CN117447645B - Acrylic resin and automobile hub and molding equipment with same - Google Patents

Abstract

The application discloses an acrylic resin, which comprises, by weight, 25-55 parts of styrene, 10-20 parts of butyl acrylate, 10-15 parts of isooctyl acrylate, 5-12 parts of isobornyl methacrylate, 6-14 parts of methyl methacrylate, 20-50 parts of glycidyl methacrylate, 0.5-1.5 parts of an initiator, 30-55 parts of an organic solvent and 0.2-1 part of a chain transfer agent. Also disclosed is an automobile hub, the exterior of which is coated with the above-described acrylic resin. The forming device comprises a raw material processing device, a spraying device and a baking device, wherein the raw material processing device is used for combining acrylic resin and organic dibasic acid to obtain powder raw material, the spraying device is suitable for coating the powder raw material on an automobile hub, and the baking device is suitable for drying the coated automobile hub. The application has the beneficial effects that: the acrylic resin has the characteristics of strong adhesive force, weather resistance, high gloss and color retention, high hardness, excellent impact property and the like.

Description

Acrylic resin, automobile wheel hub and molding equipment having the same

Technical Field

The present application relates to the technical field of automobile wheel hub coatings, and in particular to an acrylic resin and an automobile wheel hub and molding equipment having the resin.

Background technique

The wheel hub is a cylindrical metal component inside a car tire that is centered on the axle and used to support the tire. In layman's terms, it is the part where the axle is installed in the center of the wheel. It is an important component that connects the brake drum (brake disc), wheel disc and half-axle. It is what people often call "wheel rim" or "steel rim".

During the driving of the car, the wheel hub is easily stained with dirt. If it is not cleaned for a long time, it may be corroded and deformed, resulting in safety hazards. Therefore, in the production process of the wheel hub, it is necessary to coat the outer surface of the wheel hub. The existing method generally adopts spray painting to form a paint film on the outside of the wheel hub for protection. However, the existing paint film has low hardness, poor glossiness, and poor corrosion resistance and heat resistance, which will shorten the service life of the car wheel hub.

Summary of the invention

One of the objectives of the present application is to provide an acrylic resin.

Another object of the present application is to provide a vehicle wheel hub having acrylic resin.

Another object of the present application is to provide a molding device for applying and spraying acrylic resin on a car wheel hub to form a coating film.

To achieve the above purpose, the technical solution adopted in the present application is: an acrylic resin, wherein the acrylic resin raw materials include, by weight ratio, 25-55 parts of styrene, 10-20 parts of butyl acrylate, 10-15 parts of isooctyl acrylate, 5-12 parts of isobornyl methacrylate, 6-14 parts of methyl methacrylate, 20-50 parts of glycidyl methacrylate, 0.5-1.5 parts of initiator, 30-55 parts of organic solvent and 0.2-1 part of chain transfer agent.

A car wheel hub, the exterior of which is coated with the acrylic resin.

A molding device includes a raw material processing device, a spraying device and a baking device. The raw material processing device is used to combine the acrylic resin with an organic dibasic acid to obtain a powder raw material. The spraying device is suitable for coating the powder raw material on the automobile wheel hub. Then, the baking device is suitable for drying the coated automobile wheel hub.

Preferably, the spraying equipment includes a workbench, a driving mechanism, a placing table and a flipping mechanism, the driving mechanism is installed on the workbench, the placing table is rotatably installed on the workbench and connected to the driving mechanism, and the placing table is used to place the automobile wheel hub to be sprayed, and the flipping mechanism is installed on the workbench and connected to the driving mechanism; when spraying the automobile wheel hub, the driving mechanism is suitable for driving the placing table to rotate through a first action; at this time, the flipping mechanism is suitable for remaining stationary; when flipping the automobile wheel hub, the driving mechanism is suitable for driving the flipping mechanism to rotate and flip the automobile wheel hub through a second action; at this time, the placing table remains stationary.

Preferably, the flipping mechanism includes a moving component and two clamping components, the moving component is installed on the placement table and connected to the driving mechanism, the clamping component and the placement table are matched through a guide structure, and the clamping component is matched and connected to the moving component; the moving component is suitable for driving the clamping component to move under the drive of the driving mechanism, and then the clamping component performs a first process, a second process, a third process and a fourth process under the action of the guide structure; wherein the first process: the clamping component is suitable for moving until it abuts against the automobile wheel hub, so that the automobile wheel hub is clamped and fixed; the second process: the clamping component is suitable for driving the automobile wheel hub to move up to a distance set by the placement table; the third process: the clamping component is suitable for rotating and flipping the automobile wheel hub through a matching structure; the fourth process: the clamping component is suitable for moving and resetting, so that the flipped automobile wheel hub is released and placed on the placement table.

Preferably, the clamping assembly includes a clamping plate, an elastic telescopic rod and a movable plate, the movable plate is slidably installed in the workbench by a slider, and the two movable plates are respectively located on both sides of the placement table, the movable plate is vertically slidably matched with the slider and matched with the placement table through a guide structure, and the movable plate and the movable mechanism are connected and matched, the two elastic telescopic rods are respectively rotatably installed on the upper ends of the opposite sides of the two movable plates, the clamping plate is installed at the end of the elastic telescopic rod, and the elastic telescopic rod is matched with the movable plate through a clutch structure; when the first process, the second process and the fourth process are performed, the clutch structure is in a limited state, and the elastic telescopic rod remains stationary in the axial circumferential direction; when the third process is performed, the clutch structure is in a separated state, and the elastic telescopic rod rotates in the axial circumferential direction, so that the automobile wheel hub rotates and flips over.

