DE102008010353A1 - Sewing machine comprises corner cutting mechanisms with corner cutters, a unit for selecting the corner cutters, a vertical movement mechanism for moving the corner cutters in the vertical direction, adjusting units and a control unit - Google Patents

Abstract

Sewing machine comprises corner cutting mechanisms (100A, 100B) with corner cutters (101, 103), a selecting unit (120) for selecting the corner cutters, a vertical movement mechanism (130) for moving the corner cutters in the vertical direction, adjusting units and a control unit for controlling a sewn material advancing mechanism and the corner cutters. Preferred Features: The selecting unit has a positioning motor (121) which moves each of the corner cutters in a direction perpendicular to the sewn material advancing direction.

Description

TECHNICAL AREA

The The present invention relates to a binding machine that is operable is to form a Einassteil with an opening part, which has an oblique angle.

RELATED PRIOR ART

One Einas part is formed by that on a border and a Hauptnähgut, z. B. a Hauptnähgut of a suit on which the border is placed, two parallel Seams formed and a straight incision between and be formed parallel to the seams, and then that V-shaped corner notches on respective end parts of the rectilinear incision are formed. In a general Boundary process becomes stitch pattern start positions and stitch end positions the two seams each in a direction perpendicular to aligned at the seams, and each of the corner cuts is formed so that the ends of the V-shaped corner notches coincide with aligned ends of the sutures, so that a rectangular opening part is formed.

In In some cases, however, the stitch ends of the two Seams shifted against each other in one direction, along which the seams are formed around an opening part form with an oblique angle, z. B. an opening part in the form of an oblique parallelogram.

With respect to such a boxing operation with an opening portion having an oblique angle disclosed JP-A-2000-107473 a technique in which a pair of corner knives serving as a V-shaped corner knife are shifted from each other by a length equal to a shift length between the stitch forming ends of the two seams (which may be hereinafter referred to as a "deviation") ,

JP-B2-1-38519 discloses a bordering machine having a plurality of corner knives corresponding to a plurality of opening portions having different oblique angles. In this bordering machine, a matching corner blade of the plurality of corner knives is selected in accordance with a deviation, that is, in accordance with an oblique angle of an opening portion to be formed.

Problems in a binding machine, as in the JP-A-2000-107473 are described with reference to 31A and 31B described. In the figures, TL, TR denote seams, S denotes a straight line cut, 201 and 202 corner blade parts, and C denotes a shifted length between the ends of the two seams on one side in a direction along which the seams are formed, that is, the deviation.

In a case where a corner incision with the deviation C is formed, and in which the deviation C is set large, e.g. B. 4 mm or more, a distance C 'from one end of the straight incision S to a base end of the inner Eckmessers 202 also big.

If in such a case the corner knife 202 trying to penetrate through the main crop, the main crop is likely to be lifted upwards in a direction in which the corner knife is 202 emotional. Thus, there is a problem that the main sewing can not be cut so as to have a desirable cutting length. A double-dashed line R in 31B shows a section of an ideal corner cut.

What the binding machine, in the JP-B-1-38519 As far as the description is concerned, any deviation that can be dealt with is limited by the corner knives which are preinstalled in the bordering machine. Thus, there is a problem that the framing machine lacks versatility. Although it can handle any deviations by manually adjusting the angles of the corner knives, such an adjustment operation is very complicated and cumbersome.

SUMMARY OF THE INVENTION

It An object of the present invention is to provide means to easily and reliably a corner cut of good quality train it, taking it simultaneously with a change has to do in a deviation.

According to a first aspect of the invention, a binding machine ( 10 ):
two separately arranged needles ( 41 ) to form two parallel, straight seams (TL, TR) on a main sewing material (M) and a bordering patch (B);
a needle vertical movement mechanism ( 40 ), which is operable to move the two needles ( 41 ) in a vertical direction (Z);
a fabric feed mechanism ( 20 ) operable to hold and feed the main sewing material (M) and the binding patch (B) in a cloth feeding direction (F);
a movement-measuring mechanism ( 50 ) operable to form a straight line cut (S) between the two straight seams (TL, TR);
a pair of corner knives ( 100A . 100B ) arranged to correspond to respective end portions of the rectilinear notch (S), each of the corner knuckle mechanisms ( 100A . 100B ) is operable to form corner cut portions (VFL, VFR, VRL, VRR) between the corresponding one of the end portions of the straight cut (S) and each of the adjacent end portions of the two straight seams (TL, TR); and
Control means ( 81 ) for controlling each of the mechanisms ( 40 . 20 . 50 . 100A . 100B ) to form the two straight seams (TL, TR) so that positions of the adjacent end parts of the two straight seams (TL, TR) in the work feed direction (F) are different from each other, and around the corner cut parts (VFL, VFR, VRL, VRR) starting from the respective end parts of the two straight seams (TL, TR) to form the straight line incision (S) obliquely.

Each of the pair of corner mechanisms ( 100A . 100B ) comprises:
a plurality of corner knives ( 101 . 102 . 103 . 104 ) operable to form the corner cut portions (VFL, VFR, VRL, VRR) on respective sides of the straight seam (S) having different cut lengths;
a selection mechanism ( 120 . 220 ) operable to remove from the plurality of corner knives ( 101 . 102 . 103 . 104 ) to select a pair of corner knives for the respective sides of the rectilinear notch (S); and
a vertical movement mechanism ( 130 ) operable to move the selected pair of corner knives in the vertical direction (Z).

The bordering machine ( 10 ) also includes:
Deviation adjustment means ( 85 ) for setting information regarding a deviation (CF, CR) between the adjacent end parts of the two straight seams (TL, TR) in the work feed direction (F);
Deviation decision-making means ( 81 ) for deciding, based on the information regarding the deviation, whether or not the deviation (CF, CR) exceeds a threshold value; and
Corner incision part inside / outside decision means ( 81 ) for deciding whether to form each of the corner cut parts (VFL, VFR, VRL, VRR) to be formed from each of the adjacent end parts of the straight seams (TL, TR) to the straight line cut (S), with respect to a center of the straight line Incision (S) in the Nähgutvorschubrichtung (F) on an inner side or an outer side.

The control means ( 81 ) are operational to
the fabric feed mechanism ( 20 ) and the corner knives ( 100A . 100B ) in such a way that when the deviation decision center ( 81 ) decide that the deviation (CF, CR) is smaller than the threshold value, each of the inner corner cut portions is formed at a position shifted from the position of the corresponding one of the outer corner cut portions in the cloth feed direction (F) by the deviation (CF, CR) is and
the selection mechanism ( 120 . 220 ) such that when the deviation decision means ( 81 ) decide that the deviation (CF, CR) is greater than the threshold value, the 102 . 104 ) with longer incision lengths are selected for the respective outer corner cut portions as compared with a case where the deviation (CF, CR) is smaller than the threshold value.

According to a second aspect of the invention, the bordering machine ( 10 ) Farther:
Distance input means ( 85 ) for inputting a distance between an end portion of each of the corner cut portions (VFL, VFR, VRL, VRR) on a side of a corresponding one of the straight seams (TL, TR) and a corresponding one of the straight seams (TL, TR) in a direction (Y) perpendicular to the material feed direction (F).

The selection mechanism ( 120 . 220 ) comprises a positioning motor ( 121 . 221 ), each of the corner knives ( 101 . 102 . 103 . 104 ) is moved in the direction (Y) perpendicular to the cloth feed direction (F).

The control means ( 81 ) are still operable to move the positioning motor ( 121 . 221 ) in such a way that with respect to the Eckmesser ( 101 . 102 . 103 . 104 ), which by the vertical movement mechanism ( 130 ) in the vertical direction (Z), a distance between an end portion of the corner blade ( 101 . 102 . 103 . 104 ) on one side of the straight cut (S) and the straight cut (S) in the direction (Y) to the cloth feed direction (F) becomes equal to the distance defined by the distance input means (5). 85 ) is set.

According to a third aspect of the invention, the movement mechanism ( 50 ):
a motion meter ( 51 ) held above a feeding path of the main sewing material (M) and the skirting spot (B) so as to be movable in the vertical direction (Z); and
a knife motor ( 57 ), which the motion meter ( 51 ) is moved in the vertical direction (Z).

The control means ( 81 ) are also operable to move the blade motor ( 57 ) and the Nähgutvorschubmechanismus ( 20 ) to control such that the rectilinear incision (S) starting from an end portion of one of the outer corner cut-in portions on one side of the rectilinear incision (S) to ei an end portion of the other of the outer corner cut-in portions is formed on one side of the straight-line notch (S).

According to a fourth aspect of the invention, the selection mechanism ( 220 ) a slider crank mechanism operable to provide a rotational force in a linear, reciprocating motion for selecting the corner knives ( 101 . 102 . 103 . 104 ) to convert.

According to a fifth aspect of the invention, the selection mechanism positions ( 220 ) the respective corner knives ( 101 . 102 . 103 . 104 ) at a plurality of positions within a reciprocating region of the linear, reciprocating motion around the respective corner knives ( 101 . 102 . 103 . 104 ). The plurality of positions include respective ends of the to-and-fro area.

The "deviation" on each of the sides of the insert part in the work feed direction means a distance (CF, CR) between the end part of the straight seam which extends to the outer side and the end part of the other straight seam on the inner side (see FIG 2 ). The "information regarding a deviation" is required to provide the deviation in sewing, and may be information indicating directly a length of the deviation and which of the ends of the two seams is set on the outer side, or may be indirect information be, from which the length of the deviation and which of the ends of the two seams is set on the outer side, can be obtained.

In the description will be a part closer to the middle of the rectilinear incision in the material feed direction referred to as the "inner side" or the "inner side", and a Part moving in the direction of material feed farther away from the Middle of the rectilinear incision is called the "outer Page "or the" outside " the corner incision part that is decided for that he is positioned on the outside, as the outer corner cut designated, and the corner incision part, decided for is that he is positioned on the inside is called the inner Corner cut part called.

in the Generally, in the boxing process, the straight-line incision becomes between a base part (an end part on the side of the straight line section) the outer corner incision part on one side in a sewing direction and a base part of the outer one Corner cut part on the other side in sewing direction educated. In a strict sense, the straight-line nick becomes designed so that it starts in some cases extends from the base part to the outer side. However, such a running part of the rectilinear incision is minor.

If in a boxing operation the corner incision with a deviation between the outer corner incision part and the inner corner cut part is formed to an opening part with form an oblique shape becomes an incision defect, d. H. insufficient cutting with respect to the inner Corner incision part likely to occur once the deviation gets bigger. This goes back to the fact that when the deviation becomes larger, one Length of a part of the rectilinear incision on the Outside of the base part of the inner corner recess part gets bigger. In other words, if the length the part of the rectilinear notch on the outside of the Base part of the inner corner recess part is reduced is the fabric after the penetration of the corner knife for forming the inner corner incision part is less likely to be raised, allowing a proper incision process to be performed can be.

According to the first aspect of the invention, when the deviation is large, the outer corner incision part of the corner knife executed with a longer cutting length. Therefore, it is possible to use the respective end parts of the rectilinear Incision more on the inner side to place. In the result It is possible to change the length of the part of the rectilinear Incision on the outer side of the inner Corner cut part, d. H. a length starting from the Base part of the inner corner cut part towards a base part the outer corner incision part to make smaller. As a result, the corner cut can be made to be ideal Approximate V-shaped incision. Furthermore is It is less likely that the sewing material after penetration of the corner knife for forming the inner corner cut part becomes, and it becomes possible, a proper Perform cutting process.

