JPH0227438B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention is capable of effectively removing moisture and dirt from the surface of intermediate products and finished products during manufacturing processes such as surface treatment, and uniformly applying lubricating oil to the surface. Regarding the improvement of surface treatment equipment, in more detail,
In the first invention, the material to be surface treated 2 is inserted into a pass line C formed so as to pass through the apparatus main body B, and is fed in one direction, and the material to be surface treated is fed in one direction through the introduction hole 3 portion of the pass line C. A jet jet of the fluid 7 is sprayed in the feeding direction of the treatment material 2 to treat the surface of the material 2 to be surface treated. At the same time, the introduction hole 3 is made negative pressure by the flow of the jet jet, and from the introduction hole 3, the main body B of the apparatus is The introduction hole 3 is sealed by letting outside air flow in, and then a jet jet of the fluid 7 is sprayed at the outlet hole 4 portion of the pass line C in the opposite direction to the feeding direction of the material to be surface treated 2 to remove the surface to be treated. At the same time as the surface treatment of the treated material 2 is performed again, the outlet hole 4 is made negative pressure by the flow of the jet stream, outside air is allowed to flow into the apparatus body B through the outlet hole 4, the outlet hole 4 is sealed, and the outlet hole 4 is sealed. The second invention relates to a surface treatment method characterized by rapidly expanding a jet stream within the apparatus body B and then leading the fluid 7 out of the apparatus body B. A jet jet expansion space 1 is provided, and an introduction hole 3 and an outlet hole 4 that open on the outer surface of the apparatus main body B are provided in the apparatus main body B, and between the jet jet expansion space 1 and the introduction hole 3 and between the jet jet expansion space 1 A jet jet passage hole 5 is formed between the jet jet passage hole 4 and the jet jet passage hole 4 to form a pass line C passing through the device body B, and the fluid 7 passes through the jet jet passage hole 5 toward the jet jet expansion space 1. Fluid ejection holes 8 are formed at the boundary between the jet jet passage hole 5 and the introduction hole 3 and at the boundary between the jet jet passage hole 5 and the outlet hole 4 so that the jet jet expands into the jet jet expansion space 1.
This relates to a surface treatment apparatus A characterized in that the apparatus main body B is provided with a discharge hole 9 which is opened to the outer surface of the apparatus main body B.

When performing surface treatment such as plating on wire rods or strips wound on drums, or when using them as precision parts materials that do not like even the slightest dust, the products should be treated before plating or as precision parts materials. Before incorporating into the process, there is a careful pickling process, alkaline washing process, water washing process, or cleaning process using trichloride or detergent to clean the surface and thoroughly remove the treatment liquid and water on the surface before entering the next process.・It must be kept dry, and if it is to be shipped as a product or cold-drawn in the next process, lubricating oil or anti-corrosion oil must be applied uniformly to the surface, or if powder coating is to be applied. The coating powder must be applied uniformly. An example of a surface treatment apparatus used for such purposes is one that utilizes the ejector effect as described in Japanese Patent Publication No. 58-44153. In this case, since the jet jet for utilizing the ejector effect is only ejected in the direction opposite to the wire feeding direction, the scale that is likely to peel off in the forward direction with respect to the wire feeding direction is There is a problem that the jet jet does not separate the material, and since the jet jet is supplied in only one direction, it is not canceled out by the jet jet in the opposite direction, and the jet jet extends long and the shape of the device changes. There was a problem with the increase in size.

The present invention was made in view of the problems of the prior art, and its purpose is to instantly remove even minute deposits on the surface, to make the surface extremely clean, and to Processing and drying can be performed simultaneously and continuously, or lubricating oil, anti-rust oil, and powder can be uniformly applied to the surface, and the surface treatment agent can be completely closed loop without leaking to the outside. To provide a surface treatment method capable of performing surface treatment and having a compact device shape, and an apparatus thereof.