Preferably, guide plates are installed on both sides of the bottom end of the workbench, and the guide structure includes a guide groove arranged on the guide plate and a guide block arranged on the movable plate, and the guide block and the guide groove form a sliding fit; the guide groove includes an upper transverse section, a lower transverse section and an inclined section, the upper transverse section and the lower transverse section are parallel and horizontally arranged, and the upper transverse section and the lower transverse section are connected through the inclined section; when the guide block slides along the lower transverse section to the inclined section, the clamping plate is suitable for moving until it abuts against the automobile wheel hub; when the guide block slides along the inclined section to the upper transverse section, the clamping plate is suitable for driving the automobile wheel hub to move up to a distance set by the placing platform; when the guide block slides along the upper transverse section away from the inclined section, the elastic telescopic rod is suitable for rotating and flipping the automobile wheel hub through the matching structure.

Preferably, the mating structure includes a rotating shaft, a mating rack, a mating gear and an extrusion block, the extrusion block is installed on the outside of the guide plate and close to the upper horizontal section, the mating rack is elastically slidably installed on the lower end of the movable plate, the rotating shaft is rotatably installed on the lower end of the movable plate, the rotating shaft and the elastic telescopic rod are matingly connected through a transmission structure, the mating gear is installed on the rotating shaft through a one-way bearing, and the mating gear and the mating rack are meshed;.

Preferably, when the third process is carried out, the mating rack moves under the wedge-shaped cooperation of the extrusion block to cause the meshing mating gear to rotate. At this time, the one-way bearing is in an engaged state, and then the rotating shaft drives the elastic telescopic rod to rotate through the transmission structure, so that the automobile wheel hub rotates and turns over.

Preferably, the moving assembly includes a rotating rod and two moving blocks, the rotating rod is rotatably installed at the bottom end of the workbench and connected to the driving mechanism, the outer sides of the rotating rod are reciprocating screw rod sections, the two moving blocks respectively cooperate with the two reciprocating screw rod sections, and the moving blocks are sleeved on the outside of the moving plate; when the first process, the second process and the third process are performed, the rotating rod rotates to drive the two moving blocks to move relative to each other; when the fourth process is performed, the rotating rod rotates to drive the two moving blocks to move away from each other; thereby realizing the flipping process of the automobile wheel hub.

Preferably, the driving mechanism includes a motor, a first transmission assembly and a second transmission assembly, the motor is installed at the bottom end of the workbench, and the input ends of the first transmission assembly and the second transmission assembly are connected to the output end of the motor, the output end of the first transmission assembly is connected and cooperated with the placement table, and the output end of the second transmission assembly is connected and cooperated with the rotating rod; when the motor performs a first action by rotating in a first direction, the placement table is suitable for rotating under the drive of the first transmission assembly, and the rotating rod is disengaged from the second transmission assembly; when the motor performs a second action by rotating in a second direction, the rotating rod is suitable for rotating under the drive of the second transmission assembly, and the placement table is disengaged from the first transmission assembly.

Compared with the prior art, the beneficial effects of this application are:

(1) The acrylic resin prepared by the formula provided by the present invention has the characteristics of strong adhesion, high hardness, excellent impact resistance, etc., and also has good physical and mechanical properties, excellent weather resistance, chemical resistance and water resistance, high gloss and color retention, and is particularly suitable for the external coating of automobile wheels.

(2) The present invention is provided with a flipping mechanism and a driving mechanism. When spraying, the driving mechanism can drive the placement table to rotate through a first action, so that the outside of the wheel hub can be sprayed more evenly and comprehensively; when the wheel hub needs to be flipped, the driving mechanism can drive the flipping mechanism to rotate and flip the wheel hub on the placement table through a second action, thereby saving time and labor and improving work efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the overall structure of the present invention.

FIG. 2 is a schematic structural diagram of a spraying workbench according to the present invention.

FIG. 3 is a schematic diagram of the bottom structure of the workbench of the present invention.

FIG. 4 is an enlarged structural schematic diagram of point A of the present invention.

FIG. 5 is an enlarged structural schematic diagram of point B of the present invention.

FIG. 6 is a schematic diagram of the structure of the turning mechanism of the present invention.

FIG. 7 is a schematic diagram of a partial structure of the present invention.

FIG. 8 is a schematic diagram of the structure of the elastic telescopic rod of the present invention.

FIG. 9 is a schematic diagram of the clutch structure of the present invention.

FIG. 10 is a schematic diagram of the guide groove structure of the present invention.

FIG. 11 is a schematic diagram of the working state of the flipping mechanism of the present invention.

FIG. 12 is a schematic diagram of the working state of the flipping mechanism of the present invention.

