JP5588768B2 - Shock absorber cleaning device, cleaning method and manufacturing method - Google Patents

Description

The present invention relates to a shock absorber cleaning device , a cleaning method, and a manufacturing method.

  There is a cleaning device that cleans an object by immersing it in cleaning water in a water tank (see, for example, Patent Document 1).

JP-A-6-254469

  In the above-described cleaning apparatus, the object is cleaned by immersing it in the cleaning water in the water tank, so that the cleaning water is contaminated by impurities removed from the object. Therefore, on the contrary, impurities etc. from the cleaning water may adhere to the object, and there is a problem that the cleaning efficiency is not good.

Therefore, an object of the present invention is to provide a shock absorber cleaning device , a cleaning method, and a manufacturing method that can improve cleaning efficiency.

In order to achieve the above object, the shock absorber cleaning device of the present invention has a shower main body arranged on the lower side of the shock absorber suspended by the mounting portion, an outer peripheral surface of the outer cylinder of the shock absorber , or a cover. A shower spout is disposed so that the cleaning fluid is ejected from the lower side toward the annular gap between the tube portion and the outer tube .

According to the shock absorber cleaning method of the present invention, the outer peripheral surface of the outer cylinder or the cylindrical portion of the cover and the outer cylinder are suspended with respect to the shock absorber suspended with the cover on the upper side and the outer cylinder on the lower side. The cleaning fluid is ejected from the lower side toward the annular gap between and the foreign matter adhering to the rod is washed away by the cleaning fluid passing through the annular gap.
Further, the shock absorber manufacturing method of the present invention is a cleaning step in which the outer peripheral surface of the outer cylinder or the cover of the cover is suspended with respect to the shock absorber suspended with the cover on the upper side and the outer cylinder on the lower side. A cleaning fluid is ejected from the lower side toward the annular gap between the cylindrical portion and the outer cylinder, and the film forming liquid adhering to the rod is washed away by the cleaning fluid that has passed through the annular gap .

  According to the present invention, the cleaning efficiency can be improved.

It is the front view which made the cross section the part which shows the buffer wash | cleaned by 1st Embodiment which concerns on this invention. It is a front view which shows the washing | cleaning apparatus of 1st Embodiment which concerns on this invention, Comprising: (a) shows the horizontal state of a supporting member, (b) shows the inclination state of a supporting member, respectively. It is a top view which shows the washing | cleaning apparatus of 1st Embodiment which concerns on this invention. It is a front view which shows the washing | cleaning apparatus of 2nd Embodiment which concerns on this invention.

“First Embodiment”
1st Embodiment which concerns on this invention is described based on FIGS. 1-3.

  FIG. 1 shows a shock absorber 10, which has a substantially cylindrical cylinder (outer cylinder) 11 in which a working fluid is enclosed. A piston (not shown) is slidably inserted into the cylinder 11, and a rod 12 is connected to the piston at one end thereof. The other end of the rod 12 projects from one end of the cylinder 11 in the axial direction to the outside. Here, although not shown, a seal member is attached to the one end portion of the cylinder 11 so as to seal the cylinder 11 and slidably support the rod 12. This seal member is made of a rubber material at least in a sliding contact portion with the rod 12.

  A cylindrical mounting eye 14 is integrally fixed to the end of the rod 12 on the protruding tip side with a central axis in the direction orthogonal to the axis of the rod 12. A cylindrical mounting eye 15 is also integrally fixed to the end of the cylinder 11 opposite to the rod 12 with a central axis in the direction perpendicular to the axis of the cylinder 11. A rubber bush 16 is coaxially fitted inside the mounting eye 14, and a rubber bush 17 is coaxially fitted inside the mounting eye 15.

  The shock absorber 10 is a fitting in which a rubber bushing 16 in the mounting eye 14 fixed to the rod 12 and a rubber bushing 17 in the mounting eye 15 fixed to the cylinder 11 are inserted through the two parts, and the two parts vibrate relatively. Will be attached to. The shock absorber 10 attenuates the vibration generated between these two parts. For example, the attachment eye 14 side is attached to the vehicle body side via a fixture, and the attachment eye 15 side is attached to the wheel via the fixture.

  A dust cover 20 as a cover for covering the protruding portion of the rod 12 from the cylinder 11 is attached to the protruding tip side of the rod 12 adjacent to the mounting eye 14 described above. The dust cover 20 includes a perforated disc-shaped lid portion 21 fixed to the rod 12 and a cylindrical tube portion 22 extending in the axial direction from the outer peripheral portion of the lid portion 21. The cylindrical portion 22 has an inner diameter slightly larger than the outer diameter of the cylinder 11, and is wrapped in the axial direction on a protruding portion of the rod 12 from the cylinder 11 and a portion of the cylinder 11 on the rod 12 side. The rod 12 and the cylinder 11 are arranged coaxially. Therefore, an annular gap is formed between the cylinder portion 22 and the cylinder 11. In this way, the dust cover 20 is disposed so as to cover the protruding portion of the rod 12 from the cylinder 11 and a portion of the cylinder 11 on the rod 12 side.

