JPH0623694A - Press device for substance to be cut for cutting device - Google Patents

Abstract

PURPOSE:To prevent occurrence of displacement of a thread by nicely pressing the substances to be cut on both sides during a cutting work by means of a cutter. CONSTITUTION:In a cutting device wherein a knife 28 is relatively moved in a given feed direction in relation to cloth 14, a device to press the cloth 14 during cutting is provided. A bracket 34 elevated in relation to the knife 28 is energized downward through the force of a compression spring 40, and right and left press rollers 48 are rotatably mounted on the bracket 34. The directions of the rotary central axes 49 of both press rollers 48 are set so that the press rollers 48 may roll over the parts, of the cloth 14 situated in the vicinity of both sides of the knife 28.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting device for cutting an object to be cut such as a cloth with a cutter such as a knife.
The present invention relates to a device for pressing the object to be cut from above during the cutting.

[0002]

2. Description of the Related Art Generally, when cutting an object to be cut such as cloth, a reciprocating motion (vibration) is applied to a knife such as a knife to move the knife or the like relative to the object to be cut in a predetermined feeding direction. It is done by. For example, when cutting a cloth with a knife using ultrasonic vibration, as shown in FIGS.
As shown in, the knife 92 is oscillated in a vertical direction at a high frequency, and the knife 92 is moved in a predetermined feeding direction with respect to the fabric 90, whereby cutting in the same direction is performed.

However, since cutting resistance is always generated during such cutting, the cutting resistance pulls the yarn of the cloth 90 in the feeding direction near the cutting edge of the knife 92 (area d shown in FIG. 13). So-called "thread shift" occurs as shown in FIG. With such a thread shift left,
When the end surface of the cloth 90 is cut at a right angle with the line L as shown in FIG. 4 (a), so-called sagging 94 as shown in FIG. 4 (b) occurs at the corner, which lowers the commercial value.

Therefore, conventionally, as shown in FIG. 15, a plate-shaped pressing member 96 is provided around the knife 92, and a device for advancing the cutting while pressing the cloth 90 on the table with the pressing member 96 is used. There is. The pressing member 96 has a disc shape and has a through hole 95 in the center thereof. Then, with the knife 92 inserted through the through hole 95, the pressing member 96 is pressed by a spring (not shown) or the like to the lower cloth 90.
The pressing member 96 and the knife 92 move integrally in the feed direction while being pressed against the
The cutting while pushing the cloth 90 around 2 is advanced.

[0005]

The above-mentioned device has the following problems.

(A) Since the pressing member 96 advances the cutting while sliding on the cloth 90, the frictional force between the pressing member 96 and the cloth 90 is large. Due to such frictional force, FIG.
As shown in (a), a yarn shift 97 in the knife feeding direction may occur, or as shown in (b) of the figure, dragging may occur with another cutting surface 98 as a boundary.

(B) Since the pressing member 96 is in contact with the cloth 90 over its entire area, the contact area between them is large. The pressing force applied from the pressing member 96 to the cloth 90 is dispersed by this amount, and the force pressing the vicinity of the knife 92 is reduced.

(C) Since the bottom surface of the pressing member 96 is flat, when the cloth 90 has a step 99 or a change in thickness as shown in FIG. 17, it is possible to bring the pressing member 96 into good contact with this portion. Can not.

It is an object of the present invention to provide a device for pressing an object to be cut in a cutting device which can solve the above problems.

[0010]

According to the present invention, a cutter and a holding member for the cutter are provided, and by moving the cutter relative to the object to be cut in a predetermined feed direction, the object to be cut is moved in the feed direction. In a cutting device for cutting, an elevating member attached to the holding member so as to move integrally with the holding member in the feed direction and capable of elevating with respect to the holding member, and rotatably attached to the elevating member, Further, the cutter and the holding member for moving the cutter with respect to the object to be cut are provided with a pressing roller arranged in a position near the left and right of the cutter, and a biasing means for biasing the elevating member in a direction toward the object to be cut. Accordingly, the rotation center axis of the pressing roller is set so that it rolls while being pressed against the object to be cut (Claim 1).

