JPH0440466B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an embroidery machine used for sewing cylindrical objects such as hats and sleeves of shirts, that is, sewing pictures and patterns onto cloth using colored threads.

For this type of embroidery hoop, the area larger than the embroidery pattern (for example, 5cm x 5cm or 10cm x
The fabric was layered on a ring-shaped tension frame (10 cm), and a ring-shaped core with a slightly smaller diameter was placed on top of it, and the fabric was held between the inner surface of the tension frame and the outer surface of the core, and the fabric was pulled. Thereafter, by connecting a connecting portion provided on a part of the tension frame to a drive attachment, the tension frame is moved back and forth and left and right on a plane to embroider the cloth surface. However, the above-mentioned tension frame had a major drawback in that it could not be used for hats with eaves.

Therefore, in order to eliminate the above-mentioned drawbacks, we have developed an embroidery needle that can move up and down, a bed that is equipped with a hook at a position opposite to the needle, and a hook between the needle and the bed when the needle is in the raised position. The outer surface of the curved fabric upholstery frame is formed into a semicylindrical curved surface and is attached to the front surface of the hat. By having a through-hole for embroidery that has a larger area than the embroidered picture or pattern, the inner surface of the cylindrical object can be placed against the curved frame and embroidered over a wide area even in that state. I tried to provide an embroidery sewing machine that was made like this.

However, when embroidering a hat by placing it on the curved fabric upholstery frame, the periphery of the part of the hat to be embroidered is supported by the curved surface of the edge of the embroidery hole, but the embroidery hole in the curved fabric upholstery frame is Due to its large size, the center front of the hat is not supported. Therefore, because there is no support at the center of the front of this hat, and because hats are generally made of stiff cloth, they flex up and down as the needle moves up and down. If this deflection is large, the embroidered picture or pattern will be disturbed, causing a problem that will lead to a decrease in quality.

Therefore, in the present invention, in order to solve the above problem, the front inner surface of the hat is in contact with the curved surface around the embroidery hole on the base side of the embroidery hole, and the hat is With the hat attached to the curved fabric upholstery frame with the eaves standing up, the eaves of the hat can be pulled down and a fabric presser for the eaves is provided to fix the eaves in that state, so that the eaves can be pulled down. This utilizes the tension in the center of the hat that occurs when it is folded down, thereby reducing the deflection of the center of the front of the hat.

