JP2009207641A - Sequin tape supplying device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To regulate the loose movement of an input member and a tape send-out member due to vibrations of a sewing machine and shocks during switching and to alternately feed tapes more accurately in a feed mechanism cut off from a drive mechanism. <P>SOLUTION: A base 17 of the sequin tape supplying device 11 includes two feed mechanisms 21R and 21L for feeding the tape, a switching mechanism 22 for moving the feed mechanisms 21R and 21L in the horizontal direction and alternately making them face a needle bar 7 from the front, and a drive mechanism 23 for supplying power to the feed mechanism 21R facing the needle bar 7 are installed. The feed mechanisms 21R and 21L have the tape send-out member moved from an origin position by a prescribed stroke and a power transmission means 61 for transmitting the power of the drive mechanism 23 to the tape send-out member. The power transmission means 61 includes an input lever 62 connected to an output lever 51 by the switching mechanism 22 at a standby position corresponding to the origin position of the tape send-out member and a holding member for holding the input member 62 cut off from the output lever 51 at the standby position. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a sequin tape supply device that alternately supplies a plurality of tapes connected with sequins to a sewing position of a sewing machine.

2. Description of the Related Art Conventionally, there is known an apparatus that switches the positions of a plurality of feeding mechanisms in the left-right direction and supplies tape in the front-rear direction from a feeding mechanism at a position facing the needle bar. For example, in Patent Document 1, a slide shaft that couples two feed mechanisms, a switching motor that moves the slide shaft in the left-right direction and switches the position of the feed mechanism, and a feed roller below the feed mechanism penetrate in the left-right direction. There is described a sequin tape supply device including a drive shaft for driving and a drive motor for alternately operating a feed mechanism via a clutch on the drive shaft.
Japanese Patent Publication No. 2-6552

  According to a conventional sequin tape supply device, two tapes having different colors and sizes can be alternately supplied by two feeding mechanisms. However, in the feed mechanism on the side separated from the drive shaft, there is a possibility that the feed roller may idle due to the vibration of the sewing machine or the impact at the time of switching. When the feed roller is idle, its origin position (tape feed start position) is changed, so that when the feed is resumed, the sequin hole is displaced from the sewing position, resulting in a sewing error.

  An object of the present invention is to solve the above-described problems and provide a sequin tape supply device capable of accurately feeding a tape alternately.

  In order to solve the above-described problems, the present invention makes a plurality of feeding mechanisms for feeding a tape with sequins alternately opposed to a needle bar on a sewing machine head by a switching mechanism, and a feeding mechanism opposed to the needle bar by a driving mechanism. In the sequin tape supply device to be operated, the feeding mechanism includes a tape feeding member that moves with a predetermined stroke from the origin position, and a power transmission means that transmits the power of the drive mechanism to the tape feeding member. An input member connected to the drive mechanism by a switching mechanism at a standby position corresponding to the origin position of the member, and a holding member that holds the input member separated from the drive mechanism at the standby position are provided.

In the sequin tape supply device, preferably, the following configuration can be adopted.
(A) The feed mechanism includes a stop member that stops the tape delivery member at the origin position, the power transmission means includes a transmission member that connects the input member to the tape delivery member, and the holding member presses the transmission member against the stop member. A sequin tape supply device comprising:
(B) The sequin tape supply device, wherein the holding member includes a magnet that attracts the input member.

  According to the sequin tape supply device of the present invention, since the input member of the power transmission means is held at the standby position in the feed mechanism separated from the drive mechanism, the input member and the tape due to the vibration of the sewing machine or the shock at the time of switching There is an excellent effect that the play of the feeding member is restricted and the alternate feeding of the tape can be performed more accurately.

  The sequin tape supply device (11) has a plurality of feed mechanisms (21) for feeding the tape (T) with the sequin (S) connected alternately to the needle bar (7) on the sewing machine head (3) by the switching mechanism (22). The feed mechanism that is opposed to the needle bar is operated by the drive mechanism (23). The feeding mechanism includes a tape delivery member (37) that moves from the origin position with a predetermined stroke, and a power transmission means (61) that transmits the power of the drive mechanism to the tape delivery member. The power transmission means includes an input member (62) connected to the drive mechanism by the switching mechanism at a standby position corresponding to the origin position of the tape delivery member, and a holding member (holding the input member separated from the drive mechanism at the standby position). 86, 88).

  Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a machine head 2 of the multi-head embroidery machine 1 has a plurality of sewing heads 3 arranged in parallel, and a sequin tape supply device 11 is installed on the left side of each head 3. A bed 4 is disposed below the sewing head 3, and an embroidery frame (not shown) that holds a work cloth is placed on a table 5 having the same height as the bed 4. A controller 6 is installed at one end of the table 5, and the entire embroidery machine 1 is controlled by the controller 6. Two sequin tape supply devices 11 may be installed on each of the left and right sides of each sewing head 3.

