JPH0523459A - Embroidery sewing machine - Google Patents

Abstract

PURPOSE:To execute embroidery with high consistency to one part by two embroidery sewing machines by forming a moving frame to be freely movable so that a specific part of embroidery on the cloth surface sewn by a needle of one needle bar can be moved to a position in which it can be sewn by a needle of another needle bar placed in parallel. CONSTITUTION:By a data signal of a tape reader 104, a controller 11 sends a control signal to each driver 96, 98, 101 and 103. As a result, the driver 98 drives a motor 97 and operates a needle bar 24 by a main shaft 7. Also, the driver 96 drives motors 90, 93 so as to a moving frame 10 by a prescribed amount in the X and the Y directions. As for this movement, the controller 11 executes it by synchronizing with a vertical motion of the needle bar 24 by a detecting signal of a position coder 99. Subsequently, in parallel to this sewing, a shaft 8 turns by the driver 101 and a bobbin turns around the needle bar, and the driver 103 turns a shaft 9 and converts the direction of a nipple in accordance with the moving direction of the moving frame 10, and changes the direction of a thread-through hole.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides an embroidery sewing machine capable of performing embroidery sewing of different embroidery patterns on a specific portion of a cloth surface by using a plurality of embroidery sewing machines.

[0002]

2. Description of the Related Art A plurality of embroidery sewing machines may be used to sew a variety of embroidery patterns rather than one embroidery sewing machine.

[0003]

Conventionally, when it is desired to add a beautiful pattern to an embroidery pattern sewn by one embroidery sewing machine by using another embroidery sewing machine, it is possible to add the previous pattern and the later pattern. There is a problem that it is very difficult to match the pattern with the pattern.

The present invention has been made to solve the above-mentioned problems (technical problems) of the prior art. After the embroidery sewing is performed by one embroidery sewing machine, the cloth frame is attached to the adjacent embroidery sewing sewing machine. By moving the sewing machine, it is possible to sew a matching embroidery pattern at one specific place with two embroidery sewing machines.

[0005]

In order to achieve the above object, an embroidery sewing machine according to the present invention has a needle bar (above and above the table surface) which is vertically movable toward a needle lower position on the table surface. The embroidery sewing is performed on the cloth attached to the moving frame that moves vertically and horizontally on the table surface by arranging a plurality of embroidery sewing machines equipped with 24) side by side and operating the needle bars (24) up and down. In the embroidery sewing machine shown in FIG. 1, the moving frame is a needle provided on one needle bar (24).
The specific position of the embroidery on the cloth sewn in (29) can be sewn with the needle (29) provided on the needle bar (24) of another embroidery sewing machine that is juxtaposed. It is a mobile unit that can be moved freely.

[0006]

When the moving frame is moved to the corresponding needle lower position of another sewing machine after sewing with one embroidery sewing machine, the latter sewing machine can continue to sew the same embroidery pattern.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. Mainly in FIG. 1, 1 is a known table, 2,
Reference numeral 3 denotes a standing frame which is erected on the table, and 4 denotes a horizontal frame which is erected between the standing frames 2 and 3. Reference numeral 5 denotes a bed for a normal embroidery sewing machine (hereinafter, also referred to as an A sewing machine), and a plurality of beds are attached to the lateral frame 4 at a fixed interval from each other. 6
Is a head of a design thread sewing machine (hereinafter also referred to as B sewing machine), and a plurality of heads are attached to the horizontal frame 4 at intervals equal to the intervals between the A sewing machines. As a result, in FIG. 1, the intervals between each A sewing machine and each B sewing machine located on the right side are all equal. Reference numerals 7, 8 and 9 denote a main shaft, a winding operation shaft, which are provided so as to pass through the respective sewing machines 5 and 6,
The nipple operation axis is shown. A moving frame 10 is designed to move along the table surface (upper surface) 1a of the table 1 in the arrow X and Y directions. The stretched cloth book frame can be attached. Reference numeral 11 indicates a control device.

