JP2015163155A - loop piece sewing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a loop piece sewing system including a loop piece supply device for supplying a belt-like member having both ends folded to a sewing device and the sewing device for sewing a loop piece on a sewing object and suppressing deterioration of a sewing finish of the loop piece as compared with a conventional sewing finish.SOLUTION: A loop piece sewing system includes: a pair of holding sections 41 and 46; a pressing section 82; first movement means; pressing control means; and second movement means. The pair of holding sections 41 and 46 holds each of both ends 68 and 69 of a length direction 88 of a loop piece 7 from a vertical direction. The first movement means moves the pair of holding sections 41 and 46 to an upper side of a needle plate 77. The pressing control means presses the loop piece 7 from an upper side by the pressing section 82 when the first movement means moves the pair of holding sections 41 and 46 to the upper side of the needle plate 77. The second movement means moves each of the pair of holding sections 41 and 46 to the outside of the length direction 88 of the loop piece 7 when the pressing section 82 presses the loop piece 7.

Description

  The present invention relates to a loop piece sewing system including a loop piece supply device that supplies a belt-like member with both ends bent to a sewing device and a sewing device that sews the loop piece to a sewing object.

  There is a loop piece supply device that supplies a loop piece that passes a belt to a sewing device (for example, see Patent Document 1). The loop piece supply apparatus described in Patent Document 1 cuts a continuous strip-shaped member with a cutter device to generate a strip-shaped member having a predetermined length. The loop piece supply device sandwiches both end portions of the belt-like member with a pair of fork-shaped gripping portions. The loop piece supply device rotates the grip portion and bends both ends of the belt-like member. The loop piece supply device supplies a belt-like member having both ends bent to the sewing device as a loop piece.

JP 2003-311059 A

  The loop piece supply device disclosed in the above publication rotates the gripping portion and bends both ends of the belt-like member. The gripping part moves in the width direction of the loop piece after the loop piece is arranged on the needle plate of the sewing apparatus. At this time, the bent portion of the loop piece moves in the width direction of the loop piece together with the gripping portion, and both ends of the length direction of the loop piece may be distorted with respect to the width direction. That is, in the conventional loop piece feeding device, the sewing finish of the loop piece may be lowered.

  It is an object of the present invention to provide a loop piece supply device that supplies a belt-like member with both ends bent to a sewing device and a sewing device that sews the loop piece to a sewing object, so that the sewing finish of the loop piece is reduced as compared with the prior art. It is to provide a restrained loop piece sewing system.

  A loop piece sewing system according to an aspect of the present invention includes a loop piece supply device that supplies a loop piece, which is a belt-like member bent at both ends in a length direction, to a sewing device, and sewing that sews the loop piece to a sewing object. In the loop piece sewing system comprising the device, each of the strip-shaped member has a rod-shaped first member and a second member extending in the width direction, and moves to a position corresponding to each of both end portions in the length direction of the strip-shaped member. A pair of clamping parts that clamp each of both end portions in the length direction of the loop piece with the first member and the second member from above and below, and the loop piece located above the needle plate of the sewing device is on the upper side A first holding means for moving the pair of holding parts onto the needle plate, and when the first moving means moves the pair of holding parts on the needle plate, Before the pair of clamping parts are clamped Presser control means for pressing the loop piece from the upper side, and a second movement for moving each of the pair of clamping parts outward in the length direction of the loop piece when the presser part presses the loop piece by the presser control means Means.

  In the loop piece sewing system according to this aspect, when the presser portion presses the loop piece, the holding portion is moved outward in the length direction of the loop piece. Therefore, the loop piece sewing system can suppress both ends in the length direction of the loop piece from being distorted with respect to the width direction of the loop piece, as compared with the conventional case where the holding portion is moved in the width direction of the loop piece. That is, the loop piece sewing system can suppress deterioration of the quality of the loop piece sewing finish.

  In the loop piece sewing system according to this aspect, the pressing portion may hold down a range including a pair of bent portions of the loop piece from above. The loop piece sewing system can prevent the bent portion of the loop piece from moving outward in the length direction of the loop piece together with the pair of holding portions when the pair of holding portions move in the width direction. The loop piece sewing system can suppress the length of the loop piece in the length direction from being changed from the length before the pair of holding portions are moved. Therefore, the loop piece sewing system can suppress deterioration of the quality of the loop piece sewing finish.

  In the loop piece sewing system according to this aspect, in each of the pair of holding portions, the upper first member of the pair of upper and lower first members and the second member is moved toward the lower second member. A holding unit driving means for holding each of the end portions in the length direction of the loop piece from above and below, and when the holding unit holds the loop piece by the holding control means, the holding unit driving means A clamping unit control means for releasing the clamping of the loop pieces of each of the pair of clamping parts, and the second moving means is configured to clamp each of the pair of clamping parts by the clamping unit driving means. When released, each of the pair of clamping portions may be moved to the outside of the loop piece. The loop piece sewing system moves the bent part of the loop piece together with the pair of holding parts when each of the pair of holding parts holds the loop piece, compared to when each of the pair of holding parts moves outward in the length direction of the loop piece. It can suppress more reliably. Therefore, the loop piece sewing system can suppress deterioration of the quality of the loop piece sewing finish.

