HK1211998B - Supply device - Google Patents

Description

Supply device

Technical Field

The present invention relates to a feeding device for feeding a belt loop sheet to a sewing device.

Background

There is a tab supply device that supplies a tab to a sewing device. The waistband and other members pass between the fabric of the pants and the tab. The tab supply device disclosed in japanese patent application laid-open No. 2003-311059 cuts the continuous strip-shaped member with a cutting device to produce a strip-shaped member having a predetermined length. The belt loop sheet supply device clamps both end portions of the belt-like member with a pair of holding portions, respectively. The pair of holding parts is fork-shaped. The tab sheet supply device rotates the holding portion to bend both end portions of the belt-like member, thereby producing a tab sheet. The belt loop sheet supply device supplies a belt loop sheet to a sewing machine.

When the sewing device finishes sewing the two end parts of the belt loop piece, the bending part of the belt loop piece is positioned at the inner side of the belt loop. At this time, a string-like member such as a belt may be caught in the bent portion and difficult to pass through the inside of the belt loop.

Disclosure of Invention

The invention aims to provide a supply device which can supply a belt loop piece which enables a rope-shaped component to easily pass through the belt loop compared with the prior art to a sewing device.

The feeding device according to claim 1 is a feeding device for feeding a belt-like tab sheet to a sewing device, the feeding device including: a mounting portion having a mounting surface on which a longitudinal center portion of the belt loop piece can be mounted; a pressing portion capable of pressing the tab piece placed on the placing portion from above; a pair of clamping portions each having a first member and a second member, the first member and the second member being rod-shaped members extending in a width direction of the belt loop sheet orthogonal to the longitudinal direction; and an interval changing part which can make the pair of clamping parts move towards the direction of approaching each other; a length of the placement portion in a direction parallel to a longitudinal direction of the tab piece is smaller than a length of the tab piece; the pair of holding portions are disposed at positions spaced apart from each other in the longitudinal direction of the tab piece, and hold both end portions of the tab piece pressed by the pressing portion in the longitudinal direction; the feeding device further includes a gap control unit that moves the pair of holding portions in a direction in which the pair of holding portions approach each other by the gap changing unit when the pair of holding portions hold the both end portions, respectively.

When the pair of gripping portions are moved in a direction to approach each other, the interval between the pair of gripping portions is reduced. When the interval between the pair of grip portions is narrowed, the belt loop sheet is flexed in the longitudinal direction. The supply device can supply the belt loop sheet flexed in the longitudinal direction to the sewing device. When the sewing device finishes sewing the two end parts of the belt loop piece bending in the length direction, a gap is formed at the belt loop piece. A string-like member such as a waist belt can be passed through the gap. In the case where the sewing device finishes sewing both end portions of the belt loop sheet that is not flexed in the longitudinal direction, the string-like member is easily passed through the belt loop sheet, as compared with the case where the sewing device finishes sewing both end portions of the belt loop sheet that is not flexed in the longitudinal direction. Therefore, the supply device can supply the belt loop sheet through which the string-like member is easily passed to the sewing device.

The supply device according to claim 2 further comprises: a supply unit for supplying the continuous belt-like member to the placement unit; a cutting section for cutting the continuous belt-like member supplied from the supply section to produce the belt loop sheet; and a cutting control unit for cutting the continuous belt-like member by the cutting unit when the pressing unit presses the continuous belt-like member. When the feeding device cuts the continuous belt-shaped member, the pressing portion presses the continuous belt-shaped member, and therefore, the cut surface can be prevented from being distorted in the width direction of the continuous belt-shaped member. The feeding device can improve the finished product quality of the belt loop sheet.

In the supply device according to claim 3, the first member and the second member of each of the pair of holding portions are arranged vertically, and the first member is provided above the second member; the above-mentioned feeding device further includes: a first clamp driving unit that can move the first member toward the second member for each of the pair of clamp units; and a first clamping control portion that vertically clamps the both end portions of the tab sheet with the first member and the second member by the first clamping drive portion when the pressing portion presses the tab sheet; the position of the mounting surface is different from the positions of the two end portions of the pair of holding portions held by the first holding control portion in a direction perpendicular to the mounting surface of the mounting portion. At this time, the belt loop substrate is flexed based on the positional relationship between the mounting surface and both end portions. The feeding device is capable of controlling the direction in which the tab sheet is flexed.

In the feeding device according to claim 4, the position of the mounting surface is above the positions of the lower surfaces of the two end portions sandwiched between the pair of sandwiching portions in the direction perpendicular to the mounting surface of the mounting portion. In this case, the position of the mounting surface is closer to the pressing portion side than the positions of both end portions of the strap piece sandwiched between the pair of sandwiching portions in the direction perpendicular to the mounting surface. At this time, the tab is deflected upward from the mounting surface. The feeding means can make the direction in which the tab is flexed constant.

The supply device according to claim 5 or 6 further comprises: a second holding drive portion that can move the pair of holding portions in the width direction of the belt loop sheet; a pressing control portion that causes the pressing portion to move upward away from the placing portion after the first clamping control portion vertically clamps the both end portions of the strap piece with the first member and the second member by the first clamping driving portion; a second holding control portion that moves the pair of holding portions in the width direction of the tab by the second holding drive portion to separate the tab from the placement portion after the pressing portion is separated from the placement portion under the control of the pressing control portion; and a third holding control portion that moves the pair of holding portions in the width direction of the tab sheet by the second holding drive portion to supply the tab sheet to the sewing device after the second holding control portion separates the tab sheet from the placing portion by the second holding drive portion; when the pair of holding portions supply the belt loop sheet to the sewing device under the control of the third holding control portion, the spacing control portion moves the pair of holding portions in a direction to approach each other by the spacing changing portion. After the pressing portion is away from the placing portion, the feeding device narrows the interval between the pair of gripping portions in the longitudinal direction of the belt loop sheet. At this time, the tab flexes in the lengthwise direction. The feeding device is easier to bend the belt loop sheet in the longitudinal direction than when the distance between the pair of clamping portions in the longitudinal direction of the belt loop sheet is reduced in a state where the pressing portion is not away from the placement portion. The supply device can reliably supply the belt loop sheet which is bent in the length direction to the sewing device.

Drawings

Fig. 1 is a plan view of the sewing system 1 with the support portion 51 in the supply position and the support table 54 in the extended position.

Fig. 2 is a front view of the first device 10 of the tab feeding device 2.

Fig. 3 is an enlarged front view of a portion near the placement portion 11 in fig. 2.

Fig. 4 is a right side view of the first device 10 with the knife 19 in the standby position.

Fig. 5 is a right side view of a partial structure of the first device 10 when the pressing portion 12 is at the standby position.

Fig. 6 is a front view of the second device 40 and the sewing machine 3 in the state of fig. 1.

Fig. 7 is a plan view of the first device 10 and the second device 40 when the support portion 51 is located at the clamping position and the support table 54 is located at the standby position.