Next, the drawings (mainly FIGS. 2 and 3) showing the structure of the B sewing machine in detail will be described. A base frame 15 is fixed to the horizontal frame 4. In the sewing mechanism provided in the base frame 15, a support 16 fixed to the base frame 15 is formed in a tubular shape. Reference numeral 17 denotes an elevating cylinder provided in the support 16 so as to be rotatable and vertically movable, and 18 denotes a nipple fixed to the lower end of the elevating cylinder 17, having a through hole 19 for threading a needle and a threading hole 21. Reference numeral 20 indicates a holding portion. Reference numeral 22 is a transmission cylinder disposed in the elevating cylinder 17, and is rotatably supported by a support arm 23 fixed to the base frame 15. The relationship between the transmission cylinder 22 and the elevating cylinder 17 is that the rotation of the transmission cylinder 22 is transmitted to the elevating cylinder 17 by a slide key provided between them, but the up and down movement of the elevating cylinder 17 is not transmitted to the transmission cylinder 22. As is well known in the art. A needle bar 24 is arranged in the transmission cylinder 22 so as to be vertically movable, and is supported by a bearing 25. The needle bar is hollow and has an upper thread introducing hole 26, an upper thread deriving hole 27, a core thread deriving hole 28 and the like formed in its side wall. A needle 29 is attached to the lower end. Reference numeral 30 denotes an upper thread guide cylinder which is attached to the base frame 15 so as to face the introduction hole 26. Reference numeral 33 is a rotary base frame rotatably mounted on the outer periphery of the support body 16, and a gear 34 exemplified as a passive member for receiving a turning force is integrally formed and provided on the upper end thereof. Reference numeral 35 is a support arm attached to the rotating base frame 33, and a bobbin 36 around which a winding thread is wound is rotatably attached to a shaft piece provided at the tip end portion thereof. 37 is the core of the bobbin. Reference numeral 38 denotes a winding thread guide protruding from the support arm 35. Reference numeral 39 is a thread guide piece attached to the base frame 33, and a thread threading hole 40 for threading a winding thread is formed as shown in FIG.

Next, a drive mechanism for receiving the drive force from the drive shafts 7, 8, 9 to drive the mechanism for sewing will be described. 43 is a transmission shaft and bearings 44, 45
Is rotatably supported by a pair of transmission gears 46.
It is connected to the main shaft 7 via. Reference numeral 51 is a drive wheel fixed to the other end of the transmission shaft 43, 53 is a known balance drive mechanism, which is linked to a pin 52 mounted at an eccentric position of the drive wheel 51, and the balance is generated by the rotation of the drive wheel 51. 53a is operated in a known manner. Reference numeral 54 is a crank rod, one end (upper end) of which is connected to the pin 52 via a balance drive mechanism 53. Reference numeral 55 is a transmission member fixed to the needle bar 24, and the other end (lower end) of the crank rod 54 is connected to a connecting piece 56 protruding from the back surface. Reference numeral 57 is an interlocking member which is freely fitted in the needle bar 24 so as to be slidable in the axial direction thereof, and is urged downward by a spring 58 provided on the outer peripheral side of the needle bar 24. 59
Is a connecting portion provided on the upper end of the elevating cylinder 17, and the connecting groove 60
Is installed around. Reference numeral 61 denotes a connecting frame, which is loosely fitted in the groove 60 so as to allow the lifting cylinder 17 to rotate with respect to the frame 61. 62
Is an interlocking rod, which is inserted vertically into the bearing 63,
The base 57a of the interlocking member 57 is provided at the upper end thereof, and the connecting frame 61 is provided at the lower end thereof.
The base portion 61a of each of these is fixed. Next, 67 is a transmission shaft, which is rotatably supported by bearings 68 and 69, and is connected to the winding operation shaft 8 via a pair of transmission gears 70. 71 is a transmission shaft, which is rotatably supported by a bearing 72,
It is connected to the transmission shaft 67 via a pair of transmission gears 73.
Reference numeral 74 is a gear wheel exemplified as a driving member attached to the lower end of the shaft 71, and is connected to the gear wheel 34 via a gear wheel 75 rotatably attached to the base frame 15. Next, 77 is a transmission shaft, and bearings 78, 79
It is rotatably supported by and is linked to the nipple operating shaft 9 via a pair of transmission gears 80. Reference numeral 81 denotes a transmission gear attached to the end of the shaft 77, which meshes with the transmission gear 82 attached to the transmission cylinder 22. Reference numerals 83 to 85 are known members, 83 is a needle plate, 84 is a lower shaft interlocking with the main shaft 7, and 85 is a shuttle.

