TW201631237A - Feed dog replacement device and sewing machine provided with same - Google Patents

Abstract

To provide a feed dog replacement device which is capable of reliably attaching a feed dog to a feed mechanism of a sewing machine without fine adjustments by a sewing worker and which is capable of easily detaching the feed dog by one operation, and to provide the sewing machine including the feed dog replacement device. A feed dog replacement device mounts a feed dog on and dismounts the feed dog from a feed mechanism of a sewing machine, and includes a feed base that moves horizontally and vertically in response to a movement of the feed mechanism, a feed dog base that is mounted on the feed base such that a mounting position is adjustable, and the feed dog that is positioned at and attached to the feed dog base. The feed dog base includes a fitting recessed portion for positioning the feed dog. The feed dog includes a mounting portion that is fitted to the fitting recessed portion. The feed dog replacement device further includes a replacing lever that rotates between an attachment position where the feed dog base and the mounting portion of the feed dog are attached to each other and a detachment position where they are detached from each other.

Description

Feed tooth loading and unloading device and sewing machine having the same

The present invention relates to a feed tooth loading and unloading device for loading and unloading a feed tooth to a feed mechanism of a sewing machine, and more particularly to a feed tooth loading and unloading device capable of exchanging feed teeth with a simple operation and a sewing machine having the feed tooth loading and unloading device .

There is known a feed mechanism in a sewing machine which allows a feed tooth to be ejected from a long hole formed in a needle plate (up and down movement) and moved in a front-rear direction (horizontal movement), and is transferred by pressure. The cloth that the foot and the needle board hold.

Conventionally, as shown in FIG. 10(a), the feed tooth 51 is detachably fixed to the feed mechanism (feeding table 53) by a fastening member 52 such as a screw.

In order to perform sewing more efficiently, in a straight seam, a zigzag seam, or the like, it is necessary to exchange the needle plate and the feed tooth having the pinhole corresponding to the sewing.

However, since the feed tooth is fixed to the feed mechanism below the needle plate, the needle plate is required each time the feed tooth is exchanged. Removed.

The feed tooth system is formed upward from the long hole for the feed tooth formed on the needle plate, but in order not to be caught in the cloth, the gap between the feed hole long hole and the feed tooth of the needle plate must be as small as possible.

Therefore, if the feed tooth is not correctly attached to the feed mechanism, there is a fear of contact with the needle plate during the operation of the feed tooth.

Therefore, when exchanging the feed teeth, first, the needle plate is removed, the feed teeth are temporarily fixed to the feed mechanism, and the needle plate is attached. Then, while confirming the gap between the feed tooth and the long hole for the feed pin of the needle plate and the needle drop position, the position of the feed tooth is positioned, and then the needle plate is removed without moving the feed tooth.

Finally, the fastening member that officially locks the feed teeth fixes it to the feed mechanism, then mounts the needle plate again, and reconfirms the positional relationship between the needle plate and the feed teeth. If the position of the feed tooth is shifted during the formal locking, the needle plate needs to be removed again to re-adjust the feed tooth.

Thus, the exchange operation of the feed teeth is very cumbersome and time consuming, and there is a problem that the sewing operator cannot easily perform the exchange work.

In order to solve these problems, for example, an exchange cloth feeding device for a sewing machine shown in Fig. 10 (b) has been previously known, and the exchange cloth feeding device is provided with a feed tooth 58 and a feed table 63, the feed The tooth 58 has a tooth portion 54 and a square-shaped shank portion 55 having a positioning pin 56 at a position below the tooth portion 54 below the shank portion 55, and an end of the shank portion 55 opposite to the tooth portion 54 is formed as a semi-cylindrical surface 57. The feeding table 63 has a holding member 60 and a cylindrical magnet 62 thereon, and the holding member 60 is engaged with the semi-cylindrical surface 57 of the feeding tooth 58, and has a semi-cylindrical surface 57 locked thereto. Inclined surface 59; The cylindrical magnet 62 has a hole 61 that is fitted into the positioning pin 56. In the exchange cloth feeding device, the tangent of the semi-cylindrical surface 57 and the inclined surface 59 is parallel to the upper surface of the feeding table 63. It is perpendicular to the axis of the shank 55 (refer to Patent Document 1).

