Rotary spraying device

Abstract

The present invention discloses a rotary spraying device, comprising a driving gear part, a sun gear part, a planetary gear part, a support plate and an auxiliary support part; the driving gear part comprises an annular inner gear ring part; the annular inner gear ring part comprises an annular inner gear ring part body and an annular side wall, and the inner surface of the annular side wall forms annular inner teeth; the sun gear part comprises a sun gear part body; the outer surface of the sun gear part body forms annular outer teeth; the planetary gear part comprises a fixed section, a gear shaft and a first fastening section connected in sequence, and the planetary gear is sleeved on the gear shaft; the planetary gear is arranged between the annular inner teeth and the annular outer teeth and meshes with the annular inner teeth and the annular outer teeth respectively; the support plate is mounted on the sun gear part; and the auxiliary support part is mounted on the support plate. The rotary spraying device of the present invention can improve the spraying efficiency.

Description

Technical Field

[0001] The invention relates to a rotary spraying device, in particular to a plasma rotary spraying device for a flat workpiece. Background Art

[0002] Plasma spraying technology uses plasma arc as a heat source to heat the spray powder of ceramics, alloys, metals, etc. to a molten or semi-molten state, accelerates the plasma jet ejected from the nozzle, and sprays it onto the surface of the pre-treated workpiece at a certain speed to form a firm coating.

[0003] At present, the spraying device used for plasma spraying is generally suitable for cylindrical workpieces. During the spraying process, the tail end of the workpiece is placed on the rotating spindle to achieve rotary spraying on the outer surface of the workpiece. After the single-sided spraying of the flat workpiece is completed, it needs to be manually turned over to spray other surfaces, which greatly affects the spraying efficiency and spraying quality.

[0004] CN104722433A discloses a rotary spraying device, including a base, a motor installed in the base, a workbench provided on the top of the base, a rotating disk provided on the workbench, a rotating shaft provided at the bottom of the rotating disk, the rotating shaft of the rotating disk extending downward from the workbench, the output shaft of the motor connected to the lower end of the rotating shaft of the rotating disk through a coupling, a plurality of clamping seats evenly provided on the rotating disk, a plurality of positioning holes evenly provided on the upper surface of each clamping seat along the circumferential direction, a cam and a positioning plate fixed on each clamping seat, the cam having a cam fixing hole, the cam also having a pointed top away from the cam fixing hole, the positioning plate can be fixed on the clamping seat through the positioning hole on the clamping seat, and the pointed top of the cam can cooperate with the positioning plate to clamp the workpiece to be sprayed. The spraying efficiency in this patent document still needs to be improved.

[0005] CN211170834U discloses an improved plasma spraying equipment, including a control unit, a spray gun and a target turntable for clamping a workpiece, a walking mechanism is arranged on one side of the target turntable, the walking mechanism is provided with a walking track and a walking trolley, the walking track is arranged in parallel on one side of the target turntable, the walking trolley is movably installed on the walking track, the spray gun is fixedly installed on the walking trolley, the walking track is provided with a walking drive rack, and the walking drive rack is extended along the length direction of the spraying equipment; the walking trolley is provided with a walking drive motor, the walking drive motor has an output shaft, the output shaft is connected with a walking drive gear, and the walking drive gear is meshed with the walking drive rack. The patent document improves the accuracy of spraying by spray gun walking, but its spraying efficiency still needs to be improved.

[0006] CN204996618U discloses a gear self-centering spraying fixture, including a wheel seat, a plurality of evenly distributed and outwardly extending rotating rods are arranged on the wheel seat, a positioning rod is arranged on the rotating rod, a central gear and a plurality of planetary gears are arranged on the wheel seat, the planetary gears are evenly distributed around the central gear and connected to the central gear, and the planetary gears are connected to the rotating rods. This patent document is more suitable for the spraying of pots, and the spraying efficiency still needs to be improved.

[0007] CN211190700U discloses a spraying device that simultaneously revolves and rotates, including a revolving shaft, a rotating shaft, and a revolving base, wherein the rotating shaft is arranged on the revolving base, the rotating shaft is rotatably connected to the revolving base, the revolving shaft and the rotating shaft do not overlap, the revolving shaft is connected to the revolving base, a sun gear is arranged on the revolving shaft, a planetary gear is arranged on the rotating shaft, and the sun gear meshes with the planetary gear. The spraying efficiency of this patent document still needs to be improved. Summary of the invention

[0008] In view of this, the object of the present invention is to provide a rotary spraying device, which can improve the spraying efficiency and the uniformity of the coating thickness.

[0009] The present invention achieves the above-mentioned purpose through the following technical solutions.

[0010] The present invention provides a rotary spraying device, which comprises a driving gear part, a sun gear part, a planetary gear part, a supporting plate and an auxiliary supporting part;

[0011] The driving gear part includes a motor shaft part, a connecting part and an annular inner gear ring part which are connected in sequence; wherein,

[0012] One end of the motor shaft away from the connecting portion is connected to the motor;

[0013] The annular inner gear ring portion comprises an annular inner gear ring portion body and an annular side wall, the annular inner gear ring portion body is connected to an end of the connecting portion away from the motor shaft portion, a through hole is arranged at the center of the annular inner gear ring portion body; the annular side wall is vertically arranged on the annular inner gear ring portion body; the inner surface of the annular side wall forms an annular inner tooth;

[0014] The connecting portion is provided with a positioning hole along the axial direction, which is used to axially position the sun gear portion; the positioning hole is connected to the through hole of the annular inner gear ring portion body;

[0015] The sun gear part comprises a shaft head, a sun gear part body, a shaft body section and a positioning platform which are connected in sequence; the outer diameter of the positioning platform is smaller than the outer diameter of the shaft body section, and the outer diameter of the shaft body section is smaller than the outer diameter of the sun gear part body; the shaft head is configured to be inserted into the positioning hole; the outer surface of the sun gear part body forms an annular outer tooth; the outer diameter of the sun gear part body is smaller than the inner diameter of the annular side wall, and a cavity for accommodating the planetary gear is formed between the two;

[0016] The planetary gear part includes a fixed section, a gear shaft and a first fastening section which are connected in sequence, and the planetary gear is sleeved on the gear shaft; the planetary gear is arranged between the annular inner teeth and the annular outer teeth and meshes with the annular inner teeth and the annular outer teeth respectively; the annular inner teeth are arranged outside the annular outer teeth; the first fastening section is used to fix one end of the workpiece to be sprayed, and the fixed section is used to fix the planetary gear on the gear shaft;

[0017] The support plate comprises a support plate body, a mounting hole is arranged at the center of the support plate body, and the mounting hole matches with the positioning platform of the sun gear part, so that the support plate is mounted on the positioning platform of the sun gear part; a plurality of positioning through holes are arranged along the circumferential direction at the edge of the support plate body;

[0018] The auxiliary support portion comprises a connected positioning connection section and a second fastening section, wherein the positioning connection section is configured to be installed in the positioning through hole of the support plate, and the second fastening section is used to fix the other end of the workpiece to be sprayed.

[0019] According to the rotary spraying device of the present invention, preferably, the sun gear part also includes a shaft tail, a threaded section and a positioning nut; the threaded section is connected to an end of the positioning platform away from the shaft body section, and the shaft tail is connected to an end of the threaded section away from the positioning platform; the threaded section is provided with an external thread, the positioning nut matches the threaded section, and the support plate is configured to be mounted on the positioning platform through the positioning nut.

