CN117226146B - Drilling equipment for armrest box framework processing - Google Patents
Drilling equipment for armrest box framework processing Download PDFInfo
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- CN117226146B CN117226146B CN202311204652.2A CN202311204652A CN117226146B CN 117226146 B CN117226146 B CN 117226146B CN 202311204652 A CN202311204652 A CN 202311204652A CN 117226146 B CN117226146 B CN 117226146B
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- hollow roller
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- 238000005553 drilling Methods 0.000 title claims abstract description 50
- 238000012545 processing Methods 0.000 title claims abstract description 16
- 239000010687 lubricating oil Substances 0.000 claims abstract description 59
- 238000001125 extrusion Methods 0.000 claims abstract description 14
- 230000009471 action Effects 0.000 claims abstract description 9
- 230000005484 gravity Effects 0.000 claims abstract description 9
- 230000001050 lubricating effect Effects 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 92
- 230000000903 blocking effect Effects 0.000 claims description 39
- 238000003860 storage Methods 0.000 claims description 18
- 238000005461 lubrication Methods 0.000 claims description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 239000012528 membrane Substances 0.000 claims description 12
- 239000003921 oil Substances 0.000 claims description 12
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000005389 magnetism Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 description 18
- 238000003756 stirring Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000003825 pressing Methods 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 244000309464 bull Species 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 206010024796 Logorrhoea Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Drilling And Boring (AREA)
Abstract
The invention discloses drilling equipment for processing a framework of an armrest box, which relates to the technical field of armrest box processing, and the structure of the drilling equipment comprises a base and a framework body, wherein a die shell and two limiting plates are arranged at the top of the base in a threaded manner, the two limiting plates are respectively and symmetrically distributed on two sides of the base, the framework body is movably sleeved outside the die shell and is contacted with the two limiting plates, and the drilling equipment further comprises: the drilling assembly and the lubricating assembly rotate relative to the hollow roller under the inertia action of the gravity ball through the rotating shaft which is rotationally connected, so that the belt rotating extrusion plate continuously rotates and extrudes lubricating oil in the hollow roller, the lubricating oil stretches out of the through hole under the action of centrifugal force and the pushing force of the extrusion plate, the lubricating oil flows out of and wets the sponge sleeve, and when the drill bit is in contact with the sponge sleeve, the lubricating oil can be uniformly smeared on the outer surface of the drill bit through the rotation of the drill bit and the hollow roller in different directions, so that the drilling friction force is reduced, and the drilling efficiency is improved.
Description
Technical Field
The invention relates to the technical field of armrest box machining, in particular to drilling equipment for armrest box framework machining.
Background
The armrest box is an automobile accessory arranged between two seats and used for placing arms when an automobile driver drives for a long time, so that the arms can be effectively rested and are not prone to being tingled and stiff, the armrest box is formed by assembling parts such as an armrest box framework and a soft cushion, and therefore the armrest box framework needs to be perforated in the production process, subsequent assembly is facilitated, and the existing drilling mode is mainly used for perforating through a manual drilling machine, so that the efficiency is low.
The utility model provides a five drilling equipment of high-speed railway seat armrest skeleton that publication (bulletin) number is CN217799083U, includes the bottom plate, a plurality of cushion of fixed connection on the bottom plate, the work piece is arranged in on the cushion, the bottom plate front side is equipped with a cylinder, a cylinder fixed connection cylinder fixed plate, cylinder fixed plate and bottom plate fixed connection, the left side of bottom plate is equipped with a side fender limiting plate, a side fender limiting plate right flank withstands the left side of work piece, a rear side fixed connection rear positioning baffle of bottom plate, a plurality of brill cover fixed plates of hole site fixed connection are treated to the work piece to the top of rear positioning baffle, it is equipped with a brill cover to bore to grind corresponding each hole position of treating on the cover fixed plate to bore, the top of work piece is equipped with a multiaxis ware box, connect a plurality of drills on the multiaxis ware box. The five-head drilling device for the high-speed rail seat armrest framework has the advantages that the processing hole position is accurate, special maintenance is not needed, and compared with the prior manual operation, the quality and the efficiency are improved dramatically;
the full-automatic lubrication oil coating device is high in efficiency, but does not have the function of fully automatically coating the lubrication oil on the drill bit, the friction force between the drill bit and the framework can be increased when the lubrication oil is not coated on the drill bit, the damage of the drill bit can be accelerated, and the manual lubrication oil coating is complicated.
Disclosure of Invention
The invention aims to provide drilling equipment for processing a handrail box framework, which is used for solving the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a drilling equipment for handrail case skeleton processing, includes base and skeleton body, mould casing and two limiting plates are installed to the top screw thread of base, two the limiting plate is symmetrical distribution respectively in the both sides of base, skeleton body movable sleeve is established in the outside of mould casing to contact with two limiting plates, still include:
the drilling assembly is fixedly arranged in the die shell, and sample holes matched with the drilling ends of the drilling assembly are formed in the two side plates and the two limiting plates of the die shell;
the lubrication assembly is used for fully automatically lubricating the drilling assembly, the lubrication assembly is fixedly arranged on an inner top plate of the die shell, and the lubrication assembly comprises a unidirectional liquid outlet control piece for preventing lubricating oil from leaking.
Preferably, the drilling assembly comprises a first motor fixedly arranged outside the die shell, a worm is rotationally connected between two adjacent side inner walls of the die shell and the limiting plate, one end of the worm rotationally penetrates through one side plate of the die shell and is fixedly connected with the output end of the first motor, a plurality of rotating rods are rotationally connected between two side inner walls of the die shell, the rotating rods are vertically distributed with the worm, a worm wheel meshed with the worm is fixedly sleeved at the center of the rotating rod, and positive/negative threads are symmetrically arranged at two ends of the rotating rod respectively and are respectively sleeved with a threaded sleeve;
the top of thread bush is fixed and is provided with the mounting bracket, the both sides face of mounting bracket is fixed and is provided with the connecting plate, the top of connecting plate is fixed and is provided with the slide, slide slidable mounting is on the roof of mould casing, the top fixed mounting of mounting bracket has the second motor, same group two the output of second motor sets up relatively to fixedly connected with drill bit respectively, the appearance hole looks adaptation with the drilling end of drill bit.
