CN213136920U

CN213136920U - Gasket cutter

Info

Publication number: CN213136920U
Application number: CN201990000444.1U
Authority: CN
Inventors: 宇井润一; 山本隆启
Original assignee: Walka Corp
Current assignee: Walka Corp; Valqua Ltd
Priority date: 2018-02-28
Filing date: 2019-02-26
Publication date: 2021-05-07
Anticipated expiration: 2029-02-26
Also published as: JPWO2019167907A1; JP6887056B2; WO2019167907A1; TW201937082A

Abstract

A gasket cutter having: a blade (4) that moves relative to a gasket material (12) and cuts a gasket (14) from the gasket material; a support mechanism (8) that supports the blade with respect to the gasket material; and vibration sources (6, 28) which vibrate either one or both of the blade and the gasket material, and which can easily manufacture a gasket from the gasket material and can manufacture a gasket with high shape accuracy by moving the blade (4) in association with the vibration.

Description

Gasket cutter

Technical Field

The present invention relates to a gasket manufacturing technique for manufacturing a gasket that replaces an existing product in an emergency in a factory or the like where the gasket is required.

Background

Gaskets are used as sealing members for joints of pipes such as pipe joints, pressure vessels, valves, and pumps. The gasket is of a suitable existing product. However, in the case where there is no prepared gasket or where the gasket is used for a special purpose, it can be assumed that the gasket is manufactured from a gasket material to be used urgently.

As for the gasket manufacturing, the following methods are known: a gasket for a fuel cell is cut and manufactured from a sealing material using a cutter (for example, patent document 1); and manufacturing a gasket by moving to the site by a moving means equipped with a gasket manufacturing apparatus (for example, patent document 2).

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2005-235631

Patent document 2: japanese laid-open patent publication No. 2015-057566

SUMMERY OF THE UTILITY MODEL

Problem to be solved by utility model

In addition, in the production of the gasket, the ring-shaped gasket can be easily cut out from the gasket material by moving the cutter inserted into the gasket material. In this manufacturing method, a so-called burr (burr: an excess portion of protrusion) is generated on the cut surface portion by the blade of the cutter. The burr is raised in the thickness direction of the produced gasket. When a washer having such a burr or a washer having low dimensional accuracy is disposed between flanges and fastened by a bolt and a nut, there are problems that a pressure-equalized state cannot be obtained or that an adjustment work for shifting to the pressure-equalized state takes time. In order to prevent such a problem, there is a problem that a post-process for planarization is required, such as the removal of burrs.

Further, in the production of the gasket, there are problems as follows: sometimes cutting is troublesome due to, for example, the hardness of the gasket material, and the shape accuracy of the gasket manufactured is reduced. In an environment where it is difficult to supply gaskets for ships and the like, it is indispensable to manufacture desired gaskets from gasket materials, and it is required to improve the shape accuracy of the gaskets to be manufactured in emergency.

In view of the above problems, an object of the present invention is to easily manufacture a gasket from a gasket material and to manufacture a gasket having high shape accuracy.

Means for solving the problems

In order to achieve the above object, according to one aspect of the present invention, a washer cutter includes: a blade that moves relative to a gasket material from which a gasket is cut; a support mechanism portion that supports the blade with respect to the gasket material; and a vibration source configured to vibrate one or both of the blade and the gasket material.

In the gasket cutter, the vibration source may be an ultrasonic vibration source.

The gasket cutter may further include a control unit for controlling a vibration output of the vibration source.

In the gasket cutter, the support mechanism may include: a main body portion having the blade and the vibration source; and a support arm that supports the main body, wherein the blade is set to a predetermined distance from a reference point.

In the gasket cutter, the support mechanism may include a guide member that guides movement of the blade.

In the gasket cutter, the guide member may include a cut surface of the gasket material.

In the gasket cutter, a scale may be provided to measure a distance between a reference point and the cutting edge or the cutting point of the gasket material.