[0020] According to the rotary spraying device of the present invention, preferably, the planetary gears are provided in at least three numbers, and the planetary gears are evenly distributed between the annular inner teeth and the annular outer teeth; the planetary gears have an axial through hole inside, and the side wall of the axial through hole is provided with a positioning groove portion along its axial direction;

[0021] The supporting plate is provided with at least three positioning through holes, and the positioning through holes are provided corresponding to the axial through holes.

[0022] According to the rotary spraying device of the present invention, preferably, the fixed section includes a fixed shaft and a fixed nut, the fixed shaft is connected to the gear shaft, at least a portion of the surface of the fixed shaft is provided with an external thread, and the fixing nut matches the external thread; a positioning protrusion is provided on the gear shaft, and the positioning protrusion matches the positioning groove of the planetary gear.

[0023] According to the rotary spraying device of the present invention, preferably, the first fastening section comprises a first fastening platform, a first axial opening groove and a first fastening screw, one end of the first fastening platform is connected to the gear shaft, and the other end of the first fastening platform extends in the opposite direction of the gear shaft to form a first fastening platform extension portion and a second fastening platform extension portion; the first fastening platform extension portion and the second fastening platform extension portion are arranged in parallel;

[0024] A first axial opening groove is formed between the first fastening platform extension and the second fastening platform extension for inserting one end of the workpiece to be sprayed; at least one threaded through hole A is provided on the first fastening platform extension and / or the second fastening platform extension;

[0025] The first fastening screw matches the threaded through hole A, and is used to fix one end of the workpiece to be sprayed in the first axial opening groove.

[0026] According to the rotary spraying device of the present invention, preferably, the second fastening section of the auxiliary support portion comprises a second fastening platform, a second axial opening slot and a second fastening screw;

[0027] One end of the second fastening platform is connected to the positioning connection section, and the other end of the second fastening platform is provided with a first extension portion and a second extension portion parallel to each other;

[0028] A second axial opening groove is formed between the first extension portion and the second extension portion; the second axial opening groove is used for inserting the other end of the workpiece to be sprayed; at least one threaded through hole B is provided on the first extension portion and / or the second extension portion;

[0029] The second fastening screw is configured to match the threaded through hole B, and the second fastening screw is used to fix the other end of the workpiece to be sprayed in the second axial opening groove by rotating.

[0030] According to the rotary spraying device of the present invention, preferably, the positioning connecting section includes a fixing portion, a connecting shaft and a locking nut, the connecting shaft is connected to the second fastening platform, and the connecting shaft is configured to be inserted into the positioning through hole of the support plate; the fixing portion is connected to an end of the connecting shaft away from the second fastening platform; at least a portion of the surface of the fixing portion is provided with an external thread, and the locking nut matches the fixing portion, so that the connecting shaft is installed in the positioning through hole through the locking nut.

[0031] According to the rotary spraying device of the present invention, preferably, the first fastening platform forms a positioning shoulder on a side close to the gear shaft;

[0032] The planetary gear has a front end face and a rear end face; the front end face is configured to fit with the positioning shoulder, and the rear end face is configured to fit with the end face of the fixing nut.

[0033] According to the rotary spraying device of the present invention, preferably, there is a distance between the top of the shaft head and the bottom of the positioning hole.

[0034] According to the rotary spraying device of the present invention, preferably, the inner diameter of the mounting hole is larger than the outer diameter of the positioning platform.

[0035] The rotary spraying device of the present invention can improve the spraying efficiency. On the one hand, the present invention can fix multiple flat workpieces. On the other hand, during the spraying process, the annular inner teeth, planetary gears, and annular outer teeth are in a constant meshing state, driving the workpiece to be sprayed to rotate along the planetary gear part while revolving around the sun gear part, thereby achieving one-time spraying of multiple sides of the workpiece, ensuring continuous operation of the spraying process, and improving the spraying efficiency. In addition, during the spraying process, by adjusting and matching the number of teeth of the annular inner teeth, planetary gears, and annular outer teeth, the rotation and revolution speeds of the workpiece can be changed, and the sprayed particles on the surface of the workpiece can be fully covered and accumulated, thereby improving the uniformity of the coating thickness. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a front view schematic diagram of a rotary spraying device of the present invention.

[0037] Figure 2 It is a cross-sectional schematic diagram of a rotary spraying device of the present invention.

[0038] Figure 3 The figure is a cross-sectional schematic diagram of a driving gear portion of the present invention.

[0039] Figure 4 It is a schematic diagram of a sun gear portion of the present invention.

[0040] Figure 5 It is a schematic diagram of a planetary gear of the present invention.

[0041] Figure 6 It is a schematic diagram of a planetary gear unit of the present invention.

[0042] Figure 7 It is a cross-sectional schematic diagram of a rotary spraying device of the present invention (i.e., a schematic diagram of the meshing of annular internal teeth, planetary gears, and annular external teeth).

[0043] Figure 8 It is a schematic diagram of an auxiliary support portion of the present invention.

[0044] Fig. 9 This is a schematic diagram of a support plate of the present invention.

[0045] The following are the descriptions of the reference numerals:

[0046] 300-driving gear part, 310-motor shaft part, 320-connecting part, 321-positioning hole, 330-annular inner gear ring part, 331-annular inner gear ring part body, 332-annular side wall, 3321-annular inner teeth, 400-sun gear part, 410-shaft tail, 420-threaded section, 430-positioning platform, 440-shaft body, 450-sun gear part body, 4501-annular outer teeth, 460-shaft head, 470-positioning nut, 500-planetary gear, 511-axial through hole, 512-positioning groove part, 513-front end face, 600-support plate, 610-support plate body, 611-mounting hole, 612-positioning through hole, 200-planetary Gear part, 210-fixing section, 211-fixing shaft, 212-fixing nut, 220-gear shaft, 230-first fastening section, 231-first fastening platform, 2311-first fastening platform extension, 2312-second fastening platform extension, 2313-positioning shoulder, 232-first axial opening groove, 233-first fastening screw, 100-auxiliary support part, 110-positioning connecting section, 111-fixing part, 112-connecting shaft, 113-locking nut, 120-second fastening section, 121-second fastening platform, 1211-first extension, 1212-second extension, 122-second axial opening groove, 123-second fastening screw, 10-workpiece to be sprayed. DETAILED DESCRIPTION

[0047] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

[0048] In the present invention, the rotary spraying device is a rotary spraying device for plasma spraying. The workpiece to be sprayed is preferably a flat workpiece.

[0049] The rotary spraying device of the present invention comprises a driving gear part, a sun gear part, a planetary gear part, a support plate and an auxiliary support part, which are described in detail below.

[0050] Driving gear part

[0051] The driving gear part of the present invention comprises a motor shaft part, a connecting part and an annular inner gear ring part which are connected in sequence.

[0052] One end of the motor shaft away from the connecting part is connected to the motor. The motor is preferably a plasma sprayed rotating motor. This is conducive to realizing the rotation of the active gear part through the motor.

[0053] According to one embodiment of the present invention, the outer diameter of the motor shaft is smaller than the outer diameter of the connecting portion. The outer contour of the motor shaft is not particularly limited, for example, it can be a prism, preferably a hexagonal prism.

[0054] The annular inner gear ring part comprises an annular inner gear ring part body and an annular side wall. The annular inner gear ring part body is connected to an end of the connecting part away from the motor shaft. A through hole is arranged at the center of the annular inner gear ring part body. The inner surface of the annular side wall forms an annular inner tooth. The annular inner gear ring part body can be disc-shaped.

