JP5339137B2 - Button holder device for sewing machine with buttons - Google Patents

Description

  The present invention is equipped with a button-attached sewing machine that mainly sews various buttons such as flat buttons on fabrics such as men's and women's clothing, and more specifically, they are juxtaposed on a fixed support base and straight in the same direction. A pair of left and right button holders that are slidably supported in a reciprocating manner, a pair of button sandwiching members that are attached to the tip portions of the pair of left and right button holders and are positioned opposite to each other in the radial direction of the buttons, and the pair of button sandwiches The pair of left and right button holders are moved in the same amount and at the same speed in opposite directions so that the members can be moved closer to each other to hold the button from both sides in the radial direction and to be separated from each other to release the holding state of the button. The present invention relates to a button holder device for a button-equipped sewing machine that includes a slide drive mechanism that reciprocates and slides.

  In general, the flat button most frequently used as a button to be sewn by this type of button sewing machine has a diameter of 8 to 14 mm (hereinafter referred to as a small button) and a range of 15 to 24 mm. There are a plurality of types of buttons having different diameters, including those belonging to the range (hereinafter referred to as middle buttons) and those belonging to the range of 25 to 32 mm (hereinafter referred to as large buttons). In the button holder device, even if any of a plurality of types of buttons including large, medium, and small buttons is to be sewn, the button can be struck by vibration or shock of the sewing machine in order to obtain a secure and attractive sewing. It is an important role that the button to be sewn can be firmly and securely pinched and held from both sides in the radial direction by the pair of button pinching members so as not to fall off or tilt.

  The button holder device for a button-attached sewing machine that plays such an important role basically employs a configuration as shown in FIGS. That is, the button holder base 30a that has rising plate portions on both the left and right sides and that opens upward and on both the front and rear sides, and is fixed to the upper side portions of the right and left rising plate portions so as to block the upward opening of the button holder base 30a. A swing lever mounting base 31, which will be described later, is fixed to the left and right center positions on the bottom plate surface of the button holder base 30a in the fixed support base 30 including the slide lid 30b. A pair of left and right button holders 32L and 32R having a letter shape are supported side by side so as to be linearly reciprocable in the longitudinal direction. A pair of button sandwiching members 35L and 35R are attached to the bent tip portions 32la and 32ra of the pair of left and right button holders 32L and 32R in a state of being opposed to each other in the radial direction of the button B. The pair of button sandwiching members 35L and 35R is a laminated body of two upper and lower button holder spacers 33l and 33r and button receiving plates 34l and 34r that are curved in an arc shape so as to partially contact the outer peripheral surface of the button B. The pair of left and right button holders 32L, 32R are fixed to the tip portions 32la, 32ra of the pair of left and right button holders 36L, 36R.

  On the outer surface of the slide lid 30b of the fixed support base 30, an air cylinder 38 serving as an actuator that is extended and contracted with a fixed stroke in the sliding direction of the pair of left and right button holders 32L and 32R via a cylinder mounting base 37 is provided. A movable rod that is fixedly supported by the air cylinder 38 and is configured such that air is supplied and discharged through the tube 41, the joint 42, the universal elbow 43, and the like into the cylinder portion of the air cylinder 38 and is driven to extend and contract in the sliding direction. A cylinder guide 45 is fixed to the front end portion of 38 a via a lock nut 44. Further, a sleeve collar 39 is inserted and held at the tip of the mounting base 31 so as to be rotatable around its axis, and both ends of the sleeve collar 39 can swing back and forth in opposite directions with the axis as a fulcrum. The swing lever 40 is fitted and held, and pins 40a and 40b projecting downward from both ends of the swing lever 40 are formed on the upper surfaces of the intermediate portions of the pair of left and right button holders 32L and 32R. A roll pin 46 is inserted into the right button holder 32R and engaged with the joint portions 32lb and 32rb so as to connect the button holder 32R and the cylinder guide 45 so as to be integrally movable.

