JPH08238391A - Clamp type holding frame for cloth to be sewn - Google Patents

Abstract

PURPOSE: To provide a clamp type holding frame for cloth to be sewn with which cloth to be sewn can be easily, surely and efficiently held while being spread. CONSTITUTION: This clamp type holding frame for cloth to be sewn is provided with a frame-shaped base frame 21 and a pressing frame 30 for pressing cloth 21 to be sewn onto the base frame 21, and the pressing frame 30 is linked with the base frame 21 by a linking mechanism so as to be freely swung up and down. The base frame 21 is provided with an actuator 50 for selectively driving the pressing frame 30 through the linking mechanism to the pressing and fixing position to press that pressing frame onto the base frame 21 and a fixture cancel position. When holding the cloth while spreading it, the pressing frame 30 is driven to the fixture cancel position by the actuator 50 and afterwards, the cloth to be sewn is positioned on the base frame while spreading it with both hands. Then, when the pressing frame 30 is driven to the pressing and fixing position by the actuator 50, the cloth to be sewn can be held while being spread.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp-type sewn cloth holding frame, and more particularly to a device for driving a holding frame by an actuator.

[0002]

2. Description of the Related Art Conventionally, a sewn cloth holding frame for holding the sewn cloth in a stretched state has been put to practical use in order to perform embroidery or pattern sewing on the sewn cloth. For such a sewn cloth holding frame, a clip method of fixing the sewn cloth to the base frame by a clip and a clamp method of pressing and fixing the sewn cloth between the base frame and the press frame have been put into practical use. In the clip method, generally, a protruding portion is provided on the outer edge portion of a frame-shaped base frame, and a plurality of clips are fitted onto the protruding portion from above the cloth to be sewn to hold the cloth to be sewn. It is configured to do. However, with this clip-type sewn cloth holding frame, when the cloth to be sewn is removed from the sewn cloth holding frame, there are traces of the clip. There is a problem such as not being able to fit in.

On the other hand, the clamp type sewn cloth holding frame is constructed so that it does not leave a mark of a clip on the sewn cloth and can be applied to a sewn cloth which is thick and difficult to bend, and generally has a frame-shaped base. A frame, a pressing frame for pressing the cloth to be sewn onto the base frame, and a clamp means for pressing and fixing the pressing frame to the base frame in a releasable manner are provided. With this clamp-type sewn fabric holding frame, after the sewn fabric is positioned on the base frame, the clamp means is manually operated to press and fix the presser frame to the base frame to hold the sewn fabric. It is configured to do.

[0004]

However, in the above clamp type cloth holding frame for sewing, since the clamp means is manually operated, the work load is increased. Moreover, since it is necessary to operate the clamp means with at least one hand, it is impossible to hold the cloth to be sewn by both hands, and therefore it is not possible to position the cloth to be sewn while operating the clamp means. Therefore, even if the pressing frame is pressed and fixed to the base frame, there is a problem in that the cloth to be sewn cannot be held in a stretched state only by sandwiching the cloth to be sewn between the pressing frame and the base frame. In such a case, after the cloth to be sewn is once sandwiched between the holding frame and the base frame, the cloth to be sewn is gradually tensioned and held by repeatedly releasing and fixing the holding frame by the clamp means. The work efficiency significantly decreases as the work load increases. An object of the present invention is to provide a clamp-type sewn cloth holding frame that can hold a sewn cloth in a tensioned state easily, reliably and efficiently.

[0005]

A clamp type sewn cloth holding frame according to claim 1 is a clamp type sewn cloth holding frame for holding a sewn cloth used for embroidery or pattern sewing in a stretched state. A frame-shaped base frame, a presser frame for pressing the cloth to be sewn onto the base frame, a connecting mechanism for connecting the presser frame to the base frame so as to be vertically swingable, and the connection provided on the base frame. It is provided with an actuator which is selectively driven to a pressing fixed position for pressing the pressing frame against the base frame through a mechanism and a fixed release position.

A clamp-type sewn cloth holding frame according to claim 2 is
In the invention of claim 1, the actuator comprises an air cylinder. According to a third aspect of the present invention, in the clamp type sewing cloth holding frame, the actuator is a solenoid type actuator.

[0007]

In the clamp-type sewn cloth holding frame according to claim 1, a frame-shaped base frame and a pressing frame for pressing the sewn cloth on the base frame are provided, and the pressing frame is connected by a connecting mechanism.
It is connected to the base frame so that it can swing up and down. The base frame is provided with an actuator that selectively drives the pressing frame against the base frame via the connecting mechanism between a pressing fixing position and a fixing releasing position. When the cloth to be sewn is held in a stretched state, the pressing frame is driven to the fixing release position by the actuator, and then the cloth to be sewn is positioned on the base frame with both hands stretched. Then, when the pressing frame is driven to the pressing fixed position by the actuator, the cloth to be sewn can be held in a tensioned state.