Preferably, the inside roof of mould casing fixedly is provided with a plurality of control module with same group second motor network connection, control module's both ends fixedly is provided with the control switch with control module electric connection, and the top fixedly connected with of corresponding second motor is pressed with the pressure board that offsets of control switch.
Preferably, the lubrication assembly comprises a liquid storage tank, a plurality of liquid storage tanks for storing lubricating oil are embedded in a top plate of the die shell, each liquid storage tank is provided with two drainage pipes in a sealing and rotating mode, a unidirectional liquid outlet control piece is fixedly arranged between the top end of each drainage pipe and the inner wall of each liquid storage tank, a hollow roller is sleeved at the bottom end of each drainage pipe, the bottom end of each drainage pipe extends to the inside of each hollow roller, a plurality of through grooves are formed in the side wall of each drainage pipe, a sponge sleeve is fixedly sleeved at the outer part of each hollow roller, the distance between two adjacent sponge sleeves in the same group is equal to the distance for a drill to pass through, and a convex ring for extruding the sponge sleeve is fixedly arranged at the outer part of the tail end of each drill.
Preferably, the inside roof of mould casing rotates and is connected with multiunit installation axle, every group the quantity of installation axle is four, the outside fixed second installation wheel and the gear of having cup jointed of installation axle, the outside fixed first installation wheel that has cup jointed of drainage tube, the transmission is connected with the conveyer belt between first installation wheel and the second installation wheel adjacent with the group, the slide is close to a side evenly fixed of adjacent second installation wheel and is provided with a plurality of templates, stir the board with second installation wheel meshing through the coil spring rotation between the both sides board of template.
Preferably, the unidirectional liquid outlet control piece comprises a liquid blocking disc, the top end of the drainage tube is fixedly blocked with the liquid blocking disc, a liquid inlet groove is formed in the edge of the liquid blocking disc, a first support frame and a second support frame are fixedly connected to an inner bottom plate of the liquid storage tank, a control disc attached to the top surface of the liquid blocking disc is fixedly connected between the first support frame and the second support frame, and a liquid outlet groove is formed in the edge of the control disc;
the circumference side of hinder the liquid dish is evenly fixed and is provided with polylith flange, the inside of first support frame is provided with the recess, the inside slidable mounting of recess has the spring board, fixedly connected with extension spring between spring board and the recess inner wall, the spring board is close to the fixed wedge that is provided with of side that hinders the liquid dish, the outer side of wedge is held and is run through the inner wall of recess to with polylith flange meshing, the both sides engagement surface of wedge sets up arc inclined plane and perpendicular respectively, the terminal surface of flange sets up to the cambered surface of roundness.
Preferably, a limit post is fixedly arranged on one side engagement surface of the convex plate, and a limit hole matched with the limit post is formed in the vertical surface of the wedge-shaped block.
Preferably, an elastic membrane is fixedly arranged in the through groove, and the elastic membrane is provided with a through hole.
Preferably, two rotating shafts are rotatably connected between the inner walls of the upper side and the lower side of the hollow roller, an extruding plate for rotationally pushing liquid is fixedly arranged outside the rotating shafts, and the bottom end of the rotating shaft is sealed to rotate to penetrate through the lower side plate of the hollow roller and is fixedly connected with a gravity ball.
Preferably, the inner side plate of the die shell is fixedly provided with a plurality of downward inclined drainage plates, the top surface of each drainage plate is provided with a drainage groove, the top of the base is adhered with a felt, and the top of the base is embedded with a magnetic block for magnetically fixing the bottom of the framework body and absorbing scrap iron.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the skeleton body to be drilled is sleeved outside the die shell, the skeleton body is attached to the two limiting plates, and then the punching work is started, as the shape of the die shell is attached to the skeleton body, the deformation of the skeleton body during drilling can be reduced, and the number, the size, the adjacent distance and the height of each group of drill bits in the die shell are reasonably set, so that the skeleton body is fully automatically punched at one time according to the requirement, and the production efficiency of the skeleton body is improved;
2. according to the invention, the template is arranged, when the threaded sleeve pushes the sliding plate to slide along the top plate of the die shell through the connecting plate, the poking plate is rotatably arranged between the templates through the coil spring, but the poking plate can only rotate unidirectionally due to the blocking of one side plate of the template, when the poking plate moves outwards along with the threaded sleeve and other parts, the poking plate can carry a rotating gear in the moving process due to the blocking of the side plate, but when the poking plate moves backwards along with the threaded sleeve and other parts, the poking plate can rotate to pass through the clamping teeth of the gear, so that the rotating gear is not carried, and the unidirectional driving force of the lubricating component is given;
3. when the liquid blocking disc drives the drainage tube to rotate forwards through the stirring plate, the liquid blocking disc rotates along with the liquid blocking disc, the convex plate rotates along with the liquid blocking disc to extrude the arc-shaped inclined surface of the wedge-shaped block, so that the wedge-shaped block is extruded into the groove, and smoothly passes through the wedge-shaped block to realize the purpose of normal rotation, and when the liquid blocking disc rotates normally, the liquid inlet groove is continuously overlapped with the liquid outlet groove, so that lubricating oil in the liquid storage tank flows into the drainage tube and finally enters the hollow roller;
