JP3195097U - Embroidery frame and embroidery sewing machine having the same - Google Patents

Abstract

[PROBLEMS] To set various kinds of fabrics and embroidery objects having different thicknesses in a stable tension state without distortion, and to attach the embroidery object to a frame or to remove it from the frame There is provided an embroidery frame that can be easily carried out and that leaves almost no frame marks on the embroidery object, and an embroidery sewing machine having the embroidery frame. An embroidery sewing machine having an embroidery frame (1A) for holding an embroidery object between an outer frame (2) and an inner frame (3) attached to and detached from the outer frame (2), the inner circumference of the outer frame (2) The object to be embroidered is stretched between the outer frame 2 and the inner frame 3 by being inflated by injecting gas and installed between the wall surface 21 and the outer peripheral wall surface 31 of the inner frame 3. A tension tube 4 is provided. [Selection] Figure 1

Description

  The present invention relates to an embroidery frame that holds an embroidery object between an outer frame and an inner frame, and an embroidery sewing machine having the embroidery object, and in particular, embroiders various embroidery objects with different thicknesses for industrial use. The present invention relates to an embroidery frame suitable for the case and an embroidery sewing machine having the embroidery frame.

  Traditionally, there are two types of embroidery business: the embroidery name business that embroiders names on work clothes and uniforms, and the apparel embroidery business that embroiders logo designs and design patterns on apparel goods. In embroidery work, it takes time before and after performing embroidery. For example, clothes are taken out of a bag, framed, set on an embroidery sewing machine, thread processed after embroidery sewing, folded and packed in a bag. Work is done. Of these, the frame tensioning work is the most difficult, and if the frame cannot be tensioned firmly, there is a problem that the embroidery position is shifted or the embroidery cannot be neatly embroidered.

  At present, embroidery frames mainly used by domestic embroidery companies are plastic inner frames and outer frames which are not easily broken, and the inner frame is placed by inserting an embroidery object between the outer frames and the inner frame. The current situation is that it is fitted by the power of the operator. In this case, the embroidered fabric is framed with care so that there is no distortion, but each time the fabric or thickness of the embroidered material changes, the tension must be adjusted with the outer frame adjustment screw. Don't be. In addition, there is a thick product with padding and feathers, such as winter clothes, in the embroidery object, and it takes a lot of power to frame the work, and it takes more time to set than the embroidery time There is also. Accordingly, the work efficiency is poor, which is a considerable burden for women and elderly workers. Recently, clothing with enhanced functionality, such as mobile phone pockets, is increasing, but in this case, many pieces of fabric overlap at the position where the embroidery frame is set, making it difficult to frame.

  On the other hand, in the United States and the like, an embroidery frame that is fixed with a magnet has been developed. For example, JP-A-11-181666 discloses an embroidery frame composed of a small-diameter ring and a large-diameter ring, and magnets are embedded in the contact surfaces of the small-diameter ring and the large-diameter ring. There has been proposed an embroidery frame that can be set on an embroidery sewing machine with embroidery between them (Patent Document 1). According to the embroidery frame described in Patent Document 1, since the fabric is pinched using magnetic force, the attachment and detachment of the ring is easy and the operation feeling is excellent, and the fabric frame marks, scratches, slips, wrinkles, It is said that misalignment can be prevented.

  Japanese Patent Laid-Open No. 2011-190552 discloses an invention in which a wire-like member is provided between an outer frame and an inner frame, and an object to be embroidered is stretched by tightening the wire-like member. (Patent Document 2). That is, an outer groove is formed on the inner peripheral wall surface of the outer frame, and an inner groove is formed on the outer peripheral wall surface of the inner frame, and a wire-like member is accommodated in the outer structure of the outer frame. The tension of the embroidery object is increased by moving the wire-shaped member toward the inner groove side of the inner frame with respect to the cloth-like embroidery object sandwiched between the outer frame and the inner frame. It is like that.

Japanese Patent Laid-Open No. 11-181666 JP 2011-190552 A

  However, in the invention described in Patent Document 1, it is necessary to hold the embroidery object of various thicknesses and fabrics with a considerably strong magnetic force. A strong force is required, and there is a problem in removing the frame. For example, fine adjustment is difficult even when the embroidery set in the embroidery frame is wrinkled or the position is shifted, so the embroidery frame must be removed each time. In addition, since the necessary magnetic force varies depending on the thickness of the embroidery object and how the fabric slides, there is a problem that an embroidery frame having an appropriate magnetic force must be prepared for each type of embroidery object. Furthermore, magnet-type embroidery frames are imported and expensive, and are not popular among embroidery manufacturers.