[0055] In the present invention, the annular side wall is vertically arranged on the annular inner gear ring body. For example, the annular side wall is vertically arranged on the outer edge of the annular inner gear ring body. The annular side wall and the annular inner gear ring body can be integrally formed or welded together.

[0056] In the present invention, the outer diameter of the annular sidewall is equal to or greater than the outer diameter of the annular inner gear ring body. In some embodiments, the outer diameter of the annular sidewall is equal to the outer diameter of the annular inner gear ring body. In other embodiments, the outer diameter of the annular sidewall is slightly greater than the outer diameter of the annular inner gear ring body.

[0057] In the present invention, the connection part is provided with a positioning hole along the axial direction. The positioning hole is connected to the through hole of the annular inner gear ring part body, and the positioning hole is used to axially position the sun gear part. The outer contour of the connection part is not particularly limited, for example, it can be cylindrical. The connection part and the motor shaft part can be integrally formed or welded together.

[0058] According to one embodiment of the present invention, the outer diameter of the connecting portion is smaller than the inner diameter of the annular side wall; the diameter of the through hole of the annular inner gear ring body is greater than or equal to the diameter of the positioning hole, which facilitates the positioning of the sun gear portion.

[0059] Sun gear unit

[0060] The sun gear part of the present invention comprises a shaft head, a sun gear part body, a shaft body section, a positioning platform and a threaded section which are connected in sequence. Optionally, it also comprises a shaft tail section and a positioning nut.

[0061] The shaft head of the sun gear part can be inserted into the positioning hole of the driving gear part, so that the sun gear part is axially positioned. According to one embodiment of the present invention, a certain distance is maintained between the top of the shaft head and the bottom of the positioning hole. This can reduce rotational friction or collision.

[0062] The outer surface of the sun gear body forms an annular outer tooth, which is conducive to forming a structure in which the annular outer tooth, the planetary gear and the annular inner tooth are meshed.

[0063] The outer diameter of the shaft head is smaller than the outer diameter of the sun gear body. The outer diameter of the sun gear body is larger than the outer diameter of the shaft body.

[0064] The outer diameter of the positioning platform is smaller than the outer diameter of the shaft body section. The positioning platform is used to axially position the support disc. The support disc is sleeved on the positioning platform.

[0065] The area around the shaft section between the sun gear body and the support disk forms a space for accommodating the workpiece to be sprayed. In some embodiments, the length of the shaft section is greater than the length of the workpiece to be sprayed.

[0066] The thread segment is provided with an external thread, and the outer diameter of the thread segment is less than or equal to the outer diameter of the positioning platform.

[0067] The positioning nut matches the threaded section, and the positioning nut is used to position the support disc body on the positioning platform of the sun gear part.

[0068] The diameter of the shaft tail is smaller than the outer diameter of the threaded section. The shaft tail is used to connect with the inner ring of the bearing on the support stand to ensure that the sun gear part will not fall off during the rotation spraying process of the workpiece to be sprayed.

[0069] According to a preferred embodiment of the present invention, the shaft center lines of the shaft tail, the threaded section, the positioning platform, the shaft body section, the sun gear body and the shaft head coincide with each other, so that quick assembly and smooth rotation are possible.

[0070] In some embodiments, the sun gear portion (excluding the retaining nut) can be an integrally formed structure. The shaft center lines of the sun gear portion and the driving gear portion coincide with each other.

[0071] In the present invention, the outer contour of the shaft head portion may be cylindrical, and the sun gear portion body may be disc-shaped.

[0072] The outer diameter of the sun gear body is smaller than the inner diameter of the annular side wall of the driving gear, and a cavity for accommodating the planetary gear is formed between the two.

[0073] Planetary gear unit

[0074] The planetary gear unit of the present invention comprises a fixed section, a gear shaft, a first fastening section and a planetary gear. The fixed section, the gear shaft and the first fastening section are connected in sequence. The planetary gear is sleeved on the gear shaft.

[0075] The planetary gear of the present invention is arranged between the annular inner teeth of the driving gear part and the annular outer teeth of the sun gear part. The annular inner teeth are arranged outside the annular outer teeth. The annular inner teeth are meshed with the planetary gear and the two rotate in the same direction. The annular outer teeth are meshed with the planetary gear and the two rotate in opposite directions. The axial direction of the planetary gear is consistent with the axial direction of the driving gear part. The rotation speed and the revolution speed can be controlled by adjusting the number of teeth of the annular inner teeth, the planetary gear and the annular outer teeth.

[0076] According to one embodiment of the present invention, at least three planetary gears are provided, and the planetary gears are evenly distributed between the annular inner teeth and the annular outer teeth.

[0077] According to a preferred embodiment of the present invention, the number of the planetary gears is 6 to 30, for example, 20.

[0078] The interior of the planetary gear of the present invention has an axial through hole. The side wall of the axial through hole of the planetary gear is provided with a positioning groove portion along its axial direction. According to one embodiment of the present invention, the cross section of the positioning groove portion is close to a trapezoid, that is, an approximate trapezoid. The trapezoid is an inverted trapezoid structure, with the short side close to the center of the axial through hole and the long side away from the center of the axial through hole. The so-called close to a trapezoid means that the connection between the edges is not necessarily a right angle, and can be a smooth transition structure. This facilitates assembly.

[0079] The planetary gear has a front end face and a rear end face, which are arranged opposite to each other.

[0080] The fixing section of the present invention includes a fixing shaft and a fixing nut. An external thread is provided on at least a portion of the surface of the fixing shaft, for example, an external thread is provided on the surface of the fixing shaft close to the gear shaft. The fixing nut matches the external thread. This facilitates fixing the fixing nut. The fixing section is used to fix the planetary gear on the gear shaft.

[0081] In the present invention, the planetary gear sleeve is arranged on the gear shaft. In some embodiments, a positioning protrusion is arranged on the outer surface of the gear shaft along its axial direction. The positioning protrusion and the positioning groove of the planetary gear match in shape, and the two cooperate to position the planetary gear on the gear shaft. In this way, the planetary gear can be prevented from sliding, thereby fixing the planetary gear on the gear shaft.

[0082] In the present invention, the diameter of the fixed shaft is smaller than the diameter of the gear shaft, and the diameter of the fixed nut is larger than the diameter of the gear shaft, which is conducive to axially fixing one end of the planetary gear.

[0083] The first fastening section of the present invention comprises a first fastening platform, a first axial opening slot and a first fastening screw.

[0084] One end of the first fastening platform is connected to the gear shaft. According to one embodiment of the present invention, the end surface area of ​​the end of the first fastening platform connected to the gear shaft is larger than the cross-sectional area of ​​the gear shaft and smaller than the cross-sectional area of ​​the planetary gear. According to a specific embodiment of the present invention, the end surface area B of the end of the first fastening platform connected to the gear shaft is larger than the cross-sectional area B' of the gear shaft, but slightly smaller than the cross-sectional area B" of the planetary gear, which is conducive to axial positioning of the planetary gear.

[0085] According to one embodiment of the present invention, the first fastening platform forms a positioning shoulder on one side close to the gear shaft. The front end face of the planetary gear is arranged to fit with the positioning shoulder, and the rear end face of the planetary gear is arranged to fit with the end face of the fixing nut. After the assembly is completed, the front end face of the planetary gear can fit with the positioning shoulder, and the rear end face of the planetary gear can fit with the end face of the fixing nut.

[0086] The other end of the first fastening section extends in the opposite direction of the gear shaft to form a first fastening platform extension portion and a second fastening platform extension portion. The first fastening platform extension portion and the second fastening platform extension portion are arranged in parallel.

