JPH10272275A - Frame oscillation attenuating structure for industrial sewing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the increase of the oscillation and the oscillating noise of a cylinder bed at the time of assembling a driving motor, etc., inside the cylinder bed by forming the cylinder bed of an industrial sewing machine to be long. SOLUTION: The bed main body 40 of the cylinder bed of a multi-head type embroidery sewing machine is formed from aluminium to be long, a fully rotating shuttle 59 is mounted to its tip, a shuttle driving unit 50 including a shuttle driving motor 58 is mounted to its rear side, and an oscillation attenuating structure 70 obtained by insert-fixing a highly attenuated rubber plate 71 to a gap 71 obtained by deleting a part of the fixing face of the fixing block 56 of the unit 50 and fixing it in a compressed state is fitted. In addition, an oscillation attenuating structure 73 obtained by inserting a highly attenuated rubber plate and fixing with a pressing plate is fitted also at the inner face of the sidewall of the main body 40.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a frame vibration damping structure for an industrial sewing machine, and more particularly to a structure in which vibration of a cylinder bed is damped by a damping action of a highly damping elastic body.

[0002]

2. Description of the Related Art Among industrial sewing machines, a multi-head pattern stitch sewing machine having a plurality of sewing means for various pattern stitches and embroidery stitches, etc., uses an X-axis drive mechanism and a Y-axis drive mechanism in two orthogonal directions. A plurality of cloth holding frames are detachably mounted on the cloth conveying frame, and the plurality of cloth holding frames are moved and driven in the X direction and the Y direction via the cloth conveying frame. Often sewn while sewing. Each sewing means is provided with a large cylinder bed so that sewing can be performed even on a large work cloth. Recently, in order to reduce the weight of the cylinder bed, a bed made of aluminum and having a U-shaped open top section is used. A cylinder bed composed of a main body and a relatively thin cover plate that covers the upper side of the bed main body is often used.

On the other hand, the applicant of the present application has proposed a vertical separation drive type sewing machine in which a thread catching hook is driven by a hook drive motor independently and in synchronization with a sewing machine main shaft, and a technique for applying the same to a multi-head pattern sewing machine is proposed. Practical. In this multi-head sewing machine of the vertical separation drive type, the configuration of the shuttle drive system can be simplified by disposing the shuttle drive unit including the shuttle drive motor in the cylinder bed. On the other hand, the cylinder bed of a conventional industrial sewing machine has a sufficient mass and rigidity, and a vibration source such as a motor is not incorporated inside the tip side portion of the cylinder bed.
Vibration of a cylinder bed or the like is not much of a problem, and almost no technology for suppressing vibration of the main body frame of the industrial sewing machine has been proposed.

[0004]

As described above, when the shuttle drive unit is incorporated in a long cylinder bed, the vibration of the shuttle drive unit propagates to the cylinder bed, causing the cylinder bed to vibrate. Vibration noise increases. In particular, when the bed main body is made of a member made of aluminum and having a U-shaped cross section, the mass and rigidity of the cylinder bed are reduced, so that the vibration becomes remarkable. For example, when the rotation speed of the shuttle drive motor is 1800 to 2400 rpm, the cylinder bed resonates in a higher-order vibration mode (for example, a 13th to 19th-order vibration mode), and the cylinder bed becomes
Vibration occurs at 3.3 to 4.0 kHz, and the vibration noise increases.

For example, the results of a vibration analysis of a relatively long cylinder bed made of aluminum modeled as shown in FIG. 7 are as shown in FIGS. In particular, in the case of a multi-head sewing machine, since vibration noise is generated from a plurality of cylinder beds, the vibration noise is about 82.5 dB. SUMMARY OF THE INVENTION It is an object of the present invention to reduce vibration noise by attenuating vibration of a part of a main body frame of an industrial sewing machine with a simple configuration.

[0006]

A frame vibration damping structure for an industrial sewing machine according to claim 1 is a structure for attenuating vibration of a part of frames of a main body frame of the industrial sewing machine, and is fixed to the frame. A high-damping elastic body is provided between the mounting component and the frame to be clamped, and the vibration of the frame is attenuated by the high-damping elastic body. It is desirable to use a high damping rubber plate as the high damping elastic body, and the attachment component may be a drive unit including an electric motor. When vibration is propagated from the drive system or mounting parts other than the mounting parts during sewing with the sewing machine and the frame vibrates, a part of the vibration propagates to the highly damping elastic body and is converted into thermal energy. Vibration damps. Since the high damping elastic body can be mounted by effectively utilizing the structure for mounting the mounting component to the frame without using any components other than the high damping elastic body, the configuration of the vibration damping structure is simplified and compact.