The drawings showing the embodiments of the present application will be described below. Figure 1 shows the entire embroidery sewing machine.
Reference numeral 2 indicates a machine frame, and 2 indicates a head whose base is attached to the upper surface of the machine frame 1. Although two heads 2 are provided in the drawing, there may be one or three or more heads 2. Reference numeral 3 denotes an embroidery needle provided at the tip of the head 2, which is movable up and down as is well known. 4 is head 2
This is a bed disposed below the embroidery needle, the base of which is fixed to the machine frame 1, and the tip of which is provided with a needle plate 5 having a hole 5a facing the embroidery needle 3, as shown in FIGS. 2 and 5. ing. Also, as is well known, there is a pot inside. Reference numeral 6 denotes a movable frame placed on the upper surface of the machine frame 1, which is moved in the front and back direction (arrow 7) by a moving mechanism (not shown).
direction) and left/right direction (arrow 8 directions) based on a predetermined program or the like. Next, reference numeral 9 denotes a cylindrical curved upholstery frame disposed above the bed 4, which is moved back and forth by the back and forth movement of the movable frame 6, and is moved along its own axis by the left and right movement of the movable frame 6. Figures 2 to 6 so that it can be rotated around
It is configured as shown in the figure. This curved cloth frame 9
Although only one bed 4 portion is shown in FIG. 1, this curved upholstery frame 9 is provided in both bed 4 portions, respectively. In addition, when the curved fabric tensioning frame 9 is not provided, a known fabric tensioning frame is attached to the movable frame 6 so that embroidery can be performed by a known method. In the curved fabric upholstery frame 9, reference numeral 10 denotes a frame body formed in a hollow cylindrical shape, and as shown in FIG. It is composed of two main bodies 12. 1
Reference numeral 3 designates a plurality of fitting recesses formed on the end surface of one end of the first main body 11. 14 is the second main body 1
2 is a fitting protrusion formed on one end side of the second main body 12 and the second main body 11 is fitted into the fitting recess 13 with the axes of the second main body 12 and the first main body 11 being the same, so that the first main body 11 and the second main body 11
It is formed so as to be able to prevent relative rotation of the main body 12 about its axis. 15 is an engagement hole formed in the first body 11, 16 is a screw hole formed in the second body 12, and 17 is attached to the outer periphery of the second body 12 by a mounting screw 18 screwed into the screw hole 16. The attached connecting body has a spring property, and the distal end thereof is formed with an engaging part 19 that projects toward the center of the frame body 10, as shown in FIG. The first body 11 and the second body 1 are engaged with each other.
2 from separating in the axial direction. A plurality of these connecting bodies 17 are used. Reference numeral 20 denotes a curved cloth upholstery surface formed on the upper side of the frame body 10, which is formed in an arc shape centered on the axis of the frame body 10, and has a semicylindrical upper surface. This curved cloth surface 20 is a hat 2 exemplified as an object to be sewn (also called curved cloth).
This is a surface for abutting the outer circumferential portion of 1, and although it is formed into an arcuate surface in the drawing, it may be formed into a polygonal surface consisting of a plurality of planes. One end of the curved fabric upholstery surface 20 is formed as a free end so that it can be fitted into the opening of the hat 21 and placed over it. 22 is the frame body 1
A storage space is formed inside the storage space 22, and is formed so that the bed 4 can be placed in this storage space 22 as shown in FIGS. 9 and 8. Also,
This storage space 22 is formed to have a sufficient size so that the frame body 10 can be rotated by a predetermined amount around its axis. Reference numeral 23 denotes a through hole for embroidery formed in the curved cloth surface 20 of the second main body 12, which has a wide area like a window (for example, width is 14 cm, depth is (area consisting of 6.5 cm). Hereinafter also referred to as embroidery window. This window 23 is formed into a through hole so that the embroidery needle 3 can be inserted from the upper side of the second main body 12 toward the inner bed 4. Reference numeral 24 denotes a cloth presser whose one end is fixed to the outer periphery of the second main body 12 and is made of a material having spring properties. It is designed to hold cloth. A plurality of presser feet 24 are attached to the second main body 12. Among these, the cloth presser located at a position facing the eaves 21a, that is, on the base side of the embroidery holes, is in a state in which the front surface of the hat overlaps the embroidery holes and the eaves of the hat stands up. When a hat is attached to the curved cloth upholstery frame, a cloth presser for the eaves is provided for fixing the eaves of the hat in a pulled down state. Reference numeral 25 denotes a fitting gear exemplified as a driven coupling portion formed on the outer periphery of the first main body 11, and includes a large number of engagement teeth 2 protruding from the outer periphery of the first main body 11.
5a. This fitting gear 25
The first main body 11 serves both as a rotating connecting portion for rotating the first main body 11 in a direction along the curved fabric tension surface 20 and as a forward/retracting connecting portion for moving the first main body 11 in the axial direction. Incidentally, the rotational connection portion and the forward/backward movement connection portion may be provided in separate locations. Next, reference numeral 26 denotes a frame support device for supporting the curved fabric upholstery frame 9, which supports the curved fabric upholstery frame 9 so as to be rotatable around an axis and movable forward and backward in the direction of the axis. In this frame support device 26, 27 indicates the machine frame 1 as shown in FIG.
28 is a guide rail fixedly attached to the support bracket 27;
A guide recess 28c is formed by the bottom wall 28a and both side walls 28b, 28b. This guide recess 2
8c is set to be in the same direction as the longitudinal movement direction of the movable frame 6. Moreover, the above-mentioned both side walls 28b
A guide groove 29 extending substantially horizontally is formed inside each of the guide grooves 29 . As shown in FIG. 7, 30 is a movable body whose both sides are fitted in the guide groove 29 so as to be movable in the longitudinal direction, and is located within the guide recess 28c. 31 is a mounting plate fixed to the upper surface of the moving body 30; 32 and 33 are columns fixed to the mounting plate 31; 34 is a support arm fixed to the column 32;
Support arms 35 and 36 are fixed to the support column 33. 37 is a groove gear rotatably supported by the support arm 34, and flanges 37 are provided on both sides of the gear 37a.
b, 37b are fixed to each other. This gear 37a is formed to mesh with the fitting gear 25, and a groove 37c between both flanges 37b, 37b.
The width of the fitting gear 25 is set so that the fitting gear 25 can be fitted therein. A groove gear 38 is rotatably supported by the support column 32, and is constructed in the same manner as the groove gear 37. 39 is a roller that is rotatably supported on the support column 33; 40 and 41 are rollers that are rotatably supported on support arms 35 and 36;
41 are arranged so as to be able to rotatably support the outer peripheral lower surface of the second main body 12, as shown in FIG. As shown in FIGS. 8 and 9, in the curved fabric upholstery frame 9, the fitting gear 25 is fitted and placed on the groove gears 37 and 38, and the lower surface of the second main body 12 is connected to the rollers 39 to 38.
41, and in this state, the bed 4 is positioned above the storage space 22, and the upper surface of the throat plate 5 is placed on the first
As shown in FIGS. 0 and 11, it is brought close to the curved fabric upholstery surface 20. Next, 42 is the movable frame 6
A transmission frame is fixed to the frame by a mounting screw 43, so that the curved fabric upholstery frame 9 can be rotated around its axis or moved back and forth in the direction of its axis by the movement of the movable frame 6. It is configured. This transmission frame 42
, 44 is a frame body, and 45 is a fitting groove formed in the frame body 44, which is formed so that the fitting gear 25 can be fitted therein. 46 is a rack attached to the bottom surface of the fitting groove 45, and has rack teeth 46a that can mesh with the fitting gear 25. The fitting gear 25 placed on the groove gears 37 and 38 is fitted into the fitting groove 45 as shown in FIGS. 2 and 9, and the rack 46 is meshed with the fitting gear 25. ing.