4. according to the invention, the first motor is arranged to rotate at a variable speed, so that the hollow roller rotates at a variable speed, the rotating shaft connected in a rotating way rotates relative to the hollow roller under the inertia action of the gravity ball, so that the rotary extrusion plate is rotated continuously to extrude lubricating oil in the hollow roller, the lubricating oil is enabled to prop up the through holes under the action of centrifugal force and the pushing force of the extrusion plate, so that the lubricating oil flows out and wets the sponge sleeves, when the drill bit enters into a gap between the two sponge sleeves and contacts with the gap, the sponge sleeves are completely wetted, and the lubricating oil can be uniformly smeared on the outer surfaces of the drill bit by the rotation of the drill bit and the hollow roller in different directions, so that the drilling friction force is reduced, and the drilling efficiency is improved;
5. according to the invention, the elastic membrane is arranged, so that when the hollow roller and the extrusion plate are not rotated any more, even if the interior of the hollow roller is still provided with the rest lubricating oil, the blocking of the elastic membrane can prevent the lubricating oil from continuously soaking the sponge sleeve, and the loss of the lubricating oil is reduced;
6. according to the invention, the wedge-shaped block is arranged, when the drainage tube is not subjected to the rotation driving force given by the outside, even if the drainage tube is stopped at the position where the liquid inlet groove and the liquid outlet groove are overlapped, at the moment, the convex plate close to the liquid inlet groove is just positioned at the position where the wedge-shaped block is extruded, the convex plate is subjected to the rebound force of the telescopic spring, and the inclined surface of the wedge-shaped block and the end surface of the convex plate are combined to form a round cambered surface, so that the wedge-shaped block is necessarily ejected to be staggered with the convex plate, and the liquid inlet groove is also separated from the liquid outlet groove, so that when the drainage tube is not subjected to the rotation driving force given by the outside, lubricating oil is not dropped, the dropping time of the lubricating oil is controlled, and the waste of the lubricating oil is reduced;
7. according to the invention, the convex rings are arranged, when the drill bit drills at the corresponding position of the skeleton body, the convex rings are just positioned at the gaps between the sponge sleeves, and as the convex rings rotate at high speed along with the drill bit and turn to be vertical to the hollow rollers, the hollow rollers cannot be rotated, and the convex rings extrude lubricating oil in the two sponge sleeves, so that the situation that the drilling end of the drill bit continuously sticks with the lubricating oil when moving backwards, and rust passivation caused by long-time contact with the lubricating oil when leisure is avoided;
8. according to the invention, the downward inclined drainage plate is arranged, so that the thread sleeve is limited to move continuously and can bear lubricating oil extruded by the convex ring, and the lubricating oil can flow to a gap between the thread sleeve and the rotating rod along the drainage groove, thereby lubricating the thread sleeve and reducing friction between the thread sleeve and the rotating rod;
9. according to the invention, by arranging the magnetic blocks, not only is the adsorption and fixation of the skeleton body facilitated, but also broken scrap iron generated by drilling can be adsorbed by the magnetic blocks, the subsequent centralized treatment is facilitated, and small part of lubricating oil falling in the whole operation process can be adsorbed by sticking the oil absorption felt on the bottom plate of the base, so that the diffusion of the lubricating oil is reduced, and the oil absorption felt is also convenient to tear down and clean the lubricating oil.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a front cross-sectional view of the present invention;
FIG. 3 is a perspective view of a first portion of the present invention;
FIG. 4 is a perspective view of a second portion of the present invention;
FIG. 5 is a schematic view of the first portion of FIG. 2 according to the present invention;
FIG. 6 is a top cross-sectional view of a liquid barrier disk or the like of the present invention;
FIG. 7 is a schematic view of a second portion of the structure of FIG. 2 according to the present invention;
FIG. 8 is a schematic view of the third portion of FIG. 2 according to the present invention;
FIG. 9 is a first perspective view of a gear or the like of the present invention;
FIG. 10 is a second perspective view of a gear or the like of the present invention;
fig. 11 is a bottom view of the internal structure of the mold housing of the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
1. a base; 11. an oil absorption felt; 12. a magnetic block; 13. a skeleton body;
2. a mold housing; 21. a first motor; 22. a worm; 23. a control module; 231. a control switch; 24. a drainage plate; 241. drainage grooves; 25. a sample hole;
3. a rotating rod; 31. a worm wheel; 32. a thread sleeve; 321. a mounting frame; 322. a connecting plate; 33. a second motor; 331. a pressing plate;
4. a drill bit; 41. a convex ring;
5. a liquid storage tank; 51. a first support frame; 52. a second support frame; 53. a control panel; 531. a liquid outlet groove; 54. a groove; 55. a telescopic spring; 56. a spring plate; 57. wedge blocks; 571. a limiting hole;
6. a drainage tube; 61. hollow idler wheels; 62. a sponge sleeve; 63. a rotating shaft; 64. an extrusion plate; 65. a gravity ball; 66. a through groove; 67. an elastic film; 671. a through hole; 68. a first mounting wheel; 69. a liquid blocking disc; 691. a convex plate; 692. a limit column; 693. a liquid inlet tank;
7. a mounting shaft; 71. a second mounting wheel; 72. a conveyor belt; 73. a gear;
8. a slide plate; 81. templates; 82. a toggle plate;
9. and a limiting plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 11, the present invention provides a technical solution:
the utility model provides a drilling equipment for handrail case skeleton processing, includes base 1 and skeleton body 13, mould casing 2 and two limiting plates 9 are installed to the top screw thread of base 1, two limiting plates 9 are symmetrical distribution respectively in the both sides of base 1, the outside at mould casing 2 is established to skeleton body 13 movable sleeve to contact with two limiting plates 9, still include:
the drilling assembly is fixedly arranged in the die shell 2, and sample holes 25 matched with the drilling ends of the drilling assembly are formed in the two side plates and the two limiting plates 9 of the die shell 2;
the lubrication assembly is used for fully automatically lubricating the drilling assembly, the lubrication assembly is fixedly arranged on the inner top plate of the die shell 2, and the lubrication assembly comprises a one-way liquid outlet control piece used for preventing lubricating oil from leaking.