Fig. 8 is a block diagram of the sewing system 1.

Fig. 9 is a flowchart of the sewing control process.

Fig. 10 is a right side view of the second device 40 in the state of fig. 7.

Fig. 11 is a diagram schematically showing the positional relationship among the placement portion 11, the tab 8, and the pressing portion 12 when the pressing portion 12 presses the tab 8.

Fig. 12 is a plan view of the first device 10 and the second device 40 when the support portion 51 is located at the clamping position and the support table 54 is moved to the extended position.

Fig. 13 is a diagram schematically showing the positional relationship between the placement portion 11, the tab 8, the pressing portion 12, and the tip portions of the pair of nipping portions 41, 46 when the pair of nipping portions 41, 46 move to positions corresponding to both end portions 86, 87 in the longitudinal direction 89 of the tab 8.

Fig. 14 is a view schematically showing the positional relationship between the placement portion 11, the tab 8, the pressing portion 12, and the tip portions of the pair of gripping portions 41, 46 when both end portions 86, 87 in the longitudinal direction 89 of the tab 8 are gripped from above and below by the pair of gripping portions 41, 46.

Fig. 15 is a diagram schematically showing the positional relationship between the tab 8 and the tip end portions of the pair of holding portions 41, 46 when the tab 8 is held between the pair of holding portions 41, 46 and the pair of holding portions 41, 46 is separated from the placement portion 11.

Fig. 16 is a plan view of the first device 10 and the second device 40 when the tab sheet 8 is held between the pair of holding portions 41 and 46 and the support table 54 moves to the standby position.

Fig. 17 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 table 54 is located at the standby position.

Fig. 18 is a left side view schematically showing the tab 8, the tip ends of the pair of nip portions 41, 46, and the presser foot 82 when the pair of nip portions 41, 46 is moved above the cloth 9 and the needle plate 77.

Fig. 19 is a left side view schematically showing the tab sheet 8, the tip ends of the pair of grip portions 41, 46, and the presser foot 82 when the interval between the pair of grip portions 41, 46 is narrowed.

Fig. 20 is a left side view schematically showing the belt loop sheet 8, the tip ends of the pair of nip portions 41, 46, and the presser foot 82 when the presser foot 82 presses the belt loop sheet 8.

Fig. 21 is a left side view schematically showing the tab sheet 8, the tip ends of the pair of grip portions 41, 46, and the presser foot 82 when the first members 42, 47 of the pair of grip portions 41, 46 are separated from the second members 43, 48 of the pair of grip portions 41, 46.

Fig. 22 is a left side view schematically showing the tab 8, the tip ends of the pair of grip portions 41, 46, and the presser foot 82 when the pair of grip portions 41, 46 are moved to the outer sides in the longitudinal direction 88 of the tab 8, respectively.

Fig. 23 is a left side view schematically showing the tab sheet 8 and the presser foot 82 when the sewing machine 3 sews the tab sheet 8 to the cloth 9.

Detailed Description

An embodiment of the present invention is explained with reference to the drawings. The configurations of the sewing system 1, the tab feeding device 2, and the sewing machine 3 are explained with reference to fig. 1 to 3. In the following description, the upper and lower sides, the left and right sides, and the front and rear sides shown by arrows in the drawings are used.

The sewing system 1 includes a tab sheet supply device 2 and a sewing machine 3. The tab sheet supply device 2 cuts the continuous belt-like member to produce a tab sheet (belt-like member) 8. The tab sheet supply device 2 supplies a tab sheet 8 to the sewing machine 3. The sewing machine 3 sews both longitudinal end portions of the tab 8 supplied from the tab supply device 2 to the cloth 9. The tab sheet supply device 2 is disposed adjacent to the sewing machine 3. For example, the tab supply device 2 supplies a tab for passing a string-like member to a sewing object (cloth or leather).

The tab sheet feeding device 2 includes a first device 10, a second device 40, and a driving portion 66. In a plan view, the longitudinal direction (left-right direction) of the first device 10 is substantially perpendicular to the longitudinal direction (front-back direction) of the sewing machine 3. The first device 10 makes a tab sheet 8 of a prescribed length from a continuous strip-like member. The continuous belt-like member is a continuous belt-like member made of, for example, cloth or leather.

The first apparatus 10 mainly includes a supply unit 15, a cutting unit 18, a placement unit 11, a pressing unit 12, a driving unit 21, and driving units 23 to 27 (see fig. 8). The supply unit 15 holds the continuous belt-shaped member, draws the continuous belt-shaped member by a predetermined length, and supplies the continuous belt-shaped member to the mounting unit 11. The supply unit 15 includes a holding unit 16 and a drawing unit 17. The holding portion 16 holds the continuous belt-like member. The drawing unit 17 receives power from the driving unit 23 and moves from the standby position shown in fig. 2 to the grip position. The standby position is a position where the drawing unit 17 is located on the left side of the mounting unit 11. The grasping position is a position where the pulling-out portion 17 is located when one end portion of the continuous belt-like member held by the holding portion 16 is disposed above the grasping member 172 of the pulling-out portion 17. Specifically, the grasping position is a position where the drawing portion 17 is located when the stopper 29 abuts against the main body of the driving portion 23. The stopper 29 is fixed to the arm portion of the driving portion 23.

The drawing portion 17 has gripping members 171 and 172 at the right end portion. The gripper members 171, 172 extend in the longitudinal direction of the continuous belt-like member. The grasping member 171 is located above the grasping member 172. The pulling portion 17 receives power from the driving portion 24 (see fig. 8) and moves the grasping member 171 toward the grasping member 172. The drawing portion 17 vertically sandwiches and grips one end (left end) of the continuous belt-like member held by the holding portion 16 with the gripping members 171 and 172. The pulling-out portion 17 receives power from the driving portion 23, pulls out a continuous belt-like member of a predetermined length from the holding portion 16, and supplies the continuous belt-like member to the mounting portion 11. Then, the drawing unit 17 receives power from the driving unit 25 and moves to the standby position. The driving portions 23 to 25 are air cylinders. The longitudinal direction of the continuous belt-like member is the direction in which the pulling-out portion 17 pulls out the continuous belt-like member. In the present embodiment, the longitudinal direction of the continuous belt-like member coincides with the longitudinal direction of the continuous belt-like member. The width direction of the continuous belt-shaped member is orthogonal to the longitudinal direction of the continuous belt-shaped member in a plan view. The longitudinal direction and the width direction of the continuous belt-like member coincide with the longitudinal direction and the width direction of the tab sheet 8, respectively.

