JP2006075197A - Buttoning sewing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve workability in receiving a button by a button holder. <P>SOLUTION: The buttoning sewing machine 1 has a needle rod driving means 14, a button holding means 10, a button supplying means 110, moving means 31, 42, a raising and lowering means 51, and an action control means 100 performing move control sewing and fixing a button B to a cloth by inserting a sewing needle 5 into a thread inserting hole of the button B held by the button holding means 10 in series by means of the needle rod driving means 14, the moving means 31, 42, and the raising and lowering means 51. The machine further has a receive position set means 103 setting a receive position where the button B supplied to the supplying position by the button supplying means 110 is received by the button holding means 10, the action control means 100 drives the moving means 31, 42 and the raising and lowering means 51 such that the button holding means 10 receives the button B at the button receive position. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a sewing machine with a button.

Conventionally, a sewing machine with a button has a vertical drive device that moves a needle bar that holds a sewing needle up and down, a button supply device that supplies a button having a threading hole to a predetermined supply position below the needle of the sewing needle, and a button supply A button holding device that receives the button supplied to the position, and a moving device that relatively moves the button held by the button holding device and the sewing needle in a direction perpendicular to the vertical movement direction of the needle bar. .
Here, the button supply device includes a button carrier on which a button is placed, an arm that supports the button carrier, and the arm is swung along a horizontal plane direction so that the button carrier is positioned between the button supply position and the button set position. It is equipped with a swivel device that reciprocally moves. In order to supply the button to the button supply position by such a button supply device, the button carrier is moved to the button set position by the turning device, the button is placed on the button carrier, and the button carrier is moved to the button supply position.
With such a button supply device, the button supplied to the button supply position is held from the left and right by a button chuck provided in the button holding device, and is sewn onto the fabric (for example, see Patent Document 1).
JP 2003-205189 A

  However, the conventional button holding device can only receive a button at the same receiving position. For this reason, when the types of buttons supplied to the button supply position are different, the button supply position and the button receiving position will be misaligned. Therefore, the mounting height of the button supply device itself, the amount of rotation of the swivel device by the button supply device The mounting angle of the arm or the like must be mechanically adjusted by the operator each time, and the button must be supplied to a position where the button holding device can receive the button.

  Accordingly, the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a button-attached sewing machine that can improve workability when a button is received by a button holding device.

  In order to solve the above problems, the invention according to claim 1 is a needle bar driving means for vertically moving a needle bar for holding a sewing needle, a button holding means for holding a button having a threading hole, and the button. A button supply means for supplying a button to a predetermined supply position held by the holding means; and a moving means for moving the button held by the button holding means along a direction orthogonal to the vertical movement direction of the needle bar. The button holding means is moved up and down, the needle bar driving means, the moving means and the vertical movement means are sequentially sewn to the threading hole of the button held by the button holding means. An operation control means for performing an operation control for inserting a needle and sewing the button on a cloth, wherein the button is fed to the predetermined supply position by the button supply means. Receiving position setting means for setting a button receiving position to be received by the button holding means, and the operation control means includes the moving means and the vertical movement means so that the button holding means receives a button at the button receiving position. Is driven.

According to the first aspect of the present invention, the button is supplied to the predetermined supply position by the button supply means, and the button receiving position where the button holding means receives the button is set by the reception position setting means. Thus, the operation control means drives the moving means and the vertical movement means so that the button holding means receives the button at the button receiving position set by the receiving position setting means.
Thus, even if the button supply position differs depending on the type or size of the button, the button holding means can receive the button at the button receiving position set corresponding to each button supply position.
Therefore, unlike the conventional case, it is not necessary for the operator to adjust the button supply means by mechanically adjusting the button supply means, and the workability when the button is received by the button holding means can be improved.

  According to a second aspect of the present invention, in the buttoned sewing machine according to the first aspect, the sewing condition setting means for setting various sewing conditions constituting the sewing data, and the various sewing conditions set by the sewing condition setting means. Storage means for storing a plurality of sewing data constructed based on the sewing condition setting means, wherein the sewing condition setting means can set the button receiving position as a sewing condition, and the operation control means is stored in the storage means. Based on one sewing data selected from the plurality of sewing data, the button holding means controls the moving means and the vertical movement means so as to receive a button at a set button receiving position, and the button holding The button held by the means is sewn to the fabric.

  Here, the sewing conditions are: sewing method, sewing shape at rake sewing, sewing shape at solid sewing, sewing shape at rake sewing, sewing shape at counter / force button sewing, upper button hole interval (vertical direction) And the horizontal direction), the needle drop interval (vertical direction and horizontal direction) of the lower feed, the number of stitches with buttons, the number of stitches at the start of sewing with buttons, the rake width, the rake amount, etc., and are not limited to the conditions listed here. That is, the parameters set when the sewing data is constructed are the sewing conditions.

According to the second aspect of the present invention, when various sewing conditions including the button receiving position are set by the sewing condition setting means, a plurality of pieces of sewing data constructed based on the set various sewing conditions are stored. Stored in the means. The operation control means includes a moving means and a vertical movement means so that the button holding means can receive the button at the set button receiving position based on one sewing data selected from the plurality of sewing data stored in the storage means. While controlling, the button hold | maintained at the button holding means is sewn on the cloth.
Accordingly, since the button receiving position is set as the sewing condition and stored in the storage means, the operation control means moves the button holding means to the set button receiving position, so that the button holding means receives the button. Will be able to. Therefore, the operator can easily work even if the button receiving position is not stored for each sewing condition.

