JPS63102898A - Cutting tooth form made of steel - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a steel blade die for forming slits in a seal temporarily attached to a mount.

[Prior Art] In general, in the technical field related to seals, steel blades for forming slits (dividing grooves) in seal pieces temporarily attached to a mount are shown in Figs. 12A and 12B. First, a groove 5 is carved into the base 1 made of synthetic resin using a jig saw or the like, corresponding to the planar shape of the blade 3, and the blade 3 is inserted into the groove 5.
This is done by burying the lower part of the

In addition, as this steel blade mold, one in which the blade is carved out of solid iron material by a skilled worker, and the blade is erected by hardening the carved iron material to form the blade part, is also used. It is being

[Problems to be Solved by the Invention] When the blade portion 3 is embedded in the synthetic resin base 1, the blade portion 3 must be formed into a loop from a steel band. When forming such a loop of fm, the blade part 3
There will always be a seam. This seam is hardly noticeable at first, but as the process of forming the slit in the seal continues over a long period of time,
This seam becomes obvious and causes problems in the forming operation, such as slits not being formed continuously.

In addition, since the blade part 3 is formed from a steel band, it can only be formed when the shape is gentle, and there are drafting restrictions such as, for example, it is impossible to form it when there is a sharp edge. There is a certain problem.

Furthermore, since the blade portion 3 must be buried in the base 1, this base 1 must have rigidity. Therefore, it is impossible to bend the blade shape and attach it to the cylindrical body, which poses a problem in that the method of forming a seal is limited.

In particular, this blade type has the problem that the blade part 3 must be formed manually, which takes a long time and is expensive. In addition, since it is done manually, when forming a large number of blade parts 3 on one base 1, each blade part 3
There is a problem in that the seals are not formed in exactly the same shape and the commercial value of the finished seal is reduced.

On the other hand, even when hand-carving the blade part, the steel plate to be carved must be thick, and as mentioned above, there is a problem that it loses flexibility and becomes impossible to attach to a cylindrical body. However, there are also problems in that it takes a long time and is expensive. Also,
Since it is done by hand, when forming a large number of blades on one steel plate 1, each blade will not be formed in almost the same shape, and the commercial value of the finished seal will decrease. exists in

This invention was made in view of the above-mentioned problems.
The purpose of this invention is to provide a steel blade that has no joints in the blade part, has no restrictions on drafting, can be attached to a cylindrical body, and can be formed in a short period of time at an affordable price. It is to provide a model.

[Means for Solving the Problems] In order to solve the above-mentioned problems and achieve the purpose, a steel blade die according to the present invention includes a steel plate-shaped substrate and a protrusion on the surface of the substrate. It is characterized by having a blade portion formed integrally with the substrate by removing the surrounding area by corrosion.

[Example] Hereinafter, an example of the steel blade die according to the present invention will be described in detail with reference to FIGS. 1 to 11 of the accompanying drawings.

First, the manufacturing apparatus 10 for manufacturing this steel blade mold will be explained.

As shown in FIG. 1, this manufacturing apparatus 10 includes a housing 12 in which an opening t2a is formed in the center of the upper surface. A lid 14 is rotatably attached to the side surface of the housing 12 defining the side edges of the opening 12a via a pair of support shafts 16 so as to releasably close the opening 12a. A handle 14a for rotating the lid 14 is attached to the front edge of the lid 14. An etching chamber 18 is formed within the housing 12 below this opening 12a. That is, the top of the etching chamber 18 can be opened by means of the lid 14.

As shown in FIG. 2, on the bottom surface of this lid body 14 is a steel plate 20, which is the raw material for the blade shape, and which is to be etched.
A mounting plate 22 is provided to which a mounting plate 22 is mounted. Here, this mounting plate 22 is connected to a first drive motor 24 attached to the top surface of the lid 14 and a cam mechanism (not shown in detail) in order to uniformly etch the steel plate 20 during the etching operation. 26, it is rotationally driven so as to stand along a predetermined trajectory as shown in FIG. 3 within the same plane.

Note that the first drive motor 24 described above is covered with a cover 28. This cover 28 has a through hole 30 through which the drive shaft 24a of the first drive motor 24 can be seen.
is formed as shown in FIG. This through hole 30
It will be monitored whether the first drive motor 24 is actually in the driving state. Here, this through hole 3
0 is more occluded by a transparent member.

As shown in FIG. 2, the etching chamber 18 mentioned above is surrounded by a partition plate 32 on all surfaces except the top surface. A large number of injection nozzles 34 are provided in the etching chamber 18 for spraying etching liquid at a predetermined pressure onto the steel plate 20 attached to the mounting plate 22. These injection nozzles 34 are arranged on the same plane, and the steel plate 20 attached to the mounting plate 22 with the lid 14 closed.
It is set so that it faces parallel to.