Here, the outer peripheral surface of the pressing roller is a conical surface whose diameter decreases toward the outer side in the axial direction, and the direction of the central axis of rotation of the pressing roller is such that this conical surface presses against the object to be cut. It is more preferable to set (Claim 2). Further, the conical surface of the pressing roller is composed of a first conical surface and a second conical surface having a larger inclination with respect to the center axis of rotation than the first conical surface in this order from the axial inner side. Further, it becomes more effective by setting the direction of the rotation center axis of the pressing roller so that at least the first conical surface is in pressure contact with the object to be cut (claim 3).

Further, by tilting the central axis of rotation of the pressing roller forward of the cutter in the feeding direction, a more excellent effect as will be described later can be obtained (claim 4).

Further, according to the present invention, instead of the pressing roller, between the rotating roller which is rotatably attached to the front and rear portions of the elevating member and which is arranged at a position near the left and right of the cutter, and the front and rear rotating rollers. The pressing belt is provided around the lifting belt, and a biasing unit that biases the elevating member in a direction toward the object to be cut, and the pressing belt moves as the cutter and its holding member move with respect to the object to be cut. The arrangement position may be set so as to travel while being pressed against the object to be cut (Claim 5).

[0014]

According to the first aspect of the present invention, the pressing roller rotatably mounted on the elevating member is pressed against the surface of the object to be cut by the urging force of the urging means, and the cutter for the object is cut. It rolls on the object to be cut along with the relative movement in the feeding direction. That is, the pressing roller presses the object to be cut while rolling on both right and left sides of the cutting position by the cutter, so that the pressing roller hardly drags the object to be cut. Further, the contact between the two is a substantially linear contact, and since the contact area is small, a large pressing force is concentratedly applied from the pressing roller to the object to be cut.

In the apparatus according to the second aspect of the present invention, the outer peripheral surface of each pressing roller is a conical surface whose diameter decreases toward the outer side in the axial direction, and the pressing roller rotates so that the conical surface presses against the object to be cut. Since the direction of the central axis is set (i.e., inclined), the inclination prevents interference between the pressing roller and the holding member of the cutter.

Further, in the apparatus according to the third aspect of the present invention, the first conical surface of each pressing roller is pressed against the object to be cut more positively than the second conical surface, so that the entire conical surface is uniform. The pressing force applied to the object to be cut from the first conical surface is larger than that in the case of pressing the object to be cut.

In the apparatus according to the fourth aspect, since the rotation center axis of each pressing roller is inclined to the front side in the feeding direction of the cutter, the rolling of the pressing roller exerts a tension in the left-right direction on the object to be cut. However, that much facilitates cutting with a cutter.

According to a fifth aspect of the present invention, there is provided the first aspect.
Similar to the presser roller described above rolling on the object to be cut, the pressing belt running between the front and rear rotating rollers runs on the object to be cut, thereby pressing the object being cut. .

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIGS.

The cutting device shown in FIG. 7 includes a base 10 installed on the ground, and a table 12 is provided on the base 10. Above the table 12, a Y-axis beam 16 that crosses the table 12 in the width direction (Y-axis direction) is provided.
The Y-axis table 12 runs on the base 10 in the X-axis direction. A spindle head 18 is mounted on the Y-axis beam 16 so as to be able to travel along the longitudinal direction (that is, the Y-axis direction). The spindle head 18 has a built-in ultrasonic oscillator (not shown), and a cutting section 20 including the ultrasonic oscillator is provided below the spindle head 18 so as to be rotatable about a vertical axis (C axis) and to move up and down (Z axis direction). It is installed as possible. Then, the Y-axis beam 16 operates in the X-axis direction with the cloth 14 as the object to be cut being fixed on the table 12.
Further, by moving the spindle head 18 in the Y-axis direction with respect to the Y-axis beam 16, the cutting section 20 can be moved relative to the cloth 14 in the X-axis direction and the Y-axis direction.

