JPH02269861A - Embroidery machine furnished with fitting device for various embroidery frame - Google Patents

Abstract

PURPOSE: To bring an embroidering machine into the accurate position for the start of the embroidery process with always fitting each individual embroidery hoop with the same holding force by fixing a plurality of projections of the embroidery hoops having the fabric to be embroidered with a holder having a contact surface and an opposite holder facing to the said holder and having a bow spring. CONSTITUTION: After laying a fabric to be embroidered on an outer hoop 33 in the opened state of a turnbuckle of an embroidery frame 31, an inner hoop 32 is pushed into the outer hoop 13 and the turnbuckle is crimped and fixed. Free ends of supporting projections 49, 50 of the embroidery frame 31 are brought into contact to ribs 44, 45 of a holder 48 and contact surfaces 46, 47 and a protrusion 40 of the outer hoop 33 is laid on a bow spring 35, which a holder 9 opposite to the said holder 48 has, and the whole embroidery frame 31 is three-point mounted by bowing the bow spring toward a stopper 51.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an embroidery machine equipped with a device for attaching various embroidery frames.

[Conventional technology and problems]

A device for attaching various embroidery frames to a controlled frame guide of an embroidery machine is known from Japanese Utility Model Publication No. 3424/1983. This mounting device consists of a rectangular frame that can be combined with a frame guide to fix various embroidery frames at three points. On the front transverse arm of the rectangular frame, a protrusion covered with a foam material is provided as one of three fixed points.

On each side arm of the rectangular frame, the clamping surfaces are covered with foam as a support for the clamping elements.

A pair of levers are provided. These two fastenings form the other two points of the three-point fixation of the member. One of the levers is inserted into a hole in the side arm by means of a support pin at the opposite end of the clamping member. Another lever is pivotally connected to the first lever between the support pin and the clamping member. A position fixing screw screwed into a nut inside the side arm passes through a hole provided at the other end of the first lever and a long slit provided in the side arm of the rectangular frame.

This known mounting device is intended for mounting embroidery hoops of different sizes. To install one embroidery frame, place the embroidery frame against the front side arm of the rectangular frame with the foam covering of the protrusion, loosen the 1 position fixing screw, and then tighten the position fixing screw within the long slit of the side arm. This is done by moving a pair of levers in the circumferential direction of the embroidery frame with a constant pressure while moving the embroidery frame in the longitudinal direction.As a result, the embroidery frame is fixed at three points. The installation of the embroidery hoop is guaranteed by tightening the position fixing screw.

Tighten or loosen the position fixing screw when replacing the embroidery hoop.1. The moving operation and the pivoting of the pair of levers caused by the movement of the fixing screw are not only particularly tricky but also relatively cumbersome and time-consuming. This known mounting means that in the case of the device, the fixing screw is moved in the longitudinal direction;
Therefore, the pair of levers do not rotate completely uniformly, and the position of the embroidery frame to be tightened changes each time with respect to the central axis between the two levers, and as a result, the position of the first stitch also changes. Therefore, the position of the embroidery pattern on the embroidered object always changes, and such changes are difficult to accept in most applications.

This is because the quality of the product is affected or the installation of the cloth to be embroidered or the embroidery hoop requires modification (which results in a loss of time). Furthermore, the holding force for attaching the embroidery frame depends on a pair of levers used when moving the position fixing screw, and on tightening by rotating the member and manually adjusting the position of the member relative to the embroidery frame. However, this holding force therefore varies considerably from embroidery frame to embroidery hoop, and the reliability and accuracy of attachment is largely dependent on the carelessness of the operator.

[Problem to be solved by the invention]

The object of the invention is to configure an embroidery machine with a mounting device of this type in such a way that the various embroidery hoops are always mounted with the same holding force and are always brought to the correct position relative to the start of embroidery. That's true.

