Spraying device

Abstract

To provide a spouting apparatus for spatter adhesion prevention liquid, which can be downsized and eliminate the possibility that a circumference thereof is soiled, by preventing the spatter adhesion prevention liquid from scattering, and can enhance force for removing spatters by spouting all compressed air into a shield nozzle, when spouting compressed air, in order to remove the spatters.SOLUTION: The spouting apparatus is constituted of: a base having a through-hole formed in a vertical direction thereon; a movable member having a holding hole penetrating through in the vertical direction formed therein; a cylindrical drainage member, inserted into the holding hole of the movable member to fix an upper end thereof, whose lower end is inserted through the through-hole of the base; a receiving member, in which a through-hole in a trumpet shape that increases in diameter as going upward is formed, which is fitted and fixed to the holding hole of the movable member, where an upper end of the drainage member is inserted into the through-hole in a trumpet shape from below; an energizing mechanism that energizes the movable member in a direction in which the member is separated from the base; and a sensor that outputs when an interval between the base and the movable member becomes smaller than a certain interval.SELECTED DRAWING: Figure 4A

Description

[Technical field]

[0001] The present invention relates to a spraying device that sprays a spatter adhesion prevention liquid for applying a spatter adhesion prevention liquid to a shield nozzle or contact tip of a welding torch used in gas arc welding, or sprays compressed air for removing spatter adhering to the shield nozzle or contact tip. [Background technology]

[0002] Conventionally, as a spraying device of this kind, a spraying device that is driven by a rotation drive as shown in FIG. Actuator There was a spraying device that sprayed a mist of anti-spatter adhesion liquid from a nozzle hole 52 opened on the top surface of 51 toward a shield nozzle 53 of a welding torch to apply the anti-spatter adhesion liquid to the shield nozzle 53 and the contact tip 54, and sprayed compressed air from the nozzle hole 52 to remove spatter adhering to the shield nozzle 53 and the contact tip 54. (See, for example, Patent Document 1.) [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 7-314142 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-mentioned system, when applying the sputter adhesion prevention liquid, actuator 51 is installed in container 55 with an open top to prevent the mist-like sputter adhesion prevention liquid from scattering and soiling the surroundings, and to recover excess sputter adhesion prevention liquid. However, this makes the spraying device large, and because container 55 is open at the top, it does not provide sufficient spray prevention effect, and there is a risk of soiling the surroundings of the device. Furthermore, when compressed air is sprayed to remove sputter, the sprayed compressed air is sprayed not only inside shield nozzle 53, but also outside shield nozzle 53, resulting in a problem that the spray force inside shield nozzle 53 is weakened.

[0005] The present invention aims to solve the above problems, and to provide a spraying device for preventing spatter adhesion preventing liquid, which can be made smaller by preventing the scattering of the spatter adhesion preventing liquid, and which eliminates the risk of soiling the surrounding area, and which has a strong spatter removal power by spraying all of the compressed air into the shield nozzle when compressed air is sprayed to remove spatter. [Means for solving the problem]

[0006] The ejection device of the present invention, which has been made to solve the above problems, comprises a base having a through hole formed in the vertical direction, a movable member having a holding hole formed therein that also passes through in the vertical direction, and a cylindrical ejection device having an upper end inserted into the holding hole of the movable member and fixed to the movable member and a lower end inserted into the through hole of the base. Discharge Parts A trumpet-shaped through hole is formed, the diameter of which increases as it goes upward, and is fixed to the holding hole of the movable member by being engaged therewith. Discharge Parts The device comprises a receiving member whose upper end is inserted from below into the trumpet-shaped through hole, a biasing mechanism which biases the movable member in a direction away from the base, and a sensor which outputs an output when the distance between the base and the movable member falls below a certain level, and is characterized in that the peripheral wall of the trumpet-shaped through hole in the receiving member is pressed by the tip of the shield nozzle of the welding torch, and when the distance between the base and the movable member falls below a certain level, the sensor outputs an output, and the ejection material supplied to the movable member is ejected through the gap between the outer periphery of the discharge member and the peripheral wall of the trumpet-shaped through hole in the receiving member, and is discharged to the outside through the through hole in the discharge member.