The structure of the cutting section 20 is shown in FIGS. A base plate 22 is mounted on the lower surface of the spindle head 18, and an ultrasonic horn 24 extending in the vertical direction is connected to an ultrasonic oscillator attached to the spindle head 18. The ultrasonic horn 24 is the base plate. Two
2, the tip 26 is fixed to the lower end of the ultrasonic horn 24, and the tip 26 has a knife (cutter) 28 having an inclined blade 27 as shown in FIG. Is installed. The spindle head 18, the base plate 22, and the ultrasonic horn 24 constitute a support member (a knife support member in this embodiment) of the present invention, and the ultrasonic waves oscillated in the spindle head 18 are ultrasonic waves. It is transmitted to the knife 28 via the sound wave horn 24 and the tip 26, whereby the knife 28 is slightly vibrated in the vertical direction.

A cloth pressing device 30 for pressing the cloth 14 from above is provided around the ultrasonic horn 24 and the knife 28.

The cloth pressing device 30 is provided with a bracket (elevating member) 34. The bracket 34 has a U-shape in plan view as shown in FIG. 3, and is provided at a position surrounding the ultrasonic horn 24 and the knife 28 from both left and right sides and from the front side in the knife feeding direction. As shown in FIG. 1, the bracket 34 is provided with three through holes 35 penetrating through the bracket 34 in the vertical direction, while at the positions corresponding to the through holes 35 on the lower surface of the base plate 22, there are vertical holes. Three guide shafts 32 extending in the direction are fixed, and the bracket 34 can be moved up and down along the guide shaft 32 in a state where the guide shaft 32 penetrates the through hole 35. Further, a large diameter portion 36 having a hole diameter larger than that of the upper portion thereof is provided at the lower portion of each through hole 35, while a shaft that can be inserted only into the large diameter portion 36 is provided at the lower end portion of each guide shaft 32. A collar portion 32a having a diameter is formed.

A pair of left and right compression springs (biasing means) 40 are provided between the bracket 34 and the base plate 22.
Has been press-fitted. Specifically, recesses 38 that open upward are formed on the left and right sides of the bracket 34.
A cylindrical protrusion 39 is provided on the bottom surface of the base plate 8, while a circular recess 22a is formed on the lower surface of the base plate 22 above the protrusion 39.
The upper end of the compression spring 40 is fitted in the recess 22a, and the lower end of the compression spring 40 is fitted outside the protrusion 39. The elastic force of the compression spring 40 constantly urges the bracket 34 downward, whereby the bracket 34 is in a non-use state in which it is not subjected to an external force, and as shown in FIG. The step portion at the upper end is held at a position where it comes into contact with the flange portion 32a of the guide shaft 32.

From the left and right lower surfaces of the bracket 34, a projecting portion 41 is provided so as to project downward, and a pressing roller 48 is mounted on the projecting portion 41 so as to be rotatable about a shaft member 44. Specifically, the projecting portion 41 is provided with a screw hole 42, while the shaft member 44 is provided with a male screw 44a at an end thereof, and the pressing roller 48 is mounted around the shaft member 44 via a rolling bearing 46. In this state, the male screw 44a is screwed into the screw hole 42.

The outer peripheral surface of both pressing rollers 48 has a conical surface shape whose diameter decreases toward the outer side in the axial direction.
More specifically, in order from the inner side in the axial direction, the first conical surface 50a and the second conical surface that is more inclined than the first conical surface 50a (that is, the angle of the surface of the shaft member 44 with respect to the axial direction is larger). The surface 50b is formed, and irregularities such as knurls are formed in the circumferential direction on the first conical surface 50a.

On the other hand, the axial direction of the screw hole 42 of the bracket 34 is orthogonal to the feeding direction of the knife 28,
Moreover, it is inclined downward with respect to the horizontal plane by an angle equal to the inclination angle of the first conical surface 50a with respect to the shaft member 44. Therefore, when the shaft member 44 is screwed into the screw hole 42, the both pressing rollers 48 are inclined to an angle at which the lower surface of the first conical surface 50a is substantially horizontal. That is, the two presser rollers 48 are inclined so as to open upward, and by this inclination, the first conical surface of the both presser rollers 48 is prevented while avoiding interference between the two presser rollers 48 and the knife supporting member such as the tip 26. The lower surface of 50a is located in the immediate vicinity of the left and right of the knife 28.

