Digital intelligent production line for wheel brake discs

Abstract

The invention belongs to the technical field of wheel assembly production, and particularly relates to a wheel brake disc digital intelligent production line. Comprising an overturning part, a spraying part and a combining and pre-screwing part which are sequentially arranged along a production line. The overturning component comprises a bottom supporting assembly, a lifting supporting assembly, a clamping overturning assembly, a wheel rotating assembly and a horizontal driving assembly. The spraying component comprises a spraying chamber, and a robot, a quick-change frame and a rotary supporting frame which are arranged in the spraying chamber; the quick-change frame comprises a vertical frame, a quick-change positioning plate, a functional assembly and a locking assembly; the combining and pre-screwing part comprises a screw supply assembly and a combining and pre-screwing assembly; according to the wheel brake disc digital intelligent production line, on the basis of an existing production line structure, a brand new wheel overturning, transferring and assembling structure is adopted, the automation level of the production line is further improved, the continuous production operation capacity is improved, meanwhile, the proportion of manual operation is effectively reduced, and the operation safety of the production line is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of wheel assembly production, and in particular relates to a digital production line for wheel brake discs. Background Art

[0002] Wheel brake discs are important components installed on train track wheels. Their assembly process involves multiple connections and fixations of various large-sized and medium-mass components. Due to the large number of parts and the inclusion of multiple high-mass components, the traditional manual assembly process is inefficient and the assembly quality is difficult to guarantee. The industry has begun to adopt fully automated production lines to replace manual assembly, but the current automated production method mainly focuses on industrial upgrades and renovations in general processes such as production line material transportation. There is a lack of a product that can systematically and efficiently complete the assembly and production of wheel brake discs. Summary of the Invention

[0003] The purpose of the present invention is to provide a wheel brake disc digital production line for systematically and efficiently completing the assembly and production of wheel brake discs based on actual needs and in combination with the current production line technology level.

[0004] To achieve the above objectives, the present invention adopts the following technical solutions.

[0005] A digital production line for wheel brake discs, comprising a turning component, a spraying component, and an assembly and pre-tightening component arranged in sequence along the production line;

[0006] The flipping components include the bottom support assembly A1, the lifting support assembly A2, the clamping flip assembly A3, the wheel rotation assembly A4, and the horizontal drive assembly A5;

[0007] The bottom support assembly A1 includes: a bottom frame A10, a transverse guide rail A11, a horizontal sliding plate frame A12, and an intermediate fixed plate frame A13;

[0008] The middle fixed plate frame A13 is fixedly set in the middle of the base frame A10, and two sets of transverse guide rails A11 are symmetrically arranged on the left and right sides of the middle fixed plate frame A13. Two horizontal sliding plate frames A12 are movably connected to the transverse guide rails A11 through sliders;

[0009] The lifting support assembly A2 includes: a vertical frame A20, a vertical screw A21, and a vertical guide rail A22;

[0010] Two vertical frames A20 are fixedly arranged on the upper sides of the two horizontal sliding plates A12, and the vertical screws A21 are vertically installed inside the vertical frames A20; two sets of vertical guide rails A22 are arranged on one side of the two vertical frames A20 facing the middle fixed plate A13 and are arranged vertically;

[0011] The two clamping and flipping assemblies A3 are respectively installed on the two vertical frames A20; the clamping and flipping assemblies A3 include: a vertical sliding plate frame A30, an electric turntable A31, a clamping arm A32, and a clamping wheel A33;

[0012] The vertical sliding plate frame A30 is connected to the vertical guide rail A22 via a slider. A first nut seat A300 is provided on the outer surface of the vertical sliding plate frame A30, and the first nut seat A300 is sleeved on the vertical lead screw A21. The electric turntable A31 is provided on the inner surface of the vertical sliding plate frame A30, with its rotating axis pointing horizontally toward the side of the intermediate fixed plate frame A13. The clamping arm A32 is fixed to the rotating disk surface of the electric turntable A31. The clamping arm A32 has a Y-shaped structure, and two clamping wheels A33 are respectively mounted on the forked end portions of the clamping arm A32. The central portion of the clamping wheel A33 has an annular positioning groove A33a.

[0013] The wheel rotation assembly A4 includes: a support cylinder A40, a first motor A41, a gear set A42, and a wheel positioning member A43;

[0014] The support cylinder A40 is vertically fixed on the intermediate fixed plate frame A13. The first motor A41 is disposed on the outer wall of the support cylinder A40 and near the upper end. The gear set A42 includes a main gear A420 and a slave gear A421. The main gear A420 is mounted on the output shaft of the first motor A41. The slave gear A421 is transmission-connected to the main gear A420 and rotatably disposed on the top of the support cylinder A40. The wheel positioning member A43 is fixedly disposed on the slave gear A421.

[0015] The horizontal drive assembly A5 is provided at the bottom of the chassis A10 and includes: a transverse screw A50, a second nut seat A51, a second motor A52, a third motor A53, a universal joint coupling A54, and a commutator A55;

[0016] The second motor A52 drives the horizontal screw A50 to rotate, and the second nut seat A51 is sleeved on the horizontal screw A50 and connected to the bottom of the horizontal sliding plate frame A12;

[0017] The third motor A53 is connected to the vertical screw A21 through a universal joint coupling A54 and a commutator A55;

[0018] The spraying components include a spraying room B1 and a robot B2, a quick-change rack B3, and a rotating support rack B4 located in the spraying room B1. The quick-change rack B3 includes a stand B30, a quick-change positioning plate B31, a functional component B32, and a locking component B33.

[0019] The quick-change positioning plate B31 is set horizontally and fixed to the top of the vertical frame B30 by a bolt group. The edge of the quick-change positioning plate B31 extends out of the top of the vertical frame B30 to form a plurality of connecting platforms. The outer edge of the connecting platform is provided with mounting notches B310.

[0020] The functional assembly B32 is provided at each mounting slot B310 and includes: a limiting plate B34 that can cover the upper side of the mounting slot B310, a mounting seat B35 or a mounting rod B36 mounted at the bottom of the limiting plate B34, and a spray gun mounted on the mounting seat B35 or the mounting rod B36;

[0021] The locking assembly B33 includes a rotary clamping cylinder B37 provided at the bottom of the quick-change positioning plate B31 and located on both sides of the mounting slot B310. A pressure block B38 is provided on the top output shaft of the rotary clamping cylinder B37.