Although a displacement in the Nähgutvorschubrichtung between the base parts of the pair of Eckeinschnittteile is caused when the deviation is provided, the cutting operation of the Eckmessers on the inner side can be carried out in an appropriate manner. There is no such drawback that a framing operation with an opening part having an oblique angle can be performed only when a deviation corresponds to a limited combination of corner knives where bases of the mutual corner recess parts to be formed are not in the fabric advancing direction are shifted against each other, as in the conventional art. Any deviations can be be adjusted so that the versatility can be improved.

The Length of rectilinear incision may be prior to a suturing process entered and set by providing adjustment means be, or they may be in compliance with the tax credits the incision length of the corner knives are calculated.

According to the second aspect of the invention, the positioning motor is provided around each of the corner knives in the direction perpendicular to the fabric feed direction to move. Therefore, it is possible to have an orientation like that perform that a distance in the direction perpendicular to the material feed direction between one of the end parts (the base part) of the corner knife on the inner side of the rectilinear Incision and the straight incision equal to the set Distance is. Thus, the base part of the corner recess part at an arbitrary, adjusted distance with respect to the rectilinear incision in the direction perpendicular to the workpiece feed direction be formed.

In the distance input means becomes the distance between one of the end parts the corner incision part on the side of the rectilinear seam and the straight seam in the direction perpendicular to the workpiece feed direction entered. However, it is obvious that there is a gap between the other end part of the corner incision part on the rectilinear side Incision and the rectilinear incision in the direction perpendicular can be entered to the material feed direction.

According to the third aspect of the invention is controlled so that the rectilinear Incision starting from the base part of one of the outer corner recessed parts up to the base part of the other of the outer Corner cut parts is formed. That's why it's for example in a case in which the control means the Eckmesser with a longer Cutting length in accordance with the decision of the deviation decision means, possible, the straight-line incision starting from the base part of one of Corner cut-in parts to that of the other corner cut-in part, without restoring the length of the rectilinear incision, train.

According to the fourth aspect of the invention concludes the selection mechanism a slider crank mechanism that is operable is to turn a momentum into a linear, reciprocating motion to select the corner knives to convert. Consequently The choice of corner knives can be done with a simple mechanism become. It is therefore possible to have a productivity of Improve device and reduce manufacturing costs.

According to the Fifth aspect of the invention uses the selection mechanism the slider crank mechanism. The torque at a constant Speed becomes a linear, reciprocating motion converted, a speed of linear, reciprocating Movement in the reciprocating direction changed in accordance with a sinusoid. Therefore at respective end portions of the reciprocating range of motion the speed is low and the speed is changing is moderate. Accordingly, it is by setting a position at which the corner knife at the end parts of the back and forthcoming range of motion is possible, to get a smooth operation when the corner knife in each of the Positions is selected. Therefore, it is possible Effectively a vibration, a noise and a Positioning error to suppress.

BRIEF DESCRIPTION OF THE DRAWINGS

1 is a perspective view showing a schematic structure of an entire bordering machine,

2 FIG. 10 is an explanatory view showing a relationship of an arrangement between a straight line cut formed by a center knife, a cut formed by a corner knife, and seams taken from two needles in a boxing operation for making a pocket opening part. FIG Takes shape, is formed,

3 Fig. 3 is a perspective view showing a needle vertical movement mechanism;

4 13 is a perspective view showing a cutting-enabling state of the needle vertical movement mechanism and a central knife mechanism;

5 is a perspective view showing each corner knife mechanism,

6 is an enlarged perspective view showing a state in which each Eckmesser is provided

7A Fig. 10 is an explanatory view showing the operation of selecting the corner blade to perform a vertical movement;

7B Fig. 10 is an explanatory view showing an example of setting each Eckmessers,

7C FIG. 10 is an explanatory view showing a state in which an up-down console engages with a cylinder console; FIG.

8th is a block diagram showing a control system including operation control means of the binding machine,

9 Fig. 14 is a table showing various setting items which are previously inputted to the operation control means by display input means to perform a binding operation;

10A to 10D are explanatory views showing how a dimension L is determined in cases where lengths of left and right straight seams are different,

11 Fig. 15 is a view showing a display example of a setting input screen (1) represented by the display input means;

12 Fig. 15 is a view showing a display example of a setting input screen (2) represented by the display input means;

13 Fig. 15 is a view showing a display example of a setting input screen (3) represented by the display input means;

14A is an explanatory view showing a Einschneidteartposition the central knife,

14B is an explanatory view showing a Einschneideendposition the central knife,

15 Fig. 15 is a view showing a display example of a setting input screen (4) represented by the display input means;

16 Fig. 13 is a view showing a display example of a setting input screen (5) displayed by the display input means.

17 FIG. 10 is a flowchart showing an operation control of the bounding operation; FIG.

18 is a flowchart that follows the process of 17 with the presentation of the operational control of the single-edged process,

19 is a flowchart that follows the process of 18 with the presentation of the operational control of the single-edged process,

20 Fig. 10 is an explanatory view showing a positional relationship between the respective corner knife mechanisms when a corner cut is formed;

21 Fig. 10 is an explanatory view showing a positional relationship between the respective corner knife mechanisms when the corner cut is formed;

22 Fig. 10 is an explanatory view showing a positional relationship between the respective corner knife mechanisms when the corner cut is formed;

23 Fig. 10 is an explanatory view showing a positional relationship between the respective corner knife mechanisms in the formation of the corner cut,

24 is an explanatory view showing a fine positioning adjustment of an index in the Y-axis direction,

25 Fig. 9 is a view for explaining advantages obtainable by features of the invention;

26 Fig. 9 is a view for explaining further advantages obtainable by features of the invention;

27A to 27C are explanatory views showing a cutting operation of the corner knife after the positional adjustments made in succession,

28 FIG. 10 is an explanatory view showing an operation according to another example of an index moving mechanism, wherein FIG 28A a state in a leftmost position of the index, 28B a state in a middle position of the index and 28C show a state in a rightmost position of the index,

29 Fig. 12 is a perspective view showing an indexing mechanism using a slider crank mechanism instead of a ball screw mechanism;

30A to 30C are views for explaining a positioning operation, which must be performed for three positioning points to select the respective Eckmesser, and

31 Fig. 11 is a view for explaining problems of the prior art, illustrating a state in the formation of the corner cut, wherein 31A shows a state that is set before a cutting start, and 31B shows a state set immediately after the cutting start.

DETAILED DESCRIPTION

(Description of the by the binding machine completed edging operation)

Hereinafter, referring to 1 to 30 a binding machine 10 described according to an embodiment of the invention. 1 is a perspective view of the entire frame machine 10 , In the following description, directions are defined by X, Y, and Z axes shown in the drawings. A Z-axis direction is a direction along which a central knife 51 up and down and which is perpendicular to a working plane on which a sewing operation is performed, an X-axis direction is a direction along which a fabric is fed and which is parallel to the working plane, and a Y-axis direction is a direction perpendicular to X-axis direction and parallel to the working plane.

2 is an explanatory view showing a Einfaßtils on which a pocket opening part is to be formed with an oblique angle. In particular shows 2 a positional relationship between a straight line incision S, that of the central knife 51 Corner cut parts VFL, VFR, VRL and VRR are formed by respective corner knives 101 . 102 . 103 . 104 be formed, and stitched TL, TR, by two needles 41 be formed. As in 2 In the following description, a front side in a cloth feed direction F is a discharge side of the cloth feed direction F, a back side in the cloth feed direction F is a feed side in the cloth feed direction F, a left side is a left side in the machine direction F in the direction of view. Axial direction, and a right side is in the direction of the Nähgutvorschubrichtung F a right side in the Y-axis direction.

The binding machine 10 is operable to sew a border B onto a main fabric M with the two parallel seams TL, TR coming from the two needles 41 are formed, which are arranged at a distance from each other, and it is further operable to trainees the rectilinear incision S along the Nähgutvorschubrichtung F and V-shaped corner cuts trainees at respective end portions of the straight incision S. Each of the V-shaped corner notches consists of a pair of corner cut pieces.

When a pocket opening portion is formed at an oblique angle in a boxing operation, one of the straight-line seams (eg, the seam TL on the left side in FIG 2 ) is formed so that it extends in the Nähgutvorschubrichtung F to the rear side of the other rectilinear seam. In the following description, a rear deviation CR denotes a shift amount from a rear end of the straight seam TR to a rear end of the straight seam TL in a cloth feed direction F, and a front side deviation CF denotes a shift amount from a front end of the straight seam TR to a front side End of the straight seam TL in the cloth feed direction F. The "deviation" (CF or CR) denotes a distance in the cloth feed direction F at the front side or the back side of the insert part, from the end of the straight seam on an outer side to the end of the other straight seam on an inner side (please refer 2 ).

Of the Corner incision part VFR is from the front end of the straight line incision S to the front end of the right-hand side rectilinear seam TR formed out, and the corner incision part VFL is starting from one opposite the front End of the straight incision S slightly backwards offset position to the front end of the left-sided rectilinear Tail TL formed out. The corner incision part VRR is outgoing from one opposite the back end of the rectilinear incision S slightly forward Position to the back end of the right-hand rectilinear seam TR trained, and the Eckeneinschnittteil VRL is outgoing from the back end of the rectilinear incision S to the back end of the left-hand straight seam TL trained.

It is obvious that the binding machine 10 Also operable to form an opening portion having no deviation at both front ends and rear ends, that is, a right-angled opening portion having two straight seams which are not displaced from each other.

(Overall structure of the binding machine)

The binding machine 10 includes: a sewing machine table 11 , which serves as a work base for a sewing operation, a sewing machine frame 12 , the on the sewing machine table 11 is arranged, a Klemmfußschub mechanism 20 (A cloth feed mechanism) operable to hold a cloth (the main cloth M and the pad B) and advance in the direction F, a binding device 30 , which is operable to press the border B from the top onto the Hauptnähgut M, a needle vertical movement mechanism 40 (a seaming mechanism) operable to stitch on respective sides of the straight line cut S in the vicinity of a front side part of the binding device 30 perform in Nähgutvorschubrichtung F, a central knife mechanism 50 (A motion meter mechanism) that is operable to a central knife 51 Moving up and down on a front side of the needles located in the Nähgutvorschubrichtung 41 so as to form the straight line cut S through the sewing materials B, M between and along the seams TL, TR, corner knitting mechanisms 100A . 100B corresponding to the respective ends of the straight incision S, to form V-shaped corner notches, respectively, and operation control means 80 for controlling each of the parts described above.

Everyone the parts will be described in detail below.

(Sewing machine table and sewing machine frame)

The sewing machine table 11 has a top parallel to an XY plane and is used in a horizontal state. The top of the sewing machine table 11 is formed in a rectangular shape extending in the Nähgutvorschubrichtung F, ie in the X-axis direction. The clamp foot feed mechanism 20 and the bordering device 30 are on the sewing machine table 11 arranged while the corner knives mechanisms 100A . 100B under the sewing machine table 11 are arranged.

