Cleaning machine

Abstract

The invention provides a cleaning machine capable of inserting a nozzle into a space inside a cleaning object with a simple structure. A cleaning machine (10) is provided with: a table (37) capable of rotating about a table shaft (1) extending in the vertical direction; a feeding table (23) extending in the front-back direction and capable of moving only in the up-down direction and the front-back direction; a nozzle head (25) disposed on the feeding table (23); and a nozzle (33) that has a spout (33c) facing a direction different from that of the table shaft (1), is disposed on the nozzle head (25), and is rotatable about a nozzle shaft (2) extending in the vertical direction.

Description

Technical Field

[0001] The invention relates to a cleaning machine. Background Art

[0002] A cleaning machine scheme is proposed, which comprises: a hollow worktable rotating shaft rotating about a first axis; a worktable fixed on the worktable rotating shaft and capable of setting a cleaning object; and a nozzle rotating about a second axis parallel to the first axis and spraying a cleaning fluid in a direction different from the second axis (Japanese Patent Gazette No. 2021-191572, hereinafter referred to as Patent Document 1).

[0003] In the cleaning machine of Patent Document 1, when there is a space such as a hole inside the object to be cleaned, the nozzle cannot be inserted into the space. Summary of the invention

[0004] An object of the present invention is to provide a cleaning machine with a simple structure and capable of inserting a nozzle into a space inside an object to be cleaned.

[0005] A first aspect of the present invention is a cleaning machine comprising:

[0006] A workbench, wherein the workbench can rotate around a workbench axis extending in the up-down direction;

[0007] A feeding table extending in the front-to-back direction and capable of moving only in the up-down direction and the front-to-back direction;

[0008] a nozzle head, the nozzle head being disposed on the feed stage; and

[0009] The nozzle has a nozzle opening facing in a direction different from the table axis, is disposed in the nozzle head, and is rotatable around a nozzle axis extending in the up-down direction.

[0010] The nozzle moves on a feed plane extending in the up-down and forward-backward directions through the table axis. The nozzle axis passes through the feed plane.

[0011] The cleaning machine may include a moving device that is disposed on the stand and moves the feed table in the up-down direction and the front-rear direction.

[0012] When the moving device moves the feed stage toward the lower end, the nozzle head is located below the upper end of the cleaning chamber body.

[0013] The moving device may also include: a Y guide, which is arranged on the stage; a moving column, which is arranged on the Y guide and guided by the Y guide; and a Z guide, which is arranged on the moving column. The moving device may also include: a Y feed device, which is arranged on the stage and moves the moving column; and a Z feed device, which is arranged on the moving column and moves the feed table. The moving column moves in the front-back direction. The feed table is arranged on the Z guide and guided by the Z guide. The feed table moves in the up-down direction.

[0014] The back opening is arranged on the cleaning chamber body. The telescopic cover can also cover the back opening above the feed table.

[0015] The upper cover can be detachably arranged on the cleaning chamber body. In addition, the upper cover can also be a telescopic cover covering the space between the nozzle head and the upper opening.

[0016] The cleaning fluid source can be arranged outside the cleaning machine. The cleaning fluid source is, for example, a liquid pump. The cleaning fluid is mainly liquid. For example, the cleaning fluid is water or an aqueous cleaning liquid.

[0017] According to the cleaning machine of the present invention, the nozzle can be inserted into the internal space of the object to be cleaned with a simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of the cleaning machine of Embodiment 1.

[0019] Figure 2 It is a top view of the cleaning machine of Embodiment 1.

[0020] Figure 3 This is a perspective view of the cleaning machine according to the first embodiment.

[0021] Figure 4 yes Figure 1 Enlarged view of part IV.

[0022] Figure 5 yes Figure 2 VV line profile.

[0023] Figure 6 This is a plan view showing a state in which the outer surface of a workpiece is cleaned by the cleaning machine according to the first embodiment.