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Shigong Sho 47-16268

However, in the exchange cloth feeding device described in Patent Document 1, since the positioning pin provided in the shank portion of the feed tooth is fixed to the feed table by the attraction force of the magnet, when the sewing is performed, when the sewing is performed, When the shank or the tooth portion of the tooth is given, there is a possibility that the feed tooth may be inadvertently detached from the feed table.

The present invention has been made to solve the above problems, and an object of the invention is to provide a feed tooth attaching and detaching device and a sewing machine including the same, which can secure a feed tooth to a sewing machine without fine adjustment of a sewing machine. The feed mechanism can be easily released by one operation.

In order to solve the above problems, the present invention adopts the following configuration as a feed tooth attaching and detaching device that attaches and detaches a feed tooth to a feed mechanism of a sewing machine, and the feed tooth attaching and detaching device includes a feed table that is interlocked with the feed mechanism Perform horizontal movement and up and down movement; feed the table, which is installed Adjusting the mounting position relative to the feeding table; and feeding teeth fixed to the feeding tooth table, the feeding tooth table comprising a fitting recess for positioning the feeding tooth, the feeding tooth comprising the inserting In the attachment portion of the fitting recess, the feed tooth attaching and detaching device further includes a loading and unloading lever between the fixed position at which the feeding portion of the feeding table and the feeding tooth is fixed and the releasing position at which the fixing is released Turn.

According to an embodiment of the feed rack and the loading and unloading lever of the present invention, the feed rack includes a lock pin that is attached adjacent to the loading and unloading lever, and the loading and unloading lever includes a wrist extending in a radial direction The wrist has a pin fitting groove that engages with the lock pin when the loading and unloading lever is rotated to the fixed position.

In the embodiment of the loading and unloading lever and the lock pin of the present invention, the feed rack includes a compression spring that biases the lock pin to the upper side, and the pin fitting groove has a lower portion. The expansion-reducing groove has a fitting thick shaft portion that is fitted into the enlarged diameter groove of the pin fitting groove, and the lock pin is rotated by the loading and unloading lever from the release position When it is in the fixed position, it is pushed up by the pin fitting groove and then lifted up again, and the fitting thick shaft portion is fitted into the expanded diameter groove.

According to an embodiment of the loading and unloading lever and the lock pin of the present invention, the loading and unloading lever is configured to press the lock pin at a fixed position to separate the fitting thick shaft portion from the expanded diameter groove. The fixing of the feeding portion of the feed table and the feed tooth is released. As the sewing machine of the present invention, a configuration including the feed tooth loading and unloading device is employed.

The feed tooth loading and unloading device of the present invention comprises: a feed tooth table And being mounted to adjust a mounting position relative to the feed table; and a feed tooth positioned to be fixed to the feed table, the feed table comprising a fitting recess for positioning the feed tooth, the feed The feeding tooth includes a mounting portion that is fitted to the fitting recess, and the feeding tooth loading and unloading device further includes a loading and unloading lever that fixes the fixed position of the feeding table and the feeding portion of the feeding tooth and releases the fixing By rotating between the release positions, it is not necessary to re-adjust the feed teeth and the needle plate as long as the attachment position of the feed table relative to the feed table is adjusted once, and the exchange operation of the feed teeth can be easily performed.

Further, the feed rack includes a lock pin implanted adjacent to the loading and unloading rod, the loading and unloading rod includes a wrist portion extending in a radial direction, the wrist portion having a pin fitting groove, and the pin fitting groove is rotated at the loading and unloading rod When the fixing position is reached, the locking pin is fitted, so that there is no fear that the loading and unloading lever is loosened during the sewing operation, and there is no fear that the feeding teeth are detached, and the sewing machine can be used safely.