[Means and Effects for Solving the Problems] In order to solve the above problems, the present invention provides an embroidery machine equipped with a mounting device for fixing various embroidery frames; In the embroidery machine, the embroidery machine has an inner frame and an outer frame that surrounds the inner frame with the embroidery object interposed between the inner frame and the embroidery machine. , has two mutually opposing holders for fixing the embroidery frame at three points, and one of the holders has two contact surfaces intersecting each other at an angle for abutting the support surface of the outer frame. , the other holding body has a flexure spring, the flexure spring being provided with a recess for the protrusion provided on the outer frame so as to bisect the angle formed by the abutment surface, In addition, various embroidery frames are attached to an embroidery machine equipped with a device, and the various embroidery frames are detachably connected to the device, and the embroidery object is interposed between the inner frame and the inner frame. It has an outer frame with a horizontal slit surrounding the inner frame, and the outer frame has a
In the embroidery machine, the embroidery machine has at least two mutually opposing support surfaces for the abutment surfaces of the holders arranged to face each other, and both ends of the outer frame are connected by turnbuckles. The contact surface is formed into a flexible spring,
The present invention is characterized in that the turnbuckle is arranged on an axis of symmetry between the abutment surface of the one holder and the abutment surface of the other holder.

The position of the embroidery frame is accurately determined in the Y direction by the contact surfaces arranged in a prismatic manner at an angle to each other on the holder that can be connected to the frame guide, and the position of the embroidery frame in the X direction is determined accurately. The position is precisely determined by a protrusion that locks into a recess in the flexure spring. The embroidery process therefore always starts at the same position. By using a flexure spring, the installation does not depend on the care of the operator during the process, so no fluctuations in the holding force occur.

The mounting according to the preamble of claim 2 is in the case of an embroidery machine with a device, i.e. the mounting is such that the device has an outer frame with transverse slits, and the outer frame is arranged opposite to one another in the case of an embroidery machine. In the case of embroidery machines which have at least two mutually opposite support surfaces for the abutment surfaces and in which the split ends of the outer frame are joined by turnbuckles, the turnbuckles are arranged as usual (for example, in the West German utility model). (Registration No. 1980503), and are arranged at one location with an angle shifted from the axis of symmetry of the contact surfaces facing each other. When fixing embroidery items of different thicknesses, the outer frame with the transverse slits is expanded with different strengths. Therefore, the support surface that contacts the abutment surface of the holder is angularly displaced with respect to the abutment surface of the holder. As a result, when the two halves of the embroidery frame are inserted into the holding plate, they occupy different angular positions with respect to the axis of symmetry of the abutment surface, depending on the thickness of the embroidery object. Therefore the motif to be embroidered,
In other words, the position of the embroidery pattern on the embroidered item deviates from the desired position. Conventionally, this problem could only be resolved by fixing the embroidered item anew, that is, re-stitching the embroidered item, but fixing the embroidered item Because it is not easy to estimate the amount of correction required, a considerable amount of time is lost.
In most cases, the work had to be repeated many times.

Therefore, regardless of the thickness of the embroidery object, the embroidery frame can be inserted into the holder so that the outer frame is expanded angularly symmetrically with respect to the axis of symmetry of the abutment surface, and the embroidery frame is placed in the correct position with respect to the position of the embroidery pattern. It is particularly important to provide a turnbuckle as defined in claim 2.

An advantageous embodiment of the mounting device according to claim 2 is described in embodiment box 1.

According to the configuration of the flexible spring described in embodiment item 2.

The embroidery frame can be easily attached to the device.

In order to easily attach the embroidery frame and securely fix it, the configuration of the embodiment ring 3 is preferable.

With respect to the arrangement described in embodiment ring 2 or 3, embodiment ring 4 or 5 allows the mounting to accurately determine the height position of the various embroidery frames within the device.

A technologically advantageous configuration of the mounting of one of the holders of the device is described in embodiment circle 6.

The configuration described in embodiment ring 7 prevents the flexure spring from being bent too much.

With the configurations described in embodiment rings 8 and 9, the intermediate frame for attaching embroidery frames of different shapes or sizes can be combined with the frame guide, and the position of only one holder can be adjusted using the intermediate frame.

A technologically advantageous configuration of the locking device is shown in Embodiment 1
0.