According to a second aspect of the present invention, in the frame vibration damping structure for an industrial sewing machine according to the first aspect of the present invention, a part of a mounting surface of the mounting part to the frame is deleted, and the high damping elastic body is provided in the deleted part. Are provided in a sandwich shape. A part of the mounting surface of the mounting component to the frame is left without being deleted, and the mounting component can be positioned with respect to the frame via the remaining mounting surface and mounted with high precision. Other operations are the same as those of the first aspect.

According to a third aspect of the present invention, in the frame vibration damping structure for an industrial sewing machine according to the first or second aspect, the frame is a cylinder bed, and the mounting component drives the thread catching hook independently of the sewing machine motor. It is a shuttle drive unit including a shuttle drive motor. Since the shuttle drive unit is located near the tip of the cylinder bed, the cylinder bed is likely to vibrate due to vibration from the shuttle drive unit. Part of the vibration of the cylinder bed can be absorbed and attenuated by absorbing a part of the vibration. Other effects are the same as those of the first or second aspect.

According to a fourth aspect of the present invention, there is provided a frame vibration damping structure for an industrial sewing machine, wherein the vibration of a part of the body frame of the industrial sewing machine is attenuated. The holding plate is fixed with the elastic body interposed therebetween, and the vibration of the frame is attenuated by the high damping elastic body. It is desirable that the holding plate has a function of holding the high-damping elastic body and attaching it to the frame, and a function of increasing the rigidity of the frame. When the frame vibrates during sewing with the sewing machine, a part of the vibration propagates to the highly damping elastic body and is converted into thermal energy, so that the vibration of the vibrating portion of the frame is attenuated. Further, when the rigidity of the frame is increased by the holding plate, the vibration of the frame is also suppressed by the improvement in the rigidity.

According to a fifth aspect of the present invention, in the frame vibration damping structure for an industrial sewing machine according to the fourth aspect, the frame is a cylinder bed, and the cylinder bed drives a thread catching hook independently of the sewing machine motor. And a shuttle drive unit including a shuttle drive motor for driving the shuttle. Although the cylinder bed is likely to vibrate due to the vibration from the shuttle drive unit, a part of the vibration of the cylinder bed can be attenuated as described in claim 3.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, three embroidery sewing machines are provided, and in each embroidery sewing machine (corresponding to an industrial sewing machine), all the rotary hooks for catching the thread wheel are driven to rotate by the hook drive motor independently of the sewing machine motor. This is a case where the present invention is applied to the multi-head embroidery sewing apparatus as described above.

The multi-head embroidery sewing apparatus M will be described. As shown in FIG. 1, a substantially rectangular shape having a predetermined length in the left-right direction is provided on the rear side of the upper surface of the base frame 1 extending in the left-right direction. A sewing machine support plate 2 is provided, and a support frame 3 extending in the left-right direction is erected at a rear end portion of the sewing machine support plate 2, and three head portions 4 to 6 are provided on the support frame 3 at predetermined intervals. The bed units 10 to 12 are arranged in the left and right directions and the base frame 1 located at the front end of the sewing machine support plate 2 corresponds to each of the heads 4 to 6. The rear ends of the cylinder beds 7 to 9 are respectively supported.

The head portions 4 to 4 fixed to the support frame 3
6 and three multi-needle embroidery sewing machines M1 to M3 each including a bed unit 10 to 12 having an independent structure.
At the front end of each of the heads 4 to 6 of these embroidery sewing machines M1 to M3, 12 needle bars (not shown) having sewing needles 22 mounted at the lower end can be moved up and down in one row in the left-right direction. The needle bar cases 20 which support the twelve balances 23 in a swingable manner while supporting the twelve balances 23 are respectively supported, and each needle bar case 20 has a needle bar changing mechanism driven by a needle bar changing motor. (Not shown), the embroidery thread is simultaneously moved in the left-right direction and can be simultaneously changed to another embroidery thread having a different thread color.