The present invention will be described in detail below with reference to illustrated embodiments.
FIG. 2 shows a first embodiment of the present invention, in which the surface-treated material 2
is the case of wire rod. A guide outer cylinder 11 is fitted on both sides of the T-shaped tube 10, and a first cap nut 12
The jet jet expansion space 1 is fitted into the T-tube 10 at the T-tube 10, and the space sandwiched between the guide outer cylinders 11 within the T-tube 10 is the jet jet expansion space 1. Regarding the jet jet expansion space 1, it may have a cylindrical shape, but it may also have a rectangular tube shape, and a spiral groove 31 may be formed on the inner wall to actively expand the jet jet expansion space 1. Alternatively, a swirling airflow 32 may be formed. or,
The shape of the jet jet expansion space 1 may be formed into an elliptical cross section, a bowl shape, or a funnel shape in accordance with the diffusion of the jet jet. Furthermore, although the shape of the jet jet expansion space 1 is small in the drawings of the embodiment, it is of course not limited to this, and the diameter and length can be made large to increase the capacity and the air pressure or water pressure inside the jet jet expansion space 1 to be high. To prevent the weaker jet jet from overcoming the atmospheric pressure or water pressure in the jet jet expansion space 1 and flowing backwards when the pressure of one jet jet is high and the pressure of the other jet jet is low. It may be done as follows. In the figure, a downwardly extending portion of the T-tube 10 is a discharge hole 9 that opens from the jet jet expansion space 1 to the outside. An inner cylinder insertion hole 13 is bored in the outer half of the guide outer cylinder 11, and a guide inner cylinder 14 is screwed into the inner cylinder insertion hole 13 so as to be able to be screwed forward and backward. The hole bottom 15 of the inner cylinder insertion hole 13 is formed in the shape of a mortar, and a jet jet passage hole 5 communicating from the hole bottom 15 into the T-tube 10 is bored in the center of the guide outer cylinder 11. Incidentally, a spiral groove may be carved in the inner wall of the jet jet passage hole 5. The insertion side end of the guide inner cylinder 14 is shaped like a needle valve 16, and the tip of the needle valve 16 is also tapered to form a small gap between the needle valve 16 and the hole bottom 15. , a fluid ejection hole 8 is formed, and the angle θ between the fluid ejection hole 8 and the introduction hole 3 or the outlet hole 4 is an acute angle of about 15 degrees to 60 degrees. The gap between the fluid ejection holes 8 is adjusted by the screwing amount of the guide inner cylinder 14, and after adjustment, the adjustment nut 17 is tightened to fix the gap. Since the needle valve 16 has a considerably smaller diameter than the inner cylinder insertion hole 13, a fluid reservoir 18 is generated around the needle valve 16. In addition, the fluid jet hole 8
As another embodiment, a spiral groove may be carved in the hole bottom 15 or the tapered surface of the needle valve 16 so that the fluid is spouted into the jet jet passage hole 5 while swirling.