By arranging the elastic means described in embodiment ring 11, the axis of symmetry of the contact surface of the outer frame does not depend on the thickness of the embroidered object. Therefore, changes in the position of the embroidered object can be avoided.

〔Example〕

Next, embodiments of the present invention will be described using the accompanying drawings.

In the figure, reference numeral 1 denotes a vertical bar of a frame guide of an embroidery machine, and the vertical bar 1 is moved in two mutually perpendicular directions (X direction and Y direction) by a stepping motor, for example, to form an embroidery pattern.
is movable relative to the embroidery head. Vertical tree 1
For example, a plurality of holding frames 2, 3 can be fastened to the holding frame 2, 3 with screws. The holding frames 2 and 3 are provided to hold various embroidery frames having different shapes and sizes. The holding frame 2, 3 consists of two side parts 4 and 5.

In FIG. 1, the side parts 4 and 5 are each connected on their upper side to a fixed plate 7 by a transverse support 6. The side parts 4 and 5 of the holding frame 2 are connected on their underside by a holding body 8 with a fastening plate 7, and the side parts 4 and 5 of the holding frame 3 are connected on their underside by a holding body 8 with a fastening plate 7. , is fixed by a holder 9 which likewise has a fixing plate 7. The holding frames 2 and 3 are screwed to the vertical member 1 by means of fixing plates 7.

In order to securely hold various embroidery frames 10 consisting of a closed inner frame 11 and an outer frame 13 formed with a slit in the side and connected by a turnbuckle 12, the side parts 4, 5 of the holding frame 2 are used. A holder 14 whose position can be adjusted is provided, and a deflection spring 15 which is integrally provided with the holder 8.

The bulge 16 of the flexible spring 15 is provided with a hollow conical recess 17 for a spherical ridge 18 provided on the outer frame 13 . The recess 17 and the ridge 18 inserted into the recess 17 form one of the three fixed points of the various embroidery frames 10. The other two points are the two ribs 19, 20
The ribs 19, 20 have a trapezoidal cross section and have contact surfaces 21, 22 that contact the holder 14. In the example shown in FIG. 1, the support surface and the contact surfaces 19 to 22 form a right angle. are doing.

The recess 17 for the ridge 18 is located at a position that subtends this right angle.

The outer frame 13 is provided with two support projections 23,24. The free ends of the support projections 23, 24 have ribs 19, 20
and the contact surfaces 21 and 22. A stopper 26 is provided on the holder 8 in order to limit the amount of elastic displacement of the flexible spring 15 when attaching and detaching the various embroidery frames 10.

In order to be able to mount various embroidery hoops of different shapes and sizes, the holder 14 is secured to the side parts 4, 5 of the holder frame 2 by locking pins 29, 30 under the action of compression springs 27, 28. It can be fixed in multiple positions.

The holding frame 3 is used to hold another embroidery frame 31, which consists of a closed inner frame 32 and an outer frame 33 with a transverse slit and a turnbuckle 34. A deflection spring 35 is integrally provided in the holding body 9. The deflection spring 35 has a web 37 on the bulge 36 (
(FIG. 2), the web 37 has an oblique impact surface 38 and a locking shoulder 39 connected thereto.

A projection 40 on the outer frame 33 cooperates with the web 37, which has an impact surface 38 and a locking shoulder 39. Projection part 40
A V-shaped groove 41 is formed in the free end of. - the groove 41 has a rounded sliding surface 42 for the oblique impact surface 38 of the web 37 and a surface 4 adapted to the slope of the impact surface 38;
3.

The web 37 and the groove 41 are fixed at three points on various embroidery frames 31.
forming a point. The other two points are two ribs 44.45 with a semicircular cross section and an abutment surface 46.4 of the holder 48.
It is in 7. The ribs 44, 45 and the contact surfaces 46, 47 form a right angle. The projection 40 for the web 37 of the flexure spring 35 is located at a position that subtends this right angle.

The outer frame 33 is provided with two support projections 49,50. The free ends of the support projections 49, 50 have ribs 44, 45
This conforms to the shape of the contact surfaces 46 and 47.