According to the first aspect of the present invention, even if the button supply position differs depending on the type and size of the button, the button holding means is at the button receiving position set corresponding to each button supply position. Can receive a button.
Therefore, unlike the conventional case, it is not necessary for the operator to adjust the button supply means by mechanically adjusting the button supply means, and the workability when the button is received by the button holding means can be improved.

  According to the invention of claim 2, since the button receiving position is set as the sewing condition and stored in the storage means, the operation control means moves the button holding means to the set button receiving position, The button holding means can receive the button. Therefore, the operator can easily work even if the button receiving position is not stored for each sewing condition.

Hereinafter, the best mode of a button sewing machine according to the present invention will be described in detail with reference to the drawings.
<Configuration of sewing machine with buttons>
As shown in FIG. 1, the buttoned sewing machine 1 includes a bed portion 2, a vertical trunk portion 3 erected from the bed portion 2, and an arm portion provided so as to face the bed portion 2 from the vertical trunk portion 3. 4 is provided. In the following description, the front-rear direction and the up-down direction of the buttoned sewing machine 1 are as shown in FIG. 1, and are defined as the Y-axis direction and the Z-axis direction, respectively. Further, a direction perpendicular to the paper surface of FIG. 1 is a left-right direction (X-axis direction).

The sewing machine 1 with a button is fixed to the tip of a needle bar 9 provided at the tip of the arm portion 4, and is provided in the bed portion 2 so as to face the sewing needle 5 and a sewing needle 5 through which a thread is passed. A button is automatically sewn to a cloth (a sewing product) in cooperation with a looper (not shown). Since the formation of the seam by the operation of the looper is a well-known technique, a detailed description thereof is omitted.
The button-attached sewing machine 1 can perform various button-attached sewings by independently transporting buttons and fabrics independently. Hereinafter, various mechanisms for transporting buttons and the like will be described in detail.

<Needle bar drive mechanism>
First, a needle bar drive mechanism that moves the needle bar 9 holding the sewing needle 5 up and down will be described.
The needle bar 9 is moved up and down through a crank mechanism using a spindle motor 14 as a needle bar driving means as a drive source. The needle bar 9 is supported by a needle bar support that can swing about the Y-axis direction (front-rear direction) so as to move up and down. Accordingly, the needle bar 9 can swing the sewing needle 5 at the lower end thereof along the X-axis direction (left-right direction) while moving up and down. The needle bar support uses a needle swing motor 16 that is a pulse motor as a drive source. The needle swing motor 16 is driven and controlled in synchronism with the spindle motor 14 so as to be at the bottom dead center when the sewing needle 5 is positioned at both ends of the swing when the needle swing motor 16 is driven.

<Button holding device>
Next, a button holding device as button holding means for holding a button having a threading hole will be described.
The buttons are supported by the lower part of the middle part of the arm part 4 and the button holding parts 26L and 26R provided in the button holding arms 25L and 25R provided so that the tip part extends to the vicinity of the vertical movement path of the sewing needle 5. Retained. The button holding arms 25L and 25R are driven in the Y-axis direction by the upper Y-feed motor 31 supported at the base end portions so as to be movable along the Y-axis direction with respect to the arm portion 4. It has become.
Further, the button holding arms 25L and 25R are supported so that their base end portions can swing around the X-axis direction, and a vertical drive motor 51 is provided at the base end portion. By the vertical drive motor 51, the buttons held on the distal ends of the button holding arms 25L and 25R can move up and down.

As shown in FIGS. 2 and 3, the button holding device 10 includes a base body 18 that is supported by a body frame (not shown) inside the button sewing machine 1 so as to reciprocate in the Y axis direction, and a base end portion of the base body 18. A first link body 20 that is rotatably supported by the body 18 and holds the button B at the tip thereof, and one end portion of which is rotatably supported by the base body 18 and the other end portion thereof is the first. A second link body 15 rotatably connected to an intermediate portion of the link body 20, a Y-axis mechanism 30 for reciprocating the base body 18 along the Y-axis direction, and the first link body 20 as X An X-axis mechanism 40 that reciprocates along the axial direction and a Z-axis mechanism 50 that reciprocates the tip of the first link body 20 along the Z-axis direction are provided.
Further, the button holding device 10 includes a button holding unit opening / closing mechanism (not shown) for holding and releasing the button B via the two button holding arms 25L and 25R included in the first link body 20, and a button holding arm. Button raising mechanisms 70L and 70R for rotating the button B by 90 degrees via the button holding portions 26L and 26R included in the 25L and 25R.

  As shown in FIG. 3, the first link body 20 includes a main body plate 22 that is a substantially rectangular plate-like body, and base end portions that are erected from both ends of the main body plate 22 in the X-axis direction. The connecting arm portions 21L and 21R, both end portions of the connecting arm portions 21L and 21R are connected to the base end side connecting arm portions 21L and 21R, and supported by the sliding member of the base body in a penetrating state, and the bottom surface of the main body plate 22 Two button holding arms 25L and 25R supported in parallel in the Y-axis direction along the (negative Z-axis direction side plane), and a button holding portion 26L provided at the tip of each button holding arm 25L and 25R , 26R.

  The plate support shaft 23 is supported by the sliding member so as to be rotatable and slidable along the axial direction. Further, since the plate support shaft 23 is disposed along the X-axis direction, not only the movement of the button holding portions 26L and 26R in the Z-axis direction by rotation about the plate support shaft 23 but also the second The entire link body 20 can be reciprocated along the X-axis direction with respect to the base body.

