Cleaning gun

Abstract

To provide a washing gun that is attached to a machining device to clean the machining device and a workpiece, the washing gun being designed to be able to jet each of a gas, a liquid, and a mixed fluid and be able to adjust an amount that each jets.SOLUTION: A washing gun 1 comprises: a washing gun body 10 including a gas supply passage 14 connected to a gas supply source 18, a liquid supply passage 15 connected to a liquid supply source 19, and a jet passage 16 connected to a jet port 13 for jetting a fluid composed of gas or liquid, or a mixed fluid of the gas and the liquid, the washing gun body including a grip portion 12; and an adjustment unit 20 that jets the fluid from the jet port 13 and adjusts a flow rate of the fluid. The washing gun body 10 has a switch mechanism 30 configured to selectively connect the jet passage 16 and the gas supply passage 14 or liquid supply passage 15, or the gas supply passage 14 and the liquid supply passage 15; and jets the fluid after adjusting by means of the adjustment unit 20 the flow rate of the fluid selected by the switch mechanism 30.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a cleaning gun that is attached to a processing apparatus and cleans the processing apparatus and a workpiece.

Background Art

[0002] Various types of processing apparatuses such as cutting apparatuses and grinding apparatuses can be broadly classified into so-called full-auto types equipped with a transport unit and a cleaning unit, and so-called manual types that are not equipped with a transport unit or a cleaning unit and are provided with only a processing unit. Normally, in a manual-type processing apparatus, an operator carries a workpiece into the processing unit, performs predetermined processing with the processing unit, and then carries the workpiece out of the processing unit. Since a manual-type processing apparatus is generally not provided with a cleaning unit, the processed workpiece is transported by the operator to a separate cleaning apparatus, and processing debris adhering to the workpiece due to processing is cleaned away.

[0003] However, a considerable amount of time may elapse before the operator carries out the processed workpiece from the processing apparatus and transports it to a separately provided cleaning apparatus, and the workpiece may dry out. There is a problem that once the processing debris adhering to the workpiece dries, it is difficult to remove even if the workpiece is cleaned afterwards. Therefore, a simple cleaning gun that can be attached to a manual-type processing apparatus and enables the workpiece to be cleaned immediately after being carried out of the processing apparatus after processing has been provided (for example, see Patent Document 1).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of Invention

Problem to be Solved by the Invention

[0005] In Patent Document 1, when the first on / off switch means is activated, liquid is ejected from the nozzle; when the second on / off switch means is activated, gas is ejected from the nozzle; and when both the first and second on / off switch means are activated, a mixed fluid consisting of liquid and gas is ejected. This cleaning gun allowed for the quick and easy cleaning of workpieces processed by a manual type processing device with liquid or mixed fluid immediately after processing, followed by drying of the workpieces by ejecting gas. However, since the flow rates of the liquid, gas, and mixed fluid could not be adjusted in this cleaning gun, there were problems such as insufficient cleaning of the workpiece if the liquid flow rate was low, and splashing of liquid around the processing device after being ejected onto the workpiece if the liquid flow rate was high.

[0006] The present invention has been made in view of the above problems, and its objective is to provide a cleaning gun that is attached to a processing device to clean the processing device and the workpiece, which can eject gas, liquid, and mixed fluid, and can adjust the amount of each ejected. [Means for solving the problem]

[0007] To solve the above-mentioned problems and achieve the objective, the present invention provides a cleaning gun attached to a processing apparatus for cleaning the processing apparatus and the workpiece, comprising: a gas supply passage connected to a gas supply source for supplying gas; a liquid supply passage connected to a liquid supply source for supplying liquid; and a discharge passage connected to a nozzle for ejecting a fluid consisting of the gas, the liquid, or a mixture of the gas and the liquid, and comprising a cleaning gun body with a gripping portion, and an adjustment portion for ejecting the fluid from the nozzle and adjusting the flow rate of the fluid, wherein the cleaning gun body is By moving along a predetermined direction of movement, Selectively connect the ejection passage to the gas supply passage or the liquid supply passage or the gas supply passage and the liquid supply passage. Select the switching connection part It has a switch mechanism, The switching connection is biased by a biasing unit to the central position within the movement range of the switching connection, and when it is in the central position, it connects the ejection passage and the gas supply passage to supply the gas to the ejection passage, moves a predetermined amount in one direction along the direction of movement relative to the central position to connect the ejection passage and the liquid supply passage to supply the liquid to the ejection passage, and moves a predetermined amount in the other direction along the direction of movement relative to the central position to connect the ejection passage, the gas supply passage and the liquid supply passage to supply the mixed fluid to the ejection passage. The fluid flow rate selected by the switch mechanism is adjusted by the adjustment unit and then ejected.