A front end of each of the heads 4 to 6 has a needle bar vertical drive mechanism (not shown) for vertically driving the needle bar by a main shaft 17 driven by a sewing machine motor (not shown), and a presser foot. There is provided a presser foot up and down movement mechanism for moving the needle bar up and down when the work cloth is moved, a needle bar jump mechanism (not shown) for jumping the needle bar to its uppermost position, and the like. Sewing machine support plate 2
The work table 13 is horizontally disposed so as to be flush with the upper surfaces of the bed units 10 to 12 at the front side of the work table 13. A rectangular frame-like cloth transport frame 1 extending in the left-right direction over the pair of auxiliary tables 14 and 15.
6 is placed.

The drive frame 16 at the right end of the cloth transport frame 16
b is moved and driven in the X-axis direction (left-right direction) by an X-axis drive mechanism (not shown), and the drive frame 16a at the left end thereof and the drive frame 16b are moved by a Y-axis drive mechanism (not shown). It is driven to move in the Y-axis direction (front-back direction). Therefore, the cloth transport frame 16 is driven by the X-axis drive motor.
An axis driving mechanism and a Y-axis driving mechanism driven by a Y-axis driving motor can move on the XY plane. On the rear side of the auxiliary table 15, an operation panel 18 having a display 18a for displaying a message relating to embroidery sewing and a plurality of switches such as a sewing start switch and a mode setting switch for setting various sewing modes is provided. ing.

Next, the bed units 10 to 12 will be described. Since the three bed units 10 to 12 have substantially the same configuration, the leftmost bed unit 10 will be described. As shown in FIGS. 2 to 4, the bed body 40 of the cylinder bed 7 is a formed member made of aluminum and having a U-shaped cross section with an open top. The bed body 40 extends in the front-rear direction, and is attached at its rear end to a pair of support brackets 41 fixed to a portion of the base frame 1 extending in the left-right direction located at the front end of the sewing machine support plate 2. A shuttle drive unit 50 including a shuttle drive motor 58 is detachably fixed to a front end portion of 40. The upper surface of the front end portion of the bed body 40 is covered with a needle plate 42 having a needle hole 42a, and the upper surface other than the front end portion of the bed body 40 is covered with a cover plate 43 extending in the front-rear direction continuously with the needle plate 42.
Covered with.

Next, the shuttle drive unit 50 will be described. As shown in FIGS. 2 to 4, a mounting block 56 is detachably fixed to the front end of the bed body 40 by bolts 57, and a hook driving motor including a pulse motor is mounted on the rear end of the mounting block 56. The shuttle drive motor 58 is provided so as not to contact the bed body 40. At the front end side of the mounting block 56, there is provided a full rotary hook 59 for catching the thread wheel, and a rotary hook shaft 60 fixed to the full rotary hook 59 is pivotally supported by the mounting block 56 so that the position thereof can be adjusted in the front-rear direction. ing. The connecting member 62 attached to the rear end of the shuttle shaft 60 and the connecting member 63 attached to the front end of the drive shaft 58a of the shuttle drive motor 58 are connected to each other, and the shuttle shaft 60 and the drive shaft 58a are They are connected by a coupling 61 composed of connecting members 62 and 63. The shuttle shaft 60 is rotated in a predetermined rotation direction by the shuttle drive motor 58 in synchronization with the vertical movement of the sewing needle.

A disk encoder 64 is attached to the connecting member 63. An encoder sensor 65 comprising a photosensor for optically detecting a plurality of slits formed in the disk encoder 64 and outputting a shuttle shaft rotation signal. Are mounted on the mounting block 56. The shuttle shaft 60 is rotationally driven by the shuttle drive motor 58 via the drive shaft 58a and the coupling 61, and the full rotary hook 59 is rotated in a predetermined rotation direction in synchronization with the rotation speed of the sewing machine motor with respect to the main shaft 17. At twice the rotation speed. still,
The front end of the bed unit 10 is covered with a protective cover 66 pivotally supported at the lower end of the front end of the bed body 40 via a hinge mechanism so as to be openable and closable.

