JPH0577140A - Machining device for clamp of automatic sewing machine by sewing program - Google Patents

Abstract

PURPOSE:To provide a machining device for a clamp of an automatic sewing machine by sewing pattern data. CONSTITUTION:Clamp material is fixed to an X-Y moving outer frame 18 so as to machine the clamp material 14 while performing the X-Y movement of a clamp holding means on the basis of sewing pattern data. At this time, X-Y drive control mechanism (clamp material holding means 1) is stopped to stand by in the start position of specific data included in the sewing pattern data, and simultaneously, processing in the case of 'no-load sewing data' is performed at the appropriate moving speed respectively on the basis of 'cutting' or 'non-cutting' set-inputted previously.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for manufacturing a clamp to be attached to an automatic sewing machine, and more particularly, to a clamp processing apparatus using an automatic sewing machine equipped with an XY drive control mechanism for an automatic sewing machine using a sewing program. The present invention relates to a clamp processing device.

[0002]

2. Description of the Related Art Conventionally, in an automatic sewing machine, a clamp supporting a material to be sewn at the time of sewing is controlled to move in the XY directions based on the sewing pattern data, so that the material to be sewn can be moved along the sewing pattern. I am sewing. And
When an unprocessed plate-shaped clamp material fixed to the XY drive control base is cut by a drill that moves forward and backward in a direction traversing the clamp material, the clamp pattern used in the automatic sewing machine is similar to the above sewing pattern data. In order to hollow out the seam allowance, the cutting control is performed after the program of the sewing pattern data is changed in advance and processed into the data for clamp processing, as described below.

The conventional clamp processing device for an automatic sewing machine will be described in detail. The clamp processing device is a plate (sewing table) on which a material to be sewn is placed, and an external device which is attached to a sewing machine main body and is movable in XY directions. In a structure having a frame arm and an outer frame provided at a tip of the outer frame arm, and a clamp that is fixedly connected to the outer frame arm and holds a workpiece, a drill or the like is provided below the plate and separated from the sewing machine. Providing processing tools,
The clamp held on the outer frame can be connected to the sewing machine needle of the sewing machine body at first and second connection positions respectively corresponding to the position of the processing tool, and the first and second connection positions are the above-mentioned. It is configured by equalizing the distance between the sewing machine needle and the blade of the processing tool.

During clamp processing, the clamp blank plate is fixed to the outer frame, the clamp blank plate is moved until the clamp blank plate reaches the sewing start position of the sewing pattern, and the clamp blank plate is punched while raising the working tool. Then, after fixing the processing tool at the upper position, the clamp blank plate is processed while the clamp is moved in the XY direction based on the sewing pattern data to form the clamp hole through which the sewing machine needle is inserted. At the time of sewing, the sewing state is brought about by changing the connection of the clamp from the first position to the second position and holding it at a position offset only in the horizontal direction between the sewing machine needle and the processing tool.

[0005]

Therefore, the clamp X
With the Y control, the clamp can be cut by a program of sewing pattern data, but in the cutting of the clamp, for example, "empty stitching" included in the sewing data is performed.
In the part of, whether to cut or not to cut the part depends on the sewing pattern data. Especially, in the case of "basting stitch", after 2 or 3 stitches are sewn, it is empty without thread cutting. The stitches are formed by sewing a few stitches after moving the clamp by a considerable amount, and when forming a clamp for such a sewn product, the portion corresponding to the crossover thread in the "empty stitch" section must be cut. It is more efficient to move the clamp at the cutting speed for further cutting, and to move at a higher speed than during cutting for non-cutting.

The present invention has been made in view of the above problems, and uses sewing pattern data of a sewing machine that is pressed and sewn by the clamp for machining control of the clamp, and uses the "empty sewing data" of the sewing pattern data. for,
It is an object of the present invention to provide a clamp machining device for an automatic sewing machine that uses a sewing program that allows proper selection of cutting or non-cutting of the clamp.