These injection nozzles 34 are divided into five groups,
The injection nozzles 34 of each group are attached to the upper part of one supply pipe 36 at equal intervals. Each supply pipe 36 is connected to the mounting plate 2
For the same purpose as etching the steel plate 20 uniformly by rotationally driving the steel plate 20 along the locus shown in FIG. It is configured as follows.

The swing mechanism 38 includes a swing lever 42 having a lower end to which each end of each supply pipe 36 is attached, and an upper end rotatably attached to the side wall of the partition plate 32 via a pin 40;
A connecting rod 44 (shown in FIG. 4) that connects the five swing levers 42 on one side of each supply pipe 36 and extends horizontally
and a first rotatably connected to one end of this connecting rod 44.
A connecting rod 46 is provided. In addition, this connecting rod 44
Both ends are restricted by slide bearings 48 to move only in the horizontal direction. Further, one end of the connecting rod 44 projects outward from the partition plate 32.

The swing mechanism 38 also includes a second drive motor 50 disposed inside the housing 12 and outside the etching chamber 18 . Drive shaft 50a of this second drive motor 50
A swing arm 52 is fixed to. A lower end of a second connecting rod 54 is rotatably connected to the tip of the swing arm 52. The upper end of the second connecting rod 54 is rotatably connected to the tip of the first connecting rod 46 described above.

A long groove 56 is formed in the intermediate portion of the second connecting rod 54 and extends along the axial direction thereof.

A support shaft S8 attached to the side wall of the partition plate 32 is inserted into the long groove 56. That is, the second connecting rod 54 is fitted into the long groove 56 of the support 58 so as to be movable in the vertical direction and also rotatable around the support shaft 58.

Since this swing mechanism 38 is configured as described above, when the second drive motor 50 is driven, the drive shaft 50a, that is, the swing arm 52 moves in one direction from the state shown in FIG. For example, it is rotated clockwise. In response to this rotational drive of the swing arm 52, the second connecting rod 54 descends while rotating around the support shaft 58. The first connecting rod 54 is connected to the second connecting rod 54.
The connecting rod 46 moves forward in the horizontal direction in response to the rotation of the second connecting rod 54. In this way, the connecting rod 4 connected to this first connecting rod 46
4 is regulated by a slide bearing 48 and similarly moves forward along the horizontal direction to the state shown in FIG.

Thereafter, in response to the continued rotational drive of the swing arm 52, the second connecting rod 54 moves up while rotating around the support shaft 58. The first connecting rod 46 connected to the second connecting rod 54 is connected to the second connecting rod 54.
It will move backward along the horizontal direction in response to the rotation of .

In this way, the connecting rod 44 connected to the first connecting rod 46 similarly moves back along the horizontal direction to the fifth connecting rod 46.
The state shown in the figure is restored.

Therefore, according to this swing mechanism 38, the connecting rod 44 is reciprocated by the drive of the second drive motor 50, so that the swing lever 42 is driven to swing wJ, and in this way, the injection nozzle 34 The supply pipe 36 to which is attached is also driven to swing.

That is, as the spray nozzle 34 swings, the etching liquid to be sprayed from now on is uniformly sprayed onto the surface of the steel plate 20.

On the other hand, as shown in the first factor again, an etching liquid pressurizing mechanism 60 for injecting etching liquid onto the steel plate 20 through the injection nozzle 34 is provided in the housing 12 described above. This pressurizing mechanism 60 pressurizes etching liquid supplied from an etching liquid storage tank (not shown) and supplies it to each injection nozzle 34 via each supply pipe 36. A third drive motor 64 for driving the pressure pump 62 is provided.

Note that this pressurizing pump 62 and the third drive motor 64 are as follows:
They are connected by an endless belt 66. Further, this pressurizing pump 62 has a pressure of at least 3.0 (kg/am2).
) The structure is such that the etching solution can be pressurized.

Additionally, on the left side of the upper surface of the housing 12, there is a pressure gauge 88 for displaying the supply pressure of the etching liquid in each supply pipe 36.
a to 68e are provided.

Also, although not shown, 1. Each supply pipe 36 is equipped with a pressure regulating valve for adjusting the respective supply pressure.

Further, on the right side of the upper surface of the casing 12, an operation panel 70 is attached which is provided with various operation switches such as a drive start switch and a stop switch for the device, and various meters.

