JP2015000082A - Embroidery machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an embroidery machine which uses one actuator to perform both of the operation of changing the lower limit position of a cloth presser plate and the operation of hooking a needle thread after cutting and storing it in a thread storage mechanism.SOLUTION: The upper and lower positions of an adjustment plate 34 are restricted within a distance a by the rotation within 180 degrees of an eccentric pin 36 on the front end face of a flange 33 rotationally driven by an actuator 23. A bearing 51a of a cloth presser drive link 48 fitted in an L-shaped groove 43 of the adjustment plate 34 is engaged with a horizontal groove 43c while embroidery is performed and thereby restricts the lower limit position of a cloth presser plate 19 within the distance a. When a thread is switched to any other color thread, a needle bar drive part 45 stops a needle bar 18 and is moved to an uppermost position, and the bearing 51a of the cloth presser drive link 48 is moved from the horizontal groove 43c to a vertical groove 43a and is raised to an uppermost position 57 together with a cloth presser drive part 46, namely the cloth presser plate 19. The actuator 23 is driven, and a hook 28a enters below the cloth presser plate 19 raised from an embroidery surface by a distance b to hook a cut needle thread.

Description

  The present invention relates to an embroidery machine that performs an operation of changing a lower limit position of a presser foot plate and an operation of hooking an upper thread after cutting and storing it in a thread storage mechanism.

  Conventionally, an embroidery machine including a multi-head machine or a single-head machine is known. Some embroidery machines have an arm portion and a head portion which are integrated or detachably combined with each other. In any case, operations of the needle bar, the cloth presser plate, the balance and the like of the head unit are regulated by the vertical driving force generated by the driving system of the arm unit.

  By the way, the basic movement of the cloth presser plate up and down is performed by drive transmission from the spindle cam, but the lower limit position (bottom dead center position) of the work clamp plate is changed according to the thickness of the work cloth to be embroidered. The adjustment operation is performed using an actuator. (For example, see Patent Documents 1 and 2.)

  Patent Document 1 provides an adjustment mechanism that adjusts the height of the bottom dead center position of the presser foot (cloth presser plate) on a plurality of sewing heads of a multi-head embroidery machine, and connects each adjustment mechanism with a connecting shaft. The connecting shaft is driven by an actuator.

  Patent Document 2 discloses a presser foot for a lifting mechanism that converts the rotational motion of the main shaft into the lifting motion of the presser bar in order to adjust the height of the bottom dead center position of the presser foot that moves up and down following the sewing speed. An adjustment mechanism for adjusting the height of the bottom dead center position is provided, and the adjustment mechanism is adjusted and driven by a stepping motor.

JP 2008-006088 A Japanese Patent Laid-Open No. 2000-042271

  By the way, an embroidery machine generally uses multi-colored threads in accordance with an embroidery pattern, except for embroidering with a single-colored thread, such as name-embroidered work clothes. Therefore, a needle bar having a number corresponding to the number of colors of threads used for embroidery is attached to the sewing head.

  Conventionally, when changing the color thread, the preceding upper thread is cut leaving a few centimeters from the needle hole, and the sewing machine arm selects the needle bar of the next color thread and continues the embroidery. Therefore, as the embroidery progresses, the upper thread that has been cut out from the needle hole comes out of the needle hole, and when trying to continue embroidery with the colored thread again, empty stitching occurs, and the embroidery becomes defective. There is a problem of becoming.

  In order to solve this problem, it is necessary to press the end of the cut upper thread into an appropriate position until the next use so that it does not come out of the needle hole. A separate actuator is required to operate the device.

  If the actuator is provided for the adjustment of the lower limit position (bottom dead center position) of the presser foot and the presser of the cut upper thread, not only the problem that the device on the machine arm side becomes large, Since the electric actuator is expensive, there is a problem that the cost increases.

  The present invention solves the above-described conventional problems, and includes one operation for both changing the lower limit position of the presser plate and for picking up the upper thread after cutting and storing it in the yarn storage mechanism. It is an object of the present invention to provide an embroidery machine that uses an actuator.

