JP4136515B2 - Sewing machine and embroidery method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In the present invention, a needle punch needle provided with a heel is inserted into a base cloth and a base cloth overlapped with the base cloth, so that the hook catches the fiber of the base cloth and the fiber of the base cloth is applied to the surface of the base cloth. the present invention relates to a sewing machine to perform the embroidery pressurized Engineering by the needle punch pressure Ko及 beauty embroidery needle to form a needle punch pattern to bring out. The present invention also relates to a method for forming a needle punch pattern and an embroidery pattern.
[0002]
[Prior art]
As a sewing machine that performs the above-described needle punching and embroidery processing, a base fabric having a top surface overlaid with a base cloth is stretched and held on an embroidery frame, and a needle punch needle is pierced from above onto the base fabric and the base cloth. There is known a sewing machine that can perform needle punch processing for forming a needle punch pattern on the lower surface of the sewing machine and embroidery processing using an embroidery needle (Japanese Patent Laid-Open No. 11-172666).
[0003]
[Problems to be solved by the invention]
This conventional sewing machine has a problem that the needle punch pattern cannot be visually confirmed because the needle punch pattern is formed on the lower surface of the base fabric during needle punching. In addition, since the embroidery pattern is formed on the top surface of the patch or base fabric during the embroidery processing, when shifting from the needle punch processing to the embroidery processing, the base fabric can be embroidered on the surface on which the needle punch pattern is formed. It was necessary to remove the cloth and the patch from the embroidery frame and turn it over. Also, when shifting from embroidery processing to needle punching processing, it is necessary to remove the base cloth and the backing cloth from the embroidery frame and turn them over. Therefore, although the conventional sewing machine can perform needle punching and embroidery, it is essential to remove the base cloth and the backing cloth from the embroidery frame and turn them over when performing both processes. The interruption of processing work was inevitable and the efficiency was poor.
[0004]
Therefore, a first object of the present invention is to make it possible to visually confirm a needle punch pattern. A second object of the present invention is to improve work efficiency by allowing needle punching and embroidery processing to be performed continuously without interruption.
[0005]
[Means for Solving the Problems]
The sewing machine according to the reference invention for achieving the first object pierces from above the base cloth and the base cloth laminated on the lower side of the base cloth, and when the upper part is pulled out, the partial fiber of the base cloth Is provided with a needle punch needle that forms a needle punch pattern on the upper surface of the base fabric by hooking and pulling on the upper surface of the base fabric.
[0006]
To achieve the above first and second objects, the sewing machine according to the present invention, piercing from above and patch cloth superimposed on the lower side of the base cloth and base cloth patch cloth when withdrawn upwards A needle punch needle that forms a needle punch pattern on the upper surface of the base fabric by pulling a part of the fiber and pulling it on the upper surface of the base fabric, and the upper thread is passed through and pierced the base fabric and the backing fabric from above. An embroidery needle that forms an embroidery pattern on at least the upper surface of the base fabric by the cooperation of the lower thread and the upper thread of the hook below the cloth and the patch is provided.
[0007]
The cross-sectional shape of the needle punch needle is not particularly limited, and examples thereof include a cylindrical shape and a prismatic shape (for example, a triangular prism shape and a quadrangular prism shape).
[0008]
The method of providing the needle punch needle is not particularly limited, but when piercing the base cloth and the backing cloth, do not catch the base cloth fiber so that the base cloth is not damaged, and the fiber is hooked only when it is pulled out. Preferably, the following two modes can be exemplified for this purpose.
(1) A mode in which a concave portion is formed on the surface of the needle punch needle, and the concave portion is formed so as to extend from the distal end edge of the concave portion toward the proximal end edge of the needle.
(2) A mode in which the needle punch needle is provided so as to protrude obliquely from the distal end side toward the proximal end side.
[0009]
The position of the heel is not particularly limited, but is appropriately set on the outer periphery of the needle punch needle at an equal angle of, for example, 10 degrees to 180 degrees. Moreover, the number of wrinkles provided in one needle punch needle is not particularly limited, but is appropriately set within a range of 1 to 50, for example.
[0010]
The means for attaching the needle punch needle to the sewing machine is not particularly limited, but the needle support member to which the needle punch needle is attached may be screwed to the needle bar, or the needle may be screwed directly to the needle bar.
[0011]
When the needle punch needle is pulled out from the cloth, the heel hooks the fiber, and the base cloth and the backing cloth are pulled up with a stronger force than before, and therefore it is preferable to provide a cloth presser on the needle punch needle.
