JPH09299640A - Cloth feed device for sewing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sewing machine cloth feed device capable of simplifying the assembly of a movable frame for supporting a cloth holding frame used to hold a processed cloth, or a guide mechanism for a movable member to feed the cloth. SOLUTION: This cloth feed device has a first movable frame 61 for supporting a plurality of cloth holding frames 17, a second movable frame 62 for movably supporting the first movable frame 61 and a pair of guide mechanisms 31 for movably guiding the second movable frame 62. Also, each of the guide mechanisms 31 has a guide member 35, a pair of guide parts formed on the guide member 35 and a pair of loosely rotating members engaged with the pair of the guide parts. As a result, the assembly of each guide mechanism 31 simply requires the guide member 35 to be oriented toward a first direction, and then the pair of loosely rotating members to be respectively engaged with the pair of guide parts. According to this construction, a work to adjust the parallelism of the pair of guide parts can be eliminated, and the assembly of the guide mechanisms 31 can be simplified.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cloth feeding device for a sewing machine having a bed, and more particularly to a set of a guide mechanism for feeding a movable frame or a movable member which supports a cloth holding frame for holding a work cloth. It is related to the one that makes the attachment simple.

[0002]

2. Description of the Related Art Conventionally, as a cloth feeding device of an industrial multi-head sewing machine applied to pattern sewing or embroidery sewing, an X having a plurality of cloth holding frames for holding a work cloth is generally attached.
An X-direction feed mechanism that feeds and drives a movable frame that extends in a direction (for example, the left-right direction) in the X-direction, and a Y-direction feed mechanism that feeds and drives the movable frame in the Y-direction (for example, the front-rear direction) that is orthogonal to the X-direction. Is provided. These X-direction feeding mechanism and Y-direction feeding mechanism are provided with a guide mechanism for movably guiding the carriage connected to the movable frame in the X-direction and the Y-direction, and the carriage is driven by the driving force received from the drive motor to move the X-direction. A driving force transmission mechanism for driving in the Y direction and the Y direction is provided respectively.

In Japanese Utility Model Publication No. 1-39744, an X-direction feed mechanism for feeding and driving a rectangular frame-shaped moving frame in the X direction and a Y-direction feed mechanism for feeding and driving in the Y direction are provided. In the direction feed mechanism, guide rails are attached in parallel to two upper ends of a horizontal frame extending in the X direction, and formed on each guide rail on a lower connecting plate arranged immediately above these guide rails. A pair of guide rollers that are rollably engaged with the guide grooves are pivotally supported,
The moving frame is guided in the X direction through an interlocking mechanism including these guide rails and guide rollers, and each interlocking mechanism is fed in the X direction by a driving force transmission mechanism including a transmission belt driven by the first control motor. A cloth feeding device in an embroidery sewing machine which is driven is described.

[0004]

[Problems to be Solved by the Invention]
In the cloth feeding device in the embroidery sewing machine described in Japanese Patent Publication No. 44, an X-direction feeding mechanism for feeding and driving the moving frame in the X direction and a Y-direction feeding mechanism for feeding and moving the moving frame in the X direction are provided.
In the interlocking mechanism of the direction feed mechanism, a pair of guide rollers formed on a pair of guide rails mounted parallel to the horizontal frame are engaged with a pair of guide rollers pivotally supported on the lower connecting plate to move the moving frame. Since it is designed to guide in the X direction via the interlocking mechanism, it is necessary to adjust the pair of guide rails accurately and parallel to the Y direction by using a gauge or a jig. There is a problem that the mounting of the guide mechanism including the guide rail becomes complicated.

It is an object of the present invention to provide a cloth feeding device for a sewing machine which can simplify the assembly of a movable frame supporting a cloth holding frame for holding a work cloth and a guide mechanism for feeding the movable member. It is to be.

[0006]

According to a first aspect of the present invention, there is provided a cloth feeding device for a sewing machine, wherein a plurality of cloth holding frames for holding a work cloth to be sewn are synchronized in a multi-head sewing machine having a plurality of sewing mechanisms. In the cloth feeding device that independently feeds the first direction parallel to the bed and the second direction orthogonal to the first direction,
A first movable frame that supports a plurality of cloth holding frames and extends in the second direction, a second movable frame that supports the first movable frame so as to be movable in the second direction, and a second movable frame that extends in the second direction, and a second movable frame. A pair of guide mechanisms for movably guiding both ends of the frame in the first direction, each of the guide mechanisms extending in the first direction, and a parallel member formed at both end portions of the guide members. And a pair of idling members that engage with the pair of guide portions and roll around an axis orthogonal to the first direction.

