TW201802320A - Sewing machine - Google Patents

Abstract

An object of the present invention is to provide a sewing machine which allows a defect in which a position of an edge of clothing fabric after a cut is partially displaced from a seam to be suppressed more easily and reliably than before. A sewing machine includes a fabric presser 5 adapted to hold clothing fabric to be sewn, from above, in which the fabric presser 5 includes: a fabric presser body 51 located above a fabric feeding path, a needle location hole 53 configured to penetrate the fabric presser body 51 in an up and down direction and adapted to allow needles moving up and down for sewing to pass, a cutting unit 7 located closer to a source side than the needle location hole 53 in a fabric feeding direction, and adapted to cut at least one end of the clothing fabric sent into the fabric presser 5 and form an edge along the fabric feeding direction on the cut end, and a fabric guide 8 fixed to the fabric presser body 51 between the needle location hole 53 and the cutting unit 7 and equipped with a guide plane 821 adapted to guide the edge of the clothing fabric to below the needle location hole 53 after a cut made by the cutting unit 7, and the fabric guide 8 is configured to be movable relative to the fabric presser body 51 in a direction intersecting the guide plane 821.

Description

Sewing machine

This invention relates to the sewing machine provided with the cutting part which cuts a grey fabric before sewing.

The grey fabric pressing member includes a cutting part, for example, the cutting part cuts the ends of the grey fabrics that are sent in sequence, forms an end edge on the grey fabric, and overlaps the ends of the grey fabric so that one of the two formed edges is formed. It is located above, and the other side is below, and this overlapped part is fed under the needle drop hole provided in the grey fabric pressing member and then sewn. For example, there is a sewing machine which can form a sewn product having a cylindrical portion. For example, the sewing machine described in Japanese Patent Publication No. Sho 59-34457.

The cutting unit includes a fixed blade fixed to the main body of the grey fabric pressing member, and a movable blade provided to be able to approach and separate from the fixed blade. Each blade has a blade peak at the tip. When the movable blade is close to the fixed blade, the cutting edge of each blade can be overlapped to cut the grey fabric like a scissors.

However, as shown in Figure 9, there will be The seam S stitched at the edge KUe (especially the upper fabric KU which is positioned above at the time of sewing) causes a problem in that the seam S is partially displaced to form a defective part X. The state shown in the figure is a defective portion X showing a state where the end edge Kue of the upper fabric KU protrudes from the seam S portion. On the other hand, there is also a state where the end edge Kue of the upper fabric KU is partially recessed with respect to the seam S. Once these conditions occur, the appearance of the sewn products will be poor. In response to the problem, by changing the position of each blade with respect to the main body of the gray fabric pressing member, the horizontal (right and left) cutting position offset adjustment of the gray fabric (upper gray fabric KU and lower gray KL) is performed (for example, the applicant's " FD-62DRY Instruction Manual ").

However, this adjustment complicates the work because the positions of the blade edges of the fixed blade and the movable blade must be adjusted separately. In addition, due to expansion and contraction of the grey fabric after cutting, the position of the end edge of the grey fabric may be shifted at a point in time when it reaches below the needle drop hole. Therefore, the problems described above cannot be reliably suppressed.

Therefore, the present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a sewing machine which can more easily and surely suppress problems such as a deviation between the edge of the grey fabric and the seam after cutting.

The sewing machine of the present invention has a grey fabric pressing member for pressing the grey fabric before sewing from above. The grey fabric pressing member includes: a grey fabric pressing body positioned above the grey fabric conveying path; The needle drop hole for the needle that moves up and down is located at the transfer source side of the grey fabric conveying direction than the above needle drop hole. At least one end of the grey fabric fed into the grey fabric pressing part is cut to form an end edge along the grey fabric conveying direction. A cutting portion at the one end; and an induction induced by the end edge of the grey fabric cut by the cutting portion toward the lower part of the pinhole, which is fixed to the main body of the grey fabric between the pinhole and the cutting portion. The gray fabric guide is movable with respect to the gray fabric pressing body in a direction crossing the induction surface with respect to the gray fabric pressing body.