Next, a diagram (mainly FIG. 4) showing a control mechanism of the multi-head sewing machine having the above structure will be described. First move frame 10
In the drive mechanism of 90, 90 is a pulse motor, and its rotation axis
A rack in which the pinion 91 attached to 90a is connected to the moving frame 10.
It is engaged with 92 so that the moving frame 10 can be moved in the direction of arrow X. 93 is a pulse motor, its rotation axis
A rack in which the pinion 94 attached to 93a is connected to the moving frame 10.
It engages with 95, and moves the moving frame 10 in the direction of arrow Y. Reference numeral 96 denotes a driver, which has a well-known structure so that the motors 90 and 93 can be operated in response to a control signal from the control device 11. 97 is a motor connected to the main shaft 7,
A driver 98 operates the motor 97 in response to a control signal from the control device 11. Reference numeral 99 is a position coder connected to the spindle 7, and detects the state of the spindle 7 (therefore, the state of the needle bar 24 which responds to it) and gives the detection signal to the controller 11. 100 is the winding operation axis 8
A motor 101 connected to the driver 101 is a driver that can operate the motor 100 in response to a control signal from the control device 11. 102 is a motor connected to the nipple operating shaft 9,
Reference numeral 103 denotes a driver, which can operate the motor 102 in response to a control signal from the control device 11. A tape reader 104 reads the above data from a tape 105 in which data such as characters to be sewn and patterns is stored in advance, and supplies the data signal to the control device 11.

Next, the operation of the above configuration will be described. First, the operation of the mechanism shown in FIGS. 2 and 3 will be described.

(1) When the main shaft 7 rotates, its turning power is a sign
It is transmitted to the balance drive mechanism 53 via members such as gears, shafts, wheels, and shafts indicated by 46, 43, 51, 52, and the mechanism 53 causes the balance 53 to move.
Drive a as is known. The driving force is transmitted to the needle bar 24 through the cranks, pins, and transmission members indicated by reference numerals 54, 56, 55, and the needle bar 24 moves up and down. As a result, the needle 29 performs a well-known vertical movement reaching the shuttle 85 through the through hole 83a of the needle plate 83.
The elevator cylinder 17 also moves up and down in conjunction with the up and down movement of the needle bar 24.
That is, the downward movement of the transmission member 55 integrated with the needle bar 24 causes the interlocking member 57 on the elevating cylinder contacting the transmission member 55 to be moved downward by being urged by the spring 58. The downward movement is transmitted to the elevating cylinder 17 through the connecting members indicated by reference numerals 62, 61, 60, 59, and the lower end cloth pressing portion 20 of the elevating cylinder 17 is in a state of preceding the needle 29 and in a state of being integrated with the needle bar. Move down. When the pressing portion 20 of the nipple 18 reaches the cloth on the needle plate 83, the downward movement of the elevating cylinder 17 is stopped, and the pressing portion 20 presses the core yarn 106 on the cloth 109. Even after this, the needle bar 24 continues to move downward, and the needle 29 is passed through the core thread 106 and the cloth 109 pressed by the pressing section 20, and the core thread 106 is sewn.

On the other hand, when the needle bar 24 moves upward, first, the needle bar 24 moves up independently and the needle 29 comes out of the cloth 109, and then the transmission member 55 of the needle bar 24 moves to the lower side of the interlocking member 57. Abut. After that, by the upward movement of the transmission member 55, the lifting cylinder 17 also moves upward through the members indicated by reference numerals 57, 62, 61, 60, 59, and the nipple 18
The holding portion 20 is lifted from the core yarn 106 on the cloth. The above operation is performed continuously and intermittently with the continuous and intermittent rotation of the main shaft 7.

(2) When the winding operation shaft 8 is rotated, the rotation power is transmitted to the rotation base frame 33 via the members indicated by reference numerals 70, 67, 73, 71, 74, 75, 34, and the rotation base frame 33 is rotated. The movable base frame 33 rotates around the axis of the needle bar 24. Therefore, the bobbin 36 and the thread guide piece 39 also rotate.