In the figure: 1, workbench; 2, placing table; 3, turning mechanism; 301, moving assembly; 3011, rotating rod; 30111, reciprocating screw rod segment; 3012, moving block; 302, clamping assembly; 3021, moving plate; 3022, elastic telescopic rod; 30221, fixing cylinder; 30222, elastic member; 30223, inner rod; 3023, clamping plate; 4, dust collector; 5, guide structure; 501, guide groove; 5011, upper horizontal section; 5012, lower horizontal section; 5013 , inclined section; 502, guide block; 6, driving mechanism; 601, motor; 602, first transmission assembly; 6021, worm gear; 6022, worm; 603, second transmission assembly; 6031, first gear; 6032, second gear; 7, guide plate; 8, matching structure; 801, rotating shaft; 802, matching gear; 803, matching rack; 804, extrusion block; 9, transmission structure; 10, slider; 11, clutch structure; 1101, limit block; 1102, limit groove.

Detailed ways

Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

One of the preferred embodiments of the present application provides an acrylic resin, which is prepared from raw materials according to the following weight ratio: the acrylic resin raw materials include 25-55 parts of styrene, 10-20 parts of butyl acrylate, 10-15 parts of isooctyl acrylate, 5-12 parts of isobornyl methacrylate, 6-14 parts of methyl methacrylate, 20-50 parts of glycidyl methacrylate, 0.5-1.5 parts of

Initiator, 30-55 parts of organic solvent and 0.2-1 parts of chain transfer agent.

It should be noted that when a numerical range is disclosed herein, the above range is considered continuous and includes the minimum and maximum values of the range, and every value between such minimum and maximum values.

For example, "10-20 parts" includes but is not limited to: 20 parts, 19 parts, 18 parts, 17 parts, 16 parts, 15 parts, 14 parts, 13 parts, 12 parts, 11 parts and 10 parts, or a range consisting of any two values.

It should be further explained that the initiator includes at least one of azobisisobutyronitrile, azobisisoheptanenitrile, dibenzoyl peroxide, tert-butyl peroxide, diisopropylbenzene peroxide, tert-butyl perbenzoate or tert-amyl peroxide. The organic solvent includes at least one of trimethylbenzene, propylene glycol methyl ether acetate, butyl acetate, n-butanol, ethyl acetate, isobutyl alcohol, isopropyl alcohol and ethylene glycol butyl ether. The chain transfer agent includes at least one of dodecyl mercaptan, n-octyl mercaptan, lauryl mercaptan, mercaptoethanol, mercaptopropanol or mercaptoacetic acid.

The preparation method of acrylic resin comprises the following steps:

(1) Monomer mixing: 25-55 parts of styrene, 10-20 parts of butyl acrylate, 10-15 parts of isooctyl acrylate, 5-12 parts of isobornyl methacrylate, 6-14 parts of methyl methacrylate, and 20-50 parts of glycidyl methacrylate are added into a mixing container and mixed, and 0.5-1.5 parts of an initiator and 0.2-1 parts of a chain transfer agent are added and stirred to obtain a monomer mixture.

(2) Polymerization reaction: 30-55 parts of organic solvent are added into a reaction vessel, the pressure in the reactor is increased to 0.2 MPa (referring to the pressure difference between the inside and outside of the reactor, i.e., the pressure gauge reading), and the temperature is raised to 130-150°C while stirring. The above-mentioned monomer mixture is slowly added dropwise into the reaction vessel while maintaining the temperature for polymerization. After the addition is completed, the reaction is kept warm and refluxed with stirring for 0.5-1.5 hours; then a certain amount of initiator is added, and the reaction is kept warm and refluxed with stirring for a second time for 1.5-2.5 hours.

(3) Post-treatment: The solvent can be removed by atmospheric distillation. When the material temperature rises to 180°C, the solvent can be removed by reduced pressure distillation. The vacuum degree is maintained at 0.08-0.1 MPa, and the material temperature in the kettle is stabilized at 180-200°C until no distillate is produced. The vacuum is released, the material is discharged while hot, and then cooled and filtered to obtain the epoxy acrylic resin.

The prepared epoxy acrylic resin has good adhesion, wear resistance and weather resistance, as well as chemical stability, transparency, flexibility and processability, and is particularly suitable for coatings on automobile wheels.

The present application also provides an automobile wheel hub, the exterior of which is coated with the above-mentioned acrylic resin. The automobile wheel hub anti-corrosion coating prepared with the resin has the characteristics of strong adhesion, high hardness, excellent impact resistance, etc., and the anti-corrosion coating also has good physical and mechanical properties, excellent weather resistance, chemical resistance and water resistance, and high gloss and color retention.

In order to make the coating performance of the automobile wheel hub better, the application method of acrylic resin is: combine acrylic resin with organic dibasic acid, and the organic dibasic acid is preferably lauric acid. Therefore, the present application also provides a molding device, including raw material processing equipment, spraying equipment and baking equipment (not shown), the raw material processing equipment is used to combine acrylic resin with organic dibasic acid to obtain powder raw material, the spray gun D in the spraying equipment can apply the powder raw material to the automobile wheel hub, and finally the baking equipment can dry the coated automobile wheel hub to obtain the coating film on the outside of the automobile wheel hub.

