JPH08191973A - Sewing machine with laser beam machining function - Google Patents

Abstract

PURPOSE: To facilitate the exchange work of an object to be machined, and to improve safety by protecting a worker from laser beams by switching a laser head to a save position away from the object to be machined held by a holder and a use position close to it. CONSTITUTION: Concerning the sewing machine with laser beam machining function equipped with a sewing machine head 20 and a laser head 40, the laser head 40 can be switched to the save position away from the object to be machined held by the holder and the use position close to the object to be machined. Thus, when not performing the laser beam machining of the object to be machined, the laser head 40 is switched to the save position away from the object to be machined so that the exchange work, etc., of the object to be machined to the holder can be easily performed. When performing the laser beam machining of the object to be machined, on the other hand, the laser head 40 is switched to the use position close to the object to be machined and the worker is protected from the laser beam with which the object to be machined is irradiated at the time of this laser beam machining.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewing machine having a laser processing function, which can perform processing such as cutting a work by irradiating a laser beam.

[0002]

2. Description of the Related Art Conventionally, in the technique disclosed in Japanese Patent Publication No. 6-33550, for example, a laser beam is applied to the surface of a cloth (workpiece) held by an embroidery frame of an embroidery sewing machine. A possible laser device is provided. Then, the embroidery frame is X, Y based on the drive data.
The cloth is cut by irradiating a laser beam from the laser device while controlling the movement in both directions.

[0003]

In this prior art, it is necessary to secure a space between the laser device and the cloth (workpiece) for easily performing cloth replacement work on the embroidery frame. There is. On the other hand, this is dangerous because there is no means for protecting the worker from the laser beam between the laser device and the cloth.

One problem to be solved by the present invention is
A laser head capable of performing laser processing on a workpiece such as cloth can be switched between a retracted position away from the workpiece and a use position close to the workpiece, thereby enabling processing of the workpiece such as cloth. Replacement work is easy,
During laser processing, it is to protect workers from the laser beam and improve safety. Another problem to be solved by the present invention is to enable switching between the use position and the retracted position of the laser head without affecting the focus position of the laser beam.

[0005]

In order to solve the above-mentioned problems, the sewing machine with a laser processing function of the present invention is constructed as follows. The invention according to claim 1 is capable of holding a workpiece, and X, Y based on predetermined movement data.
A holder that is controlled to move in both directions, a sewing machine head that is capable of sewing the workpiece held by the holder, and a laser head that is also capable of laser machining of the workpiece held by the holder. In a sewing machine with a laser processing function including a laser head, the laser head is configured to be switchable between a retracted position separated from a workpiece held by the holder and a use position close to the workpiece. Has been done. According to a second aspect of the invention, in the sewing machine with a laser processing function according to the first aspect, a protective cylinder is provided at an end of the laser head facing the workpiece, and the protective cylinder is moved by moving only the protective cylinder. The retreat position or the use position can be switched.

[0006]

According to the first aspect of the invention, when the laser machining of the workpiece is not performed, the laser head is switched to the retracted position away from the workpiece, and the work of replacing the workpiece with respect to the holding body is replaced. And the like can be easily performed. On the other hand, during laser processing of the work piece, the laser head is switched to a use position close to the work piece, and the worker is protected from the laser beam emitted toward the work piece during the laser processing. It According to the second aspect of the invention, the retreat position or the use position of the laser head is switched by the movement of the protective cylinder, and therefore, the focusing position of the laser beam is not affected by this switching.

[0007]

Embodiments of the present invention will now be described with reference to the drawings. In the following embodiments, the present invention is applied to an embroidery sewing machine which is of a multi-head type and has a laser processing function for each sewing machine head. 1 is a front view of an embroidery sewing machine,
FIG. 2 is a plan view of FIG. As shown in these drawings, four sewing machine heads 20 are provided at equal intervals on the front surface of the sewing machine frame 14 located above the sewing machine table 10. On the upper surface of the sewing machine table 10, an embroidery frame 16 as a holder capable of holding a work piece (cloth) described later is controlled to move in both X and Y directions of FIG. 2 based on predetermined movement data (embroidery data). It is possible. In addition, as shown in FIG. 1, on the lower surface side of the sewing machine table 10,
The hook base 30 is supported on the horizontal frame of the table leg 12 at a position corresponding to each sewing machine head 20.

