator operates the switch of the input device 44 to operate the cylinder 30 and rotates the button holding members 26a and 26b about the rotation shaft 15 by 90 degrees to thereby move the cloth W at the end side. (See FIG. 11). Further, the operator operates the switch of the input device 44 to drive the pulse motor 13 to set the button height S, and lowers the button holding members 26A and 26B toward the cloth holding plate 31. Then, as shown in FIG.
S with the lower surface in contact with the cloth,
a, 26b are stopped.

Thereafter, when a cloth and button setting operation command is input by the input device 44, the CPU 41 operates the pulse motor 20 by the previously input root winding height H to hold the button holding members 26A, 26B. It is moved in a direction (side) away from the plate 31. Thereby, the interval between the shank button BS and the cloth W, that is, the root height H
Is set to a preset value.

When a sewing operation command is input by the input device 44, the sewing machine motor MM is operated to start the raising and lowering operation of the sewing needle N, and at the same time, the X pulse motor XM is operated and the base is moved by the XY drive mechanism. The needle 10 is reciprocated in the X direction for each stitch, and the sewing needle N is alternately dropped into the cloth and the threading hole BSa of the button BS, and the shank button BS is sewn by a single thread ring stitch.

When the button sewing operation is completed, the CPU 41
Drives the Y pulse motor YM together with the sewing machine motor MM, moves the base 10 in the Y direction for each stitch, and moves the sewing needle N to both outer sides of the stitches Sa and Sb formed by the previous sewing operation. And apply root wrap sewing.

Although the sewing operation of the shank button BS has been described above, the button holding members 26A, 2 having the button holding grooves ma2, mb2 are also used for sewing the marble button BM.
The same operation may be performed using 6B.

Next, the sewing operation of the flat button BF will be described. When the sewing operation of the flat button BF is performed after the sewing operation of the shank button BS, first, the button holding mechanism for the shank button mounted on the button holding unit 16 is removed, and the button holding groove ma1, While the button holding mechanism 16A dedicated to the flat button having mb1 is attached, the height H of the wrapping is input by the input device 44.

Next, as shown in FIG. 2, flat buttons are mounted on the button holding members 26A and 26B which are in a horizontal state, and the cloth is held by the tongue 33 and the cloth holding plate 31.

Here, the switch of the input device 44 is operated to operate the pulse motor 20 and the button holding member 26
A, 26B is lowered to bring the button into contact with the cloth. Thereafter, the pulse motor 13 is driven by the CPU 41,
The button holding members 26A and 26B rise by the preset root height H. Thereby, the flat button BS and the cloth W
Is set to the root height H (FIG. 16).

Here, when a sewing operation command is input, the CP
The sewing needle N starts up and down operation by U41,
The button holding unit 16 reciprocates with the base 11c for each stitch by the Y pulse motor YM. As a result, the sewing needle N alternately falls into the pair of threading holes of the flat button BF and is sewn to the cloth.

After the sewing operation of the buttons, the cylinder 30 is operated by the CPU 41, the button holding unit 16 is rotated by 90 degrees by the rotation of the rotating shaft 15, and the button B is in a vertical state (FIG. 1). Then, the sewing machine motor MM starts operating again, and the pulse motor 20 starts operating again. The button holding members 26A, 26B move in the XY directions for each stitch, and the outer sides of the stitches Sa, Sb of the button B. The sewing needle is lowered to perform root wrap sewing.

As described above, in this embodiment, the height of the root wrap is set not only by the button holding unit 16 but also by moving the movable base 11 with respect to the base 10. Can be prevented from becoming large.

In the above-described embodiment, the pulse motors 13 and 20 are used, and the button height S and the root winding height H are automatically set by a switch operation on the input device 44.
Can be set, but the pulse motors 13 and 2
It is also possible to provide a manual dial in place of 0 and to set the height of the root winding by operating the dial. In this case, the operability is greatly improved as compared with the conventional case. That is, when setting the height of the root winding using a manual dial, first, the button height S is set for a shank button or a marble button, and the button height is set to 0 for a flat button. Next, the scale value of the dial provided on the button holding unit is set to "0", and the button is brought into contact with the cloth by the moving table moving dial. After that, the dial for setting the width of the root wrap may be operated to set the scale of the dial to the height H of the root wrap.