(3) When the nipple operating shaft 9 is rotated, the rotational power is transmitted to the transmission cylinder 22 via the members indicated by reference numerals 80, 77, 81 and 82, and the transmission cylinder 22 is connected to the axis line of the needle bar 24. Rotate around. The rotation is further transmitted to the elevating cylinder 17, and the nipple 18 rotates around the axis of the needle bar 24. The rotation of the nipple 18 is performed at a relatively slow speed (compared to the vertical movement speed of the needle bar 24) such that the threading hole 21 sequentially changes its position with respect to the axis. The details will be described later.

Next, the operation of design thread sewing by the head 6 of the design thread sewing machine of the above apparatus will be described with reference to FIGS. 2 to 5. Prior to the operation, first, the upper thread 105 is fed from a known upper thread supply mechanism (not shown) to the guide tube 30, the introduction hole 26,
The needle bar 24, the lead-out hole 27, the thread hole 29a of the needle bar 29, and the through hole 19 are sequentially passed. Also, the thick or thin core thread 106 is
From the upper opening of the needle bar 24, the lead-out hole 28, the threading hole 21
In order. Furthermore, the winding thread 107 is passed from the bobbin 36 through the guide 38 and the thread passing hole 40 in order. On the other hand, bobbin thread 108 is hook 85
It is ready to be supplied from.

In the above state, the tape reader
When the data signal from 104 is sent to the control device 11, the control device 11 sends a control signal to each driver to operate each motor. That is, the driver 98 operates in response to a signal from the control device 11, the motor 97 rotates, and the main shaft 7 rotates. As a result, the needle bar 24 operates as described above. In parallel with this, a signal from the control device 11 to the driver 96,
That is, the driver 96 is actuated by a signal to move the moving frame 10 in the X direction and the Y direction, respectively, and the motors 90, 93 are driven.
Rotates the number of times (or angle) corresponding to the amount to be moved. These rotations are performed simultaneously. By these rotations, the moving frame 10 moves in a predetermined direction by a predetermined amount. This movement is performed by the needle bar 24 when the detection signal from the position coder 99 is given to the control device 11.
It is performed in synchronization with the vertical movement of. That is, this is performed when the holding portion 20 of the nipple 18 is lifted from the upper surface of the cloth. By the vertical movement of the needle bar 24 and the movement of the moving frame 10 as described above, the core thread 106 is fed out through the threading hole 21 as shown in FIG.
Will be sewn on (lock stitch).

In parallel with the sewing operation as described above, the driver 101 operates in response to a signal from the control device 11 to rotate the motor 100 and the shaft 8 to rotate. This causes the bobbin 36 to rotate about the axis of the needle bar 24 as described above. as a result,
As shown in FIG. 5, the winding thread 107 wound around the bobbin 36 is sequentially wound and spirally wound around the core thread 106 sewn on the cloth 109. Upper thread 105 and lower thread 10
The pitch of the sewing by 8 and the winding thread 10 for the core thread 106
The relationship with the winding pitch of 7 can be arbitrarily changed by changing the relationship between the rotation speed of the motor 97 and the rotation speed of the motor 100. The relationship is that the former is performed once while the former is performed multiple times (including a number with a decimal point or less), or the latter is performed multiple times (including a number with a decimal point or less) while the former is performed once. The relationship to be performed is arbitrarily set.

When the moving direction of the moving frame 10 changes during the sewing of the core 106 and the winding thread 107 as described above (when the ratio of the moving amount in the X direction to the Y direction changes). The direction of the nipple 18 is changed as follows. That is, from the control device 11 to the driver 103, the control device 11
The angle signal corresponding to the signals of the movement amounts in the X and Y directions given from the driver 96 to the driver 96 is always given. Therefore, by the driver 103, the motor 102 for rotating the shaft 9 is always rotated in a state corresponding to the angle signal. Therefore, when the moving direction of the moving frame 10 changes, the angle signal also changes, and the shaft 9 rotates accordingly.
The rotation of the shaft 9 is transmitted to the elevating cylinder 17 as described above.
Rotates by a corresponding angle, and the nipple 18 also rotates together. This rotation means that the threading hole 21 in the nipple 18 is always in the moving direction of the moving frame 10 with respect to the through hole 19 (that is, the moving direction of the cloth 109).
In order to be in a state of being located on the side opposite to
It is set to 11. Even if the moving direction of the cloth 109 changes due to the rotation (direction change) of the nipple 18 as described above, the core yarn 106 is always pierced by the needle 29 from its back side (the side opposite to the side facing the cloth 109). Sewn to the cloth 109 in a threaded state. As a result, even when the core thread 106 is sewn in a curved shape as shown in FIG. 6, the core thread 106 can be reliably sewn at its center line portion.