[0022] The tool end of the robot quick change module is connected to the limit plate B34, and the robot end of the robot quick change module is provided on the robot B2;

[0023] The rotating support frame B4 includes: a support seat B40, a fixed support plate B41, a rotating motor B41, a rotating support bearing B43, a movable support plate B44, a connecting rod B45, a load-bearing plate B46, and a wheel clamp B47;

[0024] The support plate B41 is horizontally fixed to the top of the support seat B40 by a bolt group, and the fixed part of the rotating support bearing B43 is connected to the fixed support plate B41; the rotating motor B41 is installed on the fixed support plate B41 and drives the movable part of the rotating support bearing B43 through the gear B9a; the movable support plate B44 is connected to the movable part of the rotating support bearing B43 by a bolt group, and the load-bearing plate B46 is horizontally arranged above the movable support plate B44; a plurality of connecting rods B45 are evenly arranged between the load-bearing plate B46 and the movable support plate B44 and connected to both by a bolt group;

[0025] The assembled pre-tightening components include a screw supply component C1 and an assembled pre-tightening component C2;

[0026] The screw supply assembly C1 includes: a horizontal mounting platform C10, a conveyor chain belt assembly C11 located on the left and right sides of the horizontal mounting platform C10, and a tray C12 that can be placed on the left and right conveyor chain belt assembly C11;

[0027] The horizontal mounting platform C10 extends in the front-to-back direction, with prefabricated guide rails installed on the left and right sides of its top. The conveyor belt assembly C11 includes a chain belt that slides along the outer side of the prefabricated guide rail, a sprocket located at the end of the horizontal mounting platform C10, and a sprocket drive device. The tray C12 is provided with several bolt positioning holes C12a.

[0028] The combined pre-tightening assembly C2 is arranged on one side of the horizontal mounting platform C10, and includes: a base C20, a four-axis sorting mechanism C21, a pinning mechanism C22, a tightening mechanism C24, and a wheel clamping mechanism C25;

[0029] The base C20 is a double-layer platform structure. Two four-axis sorting mechanisms C21 are located on the upper platform, close to one side of the horizontal mounting platform C10, and two pinning mechanisms C22 are located on the other side. A mounting opening is provided in the middle of the upper platform, and the wheel clamping mechanism C25 is located in the mounting opening. Pre-tightening openings are provided on the front and rear sides of the mounting opening, and the tightening mechanism C24 is located on the lower platform, facing the pre-tightening opening.

[0030] The four-axis sorting mechanism C21 includes: a sorting mounting base C210, a horizontal multi-joint robot C211, and a sorting clamping arm C212; the sorting mounting base C210 is vertically mounted on the base C20, the horizontal multi-joint robot C211 is composed of two horizontal joints and one vertical joint connected in sequence, the horizontal multi-joint robot C211 is mounted on the top of the sorting mounting base C210, and the sorting clamping arm C212 is mounted on the vertical joint of the horizontal multi-joint robot C211; the sorting clamping arm C212 is provided with a rotation output device C2120, and a first vertical cylinder C2121 is installed on the output shaft of the rotation output device C2120, the output shaft of the first vertical cylinder C2121 is downwardly facing, and a pneumatic three-finger gripper C2122 is provided on the output shaft;

[0031] The pinning mechanism C22 includes: a pinning mounting seat C220, a pinning rotary cylinder C221, a pinning rotary arm C222, a pinning linear cylinder C223, and a pinning head C224; the pinning mounting seat C220 is vertically mounted on the base C20, the pinning rotary arm C222 is swingably mounted on the top of the pinning mounting seat C220 through the pinning rotary cylinder C221, the pinning linear cylinder C223 is mounted on the free end of the pinning rotary arm C222, the output shaft of the pinning linear cylinder C223 is downward, the pinning head C224 is mounted on the output shaft of the pinning linear cylinder C223, and a pin fixing hole is provided at the bottom of the pinning head C224;

[0032] The tightening mechanism C24 includes: a linear guide slider group C240, a lifting cylinder C241, a clamping cylinder fixing seat C242, a clamping cylinder C243, a lifting cylinder C245, and a bolt fixing cylinder C246; the linear guide slider group C240 is fixedly arranged on the lower side of the pre-tightening port, the lifting cylinder C241 is installed on the slider, the clamping cylinder fixing seat C242 is installed on the output shaft of the lifting cylinder C241, the clamping cylinder C243 and the lifting cylinder C245 are installed on the top of the clamping cylinder fixing seat C242, bolt clamping rods are installed on the output shafts on both sides of the clamping cylinder C243, and the bolt fixing cylinder C246 is installed on the output shaft of the lifting cylinder C245;

[0033] The wheel clamping mechanism C25 includes: a servo rotary table C250 provided on the base C20, a wheel fixing frame C251 mounted on the top of the servo rotary table C250, a pneumatic chuck C252 and an annular bracket C253 located on the wheel fixing frame C251;

[0034] A rotating shaft driven by a servo motor is installed on the servo rotary table C250, and the wheel holder C251 is installed on the rotating shaft through a connecting structure; the pneumatic chuck C252 is located at the top center of the wheel holder C251, and the annular bracket C253 is sleeved on the outside of the pneumatic chuck C252 and is connected to the wheel holder C251 at the bottom through several lifting cylinders.

[0035] A further improvement or preferred embodiment of the aforementioned wheel brake disc digital production line also includes a truss lifting component, which is located directly above the production line and includes two guide rail frames D1 horizontally and parallelly arranged directly above the production line, a linear guide rail D2 arranged in parallel on each guide rail frame D1, and a mobile overhead crane D3 located on the two guide rail frames D1 and connected by guide rail sliders and driven by gear racks.

[0036] A further improvement or preferred embodiment of the aforementioned wheel brake disc digital production line includes a wheel fixture B47 comprising: a support column B470 fixedly mounted on a movable support plate B44, support arms B471 arranged in a circular array around the support column B470, a rocker arm B472 and a preload spring B473 for connecting the support column B470 and the support arm B471;

[0037] A plurality of inner connecting ears B474 are vertically provided on the side of the support column B470 and each support arm B471 facing each other;

[0038] The support arm B471 includes a C-shaped limiting guide portion B475 and a support portion B476 disposed outside the limiting guide portion B475 and extending horizontally outward;

[0039] The two ends of the C-shaped limiting guide portion B475 extend toward one side of the support arm B471 to form a limiting arm B477. A plurality of external connection ears B478 are provided on the middle part of the C-shaped limiting guide portion B475 toward the support column B470.