Although not shown, in the housing 12 described above, the etching liquid used in the etching operation is transferred to a partition plate 32.
A recovery mechanism is provided for recovering the etching solution through an outlet 32a formed at the bottom of the etching solution and returning it to the etching solution storage tank.

A manufacturing method for manufacturing a steel blade die using the manufacturing apparatus 10 configured as described above will be described in detail below.

First, as shown in FIG. 7, the shape of the slit to be formed in the seal piece of the seal is drawn on a block 72 using a steel blade die. In this embodiment, the shape of the slit is
It is assumed that it has an oval shape 74 and a star shape 76. still,
The thickness of the drawing lines of these oval shapes 74 and star shapes 76 is determined by the thickness of the steel plate 20, which is the raw material for the steel blade type, of 0. 5 (
mm), it is set to 0.4 (mm).

Thereafter, this block copy 72 is photographed using a plate-making camera to create a negative film. On the other hand, as shown in FIG. 8A,
A steel plate 20 with a thickness of 0.5 mm, which is a raw material for a steel blade mold, is prepared in a predetermined size, and one side is polished using an electric sanding device or the like. Also, a photoresist agent 78 is prepared and the eighth
As shown in Figure B, this photoresist agent 78 is uniformly applied onto the surface of the polished steel plate 20.

The steel plate 20 coated with the photoresist agent 78 in this way
The above-mentioned negative film 80 is placed closely on the surface of
It is exposed to light by an exposure device 82. Thereafter, the exposed photoresist surface is developed, and the unexposed photoresist film is dissolved and removed.

As a result, as shown in FIG. 8D, lines are formed on the steel plate 20 by the photoresist agent 78 corresponding to the drawing lines of the oval 74 and the star 76 of the block 72.

In this way, the oval 74 as the material to be etched is
and a photoresist agent 78 corresponding to the drawing line of the star shape 76
After the wire is formed and the steel plate 20 is formed, the manufacturing apparatus 1
The lid body 14 of No. 0 is opened as shown in FIG. 9, and the material to be etched is attached to the exposed lower surface of the mounting plate 22. Here, this material to be etched is the photoresist agent 7.
The surface on which lines 8 are formed faces downward when the lid body 14 is closed.

Then, after closing the lid 14, the first etching operation is started via the start button on the operation panel 70.

With the start of this first etching operation, the first to third drive motors 24, 50, 64 are started to be driven, and the mounting plate 22 to which the material to be etched is attached is
As shown in the figure, each injection nozzle 34 is rotated while swinging, and the pressure from each injection nozzle 34 is adjusted to 2.0 (kg/cm2) by a pressure regulating valve.
Etching liquid whose pressure is regulated is injected toward the material to be etched.

Here, a ferric chloride solution is used as the etching solution.

This first etching operation is performed when the thickness of the steel plate 20 is approximately 0.
．． In other words, the etching depth is 0.20 (mm). This is continued until it reaches 30 (mm). The time for this is 9 to 1o (minutes), and this time is set by a timer not shown.

In this first etching operation, the etching liquid is sprayed onto the material to be etched at high pressure, so that the surface area other than the one where the photoresist agent remains is etched by the 10A etching process.
As shown in the figure, it is corroded and removed. During this etching process, the etching solution sprayed onto the corroded surface is reflected by this surface and hits the side surface of the portion 20a of the steel plate 20 remaining due to the photoresist agent.

In this way, this portion 20a, as shown,
The cross section becomes chevron-shaped, and the chevron shape is constricted so as to have the minimum width portion 20b directly below the surface portion where the photoresist agent remains.

As shown in FIG. 10A, the first etching operation is completed in the etched state. In this state, all operations are temporarily stopped, and the lid 14 is opened to expose the steel plate 20 that has undergone the first etching operation. After this,
With this steel plate 20 attached to the mounting plate 22, the photoresist agent is removed using a sodium hydroxide solution, as shown in FIG. 10B, so that no photoresist agent remains on the surface of the original steel plate 2o. .

Thereafter, the lid 14 is closed again and the second etching operation is started. With the start of this second etching operation, the driving of the first to third drive motors 24, 50, 84 is started again, and the mounting plate 22 to which the material to be etched is attached is moved as shown in FIG. In addition, each injection nozzle 34 is rotated while swinging, and the pressure from each injection nozzle 34 is adjusted to 2.0 (kg) during the first etching operation by adjusting the pressure regulating valve. Etching liquid whose pressure is regulated to 2.8 (kg/cm2), which is higher than 2.8 (kg/cm2), is injected toward the material to be etched from which the photoresist agent has been removed.

