Hub transfer printing device

Abstract

The hub transfer printing device comprises a bottom rack, a horizontal fixing plate is fixed from the left portion to the middle of the top face of a top plate of the bottom rack, a transverse moving mechanism is fixed to the top face of the horizontal fixing plate, a connecting block is fixed to the top face of a moving block of the transverse moving mechanism, and a horizontal fixing plate is fixed to the top face of the connecting block; the middle of the top face of the horizontal fixing plate is movably connected with a main rotating shaft through a hinge shaft, an upper placing horizontal plate is fixed to the top of the main rotating shaft, and a hub to be machined is installed on the upper placing horizontal plate. A middle supporting frame is fixed to the middle of the top face of the horizontal fixing plate, two gooseneck pipes are installed on a top plate of the middle supporting frame, infrared sensors are fixed to the bottom ends of the gooseneck pipes, and the sensing ends of the two infrared sensors correspond to spokes of a hub. According to the hub positioning device, a hub can be automatically rotated and positioned, the position of the hub can be automatically adjusted to an accurate position, follow-up transfer printing accuracy is guaranteed, and machining quality is guaranteed.

Description

Technical field:

[0001] The present invention relates to the technical field related to wheel hub coating equipment, and more specifically to a wheel hub pad printing device. Background technology:

[0002] Existing wheel hubs, such as those used in existing electric vehicles, generally need to print trademarks or other logos or patterns on the outer end surfaces of the spokes of the wheel hubs. The spokes are relatively wide, and when printing patterns on them, it is necessary to ensure that the patterns can be accurately printed at the corresponding positions of the spokes of each wheel hub. However, the existing wheel hubs cannot be accurately positioned and need to be manually rotated to ensure the position alignment. The adjustment is very troublesome, so that the position of the pattern on the spokes of each wheel hub will deviate, affecting the processing quality. Summary of the invention:

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a wheel hub pad printing device, which can automatically rotate and position the wheel hub, so that it can automatically adjust its position accurately, ensure the accuracy of subsequent pad printing, and ensure the processing quality.

[0004] The solution of the present invention to solve the technical problem is:

[0005] A wheel hub pad printing device comprises a bottom stand, a horizontal fixing plate is fixed from the left part to the middle part of the top surface of the top plate of the bottom stand, a lateral moving mechanism is fixed on the top surface of the horizontal fixing plate, a connecting block is fixed on the top surface of the moving block of the lateral moving mechanism, a horizontal fixing plate is fixed on the top surface of the connecting block, the middle part of the top surface of the horizontal fixing plate is movably connected to the main rotating shaft through a hinge shaft, an upper placing horizontal plate is fixed on the top of the main rotating shaft, and a wheel hub to be processed is installed on the upper placing horizontal plate;

[0006] An intermediate support frame is fixed in the middle of the top surface of the horizontal fixed plate, two gooseneck tubes are installed on the top plate of the intermediate support frame, infrared sensors are fixed at the bottom ends of the gooseneck tubes, and the sensing ends of the two infrared sensors correspond to the spokes of the wheel hub;

[0007] A pad printing mainframe is fixed on the top surface of the top plate of the bottom frame at the right end of the horizontal fixed plate, a right support frame is fixed on the right top surface of the top plate of the pad printing mainframe, a top transverse plate is fixed on the top surface of the right support frame, and the bottom surface of the left end of the top transverse plate is fixed on the top surface of the top plate of the middle support frame;

[0008] An upper horizontal moving mechanism is fixed to the bottom surface of the top horizontal plate, a vertical shell is fixed to the lower part of the main moving block of the upper horizontal moving mechanism, a lifting cylinder is fixed to the top surface of the bottom plate of the vertical shell, and the bottom end of the push rod of the lifting cylinder extends out of the bottom plate of the vertical shell and is fixed with a pad printing silicone head.

[0009] The lateral movement mechanism includes end fixing plates fixed on the left and right parts of the top surface of the horizontal fixing plate, and the two ends of the lateral movement screw are movably connected to the two end fixing plates through bearings. A movement adjustment servo motor is fixed on the outer wall of one of the end fixing plates. The movement adjustment servo motor drives the corresponding lateral movement screw to rotate, and the moving block is screwed on the lateral movement screw.

[0010] A guide rod is provided between the front and rear parts of the two end fixing plates, the two ends of the guide rod are fixed on the two end fixing plates, and the guide rod is inserted into the corresponding transverse guide through hole of the moving block.