The button holding arms 25L and 25R are supported by the main body plate 22 via a button holding unit opening / closing mechanism, and can be separated from each other. Specifically, when the drive shaft 68a of the opening / closing cylinder 68 moves in the Y-axis direction, the button holding arms 25L and 25R can be brought into and out of contact with each other.
Further, the button holding portions 26L and 26R are equipped to face each other at the positive Y-axis direction front ends of the button holding arms 25L and 25R. A concave portion into which the outer edge portion of the button B fits is formed in a portion opposite to the button holding portions 26L and 26R, and the button B is narrowed through the concave portion by the approach of the button holding arms 25L and 25R. It is possible to have. Further, each button holding portion 26L, 26R is supported at the front end of each button holding arm 25L, 25R via a rotation axis along the X-axis direction, and the rotation operation is input by the button erecting mechanisms 70L, 70R. Is done.

(Second link body)
As shown in FIGS. 2 and 3, the second link body 15 is formed in a deformed U shape, and is located on both sides in the X-axis direction of the first link body 20 at a position corresponding to the upper end portion of the U shape. And each is rotatably connected to the intermediate portion in the Y-axis direction. Further, it is rotatably connected to the positive end in the Y-axis direction of the base body 18 via the support shaft 17 at a position corresponding to the lower end of the U-shape. The two rotation axes of the second link body 15 with respect to the first link body 20 are on the same line and are all directed parallel to the X-axis direction. Further, as shown in FIG. 2, the base body support shaft 19 that connects the second link body 15 to the base body 18 is also oriented in the X-axis direction and is rotatable with respect to the base body 18 and in the axial direction. It is slidable along. Therefore, when the first link body 20 moves forward in the X-axis direction by the X-axis mechanism 40, the second link body 15 can move forward together with the first link body 20.

(Y-axis mechanism)
The base body 18 is supported so as to be able to move forward in the Y-axis direction inside the button-equipped sewing machine 1 and supports the link bodies 20 and 15 so as to be rotatable. That is, the base body 18 supports all the configurations of the button holding device 10 except for the shaft mechanisms 30, 40, 50.
A Y-axis mechanism 30 is disposed on the negative Y-axis direction end side of the base body 18. The Y-axis mechanism 30 is provided on the upper Y-feed motor 31 as a moving means supported by the body frame of the button sewing machine 1 with the output shaft directed in the X-axis direction, and the output shaft of the upper Y-feed motor 31. The pinion gear 32 is provided, and a rack portion 33 provided at the upper portion of the negative Y-axis direction end portion of the base body 18 is provided. The rack portion 33 is formed along the Y-axis direction, and a driving force in the Y-axis direction is applied to the base body 18 via the pinion gear 32 by driving the upper Y-feed motor 31. Accordingly, all the configurations of the button holding device 10 except for the shaft mechanisms 30, 40, 50 move in the Y-axis direction, and the button B held at the distal end portion of the first link body 20. It is possible to move forward in the X-axis direction.

(X-axis mechanism)
The X-axis mechanism 40 includes a motor holding frame 41 supported by the main body frame of the button-equipped sewing machine 1 and a differential motor 42 as a moving means held by the motor holding frame 41 with its output shaft directed in the Y-axis direction. And a pinion gear 43 provided on the output shaft of the differential motor 42, and a round bar-like rack member provided with a rack portion that is slidably supported along the X-axis direction by the motor holding frame 41 and meshes with the pinion gear 43 44, a receiving hole member 46 having a through-hole in the Y-axis direction and fixedly supported by the first link body 20, and a round bar-shaped rack member at its upper end (positive Z-axis direction end) And a transmission shaft 45 that is fixedly connected to 44 and whose lower end (negative Z-axis direction end) is inserted into the elongated hole of the receiving hole member 46.

  The long hole formed in the receiving hole member 46 has its longitudinal direction oriented in the Y-axis direction, and the width of the long hole in the X-axis direction is within the range in which the lower end of the transmission shaft 45 can be inserted. The width substantially coincides with the width of the lower end portion of the shaft 45 in the X-axis direction. On the other hand, the transmission shaft 45 is suspended and supported by the round bar-shaped rack member 44, and its lower end is inserted into the elongated hole from above the receiving hole member 46. And the lower end part of this transmission shaft 45 is made uniform in the width | variety of the X-axis direction so that it can insert in a long hole over predetermined length along the Z-axis direction.

  Accordingly, when the movement force in the X-axis direction is input to the round bar rack member 44 through the pinion gear 43 by driving the differential motor 42, the transmission shaft 45 moves together with the round bar rack member 44, and its lower end portion. , The entire first link body 20 can be moved in the X-axis direction by contacting the inside of the elongated hole of the receiving hole member 46. Since the first link body 20 and the second link body 15 can move forward along the X-axis direction with respect to the base body 18, the link bodies 20 and 15 are simultaneously moved with respect to the base body 18. It will move in the X-axis direction. As a result, the button B held at the tip of the first link body 20 can also be moved in the X-axis direction.

  Further, even when a movement force in the Z-axis direction is input to the second link body 20 by the Z-axis mechanism 50, the lower end portion of the transmission shaft 45 is made uniform along the Z-axis direction. The inside of the long hole 46 slides along the lower end portion of the transmission shaft 45 and does not hinder the movement of the first link body 20 in the Z-axis direction. This is the same even when the movement in the X-axis direction and the movement in the Z-axis direction are performed simultaneously.

  Further, since the receiving hole member 46 is engaged with the transmission shaft 45 by a long hole along the Y-axis direction, the first link body 20 moves in the Y-axis direction together with the base body 18 by the Y-axis mechanism 30. Even when a force is input, the lower end portion of the transmission shaft 45 relatively moves along the elongated hole, so that the movement of the first link body 20 in the Y-axis direction is not hindered. This is the same even when the movement in the X-axis direction and the movement in the Y-axis direction are performed simultaneously. Furthermore, the same applies when the movement in the X-axis direction, the movement in the Y-axis direction and the movement in the Z-axis direction are performed simultaneously. is there.

