Washing machine

Abstract

To provide a washing machine configured so that a nozzle can be inserted into a space inside an object to be washed, with a simple structure.SOLUTION: A washing machine 10 is provided with: a table 37 that can rotate with a table shaft 1 extending in a vertical direction as a center; a feeding base 23 extending in a longitudinal direction, which can move only in the vertical direction and the longitudinal direction; a nozzle head 25 arranged on the feeding base 23; and a nozzle 33 having a blowing port 33c pointing to a direction different from a direction of the table shaft 1, which is arranged in the nozzle head 25 and can rotate with a nozzle shaft 2 extending in the vertical direction as a center.SELECTED DRAWING: Figure 1

Description

[Technical field]

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

[0002] A cleaning machine has been proposed that has a hollow table rotation shaft that rotates around a first axis, a table fixed to the table rotation shaft and on which an object to be cleaned can be placed, and a nozzle that rotates around a second axis parallel to the first axis and sprays cleaning fluid in a direction different from the second axis (Patent Publication No. 2021-191572, hereinafter referred to as Patent Document 1). Summary of the Invention [Problem to be solved by the invention]

[0003] In the cleaning machine of Patent Document 1, when the object to be cleaned has a space such as a hole inside, the nozzle cannot be inserted into the space. An object of the present invention is to provide a cleaning machine having a simple structure and capable of inserting a nozzle into the internal space of an object to be cleaned. [Means for solving the problem]

[0004] The first aspect of the present invention is A table that can rotate around a table axis extending in a vertical direction; a feed base extending in a front-rear direction and movable only in an up-down direction and a front-rear direction; A nozzle head disposed on the slide; a nozzle having a nozzle hole facing a direction different from the table axis, the nozzle head being disposed on the nozzle hole and rotatable around a nozzle axis extending in a vertical direction; The cleaning machine has the following features.

[0005] The nozzle passes through the table axis and moves on a feed plane that extends in the up-down and front-rear directions. The nozzle axis passes through the feed plane.

[0006] The apparatus may further include a moving device disposed on the stand for moving the slide table in the vertical and forward / backward directions. When the moving device moves the slide to the lower end, the nozzle head is positioned lower than the upper end of the cleaning chamber body. The moving device may have a Y guide arranged on the base, a moving column arranged on the Y guide and guided by the Y guide, and a Z guide arranged on the moving column. The moving device may have a Y feeder arranged on the base and moving the moving column, and a Z feeder arranged on the moving column and moving the slide table. The moving column moves in the front-to-back direction. The slide table is arranged on the Z guide and guided by the Z guide. The slide table moves in the up-and-down direction.

[0007] The rear opening is disposed in the cleaning chamber body. The telescopic cover may cover the rear opening located above the slide. The top cover may be removably disposed on the cleaning chamber body, and may be a stretchable cover that covers a space between the nozzle head and the upper opening.

[0008] The cleaning fluid source may be located outside the cleaner. The cleaning fluid source is, for example, a liquid pump. The cleaning fluid is primarily a liquid. The cleaning fluid is, for example, water, a water-based cleaning liquid. Effect of the Invention

[0009] 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]

[0010] [Figure 1] FIG. 1 is an elevation view of a cleaning machine according to a first embodiment. [Diagram 2] FIG. 1 is a plan view of a cleaning machine according to a first embodiment; [Diagram 3] FIG. 1 is a perspective view of a cleaning machine according to a first embodiment; [Figure 4] Enlarged view of part IV in Fig. 1 [Diagram 5] Cross-sectional view of line VV in Figure 2 [Figure 6] FIG. 1 is a plan view showing a state in which the outer surface of a workpiece is cleaned by the cleaning machine of the first embodiment; [Figure 7]FIG. 1 is a plan view showing a state in which the inside of a workpiece is cleaned by the cleaning machine of the first embodiment; [Figure 8] FIG. 13 is a perspective view of a cleaning machine according to a second embodiment; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] <Embodiment 1> As shown in Figures 1 to 3, 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 machine chamber 28, an extendable cover 41, a nozzle head 25, a swivel housing 31, a main shaft 32, a C-axis motor 27, a nozzle 33, a direct hit prevention plate 26, a table base 35, and a table 37.