As shown in FIG. 2, a protrusion 19 is formed in the center of the lower surface of the spindle head 18, while a vertical portion 57 extends upward from the front end of the base plate 22 in the feed direction. The projection 19 is covered from the front.
On the upper surface of the upright portion 57, a substantially dovetail-shaped groove 52 as shown in FIGS. 1, 4 and 5 is formed in the feeding direction.
On the other hand, in the spindle head 18, a substantially dovetail-shaped protrusion 54 that can be fitted into the groove 52 is formed on the lower surface of the protrusion 19 as shown in FIGS. The base plate 22 is attached to the spindle head 18 so as to be slidable in the feed direction by the fitting.

The upright portion 57 and the spindle head 1 are
8 so as to straddle the protrusion 19 of the base plate 2
Two position adjusting bolts 56 and 58 are provided on the left and right.

As shown in FIG. 6 (a), at the position where one of the position adjusting bolts 56 is provided, a through hole 22a is provided which penetrates the upright portion 57 in the feed direction, and the protruding portion 19 is A screw hole 18a having an end is provided at a position corresponding to the through hole 22a on the side wall. Then, by inserting the position adjusting bolt 56 into the through hole 22a and screwing the position adjusting bolt 56 into the screw hole 18a, the head of the position adjusting bolt 56 moves the upright portion 57 of the base plate 22 toward the protruding portion 19. It is designed to be pushed in the direction.

On the other hand, the other position adjusting bolt 58
6 (b), the upright portion 57 of the base plate 22 is provided with a screw hole 22b penetrating the upright portion 57 in the feed direction, and the side wall of the protruding portion 19 has a hole having an end. 18b is provided. And
By further inserting the position adjusting bolt 58 into the screw hole 22b, and further rotating the position adjusting bolt 58 with the end portion of the position adjusting bolt 58 abutting the end surface of the hole 18b. , The upright portion 57 of the base plate 22
Is pulled in a direction away from the protrusion 19 of the spindle head 18. Therefore, by appropriately turning the position adjusting bolts 56 and 58, the base plate 22
Also, the entire cutting portion 20 can be fixed at a desired position with respect to the spindle head 18.

Next, the operation of this device will be described.

First, when the cutting unit 20 is not used,
That is, when no external force is applied to both pressing rollers 48, as shown in FIG. 4, the bracket 34 and both pressing rollers 48 are brought to the position where the step portion at the upper end of the large diameter portion 36 contacts the flange portion 32a of the guide shaft 32. Is descending.

From this state, the cloth 14 is placed on the table 12.
And set Z of the spindle head 18 against the upper surface of the cloth 14.
When the cut object 20 is approached from above along the axis, the knife 28 penetrates the cloth 14 as shown in FIGS. It is pressed against the upper surface, whereby the pressing roller 48 and the bracket 34 are integrally raised by the thickness of the cloth 14. Since both compression springs 40 are compressed by the amount of this rise, both pressing rollers 48 are pressed against the upper surface of the cloth 14 by the elastic force thereof.

Next, by operating the position adjusting bolts 56 and 58, the base plate 22 and the cutting portion 20 as a whole are moved back and forth with respect to the spindle head 18, and the position thereof is adjusted. Specifically, as shown in FIG. 2, on the side of a point (cutting point) P where the upper surface of the cloth 14 and the blade 27 of the knife 28 intersect, the upper surface of the cloth 14 and the first pressing roller 48 of the pressing roller 48 are provided. Cone face 50
The cutting portion 20 is adjusted so that the contact point with a is accurately located.

Then, ultrasonic waves are applied to the knife 28 to slightly vibrate the knife 28, and the Y-axis beam 16 is moved in the X-axis direction, or the spindle head 18 is moved in the Y-axis direction along the Y-axis beam 16. By doing so, the knife 28 and the cloth 14 are relatively moved in a predetermined feeding direction.
By this movement, the cloth 14 is cut by the knife 28, and the pressing rollers 48 roll on the cloth 14 while pressing the cloth 14 against the table 12. That is, while the cloth 14 is pressed from above by the rotating pressing rollers 48, the portion between the pressing rollers 48 is cut by the knife 28 that vibrates ultrasonically.