The sewing machine table 11 is with a needle plate 13 equipped under the two needles 41 is placed. The throat plate 13 is with two needle holes corresponding to the respective needles 41 equipped, and (not shown) horizontal boats are arranged under the respective needle holes. One through each of the needles 41 inserted thread is passed through one of the corresponding horizontal shuttles under the throat plate 13 caught and entangled with a lower thread, which is unwound from the horizontal boat, whereby the stitches are formed.

The throat plate 13 is further formed with a slot through which the central knife 51 is insertable. The slit is formed in a cloth feed direction F on a front side of the needle holes and in the center of the needle holes in the Y axis direction. A (not shown) stationary knife, with the central knife 51 works together to cut the sewing material is arranged under the slot.

The sewing machine frame 12 includes: a bed section 12a on one side of the intermediate part of the sewing machine table 11 is arranged in the longitudinal direction, a vertical column part 12b , from the bed section 12a protrudes upward, and an arm part 12c extending in the Y-axis direction from an upper end of the vertical column part 12b extends. Most parts of the needle vertical movement mechanism 40 and the central knife mechanism 50 are in the arm part 12c accommodated. The needles 41 and the central knife 51 are held so that they extend from a lower end portion of the arm part 12c extend at the front side downwards.

(Needle vertical moving mechanism)

3 is a perspective view showing the needle vertical movement mechanism 40 , The needle vertical movement mechanism 40 includes: the two needles 41 which represent a twin needle, two needle bars 42 each of which has a corresponding needle 41 holding at its lower end, a support frame 49 , the needle bars 42 such holds that every needle bar 42 is vertically movable, a needle bar holder 44 , the two needle bars 42 holds, a main shaft motor 45 acting as a source of power for vertical movement of the needles 41 serves, a main wave 46 that from the main shaft motor 45 can be set in rotation (see 8th ), a turning weight 47 firmly attached to one end of the main shaft 46 is coupled to perform a rotational movement, and a connecting rod 48 one end of which is at an eccentric position relative to a center of rotation of the rotational weight 47 and the other end to the needle bar holder 44 is coupled.

The main shaft 46 is inside the arm part 12c supported so as to be rotatable about the Y axis, and a full rotational force is applied to them from the main shaft motor 45 created. When the main shaft 46 Turns, the turning weight turns 47 so that the end of the connecting rod 48 a circular motion around the sewing machine main shaft 46 around performs. A Z-axis motion component of the circular motion of the end of the connecting rod 48 gets on the needle bar holder 44 at the other end of the connecting rod 48 transferred so that the needle bars 42 to move in the vertical direction.

The needle bar holder 44 includes a latch mechanism (not shown), which is operable to hold and release each needle bar 41 switch. The support frame 49 also includes at its upper end portion a holding mechanism (not shown) operable to hold and release each needle bar 41 switch. Holding and releasing each needle bar 41 can be switched by operating the Schnäppermechanismus and the holding mechanism from the outside. More in detail: A needle switching electromagnet 43 (please refer 8th ) is in close proximity to the support frame 41 provided to perform switching operations on each of the mechanisms.

In accordance with the operation of the needle switching electromagnet 43 emanating, both needle bars can 41 be held in the Schnäppermechanismus, or one of the needle bars 41 can be held in the snap mechanism while the other needle 41 held in the holding mechanism.

It is therefore possible to have a holding state of the needle bars 41 under Freeze patterns at appropriate timing settings to switch. When a one-way part is formed at an oblique angle, the formation of one of the left and right straight seams TL, TR is started sooner than the other, and one of the left or right straight seams TL, TR is terminated so as to be earlier than the other is trained.

(Central knife mechanism)

4 is a perspective view showing the needle vertical movement mechanism 40 and the central mechanism 50 in a state enabling a cutting.

The central knife mechanism 50 includes: the central knife 51 for the formation of the rectilinear incision 5 , by its vertical movement, a fixed knife (not shown) under the throat plate 13 is fixed to the sewing materials B, M in sliding contact with the central knife 51 to cut in, a knife bar 52 that the central knife 51 stops at its lower end and inside the arm part 12c is held so that it is slidable in the Z-axis direction, a knife motor 57 (a stepper motor) for vertical movement of the central knife 51 , a plurality of links 59 for transmitting a vertical driving force to the knife bar 42 through an eccentric cam 58 that is eccentric to an output shaft 57b the knife motor 57 is attached, an air cylinder 65 (An actuator) serving as a drive source for switching the incision permitting state (a lower position) and a scoring restricting state (an upper position), and a stopper 68 to stop a piston coming out of the air cylinder 65 protrudes.

When the piston of the air cylinder 65 withdrawn (a state of 4 ) are the central mechanism 50 in the cutting-enabling state in which the rotational force of the knife motor 57 is converted into a vertical, reciprocating motion, and the vertical, reciprocating motion becomes the central knife 51 transfer. When the piston of the air cylinder 65 protrudes (not shown), is the central knife mechanism 50 in the clipping restricting state in which the rotational force of the knife motor 57 not on the central knife 51 is transmitted.

When the knife motor 57 turns while the piston of the air cylinder 65 retired, become the knife bar 52 and the central knife 51 by the output shaft extending in the Y-axis direction 57b , the eccentric cam 58 which is connected to the output shaft 57b is attached, and the connecting links 59 moved vertically, whereby a cutting operation is performed.

If, on the other hand, the piston of the air cylinder 65 protrudes, are the links 59 arranged such that the force of the knife motor 57 not on the knife bar 52 is transmitted, and the central knife 51 is held so that it is above the throat plate 13 is ready.

Accordingly, the cutting-enabling state and the cutting-in limiting state of the center knife become 51 by the driving process of the air cylinder 65 switched.

(Einfassvorrichtung)

The bordering device 30 comprises: a bottom plate part 31 , an upright plate part 32 extending from an upper side of the bottom plate part 31 in a longitudinal direction of the bottom plate part 31 so extends upward that it is perpendicular to the top of the bottom plate part 31 runs, a guide part 33 located at a front end of the upright plate part 32 extends in Nähgutvorschubrichtung F to guide the Einfassfleck B so that it is the central knife 51 and a longitudinal guide (not shown) that guides the border B such that each of the broad side portions of the border B is along respective side surfaces of the upright plate portion 32 is advanced. The bordering device 30 is held by a holding mechanism (not shown) with an air cylinder and, when not in use, is in a standby position from the area under the two needles 41 from is located, as in 1 shown. If the binding device 30 is used, the binding device 30 set in a position in which the needle plate 13 is placed by a driving operation of the air cylinder.

The bottom plate part 31 has a rectangular shape and is held such that its longitudinal direction is parallel to the X-axis direction, and such that a lower side thereof is on a surface of the sewing machine table 11 is placed when it is used. The bottom plate part 31 is with (not shown) U-shaped notches on its front edge portion for each needle 41 designed to make a stitch formation through them.

The upright plate part 32 is plate-shaped except for a part around the guide member 33 around. The upright plate part 32 extends from the top of the bottom plate part 31 up. The upright plate part 32 extends along the longitudinal direction of the bottom plate part 31 in the middle of the bottom plate part 31 with respect to the Y-axis direction. Accordingly, the bottom plate part 31 and the upright plate part 32 , which are formed in a one-piece structure, the cross-sectional shape of an inverted T viewed in the longitudinal direction of the enclosure 31 ,

When the border B is placed over the main thread M and so over the throat plate 13 is set, the bordering device 30 applied to it from above. The wide side parts (ie the side parts right and left in 2 ) of the border B are folded back so that they start from respective sides of the bottom plate part 31 are directed upwards, and they are by clamping feet 21 held such that the wide side parts along the side surfaces of the upright plate member 32 extend. In other words, the curb B is wound around the cradle, starting from one of the side surfaces of the upright plate part 32 to the other side surface 32 through a bottom of the bottom plate part 31 , In this state, in which the border B is set and around the bordering device 30 Wrapped around, the Einfassfleck B and the Hauptnähgut M are advanced and at the same time lead the needles 41 on respective sides of the upright plate part 32 a stitch, and the central knife 51 moves in the vertical direction to form the rectilinear sipe S.

The guide member 33 is on the front part of the enclosure 30 arranged in the Nähgutvorschubrichtung F to prevent the Einfassfleck B from the central knife 51 to be cut in. The guide member 33 is fork-shaped toward the fabric feed direction F, so that when viewed from above, it has a V-shape. Due to this shape, the wide-side parts of the border B are guided in a direction from the upright plate part 32 is separated, leaving it from the central knife 51 be kept away.

(Klemmfußvorschubmechanismus)

The clamp foot feed mechanism 20 includes: the clamp foot 21 which is operable to move the main crop from above on respective sides of the border B which surrounds the casing 30 is set to press, a holding member 22 that the clamp foot 21 holds an air cylinder (not shown) for moving the clamp foot vertically 51 over the holding member 22 , (not shown) folding plates on the respective clamping feet 21 are provided to the broadside side parts of the border B over an upper surface of the lower plate part 31 fold over each other by reciprocating, and a press engine 23 (please refer 8th ) (Feed drive means) for moving the border B and the main material M coming from the clamp feet 21 are held in the Nähgutvorschubrichtung F by the holding member 22 ,

The clamp feet 21 are each rectangular plates and are on the support member 22 held with their longitudinal directions parallel to the X-axis direction. The clamp feet 21 are held such that their plate surfaces are parallel to the XY plane. The clamp feet can be adjusted by driving the air cylinder at an upper position or at a lower position. If the clamp feet 21 are in the upper position, they are from the top of the sewing machine table 11 separated, and when the clamp feet 21 in the lower position, they are level with the top of the sewing machine table 11 , The two clamp feet 21 are arranged separately in the Y-axis direction, so that at least the upright plate part 32 the bordering device 30 can be introduced in between.

The holding member 22 is at the sewing machine table 11 held so that it is movable in the X-axis direction, and is arranged such that the two clamping feet 21 on an outside of a vertical trajectory of the two needles 41 move. The holding member 22 is from the press engine 23 driven by a ball screw mechanism (not shown).

(Eckmessermechanismus)

5 is a perspective view of the Eckmessermechanismen 100A . 100B . 6 is an enlarged perspective view showing a state in which Eckmesser 101 to 104 are provided, and 7A is an explanatory view showing an operation for selecting the corner knives 101 to 104 to be moved in the vertical direction. 5 shows a state in which two of the corner knives 101 to 104 from each of the corner knives mechanisms 100A . 100B are removed.

The two corner knife mechanisms 100A . 100B are under the sewing machine table 11 along a trajectory of the clamping feet 21 and in Nähgutvorschubrichtung F at the front of the central knife 51 arranged. A pair of corner knives pierce the border B and the main thread M, which is from the Klemmfußschub mechanism 20 can be supplied, from below, whereby the V-shaped corner notch is formed at each of the ends of the straight incision S.

The corner knife mechanisms 100A . 100B are arranged along the Nähgutvorschubrichtung F. The corner knife mechanism 100A is on the back of the corner mechanism 100B arranged in Nähgutvorschubrichtung F. In other words, the corner knife mechanism 100A forms the corner notch on the rear side of the straight cut S, and the corner cut mechanism 100B forms the corner cut at the front of the straight incision S. The corner knife mechanism 100B is in Nähgutvorschubrichtung F by means of a unit motion motor 90 (please refer 8th ) movable, so that the corner knife mechanism 100B with respect to the table 11 can be positioned. In the flowcharts shown in the figures, the two corner knife mechanisms can be used 100A . 100B to distinguish parts of the corner knife mechanism 100A as a "fixed side" and parts of the corner knife mechanism 100B be referred to as a "mobile page".