[0008] The adjustment unit may be a trigger that is rotatably mounted to the cleaning gun body. The trigger of the adjustment unit is subjected to force in a direction approaching the gripping unit, and the direction of movement of the switching coupling unit may be in a direction along the direction in which the gripping unit extends. [Effects of the Invention]

[0009] The present invention allows for the selection of the type of fluid ejected from the nozzle from gas, liquid, or mixed fluid by selectively connecting the ejection passage to a gas supply passage, a liquid supply passage, or both a gas supply passage and a liquid supply passage using a switch mechanism. Furthermore, the adjustment unit allows for the adjustment of whether or not to eject fluid from the nozzle and the amount of fluid ejected from the nozzle. Therefore, in a cleaning gun attached to a processing device for cleaning the processing device and workpiece, it is possible to eject gas, liquid, and mixed fluid, and the amount of each ejected can be adjusted. [Brief explanation of the drawing]

[0010] [Figure 1] Figure 1 is a schematic side view showing the external appearance of the cleaning gun according to the embodiment. [Figure 2] Figure 2 is a partial cross-sectional view showing an example of the configuration of the cleaning gun shown in Figure 1. [Figure 3] Figure 3 is a cross-sectional view showing the switching connection section of the cleaning gun shown in Figure 1. [Figure 4] Figure 4 is a cross-sectional view showing the switching connection section of the cleaning gun shown in Figure 1. [Figure 5] Figure 5 is a cross-sectional view showing the switching connection section of the cleaning gun shown in Figure 1. [Figure 6] Figure 6 illustrates a first example of the operation process of the cleaning gun shown in Figure 1. [Figure 7] Figure 7 illustrates a second example of the operation process of the cleaning gun shown in Figure 1. [Figure 8] Figure 8 illustrates a third example of the operation process of the cleaning gun shown in Figure 1. [Modes for carrying out the invention]

[0011] Embodiments for carrying out the present invention will be described in detail with reference to the drawings. The present invention is not limited to the contents described in the following embodiments. Furthermore, the components described below include those that can be easily imagined by those skilled in the art, and those that are substantially the same. In addition, the components described below can be combined as appropriate. Furthermore, various omissions, substitutions, or modifications of the components can be made without departing from the spirit of the present invention.

[0012] [Embodiment] A cleaning gun 1 according to an embodiment of the present invention will be described based on the drawings. Figure 1 is a schematic side view showing the external appearance of the cleaning gun 1 according to the embodiment. Figure 2 is a partial cross-sectional view showing an example of the configuration of the cleaning gun 1 in Figure 1. The cleaning gun 1 according to the embodiment is a device attached to a processing device for cleaning the processing device and the workpiece, and as shown in Figure 1, comprises a cleaning gun body 10 and an adjustment unit 20.

[0013] As shown in Figures 1 and 2, the cleaning gun body 10 comprises a main body portion 11 and a grip portion 12. The main body portion 11 is the part corresponding to the barrel portion of the cleaning gun body 10 and is formed to extend in one direction. The main body portion 11 has a nozzle 13 at its tip, which corresponds to the muzzle of the cleaning gun body 10 and ejects fluid, and a grip portion 12 at its base end for the operator using the cleaning gun 1 to grip. The cleaning gun body 10 is formed integrally with the main body portion 11 and the grip portion 12. Here, the fluid ejected from the nozzle 13 of the main body portion 11 of the cleaning gun body 10 consists of a gas 41 (see Figures 3 and 6), a liquid 42 (see Figures 4 and 7), or a mixed fluid 43 of gas 41 and liquid 42 (see Figures 5 and 8).