(Z-axis mechanism)
The Z-axis mechanism 50 includes a motor holding frame 50a supported by the main body frame of the button sewing machine 1 and an output shaft held by the motor holding frame 50a in the Z-axis direction. A vertical drive motor 51 as a vertical movement means to be moved to, a worm gear 52 mounted on an output shaft of the vertical drive motor 51, and a motor holding frame 51a rotatably supported with the rotary shaft in the X-axis direction. The worm wheel 53, the input link 54 connected to the worm wheel 53 on the same axis, the transmission link 55 whose one end is rotatably connected to the rotating end of the input link 54, and the transmission link 55 A linear motion link 56 having the other end thereof and its upper end rotatably connected to each other, and supported by the body frame of the button sewing machine 1, and the linear motion link 56 along the Z-axis direction. A linear guide 57 that allows only linear movement, a connecting rod 58 that faces the Y-axis direction and is fixedly connected to the lower end of the linear link 56, and the other end of the connecting rod 58. And an L-shaped rod-like body 59 having a tip portion extending downward.

  The worm wheel 53 and the input link 54 are connected by a rotation shaft along the X-axis direction, and the input link 54 is connected to the rotation shaft in a state where the longitudinal direction thereof is approximately in the Y-axis direction. Therefore, as a result of the rotation of the worm gear 52 being converted into rotation about the X axis, the end portion on the output side of the input link 54 moves in the Z axis direction within a certain range. The moving force in the Z-axis direction is transmitted to the linear motion link 56 via the transmission link 55.

  The linear motion link 56 is supported by the linear motion guide 57. This linear motion guide 57 has a guide hole oriented in the Z-axis direction in which a round bar-shaped linear motion link 56 can be inserted in a penetrating state, and this guide hole is provided with a bearing so that the linear motion link 56 can slide. It has been. Accordingly, the linear motion link 56 can move only along the Z-axis direction, and the displacement in the Y-axis direction that occurs at the tip of the input link 54 is eliminated by the rotation at both ends of the connection link 55.

The connecting rod 58 and the L-shaped bar 59 move in the Z axis direction together with the linear motion link 56. The L-shaped rod-like body 59 is bent at a right angle at an intermediate portion thereof, with the bent portion serving as a boundary, a portion on one end side is directed in the Y-axis direction, and a portion on the other end side is directed in the Z-axis direction. In this state, the other end is connected to the connecting rod 58.
In addition, the L-shaped rod-like body 59 hooks the receiving hook portion of the swinging member mounted on the first link body 20 at the portion directed in the Y-axis direction so that the tip portion of the first link body 20 is hooked. Move along the Z-axis direction. When the first link body 20 moves along the Y-axis direction regardless of whether or not it moves in the Z-axis direction, the L-shaped rod-shaped body 59 is directed in the Y-axis direction. The sliding movement of the receiving member of the swinging member along the Y-axis direction on the part allows the movement in the Y-axis direction without hindering the movement.
In addition, the receiving hook portion of the swinging member also has a round bar shape, and is mounted on the first link body 20 with its longitudinal direction directed in the X-axis direction. Therefore, when the first link body 20 moves along the X-axis direction regardless of whether or not it moves in the Z-axis direction, the L-shaped rod-shaped body 59 is directed in the Y-axis direction. By allowing the receiving collar portion to slide and move along the X-axis direction on the part, the movement in the X-axis direction is allowed without being hindered.
Therefore, the length of the portion along the Y-axis direction of the L-shaped rod-shaped body 59 is set to be at least the necessary movement amount in the Y-axis direction that the button holding device 10 plans for the button B.

<Button standing mechanism>
The button raising mechanisms 70L and 70R will be described with reference to FIG. The button erecting mechanisms 70L and 70R are provided on the button holding arms 25L and 25R, respectively, and move in the X-axis direction together with the button holding arms 25L and 25R by the moving force input from the button holding unit opening / closing mechanism. Since these button raising mechanisms 70L and 70R have a structure that is a surface object with reference to the YZ plane located between them, the button raising mechanism 70L will be described.

  The button raising mechanism 70L has an output link 72L having one end connected to the rotation shaft of the button holding portion 26L, an input link 71L rotatably connected to one end of the button holding mechanism 25L in the middle of the button holding arm 25L, and an output. One end of the link 72L is rotatably connected and the other end of the input link 71L is rotatably connected to the other end, and a rotational force is input to the input link 71L. The standing air cylinder 74L and the button B stand up from the horizontal state (the plane with the button hole along the XY plane) (the plane with the button hole along the XZ plane) ) And a standing stopper 75L that restricts further rotation of the output link 72L.

Each of the links 71L, 72L, 73L has a rotational axis at both ends thereof along the X-axis direction, thereby constituting a four-bar linkage mechanism. On the other hand, the standing air cylinder 74L is connected to the input link 71L via a rotating shaft whose tip end portion of the output shaft is inserted into a long hole along the link longitudinal direction provided in the intermediate portion of the input link 71L. Therefore, the linear forward movement of the output shaft is smoothly input as the rotational force of the input link 71L. Since the uniform distance is maintained by the transmission link 73L between the distal end portion of the input link 71L and the distal end portion of the output link 72L, when rotational force is input to the input link 71L, rotational force is also input to the output link 72L. It will be.
Further, the standing air cylinder 74L is a double-acting type, and can actively switch both the protruding and retracting of the output shaft.
That is, in the state of FIG. 3, when the output shaft of the rising air cylinder 74L is retracted, the output link 72L rotates in the clockwise direction and comes into contact with the rising stopper 75L and stops. From this state, the output of the rising air cylinder 74L When the shaft protrudes, the output link 72L rotates counterclockwise and stops at the stroke end of the standing air cylinder 74L.