Next, a vibration damping structure for damping the vibration of the cylinder bed 7 will be described. The first vibration damping structure 70 shown in FIG.
Of the mounting surface 56a for mounting the mounting block 56 to the bottom wall 40a of the bed main body 40 is removed to form a mounting gap 71 having a height of, for example, 2.0 mm.
A high-damping rubber plate 72 (equivalent to a high-damping elastic body) made of high-damping rubber and having a thickness of, for example, 2.5 mm in the vertical direction is sandwiched in the mounting gap 71 in a compressed manner. It is fixed by. The first vibration damping structure 70 is provided between the shuttle driving unit 50 and the bed body 40.
In addition to absorbing part of the vibration to be propagated to the bed and converting it to thermal energy, it absorbs part of the vibration generated in the bed body 40 and converting it to thermal energy to attenuate the vibration.

The two sets of the second vibration damping structure 73 shown in FIGS. 4 and 5 will be described. The inner surfaces of the left and right side walls 40b of the rear approximately 2/3 of the body of the bed main body 40 which are easily vibrated are respectively provided. A second vibration damping structure 73 is provided. In each of the second vibration damping structures 73, a high damping rubber plate 74 (corresponding to a high damping elastic body) having a thickness of, for example, 2.5 mm is disposed on the inner surface of the side wall 40b in a surface contact manner. A steel holding plate 75 having the same width and the same length and a thickness of about 2 to 3 mm is provided on the surface of the steel holding plate 75 so as to be in contact with the surface thereof.
The holding plate 75 is fixed to the side wall 40b with eight bolts 76, and the high attenuation rubber plate 74 is sandwiched in a compressed state having a thickness of about 2.0 mm. The second vibration damping structure 73 absorbs a part of the vibration of the bed body 40 and converts it into heat energy to attenuate the vibration, and suppresses the vibration of the bed body 40 by increasing the rigidity of the side wall 40b by the holding plate 75. It is for.

Here, the bed body 40 of the cylinder bed 8 of the bed unit 11 in the center embroidery sewing machine M2.
Is provided with a guide mechanism 80 for movably supporting the central portion of the cloth transport frame 16 in the left-right direction in the front-rear direction. Therefore, as shown in FIGS. 73 and a set of third vibration damping structures 77 are provided. The second vibration damping structure 73 is the same as that of FIG.

The guide mechanism 80 includes a guide rail 82 fixed to the inner surface of the right side wall 40b of the bed body 40, extending in the front-rear direction, and fixed to the side wall 40b by bolts 81.
And a stay 84 connected to the movable frame 16 via a plurality of rollers 84 a so as to be relatively movable in the left-right direction and extending into the bed body 40, and fixed to the stay 84 via a bearing 85 on the guide rail 82. And a shoe member 83 movably engaged in the front-rear direction. Regarding the third vibration damping structure 77, as shown in FIG.
A high-damping rubber plate 78 (corresponding to a high-damping elastic body) having a thickness of, for example, 2.5 mm is sandwiched between the second side wall 40b and the side wall 40b.
Approximately 2.0 thick with bolt 81 via guide rail 82
mm. The third vibration damping structure 77 is for absorbing a part of the vibration of the bed body 40 to attenuate the vibration.

Next, the operation of the vibration damping structure described above,
The effect will be described. When the shuttle drive motor 58 is driven during sewing by the embroidery sewing machines M1 to M3, vibration is propagated to the bed bodies 40 of the cylinder beds 7 to 9, and the bed bodies 40 vibrate. The high damping rubber plate 72 of the first vibration damping structure 70 is attached to the mounting block 5 of the shuttle drive unit 50.
6 absorbs a part of the vibration that is going to propagate to the bed body 40 and converts it into thermal energy to suppress the vibration of the bed body 40, and absorbs a part of the vibration when the bed body 40 vibrates. Converts to heat energy and attenuates vibration.

The high damping rubber plate 74 of the second vibration damping structure 73
Absorbs a part of the vibration of the bed main body 40 and converts it into thermal energy to attenuate the vibration of the bed main body 40, and the pressing plate 75 increases the rigidity of the side wall 40b of the bed main body 40 to vibrate the side wall 40b. Suppress. The high damping rubber plate 78 of the third vibration damping structure 77 absorbs a part of the vibration of the bed body 40 and converts it into heat energy,
0 vibration is attenuated.