Further, the fluid jet hole 8 is connected to the needle valve 1 as described above.
6 and a tapered hole bottom 15, but a large number of small holes may be formed around the jet passage hole 5. The fluid reservoir 18 is provided with a fluid supply hole 19 communicating with the outside. Further, a ceramic nozzle 20, a carbide nozzle 20, and a wear-resistant resin nozzle 20 are fitted into the tip of the guide inner cylinder 14 to improve wear resistance, and are fixed with a second cap nut 21. Of course, the nozzle 20 may be attached by press fitting. The center of the nozzle 20 and guide inner cylinder 14 is formed to match the outer shape of the wire rod, and is slightly thicker than the outer diameter of the wire rod (that is, the inside of the introduction hole 3 and the outlet hole 4 become negative pressure due to the flow velocity of the jet jet). (The gap is large enough to prevent the fluid 7 from flowing backwards.), the jet jet passage hole 5
Introduction hole 3 having a slightly smaller inner diameter
and a lead-out hole 4 are formed respectively. The fluid 7 supplied to the fluid supply hole 19 includes gas, liquid, and powder, and examples of the gas include air, fluorocarbon, and nitrogen. Freon and nitrogen are used to form a non-reducing atmosphere. In the case of liquids, cleaning solvents such as Triclean are used, as well as polishing liquids and lubricating liquids mixed with water, detergents, and fine abrasives. In the case of powder, very fine abrasive powder is used, and in the case of powder coating, fine coating powder is used. First, the case of draining water using this device will be explained. As shown in FIG. 1, a compressor 23 is connected to the fluid supply hole 19 through a filter 22, and a cyclone 2
Connect to 4. Next, the linear material 2 to be surface treated is inserted from the introduction hole 3 to the outlet hole 4, and the material 2 to be surface treated is fed in one direction on the pass line B at a constant speed. When compressed air is sent from the compressor 23 to the surface treatment apparatus A at the same time as the material 2 to be surface treated is fed, the clean compressed air that has passed through the filter 22 enters the fluid reservoir 18 and then flows into the narrow fluid jet hole 8. The jet is suddenly sent into the jet jet passage hole 5 from there. The compressed air passes through the jet jet passage hole 5 at a rapid speed and brushes the surface of the surface-treated material 2, blowing off moisture on the surface.
Negative pressure is created at the introduction hole 3 and outlet hole 4 due to the flow of compressed air in the jet jet passage hole 5, and brushing also occurs in this area due to the outside air flowing into the introduction hole 3 and outlet hole 4. In particular, in the outlet hole 4, outside air flows in the opposite direction to the surface-treated material 2, and the flow rate of the outside air flowing over the surface of the surface-treated material 2 becomes relatively high, thereby significantly enhancing the draining and drying effects. In other words, the wiper effect is achieved by utilizing the inflowing outside air. In this way, the compressed air containing moisture reaches the jet jet expansion space 1, expands rapidly, and swirls along the cylindrical wall surface to create a swirling airflow 32 around the material to be surface treated 2. Moisture is further removed from the surface of the treated material 2. When the spiral groove 31 is carved in the inner wall of the jet jet expansion space 1, the swirling airflow 3
2 is formed more actively, and the draining/drying effect becomes greater. The swirling airflow 32 that contains sufficient moisture and has proceeded from the inlet hole 3 side and the swirling airflow 32 that has proceeded from the outlet hole 4 side are decelerated at the center of the jet jet expansion space 1 and proceed to the discharge hole 9, where the moisture is removed. enters the cyclone 24 while separating it. Once entering the cyclone 24, moisture is further separated and dry air is discharged to the outside. The amount of compressed air is adjusted by a valve 29. Here, when the capacity of the jet jet expansion space 1 becomes large, the collision between the swirling airflows 32 described above is avoided or alleviated, the pressure within the jet jet expansion space 1 does not become too high, and the weaker jet jet is There is no such thing as backflow. or,
Compressed air is supplied to the fluid supply hole 19 by the compressor 23.
Although the case where the compressed air is blown into the air is shown, the same result can be obtained by suctioning from the discharge hole 9, and depending on the case, the compressed air may be press-in and suctioned at the same time. Furthermore, the supply from the fluid supply hole 19 is of course not limited to only compressed air, and the surface of the material to be surface treated 2 may be cleaned, polished, or oiled by blowing in the aforementioned liquid or powder. be. Furthermore, as described above, it is not limited to just supplying the same type of fluid to the fluid supply holes 19;
It is also possible to supply a different type of material, such as supplying gas to. In this regard, as a representative example, cleaning of the wire with trichlorene will be explained. The wire rod is fed from the introduction hole 3 toward the outlet hole 4 as described above. Triclean is supplied under pressure to the left and right fluid supply holes 19 and is ejected to the jet jet passage hole 5. The jet jet of triclean ejected into the jet jet passage hole 5 strongly brushes the surface of the wire, cleaning and removing not only dust but also a monoatomic film of oil and fat. At this time, even if the cross section of the wire is not circular and has an intricate shape, the jet of triclean is blown deep into the wire, achieving complete cleaning. When Triclean is supplied from the left and right fluid supply holes 19, the flow rate of Triclean flowing on the surface of the wire becomes relatively high in the jet jet passage hole 5 on the outlet hole 4 side, which increases the cleaning effect. be. Further, when the wire passes through the jet jet passage hole 5 and enters the outlet hole 4, the surface of the wire is brushed by the outside air flow sucked in by the negative pressure of the outlet hole 4, and is dried. On the other hand, when Triclean is supplied only to the inlet hole 3 side and outside air is supplied to the outlet hole 4 side, the wire rod can be dried more completely by the jet stream of outside air on the outlet hole 4 side. It is something. FIG. 3 shows a second embodiment of the present invention, in which a surface treatment agent supply hole 30 is provided in the introduction hole 3 separately from the fluid supply hole 19. Compressed air is supplied to the fluid supply hole 19, and the introduction hole The surface treatment agent is inhaled at a negative pressure of 3. FIG. 6 shows a cross section of another embodiment of the shape of the outlet portions of the introduction hole 3 and the outlet hole 4, in which they are formed into a booster shape to match the jet flow. FIG. 4 shows a third embodiment of the present invention, in which a ring-shaped partition wall 28 is provided at the center of the jet jet expansion space 1.
is divided into left and right halves, preventing the swirling airflows 32 from colliding with each other to prevent airflow turbulence and allowing the swirling airflows 32 to be discharged more smoothly. Reference numeral 25 is a chamfer, which makes it easier for the material 2 to be surface treated to pass through the surface treatment apparatus A. In the case of applying lubricant, excess lubricant is stripped off by the outside air sucked into the outlet hole 4, and an appropriate amount of lubricant is applied. In addition, as shown in FIG. 3, the guide middle cylinder 6 may be screwed into the guide outer cylinder 11 and the jet jet passage hole 5 may be formed in the guide middle cylinder 6. In this case, the diameter of the jet jet passage hole 5 may be By preparing a large number of guide inner tubes 6 with different diameters and replacing them as appropriate, it is possible to adapt to wire rods with different diameters. Further, in order to improve the surface treatment ability, a plurality of materials 2 to be surface treated may be fed at the same time. In this case, it is necessary to create a gap between the materials 2 to be surface treated so that a jet jet of the fluid 7 can be blown into the interior through the gap.