[0014] As shown in Figure 2, the cleaning gun main body 10 has a gas supply passage 14, a liquid supply passage 15, and an ejection passage 16. The gas supply passage 14 is provided inside the grip portion 12 of the cleaning gun main body 10, one end 14-1 is connected and communicated with a gas supply source 18 that supplies gas 41, and the other end 14-2 is connected to the other side of the switching connection portion 31 of the switch mechanism 30. The liquid supply passage 15 is provided inside the grip portion 12 of the cleaning gun main body 10, one end 15-1 is connected and communicated with a liquid supply source 19 that supplies liquid 42, and the other end 15-2 is connected to the other side of the switching connection portion 31 of the switch mechanism 30. The ejection passage 16 is provided extending from the inside of the main body portion 11 of the cleaning gun main body 10 to the inside of the grip portion 12, one end 16-1 communicates with the ejection port 13 of the cleaning gun main body 10, and the other end 16-2 is connected to one side of the switching connection portion 31 of the switch mechanism 30.

[0015] The gas supply passage 14 is provided with a check valve 14-3. In the gas supply passage 14, the check valve 14-3 allows fluid to flow from the one end 14-1 side toward the other end 14-2 side, and prevents backflow of fluid flowing from the other end 14-2 side toward the one end 14-1 side. The liquid supply passage 15 is provided with a check valve 15-3. In the liquid supply passage 15, the check valve 15-3 allows fluid to flow from the one end 15-1 side toward the other end 15-2 side, and prevents backflow of fluid flowing from the other end 15-2 side toward the one end 15-1 side. Therefore, particularly when connecting the ejection passage 16 to the gas supply passage 14 and the liquid supply passage 15, the check valve 14-3 can prevent the liquid 42 supplied from the liquid supply passage 15 from flowing back through the gas supply passage 14, and the check valve 15-3 can prevent the gas 41 supplied from the gas supply passage 14 from flowing back through the liquid supply passage 15. Although the check valve 14-3 and the check valve 15-3 are depicted outside the cleaning gun main body 10 in Figure 2, Figure 6, Figure 7 and Figure 8, the present invention is not limited to this, and they may be provided inside the cleaning gun main body 10 or outside the cleaning gun main body 10.

[0016] The other end 14-2 of the gas supply passage 14 and the other end 15-2 of the liquid supply passage 15, both connected to the other side of the switching connection portion 31, are arranged along the moving direction of the switching connection portion 31 of the switch mechanism 30 described later. A predetermined interval 51 is provided between the other end 14-2 of the gas supply passage 14 and the other end 15-2 of the liquid supply passage 15 along the moving direction of the switching connection portion 31 of the switch mechanism 30.

[0017] The gas supply source 18 and the liquid supply source 19 are provided outside the cleaning gun main body 10, and are connected to one end 14-1 of the gas supply passage 14 and one end 15-1 of the liquid supply passage 15, respectively. As the gas supply source 18 and the liquid supply source 19, for example, those used in a processing apparatus to which the cleaning gun 1 is attached can be used. In the present embodiment, the gas 41 supplied by the gas supply source 18 is, for example, pressurized air or the like. In the present embodiment, the liquid 42 supplied by the liquid supply source 19 is, for example, pure water or the like.

[0018] As shown in FIG. 1 and FIG. 2, the cleaning gun main body 10 has a switch mechanism 30. The switch mechanism 30 includes a switching connection portion 31, a switch 32, and a biasing portion 33. As shown in FIG. 2, the switching connection portion 31 is provided inside the grip portion 12 of the cleaning gun main body 10.

[0019] As shown in FIG. 1, the switch 32 is provided on the outer periphery of the grip portion 12 of the cleaning gun main body 10, and is operated by an operator to move the switching connection portion 31 in a predetermined moving direction within a predetermined moving range. In the present embodiment, as shown in FIG. 1 and FIG. 2, the predetermined moving direction of the switching connection portion 31 is a direction substantially orthogonal to the extending direction of the main body portion 11, a direction substantially along the extending direction of the grip portion 12, and the vertical direction on the paper surface of FIG. 1 and FIG. 2. In the following description of this specification, among the predetermined moving directions of the switching connection portion 31, the direction approaching the main body portion 11 is referred to as the upward direction, and the direction moving away from the main body portion 11 is referred to as the downward direction.

[0020] The biasing unit 33 is located inside the gripping unit 12 of the cleaning gun body 10 and biases the switching coupling unit 31 to the central position, which is the center within a predetermined range of movement. In this embodiment, the biasing unit 33 is a pair of springs located at both ends of the switching coupling unit 31 in the direction of movement, and functions as a spring return that returns the switching coupling unit 31 to the central position within the predetermined range of movement when the operator releases the operation of the switch 32. By operating the switch 32, the cleaning gun 1 can move the switching coupling unit 31 upward or downward by a maximum amount of movement 52 (see Figure 1) of 0.5 times (half) of a predetermined interval 51, relative to the central position biased by the biasing unit 33, along a predetermined direction of movement. Furthermore, when the operator releases the operation of the switch 32, the switching coupling unit 31 automatically returns to the central position biased by the biasing unit 33.

