Environment-friendly coating production process for automotive upholstery

Abstract

The invention provides an environment-friendly coating production process for automotive upholstery, and belongs to the technical field of chemical coatings. Comprising the following steps: S1, weighing water-based acrylic resin, a plasticizer, a filler, a coalescing agent, sodium silicate, glass fibers, nano ceramic particles and deionized water in corresponding parts by weight for later use; s2, adding the deionized water and the water-based acrylic resin in the S1 into a reaction kettle together, and rapidly stirring by using an electric stirrer, and S3, grinding the filler, sodium silicate, glass fiber and nano ceramic particles in the S1 into powder by using a ball mill. The spraying modules slide along the outer side of the arc rail, a first gear is meshed with an arc rack in the process, so that the spraying modules can swing in an angle mode, the front face and the back face of a workpiece can be synchronously sprayed by linkage of the two spraying modules, and the arc joint face is located in a staggered area; the problem that large chromatic aberration exists in the arc joint face can be effectively solved, and the reworking frequency of operators is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of chemical coatings, and in particular to an environmentally friendly coating production process for automobile interior trims. Background Art

[0002] With the development of the automobile industry, various materials are applied to automobiles, especially automobile interiors such as cab dashboards, door inner panels, seats, etc. However, automobile interiors are prone to defects such as monotonous color and mottled defects during molding and processing, and are prone to aging, brittleness, scratches, stains, static electricity and other problems. Therefore, it is necessary to apply finishing paint to give the material a special color or a certain gloss, and cover the surface defects of the material itself to make it have a more attractive appearance.

[0003] In the spraying process of existing steering wheels, paint is often sprayed between spray guns, and the single side is sprayed before turning over to continue spraying. This spraying method easily leads to paint joints near the turned side of the sprayed workpiece, and there are color differences, which requires operators to manually connect the covers to make up for the color difference later. At the same time, due to the long continuous working time and large flow rate of the spray gun, the operator needs to replace the workpiece and turn it over in the middle. The spray material is easy to accumulate at the nozzle of the spray gun, which is easy to produce paint agglomerates and block the nozzle, affecting the normal operation of the equipment. The operator is required to use a needle to remove the agglomerates, which is difficult to remove and wastes time. Therefore, the present application provides an environmentally friendly coating production process for automotive interior parts to meet the needs. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an environmentally friendly coating production process for automotive interior parts, so as to solve the problem that the existing spray gun is often used for spraying paint, and after spraying a single surface, it is turned over to continue spraying. This spraying method easily leads to paint surface joints near the flipped surface of the sprayed workpiece, and there are color differences. At the same time, due to the long continuous working time and large flow rate of the spray gun, the intermediate operator needs to replace the workpiece and flip the surface. The spray material is easy to accumulate at the nozzle of the spray gun, which is easy to produce paint agglomeration and block the nozzle, affecting the normal operation of the equipment. The operator needs to use a needle to remove the agglomeration, which is difficult to remove and wastes time.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] An environmentally friendly coating production process for automobile interior parts comprises the following steps:

[0007] S1, weigh corresponding weight portions of water-based acrylic resin, plasticizer, filler, film-forming aid, sodium silicate, glass fiber, nano-ceramic particles and deionized water for later use;

[0008] S2, adding the deionized water and water-based acrylic resin in S1 into the reaction kettle, and stirring rapidly with an electric stirrer;

[0009] S3, grinding the filler, sodium silicate, glass fiber and nano-ceramic particles in S1 into powder using a ball mill;

[0010] S4, adding the filler, sodium silicate, glass fiber and nano-ceramic powder ground in S3 into a reaction kettle and stirring and mixing, adding a plasticizer and a film-forming aid while stirring with an electric stirrer to prepare a spray liquid;

[0011] S5. Add trichloroethylene, sulfonic acid, sodium stearate and water into the water tank of the ultrasonic cleaning machine and stir evenly;

[0012] S6. Place the interior parts to be sprayed into the water tank of the ultrasonic cleaning machine for ultrasonic cleaning, and finally perform hot air drying.

