CN114950903B - Electrostatic powder spraying process - Google Patents
Electrostatic powder spraying process Download PDFInfo
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- CN114950903B CN114950903B CN202210725259.7A CN202210725259A CN114950903B CN 114950903 B CN114950903 B CN 114950903B CN 202210725259 A CN202210725259 A CN 202210725259A CN 114950903 B CN114950903 B CN 114950903B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
- B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
- B05D1/06—Applying particulate materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/32—Processes for applying liquids or other fluent materials using means for protecting parts of a surface not to be coated, e.g. using stencils, resists
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/32—Processes for applying liquids or other fluent materials using means for protecting parts of a surface not to be coated, e.g. using stencils, resists
- B05D1/322—Removable films used as masks
- B05D1/325—Masking layer made of peelable film
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/263—Moulds with mould wall parts provided with fine grooves or impressions, e.g. for record discs
- B29C2045/2651—Moulds with mould wall parts provided with fine grooves or impressions, e.g. for record discs using a plurality of mould cavities
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The electrostatic powder spraying process is prepared by the following steps: firstly, mixing rubber, namely mixing medical silica gel, conductive filler and a cross-linking agent to obtain a vulcanized raw material; step two, high-temperature vulcanization, namely adding the vulcanized raw material in the step one into a high-temperature vulcanization mold to carry out vulcanization molding, and molding a hollow arc-shaped block with an open bottom surface; step three, processing a battery module support, and step four, performing powder spraying operation when the battery module support processed in the step three is hung on a powder spraying machine through a hanging frame to obtain a powder spraying piece; and fifthly, tearing off the high-temperature-resistant adhesive tape and pulling off the hollow arc-shaped plate to finish spraying. Compared with the prior art, the battery module support can not be influenced by acid and alkali and high temperature in a non-powder-spraying area when spraying powder, and meets the conductive requirement, so that the battery module support is greatly convenient to spray powder, and meanwhile, the high-temperature-resistant adhesive tape is bonded at the joint of the hollow arc block and the powder-spraying area, so that the phenomenon of powder accumulation in the non-powder-spraying area can be avoided.
Description
Technical Field
The invention relates to the field of electric automobile accessory processing, in particular to an electrostatic powder spraying process for a battery module bracket.
Background
The battery module support of the existing electric automobile is required to be subjected to electrostatic powder spraying on the whole support during processing, the battery module support is of a strip-shaped structure, the battery module support is provided with a strip-shaped flat plate part and lug parts which are arranged at two ends of the flat plate part and used for hanging rack installation, the outer diameter of each lug part is smaller than the width of each flat plate part, each lug part is bent upwards and extends, a concave arc transition part which is concave downwards is arranged between the lower end part of each lug part and each flat plate part, the flat plate part of the battery module support is a powder spraying area, and each lug part and each concave arc transition part are non-powder spraying areas. However, the spraying process cannot be reused after the high-temperature-resistant adhesive tape is torn off, so that the spraying cost is high, the whole spraying operation is more troublesome if the end part of the battery module support is required to have a conductive function, and the colloid is locally left on the surface of the battery module support after the high-temperature-resistant adhesive tape is torn off, so that the surface of the battery module support is easily damaged due to scraping by an art designer.
In view of the above, the present inventors have conducted intensive studies on the above problems, and have resulted from the present invention.
Disclosure of Invention
Therefore, the invention aims to provide an electrostatic powder spraying process to solve the problems that the spraying cost is high, the conductive requirement cannot be met, and the surface is easy to damage in the existing spraying process.