[0021] Figures 3, 4, and 5 are cross-sectional views showing the switching connection section 31 of the cleaning gun 1 in Figure 1. As shown in Figures 3, 4, and 5, the switching connection section 31 is arranged along the direction of movement of the switching connection section 31 on one side to which the other end 16-2 of the ejection passage 16 is connected, and three flow path connection sections 34, 35, and 36 are formed in order from the side closer to the main body 11 (the upper side of the paper in Figures 3, 4, and 5). As shown in Figures 3, 4, and 5, the switching connection section 31 is arranged along the direction of movement of the switching connection section 31 on the other side to which the other end 14-2 of the gas supply passage 14 and the other end 15-2 of the liquid supply passage 15 are connected, and three flow path connection sections 37, 38, and 39 are formed in order from the side closer to the main body 11. As shown in Figures 3, 4, and 5, all six flow path connection points 34, 35, 36, 37, 38, and 39 of the switching connection section 31 are connected to each other in the central part between one side and the other side of the switching connection section 31.

[0022] As shown in Figures 3, 4, and 5, the three flow path connection sections 34, 35, and 36 formed on one side are arranged at equal intervals 53 along the direction of movement of the switching connection section 31, with an interval 53 equal to the amount of movement 52 and 0.5 times the interval 51. That is, an interval 53 is provided between the flow path connection section 34 and the flow path connection section 35, and between the flow path connection section 35 and the flow path connection section 36, respectively, along the direction of movement of the switching connection section 31.

[0023] The three flow path connection sections 37, 38, and 39 formed on the other side are arranged along the direction of movement of the switching connection section 31, as shown in Figures 3, 4, and 5. Between flow path connection section 37 and flow path connection section 38, a gap 54 is provided that is equal to the gap 51 and twice the amount of movement 52 and the gap 53, along the direction of movement of the switching connection section 31. Between flow path connection section 38 and flow path connection section 39, a gap 55 is provided that is 0.5 times the gap 51 and equal to the amount of movement 52 and the gap 53, along the direction of movement of the switching connection section 31.

[0024] When the operator releases the operation of switch 32, the switch mechanism 30 connects the other end 16-2 of the ejection passage 16 to the flow path connection part 35, and connects the other end 14-2 of the gas supply passage 14 to the flow path connection part 39, as shown in Figure 3, thereby connecting the ejection passage 16 and the gas supply passage 14. When the operator moves switch 32 upward by a movement amount 52, causing the switching connection part 31 to move upward by a movement amount 52, the switch mechanism 30 connects the other end 16-2 of the ejection passage 16 to the flow path connection part 36, and connects the other end 15-2 of the liquid supply passage 15 to the flow path connection part 38, as shown in Figure 4, thereby connecting the ejection passage 16 and the liquid supply passage 15.

[0025] When an operator moves the switch 32 downward by a movement amount of 52, the switch mechanism 30 connects the other end 16-2 of the ejection passage 16 to the flow path connection part 34, connects the other end 14-2 of the gas supply passage 14 to the flow path connection part 38, and also connects the other end 15-2 of the liquid supply passage 15 to the flow path connection part 37, thereby connecting the ejection passage 16 to the gas supply passage 14 and the liquid supply passage 15, as shown in Figure 5.

[0026] The switch mechanism 30 allows for selective connection between the ejection passage 16 and either the gas supply passage 14, the liquid supply passage 15, or both, by operating the switch 32 to change the position of the switching connection section 31. The switching connection section 31 of the switch mechanism 30 is structured to seal the other end 14-2 of the gas supply passage 14 and the other end 15-2 of the liquid supply passage 15 if the position of the switching connection section 31 does not match any of the three flow path connection sections 34, 35, and 36 in the direction of movement. Similarly, the other end 16-2 of the ejection passage 16 is sealed if the position of the switching connection section 31 does not match any of the three flow path connection sections 37, 38, and 39 in the direction of movement. Therefore, if the operator operates the switch 32 by a movement less than the specified amount of movement 52, the switch mechanism 30 will not connect the ejection passage 16 to the gas supply passage 14 or the liquid supply passage 15, or to both the gas supply passage 14 and the liquid supply passage 15, and will instead seal the gas supply passage 14, the liquid supply passage 15, and the ejection passage 16.