Further, the feed tooth table includes a compression spring that biases the lock pin to the upper side, and the pin fitting groove has a diameter expansion groove provided at a lower portion, and the lock pin has a fitting thick shaft portion. The fitting thick shaft portion is fitted into the enlarged diameter groove of the pin fitting groove, and the lock pin is pressed by the pin fitting groove after the loading and unloading lever is rotated from the released position to the fixed position. Lifting, the fitting thick shaft portion is fitted into the diameter-expanding groove and is not easily detached. However, if the loading and unloading rod is at a fixed position, the locking pin is pressed to make the locking pin coarse. The shaft portion is disengaged from the expansion groove of the pin fitting groove, and the loading and unloading lever can be released from the fixed state by one operation.

A‧‧‧Feeding agency

1‧‧‧Machine Department

2‧‧‧Open arms

3‧‧‧ needle board

4‧‧‧ pinhole

5‧‧‧ Long holes for feeding teeth

6‧‧‧ openings

7, 51, 58‧‧‧ feed teeth

8, 54‧‧‧ teeth

10‧‧‧ Lower shaft

11‧‧‧Horizontal feed cam

12‧‧‧Up and down feed cam

13‧‧‧ horizontal feed wrist

14‧‧‧Spinning

15‧‧‧Horizontal feed axis

16‧‧‧ wrist

17‧‧‧ pivot

18‧‧‧Feed fork

19‧‧‧ pivot shaft

20, 53, 63‧‧‧ feeders

21‧‧‧Installation Department

21a‧‧‧ front and rear sides

22‧‧‧ Inserts

23‧‧‧Sloping surface

24‧‧‧foot

25‧‧‧Responsible Department

26‧‧‧ pivot shaft hole

27‧‧‧above

27a‧‧‧Upper section

27b‧‧‧ Lower section

28‧‧‧Fixed screw holes

29‧‧‧ rod mounting screw hole

30‧‧‧feeding table

31‧‧‧ bottom

32‧‧‧ fitting recess

33‧‧‧Before and behind

34‧‧‧Insert support

35‧‧‧ fixing screws

36‧‧‧Fixed holes

37‧‧‧ rod mounting screws

38‧‧‧ rod mounting hole

38a‧‧‧ Guide ribs

39‧‧‧ pin mounting holes

39a‧‧‧The Great Trails Department

39b‧‧‧Little Trails Department

40‧‧‧ loading and unloading rod

41‧‧‧Rotating hole

41a‧‧‧Flange

42‧‧‧Hands

43‧‧‧ wrist

44‧‧‧ pin fitting slot

44a‧‧‧Expansion slot

45‧‧‧Eccentric engagement

46‧‧‧Protection

47‧‧‧s

48‧‧‧Finished thick shaft

49‧‧‧ pin head

50‧‧‧Compression spring

52‧‧‧ fastening members (screws)

55‧‧‧ handle

56‧‧‧Locating pin

57‧‧‧Semi-cylindrical surface

59‧‧‧Sloping surface

60‧‧‧ Keeping components

61‧‧‧ hole

62‧‧‧Cylindrical magnet

Fig. 1 is a perspective view showing a feeding mechanism of a sewing machine.

Fig. 2 is a plan view showing a portion of an open arm portion of a needle plate to which a sewing machine is attached.

Fig. 3 (a) is a transverse sectional view of the feed tooth loading and unloading device of the present invention, and Fig. 3 (b) is a top view.

Fig. 4 is a perspective view showing a state in which the feed tooth handling device of the present invention is disassembled in accordance with each member.

Fig. 5 (a) is a top view showing a release position of the loading and unloading lever in the feed tooth loading and unloading device of the present invention, and Fig. 5 (b) is a perspective view.

Fig. 6 (a) is a perspective view of the feed tooth handling device of the present invention as seen from the upper left direction, and Fig. 6 (b) is a cross-sectional view of the feed tooth table to which the feed teeth are attached.

Fig. 7 is a perspective view of the loading and unloading device of the present invention as viewed from obliquely below.

Fig. 8 (a) is a perspective view showing a state in which the loading and unloading lever is fitted to the lock pin in the feed tooth attaching and detaching device of the present invention, and Fig. 8 (b) is an enlarged perspective view from the obliquely downward direction.

Fig. 9 (a) is a perspective view showing a state in which the lock pin is depressed in the feed tooth loading and unloading device of the present invention, and Fig. 9 (b) is an enlarged perspective view from the oblique lower side.