  2 and 3 show a cleaning device 30 for cleaning the shock absorber 10 assembled in the above-described structure. The cleaning device 30 is provided in an automated automatic painting line for painting the shock absorber 10 after assembly. The automatic coating line has a transport device 32 that transports the shock absorber 10 above the floor surface. The transport device 32 includes a conveyor (mounting portion) 33 that moves in the lateral direction as shown in FIG. The conveyor 33 has a number of suspensions (attachment portions) 34 suspended at equal intervals in the horizontal direction. (In Fig. 2, the depth direction of the page)

  The hook 34 is inserted into the mounting eye 14 of the shock absorber 10 on the dust cover 20 side, and the shock absorber 10 is suspended in this state. In other words, the shock absorber 10 is suspended by the suspension tool 34 in the mounting eye 14 on the dust cover 20 side. Therefore, the shock absorber 10 moves together with the lifting tool 34 as the conveyor 33 travels with the dust cover 20 on the upper side and the protruding portion of the cylinder 11 from the dust cover 20 on the lower side.

  It should be noted that the shock absorber 10 is along the vertical direction in a state where only the gravity acts while being suspended by the suspension tool 34. However, since only the upper part is supported, a force other than gravity is applied so that the lower side can swing in all horizontal directions. Further, the protruding amount of the rod 12 from the cylinder 11 in the state of being hung by the hanger 34 is an amount that wraps the dust cover 20 and a part of the cylinder 11 on the rod 12 side in the axial direction. .

  The cleaning device 30 is provided within a range in which the conveyor 33 moves horizontally in a straight line in the transport device 32, and has a pair of side wall portions 38 and 39 erected on both the left and right sides in the moving direction of the conveyor 33. Yes. The left and right side wall portions 38, 39 are installed on the floor via the mounting table 40, and the distance between them is such that the upper end portion is narrower than the lower side. The conveying device 32 moves the lifting tool 34 in the narrow space 42 at the narrow upper end of the left and right side wall portions 38, 39, and the wide washing space 43 below the narrow space 42 The shock absorber 10 hung by the hanger 34 moves.

  The cleaning device 30 has a shower unit 45 for cleaning the shock absorber 10 being transported by the transport device 32 at the lower portion of the cleaning space 43. The shower portion 45 is disposed on the lower side of the shock absorber 10 suspended by the suspension tool 34 so as to be separated therefrom. In addition, the cleaning device 30 includes a cleaning liquid supply source (not shown) that supplies the shower unit 45 with a cleaning liquid (cleaning fluid) such as water under pressure, and a switching mechanism 47 that switches the direction in which the shower unit 45 ejects the cleaning liquid. ing.

  The switching mechanism 47 includes the mounting table 40 whose upper surface is horizontally disposed, a support member 49 mounted on the mounting table 40, and a plurality of switching cylinders 50 that switch the angle of the support member 49. Yes. The support member 49 is disposed so as to straddle the left and right sides of the moving axis of the conveyor 33. The plurality of switching cylinders 50 are all along the vertical direction, and are connected to the end of the support member 49 on either the left or right side with respect to the moving axis of the conveyor 33 by the connecting shaft 51 so as to be separated from the front and rear. Yes. Therefore, these switching cylinders 50 expand and contract in synchronization to raise and lower the connection side end of the support member 49. Thereby, the other end of the support member 49 is moved up and down with one end supported by the mounting table 40. Here, the switching cylinder 50 may be any of a hydraulic type, a pneumatic type, and an electric type.

  As shown in FIG. 2A, when the switching cylinder 50 is in the extended state, the support member 49 is in a horizontal state mounted on the mounting table 40 as a whole. On the other hand, as shown in FIG. 2B, when the switching cylinder 50 is in the contracted state, the support member 49 supports the mounting table 40 on the side opposite to the switching cylinder 50 while supporting the end edge on the switching cylinder 50 side. It will be in the inclination state which raises the edge part of. The switching mechanism 47 continuously repeats the operation of changing the support cylinder 49 from the horizontal state to the inclined state by returning to the horizontal state and returning to the inclined state by alternately repeating the expansion and contraction of the switching cylinder 50. Rocks. Since the front and rear switching cylinders 50 expand and contract in synchronization, the support member 49 always matches the length direction with the moving direction of the conveyor 33.