[0007]

A machining device for a clamp for an automatic sewing machine according to a sewing program according to the present invention includes an outer frame arm movable in XY directions by an XY control drive mechanism, and a table connected to the outer frame arm. For an automatic sewing machine that includes a clamp that moves up and a processing tool that is arranged opposite to the clamp and that can move back and forth toward the clamp, and that punches the clamp while moving the clamp in XY based on sewing pattern data. In the clamp machining device, a means for discriminating between "sewing data" and "empty sewing data" of the sewing pattern data, a switch for selecting "cutting" or "non-cutting" of empty sewing data, and the selection switch are When the "non-cutting" is selected, the control means for moving the XY control drive mechanism at a higher speed than when the "cutting" is selected is provided. Is shall.

[0008]

According to the above-described clamp machining device, with respect to the processing of the "empty stitch data", "machining" or "non-machining" of the blank stitching data portion previously input by turning on the blank stitching switch is performed. According to the selection, the processing tool and the XY control drive mechanism are controlled and driven by low speed movement or high speed movement, and the desired clamp is cut.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A processing device for a clamp for an automatic sewing machine according to a sewing program according to the present invention will be described below with reference to the drawings. 1 to 4 show an embodiment of a clamp processing device for an automatic sewing machine embodying the present invention. Reference numeral 2 is a sewing machine table, and reference numeral 4 is a sewing machine main body provided on the sewing machine table 2. An outer frame arm 6 is provided on the sewing machine body 4 and can be displaced in the XY directions by a known XY drive device (not shown).

Reference numeral 8 is a processing tool such as a drill for drilling a plate-shaped clamp material 14, which is attached to the sewing machine table 2 by a processing tool holder 10 below the sewing machine table 2 and at the same time. 8 can be moved up and down by a lever 12 which rotates around a shaft 11 fixed to a frame (not shown). The blade 9 of the processing tool 8 is arranged at a distance y from the needle drop point of the sewing machine in the Y direction, and the sewing machine table 2 is provided with a hole 16 through which the blade 9 of the processing tool is inserted.

Reference numeral 18 is an outer frame for fixing the clamp member 14 in a replaceable manner in accordance with a change in sewing. As shown in FIGS. 3 and 4, the outer frame 18 is clamped by a screw 20 to the clamp member 14. Are fixed, and the clamp holding means 1 is constituted by both members. Reference numeral 22 denotes an outer frame support plate projecting from the outer frame 18, and projecting portions 24 are provided. The outer frame support plate 22 and the projecting portions 24 are arranged at four positions on the outer frame 18, and G1 and G2 are provided. , And each of them is detachably fixed to a recess (not shown) provided at the tip of the outer frame arm 6, whereby the outer frame 18 and the outer frame arm 6 are detachably connected.

At the first fixed position G1 of the outer frame 18,
The outer frame arm 6 is fixed when the clamp member 14 is processed, and the outer frame arm 6 is fixed at the second fixing position G2 when sewing a sewing object. The distance between the two fixed positions G1 and G2 is equal to the distance y between the blade 9 of the processing tool and the needle drop point.

Next, the operation of processing a clamp for an automatic sewing machine using the clamp processing device having the above-mentioned structure will be described.

Unclamped clamp material 14 with screws 20
Is fixed to the outer frame 18, and the outer frame arm 6 is fixed to the first fixing position G1 of the outer frame 18 to connect the clamp holding device 1 to the outer frame arm 6.

When the switch of the processing tool is turned "ON" and the start switch of the sewing machine equipped with the XY drive device is turned "ON", the XY drive device holds the clamp via the outer frame arm 6 based on the sewing pattern data. Means 1 XY
The clamp material 14 is moved to a position corresponding to the sewing start position of the sewing pattern when sewing the material to be sewn, and the cutting process is started from that position by the control drive including the "stop control method" of the present invention described later. To do.

After the processing of the clamp 14 is completed, in order to enable the sewing, the switch of the processing tool 8 is turned "OFF" to disconnect the projection 24 and the outer frame arm 6 from the clamp holding means 1. The clamp holding means 1 is detached from the frame arm 6, the fixing position with the outer frame 18 is changed to the second fixing position G2, and the projection 24 and the outer frame arm 6 are connected again to move the clamp holding means 1 to the outer frame arm 6. Link.