[0011] A raised sensing block is fixed in the middle of the bottom surface of the moving block, and vertically connected screw through holes are formed on the left, middle and right parts of the horizontal fixed plate. The first proximity switch, the second proximity switch and the third proximity switch are respectively screwed in the vertically connected screw through holes on the left, middle and right parts, and the top sensing ends of the first proximity switch, the second proximity switch and the third proximity switch correspond to the raised sensing block;

[0012] A corresponding lower through hole is formed on the top plate of the bottom stand just below the vertically connected screw through hole.

[0013] The intermediate support frame is located directly above the second proximity switch, and two screw-through holes are formed on the top plate of the intermediate support frame. The screw-connected sleeve is screwed in the screw-connected through holes, a gooseneck tube is welded and fixed to the bottom end of the screw-connected sleeve, a connecting nut is fixed to the bottom end of the gooseneck tube, the infrared sensor is screwed in the connecting nut, and the bottom sensing end of the infrared sensor extends out of the bottom end of the connecting nut, the middle screw-connected through hole of the connecting nut is connected to the middle through hole of the gooseneck tube, and the middle through hole of the gooseneck tube is connected to the corresponding screw-connected through hole on the top plate of the intermediate support frame.

[0014] The upper lateral moving mechanism includes upper fixed plates fixed to the left and right parts of the bottom surface of the top lateral plate, and both ends of the upper lateral adjustment screw are movably connected to the two upper fixed plates through bearings. An upper moving servo motor is fixed to the outer wall of one of the upper fixed plates, and the upper moving servo motor drives the upper lateral adjustment screw to rotate. An upper guide rail extending left and right is fixed to the bottom surface of the top lateral plate, and the main moving block is screwed on the upper lateral adjustment screw.

[0015] A transverse guide strip is fixed on the bottom surface of the top transverse plate, an upper guide slider is fixed on the top surface of the main moving block, and the transverse guide strip is inserted into an upper guide slot formed in the middle of the top surface of the upper guide slider.

[0016] Side protective plates are fixed to the front and rear parts of the bottom surface of the top horizontal plate, and a middle long adjustment slot extending left and right is formed in the middle part of the side protective plate on one side. A side sensing block is fixed to the front side wall or the rear side wall of the vertical shell, and a side proximity switch is installed on the middle long adjustment slot, and the sensing end of the side proximity switch corresponds to the side sensing block.

[0017] The side proximity switch is located above and to the right of the third proximity switch.

[0018] The threaded portion at the outer end of the side proximity switch extends out of the outer side of the corresponding middle long adjustment slot and is threadedly connected to a limit nut, an inner annular sleeve is formed at the inner end of the limit nut, a clamping plate is inserted and sleeved on the side proximity switch, an anti-slip sheet is fixed on the inner end surface of the clamping plate, the inner end of the side proximity switch extends out of the inner side wall of the corresponding middle long adjustment slot, a radially extending edge is formed on the outer side wall, and the corresponding side protection plate is clamped between the radially extending edge and the anti-slip sheet of the clamping plate;

[0019] An outer annular sleeve extending outward is formed in the middle of the outer side wall of the clamping plate. The clamping spring is inserted into the outer end of the side proximity switch, one end of which is applied to the inner end surface of the limit nut and the other end is applied to the outer end surface of the clamping plate. The clamping spring is inserted into the outer annular sleeve and the inner annular sleeve. The inner end of the inner annular sleeve is inserted into the outer end of the outer annular sleeve, and the inner end outer side wall of the inner annular sleeve is close to or close to the outer end inner side wall of the outer annular sleeve.

[0020] A rotation adjustment servo motor is fixed to the bottom surface of the horizontal fixed plate, the top end of the output shaft of the rotation adjustment servo motor extends out of the top surface of the horizontal fixed plate and is fixed with a driving gear, a transmission gear is fixed on the outer side wall of the main shaft, and the driving gear is meshed with the transmission gear;

[0021] An annular guide rail is fixed to the edge of the top surface of the horizontal fixed plate, an annular support block is fixed to the bottom surface of the edge on which the horizontal plate is placed, an annular guide portion is fixed to the bottom surface of the annular support block, an annular groove is formed in the middle of the top surface of the annular guide rail, the bottom surface of the annular groove is an annular wall surface with an arc-shaped cross section, the bottom of the annular guide portion is inserted into the annular groove, and the bottom surface of the annular guide portion is an annular wall surface with an arc-shaped cross section, which matches the bottom surface of the annular groove;

[0022] A wear-resistant layer is fixed on the bottom surface of the annular groove and is in close contact with the bottom surface of the annular guide portion.

[0023] An annular adsorption block is fixed to the bottom surface of the outer edge of the horizontal plate placed thereon, and a plurality of positioning cylinders are fixed to the bottom surface of the outer edge of the horizontal fixed plate. All positioning cylinders are evenly distributed on the horizontal fixed plate with the central axis of the horizontal fixed plate as the center. The top end of the push rod of the positioning cylinder extends out of the top surface of the horizontal fixed plate and is fixed with a strong magnet block. The strong magnet block is pressed against the bottom surface of the annular adsorption block and is adsorbed and fixed.

