JP2891010B2 - Feeder control device for electronically controlled pattern sewing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a presser foot control device for an electronically controlled pattern stitch sewing machine, and more particularly to a presser foot control during a movement of a sewing pattern from a sewing end position to a next sewing pattern start point position. It concerns the device.

[0002]

2. Description of the Related Art Conventionally, when a work cloth is held or taken out by an electronically controlled pattern sewing machine, a control is performed such that a work presser moves up and down only at a starting point of a sewing pattern to hold or take out the work cloth.

[0003]

However, when the starting point of the sewing pattern and the sewing end position are not close to each other, the operator is required to wait until the movement of the work clamp from the sewing end position to the start point is completed. There was a problem that a waiting time was generated and the work efficiency deteriorated.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem. The cloth presser is raised at the sewing end position of the sewing pattern, and the cloth from the sewing end position to the start point of the next sewing pattern is sewn. An object of the present invention is to improve work efficiency by allowing a work cloth to be taken out when the presser is moved.

[0005]

SUMMARY OF THE INVENTION To achieve this object, an electronically controlled sewing machine control device for a pattern stitch sewing machine according to the present invention comprises a cloth movable across a vertical movement path of a needle on a work cloth supporting surface. In the electronically controlled pattern sewing machine, the work clamp is moved and sewn in accordance with sewing pattern data in which a starting point position and a sewing end position stored in advance in a storage means are different from each other. At the end of sewing according to the pattern data, a lifting control means for raising the work clamp from above the work cloth support surface is provided,
Thereby, the work cloth can be taken out during the movement from the sewing end position to the start point of the next sewing pattern.

[0006]

In the presser foot control device of the electronically controlled pattern stitch sewing machine of the present invention having the above-mentioned structure, the presser foot rises at the end of the sewing of the sewing pattern, thereby performing the next sewing from the sewing end position. The work cloth can be taken out during the movement to the starting point of the pattern.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. The present embodiment is an example in which the present invention is applied to a general industrial electronic control type pattern stitch sewing machine (hereinafter, referred to as a sewing machine).

As shown in FIG. 1, a main body 4 having a bed 2 and an arm 3 is provided on a sewing machine table 1 of a sewing machine M.
Is provided. A needle plate 5 constituting a work cloth support surface is provided at the front end of the bed portion 2, and the needle plate 5 is independently moved and driven in two directions of X-axis and Y-axis orthogonal to each other to control the position. A cloth presser 7 is provided.

The cloth presser device 7 is moved in the X-axis direction by an X-axis direction driving stepping motor 21 which receives a command from the sewing machine controller 8, and is moved in the Y-axis direction by a Y-axis direction moving stepping motor 22. Driven (Fig. 2,
3). The sewing machine control device 8 includes a cloth presser device 7.
Presser switch 6 for instructing the lifting and lowering of the work clamp plate to be described later.
And a start switch 9 for instructing the start of the sewing operation is connected.

[0010] As shown in FIG.
A feed plate 10 moved on the needle plate 5, a presser arm 11 provided on the feed plate 10, and a cloth presser plate as a cloth presser provided at the front end of the presser arm 11 so as to be able to move up and down. 12 and so on. The presser foot plate 12
The pressing solenoid 13 is always raised above the feed plate 10 by a spring (not shown), and is attached to the arm 3.
Is lowered onto the feed plate 10 against the spring pressure.

Then, the needle bar 15 of the sewing machine M is held in a state where the work cloth 14 is held between the work holding plate 12 and the feed plate 10.
And the sewing needle 16 at the lower end thereof is reciprocated up and down while controlling the positions of the cloth presser 7 in two directions of the X-axis and the Y-axis to automatically perform sewing along the sewing pattern on the work cloth 14. Is to be performed.

Next, the sewing machine control device 8 is configured as shown in the block diagram of FIG.

A sewing machine motor 20 and a step motor 21;
Reference numeral 22 is connected to an input / output interface 26 via drive circuits 23, 24, and 25, respectively. The presser solenoid 13 is also connected to the input / output interface 26 via the drive circuit 27. Further, the presser switch 6 and the start switch 9, which are input switches, are also connected to the input / output interface 26, respectively.