  The shower unit 45 has a shower main body 52 that is disposed on the lower side of the shock absorber 10 that is suspended by the suspension tool 34 and is spaced apart from the shock absorber 10. The shower main body 52 is supplied with cleaning liquid from a cleaning liquid supply source. It consists of a pair of ejection pipes 53 and 54. As shown in FIG. 3, the ejection pipes 53 and 54 are arranged on both the left and right sides with respect to the movement axis of the conveyor 33 in a state along the movement direction of the conveyor 33, and are fixed to the support member 49. The ejection pipes 53 and 54 always include the case where the support member 49 is in the horizontal state shown in FIG. 2A and the case where the support member 49 is in the inclined state shown in FIG. The state along the moving direction of the conveyor 33 is maintained, and the state positioned on both the left and right sides with respect to the moving axis of the conveyor 33 is maintained.

  As shown in FIG. 3, a plurality of shower outlets 55 are formed in one jet pipe 53 at predetermined equal intervals in the extending direction of the jet pipe 53, and the other jet pipe 54 also has a shower. The jet ports 56 are formed at predetermined equal intervals in the extending direction of the jet pipe 54. The shower outlets 55 and 56 are alternately staggered and provided in the extending direction of the outlet pipes 53 and 54 (that is, the moving direction of the conveyor 33). In addition, the plurality of shower outlets 55 provided in the ejection pipe 53 are aligned in the circumferential direction of the ejection pipe 53, and the plurality of shower outlets 56 provided in the ejection pipe 54 are in the circumferential direction of the ejection pipe 54. The positions of are matched. In addition, you may make it the jet nozzles 55 and 56 match | combine the position of the extension direction of the jet piping 53 and 54 on a one-on-one basis.

  As shown in FIG. 2 (a), the shower outlet 55 of one of the jet pipes 53 is directed obliquely upward so as to rise upward toward the other jet pipe 54, and is suspended from the suspension 34. A pressurized cleaning liquid is ejected in a rod shape toward the held shock absorber 10 so as not to diffuse. The shower outlet 56 of the other jet pipe 54 is directed obliquely upward so as to rise upward toward the one jet pipe 53, and toward the shock absorber 10 suspended by the lifting tool 34. Pressurized cleaning liquid is ejected in a rod shape. The shower spouts 55 and 56 have their central axes orthogonal to the moving direction of the conveyor 33. The shower jets 55 and 56 constitute a shower unit 45 together with the shower main body 52.

  The switching mechanism 47 described above switches the angle of the ejection pipes 53 and 54 by switching the angle of the support member 49, and switches the angle of the shower ejection ports 55 and 56 with respect to the shock absorber 10 during the ejection of the cleaning liquid.

  As shown in FIG. 2A, when the support member 49 is in the horizontal state described above, each shower outlet 55 of the ejection pipe 53 on the switching cylinder 50 side is suspended by the suspension 34, in the transport direction. Is located on one side in the radial direction with respect to the shock absorber 10 along the vertical direction, and directed from this one side to the gap between the lower end of the dust cover 20 and the cylinder 11 and ejects the cleaning liquid in this direction. It becomes a state to do. Further, when the support member 49 is also in the horizontal state, the shower outlets 56 of the ejection pipe 54 on the side opposite to the switching cylinder 50 are aligned with the position in the transport direction and suspended vertically by the suspension 34. The shock absorber 10 is located on the opposite side in the radial direction, and the cleaning liquid is ejected from the opposite side to the lower position of the cylinder 11.

  That is, when the support member 49 and the shower main body 52 provided on the support member 49 are in a horizontal state, the shower spouts 55 and 56 of the shower main body 52 are aligned with the center line of the shock absorber 10 in the transport direction. On the other hand, the cleaning liquid is inclined at different angles, and the cleaning liquid is ejected at different angles.

  As shown in FIG. 2B, when the support member 49 is in the inclined state described above, each shower outlet 56 of the outlet pipe 54 on the side opposite to the switching cylinder 50 is suspended by the suspension 34. The shock absorber 10 is positioned on the opposite side of the radial direction with respect to the shock absorber 10 aligned in the vertical direction, and is directed to the gap between the lower end of the dust cover 20 and the cylinder 11 from this opposite side. Then, the cleaning liquid is ejected. Further, when the support member 49 is also in the inclined state, the shower outlets 55 of the ejection pipe 53 on the switching cylinder 50 side are suspended by the suspension 34 and are positioned in the transport direction so as to fit along the vertical direction. With respect to the container 10, it exists in the said one side of the radial direction, and it will be in the state which jets a washing | cleaning liquid to the lower part position of the cylinder 11 from this one side.