FIG. 3 is an enlarged front view showing one sewing machine head 20 and its peripheral portion, and FIG. 4 is a side view of FIG. As shown in these drawings, each sewing machine head 20 is
Sewing arm 22 fixed to the sewing machine frame 14
The needle bar case 24 is supported so as to be slidable in the left-right direction with respect to the front surface of the. The sewing machine head 20 of this embodiment is of a multi-needle type (six needles), and the needle bar case 24 has a sewing needle 2 at each lower end as shown in FIG.
Six needle bars 26 provided with 7 are respectively supported so as to be vertically movable. It is well known that one of the needle bars 26 is selected by sliding the needle bar case 24, and only the selected needle bar 26 is vertically driven together with the sewing needle 27.

A laser head 40 is attached to one side surface of the needle bar case 24 of each of the sewing machine heads 20. The axis line of the laser head 40, that is, the optical axis of the laser beam is, as shown in FIG. 3, the rightmost sewing needle 27a (the first sewing needle 27a) by a distance obtained by multiplying the pitch of each needle bar 26 (each sewing needle 27) by an integer. One needle) away from you to the right. Moreover, the axis of the laser head 40 is offset from the axis of each needle bar 26 (each sewing needle 27) to the front of the sewing machine by a predetermined distance as shown in FIG. The needle plate 32 attached to the upper surface of the hook base 30 is irradiated with the needle hole 34 through which the sewing needle 27 of the selected needle bar 26 is inserted and the laser head 40 as shown in FIG. And a hole 36 for receiving the laser beam. The hole 36 is formed at a position offset from the needle hole 34 forward of the sewing machine by the same distance as the offset amount of the laser head 40.

FIG. 5 is a perspective view showing the laser head 40, and FIG. 6 is a side view showing the sectional shape of the laser head 40 together with the sewing machine head 20, the hook base 30 and other related members. As is clear from these drawings, the laser head 40 includes a block 42 attached to an L-shaped head bracket 57, and a cylindrical body 44 vertically penetrating the block 42.
And the lens fixing cylinder 4 connected to the lower end of the cylinder 44.
6 and a protective cylinder 50 attached to the outer periphery of the lens fixing cylinder 46 so as to be able to move up and down. The head bracket 57 is fixed to a mounting plate 56 fixed to one side surface of the needle bar case 24 by bolting as shown in FIG.

The cylindrical body 44 is slidable up and down with respect to the block 42, and a flange 45 fixed to the upper end of the cylindrical body 44 has an adjusting bolt 62 whose tip is brought into contact with the upper surface of the block 42. It is screwed in the contacted state. The tubular body 44 moves up and down with respect to the block 42 according to the screwing amount of the adjusting bolt 62,
The height of 4 is adjusted. FIG. 7 shows a part of FIG. 6 in an enlarged sectional view. As is apparent from this drawing, the block 42 is attached to the head bracket 57 by a single support pin 58 such that the block 42 can be rotated about its axis (the inclination of the cylinder 44 can be adjusted).

As is apparent from FIGS. 5 and 7, two lock bolts 59 located above and below the support pin 58.
Is screwed so that the head bracket 57 and the block 42 can be tightened, and two lock bolts 60 located between the support pin 58 and both lock bolts 59 fix the cylindrical body 44 to the block 42. It is screwed so that it can be tightened. Therefore, after adjusting the rotation of the block 42, by tightening the both lock bolts 59,
Are locked to the head bracket 57. After adjusting the height of the cylinder body 44, the cylinder body 44 is locked to the block 42 by tightening another lock bolt 60 and each lock nut 61 and tightening the lock nut 63 of the adjustment bolt 62. It