  In order to solve the above-described problems, an embroidery machine according to the present invention is an embroidery machine that changes the height of the lower limit position of the cloth presser plate in accordance with the thickness of a work cloth to be embroidered. A rotating shaft that is rotated by the power transmitted by the transmission mechanism, an eccentric pin provided on the tip surface of the rotating shaft, and engages with the eccentric pin and moves up and down within a predetermined range according to the rotation of the eccentric pin. An adjustment plate that moves to the center, an L-shaped groove in which a vertical groove, a square groove with R, and a horizontal groove are continuously formed on one surface of the adjustment plate, and a link to the cloth presser drive unit using the needle bar drive unit as a fulcrum Is connected to the link roller coaxially, and is inserted into the L-shaped groove. When the embroidery sewing is executed, the horizontal groove is reciprocated to follow the vertical position of the adjustment plate. When the embroidery sewing is not executed, the vertical groove is Follow the vertical position of the link roller in A cloth presser plate driving roller, and by controlling the electric actuator in accordance with the thickness of the work cloth to be embroidered, the needle bar driving section of the needle bar driving unit is controlled by the driving mechanism. The lower limit position of the vertical movement of the cloth presser plate transmitted from the link roller is adjusted to a height corresponding to the thickness of the work cloth to be embroidered.

  The embroidery machine further includes, for example, a hook mechanism that moves forward and backward by power transmitted from the electric actuator via the transmission mechanism, and the cloth presser plate is in a state where the embroidery sewing is not executed by the cloth presser plate driving roller. When located in the vertical groove portion of the L-shaped groove, it is above the upper limit position necessary for embroidery sewing together with the needle at the tip of the needle bar, regardless of the rotation of the eccentric pin and the vertical movement of the adjustment plate. And the hook of the hook mechanism is configured to hook the upper thread extending below the needle after cutting the upper thread of the needle and store it in the thread storage mechanism. In the embroidery machine, for example, the electric actuator is a pulse motor or a servo motor.

In the present invention, the upper thread after being cut is hooked and stored in the thread storage mechanism, so that when the preceding upper thread that has been cut out comes out of the needle hole and tries to continue embroidery with the colored thread again, the empty stitch is performed. This produces an effect of eliminating the problem that the embroidery becomes a defective product.
In addition, both the operation of changing the lower limit position of the presser foot and the operation of hooking the upper thread after cutting and storing it in the thread storage mechanism are performed using one actuator. It is not necessary to provide two actuators, and it is economical.

It is a perspective view which shows the external appearance of the embroidery machine which concerns on Example 1 of this invention. FIG. 3 is a perspective view illustrating an appearance of a part of the sewing machine arm of the embroidery machine according to the first embodiment and a sewing machine head that engages with the sewing machine arm. (a) is a figure which shows only the main part of the sewing machine arm and sewing machine head of the embroidery machine which concerns on Example 1, (b) is a figure which rotates the needle bar part drive part of a sewing machine arm 90 degrees to the left. (a) to (c) are diagrams showing the engagement relationship between the presser foot height adjusting plate of the sewing machine arm, the eccentric pin, and the bearing of the presser foot drive link, and (d) to (f) of the presser foot height adjusting plate. The figure which shows the operation | movement of the work clamp linked to operation | movement, (g)-(i) is a figure which shows the relationship between the operation | movement of a work clamp, and the operation | movement of a hook. (a) is a diagram showing the state of the needle and upper thread after the completion of one color embroidery step, (b) is a diagram showing the state where the upper thread is broken, and (c) is a state where the hook hooks the upper thread after cutting. FIG. 4D is a diagram showing a state where the hooked upper thread end is stored in the storage unit.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a perspective view showing an appearance of an embroidery machine according to Embodiment 1 of the present invention. As shown in FIG. 1, the embroidery machine 1 includes a sewing machine table 2 and an embroidery frame 3 that is widened in the center of the sewing machine table 2.

  A plurality (four in the example of FIG. 1) of lower hook portions 4 are provided inside the embroidery frame 3. After the embroidery medium is stretched, the embroidery frame 3 moves freely back and forth and left and right according to the program of the embroidery instruction.

  Further, a plurality of (four in the example of FIG. 1) sewing heads 5 are arranged at upper positions corresponding to the lower hook portion 4 while holding a head rail described later on the rail guide holding portion of the sewing machine arm 6.

  On the sewing machine table 2 of the embroidery machine 1, a gate comprising standing parts 7 (7 a, 7 b) provided at both left and right ends of the sewing machine table 2 and a bridge part 8 connecting these two standing parts 7. A mold frame is formed.

  Although not particularly shown, the four sewing arm 6 are fixed to the bridge portion 8 of the portal frame by a fixing portion provided on the back surface. One main shaft 9 is inserted through these four sewing arm 6.