It is a top view of the sewing system 1 when the 2nd apparatus 40 of the loop piece supply apparatus 2 exists in a supply attitude | position. It is a front view of the 1st apparatus 10 of the loop piece supply apparatus 2. FIG. FIG. 3 is an enlarged front view of the vicinity of the mounting portion 11 in FIG. 2 when a pair of sandwiching portions 41 and 46 sandwich the loop piece 7 in the vertical direction. FIG. 4 is a right side view of a configuration of a part of the first device 10 when a blade 19 is in a standby position. It is a right view of the 1st apparatus 10 when a pair of moving rods 13 and 14 and the press part 12 exist in a stand-by position. It is a front view of the 2nd apparatus 40 and the sewing machine 3 when the 2nd apparatus 40 of the loop piece supply apparatus 2 exists in a supply attitude | position. FIG. 10 is a plan view of the first device 10 and the second device 40 at the start of the sewing control process of FIG. 9. 1 is a block diagram of a sewing system 1. FIG. It is a flowchart of a sewing control process. FIG. 10 is a right side view of the second device 40 at the start of the sewing control process of FIG. 9. FIG. 4 is a corresponding diagram of FIG. 3 schematically showing the positional relationship between the placing portion 11, the strip-shaped member 8, the pressing portion 12, and a pair of moving rods 13 and 14 when the pressing portion 12 presses the strip-shaped member 8. The positional relationship of the mounting part 11, the band-shaped member 8, the pressing part 12, and the pair of moving bars 13, 14 when the pair of moving bars 13, 14 presses both ends 86, 87 of the band-shaped member 8 is schematically shown. FIG. 4 is a correspondence diagram of FIG. 3. It is a top view of the 1st apparatus 10 and the 2nd apparatus 40 when the support stand 54 moves to an extending | stretching position. When the pair of sandwiching portions 41 and 46 are moved to positions corresponding to both ends 111 and 112 in the longitudinal direction 89 of the placement portion 11, the placement portion 11, the band-shaped member 8, the pressing portion 12, the pair of moving bars 13, 14 is a correspondence diagram of FIG. 3 schematically showing the positional relationship between the tip portions of the pair of sandwiching portions 41 and 46. FIG. 4 is a plan view of the first device 10 and the second device 40 when a pair of sandwiching portions 41 and 46 are moved to positions corresponding to both ends 111 and 112 in the length direction 89 of the mounting portion 11. The mounting portion 11, the belt-like member 8, the pressing portion 12, and the pair of moving rods 13 and 14 when the both ends 68 and 69 in the length direction 89 of the loop piece 7 are sandwiched from above and below by the pair of holding portions 41 and 46. FIG. 4 is a corresponding view of FIG. 3 schematically showing the positional relationship between the tip portions of a pair of sandwiching portions 41 and 46. It is a top view of the 1st apparatus 10 and the 2nd apparatus 40 when a pair of clamping parts 41 and 46 clamp the loop piece 7, and the support stand 54 moved to the standby position. FIG. 6 is a plan view of the sewing machine 3 and the second device 40 when the support portion 51 is located at the supply position and the support base 54 is at the standby position. FIG. 7 is a left side view of the loop piece 7 and the presser 82 when the presser 82 presses the loop piece 7. FIG. 10 is a left side view of the loop piece 7 and the presser 82 when the loop piece 7 is pressed when the first members 42 and 47 are separated from the second members 43 and 48, respectively. FIG. 6 is a left side view of the pair of sandwiching portions 41, 46, the loop piece 7, and the presser 82 when the pair of sandwiching portions 41, 46 are moved outward in the length direction 88 of the loop piece 7. FIG. 7 is a left side view of the loop piece 7 and the presser 82 when the sewing machine 3 sews the loop piece 7 to the cloth 9.

  An embodiment of the present invention will be described with reference to the drawings. The present embodiment is an example in which the present invention is applied to a loop piece supply device 2 that supplies a loop piece for passing a belt to body material such as pants. The physical structure of the sewing system 1, the loop piece supply device 2, and the sewing machine 3 will be described with reference to FIGS. In the following description, the top, bottom, left and right, front and back indicated by arrows in the figure are used.

  The sewing system 1 creates a loop piece 7 and sews the loop piece 7 to the body material. As shown in FIG. 1, the sewing system 1 includes a loop piece supply device 2 and a sewing machine 3. The loop piece 7 is a member obtained by bending a belt-like member 8 (see FIG. 11) in the length direction of the belt-like member 8. The loop piece supply device 2 bends both ends in the length direction of the belt-like member 8 to create the loop piece 7. The loop piece supply device 2 supplies the loop piece 7 to the sewing machine 3. The sewing machine 3 sews both ends in the length direction of the loop piece 7 supplied by the loop piece supply device 2 to the body cloth. The loop piece supply device 2 is disposed adjacent to the sewing machine 3.

  The loop piece supply device 2 includes a first device 10, a second device 40, and a drive unit 66. In plan view, the longitudinal direction of the first device 10 is substantially perpendicular to the longitudinal direction (front-rear direction) of the sewing machine 3. The first device 10 generates a band-shaped member 8 having a predetermined length from the continuous band-shaped member, and bends the band-shaped member 8.

  The 1st apparatus 10 is mainly provided with the supply part 15, the cutting | disconnection part 18, the mounting part 11, the press part 12, a pair of moving rods 13 and 14, and the drive parts 21-27 (refer FIG. 8). The supply unit 15 holds the continuous strip-shaped member, pulls out the continuous strip-shaped member having a predetermined length, and supplies it to the placement unit 11. The supply unit 15 includes a holding unit 16 and a drawing unit 17. The holding | maintenance part 16 hold | maintains a continuous strip | belt-shaped member. The drawing unit 17 obtains power from the driving unit 23, and moves the drawing unit 17 from the standby position shown in FIG. The standby position is a position where the drawer portion 17 is on the left side of the placement portion 11. The gripping position is a position at which one end of the continuous belt-like member held by the holding part 16 is arranged above the gripping member 172 of the drawer part 17. Specifically, the stopper 29 fixed to the arm portion of the drive unit 23 is a position where the stopper 29 comes into contact with the main body of the drive unit 23.

  The lead-out part 17 includes gripping members 171 and 172 at the right end. The grip members 171 and 172 extend in the length direction of the continuous belt-shaped member. The gripping member 171 can move to the gripping member 172 side. The drawer 17 receives power from the drive unit 24 (see FIG. 8) and moves the gripping member 171 to the gripping member 172 side. The drawing portion 17 grips one end portion (left end) of the continuous belt-shaped member held by the holding portion 16 with the holding members 171 and 172 sandwiched in the vertical direction. The drawing unit 17 obtains power from the driving unit 23 and draws the continuous belt-shaped member from the upstream side (holding unit 16 side) to the downstream side by a predetermined length and supplies it to the mounting unit 11. After supplying the continuous belt-shaped member to the placement unit 11, the drawing unit 17 obtains power from the driving unit 25 and moves to the standby position. The drive units 23 to 25 are air cylinders. In the following description, the length direction and the width direction of the continuous belt-shaped member are used. In the present embodiment, the length direction of the continuous belt-shaped member coincides with the longitudinal direction of the continuous belt-shaped member. This direction coincides with the moving direction when the drawer portion 17 pulls out the continuous belt-like member. The width direction of the continuous strip member is orthogonal to the length direction on the extending surface of the continuous strip member. The length direction and width direction of the continuous band-shaped member coincide with the length direction and width direction of the band-shaped member 8 (loop piece 7).