[0007] It is preferable that a plurality of grooves inclined in the vertical direction are provided on the outer peripheral surface of the discharge member, and the ejected material is ejected through the grooves. This is the invention according to claim 2. Effect of the Invention

[0008] In the invention of claim 1, a base having a through hole formed in the vertical direction, a movable member having a holding hole formed therethrough in the vertical direction, and a cylindrical member having an upper end inserted into the holding hole of the movable member and fixed to the movable member and a lower end inserted into the through hole of the base. Discharge Parts A trumpet-shaped through hole is formed, the diameter of which increases as it goes upward, and is fixed to the holding hole of the movable member by being engaged therewith. Discharge Parts The device is made up of a receiving member, the upper end of which is inserted from below into a trumpet-shaped through hole, a biasing mechanism that biases the movable member in a direction away from the base, and a sensor that outputs an output when the distance between the base and the movable member becomes equal to or smaller than a certain value. The peripheral wall of the trumpet-shaped through hole of the receiving member is pressed by the tip of the shield nozzle of the welding torch, and the sensor outputs an output when the distance between the base and the movable member becomes equal to or smaller than a certain value. 、 The material supplied to the movable member is sprayed out through the gap between the outer periphery of the discharge member and the peripheral wall of the trumpet-shaped through hole in the receiving member, and then discharged to the outside through the through hole in the discharge member. This allows the size of the spatter adhesion prevention liquid spraying device to be reduced, eliminating the risk of soiling the surrounding area. Furthermore, when compressed air is sprayed to remove spatter, all of the compressed air is sprayed into the shield nozzle, which has the effect of strengthening the spatter removal power.

[0009] In the invention of claim 2, a plurality of vertically inclined grooves are provided on the outer peripheral surface of the discharge member, and the ejected material is ejected through the grooves. This has the effect of enabling the spatter adhesion prevention liquid to be applied evenly, and also enabling the spatter to be removed uniformly. [Brief description of the drawings]

[0010] [Figure 1] 1 is a cross-sectional view showing an embodiment of the present invention. [Diagram 2] FIG. 2 is a plan view of FIG. [Diagram 3] FIG. 2 is a bottom view of FIG. [Figure 4A] FIG. 11 is a cross-sectional view for explaining the operation of the ejection device, showing a state in which the torch has been moved above the ejection device. [Figure 4B] FIG. 4B is a cross-sectional view of the torch movable part in FIG. 4A in a pressed state. [Diagram 5] FIG. [Figure 6] FIG. 6 is a front cross-sectional view of FIG. 5. [Figure 7] FIG. 11 is a cross-sectional view showing a conventional example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] A first embodiment of the present invention will be described below with reference to FIGS. 1 to 4A and 4B.

[0012] Reference numeral 1 denotes a cylindrical base, which has a through hole 2 penetrating vertically in the center thereof, and three insertion holes 3 penetrating vertically with thin-diameter portions 3a formed in the middle thereof, which are formed so that the lines connecting the insertion holes 3 form an equilateral triangle, and a recess 4 for mounting a sensor is formed on the outer periphery of the top surface. Reference numeral 5 denotes a screw hole for mounting the base 1, which is provided from the bottom surface toward the top.

[0013] A movable member 6 has a diameter substantially the same as that of the base 1. A large diameter portion 7a is provided from the top to the bottom of the movable member 6. Middle diameter part The retaining hole 7 has three stages, namely, a lateral hole 8a having an open side and a large diameter portion 7a at the top end of the lateral hole 8a. Middle diameter part A hook-shaped through hole 8 is formed, which is made up of a vertical hole 8b that opens into a step portion 7d between the base 1 and the base 1. Insertion hole At a position corresponding to 3, a screw hole 9 is formed facing upward.

[0014] 10 is a three-stage movable member 6 Holding hole 7 of Large diameter section 7a The receiving member 10 has the same diameter as the receiving member 10, and a trumpet-shaped through hole 11 that increases in diameter toward the top is formed in the center of the receiving member 10, and a foot portion 12 is formed on the bottom surface around the through hole 11 with four notches 12a provided from the outer periphery toward the center.

[0015] 13 is a cylindrical discharge member, and the upper end of the discharge member is provided with three stages of the movable member 6. Holding hole 7 In the middle of Medium diameter part 7b At the top of the large diameter portion 14, a projection 15 having a smaller diameter than the lower end of the trumpet-shaped through hole 11 of the receiving member 10 is formed.

[0016] Reference numeral 16 denotes a bolt having a threaded portion 16a formed at its tip which is screwed into the screw hole 9 on the bottom surface of the movable member 6, and reference numeral 18 denotes a compression coil spring. The bolt 16 and the compression coil spring 18 together constitute a biasing mechanism which constantly biases the movable member 6 in a direction (upward) away from the base 1.

[0017] Reference numeral 19 denotes a fiber sensor attached to a recess on the outer periphery of the upper surface of the base 1. The fiber sensor 19 measures the distance between the base 1 and the movable member 6 and outputs a signal when the distance between the base 1 and the movable member 6 falls below a certain value.