A stopper 151 is provided on the holder 9 to limit the amount of elastic displacement of the flexible spring 35 when the various embroidery frames 31 are attached and detached. In order to attach various embroidery hoops of different shapes and sizes, the holder 48 is likewise moved in several positions relative to the side parts 4, 5 by locking pins 29, 30 under the action of compression springs 27, 28. Can be fixed.

From FIG. 4 to FIG. 7, the inner frame 52 is closed.

5 shows various embroidery frames 55 which are made up of an outer frame 54 divided by transverse slits 53 and a technologically advantageous embodiment of a locking device 59 for a holder 56; FIG. Various embroidery frames 55 include a holder 56 and a deflection spring 15.
Or, it is provided with a deflection spring 57 and a turnbuckle 58 which are incorporated in the holding body 8 or 9 similarly to 35.

The outer frame 54 is provided with three support projections 60, 61, 62. The free end of the support projection 60.61 is rounded and the corresponding concavely formed abutment surface 6 of the holder 56
5.66 (FIG. 6). The holder 56 is otherwise similar to the holder 14 or 4.
It has the same configuration as 8. Contact surface 65. ．． 66 forms an angle.

The support protrusion 62 is positioned to subtend this angle.

The free end of the support protrusion 62 is formed into a wedge shape (
(FIG. 5), the wedge surface 67,68 forms a support surface for the abutment surface 69,70 formed correspondingly to the bulge 71 of the flexure spring 57. In order to limit the elastic displacement of the flexure spring 57, the stop 26 or 51 shown in FIG. 1 is provided on the holder 8 or 9.

The turnbuckle 58, which is arranged on the axis of symmetry between the support surface 63.64 and the abutment surface 65, 66.69°70, has a cylindrical nut 72 with a laterally extending threaded hole and a laterally extending step. A cylindrical support member 73 with a perforated hole, a clamping screw 74 formed as a flanged screw, and the clamping screw 7
It consists of two disc springs 75 which are arranged in the transverse slit 53 above the spring 4. The nut 72 is rotatably inserted into a hole provided in the outer frame 54 near the horizontal slit 53. The support member 73 is connected to the horizontal slit 53 of the outer frame 54.
is rotatably inserted into a hole provided on the other side of the The tightening screw 74 passes through a hole passing through the slit end of the outer frame 54 and a stepped hole provided in the support member 73 and is screwed into the nut 72 . The outer frame 54 provided with the horizontal slit is elastically tensioned by a disc spring 75.

Expand.

Instead of providing two support projections 60.61.

It is also possible to provide only one support projection opposite the support projection 62 with one support surface for the abutment surface provided on the holder 56 .

The locking devices 59 (FIG. 7) provided on each of the two opposing sides of the holder 56 have leaf springs 76 formed integrally with the holder 56. The leaf spring 76 is attached to the holder 5
6 is provided with a locking pin 78 that passes through a long slit 77 provided therein. The locking pin 78 engages in one of a plurality of holes 79 provided in the side portions 4, 5 of the holding frame 2 or 3 to position the holding body 56 in a plurality of positions relative to the holding frame 2 or 3. Lock it. Therefore, various embroidery frames having different shapes and sizes can be used for the holding frame 2 or 3.

During the embroidery process, the embroidery item is placed outside the embroidery machine.
Outer frame 13 with turnbuckle 12 or 34 open
or 33, and is pushed into the outer frame 13 or 33 by the inner frame 11 or 32, and the fastening is fixed between the inner frame and the outer frame by the turnbuckle 12 or 34.

In order to take out the various embroidery frames 10 and 31 when the embroidery process is completed, the embroidery frames 10 and 31 are bent by the spring 15 or 3.
Pull against 5. As a result, the deflection spring 15 or 35
It bends and touches the stopper 26 or 51. In this case, the supporting protrusions 23 and 24 are connected to the ribs 19, 20 and the contact surface 21.
．． 22, and the supporting protrusions 49.50 are freed from the ribs 44.45 and the contact surfaces 46.47.Firstly, by slightly tilting the rear parts of the various embroidery frames 1o and 31 upward, various embroidery The frames 10 and 31 can be removed from the holding frame 2 or 3.