[0024] Figure 7 This is a plan view showing a cleaning state of the inside of a workpiece by the cleaning machine according to the first embodiment.

[0025] Figure 8 It is a perspective view of the cleaning machine of Embodiment 2.

[0026] Explanation of symbols

[0027] 1 Table axis

[0028] 2 Nozzle axis

[0029] 10, 100 cleaning machine

[0030] 23 Feed table

[0031] 25 Nozzle Tip

[0032] 33 Nozzle

[0033] 33c Nozzle

[0034] 37 Workbench DETAILED DESCRIPTION

[0035] <Implementation Method 1>

[0036] like Figures 1 to 3 As shown, the cleaning machine 10 of this embodiment has a stand 11, a moving device 20, a feed table 23, a liquid pump (cleaning fluid source) 43, a cleaning chamber 39, a mechanical chamber 28, a telescopic cover 41, a nozzle head 25, a rotating shell 31, a spindle 32, a C-axis motor 27, a nozzle 33, an anti-straight impact plate 26, a workbench base 35 and a workbench 37.

[0037] Below, from the front ( Figure 1 The front-to-back direction is defined as the Y axis. The up-down direction is defined as the Z axis. The A axis is the rotation direction with the horizontally extending rotation axis 3 as the center. The C axis is the rotation direction with the vertically extending nozzle axis 2 as the center. The W axis is the rotation direction with the vertically extending table axis 1 as the center. The feed plane 4 (refer to Figure 2 ) is the YZ plane through the table axis 1. The nozzle axis 2 is located on the feed plane 4.

[0038] The moving device 20 is arranged on the stage 11. The stage 11 may have a tank (not shown). The tank stores a cleaning liquid (cleaning fluid). The moving device 20 has a Y guide (front and rear feed guide) 13, a moving column 17, a Y feed device (front and rear feed device) 15, a Z guide (up and down feed guide) 19, and a Z feed device (up and down feed device) 21.

[0039] The Y guide 13 is arranged at the rear of the gantry 11 and extends in the front-rear direction. The movable column 17 is arranged on the Y guide 13 so as to be movable in the front-rear direction. The movable column 17 is L-shaped when viewed from the front. The Z guide 19 extends in the up-down direction and is arranged on the movable column 17.

[0040] The Y feed device 15 is disposed on the stage 11. The Y feed device 15 is, for example, a ball screw servo motor mechanism. The Y feed device 15 moves the movable column 17 back and forth.

[0041] The liquid pump 43 may also be arranged outside the cleaning machine 10. The liquid pump 43 may also be connected to a tank (not shown). The liquid pump 43 pressurizes the cleaning liquid (cleaning fluid) and supplies it to the nozzle 33.

[0042] The cleaning chamber 39 includes a cleaning chamber body 39a and an upper cover 39b.

[0043] The cleaning chamber body 39a is fixed on the stand 11. The cleaning chamber body 39a has a back opening 39c and an upper opening 39d. The back opening 39c is located on the back of the cleaning chamber body 39a and extends in the up-down direction. The upper opening 39d is located on the upper surface of the cleaning chamber body 39a and extends in the front-back direction.

[0044] The upper cover 39b is detachably disposed on the cleaning chamber body 39a. The upper cover 39b covers the upper opening 39d. The upper cover 39b covers the nozzle 33 integrally with the cleaning chamber body 39a.

[0045] The machine room 28 is disposed on the stand 11 and covers the moving device 20. The machine room 28 may be connected to the cleaning chamber body 39a. The height of the machine room 28 is substantially the same as that of the cleaning chamber body 39a.

[0046] The feed stage 23 is arranged on the Z guide 19 and moves in the up-down direction. The cross section of the feed stage 23 is, for example, circular, rhombus, or rectangular. The feed stage 23 passes through the back opening 39c. The feed stage 23 has a feed stage flow path 23a. The feed stage flow path 23a passes through the feed stage 23 and the nozzle head 25. The feed stage flow path 23a is connected to the liquid pump 43.