In the case of the structure described above, when it is desired to embroidery (sewn a picture or a pattern) on the front outer circumference of the hat 21, which is exemplified as a curved cloth, for example, the connecting body 1
7 from the engagement hole 15 and remove the second body 12 of the curved fabric upholstery frame 9 from the first body 11 as shown in FIG.
A hat 21 is attached to 2. The cap 21 is attached to the second body 12 as shown in FIG.
The cap 21 is placed over the free end of the cap 21, the part of the cap 21 to be embroidered is placed in the center of the embroidery window 23, and the cap 21 is placed against the curved fabric surface 20. and the outer peripheral surface of the second main body 12. Further, the eaves 21a is pulled down and clamped with a cloth presser foot 24 for the eaves to fix it in a pulled down shape. In this way, the eaves rotate using the left and right ends as fulcrums, and the cloth surface in the center of the hat is stretched. Thereafter, the fitting convex part 14 of the second main body 12 is fitted into the fitting recess 13 of the first main body 11, and the engaging part 19 of the connecting body 17 is inserted into the engaging hole 1.
5 to integrally connect the second body 12 to the first body 11 as shown in FIG. With the second main body 12 connected to the first main body 11 in this way, as shown in FIGS. It is located directly above the plate 5 and below the embroidery needle 3. After that, when you start the embroidery machine, the embroidery needle 3 will appear.
moves up and down to sew the embroidery thread onto the part of the hat 21 to be embroidered, and the movable frame 6 is moved back and forth and left and right in accordance with a preset embroidery pattern. When the movable frame 6 is moved in the front-rear direction in this way, the fitting gear 25 of the curved fabric upholstery frame 9 fits into the fitting groove 45 of the transmission frame 42.
are fitted together, and the fitting gear 25 is connected to the movable body 3.
Since it is fitted into the groove 37c of the groove gears 37 and 38 on the upper part of the groove, the curved fabric upholstery frame 9 can be integrally moved in the front and rear direction while moving the movable body 30 in the front and rear direction along the guide grooves 29 and 29. let Further, when the movable frame 6 is moved in the left and right direction, the curved fabric upholstery frame 9 is moved by the rollers 39 to 4.
1 and groove gears 37 and 38, and the fitting gear 25 is meshed with the groove gears 37 and 38, and the rack teeth 46a of the transmission frame 42 are meshed with the fitting gear 25. Therefore, the rack 46 rotates the fitting gear 25, thereby rotating the curved fabric upholstery frame 9 about the axis located below the hook. Therefore, the part to be embroidered on the cap 21 stretched over the embroidery window 23 is integrally moved back and forth by the back and forth movement of the movable frame 6, and by the left and right movement of the movable frame 6. As shown in FIG. 11, the cap 21 is moved left and right, and thereby a predetermined embroidery pattern is embroidered on the portion of the hat 21 to be embroidered. The area to be embroidered becomes wider as the embroidery window is enlarged. If you want to embroidery in a position that is unevenly distributed from the center of the hat, it is better to change the set and perform the embroidery.