  As shown in FIGS. 2 and 3, a bracket 12 is fixed to the sewing machine head 3, and two reels 13 for supplying the tape T with sequins connected to the right side of the bracket 12, and the tape T are sewn on the lower side of the head 3. There are provided a plurality of rollers 14 for guiding to the attachment position. On the left side of the bracket 12, a guide shaft 15 that guides the lifting body 18 and a lifting motor 16 that drives the feed screw 19 are disposed, and the lifting body 18 is screwed to the feed screw 19. A base 17 of the sequin tape supply device 11 is attached to the elevating body 18 and is lifted and lowered obliquely along the guide shaft 15 by the motor 16. And the supply apparatus 11 is raised / lowered to the supply position which approaches a sewing position, and the rest position which left | separated upwards from the sewing position. Accordingly, the sewing machine head 3 that does not perform sequin sewing can retract the supply device 11 to the rest position and open the periphery of the sewing position.

  The base 17 includes a tape guide mechanism 20 that guides the tape T following the roller 14 on the bracket 12, two left and right feed mechanisms 21 (L, R) that feed the tape T in the front-rear direction, and a feed mechanism 21. A switching mechanism 22 that is alternately opposed to the needle bar 7 and a drive mechanism 23 that supplies power to the feed mechanism 21 that is opposed to the needle bar 7 are provided. In this embodiment, a plurality of needle bars are arranged on the left and right sides of the sewing head 3, and one needle bar 7 (the leftmost needle bar is indicated by an axis in FIG. 2) is connected to a needle plate by a color changing mechanism (not shown). Nine needle holes 9a are indexed to the sewing position. Then, either the left or right feeding mechanism 21 is disposed at a position facing the needle bar 7 at the sewing position from the front by the switching mechanism 22.

  As shown in FIGS. 4, 5, and 6, the two feeding mechanisms 21 are arranged side by side on the frame 24. The frame 24 includes a pair of left and right side plates 25, a block 26 that joins the front ends of the side plates 25, a rod 27 that joins the middle portion of the side plates 25, and a rod 28 that joins the rear end portions of the side plates 25. . The base 17 is fixedly provided with a rod 29 that supports the block 26 and blocks 30 and 31 that support the rods 27 and 28. And the frame 24 is supported by the combination of these members 26-31 so that a movement to the left-right direction is possible.

  The left and right feeding mechanisms 21 are provided with front L-shaped bodies 32 symmetrically. The body 32 is attached to the side plate 25 by a bolt 34 passing through the long hole 33 (see FIG. 8) so that the position of the body 32 can be adjusted in the tape T feed direction (front-rear direction). In the lower part of the body 32, a guide groove 35 for guiding the tape T, a tape feed member 37 having a feed pin 36 engaged with the hole h of the sequin S, and a cutter 38 for separating the leading sequin S from the tape T, Is arranged. The tape delivery member 37 is supported by a slider 39, and the slider 39 is guided in the front-rear direction by a rod 40. A stopper 41 for finely adjusting the forward end position of the feed pin 36 is provided in front of the tape feed member 37.

  The switching mechanism 22 includes a switching motor 43, a lever 44, and a link 45. The switching motor 43 is installed below the base 17, and the motor shaft 46 is connected to the block 26 at the front end of the frame 24 via a lever 44 and a link 45. Then, the switching mechanism 22 moves the frame 24 in the left-right direction by the rotation of the switching motor 43 (see FIGS. 5A and 5B), and moves the guide grooves 35, the tape feeding member 37, and the cutter 38 of the left and right feeding mechanisms 21 to the needle bar 7. Are arranged alternately at positions facing from the front. 4 shows a state in which the left feeding mechanism 21R is disposed at a position facing the needle bar 7, and this position is finely adjusted by a stopper 47 that contacts the lever 44.

  The drive mechanism 23 includes a feed motor 48, a drive lever 49, a link 50, and an output lever 51. The feed motor 48 is installed on the base 17 above the switching motor 43, and the motor shaft 52 is connected to the output lever 51 via a drive lever 49 and a link 50. The output lever 51 is swingably supported by a support shaft 53, and the support shaft 53 is held on the base 17 by a holder 54. The output lever 51 is formed with two arms 55, 56, the first arm 55 is connected to the link 50, and a long hole 57 is formed in the second arm 56. The output lever 51 alternately outputs the power of the feed motor 48 from the second arm 56 to the left and right feed mechanisms 21.

