TWI395851B - Sewing machine pressing device - Google Patents

Description

Sewing machine pressing device

The present invention relates to a pressing device which is provided with a pressing member which is lowered to a needle plate provided on a sewing machine seat, and which holds a cloth to be sewn between the needle plate and the needle plate; and a cutter mechanism is attached thereto The pressing member cuts the end edge of the sewn fabric.

As a form of an industrial sewing machine, a wrist-shaped flat seam sewing machine (hereinafter referred to as a delivery wrist sewing machine) is provided. The delivery wrist sewing machine has a thin cylindrical (wrist) sewing machine seat extending in the direction of the lower part of the sewing machine frame, and a sewing machine arm extending in a direction different from the sewing machine seat at the upper portion of the sewing machine frame . This sewing machine is used, for example, for the seams of briefs, shorts, and trousers. The joint means that the end edges of the two pieces of fabric to be sewn are overlapped at a predetermined width, and are sandwiched between the needle board on the sewing machine seat and the pressing member that is lowered onto the needle board, and then the base from the sewing machine base is applied. The end portion is implemented toward the front end portion.

In the pusher for sending the wrist-shaped sewing machine, a cutter mechanism for cutting the end edge of the sewing fabric is provided (see, for example, Japanese Patent Publication No. Hei 7-57272). The pusher includes a pusher body and two pressing feet that extend toward the front of the pusher body (the upstream side in the feeding direction of the sewing fabric). These two pressing feet are parallel to each other. The cutter mechanism includes a fixed cutter fixed to one of the pressing feet and a movable cutter attached to the other pressing foot.

The fixed cutter and the movable cutter are opposed to each other before being set at the needle drop position of the pusher body (the lowered position of the needle). The movable cutter reciprocates while being slidably coupled to the fixed cutter by the drive of the cutter swing shaft from the inside of the sewing machine arm. The sewing fabric is such that the end sides of the sewn side are joined together, and are fed between the two pressing feet while standing on the needle board, and the end side is cut after reaching the sliding position of the fixed cutter and the movable cutter. Qi. The sewn cloth is overlapped up and down at a predetermined width, and is fed into the needle drop position and stitched. The operator does not need to borrow the work to fine-tune the overlap width, and can stably perform the joint according to the substantially fixed slit width.

The splicing system as described above is desired to be carried out even in a box-shaped double-stitch sewing machine (hereinafter referred to as a box-shaped sewing machine) which has a large sewing fabric as a sewing object and has a function to support the sewing machine. Sewing the flat upper box of the fabric. The pusher having the cutter mechanism provided in the wrist-wound sewing machine can also be applied to the box-shaped sewing machine, and by this application, the joint can be implemented.

The box-shaped sewing machine has a structure in which the extending direction of the sewing machine arm and the extending direction of the sewing machine seat are the same and the feeding direction of the sewing fabric is orthogonal to the extending direction of the sewing machine seat, and has a structure different from that of the wrist-shaped sewing machine. Further, in the box-shaped sewing machine, an auxiliary member such as a wire loop device is often disposed on the upper portion of the front side of the pressing member. Therefore, in the case where the pressing member having the cutter mechanism provided in the wrist-shaped sewing machine is applied to the box-shaped seat, it is necessary to work on the transmission mechanism from the inside of the sewing machine arm to the movable cutter.

The applicant of the present invention first proposes a box-shaped sewing machine which is provided with a transmission mechanism suitable for a box-shaped sewing machine corresponding to the difference in configuration as shown above, whereby a pressing member having a cutter mechanism can be applied. In order to attach the pressing member to the lower end, the box-shaped sewing machine includes a push rod that is suspended from the front end portion of the sewing machine arm, and a push barrel that fits the pressing rod to the coaxial shaft. The upper end of the drive cylinder extending toward the inside of the sewing machine arm is coupled to the cutter swing shaft, and the lower end of the drive cylinder protruding to the outside of the sewing machine arm is coupled to the movable cutter. The cutter swing shaft is a shaft that repeatedly rotates inside the sewing machine arm. The drive cylinder is repeatedly rotated coaxially with the pressing rod in response to repeated rotation of the cutter swing shaft, and the movable cutter reciprocates in response to repeated rotation of the drive cylinder.