  In the invention described in Patent Document 2, a wire adjusting screw for moving the wire-like member is a screw having a small pitch. Therefore, the wire adjusting screw is used to stretch the embroidery object. There is a problem that the work efficiency is poor because it must be rotated many times. In addition, when the object to be embroidered is sandwiched between the outer frame and the inner frame, the position of the wire-like member and the position of the inner groove must be matched, and there is a problem that the operation is difficult. In particular, in the case of thick products such as winter clothes, there is also a problem that the inner frame falls off from the outer frame with a pressing force when sandwiched.

  On the other hand, the embroidery frame includes not only a circular shape but also a rectangular embroidery frame. In the case of a structure in which the wire is tightened by an adjusting screw as in the embroidery frame or Patent Document 2, the embroidery frame is added to the embroidery object. The pressure concentrates on the corners, and the object to be embroidered cannot be pressed with uniform pressure. Therefore, as shown in FIG. 17, there is a problem that the tension near the center of each side of the embroidery frame becomes weak, and wrinkles and slack occur.

  In addition, when embroidering an object to be embroidered, if a non-woven fabric for preventing shrinkage is provided on the back surface of the object to be embroidered, it must be fixed to the embroidery frame in a state where the non-woven fabric is stretched together with the object to be embroidered. There is a problem that positioning is very difficult.

  Furthermore, when an embroidery frame is mounted on an embroidery sewing machine or the like and an attempt is made to embroidery, the object to be embroidered may be displaced from the embroidery sewing machine. For example, when embroidery is performed along the edge of the pocket, the pocket is oriented obliquely with respect to the embroidery sewing machine when the embroidery object is fixed to the embroidery frame and mounted on the embroidery sewing machine. At this time, conventionally, after removing the embroidery frame from the embroidery sewing machine, further removing the embroidery object from the embroidery frame, adjusting the angular position, the embroidery object must be clamped again and attached to the embroidery sewing machine. In addition, it took time and effort to adjust the angle.

  The present invention has been made to solve such problems, and even various types of fabrics and embroidery items having different thicknesses can be set to a stable tension without distortion. An object of the present invention is to provide an embroidery frame which can easily perform the work of stretching the embroidery object on the frame and the work of removing the embroidery object from the frame, and which leaves almost no trace of the frame on the embroidery object, and an embroidery sewing machine having the embroidery machine It is said.

  An embroidery frame according to the present invention is an embroidery frame that sandwiches an object to be embroidered between an outer frame and an inner frame that is attached to and detached from the outer frame, and includes an inner peripheral wall surface of the outer frame and the inner frame. A tension tube is provided between the outer peripheral wall surface and inflated by injecting gas to stretch the object to be embroidered between the outer frame and the inner frame.

  Further, as one aspect of the present invention, an outer frame groove is formed along the circumferential direction on the inner circumferential wall surface of the outer frame, and an inner frame groove is formed along the circumferential direction on the outer circumferential wall surface of the inner frame. The tension tube may be accommodated in either the outer frame groove or the inner frame groove.

  Furthermore, as one aspect of the present invention, an upper portion of the outer peripheral wall surface of the inner frame is provided with a locking portion formed in a flange shape with a size larger than the inner periphery of the outer frame, and the outer frame The outer peripheral wall surface of the outer frame is formed in a tapered shape whose diameter is reduced upward, and has a tapered inner peripheral wall surface that can be fitted along the outer peripheral wall surface of the outer frame, and the outer frame and the inner frame A non-woven fabric fixing inner frame that is held between the inner frames and pressed from above by the engaging portion of the inner frame may be provided.

  Further, as one aspect of the present invention, an uneven surface for preventing slipping may be formed on at least one of the inner peripheral wall surface of the outer frame or the outer peripheral wall surface of the inner frame.

  Furthermore, as one aspect of the present invention, the inner frame can be swung in a horizontal plane and can be fixed at a predetermined rocking position in order to adjust an angle in the horizontal plane of the embroidery object with respect to the embroidery sewing machine. A simple angle adjusting mechanism may be provided.