[0024] The top end of the adjusting screw extends out of the center screw through hole and is fixed with a conical positioning block. The bottom end of the adjusting screw extends out of the center screw through hole and is screwed with a locking nut. The top surface of the locking nut is pressed against the bottom surface of the top plate of the middle support frame, and the outer diameter of the top end of the conical positioning block is smaller than the outer diameter of the bottom end. The wheel hub to be processed is placed on the top surface of the top plate of the placing frame, and the outer wall of the wheel rim at the bottom of the wheel hub is close to or close to the inner side wall of the upper annular limiting ring, and the conical wall surface of the conical positioning block is pressed against the conical wall surface formed on the inner side wall of the bottom end of the center through hole of the hub of the wheel hub.

[0025] A plurality of clamping and positioning rotating cylinders are fixed to the bottom surface of the edge of the placement rack, and all the clamping and positioning rotating cylinders are evenly distributed on the top plate of the placement rack with the central axis of the top plate of the placement rack as the center, the top end of the push rod of the clamping and positioning rotating cylinder extends out of the top surface of the top plate of the placement rack and is fixed with an upper clamping rod, and an anti-skid clamping block is fixed to the bottom surface of the end of the upper clamping rod, and the bottom surface of the anti-skid clamping block presses against the top surface of the rim of the bottom of the rim of the wheel hub.

[0026] The outstanding effects of the present invention are:

[0027] It can automatically rotate and position the wheel hub, so that it can automatically adjust the position accurately, ensure the accuracy of subsequent pad printing, and ensure the processing quality. Description of the drawings:

[0028] Figure 1 It is a partial structural schematic diagram of the present invention;

[0029] Figure 2 yes Figure 1 A partial enlarged view of the first location;

[0030] Figure 3 yes Figure 1 A partial enlarged view of the second location;

[0031] Figure 4 yes Figure 1 A partial enlarged view of the third location;

[0032] Figure 5 yes Figure 1 A partial enlarged view of the fourth location;

[0033] Figure 6 This is a partial top view of the ink tray stand;

[0034] Figure 7It is a schematic diagram of the local structure at the gooseneck;

[0035] Figure 8 It is a schematic diagram of the local structure of the side proximity switch;

[0036] Fig. 9 yes Figure 8 A partial enlarged view of

[0037] Fig.10 This is a simplified diagram of the induction at the spokes of the wheel hub. Specific implementation method:

[0038] For example, see Figures 1 to 10 As shown, a wheel hub pad printing device includes a bottom stand 10, a horizontal fixing plate 11 is fixed from the left to the middle of the top surface of the top plate of the bottom stand 10, a lateral moving mechanism 20 is fixed on the top surface of the horizontal fixing plate 11, and the lateral moving mechanism 20 includes end fixing plates 26 fixed on the left and right parts of the top surface of the horizontal fixing plate 11, and both ends of the lateral moving screw 27 are movably connected to the two end fixing plates 26 through bearings, and a moving adjustment servo motor 28 is fixed on the outer wall of one of the end fixing plates 26, and the output shaft of the moving adjustment servo motor 28 is a spline shaft, which is inserted into the spline hole at one end of the lateral moving screw 27 and drives the corresponding lateral moving screw 27 to rotate, and the moving block 21 is screwed on the lateral moving screw 27.

[0039] A guide rod 261 is provided between the front and rear parts of the two end fixing plates 26 . Both ends of the guide rod 261 are fixed on the two end fixing plates 26 . The guide rod 261 is inserted into the corresponding transverse guide through holes of the moving block 21 .

[0040] A connecting block 22 is fixed on the top surface of the moving block 21, a horizontal fixing plate 23 is fixed on the top surface of the connecting block 22, a main rotating shaft 24 is movably connected to the middle of the top surface of the horizontal fixing plate 23 through a hinge shaft, an upper horizontal plate 25 is fixed on the top of the main rotating shaft 24, and the wheel hub 100 to be processed is installed on the upper horizontal plate 25;

[0041] An intermediate support frame 30 is fixed to the middle of the top surface of the horizontal fixing plate 23, two gooseneck tubes 31 are installed on the top plate of the intermediate support frame 30, and infrared sensors 32 are fixed to the bottom ends of the gooseneck tubes 31, and the sensing ends of the two infrared sensors 32 correspond to the spokes 101 of the wheel hub 100;