As the training of the Eckmessermechanismen 100A . 100B With respect to an intermediate YZ plane, they are substantially mirror-symmetrical to each other, the details become only for the corner-knife mechanism 100B specified. Parts of the corner knife mechanism 100A , which are mirror symmetric to those of the corner knife mechanism 100B are the same reference numbers and their description will be omitted.

The corner knife mechanism 100B includes: four corner knives 101 . 102 . 103 . 104 , a unitary body 105 who is attached to a pair of guide axes 14 each of which has the shape of a round bar and the one under the table 11 are arranged an index 106 with a block-shaped construction, around each of the corner knives 101 to 104 and on the inside of a concave part 105a held on a back surface of the unit body 105 is adapted to be movable in the Y-axis direction, an indexing mechanism 120 (a corner knife selection mechanism) that is operable around the index 106 to move in the Y-axis direction and the index 106 to position, and a vertical movement mechanism 130 which is operable to work in conjunction with the index movement mechanism 120 optionally the corner knives move up and down.

The unitary body 105 has the shape of a frame and is made by the pair of guide axes 14 held inserted at one end in the Y-axis direction through the unit body. The concave part 105a is on a back surface of the unit body 105 trained, and the index 106 is inside the concave part 105a arranged. Although the unitary body 105 of the corner knife mechanism 100A is held stationary, the unitary body 105 of the corner knife mechanism 100B be placed at an arbitrary position in the X-axis direction, by the driving operation of the unit motion motor 90 by means of a belt feed mechanism (not shown) or a ball screw mechanism. The unit motor 90 can be a linear motor.

Two upper and lower handrails 106a are at the index 106 fixed in place and run starting from a side surface of the index 106 in the X-axis direction. The handrails 106a are inserted through respective insertion openings provided on the unit body 105 are provided so that the index 106 is held so as to be in the Y-axis direction with respect to the unit body 105 is mobile.

Four corner knife attachment base bodies 107 . 108 . 109 . 110 are at a top of the index 106 arranged to the respective corner knives 101 to 104 to be independent. The mounting base body 107 to 110 can be adjusted by loosening or tightening a fixing screw (not shown) to an angle of each corner knife 101 to 104 to adjust around the Z-axis and adjust an angle of inclination to which a blade tip of each corner knife 101 to 104 shows. For every corner knife 101 to 104 That is, an angle at which the corner cut part is to be formed with respect to the straight cut S is determined by adjusting the angle around the Z axis, and a length of the corner cut part to be formed is determined by adjusting the tilt angle to which the blade tip points ,

An example of an arrangement of the Eckmesser 101 to 104 , seen from above, is related to 7B described. Two corner knives 101 . 102 on the right side, the corner cut portions on the right side of the straight cut S are formed and both are turned to the right from the front direction. The corner knife 102 is inclined so that the length of the trapezoidal corner portion longer than the Eckmesser 101 becomes. Widths h1, h2 of the corner recess parts to be formed by the respective corner knives are set to be equal to each other in the Y-axis direction.

Two corner knives 103 . 104 on the left side, the corner knife parts on the left side of the straight line cut S are formed, and they are both turned to the left from the front side direction. The corner knife 104 is inclined or tilted so that the length of the trapezoidal corner portion is longer than the Eckmesser 103 , Width h1, h2 of the respective corner knives 103 . 104 to be formed corner cut parts are set so that they are equal to each other in the Y-axis direction.

Each of the mounting base bodies 107 to 110 has a sliding axis (not shown) which extends downwardly in the Z-axis direction. The sliding axis is relative to the index 106 slidable, so that each of the mounting base body 107 to 110 is held so that it is in the vertical direction with respect to the index 106 is mobile. Up-down console 107a to 110a (Engagement projections) projecting toward the front are formed at lower end portions of the respective slide axes. Each of the up-down consoles 107a to 110a extends to the front of a front surface of the index 106 out. The vertical movement mechanism 130 moves the corner knives 101 to 104 on the up-down consoles 107a to 110a ,

The index movement mechanism 120 includes: an index motor 121 (a positioning motor) fixed above the unit body 105 is provided, a screw 122 passing through the index engine 121 is rotatable, and a moving member 123 , which uses a ball screw to the screw spindle 122 is coupled.

The screw spindle 122 is at the top of the unit body 105 is rotatably supported along the Y-axis direction and has an end which is connected to an output shaft of the indexing motor 121 is coupled via a coupling.

The movement member 123 is through an arm part 106b held, starting from an end portion of the index 106 extends out. When the screw spindle 122 from the index engine 121 is rotated, therefore receives the moving member 123 a motive force in the longitudinal direction of the screw spindle 122 that is, in the Y-axis direction, by the ball screw mechanism, so that the index 106 is moved in the Y-axis direction.

The index 106 becomes in the Y-axis direction by the index movement mechanism 120 moves when the pair of corner knives, by the vertical movement mechanism 130 to be moved vertically, out of the corner knives 101 to 104 is selected, and it is also moved when a position is set at which the corner cut parts are to be formed by the selected corner knives in the Y-axis direction.

The vertical movement mechanism 130 includes: a first air cylinder 131 for moving the corner knife upward to form the corner notch on the right side of the rectilinear sipe S, a second air cylinder 132 for moving the corner knife upward to form the corner cut-in portion on the left side of the straight line cut S, and cylinder consoles 133 . 134 at respective output axes of the air cylinder 131 . 132 are provided. Each of the cylinder consoles 133 . 134 is optional with one of the up-down consoles 107a to 110a engageable.

The air cylinder 131 . 132 are at the unitary body 105 provided such that their operating directions are parallel to the Z-axis direction.

Every cylinder console 133 . 134 has the shape of a hand drum. More in detail: Each cylinder console 133 . 134 has a pair of flanges and an intermediate part of smaller diameter therebetween. The cylinder consoles 133 . 134 are at the output axes of a corresponding one of the air cylinder 131 . 132 arranged such that their axial center lines extend along the Z-axis direction. The air cylinder 131 . 132 and the cylinder consoles 133 . 134 are with respect to the unitary body 105 positioned so that when the index 106 moved in the Y-axis direction, front end portions of the up-down consoles 107a to 110a between the flanges of the cylinder consoles 133 . 134 pass through.

More in detail: If the index 106 in the Y-axis direction, the up-down consoles pass 107a to 110a through the flanges of the respective cylinder consoles 133 . 134 in a certain order. The index engine 121 the index movement mechanism 120 is controlled so that the up-down console corresponding to the Eckmesser that is to be operated, between the flanges of one of the cylinder consoles 133 . 134 is stopped so that the up-down console can engage with the cylinder console, thereby the operating corner blade by driving one of the first or the second air cylinder 131 . 132 can be moved up and down.

An optical index sensor 111 (please refer 8th ) is at a bottom of the unit body 105 arranged. The optical index sensor 111 is operational to four positions of the index 106 to recognize, namely (1) a position in which the up-down console 107a of the corner knife 101 in engagement with the cylinder console 133 can be brought, (2) a position in which the up-down console 108a of the Indian knife 102 in engagement with the cylinder console 133 can be brought, (3) a position in which the up-down console 109a of the corner knife 103 in engagement with the cylinder console 134 can be brought, and (4) a position in which the up-down console 110a of the corner knife 104 in engagement with the cylinder console 134 can be brought. The position of the index 106 is in accordance with these detections by the optical index sensor 111 controlled. In the following description, a position of each of the corner knives becomes 101 to 104 according to the respective positions ( 1 ) to (4) of the index 106 as an operational position.

As in 7C shown, has an area in which each of the cylinder consoles 133 . 134 and a corresponding one of the up-down consoles 107a to 110a overlap, a certain width in the Y direction. Therefore, an engagement state of one of the corresponding up-down consoles 107a to 110a even be sustained if a corresponding one of the up-down consoles 107a to 110a slightly in the Y direction with respect to the cylinder consoles 133 . 134 is moved. Thus, a cutting position of each corner knife 101 to 104 adjustable in the Y direction within the range in which the engagement state can be maintained.

(Control system of the barrel machine)

8th is a block diagram showing a control system including the operation control means 80 the binding machine 10 ,

Display input means 85 for displaying drawing and image information and for entering various settings, and a start switch 87 for inputting a sewing start instruction are via an input / output circuit (not shown) with the operation control means 80 coupled. Furthermore, an encoder 88 for detecting the number of rotations of the main shaft motor 45 to the operation control means 80 via an input circuit 88a coupled, so that a determination of a rotation angle of the main shaft motor 45 from a predetermined origin and a rotational speed of the main shaft motor 45 is possible.

The main shaft motor 45 , the press engine 23 , the knife motor 57 , the unit motor 90 and the index engine 121 are to the operation control means 80 via respective drivers 45a . 23a . 57a . 90a . 121 coupled and are by the operation control means 80 controlled.

Further, an electromagnetic valve (not shown) operable to move the air cylinder for moving the enclosure 30 in the vertical direction, and another electromagnetic valve (not shown) operable to move the air cylinder to move the clamp feet 21 in the vertical direction, to the operation control means 80 connected via respective drivers. Similarly, an electromagnetic valve 70 of the air cylinder 65 for switching an operating state and a non-operating state of the cent ralmessers 51 , electromagnetic valves 135 . 136 the first and second air cylinder 131 . 132 for moving the corner knives in the vertical direction and an electromagnetic valve 89 operable to drive a knife driving cylinder (not shown) for driving a thread cutting knife via respective drivers 70a . 135a . 136a . 89a connected.

Furthermore, the index sensor 111 to the operation control means 80 via an input circuit 111 coupled.

Furthermore, the Nadelumschaltelektroomagnet 43 to the operation control means 80 via a driver 43a connected.

Although there are two corner knife mechanisms, shows 8th merely the configuration of one of the corner knife mechanisms, and the configuration of the other corner knife mechanism is omitted.

The operation control means 80 include: a CPU 81 which is operable to execute various processes and controls, a ROM 82 in which a setting input program for entering the operation of various settings of the binding machine 10 and an operation control program for executing an operation control of the binding machine 10 are stored, a RAM 83 which acts as a workspace for storing various data during the working process of the CPU 81 serves, and an EEPROM 71 for storing sewing data and various setting data.

(Posts responsible for the operation control of a single-frame operation)

9 is a table showing different items to be set. Each of the items is previously owned by the display input 85 in the operation control means 80 eingege to complete the bounding operation. A display control of the display input means 85 and a data input process during the setting operation are executed in accordance with the setting input program. Contents of the set items are stored as a series of sewing data in the EEPROM in accordance with the setting input program.

Everyone the item to be set is described below.

"Attitude the dimension L "denotes setting the stitch pattern length the straight seams TL, TR.

In a case where the lengths of the left and right straight seams TL, TR are equal to each other, the dimension L is the length of each of the straight seams TL, TR. In cases where the lengths of the left and right straight seams TL, TR are different from each other as in FIG 10A to 10D shown, recognize the operation control means 80 the dimension L as the length of the longer seam.

