JPH02104761A - Embroidering machine - Google Patents

Abstract

PURPOSE:To rapidly restart embroidery by equipping a supporting plate of cloth frame with a yarn pulling hole separately from an embroidery hole, moving the yarn pulling hole to a needle drop position based on memory data in the case of breakage of needle thread, pulling bobbin thread and transferring a cloth frame to a restarting position of embroidery. CONSTITUTION:A support plate 14 of a cloth frame 10 at the top of a head 2 having a needle drop position 3a is equipped with a yarn pulling hole 17 for extracting bobbin thread fitted to the top of a looper 7 separately from an embroidery hole 15. Further an operation control device 19 of frame moving mechanism having a memory part 20 to memorize data corresponding to desired embroidery pattern, present weft position and position, etc., of the yarn pulling hole 17 against a needle drop position 3a and a control part 25 to read the memory data and to operate the control device 19 are equipped. When bobbin thread is broken during embroidering operation, drive of sewing machine is stopped, the yarn pulling hole 17 is moved to the needle drop position 3a, the bobbin thread is pulled out onto the support plate 14 in a state of a cloth 16 attached to a stopping part 18 and the cloth frame 10 is moved to a restarting position of embroidery.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an embroidery sewing machine that moves a cloth frame and embroiders a desired embroidery pattern on a cloth fixed to the cloth frame.

[Conventional technology]

In the conventional 91 embroidery sewing machine, an embroidery hole larger than the area to be embroidered is provided on the support plate of the cloth frame, and a fastening part for wearing on cloth is provided around the periphery of the embroidery hole, so that the area to be embroidered on the cloth is The embroidery holes are polymerized and the surrounding area of the throw cloth is made to have an earthy texture.

[Problem to be solved by the invention]

This conventional embroidery sewing machine is designed to fasten the fabric around the fastening part at the edge of the G1 embroidery hole, so if the bobbin thread breaks during embroidery work, the fabric must be removed from the fastening part. After turning over the fabric and pulling the bobbin thread through the embroidery hole onto the table, the fabric must be attached to the attachment part again, which requires a tedious work to remove the bobbin thread (II!) There were some problems that took a long time.

In addition, in order to solve the above problem, it is possible to make the φ wire hole considerably larger than the 8N area where the cloth is to be embroidered, and to fix the cloth so as to cover part of the embroidery hole. With such a cloth, a part of the periphery of the cloth cannot be fixed, so a part of the periphery of the cloth is unsteady and easy to turn over, resulting in the problem that the embroidery pattern tends to collapse and disappear.

The present invention has been made in view of the above points, and its purpose is to fix the periphery of the area of cloth to be embroidered to a cloth frame to keep the area of cloth to be embroidered neatly stretched. Moreover, if the bobbin thread breaks, you can easily and quickly remove the bobbin thread without unfastening the fabric from the fabric frame. An object of the present invention is to provide an embroidery sewing machine that can perform embroidery sewing.

[Means to solve problems]

In order to achieve the above object, the present invention takes the measures as described in the claims above, and its effects are as follows.

[Effect]

When embroidering on cloth, by fixing the periphery of the cloth to the fastening part with the area to be embroidered on the cloth superimposed on the embroidery hole of the cloth frame, the area to be embroidered on the cloth can be kept neatly stretched. If the bobbin thread breaks during embroidery work, after raising the cloth frame movement, move the cloth frame manually or by command from the control unit so that the thread pull-out hole in the support plate is located at the needle drop position. This allows the bobbin thread to be pulled up onto the support plate using the thread pull-out hole without removing the cloth jacket. Thereafter, the cloth frame is moved manually or by a command from the control section so that the cloth embroidery restart position is located at the 1st drop position, and the embroidery pattern can be neatly embroidered again.

〔Example〕

The drawings showing the embodiments of the present application will be described below.

In FIGS. 1 and 2, l indicates an embroidery sewing machine;
In this case, reference numeral 2 denotes a head, which has a needle hole 3a (hereinafter also referred to as the 1-drop position 3a) and a thread hole 3b, which constitute a 1-drop position as shown in FIG. 4 is a head, and as is well known, the needle is moved up and down toward the needle groove position 113a. Equipped with $5. The needle bar 5 has a needle at its lower end and is connected to a well-known sewing machine drive device 6. Reference numeral 7 denotes a well-known louver located below the first drop position 3a, configured as shown in FIG. 6, for example, and connected to the sewing machine driving device 6.