[0012] Hereinafter, the front-to-back direction when viewed from the front (left side of Fig. 1) is defined as the Y axis. The up-down direction is defined as the Z axis. The A axis is the rotation direction centered on the horizontally extending pivot axis 3. The C axis is the rotation direction centered on the vertically extending nozzle axis 2. The W axis is the rotation direction centered on the vertically extending table axis 1. The feed plane 4 (see Fig. 2) is the YZ plane that passes through the table axis 1. The nozzle axis 2 is located on the feed plane 4.

[0013] The moving device 20 is disposed on the stand 11. The stand 11 may have a tank (not shown). The tank stores a cleaning liquid (cleaning fluid). The moving device 20 has a Y guide (front-rear feed guide) 13, a moving column 17, a Y feed device (front-rear feed device) 15, a Z guide (up-down feed guide) 19, and a Z feed device (up-down feed device) 21. Y guide 13 is disposed at the rear of frame 11 and extends in the front-rear direction. Movable column 17 is disposed on Y guide 13 so as to be movable in the front-rear direction. Movable column 17 is L-shaped when viewed from the front. Z guide 19 extends in the up-down direction and is disposed on movable column 17. The Y feed device 15 is disposed on the stand 11. The Y feed device 15 is, for example, a ball screw / servo motor mechanism. The Y feed device 15 moves the moving column 17 back and forth.

[0014] The liquid pump 43 may be disposed outside the cleaner 10. The liquid pump 43 may be connected to a tank (not shown). The liquid pump 43 pressurizes the cleaning liquid (cleaning fluid) and supplies it to the nozzle 33.

[0015] The cleaning chamber 39 has a cleaning chamber body 39a and an upper cover 39b. The cleaning chamber body 39a is fixed to the stand 11. The cleaning chamber body 39a has a rear opening 39c and an upper opening 39d. The rear opening 39c is located on the rear surface of the cleaning chamber body 39a and extends in the vertical direction. The upper opening 39d is located on the top surface of the cleaning chamber body 39a and extends in the front-rear direction. 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 is integrated with the cleaning chamber body 39a to cover the nozzle 33.

[0016] The machine room 28 is disposed on the base 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 the height of the cleaning chamber body 39a.

[0017] The slide 23 is disposed on the Z guide 19 and moves in the vertical direction. The cross section of the slide 23 is, for example, circular, rhombic, or rectangular. The slide 23 penetrates the rear opening 39c. The slide 23 has a slide passage 23a. The slide passage 23a passes through the slide 23 and the nozzle head 25. The slide passage 23a is connected to the liquid pump 43. 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 base 23 in the vertical direction.

[0018] The nozzle head 25 is L-shaped in a side view. The nozzle head 25 has a pillar portion 25a and a beam portion 25b. The pillar portion 25a is disposed at the front end portion of the feed table 23. The pillar portion 25a extends upward from the feed table 23. The front surface of the pillar portion 25a may be inclined backward as it extends downward. The beam portion 25b extends forward from the upper end of the pillar portion 25a.

[0019] The slide 23 and the nozzle head 25 move together. When the slide 23 is in the lower position, the upper end of the nozzle head 25 is lower than the upper end of the cleaning chamber body 39a. When the slide 23 moves upward, the nozzle head 25 passes through the upper opening 39d.

[0020] The telescopic cover 41 is, for example, a bellows, a telescopic cover, or a roll cover. The telescopic cover 41 covers the area between the rear opening 39c and the feed base 23. The telescopic cover 41 telescopically extends in the vertical direction.

[0021] The C-axis motor 27 is disposed inside the nozzle head 25. As shown in Fig. 4, the C-axis motor 27 has an output shaft 27a and a key groove 27b. The output shaft 27a extends along the nozzle axis 2 to near the lower surface of the beam portion 25b. The key groove 27b is located at the lower end of the output shaft 27a.