Specifically, as shown in FIG1 , the raw material processing equipment includes a mixing device A, an extrusion device B and a crushing and screening device C. The epoxy acrylic resin and the organic dibasic acid are mixed and stirred by the mixing device A, and then the mixed raw materials are transported to the extrusion device B for extrusion. The extruded raw materials are crushed and screened by the crushing and screening device C to obtain the required powder. Finally, the powder is sprayed on the wheel hub by a spray gun D and baked by a baking device to obtain the required automobile wheel hub coating. The coating can greatly improve the resistance to the automobile wheel hub, making it more wear-resistant and corrosion-resistant. Not only that, the coating can also enhance the gloss and aesthetics of the automobile wheel hub, making it more attractive, and greatly improving the service life of the automobile wheel hub.

It should be noted that the mixing device A, the extrusion device B, the crushing device C, the spraying device and the baking device are all common knowledge to those skilled in the art, so their structures and working principles are not described in detail.

In this embodiment, as shown in Figures 1-12, the spraying equipment includes a workbench 1, a driving mechanism 6, a placing table 2 and a flipping mechanism 3, wherein the driving mechanism 6 is installed at the bottom end of the workbench 1, the placing table 2 can be rotatably installed at the middle position of the top end of the workbench 1 and is connected to the driving mechanism 6. We place the wheel hub to be sprayed on the placing table 2, and the flipping mechanism 3 is installed on the workbench 1 and is also connected to the driving mechanism 6.

Specifically, when we spray the wheel hub on the placement table 2, as shown in FIG1, the staff can hold the spray gun D to spray the wheel hub. During the spraying, the driving mechanism 6 can drive the placement table 2 to rotate through the first action, and the flipping mechanism 3 can remain stationary. In this way, when spraying, the staff can spray the outside of the wheel hub more evenly and comprehensively, that is, there is no need to walk around the wheel hub for spraying, and at the same time, the problems of spray leakage and uneven spraying caused by improper operation are reduced. Moreover, the spraying process is simplified, the labor intensity of the workers is reduced, and the work efficiency is improved.

After the spraying is completed, we need to turn the wheel hub over so that the unsprayed parts of the wheel hub can be sprayed. At this time, the driving mechanism 6 can drive the flipping mechanism 3 to rotate and flip the wheel hub on the placement table 2 through the second action, while the placement table 2 remains stationary. After the flipping is completed, the driving mechanism 6 can drive the placement table 2 to rotate through the first action, and then evenly spray the flipped wheel hub.

It can be seen that the wheel hub can rotate during spraying and can automatically turn over after spraying. This eliminates the need for manual turning, greatly improving work efficiency and spraying quality. The wheel hub's rotation and automatic turning function make the spraying process more uniform and avoid the problem of uneven spraying. At the same time, the lack of manual turning also reduces labor costs and work risks.

In one of the embodiments of the present application, as shown in Figure 3, the flipping mechanism 3 includes a moving component 301 and two clamping components 302. The moving component 301 is installed on the placement table 2 and connected to the driving mechanism 6. The clamping component 302 and the placement table 2 are matched through the guide structure 5, and the clamping component 302 and the moving component 301 are also matched and connected.

Specifically, the moving assembly 301 can drive the clamping assembly 302 to move under the second action of the driving mechanism 6. During the movement, the clamping assembly 302 can perform the first process, the second process, the third process and the fourth process under the action of the guide structure 5.

First process: the two clamping assemblies 302 can move relative to each other until they abut against the wheel hub, so as to clamp and fix the wheel hub;

The second process: the clamping assembly 302 can drive the clamped wheel hub to move upward to a distance set away from the placement table 2. Of course, this distance must be greater than the radius of the wheel hub, that is, it will not interfere with the rotation and flipping of the wheel hub. The specific distance is set according to actual conditions.

The third process: the clamping assembly 302 can be used to cooperate with the structure 8 to rotate and turn the wheel hub over;

The fourth process: the clamping assembly 302 is moved and reset under the action of the moving assembly 301, so that the turned-over wheel hub is loosened and placed on the placement table 2, thereby completing the turning-over process.

In this embodiment, as shown in Figures 3, 7 and 9, the clamping assembly 302 includes a clamping plate 3023, an elastic telescopic rod 3022 and a movable plate 3021. The movable plate 3021 is slidably installed in the workbench 1 through a slider 10, and the two movable plates 3021 are respectively located on the left and right sides of the placement table 2. The movable plate 3021 and the slider 10 are vertically slidably matched. It can be understood that the movable plate 3021 can slide horizontally on the workbench 1 or move vertically, and the movable plate 3021 and the placement table 2 are matched through a guide structure 5. The two elastic telescopic rods 3022 are respectively rotatably installed at the upper end positions of the opposite sides of the two movable plates 3021, and the clamping plate 3023 is fixedly installed on the opposite ends of the two elastic telescopic rods 3022, and the elastic telescopic rods 3022 and the movable plate 3021 are matched through a clutch structure 11.

Specifically, when the first process, the second process and the fourth process are performed, the clutch structure 11 is in a limited state, and the elastic telescopic rod 3022 remains stationary along the axial circumferential direction. It can be understood that the elastic telescopic rod 3022 will not rotate at this time, and the clamped wheel hub will not rotate.