By this second etching operation, the portion above the minimum width portion 20b of the chevron-shaped remaining portion 20a of the steel plate 20 is corroded and removed by the etching liquid jetted out under high pressure, as shown in FIG. 10C. Finally, the blade portion 84 has a sharp top, that is, the sharpness of the etch is 0.
．． A blade portion 84 of 0.01 mm is formed.

In other words, the steel blade mold 88 is formed with the blade portion 84 integrally provided on the surface of the portion defined by the remaining portion as the base 86.

The time required for this second etching operation is set depending on the size of the minimum width portion 20b, and is approximately set in the range of 30 (seconds) to 1 (minute) and 30 (seconds). . Also, during this second etching operation,
Since the entire steel plate 20 will be subjected to corrosive action, the thickness of the steel plate 20 should be approximately 0. 15 (mm)
The thickness of the plate is reduced to .

After the second etching operation is completed, the lid 1 is removed.
4 is opened again, the finally manufactured steel blade mold 88 is removed from the mounting plate 22, and after being sufficiently washed with water by a washing operation, it is dried and completed. In this way, the series of methods for manufacturing the steel blade 88 is completed.

Next, the steel blade 88 manufactured by the manufacturing method described above using the manufacturing apparatus 10 will be described in detail.

As shown in FIG. 11, this steel blade die 88 has a blade portion 84 integrally formed with a base 86 from a steel plate.

The height of the blade of this blade portion 84 is as described above.
When the thickness of the steel plate 20 as a raw material is 0.5 (mm), the first etching operation of 9 to 10 (minutes) is performed, and the first etching operation of 30 (seconds) to 1 (minute) and 30 (seconds) is performed. By performing a second etching operation in the range approximately 0.35 (m
m). The height of the 0.35 (mm) blade varies depending on the sheet being slit, but it is generally 0.35 mm for paper, film, etc.
．． A blade height of 3 (mm) to 0.5 (mm) is sufficient to make a slit, which is the optimum value.

As detailed above, in such a steel blade die 88, the blade part 84 and the base 86 are integrally formed by corrosion, that is, etching, from the steel plate 20, which is the raw material. Forming a seam in the blade portion 84 means that
It disappears completely. In this way, this steel blade mold 88 achieves the effect that no matter how many times the slit forming operation is repeated using this, the same good slitting operation is maintained as at the beginning. It turns out.

In addition, in this steel blade mold 88, the blade portion 84 of this
The shape will be accurately copied as is using the drawing lines 74 and 76 drawn on the block 72 and the scale. In this way, according to this steel blade die 88, its shape can be set freely, and its shape has sharp corners as shown as the star-shaped construction line 76 in FIG. This means that other products can also be used, which means that it has extremely high industrial applicability.

In addition, in this method of manufacturing the steel blade 88, the block copy 7
By continuously drawing a large number of drawing lines of the same shape using a computer-based automatic drawing device or a template, a steel blade mold having a large number of blade parts 84 of the same shape is created at once. 88 can be manufactured. In this way, we have created a steel blade mold 88 with a large number of blades 84 of the same shape, which has conventionally not been possible when manufacturing blades from steel strips or when forming blades by hand carving. It becomes possible to manufacture. Therefore, by using such a steel blade die 88, it is possible to form a large number of slits of the same shape in the seal piece of the seal, thereby achieving the effect of increasing the commercial value of the seal.

In addition, in this method of manufacturing the steel blade 88, the base 86 of the manufactured steel blade 88 is made into a thin plate by etching, so that the steel blade 88 as a whole has flexibility. will have. In this way, the steel blade 88 can be attached, for example, to the outer peripheral surface of a cylindrical body, and can also be attached to the flat surface of a hard flat press plate, and its usage mode This has the effect of making it possible to select from a variety of options.

In addition, in the manufacturing apparatus 10 using such a manufacturing method, the steel blade 88 is manufactured from the steel plate 20 by etching, so the manufacturing time is shorter than in the case of conventional manual manufacturing. , will be significantly shortened. Further, compared to the conventional manual manufacturing of the blade portion from fm, no skilled technique is required at all, and anyone can easily utilize this manufacturing technique.

In this way, according to the manufacturing apparatus 10 using such a manufacturing method, it becomes possible to manufacture a very inexpensive steel blade die 88 within a single hour, and the effect is tremendous.

It goes without saying that the present invention is not limited to the configuration and operation of the embodiment described above, and can be modified in various ways without departing from the gist of the invention.

For example, it is clear that the numerical values described in the above-mentioned embodiment change in accordance with the change in the thickness of the steel plate 20, and do not limit the present invention in any way.