The cutting section 18 cuts the continuous belt-like member supplied from the supply section 15 to the mounting section 11 to produce the belt loop sheet 8. The cutting portion 18 is located between the holding portion 16 and the placement portion 11 in the left-right direction. The cutting section 18 includes a knife 19 and an anvil 20. The knife 19 is located above the feed path of the continuous belt-like member. The anvil 20 is located below the knife 19, and a feeding path of the continuous band-shaped member is partitioned between the knife 19 and the anvil 20. The knife 19 has a blade portion at a portion (lower end) on the anvil 20 side. The blade portion extends substantially parallel to the width direction of the continuous band-shaped member (in the front-rear direction). As shown in fig. 4, the knife 19 is connected to the lower end of the driving portion 26. The driving unit 26 is an air cylinder and moves the knife 19 in the vertical direction. When the driving unit 26 moves the knife 19 downward from the position shown in fig. 4, the knife 19 moves from the standby position to the cutting position. The cutting position is a position where the knife 19 is located when the blade portion of the knife 19 and the anvil 20 contact the continuous belt-shaped member. The standby position is a position where the knife 19 is located above the cutting position. The knife 19 is in the standby position in the state shown in fig. 4. The anvil 20 receives the knife 19 which is moved to the cutting position. The driving portion 27 is located below the anvil 20. The driving portion 27 is a cylinder. The anvil 20 can be moved in the up-down direction by receiving power from the driving portion 27. When the driving unit 26 moves the knife 19 downward from the position shown in fig. 4, the anvil 20 receives power from the driving unit 27 and moves upward. The knife 19 moves across the feed path of the continuous belt-like member, thereby cutting the continuous belt-like member on the feed path.

The mounting portion 11 is a plate member having a rectangular shape in a plan view. The mounting portion 11 has a mounting surface 111 on the upper surface thereof on which the central portion in the longitudinal direction of the tab 8 can be mounted (see fig. 11). The mounting surface 111 is a surface of the mounting portion 11 that faces the pressing portion 12. The mounting surface 111 is an upper surface of the mounting portion 11. The mounting surface 111 is planar and extends in the horizontal direction. The length of the placement portion 11 in the left-right direction is smaller than the length of the belt loop sheet 8 in the longitudinal direction. The mounting surface 111 does not contact both ends of the tab sheet 8 in the longitudinal direction. The continuous belt-like member supplied from the drawing unit 17 is placed on the placement surface 111. When the driving unit 26 moves the knife 19 downward from the position shown in fig. 4, the anvil 20 receives power from the driving unit 27 and moves upward. The length of the placement portion 11 in the front-rear direction is greater than the length of the belt loop sheet 8 in the width direction.

As shown in fig. 5, the pressing portion 12 has a substantially rectangular parallelepiped shape extending in the front-rear direction. The upper surface of the pressing portion 12 is inclined downward from the front end portion of the substantially central portion in the front-rear direction. The front end of the pressing part 12 is located at a standby position that is away from the placing part 11 upward. The rear end of the pressing portion 12 is connected to the shaft 122. The driving portion 21 is located above the pressing portion 12. The driving portion 21 is connected to the pressing portion 12 between the front end of the pressing portion 12 and the shaft 122. The driving section 21 drives the pressing section 12 to swing up and down about the shaft 122 as a fulcrum. The pressing portion 12 receives power from the driving portion 21 and moves from the standby position shown in fig. 5 to the pressing position shown in fig. 3. The pressing position is closer to the mounting portion 11 than the standby position. When the pressing portion 12 is at the pressing position, the continuous belt-like member (belt loop sheet 8) placed on the placing portion 11 is pressed from above. The length in the left-right direction of the pressing portion 12 is smaller than the length in the length direction of the belt loop sheet 8. The pressing portion 12 is disposed at the center of the placement portion 11 in the lateral direction. The driving portion 21 is a cylinder.

The second means 40 cooperates with the first means 10 to make the tab 8. The second device 40 supplies the manufactured belt loop sheet 8 to the sewing machine 3. As shown in fig. 6 and 7, the second device 40 mainly includes a support portion 51, a shaft 52, a shaft 53, a support table 54, a guide portion 55, a coupling portion 56, driving portions 61 to 65, and a pair of gripping portions 41 and 46. In the following description, a side of the second device 40 in the longitudinal direction closer to the pair of clamping portions 41 and 46 is referred to as one end side of the second device 40, and a side of the second device 40 in the longitudinal direction closer to the shaft 52 is referred to as the other end side of the second device 40. One end side of the second device 40 is one end side of each component of the second device 40. The other end side of the second device 40 is the other end side of each component of the second device 40.

The pair of holding portions 41, 46 hold both end portions 86, 87 in the longitudinal direction 89 of the tab 8 pressed by the pressing portion 12, respectively. The pair of holding portions 41 and 46 hold both end portions 86 and 87 of the belt loop sheet 8 from above and below.

As shown in fig. 6 and 10, a clamping portion 41 of the pair of clamping portions includes a first member 42, a second member 43, a spring 44, and a shaft 45, and a clamping portion 46 of the pair of clamping portions includes a first member 47, a second member 48, a spring 49, and a shaft 50. The first member 42, the first member 47, the second member 43, and the second member 48 are rod-shaped members, and extend parallel to the width direction of the tab 8. The first member 42 and the second member 43 are arranged up and down with the first member 42 provided on the upper side of the second member 43, and the first member 47 and the second member 48 are arranged up and down with the first member 47 provided on the upper side of the second member 48. The first member 42 is swingable about the shaft 45, and the first member 47 is swingable about the shaft 50. The shaft 45 rotatably connects the rear end portions of the first and second members 42 and 43, and the shaft 50 rotatably connects the rear end portions of the first and second members 47 and 48, respectively. The spring 44 biases the first member 42 in a direction away from the second member 43, and the spring 49 biases the first member 47 in a direction away from the second member 48. The first member 42 receives power from the driving portion 61 and moves to the second member 43 side (downward), and the first member 47 receives power from the driving portion 62 and moves to the second member 48 side (downward). The driving portions 61 and 62 are air cylinders. The driving portion 61 is provided above the first member 42, and the driving portion 62 is provided above the first member 47. The clamping portion 41 is arranged parallel to the clamping portion 46. The grip portion 41 and the grip portion 46 are disposed at positions spaced apart in the longitudinal direction of the tab 8. The driving unit 63 is an air chuck and is fixed to the support base 54. The driving portion 63 is provided with a pair of guide portions 67 on the upper surface. The pair of guide portions 67 are coupled to be able to approach or separate from each other. The pair of guides 67 fix the rear end portion of the second member 43 and the rear end portion of the second member 48, respectively. When the driving portion 63 is driven, the pair of guide portions 67 approach or separate from each other. The interval between the gripping portion 41 and the gripping portion 46 in the horizontal plane can be changed to the gripping position shown in fig. 1 and the distant position shown in fig. 7. The driving section 63 equally moves the pair of gripping sections 41 and 46 in parallel to change the distance between the pair of gripping sections 41 and 46.