[0040] The two ends of the multiple swing rods B472 are respectively connected to the inner connecting ear B474 and the outer connecting ear B478 on the same side, and the swing rods B472 connected to the same support arm B471 are parallel to each other;

[0041] If the tensioning spring B473 is located between two adjacent rocker arms B472, the upper end is connected to the inner connecting ear B474 connected to the upper rocker arm B472, and the lower end is connected to the outer connecting ear B478 connected to the lower rocker arm B472.

[0042] As a further improvement or preferred embodiment of the aforementioned wheel brake disc digital production line, the support column B470 includes a base B4701 and a polyhedron connecting rod B4702 on the top of the base B4701. The outer wall of the polyhedron connecting rod is composed of several evenly arranged vertical planes, and each vertical plane is opposite to a support arm B471.

[0043] A further improvement or preferred embodiment of the aforementioned wheel brake disc digital production line further includes a rail wheel conveyor line located at the end of the production line, including a conveying platform E1, a steering assembly E2, and a rotating lifting assembly E3;

[0044] There are multiple conveying platforms E1 connected by a steering assembly E2 to form a conveying channel; the conveying platform is composed of a vertical frame E10, a roller group E11 evenly arranged on the top of the vertical frame E10, a roller chain E12 for connecting the roller group E11, and a chain drive motor E13 for driving the roller chain E12;

[0045] At least one transfer platform E1 near the input side is the input transfer platform E1a. The middle of the input transfer platform E1a is hollowed out. Support plates E100 are provided on the left and right sides of the hollowed-out area. Roller assemblies E11 are respectively provided between the support plates E100 and the stand E10 on both sides. The rotary lifting assembly E3 is provided in the middle of the hollowed-out area.

[0046] The steering assembly E2 is located between two adjacent conveyor platforms E1 that need to be steered; it includes: a fixed chassis E20, a worm gear transmission module E21, a steering motor E22, a movable bracket E23, a conveyor belt E24, and a conveyor belt drive motor E25;

[0047] The movable bracket E23 is located above the fixed base frame E20 and is connected via a worm gear transmission module E21. The steering motor E22 drives the worm of the worm gear transmission module E21. The conveyor belt E24 is horizontally mounted on the top of the movable bracket E23. The conveyor belt drive motor E25 drives the conveyor belt E24 via a chain belt.

[0048] The rotary lifting assembly E3 includes: a mounting base E30, a worm screw lifter E31, a screw drive motor E32, a nut base E33, a support cylinder E34, a lifting cylinder E35, a mounting plate E36, a turntable E37, and a turntable drive motor E38;

[0049] The mounting seat E30 is fixedly arranged, the support cylinder E34 is fixed on the top of the mounting seat E30, the lifting cylinder E35 is slidably sleeved on the inner side of the support cylinder E34, the turbine screw lift E31 is mounted on the mounting seat E30, and the screw E310 vertically extends into the inner side of the lifting cylinder E35, the screw drive motor E32 is fixed on the mounting seat E30 and is transmission-connected to the turbine screw lift E31; the nut seat E33 is sleeved on the screw E310 and is fixedly connected to the lifting cylinder E35; a guide groove E35a is provided on the outer wall of the lifting cylinder E35, and a mounting hole is provided at the corresponding position of the support cylinder E34, an anti-rotation block E39 is provided in the mounting hole, and the anti-rotation block E39 is fixed in the mounting hole and extends into the guide groove E35a;

[0050] A mounting groove is provided on the top of the lifting cylinder E35. A mounting plate E36 is horizontally fixed to the top of the lifting cylinder E35 and has a through-hole in the middle. A slewing bearing E40 is provided in the mounting groove. A turntable E37 is fixed on the inner disk surface of the slewing bearing E40. A gear is provided on the outer edge of the turntable E37. The turntable drive motor E38 is installed on the mounting plate E36 and is connected to the turntable E37 via a gear E41.

[0051] A further improvement or preferred embodiment of the aforementioned wheel brake disc digital production line also includes a steering guide assembly arranged on the output side of the steering assembly E2, including a guide plate frame E26 extending along the output direction, and a plurality of guide rollers E27 arranged on the guide plate frame E26.

[0052] The worm gear transmission module E21 includes a mounting plate E210 at the bottom and a worm gear assembly inside the mounting plate;

[0053] The mounting seat E30 is a hollow structure with an installation cavity E300 provided inside. A through hole is provided at the top of the installation cavity E300. The turbine screw elevator E31 is provided in the installation cavity E300, and the screw E310 extends vertically upward from the top through hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 This is a top view of the digital production line for wheel brake discs;

[0055] Figure 2 is the front view of the flipped component;

[0056] Figure 3 is a cross-sectional view of the flipped component;

[0057] Figure 4 It is a bottom view of the flipped component;

[0058] Figure 5 It is a structural diagram of the quick-change rack in the spraying component;

[0059] Figure 6It is a structural diagram of the rotating support frame in the spraying component;

[0060] Figure 7 It is a schematic diagram of the structure of the wheel fixture in the rotating support frame;

[0061] Figure 8 It is a schematic diagram of assembling pre-tightened parts;

[0062] Figure 9 It is a front view of the assembled pre-tightened components;

[0063] Figure 10 This is a top view of the assembled pre-tightened components;

[0064] Figure 11 It is a cross-sectional view of the assembled pre-tightened components;

[0065] Figure 12 This is an oblique view of the assembled pre-tightened components;

[0066] Figure 13 It is a schematic diagram of the rail wheel conveyor line;

[0067] Figure 14 It is a structural diagram of the steering assembly;

[0068] Figure 15 It is a structural diagram of the rotary lifting assembly;

[0069] Figure 16 is a cross-sectional view of the rotary lift assembly. DETAILED DESCRIPTION

[0070] The present invention is described in detail below with reference to specific embodiments.

[0071] The present invention relates to a digital production line for wheel brake discs, which is mainly used for a series of tasks such as inspection, maintenance, assembly and production of wheel brake discs.