Fig. 10 (a) is a perspective view showing the mounting state of the previous feed tooth, and Fig. 10 (b) is a cross-sectional view showing the exchange cloth feed device of the prior art, that is, Japanese Patent Publication No. Sho 47-16268.

Next, a sewing machine including the feed tooth attaching and detaching device of the present invention will be described with reference to the drawings shown in the embodiments.

[Examples]

In the following description, from the perspective view of Fig. 1, the longitudinal direction is "up and down", and the direction from the upper right to the lower left is "left and right", and the direction from the lower right to the upper left is "front and rear".

In Fig. 1 and Fig. 2, reference numeral 1 denotes a machine table portion of a sewing machine, 2 denotes an open arm portion extending from the machine table portion 1 in a cylindrical shape, and 3 is a needle plate mounted on the upper surface of the open arm portion 2.

As shown in Fig. 2, the needle plate 3 is formed with a pinhole 4 capable of widening the zigzag slit, a plurality of vertically long feed hole long holes 5, and an opening portion for exchanging bobbins. .

The feed mechanism A is housed in the open arm portion 2, and the tooth portion 8 (see FIGS. 3 to 6) of the feed tooth 7 is fed by the feed tooth long hole 5 of the needle plate 3 to be fed.

As shown in FIG. 1, the feed mechanism A transmits the cloth feed motion in which the horizontal feed motion in the front-rear direction and the up-and-down feed motion in the up and down direction are combined to the feed tooth 7, which is fixed by the fixed feed motion. The horizontal feed cam 11 of the lower shaft 10 is rotatably supported in the open arm portion 2, which is produced by being fixed to the upper cam 10 by the lower feed shaft 12.

The feed tooth 7 is attached to the rear end portion of the horizontal feed wrist 13 via a feed table 20 to be described later, and the front end portion of the horizontal feed wrist 13 is rotatably pivotally supported by a pivot pin 17 fixed to the wrist portion 16, which The wrist portion 16 is integrally formed on a horizontal feed shaft 15 that is swingably supported by a screw centering 14 fixed to the open arm portion 2.

The horizontal feed shaft 15 is fed by a horizontally fixed cam to the lower shaft 10 The mating feed fork 18 is rocked, and the horizontal feed wrist 13 converts the swing of the horizontal feed shaft 15 into forward and backward motion and transmits it to the feed tooth 7.

Further, at the left end portion of the horizontal feed wrist 13, the feed table 20 is swingably mounted by the pivot shaft 19. The feed table 20 follows the upper and lower feed cams 12 fixed to the lower shaft 10 and is pivoted about the pivot shaft 19 so that the tooth portions 8 of the feed teeth 7 pass through the long holes 5 for the feed teeth of the needle plate 3 And haunted.

Next, a structure for attaching and detaching the feed tooth 7 to the feed table 20 will be described.

As shown in FIG. 4, the feed tooth 7 having the tooth portion 8 has a rectangular block-shaped mounting portion 21 at the lower portion, and as shown in FIG. 6(b), the mounting portion 21 has a front and rear side surface 21a formed into a tapered shape. .

As shown in FIG. 3 and FIG. 6(a), the attachment portion 21 is formed with a pair of insertion pieces 22 on the left end side thereof, and as shown in FIG. 4, an inclined surface 23 is formed on the right end side.

The feed table 20 is provided with a follower portion 25 that abuts the up-and-down feed cam 12 from the leg portion 24 that is suspended from the left side, and a pivot shaft hole 26 into which the pivot shaft 19 is inserted is formed on the rear side.

The feed table 20 is provided with a top surface 27 on which a step difference is formed, a fixed screw hole 28 is formed in the upper surface 27a of the upper surface 27, and a rod mounting screw hole 29 is formed in the lower surface 27b.

The feed table 30 is attached to the upper surface 27 of the feed table 20, and the feed table 30 is formed with a step difference such that the bottom surface 31 corresponds to the upper surface 27a and the lower surface 27b.

A fitting recess 32 into which the mounting portion 21 of the feed tooth 7 is fitted is formed on the upper surface of the feed table 30, as shown in Fig. 6(b), before and after the recess 32 is fitted The face 33 has a tapered shape.