According to this configuration, the gray cloth cut by the cutting unit can be guided by the gray cloth guide, and can be sent below the needle drop hole of the gray cloth pressing member. In addition, the grey cloth guide is moved toward the grey cloth pressing body, and the grey cloth guiding position can be changed to a direction intersecting the guiding surface. Therefore, only by moving the gray fabric guide, the end edge of the cut gray fabric can be aligned with the sewing position, and the adjustment is simple.

The induction surface may be a plane along the direction in which the grey fabric is conveyed.

According to this configuration, the grey fabric fed to the lower part of the pin drop hole can be surely guided along the flat induction surface.

In addition, the gray fabric guide may be fixed to the gray fabric pressing body by a bonding means, and the bonding means may perform fixing and unfixing operations from above.

According to this configuration, the operator (operator of the sewing machine, etc.) can operate the coupling means from above, and can easily adjust the position of the grey fabric guide relative to the grey fabric pressing body at any time.

As described above, the present invention can more simply and surely suppress the problem of the offset between the edge of the grey fabric and the seam after cutting.

2‧‧‧arm

3‧‧‧base

4‧‧‧ lever

5‧‧‧ Grey Fabric Pressing Parts

6‧‧‧ Needle plate

7‧‧‧Cutting Department

8‧‧‧ Grey cloth guide

9‧‧‧ Grey cloth induction section

51‧‧‧grey cloth pressing body

52L‧‧‧Left presser foot

52R‧‧‧ Right presser foot

53‧‧‧Pinhole

54‧‧‧Guide Space Department

55‧‧‧Guide

71‧‧‧ fixed blade

72‧‧‧ movable blade

81‧‧‧ support

82‧‧‧ Guide groove protrusion

83‧‧‧Screw

92‧‧‧Left guide

93‧‧‧Right guide

511‧‧‧ support

821‧‧‧ induction surface

8M‧‧‧ Intersects the induction surface

Fig. 1 is a perspective view showing a sewing machine according to this embodiment.

Fig. 2 is a perspective view showing the gray fabric pressing member of the sewing machine according to this embodiment as viewed from above.

Fig. 3 is a perspective view of the grey fabric pressing member viewed from the front and upwards together with other members (lower guides) positioned in front of the grey fabric pressing member.

Fig. 4 is a perspective view showing the grey fabric presser of the sewing machine according to this embodiment as viewed from the front and the bottom.

Fig. 5 is a perspective view of the sewing machine according to the present embodiment, viewed from the front and the bottom, showing a state in which the pressing plate is removed by the gray cloth pressing member.

FIG. 6A is a schematic view showing a longitudinal cross-section of a state where the grey fabric is cut and dropped from the front to the rear (from the source side toward the transfer side of the grey fabric conveying direction).

FIG. 6B is a schematic diagram showing a longitudinal cross-section of the state where the grey fabric is cut and fallen from the front to the rear (from the source side toward the conveying side of the grey fabric conveying direction).

FIG. 6C is a schematic diagram showing a longitudinal cross-section of the state where the grey fabric is cut and fallen from the front to the rear (from the source side toward the transfer side of the grey fabric conveying direction).

FIG. 6D is a schematic view showing a longitudinal cross-section of the state where the grey fabric is cut and fallen from the front to the rear (from the source side toward the transfer side of the grey fabric conveying direction).

Fig. 6E shows the conveyance from the front to the rear (from the grey fabric conveying direction) The source side is toward the conveyer side.) The schematic view of the vertical cross section showing the grey fabric cut and lying down.

FIG. 7A shows a front view (a figure shown in the front) of a modification of the grey cloth guide (upper grey cloth guide).

FIG. 7B is a bottom view showing a modified example of the grey cloth guide (upper grey cloth guide).

FIG. 7C is a front view showing another modified example of the grey cloth guide (upper grey cloth guide).

FIG. 7D shows a bottom view of another modification of the grey cloth guide (upper grey cloth guide).

Fig. 8A is a front view showing a modified example of the grey cloth guide (upper grey cloth guide) together with a part of the grey cloth pressing member.