Next, 8 shows a well-known frame moving mechanism attached to the head 2 (if necessary, refer to Japanese Utility Model Application Publication No. 59-27781). Next, in the cloth frame IO connected to the frame moving mechanism 8, reference numeral 11 denotes a frame body slidably placed on the bed top surface 3, and vertical and horizontal frame members 11a, Ilb
It is constructed using a framework of Japanese cedars. 12 is a frame) Olla
The handle of the movable frame 9 is fixed to the part 9a with screws 13. +4 is a support plate fixedly attached to the frontage of the frame 11; 15 is a support plate 14;
The embroidery hole provided in the embroidery hole is set to have a larger size than the embroidery area IGa of the cloth 16 to be embroidered. Reference numeral 17 denotes a thread pull-out hole provided in the support plate 14, which is provided at a position separate from the embroidery hole 15 and away from the embroidery hole 15. Reference numeral 18 denotes a fastening part provided around the periphery of the embroidery hole 15, and the P1 area of the cloth 16 is made of an adhesive surface that can be worn on a jacket, but it may also be made of other indigenous tools such as a presser foot. .

Next, reference numeral 19 denotes a control device for controlling the operation of the frame moving mechanism 8, which is constructed as shown in FIG. In the above-mentioned control device 19, reference numeral 20 denotes a storage section, which includes a storage section 21 for storing pattern data corresponding to the embroidery pattern, a second storage section 22 for storing the pattern start and sewing position of the embroidery pattern; Third to memorize the position of the thread pull-out hole 17! [! Ibe 23
etc. Reference numeral 25 denotes a control section that performs control according to the control programs shown in the flowcharts shown in FIGS. 7 to 9. 26 is an abs counter, which counts the amount of movement of the embroidery pattern relative to the pattern start position, and 26A is a thread breakage 7-pus counter, which is used for fabric frame! 0
The amount of movement of the cloth frame 10 relative to the thread breakage stop position is counted. 27 is human power H1t128 is output i
It is t. Next, in FIG. 6, reference numeral 29 denotes a reader for reading pattern data from a paper tape by manually inputting pattern data, and may also be a device for reading pattern data stored in a two-dimensional disk. Reference numeral 30 denotes a thread breakage detection device for detecting that the bobbin thread has broken, and as is well known, when a thread breakage is detected, the sewing machine drive device t6 and the frame moving mechanism 8 are stopped. 31 is a control panel, in which 32 is an operation preparation switch, 33 is a start switch, 34 is a stop switch, 35 is a first frame movement button for moving the cloth frame 10 in the X-axis (left and right) direction, and 36 is a control panel. (1 step before moving the cloth frame lO to the Y axis)
2nd frame movement button for moving in the direction, 37 is cloth frame 1
Original position to return 0 to the position where thread breakage occurs! It is a return switch. North is a thread processing position button for moving the cloth frame IO to the thread breakage processing position. 39 is a memory button for storing the thread breakage processing position. Reference numeral 40 denotes a display device which displays the starting position of the embroidery pattern, the current position of the cloth frame 1O, the position where thread breakage occurs in the embroidery pattern, and the like.

The operation of the above configuration will be explained step by step.

First, before starting the operation of the embroidery sewing machine, pattern data corresponding to a desired embroidery pattern is read by the reader 29 and stored in the first storage section 21.
Kii to. Further, as shown in FIG. 10(A), the embroidery planned portion 16a of the cloth 16 to be embroidered is overlapped with the embroidery hole 15, and the periphery of the cloth is attached to the fastening portion! The cloth frame 10 is moved manually or using a drive source in the horizontal direction 8, and the cloth frame 10 is moved by hand or using a drive source in the horizontal direction 8, and the cloth frame 10 is moved by hand or using a drive source in The pattern start position a of the 16 embroidery area 16a is positioned at the needle groove a3a as shown in FIG. 10(A).