  The cutting unit 18 cuts the continuous band-shaped member supplied from the supply unit 15 to the mounting unit 11 to form the band-shaped member 8. The cutting part 18 is between the holding part 16 and the mounting part 11 in the left-right direction. The cutting unit 18 includes a blade 19 and a blade receiver 20. The blade 19 is located above the supply path of the continuous strip member. The blade receiver 20 is positioned below the blade 19 with the supply path in between. The blade 19 has a blade portion extending substantially parallel to the width direction of the continuous belt-like member (front-rear direction) on the blade receiver 20 side (lower end). As shown in FIG. 4, the blade 19 is connected to the lower end of the drive unit 26. The drive unit 26 is an air cylinder and moves the blade 19 in the vertical direction. When the drive unit 26 moves the blade 19 downward from the position shown in FIG. 4, the blade 19 moves from the standby position shown in FIG. 4 to the cutting position. The standby position is a position where the blade 19 is positioned above the cutting position. The cutting position is a position where the blade portion of the blade 19 contacts the continuous strip member. The blade receiver 20 receives the blade 19 moved in the cutting direction. The drive unit 27 is located below the blade receiver 20. The drive unit 27 is an air cylinder. The blade receiver 20 can move in the vertical direction with power from the drive unit 27. When the driving unit 26 moves the blade 19 downward from the position shown in FIG. 4, the blade receiver 20 receives power from the driving unit 27 and moves upward. The blade 19 moves across the supply path of the continuous strip member and cuts the continuous strip member on the supply path.

  The mounting portion 11 is a plate member having a rectangular shape in plan view. The placement portion 11 has a placement surface 113 (see FIG. 11) on which the central portion in the length direction of the belt-like member 8 is placed. The loop piece supply device 2 according to the present embodiment places the continuous band-shaped member supplied by the drawing unit 17 on the mounting surface 113 of the mounting unit 11, and cuts the continuous band-shaped member with a cutter device to form a band having a predetermined length. Create a member. The placement surface 113 is a surface facing the pressing portion 12 among the surfaces of the placement portion 11, and is the upper surface of the placement portion 11. The mounting surface 113 is planar and extends in the horizontal direction. The length of the mounting portion 11 in the left-right direction is shorter than the length of the belt-shaped member 8 in the length direction. The mounting surface 113 does not come into contact with both end portions in the length direction of the band-shaped member 8. The length of the mounting portion 11 in the left-right direction corresponds to the length of the loop piece 7 in the length direction. The length of the mounting portion 11 in the front-rear direction is longer than the length of the loop piece 7 in the width direction. The first device 10 can be exchanged with one of a plurality of placement units having different lengths in the left-right direction in addition to the placement unit 11 shown in FIG. The length of the loop piece 7 can be changed by rearranging and replacing the mounting portion 11 with an object having a predetermined length.

  As shown in FIG. 5, the pressing portion 12 has a substantially rectangular parallelepiped shape extending in the front-rear direction, and an upper surface is formed in a taper shape from a substantially center in the front-rear direction toward the front end portion. The pressing portion 12 is provided at a standby position where the front end portion is spaced upward from the placement portion 11, and the rear end portion can swing around the shaft 122 as a fulcrum. The drive unit 21 is located above the pressing unit 12 and is connected between the front end of the pressing unit 12 and the shaft 122. The drive unit 21 swings the pressing unit 12 up and down around the shaft 122 as a fulcrum. The pressing unit 12 obtains power from the driving unit 21 and moves from the standby position shown in FIG. 5 to the pressing position shown in FIG. The pressing position is closer to the placement unit 11 than the standby position. When the pressing portion 12 is in the pressing position, the pressing portion 12 presses the continuous strip member (the strip member 8 and the loop piece 7) placed on the placement portion 11 from above. The length of the pressing portion 12 in the left-right direction is shorter than the length of the loop piece 7 in the length direction. The pressing part 12 is in the center part of the mounting part 11 in the left-right direction.

  As shown in FIGS. 2 and 3, the pair of moving rods 13 and 14 is located at a position spaced upward from the placement portion 11 and at a position corresponding to each of both ends 111 and 112 (see FIG. 14) of the placement portion 11. It is provided and extends in the width direction (front-rear direction) of the belt-like member 8 on which the placement portion 11 is placed. The positions corresponding to both ends of the mounting portion 11 are positions slightly outside the both ends 111 and 112 of the mounting portion 11 in the left-right direction. The pair of moving bars 13, 14 can move in a direction orthogonal to the placement unit 11 by obtaining power from the drive unit 22. When the pressing unit 12 presses the belt-shaped member 8, the pair of moving bars 13 and 14 is placed from a standby position (see FIGS. 2 to 5) that receives power from the drive unit 22 and is spaced upward from the placement unit 11. It moves to the lowered position (see FIG. 12) on the extending plane of the part 11. In this case, the pair of moving bars 13 and 14 and the mounting portion 11 are on the same horizontal plane. The drive units 21 and 22 are air cylinders. The distance between the pair of moving bars 13 and 14 can be changed according to the length in the left-right direction of the mounting portion attached to the first device 10.

  The second device 40 creates the loop piece 7 in cooperation with the first device 10, and supplies the created loop piece 7 to the sewing machine 3. As shown in FIGS. 6 and 7, the second device 40 mainly includes a pair of clamping portions 41 and 46, a support portion 51, shafts 52 and 53, a support base 54, a guide portion 55, a connection portion 56, and drive portions 61 to 65. Prepare for. In the following description, the pair of sandwiching portions 41 and 46 in the longitudinal direction of the second device 40 in FIG. 1 is defined as one end side of each component of the second device 40 and the second device 40. The shaft 52 side in the longitudinal direction of the second device 40 is defined as the second device 40 and the other end side of each component of the second device 40.

  The pair of sandwiching portions 41 and 46 are respectively provided at both ends 86 and 87 (see FIG. 11) of the belt-like member 8 pressed by the pressing portion 12 along both left and right ends 111 and 112 (see FIG. 14) of the mounting portion 11. And bend the loop piece 7. A pair of clamping parts 41 and 46 clamp the both ends 68 and 69 (refer FIG. 14) of the length direction of the loop piece 7 from an up-down direction. The pair of sandwiching portions 41, 46 have rod-shaped first members 42, 47 and second members 43, 48 that respectively extend in the width direction of the band-shaped member 8.

  As shown in FIGS. 6 and 7, the clamping portion 41 includes a first member 42, a second member 43, a spring 44, and a shaft 45. The first member 42 and the second member 43 are rod-shaped members. The first member 42 can swing about the shaft 45 with respect to the second member 43. The spring 44 biases the first member 42 in a direction away from the second member 43. The first member 42 receives power from the drive unit 61 and moves to the second member 43 side (downward). Similarly, as shown in FIG. 10, the holding portion 46 includes a first member 47, a second member 48, a spring 49, and a shaft 50. The first member 47 and the second member 48 are rod-shaped members. The first member 47 can swing about the shaft 50 with respect to the second member 48. The spring 49 biases the first member 47 in a direction away from the second member 48. The first member 47 obtains power from the drive unit 62 and moves to the second member 48 side (downward). The drive units 61 and 62 are air cylinders. The drive units 61 and 62 are provided above the first members 42 and 47.