To explain the operation, a plurality of cloth holding frames are supported by the first movable frame extending in the second direction parallel to the bed and orthogonal to the first direction, and the second movable frame extending in the second direction is The first movable frame is movably supported in the second direction. The pair of guide mechanisms movably guides both ends of the second movable frame in the first direction. Here, in each guide mechanism, a pair of parallel guide portions are formed at both side ends of the guide member extending in the first direction, and a pair of idle members engaging with the pair of guide portions, respectively. Guides the second movable frame in the first direction while rolling around an axis orthogonal to the first direction.

That is, since a pair of parallel guide portions are formed at both end portions of the guide member, when assembling each guide mechanism, the guide members are arranged in the first direction, and It is only necessary to engage the pair of idler members with the pair of guide portions, respectively, and the work of adjusting the parallelism of the pair of guide portions can be omitted.
The assembly of the guide mechanism can be simplified. Claim 2
In the invention of claim 1, the cloth feeding device of the sewing device of
The guide member is composed of a horizontally oriented strip plate, and each of the guide portions at the end portions in the width direction of the strip plate projects outward between a pair of vertical plane-shaped horizontal regulating portions and these horizontal regulating portions. And a vertical direction restricting portion.

Explaining the operation, the same operation as in claim 1 is achieved, but the guide member is a horizontal strip.
A pair of vertical plane-shaped horizontal regulating portions and vertical regulating portions protruding outward between the horizontal regulating portions are formed on each of the guide portions at the widthwise ends of the strip. Therefore, the pair of free-moving members are brought into contact with the pair of upper and lower horizontal restricting portions and the pair of vertical restricting portions so that both end portions of the second movable frame are horizontally aligned. It can be supported both vertically.

According to a third aspect of the present invention, in the cloth feeding apparatus of the sewing machine according to the second aspect of the invention, each of the idle members is a pair of idle wheels rotatable about a vertical axis and separated vertically. It is composed of a pair of idler wheels that are brought into contact with the pair of horizontal restricting portions. Explaining the operation, the same operation as in claim 2 is achieved, but each idle member is rotatable about a vertical axis and is vertically spaced apart from each other to make contact with a pair of horizontal regulating portions. Since it is composed of the idler wheel, the structure of the idler member can be simplified and the movement for feeding the cloth can be facilitated.

According to a fourth aspect of the present invention, there is provided a cloth feeding device for a sewing device, wherein the cloth holding frame for holding the work cloth to be sewn in the sewing device is independently fed in a first direction and a second direction orthogonal to each other. A guide mechanism for movably guiding the movable member supporting the frame in the first direction or the second direction is provided with a guide member extending in the first direction or the second direction, and a parallel formed on both side end portions of the guide member. And a pair of idler members that engage with the pair of guide portions and roll around an axis orthogonal to the first direction or the second direction.

The operation will be described. The movable member supporting the cloth holding frame is guided by the guide mechanism so as to be movable in the first direction or the second direction, and in the guide mechanism, the movable member extends in the first direction or the second direction. A pair of parallel guide portions are formed on both end portions of the guide member, and the pair of idler members engaged with the pair of guide portions respectively have an axial center orthogonal to the first direction or the second direction. The movable member in the first direction or the second direction while rolling
I will guide you in the direction. That is, since a pair of parallel guide portions are formed at both end portions of the guide member, when the guide mechanism is assembled, the guide member is arranged in the first direction or the second direction. It is only necessary to engage the pair of idling members with the pair of guide portions, and the adjustment work for adjusting the parallelism of the guide portions can be omitted, and the assembly of the guide mechanism can be simplified.

According to a fifth aspect of the present invention, there is provided the cloth feeding device for the sewing machine according to the fourth aspect, wherein the guide member is a horizontal plate, and each guide portion at the widthwise end of the plate has a vertical plane. It has a pair of upper and lower horizontal direction restricting portions and a vertical direction restricting portion protruding outward between these horizontal direction restricting portions. Describing the operation, the guide member is composed of a horizontally oriented strip plate, and each of the guide portions at the widthwise end portions of the strip plate has a pair of vertical plane-shaped horizontal regulating portions and these horizontal regulating portions. Since it has a vertical direction regulation part which protrudes outside between, the same operation as the 2nd aspect is produced. Other than that, the same operation as in claim 4 is achieved.