As shown in FIG. 6, the lens fixing cylinder 46 is screwed to the outer periphery of the lower end portion of the cylindrical body 44. The lower end of the cylinder 44 and the lens fixing cylinder 4
A lens 47 is held between the inner peripheral step portion 6 and the inner peripheral step portion 6. The protective cylinder 50 is formed of a transparent synthetic resin material or the like, and an annular groove 53 is formed on the outer periphery of the upper end portion thereof. As shown in FIGS. 3 to 5, a fork-shaped arm 74 is engaged with the annular groove, and the arm 74 is coupled to a rod 71 of an air cylinder 70 attached to the head bracket 57 via a bracket 72. Has been done. Therefore, by driving the air cylinder 70,
The protection cylinder 50 moves along the outer circumference of the lens fixing cylinder 46 between a raised position (retracted position) shown by a virtual line and a lowered position (used position) shown by a solid line in FIG.

An air hole 52 is formed in the side wall of the protective cylinder 50 near the lower end, as shown in FIG.
As shown in FIGS. 3 and 5, one end of an air pipe 76 is connected to the air hole 52, and the other end of the air pipe 76 is connected to an air supply source (not shown) so that the inside of the protective cylinder 50 extends from the air hole 52. Air can be blown into. Further, as shown in FIG. 4, a pipe 66 extending from the side of the sewing machine frame 14 toward the front of the sewing machine is arranged below the sewing machine arm 22. The lower end of the laser head 40 (protective cylinder 5
The suction nozzle 64 that is brought closer to the lower end portion of 0),
Moreover, the rear end of the pipe 66 is connected to a duct 68 provided in the sewing machine frame 14. The duct 68 is connected to a suction blower (not shown) so that air around the lower end of the laser head 40 can be sucked.

Above the laser head 40, a beam guide body 80 mounted on the side surface of the needle bar case 24 is arranged. This beam guide 80 is shown in FIGS.
As shown by, the mirror support block 82 and two guide tubes 86 and 87 connected thereto are provided. The mirror support block 82 is attached to the side surface of the needle bar case 24 by a support pin 83 so as to be adjustable in rotation (adjustment of inclination in the front-rear direction of the sewing machine), and after this adjustment, a lock bolt 84 can be tightened and locked. It is like this. The guide tubes 86 and 87 are connected to the mirror support block 82 so as to be orthogonal to each other in the vertical direction and the front-back direction of the sewing machine. That is, one guide tube 86 extends downward from the mirror support block 82, the tip end thereof is inserted into the upper end opening of the cylindrical body 44 of the laser head 40, and the other guide tube 87 is extended from the mirror support block 82. It extends rearward.

FIG. 8 is a sectional view showing a part of the beam guide body 80 in an enlarged manner, and FIG. 9 is a structural view of FIG. 8 viewed from the direction of arrow A. As is clear from these drawings, both the guide tubes 86, 8 are provided with respect to the mirror support block 82.
The hole into which 7 is inserted is the mirror support block 82.
Are orthogonal to each other. The mirror support block 82 is opened at this orthogonal position, and a holding plate 89 having a mirror 88 inside is attached to the opening. The holding plate 89 is fastened to the mirror support block 82 by a total of three fixing bolts 90, one at the center of the upper row and two at the left and right of the lower row in FIG. On the other hand, the tips of the three adjusting bolts 91, which are the left and right two in the upper row and the central one in the lower row in FIG. 9, are in contact with the surface of the mirror support block 82. The inclination of the holding plate 89, that is, the mirror 88 can be adjusted by the screwing amount of the adjusting bolts 91, and the holding plate 89 is fixed to the mirror support block 82 by tightening the fixing bolt 90 after this adjustment.

On the front side of the mirror support block 82, a protective cover 92 is attached so as to cover the holding plate 89 of the mirror 88. This protective cover 92 is
This is for protecting the worker from the laser beam should the holding plate 89 be detached from the mirror support block 82. The protective cover 92 has a through hole 9 into which a tool for turning the fixing bolt 90 and the adjusting bolt 91 is inserted.
Equipped with 3.

