TWI589748B - Sewing machine rotary take-up lever device - Google Patents

Description

Rotary take-up lever device for sewing machine Field of invention

The present invention relates to a rotary take-up lever device for a sewing machine.

Background of the invention

In the herringbone type sewing machine in which the needle is placed, a take-up lever of a rotary take-up lever type that rotates around the main shaft is used.

The rotary take-up lever (the thread take-up lever member) is provided on the face side of the sewing machine arm portion, and has a wrist portion that is extended in the radial direction. Further, the wire guide from the wire supply source side comes to the vehicle wire (upper line) of the wire guide portion on the needle side via the wrist portion of the rotation take-up lever, and moves back and forth to the base end of the wrist in response to the rotation of the rotation take-up lever. Between the portion and the leading end portion in the radial direction, the path length and tension of the upper line are changed to cause the occurrence of the line of the upper line supply or the nodule of the toe.

However, as shown in Fig. 9, the shuttle curve (the change in the pull-in amount of the shuttle) K and the curve of the take-up lever (the change in the amount of the upper thread obtained by the rotary take-up lever) T, the interval in which the upper thread is pulled up by the rotary take-up lever When the upper line hooked by the shuttle is separated from the shuttle, an extra line A is generated. Further, especially when the sewing is performed at a low tension, since the thread is easily pulled out, the amount of the excess upper thread A is increased, and there may be a problem that the upper thread runs, knots, or touches the parts of the sewing machine and is broken. .

Therefore, in the section from the bottom dead center M to the top dead center J of the above-mentioned take-up lever curve, it is necessary to appropriately adjust the amount of the upper thread obtained by rotating the thread take-up lever corresponding to the amount of the upper thread drawn by the shuttle, Reach the reduction line off the bobbin case The excess amount of time.

Therefore, in the herringbone sewing machine described in Patent Document 1, as shown in Fig. 10, on the side of the face of the sewing machine 200 provided with the rotary take-up lever 201, it is provided to be able to pass through the supply line from the upper thread to the rotary take-up lever. The first wire guiding portion 202 of the upper line T of 201 and the second wire guiding portion 203 that can be passed through the rotating thread take-up lever 201 to the upper thread T of the bur. Further, at least one of the first wire guiding portion 202 and the second wire guiding portion 203 is rotatably provided, thereby changing and adjusting the wire guiding portion 202 formed on the upper wire supply source side in the wire passing path, and the rotation take-up line. The line passing between the rod 201 and the wire guide portion 203 on the yoke side of the line passes through the path, and the amount of take-up of the upper thread T is adjusted.

Advanced technical literature Patent literature

Patent Document 1: Japanese New Publication Gazette No. 04-125873

Invention

However, in the sewing machine described in Patent Document 1, the wire guides 202 and 203 for changing the path of the adjustment line have a structure in which the upper thread T is passed through the threading hole. As shown in Fig. 11, the upper thread is often threaded. 202A is restricted. Therefore, when the position adjustment of the wire guiding portion 202 is performed, the curve of the thread take-up lever Ta shown by the two-point chain line in Fig. 9 is changed, because the adjustment adjustment line passes through the influence of the path, and the spindle rotates once, at the whole In the angle, the amount of thread taken by the rotating take-up lever to the upper thread will change.

For example, the pick-up point on the top dead point J or the drop point R is matched with the burs on the cloth. In the sewing machine of Patent Document 1, when the adjustment line passes the path and the adjustment of the upper thread take-up amount is changed, the phase of the top dead center J or the drop point R of the thread take-up lever changes. , there may be a flaw that affects the formation of the toe and leads to a reduction in the quality of the sewn.

SUMMARY OF THE INVENTION An object of the present invention is to provide a rotary take-up lever device for a sewing machine which can adjust the amount of thread taken up by the upper thread when the rotary take-up lever is pulled up.

The invention of claim 1 is the rotary thread take-up lever device of the sewing machine, comprising: a thread take-up lever member that rotates synchronously with the rotation of the sewing machine main shaft, and has an upper thread hooking portion at the front end portion; a guiding member passing through the upper line supply source to the upper thread of the thread take-up lever member; and a second thread guiding member passing through the thread take-up lever member to the upper line of the bur, and by the aforementioned thread take-up member Rotating, performing periodic pulling and loosening of the upper line in synchronization with the rotation of the aforementioned spindle, the rotary take-up lever device of the sewing machine is characterized by comprising: an adjusting body which is passed by the rotation of the thread take-up lever member In the direction in which the path is changed by the first or second wire guiding member, the path is changed from the one side of the direction to the upper line, thereby changing the length of the path of the upper line, and adjusting the aforementioned The wire take-up member picks up the wire from the upper thread; and the position adjusting mechanism performs the position adjustment of the adjusting body in a plane in which the upper thread passes the path to rotate.