Next, in the flowchart shown in Figure 7, even 1 is a cloth frame!
The pattern start position A of 0 and the position of the thread pull-out hole 17 are memorized. First, in step S1, turn on the operation preparation switch 32.
When operated, 11 on the X and Y axes of the aas counter 26
Set iXA and VA to zero (clear), and store the coordinates XA=O1VA=O of the pattern start position i (pattern origin). In step S2, it is determined whether or not the thread breakage processing position is to be stored;
If the result is NO, proceed to the start of operation, and if the result is YES by turning on the memory button 39, step S3
Thread breakage counter 26A.

X-axis and Y-axis (DllXI, Vl zero, X1=OS'1
1=ON 1 Next, in step S4, it is determined whether or not the first frame movement button 35 has been turned on, and if YES is determined by the θN operation of the first frame movement button 35, step S4 is performed.
Proceed to step 5, activate the frame moving machine 111B, and move the cloth frame 10 to
One pulse is driven in the axial direction, and the X-axis of the thread breakage counter 26A is calculated by the formula x+=x+++. Further, in the case of NO, it is determined in step S6 whether or not the second frame movement button 36 has been turned ON, and in the case of YES in the case of YES in the ON operation of the second frame movement button 36, the process proceeds to step S7, where the frame movement mechanism 8 operate the
The cloth frame 10 is driven by one pulse in the Y-axis direction, and the thread breakage 7 thread counter 26A1. Set the chain of IJY axis to V l
= )' Add according to the formula: l + 1. If the result is NO, the process proceeds to step S8, and it is determined whether or not the memory of the thread breakage processing position has ended. If the result is NO, the process returns to step S54 and steps S54 to S8 are repeated. That is, M
], operate the second frame movement buttons 35 and 36 υN to move to the 10th frame.
As shown in 121(B), the thread pull-out hole 17 is located at the needle drop position 3a.
When the cloth frame 10 is moved to the thread breakage processing position, the thread breakage counter 2 (iA 1
fiN, ■1 indicates the coordinate value of the thread pull-out hole 17. [Xl, 1') of the above thread breakage counter 26A
is displayed on the display device 40.Next, as described above, position the thread pull-out hole 17 at the needle groove position f13a, and if the result in step S8 is YES, step S9 moves the thread to the pattern start position a. Coordinate position of extraction hole 17\G, 'l'
G is calculated and stored as XG:Xl, YG=Vl. Thereafter, the cloth frame 10 is returned so that the pattern start position A is located at the needle drop position 3a as shown in FIG. 10(C), and then the operation is started.

The flowchart shown in FIG. 7 shows a method for storing the pattern start position A and the position of the thread pull-out hole 17 prior to the start of operation. The broach yard diagram shown in I shows that when the first thread breakage occurs at the start of operation, the fabric frame 10 is manually removed from the thread pull-out hole 17 and the drop device 3a.
This figure shows a method of moving the yarn to the position shown in FIG.

First, drive J with step Sl+! Turn on the preparation switch 32.
The coordinate position 11iXA=o, VA=O of the pattern start position A is stored in the same manner as in step 51 above. Next, in step S12, the start switch 33 is turned ONf+, whereby the sewing machine drive device 6 is activated and the needle 5a begins to move downward.

Further, in step 513, the pattern data X and Y recorded in the storage section 20 is read for one stitch. Next, in step St4, it is determined whether or not the frame timing of the cloth frame 10 is suitable for cloth frame movement. If the result is YES, the process advances to step S+5, and in step 515, the frame f hyperactivity is determined based on the X, )' data. Move the tm structure 8 by 1, move the cloth frame 10 by X data
The fabric frame 10 is moved a predetermined amount in the axial direction according to the Y data.

Also, in step 516, l+I of the abs counter 26A
XA, VA as XA=XA+X, YA=VA+V
Addition according to equation (7).

Next, in step SI7, it is determined whether or not there is a stop condition such as the operation of the thread breakage detection position 30, and if the result is No, that is, the sewing #ali is normal! If the
- Return to the knob 913, repeat steps 513 to SI7, and embroider the embroidery pattern based on the predetermined pattern data on the cloth I6 as shown in FIG. 10(D). If thread breakage occurs and the result of step SI7 is YES, the operations of the sewing machine drive device 6 and frame moving mechanism 8 are stopped in step 518, and the needle 5a and fabric frame 10 are moved by inertia for several stitches. After operating for five stitches, for example, it stops as shown in FIG. 10(E).