In order to achieve the above object, according to one aspect of the method for manufacturing a gasket of the present invention, the method includes: moving a gasket material relative to an edge to cut a gasket from the gasket material; supporting the blade relative to the gasket material; and applying vibration to either or both of the blade and the gasket material.

Effect of the utility model

According to the utility model discloses, can gain following arbitrary effect.

(1) Applying vibration energy to the contact portion of the edge and the gasket material from which the gasket is to be cut can enhance the stress required for cutting.

(2) The occurrence of burrs on the cut surface of the gasket can be suppressed, and the shape accuracy of the gasket can be improved.

(3) The gasket can be easily cut from the gasket material, and the cutting can be speeded up.

(4) Conventional post-processing such as burr removal is not required.

Further, other objects, features, and advantages of the present invention can be further clarified by referring to the drawings and the embodiments.

Drawings

Fig. 1 is a view showing a gasket cutter of embodiment 1.

Fig. 2A is a diagram showing the blade inserted into the gasket material. Fig. 2B is a diagram showing a moving locus of the edge of the cutting washer.

Fig. 3A and 3B are diagrams illustrating a vibration mode of the blade. Fig. 3C is a diagram showing the cutting action of the gasket based on the vibration and movement of the blade.

Fig. 4A is a diagram showing a modification in which a vibration source is provided on the gasket material side. Fig. 4B is a view showing a modification in which the vibration source is provided to both the cutter body portion and the gasket material.

Fig. 5 is a view showing a gasket cutter of embodiment 2.

Fig. 6 is a view showing a gasket cutter of embodiment 1.

Fig. 7A is an exploded perspective view illustrating the support mechanism portion. Fig. 7B is a diagram showing a fixing structure in the nip portion of the cutter main body portion.

Fig. 8 is a diagram showing a support mechanism portion of the washer cutter.

Fig. 9 is a diagram showing an example of hardware of the cutter main body and the drive control unit.

Fig. 10 is a flowchart showing a gasket manufacturing process using the gasket cutter.

Fig. 11A and 11B are diagrams illustrating cutting of the gasket from the gasket material.

Fig. 12A is a diagram showing a guide mechanism of a washer cutter according to embodiment 2. Fig. 12B is a diagram illustrating a guide mechanism of the washer main body portion.

Detailed Description

[ embodiment 1 ]

Fig. 1 shows a gasket cutter of embodiment 1. The configuration shown in fig. 1 is an example, and the present invention is not limited to this configuration.

The gasket cutter 2 shown in fig. 1 includes, for example, a blade 4, a vibration source 6, a support mechanism 8, and a drive control unit 10. The Blade 4 is an example of a Blade (Blade) for cutting, for example, an annular gasket 14 from the gasket material 12.

The vibration source 6 is a vibration generating source that generates mechanical vibration, such as an ultrasonic vibration source including an ultrasonic vibrator. The vibration from the vibration source 6 vibrates the blade 4 of the cut gasket material 12. The blade 4 and the vibration source 6 are included in the cutter body 16.

The support mechanism 8 supports the blade 4 with respect to the gasket material 12. The cutter main body 16 can be attached to and detached from the support mechanism 8.

The drive control unit 10 controls driving of the vibration source 6. The control includes start and stop of the vibration source 6 when cutting the gasket, control of the vibration frequency, control of the vibration power, and the like.

< cutting of gasket >

The gasket material 12 is maintained, for example, horizontal. The blade 4 is supported by the support mechanism 8 so as to be movable relative to the gasket material 12. The position of the blade 4 relative to the reference point 18 is set to the inner radius r of the washer 14.

As shown in fig. 2A, the blade 4 is inserted into the gasket material 12 in a direction perpendicular to the gasket material 12. The blade 4 is vibrated by driving of a vibration source 6. The arrow m indicates the vertical vibration (vertical vibration) of the blade 4.