The invention of claim 2 of the patent application has the same configuration as the invention of claim 1 wherein the aforementioned adjustment system is set to be The first wire guiding member abuts against the upper thread of the thread take-up lever member.

The invention of claim 3 of the patent application has the same configuration as the invention of claim 1 wherein the adjustment system is provided to abut against the upper thread from the thread take-up lever member to the second wire guiding member.

The invention of claim 4 has the same configuration as the invention of claim 1 and the adjustment system is disposed to pass the path between the above-mentioned thread take-up member and the first or second wire guiding member. Upwinding, from the line of the first wire guiding member to the wire take-up member through the path from the bottom dead center to the rotation through the top dead center, or from the wire take-up member to the second The line of the wire guiding member passes through the area where the path changes, and can abut on the upper line.

The invention of claim 5 of the patent application has the same configuration as the invention of claims 1 to 4, and the position adjustment mechanism is only in the range of the spindle angle from the dead point below the thread take-up member to the top dead center. The position adjustment of the adjustment body is performed while the adjustment body can abut against the movement range of the aforementioned upper line.

The invention of claim 6 is a rotary thread take-up lever device for a sewing machine, comprising: a thread take-up lever member that connects a base end portion to a main shaft of a sewing machine, and has an upper thread hooking portion at a front end portion, The end portion is a center rotator; the first thread guiding member is fixed to the front end of the sewing machine arm portion, and is fixedly disposed below the rotation range of the thread take-up lever member and is separated from the lead line passing through the rotation center on one side, and is passed through a wire feeding source to the upper thread of the thread take-up lever member; and a second wire guiding member at a lower end portion of the front end of the sewing machine arm portion below the rotation range of the thread take-up lever member Fixedly arranged to face the upper and lower passing paths of the needle bar, and pass through the wire rod member to the upper thread of the needle, and the rotation of the thread take-up rod member synchronizes the periodicity of the line with the rotation of the spindle Pulling and relaxing, the rotary take-up lever device of the sewing machine is characterized by comprising: an adjusting body having an engaging portion for the first wire guiding member or the second wire guiding member and the thread take-up lever The upper line between the members abuts the upper line only from one side; and the position adjusting mechanism is capable of passing the path between the aforementioned first wire guiding member or the second wire guiding member and the thread take-up lever member because of the aforementioned pick The position of the adjustment body is adjusted in a plane in which the rotation of the wire rod member changes.

According to the present invention, since the one-side abutment of the upper line in the direction of the angle change is generated only by the rotation of the upper line, the thread take-up member can adjust the thread take-up amount of the upper thread, so that the thread take-up lever can be easily used. The member rotates the upper wire within the full range, so that the adjustment body only abuts a part of the range. Therefore, regarding the spindle angle that does not want to change the thread take-up amount of the pick-up line, the line can be appropriately adjusted to adjust the position so that the adjusting body does not abut the line, or avoid the dead point, the off-line, etc. The spindle angle of the phase change is used to adjust the position of the adjustment body.

In addition, when the position adjusting mechanism is configured to be in the range of the spindle angle from the bottom dead center of the thread take-up lever to the top dead center of the thread take-up lever, the position of the adjusting body can be adjusted when the moving range of the upper thread is adjusted, when When the adjustment body is moved to adjust the thread take-up amount of the thread take-up member to the upper thread, it is only variable within the range of the spindle angle that has passed the bottom dead center of the take-up rod to the top dead center of the thread take-up rod. Dynamically adjusting the thread take-up amount of the take-up lever member to the upper thread, the phase change of the top dead center or the falling point of the thread take-up lever is not generated, and the thread take-up amount of the take-up lever member to the upper thread can be adjusted.

Simple illustration

Fig. 1 is a side view of the herringbone sewing machine of the present embodiment as seen from the face side.

Fig. 2 is a cross-sectional view of the face along the W-W line of Fig. 1.

Fig. 3 is a view showing the state of the shortest path change from the first wire guiding member to the second wire guiding member in the present embodiment, and (A) to (G) respectively show the spindle angles of 80° and 90°. , 150 °, 180 °, 210 °, 240 °, 270 ° state.