According to such an apparatus, as shown in FIGS.
Compared with the conventional device shown in FIG. 7, the following effects can be obtained.

(A) Since the pressing roller 48 rolls on the cloth 14 to proceed with cutting, the pressing roller 48 hardly drags the cloth 14 unlike a device in which the pressing roller 48 and the cloth 14 are in sliding contact with each other. That is, the yarn deviation and the drag due to the rubbing of the pressing roller 48 are unlikely to occur.

(B) Since the contact between the pressing roller 48 and the cloth 14 is substantially point contact, and the contact area between them is very small,
The pressing force applied from the pressing roller 48 to the cloth 14 can be concentrated near the cutting point P as shown in FIG. Therefore, compared with the conventional device in which the entire surface of the pressing member comes into uniform contact with the cloth 14, the pressing effect is dramatically enhanced.

(C) Since the surface of the pressing roller 48 in contact with the cloth 14 is the circumferential surface, as shown in FIG. The roller 48 can be contacted.

(D) Since the outer peripheral surface of the pressing roller 48 is a conical surface, and the central axes of rotation of the pressing rollers 48 are inclined downward from the horizontal plane, the pressing rollers 48 are opened upward. While avoiding the interference between the tip 41 holding the upper end of the knife 28 or the ultrasonic horn 24 and the presser rollers 48, the contact portion between the presser rollers 48 and the cloth 14 can be brought as close as possible to the cutting point P. By this, the cloth 14 can be more effectively held down. In particular, in this embodiment, the conical surface of the pressing roller 48 is divided into the first conical surface 50a and the second conical surface 50a having different inclination angles.
Of the first conical surface 5 with respect to the fabric 14
Since 0a is pressed in a concentrated manner, the pressing force from the pressing roller 48 to the cloth 14 can be concentrated more near the cutting point P.

(E) Since the first conical surface 50a is provided with irregularities, the first conical surface 50a can be effectively digged into the fabric 14, thereby enhancing the holding effect. .

The present invention is not limited to such an embodiment, and the following modes can be adopted as an example.

(1) In the above embodiment, the rotation center shaft 49 of the presser rollers 48 is oriented in the direction orthogonal to the feeding direction of the knife 28 (that is, the cutting direction).
As shown in (a), the rotation center shaft 49 may be inclined forward (upward in the drawing) in the feeding direction, that is, the angle θ between the rotation center shafts 49 and the cutting line may be less than 90 °. . With such an arrangement, when the presser rollers 48 roll on the cloth 14, as shown in FIG.
This makes it possible to achieve better cutting.

(2) In the above embodiment, the outer peripheral surface of both pressing rollers 48 is a conical surface. However, the outer peripheral surface of both pressing rollers 48 is a cylindrical surface, and its rotation center axis 49 is horizontal. May be. However, if the rotation center shaft 49 is tilted by using the conical pressing roller 48 as in the above embodiment, the tip 26 above the knife 28 and the ultrasonic horn 24 are provided.
And the presser foot roller 48 without interfering with the presser foot roller 48.
There is an advantage that the portion where 8 contacts the cloth 14 can be brought close to the cutting point P.

(3) In the above embodiment, the presser roller 48 is used to press the cloth 14. However, as shown in FIG. 11, for example, the bracket 14 can be rotated left and right about the horizontal shaft 60a. The inverted T-shaped arm 60 is connected, the front and rear parts of the lower end of the arm are connected by shafts 62, and the rotary rollers 64 including rolling bearings are provided around the left and right parts of each shaft 62. The pressing belt 66 may be stretched between the members. Also in this case, the pressing belt 66 can be satisfactorily brought into contact with the cloth 14 with a small frictional force by running on the cloth 14 while pressing the pressing belt 66 against the upper surface of the cloth 14. However, if the pressing roller 48 is used as the pressing member as shown in the above embodiment, the contact area with the cloth 14 can be further reduced, and the pressing force can be concentrated accordingly.