<Bed area and tongue>
The upper surface of the bed portion 2 is a mounting table on which a cloth, which is a sewing object, is spread and placed when performing normal button sewing (so-called solid stitching) that is not rake stitching. The mounting table is provided with a force button holding portion that holds the force button when sewing the force button.
Further, as shown in FIG. 1, a tongue 91 is provided at the front end portion of the bed portion 2 so as to be able to rotate the base end portion around the X-axis direction. The tongue 91 is mounted on the front end portion of the bed portion 2 with the front end portion facing rearward, and the front end portion of the tongue 91 is thinned so as to be mounted with the fabric folded back. It is formed in a shape. The distal end portion of the tongue 91 can be brought into and out of contact with the vertical movement path of the sewing needle 5 by the rotation of the proximal end portion thereof. The tongue 91 is rotated by the tongue cylinder 92 as a drive source. A tongue sensor 93 is provided on the mounting table for detecting the approach when the tip of the tongue 91 approaches the vertical movement path of the sewing needle 5. The tongue cylinder 92 is drawn to the use position where the tip end of the tongue 91 is closest to the vertical movement path of the sewing needle 5 by the output of. When the tongue 91 moves to the use position, a leaf spring is provided at the front end portion of the mounting table so as to sandwich and hold the fabric set at the tip end portion of the tongue 91. The tongue cylinder 92 is automatically turned OFF when the sewing is completed, and the tongue 91 is tilted forward and returned to the original standby position.

<Control system for sewing machine with buttons>
Next, a control circuit of the button sewing machine 1 will be described with reference to FIG. The button-equipped sewing machine 1 is provided with an electrical box 100 including a CPU 101 and a memory 102, and each part is connected to the electrical box 100.
The CPU 101 develops the program stored in the memory 102 in the work area in the memory 102 and controls the operation of each part of the button sewing machine 1.
The memory 102 stores receiving position data relating to a button receiving position for each sewing condition, which will be described later. Specifically, the position coordinates of the X, Y, and Z axes of the button receiving position when a predetermined position of the button holding device 10 is set as the origin. Functions as storage means for storing. The memory 102 also stores a plurality of sewing data constructed from the set sewing conditions.

  The memory 102 stores various programs for controlling the operation of each unit of the button sewing machine 1. For example, the memory 102 stores the button holding device 10 with respect to the sewing needle 5 in the X-axis direction by the cooperation of the spindle motor 14, the upper Y feed motor 31, the vertical drive motor 51, and the differential motor 42 shown in FIG. 1. Operation control for moving in the Y-axis direction and Z-axis direction and performing operation control for inserting the sewing needle 5 sequentially into the threading hole of the button B held by the button holding device 10 and sewing the button B to the fabric. The program is stored.

Here, the operation control program drives the upper Y feed motor 31, the vertical drive motor 51, and the differential motor 42 so that the button holding device 10 receives the button B at the button receiving position set by the operation panel 103.
Further, the position coordinates of the button receiving position set by the operation panel 103 are read from the memory 102, and the upper Y feed motor 31 and the vertical drive motor are received so that the button B is received at the button receiving position based on the read position coordinates of the button receiving position. 51, the differential motor 42 is driven.
That is, when the CPU 101 executes the operation control program, the electrical box 100 as a control circuit functions as an operation control unit.

For example, an operation panel 103, a power switch 104, a start pedal 105, a temporary stop switch 106, and the like are connected to the electrical equipment box 100.
The operation panel 103 is a reception position where an operator inputs and sets a button reception position for receiving a button B supplied from the button supply mechanism 110 described later to the button supply position by the button holding units 26L and 26R of the button holding device 10. Functions as setting means. Specifically, the operator can input the X, Y, and Z coordinates of the button receiving position on the operation panel 103.

Further, the operation panel 103 functions as a sewing condition setting means for an operator to input and set various sewing conditions constituting the sewing data.
Here, the sewing conditions are: sew stitch, solid stitch, rake stitch, root winding stitch, counter / force button stitch, etc., the sewing shape in the selected stitch method, upper button hole interval, lower feed The needle drop interval, the number of stitches with buttons, the number of stitches at the beginning of button stitching, the rake width, the rake amount, the button height, the number of stitches at the start of neckline stitching, etc. can be set, and the button feed mechanism 110 (to be described later) supplies it to the button feed position The button receiving position for receiving the selected button by the button holding device 10 can be set, and the sewing condition can be additionally changed by corresponding software.
The operation panel 103 can also display the set sewing conditions, sewing conditions, and the like.

An external memory 103a such as a flash memory can be connected to the operation panel 103, and sewing data can be set by reading sewing data from the external memory 103a. Conversely, various sewing conditions input from the operation panel 103 can be stored in the external memory 103a.
The power switch 104 is an ON / OFF switch for turning on the button sewing machine 1. The start pedal 105 is a pedal that is operated when sewing is started. When this is operated, sewing is started under the control of the CPU 101. The temporary stop switch 106 is a switch for temporarily stopping after starting sewing.