"Direction Selection of Stitch Image Starting Deviation" refers to whether the right linear seam TR and the right corner incision part VFR on the front side instead of the left rectilinear seam TL and the left corner incision part VFL are to be shifted in the front part of the insert part, whether the left straight seam TL and the left corner recess part VFR on the front side should be shifted in place of the right straight seam TR and the right corner recess part VFL, or the front ends of the left and right seams TL, TR should be aligned with respect to a direction perpendicular to the fabric advancing direction F. The " deviation " on each of the front and back sides of the insert part means a distance (CF or CR) in the cloth feed direction F from the end of one of the straight seams and extending to an outer side toward the end of the other straight seam on an inner side (please refer 2 ).

11 shows a setting input screen (1) passing through the display input means 85 is pictured. The "direction selection of stitch pattern start deviation" is input from select buttons W1, W2.

"Stitch pattern start deviation amount" means setting of a shift amount in cloth feed direction F in the front part of the insert part between the left and right straight seams TL, TR, that is, a shift amount between the left and right corner cut parts VFL, VFR. The stitch pattern start deviation amount is inputted from an increase / decrease knob W3 in the setting input screen (1), which is shown in FIG 11 is shown.

"Direction Selection of Stitch Final Deviation" means a setting in the rear side part of the insert part as to whether the right straight seam TR and the right corner cut part VRR are to be shifted on the front side instead of the left straight seam TL and the left corner cut part VRL, whether the left straight one Seam TL and the left corner incision part VRL on the front side instead of the right straight seam TR and the right corner incision part VRR are to be shifted, or whether the front ends of the left and right seams TL, TR are aligned with respect to a direction perpendicular to the material advancing direction F. should. The direction selection of a stitch end deviation is inputted from selection buttons W4, W5 in the setting input screen (1), which is shown in FIG 11 is shown.

"Engraving end deviation amount" means setting a shift amount in the cloth feed direction in the rear side part of the insert part between the left and right straight seams TL, TR, that is, a shift amount between the left and right corner cut parts VRL, VRR. The "stitch end-deviation amount" is determined by an increase / decrease button W6 in the setting input screen (1) included in FIG 11 is shown entered.

The items: "Direction Selection of Stitch Image Start Deviation", "Stitch Image Start Deviation Amount", "Stitch Selection of Stroke End Deviation" and "Stitch End Deviation Amount" correspond to "information regarding the deviations in the cloth advancing direction of the ends of the two opposed straight line seams with the straight line cut therebetween". By their adjustment and input, the display input means function 85 as a "deviation adjusting means".

"Stitch-forming startup setting left-sided width for corner knives "denotes a setting a distance in the Y-axis direction in the front part of the peripheral part from the left side straight line TL to the left end of the left side Corner incision part VFL.

12 shows a setting input screen (2) passing through the display input means 85 is pictured. The stitch setting start setting left-side width for corner knives is input from an increase / decrease button W7.

"Stitch pattern start setting right side pulp "Corner Knife" refers to setting, in the front side part of the skirt portion, a distance in the Y-axis direction from the right-side straight seam TR to the right end of the right-side corner cut part VFR Adjustment screen (2), which in 12 is shown entered.

The "Stichbildeendeinstellen left-sided width for Eckmesser" denotes a setting on the back part of the Shutter, a distance in the Y-axis direction starting from the left side straight seam TL to the left end of the left side Corner cut part.

13 Fig. 10 shows a setting input screen (3) which is provided by the display input 85 is pictured. The "stitch end setting left side width for corner knives" is input from an increase / decrease button W9.

The "stitch end setting right-side width for corner knives" in the rear side part of the insert part means setting a distance in the Y-axis direction from the right side straight seam TR to the right end of the right side corner cut part. The "stitch end setting right side width for corner knives" is determined by an increase / decrease button W10 in the adjustment input screen (3), which is shown in FIG 13 is shown entered.

The display input means 85 , of which "stitch pattern start setting left-side width for corner knives", "stitch pattern start setting right-side width for corner knives", "stitch end set left-side width for corner knives" and "stitch end set right-side width for corner knives" are inputted as a distance input means for inputting a distance between an end part each of the corner cut portions on a side of a corresponding one of the straight seams and a corresponding one of the straight seams in a direction perpendicular to the cloth feed direction F.

"To adjust the central knife operating position "is a setting item a cutting start position and a cutting end position of the central knife.

As in 14A 1, the cutting start position of the center knife is set by inputting a clearance on the front side part of the border, starting from the end of the straight seam on the outside to the end of the straight cut in the cloth feed direction.

As in 14B 11, the cutting end position of the center knife is set by inputting a pitch in the back part of the insert part from the end of the straight seam on the outside to the end of the straight cut in the cloth feed direction.

Both the cutting start position as well as the cutting end position of the

Central knife can be entered from increase / decrease buttons W11, W12, which are located on an in 15 reproduced adjustment screen (4) are shown.

The operation control means 80 the binding machine 10 perform an operation control to the corner knives 101 . 103 normally having small cutting lengths (if the deviation is equal to or less than a threshold including a case where the deviation is zero) and automatically the corner knives 102 . 104 which have large cutting lengths if the deviation is greater than the threshold. The base part of the outer corner cut part and the end of the straight cut are basically caused to be coincident with each other (exceptionally, they may be set to be shifted from each other by a desired length in some cases). If therefore the corner knives 102 . 104 have longer lengths than those normally selected, the base part of the outer corner cut part is not coincident with the position of the end of the straight cut when the adjustment of the central blade operating position is made on the assumption that the normal corner knives 101 . 103 to be used.

Therefore, in a case where the stitch image start deviation amount and the stitch image end deviation amount are set after the cutting start position and the cutting end position of the central knife are set, the CPU refers 81 the operation control means 80 to the values of the deviation amounts. If the deviation amount is equal to or smaller than the threshold value (for example, 4 mm in the barrel machine 10 ), the cutting start position and the cutting end position become in the EEPROM 71 from the increase / decrease buttons W11, W12 of the in 15 set adjustment screen (4) are maintained maintained.

If the value of the amount of deviation exceeds the threshold, a value obtained by subtracting the corner cut length of the normal corner knives 101 . 103 in the Nähgutvorschubrichtung of the corner cut length of the longer Eckmesser 102 . 104 in the Nähgutvorschubrichtung (for example, 11 - 7 = 4 mm), the cutting start position and the cutting end position in the EEPROM 71 added by the increase / decrease buttons W11, W12 of the in 15 shown adjustment input screen 4 are adjusted to correct the cutting start position and the cutting end position. The corrected cutting start and cutting end positions are in the EEPROM 71 saved.

Therefore, when the setting screen for "setting the central blade operating position" is retrieved after execution of the correction, a setting input screen (5), which is shown in FIG 16 instead of the adjustment input screen (4) as shown in FIG 15 is reproduced, brought to the presentation. On the adjustment input screen (5), for example, when 7 mm is set in the adjustment input screen (4), the corrected value of 11 mm is displayed, and a balloon indicating that the correction is executed is displayed.

In a case where the stitch pattern start deviation amount and the stitch image end deviation amount are set before the setting of the cutting start position and the cutting end position of the central knife operating position, it is judged whether the set deviation amount exceeds the threshold value or not when the central knife operating positions are set, and further the in 15 shown adjustment input screen (4) shown when the set deviation amount is equal to or smaller than the threshold, and the in 16 The adjustment input screen (5) shown is displayed when the set deviation amount exceeds the threshold value. In a case where the adjustment input screen (4) of 15 is shown, a value equal to the cutting length of the normally used Eckmesser 101 . 103 in the cloth feed direction (for example, 7 mm in the embodiment) is shown as an error value of the cutting start position and the cutting end position of the center knife. In a case where the adjustment input screen (5) as shown in FIG 16 is shown, a value equal to the cutting length of the long Eckmessers 102 . 104 in the cloth feed direction (for example, 11 mm in the embodiment) as an error value of the cutting start position and the cutting end position of the center knife.

In addition to the items described above, the cutting lengths become the corner knives 101 to 104 entered and set in the Nähgutvorschubrichtung. In the exemplary embodiment, the cutting lengths of the shorter Eckmesser 101 . 103 in the Nähgutschubschub adjusted so that they in each of the Eckmessermechanismen 100A . 100B have an equal length D _S (for example 7 mm), the cutting lengths of the longer corner knives 102 . 104 in the material feed direction are set to be in each of the corner knives mechanisms 100A . 100B have an equal length D _L (for example, 11 mm).

(Operation Control of a Boundary Operation)

17 to 19 FIG. 4 are flowcharts showing a rim operation control, and 20 to 23 4 are explanatory views showing a positional relationship between the corner knife mechanisms 100A . 100B while the corner cuts are formed. Although each of the 20 to 23 an arrangement of Eckmessermechanismen 100A . 100B When viewed in front view, the border B and the main crop M are shown in plan view to clarify a corresponding relationship.

All processes shown in the flowcharts are handled by the CPU 81 executed in accordance with the operation control program. The bounding operation control will be described below.

First of all, the CPU reads 81 the sewing data sent from the display input means 85 are entered and set (step S1).

Next, a stitching operation in accordance with the sewing data is started (step S2). More in detail: the clamp feet 21 are moved down to hold the main supply M on the table 11 near the needles 41 is set in a predetermined rear position, and they move the Hauptnähgut M to another predetermined position. Then the Einfassfleck B on the clamp feet 21 applied, and the binding device 30 holds the border B from above. The folding plates attached to the respective clamping feet 21 are attached, become the bordering device 30 moved so that the respective side parts of the border B on the surface side of the bordering device 30 folded down.

The clamp feet 21 begin the forward movement by the drive operation of the press engine 23 and push the sewing material (that is, the main sewing material M and the binding spot B) to the needles 41 out in front.

Then the CPU starts 81 the drive operation of the main shaft motor 45 and performs the operation control of the needle switchover solenoid 43 such that, in accordance with the setting of the "direction selection of stitch pattern start deviation", the two needles 41 Begin the stitching at the same time, or it starts one of the needles 41 with the stitch formation. If the "stitch pattern start deviation amount" is set, it will cause Beyond the Nadelumschaltelektromagnet 43 the operation control such that the subsequent needle 41 at a time when stitching starts at which the cloth is fed by the stitch pattern starting deviation amount.

Then the CPU starts 81 via the electromagnetic valve 70 a vertical movement of the central knife 51 to start the formation of the straight line cut S at a position at the rear side of the front end part of the outer seam TL (or TR) by the distance set in accordance with the "setting of the central blade operating position". As described above, when the "stitch pattern start deviation amount" is equal to or smaller than the threshold value of 4 mm, the corner blade is selected to form the outer corner blade cut portion VFL (or VFR) having a smaller cut length. When the "stitch pattern start deviation amount" exceeds 4 mm, the corner knife for forming the outer corner cut-in portion having a longer cut length is selected. The linear incision S is started to be in accordance with the "setting of the central blade operating position" which is set to correspond to the "stitch pattern starting deviation amount".

The "outer side" or "outer" refers to the Seam that extends to the front, starting from the another seam in the front part of the sewing area, and designated the seam that extends to the back, as the another seam in the back part of the sewing area.

The CPU 81 performs the operation control of the needle switching electromagnet 43 in accordance with the "dimension setting L", the "stitch pattern start deviation direction selection" and the "stitch end deviation amount", and stops the driving operation of the main shaft motor 45 to finish the formation of the respective seams TL, TR.