The blade 4 moves relative to the gasket material 12 in the direction indicated by the arrow N (circling direction) about the reference point 18 while maintaining the oscillating state as shown in fig. 2B. Thereby, the cut portion 20 is formed on the gasket material 12. The cutting portion 20 is a moving track of the blade 4. The gasket 14 is cut out from the gasket material 12 by the surrounding of the cut portion 20. In fig. 2B, 22 denotes a measured cut portion, S denotes a cut start point, and E denotes a cut end point. In the case where the gasket 14 is cut out, S ═ E.

< cutting of the gasket 14 by the blade 4 accompanied by vibration >

It is assumed that the blade 4 is vibrated up and down by the vibration applied to the blade 4. In this case, fig. 3A shows the top dead center of the blade 4, and fig. 3B shows the bottom dead center of the blade 4. The cutting edge 4 moves up and down between the top dead center and the bottom dead center. The top dead center of the blade 4 may be set within the thickness of the gasket material 12 or may be set above the gasket material 12.

In a state where the blade 4 is held on the center axis O by the stress F, as shown in fig. 3A and 3B, when the blade 4 is inserted into the gasket material 12, the cutting width of the gasket material 12 is set to W1. The cutting width W1 of the gasket material 12 is expanded to the cutting width W2 by the movement of the blade 4 in the thickness direction of the gasket material 12. Setting the expanded cutting width to be Δ W, then

ΔW＝W2-W1···(1)。

Depending on the moving width D of the blade 4 in the vertical direction and the angle theta of the blade tip 24,

tanθ＝ΔW/D···(2)。

the cutting width Δ W based on the tip 24 is:

ΔW＝(tanθ)/D···(3)。

by moving the blade 4 to the top dead center and the bottom dead center, the cutting of the cutting width Δ W is performed. That is, since the cutting width Δ W depends on the angle θ of the blade edge 24 that moves up and down, the cutting width Δ W can be increased by increasing the angle θ, and when the stress F is applied to the blade 4 in the circling direction indicated by the arrow N, the cutting width Δ W increases due to the movement of the stress F.

Fig. 3C shows the progress of the cutting length W. When a stress F is applied to the blade 4 along an arrow N (fig. 2B) and the blade 4 is moved around the reference point 18, the gasket 14 is cut from the gasket material 12. Assuming that the number of vertical movements of the blade 4 is n, the total cutting length W is:

W＝ΔW×n＝2πr···(4)

n＝2πr÷ΔW···(5)。

that is, the total cutting length W is a length from the start point S to the end point E (═ S) in units of the cutting width Δ W and in proportion to the number n of vertical movements.

If the frequency fo of the vibration applied to the blade 4 is set to, for example, 22[ kHz ], the gasket 14 can be cut from the gasket material 12 at a considerably fast speed.

< Effect of embodiment 1 >

According to embodiment 1, the following advantageous effects can be obtained.

(1) The vibration and movement of the blade 4 cooperate to cut the gasket 14 from the gasket material 12 with high accuracy and at high speed. The cutting speed of the gasket 14 can be shortened by a fraction compared to the case where the gasket 14 is cut by the operation of only the circling movement of the blade 4.

(2) The cutting stress applied from the blade 4 to the gasket material 12 is increased by the vibration energy, and the generation of burrs at the cut surface of the gasket is suppressed, thereby improving the shape accuracy of the gasket.

(3) The cutting of the gasket can be speeded up, and the gasket 14 can be easily and emergently manufactured.

(4) By cleaning the cut surface, post-processing such as burr removal can be eliminated or simplified.

(5) As compared with the case where the gasket 14 is manufactured only by the circling movement of the blade 4, the necessary stress applied from the operator to the blade 4 and the support mechanism portion 8 can be reduced, so that the gasket 14 can be manufactured quickly, accurately, and safely.

< modification of embodiment 1 and its effects >

As for the vibration source 6 provided in the gasket cutter 2, for example, as shown in fig. 4A, the gasket material 12 cut by the blade 4 may be vibrated by a vibration source 28 provided on the support base 26 side supporting the gasket material 12, instead of the vibration source 6 on the support mechanism portion 8 side. In this case, the vibration source 28 may be driven by the drive control unit 10.