[0022] The swivel housing 31 is disposed on the underside of the front end of the beam portion 25b. As shown in FIG. 4, the swivel housing 31 has a body 31a, an annular passage 31b, a main bearing 31c, and an upper passage 31d. The body 31a extends along the nozzle axis 2. The body 31a has a cylindrical inner surface 31e. The annular passage 31b is a circumferential groove disposed on the inner surface 31e. The main bearing 31c is disposed at the upper and lower ends of the body 31a. The upper passage 31d penetrates the body 31a. The upper passage 31d connects the feed block passage 23a and the annular passage 31b.

[0023] The main shaft 32 is cylindrical and is supported by the main bearing 31c around the nozzle shaft 2. The main shaft 32 has a cylindrical portion 32b, a key 32a, a main shaft passage 32c, and a flange 32d. The cylindrical portion 32b slides on the inner surface 31e. The flange 32d is disposed at the lower end of the cylindrical portion 32b. The main shaft passage 32c opens into the flange 32d and connects the annular passage 31b and the nozzle passage 33d. The key 32a is disposed at the upper end of the cylindrical portion 32b and engages with the key groove 27b.

[0024] The nozzle 33 has a flange 33a, a shaft portion 33b, a nozzle hole 33c, and a nozzle flow path 33d. The flange 33a is disposed at the upper end of the nozzle 33 and is fastened to the flange 32d. The shaft portion 33b extends downward from the flange 33a along the nozzle axis 2. The nozzle hole 33c is disposed at the tip of the shaft portion 33b. The height of the nozzle hole 33c is substantially the same as the height of the feed table 23. For example, the nozzle hole 33c ejects the jet 6 in the horizontal direction. The nozzle flow path 33d opens to the flange 33a and connects the main shaft flow path 32c and the nozzle hole 33c.

[0025] As shown in FIG. 1 and FIG. 3, the direct hit prevention plate 26 is disposed on the front surface of the column portion 25a. The direct hit prevention plate 26 may have a folded portion 26b. The direct hit prevention plate 26 extends vertically and horizontally. The direct hit prevention plate 26 may be inclined backward as it extends downward. Preferably, the direct hit prevention plate 26 extends downward further than the column portion 25a and the feed base 23. The folded portions 26b are disposed on the left and right of the direct hit prevention plate 26 when viewed from the front. The folded portions 26b are folded forward. When the nozzle 33c faces backward, the jet 6 ejected from the nozzle 33c collides with the direct hit prevention plate 26. Preferably, the direct hit prevention plate 26 is detachable from the nozzle head 25.

[0026] 5, the cleaner 10 has 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.

[0027] The table base 35 has a pair of trunnion receivers 35b and a swivel device 36. The table base 35 is U-shaped when viewed from the front. When viewed from the front, the central portion of the table base 35 extends horizontally. When viewed from the front, the left and right ends of the table base 35 extend upward from the central portion. The table base 35 is disposed on the frame 11 and rotates around the table axis 1. The table base 35 is connected to the W-axis motor 34. The trunnion receivers 35b are disposed at the upper left and right ends of the table base 35, centered around the swivel axis 3. The swivel device 36 is supported by the table base 35. The swivel device 36 is integral with the table base 35 and rotates around the table axis 1. The swivel device 36 is, for example, an air cylinder or a servo motor.

[0028] The table 37 has a trunnion shaft 37a. The table 37 is U-shaped when viewed from the front. When viewed from the front, the central portion of the table 37 extends horizontally. When viewed from the front, the left and right ends of the table 37 extend upward from the central portion. The trunnion shafts 37a are disposed at the upper left and right ends of the table 37. The trunnion shafts 37a are rotatably supported by the trunnion receivers 35b. The table 37 is connected to the rotating device 36. The table 37 can rotate, for example, 90 degrees or 180 degrees around the rotating shaft 3. The workpiece 5 is placed on the table 37. The workpiece 5 is, for example, an E-axle case, an inverter case, or a transaxle case.