(4) In the above embodiment, the single bracket 3
Left and right presser rollers 48 are attached to 4 and both presser rollers 48
However, the present invention is not limited to this, and each of the right and left elevating members is provided, and a pressing roller or a pressing belt is attached to each elevating member, and these are moved up and down independently of each other. You may make it a structure like this.

(5) Although the cloth 14 is cut as the object to be cut in the above embodiment, the present invention is not limited to this, and is suitably used for a device for cutting paper or other sheet material. be able to.

(6) In the above embodiment, the knife 28 using ultrasonic vibration is used as the cutter for cutting, but in the present invention, regardless of the kind of the cutter, it is appropriately selected according to the object to be cut. Just select it.

[0050]

As described above, according to the present invention, the following effects can be obtained.

First, in the apparatus according to the first aspect, the pressing roller is rotatably mounted on the elevating member which moves up and down with respect to the cutter and its holding member, and both pressing rollers are cut by an urging force applied to the elevating member. Since the presser roller cuts the work while pressing it against and rolling it, the presser roller hardly generates a force to drag the object to be cut, and accordingly, the thread shift or the dragging due to the rubbing of the presser roller is caused. Can be effectively suppressed. Moreover, the contact between the pressing roller and the object to be cut is substantially point contact, and since the contact area between the two is very small, the pressing force applied from the pressing roller to the object to be cut can be concentrated near the cutting point. Compared to the conventional device in which the entire surface of the member is in uniform contact with the object to be cut, the holding effect can be dramatically enhanced. Further, since the surface of the pressing roller that comes into contact with the object to be cut is the peripheral surface, the pressing roller can be brought into good contact with the object to be cut even if the object to be cut has a step or changes in thickness.

Further, in the apparatus according to the second aspect of the present invention, the outer peripheral surface of the pressing roller is a conical surface, and the directions of the central axes of rotation of both pressing rollers are set according to the inclination of the conical surface. Therefore, while avoiding the interference between the support member that supports the cutter and the presser foot rollers, the contact portion between the presser foot rollers and the object to be cut can be brought closer to the cutting point, thereby more effectively pressing the object to be cut. There is an effect that can be done.

Further, in the apparatus according to the third aspect, the conical surface of the pressing roller is a first conical surface and a second conical surface having different inclination angles, and the first conical surface with respect to the object to be cut. Since the pressure contact is performed intensively, the pressing force from the pressing roller to the object to be cut can be concentrated near the cutting point, and the pressing effect of both rotating rollers can be further enhanced.

According to a fourth aspect of the present invention, since the rotation center axis of each of the pressing rollers is inclined forward of the cutter in the feeding direction, when the pressing rollers roll on the object to be cut, the distance between the pressing rollers is increased. Thus, a pulling force can be applied outward in the left-right direction on the object to be cut, which has the effect of smoothing the cutting.

Further, in the apparatus according to the fifth aspect of the invention, since the pressing belt is stretched between the front and rear rotating members provided on the elevating member, the pressing belt is caused to run while being pressed against the object to be cut. Similar to the device of claim 1,
The pressing belt can be satisfactorily pressed against the object to be cut with a small frictional force, and cutting can be performed without any inconvenience.

[Brief description of drawings]

1 is a cross-sectional view taken along line I-I of FIG.

FIG. 2 is a side view of a cutting unit provided in the cutting device according to the embodiment of the present invention.

FIG. 3 is a cross-sectional plan view of the cutting portion.

FIG. 4 is a front view showing a state in which an external force is not applied to both pressing rollers at the cutting section.

FIG. 5 is a front view showing a state in which both pressing rollers are pressed against the cloth at the cutting portion.

6A is a sectional view taken along line AA of FIG. 5, and FIG. 6B is FIG.
FIG. 6 is a sectional view taken along line BB of FIG.

FIG. 7 is an overall perspective view of the cutting device.

FIG. 8 is an explanatory diagram showing a pressure distribution of a pressing force applied to the cloth by the pressing roller.

FIG. 9 is a side view showing a contact state between the pressing roller and a step portion of the cloth.

FIG. 10A is a plan view showing a state in which the central axis of rotation of the pressing roller is tilted to the front side in the knife feeding direction, and FIG.
FIG. 6 is an explanatory diagram showing tension generated on the object to be cut when the pressing roller is rolled in the same state.