[0042] A pad printing host 40 is fixed on the top surface of the top plate of the bottom stand 10 at the right end of the horizontal fixed plate 23, a right support frame 41 is fixed on the right top surface of the top plate of the pad printing host 40, a top transverse plate 42 is fixed on the top surface of the right support frame 41, and the bottom surface of the left end of the top transverse plate 42 is fixed on the top surface of the top plate of the middle support frame 30;

[0043] An upper lateral moving mechanism 50 is fixed to the bottom surface of the top lateral plate 42, and the upper lateral moving mechanism 50 includes upper fixed plates 55 fixed to the left and right parts of the bottom surface of the top lateral plate 42. Both ends of the upper lateral adjustment screw 56 are movably connected to the two upper fixed plates 55 through bearings. An upper moving servo motor 57 is fixed to the outer wall of one of the upper fixed plates 55. The output shaft of the upper moving servo motor 57 is a spline shaft, which is inserted into the spline hole at one end of the upper lateral adjustment screw 56 and drives the upper lateral adjustment screw 56 to rotate. An upper guide rail 421 extending left and right is fixed to the bottom surface of the top lateral plate 42, and the main moving block 51 is screwed on the upper lateral adjustment screw 56.

[0044] A transverse guide strip 421 is fixed to the bottom surface of the top transverse plate 42 , an upper guide slider 511 is fixed to the top surface of the main moving block 51 , and the transverse guide strip 421 is inserted into an upper guide slot formed in the middle of the top surface of the upper guide slider 511 .

[0045] A vertical shell 52 is fixed to the lower part of the main moving block 51 , a lifting cylinder 53 is fixed to the top surface of the bottom plate of the vertical shell 52 , and the bottom end of the push rod of the lifting cylinder 53 extends out of the bottom plate of the vertical shell 52 and is fixed with a pad printing silicone head 54 .

[0046] Furthermore, a raised sensing block 211 is fixed to the middle of the bottom surface of the moving block 21, and vertically connected screw-connected through holes are formed on the left, middle and right parts of the horizontal fixed plate 11, and the first proximity switch 1, the second proximity switch 2 and the third proximity switch 3 are screwed into the vertically connected screw-connected through holes on the left, middle and right parts respectively, and the top sensing ends of the first proximity switch 1, the second proximity switch 2 and the third proximity switch 3 correspond to the raised sensing block 211;

[0047] A corresponding lower through hole is formed on the top plate of the bottom stand 10 just below the vertically connected screw through hole.

[0048] The intermediate support frame 30 is located directly above the second proximity switch 2. Two screw-through holes are formed on the top plate of the intermediate support frame 30. The screw-connected sleeve 33 is screwed in the screw-connected through holes. The bottom end of the screw-connected sleeve 33 is welded and fixed with a gooseneck tube 31. The bottom end of the gooseneck tube 31 is fixed with a connecting nut 34. The infrared sensor 32 is screwed in the connecting nut 34. The bottom sensing end of the infrared sensor 32 extends out of the bottom end of the connecting nut 34. The middle screw-connected through hole of the connecting nut 34 is connected to the middle through hole of the gooseneck tube 31. The middle through hole of the gooseneck tube 31 is connected to the corresponding screw-connected through hole on the top plate of the intermediate support frame 30. The electrical connection line of the infrared sensor 32 can extend from the top plate of the intermediate support frame 30 along the gooseneck tube 31 and be electrically connected to the control host.

[0049] Furthermore, side protective plates 43 are fixed to the front and rear parts of the bottom surface of the top horizontal plate 42, and a middle long adjustment slot 431 extending left and right is formed in the middle part of the side protective plate 43 on one side, and a side sensing block 521 is fixed to the front side wall or the rear side wall of the vertical shell 52, and a side proximity switch 4 is installed on the middle long adjustment slot 431, and the sensing end of the side proximity switch 4 corresponds to the side sensing block 521.

[0050] Furthermore, the side proximity switch 4 is located above and on the right side of the third proximity switch 3 .

[0051] Furthermore, the threaded portion at the outer end of the side proximity switch 4 extends out of the outer side of the corresponding middle long adjustment slot 431 and is threadedly connected to the limit nut 44, the inner end of the limit nut 44 is formed with an inner annular sleeve 441, a clamping plate 45 is inserted and sleeved on the side proximity switch 4, an anti-slip sheet 451 is fixed on the inner end surface of the clamping plate 45, the inner end of the side proximity switch 4 extends out of the inner side wall surface of the corresponding middle long adjustment slot 431, and a radially extending edge 401 is formed on the outer side wall thereof, and the corresponding side protection plate 43 is clamped between the radially extending edge 401 and the anti-slip sheet 451 of the clamping plate 45;

[0052] An outer annular sleeve 452 extending outward is formed in the middle of the outer side wall of the clamping plate 45, and a clamping spring 453 is inserted into the outer end of the side proximity switch 4, one end of which is applied to the inner end surface of the limit nut 44, and the other end is applied to the outer end surface of the clamping plate 45. The clamping spring 453 is inserted into the outer annular sleeve 452 and the inner annular sleeve 441, and the inner end of the inner annular sleeve 441 is inserted into the outer end of the outer annular sleeve 452, and the inner end outer side wall of the inner annular sleeve 441 is close to or close to the outer end inner side wall of the outer annular sleeve 452.