[0072] like Figure 1 As shown, its core structure includes a turning part A0, a spraying part B0, and an assembly and pre-tightening part C0 arranged in sequence along the production line;

[0073] like Figures 2 to 4 As shown, the flipping components include a bottom support assembly A1, a lifting support assembly A2, a clamping flip assembly A3, a wheel rotation assembly A4, and a horizontal drive assembly A5;

[0074] The bottom support assembly A1 includes: a bottom frame A10, a transverse guide rail A11, a horizontal sliding plate frame A12, and an intermediate fixed plate frame A13;

[0075] The middle fixed plate frame A13 is fixedly set in the middle of the base frame A10, and two sets of transverse guide rails A11 are symmetrically arranged on the left and right sides of the middle fixed plate frame A13. Two horizontal sliding plate frames A12 are movably connected to the transverse guide rails A11 through sliders;

[0076] The lifting support assembly A2 includes: a vertical frame A20, a vertical screw A21, and a vertical guide rail A22;

[0077] Two vertical frames A20 are fixedly arranged on the upper sides of the two horizontal sliding plates A12, and the vertical screws A21 are vertically installed inside the vertical frames A20; two sets of vertical guide rails A22 are arranged on one side of the two vertical frames A20 facing the middle fixed plate A13 and are arranged vertically;

[0078] The two clamping and flipping assemblies A3 are respectively installed on the two vertical frames A20; the clamping and flipping assemblies A3 include: a vertical sliding plate frame A30, an electric turntable A31, a clamping arm A32, and a clamping wheel A33;

[0079] The vertical sliding plate frame A30 is connected to the vertical guide rail A22 via a slider. A first nut seat A300 is provided on the outer surface of the vertical sliding plate frame A30, and the first nut seat A300 is sleeved on the vertical lead screw A21. The electric turntable A31 is provided on the inner surface of the vertical sliding plate frame A30, with its rotating axis pointing horizontally toward the side of the intermediate fixed plate frame A13. The clamping arm A32 is fixed to the rotating disk surface of the electric turntable A31. The clamping arm A32 has a Y-shaped structure, and two clamping wheels A33 are respectively mounted on the forked end portions of the clamping arm A32. The central portion of the clamping wheel A33 has an annular positioning groove A33a.

[0080] The wheel rotation assembly A4 includes: a support cylinder A40, a first motor A41, a gear set A42, and a wheel positioning member A43;

[0081] The support cylinder A40 is vertically fixed on the intermediate fixed plate frame A13. The first motor A41 is disposed on the outer wall of the support cylinder A40 and near the upper end. The gear set A42 includes a main gear A420 and a slave gear A421. The main gear A420 is mounted on the output shaft of the first motor A41. The slave gear A421 is transmission-connected to the main gear A420 and rotatably disposed on the top of the support cylinder A40. The wheel positioning member A43 is fixedly disposed on the slave gear A421.

[0082] The horizontal drive assembly A5 is provided at the bottom of the chassis A10 and includes: a transverse screw A50, a second nut seat A51, a second motor A52, a third motor A53, a universal joint coupling A54, and a commutator A55;

[0083] The second motor A52 drives the horizontal screw A50 to rotate, and the second nut seat A51 is sleeved on the horizontal screw A50 and connected to the bottom of the horizontal sliding plate frame A12;

[0084] The third motor A53 is connected to the vertical screw A21 through a universal joint coupling A54 and a commutator A55;

[0085] The spraying components include a spraying room B1 and a robot B2, a quick-change rack B3, and a rotating support rack B4 located in the spraying room B1;

[0086] like Figure 5 As shown, the quick-change frame B3 includes: a stand B30, a quick-change positioning plate B31, a functional component B32, and a locking component B33;

[0087] The quick-change positioning plate B31 is set horizontally and fixed to the top of the vertical frame B30 by a bolt group. The edge of the quick-change positioning plate B31 extends out of the top of the vertical frame B30 to form a plurality of connecting platforms. The outer edge of the connecting platform is provided with mounting notches B310.

[0088] The functional assembly B32 is provided at each mounting slot B310 and includes: a limiting plate B34 that can cover the upper side of the mounting slot B310, a mounting seat B35 or a mounting rod B36 mounted at the bottom of the limiting plate B34, and a spray gun mounted on the mounting seat B35 or the mounting rod B36;

[0089] The locking assembly B33 includes a rotary clamping cylinder B37 provided at the bottom of the quick-change positioning plate B31 and located on both sides of the mounting slot B310. A pressure block B38 is provided on the top output shaft of the rotary clamping cylinder B37.

[0090] The tool end of the robot quick change module is connected to the limit plate B34, and the robot end of the robot quick change module is provided on the robot B2;

[0091] like Figure 6 As shown, the rotating support frame B4 includes: a support base B40, a fixed support plate B41, a rotating motor B41, a rotating support bearing B43, a movable support plate B44, a connecting rod B45, a load-bearing plate B46, and a wheel clamp B47;

[0092] The support plate B41 is horizontally fixed to the top of the support seat B40 by a bolt group, and the fixed part of the rotating support bearing B43 is connected to the fixed support plate B41; the rotating motor B41 is installed on the fixed support plate B41 and drives the movable part of the rotating support bearing B43 through the gear B9a; the movable support plate B44 is connected to the movable part of the rotating support bearing B43 by a bolt group, and the load-bearing plate B46 is horizontally arranged above the movable support plate B44; a plurality of connecting rods B45 are evenly arranged between the load-bearing plate B46 and the movable support plate B44 and connected to both by a bolt group;

[0093] The assembled pre-tightening components include a screw supply component C1 and an assembled pre-tightening component C2;

[0094] like Figure 8 As shown, the screw supply assembly C1 includes: a horizontal mounting platform C10, a conveyor chain belt assembly C11 located on the left and right sides of the horizontal mounting platform C10, and a tray C12 that can be placed on the left and right conveyor chain belt assembly C11;

[0095] The horizontal mounting platform C10 extends in the front-to-back direction, with prefabricated guide rails installed on the left and right sides of its top. The conveyor belt assembly C11 includes a chain belt that slides along the outer side of the prefabricated guide rail, a sprocket located at the end of the horizontal mounting platform C10, and a sprocket drive device. The tray C12 is provided with several bolt positioning holes C12a.