According to a sixth aspect of the present invention, in the cloth feeding apparatus of the sewing apparatus according to the fifth aspect of the invention, each of the idle members is a pair of idle wheels rotatable about a vertical axis, and is separated vertically. It is composed of a pair of idler wheels that are brought into contact with the pair of horizontal restricting portions. Explaining the action, each idle member is
Since it is composed of a pair of idler wheels which are rotatable around a vertical axis and are vertically separated from each other and abutting against a pair of horizontal regulating portions, the same effect as that of claim 3 is achieved. Other than that, the same operation as in claim 5 is achieved.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. The present embodiment is a case where the present invention is applied to a cloth feeding device of a multi-head embroidery sewing machine including three embroidery sewing machines. The multi-head embroidery sewing machine M will be described. As shown in FIG. 1, a common support frame 2 extending in the left-right direction is provided upright on the rear side of the upper surface of a base frame 1 extending in the left-right direction. The three head portions 4 to 6 are arranged side by side in the left-right direction at predetermined intervals, and in correspondence with each of the head portions 4 to 6, in the Y direction configured in the bed units 10 to 12 having an independent structure. Cylindrical bed parts 7-9 extending
The rear end portions of the above are respectively supported by the base frame 1.

That is, three multi-needle type embroidery sewing machines (sewing machines) which are composed of heads 4 to 6 provided on the support frame 2 and bed units 10 to 12 corresponding to these heads 4 to 6. M1 to M3 (corresponding to the mechanism) are arranged in parallel.
Twelve needle bars (not shown) arranged in a row in the left-right direction are vertically movably supported at the front end portions of the head portions 4 to 6 of the embroidery sewing machines M1 to M3, respectively. The needle bar cases 14 that swingably support the balance 13 are movably supported in the left and right directions. The needle bar cases 14 are simultaneously moved by a needle bar changing mechanism driven by a needle bar changing motor (not shown). The thread color of the embroidery thread used for embroidery sewing can be changed at the same time by moving in the left-right direction.

A base plate 15 is horizontally arranged on the upper side of the base frame 1, and the bed units 10 to 1 are arranged on the upper side of the base plate 15.
Work table 16 so that it is flush with the upper surface of 2
Is horizontally arranged, and the X movable frame 60 extending in the left-right direction, to which the three cloth holding frames 17 are attached, is moved in the Y direction (corresponding to the first direction, the front-rear direction) at the left and right ends of the base plate 15. Each Y direction feed mechanism 30 is provided. By the way, an up-and-down drive mechanism provided in each embroidery sewing machine M1 to M3 and vertically moving a needle bar via a main shaft by a sewing machine motor (not shown) and one of twelve needle bars are selectively driven up and down. Therefore, the needle bar jump mechanism for jumping the needle bar to the upper position of the needle is the same as that of a normal embroidery sewing machine, and therefore its description is omitted.

Next, the bed units 10 to 12 will be described with reference to FIGS. 10 to 11. Here, each of the three bed units 10 to 12 has an independent structure, and a similar unit module 21 is provided at the front end portion thereof. However, since only the bed unit 11 is provided with an auxiliary Y-direction feed mechanism 80 therein, as will be described later, the bed unit 11 is integrally extended to the rear end side of the rear portion and is longer than the other bed units 10 and 12. Has been formed. Therefore, the central bed unit 11
Will be described.

A bed case 20 having a substantially U-shaped cross section having a predetermined length in the front-rear direction is fixed to the base frame 1 at the rear half thereof, and a front end portion of the bed case 20 is
The unitized shuttle module 21 is detachably fixed, and the upper side of the bed case 20 is covered with the needle plate 26 at its front end portion, and is also covered with the cover plate continuous with the needle plate 26 over the whole. ing. Hook module 2
1, the full rotary hook 22 and the rotary hook drive motor 23 are attached to a mounting block (not shown), and the rotary hook shaft 24 fixed to the full rotary rotary hook 22 is attached to the rotary rotary hook 22 via a coupling 25. Is connected to the drive shaft of.

As a result, the rotation of the shuttle drive motor 23 causes the full-rotary shuttle 22 to be rotationally driven via the shuttle shaft 24 independently of the sewing machine motor. Where other bed units 1
A hook module 21 similar to the hook module 21 of the bed unit 11 is also incorporated in each of the front end portions of 0 and 12. That is, the elevating and lowering drive mechanisms provided in the embroidery sewing machines M1 to M3 are respectively driven by the sewing machine motors via the main shafts, the needle bars of the embroidery sewing machines M1 to M3 are synchronously moved up and down, and the bed units are also moved. In the shuttle module 21 of 10 to 12, each shuttle driving motor 23 is driven in synchronization with the sewing machine motor, and each cloth holding frame 17 cooperates with the Y-direction feeding mechanism 30 and the X-direction driving mechanism 70 as described later. X direction (corresponding to the second direction, left and right direction) and Y
Each cloth holding frame 1 is driven to move in synchronization with the direction.
A similar embroidery pattern is simultaneously formed on the work cloth held by 7.