With this configuration, vibration energy can be applied to the cutting surfaces of the blade 4 and the gasket material 12, and the occurrence of burrs on the cutting surfaces of the gasket can be suppressed, thereby improving the shape accuracy of the gasket.

Further, as shown in fig. 4B: the washer cutter 2 has the vibration source 6 in the support mechanism 8, and the vibration source 28 is provided in the support base 26, as in embodiment 1, and these

vibration sources

6 and 28 are driven by the common drive control unit 10. The vibration of the vibration source 6 that vibrates the blade 4 may be the same as the vibration of the vibration source 28 that vibrates the blade 4 via the gasket material 12. In this case, the

vibration sources

6 and 28 may be set to different vibration postures such as different phases between vibrations.

With this configuration, vibration energy can be applied to the cut surfaces of the blade 4 and the gasket material 12, and the effect of embodiment 1 (fig. 1) can be further enhanced, thereby suppressing the occurrence of burrs on the cut surfaces of the gasket and improving the shape accuracy of the gasket.

[ 2 nd embodiment ]

Fig. 5 shows the gasket cutter 2 of embodiment 2. In fig. 5, the same parts as those in fig. 1 are denoted by the same reference numerals.

The cutter body portion 16 of embodiment 2 includes an air passage 30 adjacent to the vibration source 6, for example, as shown in fig. 5. The Air passage 30 may be configured to cool the vibration source 6 and the blade 4 by allowing an Air flow Air to flow in from an Air source 34 connected to the Air inlet 32 and discharging from an Air outlet 36. As another air cooling means, a heat sink may be provided.

As the cooling means of the vibration source 6, a means such as a heat pipe or water cooling may be used instead of air cooling.

< Effect of embodiment 2 >

According to embodiment 2, the following advantageous effects can be obtained.

(1) Overheating of the vibration source 6 and the blade 4 can be avoided, and a reduction in cutting function can be prevented.

(2) The deterioration of the blade 4 accompanied by the vibration can be prevented.

Example 1

< washer cutter 2 >

Fig. 6 shows the gasket cutter 2 of embodiment 1. In fig. 6, the same portions as those in fig. 1 are denoted by the same reference numerals.

The cutter body portion 16 has, for example, a cylindrical housing 38. The vibration source 6 and the air passage 30 are present in the housing 38, and the blade 4 is provided on the lower end side of the cutter body 16. A lead portion 40 connected to the vibration source 6 is drawn out from the upper end of the case 38 and connected to a connector portion 42 of the drive control portion 10. The housing 38 has an air inlet 32 on an upper side thereof. The air inlet 32 is connected to an air source 34 (fig. 5) that generates an air flow. The air source 34 may be a compressor, a vacuum cleaner, or the like.

The support mechanism 8 that supports the cutter body 16 includes a clamp portion 44 and a support arm 46. The cutter body 16, the support arm 46, and the guide 48 are attached to the clamp portion 44. The support arm 46 is attached to the clamp portion 44 in a direction perpendicular to the cutter main body portion 16. The support arm 46 has a scale portion 50 and a core setting portion 52. The gauge portion 50 measures the distance between the reference point 18 and the cutting edge 4 or point of severing of the gasket material 12.

The front surface panel 54 of the drive control unit 10 includes a power button 56, a vibration output adjustment knob 58, and

connector units

42 and 60. The connector portion 60 is connected to a lead portion 64 led out from the foot switch 62.

< cutter body portion 16, grip portion 44 and guide 48 >

Fig. 7A illustrates the support mechanism portion 8 in an exploded manner. The cutter body 16 has a key protrusion 66 on a side surface thereof, and the key protrusion 66 serves as a reference in the circumferential direction of the case 38 attached to the grip portion 44. The key protrusion 66 is a prism protruding from the case 38, and has a thickness setting indicator 68 on a side surface portion, the thickness setting indicator 68 setting the thickness of the gasket material 12 to be cut.

The cutter body 16 has a blade mounting portion 70 on a lower surface thereof. The blade 4 is attached to the blade attachment portion 70, and the cutting direction of the blade 4 is related to the key protrusion 66.