Fig. 8B is a front view showing a modified example of the grey cloth guide (upper grey cloth guide) together with a part of the grey cloth pressing member.

Fig. 8C is a front view showing a modification of the grey cloth guide (upper grey cloth guide) together with a part of the grey cloth pressing member.

Fig. 9 is a schematic plan view showing a state where the end edge of the upper fabric and the seam part of the seam are displaced with the sewing start side as the upper side and the sewing end side as the lower side, causing a problem.

Next, an embodiment of the present invention will be described. In the following descriptions, the forward-rearward direction is represented by the direction toward the operator (operator) performing sewing, and the direction away from the operator is rearward. In addition, the performance regarding up, down, left, and right is indicated by the direction when the operator looks at the sewing machine. In addition, the inside and outside expressions are based on the center side in the left-right direction as the inside and the opposite side as the outside. In addition, there are some places where the grey fabric is conveyed in a direction-based manner. The transfer source side of the grey fabric transfer direction is the front side, and the transfer side is the rear side.

The sewing machine 1 of the present embodiment is a warp beam type flat interlock sewing machine. An example of the sewing machine 1 is sewing of a sleeve portion or a crotch portion of a sportswear, and a pants portion of an inner garment. As shown in FIG. 1, this sewing machine 1 is provided with an arm 2 extending in one direction on an upper portion of a frame. A lower portion of the frame is provided with a cylindrical base 3 extending in a direction different from the arm 2 in the front-rear direction. The front end portion of the arm 2 is bent at a substantially right angle, and faces the upper surface of the front end portion of the base 3. The arm 2 supports a pressing rod 4 extending downward. The pressure lever 4 is configured to be movable up and down. The support part 511 (refer to FIG. 2) of the grey fabric pressing member is inserted through the lower end portion of the pressing rod 4, thereby attaching the grey fabric pressing member 5.

The grey fabric presser 5 is a member that presses each grey fabric KL and KU (see FIGS. 6A to 6E) before sewing from above. The grey fabric pressing member 5 comes into contact with the needle plate 6 positioned on the upper surface of the machine base 3 as the pressing rod 4 is lowered. The grey fabrics KL and KU are held between the lowered grey fabric presser 5 and the needle plate 6. In this state, each of the grey fabrics KL and KU is transferred from the front to the rear by a transfer mechanism (not shown) that is infested and moved back and forth on the needle plate 6 and is moved up and down through the needle drop hole 53. (Not shown, and the trajectory NL of the four needles moving up and down is indicated by two dotted lines in FIG. 6E.) The sewing is performed.

The grey fabric pressing member 5 mainly includes: a grey fabric pressing body 51, Pinhole 52, cutting section 7, gray fabric guide (upper gray fabric guide) 8.

The grey fabric pressing body 51 is positioned above the grey fabric conveying path on the needle plate 6 from the front toward the rear. The front side portion of the grey fabric presser main body 51 is divided into left and right, and two presser feet (left presser foot 52L and right presser foot 52R) which are parallel to each other and extend forward are formed.

In addition, in the grey fabric pressing body 51, a needle drop hole 53 extending in the left-right direction as viewed in a plane is formed through the grey fabric pressing body 51 at a position corresponding to a position below the needle.

The grey fabric as the object to be sewn (although this embodiment has two pieces of lower grey fabric KL and upper grey fabric KU, but for example, one piece of grey fabric can be used when sewing into a tubular shape, and the two end edges of the grey fabric can be sewn) FIG. 6A shows a state in which a portion including the edges of the grey fabrics KL and KU is sandwiched between the left and right presser feet 52L and 52R and the throat plate 6. Then, it is carried under the needle drop hole 53 by the conveying mechanism, and sewing is performed by a plurality of needles arranged side by side in the left-right direction.