The attachment of the various embroidery frames 10 with embroidery material stretched in advance is carried out by bringing the support protrusions 23 and 24 of the holder 14 into contact with the ribs 19 and 20 and the contact surfaces 21 and 22. When placed on the relaxed flexible spring 15, the various embroidery frames 10 can be aligned. Hakama part 18
By lightly pressing the various embroidery frames 10 in the region , the flexure spring 15 is deflected through the skirt part 18 towards the stopper 26 , and the bottle 18 is locked in the hole 17 .

In the same way, the free ends of the supporting protrusions 49, 50 of the embroidery frame 3, on which the embroidery material has been stretched, are attached to the ribs 44, 45 of the holder 48.
and the contact surfaces 46 and 47.

Next, the flexible spring 35 with the protrusion 4o of the outer frame 33 relaxed
When placed on the embroidery frame 31, the various embroidery frames 31 are aligned. Since the flexure spring 35 rests lightly in the area of the projection 40 , the flexure spring 35 rests on the stop 51 via the sliding surface 42 , which cooperates with the oblique impact surface 38 , and the web 37 is locked in the groove 41 . Ru.

Ribs 19, 20 or 44, 45 and contact surfaces 21, 22
or the supporting projections 2 to which 46 and 47 are adapted;
3, 24 or 49, 50, and the hakama portion 18 engages with the hole 17, or the web 37 engages with the groove 41, the height of the embroidery frame 10 or 31 also increases.
The position of the embroidery machine relative to the frame guide is also accurately and repeatably determined.

The characteristics of the operation mode of the various embroidery frames 55 are that the horizontal slit 53 has support surfaces 63/64, 67/68, and contact surfaces 65/66.
69/70, so that when the turnbuckle 58 is open the outer frame 54 is expanded symmetrically to adapt to the thickness of the embroidery, so that the support projection 60.6
The first angular position can be obtained regardless of the thickness of the embroidered item.

As a result, the various embroidery frames 55 are always attached to the holder 56 and 8 or 9 at the same angular position. Therefore, there is no need for corrections associated with re-covering the embroidered item.

As in the case of the various embroidery frames 10 and 31, also in the case of the various embroidery frames 55, during the embroidery process the embroidery object is placed outside the embroidery machine with the turnbuckle 58 open and the pattern to be embroidered It is placed on the outer frame 54 according to its position, is pushed into the outer frame 54 by the inner frame 52, and is fastened and fixed between the inner frame and the outer frame by the turnbuckle 58.

The attachment and detachment of the various embroidery frames 55 to the holders 56 and 8 or 9 is completely the same as that described in the operation example of the various embroidery frames 10.

Next, one embodiment of the present invention will be listed.

(1) Contact surface (69°70) provided on the deflection spring (57)
) has two abutment surfaces (65° 6G) that intersect at an angle to each other for the support surfaces (63, 64) provided on the outer frame (54). The flexure spring (57) is attached to a protrusion (6) provided on the outer frame (54) so as to partially define the angle formed by the contact surfaces (65, 66).
3. The embroidery machine according to claim 2, characterized in that it is formed with recesses (67, 68) for 2).

(2) The collision surface where the deflection spring (35) extends diagonally (3
8), to which the collision surface (38) connects;
Locking shoulder (39) for the protrusion (37) of the outer frame (33)
Claim 1.2. 1st above
The embroidery machine described in any one of the paragraphs.

(3) Claim 1.2, characterized in that the recess is formed by a hollow conical sinking hole (17) and the protrusion is formed by a spherical hakama part (18). The embroidery machine described in any one of the above.

(4) The contact surface (21) of one holder (14 or 48)
/22.46/47) are formed on the raised ribs (19, 20 or 44, 45), and the free ends of the supporting projections (23° 24 or 49.50) provided on the outer frame (13 or 33) Claim 1.2., characterized in that it is adapted to a rib (19°20 or 44.45). The embroidery machine according to any one of item 1 above.