Fig. 4 is a view showing the state of the shortest path change from the first wire guiding member to the second wire guiding member in the present embodiment, and (A) to (F) respectively show the spindle angles of 310° and 330°. , 0°, 30°, 60°, 70°.

Fig. 5 is a line diagram showing the shuttle curve corresponding to the spindle phase of the sewing machine and the curve T of the rotary take-up lever in the present embodiment.

Fig. 6 is an explanatory view for explaining the adjustment of the spindle angle range in the adjustment body of the embodiment to adjust the thread take-up amount on the thread take-up member.

Fig. 7 is an explanatory view showing the range in which the regulating body of the present embodiment is to be arranged.

Fig. 8 is an explanatory view showing an arrangement example of an adjustment body abutting on a line from the thread take-up lever member to the second wire guiding member in the second embodiment.

Figure 9 shows the change in the amount of the pull-in thread on the conventional sewing machine. A line diagram of the curve of the rotary take-up bar that changes the amount of wire on the take-up bar member.

Fig. 10 is a side view of the conventional herringbone sewing machine viewed from the face side.

Fig. 11 is an explanatory view showing that the upper line is often restricted by the line guide in the line guide of Patent Document 1.

Form for implementing the invention (The entire configuration of the embodiment of the invention)

Hereinafter, the herringbone sewing machine 10 including the take-up thread take-up type take-up lever device according to the first embodiment will be described with reference to Figs. 1 to 7 . In the following description, the direction in which the feeding is performed horizontally is the X-axis direction, the flat direction orthogonal to the feeding direction is the Y-axis direction, and the vertical direction is the Z-axis direction.

The herringbone sewing machine 10 has a conventional arm structure, and includes a head portion (not shown) in which a shuttle mechanism or a feeding mechanism is disposed, an arm portion 10A disposed above the head portion, and a head portion and a wall portion. The longitudinal body (not shown) is formed.

In the longitudinal direction (Y-axis direction) of the arm portion 10A, a needle bar 12 that holds the needle 11 at the lower end portion and a needle-swing mechanism 20 that swings the needle bar 12 in a direction orthogonal to the Z-axis direction are disposed. The vertical movement mechanism 30 for moving the needle bar up and down, and the rotary thread take-up lever device 40 having the thread take-up lever member 41.

The needle pendulum mechanism 20 has a rocking table 22 coupled to the support shaft 21 along the Y-axis direction, and the support shaft 21 and the rocking table 22 are moved back and forth along the Y-axis direction by a dedicated driving source or a driving force of the lower shaft. A conventional motion communication mechanism not shown.

Moreover, the rocking table 22 supports the needle bar 12 through the metal bearing to be along the Z Slide in the direction of the axis.

The vertical movement mechanism 30 includes a main shaft 31 that is provided along the Y-axis direction, a oscillating weight 32 that is fixed to the front end portion of the main shaft 31, and is rotatable about the Y-axis, and the upper end portion is coupled to an eccentric position from the center of rotation of the oscillating weight 32. The needle bar crank 33 and the needle bar pin 34 that holds the needle bar 12 are fixed.

The spindle 31 is rotatably driven by being coupled to a sewing machine motor (not shown).

Further, the needle bar plug 34 is rotatable about the Y axis and is slidably supported by the lower end portion of the needle bar crank 33 in the Y-axis direction. Thereby, even when the needle bar 12 is moved back and forth along the Y-axis direction by the needle swing mechanism 20 through the swinging table 22, the needle bar 12 can be moved up and down by the needle bar stopper 34 while allowing the back and forth movement.

Further, although the description is omitted, the herringbone sewing machine 10 has a mechanism such as a shuttle mechanism that winds the upper thread around the lower thread and a feeding mechanism that feeds the yarn along the X-axis direction.

(pick rod device)

The rotary take-up lever device 40 includes a thread take-up lever member 41, a rotating circular plate 42, a connecting shaft 43, a first wire guiding member 44, a second wire guiding member 45, a boot 46, an adjusting body 51, and a position adjusting mechanism 52.

Both ends of the connecting shaft 43 are coupled to the rotating circular plate 42 and the main shaft 31, and are coupled to the main shaft 31 to rotate the rotating circular plate 42.

The panel 60 is fixed to an end portion of the arm portion 10A in the longitudinal direction, and an opening portion 61 into which the rotating circular plate 42 is rotatably fitted is formed.

The thread take-up member 41 has its base end portion fixedly supported by the rotating circular plate 42 and rotated The rotary plate 42 is rotated together in the clockwise direction of the first drawing (arrow direction R). The tip end portion of the thread take-up lever member 41 extends outward in the radial direction from the center of rotation.