The cutting section 7 is located on the front side of the grey fabric pressing body 51 than the pin drop hole 53 (the side of the grey fabric conveying direction), cuts at least one end of the grey fabrics KL and KU fed into the grey fabric pressing member 5, and cuts along the grey fabric. The end edge in the conveying direction is newly formed at the one end. The cutting section 7 of this embodiment cuts the opposite ends of the grey fabrics KL and KU fed to the grey fabric pressing member 5 and re-forms the edges along the grey fabric conveying direction on the opposite ends of the grey fabrics KL and KU, respectively. . However, this is only an example, and the cutting part 7 is not limited to the form of cutting two pieces of grey fabric KL, KU. For example, the cutting part 7 may cut only one piece of upper fabric KU. The cutting section 7 includes a fixed blade 71 and a movable blade. Moving blade 72. As shown in FIGS. 2 and 4, the fixed blade 71 is fixed to the left presser foot 52L. The movable blade 72 is held outside the right presser foot 52R. The movable blade 72 transmits a driving force from the blade driving arm 73 (see FIG. 1), and reciprocates in a 7M direction in the left-right direction. Between the left and right presser feet 52L, 52R is a guide space portion 54 forming a front opening. At the intermediate portion of the guide space portion 54 in the front-rear direction, the fixed blade 71 and the movable blade 72 are positioned so as to face each other. Each of the grey fabrics KL and KU is erected as shown in FIG. 6A, and the guide space portion 54 is introduced in a state of being overlapped on the needle plate 6. As shown in FIG. 6B, when the grey fabrics KL and KU move between the positions held by the fixed blade 71 and the movable blade 72, the overlapping of the respective edges of the fixed blade 71 and the movable blade 72 is more effective than that of the respective blades 71 and 72. The part protruding upward is cut. In addition, sewing is provided to the remaining portions below the cutting edges 71, 72.

In the grey fabric pressing body 51, a guide groove 55 is formed to be closed upward and open downward and forward and backward as shown in FIG. 4 among the portions located rearward than the fixed blade 71 and the movable blade 72. The inner surface of the guide groove 55 is curved, and as shown in FIG. 5, the wide dimension (the dimension in the left-right direction) is reduced toward the rear side and connected to the needle drop hole 53. As shown in FIG. 6C to FIG. 6E, the grey fabrics KL and KU whose ends are aligned by the cutting portion 7 are moved so that the grey fabrics KL and KU are turned down, and a portion including the edge of the lower grey fabric KL and A portion including the end edge of the upper grey cloth KU is in a state of overlapping in a band shape. In this state, the respective grey fabrics KL and KU are fed below the needle drop hole 53.

Below the grey fabric pressing body 51, as shown in FIG. 4, Two pressure plates 56L and 56R are attached to the left and right presser feet 52L and 52R, respectively. As shown in FIGS. 6A to 6E, the lower surface of the left platen 56L is in contact with the lower fabric KL, and the lower surface of the right platen 56R is in contact with the upper fabric KU. A part of each of the pressure plates 56L and 56R protrudes below the guide space portion 54 and the guide groove 55. For example, the left pressure plate 56L includes a protruding portion 56La as shown in FIG. 4. As shown in FIGS. 6B to 6D, the protruding portion 56La is positioned above the lower grey fabric KL passing through the grey fabric pressing member 5, so that the lower grey fabric KL can be brought close to the needle plate 6. As described above, each of the gray fabrics KL and KU shows the overlapping state from FIGS. 6A and 6B by the above-mentioned protruding shapes of the pressure plates 56L and 56R. As shown in FIGS. 6C to 6E, the lower gray fabric KL can be located at The lower fabrics KL and KR are lowered so that the upper fabrics KU are positioned above.

Further, in the grey fabric pressing member 5, the grey fabric induction portion 9 before the cutting is positioned more forward than the cutting portion 7. As shown in FIG. 3, the pre-cut gray cloth induction portion 9 includes a lower guide 91, a left guide 92, and a right guide 93. The lower guide 91 is a flat shape that fixes the front portion to the base 3 and the rear portion extends in the front-rear direction. A part of the front end portion of the front portion of the lower guide 91 is located in the guide space portion 54. The left guide 92 is fixed to the left presser foot 52L and protrudes from the guide space portion 54. The right guide 93 is fixed to the right presser foot 52R and protrudes from the guide space portion 54. According to the pre-cutting gray fabric induction portion 9 configured as described above, as shown in FIG. 6A, the lower gray fabric KL and the upper gray fabric KU can be introduced along the left and right sides of the lower guide 91, and the gray fabrics KL and KD can be introduced in an overlapping state The guide space section 54 can smoothly cut each grey fabric KL and KU by the cutting section 7.