  In the button holder device for a button-attached sewing machine configured as described above, when the air cylinder 38 is driven to extend and contract, the expansion / contraction driving force is transmitted to the right button holder 32R via the roll pin 46, and the right button holder. The reciprocating sliding force of the right button holder 32R is transmitted to the left button holder 32L via the pin 40b, the swing lever 40, and the pin 40a, and the left button holder 32L. Is reciprocally driven and reciprocated in the same direction and at the same speed as the right button holder 32R. As a result, the pair of button sandwiching members 35L and 35R are switched to a state in which the button B is sandwiched and held from both sides in the radial direction and a state in which the button B is released from being separated from each other.

  In the button holder device having the basic configuration as described above and operating as described above, conventionally, the air cylinder 38 corresponds to button types having different diameters such as large, medium, and small buttons. A plurality of types of left and right pairs of button holders 32L and 32R having different lengths so that the sliding amount associated with the expansion and contraction drive at a constant stroke of the button and the arc of the portion that contacts the button outer peripheral surface corresponding to the diameter of the button B Prepare a plurality of button holder sets composed of a plurality of types of button sandwiching members 35L, 35R having different curvature ratios, and according to the type change of the sewing target button B, the pair of left and right button holders 32L , 32R and a button holder set composed of the button pinching members 35L, 35R have been adopted (for example, see Non-Patent Document 1). ).

  On November 1, 2004, Yamato Sewing Machine Manufacturing Co., Ltd. has a parts list of “ILLUSTRATED SPARE PARTS LIST FOR ELECTRONIC CONTROLLED POSTED SETON, MODELS NB3000 NB3100 No. 2”, p. 8-9

  However, according to the above-described conventional button holder device, it is necessary to prepare a plurality of button holder sets including the button holders 32L and 32R and the button holding members 35L and 35R corresponding to the number of types of buttons having different diameters. Therefore, the number of parts that make up the device is extremely large, which not only increases the cost, but also many parts that are not in use and not in use when a set of button holders is installed. The storage management is troublesome, and it is easy to lose parts or drop them on the floor. In addition, every time the button to be sewn is changed, the button holder set that has been installed so far is removed, and the button holder set that is to be used next is installed, which makes it cumbersome and time-consuming. I need. Therefore, when sewing multiple types of buttons with different diameters on a piece of clothing or other fabric, it takes a lot of time to replace the button holder set, and the efficiency of the buttoning operation as a whole is unavoidably reduced. there were.

  The present invention has been made in view of the above-mentioned circumstances, and one type of button holder set can be used for a plurality of types of button holders, so that the cost can be reduced by reducing the number of parts and there is a risk of parts being lost or damaged. A button holder device for a button-attached sewing machine that can be securely held in a secure and stable manner without dropping or tilting regardless of the type of button to be sewn. The purpose is to do.

In order to achieve the above object, a button holder device for a button-attached sewing machine according to the present invention includes a pair of left and right button holders that are juxtaposed on a fixed support base and supported linearly and reciprocally slidable in both directions . A pair of button sandwiching members attached to the distal end portions of the pair of left and right button holders and facing each other in the radial direction of the button, and a state in which the pair of button sandwiching members approach each other to sandwich and hold the button from both radial sides and buttons and a, a slide driving mechanism for the same amount and drive reciprocating sliding in the speed of the pair of left and right buttons holder in the lateral directions opposite to each other to be switched to a state to release the spaced pinch the button held together with a button holder device of the sewing machine, the pair of buttons pinching member, gradually as the button pinching member sides respectively opposite sides Formed in a planar shape substantially V-shape so as to open, these respective pair of left and right buttons pinching member, adjustable position in the sliding direction and the same direction of these buttons holder to the distal end portion of the pair of left and right buttons holders The shaft-like members are continuously provided, and on the outer peripheral surface of these shaft-like members, among the plurality of types of buttons having different diameters, a plurality of axial directions corresponding to at least two types of button diameters are provided at the left and right sides. Tightening fixing comprising a groove having a V-shaped or U-shaped cross-section into which the tip of a screw tool screwed and held at the tip part of a pair of button holders or a hole through which the screw tool penetrates in the radial direction of the shaft-like member A gauge portion is formed, the position of the shaft-like member of each of the pair of button pinching members is adjusted in the direction, and a screw tool is fastened and fixed in accordance with the gauge portion. Is characterized by certain pair of buttons scissors member under drive reciprocating sliding strokes is configured to hold and scissors holding release sandwiching the at least two kinds of buttons of the drive mechanism.