Moreover, the front end portion of the thread take-up lever member 41 has a pair of hooks 41a and 41b which are both directions of the wire hooking portion extending in the wiring direction of the rotating arc. Each of the hooks 41a and 41b is curved in a direction away from the panel 60 as it goes toward the front end portion. By forming the above-described shape, when the front end portion of the thread take-up lever member 41 faces downward, the upper thread T is hooked around the back side of each of the hooks 41a and 41b, and the upper thread T can be prevented from falling off from the thread take-up lever member 41.

The first wire guiding member 44 is fixedly disposed below the rotation range of the thread take-up lever member 41 at the tip end of the sewing machine arm portion and facing the operator, and passes through the thread take-up lever member 41. The lead in the center of rotation is separated linearly on one side. In other words, the first wire guiding member 44 and the second wire guiding member 45 to be described later are also disposed apart from one side in the side direction. The first wire guiding member 44 can pass through the upper wire T from the upper wire supply source to the thread take-up lever member 41.

Further, the second wire guiding member 45 is fixedly disposed so as to be substantially opposed to the upper and lower ends of the needle bar 12 at the lower end portion of the panel 60 below the rotation range of the thread take-up lever member 41, that is, at the lower end portion of the front end of the sewing machine arm portion. path. The second wire guiding member 45 can pass through the upper thread of the needle bar hooking portion 13 from the thread take-up lever member 41 to the bur.

Each of the line guiding portions 44 and 45 is configured such that the upper thread T passes through a threading hole (not shown) that passes through the path opening along the upper line to guide the upper line to always pass a certain range.

Further, in the thread take-up lever member 41, a recessed portion 41c is formed in the vicinity of the base end portion and the edge portion on the front (downstream) side in the rotational direction. The recess 41c is in the main shaft The rotation angle is 90° in the vicinity of the front (the rotation angle of the spindle at the top dead center of the needle bar is 0°), that is, when the needle 11 starts to penetrate the cloth, the first wire guiding member 44 passes through the side edge portion of the thread take-up lever member 41. The upper line T to the second wire guiding member 45 is hooked on the concave portion 41c, whereby the tension of the upper thread T pulled by the thread take-up lever member 41 is released, and the excess upper thread T is pulled out so that the needle thread 11 penetrates the upper thread T. The margin can be maintained (refer to Figure 3(B)). When the upper thread T is hooked on the concave portion 41c, the spindle rotation angle at which the tension of the upper thread T is pulled up by the thread take-up lever member 41 is the drop point R (refer to Fig. 5).

The adjustment body 51 is fixed to the panel 60 at the base portion 53 by a fixing screw 54, and has a round bar-shaped engaging portion 51A that is erected in the Y-axis direction at the distal end of the extended portion extending from the base portion 53 to the upper side. The engaging portion 51A abuts on the circumferential surface only from the upper line T between the thread take-up lever 41 and the first wire guiding member 45 from one side. The adjustment body 51 can change the line amount of the upper thread T of the adjustment take-up lever member 41.

The position adjusting mechanism 52 that adjusts the position of the adjusting body 51 is composed of a base portion 53, a long hole 53a, a fixing screw 54, and a rotation preventing pin 55.

The base portion 53 is formed with a long hole 53a along the longitudinal direction, and the fixing screw 54 is passed through the long hole 53a. Further, a projecting rotation preventing pin 55 projecting from the panel 60 is fitted to the long hole 53a. The fixing screw 54 is loosened, and the adjusting body 51 is guided by the rotation preventing pin 55 and the fixing screw 54 to move along the long hole 53a, whereby the plane of the upper thread passing path can be changed by the rotation of the thread take-up lever member 41. That is, in the plane of the panel 60, the position of the adjustment body 51 is adjusted.

Here, according to the third to sixth figures, the change in the path of the shortest line passing the upper thread caused by the thread take-up lever member 41 will be described.

In addition, the two-point chain line of each figure in FIG. 4 is illustrated as a hypothetical adjustment body 51. When the absence is present, the upper line is the shortest passing path, and the illustration of the position adjusting mechanism 52 is omitted in the third and fourth figures.

Further, in the fifth diagram, the rotation take-up lever curve T shows that the adjustment body 51 does not exist, and the rotation take-up lever curve Tx (a little chain line) displays the adjustment of the thread take-up amount of the thread take-up lever member by the adjustment body 51. Happening.