Further, an interface (not shown) is provided in the electrical box 100, and a control signal from the CPU 101 is output to each drive source via the interface and a drive circuit (not shown).
That is, the spindle motor 14, the needle swing motor 16, the upper Y feed motor 31, the vertical drive motor 51, the differential motor 42, and the lower Y feed motor 95 are connected via the interface.
Further, a plurality of solenoid valves 108 are connected via an interface, and standing air cylinders 74L and 74R, a tongue cylinder 92, a cloth presser cylinder 107, and a thread trimming cylinder 109a are connected via the solenoid valves 108, respectively. .
The button supply mechanism 110 is connected via an interface.

(Button supply mechanism)
Next, the button supply mechanism 110 will be described with reference to FIGS. The button supply mechanism 110 serving as a button supply unit conveys the button B set at the button setting position (position shown in FIG. 4) to the button supply position (position shown in FIG. 5) and supplies the button B to the button holding device 10. And a button holding base 120, a parallel four-bar linkage mechanism 130, a driving device 140 (a rotary motor 141 and a bevel gear 142), and the like. In the present embodiment, the button holding base 120, the parallel four-bar linkage mechanism 130, and the driving device 140 are disposed on the right side surface of the arm unit 4.

The button holding base 120 is a member for holding the button B in a horizontal state, and is joined to the driven member 133 of the parallel four-bar link mechanism 130 at the end thereof. A plurality (two in the present embodiment) of button sets 121 are arranged in the longitudinal direction of the button holding base 120, and the button holding base 120 is located at the button set position, and the longitudinal direction is along the front-rear direction. In this state, the button set portion 121 is positioned forward, that is, on the worker side.
Each button set portion 121 is provided with a plurality of pins 121a corresponding to the positions of the button holes. By inserting the pins 121a into the button holes, the button B is held by the button holding base 120. It has become.

The parallel four-bar linkage mechanism 130 is a mechanism for moving the button holding base 120 between the button set position and the button supply position. The parallel four-bar linkage mechanism 130 includes a fixing member 131, a driving member 132, a driven member 133, and a rotating member 134.
The fixing member 131 is a member that is joined to the arm portion 4 and supports the driving device 140. The fixing member 131 extends upward from the horizontal portion 135 disposed substantially horizontally and the left side surface of the horizontal portion 135. The side part 136 and the back part 137 extended upward from the rear part of the horizontal part 135 are provided.

The side surface portion 136 is formed with an opening 136a penetrating left and right, and is screwed to the right side surface of the arm portion 4 through the opening 136a.
The back surface portion 137 includes an opening 137a penetrating in the front-rear direction, and the rotation motor 141 of the driving device 140 is fixed to the back surface portion 137 with the rotation shaft 141a inserted through the opening 137a. Although a detailed description will be given later, a bevel gear 142a is attached to the rotating shaft 141a.
The horizontal portion 135 is a substantially rectangular plate having two openings 135a penetrating vertically, and the driving member support portion 200 and the rotation member support portion 300 are inserted through these openings 135a.

The driving member support unit 200 is provided to support the driving member 132 so as to be rotatable in a horizontal plane and to transmit the driving force of the driving device 140 to the driving member 132, and includes a cylinder 201, a rotating shaft 202, and the like. Yes. The cylinder 201 is fixed in a state of being inserted through the opening 135 a behind the horizontal portion 135, and the rotation shaft 202 is inserted into the cylinder 201.
A driving member 132 is fixed to the lower end of the rotating shaft 202, and a bevel gear 142 b is fixed to the upper end of the rotating shaft 202. The bevel gear 142b is meshed with the bevel gear 142a so that the driving force of the rotary motor 141 can be transmitted to the rotary shaft 202. When the rotary motor 141 is driven, the rotary shaft is rotated via the bevel gear 142. 202 rotates around the axis, and the driving member 132 rotates together with the rotating shaft 202.

The rotating member support unit 300 is provided to support the rotating member 134 so as to be rotatable in a horizontal plane, and includes a cylindrical body 301, a rotating shaft 302, a bearing 303, and the like. The cylindrical body 301 is fixed in a state of being inserted through the opening 135 a in front of the horizontal portion 135, and the rotating shaft 302 having the rotating member 134 fixed to the lower end is inserted into the cylindrical body 301 and is rotated around the axis by the bearing 303. It is rotatably supported.
The driving member 132 is joined to the rotating shaft 202 of the driving member support 200 at one end thereof and is rotatably connected to the driven member 133 at the other end. Specifically, the other end portion side of the driving member 132 is formed to extend obliquely downward, and an opening 132a penetrating vertically is formed at the tip portion. The opening 132 a is inserted with a substantially cylindrical first connecting member 310 that protrudes upward from the end of the driven member 133, and the driving member 132 is inserted through the first connecting member 310. 133 is rotatably connected to 133.

  The driven member 133 is a substantially L-shaped member in plan view that is joined to the button holding base 120 and moves according to the rotation of the driving member 132. As described above, the first connecting member 310 is provided at one end of the driven member 133, and the driven member 133 is rotatably connected to the driving member 132. The second end of the driven member 133 is provided with a second connecting member 311 having a substantially cylindrical shape, and is rotatably connected to the rotating member 134 via the second connecting member 311. . The button holding base 120 is attached to a portion extending laterally from the other end of the driven member 133.

  The rotating member 134 is joined to the rotating shaft 302 of the rotating member support 300 at one end thereof, and is rotatably connected to the driven member 133 at the other end. Specifically, the other end portion side of the rotating member 134 is formed so as to extend obliquely downward, and an opening 134a penetrating vertically is formed at the tip portion thereof. A substantially cylindrical second connecting member 311 provided so as to protrude upward from the end of the driven member 133 is inserted into the opening 134 a, and the rotating member 134 is inserted through the second connecting member 311. 133 is rotatably connected to 133.