  As described above, the shower outlets 55 and 56 of the shower main body 52 are disposed on both sides in the radial direction of the shock absorber 10 so as to incline toward the shock absorber 10 and the cleaning liquid is ejected. 34 moves between the shower spouts 55 and 56 arranged so as to be separated from each other. A plurality of shower spouts 55 and 56 of the shower main body 52 are provided along the movement axis on both sides of the movement axes of the conveyor 33 and the lifting tool 34.

  When the support member 49 is in a horizontal state, the shower outlets 55 and 56 of the outlet pipes 53 and 54 are located at equal distances with respect to the center line of the shock absorber 10 that is aligned in the conveying direction and is vertical. It may be inclined at the same angle. In this case, the angle formed with the center line of the shock absorber 10 is, for example, 10 degrees, and the shower outlets 55 and 56 are inclined so that the cleaning liquid is ejected at this angle.

  In the automatic coating line, the shock absorber 10 assembled in the above-described structure in the assembly process, which is the previous process, is coated while being transported by the transport device 32. The automatic coating line is specifically a line for performing electrostatic coating, and in the initial stage, there is a degreasing process for degreasing the assembled shock absorber 10, and then there is a cleaning process for cleaning the shock absorber 10. Thereafter, there is a surface adjustment step for adjusting the surface of the shock absorber 10. In addition, after the surface adjustment step, there is a film forming solution applying step for applying the film forming solution to the cylinder 11 and the dust cover 20 of the shock absorber 10, followed by a washing step for washing the shock absorber 10, There is a draining drying process for drying the shock absorber 10, followed by a painting process for painting the shock absorber 10. Finally, there is a baking drying process in which the paint is baked and dried. The above-described cleaning device 30 performs a cleaning process for cleaning the shock absorber 10 after the film forming liquid coating process and before the draining and drying process.

  In the film forming liquid application step, the film forming liquid is applied to the cylinder 11 and the dust cover 20 of the shock absorber 10. The film forming liquid reacts with iron on the surfaces of the cylinder 11 and the dust cover 20 to roughen the surface and improve the adhesion of the paint applied in the subsequent coating process. If it remains on the surface of 20, the paint may not be applied or peeled off. For this reason, in the subsequent cleaning process, the film-forming solution including the portion adhering to the rod 12 is washed away from the shock absorber 10.

  That is, in the cleaning process, the shock absorber 10 with the film forming liquid remaining is transported by the transport device 32 and passes through the cleaning space 43 between the side wall portions 38 and 39 of the cleaning device 30. During the passage, the cleaning device 30 causes the switching mechanism 47 to swing the support member 49, that is, the shower main body 52 continuously so that the horizontal state and the inclined state are alternately expressed, and all the showers of the shower main body 52 are moved. The cleaning liquid is continuously ejected from the ejection ports 55 and 56 toward the shock absorber 10.

  During this time, the cleaning liquid ejected from the shower outlets 55 and 56 hits the shock absorber 10 whose position in the transport direction is aligned and swings the lower part thereof, and one of the cleaning liquids ejected from the shower outlets 55 and 56 Depending on the angle of the shock absorber 10 with respect to the shock absorber 10 whose position in the transport direction is matched, the portion will contact the outer peripheral surface of the cylinder 11 obliquely from the side opposite to the dust cover 20. In this way, the air enters the space between the dust cover 20, the cylinder 11 and the rod 12 through the gap between the dust cover 20 and the cylinder 11. Further, a part of the cleaning liquid ejected from the shower spouts 55 and 56 is directly connected to the dust cover 20 and the cylinder 11 depending on the swing angle of the shock absorber 10 with respect to the shock absorber 10 whose position in the transport direction is matched. And enters the space between the dust cover 20, the cylinder 11, and the rod 12. The cleaning liquid that has entered the space between the dust cover 20, the cylinder 11, and the rod 12 cleans the inner surface of the dust cover 20, the outer peripheral surface of the rod 12, or the upper surface of the cylinder 11, and then the dust cover 20, It will be discharged by gravity through the gap.

  On the other hand, the cleaning liquid that falls on the shock absorber 10 without falling into the space between the dust cover 20, the cylinder 11, and the rod 12 remains on the outer surface of the shock absorber 10. The cleaning liquid and other contamination discharged from the space between them will be washed away.

  As described above, the cleaning device 30 includes the film forming liquid adhering to the rod 12 by spraying and cleaning the cleaning liquid while changing the angle between the cylinder 11 and the dust cover 20 from the lower side in the cleaning process. The entire contamination of the shock absorber 10 is washed away. Moreover, the transport device 32 moves in the horizontal direction with the shock absorber 10 suspended, and the cleaning device 30 is a shower arranged along the moving direction on both the left and right sides below the moving shock absorber 10. The shock absorber 10 is cleaned with the cleaning liquid ejected from the ejection ports 55 and 56.