Further, in the description of the shortest line passing path in this paragraph, the influence of the adjustment body 51 (the engaging portion 51A) on the abutment of the upper thread T is not considered.

As shown in the third (A), 4 (A), and 5, the thread take-up lever member 41 is attached to the rotating circular plate 42. When the spindle angle is about 310°, the amount of wire taken up on the upper thread is the smallest and the bottom of the thread take-up is bottom dead center. M, when the spindle angle is about 80°, the upper thread take-up amount is the largest and the take-up pole top dead center J.

Then, in the sewing machine 10, the shortest line passing path from the first wire guiding member 44 to the thread take-up lever member 41 at the bottom dead center M of the thread take-up lever (hereinafter simply referred to as "the shortest line passing path") is set. It is preferable to overlap the line segment L1 that connects the first wire guiding member 44 and the rotation center of the thread take-up lever member 41 (the shortest line passing through the main axis angle of about 70° passes through the path direction. See FIG. 6).

And, by the shortest line passing path after the bottom dead center M of the thread take-up lever, the inclination thereof is changed with respect to the line segment L1 as the center of the first line guiding member 44 to the left in the sixth figure (counterclockwise direction), the spindle angle At about 0°, the angle of the shortest line passing path relative to the left side of the line segment L1 (counterclockwise direction) is the largest. Θa in Fig. 6 shows the line segment passing the path along the shortest line when the angle change to the left (counterclockwise direction) is maximum.

Then, the steepest line passes the slope of the path once it exceeds the maximum left corner The degree change position θa, then changes to the right in the sixth figure (clockwise direction), and the top dead center J of the take-up rod when the spindle angle is about 80° (the θb of Fig. 6 is along the take-up rod) The line of the dead point passes through the line segment of the path), and then the angle between the right side (clockwise direction) and the left side (counterclock direction) changes. When the spindle angle is about 270°, the shortest line passes through the path relative to the line segment L1. The angle of the right side (clockwise direction) changes to the maximum. Then, the shortest line passes the angle change on the left side (counterclockwise direction) and reaches the bottom dead center M again.

The adjusting body 51 has to adjust the thread taking amount of the thread take-up lever member 41 to avoid the influence of the top dead center J and the falling point R on the upper thread T, and minimize the disconnect point (the spindle rotation angle of the shuttle liberation upper line) G The difference between the amount of thread that the shuttle pulls into the upper thread T and the amount of thread taken by the thread take-up lever member 41 to the upper thread T.

The adjustment body 51 abuts on the upper thread T only from one side in a direction in which the upper thread passing path is rotated about the first or second wire guiding member 45 by the rotation of the thread take-up lever member. . Thereby, the adjustment body 51 can change the passage length of the upper thread T to adjust the thread take-up amount of the thread take-up lever member 41 to the upper thread T.

In the sewing machine 10, for example, the adjustment body 51 can be placed in contact with the upper thread within a range from the bottom dead center M of the thread take-up lever to the top dead center J of the thread take-up lever.

In Fig. 7, θc is a straight line passing through the path along the shortest line of the upper line T at the rotation angle at the time of the departure point G (Fig. 5).

The adjustment body 51 is abutted before and after the rotation angle range position adjustment after the thread take-up bottom dead center M and before the thread take-up top dead center J is adjusted. On the upper line, it is the area sandwiched by the straight line θb and the straight line θc.

Further, the adjustment body 51 is preferably disposed outside the rotation range H of the thread take-up lever member 41 in order to avoid mutual interference with the thread take-up lever member 41.

It should be noted that the arrangement of the adjustment body 51 is preferably in the region E surrounded by the straight line L1, the straight line θc, and the circular arc H (on the line including the straight line L1 and the straight line θc, and the line including the circular arc H). Further, the position adjustment possible range of the engaging portion 51A is also preferably within the range of the region E.

In the present embodiment, the position of the adjustment body 51 can be adjusted along the line of the straight line L1.

Further, the long hole 53a is parallel to the line segment L1. When the adjustment body 51 relaxes the fixing screw 54 and adjusts the position, the engagement portion 51A can always be moved and adjusted in a direction parallel to the line segment L1 without departing from the region E.

By the above arrangement, the adjustment body 51 can abut the engagement portion 51A to the upper thread T from the first wire guiding member 44 to the thread take-up lever member 41 only in the range of the main shaft angle of about 310 to 70°, only in the The spindle rotation angle section adjusts the thread take-up amount of the thread take-up lever member 41 to the upper thread T.