Next, cloth feed for independently driving and driving the X movable frame (corresponding to a movable member) 60 that supports the three cloth holding frames 17 corresponding to the embroidery sewing machines M1 to M3. The device will be described. First, a pair of Y-direction feed mechanisms 30 for feeding and driving the X movable frame 60 in the Y direction will be described with reference to FIGS. However,
Since these Y-direction feed mechanisms 30 have the same configuration, the right Y-direction feed mechanism 30 will be described. The Y-direction feed mechanism 30 includes a guide mechanism 31 that guides the movement of the Y drive frame 53 that supports the right end portion of the X movable frame 60 in the Y direction, and a drive force transmission that drives the Y drive frame 53 in the Y direction. The guide mechanism 31 will be described first.

Above the base 34 extending in the front-rear direction, which is fixed to the right end of the base plate 15 with a bolt 33,
The guide member 35 having a predetermined width and formed of a horizontal plate is Y
The guide members 35 are provided in a horizontal posture in a predetermined direction, are provided at predetermined intervals in the front-rear direction, and are fixed by screws to a plurality of support blocks 36 attached to the base 34. Immediately above the guide member 35, a Y carriage 37 made of a plate member having a substantially rectangular shape in a plan view is horizontally arranged. The Y carriage 37 has guide portions 35a and 35b on both left and right sides of the guide member 35. Two pairs of idling members 38, 40 rolling around the vertical axis are engaged with each other.

That is, guide portions 35a and 35b are formed at the left and right ends of the guide member 35 over the entire length thereof, and the left guide portion 35a has a pair of vertical direction horizontal regulating portions 35c in a vertical plane shape. And a vertical direction restricting portion 35d having a substantially triangular shape in a side view protruding outward is formed between the horizontal direction restricting portions 35c, and a pair of upper and lower horizontal direction restricting portions is similarly formed on the right guide portion 35b. The portion 35c and the vertical direction restricting portion 35d are formed. Then, the Y carriage 37
Two idle members 38 that engage with the guide portion 35 a are attached to the guide member 35 a via their pivot shafts 39, and the guide portion 3 a
Two idle members 40 engaging with 5b are mounted via their pivots 41.

These four idling members 38 and 40 are constructed in the same manner. Explaining the idling member 40, the upper idler wheel 40a has a lower end portion above the vertical regulating portion 35d. The tapered surface 40b is formed so as to abut a part of the
At its upper end, a tapered surface 40e is formed so as to come into contact with a part of the lower side of the vertical regulation portion 35d. However, the center of the pivot shaft 41 of the right idler member 40 is eccentric with respect to the center of these idler wheels 40a and 40d, and by rotating the pivotal shaft 41, the idle member 40 is rotated.
The position of the guide portion 35b can be adjusted.

That is, in each idle member 38, 40, the tapered surface 40b of the upper idle wheel 40a abuts a part of the upper side of each vertical direction restricting portion 35d and the lower idle wheel 40d.
The taper surface 40e of the abutting portion abuts a part of the lower side of each vertical direction regulating portion 35d, so that the Y carriage 37 is guided by the guide member 3
5, the outer peripheral surface 40c of the upper idler wheel 40a is supported in the vertical direction with respect to 5, and the upper horizontal restricting portion 35c.
The outer peripheral surface 40 of the lower idler wheel 40d that abuts on the outside from the outside.
When the f is brought into contact with the lower horizontal restricting portion 35c from the outside, the Y carriage 37 can be guided and moved in the Y direction along the guide member 35.

Next, the driving force transmission mechanism 32 will be described. Each of the pair of driven pulleys 45 provided on the front side of the guide member 35 and immediately outside thereof is a pivot support 46 having a substantially U shape in plan view. The guide member 35 is rotatably supported.
A pair of drive pulleys 4 provided on the rear side and immediately outside
Each of 7 is fixed to a drive shaft 50 connected to a Y-direction drive motor 48, and the drive shaft 50 includes a pair of pivot support fittings 51.
It is pivotally supported by. The timing belt 52 is wound around the drive pulley 47 and the corresponding driven pulley 45.