The CPU 81 leads through the electromagnetic valve 70 an operation control for stopping the vertical movement of the central knife 51 to terminate the formation of the straight line incision at a position on the front side of the front end portion of the outside seam TL (or TR) by the distance set in accordance with the "setting the central blade operating position". As described above, when the "adjustment deviation amount" is equal to or smaller than the threshold of 4 mm, the corner cutter is selected to form the outer corner recess part VRL (or VRR) having the smaller incision length. When the "stitch end deviation amount" exceeds 4 mm, the corner knife for forming the outer corner cut part VRL (or VRR) having a longer cut length is selected. The formation of the straight line incision S is completed in accordance with the "setting of the central blade operating position" which is set to correspond to the "stitch end deviation amount". At this time, the seams TL, TR and the straight cut S are completely formed.

As the seams TL, TR and the straight line cut S are formed, the CPU moves 81 , to a central position in the Y-axis direction, the index 106 of the corner knife mechanism 100A which is fixed with respect to the Nähgutvorschubrichtung (step S3). If the index 106 At the central position, the up-down consoles become 107a . 109a the inner corner knife 101 . 103 with the cylinder consoles 133 respectively 134 engaged.

As the seams TL, TR and the straight line cut S are formed, the CPU moves 81 furthermore, to a center position in the Y-axis direction, the index 106 of the corner knife mechanism 100B which is movable in the cloth feed direction (step S4).

While the seams TL, TR and the straight line cut S are formed, the CPU controls 81 continue the unitary motor 90 to the corner knife mechanism 100B in the fabric feed direction with respect to the corner knife mechanism 100A to move forward to the corner knife mechanism 100B to be positioned at a position where the corner cut-in portion is first formed (step S5).

A method of calculating the moving distance of the corner knife mechanism 100B in the CPU 81 will be in detail with reference to 20 and 21 described. 20 shows a state just after the seams are formed, and 21 shows a state in which the Eckmessermechanismus 100B is moved to the position at which the corner cut part is formed first.

Both corner knives mechanisms 100A . 100B The inner corner recessed parts form earlier than the outer corner recessed parts. Accordingly, a movement distance Y1 of the corner knife mechanism 100B in step S5, equal to a distance from the base part of the inner corner recess part on the front side to that of the inner corner recess part on the back side. The movement distance Y1 of the corner knife mechanism 100B can be obtained by the following equation (1): Y1 = A - CF - CR - 2D (1) wherein the stitch pattern start deviation amount by CF, the stitch endend deviation amount by CR and the cut length of each of the corner knives in the cloth feed direction are represented by D, and an entire length of the stitch forming area is represented by A.

The stitch forming area A is equal to the dimension L set in "setting the dimension L" (A = L) when both the front and rear end parts of one of the straight seams are on the inside (a case where a bag opening part has the shape has a shell). When the front end part of one of the rectilinear seams is on the inner side and the rear end part of the other rectilinear seam is on the inner side (a case in which the pocket opening has the shape of a parallelogram), the stitching area A is given a length (A = L + CF or A = L + CR) obtained by adding the shorter deviation to the dimension L set in "setting the dimension L" (the sewing length of the longer rectilinear seam). The CPU 81 wins the value of A by the above calculation.

When the position of each corner knife mechanism 100A . 100B is determined, and the straight line S and the seams TL, TR are completely formed (step S6), pushes the CPU 81 the sewing materials B, M starting from an in 20 shown position to a in 21 shown position (that is, a cutting position of the Eckmessermechanismus 100A ), by driving the press engine 23 (Step S7).

Then the CPU decides 81 Whether or not the deviation on the rear sides must be provided in accordance with the setting of the "stitch end-deviation amount" (step S8).

If it is set that the deviation does not have to be provided, the CPU reads 81 the set value of "setting the stitch pattern the right-hand width for corner knives" to the index motor 121 of the corner knife mechanism 100A and adjust the position of the index 106 in the Y-axis direction in accordance with the set value (see 24 ). Then the CPU drives 81 the first air cylinder 131 via the electromagnetic valve 135 to the corner knife 101 to move upward, whereby the right corner recess part is formed on the back (step S9).

The CPU continues to read 81 the set value of "setting the stitch end left side width for corner knives" to the index motor 121 of the corner knife mechanism 100a and adjust the position of the index 106 in the Y-axis direction in accordance with the set value. Then the CPU drives 81 the second air cylinder 132 via the electromagnetic valve 135 to the corner knife 103 to move upward, whereby the left corner recess part is formed on the back (step S10). Thereafter, the process proceeds to step S14.

On the other hand, if it is set that the deviation is to be provided, the CPU decides 81 which is the left and right seams on the outside, based on the setting of the "stitch end deviation deviation direction selection" (step S11). If the CPU 81 performs the process of step S11, the CPU functions 81 as "corner incision part inside / outside decision means for judging whether each of the corner cut parts to be formed from each of the adjacent end parts of the straight seam to the straight line incision, on the inside or on the outside with respect to the center of the rectilinear Incision in the Nähgutvorschubrichtung is ".

When the left corner cut-in part is to be provided on the outside, a cut-in operation is made for the right corner cut-in part on the inside, in front of the left corner cut-in part. More in detail: the CPU 81 reads the set value of "Setting the stitch image end right-side width for corner knives" to the index motor 121 of the corner knife mechanism 100A and adjust the position of the index 106 in the Y-axis direction in accordance with the set value (see 24 ). Then the CPU drives 81 the first air cylinder 131 via the electromagnetic valve 135 to the corner knife 101 to move upward, whereby the right corner cut part is formed on the rear side (step S12). The process then proceeds to step S14.

When the right corner cut part is to be provided on the outer side, the cutting operation for the left corner cut part on the inner side is performed in front of the right corner cut part. More in detail: the CPU 81 reads the set value of "setting the stitch end left-side width for corner knives" to the index motor 121 of the corner knife mechanism 100A and sets the position of the index 106 in the Y-axis direction in accordance with the set value (see 24 ). Then the CPU drives 81 the second air cylinder 132 via the electromagnetic valve 135 to that Eckmesser 103 to move upward, whereby the left corner recess part on the rear side is executed (step S13). This is where the process starts Step S14 on.

If the CPU 81 performs the processes of steps S9, S10, S12 and S13, the CPU functions 81 as "control means operable to drive the positioning motor (ie the index motor 121 ) so as to be controlled with respect to that by the vertical movement mechanism 130 in the vertical direction to be moved corner knives, a distance between an end portion of the corner blade on one side of the rectilinear incision and the straight incision in the Y-axis direction is equal to the distance which is set by the Abstandeinstellmittel.

Then the CPU decides 81 Whether or not the deviation on the front side part should be provided in accordance with the setting of the "stitch pattern start deviation amount" (step S14).

If it is set that the deviation should not be provided, the CPU reads 81 the set value of "stitch pattern start right-sided width for corner knives" to the index motor 121 of the corner knife mechanism 100B and sets the position of the index 106 in the Y-axis direction in accordance with the set value (see 24 ). Then the CPU drives 81 the first air cylinder 131 via the electromagnetic valve 135 to move the corner knife upward, thereby forming the right corner recess part on the front side (step S15).

The CPU continues to read 81 the set value of the "stitch pattern start setting left side width for corner knives" to the index motor 121 of the corner knife mechanism 100B and adjust the position of the index 106 in the Y-axis direction in accordance with the set value (see 24 ). Then the CPU drives 81 the second air cylinder 132 via the electromagnetic valve 135 to the corner knife 103 to move upward, whereby the left Eckmessereinschnittteil formed on the front side (step S16). Thereafter, the process proceeds to step S20.

On the other hand, if it is set that the deviation is to be provided, the CPU decides 81 which is to be provided on the outside of the left and right seams based on the setting of the "stitch pattern start deviation deviation direction selection" (step S17). If the CPU 81 performs the process of step S17, the CPU functions 81 as "corner incision part inside / outside decision means for deciding whether each of the corner cut-in parts to be formed from each of the adjacent end parts of the straight seam to the straight cut, on the inside or on the outside with respect to the center of the rectilinear incision in the Nähgutvorschubrichtung ".

When the left corner recess part is to be provided on the outside, a cutting operation is performed for the right corner recess part on the inside in front of the left corner recess part. More in detail: the CPU 81 reads the set value of "stitch pattern start right-sided width for corner knives" around the index motor 121 of the corner knife mechanism 100B and adjust the position of the index 106 in the Y-axis direction in accordance with the set value (see 24 ), the first air cylinder 131 is via the electromagnetic valve 135 driven to the corner knife 101 to move upward, thereby forming the right corner cut part on the front side (step S18). Thereafter, the process proceeds to step S20.

Further, when the right corner notch is to be provided on the outer side, the cutting operation for the left corner notch part is performed on the inside in front of the right corner cut part. More in detail: the CPU 81 reads the set value of "stitch pattern start setting left side width for corner knives" to the index motor 121 of the corner knife mechanism 100B and adjust the position of the index 106 in the Y-axis direction in accordance with the set value (see 24 ). Then the CPU drives 81 the second air cylinder 132 via the electromagnetic valve 135 to the corner knife 103 to be upward, whereby the left corner cut-in part on the front side is formed (step S19). Thereafter, the process proceeds to step S20.

If the CPU 81 performs the operations of steps S15, S16, S18 and S19, the CPU functions 81 as "control means operable to drive the positioning motor (ie the index motor 121 ) so as to be controlled with respect to that by the vertical movement mechanism 130 in the vertical direction to be moved corner knives, a distance between an end portion of the corner blade on one side of the straight incision and the straight incision in the Y-axis direction is equal to the distance which is set by the Abstandseinstellmitteln.

In step S20, the CPU decides 81 again, whether or not the deviation should be provided on the back panel in accordance with the setting of the "stitch endend deviation amount".

If is set that the deviation should not be provided, the process proceeds to step S27.

When it is set that the deviation is to be provided at the rear side part, it is decided whether or not the "stitch endend deviation amount" is larger than the threshold value of 4 mm (step S21). If the CPU 81 performs the process of step S21, the CPU functions 81 as "deviation decision means for decision, based on the information concerning the deviation set by the deviation setting means, whether the deviation exceeds the threshold value or not".

If the "stitch end-deviation amount" is equal to or smaller than 4 mm, the process proceeds to step S23. If the "stitch endend deviation amount" is larger than 4mm, the CPU drives 81 the index 106 of the corner knife mechanism 100A in the Y-axis direction to set the corner knife with a larger cutting length to an operating position (step S22). The corner knife 104 is selected when the step S12 is executed while the Eckmesser 102 is selected when step S13 is performed.

In step S23, the sewing materials M, T are conveyed by the press motor 23 the Klemmfußvorschubmechanismus 20 advanced, as in 22 shown to the corner knife of the corner knife mechanism 100A to place in a position in which the outer corner cut-in part is to be formed on the rear side part. If the shorter corner knife 101 . 103 is to be used, a feed distance Y2 of the sewing materials M, T is coincident with the stitching end deviation amount CR, that is, Y2 = CR. If the longer corner knife 102 . 104 is to be used, Y2 = CR - (D _L - D _S ).