  When the above-described cleaning device described in Patent Document 1 is applied to the above-described cleaning of the shock absorber 10, the shock absorber 10 is cleaned by immersing it in the cleaning water in the water tank, and thus is removed from the shock absorber 10. Washing water will be contaminated with impurities. Therefore, conversely, impurities or the like from the cleaning water may adhere to the buffer 10 and there is a problem that the cleaning efficiency is not good. Further, if the shock absorber 10 is immersed in the cleaning water in the water tank, the cleaning water cannot be smoothly introduced into the dust cover 20, and even if it enters, the rod is only immersed in the cleaning water. There was a problem that the film-forming solution adhering to No. 12 could not be washed off satisfactorily.

  On the other hand, according to 1st Embodiment described above, since the shower part 45 will eject a washing | cleaning liquid with respect to the buffer 10, it can always wash | clean the buffer 10 with a clean washing water. it can. Therefore, the cleaning efficiency can be improved. Further, in the first embodiment, the cleaning liquid is ejected in a rod shape so as not to diffuse. Generally, cleaning liquid that is diffused and sprayed in a conical shape can clean a wide area and has high cleaning performance.However, when cleaning the inside of the cover, the cleaning liquid cannot be continuously applied, so it should be sprayed in a rod shape. The cleaning effect can be improved even in a short time.

  In addition, the shower spouts 55 and 56 are disposed in the shower main body 52 disposed on the lower side of the shock absorber 10 suspended by the suspension 34 so as to incline toward the shock absorber 10 and eject the cleaning liquid. The cleaning liquid can be satisfactorily infiltrated between the cylinder 11 and the dust cover 20 by guiding the outer peripheral surface of the cylinder 11. Therefore, the film forming liquid adhering to the outer peripheral surface of the rod 12 in the dust cover 20 can be washed off satisfactorily. As a result, the seal member provided on the cylinder 11 and slidably supporting the rod 12 can be prevented from being damaged due to the film forming liquid adhering to the rod 12, and good sealing performance of the seal member is maintained. can do. In other words, the film-forming solution is mainly composed of zinc phosphate, and the zinc phosphate after the drying step has an uneven shape, so that the seal member may be damaged if the zinc phosphate remains attached to the rod. However, since the film-forming solution can be washed off well before the drying step, it is possible to prevent such a seal member from being damaged.

  Further, the switching mechanism 47 switches the angle of the shower outlets 55 and 56 with respect to the shock absorber 10 during the ejection of the cleaning liquid, and the cleaning liquid is supplied from the lower side between the cylinder 11 and the dust cover 20 in the cleaning process. By spraying and cleaning while changing the angle, the film-forming liquid adhering to the rod 12 is washed away, so that the film-forming liquid adhering to the outer peripheral surface of the rod 12 in the dust cover 20 can be further washed off. .

  Moreover, since the shower jets 55 and 56 provided in the shower main body 52 are spaced apart from both sides in the radial direction of the shock absorber 10, the shock absorber 10 can be cleaned well from both radial sides. It should be noted that at least two shower spouts 55 and 56 may be provided on both sides of the shock absorber 10 in the radial direction.

  In addition, the lifting tool 34 that suspends the shock absorber 10 moves between the shower outlets 55 and 56 that are spaced apart from each other in the radial direction of the shock absorber 10. By the washing liquid ejected from the shower spouts 55 and 56 arranged in a line along the moving direction on the left and right sides of the lower side of the moving shock absorber 10. Since the shock absorber 10 is washed, the shock absorber 10 can be washed while being moved, and a number of the shock absorbers 10 can be washed continuously.

  In addition, the shower spouts 55 and 56 are provided along the movement axis on both sides of the movement axis of the conveyor 33 that supports the lifting device 34 that holds the shock absorber 10. However, it is possible to sufficiently wash the plurality of shock absorbers 10 continuously and satisfactorily.

  Further, since the switching mechanism 47 supports one end of the support member 49 of the shower main body 52 and moves the other end up and down, the angle of the shower jets 55 and 56 with respect to the shock absorber 10 can be switched with a simple structure. it can.

  In addition, since the lower side of the shock absorber 10 can be swung left and right by being hung by the hanger 34, the shock absorber 10 can be swung due to a collision of the cleaning liquid, etc. Can be washed.

“Second Embodiment”
Next, a second embodiment according to the present invention will be described mainly based on FIG. 4 with a focus on differences from the first embodiment. In addition, about the site | part which is common in 1st Embodiment, it represents with the same name and the same code | symbol.