Next, in step S19, it is determined whether thread breakage processing (memory of the remaining thread is required or not), and if the result is YES by operating the memory button 39, step S20
Then, the position of the thread pull-out hole 17 is memorized. First, in step S20, the values X1 and Y are input to the thread breakage abs counter 26.
Set l to zero (clear). Then step 521~
In step 525, the cloth frame 10 is moved to open the thread pull-out hole 17 in the same manner as in steps 54 to S8 above. 3
Set a to 1 and add the thread breakage abs counter value \1, Vl. Next, if the result in step S25 is YES, in step 526, the coordinates XG and YG of the position of the thread pull-out hole 17 with respect to the pattern start (vertical position A (χA=O1YA=O)) are calculated, and teXG=X! -X1.
Store the value of YG=VA-Yl. Note that if the memorization of the yarn breakage processing position has been completed before the start of operation according to the flowchart shown in FIG. Proceed to processing step. Incidentally, the position of the thread pull-out hole 17 may be memorized manually using a key fob based on the design dimensions.

Next, as shown in FIG.
into the louver 7, and thread the bobbin thread a onto the lower end of the hook wire 41.
, and pull up the bobbin thread a onto the support plate 14.

After that, the cloth frame 10 is manually moved and returned to the original position where it stopped due to the thread breakage, and the vicinity of the thread breakage position of the embroidery pattern is moved to the position 3a! 6 In that case, by moving the cloth frame 10, the thread breakage coordinate x 1, 110 of yl is added and subtracted, and the \1
．． Since the value of 1' is displayed on the display device 40, it is possible to accurately move the cloth frame 10 to the original position where it stopped due to thread breakage without looking at the display on the display device a40. Cutting coordinate value x 1, Yl is sewing machine drive device a6
Since this does not include the value of several stitches operated by inertia force until the thread stops, stitch back the fabric frame 10 as necessary to move the fabric frame 10 to the position at the time when the thread breakage occurred.

Next, the operation of thread breakage processing will be explained according to the flowchart shown in No. 9121. First, in step 531, it is determined whether or not the thread processing position button 38 has been operated to move the cloth frame 10 to the thread breakage processing position, and the result is YES.
In this case, in step 532, the coordinates XA and VA of the break point of the embroidery pattern are read out, and in step S33, the above 1 is
distance m<movement fi) between the pattern break point opening of the ill m pattern and the position of the thread pull-out hole 17
Let P=XA-XG, YP=XA-XG. Otherwise step S34 [Cloth frame according to XP! 0 in the X-axis direction, move the fabric frame 10 in the Y-axis direction according to YP, and position the thread pull-out hole 17 at the needle drop position 3a as shown in FIG. Thereafter, in step 535, the thread processing operation for pulling up the broken bobbin thread a onto the support plate 14 is carried out in the same manner as shown in FIG.

Note that the above-mentioned thread processing operation includes rotating the louver 7 to a position where the bobbin thread can be pulled out, and returning the above-mentioned louver to its original position before starting embroidery. Next, in step 536, it is determined whether or not to return to the pattern break position mouth. If the result is YES, in step 537, the polarity of XP and VP is reversed, and in step 538, ll! The frame moving mechanism 8 is operated according to iXP and YP, the cloth frame 10 is moved by a predetermined amount in the X-axis direction according to the value xP, and the cloth frame 10 is moved by a predetermined amount in the Y-axis direction by 1 straight YP. As a result, the cloth frame 10 is shown in Fig. 10 (G).
As shown in Fig. 10(H), the fabric frame 10 is accurately returned to its original position due to the thread breakage.
Be able to accurately return the pattern break position opening of the embroidery pattern to the needle drop position 3a as shown in . After that, it starts operating again, and the embroidery pattern can be embroidered neatly and in continuation with the previous embroidery pattern.