[0087] A first axial opening slot is formed between the first fastening platform extension and the second fastening platform extension for inserting one end of the workpiece to be sprayed. The first axial opening slot has an axial center line. The first fastening platform extension and the second fastening platform extension are respectively parallel to the axial center line.

[0088] The height of the first axial opening groove (the vertical distance between the bottom surface of the first fastening platform extension and the top surface of the second fastening platform extension) is greater than the thickness of the workpiece to be sprayed, so that it is convenient to insert the workpiece to be sprayed into the first axial opening groove.

[0089] In the present invention, at least one threaded through hole A is provided on the first fastening platform extension and / or the second fastening platform extension. In this way, the workpiece to be sprayed can be fixed by rotating the first fastening screw, so that it is suitable for workpieces to be sprayed with different thicknesses. The number of threaded through holes A can be 1 to 8, preferably 1 to 4. The number of threaded through holes A can be determined according to the size of the workpiece to be sprayed.

[0090] In some embodiments, at least one threaded through hole A is provided on the first fastening platform extension. The number of threaded through holes A may be 1 to 3. In other embodiments, at least one threaded through hole A is provided on the second fastening platform extension. The number of threaded through holes A may be 1 to 3. In still other embodiments, at least one threaded through hole A is provided on both the first fastening platform extension and the second fastening platform extension. The number of threaded through holes A may be 2 to 4.

[0091] According to one embodiment of the present invention, the top surface of the first fastening platform extension is coplanar with the top surface of the fastening platform; the vertical distance between the bottom surface of the second fastening platform extension and the axial centerline of the first axial opening groove is smaller than the vertical distance between the bottom surface of the first fastening platform and the axial centerline of the first axial opening groove. The second fastening platform extension is provided with a plurality of threaded through holes A, for example, two threaded through holes A. The thickness of the first fastening platform extension is greater than the thickness of the second fastening platform extension. In this way, after tightening the first fastening screw, the tail of the first fastening screw can be made substantially flush with the bottom surface of the first fastening platform, thereby making the structure more compact without hindering the installation of other components in the rotary spraying device for plasma spraying, and can fix the workpiece to be sprayed.

[0092] According to a specific embodiment of the present invention, a threaded through hole A is provided on the second fastening platform extension. Specifically, a threaded through hole A is provided in the middle of the second fastening platform extension. According to another specific embodiment of the present invention, the second fastening platform extension is provided with a plurality of threaded through holes A in the longitudinal direction, for example, two threaded through holes A. According to yet another specific embodiment of the present invention, the second fastening platform extension is provided with a plurality of threaded through holes A in the transverse direction, for example, two threaded through holes A. According to yet another embodiment of the present invention, the second fastening platform extension is provided with a plurality of threaded through holes A in both the longitudinal direction and the transverse direction, for example, a total of four threaded through holes A are provided, which are evenly distributed in the longitudinal direction and the transverse direction. This is conducive to fixing the workpiece to be sprayed.

[0093] According to another embodiment of the present invention, the vertical distance between the top surface of the first fastening platform extension and the axial centerline of the first axial opening groove is smaller than the vertical distance between the top surface of the first fastening platform and the axial centerline of the first axial opening groove; and the vertical distance between the bottom surface of the second fastening platform extension and the axial centerline of the first axial opening groove is smaller than the vertical distance between the bottom surface of the first fastening platform and the axial centerline of the first axial opening groove; the first fastening platform extension and the second fastening platform extension are each provided with a plurality of threaded through holes A. In this way, after tightening the first fastening screw, the tail of the first fastening screw can be substantially flush with the bottom surface of the first fastening platform, thereby making the structure more compact and facilitating the fixing of the workpiece to be sprayed.

[0094] According to one specific embodiment of the present invention, the first fastening platform extension portion and the second fastening platform extension portion are each provided with a threaded through hole A. According to another specific embodiment of the present invention, the first fastening platform extension portion and the second fastening platform extension portion are each provided with a plurality of threaded through holes A in the longitudinal direction, for example, two threaded through holes A are each provided. According to yet another specific embodiment of the present invention, the first fastening platform extension portion and the second fastening platform extension portion are each provided with a plurality of threaded through holes A in the transverse direction, for example, two threaded through holes A are each provided.

[0095] The first fastening screw of the present invention matches the threaded through hole A, and the first fastening screw is used to fix one end of the workpiece to be sprayed in the first axial opening groove. This can be applied to workpieces to be sprayed of different thicknesses. The number of the first fastening screws and the number of the threaded through holes A can match.

[0096] During operation, the planetary gear rotates to drive the gear shaft to rotate, thereby driving the first fastening section to rotate, and the workpiece to be sprayed fixed to the first fastening section also rotates accordingly.

[0097] Support plate

[0098] The support plate of the present invention comprises a support plate body and optionally further comprises an annularly extending side wall.

[0099] A mounting hole is provided at the center of the support disc body. The mounting hole matches the positioning platform of the sun gear unit. The support disc body is sleeved on the positioning platform. In this way, the support disc can be axially positioned on the positioning platform of the sun gear unit. The inner diameter of the mounting hole is larger than the outer diameter of the positioning platform. The support disc and the positioning platform can rotate relative to each other, but are not relatively fixed. Specifically, the inner diameter of the mounting hole is slightly larger than the outer diameter of the positioning platform.

[0100] The edge of the support plate body is provided with a plurality of positioning through holes along the circumferential direction. Preferably, the edge of the support plate body is evenly provided with a plurality of positioning through holes along the circumferential direction. The positioning through holes are used to install the workpiece to be sprayed. The positioning through holes are provided corresponding to the axial through holes of the planetary gear.

[0101] In the present invention, the number of positioning through holes is at least three, preferably 6 to 30, and more preferably 10 to 30. In this way, multiple workpieces can be sprayed at one time, thereby improving the spraying efficiency.

[0102] In the present invention, the supporting plate body may be in the shape of a circular disc.

[0103] The annular extension side wall is vertically arranged on the support plate body. The inner diameter of the annular extension side wall is greater than or equal to the outer diameter of the support plate body. According to a specific embodiment of the present invention, the inner diameter of the annular extension side wall is equal to the outer diameter of the support plate body. This can make the overall structure more beautiful and practical.

[0104] Auxiliary support part

[0105] The auxiliary support portion includes a connected positioning connection section and a second fastening section. The positioning connection section is configured to be installed in the positioning through hole of the support plate. The second fastening section is used to fix the other end of the workpiece to be sprayed.

[0106] The positioning connection section includes a connected fixing portion and a connecting shaft, and a locking nut matched with the fixing portion. One end of the connecting shaft is connected to the second fastening section. One end of the connecting shaft away from the second fastening section is connected to the fixing portion. The connecting shaft is configured to be inserted into the positioning through hole of the support plate and to be able to rotate in the positioning through hole. The inner diameter of the positioning through hole is slightly larger than the outer diameter of the connecting shaft.

[0107] In some embodiments, the diameter of the fixing portion is smaller than the diameter of the connecting shaft, which facilitates installation.

[0108] In some embodiments, the connecting shaft is provided with external threads. In other embodiments, the connecting shaft is not provided with external threads.

[0109] In some embodiments, at least a portion of the surface of the fixing portion is provided with an external thread. For example, the surface of the portion of the fixing portion close to the connecting shaft is provided with an external thread. The external thread matches the locking nut, so that the connecting shaft is axially positioned in the positioning through hole through the locking nut to prevent the auxiliary support portion from slipping off.