The pressing plate 54 and the screw 5 are attached to the left side mounting portion 53a of the Y drive frame 53 which is attached to the Y carriage 37 so as to cover the Y carriage 37 and which is substantially C-shaped in a front view.
5, one end of the left timing belt 52 is fixed, and similarly, one end of the right timing belt 52 is also fixed to the right mounting portion 53b by the pressing plate 54 and the screw 55. By the way, base plate 1
A Y-direction drive motor 48 is disposed in the substantially central portion of the rear end of the drive shaft 5, and a pair of drive shafts 49 and 50 connected to the Y-direction drive motor 48 extend in the left-right direction, and the left end of the drive shaft 49. Is a pair of drive pulleys 47 of the left Y-direction feed mechanism 30.
Further, the right end portion of the drive shaft 50 is fixed to the pair of drive pulleys 47 of the right Y-direction feed mechanism 30.

When the Y-direction drive motor 48 is driven, the pair of timing belts 52 synchronously rotate via the drive shaft 50 and the pair of right side drive pulleys 47, and the right side belts connected to these timing belts 52 are rotated. The Y drive frame 53 moves in the Y direction via the guide mechanism 31, and in the same manner, the pair of timing belts 52 synchronously rotate via the drive shaft 49 and the pair of left side drive pulleys 47. Left Y drive frame 5 connected to 52
3 synchronizes with the Y drive frame 53 on the right side, and the guide mechanism 3
1 to move in the Y direction.

By the way, as shown in FIG. 2 to FIG. 3 and FIG. 5 to FIG. 6, a substantially plate-shaped second movable frame 6 extending in the left-right direction.
The left end of 2 is fixed on the left Y drive frame 53, and the right end thereof is fixed on the right Y drive frame 53. The first movable frame 61, which is a plate member that extends in the left-right direction, is placed on the horizontal sliding portion 62a of the front half of the second movable frame 62 so as to be slidable in the left-right direction. Frame support member 1 attached with
It is designed to support 8. A pair of left and right guide rails 63 are linearly fixed in the X direction on the rear side of the sliding portion 62a of the second movable frame 62, and the guide rails 63 engage with each guide rail 63 in a straddling state. A matching X carriage 64 is provided slidably. Here, the X movable frame 60 is constituted by the first movable frame 61 and the second movable frame 62.

Further, the left and right ends of the connecting plate 65, which is a plate member having a rectangular shape in plan view, whose rear end is fixed to each X carriage 64, are bolted to the first movable frame 61 via block-shaped spacers 66. They are fixed at 67 respectively. That is, each X carriage 64 is movable in the X direction along each guide rail 63, and each first movable frame 61 connected to these X carriages 64 via the connecting plate 65.
However, it can move in the X direction together with the X carriage 64 on the sliding portion 62 a of the second movable frame 62. next,
The two sets of X-direction drive mechanisms 70 provided on the second movable frame 62 will be described with reference to FIGS. 2 to 3 and 5 to 6.

An X-direction drive motor 72 is mounted downward on a mounting member 71 fixed to the second movable frame 62 corresponding to the outer end of the guide rail 63, and is driven by a drive shaft 72a of the X-direction drive motor 72. A pulley 73 is fixed, and a driven pulley 74 corresponding to the inner end of the guide rail 63 is pivotally supported so as to be rotatable about a vertical axis. And these drive pulleys 7
A timing belt 75 is stretched over 3 and the driven pulley 74, and one end portion of the timing belt 75 is connected to a fixing portion 65a cut through the connecting plate 65 by a fixing plate 76 and a screw 77.

When the X-direction drive motor 72 is driven, the timing belt 75 rotates via the drive pulley 73 and the driven pulley 74, and each X carriage is connected via the connecting plate 65 connected to the timing belt 75. 64 moves in the X direction along the guide rails 63, and as described above, each first movable frame 61 moves together with the X carriage 64 in the X direction.
It is driven to move in the direction. At this time, the Y-direction drive motor 4
When 8 is driven, the Y drive frames 53 on the left and right sides move in the Y direction in synchronization with each other, thereby feeding and driving the plurality of cloth holding frames 17 independently in the X direction and the Y direction. .

Next, an auxiliary Y-direction feeding mechanism 80, which is provided inside the central base unit 11 and which supports the approximately central portion of the X movable frame 60 and drives the feeding in the Y direction, will be described with reference to FIGS. Explain. The auxiliary Y-direction feed mechanism 80 includes a guide mechanism 81 that guides the movement of the Y carriage 85 that supports the central portion of the X movable frame 60 in the Y direction, and a driving force transmission mechanism that drives the Y carriage 85 in the Y direction. The guide mechanism 81
Let's start with.