In the button holder device for a button-attached sewing machine according to the present invention, as the slide drive mechanism, as described in claim 2 , the actuator that is driven to extend and contract at a constant stroke, and the left and right as the actuator is driven to extend and retract by a fixed stroke. consists of a rocking lever which both ends as a fulcrum a central portion between the pair of buttons holder is reciprocally swung in opposite directions, left and right opposite pair of left and right buttons holders in conjunction with the reciprocating oscillation of the swing lever together Those configured to slide back and forth in the same direction and at the same speed are preferable.

  According to the button holder device of the button attachment sewing machine according to the present invention having the characteristic configuration as described above, the position of the shaft-like member of each of the pair of button pinching members is adjusted according to the type change of the button to be sewn, In addition, by simply performing a very simple operation such as tightening and fixing a screw tool in accordance with the gauge portion formed on these shaft-like members, a pair of button holder sets consisting of a pair of left and right button holders and a pair of button sandwiching members can be obtained. It can also be used as a holder device for a plurality of types of buttons. Therefore, the number of parts that make up the device can be greatly reduced, and not only can the cost be significantly reduced, but also there is no part that is not in a non-mounted / unused state, so that the trouble of storing and managing parts can be saved. There is no risk of parts being lost or damaged. In addition, since it does not require a large and troublesome work like when replacing a conventional button holder set, even when a plurality of types of buttons having different diameters are sewn on a single fabric, the efficiency of the overall buttoning work can be improved. be able to.

  In addition, the slide stroke of the pair of left and right button holders can be adapted to the type (diameter) of the button by simply tightening and fixing the screw tool in accordance with the fastening and fixing gauge formed on the shaft-like member of each of the pair of button sandwiching members. The stroke can be changed easily and easily, so that any button of any type can be sewn, securely and securely so that it does not fall off due to vibration or shock of the sewing machine. It is possible to stably hold and hold, and this brings about an effect that it is possible to always perform buttoning with a good appearance.

In particular, as a gauge for positioning and fixing a pair of button sandwiching members, a V-shaped or U-shaped groove in which the tip of the screw member is fitted on the outer peripheral surface of the shaft-like member , or the screw tool has a diameter of the shaft-like member. Since a hole penetrating in the direction is formed, a pinch member whose position is adjusted in accordance with the button type by preventing the rotation of the shaft-like member by engaging the stopper with the concave groove or hole of the cage Can be fixed and held in a certain posture, and therefore, the buttons can be securely held in a certain posture with respect to the fabric without falling down or tilting with a pair of button sandwiching members. Can be sewn well.

  Further, as a mechanism for driving and sliding the pair of left and right button holders, a mechanism comprising an actuator that is driven to extend and contract at a fixed stroke and a swing lever that reciprocally swings as the actuator is driven to extend and contract by a fixed stroke is used. The button holder device as a whole can be easily made compact and small.

1 is a schematic overall perspective view of a sewing machine with a button according to the present invention. It is a side view of the button holder apparatus which is the principal part of this invention. It is a top view of a button holder apparatus same as the above. It is an enlarged plan view of the principal part of a button holder apparatus same as the above. It is an enlarged plan view of the principal part explaining a use state in case a button holder device same as the above is used for sewing three kinds of buttons, large, medium and small. It is an expansion disassembled perspective view of the principal part of the button holder apparatus of the conventional button sewing machine. It is an expansion assembly perspective view of the principal part of the button holder of the conventional button sewing machine same as the above.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic overall perspective view of a button-equipped sewing machine according to the present invention. The button-equipped sewing machine 1 is provided with a needle 3 that reciprocates up and down at a fixed position via an elevating drive mechanism provided in a sewing machine arm 2. At the front of the vertical movement path of the needle 3, the vertical movement of the needle 3 is performed with the fabric (not shown) to be sewn with the button B (shown in FIGS. 2 and 3) folded in two. Fabric holder 4 to be set on the path, fabric guide 5 for guiding the set folded fabric in the horizontal direction along the horizontal plane, button holder device 6 for holding and holding the button B from both sides in the radial direction, fabric when the button is attached And a wiper 7 etc. that can project and retreat with respect to the up-and-down movement path of the needle 3 and can remove the needle thread after thread trimming diagonally rearward and upward after the buttoning process is completed. Arrangement It has been constructed by. Since each of these components is well known, detailed description thereof will be omitted.