[0047] The Z feed device 21 is disposed on the moving column 17. The Z feed device 21 is, for example, a ball screw servo motor mechanism. The Z feed device 21 moves the feed table 23 in the up-down direction.

[0048] The nozzle head 25 is L-shaped when viewed from the side. The nozzle head 25 has a column 25a and a beam 25b. The column 25a is arranged at the front end of the feed table 23. The column 25a extends upward from the feed table 23. The front surface of the column 25a may also be inclined backward as it moves downward. The beam 25b extends forward from the upper end of the column 25a.

[0049] The feed stage 23 and the nozzle head 25 move together. When the feed stage 23 is located at the bottom, the upper end of the nozzle head 25 is lower than the upper end of the cleaning chamber body 39a. When the feed stage 23 moves upward, the nozzle head 25 passes through the upper opening 39d.

[0050] The telescopic cover 41 is, for example, a bellows, a telescopic cover, or a roller cover. The telescopic cover 41 covers between the rear opening 39c and the feed table 23. The telescopic cover 41 is telescopic in the vertical direction.

[0051] The C-axis motor 27 is disposed inside the nozzle head 25. Figure 4 As shown, the C-axis motor 27 has an output shaft 27a and a key groove 27b. The output shaft 27a extends to the vicinity of the lower surface of the beam portion 25b along the nozzle axis 2. The key groove 27b is located at the lower end of the output shaft 27a.

[0052] The rotating housing 31 is disposed on the lower surface of the front end portion of the beam portion 25b. Figure 4 As shown, the rotating housing 31 has a main body 31a, an annular flow path 31b, a main bearing 31c and an upstream path 31d. The main body 31a extends along the nozzle axis 2. The main body 31a has a cylindrical inner surface 31e. The annular flow path 31b is a circumferential groove arranged on the inner surface 31e. The main bearing 31c is arranged at the upper and lower ends of the main body 31a. The upstream path 31d passes through the main body 31a. The upstream path 31d connects the feed station flow path 23a and the annular flow path 31b.

[0053] The main shaft 32 is cylindrical and supported by the main bearing 31c with the nozzle shaft 2 as the center. The main shaft 32 has a cylindrical portion 32b, a key 32a, a main shaft flow path 32c and a flange 32d. The cylindrical portion 32b slides with the inner surface 31e. The flange 32d is arranged at the lower end of the cylindrical portion 32b. The main shaft flow path 32c opens at the flange 32d and connects the annular flow path 31b and the nozzle flow path 33d. The key 32a is arranged at the upper end of the cylindrical portion 32b and meshes with the key groove 27b.

[0054] The nozzle 33 has a flange 33a, a shaft 33b, a nozzle 33c and a nozzle flow path 33d. The flange 33a is arranged at the upper end of the nozzle 33 and is tightly connected to the flange 32d. The shaft 33b extends downward from the flange 33a along the nozzle axis 2. The nozzle 33c is arranged at the front end of the shaft 33b. The height of the nozzle 33c is substantially the same as the height of the feed table 23. For example, the nozzle 33c ejects a jet 6 in a horizontal direction. The nozzle flow path 33d opens at the flange 33a and connects the spindle flow path 32c and the nozzle 33c.

[0055] like Figure 1 as well as Figure 3As shown, the anti-straight-hit plate 26 is arranged on the front surface of the column 25a. The anti-straight-hit plate 26 may have a folding portion 26b. The anti-straight-hit plate 26 extends up and down and left and right. The anti-straight-hit plate 26 may also be tilted backward as it moves downward. Preferably, the anti-straight-hit plate 26 extends further downward than the column 25a or the feed table 23. When viewed from the front, the folding portion 26b is arranged on the left and right of the anti-straight-hit plate 26. The folding portion 26b is folded toward the front. When the nozzle 33c is facing backward, the jet 6 ejected from the nozzle 33c collides with the anti-straight-hit plate 26. Preferably, the anti-straight-hit plate 26 is freely loadable and unloadable on the nozzle head 25.