That is, according to the clamp-type sewn cloth holding frame, since the actuator for driving the pressing frame to the pressing fixed position and the fixed releasing position is provided, the work load can be reduced. Moreover, since the actuator can be operated with the hands other than the operator's hand (for example, legs, elbows, knees, etc.) via the operation switches, the operation switches can be operated while positioning the cloth to be sewn with both hands. The holding frame can be driven by the actuator. That is, since the cloth to be sewn can be held easily and reliably in a stretched state, the work load can be reduced and the work efficiency can be improved.

According to the clamp type sewing cloth holding frame of the second aspect of the present invention, the same operation as that of the first aspect is achieved, but since the actuator is an air cylinder, the pressing frame can be quickly moved between the pressing fixing position and the fixing releasing position. Can be driven to. Moreover, since the pressing frame can be pressed with a desired pressing force by the air cylinder, various embroidery or pattern stitches can be applied to various cloths to be sewn, or various embroidery or pattern stitches can be sewn to the cloth to be sewn. When applying, the pressing force of the pressing frame can be easily set so as to prevent the sewn cloth from being loosened.

According to the clamp type sewn cloth holding frame of the third aspect, the same action as that of the first aspect is achieved, but since the actuator is a solenoid type actuator,
Similarly to claim 2, since the presser frame can be pressed with a desired pressing force, when various cloths to be sewn are embroidered or patterned, or various cloths are sewn or embroidered or patterned. When applying, the pressing force of the pressing frame can be easily set so that the sewn cloth can be prevented from being loosened. Moreover, since the pressing frame can be driven by a weak current, the equipment cost and running cost for driving the solenoid actuator can be reduced.

[0011]

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 multi-head embroidery machine having three embroidery sewing machine bodies. First, a description will be given of the multi-head embroidery machine M, as shown in FIG. 1, on the rear side of the upper surface of the base frame 1 extending in the left-right direction, a sewing machine support plate 2 having a rectangular shape in plan view and having a predetermined length in the left-right direction. On the sewing machine support plate 2, three embroidery sewing machines MH (corresponding to the main body of the sewing machine) are arranged in a row in the left-right direction at predetermined intervals. A needle bar case 4 having twelve needle bars (not shown) is attached to the front end of each arm section 3 of the embroidery sewing machine MH, and an embroidery pattern is formed with an embroidery thread of a desired color by the needle bar. The needle bar for forming is alternatively selected.

On the other hand, the bed 6 at the lower end of the pillar 5 connected to the arm 3 is mounted on the sewing machine support plate 2, and the cylinder bed 7 extends forward from the front end of the bed 6 A thread supplement device (not shown) is provided at the tip of the bed 7, and a stitch is formed on the cloth 15 to be sewn with an embroidery thread of a desired color in cooperation with the sewing needle attached to the selected needle thread. It is supposed to be done. In addition, the needle bar and the balance 8
An upper shaft (not shown) for moving the sewing machine up and down and a lower shaft (not shown) for rotating the thread supplement device are driven by a drive shaft that is rotationally driven by a V belt 9 connected to a sewing machine motor (not shown). .

A sewing table 10 is disposed on the front side of the sewing machine support plate 2 at substantially the same height as the upper surface of the cylinder bed 7. Auxiliary tables 11 and 12 are provided at both left and right ends of the sewing table 10. Has been. Sewing table 10
On the auxiliary tables 11 and 12, there is a movable frame 13 that extends in the left-right direction and has a rectangular shape in a plan view. The movable frame 13 includes a movable frame main body 13a and drive frame portions 13b and 13c fixed to the left and right ends thereof. Is mounted, the drive frame portion 13b at the right end of the movable frame 13 is driven to move in the X-axis direction (horizontal direction) by an X-axis drive mechanism (not shown), and the drive frame 13c at the left end thereof is moved in the Y-axis. It is configured to be moved and driven in the Y-axis direction (front-back direction) by a drive mechanism (not shown).
Then, the movable frame 13 which is driven to move in the X-axis and Y-axis directions.
The clamp type sewn cloth holding frame 20 corresponding to each of the three embroidery sewing machines MH is fixedly attached to the movable frame body 13a.