Now, as shown in FIG. 2, each sewing machine head 20
Laser oscillators 100 are respectively arranged at the rear positions of the sewing machine in the front-back direction of the sewing machine. The laser oscillator 100 is of a type using a gas laser (CO ₂ laser) capable of continuously irradiating a laser beam. In front of each laser oscillator 100, a conduit 106 for guiding a laser beam emitted from an individual irradiation nozzle (not shown) to a guide tube 87 of the beam guide body 80 is provided. That is, when the laser head 40 is selected by sliding the needle bar case 24,
The rear end opening of the guide tube 87 is the laser head 4
0 and corresponding conduit 106 in laser oscillator 100
Facing the front end opening. Therefore, laser oscillator 1
The laser beam emitted from 00 enters the beam guide body 80 through the conduit 106, hits the mirror 88, and is guided into the cylindrical body 44 of the laser head 40. Then, the laser beam passes through the lens 47, and the workpiece (cloth) can be laser-processed (cut, etc.) at the focus position by the lens 47. It should be noted that each of the above-mentioned conduits 106 is, as is clear from FIG.
It is fixed to the upper surface of No. 4.

FIG. 10 is a block diagram showing the periphery of the laser oscillator 100. As shown in FIGS. 10 and 2, the laser oscillator 100 includes a support frame 102 fixed to the sewing machine frame 14 and the sewing machine table 1.
It is mounted and fixed on the upper surface of a support plate 104 that is horizontally supported by a support frame 103 that is fixed to the rear end portion of 0. A controller 107 of the laser oscillator 100 is mounted on the lower surface of the support plate 104, and a chiller box 10 for cooling the laser oscillator 100 is provided below the sewing machine table 10 as shown in FIG.
8 are arranged.

As shown in FIG. 10, in each of the conduits 106, a blocking device 110 capable of blocking the laser beam is provided at an end portion on the side close to each laser oscillator 100. This shutoff device 110 is used for the laser head 4
When 0 is not selected, that is, when the rear end opening of the guide tube 87 does not face the front end opening of the conduit 106, it is provided as a safety measure in case the laser beam is accidentally emitted from the laser oscillator 100. It is a thing.

FIG. 11 is an enlarged sectional view taken along line BB of FIG. The shutoff device 110 will be described with reference to this drawing. Supports 112 are fixed to both sides of an opening formed in the upper surface of the conduit 106, and a steel block member 116 is fixed to the inside of the conduit 106. ing.
A latching solenoid 114, which is an actuator of the breaking device 110, is fixed between the two supports 112 above the opening with the rod 115 thereof directed downward. The block member 116 has a vertical hole 117 penetrating up and down, and a lateral hole 1 crossing the hole 117 penetrating forward and backward.
And 18 are formed. This lateral hole 118 is the conduit 106.
The laser beam passes through the inside of the.

An opening / closing element 119 connected to the rod 115 of the solenoid 114 is vertically movable in the vertical hole 117 of the block member 116. Therefore, as shown in FIG. 11A, the rod 1 of the solenoid 114 is
In the state where 15 is retracted, the opening / closing element 119 is pulled up and the lateral hole 118 is opened. On the other hand, in the state where the rod 115 is projected as shown in FIG. 11B, the opening / closing element 119 is pushed down and the lateral hole 11
8 is closed, and even if the laser beam is accidentally emitted from the laser oscillator 100, it is blocked by the switch 119. The latching solenoid 114 is shown in FIG.
Even if the excitation is turned off in either of the states (A) and (B), the rod 115 can be held in the respective states.

As shown in FIG. 3, the needle bar case 24 of each sewing machine head 20 is provided with a control panel 120 on the opposite side of the laser head 40. The control panel 120 includes a test switch 122 for instructing laser beam irradiation when adjusting the laser beam power, and up / down switches 123, 1 for adjusting the laser beam irradiation power.
24, display unit 12 for displaying the power of the laser beam
6, an elevating switch 125 for instructing the driving of the air cylinder 70 for elevating the protection cylinder 50 of the laser head 40, and other switches are provided.