[0012]
The correspondence between the needle punch needle and the embroidery needle and the sewing machine head can be exemplified by the following two modes.
(A) A mode in which a sewing head having a needle punch needle and another sewing head having an embroidery needle are provided separately.
In this case, a sewing head having a needle punch needle and another sewing head having an embroidery needle may be driven synchronously, or one of them may be selected and driven.
(B) A mode in which a sewing head having both a needle punch needle and an embroidery needle is provided.
In this case, the needle punch needle and the embroidery needle may be driven in synchronism or may be selected and driven.
[0013]
In the embroidery method for an embroidery product according to the present invention, a needle punch needle is stabbed from above into a base cloth and a base cloth superposed on the bottom side of the base cloth, and the base cloth is hooked with the fiber of the base cloth when pulling out upward. The needle punch pattern is formed on the upper surface of the base fabric by pulling it out to the upper surface of the fabric, and the embroidery needle through which the upper thread is passed is inserted into the base fabric and the application fabric from above, and under the hook below the base fabric and application fabric. It is characterized by eliminating the need to turn over the base fabric and the backing fabric by forming an embroidery pattern on at least the upper surface of the base fabric in cooperation with the yarn.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of a sewing machine embodying the present invention will be described with reference to FIGS. The sewing machine according to the present embodiment includes a plurality of (two in the illustrated example) sewing heads 12 provided with needle punch needles 6 and another plurality (in the illustrated example) including embroidery needles 7 at a predetermined interval on the table 1. The two sewing heads 32 are provided alternately, and are composed of the sewing head 12 and the motor 2 that drives the sewing head 32.
[0015]
A square frame-shaped sewing frame 3 is placed on the upper side of the table 1, and the sewing frame 3 is placed in the X direction (left and right direction in FIG. 1) and Y direction (in FIG. 1) by a sewing frame driving device (not shown). It is driven in the front-rear direction). The sewing frame 3 is stretched and held by a base cloth 4 to be described later and an application cloth 5 superimposed on the lower side of the base cloth 4.
[0016]
First, the sewing head 12 including the needle punch needle 6 will be described. The sewing head 12 is pierced into the base cloth 4 and the application cloth 5 from above, and pulls a part of the fibers 5a of the application cloth 5 when being pulled upward. A needle punch needle 6 is provided that forms a needle punch pattern 16 on the upper surface of the base cloth 4 by being hung and pulled on the upper surface of the base cloth 4.
[0017]
A needle bar 14 is supported inside the sewing head 12 so as to be vertically movable. A needle support member 15 is attached to the lower end of the needle bar 14.
[0018]
The needle support member 15 includes a flat square needle support portion 15a and an attachment portion 15b that protrudes above the needle support portion 15a and is screwed to the needle bar. On the lower surface of the needle support portion 15a, for example, five holes 15c in total (25 in total) are formed in the X direction and the Y direction, for example, at intervals of 5 mm.
[0019]
The base end of the needle punch needle 6 is press-fitted and fixed in each hole 15c. The needle punch needle 6 is composed of a round bar-like base end portion 6a, a triangular column-shaped intermediate portion 6b having a regular triangular cross section, and a needle tip 6c. Two recesses 6d are formed at three corners of the intermediate portion 6b at predetermined intervals in the length direction of the needle punch needle 6, and the lower edge of the recess 6d is as shown in FIGS. In addition, a ridge 6e is formed which is pulled by the upper surface of the base cloth 4 by hooking the fibers 5a of the patch cloth 5.
[0020]
A bed 13 is provided immediately below the sewing head 12. The bed 13 is provided with a needle hole 13 a having an inner diameter larger than the diameter of the needle punch needle 6 and allowing the needle punch needle 6 to enter. Each needle hole 13 a is provided at a position directly below each needle punch needle 6.
[0021]
Further, when the rotational power of the motor 2 is transmitted to the main shaft 26 via the drive pulley 21, belt 22, clutch 23, shaft 24, and transmission gear 25, the needle bar 14 is driven up and down. Yes.
[0022]
Next, the sewing head 32 provided with the embroidery needle 7 will be described. The upper thread 8 is passed through the sewing head 32 to pierce the base cloth 4 and the patch 5 from above, and below the base cloth 4 and the patch 5. An embroidery needle 7 for forming an embroidery pattern 53 is provided on the upper surface of the base fabric 4 by the cooperation of the lower thread 52 and the upper thread 8 in the hook 51.