  The clamping part 41 is arranged in parallel with the clamping part 46. The drive part 63 can change the space | interval on the horizontal surface of the clamping part 41 and the clamping part 46 into the clamping position shown in FIG. 1, and the separation position shown in FIG. The drive unit 63 is an air chuck. The drive unit 63 translates each of the pair of sandwiching portions 41 and 46 equally and changes the interval between the pair of sandwiching portions 41 and 46. The interval between the clamping part 41 and the clamping part 46 at the clamping position is narrower than the length of the loop piece 7 in the length direction. The interval between the clamping part 41 and the clamping part 46 at the separated position is wider than the length of the loop piece 7 in the length direction.

  The support part 51 is a rectangular plate-shaped member. The support portion 51 supports the pair of sandwiching portions 41 and 46 via the support base 54 and the guide portion 55. The support portion 51 fixes one end portion (upper end portion) of the shaft 53 at a substantially central portion in the longitudinal direction of the support portion 51. The shaft 53 has a round bar shape extending in the vertical direction. The other end (lower end) of the shaft 53 is fixed to the work table 5 with a screw 57. The shaft 53 supports the support portion 51 in a swingable manner. The connecting portion 56 is connected to the lower surface on one end side of the support portion 51. The support part 51 is connected to the drive part 66 via the connection part 56. The support part 51 can obtain power from the drive part 66 and can swing between a supply position shown in FIG. 1 and a clamping position shown in FIG. 7 with the shaft 53 as a fulcrum. The supply position is a position where the longitudinal direction of the second device 40 is orthogonal to the longitudinal direction of the sewing machine 3. The longitudinal direction of the sewing machine 3 is the front-rear direction. When the support portion 51 is in the supply position, each of the pair of sandwiching portions 41 and 46 faces the sewing machine 3. The clamping position is a position where the longitudinal direction of the second device 40 is orthogonal to the longitudinal direction of the first device 10. The longitudinal direction of the first device 10 is the left-right direction. When the support part 51 is in the clamping position, each of the pair of clamping parts 41 and 46 faces the first device 10.

  The support base 54 supports the lower surfaces on the other end side of the pair of sandwiching portions 41 and 46. The guide portion 55 has a linear rail shape extending from one end side to the other end side, and supports the support base 54 in a movable manner. The support base 54 obtains power from the drive unit 64 and moves between the standby position shown in FIG. 7 and the extended position shown in FIG. 1 along the guide unit 55. The drive unit 64 is an air cylinder. The standby position is the position of the support base 54 when the arm portion of the drive unit 64 is retracted to the other end side. The extending position is the position of the support base 54 when the arm portion of the drive unit 64 has advanced to one end side. Since the support base 54 supports the lower surface on the other end side of the pair of sandwiching portions 41, 46, when the support base 54 moves, the pair of sandwiching portions 41, 46 also move with the support base 54. The shaft 52 is provided above the rear end of the support portion 51. The support unit 51 can swing with the shaft 52 as a fulcrum by obtaining power from the drive unit 65. The drive unit 65 changes the vertical position of the pair of clamping units 41 and 46 by the support unit 51 swinging about the shaft 52 as a fulcrum.

  The sewing machine 3 is an industrial sewing machine having a known configuration. As shown in FIGS. 1 and 6, the sewing machine 3 has a bed portion 71, a pillar portion 72, an arm portion 73, and a head portion 74. The bed portion 71 extends in the front-rear direction, and is provided with a needle plate 77, a presser drive mechanism 81 (see FIG. 8), and a presser 82 at the upper portion. The needle plate 77 has a needle hole 78. The presser drive mechanism 81 is provided in front of the leg post 72. The presser drive mechanism 81 obtains power from the drive unit 97 (see FIG. 8) and moves the presser 82 up and down, left and right, and front and rear. The presser 82 presses the loop piece 7 located above the needle plate 77 from above. As shown in FIG. 18, the front end side (left end side) of the presser 82 is front end portions 821 and 822 that bifurcate back and forth. The tip portions 821 and 822 extend in the left-right direction. The presser 82 presses the inner sides of both ends in the length direction of the loop piece 7 at the tip portions 821 and 822.

  The bed portion 71 includes a hook mechanism, a feed mechanism, a thread trimming mechanism 80 (see FIG. 8) and the like (not shown). The hook mechanism rotates a rotary hook (not shown) that stores the lower thread. The feed mechanism feeds the cloth 9 in the left-right direction and the front-rear direction. The feed mechanism moves together with the presser drive mechanism 81 in the left-right direction and the front-rear direction. The pedestal 72 extends upward from the rear end of the bed 71. The pedestal 72 has a sewing machine motor 98 and the like inside. The arm portion 73 extends forward from the upper end portion of the pedestal column portion 72. The arm portion 73 faces the upper surface of the bed portion 71. The arm portion 73 includes a main shaft 79 and the like inside. The rear end of the main shaft 79 is connected to the sewing machine motor 98. The sewing machine motor 98 rotates the main shaft 79. The head 74 includes a needle bar vertical movement mechanism, a scale drive mechanism, and the like (not shown).

  The main shaft 79 transmits the rotational force accompanying the driving of the sewing machine motor 98 to the needle bar vertical movement mechanism and the balance drive mechanism, and drives the needle bar vertical movement mechanism and the balance drive mechanism. The needle bar vertical movement mechanism moves the needle bar 75 up and down. The lower end side of the needle bar 75 is exposed from the lower side of the head 74 and extends downward. The needle bar 75 can be fitted with a sewing needle 76 at the lower end. When the needle bar 75 is lowered to the lowest position, the lower end of the sewing needle 76 passes through a needle hole 78 provided in the needle plate 77 and reaches the rotary hook. The rotary hook cooperates with the needle bar 75 and entangles the lower thread with the upper thread held by the sewing needle 76. The balance driving mechanism pulls the upper thread entangled with the lower thread onto the needle plate 77. The sewing machine 3 forms stitches on the cloth 9.