〔Effect of the invention〕

As described above, in the present invention, when embroidering a cloth, the cloth is pasted on the cloth frame 10, and the cloth frame 10 is moved to perform the embroidery, and a desired embroidery pattern is embroidered on the cloth. There is an effect that can be done. Moreover, in the above case, the support plate 1 of the cloth frame 10
The embroidery area of the fabric is superimposed on the embroidery hole 15 provided in the embroidery hole 15 of the fabric. It can be embroidered in a stretched state, and the embroidery pattern can be accurately embroidered on the area of the fabric that is to be embroidered, resulting in a neat embroidery pattern.

In addition, if the bobbin thread breaks, after stopping the driving of the sewing machine and movement of the cloth frame, move the cloth frame 10 so that the thread pull-out hole 17 is at the needle drop position 3a.
By moving the thread so that it is located at
7, the bobbin thread can be pulled up onto the support Fi 14, and as a result, even when the periphery of the area to be embroidered on the cloth is secured to the attachment part 18, the attachment state of the cloth is maintained. This has the effect of easily and quickly pulling up the bobbin thread onto the support plate 14.

Furthermore, in the present invention, after the bobbin thread breaks or when pulling up the bobbin thread to start embroidery again, the fabric frame 10 is moved in the needle groove position i3a direction or This allows the cloth frame to be moved toward the embroidery restart position when the bobbin thread breaks as described above.
This has the effect of speeding up both when moving the needle to draw out the bobbin thread and when starting embroidery following the embroidery pattern at the time when the bobbin thread broke.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, and FIG. 1 is a perspective view of an embroidery sewing machine, FIG. 2 is a partially omitted plan view, FIG. 3 is an enlarged sectional view taken along the line ■-■, and FIG. An enlarged cross-sectional view taken along the line IV-IV, FIG. 5 is a cross-sectional view showing the thread breakage processing operation, and No. 61! I
7 is a block diagram showing the electrical configuration of the embroidery sewing machine, and FIG. 7 is a flowchart showing the operation for memorizing thread extraction holes.
FIG. 8 is a flowchart showing operations different from those in FIG. 7, FIG. 9 is a flowchart showing operations for thread breakage processing,
Figure 10 (A) to (I]) shows the movement of the cloth frame at 1llil.
An explanatory diagram shown in FIG. ! ...Embroidery machine, 2...＼d, 3a...
Needle drop position, 4... Hent, 5... Needle bar, 7... Looper, 8... Frame moving mechanism, IO... Cloth frame, 14...
・Support plate, 15...Embroidery hole, 17...Thread pull-out hole, 1
8... Attaching section, 19... Control device, 20... Storage section, 25... Control section. m6 Figure 7 Figure N 9 Ward

Claims (1)

[Claims] 1. A bed having a needle drop position, a head having a needle bar that moves up and down toward the needle drop position, and a louver located below the needle drop position, The bed is equipped with a frame moving mechanism for moving the cloth frame, and the cloth frame is provided with a support plate having an embroidery hole larger than the area to be embroidered, and the bed is equipped with a frame moving mechanism for moving the cloth frame. The embroidery machine is equipped with a fastening part on the periphery of the embroidery hole that can fasten the fabric with the area to be embroidered overlapped with the embroidery hole. is an embroidery sewing machine that has a thread pull-out hole for pulling up the bobbin thread that overlaps above the louver located below the needle drop position and is separate from the embroidery hole. 2. A bed having a needle drop position, a head having a needle bar that moves up and down toward the needle drop position, and a louver located below the needle drop position, and a cloth is slidably attached to the top surface of the bed. A frame is placed on the bed, and a frame moving mechanism for moving the cloth frame is attached to the bed, and the cloth frame is provided with a support plate having an embroidery hole larger than the area to be embroidered, and a support plate is provided on the periphery of the embroidery hole. A fastening part is provided that can fasten the periphery of the cloth in a state where the area to be embroidered on the cloth is overlapped with the embroidery hole, and the support plate has a louver located above the needle drop position. A thread pull-out hole for pulling up the bobbin thread by overlapping is provided at a location separate from the embroidery hole, and further includes a control device for controlling the operation of the frame moving mechanism, and the control device has a desired control device. The embroidery machine is equipped with a storage unit that stores pattern data corresponding to the embroidery pattern, the current sewing position, and the position of the thread pull-out hole relative to the needle drop position, and a control unit that reads the stored data and operates the frame moving mechanism. embroidery sewing machine.