[0013] S7, placing the interior decoration parts dried in S6 in a spraying device, and spraying a layer of the spraying liquid prepared in S4 evenly on the surface thereof using a spray gun;

[0014] S8, drying the interior parts sprayed in S7.

[0015] Optionally, the spraying equipment described in the above step S7 includes a box body, a placing table is provided on the inner side of the box body, an electric push rod is provided on the inner side of the box body, slide grooves are symmetrically provided on the inner wall of the box body, a fixing clamp is provided on the inner side of the box body, and also includes a transmission component, the transmission component is installed on the inner side of the slide groove, the transmission component is used to transmit the mechanism, a spraying component, the spraying component is installed on the inner side of the slide groove, the spraying component is used to spray paint, a cleaning component, the cleaning component is installed on one side of the spraying component, the cleaning component is used to clean the nozzle to prevent blockage, and a filling component, the filling component is installed at the end of the cleaning component, and the filling component is used to fill the cleaning component with cleaning agent.

[0016] Optionally, the transmission assembly includes a mounting frame, which is mounted on the inner side of the slide slot, one side of the mounting frame is connected to the electric push rod, the mounting frame slides on the inner side of the slide slot, two groups of reciprocating screw rods are symmetrically mounted on the inner side of the mounting frame, the reciprocating screw rods rotate on the inner side of the mounting frame, and the right end of each group of reciprocating screw rods is connected to a bevel gear group.

[0017] Optionally, a transmission rod is connected between the ends of a bevel gear in one of the two bevel gear sets, and the transmission rod rotates on the inner side of the mounting frame. An end of the reciprocating screw rod located on the lower side is connected to a telescopic rod one, and the end of the telescopic rod one is connected to a bevel gear set two. An end of a bevel gear in the bevel gear set two is connected to a driving motor, and the driving motor is installed on the inner side of the box body. The output end of the driving motor is connected to the bottom end of the placement table through a transmission shaft.

[0018] Optionally, the spraying assembly includes a slider 1, which is installed on the outside of the reciprocating screw 1, the end of the slider 1 is connected to a telescopic rod 2, the end of the telescopic rod 2 is connected to a limiting seat, the inner side of the limiting seat is nested with an arc rail, and the arc rail is symmetrically installed on the inner side of the mounting frame.

[0019] Optionally, the circular arc rail is symmetrically arranged in two groups, an arc rack is installed on one side of the circular arc rail, the arc rack is installed on the inner side of the mounting frame, the arc rack is meshed with gear one, the gear one is installed on the inner side of the limit seat, a spray module is sleeved on the connecting shaft of the gear one, the spray module is connected with a paint tank through a pipeline, the paint tank is installed on the outer side of the box, and one side of the spray module is connected to a contact block one.

[0020] Optionally, the cleaning assembly comprises transmission rollers, which are symmetrically mounted on a mounting frame, and two groups of transmission rollers are provided, with cleaning blocks being equidistantly arranged on the outer sides of each group of transmission rollers.

[0021] Optionally, the end of the transmission roller is connected to gear 2, the gear 2 is meshed with a rack, the rack slides on the outside of the mounting frame, the end of the rack is connected to contact block 2, a sponge block is provided on one side of the two groups of transmission rollers, the bottom end of the sponge block is connected to a mounting box, and the mounting box is mounted on one side of the mounting frame.

[0022] Optionally, the filling assembly includes a storage box, which is installed on the outside of the box body, and is connected to a one-way valve through a pipeline. The end of the one-way valve is connected to a piston cylinder, and a piston is nested inside the piston cylinder. The piston slides inside the piston cylinder, and the end of the piston is connected to a connecting rod.

[0023] Optionally, the end of the connecting rod is connected to a slider 2, a reciprocating screw 2 is nested inside the slider 2, the reciprocating screw 2 rotates on one side of the mounting frame, a one-way valve 2 is connected to one side of the piston cylinder, the end of the reciprocating screw 2 is connected to a bevel gear set 3, and the end of a bevel gear in the bevel gear set 3 is connected to the end of gear 2.