7 and 8 show a fourth embodiment of the present invention, which is used when the surface-treated material 2 is in the form of a strip. The device body B is divided into an upper half 26 and a lower half 27. In this case, the introduction hole 3, the outlet hole 4, and the jet jet passage hole 5 are formed in a slit shape to match the material 2 to be surface treated. In addition, the jet jet expansion space 1 is also formed into a rectangular parallelepiped shape,
The compressed air jetted from the jet jet passage hole 5 into the jet jet expansion space 1 flows over the strip-shaped surface-treated material 2 while rapidly expanding, and flows into the discharge hole 9.
In this case, the device main body B is the upper half 26 and the lower half 2.
7, the surface-treated material 2 placed on the pass line C is left as is (in other words, the surface-treated material 2 on the pass line is not cut midway), Installing bolts/
It can be attached to and detached from the surface-treated material 2 by simply removing it. Incidentally, the surface-treated material 2 is not limited to only wires and strips as described above, but also naturally includes rods, and any continuous body is sufficient regardless of length. 9 and 10 show a fifth embodiment of the present invention, in which a third fluid ejection hole 8 is provided in the center of the apparatus main body B, and the third fluid ejection hole 8 is attached to the surface of the material 2 to be surface treated. It is arranged diagonally to the feeding direction. As a result, the fluid 8 adhering to the surface of the surface-treated material 2 is discharged along the fluid ejection holes 8. In this case, the shape of the fluid ejection hole 8 is such that the outlet portion thereof is slit-shaped, and the fluid supply hole 19 and the slit groove 8a communicate with each other through a large number of pores 8b.

FIG. 11 shows a sixth embodiment of the present invention, in which the scale of the surface-treated material 2 is completely removed. That is, a surface treatment device D is installed in front of the surface treatment device A, and the surface treatment device D performs physical treatments such as bending and shot peening on the material 2 to be surface treated to create fine cracks on the surface of the scale. It forms countless numbers and at the same time removes most of the scale. However, although most of the scale is removed in this first step, it cannot be completely removed, and some of the scale is carried over to the next step. Therefore, it has been difficult to apply the product to precision parts after completing the first process. Therefore, the product after the first step is continuously supplied to the surface treatment apparatus A to completely remove the residual scale. That is, a jet jet is blown onto the surface of the surface-treated material 2, and the cracks in the scale are used to blow away the scale by the above-mentioned action. Here, the surface processing device D in the first step is a bending roller (in the embodiment shown in the figure, there are three bending rollers, but of course the number is not limited to this, and it may be two or more than four). ) is used, but it is of course not limited to this.
It includes all methods that can physically form cracks in the scale of the surface-treated material 2, such as shot peening, sandblasting, and whisker shot. or,
Cracks may be formed in the scale by applying plastic working such as twisting the material 2 to be surface treated or twisting it back to its original state after the bending. Further, in the second step, high pressure water and high pressure gas are used, but other cleaning acids such as hydrochloric acid and sulfuric acid may also be used. In this case, since the second step is a closed system, there is no fear of evaporation of the cleaning acid, and therefore a cleaning acid with a higher concentration than usual can be used. However, if a cleaning acid is used, a cleaning device E having the same structure as the surface treatment device A will be installed behind the surface treatment device A. In this way, the surface-treated material 2 is completely descaled, and the specifications for precision parts are satisfied.