The support portion 51 is a rectangular plate-shaped member. The support portion 51 supports the pair of clamping portions 41 and 46 via the support base 54 and the guide portion 55. The shaft 53 is in the shape of a round bar and extends in the vertical direction. One end (upper end) of the shaft 53 is connected to a substantially central portion of the support portion 51 in the longitudinal direction. The other end (lower end) of the shaft 53 is fixed to the table 5 by a screw 57. The shaft 53 supports the support portion 51 in a manner that the support portion 51 can swing. Coupling portion 56 is coupled to the lower surface of one end side of support portion 51. Support portion 51 is connected to drive portion 66 via connection portion 56. The support portion 51 can receive power from the driving portion 66 to swing between the supply position shown in fig. 1 and the clamping position shown in fig. 7 with the shaft 53 as a fulcrum. The supply position is a position where the support portion 51 is located when 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 at the supply position, the pair of clamp portions 41 and 46 face the sewing machine 3. The clamping position is a position where the support portion 51 is located when 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 portion 51 is in the clamping position, the pair of clamping portions 41 and 46 face the first device 10. At this time, the pair of guide portions 67 are positioned on the left and right, respectively. The driving unit 63 guides the pair of guide portions 67 so that the pair of guide portions 67 can move in the right and left directions, respectively.

The support base 54 supports the lower surfaces of the pair of gripping portions 41 and 46 on the other end side. The guide portion 55 has a linear rail shape extending from one end side to the other end side. The guide portion 55 supports the support base 54 so that the support base 54 can move. The support base 54 receives power from the driving unit 64 and moves along the guide unit 55 between a standby position shown in fig. 17 and 7 and an extended position shown in fig. 1 and 12. The driving portion 64 is a cylinder. The standby position is a position where the support base 54 is located when the arm portion of the driving portion 64 is retracted to the other end side. The extended position is a position at which the support table 54 is located when the arm portion of the drive portion 64 is projected to one end side. When the support base 54 moves, the pair of gripping portions 41 and 46 also move together with the support base 54. The shaft 52 is provided above the other end of the support portion 51. The support portion 51 can be swung about the shaft 52 as a fulcrum by receiving power from the drive portion 65. The driving unit 65 changes the vertical position of the pair of gripping portions 41 and 46 by swinging the support portion 51 about the shaft 52 as a fulcrum.

The sewing machine 3 is an industrial sewing machine having a known structure. As shown in fig. 1 and 6, the sewing machine 3 includes a bed portion 71, a column portion 72, a arm portion 73, and a tip portion 74. The chassis portion 71 extends in the front-rear direction. The bed portion 71 is provided with a needle plate 77, a presser foot drive mechanism 81 (see fig. 8), and a presser foot 82 at an upper portion. Needle plate 77 has needle receiving holes 78. The presser foot drive mechanism 81 is provided in front of the column portion 72. The presser drive mechanism 81 receives power from the drive unit 97 (see fig. 8) to move the presser 82 in the vertical, horizontal, and front-rear directions. The presser foot 82 presses the belt loop sheet 8 located above the needle plate 77 from the upper side. The presser foot 82 has a tip end side (left end side) that is divided into front and rear tip portions 821, 822. The distal ends 821 and 822 extend in the left-right direction. The presser 82 presses the inner side of the belt loop sheet 8 with the tip portions 821 and 822 than both ends in the longitudinal direction.

The housing portion 71 includes therein a shuttle mechanism, a conveying mechanism, a thread cutting mechanism 80 (see fig. 8), and the like. The shuttle mechanism rotates a rotary shuttle accommodating the bobbin thread. The conveying mechanism conveys the cloth 9 in the left-right direction and the front-rear direction. The feed mechanism moves the cloth 9 in the left-right direction and the front-back direction together with the presser foot drive mechanism 81. The pillar portion 72 extends upward from the rear end portion of the base portion 71. The column part 72 has a sewing machine motor 98 and the like inside. The arm portion 73 extends forward from the upper end portion of the column portion 72. The arm portion 73 is opposed to the upper surface of the base portion 71. The arm portion 73 has a main shaft 79 and the like therein. The rear end of the main shaft 79 is connected to a sewing machine motor 98. The sewing machine motor 98 rotates the main shaft 79. The tip portion 74 is provided at the tip of the arm portion 73, and a needle bar up-and-down movement mechanism, a thread take-up lever drive mechanism, and the like are provided inside.

The main shaft 79 transmits a rotational force generated in accordance with the driving of the sewing machine motor 98 to the needle bar up-down movement mechanism and the thread take-up lever driving mechanism, thereby driving the needle bar up-down movement mechanism and the thread take-up lever driving mechanism. The needle bar up-down movement mechanism moves the needle bar 75 up and down. The needle bar 75 extends downward. The lower end of the needle bar 75 is exposed from the lower side of the distal end 74. The needle bar 75 can be fitted with a needle 76 at the lower end. When the needle bar 75 is lowered to the lowermost position, the lower end of the needle 76 reaches the rotary hook through a needle receiving hole 78 provided in the needle plate 77. The rotary hook cooperates with the needle bar 75 to interlace the ground thread on the upper thread held by the needle 76. The thread take-up lever driving mechanism raises the face thread interwoven on the ground thread above the needle plate 77. The sewing machine 3 forms stitches on the cloth 9.

An electrical structure of the sewing system 1 is explained with reference to fig. 8. The control section 4 of the sewing system 1 synchronously controls the belt loop sheet supply device 2 and the sewing machine 3. The control section 4 includes a CPU101, a ROM102, a RAM103, a signal line 104, an input/output interface (I/F)105, and an external communication I/F106. The CPU101, ROM102, and RAM103 are electrically connected to an input/output I/F105 via a signal line 104. The external communication I/F106 is electrically connected to the input/output I/F105. The CPU101 controls the tab supply device 2 and the sewing machine 3, and executes various operations and processes related to the production and sewing of the tab 8 in accordance with various programs stored in the ROM 102. The ROM102 stores various programs, various initial setting parameters, and the like. The RAM103 temporarily stores setting values, operation results of the CPU101, and the like. The external communication I/F106 is responsible for communication with external devices. The CPU101 communicates with the tab supply device 2 and the sewing machine 3 via the external communication I/F106 and the input/output I/F105.

The tab sheet supply device 2 includes a CPU31, a ROM32, a RAM33, a signal line 34, an input/output I/F35, an external communication I/F36, a drive section 21, drive sections 23 to 27, and drive sections 61 to 66. The CPU31, ROM32, and RAM33 are electrically connected to the input/output I/F35 via a signal line 34. The external communication I/F36, the driver 21, the drivers 23 to 27, and the drivers 61 to 66 are electrically connected to the input/output I/F35. The CPU31 controls the tab supply device 2 in accordance with instructions from the control unit 4, and executes various calculations and processes related to the production and supply of the tab 8. The ROM32 stores various programs, various initial setting parameters, and the like. The RAM33 temporarily stores setting values, operation results of the CPU31, and the like. The external communication I/F36 is responsible for communication with external devices. The CPU31 communicates with the control unit 4 via the external communication I/F36 and the input/output I/F35.