As described above, the embroidery sewing machines M at the left and right ends are provided.
Since the first vibration damping structure 70 and the two sets of vibration damping structures 73 are provided in the cylinder beds 7 and 9 of the M1 and M3, respectively, the vibration of the bed body 40 is suppressed and attenuated, and Embroidery sewing machine M2 has a set of first, second, and third vibration damping structures 70, 73,
Since the vibration of the bed body 40 is suppressed and attenuated by providing the 77, the vibration noise generated from the entire multi-head embroidery sewing apparatus M is significantly reduced. For example, according to an experiment, when no vibration damping structure was provided on the cylinder bed of one embroidery sewing machine, the vibration noise near the cylinder bed was about 82.5 dB. When only the structure 70 is provided, the vibration noise is reduced by about 5.0 dB, and when one set of the second vibration damping structure is further provided, the vibration noise is further reduced by about 5.0 dB, and the noise is further reduced. It was confirmed that when one set of the second vibration damping structure was provided, the vibration noise was further reduced by about 5.0 dB.

Moreover, in the first vibration damping structure 70, the mounting surface 56a of the mounting block 56 of the shuttle drive unit 50 is used.
Is removed to form a mounting gap 71, a high-attenuation rubber plate 72 is sandwiched in the mounting gap 71, and the mounting block 56 can be effectively used to mount the high-attenuation rubber plate 72. The vibration damping structure is simplified and compact. Also, the mounting surface 56a of the mounting block 56
Bottom wall 40 of the bed body 40 except for about a half of the front
a, the mounting block 56 and the high-attenuation rubber plate 72 are fixed by bolts 57, so that the mounting accuracy of the mounting block 56 to the bottom wall 40a can be secured.
The heat generated by the shuttle drive motor 58 can be radiated to the bed body 40 via the mounting block 56.

Also in the third vibration damping structure 77, since the high damping rubber plate 78 is sandwiched between the guide rail 82 and the side wall 40b, the guide rail 82 can be used effectively to mount the high damping rubber plate 78. The number is small and the vibration damping structure is simple and compact. In the embodiment, each of the embroidery sewing machines M1 to M3 corresponds to an industrial sewing machine, and in each of the embroidery sewing machines M1 to M3, a frame of the head unit 4 to 6, and a corresponding portion of the support frame 3,
The cylinder beds 7 to 9 correspond to the body frame of the sewing machine, the cylinder beds 7 to 9 correspond to a part of the frame of the body frame, the shuttle drive unit 50 corresponds to a mounting part, and the guide rail 82 is mounted. It is equivalent to a part.

Next, a description will be given of a modification in which the above-described embodiment is partially modified. In the first vibration damping structure 70, a high damping rubber plate may be provided between the shuttle drive motor 58 and the bed body 40 in a sandwiching manner.
A high attenuation rubber plate may be provided between the bed and the left and right side walls 40b of the bed body 40 in a sandwiched manner. Second vibration damping structure 73
In this case, the thickness of the presser plate 75 may be increased to further increase the rigidity of the side wall 40b, and the right and left presser plates 75 may be formed as integral upper U-shaped presser plates. A vibration damping structure similar to the second vibration damping structure 73 may be provided on the inner surface of the bottom wall 40 a of the main body 40. In addition, the present invention can be applied to various industrial sewing machines other than the embroidery sewing machine. In addition, it goes without saying that the vibration damping structure of the above embodiment can be implemented in various modified forms without departing from the spirit of the present invention.

[0029]

According to the first aspect of the present invention, the vibration of the frame is attenuated by a simple structure in which the high damping elastic body is provided between the mounting part fixed to the frame and the frame. As a result, vibration noise can be reduced.
In addition, since the high-damping elastic body can be mounted by effectively utilizing the structure for attaching the mounting component to the frame without using parts other than the high-damping elastic body, the configuration of the vibration-damping structure is simplified and compact. .

According to the second aspect of the present invention, a part of the mounting surface of the mounting part to the frame is deleted, and the high-damping elastic body is provided in the removed part in a sandwiched manner. Part of the mounting surface to
The mounting component can be positioned with respect to the frame via the remaining mounting surface and mounted with high precision. The other effects are the same as those of the first aspect.

According to the third aspect of the present invention, the frame is a cylinder bed, and the mounting component is a shuttle drive unit including a shuttle drive motor for driving the thread catching shuttle independently of the sewing machine motor. The vibration of the cylinder bed makes it easy to vibrate, but the high damping elastic body can absorb a part of the vibration generated from the shuttle drive unit and absorb and attenuate a part of the vibration of the cylinder bed. The other effects are the same as those of the first or second aspect.