In the first invention, the material to be surface treated is passed through a pass line formed to penetrate through the main body of the apparatus as described above, and is fed in one direction. A jet jet of fluid is sprayed in the feeding direction to treat the surface of the material to be surface treated. At the same time, the flow of the jet jet creates a negative pressure in the introduction hole, allowing outside air to flow into the main body of the device through the introduction hole. After that, a jet jet of fluid is sprayed in the direction opposite to the feeding direction of the surface-treated material at the outlet hole of the pass line to resurface the surface-treated material.At the same time, the flow of the jet jet is The outlet hole is made negative pressure by the outlet hole, outside air is allowed to flow into the device body through the outlet hole, the outlet hole is sealed, and the jet jet collides within the device body to cause rapid expansion. In order to derive the However, it can be completely removed, and during the coating process, excess fluid is stripped off to form a uniform coating layer.
Furthermore, as mentioned above, secondly, the inlet and outlet holes are sealed, so the fluid does not leak to the outside, allowing for closed-loop work and keeping the work environment clean. In addition, the jet jet in the forward direction and the jet jet in the opposite direction collide within the device body, causing rapid expansion, and after canceling out the momentum, the fluid is led out of the device body, making the device shape extremely compact. In addition, as mentioned above, since the momentum in the jet jet expansion space is greatly weakened, there is no fluid leakage, and there is an advantage that, together with the sealing effect, the closure is completed.

In addition, in the second aspect of the invention, an introduction hole and an outlet hole which are opened on the outer surface of the apparatus body are provided in the apparatus body, and a jet jet passage hole is formed following the introduction hole and the outlet hole, and the jet jet passage hole and the outlet hole are formed. Fluid ejection holes are formed at the boundary with the introduction hole and the boundary between the jet jet passage hole and the outlet hole, and the fluid passes through the jet jet passage hole at a rapid speed and is ejected toward the inner part of the device body. The surface of the material to be surface treated is vigorously brushed inside the jet jet passage hole, blowing away moisture and dirt on the surface, cleaning the surface, and at the same time contacting the suction outside air at the outlet hole to evaporate the liquid on the surface. It has the advantage of being able to continuously clean and dry the surface in one process, and
When applying lubricant, there is an advantage that excess lubricant oil and antirust oil are stripped off at the outlet hole, allowing uniform application. In addition, since the inner diameter of the introduction hole and outlet hole is smaller than that of the jet jet passage hole, negative pressure is created by the flow of fluid in the jet jet passage hole, and the outside air flowing into the introduction hole and outlet hole causes this pressure to become negative. Brushing of the surface occurs even in parts, which has the advantage of improving the cleanliness and dryness of the surface. Furthermore, since a jet jet expansion space with an inner diameter larger than the jet jet passage hole is provided inside the device body, fluid containing dirt and moisture will reach the jet jet expansion space.
Furthermore, it has the advantage that it rapidly expands and swirls along the wall surface to create a swirling airflow around the surface-treated material, further removing fluid from the surface of the surface-treated material. In addition, since the fluid is spouted into the jet jet expansion space from both the inlet hole side and the outlet hole side, the swirling airflow coming from the inlet hole side and the swirling airflow coming from the outlet hole side have different flow velocities. The jet jets are lowered and proceed to the discharge hole, effectively separating the air from the fluid. At the same time, the jet jets in opposite directions collide with each other to reduce the flow velocity, which allows the device to be made more compact. There are also advantages. In addition, if it is possible to change the flow velocity of the jet jet on the inlet hole side and the outlet hole side, or to improve dryness and cleanliness by supplying different types of fluids, it is possible to provide a discharge hole in the jet jet expansion space. Because there is
There is an advantage in that a jet jet can be created by suctioning through the discharge hole, or a stronger jet jet can be created by pumping fluid into the fluid supply hole and suctioning it through the outlet hole at the same time.