[0053] The above structure makes it possible for when the position of the side proximity switch 4 needs to be adjusted, it is only necessary to pull the clamping plate 45 outward to compress the clamping spring 453. At this time, the corresponding side protective plate 43 is not clamped between the radially extending edge 401 and the anti-slip sheet 451 of the clamping plate 45, and it can be adjusted left and right along the middle elongated adjustment groove 431, so that its position corresponds to the position to which the subsequent vertical shell 52 needs to move, thereby ensuring that the subsequent moving position of the vertical shell 52 is accurate.

[0054] Furthermore, a rotation adjustment servo motor 29 is fixed to the bottom surface of the horizontal fixing plate 23, the top end of the output shaft of the rotation adjustment servo motor 29 extends out of the top surface of the horizontal fixing plate 23 and is fixed with a driving gear 291, and a transmission gear 241 is fixed on the outer wall of the main rotating shaft 24, and the driving gear 291 is meshed with the transmission gear 241;

[0055] An annular guide rail 231 is fixed to the edge of the top surface of the horizontal fixed plate 23, an annular support block 251 is fixed to the bottom surface of the edge on which the horizontal plate 25 is placed, an annular guide portion 252 is fixed to the bottom surface of the annular support block 251, an annular groove is formed in the middle of the top surface of the annular guide rail 231, the bottom surface of the annular groove is an annular wall surface with an arc-shaped cross section, the bottom of the annular guide portion 252 is inserted into the annular groove, the bottom surface of the annular guide portion 252 is an annular wall surface with an arc-shaped cross section, and it matches the bottom surface of the annular groove;

[0056] A wear-resistant layer is fixed to the bottom surface of the annular groove, which is in close contact with the bottom surface of the annular guide portion 252 .

[0057] Furthermore, an annular adsorption block 254 is fixed to the bottom surface of the outer edge of the horizontal plate 25, and a plurality of positioning cylinders 233 (six to eight in this embodiment) are fixed to the bottom surface of the outer edge of the horizontal fixed plate 23. All positioning cylinders 233 are evenly distributed on the horizontal fixed plate 23 with the central axis of the horizontal fixed plate 23 as the center. The top end of the push rod of the positioning cylinder 233 extends out of the top surface of the horizontal fixed plate 23 and is fixed with a strong magnet block 234. The strong magnet block 234 is pressed against the bottom surface of the annular adsorption block 254 and is adsorbed and fixed.

[0058] Further, a placing frame 255 is fixed in the middle of the top surface of the upper horizontal plate 25, an upper annular limiting ring 256 is fixed to the edge of the top surface of the top plate of the placing frame 255, an intermediate support frame 257 is fixed in the middle of the top surface of the top plate of the placing frame 255, a central screw-connected through hole is formed in the middle of the top surface of the top plate of the intermediate support frame 257, an adjusting screw 258 is screwed in the central screw-connected through hole, the top end of the adjusting screw 258 extends out of the central screw-connected through hole and is fixed with a conical positioning block 259, and the bottom end of the adjusting screw 258 extends out of the central screw-connected through hole. The bottom surface of the top plate of the intermediate support frame 257 is screwed with a locking nut, and the top surface of the locking nut is pressed against the bottom surface of the top plate of the intermediate support frame 257. The top outer diameter of the conical positioning block 259 is smaller than the bottom outer diameter. The wheel hub 100 to be processed is placed on the top surface of the top plate of the placement frame 255. The outer wall of the rim of the bottom of the wheel hub 100 is close to or close to the inner wall of the annular limiting ring 256. The conical wall surface of the conical positioning block 259 is pressed against the conical wall surface formed on the bottom inner wall of the central through hole of the hub portion of the wheel hub 100.

[0059] A plurality of clamping and positioning rotating cylinders 6 (six to eight in this embodiment) are fixed to the bottom surface of the edge of the placement rack 255. All the clamping and positioning rotating cylinders 6 are evenly distributed on the top plate of the placement rack 255 with the central axis of the top plate of the placement rack 255 as the center. The top end of the push rod of the clamping and positioning rotating cylinder 6 extends out of the top surface of the top plate of the placement rack 255 and is fixed with an upper clamping rod 7. An anti-slip clamping block 8 is fixed to the bottom surface of the end of the upper clamping rod 7. The bottom surface of the anti-slip clamping block 8 is pressed against the top surface of the rim of the bottom of the rim of the wheel hub 100.