[0018] 20 is the movable member 6 Through hole Reference numeral 21 denotes a connector for connecting a tube (not shown) for supplying the mist-like anti-spatter adhesion liquid or compressed air that is the ejection material attached to 8 from the outside, and 21 denotes a connector for connecting a tube (not shown) that is attached to the lower part of the through hole 22 of the ejection member 13 and ejects the ejection material, 23 and 24 are gaskets, and 25 is an E-ring.

[0019] Next, the assembly method of the above embodiment will be described. The discharge member 13 with the gasket 23 attached is inserted from above into the three stages of retaining holes 7 of the movable member 6, and the large diameter portion 14 at the upper end is fitted into the medium diameter portion 7b of the retaining hole 7 of the movable member. After that, the gasket 24 is attached to the movable member 6, the receiving member 10 is fitted into the large diameter portion 7a of the retaining hole 7, and an E-ring 25 is attached, and the discharge member 13 and receiving member 10 are attached and fixed to the movable member 16.

[0020] As a result, the movable member 6 hook-shapedA passage for the ejected material is formed between the bottom surface of the receiving member 10, the step portion 7d between the large diameter portion 7a and the medium diameter portion 7b of the retaining hole 7, and the upper surface of the large diameter portion 14 of the discharge member 13, from the entire outer periphery of the through hole 8 through the cutout portion 12a provided in the foot portion 12 of the receiving member 10, and between the outer periphery of the protrusion of the discharge member 13 and the peripheral wall of the trumpet-shaped through hole 11 of the receiving member 10, and opens upward.

[0021] Furthermore, the sensor 19 is attached to the recess 4 of the base 1 through the three insertion holes 3. Each A compression coil spring 18 is inserted from above so that its end abuts against the upper surface of the small diameter portion 3a of the insertion hole 3, and a bolt 16 is inserted from below so that its shaft is positioned inside the compression coil spring 18 and the threaded portion 17 at the tip is screwed into the screw hole 9 of the movable member 6 to fix the biasing mechanism to the movable member 6. The head of the bolt 16 abuts against the lower surface of the small diameter portion 3a of the insertion hole 3.

[0022] The method of applying the spatter adhesion prevention liquid by the above-mentioned spraying device will be described with reference to Figs. 4A and 4B. As shown in Fig. 4A, the welding torch 26 is moved so that the shield nozzle 27 is at the center position of the movable member 6. As shown in Fig. 4B, the welding torch 26 is lowered so that the shield nozzle 27 of the welding torch 26 abuts against the trumpet-shaped through hole 11 of the receiving member 10 to press down the movable member 6. When the sensor 19 detects that the distance between the base 1 and the movable part 6 has become equal to or smaller than a certain value, it outputs a signal. In response to this output signal, the mist-like spatter adhesion prevention liquid is sprayed from a mist-like spatter adhesion prevention liquid supply device (not shown). A mist-like sputter adhesion prevention liquid is supplied through a tube connected to connector 20 of movable member 6, passes from hook-shaped through hole 8 to the bottom surface of receiving member 10, along the entire circumference between step portion 7d between large diameter portion 7a and medium diameter portion 7b of retaining hole 7 and the upper surface of large diameter portion 14 of discharge member 13, through notch portion 12a provided in foot portion 12 of receiving member 10, and between the outer periphery of protrusion 15 of discharge member 13 and the peripheral wall of trumpet-shaped through hole 11 of receiving member 10, and sprays the sputter adhesion prevention liquid upward from around protrusion 15 of discharge member 13 to apply the sputter adhesion prevention liquid to shield nozzle 27 and contact tip 28.

[0023] At this time, since the tip of the shield nozzle 27 abuts against the trumpet-shaped through hole 11 of the receiving member 10, the sprayed sputter adhesion prevention liquid does not scatter around, and excess sputter adhesion prevention liquid and air pass through the through hole 22 of the exhaust member 13 and are collected via a filter (not shown).

[0024] Thereafter, when welding torch 26 rises, movable member 6 is pushed up by the biasing force of compression coil spring 18, and returns to the state shown in FIG. 4A.

[0025] Next, a method for removing spatter adhering to the shield nozzle 27 and contact tip 28 using compressed air can be omitted since it is only necessary to replace the spatter adhering prevention liquid in the explanation of the method for applying the spatter adhering prevention liquid with compressed air. However, spatter adhering to the shield nozzle 27 and contact tip 28 is removed by the ejection force of the compressed air ejected through the gap between the outer periphery of the protrusion 15 of the discharge member 13 and the peripheral wall of the trumpet-shaped through hole 11 of the receiving member 10, and the compressed air from which the spatter has been removed is then released to the outside after having spatter removed by a filter not shown.