The clamping portion 44 is a block of a highly rigid metal such as stainless steel. The clamp portion 44 has a cutter body mount 72, a support arm mount 74, and a guide mount 76. The cutter body attachment portion 72 is, for example, a circular through hole through which the case 38 of the cutter body 16 is inserted into and removed from the holder portion 44. The cutter body mounting portion 72 has a key groove portion 78 on an inner wall thereof, which engages with the key protrusion 66. As shown in fig. 7B, a screw hole 80 penetrating the cutter body attachment portion 72 is formed in a side surface of the clamp portion 44, and a fixing screw 82 is attached to the screw hole 80.

When the key protrusion 66 of the case 38 attached to the cutter body attachment portion 72 is engaged with the key groove portion 78, the position of the cutter body 16 and the blade 4 on the horizontal plane is determined. If the thickness setting indicator 68 is brought into abutment against the upper surface of the grip portion 44, the height positions of the cutter main body portion 16 and the blade 4 are determined in accordance with the thickness of the gasket material 12 to be cut. In this positioned state, when the fixing screw 82 attached to the screw hole 80 is tightened until it abuts against the case 38, the case 38 of the cutter body portion 16 is fixed to the clamp portion 44.

The support arm mounting portion 74 is, for example, a hexagonal mounting hole to conform to the cross-sectional shape of the support arm 46. The support arm mount 74 is formed in a direction perpendicular to the cutter body mount 72. A screw hole 84 penetrating the support arm attachment portion 74 is provided in a side surface of the clamp portion 44, and a fixing screw 86 is attached to the screw hole 84. Therefore, after the support arm 46 is inserted into the support arm attachment portion 74, the support arm 46 is fixed to the clip portion 44 by tightening the fixing screw 86 attached to the screw hole 84 until the support arm 46 abuts.

The guide mounting portion 76 has a plurality of threaded holes 88 and positioning holes 90, for example, around the cutter body mounting portion 72. The guide 48 has a pair of guide leg portions 94 of the same height opposed to each other with the bridge portion 92 interposed therebetween. The bridge portion 92 has: a through hole 96 corresponding to the threaded hole 88; and a positioning projection 98 that engages with the positioning hole 90. The guide 48 is positioned and fixed to the clamping portion 44 by engaging the positioning convex portion 98 with each positioning hole 90 to position the guide 48 to the clamping portion 44 and by inserting the fixing screw 100 into each threaded hole 88 through the through hole 96.

< support mechanism part 8 and cutter body part 16 >

Fig. 8 shows the support mechanism portion 8 and the cutter main body portion 16 of the gasket cutter 2. The core setting portion 52 has a body portion 102 attached to the support arm 46. The body 102 has a pin 104 at a lower end, a through hole 106 in the middle, and a screw hole 108 on a top side. The support arm 46 extends through the through hole 106. Thereby, the body portion 102 can be moved to a desired position of the support arm 46. A set screw 110 is mounted in the threaded hole 108. That is, after the body portion 102 is moved to a desired position, the distal end of the needle portion 104 of the core setting portion 52 can be set to the reference point 18 by fastening the fixing screw 110 until the needle portion abuts against the support arm 46.

< cutter body part 16 and drive control part 10 >

Fig. 9 shows hardware of the cutter main body portion 16 and the drive control portion 10. The configuration shown in fig. 9 is an example, and the present invention is not limited to this configuration.

The cutter body 16 includes an ultrasonic transducer 112 as an example of the vibration source 6. The ultrasonic transducer 112 generates ultrasonic vibration by the drive output of the drive control unit 10, and vibrates the blade 4.

The drive control unit 10 includes a power supply unit 114, a drive unit 116, and a control unit 118. The driving power source is, for example, a commercial ac power source 120, which supplies power to the power source unit 114 via a power switch 122. The power switch 122 can be switched by operation of the power button 56 (fig. 6).