As one form of the invention, the pressure of the gas injected into the stretched tube may be ^{2.5kg / m 2 ~5kg / m 2} .

  Furthermore, an embroidery sewing machine according to the present invention includes the embroidery frame.

  According to the present invention, it is possible to set various kinds of fabrics and embroidery objects having different thicknesses in a stable tension without distortion, and work and frame for stretching the embroidery objects on the frame. It is possible to easily remove the frame from the embroidery object, and to leave almost no frame marks on the object to be embroidered.

1 is a perspective view showing a first embodiment of an embroidery frame according to the present invention. It is a top view which shows the outer frame in this 1st embodiment. It is a longitudinal cross-sectional view which shows the 2A-2A cross section in FIG. It is a top view which shows the inner frame in this 1st embodiment. It is a longitudinal cross-sectional view which shows the 4A-4A cross section in FIG. When the inner frame is mounted on the inner periphery of the outer frame in the first embodiment, the outer frame groove and the inner frame groove are vertically displaced, and the gap between the outer frame and the inner frame It is a longitudinal cross-sectional view shown. It is a top view which shows the tension tube in this 1st embodiment. It is a perspective view which shows the air supply tool in this 1st embodiment. It is a longitudinal cross-sectional view which shows the state which mounted the to-be-embroidered object in the outer frame in this 1st embodiment. It is a longitudinal cross-sectional view which shows the state which mounted | worn the to-be-embroidered object by mounting | wearing the inner frame with the inner periphery of the outer frame in this 1st embodiment. FIG. 11 is a partially enlarged view of FIG. 10. It is an expanded vertical sectional view which shows the state which inject | poured gas into the tension tube in this embodiment and stretched the to-be-embroidered object. It is a photograph which shows the state which clamped the winter clothing as an to-be-embroidered object in the Example 1 between the outer frame and the inner frame. It is a photograph which shows the state which injected the air into the tension tube of the embroidery frame in FIG. It is a photograph which shows the state of the back side of the to-be-embroidered object in the state of FIG. It is a photograph which shows the state which stretched the vinyl sheet as an to-be-embroidered object in the present Example 1. FIG. It is a photograph which shows the state in which the to-be-embroidered object was set to the conventional embroidery frame, and the wrinkle and the looseness produced. It is a perspective view which shows 2nd embodiment of the embroidery frame which concerns on this invention. It is a perspective view which shows the outer frame in this 2nd embodiment. It is a top view which shows the inner frame and angle adjustment mechanism in this 2nd embodiment.

  Hereinafter, an embroidery frame according to the present invention and a first embodiment of an embroidery sewing machine having the embroidery frame will be described with reference to the drawings. In the first embodiment, the embroidery frame 1 is configured to be suitable for an industrial embroidery sewing machine, particularly in the embroidery industry. However, the embroidery frame 1 is not limited to this, and is not limited thereto. It is also possible to apply to.

  As shown in FIG. 1, the embroidery frame 1A of the first embodiment includes an outer frame 2, an inner frame 3 that is attached to and detached from the inner periphery of the outer frame 2, an inner peripheral wall surface 21 of the outer frame 2, and the The tension tube 4 is provided between the outer peripheral wall surface 31 of the inner frame 3. Hereinafter, each configuration will be described in detail.

  As shown in FIG. 2, the outer frame 2 is a frame body formed in a substantially rectangular shape without a break, and is formed of reinforced plastic in the first embodiment. In addition, a raw material is not limited to a reinforced plastic, It can select suitably from a timber, a metal, etc.

  A concave outer frame groove 22 is formed in the inner peripheral wall surface 21 of the outer frame 2 along the circumferential direction. As shown in FIG. 3, the outer frame groove 22 is formed in a substantially arc shape from the bottom surface 23 that is the deepest position, the inclined surface 24 that is inclined toward the bottom surface 23, and the bottom surface 23. And an arcuate surface 25.

  The inclined surface 24 is smoothly inclined downward toward the bottom surface 23 of the outer frame groove 22. When the extending tube 4 described later is expanded, the extending tube 4 is moved along the inclined surface 24 to the bottom surface. It is guided to expand in the 23 direction.