  Here, as shown in FIG. 7, a straight line connecting both ends of the driving member 132, that is, a joint point between the driving member 132 and the rotating shaft 202 of the driving member support portion 200, and the driving member 132 and the first connecting member 310. Let L1 be a straight line connecting the connection points. Then, a straight line connecting both ends of the rotating member 134, that is, a straight line connecting a joint point between the rotating member 134 and the rotating shaft 302 of the rotating member support 300 and a connecting point between the rotating member 134 and the second connecting member 311. Is L2. A straight line connecting both ends of the driven member 133, that is, a straight line connecting the joint point of the first connecting member 310 and the joint point of the second connecting member 311 is defined as L3. A straight line connecting a joint point between the driving member 132 and the rotating shaft 202 of the driving member support unit 200 and a joint point between the rotating member 134 and the rotating shaft 302 of the rotating member support unit 300 is defined as L4. Then, when viewed in plan, the fixed member 131, the driving member 132, the driven member 133, and the rotating member 134 are connected so that the straight line L1 and the straight line L2 are parallel, and the straight line L3 and the straight line L4 are parallel. Thus, a parallel four-joint link mechanism 130 is configured.

  Further, an auxiliary member 312 is rotatably connected to a substantially central portion in the longitudinal direction of the driving member 132 and a substantially central portion in the longitudinal direction of the rotating member 134. When the rotary motor 141 is driven, as shown in FIG. 7, the driving member 132 rotates counterclockwise in a substantially horizontal plane around the joint portion with the rotary shaft 202, that is, toward the vertical body 3 side. First, the driven member 133 moves rearward as the driving member 132 rotates. As the driven member 133 moves, the rotating member 134 also rotates around the joint with the rotating shaft 302. However, due to the nature of the parallel four-bar linkage mechanism 130, the straight line L3 and the straight line L4 are always viewed in plan. Move while maintaining parallel state. Accordingly, the button holding base 120 moves while maintaining the orientation at the button set position, that is, in a state where the longitudinal direction thereof is along the front-rear direction, while the button set portion 121 is positioned forward.

Thereafter, the driving member 132, the driven member 133, and the rotating member 134 reach a so-called dead point where they are aligned on the same straight line L in plan view. In this state, in the general parallel four-joint link mechanism 130, the connection point between the driven member 133 and the rotating member 134 can be located on either side of the straight line L. Since the auxiliary member 312 is attached to the parallel four-joint link mechanism 130 shown in the form, the connection point between the driven member 133 and the rotating member 134 does not lie on the right side with respect to the straight line L, and passes through the dead point. can do.
Thereafter, the button holding base 120 moves to the vicinity of the button holding device 10 at the button supply position (see FIG. 6), and the button holding arms 25L and 25R hold the button B between the button holding portions 26L and 26R facing left and right. This completes the button supply operation.

  Further, the button-equipped sewing machine 1 is provided with a thread trimming mechanism (not shown) so that the thread is cut at a predetermined timing during or after sewing as shown in FIG. A trimming motor 109 and a thread trimming cylinder 109a are provided.

The button-equipped sewing machine 1 having the above-described configuration moves in the X-axis direction by driving the differential motor 42 and moves in the Y-axis direction by driving the upper Y-feed motor 31 to drive the button up and down. The Z-axis direction can be performed by driving the motor 51.
Further, the fabric can be moved in the Y direction by driving the lower Y feed motor 95. In addition, the needle drop position of the sewing needle 5 can be positioned in the X-axis direction by driving the needle swing motor 16 that swings the needle bar 9 in the X-axis direction.
That is, the needle swing motor 16, the upper Y feed motor 31, the differential motor 42 and the lower Y feed motor 95 cooperate with each other to hold the button B held on the button holding arms 25 </ b> L and 25 </ b> R and the fabric held on the tongue 57. , The needle drop position of the sewing needle 5 is relatively positioned. Further, the lower Y feed motor 95 retracts the tongue 91 from the sewing needle 5.

<Operation explanation of sewing machine with buttons>
Next, the operation of the buttoned sewing machine 1 configured as described above will be described.
As shown in FIG. 8, when the sewing data used for sewing changes, and the button B to be sewn on the cloth also changes, it is necessary to adjust the button receiving positions of the button holding portions 26L and 26R of the button holding device 10. . In such a case, when the operator performs a predetermined operation from the operation panel 103, the CPU 101 displays a data input screen D1 as shown in FIG. The data input screen D1 displays the current sewing conditions and sewing status. Specifically, the sewing method P1, the sewing shape P2, the upper buttonhole interval P3, the button height P4, the rake width P5, and the like are displayed. Has been. A sewing data display button B1 for switching to the sewing data screen D2 for changing the sewing data is displayed on the center left side of the data input screen D1.

  Here, if the type of the button B to be sewn is changed, it is necessary to change the sewing data. Therefore, the operator presses the sewing data display button B1 displayed on the data input screen D1. When the sewing data display button B1 is pressed, the CPU 101 displays a sewing data screen D2 on the operation panel 103 as shown in FIG. On the sewing data screen D2, the current sewing conditions and sewing status are displayed on the upper side, and a plurality of sewing data item buttons B2 indicating sewing data items that can be changed are displayed on the lower side. On the right side of the sewing data item button B2, an up / down scroll button B3 for scrolling the list of the sewing data item buttons B2 up and down is displayed. That is, when the operator presses the up / down scroll button B3, the list of the sewing data item buttons B2 is scrolled line by line in the direction in which the up / down scroll button B3 is pressed.