FIG. 11 is a perspective view showing an example in which a pressing belt is used in the cutting device.

FIG. 12 is a perspective view illustrating a state in which cloth is cut with a knife that vibrates ultrasonically.

FIG. 13 is a plan view showing a yarn deviation that occurs during the cutting.

FIG. 14 (a) is an explanatory view showing a work for cutting in a direction perpendicular to a portion where the yarn deviation has occurred, and FIG. 14 (b) is an explanatory view showing a state after performing the work.

FIG. 15 is a cross-sectional view showing an example of a device for pressing a material to be cut in a conventional cutting device.

FIG. 16 (a) is a perspective view showing a yarn deviation occurring in the above-described object-to-be-cut-offer pressing device, and FIG. 16 (b) is a front view showing a dragging occurring in the same device.

FIG. 17 is a front view showing a contact state between the pressing member and the stepped portion of the cloth in the device for pressing an object to be cut.

[Explanation of symbols]

 14 cloth (cutting object) 18 spindle head (supporting member) 20 cutting part 24 ultrasonic horn (supporting member) 26 tip (supporting member) 28 knife (cutter) 30 cloth pressing device 34 bracket (elevating member) 40 compression spring ( Energizing Means) 48 Presser Roller 49 Rotation Center Shaft of Presser Roller 50a First Conical Surface 50b Second Conical Surface

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Akira Inoue, 2-4-1, Kitakyuhoji-cho, Chuo-ku, Osaka City Shin-Nippon Koki Co., Ltd. (72) Shinji Nakano 2 Kitakyudera-cho, Chuo-ku, Osaka 4-1-1 Shin-Nippon Koki Co., Ltd.

Claims (5)

[Claims] 1. A cutting device comprising a cutter and a holding member for cutting the cut object in the feeding direction by moving the cutter relative to the cut object in a predetermined feeding direction. An elevating member that is attached to the holding member so as to move integrally with the member in the feed direction and can move up and down with respect to the holding member, and a position that is rotatably attached to the elevating member and is located in the vicinity of the left and right of the cutter And a biasing means for biasing the elevating member in the direction toward the object to be cut, and the pressing roller is moved by the movement of the cutter and its holding member with respect to the object to be cut. A device for holding a cut object in a cutting device, wherein a rotation center axis of the cut object is set so as to roll while being pressed against the cut object. 2. The pressing device for an object to be cut in the cutting device according to claim 1, wherein an outer peripheral surface of the pressing roller is a conical surface whose diameter is reduced toward the outer side in the axial direction, and the conical surface is the conical surface. A pressing device for an object to be cut in a cutting device, wherein a direction of a central axis of rotation of the pressing roller is set so as to press the object. 3. The pressing device for the object to be cut in the cutting device according to claim 2, wherein the conical surface of the pressing roller is a first conical surface in order from the inner side in the axial direction, and the first conical surface. And a second conical surface having a large inclination with respect to the central axis of rotation, and the orientation of the central axis of rotation of the pressing roller is set so that at least the first conical surface is in pressure contact with the object to be cut. The device for holding the object to be cut in the cutting device. 4. The pressing device for an object to be cut in the cutting device according to claim 1, wherein the rotation center axis of the pressing roller is inclined forward in the feeding direction of the cutter. A device for holding objects to be cut in the device. 5. A cutting device comprising a cutter and a holding member for cutting the cut object in the feed direction by moving the cutter relative to the cut object in a predetermined feeding direction, A lifting member mounted on the holding member so as to move integrally with the member in the feeding direction and capable of moving up and down with respect to the holding member, and rotatably mounted on the front and rear portions of the lifting member, and on the left and right sides of the cutter. The rotating roller arranged in the vicinity of the rotating roller, the pressing belt wound between the front and rear rotating rollers, and the urging means for urging the elevating member toward the object to be cut are provided. Pressing the cutting object in the cutting device, characterized in that the position of the cutting belt is set so that the pressing belt travels while being in pressure contact with the cutting object as the cutter and its holding member move relative to the cutting object. apparatus.