Therefore, as in the case of setting the height of the root wrap using only the dial for setting the width of the root wrap, the scale is read while the button and the cloth are in contact with each other, and the scale is required. There is no need to perform a troublesome operation such as adding the height of the root winding, and the setting operation can be simplified.

[0034]

As described above, the provision of the root wrap sewing height setting means and the button height setting means enables the button so that the shank button, the marble button and the flat button can be sandwiched and the root wrap sewing can be performed. For the button holding means for holding the button, the root winding sewing height (H) and the button height (S) of the shank button and the marble button are separately set, and the root winding sewing height (H) for each of the buttons is set. Can be easily changed.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part according to an embodiment of the present invention.

FIG. 2 is an enlarged plan view of what is shown in FIG.

FIG. 3 is a perspective view showing a tongue moving mechanism in the embodiment.

FIG. 4 is a front view showing a button holding mechanism in the embodiment.

FIG. 5 is a side view of the one shown in FIG.

FIG. 6 is an exploded perspective view showing the button holding unit in the embodiment.

FIG. 7 is a front view showing a button holding member for a flat button in the embodiment.

FIG. 8 is a front view showing a button holding member for a shank button and a marble button in the embodiment.

FIG. 9 is a block diagram showing a conceptual configuration of a main mechanism and a configuration of a control system circuit in the embodiment.

FIG. 10 is an explanatory diagram showing an initial state of the button holding member when setting the height of the root winding of the shank button in the embodiment.

FIG. 11 shows a state in which the button holding member is moved from the state shown in FIG.
It is explanatory drawing which shows the state rotated by 0 degree.

FIG. 12 is an explanatory diagram showing a state where the button is brought into contact with the cloth from the state shown in FIG. 11;

FIG. 13 is an explanatory diagram showing a state in which the button is set at the height of the wrap around the state shown in FIG. 12;

FIG. 14 is a perspective view showing a peripheral mechanism of a button holding member in a conventional button attaching sewing machine.

FIG. 15 is an explanatory front view showing the position of the button holding member when various buttons in FIG. 14 are set to a fixed root height.

FIG. 16 is an explanatory front view showing a state of a button holding member when sewing a flat button in the one shown in FIG. 14;

FIG. 17 is an explanatory front view showing a state of a button holding member when root wrap sewing is performed on a flat button in the one shown in FIG. 14;

FIG. 18 is a side view showing the sewing state of the flat button.

[Explanation of symbols]

 Reference Signs List 13 pulse motor 15 rotation shaft 29 connecting member 30 cylinder 16 holding unit 16A button holding mechanism 16B moving mechanism 33 tongue 33a tip end of tongue Sa, Sb sewing thread W cloth N sewing needle

Claims (1)

(57) [Claims] 1. Button holding means for holding a button and being movable to an upper horizontal position or a vertical position on a side with respect to a cloth bent and arranged at a stitch forming portion of a sewing machine; And a moving means for forming a stitch on the button by moving the button holding means up and down with respect to the sewing needle moving XY for each stitch, and supporting the button holding means. A root winding height setting means capable of adjusting the distance between the button holding means and the cloth to a root winding sewing height (H) when moved to a horizontal position or a vertical position; and the root winding height setting means. While supporting and moving the button holding means to the vertical position, the button holding means is moved in the same direction as the movement of the button holding means by the root height setting means, and Added to the distance between the button clamping means and the cloth was set Te (H)
Button height setting means capable of moving and adjusting the button height (S), and inputting a root winding sewing height (H) and a button height (S).
And a power unit, the height setting winding the roots by the button pinching means in the vertical position
The distance between the cloth and the button holding means by the setting means.
And height of the button as well as the set root height (H)
The means is moved to the input button height (S), the needle is alternately dropped into the cloth and the threading hole of the button, the button is sewn, and then the needle is dropped outside the sewn thread. With the shank button or marble button to sew the root wrap , or by moving the button holding means to the horizontal position,
The distance between the cloth and the button holding means is input by the setting means.
Sewing height (H) and button height setting
After setting the button height to zero and dropping the needle into the threading hole of the button and the cloth at the same time to sew the button, move the button holding means to the vertical position and place the needle on the outside of this sewn thread. A button-attached sewing machine that selectively performs flat button attachment for dropping and root winding.