In the bed case 20 of the base unit 11, guide members 83 extending from the rear end to the vicinity of the shuttle module 21 are arranged, and the front and rear ends thereof are fixed to the side walls of the bed case 20 by the support fittings 84, respectively. Has been done. Then, the support portion 85a of the Y carriage 85 externally fitted to the guide member 83 so as to be movable back and forth extends rightward, and the tip portion of the support portion 85a is attached to the lower end of the second movable frame 62 and the support thereof is provided. The slit 2 formed on the side wall of the bed case 20 in the middle of the portion 85a
It is supported by sliding contact with 0a.

Next, the driving force transmission mechanism 82 for driving the Y carriage 85 will be explained.
On the side wall of the bed case 20 corresponding to the first driven pulley 8
6 is rotatably supported, the second driven pulley 87 is rotatably supported at the rear end of the bed case 20, and the tension pulley 8 is urged by a spring (not shown).
8 is rotatably supported, and a drive pulley 89 is fixed to the drive shaft 50. The wire 90 whose one end is fixed to the rear end of the Y carriage 85 extends rearward and is engaged with the second driven pulley 87, is wound around the drive pulley 89 a plurality of times, and is engaged with the tension pulley 88. After being engaged with the first driven pulley 86, the other end is fixed to the front end of the Y carriage 85.

That is, in the Y carriage 85 fitted on the guide member 83, the Y direction drive motor 48 is driven, the drive pulley 89 is rotated, and the wire 90 is driven.
The center portion of the second movable frame 62, which is driven and driven in the Y direction along the guide member 83 in synchronization with the pair of left and right Y driving frames 53, is supported by the Y carriage 85. It is driven at the same time as the parts and by the same movement amount.

The operation of the cloth feeding device of the multi-head embroidery sewing machine M will be described. In the multi-head embroidery sewing machine M, three embroidery sewing machines M1 to M3 are arranged side by side, and on the upper side of the base frame 1, a first cloth supporting frame 17 is supported.
An X movable frame 60 including a movable frame 61 and a second movable frame 62 that supports the first movable frame 61 by a sliding portion 62a so that the first movable frame 61 is movable in the X direction is arranged, and is arranged above the base frame 1. The Y-direction feed mechanism 30 is provided at each of the left and right ends of the base plate 15 provided, and the left and right ends of the second movable frame 62 are provided at the left and right ends.
It is supported by the Y drive frame 53 of the pair of Y-direction feed mechanisms 30.

Here, in the guide mechanism 31 provided in each Y-direction feed mechanism 30, there is provided a guide portion having a pair of vertical plane-shaped horizontal regulating portions 35c and a protruding vertical regulating portion 35d. Guide members 35 having 35a and 35b formed at the left and right ends are arranged in the Y direction, and a pair of idle members 38 and 40 engage with the pair of guide portions 35a and 35b, respectively, as described above. ing. Then, when the Y-direction drive motor 48 is driven, the drive shafts 49, 50 are rotationally driven, and in the Y-direction feed mechanism 30 on the right side, the pair of timing belts 52 are synchronously rotated, and the Y-drive frame 53 on the right side is moved. While moving in the Y direction via the guide mechanism 31, the pair of timing belts 52 in the left Y-direction feed mechanism 30 rotate synchronously so that the left Y drive frame 53 synchronizes with the right Y drive frame 53. Guide system 3
1 to move in the Y direction.

Thus, the first movable frame 61 for supporting the three cloth holding frames 17, and the first movable frame 61.
In the pair of guide mechanisms 31 for movably supporting in the Y direction the left and right ends of the X movable frame 60 including the second movable frame 62 for movably supporting the X in the vertical direction. A guide member 35 having guide portions 35a and 35b having a horizontal regulation portion 35c and a protruding vertical regulation portion 35d formed at both left and right ends is arranged in the Y direction, and a pair of these guide portions 35a, Since a pair of idle members 38 and 40 are engaged with 35b, respectively, as described above,
When assembling each guide mechanism 31, the guide member 35 is arranged in the Y direction, and the pair of guide portions 35a and 35b are arranged.
It is only necessary to engage the pair of idling members 38 and 40 with each other, and the work of adjusting the parallelism of the pair of guide portions 35a and 35b can be omitted, and the assembly of the guide mechanism 31 can be simplified. it can.

Further, each guide member 35 is a strip plate in a horizontal posture, and the guide portions 35a, 35 at the end portions in the width direction of the strip plate.
In b, a pair of vertical regulating parts 35c having a vertical plane shape
And a vertical direction restricting portion 35d protruding outward between the horizontal direction restricting portions 35c. The free-moving members 38 and 40 are rotatable about the vertical axis and are vertically separated from each other. Since the pair of idle wheels 40a and 40d are in contact with the pair of horizontal restricting portions 35c, the pair of idle members 38 and 40 are brought into contact with the pair of upper and lower horizontal restricting portions 35c. By contacting the pair of vertical direction restricting portions 35d, both ends of the second movable frame 62 can be supported in both the horizontal direction and the vertical direction, and
The structure of the idle members 38, 40 can be simplified and the movement for feeding the cloth can be facilitated.