[0027] As shown in Figures 1 and 2, the adjustment unit 20 includes a guide hole 21, a slide bar 22, a biasing unit 23, a trigger 24, and a pivot shaft 25. The guide hole 21 is formed in a cylindrical shape inside the gripping unit 12 of the cleaning gun body 10, along the direction in which the main body 11 extends, so as to cross the spray passage 16. The slide bar 22 is formed in a rod shape and is inserted into the guide hole 21 without any gaps, and is slidably provided in an insertion direction to insert further into the guide hole 21 and in an extraction direction to pull out from the guide hole 21. One end 22-1 of the slide bar 22 is provided in contact with the biasing unit 23 inside the guide hole 21 and is biased in the extraction direction by the biasing unit 23, and the other end 22-2 is provided protruding from the guide hole 21 and in contact with the central part 24-2 of the trigger 24, so that the trigger 24 can apply force in the insertion direction to resist the biasing force of the biasing unit 23.

[0028] The slide bar 22 is positioned in the withdrawal direction relative to the ejection passage 16 when no force is applied in the insertion direction by the trigger 24, and has a through hole 26 that penetrates along the ejection passage 16 and is wider than the ejection passage 16, at a position that allows it to communicate with the ejection passage 16 when a force is applied in the insertion direction by the trigger 24 and it is inserted further deeper into the guide hole 21. When the slide bar 22 is positioned at the position shown in Figure 2 when no force is applied in the insertion direction by the trigger 24, the slide bar 22 does not communicate with the ejection passage 16 until the insertion depth from the reference position reaches the first length 61, so the flow rate of fluid that the ejection passage 16 can flow through the through hole 26 is 0. When the insertion depth of the slide bar 22 reaches the first length 61, the through hole 26 begins to communicate with the ejection passage 16, so the flow rate of fluid that the ejection passage 16 can flow through the through hole 26 becomes greater than 0. As the insertion depth of the slide bar 22 increases, the opening area of ​​the ejection passage 16 opened by the through hole 26 increases, which increases as the insertion depth increases until the insertion depth reaches the second length 62, which is longer than the first length 61 by the inner diameter of the ejection passage 16. This increases the flow rate of fluid that the ejection passage 16 can carry through the through hole 26. When the insertion depth of the slide bar 22 is the second length 62 or greater, the flow rate of fluid that the ejection passage 16 can carry through the through hole 26 is maximized. Here, the flow rate of fluid that the ejection passage 16 can carry through the through hole 26 can be expressed, for example, as the volume of fluid that can be carried per predetermined unit time.

[0029] The biasing portion 23 is provided at the bottom of the guide hole 21, in contact with one end 22-1 of the slide bar 22, and biases the other end 22-2 of the slide bar 22 to a reference position where it protrudes from the guide hole 21 and contacts the central portion 24-2 of the trigger 24 to which no force is applied. In this embodiment, the biasing portion 23 is, for example, a spring.

[0030] The trigger 24 is formed to extend in approximately one direction, and this direction is generally oriented in the direction in which the grip portion 12 extends. The pivot shaft 25 is provided at one end 24-1 of the trigger 24, along a direction perpendicular to the direction in which the main body portion 11 of the cleaning gun body 10 extends and the direction in which the grip portion 12 extends. The trigger 24 is mounted by the pivot shaft 25 to the cleaning gun body 10 so as to be rotatable around the pivot shaft 25 at a position on the side of the main body portion 11 of the cleaning gun body 10 opposite to the side on which the grip portion 12 is provided.

[0031] The trigger 24 is positioned so that its central portion 24-2 contacts the other end 22-2 of the slide bar 22. The other end 24-3, which is closer to the gripping portion 12, is operated by the operator gripping the gripping portion 12, applying a force in the direction of approaching the gripping portion 12. When the operator operates the trigger 24 and a force is applied to the other end 24-3 in the direction of approaching the gripping portion 12, the trigger 24 rotates around the pivot axis 25. This causes the central portion 24-2 to apply a force in the insertion direction to the other end 22-2 of the slide bar 22, thereby pushing the slide bar 22 in the insertion direction. When the operator releases the operation of the trigger 24, the slide bar 22 automatically returns to the reference position biased by the biasing portion 23.