The button holder device 6 in the button sewing machine 1 having the basic configuration as described above is configured as shown in FIGS. That is, a button holder base 8a having rising plate portions on both the left and right sides and opening upward and both front and rear sides, and rising plates on both the left and right sides of the button holder base 8a so as to block the upward opening of the button holder base 8a. A swing lever mounting base 9, which will be described later, is fixed at the left and right central positions on the bottom plate surface of the button holder base 8a in the fixed support base 8 comprising a slide lid 8b fixed to the upper side of the part. On the left and right sides of the mounting base 9, a pair of left and right button holders 10L, 10R having a substantially L shape and different lengths are supported side by side so as to be linearly reciprocable in the left-right direction . The bent tip portions 101a and 10ra of the pair of left and right button holders 10L and 10R have a substantially V-shaped planar shape that gradually expands toward the opposite sides in a state of being opposed to each other in the radial direction of the button B. A pair of button pinching members 11L and 11R are attached.

  On the outer surface of the slide lid 8b of the fixed support base 8, an air cylinder 13 serving as an actuator that is extended and contracted with a fixed stroke in the sliding direction of the pair of left and right button holders 10L and 10R via the cylinder mounting base 12 is provided. As a configuration for supplying and discharging air, a ventilation member such as a tube, a joint, or a universal elbow is connected to the cylinder portion of the air cylinder 13. Since these ventilation members are the same as those of the conventional apparatus shown in FIGS. A cylinder guide 15 is fixed via a lock nut 14 to the tip of a movable rod 13 a that is driven to extend and contract in the sliding direction by the air cylinder 13.

The sleeve collar 16 rotatably inserted and held at the tip of the mounting base 9 has the swing lever 17 whose both ends can swing back and forth in opposite directions with the axis of the sleeve collar 16 as a fulcrum. Are fitted and held, and pins 18a and 18b projecting downward from near both ends of the swing lever 16 are concave engaging portions 101b formed on the upper surface of the middle portion of the pair of left and right button holders 10L and 10R. , 10rb, and the right button holder 10R is inserted with a roll pin 19 for connecting the button holder 10R and the cylinder guide 15 so as to be integrally movable, thereby extending and retracting the air cylinder 13. Accordingly, the expansion / contraction driving force is transmitted to the right button holder 10R via the roll pin 19, and the right button holder 10R is driven back and forth. While being reciprocally slid, the driving reciprocating sliding force of the right button holder 10R is transmitted to the left button holder 10L via the pin 18b, the swing lever 17, and the pin 18a, and the left button holder 10L becomes the right button holder. 10R is driven and reciprocated in the same amount and at the same speed in the left and right direction, so that the pair of button sandwiching members 11L and 11R come close to each other and separate from the state in which the button B is sandwiched and held from both radial sides. Button

  Then, shaft-like members 20L and 20R having the same length are connected to the central portions of the pair of button sandwiching members 11L and 11R opposite to the side that contacts the outer peripheral surface of the button B, respectively. The shaft-like members 20L and 20R are inserted and held in holes 10lc and 10rc formed in the tip portions 10la and 10ra of the pair of left and right button holders 10L and 10R so that the positions of the button holders 10L and 10R can be adjusted in the sliding direction. In addition, on the outer peripheral surfaces of these shaft-like members 20L and 20R, there are three axial positions corresponding to the diameters of the three large, medium and small buttons at the tip portions 10la and 10ra of the pair of left and right button holders 10L and 10R. A groove having a V-shaped cross section that prevents the rotation of the shaft-like members 20L and 20R by fitting the tip portions of the screw tools 21L and 21R such as screws screwed and held perpendicularly to the axis of the shaft-like members 20L and 20R. Tightening fixing gauge portions 22L and 22R are formed.