When the main switch (not shown) of the sewing machine having the above construction is turned on, the laser oscillator 100 and the chiller box 108 are turned on.
When the preheating of these laser oscillators 100 is started, the laser oscillators 100
The circulating supply of cooling water to the Therefore, various adjustments of the laser beam emitted from the laser oscillator 100 will be described.

Position Adjustment of Laser Beam 1. The needle bar case 24 of the sewing machine head 20 is slid to select the laser head 40. 2. Lift switch 12 of the control panel 120
5, the protective cylinder 50 is lowered from the retracted position to the use position. 3. The test switch 1 of the control panel 120
22 and the up switch 123 are simultaneously pressed for a moment.
As a result, a test mode is set, and an extremely low level laser beam is emitted for a predetermined time. Therefore, it is confirmed whether or not the laser beam passes through the center of the hole 36 of the needle plate 32, and if the laser beam is deviated, tilt adjustment of the cylindrical body 44 of the laser head 40 in the left-right direction of the sewing machine or the beam Guide 8
Adjust the tilt of 0 in the front-back direction of the sewing machine.

3. Regarding the power adjustment of the laser beam, after performing the operations 1 to 3 above, 4. The "setting mode" is switched on the operation panel 18 of the sewing machine shown in FIG. 5. Test switch 1 of the control panel 120
When 22 is pressed, the laser beam is emitted only during that time. Therefore, a test cloth is placed on the needle plate 32 to check the cutting condition by the laser beam. The laser beam gradually powers up by continuously pressing the test switch 122 and the up switch 123 at the same time, and gradually powers down by continuously pressing the test switch 122 and the down switch 124 at the same time.

5. Adjustment of in-focus position After performing the above operations 1 to 5, 6. The height of the cylindrical body 44 in the laser head 40 is changed by the adjusting bolt 62 to adjust the focus position of the lens 47. Depending on the workpiece (cloth), it may be better to replace the lens 47 with one having a different focal length. In that case, the laser head 40 itself is removed from the head bracket 57, and a lens having a different focal length is provided. Replace with another laser head. The power adjustment of the laser beam and the adjustment of the focus position are performed every time the workpiece is replaced.

Next, switching between embroidery sewing and laser processing will be described. As described above, by sliding the needle bar case 24 of the sewing machine head 20, one of the needle bars 26 (sewing needles 27) or the laser head 40 is selected. That is, in the case of embroidery stitching, the sewing needle 27 of the selected needle bar 26 is positioned so as to pass through the needle hole 34 of the needle plate 32, and in the case of laser processing, the laser beam emitted from the laser head 40 is a needle. It is located so as to pass through the hole 36 of the plate 32. Although switching between embroidery sewing and laser processing can be performed manually, it is usually set in advance for these operations.
This setting is performed by key input on the operation panel 18 of the sewing machine, and is set for each unit of embroidery sewing and laser processing. Note that the number of needle bars 26 of each sewing machine head 20 of this embodiment is six (six needles), and these are selected by the key inputs "1" to "6" described above, and the laser head 40 is selected by key input. It is set to "0".

The difference in the movement control of the embroidery frame 16 between the embroidery sewing and the laser processing will be briefly described. When the embroidery is sewn, normal movement control is performed based on the movement data (embroidery data), and the laser processing is performed. At the same time, the embroidery frame 16 is continuously moved at a constant speed while linearly interpolating the movement control based on the embroidery data. That is, when sewing embroidery,
Since the embroidery frame 16 can be moved only while the sewing needle 27 is removed from the work (cloth) held by the embroidery frame 16, the embroidery frame 16 must be moved intermittently. Further, when the embroidery is sewn, it suffices that the sewing needle 27 drop to the point according to the data, so the embroidery frame 16 is not necessarily moved along the straight line connecting the points. On the other hand, during laser processing, it is necessary to continuously move the embroidery frame 16 at a constant speed along a straight line connecting points of data. However, when the stitch length of the embroidery data used for laser processing is set to be small to some extent, laser processing is possible even if the movement control of the embroidery frame 16 is not necessarily linear interpolation or constant speed. During the laser processing, rotation of the sewing machine main shaft, which is a drive source for the needle bar 26 of the sewing machine head 20, is stopped.