The upper fabric guide 8 as the gray fabric guide of the present invention is a left presser foot fixed to the gray fabric pressing body 51 between the needle drop hole 53 and the cutting portion 7 (this embodiment is a part of the gray fabric pressing body 51). 52L). The upper fabric guide 8 has an induction surface 821 that guides the end edges of the gray fabrics KL and KU after the cutting of the cutting portion 7 to below the needle drop hole 53.

As shown in FIG. 5, the upper fabric guide 8 is L-shaped when viewed from the bottom, and includes a plate-shaped support portion 81 extending in the left-right direction, and a plate-shaped support portion extending rearwardly from an inner end portion of the support portion 81. Guide groove protrusion 82. In addition, the upper fabric guide 8 of this embodiment is shown in Figs. 6C and 6D. When viewed from the front and rear, it also has an L-shape in which the support portion 81 and the guide groove projection 82 are orthogonal to each other. The support portion 81 is embedded in a groove portion formed in the left presser foot 52L so that the lower surface becomes the same surface as the lower surface of the left presser foot 52L. Furthermore, the lower surface of the support portion 81 may not be limited to the same surface, and may be positioned higher than the lower surface of the left presser foot 52L (see FIG. 5 when the support portion 81 is retracted). The support portion 81 has a constant width direction in the front-rear direction and is slidable relative to the groove portion of the left presser foot 52L.

The upper gray fabric guide 8 is fixed to the gray fabric pressing body 51 by a screw 83 which is a combination means. The support portion 81 includes a screw hole formed with an internal thread, and a screw 83 penetrating the left presser foot 52L is locked into the screw hole. The upper cloth guide 8 can be loosened with the screw 83, and moved relative to the cloth pressing body 51 in a direction 8M (left and right direction in this embodiment) that intersects the induction surface 821, and is fixed to the grey cloth with the screw 83 locked.压 件 Principal51. Since it can be moved as described above, the grey fabric pressing body 51 In the middle, the through-hole through which the screw 83 penetrates is a long hole (not shown) extending in the left-right direction.

The guide groove protruding portion 82 is positioned in the guide groove 55 in a range spanning from the rear of the self-cutting portion 7 to the front of the needle drop hole 53. Since the guide groove 55 gradually decreases in size from the front to the rear, the guide groove protrusion 82 also cooperates with this. As shown in FIG. 5, the guide groove 55 has a substantially triangular shape when viewed from the side that gradually decreases in height from the front to the rear. shape. The inner surface of the guide groove protruding portion 82 is an induction surface 821 and is a plane along the direction in which the grey fabric is conveyed. The guide surface 821 can be moved in a direction 8M (left-right direction) orthogonal to the guide surface 821 by sliding the support portion 81 with respect to the left presser foot 52L. 6D and FIG. 6E show the end edges produced by the cutting surface 7 abutting on the upper surface KU on the induction surface 821. The upper edge of the upper grey fabric KU trimmed with the fixed blade 71 and the movable blade 72 of the cutting portion 7 is moved along the flat induction surface 821, and the end edge of the upper grey fabric KU is induced to the needle drop hole without being offset from side to side. 53 Perform sewing. As described above, the upper edge of the upper fabric KU fed below the needle drop hole 53 is guided along the plane of the induction surface 821, and the upper fabric KU can be surely induced. Further, as shown in FIG. 5, the rear end of the induction surface 821 is located at an approach position which is slightly separated from the pin drop hole 53. Therefore, the induction surface 821 can be sewn while maintaining the positioning state in the left-right direction of the edge of the upper fabric KU. Thereby, the position of the end edge of the gray fabric KU positioned by the gray fabric guide 8 is unlikely to be offset after leaving the induction surface 821.