  On the other hand, the arc surface 25 is formed in a smooth arc shape from the bottom surface 23 toward the inner peripheral wall surface 21 of the outer frame 2, contrary to the inclined surface 24. The circular arc surface 25 plays a role of receiving the tension tube 4 that expands along the inclined surface 24 and holding it so as not to bulge out from the outer frame groove 22.

  In the first embodiment, as described above, the inclined surface 24 is inclined downward toward the bottom surface 23 side, and the circular arc surface 25 is disposed below the bottom surface 23 via the bottom surface 23. However, the present invention is not limited to this. Instead, the upper and lower sides may be reversed, that is, the inclined surface 24 may be inclined upward, and the circular arc surface 25 may be disposed on the upper side via the bottom surface 23. Further, the shape of the outer frame groove 22 is not limited to the configuration having the inclined surface 24 or the like, and may be appropriately changed according to the shape or the like of the tension tube 4.

  As shown in FIG. 4, the inner frame 3 is a frame body that is formed in a substantially rectangular shape without any breaks, and is formed of reinforced plastic in the first embodiment. Further, the outer periphery of the inner frame 3 is formed to have a slightly smaller dimension than the inner periphery of the outer frame 2. Therefore, the inner frame 3 is mounted in a loosely fitted state on the inner periphery of the outer frame 2. In addition, although it does not necessarily limit about the dimension of the clearance gap between the inner frame 3 and the outer frame 2, it is good to form the clearance gap of a dimension larger than the thickness of an to-be-embroidered object. The material is not limited to reinforced plastic, and may be appropriately selected from wood, metal, and the like.

  As shown in FIG. 5, an inner frame groove 32 formed in a concave shape along the circumferential direction is formed on the outer peripheral wall surface 31 of the inner frame 3. The inner frame groove 32 accommodates the tension tube 4 and is formed in a size that allows the tension tube 4 to be accommodated, as shown in FIG. The inner frame groove 32 is formed so that the center point of the accommodated extension tube 4 is disposed at a position facing the inclined surface of the outer frame groove 22 of the outer frame 2. That is, the center point of the bottom surface 33 of the inner frame groove 32 and the center point of the bottom surface 23 of the outer frame groove 22 are shifted vertically.

  Further, as shown in FIG. 5, the inner frame 3 is provided with a locking portion 34 that locks to the outer frame 2 when the inner frame 3 is mounted inside the outer frame 2. The locking portion 34 is provided above the outer peripheral wall surface 31 of the inner frame 3 and is formed in a flange shape having a size larger than the inner periphery of the outer frame 2. Therefore, when the inner frame 3 is mounted inside the outer frame 2, the locking portion 34 is locked to the outer frame 2, so that the inner frame 3 is prevented from falling off the outer frame 2.

  Further, as shown in FIG. 4, a pair of connecting plates 35, 35 are extended outward from the opposite sides of the inner frame 3 in the first embodiment. The pair of connecting plates 35, 35 are for fixing to the embroidery sewing machine. Moreover, the attachment 36 fixed so that attachment or detachment was possible was provided in the front-end | tip. The attachment 36 can be exchanged to cope with different fixing methods for each type of embroidery sewing machine. The connecting plate 35 is not limited to a pair, and can be changed as appropriate according to the type of embroidery sewing machine.

  The tension tube 4 is an expandable / contractable annular tube provided between the inner peripheral surface 21 of the outer frame and the outer peripheral surface 31 of the inner frame. As shown in FIG. 7, the tension tube 4 in the first embodiment is provided with an insufflation tool 42 for injecting gas into the tube body 41.

  The tube body 41 is made of a single silicon tube, and both ends thereof are connected to each other by the air injecting device 42 and formed in an annular shape. When the gas is injected from the air infusing device 42, the tube main body 41 is expanded by increasing the internal pressure. In addition, although the tube main body 41 is formed in the annular shape via the air supply tool 42, it is not limited to this, The tube main body 41 itself is formed in the continuous ring shape, and the air supply tool is provided in the middle. You may make it attach. The material is not limited to silicon, and can be appropriately selected from materials having appropriate elasticity that expands due to an increase in internal pressure.