  One end (right end in FIG. 1) of the main shaft 9 is pivotally supported by one of the portal frames 7 (7b) on one side (right in FIG. 1). In FIG. 1, one end of the main shaft 9 that is pivotally supported is hidden behind the standing portion 7b, but a pulley is fixed and a belt is stretched between the pulley of the motor (not shown). Yes. The main shaft 9 is rotationally driven by this motor.

  Further, a color change portion 11 for selecting a plurality of needle bars of the sewing head 5 is disposed on the same surface as the surface of the bridge portion 8 of the portal frame where the sewing machine arm 6 is fixed. The color change unit 11 selects a needle bar to be selected by moving the color change shaft 12 passing through the four sewing heads in the axial direction.

  Further, on the upper surface of the bridge portion 8 of the portal frame, an upper thread base 13 having a length in the longitudinal direction substantially corresponding to the arrangement width of the four sewing heads 5 is arranged. The upper thread stand 13 includes a flat tube holder 14 and a rod-like threader 15.

  FIG. 2 is a perspective view showing an appearance of a part of the sewing machine arm 6 of the embroidery machine 1 shown in FIG. 1 and the sewing machine head 5 engaged with the sewing machine arm 6. The sewing head 5 has nine needle bar portions. That is, the embroidery machine 1 can perform embroidery composed of nine colors of threads.

  The needle bar part includes a balance part 16, a tension part 17, a needle bar 18, and a cloth presser plate 19. A needle 21 is attached to the tip of the needle bar 18. In the tube holder 14 shown in FIG. 1, although not particularly shown, upper threads of respective colors used for embroidery wound around a tube such as a paper tube are placed.

  The thread pulled out from the tube is drawn out after being passed through the threader 14, passed through the balance hole of the balance section 16 of the sewing machine head 5 shown in FIG. 2, and further pulled out along the needle bar section. The needle 17 is pulled and stretched, and finally passed through the needle hole of the needle 21 at the tip of the needle bar 18. The sewing machine head 5 is slidably held by a rail guide holding portion which is hidden behind the sewing machine arm 6 in the drawing of the sewing machine arm 6 by a head rail 22 on the back surface.

  Although not specifically shown, the sewing machine arm 6 converts the rotation of the main shaft cam and the balance cam fixed to the main shaft 9 in FIG. 1 into a vertical driving force by each cam follower and an arm mechanism interlocked with the cam follower. Then, the vertical driving force is transmitted to the needle bar 18 and the balance 16 of the needle bar portion, and the needle bar 18 and the balance 16 are moved up and down.

  Although the details of the presser foot plate 19 will be described later, the presser foot 19 is fitted into the needle bar 18 of the needle bar portion from the outside, is linked to the vertical movement of the needle bar 18 and moves up and down, and is driven by the electric actuator 23 and is adjusted later. The lower limit position of the vertical movement is controlled by the mechanism.

  3A is a view showing only main parts of the sewing machine arm 6 and the sewing head 5 shown in FIG. 2 of the embroidery machine 1 shown in FIG. 1, and FIG. 3B is a needle bar of the sewing machine arm 6. As shown in FIG. It is a figure which shows a part drive part rotated 90 degree | times to the left.

  4 (a) to 4 (c) are views showing the engagement relationship between the presser foot height adjusting plate of the sewing machine arm 6, the eccentric pin, and the bearing of the presser foot drive link. FIGS. FIGS. 4 (g) to 4 (i) are diagrams showing the relationship between the operation of the presser foot plate 19 and the operation of the hook. FIG.

  FIG. 3A shows a drive source system 24 as a configuration of a main part that performs both the operation of changing the lower limit position of the presser foot of the sewing machine arm 6 and the operation of hooking the upper thread after cutting with a single actuator. And a needle bar portion drive unit 25, and a needle bar portion 26 is shown as a configuration of the main part of the sewing machine head 5.

  As shown in FIG. 3A, the drive source system 24 includes an electric actuator 23 comprising a stepping motor shown in FIG. 2, a toothed belt 27, a hook holding portion 28, a hook 29, a fulcrum support plate 31, and an eccentric pin shaft 32. , An eccentric pin flange 33 and an adjustment plate 34.

  The toothed belt 27 is reciprocally driven by being driven around a pulley with a rotating shaft of an electric actuator 23 and a toothed pulley 35 of an eccentric pin shaft 32, which are not visible in the figure. The hook holding portion 28 is fixed to the toothed belt 27 by the belt clamping portion 26a, and moves the hook 29 forward and backward as the toothed belt 27 reciprocates.