[0110] The second fastening section includes a second fastening platform, a second axial opening slot and a second fastening screw, which is conducive to clamping and fixing the other end of the workpiece to be sprayed.

[0111] The second fastening section and the first fastening section are arranged substantially symmetrically, thereby facilitating fixing the two ends of the workpiece to be sprayed.

[0112] In the present invention, one end of the second fastening platform is connected to the connecting shaft of the positioning connecting section. According to one embodiment of the present invention, the end surface area of ​​the end of the second fastening platform connected to the positioning connecting section is larger than the end surface area of ​​the end of the positioning connecting section connected to the second fastening platform. In other words, the projection of the end surface of the positioning connecting section connected to the second fastening platform on the second fastening platform falls within the end surface range of the second fastening platform connected to the positioning connecting section.

[0113] The other end of the second fastening platform is provided with a first extension portion and a second extension portion parallel to each other. For example, the other end of the second fastening platform extends in the opposite direction of the positioning connection section to form the first extension portion and the second extension portion. A second axial opening groove is formed between the first extension portion and the second extension portion. The second axial opening groove has an axial centerline. The first extension portion and the second extension portion are respectively parallel to the axial centerline.

[0114] The second axial opening groove is used for inserting the other end of the workpiece to be sprayed. The height of the second axial opening groove is greater than the thickness of the workpiece to be sprayed. This makes it convenient to insert the workpiece to be sprayed into the second axial opening groove. The height of the second axial opening groove is the vertical distance between the bottom surface of the first extension portion and the top surface of the second extension portion.

[0115] In some embodiments, the first extension portion and the second extension portion are both rectangular parallelepiped structures. The second extension portion and the first extension portion are equal in length. This is conducive to clamping and fixing the workpiece to be sprayed, saving raw materials, and reducing the weight of the second fastening section.

[0116] In the present invention, at least one threaded through hole B is provided on the first extension portion and / or the second extension portion. In this way, the workpiece to be sprayed can be fixed by tightening the second fastening screw, so that it is suitable for workpieces to be sprayed with different thicknesses. The number of threaded through holes B can be 1 to 6, depending on the size of the workpiece to be sprayed.

[0117] In some embodiments, at least one threaded through hole B is provided on the first extension portion. The number of threaded through holes B may be 1 to 3. In other embodiments, at least one threaded through hole B is provided on the second extension portion. The number of threaded through holes B may be 1 to 3. In still other embodiments, at least one threaded through hole B is provided on both the first extension portion and the second extension portion. The number of threaded through holes B may be 2 to 6.

[0118] In some embodiments, the top surface of the first extension portion is the top surface of the second fastening platform. The vertical distance between the bottom surface of the second extension portion and the axial centerline of the second axial opening groove is smaller than the vertical distance between the bottom surface of the second fastening platform and the axial centerline of the second axial opening groove. And at least one threaded through hole B is provided on the second extension portion. In this way, after tightening the second fastening screw, the tail of the second fastening screw can be substantially flush with the bottom surface of the second fastening platform, thereby making the structure more compact, without hindering the installation of other components in the rotary spraying device of plasma spraying, and fixing the workpiece to be sprayed.

[0119] In some specific embodiments, the second extension portion is provided with a threaded through hole B. In other specific embodiments, the second extension portion is provided with a plurality of threaded through holes B along the longitudinal direction, for example, two threaded through holes B. In still other specific embodiments, the second extension portion is provided with a plurality of threaded through holes B along the transverse direction, for example, two threaded through holes B. In other specific embodiments, the second extension portion is provided with a plurality of threaded through holes B along the longitudinal direction and along the transverse direction, for example, a total of four threaded through holes B are provided, which are evenly distributed in the longitudinal direction and the transverse direction. This is conducive to the fixation of the workpiece to be sprayed.

[0120] In other embodiments, the vertical distance between the top surface of the first extension and the axial centerline of the second axial opening groove is smaller than the vertical distance between the top surface of the second fastening platform and the axial centerline of the second axial opening groove; and the vertical distance between the bottom surface of the second extension and the axial centerline of the second axial opening groove is smaller than the vertical distance between the bottom surface of the second fastening platform and the axial centerline of the second axial opening groove. At least one threaded through hole B is provided on each of the first extension and the second extension. In this way, after tightening the second fastening screw, the tail of the second fastening screw can be substantially flush with the bottom surface of the second fastening platform, thereby making the structure more compact and conducive to fixing the workpiece to be sprayed.

[0121] In some specific embodiments, the first extension portion and the second extension portion are each provided with a threaded through hole B. In other specific embodiments, the first extension portion and the second extension portion are each provided with a plurality of threaded through holes B along the longitudinal direction, for example, two threaded through holes B. In still other specific embodiments, the first extension portion and the second extension portion are each provided with a plurality of threaded through holes B along the transverse direction, for example, two threaded through holes B are each provided.

[0122] The second fastening screw of the present invention matches the threaded through hole B. The second fastening screw is configured to fix the other end of the workpiece to be sprayed in the second axial opening groove by rotating. This can be applied to workpieces to be sprayed of different thicknesses. The number of the second fastening screws can match the number of the threaded through holes B.

[0123] The present invention can fix multiple flat-plate workpieces to be sprayed on the outside of the sun gear part, and distribute them in a circular ring around the shaft section of the sun gear part. During the spraying process of the present invention, the plasma spraying rotating motor drives the active gear part to rotate, and drives the workpiece to be sprayed and the support plate to rotate around the gear shaft of the planetary gear part through the meshing transmission of the annular internal teeth and the planetary gears; and drives the workpiece to be sprayed to revolve around the sun gear part through the meshing transmission of the planetary gears and the annular external teeth, thereby realizing one-time spraying of multiple surfaces of the flat-plate workpiece, ensuring the continuous operation of the spraying process, and greatly improving the spraying efficiency.

[0124] The installation method of the rotary spraying device of the present invention is as follows:

[0125] Insert the connecting shaft of the auxiliary support part into the positioning through hole of the support plate, so that the support plate fits with the second fastening platform of the auxiliary support part; tighten the locking nut to fix the multiple auxiliary support parts on the support plate along the circumferential direction. Place one end of the workpiece to be sprayed in the second axial opening groove of the auxiliary support part, tighten the second fastening screw to fix one end of the workpiece to be sprayed.

[0126] Insert the other end of the workpiece to be sprayed into the first axial opening groove of the planetary gear part, and tighten the first fastening screw to fix the other end of the workpiece to be sprayed in the first axial opening groove (the auxiliary support part and the planetary gear part can be fixed to the two ends of the workpiece to be sprayed in any order).

[0127] Along the shaft tail of the sun gear part, insert the positioning platform of the sun gear part into the mounting hole of the support plate, so that the end face of the support plate is close to the shaft body section of the sun gear part. Screw the positioning nut into the threaded section of the sun gear part to achieve axial positioning of the sun gear part and the support plate. Make the workpieces to be sprayed in a circular shape and distributed around the outside of the shaft body section of the sun gear part, so as to simultaneously fix multiple flat-type workpieces to be sprayed.

[0128] Install the planetary gear along the fixed shaft of the fixed section so that the front end face of the planetary gear rests on the positioning shaft shoulder, ensure that the planetary gear is meshed with the annular external teeth of the sun gear part, and tighten the fixing nut to achieve axial positioning of the planetary gear.

[0129] Connect one end of the driving gear part to the plasma spraying rotating motor. Insert the assembly support plate, the auxiliary support part, the workpiece to be sprayed and the shaft head of the sun gear part of the planetary gear part into the positioning hole of the driving gear part so that the annular inner teeth of the driving gear part mesh with the planetary gear.