6A to 6E are diagrams showing changes in the states of the respective grey fabrics KL and KU of the grey fabric pressing member 5. The following describes the order in which the grey fabrics are transferred. FIG. 6A shows a position more forward than the cutting part 7 of the guide space part 54, FIG. 6B shows a position more than the cutting part 7 of the guide space part 54, and FIG. 6C shows a position further behind the cutting part 7 of the guide space part 54, and FIG. 6D shows The position near the front end of the guide groove 55, and 6 (e) shows the position near the rear end of the guide groove 55.

The lower grey fabric KL and the upper grey fabric KU are shown in FIG. 6A, and are overlapped by a predetermined width by an operator or the like from the edge (the edge before being trimmed by the cutting unit 7). Each of the grey fabrics KL and KU is introduced into the guide space portion 54 in a state where the overlapped thick portions stand on the needle plate 6. The lower grey cloth KL and the upper grey cloth KU introduced into the guide space portion 54 reach a position between the fixed blade 71 and the movable blade 72 of the cutting portion 7 as shown in FIG. 6B, and a new one is formed by cutting the respective blades 71 and 72. The edge is then sent to the rear as shown in Figures 6C and 6D.

While the respective grey fabrics KL and KU are being transported as described above, the lower grey fabric KL pressed by the left presser foot 52L is pushed downward by the protrusion 56La of the left pressure plate 56L protruding into the guide space portion 54 and along the upper surface of the needle plate 6 Lodging. On the other hand, the upper grey cloth KU pressed by the right pressure plate 56R is laid down along the inner surface of the guide groove 55, and is superposed on the upper portion of the lower grey cloth KL on the needle plate 6, and is sent below the needle drop hole 53 in this state.

In the present embodiment, the grey fabric presser 5 includes an upper grey fabric guide 8. Therefore, as shown in FIG. 6E, the cutting portion 7 is formed at the end edge of the upper fabric KU to abut against the induction surface 821 of the upper fabric guide 8 to end the lodging of the upper fabric KU. And sew in this state. With this, it is possible to surely suppress the problem that the edge of the cut gray fabric and a part of the seam are misaligned due to conventional knowledge.

According to the gray fabric pressing member 5 of the present embodiment configured as described above, the gray fabric guide 8 can be guided to the gray fabric (especially the upper gray fabric KU) cut by the cutting section 7 while being laid, and sent to the gray fabric pressing member 5 Below the pinhole 53. In addition, when the upper fabric guide 8 is moved relative to the gray fabric pressing body 51, the induction position of the upper fabric KU can be changed to a direction intersecting the induction surface 821. Therefore, only the upper fabric guide 8 is moved so that the sewing position coincides with the end edge of the upper fabric KU, and can be easily adjusted.

For example, even if the upper fabric guide 8 is slid to the left boundary, the end edge of the upper fabric KU is still recessed with respect to the seam formed in the sewing product, and the fixed blades 71 and It is necessary to adjust the position of the movable blade 72 with respect to the grey fabric presser main body 51 for adjustment. On the other hand, when the edge of the upper fabric KU protrudes from the seam of the sewing product, the upper fabric guide 8 can be adjusted separately. Therefore, compared with the case where the adjustment can be made separately, since only the screw 83 is loosened to slide the upper fabric guide 8, the adjustment can be extremely simple compared with the conventional method.

However, the problem that the edge of the upper fabric KU after cutting is partially offset from the seam can be presumed to occur after the cutting portion 7 cuts each of the gray fabrics KL and KU, and then the left and right positions of the end of the upper fabric KU are generated. A tremor, or a partial extension of the upper cloth KU. There are differences in flexibility and elasticity due to the type of the gray fabric, and it can be understood that the above-mentioned problem is caused when, for example, the type of the gray fabric KU used for sewing is changed. When the grey fabric presser 5 according to this embodiment is used, it is extremely advantageous in the case where sewing can be performed by changing the kind of grey fabric as described above.

In addition, as a design treatment of the sewing product, even when the end edge of the upper fabric KU protrudes or sinks into the seam, it can be easily performed by sliding the upper fabric guide 8. Therefore, the point of expanding the type of sewing is also increased. Extremely favorable.