[0032] The adjustment unit 20 adjusts the insertion depth of the slide bar 22 by adjusting the force applied to the other end 24-3 of the trigger 24 when the operator operates the trigger 24, thereby adjusting the flow rate of fluid that can be discharged through the through hole 26 by the discharge passage 16. The adjustment unit 20 can then adjust whether or not to discharge fluid from the nozzle 13, and the amount of fluid discharged from the nozzle 13.

[0033] An example of the operation process of the cleaning gun 1 according to the embodiment having the above configuration will be described. Figure 6 is a diagram illustrating the first example of the operation process of the cleaning gun 1 in Figure 1. Figure 7 is a diagram illustrating the second example of the operation process of the cleaning gun 1 in Figure 1. Figure 8 is a diagram illustrating the third example of the operation process of the cleaning gun 1 in Figure 1.

[0034] The first example shown in Figure 6 is one in which the operator has released the switch 32 and deeply operated the trigger 24. In the first example, since the operator has released the switch 32, the switching connector 31 is positioned in the central position as shown in Figures 3 and 6. As a result, the ejection passage 16 and the gas supply passage 14 are connected by the switch mechanism 30, and the gas 41 supplied from the gas supply source 18 is supplied to the ejection passage 16 through the gas supply passage 14 and the switching connector 31. Also, in the first example, as shown in Figure 6, the operator has deeply operated the trigger 24, so the slide bar 22 is inserted deeply, and the flow rate of fluid that can flow through the through-hole 26 in the ejection passage 16 is maximized. As a result, in the first example, as shown in Figure 6, the cleaning gun 1 ejects the gas 41 supplied from the gas supply source 18 through the gas supply passage 14, the switching connector 31 and the ejection passage 16 from the nozzle 13.

[0035] The second example shown in Figure 7 is one in which the operator moves the switch 32 upward by a displacement of 52 and also operates the trigger 24 deeply. In the second example, since the operator moves the switch 32 upward by a displacement of 52, as shown in Figures 4 and 7, the switching coupling 31 is positioned 52 units above the center position. As a result, the switch mechanism 30 connects the ejection passage 16 and the liquid supply passage 15, and the liquid 42 supplied from the liquid supply source 19 is supplied to the ejection passage 16 through the liquid supply passage 15 and the switching coupling 31. Also, in the second example, as shown in Figure 7, since the operator operates the trigger 24 deeply, the slide bar 22 is inserted deeply, and the flow rate of fluid that can flow through the through-hole 26 in the ejection passage 16 is maximized. Consequently, in the second example, as shown in Figure 7, the cleaning gun 1 ejects the liquid 42 supplied from the liquid supply source 19 through the liquid supply passage 15, the switching coupling 31, and the ejection passage 16 from the nozzle 13.

[0036] The third example shown in Figure 8 is one in which the operator moves the switch 32 downward by a displacement of 52 and also operates the trigger 24 deeply. In the third example, since the operator moves the switch 32 downward by a displacement of 52, as shown in Figures 5 and 8, the switching coupling 31 is positioned 52 units lower than the central position, and the switch mechanism 30 connects the ejection passage 16 with the gas supply passage 14 and the liquid supply passage 15. Therefore, in the third example, the gas 41 supplied from the gas supply source 18 through the gas supply passage 14 and the liquid 42 supplied from the liquid supply source 19 through the liquid supply passage 15 are mixed in the switching coupling 31 to form a mixed fluid 43, which is then supplied to the ejection passage 16. Also, in the third example, as shown in Figure 8, since the operator operates the trigger 24 deeply, the slide bar 22 is inserted deeply, and the flow rate of the fluid that can flow through the through-hole 26 in the ejection passage 16 is maximized. As a result, in the third example, the cleaning gun 1 ejects a mixed fluid 43 of gas 41 and liquid 42 through the ejection passage 16 and out of the nozzle 13, as shown in Figure 8.

[0037] The cleaning gun 1 according to the embodiment having the above configuration allows the type of fluid ejected from the nozzle 13 to be selected from gas 41, liquid 42, or mixed fluid 43 by selectively connecting the ejection passage 16 to the gas supply passage 14 or the liquid supply passage 15 or the gas supply passage 14 and the liquid supply passage 15 using the switch mechanism 30, and furthermore, the adjustment unit 20 allows adjustment of whether or not to eject fluid from the nozzle 13 and the amount of fluid ejected from the nozzle 13. For this reason, the cleaning gun 1 according to the embodiment, which is attached to a processing device to clean the processing device and the workpiece, has the effect of being able to eject gas 41, liquid 42, and mixed fluid 43, and adjusting the amount of each ejected.