Next, a combination work of embroidery sewing and laser processing (cutting) will be described. FIG.
2 shows an example of the combination work.
In this drawing, embroidery 132 is performed in the first step, laser cutting 133 and 134 are performed in the second step, and embroidery 1 is performed in the third step on the cloth 130 that is the workpiece.
35 shall be performed. Therefore, after inputting and setting embroidery data for performing this work, setting for executing embroidery sewing and laser cutting is performed in the order of the first step to the third step. This setting is performed by key input on the operation panel 18 of the sewing machine as described above, and in the first step, for example, key input "1" is used to instruct selection of one of the six needle bars 26 to be used. In the second step, the selection of the laser head 40 is instructed by the key input "0", and in the third step, the needle bar 2 is pressed by the key input "5", for example.
Command the selection of one of the six to be used.

A special code (hereinafter referred to as "laser code") for instructing laser cutting is inserted in the embroidery data for performing the combination work of embroidery sewing and laser cutting. The irradiation of the laser beam from the laser head 40 is turned on when the "laser code" is first read in the data, and the irradiation of the laser beam is turned off when the next "laser code" is read. Is set to. In the case of the laser cuts 133 and 134 in FIG. 12, points a and b are the individual cut start points and the individual cut end points. Therefore, in the embroidery data, the "laser code" is provided at a total of four locations corresponding to the points a and b.
Has been inserted.

In the following description, the step for which the selection of the needle bar 26 is instructed as in the first step and the third step is referred to as "embroidery step", and the selection of the laser head 40 is instructed as in the second step. The performed step is called a "laser step". The controller 107 shown in FIG. 10 controls the laser oscillator 100 to turn on / off the irradiation of the laser beam when the “laser code” is read during the “laser step”.

In carrying out the combination work shown in FIG. 12, the needle bar case 24 is slid by starting the sewing machine, and one of the needle bars 26 instructed by the key input "1" is selected. To be done.
On the other hand, by controlling the movement of the embroidery frame 16, the point c of the embroidery 132 in the first step is positioned right above the needle hole 34 of the needle plate 32, and the selected needle bar 26 is driven and the embroidery frame 16 is moved. The embroidery 132 is executed by the movement control for embroidery sewing. After the end of the embroidery 132, the movement of the embroidery frame 16 is controlled, and the point a of the laser cut 133 in the second step is positioned right above the hole 36 of the needle plate 32. Then, the needle bar case 24
Is slid to select the laser head 40 instructed by the key input "0".

After the laser head 40 is selected, the protection cylinder 50 descends from the retracted position shown by the phantom line in FIG. 3 to the use position shown by the solid line. Then, the blowing of air into the inside of the protective cylinder 50 through the air pipe 76 is started, and the suction of the air by the suction nozzle 64 shown in FIG. 4 is started. Then, the solenoid 114 of the breaking device 110 is driven to move the lateral hole 1 as shown in FIG.
18 is opened. This second step is a “laser step”, and since the first “laser code” is read at the point a of the laser cut 133, the laser beam is emitted from the laser head 40. At the same time, the embroidery frame 16 is moved and controlled at a constant speed following the laser cut 133, and this portion is cut out.

Since the second "laser code" is read at the point a at the end of cutting, the laser beam irradiation is turned off. After that, the embroidery frame 16 is controlled to move so that the point b of the laser cut 134 is located right above the hole 36 of the needle plate 32. Therefore, the cloth 130 is not cut between the points a and b. Point b of the laser cut 134
Since the third "laser code" is read in, the irradiation of the laser beam is started again, and at the same time, the embroidery frame 16 is moved and controlled at a constant speed following the laser cut 134, and this portion is cut out.