(5) The contact surfaces (65, 66) of one holder (56) are formed in a concave shape, and the support protrusion (6) provided on the outer frame (54)
1.2, Embroidery machine according to claim 1, characterized in that the free ends of the embroidery parts (0, 61) are adapted to the abutment surfaces (65° 66).

(6) Claim 1.2, characterized in that the deflection spring (15, 35, 57) is formed integrally with one holding body (8 or 9), any one of the above clauses 1. The embroidery machine described in.

(7) The holding body (8 or 9) is provided with a stopper (26 or 51) for limiting the amount of elastic displacement of the deflection spring (15, 35, 57). The embroidery machine according to any one of paragraphs 3 to 6.

(8) The holder (8, 9, 14, 48, 56) is provided on the side portion (4, 5) of the intermediate frame (2°3) that can be connected to the drive unit of the embroidery machine. shall be. Claim 1.2. or any one of the above paragraphs 1 to 7.
The embroidery machine described in.

(9) According to item 8 above, the holding body (14, 48, 57) is adjustable in position in the Y direction and lockable with the intermediate frame (2 or 3). embroidery machine.

(10) As a locking device, the intermediate frame (2 or 3
) are used, two leaf springs (76) facing each other with locking pins (78) for the holes (79), the chain leaf spring (76) being formed in one piece with the holder (56). It is characterized by The embroidery machine according to item 9 above.

(11) Elastic means (7) for expanding the outer frame (54)
2. The embroidery machine according to claim 2, wherein the embroidery machine according to any one of claims 1 and 8, wherein the embroidery machine 5) is provided within a slit (53) of the outer frame (54).

[Brief explanation of drawings]

Figure 1 shows a plan view of the device, which includes two various embroidery frames with different fixing means, and shows how they are fixed to the carrying frame of the embroidery machine, and Figure 2 is an enlarged cross-section taken along the line ■-■ in Figure 1. Figure 3 is an enlarged sectional view taken along the line ■-■ in Figure 1, Figure 4
The figure shows one various embroidery frames, a turnbuckle arranged on the axis of symmetry of the contact surface of the outer frame, and a part of one holder equipped with a modification of the locking device. An enlarged cross-sectional view taken along the line
The enlarged sectional view according to Vl, FIG. 7, shows a turnbuckle for the outer frame with elastic means in the transverse slits. 8.9, 14.48...Holding body 10.31,5
5...Embroidery frame 11.32.52...Inner frame 13.33,54...Outer frame

Claims (2)

[Claims] (1) An embroidery machine equipped with a mounting device for various embroidery frames, in which the various embroidery frames are removably connected to the mounting device, and the embroidery object is interposed between the inner frame and the inner frame. In the embroidery machine having an outer frame surrounding the inner frame, the attachment device includes two mutually opposing holders (8, 14 or 9, 48), one of the holders (14 or 48) intersects at an angle with each other for abutting the support surfaces (21, 22 or 46, 47) of the outer frame (13 or 33). the other holder (8 or 9) has a flexure spring (15 or 35), which flexure spring (15 or 35) , 20 or 44, 45) for the protrusion (18 or 37) provided on the outer frame (13 or 33) so as to bisect the angle formed by
7 or 41). (2) An embroidery machine equipped with a mounting device for various embroidery frames, in which the various embroidery frames are removably connected to the mounting device, and the embroidery object is interposed between the inner frame and the inner frame. an outer frame surrounding the inner frame and provided with a transverse slit, the outer frame having at least two mutually opposing support surfaces for abutment surfaces of the holding body arranged opposite to each other; In the embroidery machine in which both ends of the frame are connected by turnbuckles, the abutment surfaces (69, 70) of one holding plate (8) are formed with a flexible spring (57), and the turnbuckle (58)
are arranged on the axis of symmetry between the abutting surfaces (69, 70) of the one holder (8) and the abutting surfaces (65, 66) of the other holder (56). embroidery machine.