First embodiment
The drilling assembly comprises a first motor 21 fixedly arranged outside a die shell 2, a worm 22 is rotationally connected between two adjacent side inner walls of the die shell 2 and a limiting plate 9, one end of the worm 22 rotationally penetrates through one side plate of the die shell 2 and is fixedly connected with the output end of the first motor 21, a plurality of rotating rods 3 are rotationally connected between two side inner walls of the die shell 2, the rotating rods 3 are vertically distributed with the worm 22, a worm wheel 31 meshed with the worm 22 is fixedly sleeved at the center of the rotating rods 3, and positive/negative threads are symmetrically arranged at two ends of the rotating rods 3 respectively and are respectively in threaded sleeve connection with a threaded sleeve 32;
the top of the thread bush 32 is fixedly provided with a mounting frame 321, two side surfaces of the mounting frame 321 are fixedly provided with connecting plates 322, the top ends of the connecting plates 322 are fixedly provided with sliding plates 8, the sliding plates 8 are slidably mounted on the top plate of the die shell 2, the top of the mounting frame 321 is fixedly provided with a second motor 33, the output ends of the same group of two second motors 33 are oppositely arranged and are respectively and fixedly connected with a drill bit 4, and the sample holes 25 are matched with the drilling ends of the drill bits 4;
the inside roof of mould casing 2 fixedly is provided with a plurality of control module 23 with same group's second motor 33 internet access, control module 23's both ends fixedly is provided with the control switch 231 with control module 23 electric connection, and the top fixedly connected with of corresponding second motor 33 is with the pressure plate 331 that offsets with control switch 231 and presses.
When the rotary rod 3 rotates, the two screw sleeves 32 in the same group can drive the second motor 33 to horizontally move in opposite directions, the pressing plate 331 arranged on the second motor 33 is pressed against the control switch 231, when the second motor 33 moves outwards along with the screw sleeves 32, the pressing plate 331 does not press against the control switch 231 any more, the control module 23 receives an electric signal of the control switch 231, so that the second motor 33 corresponding to network control starts to operate, and the second motor 33 drives the drill bit 4 to rotate at high speed.
Second embodiment
The lubrication assembly comprises a liquid storage tank 5, a plurality of liquid storage tanks 5 for storing lubricating oil are embedded in the top plate of a die shell 2, each liquid storage tank 5 is provided with two drainage pipes 6 in a sealing and rotating mode, unidirectional liquid outlet control pieces are fixedly arranged between the top ends of the drainage pipes 6 and the inner wall of the liquid storage tank 5, hollow rollers 61 are sleeved at the bottom end of each drainage pipe 6, the bottom ends of the drainage pipes 6 extend to the inside of each hollow roller 61, a plurality of through grooves 66 are formed in the side wall of each drainage pipe 6, sponge sleeves 62 are fixedly sleeved at the outer portions of the hollow rollers 61, the distance between two adjacent sponge sleeves 62 in the same group is equal to the distance for a drill bit 4 to pass through, and convex rings 41 for extruding the sponge sleeves 62 are fixedly arranged at the outer portions of the tail ends of the drill bit 4.
The inside roof of mould casing 2 rotates and is connected with multiunit installation axle 7, every group installation axle 7's quantity is four, the outside fixed second installation wheel 71 and the gear 73 of cup jointing of installation axle 7, the outside fixed first installation wheel 68 of cup jointing of drainage tube 6, the transmission is connected with conveyer belt 72 between first installation wheel 68 and the adjacent second installation wheel 71 of same group, slide 8 is close to the even fixed a plurality of template 81 that are provided with of side of adjacent second installation wheel 71, stir plate 82 with the meshing of second installation wheel 71 is installed through the rotation of the wind spring between the both sides board of template 81.
During operation, the threaded sleeve 32 pushes the sliding plate 8 to slide along the top plate of the die shell 2 in the same direction through the connecting plate 322 in the moving process, the poking plate 82 is rotatably installed between the templates 81 through the coil springs, but due to the blocking of one side plate of the templates 81, the poking plate 82 can only rotate in one direction, when the poking plate 82 moves outwards along with the threaded sleeve 32 and other parts, the poking plate 82 can rotate with the gear 73 in the moving process due to the blocking of the side plate, the gear 73 rotates with the second mounting wheel 71 through the mounting shaft 7, the second mounting wheel 71 rotates with the corresponding first mounting wheel 68 through the conveying belt 72, and the drainage tube 6 rotates with the rotating hollow roller 61.
Third embodiment
The unidirectional liquid outlet control piece comprises a liquid blocking disc 69, the top end of the drainage tube 6 is fixedly blocked with the liquid blocking disc 69, a liquid inlet groove 693 is formed in the edge of the liquid blocking disc 69, a first support frame 51 and a second support frame 52 are fixedly connected to the inner bottom plate of the liquid storage tank 5, a control disc 53 which is attached to the top surface of the liquid blocking disc 69 is fixedly connected between the first support frame 51 and the second support frame 52, and a liquid outlet groove 531 is formed in the edge of the control disc 53;
the circumference side of hinder liquid dish 69 is even fixed and is provided with polylith boss 691, the inside of first support frame 51 is provided with recess 54, the inside slidable mounting of recess 54 has spring plate 56, fixedly connected with extension spring 55 between spring plate 56 and the recess 54 inner wall, spring plate 56 is close to the fixed wedge 57 that is provided with of side that hinders liquid dish 69, the outside end slip of wedge 57 runs through the inner wall of recess 54 to with polylith boss 691 meshing, the both sides meshing face of wedge 57 sets up arc inclined plane and perpendicular respectively, the terminal surface of boss 691 sets up to the cambered surface of roundness.