  The electrical configuration of the sewing system 1 will be described with reference to FIG. As shown in FIG. 8, the sewing system 1 includes a control unit 4, a loop piece supply device 2, and a sewing machine 3. The control unit 4 controls the loop piece supply device 2 and the sewing machine 3 synchronously. The control unit 4 includes a CPU 101, a ROM 102, a RAM 103, a signal line 104, an input / output I / F 105, and an external communication I / F 106. The CPU 101, ROM 102, and RAM 103 are electrically connected to the input / output I / F 105 through the signal line 104. The external communication I / F 106 is electrically connected to the input / output I / F 105. The CPU 101 controls the loop piece supply device 2 and the sewing machine 3 and executes various calculations and processes related to creation and sewing of the loop piece 7 according to various programs stored in the ROM 102. The ROM 102 stores various programs, various initial setting parameters, and the like. The RAM 103 temporarily stores set values, calculation results of the CPU 101, and the like. The external communication I / F 106 manages communication with an external device. The CPU 101 communicates with the loop piece supply device 2 and the sewing machine 3 via the external communication I / F 106 and the input / output I / F 105.

  The loop piece supply device 2 includes a CPU 31, a ROM 32, a RAM 33, a signal line 34, an input / output I / F 35, an external communication I / F 36, and drive units 21 to 27 and 61 to 66. The CPU 31, ROM 32, and RAM 33 are electrically connected to the input / output I / F 35 through the signal line 34. The external communication I / F 36 and the drive units 21 to 27 and 61 to 66 are electrically connected to the input / output I / F 35. The CPU 31 controls the loop piece supply device 2 in accordance with instructions from the control unit 4 and executes various calculations and processes related to the creation and supply of the loop piece 7. The ROM 32 stores various programs, various initial setting parameters, and the like. The RAM 33 temporarily stores set values, calculation results of the CPU 31, and the like. The external communication I / F 36 manages communication with an external device. The CPU 31 communicates with the control unit 4 via the external communication I / F 36 and the input / output I / F 35.

  The drive unit 21 is a power source of the pressing unit 12 and swings the pressing unit 12 upward or downward to the mounting surface 113 of the mounting unit 11 in accordance with an instruction from the CPU 31. The drive unit 22 is a power source for the pair of moving bars 13 and 14, and moves the pair of moving bars 13 and 14 in a direction perpendicular to the upper surface of the mounting unit 11 in accordance with instructions from the CPU 31. The drive unit 22 switches the position of the pair of moving bars 13 and 14 to a standby position spaced upward from the placement unit 11 and a lowered position on the extending plane of the placement unit 11 in accordance with an instruction from the CPU 31. The drive unit 23 pulls out the continuous belt-like member pulled out by the drawing unit 17 to the mounting surface 113 of the mounting unit 11 in accordance with an instruction from the CPU 31. The drive unit 24 is a power source for the gripping operation of the drawer unit 17 and executes an operation of gripping the continuous belt-like member of the drawer unit 17 in accordance with an instruction from the CPU 31. The drive unit 25 is a drive source for the movement operation of the drawer unit 17 in the left-right direction, and moves the drawer unit 17 leftward or rightward according to an instruction from the CPU 31. The drive unit 26 is a power source for the movement operation of the blade 19 and moves the blade 19 upward or downward in accordance with an instruction from the CPU 31. The drive unit 27 is a power source for adjusting the vertical position of the blade receiver 20 and moves the blade receiver 20 upward or downward in accordance with an instruction from the CPU 31.

  The drive unit 61 is a drive source of the first member 42 of the clamping unit 41 and moves the first member 42 to the second member 43 side (downward) in accordance with an instruction from the CPU 31. The drive unit 62 is a drive source of the first member 47 of the clamping unit 46, and moves the first member 47 to the second member 48 side (downward) in accordance with an instruction from the CPU 31. The drive unit 63 is a drive source for changing the interval between the clamping unit 41 and the clamping unit 46, and makes the interval between the clamping unit 41 and the clamping unit 46 wider or narrower than before the change in accordance with an instruction from the CPU 31. The drive unit 64 is a drive source for moving the pair of clamping units 41 and 46 in the width direction of the loop piece 7, and the pair of clamping units 41 and 46 is connected to one end side or the other end of the second device 40 in accordance with instructions from the CPU 31. Move to the side. The drive unit 65 is a drive source for adjusting the vertical position of the pair of clamping units 41 and 46, and swings the pair of clamping units 41 and 46 upward or downward in accordance with an instruction from the CPU 31. The drive unit 66 is a drive source for swinging the second device 40 (support unit 51) in plan view, and swings the second device 40 in accordance with an instruction from the CPU 31.

  The sewing machine 3 includes a CPU 91, a ROM 92, a RAM 93, a signal line 94, an input / output I / F 95, an external communication I / F 96, driving units 97 and 99, and a sewing machine motor 98. The CPU 91, ROM 92, and RAM 93 are electrically connected to the input / output I / F 95 via the signal line 94. The external communication I / F 96, the drive units 97 and 99, and the sewing machine motor 98 are electrically connected to the input / output I / F 95. The CPU 91 controls the sewing machine 3 in accordance with an instruction from the control unit 4 and executes various calculations and processes related to the placement and sewing of the loop piece 7. The ROM 92 stores various programs, various initial setting parameters, and the like. The RAM 93 temporarily stores set values, calculation results of the CPU 91, and the like. The external communication I / F 96 manages communication with an external device. The CPU 91 communicates with the control unit 4 via the external communication I / F 96 and the input / output I / F 95. The drive unit 97 is a drive source of the presser drive mechanism 81, and the presser drive mechanism 81 moves the presser 82 up and down, right and left, and back and forth according to instructions from the CPU 91. The sewing machine motor 98 is a drive source for the main shaft 79 and rotates the main shaft 79 in accordance with an instruction from the CPU 91. The drive unit 99 is a power source of the thread trimming mechanism 80, and drives the thread trimming mechanism 80 according to the CPU 91 to cut the upper thread and the lower thread.

  With reference to FIG. 9, a sewing control process executed in cooperation by the CPU 101 of the control unit 4, the CPU 31 of the loop piece supply device 2, and the CPU 91 of the sewing machine 3 will be described. When an operator turns on the sewing system 1 and operates a not-shown operation unit to input a start instruction, the CPU 101 reads a sewing control processing program from the ROM 102 and executes the processing according to the instruction included in the program. At the start of processing, the loop piece supply device 2 is in the posture shown in FIG. That is, the support part 51 is in the clamping position. A pair of clamping parts 41 and 46 are in a separated position. The support base 54 is in the standby position. Although not shown, the pressing portion 12, the drawing portion 17, and the blade 19 are each in a standby position. The grip members 171 and 172 of the drawing portion 17 are separated from each other.