  The fulcrum support plate 31 has a U-shaped spine fixed to a casing (not shown) of the sewing machine arm 6 and rotatably holds the eccentric pin shaft 32 with both U-shaped arms. An eccentric pin 36 projects from the end face of the eccentric pin flange 33 of the eccentric pin shaft 32 as shown in FIGS.

  The eccentric pin 36 is fitted in a long groove 37 that is formed in a horizontally long lower portion of the adjustment plate 34. When the eccentric pin shaft 32, that is, the eccentric pin flange 33 rotates, the eccentric pin 36 rotates eccentrically.

  Due to the eccentric rotation of the eccentric pin 36, the adjustment plate 34 is restricted from moving in the lateral direction by a guide groove 38 shown in FIG. 3A and a guide pin 39 fitted in the guide groove 38, as shown in FIGS. As shown in b), the distance a between the lowest position 41 and the highest position 42 is moved up and down according to a predetermined control. The distance a is 5 to 7 mm, for example.

  The adjustment plate 34 is a member for adjusting the presser foot height of the presser foot plate, and when executing the embroidery, as shown in FIGS. It moves up and down based on the control corresponding to the thickness of the embroidery medium.

  As shown in FIGS. 3A and 4A, 4B, and 4C, the adjustment plate 34 has a vertical groove 43a, a square groove 43b with R, and a horizontal groove 43c on one surface thereof. An L-shaped groove 43 formed continuously is provided.

  On the other hand, the needle bar drive unit 25 shown in FIGS. 3A and 3B includes an arm shaft 44, a needle bar drive unit 45 fitted on the outside of the arm shaft 44, and a presser foot drive unit 46. ing. The needle bar drive unit 45 includes an engagement port 45a that engages with an engagement protrusion of the needle bar driven unit on the front surface, and an upper end portion of the needle bar drive unit drive arm 47 is engaged with the rear surface.

  The needle bar drive unit drive arm 47 is connected to a cam follower that is slidably in contact with a peripheral surface of a main shaft cam (not shown) that is connected to and fixed to the main shaft 9 shown in FIG. 6 is supported on the casing.

  The needle bar drive unit drive arm 47 expands the vertical movement transmitted from the cam follower to the force point shaft 47a and transmits it from the tip to the needle bar drive unit 45. An upper end portion of the presser foot drive link 48 is connected to the needle bar drive portion 45 by a bolt 49.

  A pair of bearings 51 (51a, 51b) are coaxially attached to the lower end of the presser foot drive link 48. The bearing 51 b is fitted in the horizontal groove 46 a on one side surface of the presser foot drive unit 46. On the front surface of the presser foot drive unit 46, an engagement protrusion 46b that engages with the presser foot driven portion of the needle bar portion is formed.

  The other bearing 51a of the pair of bearings 51 is fitted into the L-shaped groove 43 of the adjustment plate 34 as shown in FIGS. 4 (a), 4 (b), and 4 (c). 3A shows the shape of the L-shaped groove 43 of the adjusting plate 34 and the engagement relationship between the adjusting plate 34 and the eccentric pin shaft 32, the bearing 51a of the adjusting plate 34 and the presser foot drive link 48 is shown. And are shown separately.

  On the other hand, the needle bar portion 26 of the sewing machine head 5 includes the needle bar 18, the needle bar driven portion 52, the presser foot driven portion 53, and the presser foot holding portion 54. The needle bar driven portion 52 is fixed to the needle bar 18. The needle bar driven portion 52 includes an engaging protrusion 52a. The engagement protrusion 52 a is engaged with the engagement port 45 a of the needle bar drive unit 45 of the needle bar drive unit 25 of the sewing machine arm 6.

  The presser foot driven portion 53 is slidably fitted into the needle bar 18 below the needle bar driven portion 52. The presser foot driven portion 53 includes an engagement port 53 a at the upper end of the surface facing the sewing machine arm 6. The engagement port 53 a engages with the engagement protrusion 46 b of the presser foot drive unit 46 of the needle bar drive unit 25 of the sewing machine arm 6.