[0130] The shaft tail of the sun gear part of the rotary spraying device of the assembled flat workpiece is connected to the inner ring of the bearing on the supporting stand to ensure that the sun gear part does not fall off during the rotary spraying process of the workpiece to be sprayed.

[0131] Example 1

[0132] Figure 1 It is a front schematic diagram of a rotary spraying device of the present invention. Figure 2 It is a cross-sectional schematic diagram of a rotary spraying device of the present invention. Figure 7 It is a cross-sectional schematic diagram of a rotary spraying device of the present invention (i.e., a schematic diagram of the meshing of annular internal teeth, planetary gears, and annular external teeth).

[0133] like Figure 1 , Figure 2 and Figure 7 As shown, the rotary spraying device includes a driving gear portion 300 , a sun gear portion 400 , a planetary gear portion 200 , a support plate 600 and an auxiliary support portion 100 .

[0134] Figure 3 FIG. 2 is a cross-sectional schematic diagram of a driving gear portion of the present invention (the annular inner teeth are not shown). Figure 2 and Figure 3 As shown, the driving gear portion 300 includes a motor shaft portion 310 , a connecting portion 320 , and an annular inner gear ring portion 330 which are connected in sequence.

[0135] One end of the motor shaft 310 away from the connection part 320 is connected to the plasma spraying rotary motor. The outer diameter of the motor shaft 310 is smaller than the outer diameter of the connection part 320.

[0136] The annular inner gear ring part 330 includes an annular inner gear ring part body 331 and an annular side wall 332. The annular inner gear ring part body 331 is connected to the end of the connecting part 320 away from the motor shaft part 310, and a through hole is provided at the center of the annular inner gear ring part body 331. The annular side wall 332 is vertically arranged on the annular inner gear ring part body 331. The outer diameter of the annular side wall 332 is equal to or slightly larger than the outer diameter of the annular inner gear ring part body 331. Figure 7As shown, an inner surface of the annular side wall 332 forms an annular inner tooth 3321 .

[0137] The connection part 320 is provided with a positioning hole 321 in the axial direction, the positioning hole 321 is connected to the through hole of the annular inner gear ring body 331 , and the positioning hole 321 is used to axially position the sun gear part 400 . The outer diameter of the connection part 320 is smaller than the inner diameter of the annular side wall 332 .

[0138] The shaft center lines of the motor shaft portion 310 , the connecting portion 320 and the annular inner gear ring portion 330 coincide with each other.

[0139] Fig. 9 FIG. 1 is a schematic diagram of a support plate of the present invention. Fig. 9 As shown, the support plate 600 includes a support plate body 610. A mounting hole 611 is provided at the center of the support plate body 610. A plurality of positioning through holes 612, for example, 20 positioning through holes 612, are evenly provided along the circumferential direction at the edge of the support plate body 610. The positioning through holes 612 are used to mount the workpiece to be sprayed.

[0140] like Figure 1 As shown, the outer diameter of the support plate 600 is equal to the outer diameter of the annular side wall of the driving gear portion 300 .

[0141] Figure 4 FIG. 1 is a schematic diagram of a sun gear unit of the present invention. Figure 4 As shown, the sun gear unit 400 includes a shaft tail 410, a threaded section 420, a positioning platform 430, a shaft body section 440, a sun gear unit body 450 and a shaft head 460, and a positioning nut 470 matching the threaded section 420 (see Figure 2 ).

[0142] like Figure 2 As shown, the shaft head 460 can be inserted into the positioning hole 321 of the driving gear part 300, so as to axially position the sun gear part 400. There is a distance between the top of the shaft head 460 and the bottom of the positioning hole 321, so as to reduce the rotational friction. The outer diameter of the shaft head 460 is smaller than the outer diameter of the sun gear part body 450.

[0143] like Figure 7 As shown, the outer surface of the sun gear body 450 forms an annular outer tooth 4501. The outer diameter of the sun gear body 450 is smaller than the inner diameter of the annular side wall 332, and a cavity for accommodating the planetary gear 500 can be formed between the two. The annular inner tooth 3321 is arranged outside the annular outer tooth 4501. The planetary gear 500 is arranged between the annular inner tooth 3321 and the annular outer tooth 4501. The annular inner tooth 3321 meshes with the planetary gear 500, and the two rotate in the same direction. The annular outer tooth 4501 meshes with the planetary gear 500, and the two rotate in opposite directions.

[0144] like Figure 4 , Figure 1 and Figure 2 As shown, an external thread is provided on the threaded section 420 of the sun gear part 400. The outer diameter of the threaded section 420 is smaller than the outer diameter of the positioning platform 430. The outer diameter of the positioning platform 430 is smaller than the outer diameter of the shaft section 440. The positioning platform 430 matches the mounting hole 611 of the support plate body 610. The support plate body 610 is sleeved on the positioning platform 430. The inner diameter of the mounting hole 611 is slightly larger than the outer diameter of the positioning platform 430. The positioning nut 470 matches the threaded section 420, and the positioning nut 470 is used to mount the support plate 600 on the positioning platform 430 of the sun gear part 400. The outer diameter of the positioning nut 470 is larger than the outer diameter of the positioning platform 430. The outer diameter of the sun gear part body 450 is larger than the outer diameter of the shaft section 440. The area around the shaft section 440 between the sun gear part body 450 and the support plate 600 forms a space for accommodating the workpiece 10 to be sprayed.

[0145] like Figure 2 and Figure 4 As shown, the diameter of the shaft tail 410 is smaller than the outer diameter of the threaded section 420. The shaft tail 410 is connected to the inner ring of the bearing on the support stand to ensure that the shaft head 460 of the sun gear part 400 does not fall off during the rotation spraying process of the workpiece 10 to be sprayed.

[0146] The shaft center lines of the shaft tail portion 410 , the threaded section 420 , the positioning platform 430 , the shaft body section 440 , the sun gear unit body 450 , the shaft head portion 460 and the driving gear unit 300 coincide with each other.

[0147] Figure 6 Schematic diagram of a planetary gear unit of the present invention. Figure 6 As shown, the planetary gear unit 200 includes a fixed section 210, a gear shaft 220 and a first fastening section 230 connected in sequence; the planetary gear 500 is sleeved on the gear shaft 220. The fixed section 210 is used to fix the planetary gear 500 on the gear shaft 220. The first fastening section 230 is used to fix one end of the workpiece 10 to be sprayed.

[0148] Figure 5 It is a schematic diagram of a planetary gear of the present invention. Figure 7 FIG. 1 is a cross-sectional schematic diagram of a rotary spraying device of the present invention (i.e., a schematic diagram of the meshing of the annular inner gear, the planetary gear, and the annular outer gear). Figure 5 and Figure 7As shown, at least three planetary gears 500 are provided, for example, 20. These planetary gears 500 are evenly distributed between the annular inner teeth 3321 and the annular outer teeth 4501. The interior of the planetary gear 500 has an axial through hole 511. The side wall of the axial through hole 511 is provided with a positioning groove portion 512 along its axial direction. The cross section of the positioning groove portion 512 is close to a trapezoid. The planetary gear 500 has a front end face 513 and a rear end face that are arranged oppositely.

[0149] The fixing section 210 includes a fixing shaft 211 and a fixing nut 212. An external thread is provided on at least a portion of the surface of the fixing shaft 211, for example, an external thread is provided on the surface of the fixing shaft 211 close to the gear shaft 220. The fixing nut 212 matches the external thread.