In addition, the screw 83 of the coupling means can be used for fixing and unfixing operations (locking operation and loosening operation) from above. Therefore, once the gray fabric presser 5 is removed from the sewing machine 1, the operator can perform the upper fabric guide 8 with respect to the gray fabric presser body at any time by operating only the screw 83 with a screwdriver or the like without moving from the needle plate 6. 51 position adjustment.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention.

For example, the shape of the bottom surface of the gray fabric guide is not limited to the L shape as the upper gray fabric guide 8 of the embodiment described above, but may include an induction surface 821 and a support portion 81 for movably supporting the induction surface 821. In addition, even if the positional relationship of the guide groove protruding portion 82 with respect to the front and rear directions of the guide portion 81 is L-shaped, the guide groove protruding portion 82 may be located from the inside of the support portion 81. A shape in which the square end portion extends forward (see FIGS. 7A and 7B). In addition, for example, a T-shape (see FIG. 7C and FIG. 7D) or a rectangle may be used. The induction surface 821 is not limited to the flat surface of the embodiment described above, and may be a curved surface. Alternatively, the bottom surface of the groove portion formed in the gray fabric guide may be provided as the induction surface 821.

In addition, the shapes of the grey cloth guide viewed from the front and the rear are also the upper cloth guide 8 of the embodiment described above, which is not limited to the L shape, for example For example, it can be a horizontally long rectangle.

Furthermore, in the upper fabric guide 8 of the above embodiment, although the support portion 81 and the guide groove protruding portion 82 are orthogonal, they may intersect at an acute angle as shown in FIG. 8A. It can also be shown as an obtuse angle crossing as shown in FIG. 8B. Moreover, although the guide groove protrusion part 82 of the said embodiment is a flat plate shape, it may be a curved plate shape like FIG. 8C.

In addition, the movable direction of the grey cloth guide is the upper grey cloth guide 8 of the above embodiment. .

Furthermore, the coupling means for fixing the grey cloth guide to the grey cloth pressing body 51 is not limited to the screw 83 of the embodiment described above. For example, jigs and the like can be fixed by various means without being accompanied by penetration.

5‧‧‧ Grey Fabric Pressing Parts

7‧‧‧Cutting Department

8M‧‧‧ Intersects with induction surface

9‧‧‧ Grey cloth induction section

51‧‧‧grey cloth pressing body

52L‧‧‧Left presser foot

52R‧‧‧ Right presser foot

53‧‧‧Pinhole

54‧‧‧Guide Space Department

55‧‧‧Guide

71‧‧‧ fixed blade

72‧‧‧ movable blade

81‧‧‧ support

82‧‧‧ Guide groove protrusion

83‧‧‧Screw

92‧‧‧Left guide

93‧‧‧Right guide

511‧‧‧ support

821‧‧‧ induction surface

Claims (3)

A sewing machine has a grey fabric pressing member for pressing the grey fabric before sewing from above. The grey fabric pressing member includes: a grey fabric pressing body positioned above a grey fabric conveying path; a needle drop hole penetrating the up and down direction of the grey fabric pressing body, Sew to pass the needle that moves up and down; the cutting part is located at the transfer source side of the grey fabric conveying direction than the needle drop hole, and cuts at least one end of the grey fabric fed into the grey fabric pressing part to form an end edge along the grey fabric conveying direction At the one end; and a gray fabric guide having a main body of the gray fabric pressing member fixed between the needle drop hole and the cutting portion, and guiding an end edge portion of the gray fabric cut by the cutting portion toward the lower side of the needle drop hole With respect to the induction surface, the gray fabric guide can move relative to the gray fabric pressing body in a direction crossing the induction surface. The sewing machine according to item 1 of the patent application range, wherein the induction surface is a plane along the direction in which the grey fabric is conveyed. For example, the sewing machine described in the first or second scope of the patent application, wherein the gray fabric guide is fixed to the gray fabric pressing body by a bonding means, and the bonding means is an operation for fixing and unfixing from above. Make.