However, in the box-shaped sewing machine configured as described above, it is necessary to secure the arrangement space of the above-mentioned auxiliary mechanism on the upper portion of the front side of the pressing member, and further to arrange the transmission mechanism for the movable cutter because the pressing rod protrudes from the front end portion of the sewing machine arm. Since the length is long, the pressing member attached to the lower end of the pressing bar may be vibrated by the reciprocating movement of the movable cutting blade in accordance with the action of the cutting mechanism.

The vibration of the pressing member is mainly composed of the moving direction of the movable cutter, that is, the direction intersecting the feeding direction of the sewing fabric, and occurs remarkably when the thick fabric is sewn. In the case where this vibration occurs, the seizing of the sewn fabric between the pressing member and the needle plate becomes unstable, and there is a problem that the quality of the sewn product is lowered.

The vibration of the pressing member can be suppressed by increasing the rigidity of the pressing bar that supports the pressing member. However, by increasing the diameter of the pressing rod to increase the rigidity, the size in the vicinity of the support portion of the pressing rod is restricted, and the rigidity of the pressing rod is changed to increase the rigidity, because the price of the product is increased, so it is not Better countermeasures.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a sewing machine pressing device capable of reliably suppressing vibration of a pressing member accompanying the operation of a cutting mechanism by a simple configuration, and sewing the cloth by a cutter mechanism. The end edges are trimmed so that the joints made under the overlap of each other can be well performed.

The pressing device for the sewing machine according to the first aspect of the present invention is characterized by (the first item of the patent application).

In addition, the anti-vibration member of the sewing machine of the second aspect is characterized in that the anti-vibration member includes the first and second abutting surfaces which are inclined opposite to each other such that the upstream side of the feeding direction is opened. And abutting the different parts of the pressing member.

Further, in the pressing device for a sewing machine according to the third aspect, the vibration-proof member according to the second aspect includes a base and is fixed to an end portion of the sewing machine arm, and the first support member is attached to the base at a position changeable position. The seat has the first abutting surface; and the second supporting member is attached to the base at a position changeable position, and has the second abutting surface.

Further, in the pressing device for a sewing machine according to the fourth aspect, the first supporting member or the second supporting member is detachably attached to the end portion side of the sewing machine arm or the feeding direction. Pedestal.

In the pressing device of the sewing machine according to the first aspect of the present invention, since the vibration-proof member attached to the sewing machine arm comes into contact with the pressing member from both sides in the feeding direction of the sewing cloth, the pressing of the cutting mechanism can be surely suppressed. The vibration of the piece can be well combined.

Further, in the pressing device for the sewing machine according to the second aspect of the present invention, the abutting surface of the vibration-proof member that abuts against the pressing member is an inclined surface that is inclined opposite to each other so that the upstream side of the feeding direction is opened. Not only in the right and left direction, but also the vibration of the pressing member in the rear direction is effectively suppressed, and the joint can be satisfactorily performed.

Further, in the pressing device for a sewing machine according to the third aspect of the present invention, the first supporting member including the first abutting surface and the second supporting member having the second abutting surface are fixed to the base of the sewing machine arm. The seat is individually adjusted in position, and the abutment state of the pressing member can be easily made appropriate, and a good vibration-proof effect can be achieved.

Further, in the pressing device for a sewing machine according to the fourth aspect of the present invention, the present invention can easily perform the vibration-proof member by pulling out the first supporting member or the second supporting member toward the distal end side or the feeding direction of the sewing machine arm. Excellent results such as installation and removal.

In order to make the above objects, features, and advantages of the present invention more comprehensible, the following detailed description is made in conjunction with the accompanying drawings.

Hereinafter, the present invention will be described in detail based on the drawings showing embodiments. Fig. 1 is an external perspective view showing the overall configuration of a sewing machine equipped with a pressing device according to the present invention. In the following description, the upper and lower sides of the first drawing are used, and the paper surface side of the first drawing is referred to as the front side, and the back side of the paper surface is referred to as the rear surface.