[Brief explanation of drawings]

FIG. 1 is a flowchart of one embodiment of the present invention, FIG. 2 is a longitudinal sectional view of the first embodiment of the invention, FIG. 3 is a longitudinal sectional view of the second embodiment of the invention, and FIG. 4 is a longitudinal sectional view of the second embodiment of the invention. A partial vertical cross-sectional view of a third embodiment of the jet jet expansion space of the present invention, FIG. 5 is a vertical cross-sectional view of the case where a spiral groove is carved in the inner wall of the jet jet expansion space of the present invention, and FIG. 6 is a vertical cross-sectional view of the jet jet expansion space of the present invention. FIG. 7 is a vertical cross-sectional view of the fourth embodiment of the present invention, FIG. 8 is a front view of FIG. 7, and FIG. 10 is a plan view of FIG. 9, and FIG. 11 is a flowchart of a sixth embodiment of the invention. A is the surface treatment device, B is the device body, C is the pass line, 1 is the jet jet expansion space, 2 is the material to be surface treated, 3 is the introduction hole, 4 is the outlet hole, 5 is the jet jet passage hole, 6 is the guide In the middle cylinder, 7 is a fluid, 8 is a fluid jet hole, 9 is a discharge hole, and θ is an angle between the fluid jet hole and the introduction hole or the outlet hole.

Claims (1)

[Scope of Claims] 1. A material to be surface treated is inserted into a pass line formed to penetrate through the main body of the apparatus and fed in one direction, and the feeding direction of the material to be surface treated is determined at the introduction hole portion of the pass line. A jet jet of fluid is sprayed onto the material to treat the surface of the material to be surface treated. At the same time, the flow of the jet jet creates a negative pressure in the introduction hole, allowing outside air to flow into the device body through the introduction hole and sealing the introduction hole. After that, a jet jet of fluid is sprayed in the direction opposite to the feeding direction of the material to be surface-treated at the outlet hole of the pass line to re-treat the surface of the material to be surface-treated, and at the same time, the flow of the jet jet The feature is that the outlet hole is set to negative pressure, outside air is allowed to flow into the device body through the outlet hole, the outlet hole is sealed, the jet jet is rapidly expanded within the device body, and then the fluid is led out of the device body. surface treatment method. 2. The surface treatment method according to claim 1, characterized in that the jet stream that can rapidly expand within the apparatus body is formed as a spiral air stream. 3. A jet jet expansion space is provided inside the device body, and an introduction hole and an outlet hole that open on the outer surface of the device body are provided in the device body, and the jet jet expansion space and the outlet hole are provided between the jet jet expansion space and the introduction hole. A jet jet passage hole is formed between the jet jet passage hole and the introduction hole to form a pass line that penetrates the main body of the device, and the jet jet passage hole and the introduction hole are arranged so that the fluid is ejected toward the jet jet expansion space through the jet jet passage hole. A fluid ejection hole is formed at the boundary between the jet jet passage hole and the outlet hole, and a discharge hole is formed in the apparatus main body to open from the jet jet expansion space to the outer surface of the apparatus main body. surface treatment equipment. 4. The surface treatment device according to claim 3, characterized in that a spiral groove is carved into the inner wall of the jet jet expansion space. 5. The surface treatment apparatus according to claim 3, characterized in that a spiral groove is carved in the jet jet passage hole. 6. The surface treatment device according to claim 3, characterized in that a spiral groove is carved in the fluid ejection hole. 7. The surface treatment apparatus according to claim 3, wherein the inner diameter of the jet jet passage hole is formed so as to gradually increase in the vicinity of the outlet as it approaches the outlet. 8. The surface treatment apparatus according to claim 3, wherein the inner diameter of the jet jet expansion space gradually increases from the entrance to the inner part thereof.