[0024] Compared with the prior art, the present invention has at least the following beneficial effects:

[0025] In the above scheme, a spraying assembly is set up, and the spraying module slides along the outer side of the arc rail. During the process, the gear 1 is meshed with the arc rack, so that the spraying module can swing at an angle. By linking the two groups of spraying modules, the front and back sides of the workpiece can be sprayed synchronously, and the arc joint surfaces are in the staggered area, which can effectively avoid the problem of large color difference on the arc joint surfaces. The operation is simple and the number of rework by the operator is reduced.

[0026] By setting up a cleaning component, a cleaning block made of rubber is used to contact the end of the spray module to scrape off the paint accumulated at the nozzle position. The scraping is performed when the paint is not completely dry to prevent the paint from accumulating at the nozzle and clogging the spray module. At the same time, the cleaning block stained with paint rotates one circle through the transmission roller and then contacts the sponge block. The sponge block performs a secondary cleaning on the surface of the cleaning block to prevent paint impurities from adhering to the surface of the cleaning block and causing accumulation at the nozzle position, which makes it impossible to effectively clean the paint.

[0027] By setting up a filling component, the reciprocating motion of the reciprocating screw rod 2 allows the cleaning agent in the piston cylinder to be squeezed and flow out from the one-way valve 2 to wet the sponge block, so that the cleaning agent is always attached to the surface of the sponge block, thereby providing a cleaning effect and maintaining the cleanliness of the sponge block. The cleaning agent can be continuously replenished to avoid failure of secondary cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0029] Figure 1 This is a three-dimensional structural diagram of the environmentally friendly coating production process for automotive interior parts.

[0030] Figure 2 It is a schematic diagram of the three-dimensional structure of the box.

[0031] Figure 3 Schematic diagram of the three-dimensional structure of the assembly of the box body, paint tank and storage box.

[0032] Figure 4 It is a schematic diagram of the three-dimensional structure of the transmission component.

[0033] Figure 5 Schematic diagram of the three-dimensional structure of the transmission component and the spray component assembly.

[0034] Figure 6 It is a schematic diagram of the three-dimensional structure of the spraying component.

[0035] Figure 7 It is a schematic diagram of the three-dimensional structure of the cleaning component.

[0036] Figure 8 for Figure 7 Schematic diagram of the three-dimensional structure of A.

[0037] Fig. 9 Schematic diagram of the three-dimensional structure of the cleaning component and the filling component.

[0038] Fig.10 It is a schematic diagram of the three-dimensional structure of the filling component.

[0039] Reference numerals:

[0040] 1. Box; 2. Placement table; 3. Electric push rod; 4. Slide; 5. Transmission assembly; 51. Mounting frame; 52. Reciprocating screw rod 1; 53. Bevel gear set 1; 54. Transmission rod; 55. Telescopic rod 1; 56. Bevel gear set 2; 57. Drive motor; 6. Spraying assembly; 61. Slider 1; 62. Telescopic rod 2; 63. Limit seat; 64. Circular arc rail; 65. Circular arc rack; 66. Gear 1; 67. Spraying module; 68. Paint can; 69, contact block one; 7, cleaning assembly; 71, transmission roller; 72, cleaning block; 73, gear two; 74, rack; 75, contact block two; 76, sponge block; 77, installation box; 8, filling assembly; 81, storage box; 82, one-way valve one; 83, piston cylinder; 84, piston; 85, connecting rod; 86, slider two; 87, reciprocating screw two; 88, one-way valve two; 89, bevel gear set three; 9, fixing fixture.

[0041] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0042] The following is a detailed description of an environmentally friendly coating production process for automotive interior parts provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0043] It should be noted that the references to "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0044] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0045] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0046] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0047] like Figures 1 to 10 As shown, an embodiment of the present invention provides an environmentally friendly coating production process for automobile interior decoration parts, comprising the following steps:

[0048] S1, weigh corresponding weight portions of water-based acrylic resin, plasticizer, filler, film-forming aid, sodium silicate, glass fiber, nano-ceramic particles and deionized water for later use;

[0049] S2, adding the deionized water and water-based acrylic resin in S1 into the reaction kettle, and stirring rapidly with an electric stirrer;

[0050] S3, grinding the filler, sodium silicate, glass fiber and nano-ceramic particles in S1 into powder using a ball mill;

[0051] S4, adding the filler, sodium silicate, glass fiber and nano-ceramic powder ground in S3 into a reaction kettle and stirring and mixing, adding a plasticizer and a film-forming aid while stirring with an electric stirrer to prepare a spray liquid;

[0052] S5. Add trichloroethylene, sulfonic acid, sodium stearate and water into the water tank of the ultrasonic cleaning machine and stir evenly;

[0053] S6. Place the interior parts to be sprayed into the water tank of the ultrasonic cleaning machine for ultrasonic cleaning, and finally perform hot air drying.