The sewing machine shown in Fig. 1 includes a double loop sewing machine having a box-shaped sewing machine holder 1, and includes a leg 2 and a sewing machine arm 3. The foot 2 is disposed above the right end of the sewing machine base 1 and is allowed to stand substantially perpendicularly to the upper surface. The sewing machine arm 3 and the upper end of the leg 2 are connected to each other and extend to the left in parallel with the sewing machine base 1.

The needle bar 30 and the pressing rod 31 are supported at the front end portion of the sewing machine arm 3. The needle bar 30 is moved up and down by the operation of a needle bar driving mechanism (not shown) provided inside the sewing machine arm 3. The needle bar 30 protrudes below the sewing machine arm 3, and a plurality of pins 4, 4, ... are attached to the lower end portion of the needle bar 30 via the needle holder 40. These needles 4, 4, ... rise and fall in response to the vertical movement of the needle bar 30.

The pressing rod 31 protrudes below the sewing machine arm 3 on the rear side of the needle bar 30, and the pressing member 5 is attached to the lower end portion of the pressing rod 31. The pressing rod 31 is supported by the inside of the sewing machine arm 3 so as to be movable up and down. The pressing rod 31 is moved up and down by an appropriate operation of the operator, and the pressing member 5 is raised and lowered in response to the vertical movement of the pressing rod 31.

On the upper surface of the sewing machine base 1, the needle plate 10 is placed so as to correspond to the lowered positions of the needles 4, 4, ... and the pressing member 5. The needle plate 10 is a rectangular flat plate that is long in the front and rear, and is attached to the sewing machine base 1 by a plurality of fixing screws (not shown).

On the needle plate 10, the lowered pressing members 5 as described above are overlapped, and the sewing cloth is sandwiched between the pressing member 5 and the needle plate 10. The feed of the sewing fabric is applied to the sewing fabric by the feed teeth 11, 11, ... (see Fig. 2). The feed teeth 11, 11, ... perform a combination of forward and backward movements and up and down movements by the operation of the feed mechanism provided inside the sewing machine base 1, and repeat the movement through the respective feed perforations 12, 12 in the upward movement. (refer to Fig. 3), which protrudes above the needle plate 10 and moves rearward, and then moves downward to move forward. By this operation, intermittent feeding is applied to the sewing fabric on the needle board 10 rearward.

Fig. 2 is a perspective view of the left side of the pusher 5 from the vicinity of the mounting portion, and Fig. 3 is a perspective view from the right front side. The pressing member 5 includes a pressing member body 50 fixed to the lower end of the pressing rod 31, and two pressing legs 51 and 52. The pressing feet 51, 52 and the left and right sides of the pressing member body 50 are connected to each other and extend parallel to each other toward the front. The pressing feet 51 and 52 are opposed to each other at an appropriate interval on the front side of the pusher body 50 to form an introduction path for sewing the cloth.

These pressing feet 51 and 52 are provided with a cutter mechanism that fixes the cutter 7a and the movable cutter 7b. The fixed cutter 7a is a plate-shaped cutter that is fixed to the pressing foot 51 on the left side. The fixed cutter 7a is inserted into a holding hole 53 provided in a rectangular cross section of the pressing foot 51 and fixed. In Fig. 2, the base portion of the fixed cutter 7a that protrudes toward the outer side of the pressing foot 51 is shown. The fixed cutter 7a has a blade at a front end that protrudes toward the inside of the introduction path between the pressing feet 51, 52.

The movable cutter 7b is inserted into a holding hole 54 of a rectangular cross section provided on the right side of the pressing foot 52. The movable cutter 7b is movable in the left-right direction under the guidance of the holding hole 54. The movable cutter 7b has a blade at a front end that protrudes toward the inside of the introduction path between the pressing feet 51, 52. The base of the movable cutter 7b protrudes to the right side of the pressing foot 52 by an appropriate length and is fixed to the cutter holder 75.