Further, the fitting recess 32 is formed with an insertion support portion 34 corresponding to the insertion piece 22 of one of the attachment portions 21 on the left side, and the right side of the fitting recess 32 is opened.

The feed pocket 30 is formed with a fixing hole 36 through which the fixing screw 35 is inserted to the left side of the fitting recess 32, and a rod mounting hole 38 for inserting the rod mounting screw 37 is formed on the right side of the fitting recess 32. 37 is for rotatably mounting a loading and unloading lever 40 which will be described later.

Further, a pin attachment hole 39 for inserting a lock pin 46 to be described later from below is formed in the vicinity of the rod attachment hole 38 of the feed table 30. As shown in Figs. 8 and 9, the pin attachment hole 39 is composed of Two portions of the large diameter portion 39a and the small diameter portion 39b having different inner diameters are formed.

The loading and unloading lever 40 is formed with a rotating hole 41 penetrating through the center portion, and a flange 41a that rotatably slides around the outer periphery of the guiding rib 38a of the lever mounting hole 38 is formed on the inner circumference of the rotating hole 41.

A handle 42 for rotating the loading and unloading lever 40 is extended to the side of the loading and unloading lever 40.

Further, a wrist portion 43 is extended on the side portion of the loading and unloading lever 40 at an angle of about 90 degrees from the handle 42 in a plan view.

A pin fitting groove 44 into which a lock pin 46 to be described later is fitted is formed in the arm portion 43, and as shown in Fig. 7, a diameter-expanding groove 44a is formed in a lower portion of the pin fitting groove 44.

Further, an eccentric engagement portion 45 that engages with the inclined surface 23 of the attachment portion 21 and presses the attachment portion 21 toward the feed table is formed on the outer periphery of the upper end of the loading and unloading lever 40.

As shown in Fig. 4, the anti-loose pin 46 is sequentially larger from the outside by the outer diameter. The seat portion 47 has a fitting thick shaft portion 48 having an outer diameter smaller than that of the seat portion 47, and a pin head portion 49 having an outer diameter smaller than that of the fitting thick shaft portion 48.

As shown in Fig. 8, the lock pin 46 is inserted from the large diameter portion 39a formed below the pin attachment hole 39, and the seat portion 47 is slidable in the large diameter portion 39a, and the fitting thick shaft portion 48 is slidable. The outer diameter is set in each of the small diameter portions 39b.

As shown in FIG. 5, the lock pin 46 is pushed up by the compression spring 50 in a manner that not only the pin head 49 but also a portion of the fitting thick shaft portion 48 projecting from the upper surface of the feed table 30. Seat 47.

Next, the usage and effects of the present embodiment will be described.

As shown in FIG. 4, the feed table 30 is mounted on the feed table 20, and after the lock pin 46 and the compression spring 50 are sequentially inserted from the pin mounting holes 39 of the feed table 30, the set screw 35 is self-set. The fixing hole 36 of the feeding table 30 is inserted above and screwed into the fixing screw hole 28 of the feeding table 20 to be temporarily fixed.

Then, the flange 41a formed in the rotating hole 41 of the loading and unloading lever 40 is aligned with the outer periphery of the guiding rib 38a of the rod mounting hole 38 of the feeding table 30, and the rod mounting screw 37 is inserted from above, screwed into the feed. The rod of the table 20 is screwed to the screw hole 29 and temporarily fixed.

Next, the feeding teeth 7 are attached to the feeding table 30, and after the loading and unloading lever 40 is positioned at the releasing position shown in FIG. 5, the pair of insertion pieces 22 formed in the mounting portion 21 of the feeding teeth 7 are inserted and formed. The insertion support portion 34 of the fitting recess 32 of the tooth table 30 is inserted.

Thus, as shown in FIG. 6(b), the mounting portion 21 of the feed tooth 7 has a front and rear side surface 21a formed in a tapered shape, and receives the fitting recess 32 of the mounting portion 21. The shape of the front and rear back 33 is also the same tapered shape, so that the mounting portion 21 of the feed tooth 7 and the fitting recess 32 of the feed rack 30 are accommodated in a predetermined positional relationship.