  In the second embodiment, the support member 49 is swingably supported by the mounting table 40 at the center position in the left-right direction. In other words, the support member 49 is provided with a support shaft 60 protruding in parallel with the moving axis of the conveyor 33 at the center position in the left-right direction on both front and rear sides (only one is shown in FIG. 4) in the transport direction of the transport device 32. The mounting table 40 is provided with a bearing portion 61 that rotatably supports these support shafts 60. Since the support shaft 60 is located at the center position in the left-right direction of the support member 49, the support shaft 60 is located between the ejection pipes 53 and 54 and between the shower ejection ports 55 and 56.

  In the second embodiment, the switching mechanism 47 includes a gear 62 that is fixed to the support shaft 60, and a motor 64 that has a gear 63 that meshes with the gear 62 as a drive shaft and is attached to the mounting table 40. ing.

  The switching mechanism 47 transmits the rotation via the gear 63 and the gear 62 by alternately rotating the motor 64 forward and backward by a predetermined angle, and swings the support member 49 in both directions around the support shaft 60. . That is, one ejection pipe 53 is raised by a predetermined height and the other ejection pipe 54 is lowered by the same height, and the other ejection pipe 54 is raised by a predetermined height. The support member 49 is continuously swung so that the second swinging state in which the height is lowered alternately appears. In other words, the switching mechanism 47 alternately raises and lowers both ends with the shower outlets 55 and 56 of the shower main body 52 as a fulcrum.

  As shown in FIG. 4, when the support member 49 is in a horizontal state, the shower outlets 55 and 56 of the ejection pipes 53 and 54 are aligned with the positions in the transport direction that are suspended by the suspension 34. Further, with respect to the shock absorber 10 along the vertical direction, it is directed to the lower position of the cylinder 11 and the cleaning liquid is ejected in this direction. In this case, with respect to the center line of the shock absorber 10, the shower outlets 55 and 56 of the ejection pipes 53 and 54 are located at equal distances and are inclined at the same angle. The shower outlets 55 and 56 are inclined so that the cleaning liquid is ejected at an angle of 10 degrees with respect to the center line.

  Further, when the support member 49 is in a predetermined position from the horizontal state to the first swing state described above, the shock absorber 10 that is suspended by the suspension 34 and that has a position in the transport direction and that extends vertically. On the other hand, each shower outlet 56 of the ejection pipe 54 is on one side in the radial direction of the shock absorber 10, and is directed from this one side to the gap between the lower end of the dust cover 20 and the cylinder 11. The cleaning liquid is ejected.

  Further, when the support member 49 is in a predetermined position between the horizontal state and the second swing state described above, the shock absorber 10 that is suspended by the suspension 34 and that is aligned with the position in the transport direction and extends vertically. On the other hand, each shower outlet 55 of the ejection pipe 53 is on the opposite side of the shock absorber 10 in the radial direction, and from this opposite side, it is directed to the gap between the lower end of the dust cover 20 and the cylinder 11 and in this direction. The cleaning liquid is ejected.

  According to the second embodiment described above, the switching mechanism 47 alternately raises and lowers both ends around the shower outlets 55 and 56 of the shower main body 52, so that the driving force of the motor 64 that is a driving source is small. And cost reduction.

  In addition to the above, as the switching mechanism 47, for example, the jet forming member that forms the shower jets 55 and 56 is rotated around the axis parallel to the moving axis of the conveyor 33 with respect to the jet pipes 53 and 54. It is also possible to use a device provided with a drive source that rotates the jet port forming member alternately forward and backward by a predetermined angle about this axis. If comprised in this way, the drive force of a drive source may be small and cost reduction can be achieved. Further, even if the switching mechanism 47 is not provided, that is, the support member 49 is fixed, it can be cleaned by adjusting the positions and number of the ejection ports 55 and 56. However, when the support member 49 is moved by the switching mechanism 47, the angle of the cleaning fluid with respect to the shock absorber can be switched, so that the cleaning efficiency can be improved.

  Further, as the cleaning fluid ejected from the shower unit 45, air or the like can be used in addition to cleaning liquid such as water and chemicals.

  Further, the plurality of shower outlets 55 are randomly arranged in at least one of the circumferential direction and the axial direction of the ejection pipe 53, or the plurality of shower outlets 56 are arranged at least in the circumferential direction and the axial direction of the ejection pipe 54. You may arrange | position at random in either one.