[0029] 2, the table 37 rotates integrally with the table base 35 around 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 around the nozzle axis 2.

[0030] A method of using the cleaner 10 will now be described with reference to FIGS. 6, the workpiece 5 has an outer peripheral surface 5a and shaft holes 5b and 5c. The shaft holes 5b and 5c extend in the vertical direction and penetrate the workpiece 5. The workpiece 5 may have oil holes extending radially from the shaft holes 5b and 5c and grooves extending circumferentially of the shaft holes 5b and 5c.

[0031] When the cleaner 10 cleans the entire outer peripheral surface 5a, the W-axis motor 34 and the C-axis motor 27 rotate the table 37 and the nozzle 33 in synchronization so 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 may be controlled in synchronization with the W axis so that the distance 44 between the nozzle 33 and the outer peripheral surface 5a is constant. When the outer peripheral surface 5a has a tap, a pinhole, or the like (not shown), the Y feed device 15, the Z feed device 21, the C-axis motor 27, and the W-axis motor 34 may be controlled so that the central axis of the tap or pinhole is coaxial with the jet 6.

[0032] With reference to FIG. 7, a method in which the cleaner 10 cleans the shaft hole 5b will be described. First, the W-axis motor 34 rotates the table 37 so 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 to align the nozzle axis 2 with the center of the shaft hole 5b. Next, the Z feed device 21 lowers the nozzle 33 into the workpiece 5 along the Z axis. The nozzle 33 ejects the jet 6, and the C-axis motor 27 rotates the nozzle 33. When cleaning of the shaft hole 5b is completed, the Z feed device 21 raises the nozzle 33 above the workpiece 5.

[0033] The cleaning machine 10 of this embodiment can clean the outer peripheral surface 5a of the workpiece 5 and internal cavities such as the shaft holes 5b and 5c. In addition, the turning device 36 turns the workpiece 5, so that the upper and lower surfaces of the workpiece 5 can also be cleaned. Note that the cleaning includes deburring using a high-pressure jet.

[0034] 7, when inserting the nozzle 33 into the workpiece 5, the nozzle 33 first passes above the workpiece 5, and then the nozzle 33 is inserted into the workpiece 5. The length 47 (see FIG. 4) from the nozzle head 25 to the nozzle hole 33c is longer than the insertion depth of the nozzle 33 into the workpiece 5. When the nozzle 33 passes above the workpiece 5, the nozzle head 25 rises. The nozzle head 25 of this embodiment is L-shaped. The nozzle 33 extends downward from the tip of the nozzle head 25. The nozzle head 25 inserts the nozzle 33 into the workpiece 5 so as to embrace the workpiece 5. The nozzle 33 can pass above the workpiece 5 by raising the feed table 23 to a height substantially the same as the upper surface of the workpiece 5. This makes it possible to suppress the height of the feed table 23 at the maximum elevation. This also makes it possible to suppress the height of the moving column 17 and the machine room 28. When the assembly height of a heavy object is high, the height of the assembly area is required. By suppressing the height, the constraints of the assembly factory are reduced.

[0035] The cleaning chamber body 39a has an upper opening 39d. The upper cover 39b covers the upper opening 39d. When the feed base 23 is at the upper end, the nozzle head 25 passes through the upper opening 39d. As a result, only the upper cover 39b protrudes upward from the cleaning chamber body 39a and the machine chamber 28. By lowering the height of the cleaning chamber 39 and machine room 28, which occupy most of the cleaning machine 10, factory piping, conveyors, factory cable protection pipes, etc. can pass through the space around the upper cover 39b (front, back, left and right). Also, because the height of most of the cleaning machine 10 can be configured to be low, the visibility of the factory in which the cleaning machine 10 is installed is improved.