Next, an example of using the A sewing machine 5 and the B sewing machine 6 shown in FIG. 1 will be described. First, the sewing machine 5, 5, 5 is used to embroider the cloth 109 stretched on the moving frame 10. Since this embroidery uses the well-known A sewing machine 5, an arbitrary pattern can be sewn. (For example, the pattern 143 in FIG. 11 may be sewn using a single-needle A sewing machine, or may be sewn using a so-called color change system (5-needle A sewing machine)).
A control tape 105 that is generally known for this sewing.
(Magnetic tape or punch type tape) is used. Further, these signals may be sent to the control device 11 using a well-known program storage device (electronic type).

When the well-known embroidery sewing (for example, the pattern 143) by the A sewing machine is finished in this way, the movable frame 10 is moved in the X'direction by W'dimension (the needle dropping position of the A sewing machine and the needle dropping position of the B sewing machine). And a distance corresponding to the distance W between and).
Next, the B sewing machine is operated to rotate the above-mentioned core yarn 106 around the pattern 143 (this means a portion of the pattern 143 to be given a three-dimensional effect). In this case, of course, as shown in FIG. 6, there is the winding thread 107 around the core thread 106 and the upper thread 10
The core thread 106 is sewn to the cloth with 6 and the bobbin thread 108. The arrangement of the core threads 106 is shown by the pattern 144 in FIG. Therefore, these combined sewing patterns are
The contour around 143 is three-dimensionally bordered by the core yarn 106. Of course, even if the sewing order of patterns 143 and 144 is reversed, pattern 145
However, the texture of the finish will be different. It may also be preferable to cover the core thread pattern with embroidery by an A sewing machine.

Next, the point of controlling the sewing will be described. In the control tape shown in FIG. 7, section G indicates a known arbitrary program for A sewing machine. For example this
Embroider 143. S is a stop signal position and issues a signal to stop the A sewing machine sewing at the "point" 143 'in the pattern 143. Next, the H section is a section for outputting a signal for moving the moving frame 10 in the X'direction by the W'dimension. Here, as described above, a signal for moving the frame 10 is issued via the control device 11 and the pulse motor 90. S'is the part that outputs the stop signal. The I section is a section in which the program necessary for sewing the pattern 144 is stored, starting from the point 144 'corresponding to the point 143', and operating all B sewing machines by the locus program corresponding to the contour around the pattern 143. Sew the above-mentioned pattern 145. In this sewing operation, when it is desired to make the end point 143 'and the start point 144' different, the corresponding operation may be corrected in advance in the tape program or in the operation circuit in the control device 11. Next, S "of the tape is a stop signal generating portion, and in the H'section, a signal program for returning the moving frame 10 to the anti-X 'direction for the next sewing is stored, which completes one process.

In the above operation, it is necessary to alternately select and stop the needle bars 24 of the A and B sewing machines. In this case, both sewing machines may be provided with a skipping mechanism, which is well known in advance, and the selection may be stopped based on electronic control. However, in the case of manual operation, the clutch mechanism shown in FIGS. 8 to 10 may be used. In the figure, the transmission gear 46 is loosely fitted on the main shaft 7, and the boss 136 is integrally rotatably fixed. A collar 46a is fixed to the transmission gear 46, and when the projecting pin 140 of the manual handle 137 is inserted into the deep hole 141 as shown in FIG. 10, the members 7,136,46a, 46 rotate together to project. When the pin 140 is inserted and fastened in the shallow hole 142, the head 139 of the connecting pin 138 is retracted and the boss 136 is rotated together with the main shaft 7, while the transmission gear 46 is stopped together with the needle bar 24. (Note: FIG. 8 shows the A sewing machine, but at the same time, the structure of the B sewing machine is also made the same, and at the S'position on the tape, each sewing machine is attached so that the A sewing machine is stopped and the B sewing machine is operated. (It is recommended to switch using the manual handle 137.)