When the third process is performed, that is, when the wheel hub rotates and turns over, the clutch structure 11 will be in a separated state, and then the elastic telescopic rod 3022 rotates along the axial circumferential direction. It can be understood that at this time, the elastic telescopic rod 3022 can drive the clamped wheel hub to rotate and turn over.

Specifically, as shown in Figure 8, the elastic telescopic rod 3022 includes a fixed cylinder 30221, an elastic member 30222 and an inner rod 30223, that is, the fixed cylinder 30221 is rotatably mounted on the movable plate 3021, and the inner rod 30223 is elastically slidably mounted in the fixed cylinder 30221 through the elastic member 30222. The elastic member 30222 preferably adopts a spring, and the spring is always in a compressed state. The splint 3023 is fixedly mounted on the end of the inner rod 30223.

Of course, the clamping plate 3023 preferably adopts an arc-shaped structure that fits the exterior of the automobile wheel hub, so that it can stably clamp the automobile wheel hub.

In this embodiment, as shown in Figures 3, 7 and 10, guide plates 7 are fixedly installed on both sides of the bottom end of the workbench 1, and the guide structure 5 includes a guide groove 501 arranged on the guide plate 7 and a guide block 502 arranged on the movable plate 3021, and a sliding fit is formed between the guide block 502 and the guide groove 501.

Further, as shown in FIG. 5 and FIG. 10 , in order to better cooperate between the guide block 502 and the guide groove 501 , the guide block 502 may be a roller rotatably mounted on the movable plate 3021 , that is, the roller and the guide groove 501 are in rolling cooperation.

Specifically, as shown in FIG10 , the guide groove 501 includes an upper transverse section 5011, a lower transverse section 5012 and an inclined section 5013. The upper transverse section 5011 and the lower transverse section 5012 are arranged parallel and horizontally, and the upper transverse section 5011 and the lower transverse section 5012 are connected through the inclined section 5013. It can be understood that, as shown in FIG11 and FIG12 :

During the first process, that is, when the guide block 502 slides along the lower transverse section 5012 toward the inclined section 5013, the two clamping plates 3023 will move relative to each other until they abut against the two sides of the wheel hub, and the clamping plates 3023 preferably have an arc-shaped structure that matches the wheel hub, thereby clamping and fixing the wheel hub.

During the second process, that is, when the guide block 502 slides along the inclined section 5013 toward the upper transverse section 5011, since the guide block 502 moves upward in an inclined manner, the wheel hub clamped by the clamping plate 3023 will be driven to move upward, thereby causing the wheel hub to move upward by a distance set away from the placement table 2. It should be noted that during the upward movement of the clamping plate 3023, there is also a displacement in the horizontal direction, that is, the two movable plates 3021 will also move relative to each other, and at this time, the elastic telescopic rod 3022 will be compressed and shortened, that is, the inner rod 30223 moves toward the inside of the fixed cylinder 30221, and the wheel hub is always in a clamped state.

During the third process, that is, when the guide block 502 slides along the direction of the upper transverse section 5011 away from the inclined section 5013, the elastic telescopic rod 3022 can rotate and turn over the wheel hub through the matching structure 8.

As shown in Figures 5 and 6, the matching structure 8 includes a rotating shaft 801, a matching rack 803, a matching gear 802 and an extrusion block 804. The extrusion block 804 is fixedly installed on the outside of the guide plate 7 and close to the upper cross section 5011. The matching rack 803 is elastically slidably installed at the lower end of the movable plate 3021 through a spring, and the rotating shaft 801 is rotatably installed at the lower end of the movable plate 3021. The rotating shaft 801 and the elastic telescopic rod 3022 are matched and connected through the transmission structure 9. The matching gear 802 is installed on the rotating shaft 801 through a one-way bearing, and the matching gear 802 and the matching rack 803 are meshed.

Specifically, as shown in FIG. 7 , the extrusion block 804 may adopt a right-angle trapezoidal structure; and the transmission structure 9 may adopt a chain transmission structure or a belt transmission structure.

When the third process is carried out, that is, when the guide block 502 moves with the movable plate 3021 along the upper horizontal section 5011, the mating rack 803 moves under the wedge cooperation of the extrusion block 804. It can be understood that the mating rack 803 will move along the hypotenuse of the extrusion block 804 of the right-angled trapezoidal structure, and the hypotenuse will squeeze and move the mating rack 803, so that the mating gear 802 meshing with the mating rack 803 rotates. At this time, the one-way bearing is in a biting state, that is, the mating gear 802 will rotate with the rotating shaft 801, and then the rotating shaft 801 can drive the elastic telescopic rod 3022 to rotate through the transmission structure 9. Of course, it is preferred to rotate one hundred and eighty degrees to allow the wheel hub to rotate and turn over.

In this embodiment, as shown in Figures 3 and 6, the moving component 301 includes a rotating rod 3011 and two moving blocks 3012. The rotating rod 3011 is horizontally rotatably installed at the bottom end of the workbench 1 and is connected to the driving mechanism 6. The outer sides of the rotating rod 3011 are reciprocating screw rod segments 30111. The two moving blocks 3012 and the two reciprocating screw rod segments 30111 cooperate with each other, and the moving block 3012 is sleeved on the outside of the moving plate 3021, that is, the moving plate 3021 can move up and down along the moving block 3012.