The movable cutter 7b reciprocates in the left-right direction by the operation of the cutter driving mechanism (see FIG. 4) which will be described later. The blade at the tip end of the reciprocating movable cutter 7b is slidably engaged with the blade of the fixed cutter 7a in the introduction path between the left and right pressing legs 51, 52.

In Figs. 2 and 3, the needles 4, 4, ... are also illustrated. The needles 4, 4, ... are lowered toward the rear side of the left and right pressing feet 51, 52, and reach the inside of the sewing machine holder 1 by the pusher body 50 and the pinhole (not shown) provided in the needle plate 10. In the introduction path between the pressing feet 51, 52, the two pieces of the sewn fabric are overlapped at the ends, and are introduced in a vertically standing posture above the needle board 10. The fixed cutter 7a and the movable cutter 7b cut the end edges of the sewing fabric that reaches the sliding position. The cloth to be cut is fed backward by the operation of the feed teeth 11, 11, ..., and is vertically overlapped by the action of the pusher body 50, and is fed to the lowered position of the needles 4, 4, ... and stitched. .

Further, as shown in Fig. 1, a guide 55 for guiding the cutting piece for sewing the cloth is attached to the upper portion of the pressing member 5, and the left end surface of the sewing machine arm 3 supporting the pressing member 5 is attached via the bracket 57. The suction pipe 56 of the cutting piece for sewing the cloth guided by the guide 55 is sucked, and the guide 55 and the suction pipe 56 are omitted in FIGS. 2 and 3 .

As shown in Fig. 1, the suction pipe 56 is provided with a suction port that opens to the left rear portion of the pusher 5, and the cutting piece of the sewing cloth guided by the guide 55 is sucked by the suction port and removed. The bracket 57 for mounting the suction pipe 56 can be opened by centering on the hinge pin 58 provided at the rear in the up-and-down direction, by which the suction pipe 56 is moved to the waiting position away from the pressing member 5. The suction pipe 56 moved to the waiting position does not hinder the attachment and detachment of the sewing cloth to the needle board 10.

Fig. 4 is a perspective view of the drive mechanism of the movable cutter 7b. The 9-series cutter swing axis in Fig. 4 is shown. The cutter swinging shaft 9 is erected and supported by the inside of the front end portion of the sewing machine arm 3, and is repeatedly rotated within a predetermined angle range by the transmission from the main shaft of the sewing machine. At one end portion of the cutter swing shaft 9, a swing arm 90 that protrudes outward in the radial direction is fixed. The swing arm 90 swings in response to repeated rotation of the cutter swing shaft 9.

The drive mechanism of the movable cutter 7b is provided with a cylindrical drive cylinder 70. The drive cylinder 70 is provided with a large diameter portion having a large diameter at one end portion in the axial length direction, and the large diameter portion integrally protrudes the cutter attachment arm 71 toward the radially outer side. As shown in Fig. 4, the drive cylinder 70 has the side of the cutter mounting arm 71 as a lower portion, and is supported to be freely rotated by a support cylinder 73 penetrating the lower wall of the sewing machine arm 3.

The upper portion of the drive cylinder 70 protrudes toward the inside of the sewing machine arm 3, and at this end, the transmission arm 72 is mounted. The end of the transmission arm 72 extending radially outward is coupled via a transmission link 91 having ball joints 92, 92 at both ends and a swing arm 90 of the cutter swing shaft 9. The transmission arm 72 swings in response to the swing of the swing arm 90 transmitted via the transmission link 91, and the drive cylinder 70 repeatedly rotates in an angular range corresponding to the repeated rotation of the cutter swing shaft 9. The ball joints 92, 92 at both ends of the transmission link 91 are provided to absorb changes in the relative positions of the swing arm 90 and the transmission arm 72 that swing around the different axes.

The cutter mounting arm 71 at the lower end of the drive cylinder 70 is located outside the sewing machine arm 3, and has a fixing seat 71a extending downward at the front end portion. In the fixing base 71a, the mount 74 is fixed, and the cutter holder 75 provided at the lower portion of the mount 74 fixes the base of the movable cutter 7b as described above. As described above, the movable cutter 7b is held by the pressing foot 52 on the right side of the pusher 5 so as to be reciprocable. The cutter attachment arm 71 swings in response to repeated rotation of the drive cylinder 70, and the movable cutter 7b reciprocates.