  In addition, the presser foot driven portion 53 has an engaging portion with the rotation stop shaft 55 on the opposite side of the upper end portion from the engaging port 53a. The rotation stopper shaft 55 has an upper end fixed to the needle bar driven portion 52 and a lower end slidably engaged with an engagement portion with the presser foot driven portion 53 so that the needle of the presser foot driven portion 53 is engaged. Rotation around the rod 18 is prohibited.

  The presser foot holding portion 54 is fixedly connected to the presser foot driven portion 53 via a short shaft 56, holds the presser foot plate 19 at the lower end, and moves up and down as the presser foot driven portion 53 moves up and down. Moving.

  The needle bar drive unit 45 of the needle bar unit drive unit 25 shown in FIGS. 3A and 3B moves to the uppermost position when the needle bar 18 is stopped to switch to another color thread. Thereby, the presser foot drive link 48 is also lifted to the uppermost position together with the presser foot drive unit 46.

  At this time, as described above, the adjustment plate 34 can move up and down only by the rotational eccentricity difference (the distance a between the lowest position 41 and the highest position 42) of the eccentric pin 36, whereas the work clamp drive link 48 As shown in FIG. 4C, the lower end bearing 51a is pulled up to the bearing uppermost position 57 that is separated from the lowermost position 41 by a distance b larger than the distance a.

  As a result, as described above, the adjustment plate 34 can move up and down only by the distance a between the lowermost position 41 and the uppermost position 42 shown in FIGS. 4 (a) and 4 (b). It is not possible to stay in the horizontal groove 43c portion of the L-shaped groove 43 of the adjustment plate 34 at the time, and moves to the vertical groove 43a portion along the R-shaped square groove 43b as shown in FIG. 4 (c). .

  Correspondingly, the presser foot plate 19 is also moved to the lowest position shown in FIGS. 4D and 4E via the bearing 51a, the bearing 51b, the horizontal groove 46a, the presser foot drive unit 476, and the presser foot drive unit 53. 58 and the uppermost position 59 move from a movement position within a distance a to an embroidery non-execution position 61 at a distance b far away from the upper position.

  In this state, even if the actuator 23 is driven and the toothed belt 27 reciprocates and the eccentric pin shaft 32 rotates, that is, even if the eccentric pin 36 attached to the eccentric pin flange 33 rotates eccentrically, that is, Even if the adjustment plate 34 moves up and down, the bearing 51a is fitted in the vertical groove 43a of the L-shaped groove 43, so that the cloth presser driven portion 52, that is, the cloth presser plate 19 is in the uppermost position 61 shown in FIG. Will not move from.

  At this timing, the actuator 23 is driven, the toothed belt 27 is reciprocally rotated, and the hook holding portion 28, that is, the hook 28a is driven forward and backward. As a result, as shown in FIGS. 4 (f) and 4 (i), the hook 28a operates so as to sink into the gap of the distance b below the needle insertion hole 58 of the presser foot plate 19 and is cut through the needle 21 of the upper thread. The end extending below the needle hole is hooked.

  FIG. 5A is a view showing the state of the needle 21 and the upper thread 62 after the embroidery step for one color is completed, and FIG. 5B is a state immediately before the upper thread 62 is cut by the movable blade 63 of the lower hook portion 4. FIG. 5 (c) is a diagram showing a state in which the upper thread 62 after being cut is hooked by the hook 28a, and FIG. 5 (d) is a state in which the hooked upper thread end portion 62a is stored in the yarn end storage portion 64. FIG. In this way, the hook 28a stores the hooked upper yarn end portion in the yarn end storage portion.

  While the needle bar portion 26 shown in FIG. 3 (a) is being embroidered, the needle bar drive portion 45 of the needle bar portion drive portion 25 shown in FIGS. 3 (a) and 3 (b) moves downward and moves up and down. . As shown in FIGS. 4A and 4B, the bearing 51a is engaged with the horizontal groove 43c of the L-shaped groove 43 and slides in the horizontal direction. As a result, the cloth presser plate 19 is restrained in the lower limit position at a position corresponding to the vertical position of the adjustment plate 34 to suppress the embroidery medium.

  Here, when the actuator 23 is driven by the control mechanism corresponding to the thickness of the embroidery medium, the rotation distance of the toothed belt 27 according to the drive, that is, the rotation angle of the eccentric pin shaft 32, that is, the eccentric pin 36. Vertical movement according to the amount of eccentric rotation is transmitted to the adjustment plate 34.