The clamp type sewing cloth holding frame 20 will be described. As shown in FIGS. 2 to 4, the clamp type sewing cloth holding frame 20 (hereinafter, referred to as a holding frame) includes a frame-shaped base frame 21 and a holding frame for pressing the sewing cloth 15 on the base frame 21. 30, a pair of clamp mechanisms 35 provided on the base frame 21 for pressing and fixing the holding frame 30 to the base frame 21 in a releasable manner, and a connecting mechanism for connecting the holding frame 30 to the base frame 21 so as to be vertically swingable. 48, and a pair of air cylinders 50 that selectively drive the presser frame 30 between the pressing and fixing position (see FIG. 3) and the fixing release position (see FIG. 4) via the connecting mechanism 48. .

First, the base frame 21 will be described. A substantially rectangular opening 22 is formed in the front portion of the base frame 21, and a fixing portion 23 for fixing the cloth 15 to be sewn by a holding frame 30 is provided on the outer peripheral portion of the opening 22. At the left and right ends of the rear portion of the base frame 21, the clamp mechanism 3
5, the air cylinder 50 is disposed on the rear side of each clamp mechanism 35 on a support member 51 fixed to the rear portion of the base frame 21. The front end of the base frame 21 is connected to the movable frame main body 13a via a connecting metal fitting 24 fixed to the central portion thereof. The connecting metal fitting 24 is attached to the upper surface of the movable frame main body 13a by a screw member 25 with a knob. It is fixed. Further, a connecting portion 26 bent in a step-up shape is provided at the rear end portion of the base frame 21, and the connecting portion 26 is movable by a pair of bolts 27 together with the rear end portion of the support member 51. It is fixed to the upper surface of the main body 13a.

Next, the holding frame 30 will be described. The presser frame 30 is formed in a frame shape slightly larger than the opening 22 formed in the base frame 21, and the entire lower surface of the presser frame 30 has a pressing portion 31 for pressing the sewing cloth 15 on the fixing portion 23 of the base frame 21. I am doing it. A connecting portion 33 is provided at the center of the left and right ends of the holding frame 30, and each connecting portion 33 is connected to the front end portion of the support member 34 via a pin member 32.
The pair of support members 34 rotatably support the pin member 32 about its axis. The support member 34 is fixed to the clamp lever 40 of the clamp mechanism 35, and
By the pair of clamp mechanisms 35, the presser frame 30 is moved to the base frame 2
1 is press-fixed so that the fixing can be released.

The clamp mechanism 35 will be described. As shown in FIGS. 3 and 4, each clamp mechanism 35 includes a base member 3 fixed to the base frame 21 with four bolts 37.
6, an input lever 38 having an input portion 39, a connecting member 47 connecting the base member 36 and the input lever 38, a clamp lever 40 connected to the base member 36 and the input lever 38, and the like.

At the rear of the upper end of the base member 36, there is a first
One end of the connecting member 47 is connected via the pin member 43, and the other end of the connecting member 47 is connected via the second pin member 44 to the position of about 1/5 from the front end of the input lever 38. The front end portion of the input lever 38 is connected to the rear upper end of the clamp lever 40 via the third pin member 45, and the rear lower end of the clamp lever 40 is connected to the upper end front portion of the base member 36 via the fourth pin member 46. Are linked to.

The connection mechanism 48 will be described below.
The connecting mechanism 48 that connects the holding frame 30 to the base frame 21 in a vertically swingable manner includes a pair of support members 34 that rotatably support the holding frame 30 via the pin members 32, and each support member 34.
A pair of clamp levers 40 having fixed rear portions and a fourth
A base member 37 that pivotally supports each clamp lever 40 via a pin member 46, and uses a bolt 37 to support the base frame 21.
And a base member 37 fixed to.

The operation of the clamp mechanism 35 will be briefly described. When the input portion 39 of the input lever 38 is driven upward from the clamped state of the clamp mechanism 35 shown in FIG. 3, the second pin member 44 causes the first pin member 44 to move. Around the member 43, the third
Since the pin member 45 rotates around the fourth pin member 46,
The clamp lever 40 connected to the third pin member 45 and the fourth pin member 46 rotates around the fourth pin member 46 as the input portion 39 moves upward, and the tip end portion of the clamp lever 40 reaches a predetermined height. And the clamp mechanism 35 is released from the clamp state (see FIG. 4).

When the input portion 39 is driven downward from the unclamped state of the clamp mechanism 35, the clamp lever 40 rotates in the opposite direction to the above via the fourth pin member 46, as shown in FIG. As described above, the center of the second pin member 44 becomes the clamp stable position located closer to the base member 36 than the straight line connecting the center of the first pin member 43 and the center of the third pin member 45, and the clamp mechanism 35 is clamped. Become.

