JPH0523457A - Device and method for working clamp for automatic sewing machine - Google Patents

Abstract

PURPOSE:To provide the device and the method for working a clamp with high accuracy without using a means for converting sewing pattern data to clamp plate working data. CONSTITUTION:The device is provided with a plate 2 for placing an object to be sewn thereon, a clamp plate 14 for holding the object to be sewn, an outer frame arm 6 being movable in XY directions, clamp plate holding devices 18, 22 connected to the outer frame arm 6, and a clamp plate working implement 8 provided in the lower part of the plate, and at the time of working the clamp plate, the clamp plate is held in a position which is offset by a horizontal direction interval between a sewing machine needle and a working blade against the time of sewing. At the time of perforating, a clamp plate stock receives a thrust in the direction in which it is pressed down on the plate. After the clamp plate is completed, sewing can be executed by holding the clamp plate in a position which is offset by a horizontal direction interval between the sewing machine needle and the working blade against the time of sewing, by the clamp plate holding device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp machining apparatus, and more particularly to a clamp machining apparatus and machining method for holding a workpiece in an XY-controlled automatic sewing machine.

[0002]

2. Description of the Related Art In an automatic sewing machine as described above, the XY position of a clamp is sewn on the basis of sewing pattern data during sewing.
A desired sewing pattern was created by controlling the directional movement. Conventionally, this sewing pattern data is also used when processing a plate-shaped clamp material before processing into a shape that allows proper sewing by hollowing out the inside slightly wider than the sewing pattern. The program is changed to process the sewing pattern data into processing data, and then the clamp material is processed by XY movement control.

Further, as a cutting tool for cutting the clamp material, a perforating drill is attached on the table of the sewing machine, and the clamping material placed on the table is perforated from the top to the bottom of the table. It is known to pierce and cut the blade.

[0004]

The above-mentioned prior art requires a device, a program, a circuit, or the like for converting the sewing pattern data into the clamped data, which makes the program and the circuit more complicated. There is. Also, when drilling the clamp material,
During drilling, the clamp material receives an upward thrust that is opposite to the downward direction of the machining direction from the machining tool. Therefore, when the processing tool is mounted above the sewing machine table (or the needle plate), the thrust pulls the clamp upward, which causes flapping and unstable support.

Therefore, an object of the present invention is to solve the above problems.

[0006]

An apparatus according to claim 1,
A plate 2 on which a material to be sewn is placed, a clamp plate 14 which holds the material to be sewn, an outer frame arm 6 movable in the XY directions,
A clamp plate processing device of an XY-controlled automatic sewing machine, comprising: a clamp plate holding device connected to the outer frame arm 6.
Clamp plate processing tool 8 having a processing blade below the plate
Is provided, and when the clamp plate is processed, the clamp plate is held by the clamp plate holding device at a position offset by the horizontal gap between the sewing machine needle and the processing blade when sewing.

According to a second aspect of the present invention, in the method of processing a clamp plate using the clamp plate processing apparatus for an automatic sewing machine according to the first aspect, the clamp plate material is fixed to the clamp plate holding device, and the clamp plate is fixed. Move the clamp plate holding device until the material reaches the sewing start position of the sewing pattern, perforate the clamp plate material while raising the processing tool, fix the processing tool, and then hold the clamp plate based on the sewing pattern data. By moving the device in XY direction, the clamp plate material is processed to form the clamp plate 14, and the clamp plate holding device holds the clamp plate at a position offset by the horizontal gap between the sewing machine needle and the processing blade during sewing. It is characterized by being able to sew.

[0008]

[Operation] An unprocessed clamp plate material is fixed to the clamp plate holding device, the clamp plate holding device is moved until the clamp plate material reaches the sewing start position of the sewing pattern, and then the clamp plate material is raised while raising the processing tool. Make a hole. Since the processing tool is attached to the lower side of the plate, the thrust force that the clamp material receives from the processing blade of the processing tool during drilling acts in the direction in which it is pressed onto the plate.

After the boring process is completed, the processing tool is fixed, and the clamp plate holding device is moved in the XY direction based on the sewing pattern data to process the clamp plate material to form the clamp plate. After the clamp plate is completed, the clamp plate holding device holds the clamp plate at a position offset by the horizontal gap between the sewing needle and the working blade with respect to the sewing portion, thereby enabling sewing.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 4 are views showing a first embodiment of the present invention. 1 and 2, reference numeral 2 is a sewing machine table (plate), and 4 is a sewing machine main body provided on the sewing machine table 2.

Reference numeral 6 denotes an outer frame arm provided on the sewing machine body 4, which can be moved in the XY directions by a well-known XY drive device (not shown). Reference numeral 8 denotes a processing tool such as a drill, which is attached to the sewing machine table 2 by a processing tool holder 10 below the table 2. The processing tool 8 can be moved up and down by a lever 12 that rotates about a shaft 11 fixed to a frame (not shown). This processing tool 8
The plate-shaped clamp member 14 can be perforated and grooved.