After processing the clamp 14 as described above,
The fixed position G1 of the outer frame 18 is changed to the fixed position G2 at the time of sewing, and the outer frame 18 can be sewn only by connecting the outer frame 18 to the outer frame arm 6. When sewing, the clamp 14 is used to sew a workpiece. And the clamp 14 is controlled and moved in the XY directions by the outer frame arm 6 to sew the object to be sewn.

In the above description of the structure, the clamp machine is integrated with the sewing machine, but it may be a separate machine.

FIG. 5 shows an embodiment of a control device for driving and controlling the XY driving device, which has a command calling unit 31, and a control unit 32 for discriminating a command and stopping the movement of the outer frame arm 6. A rewritable RAM in which basic sewing pattern data is stored and a ROM in which this system program is stored are connected to the control device CPU, and the X motor 3 of the XY drive device is connected via an I / O device.
3 and the Y motor 34 are connected. Further, reference numeral 30 is provided with an idle feed switch 35, a clamp lowering switch 36, a start switch 39, a cutting mode selection switch 40 for selecting "cutting" or "non-cutting" for empty sewing data, and a processing mode selection switch 41. An input board 37 is composed of a light emitting / receiving element provided on the processing tool holder 10 and a reflection plate (not shown) provided on the side surface of the processing tool 8. The blade 9 of the processing tool 8 projects from the hole 16. Clamp material 1
4 is in a position where drilling can be performed, or clamp material 1
4 is a blade position sensor that detects whether or not it is in a retracted position separated from 4. Then, each status display is displayed on the display panel 38.

A program for processing a clamp for an automatic sewing machine by a sewing program including the "stop control method" of the present invention will be described below with reference to the flow charts shown in FIGS. (1) Power supply "ON" (2) Judgment of cutting mode Since the sewing pattern data is shared, "clamping" or "normal sewing" is set depending on the position of the processing mode selection switch 41. (3) Setting of cutting speed The relative movement speed of the blade 9 of the processing tool 8 is set. (4) Preparation key “ON” After searching the origin of the device, the feed is controlled to a predetermined initial position or sewing start position. (5) Display of the next data It is judged from the sewing pattern data whether "sewing data" or "empty sewing data" is displayed on the display panel 38 so that the operator can recognize it. (Voice notification can be made instead of the display panel 38.) (6) Clamp lowering The clamp lowering switch 36 is input to the "lowering" side to lower the clamp material 14 onto the sewing machine table 2. (7) Recognizing the next data Judging whether the code read from the sewing pattern data is "sewing data" or "empty sewing data", if the code is the sewing data, the operator adds the code to punch the clamp material 14. The tool 8 is moved up and forward to move to (8), and in the case of empty stitch data, it is normally moved down and moved back to (12). (8) Start switch “ON” Here, by turning on the start switch 39, the XY drive device is controlled to feed at the set cutting speed to the end of the sewing data, and the clamp material 14 is moved by the blade 9 of the processing tool 8. While cutting, it stops at the end of sewing data. It should be noted that even if the start switch 39 is erroneously operated and the idle feed switch 35, which will be described later, is turned "ON", no operation is performed. (9) Display of next data For the next process, it is judged from the sewing pattern data whether it is "sewing data" or "empty sewing data" and displayed on the display panel 38 so that the operator can recognize it. (10) Recognizing the end of the sewing pattern When one machining process is completed, an end command is searched for whether or not all the processes of the sewing pattern have been completed, and if all processes are completed, the process moves to (11). If there are remaining steps, the process proceeds to (7). (11) Jump feed switch “ON” When the jump feed switch 35 is input, it is determined whether the blade 9 of the processing tool 8 is descending from the clamp material 14, and if it is elevated, an error is displayed and if it is descended. After the feed is controlled to the initial position or the sewing start position, the clamp is raised, and the process returns to (5). (12) Jump feed switch “ON” Check the blank sewing data display and input the jump feed switch 35. At this time, the start switch 39 is mistakenly turned "ON".
It doesn't work at all. (13) Whether or not to cut the empty stitching data section Whether the empty stitching data section of the sewing pattern data is "cut" or "non-cutting" is judged by the cutting mode selection switch 41. It becomes a state. Further, in the case of "non-cutting", it is determined whether the blade 9 of the processing tool 8 is descending, and if it is rising, an error is displayed. The feed control is performed at a higher speed than the cutting feed by "," and the process moves to (9).