  As shown in FIG. 8, the insufflation tool 42 has an injection part 43 for injecting air, and extraction parts 44, 44 branched from the injection part 43 into two branches. Gas is injected from both ends of the tube main body 41 through the bifurcated dispensing portions 44, 44 so as to expand without unevenness. Further, an air compressor (not shown) is connected to the injection portion 43, and compressed air is injected from the air compressor. The air compressor is provided with a barometer for measuring the pressure of the injected gas. Note that the gas injected into the tension tube 4 is not limited to air, and other gases such as nitrogen may be selected.

  In addition, a backflow prevention valve is provided inside the air injecting device 42 so that the injected gas does not flow back to the injection portion 43 side. Further, the backflow prevention valve is provided with an opening button (not shown). By pushing this opening button, the backflow prevention valve is opened, and the gas in the tube body 41 can be discharged to lower the internal pressure. It is like that.

  Next, the operation of each component in the embroidery frame 1A of the first embodiment and the embroidery sewing machine having the embroidery frame 1A will be described.

  First, as shown in FIG. 9, the embroidery object O is placed on the outer frame 2. At this time, the part to be embroidered of the embroidery object O is set within the inner peripheral range of the outer frame 2.

  Next, as shown in FIG. 10, the inner frame 3 is mounted on the embroidery object O from the inside of the outer frame 2. As a result, the embroidery object O is sandwiched between the outer frame 2 and the inner frame 3. At this time, as shown in FIG. 11, there is a gap larger than the thickness of the embroidery object O between the inner periphery of the outer frame 2 and the outer periphery of the inner frame 3. Therefore, even if the to-be-embroidered object O is a thick cloth such as a winter clothes or the like, it can be easily sandwiched. Further, the embroidery object O is not rubbed against the outer frame 2 or the inner frame 3 so that the embroidery object O is not damaged.

  Further, since the locking portion 34 provided on the inner frame 3 is locked to the outer frame 2, the inner frame 3 will not fall out. Therefore, the inner frame 3 and the outer frame 2 can be positioned simply by pressing the inner frame 3 from above, which makes the operation easier.

  As shown in FIGS. 10 and 11, gas is injected into the tension tube 4 with the embroidery object O sandwiched between the outer frame 2 and the inner frame 3. In the first embodiment, air is injected into the tube main body 41 from the injection portion 43 of the air injecting device 42 by an air compressor. Since the air compressor is provided with a barometer, it can be injected at a specified pressure without excessive injection.

  When air is injected into the tension tube 4, the internal pressure increases and the tension tube 4 expands. As shown in FIG. 12, the expanded tension tube 4 swells from the inner frame groove 32 toward the outer frame groove 22 side, and presses the embroidery object O toward the outer frame groove 22 side. In the first embodiment, the expanded tube 4 that has been expanded is guided downward along the inclined surface 24, and the object to be embroidered O is stretched so as to be pulled outward and downward. In addition, the tension tube 4 is stretched to stretch the object to be embroidered O by pulling it in the entire outer direction of the embroidery frame 1A. Furthermore, since the tension tube 4 expands instantaneously, the tensioning operation is instantaneously completed and there is no distortion.

  And even if the shape of the outer frame 2 and the inner frame 3 is a rectangular shape, the pressure in the tension tube 4 is equally applied to the whole. Therefore, since the pulling force is not concentrated on the corners and the like and becomes uniform over the entire circumference, slack in the embroidery object O does not occur.

  Further, since the extension tube 4 is made of a highly elastic material such as silicon resin, even if the object to be embroidered O is stretched between the embroidery frames 1A, no rubbing or traces remain, and the object to be embroidered. O will not be damaged.

  Next, a case where unintentional looseness or wrinkle occurs or an angle shift occurs when the article O to be embroidered is stretched on the embroidery frame 1A will be described. First, the opening button is pressed to discharge air from the tension tube 4 and the internal pressure is lowered to contract the tension tube 4. As a result, a gap is created between the outer frame 2 and the inner frame 3 to the extent that the embroidery object O can be moved.

  Here, the embroidery object O is appropriately adjusted so as not to cause wrinkles or deviations by manually pulling it. Then, the embroidery object O is stretched again by injecting air into the tension tube 4 by the air compressor. Therefore, in the embroidery frame 1A of the first embodiment, the tension of the embroidery object O can be finely adjusted without removing the inner frame 3 from the outer frame 2.