According to the embodiment described above, the outer cylinder, the rod projecting from the end of the outer cylinder, and the cylindrical section that covers a part of the rod and the outer cylinder, the cylindrical section and the outer cylinder, A shock absorber cleaning device comprising a cover that forms an annular gap therebetween, and an attachment portion that holds the shock absorber with the cover on the upper side and the outer tube on the lower side , A shower section for washing the shock absorber, the shower section being disposed below the shock absorber suspended from the mounting portion and spaced from the shock absorber, and the shower A shower outlet provided in the main body and for ejecting the cleaning fluid, and the shower fluid is ejected from below toward the outer peripheral surface of the outer cylinder or the annular gap of the shock absorber. An outlet was arranged. Therefore, since the shower unit ejects the cleaning fluid to the buffer suspended from the mounting unit, the buffer can always be cleaned with a clean cleaning fluid. Therefore, the cleaning efficiency can be improved.
Moreover, it is desirable that the shower outlet is arranged so as to incline from the lower side toward the shock absorber and eject the cleaning fluid.

In addition, by providing a switching mechanism that switches the inclined angle of the shower outlet with respect to the buffer during the ejection of the cleaning fluid, the angle of the cleaning fluid with respect to the buffer is switched, and the cleaning efficiency can be further improved.

Further, the shower jets, the shock absorber diameter that consists of at least two shower spout is spaced in both sides, it is possible to satisfactorily cleaning the buffer from both sides in the radial direction.

  In addition, since the mounting portion moves between at least two shower jet outlets that are spaced apart from each other, the mounting portion can be cleaned while moving the shock absorber, and a large number of shock absorbers can be washed continuously. Can do.

Further, the mounting portion is movable, the shower jets, along said movement axis on both sides of the movement axis of the mount portion in Rukoto provided with a plurality, also thoroughly cleaned while moving the damper And a large number of shock absorbers can be washed continuously and well.

  In addition, when the switching mechanism is one that alternately raises and lowers both ends with a fulcrum between at least two shower outlets of the shower body, the driving force of the driving source can be reduced, and the cost can be reduced.

  Moreover, when the said switching mechanism supports the end of the said shower main body, and raises and lowers the other end, the angle with respect to the buffer of a shower spout can be switched with a simple structure.

  Further, when the switching mechanism is provided at the shower outlet, the driving force of the driving source is small, and the cost can be reduced.

Further, the mounting portion, the shock absorber that the lower side is suspended the buffer to swing, can shake the buffer by the movement or the like of the cleaning liquid of the collision and the shock absorber, thus Can wash a wide range of shock absorbers.

An outer cylinder; a rod projecting from an end of the outer cylinder; and a cylinder portion that covers a portion of the rod and the outer cylinder, and an annular gap is provided between the cylinder portion and the outer cylinder. A method of cleaning a shock absorber comprising: a cover to be formed, the step of suspending the shock absorber in a state in which the cover is on the upper side and the outer cylinder is on the lower side on an attachment portion; and the suspended buffer Foreign matter adhering to the rod by the cleaning fluid jetting from the lower side toward the outer peripheral surface of the outer cylinder or the annular gap from the shower outlet to the container and passing through the annular gap And a step of washing off.
In addition, the shower spout is disposed so as to incline from the lower side toward the shock absorber and eject the cleaning fluid.
In addition, the inclined angle of the shower outlet with respect to the shock absorber is switched during the ejection of the cleaning fluid.
An outer cylinder; a rod projecting from an end of the outer cylinder; and a cylinder portion that covers a portion of the rod and the outer cylinder, and an annular gap is provided between the cylinder portion and the outer cylinder. and an assembly step of assembling the cover, the shock absorber consisting of forming a chemical conversion liquid applying step of applying a chemical conversion solution in the outer cylinder and before hear bar, a cleaning step of cleaning the buffer, the buffer A shock absorber manufacturing method comprising: a drying step for drying the shock absorber; and a coating step for coating the shock absorber. In the cleaning step, the cover is held on the upper side and the outer cylinder is held on the lower side. The cleaning fluid is ejected from the lower side toward the outer circumferential surface of the outer cylinder or the annular gap with respect to the shock absorber, and the rod attached to the rod by the cleaning fluid passing through the annular gap. Wash off the film forming solution. In this way, in the cleaning process, the cleaning liquid was attached to the rod by spraying and cleaning from the lower side to the outer circumferential surface of the outer cylinder or the annular gap between the outer cylinder and the cover cylinder part while changing the angle. since that will wash off chemical conversion solution may be washed off the chemical conversion liquid adhering to the outer peripheral surface of the rod within cover well.