[0023]
A plurality (five in the illustrated example) of needle bars 34 are supported inside the sewing machine head 32 so as to be vertically movable. An embroidery needle 7 is attached to the lower end of each needle bar 34. The sewing head 32 is provided with five balances 35 that are selectively driven together with the needle bar 34, a thread guide 36, a thread tensioner 37, and the like.
[0024]
Further, a spool stand 38 is provided on the upper rear side of the sewing head 32, and the upper yarn 8 passes from the spool 39 of a plurality (five in the illustrated example) of the upper yarn 8 standing on the spool stand 38 through the yarn guide 36. It is extended toward the thread tension device 37.
[0025]
A main shaft 40 for driving the needle bar 34 and the balance 35 is provided at the rear part of the sewing machine head 32. A bed 33 containing a shuttle 51 is provided immediately below the sewing head 32. The bed 33 is provided with a needle hole 33 a for allowing the embroidery needle 7 to enter a position directly below the embroidery needle 7 and feeding the lower thread 52 from the hook 51, and a hook drive shaft 41 for driving the hook 51. ing. The main shaft 40 and the shuttle drive shaft 41 are interlocked using an interlocking gear 42 and an interlocking shaft 43, and the rotational power of the motor 2 is transmitted to the drive pulley 21, the belt 22, the clutch 44, the shaft 45, and the transmission. By being transmitted through the gear 46, the needle bar 34 drives the embroidery needle 7 up and down and the shuttle 51 below the bed 33 is driven to rotate.
[0026]
In addition, the clutch 23 and the clutch 44 are connected to the motor 2 via the belt 22, and the clutch bar 23 and the clutch 44 are selectively connected, so that the needle bar 14 of the sewing head 12 and the needle bar of the sewing head 32 are connected. 34 and can be driven.
[0027]
Next, an embroidery method using the sewing machine of this embodiment will be described.
(1) Needle punch processing As shown in FIG. 5, the needle punch needle 6 is driven while the sewing frame 3 is driven based on the needle punch data.
[0028]
When the needle punch needle 6 starts to be driven downward from the top dead center position shown in FIG. 3A toward the bottom dead center position shown in FIG. Since the fibers 5a of the patch cloth 5 are not hooked, the needle punch needle 6 penetrates deeply into the base cloth 4 and the patch cloth 5 without resistance. At this time, the concave portion 6d and the heel 6e reach the lower side of the application cloth 5, but the base cloth 4 is not damaged. Subsequently, when the needle punch needle 6 starts to be driven upward, as shown in FIG. 4A, the hook 6e starts to pull the fiber 5a of the application cloth 5 and pulls upward, and the application cloth 5 is pulled by this tension. It is brought into close contact with the base fabric 4. Then, as shown in FIG. 4B, when the needle punch needle 6 is pulled out from the base cloth 4 and the backing cloth 5, the fiber 5a is pulled out to the upper surface of the base cloth 4, and a part of the needle punch pattern 16 is removed. As it is formed, the base cloth 4 and the backing cloth 5 are in close contact with each other.
[0029]
(2) Embroidery processing As shown in FIG. 6, the sewing frame 3 is driven in the X direction by substantially the same distance as the interval between the adjacent sewing heads 12 and 32, and the needle punch pattern 16 is the embroidery needle of the sewing head 32. 7 is moved to a position almost immediately below. Then, the needle bar 34 is selected and the embroidery needle 7 is driven while driving the sewing frame 3 based on the embroidery data.
[0030]
At this time, the embroidery needle 7 through which the upper thread 8 is passed is pierced into the base cloth 4 and the patch cloth 5 from above, and the lower thread 52 and the upper thread 8 of the hook 51 below the base cloth 4 and the patch cloth 5. As a result, an embroidery pattern 53 is formed on the upper surface of the base fabric 4.
[0031]
Accordingly, by performing the needle punching process (1) and the embroidery process (2), an embroidery product including the embroidery pattern 53 on the upper surface of the base cloth 4 and the needle punch pattern 16 on the upper surface of the base cloth 4 is obtained. Can be manufactured. The needle punching process (1) and the embroidery process (2) may be performed in this order or in the reverse order.
[0032]
According to the embroidery method of the present embodiment, the needle punch pattern 16 can be visually confirmed by providing the needle punch needle 6 that forms the needle punch pattern 16 on the upper surface of the base cloth 4. This is particularly effective when processing is continued while sequentially checking the state of the needle punch pattern 16 or during preliminary operation for obtaining driving instruction data when the sewing machine is automatically operated.