[0054] S7, placing the interior decoration parts dried in S6 in a spraying device, and spraying a layer of the spraying liquid prepared in S4 evenly on the surface thereof using a spray gun;

[0055] S8, drying the interior parts sprayed in S7.

[0056] like Figures 1 to 3 As shown, the spraying equipment in the above step S7 includes a box body 1, a placing table 2 is provided on the inner side of the box body 1, an electric push rod 3 is provided on the inner side of the box body 1, a slide groove 4 is symmetrically provided on the inner wall of the box body 1, a fixing fixture 9 is provided on the inner side of the box body 1, and also includes a transmission component 5, the transmission component 5 is installed on the inner side of the slide groove 4, the transmission component 5 is used to transmit the mechanism, a spraying component 6, the spraying component 6 is installed on the inner side of the slide groove 4, the spraying component 6 is used to spray paint, a cleaning component 7, the cleaning component 7 is installed on one side of the spraying component 6, the cleaning component 7 is used to clean the nozzle to prevent blockage, and a filling component 8, the filling component 8 is installed at the end of the cleaning component 7, and the filling component 8 is used to fill the cleaning component 7 with cleaning agent.

[0057] like Figure 4 and Figure 5As shown, the transmission assembly 5 includes a mounting frame 51, which is mounted on the inner side of the slide slot 4, one side of the mounting frame 51 is connected to the electric push rod 3, the mounting frame 51 slides on the inner side of the slide slot 4, and two groups of reciprocating screw rods 52 are symmetrically mounted on the inner side of the mounting frame 51, the reciprocating screw rods 52 rotate on the inner side of the mounting frame 51, the right end of each group of reciprocating screw rods 52 is connected with a bevel gear set 53, a transmission rod 54 is connected between the ends of one bevel gear in the two groups of bevel gear sets 53, the transmission rod 54 rotates on the inner side of the mounting frame 51, the end of the reciprocating screw rod 52 located on the lower side is connected with a telescopic rod 55, the end of the telescopic rod 55 is connected with a bevel gear set 2 56, and one end of a bevel gear in the bevel gear set 2 56 is connected with a driving motor 57, the driving motor 57 is mounted on the inner side of the box body 1, and the output end of the driving motor 57 is connected to the bottom end of the placement table 2 through a transmission shaft.

[0058] By setting the transmission assembly 5, when spraying the steering wheel workpiece, the operator places the workpiece on the placement table 2, clamps the inner hole position of the steering wheel through the fixing fixture 9 in the box body 1, and controls the electric push rod 3 through the control module (not marked in the figure), so that the electric push rod 3 pushes the mounting frame 51 to slide in the slide groove 4 toward the side close to the workpiece, and the telescopic rod 55 is retracted to avoid position interference caused by the fixed position of the mounting frame 51 when the operator loads and unloads the workpiece, and starts the drive motor 57, which drives the drive motor 57 through the transmission shaft. The movable placement table 2 rotates, and at the same time, the driving motor 57 drives the bevel gear set 2 56 to mesh and rotate, and the end of a bevel gear in the bevel gear set 2 56 transmits the reciprocating screw 52 located below the mounting frame 51 through the telescopic rod 1 55, and the right end of the reciprocating screw 52 drives the bevel gear set 1 53 to rotate, and the output end of a bevel gear in the bevel gear set 1 53 located below rotates the bevel gear set 1 53 located above through the transmission rod 54, thereby driving the reciprocating screw 1 52 located above the mounting frame 51 to rotate.