Specifically, when performing the first process, the second process and the third process, the rotating rod 3011 rotates to drive the two moving blocks 3012 to move relative to each other; when performing the fourth process, the rotating rod 3011 rotates to drive the two moving blocks 3012 to move away from each other, thereby realizing the turning over process of the wheel hub.

In this embodiment, as shown in Figure 4, the driving mechanism 6 includes a motor 601, a first transmission component 602 and a second transmission component 603. The motor 601 can be fixedly installed on the bottom end of the workbench 1 by bolts, and the input ends of the first transmission component 602 and the second transmission component 603 are connected to the output end of the motor 601, the output end of the second transmission component 603 is connected and cooperated with the rotating rod 3011, and the output end of the first transmission component 602 is connected and cooperated with the placement table 2. It can be understood that the placement table 2 can be rotatably installed on the placement table 2 through a support column, and the output end of the first transmission component 602 is connected and cooperated with the support column.

When the motor 601 performs the first action by rotating in the first direction, the placement table 2 can be rotated under the drive of the first transmission component 602. At this time, the rotating rod 3011 is disengaged from the second transmission component 603. It can be understood that at this time, the second transmission component 603 cannot drive the rotating rod 3011 to rotate, and the rotating rod 3011 is in a stationary state.

When the motor 601 performs the second action by rotating in the second direction, the rotating rod 3011 can be rotated under the drive of the second transmission component 603. At this time, the placement table 2 is disengaged from the first transmission component 602. It can be understood that at this time, the first transmission component 602 cannot drive the placement table 2 to rotate, and the placement table 2 is in a stationary state.

Specifically, as shown in FIG. 4 , the present application does not limit the specific structure of the first transmission assembly 602 , and only a specific structure is provided below for reference:

The first transmission component 602 includes a worm wheel 6021 and a worm 6022, wherein the worm 6022 is connected to a driving rod connected to the output shaft of the motor 601, and the worm wheel 6021 is installed on the support column of the placement table 2 through a one-way bearing; when the motor 601 performs the first action by rotating in the first direction, we can set the motor 601 to rotate forward, at this time the worm 6022 drives the worm wheel 6021 to rotate, and the one-way bearing is in an engaged state, thereby causing the placement table 2 to rotate; and when the motor 601 performs the second action by rotating in the second direction, we set the motor 601 to reverse, at this time the worm 6022 drives the worm wheel 6021 to rotate, but the one-way bearing is in a free state, and the worm wheel 6021 will not drive the support column to rotate, thereby causing the placement table 2 to be stationary.

It should be noted that the worm wheel 6021 and the worm 6022 can also be replaced by two bevel gears, that is, the placement table 2 is driven to rotate through the meshing transmission effect of the bevel gears. Of course, one of the bevel gears must be installed through a one-way bearing.

Further, as shown in FIG. 4 , the present application does not limit the specific structure of the second transmission assembly 603 , and only a specific structure is provided below for reference:

The second transmission assembly 603 includes a first gear 6031 and a second gear 6032, wherein the second gear 6032 is mounted on a driving rod connected to the output shaft of the motor 601, and the first gear 6031 is mounted on the rotating rod 3011 through a one-way bearing. When the motor 601 performs the second action by rotating in the second direction, we assume that the motor 601 is reversed, and the one-way bearing is in an engaged state. At this time, the second gear 6032 acts on the first gear 6031 to rotate, thereby driving the rotating rod 3011 to rotate; and when the motor 601 performs the first action by rotating in the first direction, we assume that the motor 601 rotates forward, and the one-way bearing is in a free state, that is, at this time, the second gear 6032 acts on the first gear 6031 to rotate, but the first gear 6031 will not drive the rotating rod 3011 to rotate, thereby not driving the flipping mechanism 3.

It should be noted that the second transmission assembly 603 can also adopt a chain drive or a belt drive. Of course, one of the sprockets or one of the belt wheels in the transmission must be installed through a one-way bearing.

In this embodiment, as shown in FIG. 9 , the clutch structure 11 includes a limit block 1101 and two limit grooves 1102. The limit block 1101 preferably adopts a spherical structure, and the limit groove 1102 adopts a spherical groove shape adapted to the limit block 1101. When the limit block 1101 and the limit groove 1102 cooperate, the clutch structure 11 is in a limit state; when the limit block 1101 and the limit groove 1102 are dislocated and separated, the clutch structure 11 is in a separated state; and there are many ways to set the limit block 1101 and the limit groove 1102, including but not limited to the following two:

Method 1: The limiting block 1101 is elastically slidably installed in the moving plate 3021 through a spring, and the two limiting grooves 1102 are symmetrically arranged on the elastic telescopic rod 3022 .

Mode 2: The limiting block 1101 is elastically slidably installed on the elastic telescopic rod 3022 through a spring, and the two limiting grooves 1102 are symmetrically arranged in the movable plate 3021 .