Further, by adjusting the position of the adjustment body 51 (the engagement portion 51A) in the above-described direction, the spindle angle section for adjusting the thread take-up amount of the upper thread take-up member can be changed without changing the thread take-up lever member. Increase or decrease the amount of line taken on the line.

(The effect of the picking rod device)

The adjustment of the line amount of the upper thread T and the effect thereof by using the rotary thread take-up lever device 40 will be described based on Fig. 5 .

In the herringbone sewing machine 10, especially in the tension setting of the upper thread T In the low case, when the shuttle liberates the off-line T (the G point in the curve K of the rotary take-up lever in Fig. 5: the spindle angle is about 350°), the line is liable to be broken. Therefore, in the range including the predetermined spindle rotation angle at the time of the departure, adjustment must be made so that the difference between the thread take-up amount of the thread take-up lever member 41 for the upper thread and the amount of the pull-in upper thread T of the shuttle is smaller.

On the other hand, the thread take-up lever member 41 has the highest thread take-up point on the upper thread T, or the upper thread T hooks the drop point R of the recessed portion 41c of the thread take-up lever member 41 because it is easy to be used for the toe. Since the formation has an influence, it is necessary to require the phase (the spindle rotation angle) of the above-mentioned points or the amount of the thread take-up of the wire take-up lever members of the phases to be different from the upper thread T. Further, in the sewing machine 10, the phase of the top dead center J of the thread take-up lever is set to about 80°, and the drop point R is set to about 90°.

The fixing screw 54 is loosened, the adjustment body 51 is moved along the line L1 to adjust the position, and the take-up amount of the thread take-up lever member 41 to the upper thread T is adjusted. At this time, by moving to a direction away from the first wire guiding member 44, the thread take-up amount of the thread take-up lever member 41 to the upper thread T is increased; by moving to a direction close to the first wire guiding member 44, the thread take-up lever member 41 is reduced. The amount of thread taken on the line.

Then, when the position of the adjustment body 51 is determined, the fixing screw 54 is locked to fix the position of the adjustment body 51.

At the time of sewing, the engaging portion 51A abuts against the upper thread T from the first wire guiding member 44 to the thread take-up lever member 41 in the range of the spindle angle of about 310° to the spindle angle of 70°, by bending the upper thread T. Increasing the shortest line through the path distance increases the amount of thread taken by the take-up lever member 41 for the upper thread T. Therefore, the rotary take-up lever curve Tx as shown in Fig. 5 can be obtained, and when the shuttle is disconnected, the pull of the shuttle can be reduced. The difference between the amount of incoming thread and the amount of thread taken by the thread take-up lever member 41 to the upper thread T can suppress the occurrence of a disordered line.

As described above, in the herringbone sewing machine 10, the line T from the first wire guiding member 44 to the thread take-up lever member 41 is reversed from the direction of rotation of the thread take-up lever when passing the bottom dead point of the thread take-up lever (1st) In the left side of the drawing, the engaging portion 51A is brought into contact with the adjusting body 51 of the upper thread T, and the thread take-up amount of the thread take-up lever member 41 to the upper thread T can be adjusted, so that the engaging portion 51A can easily abut only a part of the range, for example, The spindle angle (for example, the spindle rotation angle when the shuttle is removed) to adjust the thread take-up amount of the thread take-up lever member to avoid the top dead center J or the drop point R.

Thereby, it is possible to avoid unnecessary influence on the sewing seam, and it is possible to avoid the situation in which the thread is detached, and to perform appropriate adjustment in accordance with the purpose.

Further, since the base portion 53 of the position adjusting mechanism 52 is supported to be linearly movable in the predetermined direction with respect to the fixing screw 54, the spindle angle section for adjusting the thread take-up amount of the upper thread take-up member does not change, and can be performed. The take-up lever member adjusts the amount of take-up of the upper thread, and the adjustment work can be performed more easily and quickly.

(Second embodiment)

The adjustment body 51 described above is disposed in contact with the line from the first wire guiding member 44 to the thread take-up lever member 41, but is not limited thereto.

In other words, as in the second embodiment shown in Fig. 8, the adjustment body 51 may be disposed such that the engagement portion 51A abuts against the slave take-up lever from the downstream side (the left side of the first drawing) in the rotation direction of the thread take-up lever. The upper line T of the member 41 to the second wire guiding member 45.