[0059] like Figure 6 As shown, the spraying assembly 6 includes a slider 61, which is sleeved and installed on the outer side of the reciprocating screw rod 52, and the end of the slider 61 is connected to the telescopic rod 62, and the end of the telescopic rod 62 is connected to the limit seat 63. The inner side of the limit seat 63 is nested with a circular arc rail 64, and the circular arc rail 64 is symmetrically installed on the inner side of the mounting frame 51. The circular arc rail 64 is symmetrically arranged in two groups, and a circular arc rack 65 is installed on one side of the circular arc rail 64. The circular arc rack 65 is installed on the inner side of the mounting frame 51, and the circular arc rack 65 and the gear 66 are meshed with each other. The gear 66 is installed on the inner side of the limit seat 63, and a spraying module 67 is sleeved on the connecting shaft of the gear 66. The spraying module 67 is connected to the paint tank 68 through a pipeline, and the paint tank 68 is installed on the outer side of the box body 1. One side of the spraying module 67 is connected to a contact block 69;

[0060] By setting the spraying assembly 6, during the rotation of the reciprocating screw rod 52, the slider 61 outside the reciprocating screw rod 52 is driven to move. Since the slider 61 is connected to the limit seat 63 through the telescopic rod 2 62, the limit seat 63 slides on the outside of the arc track 64 for limiting. When the limit seat 63 slides on the outside of the arc track 64, the telescopic rod 2 62 moves and retracts to provide support for the slider 61 to prevent the slider 61 from rotating on the outside of the reciprocating screw rod 52. The gear 66 meshes with the arc rack 65 to rotate during the movement of the slider 61, and the spraying module 67 rotates with the gear 66 (when it is located at the center of the arc rack 65, the spraying module 67 is in the vertical direction). The paint in the paint tank 68 is transported into the spray module 67 through the pipeline, and the spray module 67 rotates along the arc track of the arc rack 65 to spray the steering wheel surface, avoiding the problem of large color difference at the spray joint in the conventional spraying method. The spray module 67 slides along the outer side of the arc track 64, and the gear 1 66 is engaged with the arc rack 65 during the process, so that the spray module 67 can swing at an angle. By linking the two groups of spray modules 67, the front and back sides of the workpiece can be sprayed synchronously, and the arc joint surface is in the staggered area, which can effectively avoid the problem of large color difference on the arc joint surface. The operation is simple and the number of rework by the operator is reduced.

[0061] like Figures 7 to 9 As shown, the cleaning assembly 7 includes a transmission roller 71, which is symmetrically mounted on the mounting frame 51. Two groups of transmission rollers 71 are provided, and a cleaning block 72 is equidistantly arranged on the outer side of each group of transmission rollers 71. A second gear 73 is connected to the end of the transmission roller 71, and the second gear 73 is meshed with a rack 74. The rack 74 slides on the outer side of the mounting frame 51, and a second contact block 75 is connected to the end of the rack 74. A sponge block 76 is provided on one side of the two groups of transmission rollers 71, and a mounting box 77 is connected to the bottom end of the sponge block 76. The mounting box 77 is mounted on one side of the mounting frame 51.

[0062] By setting the cleaning component 7, when the slider 61 moves to the rightmost end of the reciprocating screw 52 as the reciprocating screw 52 rotates, the gear 66 drives the spray module 67 to move along the track by meshing with the arc rack 65, and the contact block 69 contacts and squeezes the contact block 2 75 during the movement, and the contact block 2 75 drives the rack 74 to move vertically, and the rack 74 and the gear 2 73 mesh with each other, and the gear 2 73 drives the transmission roller 71 to rotate, and the cleaning block 72 on the switching surface contacts the end of the spray module 67. Since the cleaning block 72 is made of rubber material, the cleaning block 72 contacts the end of the spray module 67 to scrape off the paint accumulated at the nozzle position to avoid paint accumulation. The accumulated paint lumps up at the nozzle and blocks the spray module 67. After the cleaning block 72 stained with paint rotates one circle through the transmission roller 71, it contacts the sponge block 76. The sponge block 76 performs secondary cleaning on the surface of the cleaning block 72. The cleaning block 72 made of rubber material contacts the end of the spray module 67 to scrape off the paint accumulated at the nozzle position. The paint is scraped off when it is not completely dry to avoid the paint accumulating at the nozzle and clogging the spray module 67. At the same time, the cleaning block 72 stained with paint rotates one circle through the transmission roller 71 and contacts the sponge block 76. The sponge block 76 performs secondary cleaning on the surface of the cleaning block 72 to avoid the paint impurities adhering to the surface of the cleaning block 72 and accumulating at the nozzle position, which makes it impossible to effectively clean.