The power supply unit 114 includes a voltage converter, a rectifier, a switching power supply circuit, and the like, and generates a power supply output for driving the drive unit 116 and the control unit 118.

The driving unit 116 includes an oscillating unit that drives the ultrasonic transducer 112 by oscillating. The control unit 118 includes a control circuit for controlling the oscillation, the oscillation frequency, the oscillation level, and the like of the ultrasonic transducer 112 by the driving unit 116.

The control unit 118 includes an output adjustable potentiometer 124 that is adjusted by operation of the vibration output adjustment knob 58. The ultrasonic vibration level is adjusted to a level adjusted by the output adjustable potentiometer 124.

The foot switch 62 has a normally open contact 126, and if the normally open contact 126 is closed by a foot of the operator or the like, a driving output is applied from the driving unit 116 to the ultrasonic transducer 112, thereby generating ultrasonic vibration.

< Process for producing gasket 14 >

Fig. 10 shows an example of a manufacturing process of the gasket 14. In this manufacturing process, S and the number indicate an example of the process and its order.

In manufacturing the gasket 14, it is premised that the shape and size of the gasket 14 to be manufactured are determined, and the cutter main body portion 16 and the core setting portion 52 are attached to and supported by the support mechanism portion 8 of the gasket cutter 2, and the size is set. After this setting, it is necessary to insert the needle portion 104 of the core setting portion 52 with respect to the reference point 18 of the gasket material 12 and insert the blade 4 into the gasket material 12.

After such initial setting (S101), the power switch 122 is turned on (S102). When the power is turned on, power is supplied from the power supply unit 114 to the control unit 118, and the control unit 118 is in a driving state after reset.

When the normally open contact 126 of the foot switch 62 is closed, the drive output of the drive unit 116 is applied to the ultrasonic transducer 112, and ultrasonic vibration starts (S103).

In this state, the blade 4 is supported with respect to the gasket material 12, and when the stress F in the circling direction (N) is applied to the blade 4 by the clamping portion 44, the blade 4 vibrates and moves in a circling manner, thereby cutting the gasket material 12.

From this cut state, it is determined whether the cut state of the gasket material 12 is good (S104), and in the case where the cut strength of the gasket material 12 is low, the output adjustable potentiometer 124 is operated by vibrating the output adjustment knob 58 to increase the vibration level (S105). In the case where the cutting strength of the gasket material 12 is excessively strong, the output adjustable potentiometer 124 is operated by vibrating the output adjustment knob 58 to reduce the vibration level (S106).

Such a cutting operation is continued, and the gasket 14 is cut out from the gasket material 12 (S107).

Cutting the gasket 14 from the gasket material 12

Fig. 11A illustrates one manner of cutting the gasket 14 from the gasket material 12. In this example, assuming a plate-shaped gasket material 12, the disc-shaped gasket 14 is cut at a radius r2 with the reference point 18 as the center. Thereafter, the washer 14 is cut into a circular shape with the radius r1 while maintaining the reference point 18 of the washer 14, whereby the washer 14 can be formed into a doughnut shape.

After cutting the gasket 14, as shown in fig. 11B, the gasket 14 having the radii r3 and r4 larger than the radius r2 can be formed from the remaining gasket material 12 while maintaining the reference point 18.

< Effect of example 1 >

According to embodiment 1, the following arbitrary effects can be obtained.

(1) Vibration is applied from the vibration source 6 in conjunction with the movement of the blade 4, so that the cutting stress of the gasket material 12 is increased, thereby making it easy to cut the gasket 14 from the gasket material 12 and increasing the cutting speed. Compared with the conventional cutting only by the movement of the blade, the cutting speed can be reduced to about one third.

(2) The production of the gasket 14 can be accelerated, the production can be performed accurately and safely, the burden on the worker can be reduced by the increase in the cutting force, and the gasket 14 can be easily produced even if the thickness of the gasket material 12 is increased.

(3) The operator can produce the desired washer 14 by simply supporting the cutter main body portion 16 and moving the supporting mechanism portion 8.