[0096] like Figures 9 to 12 As shown, the combined pre-tightening assembly C2 is arranged on one side of the horizontal mounting platform C10, and includes: a base C20, a four-axis sorting mechanism C21, a pinning mechanism C22, a tightening mechanism C24, and a wheel clamping mechanism C25;

[0097] The base C20 is a double-layer platform structure. Two four-axis sorting mechanisms C21 are located on the upper platform, close to one side of the horizontal mounting platform C10, and two pinning mechanisms C22 are located on the other side. A mounting opening is provided in the middle of the upper platform, and the wheel clamping mechanism C25 is located in the mounting opening. Pre-tightening openings are provided on the front and rear sides of the mounting opening, and the tightening mechanism C24 is located on the lower platform, facing the pre-tightening opening.

[0098] The four-axis sorting mechanism C21 includes: a sorting mounting base C210, a horizontal multi-joint robot C211, and a sorting clamping arm C212; the sorting mounting base C210 is vertically mounted on the base C20, the horizontal multi-joint robot C211 is composed of two horizontal joints and one vertical joint connected in sequence, the horizontal multi-joint robot C211 is mounted on the top of the sorting mounting base C210, and the sorting clamping arm C212 is mounted on the vertical joint of the horizontal multi-joint robot C211; the sorting clamping arm C212 is provided with a rotation output device C2120, and a first vertical cylinder C2121 is installed on the output shaft of the rotation output device C2120, the output shaft of the first vertical cylinder C2121 is downwardly facing, and a pneumatic three-finger gripper C2122 is provided on the output shaft;

[0099] The pinning mechanism C22 includes: a pinning mounting seat C220, a pinning rotary cylinder C221, a pinning rotary arm C222, a pinning linear cylinder C223, and a pinning head C224; the pinning mounting seat C220 is vertically mounted on the base C20, the pinning rotary arm C222 is swingably mounted on the top of the pinning mounting seat C220 through the pinning rotary cylinder C221, the pinning linear cylinder C223 is mounted on the free end of the pinning rotary arm C222, the output shaft of the pinning linear cylinder C223 is downward, the pinning head C224 is mounted on the output shaft of the pinning linear cylinder C223, and a pin fixing hole is provided at the bottom of the pinning head C224;

[0100] The tightening mechanism C24 includes: a linear guide slider group C240, a lifting cylinder C241, a clamping cylinder fixing seat C242, a clamping cylinder C243, a lifting cylinder C245, and a bolt fixing cylinder C246; the linear guide slider group C240 is fixedly arranged on the lower side of the pre-tightening port, the lifting cylinder C241 is installed on the slider, the clamping cylinder fixing seat C242 is installed on the output shaft of the lifting cylinder C241, the clamping cylinder C243 and the lifting cylinder C245 are installed on the top of the clamping cylinder fixing seat C242, bolt clamping rods are installed on the output shafts on both sides of the clamping cylinder C243, and the bolt fixing cylinder C246 is installed on the output shaft of the lifting cylinder C245;

[0101] The wheel clamping mechanism C25 includes: a servo rotary table C250 provided on the base C20, a wheel fixing frame C251 mounted on the top of the servo rotary table C250, a pneumatic chuck C252 and an annular bracket C253 located on the wheel fixing frame C251;

[0102] A rotating shaft driven by a servo motor is installed on the servo rotary table C250, and the wheel holder C251 is installed on the rotating shaft through a connecting structure; the pneumatic chuck C252 is located at the top center of the wheel holder C251, and the annular bracket C253 is sleeved on the outside of the pneumatic chuck C252 and is connected to the wheel holder C251 at the bottom through several lifting cylinders.

[0103] like Figure 1 As shown, it also includes a truss lifting component, which is located directly above the production line and includes two guide rail frames D1 arranged horizontally and in parallel directly above the production line, a linear guide rail D2 arranged in parallel on each guide rail frame D1, and a mobile overhead crane D3 located on the two guide rail frames D1 and connected by guide rail sliders and driven by gear racks.

[0104] like Figure 7 As shown, the wheel clamp B47 includes: a support column B470 fixedly mounted on the movable support plate B44, support arms B471 arranged in a circular array around the support column B470, a rocker rod B472 and a preload spring B473 for connecting the support column B470 and the support arms B471;

[0105] A plurality of inner connecting ears B474 are vertically provided on the side of the support column B470 and each support arm B471 facing each other;

[0106] The support arm B471 includes a C-shaped limiting guide portion B475 and a support portion B476 disposed outside the limiting guide portion B475 and extending horizontally outward;

[0107] The two ends of the C-shaped limiting guide portion B475 extend toward one side of the support arm B471 to form a limiting arm B477. A plurality of external connection ears B478 are provided on the middle part of the C-shaped limiting guide portion B475 toward the support column B470.

[0108] The two ends of the multiple swing rods B472 are respectively connected to the inner connecting ear B474 and the outer connecting ear B478 on the same side, and the swing rods B472 connected to the same support arm B471 are parallel to each other;

[0109] If the tensioning spring B473 is located between two adjacent rocker arms B472, the upper end is connected to the inner connecting ear B474 connected to the upper rocker arm B472, and the lower end is connected to the outer connecting ear B478 connected to the lower rocker arm B472.

[0110] The support column B470 includes a base B4701 and a polyhedron connecting rod B4702 on the top of the base B4701. The outer wall of the polyhedron connecting rod is composed of several evenly arranged vertical planes, and each vertical plane is opposite to a support arm B471.

[0111] like Figure 1 、 Figures 13-16 As shown, it also includes a rail wheel conveyor line located at the end of the production line, including a conveying platform E1, a steering assembly E2, and a rotating lifting assembly E3;

[0112] There are multiple conveying platforms E1 connected by a steering assembly E2 to form a conveying channel; the conveying platform is composed of a vertical frame E10, a roller group E11 evenly arranged on the top of the vertical frame E10, a roller chain E12 for connecting the roller group E11, and a chain drive motor E13 for driving the roller chain E12;

[0113] At least one transfer platform E1 near the input side is the input transfer platform E1a. The middle of the input transfer platform E1a is hollowed out. Support plates E100 are provided on the left and right sides of the hollowed-out area. Roller assemblies E11 are respectively provided between the support plates E100 and the stand E10 on both sides. The rotary lifting assembly E3 is provided in the middle of the hollowed-out area.