  The embroidery frame 1A on which the embroidery object O is stretched is fixed to an embroidery sewing machine having a general function (not shown). In the first embodiment, the embroidery sewing machine is fixed via a pair of connecting plates 35, 35 provided in the inner frame 3. Since the air inflow tool 42 in the first embodiment is provided with a backflow prevention valve, the connection between the tension tube 4 and the air compressor can be disconnected without lowering the internal pressure. Therefore, the work of attaching the embroidery frame 1A to the embroidery sewing machine can be easily performed. When using an embroidery sewing machine of a different type, it is only necessary to replace the attachment 36 at the tip of the connecting plate 35.

  When the embroidery frame 1A is removed from the embroidery machine after the embroidery work by the embroidery machine is completed, the opening button is pressed to discharge the air in the tension tube 4 to the outside of the tube. As a result, the internal pressure is reduced, and the tension tube 4 contracts due to the elastic force, so that a gap is formed between the inner frame 3 and the outer frame 2 and the embroidery object O can be easily removed from the embroidery frame 1A. . Therefore, even when the embroidery frame 1A is removed, the embroidery frame 1A and the embroidery object O are not rubbed and the embroidery object O is not damaged.

According to the embroidery frame 1A of the first embodiment as described above and the embroidery sewing machine using the embroidery frame 1A, the following effects can be obtained.
1. Since the object to be embroidered O can be easily held between the outer frame 2 and the inner frame 3 and the object O to be embroidered can be instantly stretched by simply injecting gas into the tension tube 4. The tensioning work can be completed in a short time.
2. Since the object to be embroidered O can be pressed with a uniform pressure in the circumferential direction, even if the outer frame 2 and the inner frame 3 are rectangular or the like, there is no slack, and the tensioning work can be performed reliably. It can be carried out.
3. When a gap can be formed in advance between the outer frame 2 and the inner frame 3 and the tension tube 4 is a soft and highly elastic material, it is necessary to make fine adjustments to the tension of the embroidery object O. Even so, the object to be embroidered O is not damaged because it is not necessary to pull it forcibly.

  Next, a second embodiment of the embroidery frame according to the present invention will be described. Note that, among the configurations of the embroidery frame according to the second embodiment, configurations that are the same as or correspond to those of the first embodiment described above are denoted by the same reference numerals, and description thereof is omitted.

  As shown in FIG. 18, the embroidery frame 1 </ b> B according to the second embodiment includes a non-woven fabric fixing middle frame 6 together with the outer frame 2, the inner frame 3, and the tension tube 4. Hereinafter, each configuration will be described in detail.

  The outer frame 2 is formed in a tapered shape in which the outer peripheral wall surface 26 is reduced in diameter upward. In the second embodiment, the outer frame 2 is formed in a substantially circular shape without a break.

  Further, as shown in FIG. 19, the inner peripheral wall surface 21 of the outer frame 2 has an uneven surface 27 for preventing slipping by knurling or the like in order to increase the gripping force of the embroidery object O by the inner peripheral wall surface 21. Is provided. The position where the uneven surface 27 for preventing slipping is provided is not limited to the inner peripheral wall surface 21 of the outer frame 2, but the outer peripheral wall surface 31 of the inner frame 3, the inner frame groove 32, the outer frame groove 22, etc. Alternatively, it may be provided in another part in contact with the embroidery object O.

  Similar to the shape of the outer frame 2, the inner frame 3 is formed in a substantially circular shape. Moreover, the upper part of the outer peripheral wall surface 31 of the inner frame 3 has the latching | locking part 34 formed in flange shape similarly to 1st embodiment.

  The inner frame 3 is provided with an angle adjusting mechanism 5 that can adjust the angular position in the horizontal plane. As shown in FIG. 20, the angle adjustment mechanism 5 in the second embodiment makes the inner frame 3 swingable in a horizontal plane in order to adjust the angular position of the embroidery object O after being placed on the embroidery sewing machine. It can be fixed at a predetermined swing position. The angle adjusting mechanism 5 has an attachment 35 attached to both left and right ends of the locking portion 34 for mounting on an embroidery sewing machine, and a curved shape opened along an arc centering on the center of the inner frame 3. The long hole 51 and a fastener 52 that fastens the attachment 35 along the long hole 51 in a slidable manner.