The driving portion 21 is a driving source of the pressing portion 12. The driving unit 21 swings the pressing unit 12 upward or downward in accordance with the instruction of the CPU 31. The driving units 23 to 25 are driving sources of the drawing unit 17. The driving unit 23 pulls the continuous belt-like member onto the mounting surface 111 of the mounting unit 11 by the pulling unit 17 in accordance with an instruction from the CPU 31. The drive unit 24 grips the continuous belt-like member by the pulling unit 17 in accordance with an instruction from the CPU 31. The driving unit 25 moves the drawing unit 17 in the left direction according to the instruction of the CPU 31. The driving unit 26 is a driving source of the knife 19. The driving unit 26 moves the knife 19 upward or downward according to an instruction from the CPU 31. The driving section 27 is a driving source of the anvil 20. The driving unit 27 moves the anvil 20 upward or downward according to the instruction of the CPU 31.

The driving portion 61 is a driving source of the first member 42 of the clamping portion 41. The driving unit 61 moves the first member 42 downward in accordance with an instruction from the CPU 31. The driving portion 62 is a driving source of the first member 47 of the clamping portion 46. The driving unit 62 moves the first member 47 downward in accordance with an instruction from the CPU 31. The driving unit 63 is a driving source for changing the interval between the gripping unit 41 and the gripping unit 46. The driving unit 63 moves the gripping unit 41 and the gripping unit 46 in a direction to approach each other or in a direction to separate from each other in accordance with an instruction from the CPU 31. The driving portion 64 is a driving source when moving the pair of gripping portions 41 and 46 in the width direction of the tab sheet 8. The driving unit 64 moves the pair of gripping portions 41 and 46 to one end side or the other end side of the second device 40 in accordance with an instruction from the CPU 31. The driving unit 65 is a driving source for adjusting the vertical position of the pair of gripping portions 41 and 46. The driving unit 65 swings the pair of gripping portions 41 and 46 upward or downward in accordance with an instruction from the CPU 31. The driving unit 66 is a driving source for swinging the second device 40 (the support unit 51) in a plan view. The driving unit 66 swings the second device 40 in accordance with an instruction from the CPU 31.

The sewing machine 3 includes a CPU91, a ROM92, a RAM93, a signal line 94, an input/output I/F95, an external communication I/F96, a drive section 97, a drive section 99, and a sewing machine motor 98. The CPU91, ROM92, and RAM93 are electrically connected to the input/output I/F95 via a signal line 94. The external communication I/F96, the drive unit 97, the drive unit 99, and the sewing machine motor 98 are electrically connected to the input/output I/F95. The CPU91 controls the sewing machine 3 in accordance with instructions from the control unit 4, and executes various calculations and processes related to the placement and sewing of the tab 8. The ROM92 stores various programs, various initial setting parameters, and the like. The RAM93 temporarily stores setting values, operation results of the CPU91, and the like. The external communication I/F96 is responsible for communication with external devices. The CPU91 communicates with the control unit 4 via the external communication I/F96 and the input/output I/F95. The driving section 97 is a driving source of the presser foot driving mechanism 81. The drive unit 97 moves the presser foot 82 up and down, right and left, and forward and backward by the presser foot drive mechanism 81 according to the instruction of the CPU 91. The sewing machine motor 98 is a driving source of the main shaft 79. The sewing machine motor 98 rotates the main shaft 79 as instructed by the CPU 91. The driving unit 99 is a driving source of the thread cutting mechanism 80. The drive unit 99 drives the thread cutting mechanism 80 according to an instruction from the CPU91 to cut the upper thread and the lower thread.

The sewing control process executed by the CPU101 of the control section 4, the CPU31 of the tab supply device 2, and the CPU91 of the sewing machine 3 in cooperation will be described with reference to fig. 9. The operator turns on the power supply of the sewing system 1 and operates the operation section to input a start instruction. At this time, the CPU101 reads a program of the sewing control process from the ROM102, and executes the process in accordance with an instruction included in the program. At the start of the process, tab feeding device 2 is in the state in fig. 7. The support portion 51 is in the clamped position. The pair of gripping portions 41, 46 are at distant positions. The support table 54 is in the standby position. The pressing portion 12, the pulling portion 17, and the knife 19 are each in a standby position, but not shown in the figure. The grasping members 171, 172 of the pulling-out portion 17 are spaced apart from each other.

The CPU101 outputs an instruction to the tab supply device 2 to execute a process of supplying the continuous band-shaped member to the placement portion 11. The CPU31 receives an instruction from the CPU101, and sequentially executes subsequent processes in accordance with the instruction. The CPU31 controls the driving unit 23 and the driving unit 24 to pull the continuous belt-like member by a predetermined length and supply the continuous belt-like member to the mounting unit 11 (S1). Specifically, the CPU31 drives the driving unit 23 to move the drawing unit 17 of the supply unit 15 from the standby position to the pickup position. The CPU31 drives the driving unit 24 to move the grasping member 171 toward the grasping member 172. The grasping members 171 and 172 grasp one end portion of the continuous belt-like member from above and below. The CPU31 drives the driving unit 23 to move the drawing unit 17 from the grasping position to the cutting position. The cutting position is between the standby position and the grasping position. The drawing portion 17 is located leftward of the placing portion 11 when located at the cutting position.

The CPU31 drives the driving unit 21 to move the pressing unit 12 from the standby position to the pressing position (S2). The pressing portion 12 presses the continuous belt-like member from the upper side. The CPU31 controls the driving units 26 and 27 to move the knife 19 and the anvil 20 from the standby position shown in fig. 2 and 4 to the cutting position, thereby cutting the continuous belt-shaped member (S3). Then, the CPU31 controls the driving units 26 and 27 to move the knife 19 and the anvil 20 from the cutting position to the standby position. The CPU31 controls the driving section 24 to move the grasping member 171 away from the grasping member 172. The CPU31 controls the driving unit 25 to move the drawing unit 17 from the cutting position to the standby position.

As shown in fig. 11, tab supply device 2 places tab 8 of a predetermined length on placement surface 111 of placement portion 11 through the processes of S1 to S3. Both end portions 86, 87 in the longitudinal direction 89 of the belt loop sheet 8 do not contact the placement portion 11. The two end portions 86, 87 are located outside the left and right ends of the mounting portion 11. The center C in the longitudinal direction 89 of the belt loop sheet 8 coincides with the center C in the left-right direction of the placement portion 11. The CPU31 controls the driving section 64 to move the pair of gripping sections 41, 46 in the width direction of the tab 8 (S4). More specifically, the CPU31 controls the driving unit 64 to move the support base 54 from the standby position of fig. 7 to the extended position of fig. 12. At this time, as shown in fig. 13, the tips of the pair of sandwiching portions 41, 46 are positioned outside the placing portion 11 in the longitudinal direction 89 of the tab sheet 8 and inside both ends of the tab sheet 8. The distal ends of the first members 42 and 47 are located above the upper surface of the mounting portion 11 in a direction (vertical direction) perpendicular to the mounting surface 111 of the mounting portion 11. The distal ends of the second members 43 and 48 are located below the lower surface of the mounting portion 11 in the direction perpendicular to the mounting surface 111.