The cutter holder 75 is energized downward by a coil spring 76 provided on the mount 74. The coil spring 76 pushes down the movable cutter 7b attached to the cutter holder 75, and presses the inside of the introduction path of the pusher 5 against the fixed cutter 7a. The movable cutter 7b that reciprocates is slidably engaged with the fixed cutter 7a in a state of being pressed by the coil spring 76, and the end edge of the sewing fabric is surely cut.

Further, in Fig. 4, in order to clearly show the attachment state of the movable cutter 7b, the attachment direction of the movable cutter 7b is set to be different from the actual direction. The movable cutter 7b and the cutter swing shaft 9 extend in parallel, and reciprocate in a direction transverse to the sewing machine arm 3 of the cutter swing shaft 9, that is, in the left-right direction.

The drive cylinder 70 is fitted with and holds a cylindrical support bushing 32 into which the push rod 31 is inserted. The lower end of the pressing rod 31 protrudes to the outside of the sewing machine arm 3. As shown in Figs. 2 and 3, the pressing member 5 is attached to the protruding end. The pressing rod 31 is moved in the vertical direction by the support of the support bushing 32, and the pressing rod 31 is moved by an appropriate operation of the operator, whereby the pressing member 5 is raised and lowered.

In the second and third figures, in order to clearly show the attachment state of the pusher 5 which is a characteristic part of the present invention, the mounting seat 74, the cutter mounting arm 71, the coil spring 76, and the like which are continuous with the upper portion of the cutter holder 75 are omitted. An illustration of the constituent elements of the cutter drive mechanism.

The pressing device of the present invention is disposed on the rear side of the pusher 5 attached as described above, and the vibration-proof member 6 is disposed to prevent vibration of the pusher 5. Fig. 5 is an external perspective view showing the vibration-proof member 6, and Fig. 6 is an exploded perspective view showing the vibration-proof member 6.

As shown in FIG. 6, the vibration isolation member 6 includes a base 60, a first support member 61, and a second support member 62. The susceptor 60 is a flat-plate member having a suitable thickness, and a flange 63 for fixing is integrally protruded on one surface thereof. As shown in Fig. 2, the base 63 is fitted into a recess 32 provided in the front end surface of the sewing machine arm 3, and is fixed for fixing the two fixing holes 64 and 64 formed through the flange 63. The screw locks the screw hole provided in the bottom surface of the recess 32, thereby being fixed along the lower surface of the front end portion of the sewing machine arm 3. Further, this fixing is performed by moving the suction pipe 56 to the above-described waiting position.

The support arm 65 is integrally connected to the other surface of the susceptor 60 (the downward surface when fixed to the sewing machine arm 3). The support arm 65 extends obliquely downward from the rear side of the base 60, is bent in the middle, and extends in parallel with the upper surface of the sewing machine base 1. As shown in Fig. 3, when the base 60 is attached, it is placed on the pressing member 5. Back side. The lower surface of the lower portion of the base 60 corresponding to the front side of the support arm 65 and the lower portion of the base portion of the support arm 65 are flat seating surfaces, and the first support members 61 and the second of the vibration-damping members 6 are attached to the seat surfaces. Support member 62.

The first support member 61 includes a fixing flange 66 , and the second support member 62 includes a fixing flange 67 . The first support member 61 abuts the fixing flange 66 and the seating surface provided on the base 60, and a fixing screw (not shown) passes through the fixing holes 66a and 66a provided at two places of the fixing flange 66. Then, the fixing screws are locked and fixed to the screw holes provided on the seat surface. The second support member 62 abuts the fixing flange 67 and the seating surface provided on the base of the support arm 65, and passes a fixing screw (not shown) through the fixing holes 67a provided at two places of the fixing flange 67. And 67a, the screws are locked and fixed to the screw holes 65a and 65a provided on the seat surface.