  The adjustment plate 34 is moved up and down by a horizontal groove 43c of the L-shaped groove 43, bearings 51a and 51b of the presser foot drive link 48, a horizontal groove 46a of the presser foot drive portion 46, a presser foot drive portion 46, an engaging protrusion 46b, It is transmitted to the presser foot plate 19 through the engagement port 53 a and the presser foot driven portion 53. Thereby, the lower limit position of the cloth presser plate 19 can be changed at an arbitrary timing.

  Thus, according to the first embodiment of the present invention, both the operation of changing the lower limit position of the presser plate and the operation of hooking the upper thread after cutting and storing it in the thread storage mechanism are performed by one actuator. It is possible to provide an embroidery machine that uses the embroidery machine.

  INDUSTRIAL APPLICABILITY The present invention can be used for an embroidery machine that performs an operation of changing the lower limit of the cloth presser plate and an operation of hooking an upper thread after cutting and storing it in a thread storage mechanism.

DESCRIPTION OF SYMBOLS 1 Embroidery machine 2 Sewing machine table 3 Embroidery frame 4 Lower hook part 5 Sewing machine head 6 Sewing arm 7 (7a, 7b) Standing part 8 Bridge part 9 Main shaft 11 Color change part 12 Color change axis 13 Upper thread stand 14 Pipe holder 15 Threading DESCRIPTION OF SYMBOLS 16 Balance part 17 Extension part 18 Needle bar 19 Cloth presser plate 21 Needle 22 Head rail 23 Actuator 24 Drive source system 25 Needle bar part drive part 26 Needle bar part 27 Toothed belt 28 Hook holding part 28a Belt clamping part 29 Hook 31 Supporting point support plate 32 Eccentric pin shaft 33 Eccentric pin flange 34 Adjustment plate 35 Pulley with teeth 36 Eccentric pin 37 Long groove 38 Guide groove 39 Guide pin 41 Lowermost position 42 Uppermost position 43 L-shaped groove 43a Vertical groove 43b Square groove with R 43c Horizontal Groove 44 Arm shaft 45 Needle bar drive unit 45a Engagement port 46 Work clamp drive unit 46a Horizontal groove 46b Engagement protrusion 47 Needle bar drive part drive arm 47a Force point shaft 48 Presser foot drive link 49 Bolt 51 (51a, 51b) Bearing 52 Needle bar driven part 52a Engagement protrusion 53 Work clamp cover Driving portion 53a Engagement port 54 Work clamp plate holding portion 55 Anti-rotation shaft 56 Shaft 57 Bearing top position 58 Bottom position 59 Top position 61 Embroidery non-execution position 62 Upper thread 63 Movable blade 64 Yarn end storage section

Claims (3)

In the embroidery machine that changes the height of the lower limit position of the cloth presser plate according to the thickness of the work cloth to be embroidered,
An electric actuator;
A rotating shaft that rotates by transmitting the power of the electric actuator by a transmission mechanism;
An eccentric pin provided on the tip surface of the rotating shaft;
An adjustment plate that engages with the eccentric pin and moves up and down within a predetermined range according to the rotation of the eccentric pin;
An L-shaped groove in which a vertical groove, a square groove with R, and a horizontal groove are continuously formed on one surface of the adjustment plate;
It is coaxially connected to the link roller linked to the cloth presser drive unit with the needle bar drive unit as a fulcrum, and is fitted into the L-shaped groove. A cloth presser plate driving roller that follows and follows the vertical position of the link roller in the vertical groove portion when embroidery sewing is not performed;
Comprising a drive mechanism consisting of
By controlling the electric actuator according to the thickness of the work cloth to be embroidered, the lower limit of the vertical movement of the cloth presser plate transmitted from the link roller of the needle bar drive unit via the drive mechanism Adjusting the position to a height corresponding to the thickness of the work cloth to be embroidered;
An embroidery machine characterized by that. A hook mechanism that advances and retreats by power transmitted from the electric actuator via the transmission mechanism;
When the cloth pressing plate driving roller is in the vertical groove portion of the L-shaped groove when the embroidery sewing is not executed, the cloth pressing plate is related to the rotation of the eccentric pin and the vertical movement of the adjusting plate. It is in a position above the upper limit position required for embroidery sewing with the needle at the tip of the needle bar,
The hook of the hook mechanism hooks the upper thread extending below the needle after cutting the upper thread of the needle and stores it in a thread storage mechanism.
The embroidery machine according to claim 1. The embroidery machine according to claim 1 or 2, wherein the electric actuator is a pulse motor or a servo motor.