The CPU31 controls the driving portions 61, 62 to vertically sandwich both end portions 86, 87 in the longitudinal direction 89 of the tab sheet 8 with the pair of sandwiching portions 41, 46 (S5). Specifically, the first member 42 of the clamp portion 41 of the pair of clamp portions receives power from the driving portion 61 and moves toward the second member 43, and the first member 47 of the clamp portion 46 of the pair of clamp portions receives power from the driving portion 62 and moves toward the second member 48. As shown in fig. 14, the pair of holding portions 41, 46 hold both end portions 86, 87 of the belt tab 8 from above and below with the respective first members 42, 47 and second members 43, 48. In the process of S5, the positions of both end portions 86, 87 of the tab sheet 8 and the position of the mounting portion 11 held between the pair of holding portions 41, 46 are different in the direction perpendicular to the mounting surface 111 of the mounting portion 11. The position of the placement surface 111 is vertically above the positions of the lower surfaces of both end portions 86, 87 of the tab sheet 8 sandwiched by the pair of sandwiching portions 41, 46. The plane D1 including the placement surface 111 is above the plane D2 including the upper surfaces of the second members 43, 48.

The CPU31 drives the driving unit 21 to move the pressing unit 12 away from the placing unit 11 (S6). Specifically, the CPU31 drives the driving unit 21 to move the pressing unit 12 from the pressing position shown in fig. 14 to the standby position shown in fig. 5. The CPU31 drives the driving section 64 to move the pair of gripping sections 41, 46 in the width direction of the tab 8 (S7). Specifically, the CPU31 drives the driving unit 64 to move the support base 54 from the extended position shown in fig. 12 to the standby position shown in fig. 16. As shown in fig. 16, the pair of holding portions 41 and 46 move forward while holding both end portions 86 and 87 of the tab sheet 8, respectively. As shown in fig. 15, the tab piece 8 moves forward in parallel with the pair of gripping portions 41 and 46, and is separated from the placement portion 11. The tab sheet 8 flexes upward. CPU31 drives driving unit 66 to swing support unit 51 to the supply position (S8). More specifically, CPU31 drives driving unit 66 to swing support unit 51 from the clamping position shown in fig. 16 to the supply position shown in fig. 17. In a plan view, the longitudinal direction of the second device 40 is orthogonal to the longitudinal direction (front-back direction) of the sewing machine 3. The CPU31 drives the driving unit 64 to move the pair of grippers 41, 46 upward of the needle plate 77 (S9). The cloth 9 is disposed on the upper surface of the needle plate 77. More specifically, the CPU31 drives the driving unit 64 to move the support base 54 from the standby position shown in fig. 17 to the extended position shown in fig. 1. As shown in fig. 18, the pair of gripping portions 41, 46 maintain the upward deflection of the tab sheet 8. The CPU31 drives the driving unit 63 to move the pair of gripping portions 41 and 46 in a direction to approach each other. That is, the CPU31 reduces the interval between the pair of nip portions 41 and 46 by the driving portion 63 (S10). The interval between the pair of nip portions 41 and 46 after the processing at S10 is a predetermined interval in consideration of the length of the tab 8 in the longitudinal direction 88, the length of the tab 8 in the width direction, the thickness of the tab 8, the shape of the presser foot 82, the size of the presser foot 82, and the like. As shown in fig. 19, the degree to which tab 8 after the process of S10 flexes upward is greater than the degree to which tab 8 before the process of S10 shown in fig. 18 flexes upward. The CPU31 drives the driving unit 65 to move the pair of gripping portions 41 and 46 downward (S11). The lower surfaces of the pair of nip portions 41 and 46 on the tip end side contact the upper surface of the fabric 9. The tab feeding device 2 feeds the tab sheet 8 to the sewing machine 3. The tab sheet 8 maintains the upward deflection. The CPU31 outputs an instruction to the control section 4 to indicate that the processing at S11 is ended.

The CPU101 of the control section 4 receives an instruction from the tab sheet supply device 2 and outputs an instruction to lower the presser foot 82 to the sewing machine 3. The CPU91 of the sewing machine 3 receives the instruction output from the control unit 4. The CPU91 drives the driving unit 97 to move the presser foot 82 downward (S12). As shown in fig. 20, the presser foot 82 moves from the standby position to the sewing position. The standby position is a position where the presser foot 82 is located when being away from above the tab sheet 8 located above the cloth 9. The sewing position is a position where the presser foot 82 is located when pressing the belt loop sheet 8 from above. The tip portions 821, 822 of the presser foot 82 are both located between the pair of clamp portions 41, 46. The presser foot 82 maintains upward deflection of the tab 8 between the tip portions 821, 822. The amount of flexure of the tab sheet 8 depends on the length of the tab sheet 8 in the longitudinal direction 88, the position where the pair of sandwiching portions 41, 46 sandwich the tab sheet 8 in the longitudinal direction of the tab sheet 8, the interval between the pair of sandwiching portions 41, 46 after the process of S10, the interval between the tip portions 821, 822, and the like. The CPU91 of the sewing machine 3 outputs an instruction to the control unit 4 to end the processing of S12. The CPU101 of the control section 4 receives the instruction output from the sewing machine 3, and outputs an instruction to the tab supply device 2 to execute a process of releasing the tab 8 from the pair of gripping sections 41 and 46.

The CPU31 of the tab feeding device 2 receives the instruction output by the control section 4. The CPU31 stops the driving of the driving portions 61, 62, and releases the grip of the pair of grip portions 41, 46 on the tab 8 (S13). As shown in fig. 21, when the driving of the driving portions 61, 62 is stopped, the first members 42, 47 are separated from the second members 43, 48 by the urging forces of the springs 44, 49, respectively.

The CPU31 moves the pair of gripping portions 41 and 46 outward in the longitudinal direction 88 of the tab 8 (S14). Specifically, the CPU31 moves the pair of gripping portions 41 and 46 in the direction away from each other in the longitudinal direction 88 of the tab sheet 8. As shown in fig. 22, presser foot 82 presses tab 8 while maintaining the flexure of tab 8 between tip portions 821, 822.

The CPU31 drives the driving section 64 to move the pair of gripping sections 41, 46 in the width direction of the tab 8 (S15). Specifically, the CPU31 drives the driving unit 64 to move the support base 54 from the extended position to the standby position. The CPU31 outputs an instruction to the control section 4 to indicate that the processing at S15 is ended. The CPU101 of the control section 4 receives the instruction output from the tab sheet feeding device 2. The CPU101 outputs an instruction to the sewing machine 3 to execute processing of sewing both end portions 86, 87 of the loop sheet 8 to the cloth 9, respectively.