The vibration-proof member 6 is configured by integrally assembling the susceptor 60, the first support member 61, and the second support member 62 as described above. The first support member 61 is an arm-shaped member that extends to the right and extends downward as shown in FIG. 3 in a state in which the susceptor 60 is attached to the sewing machine arm 3. The second support member 62 is an arm-shaped member that extends forward as shown in FIG. 3 in a state in which the base 60 is attached to the sewing machine arm 3.

As shown in FIGS. 5 and 6 , the first abutting surface 68 is provided at the distal end of the first supporting member 61 , and the second abutting surface 69 is provided at the distal end of the second supporting member 62 . FIG. 5 is a view showing a state in which the vibration-damping member 6 is attached to the sewing machine arm 3 as seen from the front, and the first abutting surface 68 and the second abutting surface 69 are separated from each other in the left-right direction as the front side (the sewing cloth is advanced). The upstream side of the direction is opened, and the inclined faces which are inclined opposite to each other are opened, and the abutting faces 68 and 69 are provided on the respective contact faces of the rear side of the pusher body 50 so as to be inclined at the same inclination toward the same direction. Abut.

The vibration-damping member 6 attached as described above is supported by the first support member 61 from the left rear side, and the second support member 62 supports the pusher body 50 of the pusher 5 from the right rear side. As described above, when the sewing material is cut by the reciprocating operation of the movable cutter 7b, the pressing member 5 vibrates in the left-right direction due to the reaction force from the sewing cloth, but the left and right sides of the vibration-proof member 6 are used. The support is effectively suppressed. Therefore, even in the case of sewing a thick sewn fabric, when the reaction force from the sewn fabric is large, the vibration of the pusher 5 can be suppressed, and the joint can be stably performed.

Further, the first support member 61 and the second support member 62 of the vibration-proof member 6 have the first abutting surface 68 and the second abutting surface 69 which are inclined as shown in the front, and are provided in the same manner as the pusher body 50. The inclined surface abuts. By the abutment of the vibration-proof member 6, the vibration of the pusher 5 in the backward direction can be suppressed not only in the left and right directions but also in a more stable joint. The opening angle of the first abutting surface 68 and the second abutting surface 69 can be set in accordance with the degree of vibration in the left and right direction and the rear direction, and is preferably 90°.

The vibration-proof member 6 includes a base 60 and first and second support members 61 and 62. The first and second support members 61 and 62 can fix the base 60 to the fixing holes 66a and 66a and the fixing holes 67a and 67a and the respective fixing holes. Adjust the position within the range of the gap between the screws. This position adjustment is performed by appropriately bringing the contact state between the first abutting surface 68 and the second abutting surface 69 and the pusher body 50, and the vibration of the pusher 5 can be more effectively suppressed, and thus, it is not correct. The first abutting surface 68 and the second abutting surface 69 of the anti-vibration member 6 require high shape accuracy and positional accuracy.

As shown in FIG. 6, the fixing holes 66a and 66a provided in the fixing flange 66 of the first supporting member 61 have a notch shape that opens to the right side of the fixing flange 66. Therefore, after the first support member 61 is loosened by the fixing screws passing through the fixing holes 66a and 66a, the fixing flange 66 is slid toward the opposite side of the opening of the fixing holes 66a and 66a, whereby the base 60 can be fixed still. The lower end side of the sewing machine arm 3 is pulled out and removed, and can be attached to the base 60 fixed to the sewing machine arm 3 in the reverse order. In this manner, the operator can easily attach and detach the vibration-proof member 6 by attaching and detaching the first support member 61. Further, instead of providing the notches in the fixing holes 66a and 66a of the fixing flange 66 of the first supporting member 61, the fixing holes 67a and 67a provided in the fixing flange 67 of the second supporting member 62 may have a fixing flange. The notch shape of the side opening before 67. According to this configuration, like the first support member 61, the second support member 62 is loosened by the fixing screws 67a, 67a, and then the fixing flange 67 is directed to the opposite side of the opening of the fixing holes 67a, 67a. By sliding, it can be pulled out and removed in the feeding direction of the sewing fabric under the fixing base 60, and can be attached to the base 60 fixed to the sewing machine arm 3 in the reverse order. Further, the fixing holes 66a and 66a of the fixing flange 66 of the first supporting member 61 and the fixing holes 67a and 67a of the fixing flange 67 of the second supporting member 62 may each have a notch shape.