Then, when the handle 42 of the loading and unloading lever 40 is rotated by the finger from the releasing position shown in FIG. 5 in the direction of the arrow, the portion of the eccentric engaging portion 45 opposed to the mounting portion 21 is rotated from the center of rotation (rod mounting screw 37) The radius of the center is gradually increased, and finally, the eccentric engagement portion 45 is engaged with the inclined surface 23 of the attachment portion 21, and the attachment portion 21 is pressed toward the insertion support portion 34 side of the feed table 30.

Thereby, the feed tooth 7 pressed against the feed table 30 by the eccentric engagement portion 45 of the loading and unloading lever 40 can be tightly fixed, but since only this point is used, the loading and unloading lever 40 is still present. The following measures are taken to loosen the sewing work.

When the loading and unloading lever 40 is rotated in the direction of the arrow so that the loading and unloading lever 40 approaches the fixed position shown in FIG. 3, the fitting thick shaft portion 48 of the lock pin 46 comes into contact with the lower end of the pin fitting groove 44, thereby The lock pin 46 is temporarily pressed downward. However, since the lock pin 46 is continuously pushed upward by the compression spring 50, when the loading and unloading lever 40 is further rotated and the pin fitting groove 44 comes to the position of the lock pin 46, it is pressed until now. The lower anti-loose pin 46 is raised, and the fitting thick shaft portion 48 is fitted into the enlarged diameter groove 44a of the pin fitting groove 44 of the loading and unloading lever 40, and the loading and unloading lever 40 is held at a fixed position, so that there is no need to worry during the sewing operation. The loading and unloading lever 40 is loosened.

In this state, the needle plate 3 is attached to the open arm portion 2, and after confirming that the feed tooth 7 does not come into contact with the feed tooth long hole 5 of the needle plate 3, the needle plate 3 is removed, and the fixing screw 35 and the rod are attached. The screw 37 is officially locked.

Further, when the needle plate 3 is attached to the open arm portion 2, when the feed tooth 7 comes into contact with the feed tooth long hole 5 of the needle plate 3, the needle plate 3 is removed, and the fixing screw 35 and the rod are loosened again. The mounting screw 37 is used to finely adjust the mounting position of the feed table 30 and the feed table 20.

In this way, only one adjustment of the mounting position of the feed table 30 relative to the feed table 20 is required, and it is not necessary to perform the adjustment again each time the feed tooth 7 is exchanged as before.

Next, in order to remove the feed tooth 7 from the feed table 30 in exchange for the other feed teeth, as shown in FIG. 8, the pin of the loading and unloading lever 40 from the fixed position is pointed by the finger from above in the direction of the arrow. When the fitting head 44 protrudes from the pin head 49 of the upper lock pin 46, as shown in FIG. 9, by pressing the compression spring 50, the lock pin 46 is lowered in the pin fitting groove 44, so that the lock pin 46 is lowered in the pin fitting groove 44. The pin head portion 49 is in a state of not protruding above the loading and unloading lever 40.

Then, the fitting thick shaft portion 48 of the lock pin 46 is lowered and released from the expanded diameter groove 44a of the pin fitting groove 44, and the loading and unloading lever 40 is released from the lock pin 46, and is freely rotatable.

In this state, as shown in FIG. 3, when the handle 42 of the loading and unloading lever 40 is rotated in the direction of the arrow, the loading and unloading lever 40 returns to the releasing position shown in FIG. 5, so that the feeding tooth 7 can be fed from the feeding table 30. Removed.

Thus, in the present embodiment, when the feed tooth 7 is detached from the feed table 30, it is not necessary to use another tool, but only one operation of manually pressing the lock pin 46 fitted to the loading and unloading lever 40 is simple. After the fixing state of the loading and unloading lever 40 is released, the loading and unloading lever 40 is freely rotated, and the detaching operation of the feeding tooth 7 can be easily performed.