It can be understood that in the initial state, the limit block 1101 cooperates with one of the limit grooves 1102 under the action of the spring, and the clutch structure 11 is in a limited state at this time; when the wheel hub is turned over, that is, when the elastic telescopic rod 3022 is rotated, the limit block 1101 will be forcibly separated from this limit groove 1102, and when the wheel hub is flipped one hundred and eighty degrees, the limit block 1101 will cooperate with the other limit groove 1102, thereby limiting the clutch structure 11 again.

The working principle of the present invention is:

First, the wheel hub to be sprayed is placed on the placement table 2, and the staff holds the spray gun D to spray the wheel hub. At this time, the motor 601 is started to rotate forward, and the worm 6022 drives the worm wheel 6021 to rotate, and the one-way bearing on the worm wheel 6021 is in a bite state, thereby causing the placement table 2 to rotate, and then the outside of the wheel hub is evenly sprayed.

After the spraying is completed, we need to turn the wheel hub over for spraying. At this time, start the motor 601 to reverse, and the one-way bearing on the worm gear 6021 will be in a free state, so the placement table 2 will stop rotating; at this time, the second gear 6032 acts on the first gear 6031 to rotate, and the one-way bearing on the first gear 6031 is in a bite state, which can drive the rotating rod 3011 to rotate, and the two reciprocating screw rod segments 30111 on the rotating rod 3011 will act on the two moving blocks 3012 to move relative to each other.

The first process: when the guide block 502 slides along the lower horizontal section 5012 toward the inclined section 5013, as shown in Figure a of Figure 11, the two moving blocks 3012 will drive the two moving plates 3021 to move relative to each other, and then the two clamping plates 3023 will move relative to each other until they abut against the wheel hub, thereby clamping and fixing the wheel hub.

The second process: when the guide block 502 slides along the inclined section 5013 toward the upward horizontal section 5011, as shown in Figure b in Figure 11, the two movable plates 3021 will move upward relative to each other, so that the wheel hub clamped by the clamping plate 3023 will be driven to move upward, and then the wheel hub will move up away from the placement table 2 by a distance set, and this distance will not interfere with the rotation of the wheel hub.

The third process: when the guide block 502 slides along the direction of the upper horizontal section 5011 away from the inclined section 5013, as shown in Figure c in Figure 12, the two movable plates 3021 will move relative to each other again, and the matching rack 803 will move along the hypotenuse of the extrusion block 804 of the right-angled trapezoidal structure, and the hypotenuse will squeeze and move the matching rack 803, so that the matching gear 802 meshing with the matching rack 803 rotates. At this time, the one-way bearing is in a biting state, that is, the matching gear 802 will rotate with the rotating shaft 801, and then the rotating shaft 801 can drive the elastic telescopic rod 3022 to rotate one hundred and eighty degrees through the transmission structure 9, so that the wheel hub rotates and turns over, and then the clutch structure 11 limits the turned wheel hub again.

The fourth process: that is, when the guide block 502 returns from the upper horizontal section 5011 to the lower horizontal section 5012, as shown in Figure d in Figure 12, after the two movable plates 3021 move relative to each other to the extreme position, under the action of the reciprocating screw rod section 30111, the two movable blocks 3012 will drive the two movable plates 3021 to move away from each other, and at this time, although the matching rack 803 will move and reset under the elastic force of the spring, the one-way bearing on the matching gear 802 is in a free state, and the rotating shaft 801 will not drive the wheel hub to flip and reset through the transmission structure 9, and then reset to the lower horizontal section 5012 through the inclined section 5013, that is, the flipped wheel hub moves down to the placement table 2, and then the two clamps 3023 move away from the wheel hub to loosen it.

It should be noted that, during the clamping and flipping process, the two elastic telescopic rods 3022 will move relative to each other, but they are always in an elastically retractable state and will not interfere with the flipping process; when spraying the wheel hub, multiple dust collector heads 4 can also be installed on the workbench 1. Of course, the dust collector heads 4 are connected to the dust collection equipment, so as to absorb the sprayed powder and reduce the impact on the working environment.

It needs to be further explained that, after clamping and turning over, if the coating has been carried out before the clamping position is turned over, the coating film may be damaged when the clamping plate 3023 is clamped. Therefore, when coating, the staff can first avoid the clamping position corresponding to the automobile wheel hub, and then spray it after the automobile wheel hub is turned over, thereby improving the quality of the coating film after spraying.

The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application. These changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims (1)

1. A forming apparatus comprising a raw material processing apparatus for combining an acrylic resin with an organic dibasic acid to obtain a powder raw material, a spraying apparatus adapted to apply the powder raw material to a vehicle hub, and a baking apparatus adapted to dry the applied vehicle hub;

The raw materials of the acrylic resin comprise, by weight, 25-55 parts of styrene, 10-20 parts of butyl acrylate, 10-15 parts of isooctyl acrylate, 5-12 parts of isobornyl methacrylate, 6-14 parts of methyl methacrylate, 20-50 parts of glycidyl methacrylate, 0.5-1.5 parts of an initiator, 30-55 parts of an organic solvent and 0.2-1 part of a chain transfer agent;