The blade 9 of the processing tool 8 is located at a distance y in the Y direction from the needle drop point of the sewing machine. The table (or needle plate or auxiliary plate) 2 is provided with a hole 16 at a distance y from the needle drop point for inserting the blade 9 of the processing tool. Reference numeral 18 denotes an outer frame for fixing the clamp plate, and as shown in FIGS. 3 and 4, an outer frame support shaft 22 is fixed to the outer frame 18 by, for example, a screw 20. The outer frame support shaft 22 has a protrusion 2
4 is detachably fixed by a recess (not shown) to which the protrusion 24 provided on the outer frame arm 6 can be fitted, whereby the outer frame 1
8 and the outer frame arm 6 are detachably connected.

In the present embodiment, the outer frame 18 and the outer frame support shaft 22 constitute a clamp plate holding device. A screw hole for fixing the outer frame support shaft 22 when processing the clamp member 14 is provided at the first fixing position G1 of the outer frame 18, and a sewing object is sewn at the second fixing position. At this time, a screw hole for fixing the outer frame support shaft 22 is provided, and the interval between the first and second fixing positions is set equal to the distance y between the blade 9 of the processing tool and the needle drop point. There is.

Next, a method of processing a clamp plate using the clamp plate processing apparatus having the above configuration will be described. The raw clamp material 14 is fixed to the outer frame 18 with screws or the like, and the outer frame support shaft 22 is fixed to the first fixing position G1 of the outer frame 18. By connecting the outer frame 18 to the outer frame arm 6, the clamp plate holding devices 18, 22 are connected to the outer frame arm 6.

The clamp plate holding device is moved by the outer frame arm 6 to feed the clamp plate 14 to a position corresponding to the sewing start position of the sewing pattern when sewing the material to be sewn. While turning on the switch of the processing tool and raising the processing tool 8, the unprocessed clamp blank 14 is perforated. Since the processing tool is attached to the lower side of the table, the thrust force that the clamp material receives from the blade 9 during the drilling process acts in the direction in which it is pressed onto the table (or the needle plate or the auxiliary plate), that is, downward, and the clamp material is Stable and improved processing accuracy.

After drilling, the processing tool 8 is fixed, the start switch of the sewing machine is turned on, and the clamp material 14 is grooved by the outer frame arm 6 based on the sewing pattern data.
After finishing the processing of the clamp material 14, turn on the switch of the processing tool 8.
As the FF, the clamp plate holding devices 18 and 22 are removed from the outer frame arm 6 by disconnecting the outer frame support shaft 22 and the outer frame arm 6.

Next, the fixing position of the outer frame supporting shaft 22 and the outer frame 18 is changed to the second fixing position G2, and the outer frame supporting shaft 22 is again provided.
Clamping plate holding device 1 by connecting the to the outer frame arm 6
8 and 22 are connected to the outer frame arm 6. In this way, after processing the clamp plate, the fixed position of the outer frame support shaft 22 and the outer frame 18 is changed to the fixed position during sewing (second fixed position G2),
The sewing can be performed only by connecting the outer frame 18 to the outer frame arm 6. When sewing, the clamp 14 holds the object to be sewn, and the outer frame arm 6 moves the clamp plate 14 in the XY directions to sew the object to be sewn.

In the above method, the clamp material 1
4, after the clamp plate holding devices 18, 22 are removed from the outer frame arm 6, the fixing positions of the outer frame supporting shaft 22 and the outer frame 18 are changed from the first fixing position G1 to the second fixing position G2. In the above description, the case where the outer frame support shaft 22 is connected to the outer frame arm 6 again has been described. However, the frame support shaft 22 and the outer frame 18 remain connected with the clamp plate holding devices 18, 22 to the outer frame arm 6. The fixed positions of and may be changed to the second fixed position G2.

In the above embodiment, the clamp plate 14 is used.
The outer frame 18 for holding the outer frame arm 6 by the outer frame support shaft 22.
Although the example in which the outer frame 18 is not provided is shown, the clamp plate 14 may be directly connected to the outer frame arm 6 by the outer frame support shaft 22. 5 and 6 are views showing a second embodiment of the present invention. In this example, the outer frame support shaft 2 of the first embodiment
The offset correction jig 100 is provided in place of 2, and the support arm 122 is provided in place of the outer frame arm 6 of the first embodiment. The offset correction jig 100 includes a correction plate 102 and a connecting pin 104, and the support arm 122 includes a support arm body 124.
And a fixing tool 126 and a screw 128.

A positioning protrusion (not shown) of the connecting pin is fitted into the positioning hole G1 or G2 of the correction plate 102 and then screwed by a screw 116, and the engaging portion 106 of the connecting pin 104 is fitted to the tip of the support arm. Engage 130 and screw 128
By fixing the fixing tool 126 with, the offset correction jig 100 can be connected at two connection points G1 or G2.