[0150] A positioning protrusion (not shown) is provided on the outer surface of the gear shaft 220 along its axial direction, and the positioning protrusion cooperates with the positioning groove 512 of the planetary gear 500 to position the planetary gear 500 on the gear shaft 220 to prevent it from sliding. The shapes of the positioning protrusion and the positioning groove 512 match. The cross section of the positioning groove 512 can be approximately trapezoidal.

[0151] The first fastening section 230 includes a first fastening platform 231, a first axial opening groove 232 and a first fastening screw 233. One end of the first fastening section 230 is connected to the gear shaft 220. The end surface area B of the end of the first fastening section 230 connected to the gear shaft 220 is larger than the cross-sectional area B' of the gear shaft 220, but slightly smaller than the cross-sectional area B" of the planetary gear 500. The other end of the first fastening section 230 extends in the opposite direction of the gear shaft 220 to form a first fastening platform extension portion 2311 and a second fastening platform extension portion 2312. The first fastening platform extension portion 2311 and the second fastening platform extension portion 2312 are arranged in parallel. The thickness of the first fastening platform extension portion 2311 is greater than the thickness of the second fastening platform extension portion 2312.

[0152] A first axial opening groove 232 is formed between the first fastening platform extension 2311 and the second fastening platform extension 2312 for inserting one end of the workpiece 10 to be sprayed. The height of the first axial opening groove 232 (the vertical distance between the bottom surface of the first fastening platform extension 2311 and the top surface of the second fastening platform extension 2312) is greater than the thickness of the workpiece 10 to be sprayed, so as to facilitate the insertion of one end of the workpiece 10 to be sprayed. The first axial opening groove 232 has an axial centerline.

[0153] The top surface of the first fastening platform extension 2311 is coplanar with the top surface of the first fastening platform 231. The vertical distance between the bottom surface of the second fastening platform extension 2312 and the axial centerline of the first axial opening slot 232 is smaller than the vertical distance between the bottom surface of the first fastening platform 231 and the axial centerline of the first axial opening slot 232.

[0154] A threaded through hole A is provided in the middle of the second fastening platform extension 2312 . The first fastening screw 233 matches the threaded through hole A. The first fastening screw 233 is rotated to fix the workpiece 10 to be sprayed between the first fastening platform extension 2311 and the first fastening screw 233 , thereby fixing it in the first axial opening slot 232 .

[0155] In this embodiment, the diameter of the fixed shaft 211 is slightly smaller than the diameter of the gear shaft 220, but the diameter of the fixing nut 212 is larger than the diameter of the gear shaft 220, so as to facilitate the fixing of the planetary gear 500. The first fastening platform 231 forms a positioning shoulder 2313 on the side close to the gear shaft 220. After the assembly is completed, the front end face 513 of the planetary gear 500 can be fitted with the positioning shoulder 2313, and the rear end face of the planetary gear 500 can be fitted with the end face of the fixing nut 212.

[0156] During operation, the planetary gear 500 rotates to drive the gear shaft 220 to rotate, thereby driving the first fastening section 230 to rotate, and the workpiece 10 to be sprayed fixed to the first fastening section 230 also rotates accordingly.

[0157] Figure 8 Schematic diagram of an auxiliary support portion of the present invention. Figure 8 As shown, the auxiliary support portion 100 includes a connected positioning connection section 110 and a second fastening section 120. The positioning connection section 110 can be installed in the positioning through hole 612 of the support plate 600. The second fastening section 120 is used to fix the other end of the workpiece 10 to be sprayed.

[0158] The positioning connection section 110 includes a connected fixing portion 111 and a connecting shaft 112, and a locking nut 113 matching the fixing portion 111. The diameter of the fixing portion 111 is smaller than the diameter of the connecting shaft 112. One end of the connecting shaft 112 away from the fixing portion 111 is connected to the second fastening section 120. No external thread is provided on the connecting shaft 112. The connecting shaft 112 can be inserted into the positioning through hole 612 of the support disk 600. The connecting shaft 112 can rotate in the positioning through hole 612. At least a portion of the surface of the fixing portion 111 is provided with an external thread, for example, the surface of the fixing portion 111 close to the connecting shaft 112 is provided with an external thread. The external thread matches the locking nut 113, so that the connecting shaft 112 of the auxiliary support portion 100 is axially positioned in the positioning through hole 612 of the support disk 600.

[0159] The second fastening section 120 includes a second fastening platform 121, a second axial opening slot 122 and a second fastening screw 123. The second fastening section 120 and the first fastening section 230 are substantially symmetrically arranged.

[0160] One end of the second fastening platform 121 is connected to the connecting shaft 112 of the positioning connecting section 110. The end surface area A of the end of the second fastening platform 121 connected to the positioning connecting section 110 is larger than the end surface area A' of the end of the positioning connecting section 110 connected to the second fastening platform 121. The other end of the second fastening platform 121 extends in the opposite direction of the positioning connecting section 110 to form a first extension portion 1211 and a second extension portion 1212.

[0161] The first extension portion 1211 and the second extension portion 1212 are arranged in parallel. A second axial opening groove 122 is formed between the first extension portion 1211 and the second extension portion 1212 for inserting the other end of the workpiece 10 to be sprayed. The second axial opening groove 122 has an axial centerline.

[0162] The height of the second axial opening slot 122 is greater than the thickness of the workpiece 10 to be sprayed, so as to facilitate the insertion of the other end of the workpiece 10 to be sprayed. The height of the second axial opening slot 122 is the vertical distance between the bottom surface of the first extension portion 1211 and the top surface of the second extension portion 1212.

[0163] The top surface of the first extension portion 1211 is coplanar with the top surface of the second fastening platform 121. The vertical distance between the bottom surface of the second extension portion 1212 and the axial centerline of the second axial opening slot 122 is smaller than the vertical distance between the bottom surface of the second fastening platform 121 and the axial centerline of the second axial opening slot 122. The thickness of the first extension portion 1211 is greater than the thickness of the second extension portion 1212.

[0164] The second extension portion 1212 is provided with a threaded through hole B. Specifically, the threaded through hole B is provided near the middle of the second extension portion 1212 .

[0165] The second fastening screw 123 matches the threaded through hole B on the second extension portion 1212 . By rotating the second fastening screw 123 , the other end of the workpiece 10 to be sprayed is fixed between the first extension portion 1211 and the second fastening screw 123 , thereby being fixed in the second axial opening slot 122 .

[0166] Example 2

[0167] Except for the following differences, the rest is the same as Example 1:

[0168] The second fastening platform extension 2312 is provided with a plurality of threaded through holes A along its longitudinal direction, for example, two threaded through holes A. Accordingly, the rotary spraying device includes a plurality of first fastening screws 233, for example, two first fastening screws 233. The first fastening screws 233 match the threaded through holes A on the second fastening platform extension 2312. By rotating the first fastening screws 233, one end of the workpiece 10 to be sprayed is fixed in the first axial opening groove 232;

[0169] The second extension portion 1212 is provided with a plurality of threaded through holes B along its longitudinal direction, for example, two threaded through holes B. Accordingly, the rotary spraying device includes a plurality of second fastening screws 123, for example, two second fastening screws 123. The second fastening screws 123 match the threaded through holes B on the second extension portion 1212. By rotating the second fastening screws 123, the other end of the workpiece 10 to be sprayed is fixed in the second axial opening groove 122.