As described above, the feed tooth loading and unloading device of the embodiment is as long as The insertion piece 22 provided on one end side of the attachment portion 21 of the feed tooth 7 is inserted into the insertion support portion 34 of the fitting recess 32, and the loading and unloading lever 40 is rotated from the release position to the fixed position to position the feed tooth 7 It is fixed to the feeding table 30, and can prevent the loading and unloading rod 40 from being loosened during sewing by fitting with the locking pin 46, and can be released by pressing one of the locking pins 46 to release the loading and unloading rod 40. The feed teeth 7 are removed in a fixed state, so that the exchange of the feed teeth 7 can be performed extremely easily.

Further, in the present embodiment, the feed tooth 7 is attached and detached to the open arm portion 2 of the machine unit 1, but the present invention is of course not limited to a sewing machine having such an open arm portion, and can be applied to various forms. Sewing machine of the machine department.

[Industrial availability]

In the feeding tooth loading and unloading device of the present invention, since the feeding teeth can be positioned, installed and set to a fixed state by a simple operation, and the feeding teeth after installation, tools and the like are not required, as long as one operation is performed Since the fixing state can be released and removed, it is possible to easily exchange various feeding teeth in accordance with the sewing operation, and it is advantageous for use in various sewing machines.

7‧‧‧Feed teeth

8‧‧‧ teeth

20‧‧‧Feeding table

21‧‧‧Installation Department

23‧‧‧Sloping surface

24‧‧‧foot

25‧‧‧Responsible Department

26‧‧‧ pivot shaft hole

27‧‧‧above

27a‧‧‧Upper section

27b‧‧‧ Lower section

28‧‧‧Fixed screw holes

29‧‧‧ rod mounting screw hole

30‧‧‧feeding table

31‧‧‧ bottom

32‧‧‧ fitting recess

33‧‧‧Before and behind

34‧‧‧Insert support

35‧‧‧ fixing screws

36‧‧‧Fixed holes

37‧‧‧ rod mounting screws

38‧‧‧ rod mounting hole

38a‧‧‧ Guide ribs

39‧‧‧ pin mounting holes

40‧‧‧ loading and unloading rod

41‧‧‧Rotating hole

41a‧‧‧Flange

42‧‧‧Hands

43‧‧‧ wrist

44‧‧‧ pin fitting slot

44a‧‧‧Expansion slot

45‧‧‧Eccentric engagement

46‧‧‧Protection

47‧‧‧s

48‧‧‧Finished thick shaft

49‧‧‧ pin head

50‧‧‧Compression spring

Claims (5)

A feeding tooth loading and unloading device is for loading and unloading a feeding tooth to a feeding mechanism of a sewing machine, the feeding tooth loading and unloading device comprising: a feeding table that is horizontally moved and moved up and down in conjunction with the feeding mechanism; and the feeding tooth table, Mounted to adjust a mounting position relative to the feed table; and feed teeth positioned to be fixed to the feed table, the feed table including a fitting recess for positioning the feed tooth, the feed The tooth includes a mounting portion that is fitted to the fitting recess, and the feed tooth attaching and detaching device further includes a loading and unloading lever that fixes the fixing position of the feeding table and the feeding portion of the feeding tooth and releases the fixing Rotate between positions. The feed tooth loading and unloading device of claim 1, wherein the feed tooth table comprises a lock pin implanted adjacent to the loading and unloading bar, the load release bar comprising a wrist portion extending in a radial direction, the wrist portion having a pin fitting a slot that engages with the lock pin when the loading and unloading lever is rotated to the fixed position. The feed tooth loading and unloading device of claim 2, wherein the feed tooth table comprises a compression spring biasing the lock pin to the upper side, the pin fitting groove having a diameter expansion groove provided at the lower portion, the prevention The loose pin has a fitting thick shaft portion that is fitted into the enlarged diameter groove of the pin fitting groove, and the lock pin is rotated by the loading and unloading lever from the released position to the fixed position After being pushed down by the pin fitting groove, lift it up again, so that The fitting thick shaft portion is fitted to the diameter expansion groove. The feed tooth loading and unloading device of claim 3, wherein the loading and unloading rod is separated from the expansion groove by pressing the lock pin at a fixed position to release the feed table and The fixing of the mounting portion of the feed tooth. A sewing machine provided with the feed tooth loading and unloading device according to any one of claims 1 to 4.