Further, the washing step moves the buffer in a horizontal direction in a state where the shock absorber is suspended, and changes the angle from a shower outlet arranged along the moving direction on both the left and right sides below the moving shock absorber. Then, the shock absorber is washed with the washing fluid ejected. In this way, in the cleaning process, the cleaning liquid is moved in the horizontal direction in a state where the shock absorber is suspended, and is ejected from the shower spout arranged along the moving direction on the left and right sides of the lower side of the moving shock absorber. By washing the shock absorber according to the above, it is possible to wash while moving the shock absorber, and it is possible to wash a large number of shock absorbers continuously.
In the above embodiment, an example in which the shock absorber provided with the dust cover is washed is shown. However, an air suspension in which an air spring is provided on the outer periphery of the shock absorber may be used. The shape member (canister) is applicable.

10 Shock absorber 11 Cylinder (outer cylinder)
12 Rod 20 Dust cover (cover)
30 Cleaning device 33 Conveyor (mounting part)
34 Suspension (mounting part)
45 Shower 47 Switching mechanism 52 Shower body 55, 56 Shower outlet

Claims (11)

An outer cylinder,
A rod protruding from an end of the outer cylinder;
A cleaning device for a shock absorber comprising: a cover having a cylindrical portion covering a part of the rod and the outer cylinder ; and a cover forming an annular gap between the cylindrical portion and the outer cylinder ,
An attachment portion for suspending the shock absorber with the cover on the upper side and the outer cylinder on the lower side ;
A shower unit for washing the shock absorber,
The shower unit is a shower main body disposed on the lower side of the shock absorber suspended from the mounting portion and spaced from the shock absorber,
A shower spout provided in the shower main body and spouting a cleaning fluid;
The shock absorber cleaning device is characterized in that the shower spout is arranged so that the cleaning fluid is sprayed from the lower side toward the outer peripheral surface of the outer cylinder of the shock absorber or the annular gap . 2. The shock absorber cleaning device according to claim 1, wherein the shower spout is arranged so as to incline from the lower side toward the shock absorber so as to eject the cleaning fluid . Shock absorber cleaning apparatus according to claim 1 or 2, characterized in that it comprises a switching mechanism for switching the inclined angle with respect to the shock absorber of the shower spout during ejection of the cleaning fluid. The shower jets, cleaning of damper according to any one of claims 1 to 3, characterized in that it consists of at least two shower spout which is spaced radially opposite sides of the damper apparatus. The said attachment part can be moved , The washing | cleaning of the shock absorber of Claim 4 with which the said shower jet nozzle is provided with two or more along the said movement axis | shaft on both sides of the movement axis | shaft of the said attachment part. apparatus. The mounting portion, the damper lower side shock absorber cleaning apparatus of any one of claims 1 to 5, characterized in that suspending the damper to swing the. An outer cylinder, a rod projecting from an end of the outer cylinder, and a cylinder part that covers a part of the rod and the outer cylinder, and an annular gap is formed between the cylinder part and the outer cylinder A shock absorber cleaning method comprising: a cover;
A step of suspending the shock absorber in a state where the cover is on the upper side and the outer cylinder is on the lower side on the mounting portion;
With respect to the suspended shock absorber, the cleaning fluid is ejected from the lower side toward the outer peripheral surface of the outer cylinder or the annular gap from the shower outlet, and the washing fluid passes through the annular gap. And a step of washing away foreign matter adhering to the rod. 8. The shock absorber cleaning method according to claim 7, wherein the shower spout is disposed so as to incline from below toward the shock absorber so as to eject the cleaning fluid. 9. The shock absorber cleaning method according to claim 8, wherein an inclined angle of the shower outlet with respect to the shock absorber is switched during the ejection of the cleaning fluid. An outer cylinder, a rod projecting from an end of the outer cylinder, and a cylinder part that covers a part of the rod and the outer cylinder, and an annular gap is formed between the cylinder part and the outer cylinder An assembly process for assembling a shock absorber comprising: a cover;
A film forming solution applying step for applying a film forming solution to the outer cylinder and the cover;
A washing step for washing the buffer;
A drying step of drying the buffer;
A coating process for coating the shock absorber, and a shock absorber manufacturing method comprising:
In the washing step,
Wherein said cover relative to said shock absorber is suspended while the lower the outer cylinder to the upper side, and releasing washing fluid from the lower side to the outer peripheral surface or the annular gap of the outer cylinder A method of manufacturing a shock absorber, wherein the film-forming solution adhering to the rod is washed away by the cleaning fluid passing through an annular gap . In the washing step, the shock absorber is suspended and moved in the horizontal direction, and ejected while changing the angle from the shower outlets disposed along the moving direction on the left and right sides of the lower side of the moving shock absorber. The method of manufacturing a shock absorber according to claim 10, wherein the shock absorber is cleaned with a cleaning fluid.

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