  The feed mechanism 21 includes power transmission means 61 that transmits the power of the feed motor 48 to the tape delivery member 37. The power transmission means 61 includes an input lever 62, an intermediate link 63, a transmission lever 64, and a horizontal link 65, and the horizontal link 65 is connected to the slider 39 via an eccentric member 69. The left and right input levers 62 are arranged to face the upper part of the feed mechanism 21 and are supported by the side plate 25 so as to be rotatable by a horizontal shaft 66 in the lower part. The upper part of the input lever 62 is formed thinner than the lower part, and a space 67 (see FIG. 4) having the same width as the movement amount of the frame 24 in the left-right direction is formed between the upper parts of both levers 62. A second arm 56 is inserted into the space 67 from above, and a connecting pin 68 that can be fitted into the long hole 57 is projected from the upper end of the input lever 62.

  The input lever 62 is alternately connected to the output lever 51 through the fitting of the connecting pin 68 and the long hole 57 by the movement of the frame 24 in the left-right direction (see FIGS. 5A and 5B), and the output lever 51 is connected to the needle bar 7. The power of the feed motor 48 is supplied from above to the feed mechanism 21 at a position opposite to. Therefore, the power member is omitted from the lower part of the feed mechanism 21 and both the left and right sides of the feed mechanism 21 are opened (see FIG. 2), so that the operator's workability can be improved. Further, by controlling the number of revolutions of the feed motor 48, changing the feed pitch of the tape T for each sewing head 3 to sew sequins S of different sizes or making the rotation direction of the switching motor 43 different, It is also possible to improve the mobility of the multi-head embroidery machine 1 such as operating the right feeding mechanism 21R with the head 3 and operating the left feeding mechanism 21L with another head 3.

  As shown in FIGS. 6 and 7, a horizontal portion 70 projects from the lower portion of the input lever 62, and a long hole 71 is formed in the horizontal portion 70. The intermediate link 63 includes a slide pin 72 fitted into the long hole 71 at one end, and a connecting shaft 73 is fixed to the other end with a screw 74. The connecting shaft 73 is rotatably supported by the body 32 of the feed mechanism 21 by a bush 75, and the upper end portion of the transmission lever 64 is connected to the outer end of the connecting shaft 73. The lower end of the transmission lever 64 is connected to one end of the horizontal link 65, and the other end of the horizontal link 65 is connected to the tape delivery member 37 via the eccentric member 69 and the slider 39. The power transmission means 61 uses the connecting pin 68 connected to the output lever 51 as an input end, and uses a horizontal link 65 provided on the body 32 as an output end to transmit the power of the feed motor 48 to the tape delivery member 37. The feed pin 36 is configured to be driven with a predetermined stroke from the origin position.

  As shown in FIGS. 7 and 8, at the front end of the body 32, two adjustment screws 76 that separately adjust the front-rear direction positions of the left and right feeding mechanisms 21 with respect to the needle bar 7 are provided. A knob 77 of the adjustment screw 76 is inserted into the bent portion 78 of the side plate 25, and a screw portion 79 is screwed to the hanging portion 80 of the body 32. When setting the tape T, align the hole h of the sequin S with the drop point of the needle 8, loosen the bolt 34 and turn the adjusting screw 76 to move the body 32 in the front-rear direction (tape feed direction) with respect to the side plate 25. The cutter 38 is matched with the connection part of the two sequins S.

  Then, the stroke rear end position which is the origin position of the tape delivery member 37 is adjusted by the eccentric member 69 in accordance with the scale 81, and the stroke front end position of the tape delivery member 37 is adjusted by the stopper 41. Therefore, according to the sequin tape supply device 11 of this embodiment, the longitudinal positions of the two feeding mechanisms 21 with respect to the needle bar 7 are adjusted separately, and various types of tapes T having different sequin S sizes are attached to the sewing machine head 3. Can be alternately supplied to the sewing position. During stroke adjustment, the input lever 62 is stationary at a vertical standby position, and the long hole 71 is held in a horizontal orientation.

  When adjusting the position of the feed mechanism 21, the horizontal link 65, the transmission lever 64 and the intermediate link 63 provided on the body 32 change the position with respect to the needle bar 7. For example, in the right side (upper side in FIG. 7), when supplying the tape T including the sequin S having a diameter of 3 mm, the horizontal link 65, the transmission lever 64, and the intermediate link 63 together with the body 32 have the needle drop point. The slide pin 72 on the intermediate link 63 is located in the approximate center of the long hole 71. When feeding the tape T with the sequin S having a diameter of 6 mm in the left feeding mechanism 21L, the power transmission members 65, 64, 63 move away from the needle drop point as the body 32 moves backward, and the slide pin 72 is long. Displace to the rear side of the hole 71.