A limit post 692 is fixedly arranged on one side engagement surface of the protruding plate 691, and a limit hole 571 matched with the limit post 692 is arranged on the vertical surface of the wedge-shaped block 57.
During operation, the liquid blocking disc 69 fixedly arranged at the top end of the drainage tube 6 rotates along with the rotation, although the convex plate 691 arranged outside the liquid blocking disc 69 is meshed with the wedge block 57, when the liquid blocking disc 69 rotates forward, the convex plate 691 can squeeze the inclined surface of the wedge block 57, so that the elasticity of the telescopic spring 55 is overcome to squeeze the wedge block 57 into the groove 54, the normal rotation purpose is realized by smoothly crossing the wedge block 57, and when the liquid blocking disc 69 rotates normally, the liquid inlet groove 693 is continuously overlapped with the liquid outlet groove 531, so that lubricating oil in the liquid storage tank 5 smoothly flows into the drainage tube 6 and finally enters the hollow roller 61;
when the drainage tube 6 does not rotate any more, the drainage tube 6 does not continue to rotate any more, and no lubricating oil enters the hollow roller 61, because even if the drainage tube 6 is stopped at the position where the liquid inlet groove 693 coincides with the liquid outlet groove 531, the convex plate 691 close to the liquid inlet groove 693 is positioned at the position where the wedge block 57 is pressed, but when the drainage tube 6 does not give the rotating force of the liquid blocking disc 69 any more, the convex plate 691 is subjected to the resilience force of the telescopic spring 55, and the inclined plane of the wedge block 57 and the end face of the convex plate 691 are both set to be round cambered surfaces, so that the wedge block 57 is ejected and staggered with the convex plate 691, and the liquid inlet groove 693 also misplaces the liquid outlet groove 531, so that no lubricating oil falls when the drainage tube 6 is not given the rotating driving force from the outside;
by providing the stopper 692, when the projection 691 presses the vertical surface of the wedge 57, the stopper 692 provided on the engagement surface of the projection 691 is caught in the inside of the stopper hole 571, so that the wedge 57 cannot be pressed into the inside of the groove 54 as in the case of forward rotation, so that the projection 691 cannot pass the wedge 57 in the reverse direction, thereby restricting the reverse rotation of the drain tube 6, and thus, when the drill bit 4 passes the gap between the sponge sleeves 62 in the reverse direction, the hollow roller 61 cannot rotate.
Fourth embodiment
An elastic membrane 67 is fixedly arranged in the through groove 66, and the elastic membrane 67 is provided with a through hole 671.
Two rotating shafts 63 are rotatably connected between the inner walls of the upper side and the lower side of the hollow roller 61, an extruding plate 64 for rotatably pushing liquid is fixedly arranged outside the rotating shafts 63, and the bottom end of the rotating shaft 63 is hermetically rotated to penetrate through the lower side plate of the hollow roller 61 and is fixedly connected with a gravity ball 65.
In operation, since the first motor 21 is set to rotate at a variable speed, the moving speed of the threaded sleeve 32 is variable speed, the hollow roller 61 rotates at a variable speed, so that the rotating shaft 63 connected in a rotating manner rotates relative to the hollow roller 61 under the inertia action of the gravity ball 65, the rotary extrusion plate 64 is rotated continuously to extrude the lubricating oil in the hollow roller 61, the lubricating oil overcomes the elasticity of the elastic membrane 67 and expands the through hole 671 under the double actions of centrifugal force and the pushing force of the extrusion plate 64, and flows out, and wets the sponge sleeve 62, when the hollow roller 61 and the extrusion plate 64 are not rotated any more, even if the lubricating oil remains in the hollow roller 61, the blocking of the elastic membrane 67 can prevent the lubricating oil from continuously wetting the sponge sleeve 62, so that the loss of the lubricating oil is reduced, and when the drill bit 4 enters into the gap between the two sponge sleeves 62 and contacts with the gap, the sponge sleeve 62 is completely wetted, the self-rotation of the drill bit 4 and the rotation of the hollow roller 61 in the vertical direction of the drill bit 4 can uniformly smear the lubricating oil on the outer surface of the drill bit 4, thereby reducing the drilling friction force and improving the drilling efficiency.
Fifth embodiment
The inside board of mould casing 2 is fixed to be provided with polylith downward sloping drainage board 24, the top surface of drainage board 24 is provided with drainage groove 241, oil absorption felt 11 is pasted at the top of base 1, the magnetic shoe 12 that is used for magnetism fixed skeleton body 13 bottom and adsorbs the iron fillings is installed in the top embedding of base 1.
During operation, through setting up magnetic block 12, not only be convenient for adsorb fixed skeleton body 13, the garrulous iron fillings that drilling produced also can be adsorbed by magnetic block 12, be convenient for follow-up centralized processing, through pasting oil blanket 11 on the bottom plate of base 1, can adsorb the fractional lubrication oil that drops in the whole operation process, thereby reduce the diffusion of lubricating oil, also be convenient for tear down oil blanket 11 and clear up lubricating oil, through setting up drain plate 24 of downward sloping, not only be used for spacing thread bush 32 to continue to remove, and can accept the lubricating oil that is crowded down by bulge loop 41, lubricating oil can flow to the gap department between thread bush 32 and bull stick 3 along drainage groove 241, thereby lubricate thread bush 32, reduce the friction between thread bush 32 and the bull stick 3.