[0060] Further, a left transverse support frame 46 is fixed on the left side wall of the middle part of the right support frame 41, a transverse push cylinder 47 is fixed on the right side wall of the middle fixed plate of the left transverse support frame 46, the end of the push rod of the transverse push cylinder 47 extends out of the left side wall of the middle fixed plate of the left transverse support frame 46 and is fixed with a push block 48, a right transverse guide rod 481 is fixed on the right side wall of the push block 48, and the right transverse guide rod 481 is inserted into the transverse guide through hole formed on the middle fixed plate of the left transverse support frame 46;

[0061] The front and rear portions of the left side wall of the pushing block 48 are both formed with extension portions 482, the vertical support plate 49 is located below the pushing block 48, the front and rear portions of the top surface of the vertical support plate 49 are both formed with connection portions 491, the connection portion 491 is located between the two extension portions 482 and is movably connected to the corresponding extension portion 482 through a hinge shaft, a flexible scraper plate 492 is fixed to the lower portion of the right side wall of the vertical support plate 49, the bottom end of the flexible scraper plate 492 extends out of the bottom end of the vertical support plate 49, the front and rear bottom surfaces of the middle portion of the pushing block 48 are both fixed with limit plates 483, one end of two springs 484 is fixed to the left side wall of the corresponding limit plate 483, and the other end is fixed to the right side wall of the front or rear portion of the vertical support plate 49;

[0062] Two ink inlet screw-connected through holes are formed on the push block 48 at the right side of the vertical support plate 49, and the ink connector is screwed on the corresponding ink inlet screw-connected through holes. An ink transition housing 485 extending forward and backward is fixed to the bottom surface of the push block 48, and the inner cavity of the ink transition housing 485 is communicated with the two ink inlet screw-connected through holes. A drainage strip 486 extending forward and backward is fixed to the bottom surface of the bottom plate of the ink transition housing 485, and a liquid outlet groove extending forward and backward is formed in the middle of the drainage strip 486, and the liquid outlet groove is communicated with the inner cavity of the ink transition housing 485, and the width between the left and right side walls of the liquid outlet groove is smaller than the width between the left and right side walls of the inner cavity of the ink transition housing 485. The ink connector is connected to the control valve of the ink delivery pump through a connecting pipe, and the ink outlet is controlled by the operation of the control valve.

[0063] Furthermore, an ink tray rack 80 is fixed to the top surface of the top plate of the pad printing host 40, a placement groove 81 is formed in the middle of the top surface of the ink tray rack 80, a pattern steel plate 82 is fixed to the bottom surface of the placement groove 81, a pattern groove is formed on the middle top surface of the pattern steel plate 82, a blanking hole is formed on the edge bottom surface of the placement groove 81, the blanking hole is communicated with the lower inner cavity 83 of the ink tray rack 80, a drainage connector is threadedly connected in the threaded through hole formed on the lower right side wall of the ink tray rack 80, and the bottom end of the flexible scraper 492 is pressed against the top surface of the pattern steel plate 82, and the bottom end of the drainage strip 486 faces the top surface of the pattern steel plate 82.

[0064] All cylinders in this embodiment are connected to the control valve of the pneumatic system through connecting pipes. The pneumatic system is composed of components such as an air pump and a control valve. It is a conventional structure and will not be described in detail here. All electrical equipment is electrically connected to the control host through electrical connecting lines and is controlled and operated by the control host. It is a conventional structure and will not be described in detail here.

[0065] When this embodiment is used, the moving block 21 is first located at the left end, and the sensing end of the first proximity switch 1 senses the raised sensing block 211. At this time, it is the loading position. At this time, the wheel hub 100 is placed on the top surface of the top plate of the placement rack 255, and the outer wall of the rim of the bottom of the wheel hub 100 is close to or close to the inner wall of the upper annular limit ring 256, and the conical wall surface of the conical positioning block 259 is pressed against the conical wall surface formed on the bottom inner wall of the central through hole of the hub of the wheel hub 100; then, the push rod of the clamping and positioning rotating cylinder 6 is rotated and lowered, so that the bottom surface of the anti-slip clamping block 8 is pressed against the top surface of the rim of the bottom of the rim of the wheel hub 100 to achieve its fixation (wherein, this structure is only suitable for the processing and use of the same batch of wheel hubs 100 of the same model. When the specifications change, the placement rack 255 and all its components need to be replaced with components that match the wheel hub 100 of the specifications that need to be processed later before they can be installed and used again).