According to the fourth aspect of the present invention, the holding plate is fixed to a portion of the frame where vibration is likely to occur with the high damping elastic body interposed therebetween.
Since the frame vibration is attenuated by the high damping elastic body, part of the vibration when the frame vibrates during sewing with the sewing machine is converted into thermal energy by the high damping elastic body, and the vibration of the frame is reduced. Vibration of a part which is likely to be attenuated can be attenuated to reduce vibration noise. Further, the rigidity of the frame is increased by the holding plate, so that the vibration of the frame can be suppressed.

According to the fifth aspect of the invention, the frame is a cylinder bed, and the cylinder bed is provided with a shuttle drive unit including a shuttle drive motor for driving the thread catch shuttle independently of the sewing machine motor. Although the cylinder bed of the frame is easily vibrated by the vibration from the shuttle drive unit, a part of the vibration of the frame can be attenuated as described in claim 3. The other effects are the same as those of the fourth aspect.

[Brief description of the drawings]

FIG. 1 is a perspective view of a multi-head embroidery sewing apparatus according to an embodiment of the present invention.

FIG. 2 is a partial plan view of a work table and a bed unit of the multi-head embroidery sewing apparatus.

FIG. 3 is a vertical sectional side view of a main part of the bed unit.

FIG. 4 is a plan view of a main part of a bed body and internal devices thereof.

FIG. 5 is a sectional view taken along line VV of FIG. 4;

FIG. 6 is a diagram corresponding to FIG. 5 of the bed body of the embroidery sewing machine at the center.

FIG. 7 is a plan view of a main part of a third vibration damping structure.

FIG. 8 is a perspective view of a vibration analysis model of a cylinder bed of the embroidery sewing machine.

FIG. 9 is a perspective view showing a 13th vibration mode of the vibration analysis model.

FIG. 10 is a perspective view showing a 14th-order vibration mode of the vibration analysis model.

FIG. 11 is a perspective view showing a 15th-order vibration mode of the vibration analysis model.

FIG. 12 is a perspective view showing a 16th-order vibration mode of the vibration analysis model.

FIG. 13 is a perspective view showing a 17th vibration mode of the vibration analysis model.

FIG. 14 is a perspective view showing an 18th-order vibration mode of the vibration analysis model.

FIG. 15 is a perspective view showing a 19th-order vibration mode of the vibration analysis model.

[Explanation of symbols]

 M1, M2, M3 Embroidery sewing machine 7, 8, 9 Cylinder bed 40 Bed body 50 Hook drive unit 58 Hook drive motor 59 Full rotation hook 70 First vibration damping structure 71 Mounting gap 72 High damping rubber plate 73 Second vibration damping structure 74 High damping rubber plate 75 Holding plate 77 Third vibration damping structure 78 High damping rubber plate

Claims (5)

[Claims] 1. A structure for damping vibration of a part of a main body frame of an industrial sewing machine, wherein a high damping elastic body is sandwiched between a frame fixed to the frame and a frame. A frame vibration damping structure for an industrial sewing machine, wherein the frame vibration damping structure is provided in such a manner that the vibration of the frame is damped by the high damping elastic body. 2. The industrial device according to claim 1, wherein a part of the mounting surface of the mounting part to the frame is deleted, and the high damping elastic body is provided in the deleted part in a sandwich shape. Frame vibration damping structure for sewing machines. 3. The frame is a cylinder bed,
3. The frame vibration damping structure for an industrial sewing machine according to claim 1, wherein the attachment component is a shuttle drive unit including a shuttle drive motor that drives the thread catch shuttle independently of the sewing machine motor. 4. A structure for damping vibration of a part of frames of a main body frame of an industrial sewing machine, wherein a holding plate is fixed to a portion of the frame where vibration is likely to occur with a high damping elastic body interposed therebetween. A frame vibration damping structure for an industrial sewing machine, wherein the frame vibration is damped by the high damping elastic body. 5. The frame is a cylinder bed,
5. The industrial machine according to claim 4, wherein the cylinder bed is provided with a shuttle drive unit including a shuttle drive motor for driving the thread catch shuttle independently of the sewing machine motor. Construction.