Working principle: the frame body 13 to be drilled is sleeved outside the die shell 2, the frame body 13 is attached to the two limiting plates 9, then the first motor 21 is started to rotate at variable speed, the first motor 21 rotates with the worm 22, when the worm 22 rotates, the synchronous belt rotates with the worm gears 31, the worm gears 31 rotate and then rotate the rotating rod 3, as two opposite threads are symmetrically arranged at two ends of the rotating rod 3, and two threaded sleeves 32 sleeved at two ends of the rotating rod 3 are limited by the connecting plate 322 and the sliding plate 8, when the rotating rod 3 rotates, the two threaded sleeves 32 in the same group drive the second motor 33 to horizontally move in opposite directions, and as the pressing plate 331 arranged on the second motor 33 presses against the control switch 231, when the second motor 33 moves outwards along with the threaded sleeves 32, the pressing plate 331 does not press against the control switch 231 any more, the control module 23 receives an electric signal for controlling the switch 231, so that the corresponding second motor 33 starts to operate under network control, the second motor 33 drives the drill bit 4 to rotate at high speed, and the drill bit 4 also moves along with the threaded sleeves 32 and gradually approaches to the two hollow rollers 61;
in the moving process of the threaded sleeve 32, the sliding plate 8 is pushed to slide along the top plate of the die shell 2 in the same direction through the connecting plate 322, as the stirring plate 82 is rotatably arranged between the templates 81 through the coil springs, but due to the blocking of one side plate of the templates 81, the stirring plate 82 can only rotate in one direction, when the stirring plate 82 moves outwards along with the parts such as the threaded sleeve 32, and the like, due to the blocking of the side plate, the stirring plate 82 can carry the rotating gear 73 in the moving process, the gear 73 carries the second mounting wheel 71 through the mounting shaft 7, the second mounting wheel 71 carries the corresponding first mounting wheel 68 through the transmission belt 72 to rotate, the drainage tube 6 rotates along with the rotation and carries the rotating hollow roller 61, the liquid blocking disc 69 fixedly arranged at the top end of the drainage tube 6 rotates along with the rotation, and the convex plate 691 arranged outside the liquid blocking disc 69 is meshed with the wedge block 57, but when the liquid blocking disc 69 rotates in the forward direction, the convex plate 691 can squeeze the inclined plane of the wedge block 57, so as to overcome the elasticity of the telescopic spring 55 and squeeze the wedge block 57 into the inside of the groove 54, thereby smoothly passing through the wedge block 57 to realize normal rotation, the liquid blocking disc 69 rotates, and the purpose of smoothly, and the liquid blocking disc 69 does not coincide with the inside of the hollow roller 61 when the liquid blocking disc 69 rotates along with the groove 61, and finally the inside the hollow roller 61 is smoothly entering the hollow box 5;
because the first motor 21 is set to rotate at a variable speed, the moving speed of the threaded sleeve 32 is variable speed, the hollow roller 61 rotates at a variable speed along with the moving speed, so that the rotating shaft 63 connected in a rotating way rotates relative to the hollow roller 61 under the inertia action of the gravity ball 65, the rotary extrusion plate 64 is rotated continuously to extrude lubricating oil in the hollow roller 61, so that the lubricating oil overcomes the elasticity of the elastic membrane 67 and the through hole 671 under the double actions of centrifugal force and the pushing force of the extrusion plate 64 to flow out and wets the sponge sleeve 62, when the hollow roller 61 and the extrusion plate 64 do not rotate any more, even if the lubricating oil remains in the hollow roller 61, the blocking of the elastic membrane 67 can prevent the lubricating oil from continuously wetting the sponge sleeve 62, the loss of the lubricating oil is reduced, and when the drill bit 4 enters into a gap between the two sponge sleeves 62 and contacts with the gap, the sponge sleeve 62 is completely wetted, the self-rotation of the drill bit 4 and the rotation of the hollow roller 61 in the vertical direction of the drill bit 4 can uniformly smear the lubricating oil on the outer surface of the drill bit 4, so that the drilling friction force is reduced and the drilling efficiency is improved;
when the head of the drill bit 4 passes through the gap between the hollow rollers 61, the drill bit can continuously pass through the sample holes 25 arranged on the side wall of the die shell 2, and holes are drilled at the corresponding positions of the skeleton body 13 until the drill bit is penetrated, and broken iron scraps generated by the drilling can fall on the top of the base 1 and are adsorbed by the magnetic blocks 12, so that subsequent centralized processing is facilitated, and at the moment, the thread sleeve 32 just contacts the drainage plate 24 and cannot continuously move outwards due to the abutting of the drainage plate 24;
at the same time, the convex ring 41 is positioned at the gap between the sponge sleeves 62, at the moment, the threaded sleeve 32 cannot move continuously, so that the drainage tube 6 cannot rotate continuously, and no lubricating oil enters the hollow roller 61, because even if the drainage tube 6 finally stops at the position where the liquid inlet groove 693 coincides with the liquid outlet groove 531, the convex plate 691 close to the liquid inlet groove 693 is positioned at the position where the wedge block 57 is pressed, but when the drainage tube 6 does not give the rotating force of the liquid blocking disc 69 any more, the convex plate 691 is subjected to the reverse elastic force of the telescopic spring 55, and the inclined surface of the combined wedge block 57 and the end surface of the convex plate 691 are all arranged to be round cambered surfaces, so that the wedge block 57 is ejected out of the convex plate 691, and the liquid inlet groove 693 is also misplaced out of the liquid inlet groove 531, so that no lubricating oil falls when the drainage tube 6 is not given by the rotation driving force of the outside any more; when the convex ring 41 is positioned in the gap between the sponge sleeves 62, the two sponge sleeves 62 are continuously extruded along with the high-speed rotation of the drill bit 4, so that lubricating oil is extruded, the extruded lubricating oil falls on the top surface of the drainage plate 24, flows to the gap between the thread sleeve 32 and the rotating rod 3 along the drainage groove 241, so that the thread sleeve 32 is lubricated, and friction between the thread sleeve 32 and the rotating rod 3 is reduced;