When the operator changes the setting of the button receiving position by the button holding device 10, the receiving position adjustment button B4 is displayed on the sewing data screen D2 using the up / down scroll button B3, and the displayed receiving position adjustment button B4 is displayed. Press.
When the reception position adjustment button B4 is pressed, the CPU 101 displays a reception position adjustment screen D3 on the operation panel 103 as shown in FIG. On the receiving position adjustment screen D3, the position adjustment of the button holding portions 26L and 26R in the X-axis direction and the Y-axis direction is adjusted in the XY direction adjustment button B5 and the button holding portions 26L and 26R in the Z-axis direction. A Z direction adjustment button B6 for performing the operation, an enter button B7 for confirming the adjusted position, and the like are displayed.

  In order to adjust the button receiving position by the buttons B5, B6, B7, the amount of movement of the button holding portions 26L, 26R in the X axis direction and the Y axis direction is set by the XY direction adjustment button B5, The amount of movement of the button holding portions 26L, 26R in the Z-axis direction is set by the Z direction adjustment button B6. The amount of movement in the XY direction is displayed as a numerical value corresponding to the number or time of pressing the XY direction adjustment button B5, and the amount of movement in the Z direction is displayed as a numerical value corresponding to the number of times the Z direction adjustment button B6 is pressed or time. Is done. Then, when the enter button B7 is pressed, the movement amount data in the X-axis direction, the Y-axis direction, and the Z-axis direction for determining the receiving position of the button is set and stored, and the CPU 101 executes the operation control program. Thus, the button holding units 26L and 26R are moved by the movement amount set on the receiving position adjustment screen D3 so that the button holding units 26L and 26R receive the button B from the button supply mechanism 110.

<Effects of Embodiment>
According to the button-equipped sewing machine 1 in the embodiment, the button B is supplied to the button supply position by the button supply mechanism 110, but the button holding portion 26 </ b> L, 26 </ b> R receives the button B by the operation panel 103. By setting, the CPU 101 causes the upper holding motor 26, the vertical drive motor 51, and the differential motor 42 so that the button holding units 26L and 26R hold the button B at the button receiving position set by the operation panel 103. Drive.
As a result, even if the button B is supplied to a different position depending on the type and size of the button B, the button holding device 10 moves the button B at the button receiving position set corresponding to the supply position of each button B. Can receive.
Therefore, unlike the conventional case, the operator does not need to adjust the button supply mechanism 110 mechanically to adjust the supply position of the button, and the workability when the button B is held by the button holding device is improved. Can do.

When various sewing conditions including the button receiving position are set by the operation panel 103, a plurality of sewing data constructed based on the set various sewing conditions are stored in the memory 102. Then, the CPU 101 executes the operation control program so that the button holding units 26L and 26R are set by the operation panel 103 based on one piece of sewing data selected from the plurality of pieces of sewing data stored in the memory 102. The upper Y feed motor 31, the differential motor 42, and the vertical drive motor 51 are controlled so that the button B can be received at the button receiving position, and the button B held by the button holding portions 26L and 26R is sewn to the fabric.
As a result, the button receiving position is set as a sewing condition and stored in the memory 102. Therefore, when the CPU 101 executes the operation control program, the button holding portions 26L and 26R are moved to the set button receiving position. Button B can be received. Therefore, the operator can easily work even if the button receiving position is not stored for each sewing condition.

It is a block diagram of a button sewing machine. It is a perspective view of a button holding device. It is a perspective view of a button holding device. It is a perspective view in case a button supply mechanism exists in a button set position. It is a perspective view in case a button supply mechanism exists in a button supply position. It is a perspective view of a button holding part. It is a schematic diagram explaining the button supply operation | movement of a button supply mechanism. It is a figure which shows the example of a display of a data input screen. It is a figure which shows the example of a display of a sewing data screen. It is a figure which shows the example of a display of a receiving position adjustment screen.

Explanation of symbols

1 sewing machine with buttons 5 sewing needle 9 needle bar 14 spindle motor (needle bar drive means)
31 Upper Y feed motor (moving means)
42 Differential motor (moving means)
51 Vertical drive motor (vertical movement means)
10 Button holding device (button holding means)
100 Electrical box (operation control means)
102 memory (storage means)
103 Operation panel (receiving position setting means, sewing condition setting means)
110 Button supply mechanism (button supply means)
B button

Claims (2)

Needle bar drive means for moving the needle bar holding the sewing needle up and down;
Button holding means for holding a button having a threading hole;
Button supply means for supplying a button to a predetermined supply position held by the button holding means;
Moving means for moving the button held by the button holding means along a direction perpendicular to the vertical movement direction of the needle bar;
Vertical movement means for moving the button holding means in the vertical direction;
The needle bar driving means, the moving means, and the up-and-down moving means perform operation control for sequentially inserting sewing needles into the threading holes of the buttons held by the button holding means and sewing the buttons on the cloth. Action control means to perform,
A sewing machine with a button,
A receiving position setting means for setting a button receiving position for receiving the button supplied to the predetermined supply position by the button supply means by the button holding means;
The button control sewing machine, wherein the operation control means drives the moving means and the vertical movement means so that the button holding means receives a button at the button receiving position. Sewing condition setting means for setting various sewing conditions constituting the sewing data;
Storage means for storing a plurality of sewing data constructed based on various sewing conditions set by the sewing condition setting means;
With
The sewing condition setting means can set the button receiving position as a sewing condition,
The operation control means includes the moving means and the moving means so that the button holding means can receive a button at a set button receiving position based on one sewing data selected from a plurality of sewing data stored in the storage means. 2. The button-attached sewing machine according to claim 1, wherein the vertical movement means is controlled and the button held by the button holding means is sewn to the cloth.

Images