[0033]
Further, by providing the needle punch needle 6 that forms the needle punch pattern 16 on the upper surface of the base cloth 4 and the embroidery needle 7 that forms the embroidery pattern 53 on the upper surface of the base cloth 4, The needle punch pattern 16 and the embroidery pattern 53 can be formed on the upper surface of the base cloth 4 without turning over the base cloth 4 and the backing cloth 5 only by driving in the X direction. Therefore, needle punching and embroidery can be performed continuously without interruption, and work efficiency is improved. As a result, the time required for production of a product having a needle punch pattern and an embroidery pattern can be shortened, and the production amount can be increased.
[0034]
In addition, this invention is not limited to the structure of the said embodiment, For example, as follows, it can also change and actualize in the range which does not deviate from the meaning of invention.
(1) The sewing head 12 provided with the needle punch needle 6 is provided in the left half (or right half) of the sewing machine, and the sewing head 32 provided with the embroidery needle 7 is provided in the right half (or left half) of the sewing machine. To provide.
(2) Change to a multi-needle type sewing machine provided with a sewing head 60 having both the needle punch needle 6 and the embroidery needle 7 as shown in FIG.
(3) Although the cloth presser itself is known, it is preferable to provide the needle presser needle 6 with a cloth presser. Although it does not specifically limit as a cloth presser, as shown in FIG. 8, the cup shape in which the hole which encloses the needle support member 15 and the needle punch needle 6 and allows each needle punch needle 6 to pass through was penetrated in the bottom part. Examples include a member 50, a plate member in which a hole through which each needle punch needle 6 is allowed to pass, and an annular member that allows all needle punch needles 6 to pass inside are supported in the vicinity of the needle punch needle. .
(4) The sewing head 12 provided with the needle punch needle 6 and the sewing head 32 provided with the embroidery needle 7 are respectively driven by different motors.
(5) Change to a sewing machine configuration in which the embroidery needle 7 can embroidery on both the upper and lower surfaces of the base fabric 4.
[0035]
【The invention's effect】
Or as detailed, according to the embroidering method of the sewing machine and according to claim 4, wherein the 請 Motomeko 1, 2 or 3, wherein, may be subjected to visual check while needle punching needle punched patterns. Furthermore, needle punching and embroidery can be performed continuously without interruption, and work efficiency is improved.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a sewing machine according to an embodiment of the present invention.
FIG. 2A is a front view and FIG. 2B is a side view showing the main part of the sewing machine.
3A is a cross-sectional view when the needle punch needle is at a top dead center, and FIG. 3B is a cross-sectional view when the needle punch needle is at a bottom dead center.
4A is a cross-sectional view of the sewing machine while the needle punch needle is driven from bottom dead center to top dead center, and FIG. 4B is a cross-sectional view when the needle punch needle returns to top dead center. It is.
FIG. 5 is a perspective view showing a state of needle punching by the sewing machine.
FIG. 6 is a perspective view showing a state of embroidery processing by the sewing machine.
FIG. 7 is a perspective view showing a modified example of the present invention.
8A is a front view and FIG. 8B is a side view showing a main part of another modified example of the present invention.
[Explanation of symbols]
4 Base cloth 5 Batter 5a Textile 6 Needle punch needle 7 Embroidery needle 8 Upper thread 16 Needle punch pattern 51 Hook 52 Lower thread 53 Embroidery pattern

Claims (4)

The base fabric and the base fabric laminated on the lower side of the base fabric are pierced from above, and when the base fabric is pulled upward, the base fabric is hooked and pulled onto the upper surface of the base fabric. A needle punch needle that forms a needle punch pattern on the upper surface of the cloth;
An upper thread is passed through and pierced into the base fabric and the patch from above, and an embroidery pattern is formed on at least the upper surface of the base fabric by the cooperation of the lower thread of the hook and the upper thread below the base fabric and the patch. A sewing machine comprising an embroidery needle to be formed.   The sewing machine according to claim 1, wherein a sewing head having the needle punch needle and another sewing head having the embroidery needle are provided.   The sewing machine according to claim 1, further comprising a sewing head having both the needle punch needle and the embroidery needle. The needle punch needle is stabbed from above into a base cloth and a base cloth superposed on the lower side of the base cloth, and when pulling upward, the fibers of the base cloth are hooked and pulled out to the upper surface of the base cloth. A needle punch pattern is formed on the upper surface of the base fabric,
An embroidery needle through which the upper thread is passed is pierced from above into the base cloth and patch, and at least on the upper surface of the base cloth by the cooperation of the lower thread of the hook and the upper thread below the base cloth and patch. An embroidery method characterized in that it is not necessary to turn over the base fabric and the covering fabric by forming an embroidery pattern.

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