The CPU91 of the sewing machine 3 receives the instruction output from the control unit 4. CPU91 drives driving unit 97 and sewing machine motor 98 to sew both ends 86, 87 of tab sheet 8 to fabric 9, respectively (S16). When the process of sewing the belt loop sheet 8 is finished, the CPU91 drives the driving section 99 to cut the upper thread and the lower thread (S16). As shown in fig. 23, the sewing machine 3 forms stitches 151, 152 shown by broken lines at both end portions 86, 87 of the belt loop sheet 8. Stitches 151 and 152 are outside tip portions 821 and 822 of presser foot 82 in the longitudinal direction 88 of tab 8. The CPU91 drives the driving unit 97 to move the presser foot 82 away from the cloth 9 (needle plate 77). The tab 8 between stitches 151, 152 maintains the upward deflection. The center of flexure C coincides with the center C in the length direction 88 of tab 8. The CPU91 of the sewing machine 3 outputs an instruction to the control unit 4 to end the processing of S16. CPU31 of tab feeding device 2 drives driving portion 66 to swing supporting portion 51 from the feeding position to the nipping position (S17). The CPU31 outputs an instruction to the control section 4 to indicate that the processing at S17 is ended. The CPU101 of the control section 4 ends the sewing control process upon receiving instructions output from the sewing machine 3 and the tab feeding device 2, respectively.

The tab sheet feeding device 2 corresponds to the feeding device of the present invention. The sewing machine 3 corresponds to a sewing device of the present invention. The mounting portion 11 corresponds to the mounting portion of the present invention. The pressing portion 12 corresponds to the pressing portion of the present invention. The supply unit 15 corresponds to the supply unit of the present invention. The first members 42, 47 correspond to the first member of the present invention. The second members 43, 48 correspond to the second member of the present invention. The pair of clamping portions 41 and 46 corresponds to a pair of clamping portions of the present invention. The cutting unit 18, the driving unit 26, and the driving unit 27 correspond to the cutting unit of the present invention. The driving unit 63 corresponds to the interval changing unit of the present invention. The CPU31 that executes the process of S10 corresponds to the interval control section of the present invention. The driving portions 61 and 62 correspond to a first clamping driving portion of the present invention. The driving portion 64 corresponds to a second clamp driving portion of the present invention. The CPU31 that executes the process of S3 functions as the disconnection control unit of the present invention. The CPU31 executing the process of S5 functions as the first pinching control section of the present invention. The CPU31 executing the process of S6 functions as the pressing control unit of the present invention. The CPU31 executing the process of S7 functions as the second grip control unit of the present invention. The CPU31 that executes the process of S9 functions as the third pinching control section of the present invention.

The pair of gripping portions 41, 46 grip both end portions 86, 87 of the tab 8, respectively (S5), and after the pressing portion 12 is moved away from the placing portion 11(S6), the tab supply device 2 moves the pair of gripping portions 41, 46 in the direction to approach each other (S10). The interval between the pair of clamping portions 41 and 46 is reduced. As shown in fig. 19, the tab sheet 8 is flexed in the longitudinal direction 88 by the process of S10. The tab sheet supply device 2 supplies the tab sheet 8 flexed in the longitudinal direction to the sewing machine 3 (S11). When both end portions 86, 87 of the belt loop 8 flexed in the longitudinal direction 88 are sewn by the sewing machine 3, a gap is formed between the stitches 151, 152. A string-like member such as a waist belt can be passed through the gap. In comparison with the case where the sewing machine 3 finishes sewing both end portions of the tab sheet that do not flex in the longitudinal direction, in the case where the sewing machine 3 finishes sewing both end portions 86, 87 of the tab sheet 8 that flex in the longitudinal direction 88, the string-like member easily passes through between the tab sheet 8 and the cloth 9. Therefore, the tab sheet supply device 2 can supply the tab sheet 8, through which the string-like member is easily passed, to the sewing machine 3.

While the pressing part 12 presses the continuous belt-like member, the tab sheet feeding device 2 cuts the continuous belt-like member (S3). The tab sheet feeding device 2 can suppress the cut surface of the tab sheet from being skewed with respect to the width direction (front-back direction) of the continuous belt-like member. The tab sheet feeding device 2 can improve the finished product quality of the tab sheet. The position of the mounting surface 111 of the mounting portion 11 and the positions of the both end portions 86, 87 of the tab sheet 8 held by the pair of holding portions 41, 46 in the process of S5 are different in the direction (vertical direction) perpendicular to the mounting surface 111. At this time, tab 8 flexes based on the positional relationship between the placement surface 111 and both end portions 86, 87 of tab 8. The tab feeding device 2 can control the direction in which the tab sheet 8 is flexed. As shown in fig. 14 and 15, when the position of the placement surface 111 is located closer to the pressing portion 12 side than the positions of the both end portions 86, 87 of the tab 8 sandwiched between the pair of sandwiching portions 41, 46 in the vertical direction, the tab 8 bends toward the pressing portion 12 side. Tab supply device 2 can make the direction in which tab 8 is flexed constant.

After the pressing part 12 is separated from the placing part 11(S6), the pair of nipping parts 41, 46 are moved in the width direction (forward) of the tape tab 8 (S7). Compared to when the pair of clamping portions 41, 46 is moved in the width direction of the tab 8 with the pressing portion 12 pressing the tab 8, the tab feeding device 2 can smoothly separate the tab 8 from the placement portion 11. After the pressing portion 12 is separated from the placing portion 11(S6), the interval between the pair of sandwiching portions 41, 46 in the longitudinal direction 88 of the tab 8 is narrowed (S10). At this point, tab 8 flexes further in length direction 88. The tab supply device 2 easily bends the tab 8 in the longitudinal direction 88 compared to when the interval between the pair of clamping portions 41, 46 in the longitudinal direction 88 of the tab 8 is narrowed in a state where the pressing portion 12 presses the tab 8. The tab supply device 2 can reliably supply the tab 8 flexed in the longitudinal direction 88 to the sewing machine 3.

The tab supply device 2 performs the operation of holding the tab 8(S1 to S7) and the operation of supplying the tab 8 to the sewing machine 3 (S9 to S11, S13 to S15). The structure of holding the tab sheet 8 and the structure of supplying the tab sheet 8 to the sewing machine 3 need not conflict with each other. The support portion 51 of the tab sheet feeding device 2 can swing around the shaft 53. The tab feeding device 2 can simplify the structure and operation of the placement portion 11, the pressing portion 12, and the pair of nipping portions 41 and 46, compared to when the support portion 51 cannot be swung. When the support portion 51 is in the clamping position, the sewing machine 3 is relatively distant from the second device 40, as compared to when the support portion 51 is in the supply position. When the support portion 51 is at the clamping position, the operator can easily perform the work of replacing the cloth 9 on the sewing machine 3 and the work of disposing the cloth 9 at a desired position. The tab sheet supply device 2 can improve the operability of the work of the operator for arranging the cloth 9 on the sewing machine 3.