(4) Since the cutter body portion 16 can be provided in the support mechanism portion 8 and the drive control portion 10 for driving the vibration source 6 can be provided separately from the support mechanism portion 8, the operability can be improved.

(5) The drive unit 116 can be started and stopped by the foot switch 62, and the operator can concentrate on the operation of the support mechanism 8, thereby improving safety. In an emergency, the vibration of the ultrasonic transducer 112 can be easily stopped by simply opening the normally open contact 126 of the foot switch 62, which is safe.

(6) The produced gasket 14 can be reduced in the rising burr and the gasket 14 can be produced in the same way as the existing products.

Example 2

Fig. 12A shows the gasket cutter 2 of embodiment 2. In fig. 12A, the same portions as those in fig. 1 are denoted by the same reference numerals.

In example 1, an example of the cutting process in which the needle portion 104 of the core setting portion 52 abuts on the reference point 18 and the reference point 18 is set as the center is shown. In embodiment 2, the cutter guide 128 may be provided to the gasket material 12, the movement of the gasket cutter 2 may be guided by the cutter guide 128, and the gasket 14 may be cut into the shape of the cutter guide 128.

In this embodiment 2, the cutter guide 128 has a guide rail portion 130. For example, the guide rail portion 130 is a groove portion.

In this case, a guide leg portion 94 is provided on the lower surface side of the nip portion 44. The guide leg 94 corresponds to one guide leg 94 of the guide 48 of embodiment 1. On the other hand, a guide shaft 132 is disposed between the guide leg 94 and the guide leg with a blade 4 interposed therebetween. That is, in this example, the guide 48 is constituted by the guide shaft 132 and one guide leg 94.

The guide shaft 132 may be engaged with the guide rail portion 130 of the cutter guide 128 and may slide along the guide rail portion 130. Thus, the cutter body portion 16 can cut the washer 14 having the shape assumed by the cutter guide 128, following the rail portion 130 of the cutter guide 128.

In fig. 12B, assuming that the thickness of the gasket material 12 is t1, the thickness of the cutter guide 128 is t2, the depth of the guide rail portion 130 is t3, the lower surface of the clamp portion 44 is a reference plane, the blade edge position (bottom dead center) of the blade 4 with respect to the reference plane is h1, the end position of the guide leg portion 94 is h2, and the end position of the guide shaft 132 is h3, the thickness of the gasket material 12 is t1, the thickness of the cutter guide 128 is t2, the depth of the guide rail portion 130 is t3

h1-h2≥t1···(6)，

The distance Δ t between the bottom of the rail portion 130 and the surface of the gasket material 12 is in the following relationship:

Δt＝h2-h3···(7)

Δt＝t2-t3···(8)。

< Effect of example 2 >

According to embodiment 2, the following arbitrary effects can be obtained.

(1) The same effects as in embodiment 1 can be obtained.

(2) The cutting force is increased, and therefore the washer 14 corresponding to the shape of the cutter guide 128 can be easily manufactured regardless of the reference point 18.

(3) According to the washer cutter 2, the support arm 46 is removed, and the restraint of the support arm 46 is released, so that the operator can freely operate the cutter body portion 16, and the washer material 12 can be cut into a shape regulated by the cutter guide 128. Further, the washer cutter 2 can be operated without using the cutter guide 128 to cut the washer material 12 into a desired shape.

< example of experiment >

In the gasket cutter 2, as an example of a basic specification, a machining range is set to 50[ mm ] to 1000[ mm ] (manual size adjustment), and the drive control section 10 uses an AC power supply of 100[ VA ] as a power supply input. The rated output is 30[ W ].

According to the experiment, the power consumption is low, and the working speed is improved to about 3 minutes compared with the 10 minutes of the prior gasket cutter.

The produced gasket 14 is suppressed from being burred, and the shape accuracy of the gasket 14 as a product is greatly improved.

[ other embodiments ]

The embodiments of the present invention include the following modifications.