Then the CPU decides 81 again, which of the left and right seams is on the outer side based on the setting of "setting the stitch end-deviation" (step S24). If the CPU 81 performs the process of step S24, the CPU functions 81 as " corner cut part inner / outer side decision means for deciding which of the corner cut parts to be formed from each of the adjacent end parts of the straight seam to the straight line cut, on the inner side or on the outer side with respect to the center of the straight incision in the Nähgutvorschubrichtung is ".

When the left corner cut-in part is to be provided on the outside, the cut-in operation for the left corner cut is carried out. More in detail: the CPU 81 reads the set value of the "stitch width finisher left-side width for corner knives" to the index motor 121 of the corner knife mechanism 100A and sets the position of the index 106 in the Y-axis direction in accordance with the set value (see 24 ). Then the CPU drives 81 the second air cylinder 132 via the electromagnetic valve 135 to the corner knives 103 . 104 to move upward, whereby the left corner recess part is formed on the rear side (step S25). The process then proceeds to step S27).

If the right corner notch part is to be provided on the outer side, the incision process for the right corner cut is performed. More in detail: the CPU 81 reads the set value of the "stitch end setting right side width for corner knives" to the index motor 121 of the corner knife mechanism 100A and sets the position of the index 106 in the Y-axis direction in accordance with the set value (see 24 ). Then the CPU drives 81 the first air cylinder 131 via the electromagnetic valve 135 to the corner knife 101 or 102 to move upward, whereby the right corner cut part is formed on the rear side (step S26). The process then proceeds to step S27.

If the CPU 81 performs the operations of step S25 and step S26, the CPU functions 81 as "control means operable to drive the positioning motor (ie the index motor 121 ) so as to be controlled with respect to that by the vertical movement mechanism 130 in the vertical direction to be moved corner knives, a distance between an end portion of the corner blade on one side of the straight incision and the straight incision in the Y-axis direction becomes equal to the distance set by the distance input means.

In step S27, the CPU decides 81 again, whether or not the deviation on the front side part should be provided in accordance with the setting of the "stitch pattern start deviation amount".

If is determined that the deviation should not be provided, the process proceeds to step S34.

When it is set that the deviation is to be provided on the front side part, it is decided whether or not the "stitch pattern start deviation amount" is larger than the threshold value of 4 mm (step S28). If the CPU 81 performs the process of step S28, the CPU functions 81 as "deviation decision means for decision, based on the information regarding the set deviation set by the deviation setting means, whether the deviation exceeds the threshold value or not".

If the "stitch pattern start deviation amount" is equal to or smaller than 4 mm, the operation proceeds to step S30. If the "stitch pattern start deviation amount" is larger than 4mm, the CPU drives 81 the index 106 of the corner knife mechanism 100B in the Y-axis direction to set the corner knife with a larger cutting length to an operating position (step S29). The corner knife 104 is selected when step S18 is performed while the Eckmesser 102 selected when step S19 is performed.

In step S30, the corner knife mechanism becomes 100B from the unit motion motor 90 , as in 22 shown moved to the corner knife of the corner knife mechanism 100B to be placed in a position in which the outer corner cut-in part is formed on the front side part. If the short corner knife 101 . 103 is used, is a movement distance Y3 of the Eckmessermechanismus 100B coincident with a distance obtained by adding the stitch pattern start deviation amount CF to the feed amount Y2 of the cloth, that is, Y3 = Y2 + CF. If the long corner knife 102 . 104 is used, Y3 = Y2 + CF (D _L - D _S ).

Then the CPU decides 81 which of the left and right seams should be provided on an outer side, that is, which of the seams is longer, based on the setting of the "sewing start deviation deviation direction setting" (step S31). If the CPU 81 performs the process of step S31, the CPU functions 81 as "corner incision part inside / outside decision means for judging whether each of the corner cut portions to be formed from each of the adjacent end parts of the straight seam to the straight cut, on the inside or on the outside with respect to the center of the straight line Incision in the material feed direction is ".

When the left corner cut-in part is to be provided on the outer side, the cut-in operation for the left corner cut is carried out. More in detail: the CPU 81 reads the set value of "stitch pattern start setting left-side width for corner knives" to the index motor 121 of the corner knife mechanism 100B and she sets the position of the index 106 in the Y-axis direction in accordance with the set value (see 24 ). Then the CPU drives 81 the second air cylinder 132 via the electromagnetic valve 132 to the corner knife 103 or 104 to move upward, whereby the left corner recess part on the front side is formed (see 23 : Step S32). The process then proceeds to step S34.

When the right corner cutting part is to be provided on the outer side, the cutting process for the right corner knife cutting is performed. More in detail: the CPU 81 reads the set value of the "stitch setting right-sided width for corner knives" to the index motor 121 of the corner knife mechanism 100B and sets the position of the index 106 in the Y-axis direction in accordance with the set value (see 24 ). Then the CPU drives 81 the first air cylinder 131 via the electromagnetic valve 136 to the corner knife 101 or 102 to move upward, whereby the right corner recess part on the front side is formed (see 23 : Step S33). Thereafter, the process proceeds to step S34.

If the CPU 81 performs the operations of steps S32 and S33, the CPU functions 81 as "control means operable to drive the position motor (ie the index motor 121 ) so as to be controlled with respect to that of the vertical movement mechanism 130 in the vertical direction, to be moved corner knives, a distance between an end portion of the corner knife on one side of the rectilinear incision and the rectilinear incision in the Y-axis direction becomes equal to the distance set by the distance adjusting means.

In step S34, the index becomes 106 every corner knife mechanism 100A . 100B returned to the central position, and the corner knife mechanism 100B is moved to a starting position.

Then, the clamp foot feed mechanism moves 20 the clamp foot 21 , whereby the binding operation is completed (step S35).

(Advantageous effects of the binding machine according to the embodiment)

If the set deviation amount is larger than the threshold value (4 mm in the embodiment), the operation control means selects 80 the binding machine 10 in accordance with the setting input routine, the corner knife 102 . 104 with a larger cutting length than that of the corner knife 101 . 103 which is usually to be used as a corner knife on an outside (the corner knife to be used when the deviation amount is equal to or smaller than the threshold value). As a result, a set standard value (an error value) of the "central knife operating position setting" which defines the cut length of the straight line cut can be switched to a value corresponding to the larger cut length corner knife (for example, 7 mm when the normal corner knife is used and 11 mm when using the larger corner knife).

Thus, when the sewing is performed after the settings are made in accordance with the setting program, the CPU functions 81 the operation control means 80 as a "control means that is operational to the knife motor 57 and the Nähgutvorschubmechanismus 20 such that the straight line incision S is formed from an end portion of one of the outer corner cut portions on one side of the straight cut S (ie, the base portion) to an end portion of the other of the outer corner cut portions on the straight cut portion (the is the base position) ".

As described above, when the set amount of deviation exceeds the threshold, the large corner knives become 102 . 104 automatically set to be used for the outer corner knife in accordance with the setting / entry routine, and the corner knife cutting parts are used by the large corner knives 102 . 104 trained, in accordance with the operation control program. Further, in accordance with the operation control program, the operation control is performed such that the straight line incision S is performed from the base part of the outer corner cut-in part at one of the end parts of the sewing area to that of the outer corner cut-in part at the other end part. As in 25 As a result, an incision length Sn of the straight incision, that of the central knife, can be represented 51 is formed between the base part of the corner recess part VL on the outside and that of the corner recess part VR on the inside so as to be smaller than a notch length So in a case where the short corner blade is selected as the corner blade on the outside. As a result, it is possible to prevent the cloth from being lifted, which is caused when the cut length of the above-described straight cut is long while the corner blade moves upward on the inner side. Thus, it is possible to resolve the cutting error and form an excellent and accurate corner cut.

In accordance with the operation control program, the index motor continues to become 121 controlled such that the distance from the base part of the corner knife to the straight line incision S becomes the value corresponding to "stitch pattern start right-sided width for corner knives", "stitch pattern start set left-side width for corner knives", "stitch end set right-side width for corner knives" or " Stichbildeendeinstellen left-side width for Eckmesser "corresponds when the respective corner cut parts are formed. Specifically, when the deviation is set and when the "width adjustment" is carried out, a separation from the straight line cut S, as in FIG 26 As shown, for making the inner corner cut part, it is possible to compensate for insufficient cutting toward the straight seam caused when the cloth is lifted while the corner knife on the inner side is moved upward for the cutting operation. Thus, it is possible to form excellent and accurate corner cuts.

When the "width adjustment" of the corner knife is performed to make a separation from the straight line cut S, a front end part of the corner knife is positioned outside the straight cut, as in FIG 27A shown. However, as in 27B and 27C As shown, a blade E reaches a sewing material end while the corner knife is moved upward, so that the cutting operation can be carried out without any problems.

(Additional)

If at the binding machine 10 the set value of the deviation is greater than the threshold, the corner knife is switched to the corner knife with a longer Einschneidelänge. It is desirable that this threshold be determined by carrying out a test concerning the condition that the normal corner knives 101 . 103 can be used for both the left and right corner knives, thus earlier giving a value of the deviation that causes the cutting error due to the lifting of the sewing material.

Even though Furthermore, the "direction selection of stitch pattern start deviation" and the "stitch pattern start deviation amount" in the separately set items be set, and the "Direction Selection of the Stitch Final Deviation" and the "stitch endend deviation amount" in the separately adjusted items, it is also possible to the "information regarding deviation" easier to adjust Predetermination that, after setting the "stitch pattern start deviation amount" and the "stitch endend deviation amount", for example a numeric value with "+" denotes the deviation in a case in which the end part of one of the straight seams (for Example TL) lies on the outer side, and a numerical value with "-" the deviation in one case in which the end portion of the other rectilinear seam (for example TR) is on the outer side.

Although still the binding machine 10 the controller for performing switching to the corner knife with a different cutting length in accordance with the deviation as also the control for causing the distance from the base part of the corner knife to the straight line cut S, the set values of "setting the stitch pattern start right-side width for corner knives", "setting the stitch pattern start left-side width for corner knives", "setting the stitch pattern the right-side width for It is also possible to adopt a configuration in which only one of the above controls is performed. That is, even if only one of the above controls is executed, it is possible to eliminate the insufficient cutting to the straight seam caused by the lifting of the sewing material due to the deviation while the corner blade on the inside is for the purpose of the cutting operation moved upwards.

Even though furthermore the corner knives with two different lengths for left and right corner knives in each of the corner knives mechanism provided according to the embodiment are, it is obvious that more corner knives with different lengths can be installed. In this case, it is desirable that a corner knife with the longest Einschneidelänge is only used when the outer corner incision part is used under a condition that the deviation is greater than the threshold.

Furthermore, in each of the corner knife mechanisms 100A . 100B the index 106 at any position in the Y-axis direction using the index motor 121 be positioned. In a case, however, in which a precise adjustment in the Y-axis direction, for example, the stitch setting start right-hand width for corner knives, the stitch setting start setting left-side width for corner knives, the stitch end setting right-hand width for corner knives or the stitch end setting left-hand width for Eckmesser Corner knife "is not required, it is also possible to use an air cylinder or an electromagnet, the a position switching drive operation at a plurality of specific position instead of the index motor 121 can perform.

28 FIG. 12 is a schematic view showing an example of a construction in which the indexing drive operation of the index. FIG 106 This can be done by having two air cylinders 125 . 126 be used, which can be switched to two positions. Because body structures except the air cylinders 125 . 126 are the same as those described above, they have the same reference numerals and a repeated description omitted.