  In the power transmission mechanism 61 of this embodiment, the intermediate link 63 provided on the body 32 is cut off from the input lever 62, and the long holes 71 located at both connecting portions function as a path length expansion / contraction portion. The length of the power transmission path extending from the horizontal link 65 to the horizontal link 65 is expanded and contracted in accordance with the adjustment amount by the adjustment screw 76 (the expansion amount δ is shown in FIG. 7). Thereby, the displacement amount of the power transmission members 65, 64, 63 moving together with the body 32 can be absorbed, and both the left and right input levers 62 can be kept stationary at the standby position. Accordingly, the connecting pin 68 that is the input end of the power transmission means 61 is connected to the elongated hole 57 of the output lever 51 by the switching mechanism 22 without mistake, and two types of sequins S of different sizes are alternately supplied to the needle drop points. Can do. Note that, at the connection portion between the intermediate link 63 and the input lever 62, the long hole 71 may be provided on the intermediate link 63 side, and the slide pin 72 may be provided on the input lever 62 side.

  On the other hand, stop plates 83 that stop the transmission lever 64 at the origin position (the rear end position of the stroke) of the tape delivery member 37 are provided on the left and right sides of the frame 24. The stop plate 83 is attached to the body 32 with a screw 85 passing through the long hole 84 and is adjusted in combination with the eccentric member 69. A holding spring (torsion spring) 86 is fitted on the connecting shaft 73 of the transmission lever 64, one end of which is locked to the body 32, and the other end is locked to the transmission lever 64. 64 is biased toward the stop plate 83 (clockwise direction in FIG. 8). Then, in the power transmission means 61 on the side separated from the output lever 51, the transmission lever 64 is pressed against the stop plate 83 by the holding spring 86, and the slide pin 72 and the long hole 71 are fitted (see FIG. 6). ), And the input lever 62 is held at a standby position corresponding to the origin position of the tape delivery member 37.

  Therefore, the connecting pins 68 of the two feeding mechanisms 21 can be aligned on the same axis A (see FIGS. 4 and 5). Accordingly, the tape feeding member 37 is stopped at the origin position in the feeding mechanism 21 on the side separated from the output lever 51, and the displacement of the feeding pin 36 due to the vibration of the sewing head 3 or the impact at the time of switching is prevented. The feed mechanism 21 can be operated immediately. A magnet may be used as the holding member for the input lever 62. For example, as shown in FIG. 9, magnets 88 are attached to the left and right side plates 25 of the frame 24 at the top of the input lever 62 in the vertical position, and the input lever 62 and the connecting pin 68 are held at the standby position by the attractive force of the magnet 88. Can be configured to.

  In addition, the present invention is not limited to the above-described embodiments, and can be implemented by arbitrarily changing the configuration and shape of each part without departing from the spirit of the invention.

1 is a front view of a multi-head embroidery machine showing an embodiment of the present invention. It is a front view which shows the sequin tape supply apparatus of this embroidery machine. It is a right view of this supply apparatus. It is an expanded sectional view of FIG. 3 which shows the principal part of this supply apparatus. It is the VV sectional view taken on the line of FIG. It is the VI-VI sectional view taken on the line of FIG. It is the VII-VII sectional view taken on the line of FIG. It is the right view of the supply apparatus seen from the arrow VIII direction of FIG. It is a fragmentary sectional view of Drawing 4 showing the example of change of a holding member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Multi-head embroidery machine 3 Sewing machine head 7 Needle bar 11 Sequin tape supply device 16 Lifting motor 21 Feed mechanism 22 Switching mechanism 23 Drive mechanism 37 Tape sending member 38 Cutter 43 Switching motor 48 Feed motor 51 Output lever 61 Power transmission mechanism 62 Input lever 65 Horizontal link 68 Connecting pin 71 Long hole (path length expansion / contraction part)
76 Adjustment screw 86 Holding spring 88 Magnet S Sequin T Tape

Claims (3)

In a sequin tape supply device in which a plurality of feeding mechanisms for feeding a tape in which sequins are connected are alternately opposed to a needle bar on a sewing machine head by a switching mechanism, and a feeding mechanism that is opposed to the needle bar is operated by a driving mechanism.
The feeding mechanism includes a tape delivery member that moves with a predetermined stroke from an origin position, and a power transmission means that transmits power of the drive mechanism to the tape delivery member, and the power transmission means includes the origin position of the tape delivery member. A sequin tape supply device comprising: an input member connected to the drive mechanism by the switching mechanism at a standby position corresponding to the drive mechanism; and a holding member that holds the input member separated from the drive mechanism at the standby position. .   The feeding mechanism includes a stop member that stops the tape delivery member at the origin position, the power transmission means includes a transmission member that connects the input member to the tape delivery member, and the holding member holds the transmission member to the stop member. The sequin tape supply apparatus according to claim 1, further comprising an elastic member that is pressed against the sequin tape.   The sequin tape supply apparatus according to claim 1, wherein the holding member includes a magnet that attracts the input member.

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