In the button holder device 6 configured as described above, when the button B to be sewn is a large button (having a diameter in the range of 25 to 32 mm), as shown in FIG. Adjust the slide position of the shaft-like members 20L and 20R of the pair of button sandwiching members 11L and 11R until the base portions enter the holes 101c and 10rc, and align the screw tools 21L and 21R with the gauge portions 22L and 22R. When the air cylinder 13 is driven to reciprocate with a fixed stroke by using the tightening and fixing, the pair of left and right button holders 10L and 10R are driven to reciprocate at the same amount and at the same speed in the opposite left and right directions . The button pinching members 11L and 11R operate to pinch and hold the large button B from both sides in the radial direction, or to release the pinching holding.

When the button B to be sewn is a middle button (having a diameter in the range of 15 to 24 mm), the shaft-like members 20L and 20R are connected to the left and right pairs as shown in FIG. The slide position is adjusted so that the pair of button pinching members 11L and 11R approach each other with respect to the button holders 10L and 10R, and the screw tools 21L and 21R are tightened and fixed in accordance with the other gauge portions 22L and 22R. As a result, when the air cylinder 13 is reciprocally driven at a constant stroke, the pair of left and right button holders 10L and 10R are reciprocally driven and reciprocated at the same amount and at the same speed in the opposite left and right directions . 11R operates to pinch and hold the middle button B from both sides in the radial direction, or to release the pinching.

Further, when the button B to be sewn is a small button (having a diameter in the range of 8 to 14 mm), the shaft-like members 20L and 20R are placed in a pair of left and right as shown in FIG. The slide position is adjusted so that the pair of button sandwiching members 11L and 11R are closest to each other with respect to the button holders 10L and 10R, and the screws 21L and 21R are tightened and fixed to the other gauge portions 22L and 22R. Thus, when the air cylinder 13 is reciprocally driven at a constant stroke, the pair of left and right button holders 10L and 10R are driven to reciprocate at the same amount and at the same speed in the opposite left and right directions. 11L and 11R operate to pinch and hold the small button B from both sides in the radial direction, or to release the pinching.

  As described above, the position of the shaft-like members 20L and 20R of the pair of button sandwiching members 11L and 11R is adjusted according to the change in the type (diameter) of the button B to be sewn, and the shaft-like members 20L are adjusted. From the pair of left and right button holders 10L and 10R and the pair of button sandwiching members 11L and 11R, only by performing a very simple operation such as tightening and fixing the screws 21L and 21R in accordance with the gauge portions 22L and 22R formed on the 20R. A set of button holders can be used as a holder device for three types of buttons, large, medium, and small, having different diameters. As a result, the number of parts constituting the button holder device 6 can be significantly reduced and the cost can be significantly reduced. In addition, since there are no parts that are not in a non-installed / unused state, there is no need to store and manage parts. There is no risk of loss or damage. Further, a large and troublesome work required for changing the button holder set is unnecessary, and for example, even when a plurality of types of buttons having different diameters are sewn on a single fabric, the efficiency of the whole buttoning work can be improved.

  In addition, a pair of left and right button holders can be obtained by tightening and fixing the screws 21L and 21R in accordance with the fastening and fixing gauge portions 22L and 22R formed on the shaft-like members 20L and 20R of the pair of button sandwiching members 11L and 11R, respectively. The slide stroke of 10L, 10R can be reliably changed to a stroke corresponding to the type (diameter) of the button B, and the pair of button pinching members 11L, 11R can be tilted as the shaft-like members 20L, 20R rotate. Since it can always be kept in a constant posture so that it does not occur, even if any type of button is to be sewn, the sewn button will not fall off or tilt with respect to the fabric due to vibration or shock of the sewing machine So that it can be held firmly and securely and stably. With it can be carried out.