[0056] like Figure 5 As shown, the cleaning machine 10 includes a W-axis motor 34. The W-axis motor 34 is disposed on the stand 11. The W-axis motor 34 is, for example, a servo motor.

[0057] The workbench seat 35 has a pair of ear shaft seats 35b and a rotating device 36. The workbench seat 35 is U-shaped when viewed from the front. When viewed from the front, the central part of the workbench seat 35 extends horizontally. When viewed from the front, the left and right ends of the workbench seat 35 extend upward from the central part. The workbench seat 35 is arranged on the frame 11 and rotates around the workbench shaft 1. The workbench seat 35 is connected to the W-axis motor 34. The ear shaft seats 35b are arranged at the upper ends of the left and right sides of the workbench seat 35 with the rotating shaft 3 as the center. The rotating device 36 is supported on the workbench seat 35. The rotating device 36 rotates integrally with the workbench seat 35 around the workbench shaft 1. The rotating device 36 is, for example, an air cylinder or a servo motor.

[0058] The workbench 37 has an ear shaft 37a. The workbench 37 is U-shaped when viewed from the front. When viewed from the front, the center of the workbench 37 extends horizontally. When viewed from the front, the left and right ends of the workbench 37 extend upward from the center. The ear shaft 37a is arranged at the upper left and right ends of the workbench 37. The ear shaft 37a is rotatably supported on the ear shaft seat 35b. The workbench 37 is connected to the rotating device 36. The workbench 37 can be rotated 90 degrees or 180 degrees, for example, around the rotating shaft 3.

[0059] The workpiece 5 is placed on the workbench 37. The workpiece 5 is, for example, an E-axle case, an inverter case, or a transaxle case.

[0060] like Figure 2 As shown, the table 37 rotates integrally with the table base 35 about the table axis 1. The moving device 20 moves the nozzle 33 so that the nozzle axis 2 passes over the feed plane 4. Then, the C-axis motor 27 rotates the nozzle 33 about the nozzle axis 2.

[0061] Below, refer to Figure 6 as well as Figure 7The method of using the cleaning machine 10 will be described.

[0062] like Figure 6 As shown, the workpiece 5 has an outer peripheral surface 5a, an axial hole 5b and an axial hole 5c. The axial hole 5b and the axial hole 5c extend in the up-down direction and penetrate the workpiece 5. The workpiece 5 may also have an oil hole extending radially from the axial hole 5b or the axial hole 5c, or a groove extending circumferentially of the axial hole 5b or the axial hole 5c.

[0063] When the cleaning machine 10 cleans the entire outer peripheral surface 5a, the W-axis motor 34 and the C-axis motor 27 rotate the worktable 37 and the nozzle 33 synchronously in such a manner that the collision angle 45 between the outer peripheral surface 5a and the jet 6 is constant. The collision angle 45 is, for example, 90 degrees. At this time, the Y-feed device 15 can also be controlled synchronously with the W-axis in such a manner that the distance 44 between the nozzle 33 and the outer peripheral surface 5a is constant. When the outer peripheral surface 5a has a tapping or a pin hole (not shown), the Y-feed device 15, the Z-feed device 21, the C-axis motor 27, and the W-axis motor 34 can also be controlled in such a manner that the center axis of the tapping or the pin hole is coaxial with the jet 6.

[0064] Reference Figure 7 The method of cleaning the shaft hole 5b by the cleaning machine 10 is described below. First, the W-axis motor 34 rotates the worktable 37 in such a way that the central axis of the shaft hole 5b is located on the feed plane 4. Next, above the workpiece 5, the moving device 20 controls the Y feed device 15 and the Z feed device 21 so that the nozzle axis 2 is aligned with the center of the shaft hole 5b. Next, the Z feed device 21 lowers the nozzle 33 into the inside of the workpiece 5 along the Z axis. The nozzle 33 sprays a jet 6, and the C-axis motor 27 rotates the nozzle 33. When the cleaning of the shaft hole 5b is completed, the Z feed device 21 raises the nozzle 33 above the workpiece 5.