  As shown in FIG. 9, the CPU 101 outputs to the loop piece supply device 2 an instruction to execute the process of supplying the continuous strip member to the placement unit 11. The CPU 31 receives an instruction from the CPU 101, and sequentially executes the next processing according to the instruction. The CPU 31 controls the drive units 23 to 25 to pull out the continuous belt-like member by a predetermined length and supplies it to the placement unit 11 (S1). Specifically, the CPU 31 drives the drive unit 23 to move the drawing unit 17 of the supply unit 15 from the standby position shown in FIGS. 1 and 2 to the gripping position. The CPU 31 drives the drive unit 24 to move the gripping member 171 to the gripping member 172 side, and grips one end of the continuous belt-shaped member up and down with the gripping members 171 and 172. The CPU 31 drives the driving unit 23 to move the drawing unit 17 from the gripping position to the cutting position. The cutting position is between the standby position and the gripping position. The drawer portion 17 located at the cutting position is on the left side of the placement portion 11.

  CPU31 controls the drive part 21 and moves the press part 12 to the mounting part 11 side (S2). Specifically, the CPU 31 drives the drive unit 21 to move the pressing unit 12 from the standby position shown in FIG. 5 to the pressing position shown in FIG. The pressing part 12 presses the continuous belt-like member from the upper side. CPU31 controls the drive parts 26 and 27, moves the blade 19 and the blade receiver 20 from the standby position shown in FIG. 2, FIG. 4 to a cutting position, and cut | disconnects a continuous strip member (S3). After cutting, the CPU 31 controls the drive units 26 and 27 to move the blade 19 and the blade receiver 20 from the cutting position to the standby position. The CPU 31 controls the drive unit 24 to separate the grip member 171 from the grip member 172. The CPU 31 controls the drive unit 25 to move the drawing unit 17 from the cutting position to the standby position.

  As shown in FIG. 11, the loop piece supply device 2 places the belt-like member 8 having a predetermined length on the placement surface 113 of the placement unit 11 in the processes of S <b> 1 to S <b> 3. Both end portions 86 and 87 in the length direction 89 of the band-shaped member 8 are not in contact with the placement surface 113. That is, both end portions 86 and 87 in the length direction 89 of the band-shaped member 8 are outside the both ends 111 and 112 of the mounting portion 11 and protrude from the mounting portion 11. The center C in the length direction 89 of the belt-like member 8 coincides with the center C in the left-right direction of the placement portion 11. The CPU 31 controls the drive unit 22 to move the pair of moving bars 13 and 14 from the standby position shown in FIG. 11 to the lowered position on the extended surface 90 of the mounting unit 11 shown in FIG. 12 (S4). The extended surface 90 is a horizontal plane that passes through the center of the mounting portion 11 in the vertical direction. The extending surface 90 of the mounting unit 11 may be a plane including the upper surface (surface on the pressing unit 12 side) of the mounting unit 11 and a plane including the lower surface of the mounting unit 11. The lowered position may be a position where each of the pair of moving bars 13, 14 crosses or touches the extended surface 90. As shown in FIG. 12, the pair of moving bars 13 and 14 push down each of the both end portions 86 and 87 of the belt-like member 8 at the lowered position, and each of the both end portions 86 and 87 of the belt-like member 8 along the mounting portion 11. Bend down and maintain.

  The CPU 31 controls the drive units 64 and 63 to move the pair of clamping units 41 and 46 to a position corresponding to the placement unit 11 (S5). Specifically, the CPU 31 controls the drive unit 64 to move the support base 54 from the standby position shown in FIGS. 7 and 10 to the extended position shown in FIG. At this time, one end (tip) of the pair of sandwiching portions 41 and 46 is located outside the placement portion 11 in the length direction 89 as indicated by a two-dot chain line in FIG. One ends (tips) of the first members 42 and 47 are on the upper side of the placement portion 11. One ends (tips) of the second members 43 and 48 are located below the placement unit 11. As shown in FIG. 15, the CPU 31 controls the driving unit 63 to move each of the pair of clamping units 41 and 46 to positions corresponding to both ends 111 and 112 of the mounting unit 11. The positions corresponding to both ends 111 and 112 of the mounting portion 11 are the distances from each of the pair of sandwiching portions 41 and 46 to both ends 111 and 112 of the mounting portion 11 from each of the pair of sandwiching portions 41 and 46. 11 is shorter than the distance to the center of the length direction 89. Specifically, in the longitudinal direction 89 of the belt-like member 8, the parallel movement is performed from a position outside the both ends 111 and 112 of the mounting portion 11 to an inside position indicated by a solid line in FIG. In the longitudinal direction 89 of the band-shaped member 8, the positions inside the both ends 111 and 112 of the mounting portion 11 are the center positions in the length direction 89 of the sandwiching portions 41 and 46, respectively, than the both ends 111 and 112 of the mounting portion 11. This is the inner position. In FIG. 14, the left end of the clamping unit 41 is on a plane D <b> 1 passing through the left end 111 of the placement unit 11. The right end of the clamping unit 46 is on a plane D2 that passes through the right end 112 of the placement unit 11. The planes D1 and D2 are orthogonal to the extended surface 90 (see FIG. 12) of the placement unit 11. The second members 43 and 48 bend each of both end portions 86 and 87 of the band-shaped member 8 inward in the longitudinal direction 89 of the band-shaped member 8. As shown in FIG. 14, the pair of sandwiching portions 41, 46 bend the end portions 86, 87 of the band-shaped member 8 approximately 180 degrees along the placement portion 11 to form the loop pieces 7.

  The CPU 31 controls the drive units 61 and 62 to clamp the both end portions 68 and 69 in the length direction 89 of the loop piece 7 from above and below with the pair of sandwiching portions 41 and 46 (S6). Specifically, the first members 42 and 47 of the pair of sandwiching portions 41 and 46 obtain power from the driving portions 61 and 62 and move to the second members 43 and 48 side. As shown in FIG. 16, the pair of holding portions 41 and 46 hold the loop piece 7 in the vertical direction by the first members 42 and 47 and the second members 43 and 48, respectively. The CPU 31 controls the drive unit 22 to move the pair of moving bars 13 and 14 from the lowered position shown in FIG. 16 to the standby position shown in FIGS. 3 and 5 (S7).

  The CPU 31 drives the drive unit 21 to move the pressing unit 12 from the pressing position shown in FIG. 16 to the standby position shown in FIG. 5 (S8). CPU31 drives the drive part 64 and moves a pair of clamping parts 41 and 46 to the width direction of the loop piece 7 (S9). Specifically, the CPU 31 drives the drive unit 64 to move the support base 54 from the extended position to the standby position shown in FIG. As shown in FIG. 17, the pair of sandwiching portions 41 and 46 move forward while pressing and holding both end portions 68 and 69 of the loop piece 7. The loop piece 7 moves in parallel with the pair of sandwiching portions 41 and 46 and is separated from the placement portion 11. When the pair of sandwiching portions 41 and 46 and the loop piece 7 are separated from the placement portion 11, the first members 42 and 47 move to the second members 43 and 48, respectively, and the first members 42 and 47 and the second member 43 are moved. , 48 is shortened.