[0026] In addition, when the sensor 19 detects that the distance between the base 1 and the movable member 6 has reached a certain distance and outputs a signal, compressed air may first be supplied to remove the spatter, and then a mist of spatter adhesion prevention liquid may be supplied to apply the spatter adhesion prevention liquid.

[0027] The present invention is not limited to the above-described embodiment, and as shown in Figs. 5 and 6, a passage between the outer periphery of the protrusion 35 of the discharge member 33 and the peripheral wall of the trumpet-shaped through hole 31 of the receiving member 30 may be formed by providing a plurality of vertically inclined grooves 36 on the outer periphery of the discharge member 33, and a mist of anti-spatter adhesion liquid or compressed air may be sprayed in a tornado-like manner through the grooves 36.

[0028] As described above, according to the present invention, there is provided a base 1 having a through hole 2 formed in the vertical direction, a movable member 6 having a retaining hole 7 formed therein that penetrates in the vertical direction, a cylindrical drainage member 13 having an upper end inserted into the retaining hole 7 of the movable member 6 and fixed to the movable member 6 and a lower end inserted into the through hole 2 of the base, and a trumpet-shaped through hole 11 having a diameter that increases toward the top and is engaged and fixed to the retaining hole 7 of the movable member 6. Discharge Parts The device comprises a receiving member 10 with the upper end of 13 inserted from below into a trumpet-shaped through hole 11, a biasing mechanism for biasing the movable member 6 in a direction away from the base 1, and a sensor 19 for outputting an output when the distance between the base 1 and the movable member 6 becomes equal to or smaller than a certain value. The peripheral wall of the trumpet-shaped through hole 11 of the receiving member 10 is pressed by the tip of a shield nozzle 27 of a welding torch 26, and when the distance between the base 1 and the movable member 6 becomes equal to or smaller than a certain value, the sensor 19 outputs an output, and the ejection material supplied to the movable member 6 is ejected through the gap between the outer periphery of the discharge member 13 and the peripheral wall of the trumpet-shaped through hole 11 of the receiving member 10 and is discharged to the outside through the through hole 22 of the discharge member 13. Since all the ejection material is ejected into the shield nozzle 27, the ejection device can be made small, and there is no risk of soiling the surroundings even when the spatter adhesion prevention liquid is ejected. Furthermore, when compressed air is ejected to remove spatter, the force of removing spatter can be strengthened by ejecting all the compressed air into the shield nozzle 27. 。

[0029] In addition, a plurality of vertically inclined grooves 36 are provided on the outer periphery of the discharge member 33, and the ejected material is ejected through the grooves 36. This allows the spatter adhesion prevention liquid to be applied evenly, and also allows the spatter to be removed uniformly. 。 [Explanation of symbols]

[0030] 1 Base 2 Through holes 3 Insertion hole 6 Movable parts 7 Retention hole 8 Through holes 10 Receiving member 11 Through hole 13 Discharge member 14 Large diameter section 15 Protrusions 16 Volts 22 Through hole 26 Welding Torch 27 Shield Nozzle 28 Contact Tip 30 Receiving member 31 Through hole 33 Discharge parts 35 Protrusion 36 Groove

Claims

1. a base having a through hole formed in the vertical direction, a movable member having a holding hole formed therethrough in the vertical direction, and an upper end of the movable member is fixed to the movable member by being inserted into the holding hole of the movable member; a cylindrical discharge member having a lower end inserted into a through hole of the base; a receiving member having a trumpet-shaped through hole which increases in diameter upward, the receiving member being engaged and fixed to the retaining hole of the movable member, the upper end of the discharge member being inserted into the trumpet-shaped through hole from below; The device is comprised of a biasing mechanism that biases the movable member in a direction away from the base, and a sensor that outputs an output when the distance between the base and the movable member becomes equal to or smaller than a certain value, and the peripheral wall of the trumpet-shaped through hole of the receiving member is pressed by the tip of the shield nozzle of the welding torch, and the sensor outputs an output when the distance between the base and the movable member becomes equal to or smaller than a certain value, A spraying device characterized in that the spray material supplied to the movable member is sprayed through a gap between the outer periphery of the discharge member and the peripheral wall of a trumpet-shaped through hole in the receiving member, and is discharged to the outside through the through hole in the discharge member.

2. 2. The ejection device according to claim 1, wherein a plurality of grooves inclined in the vertical direction are provided on the outer peripheral surface of said ejection member, and the ejection material is ejected through said grooves.

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