[0065] According to the cleaning machine 10 of this embodiment, it is possible to clean the outer peripheral surface 5a of the workpiece 5 and the internal cavities of the shaft hole 5b or shaft hole 5c, etc. In addition, the upper surface or lower surface of the workpiece 5 can also be cleaned by rotating the workpiece 5 by the rotating device 36. In addition, cleaning includes deburring using a high-pressure jet.

[0066] like Figure 7 As shown, when the nozzle 33 is inserted into the interior of the workpiece 5, the nozzle 33 temporarily passes over the top of the workpiece 5, and then the nozzle 33 is inserted into the interior of the workpiece 5. The length 47 from the nozzle head 25 to the nozzle opening 33c (refer to Figure 4 ) is longer than the insertion depth of the nozzle 33 into the workpiece 5. When the nozzle 33 passes over the workpiece 5, the nozzle head 25 rises.

[0067] The nozzle head 25 of the present embodiment is L-shaped. The nozzle 33 extends downward from the front end of the nozzle head 25. The nozzle 33 is inserted into the workpiece 5 in such a manner that the nozzle head 25 and the nozzle 33 are wound around from above the workpiece 5. By raising the feed table 23 to a height substantially the same as the upper surface of the workpiece 5, the nozzle 33 can pass over the top of the workpiece 5. Thus, the height of the feed table 23 at the maximum rise can be suppressed. Thus, the height of the moving column 17 or the machine room 28 can also be suppressed. In the case where the assembly height of the heavy object is high, the height of the assembly area is required. By suppressing the height, the restrictions on the assembly plant are reduced.

[0068] The cleaning chamber body 39a has an upper opening 39d. The upper cover 39b covers the upper opening 39d. When the feed stage 23 is located at the upper end, the nozzle head 25 passes through the upper opening 39d. Thus, only the upper cover 39b protrudes upward from the cleaning chamber body 39a or the machine chamber 28.

[0069] By lowering the height of the cleaning room 39 or the machine room 28, which occupies most of the cleaning machine 10, factory piping, conveyor belts, cable protection pipes on the factory side, etc. can pass through the space around the upper cover 39b (front, back, left, and right). In addition, since the height of most of the cleaning machine 10 can be configured to be low, the appearance of the factory where the cleaning machine 10 is installed is improved.

[0070] The feed table 23 can be lowered and the upper cover 39b can be removed in such a manner that the nozzle head 25 is located below the upper end of the cleaning chamber body 39a. If the cleaning machine 10 is transported in this state, the height of the cleaning machine 10 during transportation can be suppressed. Therefore, it is easy to load the cleaning machine 10 onto a container or a truck. In addition, the cleaning machine 10 can be easily carried in through the carrying-in port.

[0071] The table 37 is rotated around the table axis 1, and the nozzle 33 moves only in the front-rear and up-down directions. Thus, even if the workpiece 5 is large, the machine width of the cleaning machine can be reduced. In addition, the installation area of ​​the cleaning machine can be reduced.

[0072] Since the lower part of the anti-straightening plate 26 is tilted backward, the jet colliding with the anti-straightening plate 26 easily changes its flow and moves downward along the anti-straightening plate 26. Therefore, it is possible to suppress the damage of the nozzle head 25 or the upper cover 39b caused by the rebounding jet. In addition, since the jet 6 ejected backward from the nozzle 33c collides with the anti-straightening plate 26, it is possible to suppress the damage of the telescopic cover 41.

[0073] <Implementation Method 2>

[0074] like Figure 8As shown in FIG. 1 , the cleaning machine 100 of this embodiment includes a cleaning chamber 139. The other structures of the cleaning machine 100 of this embodiment are substantially the same as those of the cleaning machine 10 of the first embodiment.