[0114] The steering assembly E2 is located between two adjacent conveyor platforms E1 that need to be steered; it includes: a fixed chassis E20, a worm gear transmission module E21, a steering motor E22, a movable bracket E23, a conveyor belt E24, and a conveyor belt drive motor E25;

[0115] The movable bracket E23 is located above the fixed base frame E20 and is connected via a worm gear transmission module E21. The steering motor E22 drives the worm of the worm gear transmission module E21. The conveyor belt E24 is horizontally mounted on the top of the movable bracket E23. The conveyor belt drive motor E25 drives the conveyor belt E24 via a chain belt.

[0116] The rotary lifting assembly E3 includes: a mounting base E30, a worm screw lifter E31, a screw drive motor E32, a nut base E33, a support cylinder E34, a lifting cylinder E35, a mounting plate E36, a turntable E37, and a turntable drive motor E38;

[0117] The mounting seat E30 is fixedly arranged, the support cylinder E34 is fixed on the top of the mounting seat E30, the lifting cylinder E35 is slidably sleeved on the inner side of the support cylinder E34, the turbine screw lift E31 is mounted on the mounting seat E30, and the screw E310 vertically extends into the inner side of the lifting cylinder E35, the screw drive motor E32 is fixed on the mounting seat E30 and is in transmission connection with the turbine screw lift E31; the nut seat E33 is sleeved on the screw E310 and is fixedly connected to the lifting cylinder E35; a guide groove E35a is provided on the outer wall of the lifting cylinder E35, and a mounting hole is provided at the corresponding position of the support cylinder E34, an anti-rotation block E39 is provided in the mounting hole, and the anti-rotation block E39 is fixed in the mounting hole and extends into the guide groove E35a;

[0118] A mounting groove is provided on the top of the lifting cylinder E35. A mounting plate E36 is horizontally fixed to the top of the lifting cylinder E35 and has a through-hole in the middle. A slewing bearing E40 is provided in the mounting groove. A turntable E37 is fixed on the inner disk surface of the slewing bearing E40. A gear is provided on the outer edge of the turntable E37. The turntable drive motor E38 is installed on the mounting plate E36 and is connected to the turntable E37 via a gear E41.

[0119] It also includes a steering guide assembly arranged on the output side of the steering assembly E2, including a guide plate frame E26 extending along the output direction, and a plurality of guide rollers E27 arranged on the guide plate frame E26.

[0120] The worm gear transmission module E21 includes a mounting plate E210 at the bottom and a worm gear assembly inside the mounting plate;

[0121] The mounting seat E30 is a hollow structure with an installation cavity E300 provided inside. A through hole is provided at the top of the installation cavity E300. The turbine screw elevator E31 is provided in the installation cavity E300, and the screw E310 extends vertically upward from the top through hole.

[0122] The wheel brake disc digital production line of the present invention is mainly based on the existing production line structure. By adopting a brand-new wheel flipping, transfer and assembly structure, it further improves the automation level of the production line and improves the continuous production operation capacity, while effectively reducing the proportion of manual labor and improving the safety of production line operations.