At the point b at the end of the laser cut 134, the fourth "laser code" is read and the laser beam irradiation is turned off. After that, the embroidery frame 16 is controlled to move, and the point d of the embroidery 135 in the third step is positioned right above the needle hole 34 of the needle plate 32. Then, one of the needle bars 26 instructed by the key input “5” is selected by sliding the needle bar case 24, and for driving the selected needle bar 26 and sewing the embroidery frame 16. The embroidery 135 of the third step is executed by the movement control of. After the needle bar 26 of the third step is selected, the solenoid 114 of the breaking device 110 is driven to close the lateral hole 118 as shown in FIG. To the retracted position indicated by the virtual line. The blowing of air into the protective cylinder 50 and the suction of air by the suction nozzle 64 are stopped each time the irradiation of the laser beam is turned off.

By blowing air into the protective cylinder 50 at the time of the laser cutting, the flame generated when the cloth 130 is burnt by the laser beam is extinguished, and the smoke is discharged from the lower end of the protective cylinder 50 and the cloth. It is blown out from the gap between the nozzle 130 and the outside. Then, the blown out smoke is sucked and processed by the suction nozzle 64. As an alternative configuration, the inside of the protection cylinder 50 and the suction duct 68 shown in FIG. 4 may be connected by a pipe or the like, and air may be sucked out from the inside of the protection cylinder 50 at the time of laser cutting. According to this configuration, air is sucked into the inside of the protective cylinder 50 through the gap between the lower end of the protective cylinder 50 and the cloth 130, so that the flame is blown out by the air flow at that time, and Smoke is also sucked out. At the time of laser cutting, the laser beam passing through the hole 36 of the needle plate 32 is received by the receiving plate 38 fixed to the horizontal frame of the table leg 12 on the lower surface of the sewing machine table 10 as shown in FIG.

[0038]

According to the present invention, it is possible to easily carry out the work of replacing a work piece, etc., and at the time of laser processing, the worker is protected from the laser beam and the safety is enhanced. It is also possible to switch between the use position and the retracted position of the laser head without affecting the focus position of the laser beam.

[Brief description of drawings]

FIG. 1 is a front view of an embroidery sewing machine.

FIG. 2 is a plan view of FIG.

FIG. 3 is an enlarged front view of one sewing machine head and its peripheral portion.

FIG. 4 is a side view of FIG. 3;

FIG. 5 is a perspective view of a laser head.

FIG. 6 is a sectional view of the same laser head.

7 is a sectional view showing a part of FIG. 6 in an enlarged manner.

FIG. 8 is a cross-sectional view showing an enlarged part of the beam guide body.

9 is a configuration diagram of FIG. 8 viewed from the direction of arrow A. FIG.

FIG. 10 is a configuration diagram showing the periphery of a laser oscillator.

11 is an enlarged cross-sectional view taken along the line BB of FIG.

FIG. 12 is an explanatory view showing an example of a combination work of embroidery sewing and laser processing (cutting).

[Explanation of symbols]

 16 Holder (embroidery frame) 20 Sewing head 40 Laser head 50 Protective cylinder 130 Workpiece (cloth)

Claims (2)

[Claims] 1. A holding body capable of holding a work piece and being controlled to move in both X and Y directions based on predetermined movement data, and enabling sewing of the work piece held by the holding body. In a sewing machine with a laser processing function, which is provided with a sewing machine head that is arranged and a laser head that is also arranged so that laser processing can be performed on a workpiece held by a holding body, the laser head is held by the holding body. A sewing machine with a laser processing function, characterized in that it can be switched between a retracted position away from the work piece and a use position close to the work piece. 2. The sewing machine with a laser processing function according to claim 1, wherein a protective cylinder is provided at an end of the laser head facing the workpiece, and by moving only the protective cylinder, the retracted position of the laser head or A sewing machine with a laser processing function that is characterized by being able to switch the position of use.