[0075] The cleaning chamber 139 has a cleaning chamber body 39a, a back opening 39c, an upper opening 39d, and an upper cover 139b. The upper cover 139b is a telescopic cover. The upper cover 139b is, for example, a bellows, a telescopic cover, or a roller cover. The upper cover 139b covers the space between the upper opening 39d and the nozzle head 25.

[0076] The cleaning machine 100 of this embodiment can lower the height of the device by lowering the feed table 23 without removing the upper cover 139b.

Claims

1. A cleaning machine, characterized in that: have: A workbench (37), wherein the workbench (37) is rotatable around a workbench axis (1) extending in an up-down direction; A feeding table (23), the feeding table (23) extending in the front-to-back direction and being movable only in the up-down direction and the front-to-back direction; a nozzle head (25), the nozzle head (25) being arranged on the feeding table (23); and The nozzle (33) has a nozzle (33c) facing a direction different from the worktable axis (1), is arranged on the nozzle head (25), and can rotate around a nozzle axis (2) extending in the up-down direction.

2. The cleaning machine (10, 100) according to claim 1, characterized in that: The nozzle head (25) has: a column portion (25a), the column portion (25a) extending upward from the feed table (23); and A beam portion (25b) extending forward from an upper end portion of the column portion (25a), The nozzle (33) is arranged at the front end portion of the beam portion (25b).

3. The cleaning machine (10, 100) according to claim 1 or 2, characterized in that: The nozzle (33) has a shaft portion (33b) extending downward along the nozzle axis (2). The nozzle (33c) is arranged at the lower end of the shaft portion (33b) and faces in the horizontal direction.

4. The cleaning machine (10, 100) according to any one of claims 1 to 3, characterized in that: Also features: A frame (11), the frame (11) supporting the workbench (37); A moving device (20), the moving device (20) is arranged on the platform (11) and moves the feed platform (23) in the up-down direction and the front-rear direction; and A cleaning chamber (39, 139), the cleaning chamber (39, 139) surrounds the nozzle (33) and has: a cleaning chamber body (39a, 139a), the cleaning chamber body (39a, 139a) having an upper opening (39d, 139d) and being fixed to the stand (11); and an upper cover (39b, 139b), wherein the upper cover (39b, 139b) covers the upper opening (39d, 139d), When the moving device (20) moves the feed table (23) downward, the nozzle head (25) is located below the upper end of the cleaning chamber body (39a). When the moving device (20) moves the feed table (23) upward, the nozzle head (25) passes through the upper opening (39d, 139d).

5. The cleaning machine (10, 100) according to claim 4, characterized in that: The cleaning chamber (39) has a back opening (39c) extending in the up-down direction and capable of allowing the feed table (23) to pass through. The cleaning machine (10, 100) further comprises: a direct hit prevention plate (26) arranged in front of the column portion (25a) and extending in the up-down direction in a manner of being inclined rearward as it goes downward; and A telescopic cover (41) covers the back opening (39c) located below the feed table (23) and is telescopic in the up-down direction.

6. The cleaning machine (10, 100) according to any one of claims 1 to 5, characterized in that: Also features: a cleaning fluid source (43), the cleaning fluid source (43) supplies cleaning fluid to the nozzle (33); a rotating shell (31), the rotating shell (31) being connected to the cleaning fluid source (43) and being arranged on the nozzle head (25); and A main shaft (32) is rotatably supported on the rotating shell (31) with the nozzle shaft (2) as the center, and has a main shaft flow path (32c) connecting the nozzle (33) and the cleaning fluid source (43), and the main shaft (32) supports the nozzle (33).

7. The cleaning machine (10, 100) according to any one of claims 1 to 6, characterized in that: It also has a workbench seat (35), which has a trunnion seat (35b) and can rotate around the workbench shaft (1). The workbench (37) has an ear shaft (37a) extending in the horizontal direction and rotatably supported by the ear shaft seat (35b), and the workbench (37) can rotate around the ear shaft (37a).

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