(1) In embodiments 1 and 2, regarding the positioning of the cutter body portion 16 with respect to the grip portion 44, instead of the key protrusion 66 of the cutter body portion 16, the key groove portion 78 on the grip portion 44 side, the housing 38 may take a prismatic shape, and the cutter body mounting portion 72 may take a square cylindrical shape. In this configuration, positioning is performed by polygonal fitting, and the key convex portion 66 and the key groove portion 78 can be removed.

(2) The vibration source includes an ultrasonic transducer, but may include a mechanism for converting rotation of a motor or the like into vertical vibration.

(3) As the guide member of the cutter body portion 16, the guide 48 is used in embodiment 1, and the cutter guide 128 is used in embodiment 2, but the present invention is not limited to this. The cut surface of the gasket material 12 may be used as a guide member for the cutter body 16. The cut surface may be used together with the guide 48 of embodiment 1, or the cut surface may be used together with the cutter guide 128 of embodiment 2.

As described above, the most preferable embodiment and the like of the configuration of the present invention have been described. The present invention is not limited to the above description. Those skilled in the art can make various modifications and variations according to the gist of the invention described in the claims or disclosed in the embodiment for carrying out the invention. Such modifications and variations are certainly included in the scope of the present invention.

Industrial applicability

According to the present invention, the cutting force can be increased by applying the vibrating force to the blade moving in the surrounding direction, the gasket can be easily manufactured from the gasket material, and the cutting speed can be increased.

Description of the reference symbols

2: a gasket cutter; 4: a blade; 6: a vibration source; 8: a support mechanism part; 10: a drive control unit; 12: a gasket material; 14: a gasket; 16: a cutter body portion; 18: a reference point; 20: a cutting section; 22: a measured cutting part; 24: a blade tip; 26: a support table; 28: a vibration source; 30: an air passage; 32: an air inlet; 34: an air source; 36: an air outlet; 38: a housing; 40: a lead part; 42. 60: a connector section; 44: a clamping portion; 46: a support arm; 48: a guide; 50: a scale section; 52: a core setting section; 54: a front surface panel portion; 56: a power button; 58: a vibration output adjustment knob; 62: a foot switch; 64: a lead part; 66: a key protrusion; 68: a thickness setting display; 70: a blade mounting portion; 72: a cutter body mounting portion; 74: a support arm mounting section; 76: a guide mounting portion; 78: a key groove portion; 80: a threaded hole; 82: a set screw; 84: a threaded hole; 86: a set screw; 88: a threaded hole; 90: positioning holes; 92: a bridge portion; 94: a guide leg portion; 96: a through hole; 98 locating the boss; 100: a set screw; 102: a main body portion; 104: a needle portion; 106: a through hole; 108: a threaded hole; 110: a set screw; 112: an ultrasonic vibrator; 114: a power supply unit; 116: a drive section; 118: a control unit; 120: a commercial alternating current power supply; 122: a power switch; 124: outputting an adjustable potentiometer; 126: a normally open contact; 128: a cutter guide; 130: a guide rail portion; 132: a guide shaft.

Claims

1. A washer cutter, characterized in that,

the gasket cutter has:

a blade that moves relative to a gasket material from which a gasket is cut;

a support mechanism portion that supports the blade with respect to the gasket material; and

and a vibration source configured to vibrate one or both of the blade and the gasket material.

2. The gasket cutter as claimed in claim 1,

the vibration source is an ultrasonic vibration source.

3. The gasket cutter as claimed in claim 1,

the gasket cutter further includes a control unit that controls a vibration output of the vibration source.

4. The gasket cutter as claimed in claim 1,

the support mechanism includes:

a main body portion having the blade and the vibration source; and

a support arm that supports the main body portion,

the blade is set to be a predetermined distance from the reference point.

5. The gasket cutter as claimed in claim 1 or 4,

the support mechanism includes a guide member that guides movement of the blade.

6. The gasket cutter as claimed in claim 5,

the guide member includes a cut surface of the gasket material.

7. The gasket cutter as claimed in claim 1 or 4,

the gasket cutter has a scale that measures the distance between a reference point and the cutting point of the blade or gasket material.