Moreover, in this case, the adjustment body 51 is also disposed in an area as follows, and the position can be adjusted in the area, the area is along the line from the take-up lever At the time of the dead point, the shortest upper line of the thread take-up lever member 41 to the second wire guiding member 45 passes through the straight line of the path (including the straight line), along the take-up lever member 41 from the disconnecting point to the second wire guiding member 45 The shortest line passing through the path (including the line) and the area surrounded by the arc of the rotation range of the thread take-up member 41 (excluding the line of the arc).

Specifically, the position adjusting mechanism 52A is configured to include a base portion 53A that supports the adjustment body 51, a fixing screw 54A that locks the base portion 53A, and a rotation preventing pin 55A of the base portion 53A. The base portion 53A can be fixed along the connection regulating body 51. The moving position of the adjusting body 51 is adjusted in the direction of the straight line L2 of the rotation center of the above-mentioned thread take-up member.

Further, it is preferable that the engaging portion 51A is disposed on a straight line L2 which is the shortest passing path from the thread take-up lever member 41 to the second thread guiding member 45 when the main shaft angle is about 70°, and the base portion 53A is preferably configured to be compatible with The above-mentioned straight line L2 moves in parallel.

Then, when the engagement portion 51A is brought into contact with the upper thread between the thread take-up lever member 41 and the second wire guiding member 45, the contact with the thread take-up lever member 41 and the second portion can be obtained. The upper line between the one-line guide members 44 has substantially the same effect.

(other)

Further, although the position adjusting mechanism 52 moves and adjusts the adjusting body 51 only in a certain straight direction, the position can be arbitrarily adjusted in the area E along the plane of the panel. At this time, the range of the spindle position angle at which the thread take-up member adjusts the thread take-up amount by the adjusting body 51 can be more easily changed.

10‧‧‧ Herringbone Sewing Machine (Sewing Machine)

10A‧‧‧arm

11‧‧‧ burs

12‧‧‧ needle stick

13‧‧‧ Needle bar hook line

20‧‧‧needle mechanism

21‧‧‧ Support shaft

22‧‧‧ shaking table

30‧‧‧Up and down mechanism

31‧‧‧ Spindle

32‧‧‧Rotary hammer

33‧‧‧ Needle bar

34‧‧‧ needle stick

40‧‧‧Rotary take-up rod device

41‧‧‧Thread take-up member

41a, 41b‧‧‧ hook (online hook)

41c‧‧‧ recess

42‧‧‧Rotating circular plate

43‧‧‧Connected shaft

44‧‧‧First line guiding member

45‧‧‧Second wire guiding member

46‧‧‧ protective cover

51‧‧‧ Adjusting body

51A‧‧‧Clock Department

52, 52A‧‧‧ position adjustment mechanism

53, 53A‧‧‧ base

53a‧‧‧ long hole

54, 54A‧‧‧ fixing screws

55, 55A‧‧‧Resale

60‧‧‧ panel

60A‧‧‧

61‧‧‧ openings

200‧‧‧ sewing machine

201‧‧‧Rotary take-up pole

202‧‧‧1st line guide

202A‧‧‧Threading hole

203‧‧‧2nd line guide

E‧‧‧ area

J‧‧‧top dead point

L1, L2‧‧‧ straight line

M‧‧‧Bottom dead

R‧‧‧fall point, arrow

T‧‧‧Online

Ta‧‧‧Rotary take-up rod curve

W‧‧‧ cut line

Fig. 1 is a side view of the herringbone sewing machine of the present embodiment as seen from the face side.

Fig. 2 is a cross-sectional view of the face along the W-W line of Fig. 1.

Fig. 3 is a view showing the state of the shortest path change from the first wire guiding member to the second wire guiding member in the present embodiment, and (A) to (G) respectively show the spindle angles of 80° and 90°. , 150 °, 180 °, 210 °, 240 °, 270 ° state.

Fig. 4 is a view showing the state of the shortest path change from the first wire guiding member to the second wire guiding member in the present embodiment, and (A) to (F) respectively show the spindle angles of 310° and 330°. , 0°, 30°, 60°, 70°.

Fig. 5 is a line diagram showing the shuttle curve corresponding to the spindle phase of the sewing machine and the curve T of the rotary take-up lever in the present embodiment.

Fig. 6 is an explanatory view for explaining the adjustment of the spindle angle range in the adjustment body of the embodiment to adjust the thread take-up amount on the thread take-up member.

Fig. 7 is an explanatory view showing the range in which the regulating body of the present embodiment is to be arranged.

Fig. 8 is an explanatory view showing an arrangement example of an adjustment body abutting on a line from the thread take-up lever member to the second wire guiding member in the second embodiment.