By the way, as shown in FIG. 13, in a single-head type embroidery sewing machine MA having one head portion and a cylindrical bed portion 95, one cloth holding frame 17A is arranged in the X direction and the Y direction. It may be configured to be applied to a cloth feeding device that feeds cloth independently. That is, the cloth holding frame 17A is arranged so as to be located on the upper surface of the cylindrical bed unit 95, and the cloth holding frame 17A is provided on the left and right sides of the cloth holding frame 17A via the connecting plate 96 in a pair in the Y direction. The Y-direction feed mechanism 30A is connected to each of the Y drive frames,
The front and rear ends of the pair of Y-direction feed mechanisms 30A are connected to the X drive frames of the pair of X-direction feed mechanisms 30B provided immediately below. Here, the pair of Y-direction feed mechanisms 30A and the pair of X-direction feed mechanisms 30B are configured similarly to the Y-direction feed mechanism 30 of the above-described embodiment.

Then, a Y-direction drive motor (not shown) drives the Y-drive frames of the pair of Y-direction feed mechanisms 30A in the Y-direction, respectively, and an X-direction drive motor (not shown) feeds the pair of X-direction feeds. Since the X drive frames of the mechanism 30B are respectively driven in the X direction, the cloth holding frame 17A is independently fed in the X direction and the Y direction, and the embroidery pattern is formed on the work cloth held by the cloth holding frame 17A. To be done. That is, also in this case, the same effect as that of the above-described embodiment can be obtained.

Incidentally, a pair of parallel guide portions 35a, 3 having inwardly recessed portions or groove portions at both end portions of the guide member 35.
5b and a pair of idle members 38 and 40 that engage with a pair of parallel guide portions 35a and 35b formed at both ends of the guide member 35 are integral type having idle wheels. With respect to the above-described embodiment, various modifications may be made based on existing technology and technology obvious to those skilled in the art. Further, it is needless to say that the present invention can be applied to a cloth feeding device of various sewing devices such as a single-head or multi-head pattern sewing machine having a flat bed.

[0044]

According to the cloth feeding device of the sewing apparatus of the first aspect, the first movable frame for supporting the plurality of cloth holding frames, and the second movable frame for movably supporting the first movable frame, Guide the second movable frame movably 1
A pair of guide mechanisms, each guide mechanism having a guide member, a pair of guide portions formed on the guide member, and a pair of idle members engaging with the pair of guide portions. Therefore, when assembling each guide mechanism, it suffices to dispose the guide member in the first direction and engage the pair of guide members with the pair of idle members. The work of adjusting the parallelism of the guide portion can be omitted, and the assembling of the guide mechanism can be simplified.

According to the cloth feeding device of the sewing device of the second aspect, the same effect as that of the first aspect can be obtained, but each guide member is a horizontally oriented strip plate, and each of the widthwise end portions of the strip plate is provided. Since the guide portion is formed with a pair of vertical plane-shaped horizontal regulating portions and a vertical regulating portion projecting outwardly between the horizontal regulating portions, a pair of idle members are provided. , Both end portions of the second movable frame can be supported both in the horizontal direction and in the vertical direction by abutting against the pair of upper and lower horizontal regulating portions and the pair of vertical regulating portions. it can.

According to the cloth feeding device of the sewing device of the third aspect, the same effect as that of the second aspect can be obtained, but each idle member is
Since it is composed of a pair of idler wheels which are rotatable about a vertical axis and are vertically separated from each other and abutted against a pair of horizontal direction regulating portions, the structure of the idler member can be simplified and at the same time the cloth feed can be performed. The movement for the purpose can be facilitated.

According to the cloth feeding device of the sewing apparatus of the fourth aspect, the guide mechanism for movably guiding the movable member supporting the cloth holding frame is formed at the guide member and both side ends of the guide member. Since it has a pair of guide portions and a pair of idle members that engage with the pair of guide portions, when assembling each guide mechanism, the guide members are directed in the first direction or the second direction. It is only necessary to engage the pair of idler members with the pair of guide portions, and the work of adjusting the parallelism of the pair of guide portions can be omitted, and the guide mechanism can be easily assembled. Can be converted.