the first motor 21 is internally provided with a control program, when the first motor 21 is stopped for a few seconds after being subjected to the resistance of the drainage plate 24 and then starts to reversely rotate, when the first motor 21 reversely rotates the belt-rotating worm 22, the threaded sleeve 32 starts to move back, the sliding plate 8 fixedly connected with the threaded sleeve is slid back along with the belt-rotating worm, as the other side of the stirring plate 82 is not blocked by the side plate, the stirring plate 82 rotates to pass through the clamping teeth of the gear 73 without carrying the rotating gear 73 when moving relative to the gear 73, and as the convex plate 691 presses the vertical surface of the wedge block 57, the limit posts 692 arranged on the engagement surface of the convex plate 691 can be blocked into the limit holes 571, so that the wedge block 57 cannot be pressed into the inside of the groove 54 like in forward rotation, and therefore the convex plate 691 cannot reversely pass through the wedge block 57, the reverse rotation of the drainage tube 6 is limited, and therefore when the drill bit 4 reversely passes through a gap between the sponge sleeves 62, the hollow roller 61 cannot rotate, and as most of lubricating oil of the sponge sleeve 62 is squeezed by the convex ring 41, the lubricating oil is not smeared when the drill bit 4, and the lubricating oil is prevented from contacting the drill bit 4 again for a long time to rust;
finally, when the parts such as the second motor 33 and the screw sleeve 32 completely return to the original positions, the first motor 21 is turned off, and the pressing plate 331 disposed outside the second motor 33 again presses the control switch 231, so that the control module 23 also controls the second motor 33 to stop rotating, wherein the oil-absorbing felt 11 is stuck on the bottom plate of the base 1, so that a small part of the lubricating oil falling in the whole operation process can be absorbed, the diffusion of the lubricating oil is reduced, and the oil-absorbing felt 11 is also convenient to tear and clean the lubricating oil.
The mould casing 2 of this device can be according to the shape customization of skeleton body 13 and the shape of skeleton body 13 looks adaptation, makes skeleton body 13 can cup joint in the outside of mould casing 2 just to laminate mutually with limiting plate 9, the quantity, size, adjacent distance and the height of drill bit 4 of every group of inside drill bit 4 of mould casing 2 all can be at the quantity, size and the position reasonable setting that the skeleton body 13 side was punched as required, this device is applicable to the mass production of skeleton body 13 of different models.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a drilling equipment for handrail case skeleton processing, includes base (1) and skeleton body (13), mould casing (2) and two limiting plates (9) are installed to the top screw thread of base (1), two limiting plates (9) symmetry respectively distribute in the both sides of base (1), outside at mould casing (2) is established to skeleton body (13) movable sleeve to contact with two limiting plates (9), its characterized in that still includes:
the drilling assembly is fixedly arranged in the die shell (2), and sample holes (25) matched with the drilling ends of the drilling assembly are formed in two side plates and two limiting plates (9) of the die shell (2);
the lubrication assembly is used for fully automatically lubricating the drilling assembly and is fixedly arranged on an inner top plate of the die shell (2), and comprises a unidirectional liquid outlet control piece for preventing lubricating oil from leaking;
the lubrication assembly comprises a liquid storage tank (5), a plurality of liquid storage tanks (5) for storing lubricating oil are embedded in a top plate of a die shell (2), each liquid storage tank (5) is provided with two drainage pipes (6) in a sealing and rotating mode, a unidirectional liquid outlet control piece is fixedly arranged between the top end of each drainage pipe (6) and the inner wall of each liquid storage tank (5), a hollow roller (61) is fixedly sleeved at the bottom end of each drainage pipe (6), a plurality of through grooves (66) are formed in the side wall of each drainage pipe (6), sponge sleeves (62) are fixedly sleeved outside the hollow roller (61), the distance between two adjacent sponge sleeves (62) in the same group is just set to be the distance for a drill bit (4) to pass through, convex rings (41) for extruding the sponge sleeves (62) are fixedly arranged outside the tail end of each drill bit (4), a plurality of groups of mounting shafts (7) are rotatably connected to the inner top plate of the die shell (2), the number of the mounting shafts (7) is four, a second gear (73) is fixedly sleeved at the outer mounting shafts (7), a second gear (73) is fixedly sleeved at the outer gear (73), a conveyor belt (72) is in transmission connection between the first mounting wheels (68) and the second mounting wheels (71) adjacent to the first mounting wheels in the same group, a plurality of templates (81) are uniformly and fixedly arranged on one side surface of the sliding plate (8) close to the second mounting wheels (71), and toggle plates (82) meshed with the second mounting wheels (71) are rotatably arranged between two side plates of the templates (81) through coil springs;
an elastic membrane (67) is fixedly arranged in the through groove (66), and the elastic membrane (67) is provided with a through hole (671);
two rotating shafts (63) are rotatably connected between the inner walls of the upper side and the lower side of the hollow roller (61), an extrusion plate (64) for rotationally pushing liquid is fixedly arranged outside the rotating shafts (63), and the bottom end of each rotating shaft (63) is hermetically rotated to penetrate through the lower side plate of the hollow roller (61) and is fixedly connected with a gravity ball (65);
the first motor (21) is set to rotate at a variable speed, so that the hollow roller (61) also rotates at a variable speed, and the rotating shaft (63) connected with the rotating shaft rotates relative to the hollow roller (61) under the inertia action of the gravity ball (65), so that the belt rotating extrusion plate (64) continuously rotates to extrude lubricating oil in the hollow roller (61).