Fig. 9 is a line diagram showing a curve of a shuttle picker in a conventional sewing machine showing a change in the amount of the pull-in thread and a change in the amount of the thread taken by the thread take-up member.

Fig. 10 is a side view of the conventional herringbone sewing machine viewed from the face side.

Figure 11 shows the line guide of Patent Document 1, in which the upper line is often An illustration of the line guide.

10‧‧‧ Herringbone Sewing Machine (Sewing Machine)

12‧‧‧ needle stick

40‧‧‧Rotary take-up rod device

41‧‧‧Thread take-up member

41a, 41b‧‧‧ hook (online hook)

41c‧‧‧ recess

42‧‧‧Rotating circular plate

44‧‧‧First line guiding member

45‧‧‧Second wire guiding member

51‧‧‧ Adjusting body

51A‧‧‧Clock Department

52‧‧‧ Position adjustment mechanism

53‧‧‧ base

53a‧‧‧ long hole

54‧‧‧ fixing screws

55‧‧‧Resale

60‧‧‧ panel

L1‧‧‧ Straight line

R‧‧‧ arrows

T‧‧‧Online

W‧‧‧ cut line

X‧‧‧X axis

Z‧‧‧Z axis

Claims (5)

A rotary thread take-up lever device for a sewing machine, comprising: a thread take-up lever member, synchronously rotating with a rotation of a sewing machine main shaft, and having an upper thread hooking portion at a front end portion; the first wire guiding member penetrating from the upper wire supply source to the aforementioned thread take-up a wire member upper line; and a second wire guiding member penetrating from the wire take-up lever member to the upper thread of the bur, and by the rotation of the thread take-up lever member, performing a periodic pull-up of the upper thread in synchronization with the rotation of the spindle And the rotary take-up lever device of the sewing machine is characterized by comprising: an adjusting body which is generated by the rotation of the thread take-up lever member by the upper thread passing path centering on the first or second wire guiding member In the direction of the angle change, only one side of the direction abuts the upper line, thereby changing the length of the path of the upper line, adjusting the amount of thread taken by the thread take-up member to the upper thread; and the position adjustment mechanism, The position adjustment of the adjusting body is performed in a plane in which the upper line is rotated through the path, and the position adjusting mechanism is only before the dead point from the thread take-up lever member to the top dead center. Angular range of the inner shaft, the adjustment body within abut on the moving range of the line, adjusting the position of the adjustment member. A rotary take-up lever device for a sewing machine according to claim 1, wherein the adjustment body is provided to abut against an upper thread from the first wire guiding member to the thread take-up lever member. A rotary take-up lever device for a sewing machine according to claim 1, wherein the adjustment body is provided to abut against an upper thread from the thread take-up lever member to the second wire guiding member. The rotary take-up lever device of the sewing machine of claim 1, wherein the adjusting body is disposed to borrow from an upper line passing through a path between the thread take-up lever member and the first or second wire guiding member The line passing path from the first wire guiding member to the wire take-up lever member, or the wire take-up lever member to the second wire guiding member from the bottom dead center to the rotation before passing through the top dead center The line passes through the area where the path changes, and can be connected to the upper line. A rotary thread take-up lever device for a sewing machine, comprising: a thread take-up lever member, which couples a base end portion to a main shaft of a sewing machine, and has an upper thread hooking portion at a front end portion, which is linked to a main shaft of the sewing machine and is centered at a base end portion Rotation; the first wire guiding member is fixedly disposed below the rotation range of the thread take-up lever member at a front end of the sewing machine arm portion and is separated from the lead line passing through the rotation center on one side, and is threaded from the upper wire supply source to the aforementioned pick a wire rod member upper thread; and a second wire guiding member fixedly disposed to face the upper and lower passing paths of the needle bar at a lower end portion of the front end of the sewing machine arm portion below the rotation range of the thread take-up lever member, and the through-passing path The thread take-up lever member is connected to the upper thread of the bur, and is rotated by the aforementioned take-up lever member to perform the same with the aforementioned spindle Rotating synchronously pulling and relaxing the upper thread of the sewing machine, the rotary take-up lever device of the sewing machine is characterized by comprising: an adjusting body having an engaging portion for guiding the first wire guiding member or the second wire An upper line between the member and the thread take-up lever member abuts only from the one side of the upper thread; and a position adjusting mechanism is passed over the upper line between the first wire guiding member or the second wire guiding member and the thread take-up lever member The position of the adjustment body is adjusted in a plane in which the path changes due to the rotation of the aforementioned take-up lever member.