[0066] Then, by moving and adjusting the servo motor 28, the moving block 21 moves to the right until the sensing end of the second proximity card 2 senses the raised sensing block 211. At this time, it means that it has moved to the position correction station. At this time, the sensing ends of the two infrared sensors 32 sense the corresponding points on the front and rear sides of the spokes of the hub 100 where the printing is required (such as Figure 8 As shown), when processing the first one, it is necessary to manually adjust the two goosenecks 31 to ensure that the sensing ends of the two infrared sensors 32 sense the corresponding point on the front and rear sides of one of the spokes of the hub 100 where the printing is required (the gooseneck 31 only needs to be manually bent to be adjusted, and the adjustment is convenient). In the subsequent processing, it is only necessary to rotate and adjust the servo motor 29 to realize the rotation of the hub 100. Only one corresponding point on the front and rear sides of the place where the printing is required for one of the spokes is sensed by the sensing ends of the two infrared sensors 32, indicating that it has moved into place (because the spokes of the hub 100 are evenly distributed, therefore, it only needs one spoke to be aligned, and the pattern can be printed on this spoke later). Then, the push rods of all the positioning cylinders 233 push, so that the strong magnet block 234 is pressed against the bottom surface of the annular adsorption block 254 and adsorbed and fixed. At this time, the hub 100 is fixed and will not rotate anymore.

[0067] Then, by moving and adjusting the servo motor 28, the moving block 21 moves to the right to the third proximity switch 3, so that the sensing end of the third proximity switch 3 senses the raised sensing block 211. At this time, the wheel hub 100 reaches the pad printing position, and then, by pushing the push rod of the cylinder 47 laterally, the liquid outlet groove discharges the ink and coats the top surface of the pattern steel plate 82 with it. Then, the push rod of the cylinder 47 is pushed laterally back to its position, and the bottom end of the flexible scraper 492 is moved to the right along the top surface of the pattern steel plate 82, so that the ink on the top surface of the pattern steel plate 82 is scraped off, leaving only ink in the pattern groove. Then, by moving the servo motor 57 upward, the vertical shell 52 moves to the right until its side sensing block 521 is sensed by the right end limit proximity switch fixed at the right end of the side protective plate 43. (The sensing end of the right-end limit proximity switch extends out of the inner wall of the side protection plate 43, and the outer end of the right-end limit proximity switch extends out of the outer wall of the side protection plate 43). At this time, it means that it has moved into place, and is pushed by the push rod of the lifting cylinder 53, so that the pad printing silicone head 54 is lowered and pressed against the pattern groove, and the ink inside is printed onto the bottom end surface of the pad printing silicone head 54. Then, the push rod of the lifting cylinder 53 is retracted, and then the upper moving servo motor 57 is operated to move the vertical shell 52 to the left until the side sensing block 521 is sensed by the sensing end of the side proximity switch 4, indicating that the pad printing silicone head 54 has moved into place. Then, the push rod of the lifting cylinder 53 is pushed to lower the pad printing silicone head 54, and the pattern on its bottom end surface is pad printed onto the top surface of the corresponding position of the corresponding spoke of the wheel hub 100, completing pad printing.

[0068] Then, all the parts are returned to their positions, the wheel hub 100 is moved to the loading position, taken out, and then the new wheel hub 100 is installed as before, and subsequent processing can be carried out. The processing is convenient and the use effect is good.

Claims

1. A wheel hub pad printing device, comprising a bottom stand (10), characterized in that: A horizontal fixing plate (11) is fixed from the left part to the middle part of the top surface of the top plate of the bottom platform (10); a lateral moving mechanism (20) is fixed on the top surface of the horizontal fixing plate (11); a connecting block (22) is fixed on the top surface of the moving block (21) of the lateral moving mechanism (20); a horizontal fixing plate (23) is fixed on the top surface of the connecting block (22); the middle part of the top surface of the horizontal fixing plate (23) is movably connected to the main rotating shaft (24) via a hinge shaft; an upper placing horizontal plate (25) is fixed on the top of the main rotating shaft (24); and a wheel hub (100) to be processed is installed on the upper placing horizontal plate (25); An intermediate support frame (30) is fixed in the middle of the top surface of the horizontal fixed plate (23), two gooseneck tubes (31) are installed on the top plate of the intermediate support frame (30), infrared sensors (32) are fixed at the bottom ends of the gooseneck tubes (31), and the sensing ends of the two infrared sensors (32) correspond to the spokes (101) of the wheel hub (100); A pad printing mainframe (40) is fixed on the top surface of the top plate of the bottom stand (10) at the right end of the horizontal fixed plate (23), a right support frame (41) is fixed on the right top surface of the top plate of the pad printing mainframe (40), a top transverse plate (42) is fixed on the top surface of the right support frame (41), and the bottom surface of the left end of the top transverse plate (42) is fixed on the top surface of the top plate of the middle support frame (30); An upper lateral moving mechanism (50) is fixed to the bottom surface of the top lateral plate (42); a vertical shell (52) is fixed to the lower part of the main moving block (51) of the upper lateral moving mechanism (50); a lifting cylinder (53) is fixed to the top surface of the bottom plate of the vertical shell (52); the bottom end of the push rod of the lifting cylinder (53) extends out of the bottom plate of the vertical shell (52) and is fixed to a pad printing silicone head (54).