The input / output interface 26 includes a bus 28
Are also connected to the CPU 29, the ROM 30, and the RAM 31 via the. The ROM 30 is a read-only storage unit, and stores a program for controlling the operation of the entire sewing machine and a plurality of sewing pattern data having different start point positions S and sewing end positions E points. Also, RAM 31
Is a readable and writable storage means.

Hereinafter, the operation of the sewing machine M thus configured at the sewing end position will be described with reference to the flowchart of FIG.

First, when the power is turned on, the CPU 29, R
Initial setting of the OM 30 and the RAM 31 is performed, and desired sewing pattern data is stored in the RAM 31 from the ROM 30.
(S1). Subsequently, when the presser switch 6 is turned on, if the presser foot plate 12 is lowered, it is raised, and if it is raised, it is lowered, and the work cloth 14 is held at a predetermined position of the presser foot device 7. (S2, S3).

When the start switch 9 is turned on with the cloth presser plate 12 of the cloth presser device 7 lowered, the sewing process is started (S4, S5). In the sewing process S6, the sewing machine motor 20 is driven, and the cloth presser device 7 is moved in the X and Y directions in accordance with the sewing pattern data in the RAM 31, so that the stitch 40 moves from the start point S to the sewing end E. A point is formed (see FIGS. 4 and 5). When the stitch 40 is formed up to the sewing end position E, the urging of the presser solenoid 13 is released, and the cloth presser plate 12 is raised by a spring (S7, S8). In a state where the cloth presser plate 12 of the cloth presser 7 is kept raised, the cloth presser frame 7 moves from the sewing end position E to the start point S shown in FIG. The process shifts to waiting for the holding process to the presser device (S9).

Therefore, according to the cloth presser control device of the electronically controlled pattern stitch sewing machine of the present invention, when the work presser 7 is moved from the sewing end position E to the start position S in step S9, the work cloth 14 is moved. Since the work cloth 14 can be quickly taken out, there is no need to wait for the movement from the sewing end position E to the start point S to take out the work cloth 14, so that the work efficiency can be improved.

In the above embodiment, a case where a single sewing pattern is repeatedly sewn has been described. However, even when two or more sewing patterns are selected and sewn, the start position of the selected and changed pattern is changed. The present invention can be applied as a presser foot control device at the time of moving.

Further, the work presser of the above-described embodiment holds the work cloth between the work presser plate 12 and the feed plate 10, but the work cloth is simply held by the work presser plate 12 on the work cloth support surface. You may make it move.

Further, the present invention is not limited to the pattern sewing machine described in the above embodiment, but can be applied to a pattern sewing machine such as an embroidery sewing machine.

[0022]

As is apparent from the above description, according to the cloth presser control device of the electronically controlled pattern sewing machine of the present invention, the presser foot is raised at the sewing end position of the sewing pattern, and the sewing machine is moved from the sewing end position. Since the work cloth can be taken out when the work clamp is moved to the start point of the sewing pattern to be sewn next, the work efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of an electronically controlled pattern stitch sewing machine showing an embodiment of the present invention.

FIG. 2 is a perspective view of a cloth presser showing an embodiment of the present invention.

FIG. 3 is a block diagram of a control system of the electronically controlled pattern sewing machine according to the embodiment of the present invention.

FIG. 4 is a flowchart showing an embodiment of the present invention.

FIG. 5 is an explanatory diagram of the present invention.

[Explanation of symbols]

 M Electronically controlled pattern stitch sewing machine 4 Main body 7 Cloth presser 8 Sewing machine controller 12 Cloth presser plate 29 CPU 30 ROM 31 RAM

Claims (1)

(57) [Claims] 1. A work cloth is held by a work presser traversing a vertical movement path of a needle on a work cloth support surface, and sewing pattern data having a start point position and a sewing end position different from those stored in advance in a storage means are different from each other. An electronically controlled pattern sewing machine which moves and presses the presser foot according to the following. At the end of sewing based on the sewing pattern data, a lifting control means for raising the presser foot from above the work cloth support surface is provided, A work cloth can be taken out during a movement from a sewing end position to a start point position of a next sewing pattern to be sewn.