  After moving the pair of sandwiching portions 41 and 46 and separating the loop piece 7 from the placement portion 11, the CPU 31 drives the drive portion 66 so that the pair of sandwiching portions 41 and 46 are opposed to the sewing machine 3. 51 is swung (S10). Specifically, the CPU 31 drives the drive unit 66 to swing the support unit 51 from the clamping position shown in FIG. 17 to the supply position shown in FIG. CPU31 drives the drive part 64 and moves a pair of clamping parts 41 and 46 to the width direction (left side) of the loop piece 7 (S11). When the pair of sandwiching portions 41 and 46 are moved in the width direction of the loop piece 7, the pair of sandwiching portions 41 and 46 are positioned above the cloth 9 (needle plate 77). The cloth 9 is located on the upper surface of the needle plate 77. Specifically, the CPU 31 drives the drive unit 64 to move the support base 54 from the standby position shown in FIG. 18 to the extended position shown in FIG. CPU31 drives the drive part 65 and moves a pair of clamping parts 41 and 46 below (S12). The tip-side lower surfaces of the pair of sandwiching portions 41 and 46 are in contact with the cloth 9 upper surface. At this time, as shown in FIGS. 1 and 6, the second device 40 is in the supply posture. CPU31 outputs the instruction | indication which shows that the process of S12 was complete | finished to the control part 4. FIG.

  The CPU 101 of the control unit 4 receives the instruction from the loop piece supply device 2 and outputs an instruction to lower the presser 82 to the sewing machine 3. The CPU 91 of the sewing machine 3 receives the instruction output from the control unit 4 and drives the drive unit 97 to move the presser 82 downward (S13). As shown in FIG. 19, the presser 82 moves from the standby position indicated by the one-dot chain line to the sewing position indicated by the solid line. The standby position is a position where the presser 82 is spaced above the cloth 9 positioned on the upper surface of the needle plate 77 and the loop piece 7 positioned above the cloth 9. The sewing position is a position where the presser 82 presses the loop piece 7 from above. Bifurcated tip portions 821 and 822 of the presser 82 are located between the pair of sandwiching portions 41 and 46, respectively. The distal end portion 821 holds a range including the range 38. Region 38 includes one folded portion 118 of loop piece 7. The tip 822 holds down a range including the range 39. The region 39 includes the other bent portion 119 of the loop piece 7. The presser 82 presses the range including the pair of bent portions 118 and 119 of the loop piece 7 from above. CPU91 outputs the instruction | indication which shows that the process of S13 was complete | finished to the control part 4. FIG. The CPU 101 of the control unit 4 receives the instruction output from the sewing machine 3, and outputs an instruction to execute a process of removing the pair of clamping units 41 and 46 from the loop piece 7 to the loop piece supply device 2.

  The CPU 31 of the loop piece supply device 2 receives the instruction output from the control unit 4 and drives the drive units 61 and 62 to release the holding of the loop piece 7 by the pair of holding units 41 and 46 (S14). As shown in FIG. 20, the CPU 31 drives the drive units 61 and 62 to separate the first members 42 and 47 from the second members 43 and 48.

  CPU31 moves each of a pair of clamping parts 41 and 46 to the outer side of the length direction 88 of the loop piece 7 (S15). As shown in FIG. 21, the presser 82 presses the loop piece 7 while maintaining the positions of the bent portions 118 and 119 of the loop piece 7.

  CPU31 drives the drive part 64 and moves a pair of clamping parts 41 and 46 to the width direction (right side) of the loop piece 7 (S16). Specifically, the CPU 31 drives the drive unit 64 to move the support base 54 from the extended position to the standby position (S16). The CPU 31 outputs an instruction indicating that the process of S <b> 16 has been completed to the control unit 4. The CPU 101 of the control unit 4 receives the instruction output from the loop piece supply device 2 and outputs an instruction to execute a process of sewing the loop piece 7 on the cloth 9 to the sewing machine 3.

  The CPU 91 of the sewing machine 3 receives the instruction output from the control unit 4 and drives the drive unit 97 and the sewing machine motor 98 to sew both end portions 68 and 69 of the loop piece 7 to the cloth 9 (S17). Specifically, the CPU 91 drives the sewing machine motor 98 to sew. When the sewing process is completed, the CPU 91 drives the drive unit 97 to cut the upper thread and the lower thread (S17). As shown in FIG. 22, the sewing machine 3 forms seams 151 and 152 indicated by dotted lines at both end portions 68 and 69 of the loop piece 7. The stitches 151 and 152 are respectively outside the tip portions 821 and 822 of the presser 82 in the length direction 88 of the loop piece 7.

  The CPU 91 of the sewing machine 3 outputs to the control unit 4 an instruction for completing the process of S17. The CPU 31 of the loop piece supply device 2 drives the drive unit 66 to swing the support unit 51 from the supply position to the clamping position (S18). The CPU 31 outputs an instruction that the process of S18 is completed to the control unit 4. When the CPU 101 of the control unit 4 receives an instruction from the sewing machine 3 for completing the process of S17 and receives an instruction for completing the process of S18 from the loop piece supply device 2, the sewing control process is terminated.

  In the sewing system 1, the sewing system 1, the loop piece supply device 2, and the sewing machine 3 correspond to the loop piece sewing system, the loop piece supply device, and the sewing device of the present invention, respectively. A pair of clamping parts 41 and 46 are corresponded to a pair of clamping part of this invention. The presser 82 corresponds to the presser part of the present invention. The drive unit 64 and the CPU 31 that executes the process of S11 in FIG. 9 correspond to the first moving means of the present invention. The CPU 91 that executes the processing of the drive unit 97 and S13 corresponds to the presser control means of the present invention. The CPU 31 that executes the processing of the drive unit 63 and S15 corresponds to the second moving means of the present invention. The drive parts 61 and 62 correspond to the clamping part drive means of the present invention. The CPU 31 that executes the processes of the springs 44, 49, and S14 corresponds to the clamping unit control means of the present invention.