[0063] like Fig. 9 and Fig.10 As shown, the filling assembly 8 includes a storage box 81, which is installed on the outside of the box body 1, and is connected to a one-way valve 82 through a pipeline. The end of the one-way valve 82 is connected to a piston cylinder 83, and a piston 84 is nested inside the piston cylinder 83. The piston 84 slides inside the piston cylinder 83, and the end of the piston 84 is connected to a connecting rod 85. The end of the connecting rod 85 is connected to a slider 86, and a reciprocating screw rod 87 is nested inside the slider 86. The reciprocating screw rod 87 rotates on one side of the mounting frame 51, and one side of the piston cylinder 83 is connected to a one-way valve 88, and the end of the reciprocating screw rod 87 is connected to a bevel gear set 89, and the end of one bevel gear in the bevel gear set 89 is connected to the end of the gear 2 73;

[0064] By setting the filling assembly 8, when the gear 2 73 rotates, it drives the bevel gear set 3 89 to rotate, and one of the bevel gear output ends in the bevel gear set 3 89 drives the reciprocating screw rod 2 87 to rotate, and the slider 2 86 slides vertically through the limit of the connecting rod 85, and the connecting rod 85 pulls the piston 84 to move vertically upward inside the piston cylinder 83, and the cleaning agent in the storage box 81 enters the chamber of the piston cylinder 83 through the pipeline and the one-way valve 1 82. When the slider 2 86 reaches the top of the reciprocating screw rod 2 87 and moves toward the bottom of the reciprocating screw rod 2 87 again, the connecting rod 85 drives the piston 84 The inner side of the piston cylinder 83 moves vertically downward, and the cleaning agent in the piston cylinder 83 is squeezed and flows out from the one-way valve 88 to wet the sponge block 76, so that the cleaning agent is always attached to the surface of the sponge block 76, which can be used to clean the nozzle position of the spray module 67. Through the reciprocating motion of the reciprocating screw rod 87, the cleaning agent in the piston cylinder 83 is squeezed and flows out from the one-way valve 88 to wet the sponge block 76, so that the cleaning agent is always attached to the surface of the sponge block 76, which can provide a cleaning effect, maintain the cleanliness of the sponge block 76, and continuously replenish the cleaning agent to avoid failure of secondary cleaning.

[0065] The working principle of the technical solution provided by the present invention is as follows:

[0066] When spraying the steering wheel workpiece, the operator places the workpiece on the placement table 2, clamps the inner hole position of the steering wheel through the fixing fixture 9 in the box body 1, controls the electric push rod 3 through the control module (not marked in the figure), and makes the electric push rod 3 push the mounting frame 51 to slide in the slide groove 4 toward the side close to the workpiece, and the telescopic rod 55 is retracted to avoid position interference caused by the fixed position of the mounting frame 51 when the operator loads and unloads the workpiece, and starts the drive motor 57, which drives the placement table 2 through the transmission shaft. The bevel gear set 56 is driven by the driving motor 57 to rotate in meshing manner. The end of one bevel gear in the bevel gear set 56 transmits the reciprocating screw 52 located below the mounting frame 51 through the telescopic rod 55. The right end of the reciprocating screw 52 drives the bevel gear set 53 to rotate. The output end of a bevel gear in the bevel gear set 53 located below rotates the bevel gear set 53 located above through the transmission rod 54, thereby driving the reciprocating screw 52 located above the mounting frame 51 to rotate.