[0123] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A wheel brake disc digital production line, characterized by: It includes flipping parts, spraying parts, and assembly and pre-tightening parts arranged in sequence along the production line; The turning components include a bottom support assembly (A1), a lifting support assembly (A2), a clamping turning assembly (A3), a wheel rotation assembly (A4), and a horizontal driving assembly (A5); The bottom support assembly (A1) includes: a bottom frame (A10), a transverse guide rail (A11), a horizontal sliding plate frame (A12), and an intermediate fixed plate frame (A13); The middle fixed plate frame (A13) is fixedly arranged in the middle of the bottom frame (A10), two sets of transverse guide rails (A11) are symmetrically arranged on the left and right sides of the middle fixed plate frame (A13), and two horizontal sliding plate frames (A12) are movably connected to the transverse guide rails (A11) through sliders; The lifting support assembly (A2) includes: a vertical frame (A20), a vertical lead screw (A21), and a vertical guide rail (A22); Two vertical frames (A20) are fixedly arranged on the upper sides of two horizontal sliding plate frames (A12), and a vertical screw (A21) is vertically installed inside the vertical frames (A20); two sets of vertical guide rails (A22) are arranged on one side of the two vertical frames (A20) facing the middle fixed plate frame (A13) and are arranged vertically; Two clamping and flipping assemblies (A3) are respectively installed on two vertical frames (A20); the clamping and flipping assemblies (A3) include: a vertical sliding plate frame (A30), an electric turntable (A31), a clamping arm (A32), and a clamping wheel (A33); The vertical sliding plate frame (A30) is connected to the vertical guide rail (A22) through a slider. A first nut seat (A300) is provided on the outer plate surface of the vertical sliding plate frame (A30), and the first nut seat (A300) is sleeved on the vertical lead screw (A21); the electric turntable (A31) is provided on the inner plate surface of the vertical sliding plate frame (A30), and its rotation axis is horizontally directed to one side of the middle fixed plate frame (A13); the clamping arm (A32) is fixed on the rotating disk surface of the electric turntable (A31), the clamping arm (A32) is a Y-shaped structure, and two clamping wheels (A33) are respectively installed on the fork of the end portion of the clamping arm (A32), and the middle portion of the clamping wheel (A33) is provided with an annular positioning groove (A33a); The wheel rotation assembly (A4) includes: a support cylinder (A40), a first motor (A41), a gear set (A42), and a wheel positioning member (A43); The support cylinder (A40) is vertically fixed on the intermediate fixed plate frame (A13); the first motor (A41) is arranged on the outer wall of the support cylinder (A40) and near the upper end; the gear set (A42) includes a main gear (A420) and a slave gear (A421); the main gear (A420) is mounted on the output shaft of the first motor (A41); the slave gear (A421) is transmission-connected to the main gear (A420) and rotatably arranged on the top of the support cylinder (A40); and the wheel positioning member (A43) is fixedly arranged on the slave gear (A421); The horizontal drive assembly (A5) is arranged at the bottom of the base frame (A10), and includes: a transverse screw (A50), a second nut seat (A51), a second motor (A52), a third motor (A53), a universal joint coupling (A54), and a commutator (A55); The second motor (A52) drives the transverse screw (A50) to rotate, and the second nut seat (A51) is sleeved on the transverse screw (A50) and connected to the bottom of the horizontal sliding plate frame (A12); The third motor (A53) is connected to the vertical lead screw (A21) through a universal joint coupling (A54) and a commutator (A55); The spraying component includes a spraying room (B1) and a robot (B2), a quick-change frame (B3), and a rotating support frame (B4) arranged in the spraying room (B1), wherein the quick-change frame (B3) includes: a stand (B30), a quick-change positioning plate (B31), a functional component (B32), and a locking component (B33); The quick-change positioning plate (B31) is horizontally arranged and fixed to the top of the vertical frame (B30) by a bolt group. The edge of the quick-change positioning plate (B31) extends out of the top of the vertical frame (B30) to form a plurality of connecting platforms. The outer edges of the connecting platforms are provided with mounting notches (B310); The functional components (B32) are arranged on each mounting slot (B310), and include: a limiting plate (B34) that can cover the upper side of the mounting slot (B310), a mounting seat (B35) or a mounting rod (B36) mounted on the bottom of the limiting plate (B34), and a spray gun arranged on the mounting seat (B35) or the mounting rod (B36); The locking assembly (B33) includes a rotary clamping cylinder (B37) provided at the bottom of the quick-change positioning plate (B31) and located on both sides of the mounting slot (B310), and a pressure block (B38) is provided on the top output shaft of the rotary clamping cylinder (B37); The tool end of the robot quick-change module is connected to the limiting plate (B34), and the robot end of the robot quick-change module is provided on the robot (B2); The rotating support frame (B4) includes: a support seat (B40), a fixed support plate (B41), a rotating motor (B41), a rotating support bearing (B43), a movable support plate (B44), a connecting rod (B45), a load-bearing plate (B46), and a wheel fixture (B47); The support plate (B41) is horizontally fixed to the top of the support seat (B40) by a bolt group, and the fixed part of the rotating support bearing (B43) is connected to the fixed support plate (B41); the rotating motor (B41) is installed on the fixed support plate (B41) and drives the movable part of the rotating support bearing (B43) through the gear (B9a); the movable support plate (B44) and the movable part of the rotating support bearing (B43) are connected by a bolt group, and the load-bearing plate (B46) is horizontally arranged above the movable support plate (B44); a plurality of connecting rods (B45) are evenly arranged between the load-bearing plate (B46) and the movable support plate (B44) and connected to the two by a bolt group; The assembled pre-tightening components include a screw supply component (C1) and an assembled pre-tightening component (C2); The screw supply assembly (C1) includes: a horizontal mounting platform (C10), a conveyor chain belt assembly (C11) located on the left and right sides of the horizontal mounting platform (C10), and a tray (C12) that can be placed on the left and right conveyor chain belt assembly (C11); The horizontal mounting platform (C10) extends in the front-to-back direction, and prefabricated guide rails are provided on the left and right sides of the top of the platform; the conveyor belt assembly (C11) includes a chain belt that is sleeved on the outside of the prefabricated guide rail and can slide along the prefabricated guide rail, and a sprocket and a sprocket drive device located at the end of the horizontal mounting platform (C10); a plurality of bolt positioning holes (C12a) are provided on the tray (C12); The combined pre-tightening assembly (C2) is arranged on one side of the horizontal mounting platform (C10), and includes: a base (C20), a four-axis sorting mechanism (C21), a pinning mechanism (C22), a tightening mechanism (C24), and a wheel clamping mechanism (C25); The base (C20) is a double-layer platform structure. Two four-axis sorting mechanisms (C21) are arranged on one side of the upper platform close to the horizontal mounting platform (C10), and two pressing pin mechanisms (C22) are arranged on the other side. A mounting opening is provided in the middle of the upper platform, and a wheel clamping mechanism (C25) is provided in the mounting opening. Pre-tightening openings are provided on the front and rear sides of the mounting opening, and a tightening mechanism (C24) is provided on the lower platform and directly opposite the pre-tightening opening. The four-axis sorting mechanism (C21) comprises: a sorting mounting base (C210), a horizontal multi-joint robot (C211), and a sorting clamping arm (C212); the sorting mounting base (C210) is vertically mounted on the base (C20); the horizontal multi-joint robot (C211) is composed of two horizontal joints and one vertical joint connected in sequence; the horizontal multi-joint robot (C211) is mounted on the top of the sorting mounting base (C210); and the sorting clamping arm (C212) is mounted on the vertical joint of the horizontal multi-joint robot (C211); a rotary output device (C2120) is provided on the sorting clamping arm (C212); a first vertical cylinder (C2121) is mounted on the output shaft of the rotary output device (C2120); the output shaft of the first vertical cylinder (C2121) is downwardly directed and a pneumatic three-finger clamp (C2122) is provided on the output shaft; The pin pressing mechanism (C22) comprises: a pin pressing mounting seat (C220), a pin pressing rotating cylinder (C221), a pin pressing rotating arm (C222), a pin pressing linear cylinder (C223), and a pin pressing head (C224); the pin pressing mounting seat (C220) is vertically mounted on the base (C20); the pin pressing rotating arm (C222) is swingably mounted on the top of the pin pressing mounting seat (C220) via the pin pressing rotating cylinder (C221); the pin pressing linear cylinder (C223) is mounted on the free end of the pin pressing rotating arm (C222); the output shaft of the pin pressing linear cylinder (C223) is downwardly directed; the pin pressing head (C224) is mounted on the output shaft of the pin pressing linear cylinder (C223); and a pin fixing hole is provided at the bottom of the pin pressing head (C224); The tightening mechanism (C24) includes: a linear guide slider group (C240), a lifting cylinder (C241), a clamping cylinder fixing seat (C242), a clamping cylinder (C243), a lifting cylinder (C245), and a bolt fixing tube (C246); the linear guide slider group (C240) is fixedly arranged on the lower side of the pre-tightening mouth, the lifting cylinder (C241) is installed on the slider, the clamping cylinder fixing seat (C242) is installed on the output shaft of the lifting cylinder (C241), the clamping cylinder (C243) and the lifting cylinder (C245) are installed on the top of the clamping cylinder fixing seat (C242), bolt clamping rods are installed on the output shafts on both sides of the clamping cylinder (C243), and the bolt fixing tube (C246) is installed on the output shaft of the lifting cylinder (C245); The wheel clamping mechanism (C25) comprises: a servo rotating platform (C250) provided on a base (C20), a wheel fixing frame (C251) installed on the top of the servo rotating platform (C250), a pneumatic chuck (C252) and an annular bracket (C253) located on the wheel fixing frame (C251); A rotating shaft driven by a servo motor is installed on the servo rotary table (C250), and a wheel fixing frame (C251) is installed on the rotating shaft through a connecting structure; a pneumatic chuck (C252) is located at the top center of the wheel fixing frame (C251), and a ring bracket (C253) is sleeved on the outside of the pneumatic chuck (C252) and is connected to the wheel fixing frame (C251) at the bottom through a plurality of lifting cylinders.