The spraying equipment comprises a workbench, a driving mechanism, a placing table and a turning mechanism, wherein the driving mechanism is installed on the workbench, the placing table is rotatably installed on the workbench and connected with the driving mechanism, the placing table is used for placing an automobile hub to be sprayed, and the turning mechanism is installed on the workbench and connected with the driving mechanism; when the automobile hub is sprayed, the driving mechanism is suitable for driving the placing table to rotate through a first action; the turn-over mechanism is adapted to remain stationary at this time; when the turning over of the automobile hub is carried out, the driving mechanism is suitable for driving the turning over mechanism to rotationally turn over the automobile hub through a second action; the rest table is kept stationary at this time;

The turnover mechanism comprises a moving assembly and two clamping assemblies, the moving assembly is arranged on the placing table and connected with the driving mechanism, the clamping assemblies are matched with the placing table through a guide structure, and the clamping assemblies are matched and connected with the moving assembly; the moving component is suitable for being driven by the driving mechanism to drive the clamping component to move, and then the clamping component performs a first process, a second process, a third process and a fourth process under the action of the guiding structure; wherein the first process: the clamping assembly is suitable for moving until the clamping assembly abuts against the automobile hub, so that the automobile hub is clamped and fixed; the second process is as follows: the clamping assembly is suitable for driving the automobile hub to move upwards to be away from the placing table by a set distance; and a third process: the clamping assembly is suitable for enabling the automobile hub to rotate and turn over through a matching structure; fourth process: the clamping assembly is suitable for moving and resetting so that the turned automobile hub is loosened and placed on the placing table;

The clamping assembly comprises clamping plates, elastic telescopic rods and moving plates, the moving plates are slidably mounted in the workbench through sliding blocks, the two moving plates are respectively located on two sides of the placing table, the moving plates are vertically slidably matched with the sliding blocks and matched with the placing table through guide structures, the moving plates and the moving mechanisms are connected and matched, the two elastic telescopic rods are respectively rotatably mounted at the upper ends of two opposite sides of the two moving plates, the clamping plates are mounted at the ends of the elastic telescopic rods, and the elastic telescopic rods are matched with the moving plates through clutch structures; when the first process, the second process and the fourth process are carried out, the clutch structure is in a limiting state, and then the elastic telescopic rod is kept static along the axial circumferential direction; when the third process is carried out, the clutch structure is in a separation state, and then the elastic telescopic rod rotates along the axial circumferential direction, so that the automobile hub rotates and turns over;

The guide plates are arranged on two sides of the bottom end of the workbench, the guide structure comprises guide grooves arranged on the guide plates and guide blocks arranged on the moving plate, and the guide blocks and the guide grooves form sliding fit; the guide groove comprises an upper transverse section, a lower transverse section and an inclined section, wherein the upper transverse section and the lower transverse section are parallel and horizontally arranged, and the upper transverse section and the lower transverse section are communicated through the inclined section; when the guide block slides along the lower transverse section to the inclined section, the clamping plate is suitable for moving until the clamping plate abuts against the automobile hub; when the guide block slides along the inclined section to the upper transverse section, the clamping plate is suitable for driving the automobile hub to move upwards to be away from the placing table by a set distance; when the guide block slides along the upper transverse section far away from the inclined section, the elastic telescopic rod is suitable for enabling the automobile hub to rotate and turn over through a matching structure;

the matching structure comprises a rotating shaft, a matching rack, a matching gear and an extrusion block, wherein the extrusion block is arranged outside the guide plate and is close to the upper transverse section, the matching rack is elastically and slidably arranged at the lower end of the moving plate, the rotating shaft is rotatably arranged at the lower end of the moving plate, the rotating shaft and the elastic telescopic rod are in matching connection through a transmission structure, the matching gear is arranged on the rotating shaft through a one-way bearing, and the matching gear is meshed with the matching rack; when the third process is carried out, the matched racks move under the wedge-shaped fit of the extrusion blocks so as to enable the meshed matched gears to rotate, at the moment, the one-way bearings are in a meshed state, and then the rotating shaft drives the elastic telescopic rod to rotate through the transmission structure so as to enable the automobile hub to rotate and turn over;

The movable assembly comprises a rotating rod and two movable blocks, the rotating rod is rotatably arranged at the bottom end of the workbench and is connected with the driving mechanism, the two sides of the outer part of the rotating rod are provided with reciprocating screw rod sections, the two movable blocks are respectively matched with the two reciprocating screw rod sections, and the movable blocks are sleeved outside the movable plate; when the first process, the second process and the third process are carried out, the rotating rod rotates to drive the two moving blocks to move relatively; when the fourth process is carried out, the rotating rod rotates to drive the two moving blocks to move oppositely; further realizing the turn-over process of the automobile hub;

the driving mechanism comprises a motor, a first transmission assembly and a second transmission assembly, the motor is arranged at the bottom end of the workbench, the input ends of the first transmission assembly and the second transmission assembly are connected with the output end of the motor, the output end of the first transmission assembly is connected with the placing table, and the output end of the second transmission assembly is connected with the rotating rod; when the motor rotates in a first direction to perform a first action, the placement table is suitable for being driven by the first transmission assembly to rotate, and the rotating rod is disengaged from the second transmission assembly; when the motor rotates in a second direction to perform a second action, the rotating rod is suitable for being driven by the second transmission assembly to rotate, and the placing table is disengaged from the first transmission assembly.