[0067] During the rotation of the reciprocating screw rod 52, the slider 61 on the outside of the reciprocating screw rod 52 is driven to move. Since the slider 61 is connected to the limit seat 63 through the telescopic rod 2 62, the limit seat 63 slides on the outside of the arc track 64 for limit. When the limit seat 63 slides on the outside of the arc track 64, the telescopic rod 2 62 moves and retracts to provide support for the slider 61 to prevent the slider 61 from rotating on the outside of the reciprocating screw rod 52. The gear 66 meshes with the arc rack 65 and rotates during the movement of the slider 61. The spray module 67 rotates with the gear 66 (when it is located at the center of the arc rack 65, the spray module 67 is in a vertical state). The paint in the paint tank 68 is transported into the spray module 67 through a pipeline. The spray module 67 rotates along the arc trajectory of the arc rack 65 to spray the steering wheel surface, avoiding the problem of large color difference at the spray joint in the conventional spraying method.

[0068] When the slider 61 moves to the rightmost end of the reciprocating screw rod 52 as the reciprocating screw rod 52 rotates, the gear 66 drives the spray module 67 to move along the trajectory by meshing with the arc rack 65. The contact block 69 contacts and squeezes the contact block 2 75 during the movement. The contact block 2 75 drives the rack 74 to move vertically. The rack 74 meshes with the gear 2 73. The gear 2 73 drives the transmission roller 71 to rotate. The cleaning block 72 on the switching surface contacts the end of the spray module 67. Since the cleaning block 72 is made of rubber material, the cleaning block 72 contacts the end of the spray module 67 to scrape off the paint accumulated at the nozzle position to prevent the paint from accumulating at the nozzle and clogging the spray module 67. After the cleaning block 72 with paint rotates one circle through the transmission roller 71, it contacts the sponge block 76. The sponge block 76 performs secondary cleaning on the surface of the cleaning block 72 to prevent the paint impurities from adhering to the surface of the cleaning block 72 and causing accumulation at the nozzle position, which makes it impossible to effectively clean.

[0069] When gear 2 73 rotates, it drives bevel gear set 3 89 to rotate, and an output end of a bevel gear in bevel gear set 3 89 drives reciprocating screw rod 2 87 to rotate, and slider 2 86 slides vertically through the limit of connecting rod 85, and connecting rod 85 pulls piston 84 to move vertically upward inside piston cylinder 83, and the cleaning agent in storage box 81 enters the chamber of piston cylinder 83 through pipeline and one-way valve 1 82. When slider 2 86 reaches the top of reciprocating screw rod 2 87 and moves toward the bottom of reciprocating screw rod 2 87 again, connecting rod 85 drives piston 84 to move vertically downward inside piston cylinder 83, and the cleaning agent in piston cylinder 83 is squeezed out from one-way valve 2 88, wetting sponge block 76, so that the surface of sponge block 76 is always attached with cleaning agent, which can be used to clean the nozzle position of spray module 67.

[0070] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0071] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An environmentally friendly coating production process for automobile interior parts, characterized in that: The steps include: S1, weigh corresponding weight portions of water-based acrylic resin, plasticizer, filler, film-forming aid, sodium silicate, glass fiber, nano-ceramic particles and deionized water for later use; S2, adding the deionized water and water-based acrylic resin in S1 into the reaction kettle, and stirring rapidly with an electric stirrer; S3, grinding the filler, sodium silicate, glass fiber and nano-ceramic particles in S1 into powder using a ball mill; S4, adding the filler, sodium silicate, glass fiber and nano-ceramic powder ground in S3 into a reaction kettle and stirring and mixing, adding a plasticizer and a film-forming aid while stirring with an electric stirrer to prepare a spray liquid; S5. Add trichloroethylene, sulfonic acid, sodium stearate and water into the water tank of the ultrasonic cleaning machine and stir evenly; S6. Place the interior parts to be sprayed into the water tank of the ultrasonic cleaning machine for ultrasonic cleaning, and finally perform hot air drying. S7, placing the interior decoration parts dried in S6 in a spraying device, and spraying a layer of the spraying liquid prepared in S4 evenly on the surface thereof using a spray gun; S8, drying the interior parts sprayed in S7.