[0170] Example 3

[0171] Except for the following differences, the rest is the same as Example 1:

[0172] The second fastening platform extension 2312 is provided with a plurality of threaded through holes A along its transverse direction, for example, two threaded through holes A. Accordingly, the rotary spraying device includes a plurality of first fastening screws 233, for example, two first fastening screws 233. The first fastening screws 233 match the threaded through holes A on the second fastening platform extension 2312. By rotating the first fastening screws 233, one end of the workpiece 10 to be sprayed is fixed in the first axial opening groove 232;

[0173] The second extension portion 1212 is provided with a plurality of threaded through holes B along its transverse direction, for example, two threaded through holes B. Accordingly, the rotary spraying device includes a plurality of second fastening screws 123, for example, two second fastening screws 123. The second fastening screws 123 match the threaded through holes B on the second extension portion 1212. By rotating the second fastening screws 123, the other end of the workpiece 10 to be sprayed is fixed in the second axial opening groove 122.

[0174] Example 4

[0175] Except for the following structure, the rest is the same as Example 1:

[0176] The support plate 600 further includes an annular extending side wall, which is vertically disposed on the support plate body 610 and has an inner diameter equal to an outer diameter of the support plate body 610.

[0177] The present invention is not limited to the above-mentioned embodiments. Without departing from the essential content of the present invention, any deformation, improvement and substitution that can be thought of by those skilled in the art shall fall within the scope of the present invention.

Claims

1. A rotary spraying device, characterized in that: The rotary spraying device comprises a driving gear portion, a sun gear portion, a planetary gear portion, a support plate and an auxiliary support portion; The driving gear part includes a motor shaft part, a connecting part and an annular inner gear ring part which are connected in sequence; wherein, One end of the motor shaft away from the connecting part is connected to the motor; the outer diameter of the motor shaft is smaller than the outer diameter of the connecting part; The annular inner gear ring portion comprises an annular inner gear ring portion body and an annular side wall, the annular inner gear ring portion body is connected to an end of the connecting portion away from the motor shaft portion, a through hole is arranged at the center of the annular inner gear ring portion body; the annular side wall is vertically arranged on the annular inner gear ring portion body; the inner surface of the annular side wall forms an annular inner tooth; The connecting portion is provided with a positioning hole along the axial direction, which is used to axially position the sun gear portion; the positioning hole is connected to the through hole of the annular inner gear ring portion body; The sun gear part comprises a shaft head, a sun gear part body, a shaft body section and a positioning platform which are connected in sequence; the outer diameter of the positioning platform is smaller than the outer diameter of the shaft body section, and the outer diameter of the shaft body section is smaller than the outer diameter of the sun gear part body; the shaft head is configured to be inserted into the positioning hole; the outer surface of the sun gear part body forms an annular outer tooth; the outer diameter of the sun gear part body is smaller than the inner diameter of the annular side wall, and a cavity for accommodating the planetary gear is formed between the two; The planetary gear part includes a fixing section, a gear shaft and a first fastening section connected in sequence, and also includes a planetary gear, the interior of the planetary gear has an axial through hole; and the planetary gear is sleeved on the gear shaft; the planetary gear is arranged between the annular inner teeth and the annular outer teeth and meshes with the annular inner teeth and the annular outer teeth respectively; the annular inner teeth are arranged outside the annular outer teeth; the first fastening section is used to fix one end of the workpiece to be sprayed, and the fixing section is used to fix the planetary gear on the gear shaft; The support plate comprises a support plate body, a mounting hole is arranged at the center of the support plate body, and the mounting hole matches the positioning platform of the sun gear part, so that the support plate is mounted on the positioning platform of the sun gear part; a plurality of positioning through holes are arranged along the circumferential direction on the edge of the support plate body; a space for accommodating the workpiece to be sprayed is formed in the area around the shaft section between the sun gear part body and the support plate; the positioning through hole is arranged corresponding to the axial through hole; The auxiliary support portion comprises a connected positioning connection section and a second fastening section, wherein the positioning connection section is configured to be installed in the positioning through hole of the support plate, and the second fastening section is used to fix the other end of the workpiece to be sprayed.

2. The rotary spraying device according to claim 1, characterized in that: The sun gear part also includes a shaft tail, a threaded section and a positioning nut; the threaded section is connected to an end of the positioning platform away from the shaft body section, and the shaft tail is connected to an end of the threaded section away from the positioning platform; the threaded section is provided with an external thread, the positioning nut matches the threaded section, and the support plate is configured to be mounted on the positioning platform through the positioning nut.

3. The rotary spraying device according to claim 2, characterized in that: The number of the planetary gears is at least three, and the planetary gears are evenly distributed between the annular inner teeth and the annular outer teeth; the side wall of the axial through hole of the planetary gear is provided with a positioning groove portion along its axial direction; The supporting plate is provided with at least three positioning through holes.

4. The rotary spraying device according to claim 3, characterized in that: The fixed section includes a fixed shaft and a fixed nut, the fixed shaft is connected to the gear shaft, at least a portion of the surface of the fixed shaft is provided with an external thread, and the fixing nut matches the external thread; a positioning protrusion is provided on the gear shaft, and the positioning protrusion matches the positioning groove of the planetary gear.

5. The rotary spraying device according to claim 4, characterized in that: The first fastening section includes a first fastening platform, a first axial opening groove and a first fastening screw, one end of the first fastening platform is connected to the gear shaft, and the other end of the first fastening platform extends in the opposite direction of the gear shaft to form a first fastening platform extension portion and a second fastening platform extension portion; the first fastening platform extension portion and the second fastening platform extension portion are arranged in parallel; A first axial opening groove is formed between the first fastening platform extension and the second fastening platform extension for inserting one end of the workpiece to be sprayed; at least one threaded through hole A is provided on the first fastening platform extension and / or the second fastening platform extension; The first fastening screw matches the threaded through hole A, and is used to fix one end of the workpiece to be sprayed in the first axial opening groove.

6. The rotary spraying device according to claim 5, characterized in that: The second fastening section includes a second fastening platform, a second axial opening slot and a second fastening screw; One end of the second fastening platform is connected to the positioning connection section, and the other end of the second fastening platform is provided with a first extension portion and a second extension portion parallel to each other; A second axial opening groove is formed between the first extension portion and the second extension portion; the second axial opening groove is used for inserting the other end of the workpiece to be sprayed; at least one threaded through hole B is provided on the first extension portion and / or the second extension portion; The second fastening screw is configured to match the threaded through hole B, and the second fastening screw is used to fix the other end of the workpiece to be sprayed in the second axial opening groove by rotating.

7. The rotary spraying device according to claim 6, characterized in that: The positioning connection section includes a fixing portion, a connecting shaft and a locking nut, wherein the connecting shaft is connected to the second fastening platform, and the connecting shaft is configured to be inserted into the positioning through hole of the support plate; the fixing portion is connected to an end of the connecting shaft away from the second fastening platform; an external thread is provided on at least a portion of the surface of the fixing portion, and the locking nut matches the fixing portion, so that the connecting shaft is installed in the positioning through hole through the locking nut.

8. The rotary spraying device according to claim 6, characterized in that: The first fastening platform forms a positioning shoulder on a side close to the gear shaft; The planetary gear has a front end face and a rear end face; the front end face is configured to fit with the positioning shoulder, and the rear end face is configured to fit with the end face of the fixing nut.

9. The rotary spraying device according to any one of claims 1 to 8, characterized in that: There is a distance between the top of the shaft head and the bottom of the positioning hole.

10. The rotary spraying device according to claim 9, characterized in that: The inner diameter of the mounting hole is greater than the outer diameter of the positioning platform.

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