2. A drilling apparatus for armrest box frame processing as set forth in claim 1, wherein: the drilling assembly comprises a first motor (21) fixedly arranged outside a die shell (2), a worm (22) is rotationally connected between two adjacent side inner walls of the die shell (2) and a limiting plate (9), one end of the worm (22) rotationally penetrates through one side plate of the die shell (2) and is fixedly connected with the output end of the first motor (21), a plurality of rotating rods (3) are rotationally connected between two side inner walls of the die shell (2), the rotating rods (3) are vertically distributed with the worm (22), worm gears (31) meshed with the worm (22) are fixedly sleeved at the center of the rotating rods (3), and positive/negative threads are symmetrically arranged at two ends of the rotating rods (3) respectively and are respectively in threaded sleeve connection with threaded sleeves (32);
the top of thread bush (32) is fixed and is provided with mounting bracket (321), the both sides face of mounting bracket (321) is fixed and is provided with connecting plate (322), the fixed slide (8) that is provided with in top of connecting plate (322), slide (8) slidable mounting is on the roof of mould casing (2), the top fixed mounting of mounting bracket (321) has second motor (33), same group two the output of second motor (33) sets up relatively to fixedly connected with drill bit (4) respectively, the drill tip looks adaptation of appearance hole (25) and drill bit (4).
3. A drilling apparatus for armrest box frame processing as set forth in claim 2, wherein: the inside roof of mould casing (2) fixedly is provided with a plurality of control module (23) with group second motor (33) internet access, control module (23) both ends fixedly is provided with control switch (231) with control module (23) electric connection, and the top fixedly connected with of corresponding second motor (33) supports clamp plate (331) with control switch (231) looks butt pressure.
4. A drilling apparatus for armrest box frame processing as set forth in claim 1, wherein: the unidirectional liquid outlet control piece comprises a liquid blocking disc (69), the top end of the drainage tube (6) is fixedly blocked with the liquid blocking disc (69), a liquid inlet groove (693) is formed in the edge of the liquid blocking disc (69), a first supporting frame (51) and a second supporting frame (52) are fixedly connected to the inner bottom plate of the liquid storage tank (5), a control disc (53) attached to the top surface of the liquid blocking disc (69) is fixedly connected between the first supporting frame (51) and the second supporting frame (52), and a liquid outlet groove (531) is formed in the edge of the control disc (53);
the utility model discloses a liquid-blocking disc, including baffle disc (69), recess (54) are provided with in the inside of baffle disc (69), the inside of first support frame (51) is provided with recess (54), the inside slidable mounting of recess (54) has spring plate (56), fixedly connected with expansion spring (55) between spring plate (56) and recess (54) inner wall, spring plate (56) are close to baffle disc (69) a side fixed wedge (57) that is provided with, the outside end slip of wedge (57) runs through recess (54) inner wall to with the meshing of polylith flange (691), the both sides engagement surface of wedge (57) sets up arc inclined plane and perpendicular respectively, the terminal surface of flange (691) sets up to the cambered surface of circular-arc.
5. A drilling apparatus for armrest box frame processing as set forth in claim 4, wherein: a limit column (692) is fixedly arranged on one side engagement surface of the convex plate (691), and a limit hole (571) matched with the limit column (692) is arranged on the vertical surface of the wedge-shaped block (57).
6. A drilling apparatus for armrest box frame processing according to any one of claims 1-5, wherein: the inside board of mould casing (2) is fixed to be provided with polylith downward sloping drainage board (24), the top surface of drainage board (24) is provided with drainage groove (241), oil absorption felt (11) are pasted at the top of base (1), magnetic block (12) that are used for fixed skeleton body (13) bottom of magnetism and adsorb the iron fillings are installed in the top embedding of base (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311204652.2A CN117226146B (en) | 2023-09-19 | 2023-09-19 | Drilling equipment for armrest box framework processing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311204652.2A CN117226146B (en) | 2023-09-19 | 2023-09-19 | Drilling equipment for armrest box framework processing |
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| CN117226146B true CN117226146B (en) | 2024-02-13 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU918415A1 (en) * | 1980-06-04 | 1982-04-07 | Уфимский Нефтяной Институт | Above-bit lubricator |
| CN210755250U (en) * | 2019-01-08 | 2020-06-16 | 比尔安达（安徽）纳米涂层技术有限公司 | Wear-resisting drilling equipment of high strength |
| CN212470750U (en) * | 2020-06-19 | 2021-02-05 | 重庆久德机械制造有限公司 | Drill bit cooling and lubricating mechanism |
| CN216967160U (en) * | 2022-01-07 | 2022-07-15 | 杭州萧山市北农机有限公司 | Part machining drilling device |
| CN217799083U (en) * | 2022-06-08 | 2022-11-15 | 青岛华铁嘉泰交通设备有限公司 | Five-head drilling device for high-speed rail seat armrest framework |
| CN115555618A (en) * | 2022-11-10 | 2023-01-03 | 深圳市雄华光学有限公司 | Lubricating device for drill bit and using method thereof |
-
2023
- 2023-09-19 CN CN202311204652.2A patent/CN117226146B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU918415A1 (en) * | 1980-06-04 | 1982-04-07 | Уфимский Нефтяной Институт | Above-bit lubricator |
| CN210755250U (en) * | 2019-01-08 | 2020-06-16 | 比尔安达（安徽）纳米涂层技术有限公司 | Wear-resisting drilling equipment of high strength |
| CN212470750U (en) * | 2020-06-19 | 2021-02-05 | 重庆久德机械制造有限公司 | Drill bit cooling and lubricating mechanism |
| CN216967160U (en) * | 2022-01-07 | 2022-07-15 | 杭州萧山市北农机有限公司 | Part machining drilling device |
| CN217799083U (en) * | 2022-06-08 | 2022-11-15 | 青岛华铁嘉泰交通设备有限公司 | Five-head drilling device for high-speed rail seat armrest framework |
| CN115555618A (en) * | 2022-11-10 | 2023-01-03 | 深圳市雄华光学有限公司 | Lubricating device for drill bit and using method thereof |
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|---|---|
| CN117226146A (en) | 2023-12-15 |
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