2. The wheel brake disc digital production line according to claim 1 is characterized in that: The invention also includes a truss hoisting component, which is located directly above the production line and includes two guide rail frames (D1) horizontally arranged directly above the production line and arranged in parallel, a linear guide rail (D2) arranged in parallel on each guide rail frame (D1), and a mobile overhead crane (D3) located on the two guide rail frames (D1) and connected by guide rail sliders and driven by gear racks.

3. The wheel brake disc digital production line according to claim 1 is characterized in that: The wheel clamp (B47) includes: a support column (B470) fixedly mounted on a movable support plate (B44), support arms (B471) arranged in a circular array around the support column (B470), a rocker (B472) and a preload spring (B473) for connecting the support column (B470) and the support arms (B471); A plurality of inner connection ears (B474) are vertically arranged on the side opposite to each support arm (B471) of the support column (B470); The support arm (B471) includes a C-shaped limiting guide portion (B475) and a supporting portion (B476) arranged outside the limiting guide portion (B475) and extending horizontally outward; Both ends of the C-shaped limiting guide portion (B475) extend toward one side of the support arm (B471) to form a limiting arm (B477); a middle portion of the C-shaped limiting guide portion (B475) facing the support column (B470) is provided with a plurality of external connection ears (B478); The two ends of the plurality of swing rods (B472) are respectively connected to the inner connecting ear (B474) and the outer connecting ear (B478) on the same side, and the swing rods (B472) connected to the same support arm (B471) are parallel to each other; If the tensioning spring (B473) is located between two adjacent swing rods (B472), the upper end is connected to the inner connecting ear (B474) connected to the upper swing rod (B472), and the lower end is connected to the outer connecting ear (B478) connected to the lower swing rod (B472).

4. The wheel brake disc digital production line according to claim 1 is characterized in that: The support column (B470) includes a base (B4701) and a polyhedron connecting rod (B4702) on the top of the base (B4701). The outer wall of the polyhedron connecting rod is a number of evenly arranged vertical planes, and each vertical plane is opposite to a support arm (B471).

5. The wheel brake disc digital production line according to claim 1 is characterized in that: It also includes a rail wheel conveyor line located at the end of the production line, including a conveying platform (E1), a steering assembly (E2), and a rotating lifting assembly (E3); There are multiple conveying platforms (E1) and they are connected through a steering assembly (E2) to form a conveying channel; The conveying platform is composed of a stand (E10), a roller group (E11) evenly arranged on the top of the stand (E10), a roller chain (E12) for connecting the roller group (E11), and a chain drive motor (E13) for driving the roller chain (E12); At least one conveying platform (E1) near the input side is an input conveying platform (E1a), the middle portion of the input conveying platform (E1a) is hollowed out, support plates (E100) are provided on the left and right sides of the hollowed-out area, roller assemblies (E11) are respectively provided between the support plates (E100) and the stand (E10) on both sides, and a rotary lifting assembly (E3) is provided in the middle of the hollowed-out area; The steering assembly (E2) is arranged between two adjacent conveying platforms (E1) that need to be steered; it includes: a fixed chassis (E20), a worm gear transmission module (E21), a steering motor (E22), a movable bracket (E23), a conveyor belt (E24), and a conveyor belt drive motor (E25); The movable bracket (E23) is located above the fixed base frame (E20) and is connected via a worm gear transmission module (E21). The steering motor (E22) drives the worm of the worm gear transmission module (E21). The conveyor belt (E24) is horizontally installed on the top of the movable bracket (E23). The conveyor belt drive motor (E25) drives the conveyor belt (E24) via a chain belt. The rotary lifting assembly (E3) includes: a mounting base (E30), a turbine screw lifter (E31), a screw drive motor (E32), a nut base (E33), a support cylinder (E34), a lifting cylinder (E35), a mounting plate (E36), a turntable (E37), and a turntable drive motor (E38); The mounting seat (E30) is fixedly arranged, the support tube (E34) is fixed on the top of the mounting seat (E30), the lifting tube (E35) is slidably sleeved on the inner side of the support tube (E34) up and down, the turbine screw elevator (E31) is mounted on the mounting seat (E30), and the screw (E310) vertically extends into the inner side of the lifting tube (E35), the screw drive motor (E32) is fixed on the mounting seat (E30) and is transmission-connected with the turbine screw elevator (E31); the nut seat (E33) is sleeved on the screw (E310) and is fixedly connected to the lifting tube (E35); a guide groove (E35a) is provided on the outer wall of the lifting tube (E35), and a mounting hole is provided at a corresponding position of the support tube (E34), an anti-rotation block (E39) is provided in the mounting hole, and the anti-rotation block (E39) is fixed in the mounting hole and extends into the guide groove (E35a); A mounting groove is provided on the top of the lifting cylinder (E35); a mounting plate (E36) is horizontally fixed on the top of the lifting cylinder (E35) and has a through hole in the middle; a slewing bearing (E40) is provided in the mounting groove; a turntable (E37) is fixed on the inner disk surface of the slewing bearing (E40); a gear is provided on the outer edge of the turntable (E37); a turntable drive motor (E38) is installed on the mounting plate (E36) and is connected to the turntable (E37) through a gear (E41).

6. The wheel brake disc digital production line according to claim 5 is characterized in that: It also includes a steering guide assembly arranged on the output side of the steering assembly (E2), including a guide plate frame (E26) extending along the output direction, and a plurality of guide rollers (E27) arranged on the guide plate frame (E26). The worm gear transmission module (E21) includes a mounting plate (E210) at the bottom, and a worm gear assembly inside the mounting plate; The mounting seat (E30) is a hollow structure with a mounting cavity (E300) provided inside. A through hole is provided at the top of the mounting cavity (E300). The turbine screw elevator (E31) is arranged in the mounting cavity (E300), and the screw (E310) extends vertically upward from the top through hole.

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