According to the cloth feeding device of the sewing apparatus of the fifth aspect, the same effect as that of the fourth aspect is obtained, but the guide member is a horizontal strip plate, and the guides at the widthwise end portions of the strip plate are provided. Since the section has a pair of vertical plane-shaped horizontal regulating sections and a vertical regulating section that projects outward between the horizontal regulating sections, the same effect as that of claim 2 is achieved. According to the cloth feeding device of the sewing apparatus of the sixth aspect, the same effect as that of the fifth aspect can be obtained, but each idle member is rotatable about the vertical axis and is vertically separated to form a pair of horizontal members. Since the pair of idle wheels are in contact with the direction restricting portion, the same effect as in claim 3 is obtained.

[Brief description of drawings]

FIG. 1 is a perspective view of a multi-head embroidery sewing machine.

FIG. 2 is a main part plan view showing a work table and a bed unit.

FIG. 3 is a partial front view of the multi-head embroidery sewing machine.

FIG. 4 is a partially enlarged plan view of FIG.

5 is a vertical sectional side view taken along the line AA of FIG.

FIG. 6 is a vertical sectional side view taken along line BB of FIG.

FIG. 7 is a partially enlarged plan view of a Y-direction feeding mechanism.

FIG. 8 is a vertical sectional front view taken along line CC of FIG.

FIG. 9 is a schematic perspective view of a guide member and a free rotation member engaged with the guide member.

FIG. 10 is a vertical sectional side view taken along the line D-D in FIG.

FIG. 11 is a partially enlarged plan view of the central bed unit.

FIG. 12 is a vertical sectional front view taken along line EE of FIG.

FIG. 13 is a schematic perspective view of a cloth feeding device according to a modification.

[Explanation of symbols]

 M multi-head embroidery sewing machine 2 support frame 10-12 bed unit 17 cloth holding frame 30 Y direction feed mechanism 31 guide mechanism 35 guide member 35a guide portion 35b guide portion 35c horizontal direction regulation portion 35d vertical direction regulation portion 37 Y carriage 39, 40 Idling member 40a, 40d Idling wheel 61 First movable frame 62 Second movable frame

Claims (6)

[Claims] 1. In a multi-head sewing device having a plurality of sewing mechanisms, a plurality of cloth holding frames for holding a work cloth to be sewn are synchronized with a first direction parallel to the bed and orthogonal to the first direction. In the cloth feeding device that independently feeds the cloth in the second direction, the plurality of cloth holding frames are supported, and the first movable frame that extends in the second direction and the first movable frame are movably supported in the second direction. A second movable frame extending in the second direction and a pair of guide mechanisms for movably guiding both ends of the second movable frame in the first direction are provided, and each guide mechanism extends in the first direction. A guide member, a pair of parallel guide portions formed at both end portions of the guide member, and a pair of guide portions engaged with the guide member to roll around an axis perpendicular to the first direction. Sewing apparatus having a pair of idle members Cloth feed device. 2. The guide member is composed of a horizontally oriented strip plate, and each of the guide portions at the widthwise end portions of the strip plate has a pair of vertical plane-shaped horizontal regulating portions and a pair of the horizontal regulating portions. The cloth feed device for a sewing device according to claim 1, further comprising a vertical direction restricting portion that protrudes outwardly between the two. 3. A pair of idler wheels, wherein each idler member is a pair of idler wheels rotatable about a vertical axis, and a pair of idler wheels that are vertically spaced apart and abut against a pair of horizontal direction regulating portions. The cloth feeding device of the sewing device according to claim 2, wherein the cloth feeding device comprises a rolling wheel. 4. A cloth feeding device that independently feeds a cloth holding frame that holds a work cloth to be sewn in a sewing device in a first direction and a second direction that are orthogonal to each other. One direction or second
A guide mechanism for movably guiding in a direction, a guide member extending in the first direction or the second direction, a pair of parallel guide portions formed at both end portions of the guide member, and the pair of guide portions. And a pair of idle members that are engaged with each other and roll around an axis that is orthogonal to the first direction or the second direction. 5. The guide member is composed of a horizontally oriented strip plate, and each of the guide portions at the widthwise end portions of the strip plate has a pair of vertical plane-shaped horizontal regulating portions and these horizontal regulating portions. The fabric feed device for a sewing device according to claim 4, further comprising a vertical direction restricting portion that protrudes outwardly between the two. 6. A pair of idler wheels, wherein each idler member is a pair of idler wheels rotatable around a vertical axis, and a pair of idler wheels that are vertically spaced apart and abut against a pair of horizontal direction regulating portions. The cloth feeding device of the sewing device according to claim 5, wherein the cloth feeding device comprises a rolling wheel.