By preparing a plurality of second bodies 12, the hat 21 can be attached to the second body 12 while another hat is being embroidered using an embroidery sewing machine. Further, the cap 21 may be attached to the second body 12 while the second body 12 is connected to the first body 11 as shown in FIG.

Next, Figures 12 to 14 show examples of attaching and utilizing items other than hats to the curved fabric upholstery frame.
The figure shows a sock 21e that can be expanded and contracted by its own elasticity.
In this case, the socks 21e are embroidered.
Cover the tip of the frame body 10e to make the sock 21e.
It is sufficient if it is fixed to the curved fabric upholstery surface 20e by the elasticity of.

It should be noted that the same reference numerals as those in the previous figure are appended with an alphanumeric letter "e" for parts that are functionally the same or equivalent to those in the previous figure, and redundant explanations are omitted.
(Furthermore, in the following figures, the same concept is applied and the alphanumeric characters f, g, h, i, and j are sequentially attached to omit the redundant explanation.) Next, Fig. 13 shows a long cylindrical object. The case where embroidery is carried out on the sleeve 21f of a dress shirt is shown. In this case, after fitting the sleeve 21f into the frame main body 10f and positioning the part to be embroidered above the embroidery window 23f, two rubber bands 47, Embroidery window 2 by 48
The sleeve 21f is fixed to the curved fabric upholstery surface 20f on both sides of the sleeve 3f. By doing this, sleeve 21
The cloth f can be held tightly stretched over the embroidery window 23f, and embroidery can be performed correctly.

Next, FIG. 14 shows the case where a mark or the like is embroidered on the chest pocket 21g of the shirt. In the presser foot 24g, reference numeral 49 denotes a presser piece pivotally mounted to be able to swing up and down, and its tip end is biased by a spring (not shown) so as to rotate downward. Clothing cloth 50 is fixed to the lower surface of the tip of this presser piece 49, and the cloth needle 50 is adapted to press the cloth. Note that the presser piece 49 may be constructed of a spring plate fixed to the frame body 10g.

Next, FIG. 15 shows a different example of the embroidery window of the curved fabric upholstery frame, in which the embroidery window 23h is formed by a notch groove formed in the free end of the frame body 10h.