[0036] The feed table 23 can be lowered and the upper cover 39b can be removed so that the nozzle head 25 is positioned 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 reduced. This makes it easier to load the cleaning machine 10 onto a container or truck. In addition, the cleaning machine 10 can easily pass through an entrance and can be easily transported.

[0037] The table 37 rotates around the table axis 1, and the nozzle 33 moves only in the front-rear and up-down directions. This allows the width of the washer to be narrowed even if the workpiece 5 is large. Also, the installation area of ​​the washer can be reduced.

[0038] Since the lower part of the direct hit prevention plate 26 is inclined backward, the jet flow that collides with the direct hit prevention plate 26 changes its flow along the direct hit prevention plate 26 and tends to proceed downward. Therefore, damage to the nozzle head 25 and the upper cover 39b caused by the rebounding jet flow can be suppressed. In addition, since the jet flow 6 ejected backward from the nozzle 33c collides with the direct hit prevention plate 26, damage to the extendable cover 41 can be suppressed.

[0039] <Embodiment 2> 8, the cleaner 100 of this embodiment has a cleaning chamber 139. Other configurations of the cleaner 100 of this embodiment are substantially the same as those of the cleaner 10 of the first embodiment. The cleaning chamber 139 has a cleaning chamber body 39a, a rear 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 roll cover. The upper cover 139b covers the area between the upper opening 39d and the nozzle head 25.

[0040] In the cleaning machine 100 of this embodiment, the height of the device can be reduced by lowering the slide table 23 without removing the upper cover 139b. [Explanation of symbols]

[0041] 1 Table Axis 2 Nozzle shaft 10, 100 Washing machine 23 Slide 25 Nozzle head 33 Nozzle 33c spout 37 Table

Claims

1. A table that can rotate around a table axis extending in a vertical direction; a feed base extending in a front-rear direction and movable only in an up-down direction and a front-rear direction; A nozzle head disposed on the slide; a nozzle having a nozzle hole facing a direction different from the table axis, the nozzle head being disposed on the nozzle hole and rotatable around a nozzle axis extending in a vertical direction; A cleaning machine having

2. The nozzle head is A column portion extending upward from the slide; A beam portion extending forward from an upper end portion of the column portion; having The nozzle is disposed at the tip of the beam portion.

2. The cleaning machine according to claim 1.

3. The nozzle has a shaft portion extending downward along the nozzle axis, The nozzle is disposed at the lower end of the shaft portion and faces horizontally.

3. A cleaning machine according to claim 1 or 2.

4. A stand supporting the table; a moving device disposed on the frame and configured to move the slide table in a vertical direction and a front-rear direction; A cleaning chamber surrounding the nozzle, a cleaning chamber body having an upper opening and fixed to the stand; An upper cover that covers the upper opening; a cleaning chamber having a Further comprising: When the moving device moves the slide to the lower end, the nozzle head is positioned below the upper end of the cleaning chamber body, When the moving device moves the slide upward, the nozzle head passes through the upper opening.

3. The cleaning machine according to claim 2.

5. The cleaning chamber extends in a vertical direction and has a rear opening through which the slide table can pass, A direct hit prevention plate disposed in front of the column portion, the direct hit prevention plate extending in the vertical direction so as to incline backward as it goes downward; a telescopic cover that covers the rear opening located below the feed base and is vertically telescopic; The cleaning machine of claim 4 further comprising:

6. a source of cleaning fluid for supplying cleaning fluid to the nozzle; a swivel housing connected to the cleaning fluid source and disposed on the nozzle head; a main shaft supported by the swivel housing for rotation about the nozzle axis, the main shaft having a main shaft passage connecting the nozzle and the cleaning fluid source, and supporting the nozzle; 3. The cleaning machine according to claim 1 or 2, further comprising:

7. The apparatus further includes a table base having a trunnion support and rotatable around the table axis, The table has a trunnion axis that extends in a horizontal direction and is rotatably supported by the trunnion receiver, and is rotatable around the trunnion axis.

3. A cleaning machine according to claim 1 or 2.

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