  In the second embodiment, the angle adjusting mechanism 5 is formed with the long holes 51 at both ends of the locking portion 34. However, only one of the long holes 51 is used as the long hole 51 and the other is used as the rotating shaft. The angular position may be adjusted.

  The non-woven fabric fixing middle frame 6 fixes the non-shrinkable nonwoven fabric F applied to the back side of the embroidery object O when the embroidery object O is embroidered. The non-woven fabric fixing middle frame 6 has a tapered inner peripheral wall surface 61 that can be fitted along the outer peripheral wall surface 26 of the outer frame 2.

  Next, the operation of each component in the embroidery frame 1B of the second embodiment will be described.

  In the embroidery frame 1B of the second embodiment, together with the embroidery object O, a non-shrinkage nonwoven fabric F applied to the back side of the embroidery object O is sandwiched and fixed.

  Specifically, as shown in FIG. 18, the nonwoven fabric F is placed on the outer frame 2, and the nonwoven fabric fixing middle frame 6 is fitted along the outer peripheral wall surface 26 of the outer frame 2. Further, the embroidery object O is placed thereon, and the inner frame 3 is mounted on the inner side of the outer frame 2 from above.

  By injecting air into the tension tube 4, the embroidery object O is fixed, and the non-woven fabric fixing inner frame 6 is pressed from above by the locking portion 34 of the inner frame 3. The nonwoven fabric F is sandwiched and fixed between the inner peripheral wall surface 61 of the inner frame 6 for fixing the nonwoven fabric 26 and 26. Therefore, since the nonwoven fabric F is fixed to the embroidery frame 1B together with the article to be embroidered O, it is possible to prevent the position from shifting.

  Further, in the second embodiment, the embroidery object O can be firmly fixed by a high grip force by the uneven surface 27 for preventing slip formed on the inner peripheral wall surface 21 of the outer frame 2.

  The embroidery frame 1B to which the article to be embroidered O and the nonwoven fabric F are fixed is attached to the embroidery sewing machine, and embroidery is appropriately performed. At this time, if the angular position of the embroidery object O in the horizontal plane is shifted with respect to the embroidery sewing machine, the fastener 52 of the angle adjusting mechanism 5 is loosened so that the inner frame 3 can swing with respect to the attachment 35. The inner frame 3 is swung along the long hole 51 to adjust to a desired angular position, and the fastener 52 is fastened and fixed again. As a result, the angle can be adjusted by swinging the embroidery frame 1A itself holding the embroidery object O or the like.

  According to the embroidery frame of the second embodiment as described above and the embroidery sewing machine using the embroidery frame, the nonwoven fabric F for preventing shrinkage can be fixed together with the embroidery object O to the embroidery frame 1B. Moreover, since the to-be-embroidered object O can be fixed with high grip force by the uneven surface 27 of the inner peripheral wall surface 21 of the outer frame 2, there will be no positional deviation after fixing. Furthermore, since the angular position in the horizontal plane can be adjusted with respect to the embroidery sewing machine, the re-stretching time can be shortened.

  In Example 1, an embroidery frame 1 according to the present invention was created, and a thick fabric used as a winter clothing as an embroidery object O and a thin fabric made of a vinyl sheet were stretched with the embroidery frame 1. The embroidery frame 1 in the first embodiment is formed in a circular shape as shown in FIGS. 13 to 16.

As shown in FIG. 13, in the embroidery frame 1 of the first embodiment, the embroidery object O is wrinkled only by holding the embroidery object O between the outer frame 2 and the inner frame 3. State. Therefore, air having a pressure of about 5 kg / m ² is injected into the tension tube 4, and the results are shown in FIGS. 14 and 15.

  As shown in FIG. 14, the wrinkles generated in the winter clothes are not stretched by injecting air into the tension tube 4. In addition, it can be seen that the stretched winter clothes do not show any slack in the middle, and are evenly pulled in the entire circumferential direction of the embroidery frame 1.

  In addition, as shown in FIG. 15, the back of the winter clothing fabric has a portion that cannot be pulled sufficiently by the opening of the pocket portion, so although some wrinkles remain, the batting does not shift or shift, You can see that name embroidery can be done beautifully.