2. A wheel hub pad printing device according to claim 1, characterized in that: The lateral movement mechanism (20) comprises end fixing plates (26) fixed to the left and right parts of the top surface of the horizontal fixing plate (11), and the two ends of the lateral movement screw (27) are movably connected to the two end fixing plates (26) through bearings. A movement adjustment servo motor (28) is fixed to the outer wall of one of the end fixing plates (26), and the movement adjustment servo motor (28) drives the corresponding lateral movement screw (27) to rotate. The moving block (21) is screwed onto the lateral movement screw (27).

3. A wheel hub pad printing device according to claim 2, characterized in that: A guide rod (261) is provided between the front and rear parts of the two end fixing plates (26), the two ends of the guide rod (261) are fixed on the two end fixing plates (26), and the guide rod (261) is inserted into the corresponding transverse guide through hole of the moving block (21).

4. The wheel hub pad printing device according to claim 2, characterized in that: A raised sensing block (211) is fixed in the middle of the bottom surface of the moving block (21), and vertically connected screw-connected through holes are formed on the left, middle and right parts of the horizontal fixed plate (11), and the first proximity switch (1), the second proximity switch (2) and the third proximity switch (3) are screwed in the vertically connected screw-connected through holes on the left, middle and right parts, respectively, and the top sensing ends of the first proximity switch (1), the second proximity switch (2) and the third proximity switch (3) correspond to the raised sensing block (211); A corresponding lower through hole is formed on the top plate of the bottom stand (10) directly below the vertically connected screw through hole.

5. A wheel hub pad printing device according to claim 4, characterized in that: The intermediate support frame (30) is located directly above the second proximity switch (2), and two screw-connected through holes are formed on the top plate of the intermediate support frame (30), and the screw-connected sleeve (33) is screwed in the screw-connected through holes. A gooseneck tube (31) is welded and fixed to the bottom end of the screw-connected sleeve (33), and a connecting nut (34) is fixed to the bottom end of the gooseneck tube (31). The infrared sensor (32) is screwed in the connecting nut (34), and the bottom sensing end of the infrared sensor (32) extends out of the bottom end of the connecting nut (34). The middle screw-connected through hole of the connecting nut (34) is communicated with the middle through hole of the gooseneck tube (31), and the middle through hole of the gooseneck tube (31) is communicated with the corresponding screw-connected through hole on the top plate of the intermediate support frame (30).

6. The wheel hub pad printing device according to claim 1, characterized in that: The upper transverse moving mechanism (50) comprises upper fixed plates (55) fixed to the left and right parts of the bottom surface of the top transverse plate (42); two ends of an upper transverse adjusting screw (56) are movably connected to the two upper fixed plates (55) through bearings; an upper moving servo motor (57) is fixed to the outer wall of one of the upper fixed plates (55); the upper moving servo motor (57) drives the upper transverse adjusting screw (56) to rotate; an upper guide rail (421) extending leftward and rightward is fixed to the bottom surface of the top transverse plate (42); and a main moving block (51) is screwed to the upper transverse adjusting screw (56).

7. A wheel hub pad printing device according to claim 6, characterized in that: A transverse guide strip (421) is fixed to the bottom surface of the top transverse plate (42), an upper guide slider (511) is fixed to the top surface of the main moving block (51), and the transverse guide strip (421) is inserted into an upper guide slot formed in the middle of the top surface of the upper guide slider (511).

8. The wheel hub pad printing device according to claim 1, characterized in that: Side protection plates (43) are fixed to the front and rear parts of the bottom surface of the top transverse plate (42), wherein a middle long adjustment slot (431) extending leftward and rightward is formed in the middle part of the side protection plate (43) on one side, a side sensing block (521) is fixed to the front side wall or the rear side wall of the vertical shell (52), a side proximity switch (4) is installed on the middle long adjustment slot (431), and the sensing end of the side proximity switch (4) corresponds to the side sensing block (521).

9. A wheel hub pad printing device according to claim 8, characterized in that: The side proximity switch (4) is located above and on the right side of the third proximity switch (3).

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