[0038] Furthermore, in the cleaning gun 1 according to this embodiment, the adjustment unit 20 is a trigger 24 that is rotatably attached to the cleaning gun body 10, so that the operator can intuitively adjust the amount of fluid ejected from the nozzle 13 by how much the trigger 24 is pulled.

[0039] Furthermore, in the cleaning gun 1 according to this embodiment, the biasing unit 33 in the switch mechanism 30 biases the switching connection unit 31 to connect the ejection passage 16 and the gas supply passage 14, thereby biasing the gas 41 supplied from the gas supply source 18 to the ejection passage 16. As a result, the cleaning gun 1 according to this embodiment can suppress the risk of liquid 42 or mixed fluid 43 leaking into the switching connection unit 31 or being ejected from the nozzle 13 due to operator error or the like.

[0040] [Variation] A modified cleaning gun 1 according to an embodiment of the present invention will now be described. The modified cleaning gun 1 is a modified version of the embodiment in which the switch mechanism 30 is changed, but the other configurations are the same as in the embodiment. The switch mechanism 30 of the modified cleaning gun 1 is provided with a positioning mechanism that replaces the biasing part 33 to position the switch 32 at the central position and at positions operated upward and downward by a movement amount 52 from the central position. This positioning mechanism is, for example, a recessed structure into which the switch 32 fits at each position to be positioned.

[0041] In the modified cleaning gun 1, the switch mechanism 30, by positioning the switch 32, can be positioned at the central position and at positions operated upward and downward by a movement of 52 from the central position, thereby allowing the switching coupling section 31 to be positioned at the central position and at positions operated upward and downward by a movement of 52 from the central position. Therefore, in the modified cleaning gun 1, by positioning the switching coupling section 31, by the positioning mechanism of the switch mechanism 30, can be positioned at positions that reliably connect the discharge passage 16 with the gas supply passage 14 or the liquid supply passage 15 or both the gas supply passage 14 and the liquid supply passage 15, respectively, allowing the operator to select the type of fluid to be discharged appropriately and to stably discharge the selected fluid from the nozzle 13.

[0042] It should be noted that the present invention is not limited to the embodiments described above. That is, it can be implemented with various modifications without departing from the core principles of the present invention. [Explanation of Symbols]

[0043] 1. Cleaning gun 10 Cleaning gun body 12 Gripping part 13 spout 14. Gas supply path 15 Liquid supply path 16 Spout channel 18. Gas supply source 19 Fluid source 20 Adjustment part 24 Trigger 30 Switch mechanism 31 Switching connection section 41 Gases 42 liquid 43 Mixed fluid

Claims

1. A cleaning gun attached to a processing device for cleaning the processing device and the workpiece, A cleaning gun body having a gripping section, having a gas supply passage connected to a gas supply source for supplying gas, a liquid supply passage connected to a liquid supply source for supplying liquid, and a discharge passage connected to a nozzle for ejecting a fluid consisting of the gas, the liquid, or a mixture of the gas and the liquid, It comprises an adjustment unit that ejects the fluid from the nozzle and adjusts the flow rate of the fluid, The cleaning gun body has a switch mechanism that, by moving along a predetermined direction of movement, selectively connects the ejection passage with the gas supply passage, the liquid supply passage, or both the gas supply passage and the liquid supply passage. The switching connection is biased by a biasing unit to the central position within the movement range of the switching connection, and when it is in the central position, it connects the ejection passage and the gas supply passage to supply the gas to the ejection passage, moves a predetermined amount in one direction along the direction of movement relative to the central position to connect the ejection passage and the liquid supply passage to supply the liquid to the ejection passage, and moves a predetermined amount in the other direction along the direction of movement relative to the central position to connect the ejection passage, the gas supply passage and the liquid supply passage to supply the mixed fluid to the ejection passage. A cleaning gun characterized by adjusting the flow rate of the fluid selected by the switch mechanism using the adjustment unit and then ejecting it.

2. The cleaning gun according to claim 1, characterized in that the adjustment part is a trigger rotatably attached to the cleaning gun body.

3. The trigger of the adjustment unit is subjected to force in a direction approaching the gripping unit, The cleaning gun according to claim 2, characterized in that the direction of movement of the switching connecting portion is in the direction along which the gripping portion extends.

Images