Next, the vinyl sheet was stretched using the embroidery frame 1 of Example 1. The pressure of the air injected into the tension tube 4 is about 2.5 kg / m ² . As shown in FIG. 16, the vinyl sheet was stretched without wrinkles as in the winter clothes.

As described above, by using the embroidery frame 1 of the first embodiment, it is possible to reliably stretch the embroidery object O having various thicknesses from a thick fabric such as a cold protection clothing to a thin fabric such as a vinyl sheet. all right. Further, the air pressure at that time ^was found to 2.5kg / ^{m 2} ~5kg / m 2 approximately, are suitable.

  The embroidery frame according to the present invention is not limited to the above-described embodiments, and can be changed as appropriate.

  For example, in each embodiment, the extension tube 4 is accommodated in the inner frame groove 32 of the inner frame 3, but the extension tube 4 is accommodated in the outer frame groove 22 of the outer frame 2, and air is injected. The stretched tube 4 may be configured to expand into the inner frame groove 32 of the inner frame 3. Moreover, although the groove | channel is provided in each of the outer frame 2 and the inner frame 3, you may make it provide only in either one. Further, a taper or the like may be provided on the inner peripheral wall surface 21 of the outer frame 2 and the outer peripheral wall surface 31 of the inner frame 3 without providing a groove, and the stretched tube 4 may be provided therebetween. As a result, the expanding tube 4 that expands can stretch the embroidery object O along the taper or the like.

  The extending tube 4 in the present embodiment uses a tube having a circular longitudinal cross-sectional shape, but may have other shapes according to the shapes of the inner frame groove 32 and the outer frame groove 22. Further, the outer surface of the tension tube 4 may be processed such that the embroidery object O does not slip easily.

DESCRIPTION OF SYMBOLS 1 Embroidery frame 2 Outer frame 3 Inner frame 4 Tension tube 5 Angle adjustment mechanism 6 Non-woven fabric fixing inner frame 21 Inner peripheral wall surface 22 Outer frame groove 23 Bottom surface 24 Inclined surface 25 Arc surface 26 Outer peripheral wall surface 27 Uneven surface 31 Outer peripheral wall surface 32 Frame groove 33 Bottom surface 34 Locking portion 35 Connecting plate 36 Attachment 41 Tube 42 Air injecting tool 43 Injection portion 44 Outlet portion 51 Long hole 52 Fastener 61 Inner peripheral wall surface O Embroidery object

Claims (7)

An embroidery frame for holding an embroidery object between an outer frame and an inner frame attached to and detached from the outer frame,
It is installed between the inner peripheral wall surface of the outer frame and the outer peripheral wall surface of the inner frame, and the object to be embroidered is sandwiched between the outer frame and the inner frame by inflating by injecting gas. An embroidery frame with a tension tube to be installed.   An outer frame groove is formed along the circumferential direction of the outer peripheral wall surface of the outer frame, and an inner frame groove is formed along the circumferential direction of the inner frame outer peripheral wall surface. The embroidery frame according to claim 1, wherein the tension tube is accommodated in any one of the inner frame grooves. The upper part of the outer peripheral wall surface of the inner frame is provided with a locking portion formed in a flange shape having a size larger than the inner periphery of the outer frame, and the outer peripheral wall surface of the outer frame is contracted upward. It is formed in a tapered shape that
It has a taper-shaped inner peripheral wall surface that can be fitted along the outer peripheral wall surface of the outer frame, is sandwiched between the outer frame and the inner frame, and is pressed from above by a locking portion of the inner frame. The embroidery frame according to claim 1, further comprising an inner frame for fixing the nonwoven fabric.   The embroidery frame according to any one of claims 1 to 3, wherein an uneven surface for preventing slippage is formed on at least one of an inner peripheral wall surface of the outer frame and an outer peripheral wall surface of the inner frame.   The inner frame is provided with an angle adjustment mechanism that can swing in the horizontal plane and can be fixed at a predetermined swing position in order to adjust the angle in the horizontal plane of the embroidery object with respect to the embroidery sewing machine. The embroidery frame according to any one of claims 1 to 4. The pressure of the gas injected into the stretched tube is ^{2.5kg / m 2 ~5kg / m 2} , the embroidery frame according to any one of claims 1 to 5.   An embroidery sewing machine comprising the embroidery frame according to any one of claims 1 to 6.