The section E in the above flow chart shows the error processing control. In both error processing control sections, the blade 9 of the processing tool 8 faces the clamp member 14 when the XY drive device is to be moved. And is moving forward, and is detected by a processing blade position sensor 37 which is composed of a light emitting / receiving element fixed to the processing tool holder 10 and a reflection plate fixed to the side surface of the processing tool 8. And the movement of the clamp member 14 is stopped until the blade 9 retracts. Therefore, by operating the lever 12 and moving the processing tool 8 downward and backward, the "error display" is eliminated,
Return to normal operation.

Further, FIG. 10 shows an example of the clamp 14 processed by the above method, and FIG. 11 shows an example of data used for the processing. The symbols a, b, h in both figures correspond to each other, the position b indicates the start of sewing of the first sewing data, and the next sewing pattern data according to the present invention is read at the positions c, d, e ... At the same time, the command is "sewing data" (80E1) or "empty sewing data"
At the same time as searching for (807E), "automatic determination" of "processed" or "non-processed" of the empty stitching data is performed. The command 80FD is an end code and is processed as empty sewing data from the end of sewing to the start of sewing.

That is, when the pattern data used for sewing is used as it is for machining the clamp, the feed is stopped at the start position of the "sewing data" and the "empty sewing data" contained in the pattern data, and the next data The type is displayed or announced, and the processing of "empty stitching data" is pre-input for "cutting" or "non-cutting". Therefore, the clamp material 14 can be processed regardless of the sewing data. It can be done automatically.

[0024]

As described above, according to the machining device for the automatic sewing machine clamp according to the sewing program of the present invention, the "sewing data" and the "empty sewing data" of the sewing pattern data are discriminated at each start point. In the empty stitching data section, the clamp moving speed can be automatically processed properly by "machining" or "non-machining" of the part that is input in advance, and the pattern data can be used as it is for machining the clamp. Therefore, it has a feature that a desired clamp can be cut, and the effect after the present invention is carried out is extremely large.

[Brief description of drawings]

FIG. 1 is a side view showing an example of a clamp processing device embodying the present invention.

FIG. 2 is a front view of FIG.

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

FIG. 4 is a side view of FIG.

FIG. 5 is a block diagram showing an embodiment of a control device for driving and controlling an XY drive device.

FIG. 6 is a first flowchart showing a control method by the control device of FIG.

7 is a second flowchart showing a control method by the control device of FIG.

8 is a third flowchart showing a control method by the control device of FIG.

9 is a fourth flowchart showing a control method by the control device of FIG.

FIG. 10 is a plan view showing an example of a clamp.

11 is an example of sewing pattern data used for the clamp processing of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Clamp holding means 2 Sewing machine table 4 Sewing machine 6 Outer frame arm 8 Processing tool 9 Blade 14 Clamping material 18 Outer frame 22 Outer frame support plate 31 Command calling unit 33 X motor 34 Y motor 30 Input board CPU Central control unit

Claims (1)

[Claims] 1. An outer frame arm that is movable in the XY directions by an XY control drive mechanism, a clamp that is connected to the outer frame arm and moves on a table, and is arranged so as to face the clamp and is capable of moving forward and backward toward the clamp. In the processing device of the clamp for an automatic sewing machine, which includes the processing tool described above, for punching the clamp while XY moving the clamp based on the sewing pattern data, the "sewing data" and the "empty sewing data" of the sewing pattern data are provided. And a switch for selecting "cutting" or "non-cutting" of empty stitching data, and when the above-mentioned selection switch has selected "non-cutting", when "cutting" is selected An apparatus for processing a clamp for an automatic sewing machine according to a sewing program, characterized by comprising control means for moving an XY control drive mechanism at a higher speed.