The index 106 becomes in the Y-axis direction with respect to the unit body 105 kept movable. In the air cylinder 125 is a front end part of a piston part, which is moved forward and backward between two positions, at the index 106 fixed and docked there. On the other hand, the air cylinder works 126 as a stopper for stopping the index 106 in the two positions by a concern of the piston part on a side surface of the index 106 to move forwards and backwards between the two positions.

It is for the index 106 necessary to allow a switch to a position in which the up-down console 108a of the corner knife 102 in engagement with the cylinder console 133 is (leftmost position: 28A ), a position in which the up-down consoles 107a . 108a the corner knife 101 . 102 in engagement with the cylinder consoles 133 . 134 are, (a middle position: 286 ), and a position in which the up-down console 110a of the corner knife 104 engaged with the cylinder console 134 (a rightmost position: 28C ).

In the air cylinder 125 A range of movement of the piston is set to switch the index 106 in two positions, that is, in the leftmost position and in the rightmost position. On the other hand, in the air cylinder 126 the range of motion of the piston is set to be switchable to two positions, that is, a non-interference position located on a left side of the index 106 is placed in the leftmost position, and a center position with a concern at the index 106 , Furthermore, the air cylinder to be used 126 the position stronger than the air cylinder 125 hold.

In the case where the index 106 is aligned with a position in which the up-down console 108a of the corner knife 102 in engagement with the cylinder console 133 As a result, the air cylinder becomes 125 set to the leftmost position, and the air cylinder 126 is set to the non-interference position.

In the case where the index 106 is aligned with a position in which the up-down consoles 107a . 108a the corner knife 101 . 102 in engagement with the cylinder consoles 133 . 134 In addition, the air cylinder presses 126 predominantly the air cylinder 125 so the index 106 can be aligned with the center position when the air cylinder 126 is aligned with an intermediate position, wherein the air cylinder 125 is attracted to the leftmost position.

In the case where the index 106 with a Position is aligned, in which the up-down console 110a of the corner knife 104 with the cylinder console 134 is engaged, continues to be the air cylinder 125 placed in the rightmost position, and the air cylinder 126 is placed in the non-interference position (any position).

Through the process, the index 106 be switched into the three positions, and the cutting process using the respective Eckmesser 101 to 104 can be executed.

Although each of the index movement mechanisms 120 the corner knives mechanisms 100A . 100B the index 106 in an arbitrary position in the Y-axis direction by means of the index motor 121 Moreover, by using the ball screw mechanism, it is also possible to adopt another mechanism in addition to the ball screw mechanism, if the same function can be performed.

29 is a perspective view showing an index movement mechanism 220 using a slider crank mechanism in place of the ball screw mechanism, and 30A to 30C Figs. 10 are views for explaining a positioning operation in three predetermined places for selecting each of the corner knives 101 to 104 ,

The index movement mechanism 220 includes: an index motor 221 which is to be a positioning motor formed by a stepping motor fixed to the unitary body 105 is held, wherein an output shaft is turned in the X-axis direction, a crank arm 222 , which is connected to the output shaft of the index motor 221 is provided and serves to perform a turning operation, a slide member 223 that at the index 106 is fixed and coupled and serves to perform a linear reciprocating operation in the Y-axis direction, and a connecting rod 224 for coupling the slide member 223 to a rotating end of the crank arm 222 ,

If through this construction the crank arm 222 a rotation about the X-axis through an output of the index motor 221 in the index movement mechanism 220 performs only a movement component in the Y-axis direction through the connecting rod 224 on the slider member 223 which can be moved only in a direction set along the Y-axis direction together with the index 106 , At this time, a height of an output shaft becomes 221a of the index motor 221 adjusted to a height of a coupling shaft 225 for rotatable coupling of the connecting rod 224 to the slider member 223 coincident is how in 30 shown. That's why the index can 106 and the slider mechanism 223 within a reciprocating range of twice the length of a center distance of the crank arm 222 be moved back and forth (a distance between a center line of the output shaft of the index motor 221 and a centerline of a clutch shaft for coupling the crank arm 222 to the crank rod 224 ).

As described above, the index becomes 106 placed in three positions, that is, in the leftmost position, in the middle position and in the rightmost position (see FIG 28A to 28C ). The lengths of the crank arm 222 and the connecting rod 224 are determined so that the left-most position and the right-most position are placed below the three positions near one end of the reciprocating area and near the other end thereof.

Since the slider crank mechanism is applied, a change in the amount of movement of the index 106 with respect to the rotation angle of the index motor 221 largely reduced, as in 30A and 30C shown, in movement to both ends within the range of reciprocation of the index 106 , Accordingly, quick stopping can be prevented, and the stopping can be smoothly performed in the positioning to the leftmost position and the rightmost position. Therefore, it is possible to effectively suppress a vibration, a noise, or a positional shift.

In the movement toward the center position, the change in the movement amount of the index 106 with respect to the rotation angle of the index motor 221 maximized. However, the center position has a half length of a total length of the reciprocating area. Therefore, the influence of the vibration, the noise or the positional shift can be reduced and practically allowed.

As in 30A and 30C Also, the leftmost position and the rightmost position may also be complete with one end of the index's float range 106 coincide and are desirably set on a slight inner side from the end, respectively. However, by setting them slightly on an inner side from the end, a movement distance can be assigned to the end of a precise adjustment in the Y-axis direction, for example, as "setting the stitch-image start right-side width for corner knives", "setting the stitch-image start left-side width for Corner Knife "," Setting the stitch pattern end right - side width for corner knives "or" Setting the Engraving end left width for corner knives ".

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - JP 2000-107473 A [0004, 0006]
• - JP 1-38519 B2 [0005]
• - JP 1-38519 B [0009]

Claims (5)

A bordering machine ( 10 ) comprising: two separately arranged needles ( 41 ) to form two parallel, straight seams (TL, TR) on a main sewing material (M) and a bordering patch (B); a needle vertical movement mechanism ( 40 ), which is operable to move the two needles ( 41 ) in a vertical direction (Z); a fabric feed mechanism ( 20 ) operable to hold and feed the main sewing material (M) and the binding patch (B) in a cloth feeding direction (F); a movement-measuring mechanism ( 50 ) operable to form a straight line cut (S) between the two straight seams (TL, TR); a pair of corner knives ( 100A . 100B ) arranged to correspond to respective end portions of the rectilinear notch (S), each of the corner knuckle mechanisms ( 100A . 100B ) is operable to form corner cut portions (VFL, VFR, VRL, VRR) between the corresponding one of the end portions of the straight cut (S) and each of the adjacent end portions of the two straight seams (TL, TR); and control means ( 81 ) for controlling each of the mechanisms ( 40 . 20 . 50 . 100A . 100B ) to form the two straight seams (TL, TR) so that positions of the adjacent end parts of the two straight seams (TL, TR) in the work feed direction (F) are different from each other, and around the corner cut parts (VFL, VFR, VRL, VRR) starting from the respective end parts of the two rectilinear seams (TL, TR) to the rectilinear notch (S), characterized in that each of the pair of corner knuckle mechanisms (TL) 100A . 100B ) comprises: a plurality of corner knives ( 101 . 102 . 103 . 104 ) operable to form the corner cut portions (VFL, VFR, VRL, VRR) on respective sides of the straight seam (S) having different cut lengths; a selection mechanism ( 120 . 220 ) operable to remove from the plurality of corner knives ( 101 . 102 . 103 . 104 ) to select a pair of corner knives for the respective sides of the rectilinear notch (S); and a vertical movement mechanism ( 130 ) operable to move the selected pair of corner knives in the vertical direction (Z), and in that the bordering machine ( 10 ) also comprises: deviation adjustment means ( 85 ) for setting information regarding a deviation (CF, CR) between the adjacent end parts of the two straight seams (TL, TR) in the work feed direction (F); Deviation decision-making means ( 81 ) for deciding, based on the information regarding the deviation, whether or not the deviation (CF, CR) exceeds a threshold value; and corner fitting part inside / outside decision means ( 81 ) for deciding whether to form each of the corner cut parts (VFL, VFR, VRL, VRR) to be formed from each of the adjacent end parts of the straight seams (TL, TR) to the straight line cut (S), with respect to a center of the straight line Notch (S) in the cloth feed direction (F) is on an inner side or an outer side; wherein the control means ( 81 ) are operable to move the fabric feed mechanism ( 20 ) and the corner knives ( 100A . 100B ) such that when the deviation decision means ( 81 ) decide that the deviation (CF, CR) is smaller than the threshold value, each of the inner corner cut portions is formed at a position shifted from the position of the corresponding one of the outer corner cut portions in the cloth feed direction (F) by the deviation (CF, CR) is; and the selection mechanism ( 120 . 220 ) such that when the deviation decision means ( 81 ) decide that the deviation (CF, CR) is greater than the threshold value, the 102 . 104 ) with longer incision lengths are selected for the respective outer corner cut portions as compared with a case where the deviation (CF, CR) is smaller than the threshold value. The bordering machine ( 10 ) according to claim 1, further comprising: distance input means ( 85 ) for inputting a distance between an end portion of each of the corner cut portions (VFL, VFR, VRL, VRR) on a side of a corresponding one of the straight seams (TL, TR) and a corresponding one of the straight seams (TL, TR) in a direction (Y) perpendicular to the material feed direction (F); the selection mechanism ( 120 . 220 ) a position motor ( 121 . 221 ), each of the corner knives ( 101 . 102 . 103 . 104 ) moves in the direction (Y) perpendicular to the Nähgutvorschubrichtung (F), and the control means ( 81 ) are still operable to move the positioning motor ( 121 . 221 ) in such a way that with respect to the Eckmesser ( 101 . 102 . 103 . 104 ), which by the vertical movement mechanism ( 130 ) in the vertical direction (Z), a distance between an end portion of the corner blade ( 101 . 102 . 103 . 104 ) on one side of the straight line incision (S) and the straight line incision (S) in the direction (Y) perpendicular to the material advancing direction (F) becomes equal to the distance defined by the distance input means (5). 85 ) is set. The bordering machine ( 10 ) according to claim 1 or 2, wherein the movement-measuring mechanism ( 50 ) comprises: a motion meter ( 51 ) held above a feeding path of the main sewing material (M) and the skirting spot (B) so as to be movable in the vertical direction (Z); and a knife motor ( 57 ), which the motion meter ( 51 ) is moved in the vertical direction (Z), wherein the control means ( 81 ) are also operable to move the blade motor ( 57 ) and the Nähgutvorschubmechanismus ( 20 ) such that the straight line incision (S) is formed from an end portion of one of the outer corner recessed portions on one side of the linear notch (S) to an end portion of the other of the outer corner recessed portions on one side of the linear notch (S). The bordering machine ( 10 ) according to one of claims 1 to 3, wherein the selection mechanism ( 220 ) includes a slider crank mechanism operable to translate a rotational force into a linear, reciprocating motion for selecting the corner blade (Fig. 101 . 102 . 103 . 104 ) to convert. The bordering machine ( 10 ) according to claim 4, wherein the selection mechanism ( 220 ) the respective corner knives ( 101 . 102 . 103 . 104 ) are positioned at a plurality of positions within a reciprocating region of the linear, reciprocating motion to move the respective corner knives ( 101 . 102 . 103 . 104 ). The plurality of positions include respective ends of the to-and-fro area.