That is, when manufacturing a steel blade using a steel plate with a thickness of 1 (mm), the time required for the first etching operation becomes even longer, and the thickness of the drawing line becomes 0.6 ( mm)
It is preferable to set it to . For example, the plate thickness is 0, 8
(mm) ~ l', in the case of a 5 (mm) steel plate,
The thickness of the drawing line may be set within the range of 0.5 (mm) to 0.7 (mm).

Further, the pressure of the etching liquid employed in the first etching operation is between 1.5 (kg/cm2) and 2.5 kg/cm2.
The pressure of the etching solution used in the second etching operation is preferably in the range of 2.0 (kg/cm2) to 2.8 (kg/cm2).
cm') range is preferable. The important point here is that the pressure of the etching solution in the second etching operation is higher than the pressure of the etching solution in the first etching operation.

Further, the shape of the construction line drawn in FIG. 7 is merely an example, and any shape can be applied as long as it is a loop.

[Effects of the Invention] As detailed above, the steel blade die according to the present invention is provided with a plate-shaped steel substrate, and is provided protrudingly on the surface of this substrate, and the periphery is removed by corrosion. , is characterized by having a blade portion formed integrally with the substrate.

Therefore, according to this invention, there is no seam in the blade part, there are no restrictions on drafting, it can be attached to a cylindrical body, and it can be formed in a short time at a low cost. A steel blade type will be provided.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the steel blade manufacturing apparatus according to the present invention, FIG. 2 is a sectional view showing the internal structure of the etching chamber of the manufacturing apparatus shown in FIG. 1, and FIG. A plan view showing the rotation locus of the mounting plate to which the steel plate is attached, Fig. 4 is a perspective view showing the swinging mechanism of the injection nozzle, and Fig. 5 is a front view showing the overall configuration of the swinging mechanism shown in Fig. 4. Figure 6 is a front view showing the swing mechanism in an operating state different from that shown in Figure 5; Figure 7 is a plan view showing the drawing lines drawn on the block; Figures 8A to 8A. Figure 8D is a sectional view showing the sequential operation of forming lines of photoresist agent corresponding to the drawing lines on a steel plate. Figure 9 shows the manufacturing apparatus shown in Figure 1 with the lid open. 10A to 10c are cross-sectional views sequentially showing the state of a steel plate that is etched in the manufacturing equipment and transformed into a steel blade mold. FIG. 11 is an embodiment of the steel blade mold according to the present invention. FIGS. 12A and 12B are a perspective view showing an example structure, and a perspective view and a cross-sectional view, respectively, showing a blade mold in which the blade part is manually manufactured from a steel band according to the prior art. In the figure, 10... manufacturing equipment, 12... casing, 12a.
...Opening, 14...Lid body, 14a...Handle, 1
6... Support shaft, 18... Etching chamber, 20... Steel plate, 20a... Portion of steel plate remaining due to photoresist agent, 22b... Minimum width portion, 22... Mounting plate,
24...first drive motor, 24a...drive shaft, 2
6... Cam mechanism, 28... Cover, 30... Through hole, 32... Partition plate, 32a... Outlet, 34...
- Injection nozzle, 36... Supply pipe, 38... Rocking mechanism, 40... Support shaft, 42... Rocking lever, 44...
Connecting rod, 46... first connecting rod, 48... slide bearing, 50... second drive motor, 50a
... Drive shaft, 52 ... Swivel arm, 54 ... Second
connecting rod, 56...long groove, 58...support shaft, 6
0... Etching liquid pressurizing mechanism, 62... Pressure pump, 64... Third drive motor, 66... Endless belt, 68a to 68e... Pressure gauge, 70... Operation panel , 72... block copy, 74... ellipse construction line, 7
6...Star-shaped construction line, 78...Photoresist agent,
80... Negative film, 82... Exposure device, 84...
...Blade portion, 86...Base, 88...Steel blade type. 8e Figure 1 Figure 2 3! J Fig. 4 $7 Fig. fisA Fig. 7p Column 8B Fig. 8C Fig. 81]] Fig. 9 Fig. 10A Fig. 108 Fig. 10c Fig. 11

Claims (5)

[Claims] (1) It is characterized by comprising a plate-shaped substrate made of steel, and a blade portion that is provided protruding from the surface of this substrate and is formed integrally with the substrate by removing the surrounding area by corrosion. Steel blade type. (2) The steel blade mold according to claim 1, wherein the substrate has flexibility and can be attached to the circumferential surface of a cylindrical body. (3) The steel blade mold according to claim 1, wherein the substrate has rigidity. (4) The steel blade mold according to claim 1, wherein a plurality of sets of the blade portions are provided on the surface of the substrate. (5) The steel blade die according to claim 4, wherein each of the blade portions is formed in a loop shape.