  When the presser foot 82 presses the loop piece 7 (S13), the sewing system 1 moves the pair of holding portions 41 and 46 to the outside in the length direction 88 of the loop piece 7 (S15). Therefore, the sewing system 1 can suppress both ends of the length direction 88 of the loop piece 7 from being distorted with respect to the width direction of the loop piece 7 as compared with the conventional case where the clamping portion is moved in the width direction of the loop piece. The sewing system 1 can suppress the quality of the sewing finish of the loop piece 7 from being deteriorated.

  The tip portions 821 and 822 of the presser 82 respectively press the regions 38 and 39 including the pair of bent portions 118 and 119 of the loop piece 7 from above. In the sewing system 1, when the pair of sandwiching portions 41 and 46 moves outward in the length direction 88 of the loop piece 7 (S 15), the bent portions 118 and 119 of the loop piece 7 move together with the pair of sandwiching portions 41 and 46. Can be suppressed. The sewing system 1 can suppress the length of the loop piece 7 in the length direction from being changed from the length before the pair of sandwiching portions 41 and 46 is moved. Therefore, the sewing system 1 can suppress the quality of the sewing finish of the loop piece 7 from being deteriorated.

  When the sewing system 1 drives the drive portions 61 and 62 to release the holding of the loop piece 7 by the pair of holding portions 41 and 46 (S14), the pair of holding portions 41 and 46 are moved in the length direction 88 of the loop piece 7. It moves outside (S15). Therefore, in the sewing system 1, the loops together with the pair of sandwiching portions 41 and 46 are compared with the case where each of the pair of sandwiching portions 41 and 46 moves outward in the length direction 88 of the loop piece 7 with the loop piece 7 sandwiched in the vertical direction. It can suppress more reliably that the bending parts 118 and 119 of the piece 7 move. Therefore, the sewing system 1 can suppress the quality of the sewing finish of the loop piece 7 from being deteriorated.

  The loop piece supply system of the present invention can be variously modified in addition to the above embodiment. The control unit 4 may be in the sewing machine 3 or the loop piece supply device 2. The CPU 31 of the loop piece supply device 2 may directly control the drive units 97 and 99 and the sewing machine motor 98 of the sewing machine 3. The configurations of the loop piece supply device 2 and the sewing machine 3 may be changed as appropriate. The sewing system 1 may omit the pair of moving bars 13 and 14 as necessary. When the loop piece supply device 2 does not include the pair of moving rods 13 and 14, for example, the pair of sandwiching portions 41 and 46 moves downward from the upper ends 86 and 87 of the band-shaped member 8 to both ends of the band-shaped member 8. The portions 86 and 87 may be bent as shown in FIG.

  When the loop piece supply device 2 includes the support portion 51, the shaft 53, and the drive portion 66, the swing amount of the support portion 51 by the drive portion 66 depends on the arrangement of the sewing machine 3 and the loop piece supply device 2, and the loop piece with respect to the longitudinal direction of the sewing machine 3 7 may be changed according to the mounting direction. When the throat plate 77, the placement portion 11, and the pair of clamping portions 41 and 46 are arranged on the same straight line as in the prior art, the loop piece supply device 2 omits the support portion 51, the shaft 53, and the drive portion 66 as appropriate. Then, the process of S10 may be omitted.

  The shape, size, arrangement, and the like of the presser 82 may be changed as appropriate. The presser 82 has the tip portions 821 and 822 divided into two forks at the tip, but the tip of the presser 82 need not be divided into two forks. The front ends 821 and 822 of the presser 82 extend from the right side to the left side in FIG. 1 but may be reversed. The range in which the presser 82 is pressed in the length direction of the loop piece 7 may be changed as appropriate. The sewing system 1 may omit the process of S14.

  A program including a command for the sewing system 1 to execute the sewing control process of FIG. 9 may be stored in a storage device included in the sewing system 1 before the sewing system 1 executes the program. Each of the program acquisition method, the acquisition route, and the device storing the program may be changed as appropriate. The sewing system 1 may receive a program executed by the processor from another device via a cable or wireless communication and store the program in a storage device such as a flash memory. Other devices include, for example, a PC and a server connected via a network.

  Each step of the sewing control processing in FIG. 9 is not limited to the example executed by the CPUs 31 and 91 in accordance with the instruction from the CPU 101, and other electronic devices (for example, ASIC) may execute part or all of the processing. Each step of the above process may be distributed by a plurality of electronic devices (for example, a plurality of CPUs). Each step of the sewing process of the above embodiment can be changed in order, omitted, or added as necessary. The scope of the present invention is based on an instruction from the processor of the sewing system 1, and an operating system (OS) or the like operating on the sewing system 1 performs part or all of the actual processing, and the processing of the above embodiment is performed. A mode for realizing the function is also included.

DESCRIPTION OF SYMBOLS 1 Sewing system 2 Loop piece supply apparatus 3 Sewing machine 10 1st apparatus 13, 14 Moving bar 40 2nd apparatus 31, 91, 101 CPU
41, 46 Nipping part 42, 47 First member 43, 48 Second member 44, 49 Spring 51 Support part 53 Shaft 54 Support base 61-66, 97, 99 Drive part 81 Presser drive mechanism 82 Presser

Claims (3)

In a loop piece sewing system comprising a loop piece supply device that supplies a loop piece that is a band-like member bent at both ends in the length direction to a sewing device and a sewing device that sews the loop piece to a sewing object.
The strip-shaped member has first and second rod-shaped members extending in the width direction, and moves to a position corresponding to each of both end portions in the length direction of the strip-shaped member, thereby both ends in the length direction of the loop piece. A pair of clamping parts that clamp each of the parts from above and below by the first member and the second member;
A presser part for pressing the loop piece located above the needle plate of the sewing device from above;
First moving means for moving the pair of clamping portions onto the needle plate;
When the first moving means moves the pair of holding parts onto the needle plate, the presser control means for pressing the loop piece held by the pair of holding parts from above by the pressing part;
Loop piece comprising: a second moving means for moving each of the pair of clamping parts to the outside in the length direction of the loop piece when the presser part presses the loop piece by the presser control means. Sewing system.   2. The loop piece sewing system according to claim 1, wherein the pressing portion presses a range including a pair of bent portions of the loop piece from above. In each of the pair of holding portions, the upper first member of the pair of upper and lower first members and the second member is moved toward the lower second member, and the length direction of the loop piece Clamping part driving means for clamping each of the both end parts from above and below,
A clamping part control means for releasing the clamping of each of the pair of clamping parts by the clamping part driving means when the pressing part presses the loop piece by the pressing control means;
The second moving means moves each of the pair of holding portions to the outside of the loop piece when each of the pair of holding portions releases the holding of the loop piece by the holding portion driving means. The loop piece sewing system according to claim 1 or 2.

Images