Next, the air cylinder 50 which selectively drives the holding frame 30 between the pressing fixed position and the fixed releasing position via the connecting mechanism 48 will be described. As shown in FIGS. 3 and 4, the lower end portion of each air cylinder 50 is swingably supported by a support member 51 fixed to the base frame 21 via a bracket 55, and extends from the air cylinder 50. The tip portion of 53 is the input portion 39 of the clamp mechanism 35.
Is swingably connected to the lower surface of the through a bracket 54.

A hose member (not shown) from an air supply unit 56 is connected to the air cylinder 50, the air supply unit 56 is connected to a control unit 57, and the control unit 57 has an operation switch operable by a foot. 58 is connected. Although not shown, this operation switch 58
Is fixedly attached to a position where it can be easily operated (for example, the lower front end of the base frame 1 of the multi-head embroidery machine M).

Next, the operation of the holding frame 20 will be described. As shown in FIG. 4, with the presser frame 30 in the fixing release position, the sewing cloth 15 is stretched with both hands and positioned on the base frame 21. When the operating switch 58 is operated with the foot, the input portion 39 of the clamp mechanism 35 is driven downward together with the piston rod 53 of the air cylinder 50. Then, as shown in FIG. 3, the presser frame 30 moves to the pressing and fixing position for pressing the base frame 21, and the clamp mechanism 35 enters the clamped state, and the sewing cloth 15 is held in a stretched state.

That is, according to the holding frame 20, since the air cylinder 50 for driving the pressing frame 30 to the pressing fixed position and the fixed releasing position is provided, the work load can be reduced. Moreover, since the operation switch 58 for driving the air cylinder 50 can be operated by the operator's foot,
While positioning the cloth 15 to be sewn with both hands,
By operating the operation switch 58, the pressing frame 30 can be driven by the air cylinder 50. That is, the sewn cloth 1
Since it is possible to easily and surely hold the stretched state of the work piece 5, the work load can be reduced and the work efficiency can be improved.

Further, by the air cylinder 50, the holding frame 3
0 can be quickly driven to the pressing fixed position and the fixed releasing position, and the pressing frame 30 can be pressed with a desired pressing force. Therefore, in cooperation with the clamp mechanism 35, various sewing cloths can be sewn. When the embroidery or pattern sewing is performed on the cloth, or when various embroidery or pattern sewing is performed on the cloth to be sewn, the pressing force of the presser frame 30 is prevented so as to prevent loosening of the cloth to be sewn. It can be set easily.

Next, a clamp type sewn cloth holding frame 60 of another embodiment will be described with reference to FIGS. However, the same parts as those in the above-mentioned embodiment are designated by the same reference numerals, and detailed description thereof will be omitted. A clamp type sewing cloth holding frame 60 of another embodiment is provided with a pair of solenoid type actuators 61 instead of the pair of air cylinders 50 of the above example, and each solenoid type actuator 61.
Is a case member 62 made of steel, a solenoid coil (not shown) installed in the case member 62, and a case member 62.
It is composed of a plunger 63 and the like inserted through the.

The lower end of the case member 62 has a base frame 21.
Of the plunger 6 that is swingably supported by the support member 51 of the above through a bracket 66 and extends upward from the case member 62.
The tip end of 3 is swingably connected to the lower surface of the input portion 39 of the clamp mechanism 35 via a bracket 65. A spring 64 for urging the input portion 39 upward is arranged between the case member 62 and the input portion 39. The solenoid coil of the case member 62 is a conductive wire (not shown).
Is connected to a drive unit 67 by means of a control unit 68, and this drive unit 67 is connected to an operation switch 69 that can be operated by a foot. For example, it is fixedly attached to the lower part of the front end of the base frame 1 of the multi-head embroidery machine M.

That is, as shown in FIG. 6, after positioning the cloth 15 to be sewn on the base frame 21, the operation switch 69 is operated to operate the solenoid type actuator 6
When a current is supplied to the solenoid coil of No. 1, the input unit 39 is driven downward together with the plunger 36, and the presser frame 30 is driven by the input lever 38 to the pressing and fixing position via the connecting mechanism 48 and the clamp mechanism. 35 is clamped, and the cloth 15 to be sewn is held in a tensioned state. When the supply of electric current is stopped, the spring 64
As a result, the input portion 39 is driven upward, the pressing frame 21 is driven to the fixing release position, and the cloth 15 to be sewn can be removed.