2. The environmentally friendly coating production process for automobile interior decoration parts according to claim 1 is characterized in that: The spraying equipment described in the above step S7 includes a box body, a placing table is arranged on the inner side of the box body, an electric push rod is arranged on the inner side of the box body, slide grooves are symmetrically arranged on the inner wall of the box body, and a fixing fixture is arranged on the inner side of the box body; It also includes a transmission assembly, which is installed on the inner side of the slide slot and is used to transmit the mechanism; A spraying assembly, which is installed on the inner side of the slideway and is used for spraying paint; A cleaning component, which is installed on one side of the spraying component and is used to clean the spray nozzle to prevent clogging; A filling component is installed at the end of the cleaning component, and the filling component is used to fill the cleaning component with cleaning agent.

3. The environmentally friendly spraying equipment for automobile interior decoration parts according to claim 2 is characterized in that: The transmission assembly includes a mounting frame, which is mounted on the inner side of the slide slot. One side of the mounting frame is connected to the electric push rod. The mounting frame slides on the inner side of the slide slot. Two groups of reciprocating screw rods are symmetrically mounted on the inner side of the mounting frame. The reciprocating screw rods rotate on the inner side of the mounting frame. The right end of each group of reciprocating screw rods is connected to a bevel gear group.

4. The environmentally friendly spraying equipment for automobile interior decoration parts according to claim 3 is characterized in that: A transmission rod is connected between the ends of a bevel gear in one of the two sets of bevel gear sets, and the transmission rod rotates on the inner side of the mounting frame. An end of the reciprocating screw rod located on the lower side is connected to a telescopic rod one, and the end of the telescopic rod one is connected to a bevel gear set two. An end of a bevel gear in the bevel gear set two is connected to a driving motor, and the driving motor is installed on the inner side of the box body. The output end of the driving motor is connected to the bottom end of the placement table through a transmission shaft.

5. The environmentally friendly spraying equipment for automobile interior decoration parts according to claim 4 is characterized in that: The spraying assembly includes a slider 1, which is installed on the outside of the reciprocating screw rod 1. The end of the slider 1 is connected to a telescopic rod 2, and the end of the telescopic rod 2 is connected to a limiting seat. An arc rail is embedded on the inner side of the limiting seat, and the arc rail is symmetrically installed on the inner side of the mounting frame.

6. The environmentally friendly spraying equipment for automobile interior decoration parts according to claim 5 is characterized in that: The arc rails are symmetrically arranged in two groups, an arc rack is installed on one side of the arc rail, the arc rack is installed on the inner side of the mounting frame, the arc rack is meshed with gear one, the gear one is installed on the inner side of the limit seat, a spray module is sleeved on the connecting shaft of the gear one, the spray module is connected with a paint tank through a pipeline, the paint tank is installed on the outer side of the box, and one side of the spray module is connected to a contact block one.

7. The environmentally friendly spraying equipment for automobile interior decoration parts according to claim 6 is characterized in that: The cleaning assembly comprises transmission rollers which are symmetrically mounted on a mounting frame. Two groups of transmission rollers are provided, and cleaning blocks are equidistantly arranged on the outer sides of each group of transmission rollers.

8. The environmentally friendly spraying equipment for automobile interior decoration parts according to claim 7 is characterized in that: The end of the transmission roller is connected to gear 2, which is meshed with a rack. The rack slides on the outside of the mounting frame, and the end of the rack is connected to contact block 2. A sponge block is provided on one side of the two groups of transmission rollers, and a mounting box is connected to the bottom end of the sponge block. The mounting box is mounted on one side of the mounting frame.

9. The environmentally friendly spraying equipment for automobile interior decoration parts according to claim 8, characterized in that: The filling assembly includes a storage box, which is installed on the outside of the box body. The storage box is connected to a one-way valve through a pipeline. The end of the one-way valve is connected to a piston cylinder, and a piston is nested inside the piston cylinder. The piston slides inside the piston cylinder, and the end of the piston is connected to a connecting rod.

10. The environmentally friendly spraying equipment for automobile interior decoration parts according to claim 9, characterized in that: The end of the connecting rod is connected to a slider 2, a reciprocating screw rod 2 is nested inside the slider 2, the reciprocating screw rod 2 rotates on one side of the mounting frame, a one-way valve 2 is connected to one side of the piston cylinder, the end of the reciprocating screw rod 2 is connected to a bevel gear set 3, and the end of a bevel gear in the bevel gear set 3 is connected to the end of gear 2.

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