Next, FIGS. 16 to 18 show different embodiments of the curved fabric upholstery frame, frame support device, and drive device. The curved fabric upholstery frame 9i of this embodiment has a cylindrical lower side that is 1/4
It is constituted by a frame body 10i which has a partially removed shape. This frame main body 10i is composed of one member, and its upper surface is a semicylindrical curved cloth surface 20i. In the frame support device 26i for the curved fabric upholstery frame 9i, 51 is a long support rod, which is rotatably supported and movable in the axial direction by a support (not shown) attached to the machine frame. 52, 53
A support arm is fixed to the support rod 51, and its distal end is fixed to the inner surface of the frame body 10i, and serves as a coupling portion for advancing and retracting the frame body 10i and a coupling portion for rotating the frame body 10i. These support arms 52 and 53 are connected to the support rod 51
These support arms 52,
The frame main body 10i is supported by the support rod 51 by 53. As shown in FIG. 17, the support rod 51 is located at the center of curvature of the outer peripheral surface of the frame body 10i. Reference numeral 54 denotes a gear fixed to the end of the support rod 51, and the support rod 51 is moved back and forth in the axial direction and rotated by a drive device 55. In this drive device 55, reference numeral 56 denotes a guide square rod with a square cross section that is movably supported by a bearing (not shown), which is disposed parallel to the support rod 51 and rotated forward and backward by a motor 57. It's becoming like that. Reference numeral 58 denotes a moving body fitted to the guide square rod 56 so as to be slidable in the axial direction. Reference numeral 59 denotes a gear provided on the outer periphery of the moving body 58. Flanges 60, 60 are provided on both sides of this gear 59. A groove 61 is formed between these flanges 60, 60. The gear 54 is fitted into the groove 61, and the gear 54 is meshed with the gear 59. 62
is a fitting groove formed on the outer periphery of the movable body 58, into which the tip of the operating rod 63 is fitted. 64 and 65 are a pair of pulleys, and an endless timing belt 66
is at stake. One transition portion 66a of the timing belt 66 is disposed parallel to the guide square rod 56, and the base of the operating rod 63 is fixed to this transition portion 66a. One of the pulleys 64 is rotated in forward and reverse directions by a motor 67. The motors 57, 67 are operated according to the embroidery pattern to be embroidered.

In the structure described above, when the motor 57 operates and rotates the guide square rod 56, the movable body 58 and the gear 59 are rotated, and the gear 54 and the support rod 51 are rotated.
is rotated, thereby rotating the curved cloth covering frame 9i and moving the curved cloth from side to side. Further, when the motor 67 operates to rotate the timing belt 66, the operating rod 63 is moved back and forth, causing the sliding body 58 to slide back and forth, thereby moving the support rod 51 and the curved fabric upholstery frame 9i back and forth. Move the cloth back and forth. Therefore, predetermined embroidery can be performed on the curved fabric of the hat.

Next, FIG. 19 shows an embodiment in which the bed position with respect to the curved fabric upholstery frame 9j is different.As shown in the cross-sectional shape of the bed 4j, the needle hole position in the central part facing the needle 3j is higher than that on both sides. It was formed as follows. In this embodiment, the frame body 10
When the front curved cloth 21j of the hat attached to the hat is flexible, it hangs down toward the bed 4j from the rotation locus 10R of the curved cloth upholstery frame 9j at the embroidery window 23j, and comes into contact with the upper surface of the bed 4j when it is attached. Curved cloth 2
1j moves while being lifted up.

Next, FIGS. 20 and 21 show different embodiments of the curved cloth covering frame, which can be applied when embroidering the curved cloth on the front side of a baby hat.
The base of the curved fabric upholstery frame 9k of this embodiment is formed in a shape similar to that shown in FIG. 6, and the tip is tapered as shown. In addition, the front shape of the tip is formed in an arc shape centered on the rotation center 10a of the frame main body, as shown in FIG. 21, so that even if the cloth frame 9k rotates, it will not collide with the bed 4k. It is set as.