According to the clamp-type sewn cloth holding frame 60, substantially the same action and effect as those of the above-described embodiment can be obtained, but since the solenoid type actuator 61 can drive the holding frame 30 with a weak current, the solenoid is used. The equipment cost and running cost for driving the actuator 61 can be reduced.

In the clamp type sewn fabric holding frames 20 and 60 of the main embodiment and the other embodiments, the clamp mechanism 35 may not be provided. For example, a support member to which each actuator can be connected is provided, The support member 34 is swingably connected to the base frame 21 between the tip of the support member 34 and the connecting portion of each actuator, and the holding frame 30 is vertically swingably connected to each base actuator by each actuator. The holding frame 30 is connected to the base frame 2 via a connecting mechanism that
It can be configured to press on 1.

[0032]

According to the clamp type sewn cloth holding frame of the present invention, a frame-shaped base frame and a presser frame for pressing the sewn cloth on the base frame are provided, and the presser frame is connected by a connecting mechanism. , Is vertically swingably connected to the base frame. The base frame is provided with an actuator that selectively drives the pressing frame against the base frame via the connecting mechanism between a pressing fixing position and a fixing releasing position. When the cloth to be sewn is held in a stretched state, the pressing frame is driven to the fixing release position by the actuator, and then the cloth to be sewn is positioned on the base frame with both hands stretched. Then, when the pressing frame is driven to the pressing fixed position by the actuator, the cloth to be sewn can be held in a tensioned state.

That is, according to the clamp type cloth holding frame for sewing, since the actuator for driving the pressing frame to the pressing fixed position and the fixed releasing position is provided, the work load can be reduced. Moreover, since the actuator can be operated with the hands other than the operator's hand (for example, legs, elbows, knees, etc.) via the operation switches, the operation switches can be operated while positioning the cloth to be sewn with both hands. The holding frame can be driven by the actuator. That is, since the cloth to be sewn can be held easily and reliably in a stretched state, the work load can be reduced and the work efficiency can be improved.

In the clamp type sewn cloth holding frame of the second aspect, the same effect as in the first aspect can be obtained, but since the actuator is an air cylinder, the pressing frame can be quickly moved between the pressing fixing position and the fixing releasing position. Can be driven to. Moreover, since the pressing frame can be pressed with a desired pressing force by the air cylinder, various embroidered or patterned stitches are made on the cloth to be sewn or when various embroidered or pattern stitches are made on the cloth. When applying, it is possible to easily set the pressing force of the pressing frame so as to prevent the sewn cloth from being loosened.

According to the clamp type sewn cloth holding frame of the third aspect, the same operation as that of the first aspect is achieved, but since the actuator is a solenoid type actuator,
Similarly to claim 2, since the presser frame can be pressed with a desired pressing force, when various cloths to be sewn are embroidered or patterned, or various cloths are sewn or embroidered or patterned. When applying, the pressing force of the pressing frame can be easily set so that the sewn cloth can be prevented from being loosened. Moreover, since the pressing frame can be driven by a weak current, the equipment cost and running cost for driving the solenoid actuator can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of a multi-head embroidery machine equipped with a clamp type cloth holding frame for sewing according to an embodiment of the present invention.

FIG. 2 is a plan view of the clamp type cloth holding frame for sewing.

FIG. 3 is a side view of the clamp-type sewn cloth holding frame (pressing and fixing position of the presser frame).

FIG. 4 is a side view of the clamp-type sewn cloth holding frame (fixing release position of the presser frame).

FIG. 5 is a side view of a clamp type sewing cloth holding frame (pressing and fixing position of a presser frame) according to another embodiment.

FIG. 6 is a side view of a clamp-type sewn cloth holding frame (fixing release position of a presser frame) according to another embodiment.

[Explanation of symbols]

 15 Sewing cloth 20, 60 Clamp type sewing cloth holding frame 21 Base frame 30 Holding frame 48 Connecting mechanism 50 Air cylinder 61 Solenoid type actuator

Claims (3)

[Claims] 1. A clamp-type sewn cloth holding frame for holding a sewn cloth used for embroidery or pattern sewing in a stretched state, wherein a frame-shaped base frame and the sewn cloth are pressed onto the base frame. And a connecting mechanism for connecting the pressing frame to the base frame in a vertically swingable manner, and a fixing position for fixing the pressing frame to the base frame via the connecting mechanism. A clamp type cloth holding frame for sewing, comprising: an actuator that is selectively driven to a release position. 2. The clamp type sewn cloth holding frame according to claim 1, wherein the actuator comprises an air cylinder. 3. The clamp type sewing cloth holding frame according to claim 1, wherein the actuator comprises a solenoid type actuator.