The present invention is not limited to the above embodiment, and various modifications can be made. The control section 4 may be provided in the sewing machine 3 or the tab sheet supply device 2. The CPU31 of the tab sheet supply device 2 can directly control the drive parts 97, 99 of the sewing machine 3 and the sewing machine motor 98.

The positions at which the pair of sandwiching portions 41, 46 sandwich both end portions 86, 87 of the belt loop sheet 8 can be changed as appropriate. The position of the placement portion 11 and the positions of the lower surfaces of the both end portions 86, 87 of the tab sheet 8 held by the pair of holding portions 41, 46 in the process of S5 may be the same in the direction (vertical direction) perpendicular to the placement surface 111 of the placement portion 11. As in the conventional sewing system, when the needle plate 77, the placing section 11, and the pair of nip sections 41 and 46 are arranged on the same straight line, the tab feeding device 2 may not have the support section 51, the shaft 53, and the driving section 66 as appropriate. At this time, the process of S8 may be omitted.

The process of S6 may be omitted in the case when pressing part 12 can move in the width direction of tab 8, or the like. The tab supply device 2 may not include the supply portion 15, the cutting portion 18, and the driving portions 23 to 27, for example, when directly supplying the tab 8 to the mounting portion 11. In this case, the processing from S1 to S3 may be omitted or changed. The driving portion 21, the driving portions 23 to 27, and the driving portions 61 to 66 of the tab sheet feeding device 2 may be changed to other drivers such as a motor as appropriate. The process of narrowing the interval between the pair of grip portions 41, 46 that grip both end portions 86, 87 of the tab sheet 8 (S10) may be performed in the period from after the process of S6 to before the process of S12.

The storage device of the sewing system 1 may store a program including instructions for the sewing system 1 to execute the sewing control process of fig. 9 before the sewing system 1 executes the program. The program acquisition method, the acquisition path, and the device storing the program may be changed as appropriate. The sewing system 1 may receive the program executed by the processor from another device through data line or wireless communication, and store the program in a storage device such as a flash memory. Other devices include, for example, a PC, a server connected through a network.

The steps of the sewing control process of fig. 9 are not limited to the example in which the CPUs 31 and 91 execute in accordance with the instruction of the CPU 101. A part or all of the sewing control process may be executed by an electronic device (for example, ASIC) other than the CPU. The sewing control process may be performed in a plurality of steps by a plurality of electronic devices (e.g., a plurality of CPUs). The steps of the sewing control processing of the above embodiment may be changed in order, omitted, or added as necessary. The scope of the present invention also includes a configuration in which a part or all of the actual processing is executed by an Operating System (OS) or the like operating on the sewing system 1 based on an instruction from a processor of the sewing system 1, and the functions of the above-described embodiments are realized by this processing.

Claims (6)

1. A feeding device for feeding a belt-like belt loop sheet (8) to a sewing device (3),

the supply device (2) comprises:

a mounting part (11) having a mounting surface (111) on which the central part of the belt loop piece in the longitudinal direction (89) can be mounted;

a pressing part (12) capable of pressing the belt loop sheet placed on the placing part from above;

a pair of clamping portions (41, 46) each having a first member (42, 47) and a second member (43, 48) which are rod-shaped members extending in a width direction orthogonal to a longitudinal direction of the tab piece; and

a space changing part (63) which can make the pair of clamping parts move towards the direction of approaching each other;

a length of the placement portion in a direction parallel to a longitudinal direction of the tab piece is smaller than a length of the tab piece;

the pair of holding portions are disposed at positions spaced apart from each other in the longitudinal direction of the tab piece, and hold both end portions (86, 87) of the tab piece pressed by the pressing portion in the longitudinal direction;

the supply device further includes a gap control unit (31) that moves the pair of holding units in a direction in which the pair of holding units approach each other by the gap changing unit when the pair of holding units hold the both end portions, respectively.

2. The supply device according to claim 1,

the supply device further includes:

a supply unit (15) for supplying the continuous belt-like member to the placement unit;

cutting parts (18, 26, 27) for cutting the continuous belt-shaped member supplied by the supply part to produce the belt loop sheet; and

and a cutting control unit (31) for cutting the continuous belt-shaped member by the cutting unit when the pressing unit presses the continuous belt-shaped member.

3. The supply device according to claim 1 or 2,

the first member and the second member of each of the pair of clamping portions are arranged vertically, and the first member is disposed above the second member;

the above-mentioned feeding device further includes: first clamping drive portions (61, 62) which can move the first member toward the second member for each of the pair of clamping portions; and a first clamping control portion (31) for clamping the both end portions of the tab sheet from above and below with the first member and the second member by the first clamping drive portion when the pressing portion presses the tab sheet;

the position of the mounting surface is different from the positions of the two end portions of the pair of holding portions held by the first holding control portion in a direction perpendicular to the mounting surface of the mounting portion.

4. The supply device according to claim 3,

the position of the mounting surface is above the position of the lower surface of the both end portions sandwiched by the pair of sandwiching portions in the direction perpendicular to the mounting surface of the mounting portion.

5. The supply device according to claim 3,

the supply device further includes:

a second clamp driving portion (64) that can move the pair of clamp portions in the width direction of the belt loop sheet;

a pressing control unit (31) that, after the first clamping control unit vertically clamps the two end portions of the belt loop sheet with the first member and the second member by the first clamping drive unit, moves the pressing unit upward away from the placement unit;

a second clamping control portion (31) for moving the pair of clamping portions in the width direction of the tab by the second clamping drive portion to separate the tab from the mounting portion after the pressing portion is separated from the mounting portion under the control of the pressing control portion; and

a third clamping control portion (31) which moves the pair of clamping portions in the width direction of the tab by the second clamping drive portion to supply the tab to the sewing device after the second clamping control portion separates the tab from the mounting portion by the second clamping drive portion;

when the pair of holding portions supply the belt loop sheet to the sewing device under the control of the third holding control portion, the spacing control portion moves the pair of holding portions in a direction to approach each other by the spacing changing portion.

6. The supply device according to claim 4,

the supply device further includes:

a second clamp driving portion (64) that can move the pair of clamp portions in the width direction of the belt loop sheet;

a pressing control unit (31) that, after the first clamping control unit vertically clamps the two end portions of the belt loop sheet with the first member and the second member by the first clamping drive unit, moves the pressing unit upward away from the placement unit;

a second clamping control portion (31) for moving the pair of clamping portions in the width direction of the tab by the second clamping drive portion to separate the tab from the mounting portion after the pressing portion is separated from the mounting portion under the control of the pressing control portion; and

a third clamping control portion (31) which moves the pair of clamping portions in the width direction of the tab by the second clamping drive portion to supply the tab to the sewing device after the second clamping control portion separates the tab from the mounting portion by the second clamping drive portion;

when the pair of holding portions supply the belt loop sheet to the sewing device under the control of the third holding control portion, the spacing control portion moves the pair of holding portions in a direction to approach each other by the spacing changing portion.