As described above, the present invention includes a bed provided with a hook, an embroidery needle that can freely move up and down toward the hook, and a connection between the needle and the bed when the needle is in the raised position. The curved fabric upholstery frame has a curved fabric upholstery frame disposed between the pot so as to be rotatable left and right with the lower position of the hook as the center of rotation, and to be freely movable forward and backward. The outer circumferential surface of the hat is formed into a semicylindrical curved surface, and the curved surface has an embroidery hole with a larger area than the embroidery attached to the front of the hat, and the embroidery hole is located closer to the base than the embroidery hole. To do this, place the front inner surface of the hat in contact with the curved surface around the embroidery hole, raise the eave of the hat, and attach the hat to the curved fabric upholstery frame. Since it is equipped with a cloth presser for the eaves to fix the eaves by pulling down the eaves, when the eaves 21a is pulled down while the hat 21 is attached to the curved fabric upholstery frame 9, the front of the hat will be pulled down. By fixing the cap with a presser foot even when it is in a tensioned state, there is an advantage that tension can be maintained in the central part of the embroidered part 21b on the front side of the hat even if the embroidery hole is large. This has the effect of accurately maintaining the tensile state of the front central portion of the cap 21 and allowing beautiful embroidery to be done there.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view showing the entire embroidery sewing machine, FIG. 2 is a perspective view showing the curved fabric upholstery frame, FIG. 3 is a sectional view taken along the - line, and FIG. is an exploded perspective view of Figure 2, Figure 5 is a perspective view of the second body removed from the curved fabric upholstery frame of Figure 2, and Figure 6 is a perspective view of the second body with a hat attached. Figure 7 is a view from the direction of the arrow.
Fig. 8 is a sectional view taken along the - line, Fig. 9 is a sectional view taken along the - line, Fig. 10 is an enlarged view of the main part of Fig. 8, Fig. 11 is a sectional view showing the operating state of Fig. 10, and Fig. 12 is a sectional view taken along the - line. An explanatory diagram showing a case where socks are attached to a curved fabric upholstery frame for embroidery, Fig. 13 is an explanatory diagram showing a case where embroidery is performed on the sleeve of a dress shirt using a curved fabric upholstery frame, and Fig. 14 is an explanatory diagram showing a case where socks are attached to a curved fabric upholstery frame for embroidery. An explanatory diagram showing the case of embroidering with a shirt pocket attached, Fig. 15 is a perspective view showing different examples of the embroidery window, Fig. 16 is a perspective view showing different embodiments of the curved fabric upholstery frame, Fig. 17 is 18 is a perspective view showing the driving device for the curved fabric upholstery frame shown in FIG. 16; FIG. 19 is a sectional view showing a different embodiment of the curved fabric upholstery frame and the bed; FIG. 20 21 is a perspective view showing a different embodiment of the curved fabric upholstery frame, and FIG. 21 is a front view showing the relationship between the curved fabric upholstery frame and the bed in FIG. 20. 9... Curved cloth upholstery frame, 10... Frame body, 23... Embroidery window, 25... Driven connection portion.

Claims (1)

[Claims] 1. A bed equipped with a hook, an embroidery needle that can freely move up and down toward the hook, and when the needle is in the raised position, the lower position of the hook is the center of rotation between the needle and the bed. The curved fabric upholstery frame has a curved fabric upholstery frame which can be freely rotated left and right and can be moved forward and backward. The curved surface has an embroidery hole with a larger area than the embroidery to be applied to the front of the hat, and the embroidery hole has an area around the embroidery hole on the base side of the embroidery hole. To secure the eaves by bringing the front inner surface of the hat into contact with the curved surface of the hat, and with the eaves of the hat erected and the hat attached to the curved fabric tension frame, pull down the eaves to pull the front of the hat. An embroidery sewing machine characterized by being equipped with a presser foot for the eaves.