Next, FIG. 12 shows a different embodiment of the design thread sewing machine. In the figure, 111 is a recess formed in the base frame 15e, 112 is a support arm having its base fixed to the transmission cylinder 22e, 113 is a bobbin rotatably mounted on a shaft piece attached to the tip of the support arm 112, The core thread is wound. Reference numeral 114 represents a core thread guide. Reference numeral 115 denotes a guide hole formed in the transmission cylinder 22e. On the other hand, 116 is a pulley exemplified as a drive member attached to the transmission cylinder 71e, 117 is a pulley (passive member) integrally formed with the rotating base frame 33e, and both pulleys 116 and 117 are connected by a timing belt 118. is there. Furthermore, 11
Reference numeral 9 is a cam fixed to the transmission shaft 43e, and a balance 53ae is connected to a cam groove 120 provided on the peripheral surface of the transmission shaft 43e.
The rotation of the balance 53ae causes the balance 53ae to perform a known operation.

In the case of such a structure, the nickel
In response to 18e turning in the same manner as described above, bobbin 11
3 can also be rotated around the needle bar 24e through the recess 111. Therefore, even if the nipples 18e turn in the same direction one after another and rotate around the axis of the needle bar 24e many times over 360 °, the core thread 106e causes the needle bar 24e and the needle 29e to rotate.
There is no inconvenience such as getting entangled. This is very convenient when sewing a loop pattern in which a turn in the same direction continues. It should be noted that parts that are considered to be the same or equivalent in configuration to those described above in terms of function are denoted by the same reference numerals as those described above, but with the letter e added to them, and duplicate description is omitted.

Next, the positioning of the threading hole 21 by changing the direction of the nipple 18 is 180 ° opposite to the above description, and the threading hole 21 is always positioned with respect to the through hole 19 through which the needle 29 descends. It may be located on the side of the moving direction of the cloth. That is, FIG.
In, the nipple 18 may be in the state as shown when the cloth 109 moves in the direction of the arrow 130. In this case, the core thread 106 is sewn as shown by the imaginary line. That is, the core thread 106 is always sewn on the ventral side, and when the sewing is finished, the upper thread and the lower thread are hidden by the core thread 106 and cannot be seen.

[0000]

As described above, according to the present invention, after the embroidery sewing is performed by one embroidery sewing machine, the cloth frame is moved to the adjacent embroidery sewing machine, so that the two embroidery sewing machines can be used. Therefore, there is an effect that a consistent embroidery pattern can be sewn at one specific place.

[Brief description of drawings]

FIG. 1 is an overall perspective view

FIG. 2 is a vertical cross-sectional view of a head of a design thread sewing machine.

FIG. 3 is a cross-sectional view taken along the needle bar position of FIG.

[Fig. 4] Control mechanism diagram

FIG. 5 is an enlarged sectional view of a sewing state.

FIG. 6 is a plan view of a sewing completed state

FIG. 7 is a plan view showing a program position of a control tape.

FIG. 8 is a perspective view of essential parts showing a related mechanism of a transmission gear.

9 is a vertical cross-sectional view of FIG.

10 is a vertical cross-sectional view of FIG.

FIG. 11 is a plan view for comparison showing the result of sewing with the A sewing machine and the B sewing machine.

FIG. 12 is a vertical sectional view showing another embodiment of the B sewing machine.

[Explanation of symbols]

 1 Table 5 Head of embroidery sewing machine 6 Head of sewing machine with design thread sewing

Claims (1)

Claims: 1. A needle bar (24) above a table surface and movable up and down toward a needle lower position on the table surface.
A plurality of embroidery sewing machines equipped with
In the embroidery sewing machine in which the cloth attached to the moving frame for vertically and horizontally moving on the table surface is embroidered by operating 4), the moving frame is provided with one needle bar (24 The needle bar (2) of another embroidery sewing machine that is juxtaposed with the specific point of the embroidery on the cloth sewn with the needle (29)
An embroidery sewing machine characterized in that it can be moved up to the position below the needle of the other embroidery sewing machine so that the needle (29) provided in 4) can be sewn.