Although the present invention has been disclosed in its preferred embodiments, it is not intended to limit the invention, and the invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application attached.

1. . . Sewing machine base

2. . . Foot column

3. . . Sewing arm

4. . . needle

5. . . Pressing member

6. . . Anti-vibration member

7a. . . Fixed cutter

7b. . . Movable cutter

10. . . Needle plate

12. . . Feed perforation

30. . . Needle bar

31. . . Press bar

40. . . Needle clip

50. . . Pressing body

51, 52. . . Pressing the foot

53. . . Hold hole

54. . . Hold hole

55. . . Guides

56. . . Suction pipe

57. . . bracket

58. . . Joint pin

61. . . First support member

62. . . Second support member

65. . . Support arm

70. . . Drive cylinder

75. . . Cutter holder

Fig. 1 is an external perspective view showing the overall configuration of a sewing machine equipped with a pressing device according to the present invention.

Fig. 2 is a perspective view of the pressing member from the left front side in the vicinity of the mounting portion.

Fig. 3 is a perspective view of the pressing member from the right front side in the vicinity of the mounting portion.

Figure 4 is a perspective view of the drive mechanism of the movable cutter.

Fig. 5 is a perspective view showing the appearance of the vibration isolating member.

Fig. 6 is an exploded perspective view showing the vibration-proof member.

1. . . Sewing machine base

3. . . Sewing arm

4. . . needle

5. . . Pressing member

6. . . Anti-vibration member

7a. . . Fixed cutter

7b. . . Movable cutter

10. . . Needle plate

12. . . Feed perforation

30. . . Needle bar

31. . . Press bar

40. . . Needle clip

50. . . Pressing body

51, 52. . . Pressing the foot

53. . . Hold hole

54. . . Hold hole

61. . . First support member

62. . . Second support member

65. . . Support arm

70. . . Drive cylinder

75. . . Cutter holder

Claims (7)

A pressing device for a sewing machine, comprising: a pressing member attached to a lower end of a pressing rod suspended from an end portion of the sewing machine arm, and clamping a sewing cloth between the needle plate and the needle plate provided at the sewing machine seat; a movable cutter is provided on the pressing member and reciprocates in a direction intersecting the feeding direction of the sewing fabric; and the fixed cutter is slidably coupled to the movable cutter; and the vibration-proof member is mounted on The sewing machine arm abuts against a portion of the pressing member from the rear side in the feeding direction, and suppresses vibration of the pressing member on both sides in the moving direction of the movable cutter. The pressing device for a sewing machine according to the first aspect of the invention, wherein the anti-vibration member is provided with first and second abutting faces which are inclined opposite to each other such that the upstream side of the feeding direction is opened, and The different parts of the pressing member abut. The pressing device for a sewing machine according to the second aspect of the invention, wherein the vibration-proof member includes a base and is fixed to an end of the sewing machine arm; and the first support member is attached to the base at a position changeable position, and The first abutting surface is provided, and the second supporting member is attached to the base at a position changeable position, and has the second abutting surface. The pressing device for a sewing machine according to the third aspect of the invention, wherein the first supporting member or the second supporting member is detachably attached to the end side of the sewing machine arm or the feeding direction The pedestal. The pressing device of the sewing machine of claim 3, wherein the first supporting member or the second supporting member has a fixing a hole having a plurality of screw holes corresponding to the fixing holes, and a fixing screw passing through the fixing hole is locked to the screw hole, and the first supporting member or the second supporting member is attached to the hole The pedestal. The pressing device for a sewing machine according to claim 5, wherein the fixing hole of the first supporting member or the second supporting member has a notch shape. The pressing device for a sewing machine according to any one of claims 2 to 4, wherein the different portions of the pressing member are inclined surfaces having the same inclination as the inclination of the first and second abutting surfaces.