  When the middle button B as shown in FIG. 5B is to be sewn and when the small button B as shown in FIG. 5C is to be sewn, the button pinching member 11L , 11R and a portion of the shaft-like members 20L, 20R are exposed between the tip portions 10la, 10ra of the button holders 10L, 10R. It is desirable to interpose sleeve-like spacing members 23L and 23R as shown in FIGS. When such spacing members 23L and 23R are interposed, it is possible to more easily and easily align the gauge portions 22L and 22R and the screw tools 21L and 21R when changing the type of button to be sewn. it can.

  Moreover, in the said embodiment, the V-shaped cross-sectional groove | channel in which the front-end | tip part of the screw tools 21L and 21R fits was formed as gauge part 22L and 22R formed in the outer peripheral surface of shaft-like member 20L and 20R. However, it may be a groove having a U-shaped cross section, and instead of the groove, a hole penetrating the shaft-like members 20L and 20R in the radial direction may be formed.

  In the above-described embodiment, an air cylinder is used as an actuator constituting the slide drive mechanism. However, a motor is used, and a pair of gears engaged with the pinion gear and the radially opposed portion of the pinion gear by forward and reverse rotation of the motor. A pair of left and right button holders 10L and 10R may be configured to be driven and slid in the same amount and at the same speed in opposite directions via a rack.

  Furthermore, the button holder device of the present invention can be applied not only to a button sewing machine but also to a root winding button sewing machine.

DESCRIPTION OF SYMBOLS 1 Sewing machine with button 8 Fixed support stand 10L, 10R Button holder 10la, 10ra The front end part of a holder 11L, 11R Button clamping member 13 Air cylinder (an example of an actuator)
17 Swing lever 20L, 20R Shaft-like member 21L, 21R Screw fixture 22L, 22R Gauge part B for fastening and fixing

Claims (2)

A pair of left and right button holders that are juxtaposed on a fixed support base and linearly reciprocally slidably supported in the left and right directions, and attached to the tip portions of the pair of left and right button holders and facing each other in the radial direction of the buttons The pair of left and right buttons so that the pair of button sandwiching members can be switched to a state in which the pair of button sandwiching members approach each other to sandwich and hold the button from both sides in the radial direction and a state in which the buttons are separated from each other to release the sandwiching of the button. a button holder device button sewing machine which comprises a, a slide driving mechanism for driving a reciprocating slide in the lateral direction opposite to the same amount and same speed together button holder,
The pair of button sandwiching members are formed in a substantially V-shaped planar shape that gradually expands toward the opposite side of the pair of button sandwiching members , and each of the pair of left and right button sandwiching members includes a pair of left and right buttons. A shaft-like member whose position can be adjusted in the same direction as the sliding direction of these button holders is connected to the tip of the holder, and a plurality of types of buttons having different diameters are provided on the outer peripheral surface of these shaft-like members. Of these, at a plurality of positions in the axial direction corresponding to at least two types of button diameters, concave portions having a V-shaped or U-shaped cross section into which the distal end portions of the screw tools screwed and held at the distal end portions of the pair of left and right button holders are fitted. groove or the screw member is fixed gauge unit fastening consists hole penetrating in the radial direction of the shaft-like member is formed, the side of the pair of buttons scissors member each shaft-like member, And a pair of button pinching members hold and hold at least two types of buttons under a reciprocating slide of a fixed stroke of the driving mechanism by adjusting the position of the screw and fixing the screw to the gauge part. A button holder device for a button-attached sewing machine, characterized in that it can be held and released. The slide drive mechanism is a rocking mechanism in which both ends are reciprocally swung in opposite directions with a central portion between the left and right button holders as a fulcrum as the actuator is driven to extend and contract at a fixed stroke. 2. The movable lever according to claim 1, wherein the pair of right and left button holders are reciprocally slid in the same amount and at the same speed in opposite directions in association with the reciprocal swing of the swing lever. Button holder device for sewing machines with buttons.

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