The outer frame 18 has a gripper 108 and a screw 1 on one side.
In FIG. 10, the leaf springs 112, which are fixed to the clamp members on both left and right sides by screws 120, press the projections 114 on the left and right sides of the clamp members 14, thereby fixing the clamp members 14 and correcting the correction by the screws 118. It is fixed to the tool 100. The distance between the first and second connection positions is equal to the distance y between the blade 9 of the processing tool and the needle drop point.

In the present embodiment, the outer frame 18 and the offset correction jig 100 constitute a clamp plate holding device. Next, a method for processing a clamp plate using the clamp plate processing apparatus of this embodiment will be described. The unprocessed clamp material 14 is fixed to the outer frame 18 with screws or the like, and the outer frame 18 is fixed to the offset correction jig 122.

Next, the offset correction jig 100 is fixed to the support arm 122 through the positioning hole G1 which is the first fixing position, whereby the clamp holding devices 18, 100 are fixed to the support arm 12.
Connect to 2. The clamp plate holding device is moved by the support arm 122 to feed the clamp plate material 14 to a position corresponding to the sewing start position of the sewing pattern when sewing the material to be sewn.

While turning on the switch of the processing tool and raising the processing tool 8, the unprocessed clamp blank 14 is perforated. After drilling, the processing tool 8 is fixed, the start switch of the sewing machine is turned on, and the clamp material 14 is grooved according to the sewing pattern. After the processing of the clamp material 14 is completed, the switch of the processing tool 8 is turned off.

Offset correction jig 100 and support arm 122
The fixing position of and is changed from the positioning hole G1 which is the first fixing position to the positioning hole G2 which is the second fixing position. In this way, after processing the clamp plate, sewing can be performed simply by changing the fixed position of the offset correction jig 100 and the support arm 122 to the fixed position at the time of sewing (positioning hole G2 which is the second fixed position). Become. When sewing, clamp 14
The object to be sewn is held by, and the object to be sewn is sewn while the clamp plate 14 is moved in the XY directions by the support arm 122.

In the above, the example in which the material to be sewn is placed on the sewing machine table 2 and the processing tool is provided below the sewing machine table has been described, but the present invention is not limited to this. The material to be sewn may be placed on the needle plate or the auxiliary plate, and the processing tool may be provided below the needle plate or the auxiliary plate.

[0027]

According to the present invention, since the processing tool is attached to the lower side of the table, a thrust force is exerted on the clamp material in the direction of pressing on the table (or the needle plate or the auxiliary plate) during the processing, and the workpiece is processed. Is stable and processing accuracy is improved. Also,
Since the sewing pattern data can be used as it is for processing without processing, there is no need for means for processing data for processing clamp plates.

[Brief description of drawings]

FIG. 1 is a side view of a clamp plate processing apparatus according to an embodiment of the present invention.

2 is a front view of the clamp device shown in FIG. 1. FIG.

FIG. 3 is a perspective view of an outer frame.

FIG. 4 is a side view of FIG.

FIG. 5 is a perspective view of a clamp plate processing apparatus according to an embodiment of the present invention.

6 is a moving arm that supports the clamp plate processing device of FIG. 5;

[Explanation of symbols]

2 ... Plate (needle plate, table, or auxiliary plate) 4 ... Sewing machine 6 ... Outer frame arm 8: Processing tool 10: Processing tool holder 14 ... Raw clamp plate material 18 ... Outer frame 22 ... Outer frame support shaft 100: Correction jig 102 ... Correction plate 104 ... connecting pin 106 ... engaging part 108 ... Grip tool 110 ... screw 112 ... Leaf spring 114 ... Projection 116 ... screw 118 ... screw 120 ... screw 122 ... Support arm 124: Support arm body 126 ... Fixing tool 128 ... screw G1 ... Positioning hole that is the first fixed position G2: Positioning hole that is the second fixed position

Claims (2)

[Claims] 1. An XY control device having a plate on which a material to be sewn is placed, an outer frame arm attached to a sewing machine main body and movable in XY directions, and a clamp connected to the outer frame arm for holding a material to be sewn. In a clamp processing device for an automatic sewing machine, a processing tool is provided below the plate, and the outer frame arm and the clamp are separated from each other in a direction of a blade of the processing tool with respect to a sewing machine needle of the sewing machine main body. Clamping device for an automatic sewing machine, wherein the first and second connecting positions are equal to the distance between the sewing needle and the blade of the processing tool. 2. A method of processing a clamp plate using the clamp plate processing device for an automatic sewing machine according to claim 1, wherein the clamp plate material is fixed to a clamp plate holding device, and the clamp plate material is sewn in a sewing pattern. After moving the clamp plate holding device to the starting position, drilling the clamp plate material while raising the processing tool and fixing the processing tool,
X clamp plate holding device based on the sewing pattern data
Clamp plate 1 by processing the clamp plate material while moving Y
4, the clamp plate holding device is capable of performing sewing by holding the clamp plate at a position offset by a horizontal gap between the sewing needle and the working blade during sewing.