In order to achieve the above object, the solution of the present invention is: the electrostatic powder spraying process is prepared by the following steps:
firstly, mixing rubber, namely mixing 50-80 parts by weight of raw rubber, 18-25 parts by weight of white carbon black, 1-6 parts by weight of structural control agent, 15-25 parts by weight of conductive carbon black and 0.01-0.08 part by weight of platinum complex to obtain a vulcanized raw material;
step two, high-temperature vulcanization, namely adding the vulcanized raw material in the step one into a high-temperature vulcanization mold to carry out vulcanization molding, and molding a hollow arc-shaped block with an open bottom surface;
the high-temperature vulcanizing mold is provided with an upper mold plate and a lower mold plate matched with the upper mold plate, the top surface of the lower mold plate is provided with a forming bulge in an upward protruding mode, the top surface of the forming bulge is provided with a groove penetrating in the front-rear direction in a downward recessed mode, the left inner groove wall and/or the right inner groove wall of the groove are provided with concave arc cavities in an outward recessed mode, the lower cavity edge of each concave arc cavity extends to the groove bottom side edge of the groove, the groove bottoms of the grooves are stacked with forming modules, the side walls of the forming modules are provided with arc-shaped mold cores which are suspended in the concave arc cavities and matched with the radian of the concave arc cavities in a protruding mode, the bottom surface of the upper mold plate is provided with an upper forming space in an upward recessed mode, the forming bulge is matched with the upper mold plate in a dismounting mode, the upper forming bulge is provided with a forming convex core which extends into the concave arc cavities and is matched with the radian of the concave arc cavities in a protruding mode, and the arc-shaped mold cores and the concave arc cavities enclose arc-shaped mold cores are used for forming the hollow arc blocks;
step three, processing the battery module support, namely sleeving the hollow arc-shaped block formed in the step two outside a local area of a non-powder spraying area of the battery module support, and adhering a high-temperature-resistant adhesive tape between the hollow arc-shaped block and the powder spraying area of the battery module support on the part of the non-powder spraying area of the battery module support, which is positioned outside the hollow arc-shaped block, so as to obtain the processed battery module support;
step four, carrying out powder spraying operation when the battery module support processed in the step three is hung on a powder spraying machine through a hanging frame, and hanging and buckling hollow arc-shaped blocks on the processed battery module support with the hanging frame to obtain a powder spraying piece;
and fifthly, tearing off the high-temperature-resistant adhesive tape and pulling off the hollow arc-shaped plate to finish spraying.
The forming bulge is a strip-shaped square bulge extending along the front-back direction of the lower template, the top surface of the forming bulge is recessed with a through groove which extends into the lower template and runs through front and back, the through groove is the groove, the through groove is provided with two left and right opposite vertical side walls, a straight bottom wall between the two vertical side walls and an arc transition wall for arc transition of the vertical side walls and the straight bottom wall, the vertical side walls are upwardly provided with a plurality of arc stop strips, the upper end parts of the arc stop strips are flush with the top surface of the vertical side walls, the lower end parts of the arc stop strips extend to the joint of the arc transition wall and the straight bottom wall, the arc stop strips are arranged at intervals along the front and back, the forming module is a strip-shaped square module extending along the length direction of the through groove, the width of the forming module is smaller than the width of the straight bottom wall, the left and right sides of the lower end parts of the forming module are respectively provided with lower convex strips in close fit with the straight bottom wall, one surface of the lower convex strip is in close fit with the lower end surface of the arc transition wall, the lower convex strip is provided with an arc stop strip extending to the arc stop strip-shaped stop strip, and the middle part of the lower convex strip is provided with an arc stop strip-shaped arc stop strip extending to the arc stop strip along the arc stop strip, and the arc stop strip is suspended in the arc stop strip-shaped arc stop strip is suspended along the arc stop strip extending along the arc stop strip; the bottom surface of the upper template is concavely provided with a strip-shaped concave cavity extending along the front-rear direction, the strip-shaped concave cavity is the upper molding space, a second interval is formed between the top surface of the suspended curved arc and the upper cavity bottom of the strip-shaped concave cavity, the upper cavity bottom of the strip-shaped concave cavity is convexly provided with a strip-shaped convex block extending along the front-rear direction and extending into the through groove, the strip-shaped convex block is the molding convex core, the strip-shaped convex block is concavely provided with an embedded groove for embedding the molding module corresponding to the molding module, the positions of the strip-shaped convex block, which are positioned outside the left side and the right side of the embedded groove, are correspondingly overlapped on the two lower convex strips, one surface of the strip-shaped convex block, which faces the suspended curved arc, is provided with a vertical surface and a transition cambered surface which is in arc transition with the bottom surface of the strip-shaped convex block, the vertical surface and the transition cambered surface form a molding surface, a third interval is formed between the molding surface and the suspended curved arc, the second interval is communicated with the third interval and the first interval, and the second interval and the third interval form the arc-shaped cavity.
The flat bottom arm is provided with a positioning groove which penetrates through the part between the two lower convex strips along the front-back direction, and the bottom surface of the forming module is convexly provided with a positioning strip which stretches into the positioning groove.
The bottom of the embedded groove is convexly provided with a positioning column, and the top surface of the forming module is concavely provided with a positioning hole for the positioning column to be clamped in.
The two through grooves are arranged at left and right intervals, and the two forming modules are correspondingly arranged.
The structuring control agent is hydroxy silicone oil.
After the technical scheme is adopted, the hollow arc-shaped block body obtained by the research of the inventor can shield most of non-powder spraying areas at two ends of the battery module support, and the hollow arc-shaped block body has the characteristics of conductivity, high temperature resistance and acid and alkali resistance, so that the non-powder spraying areas are not influenced by acid and alkali and high temperature during powder spraying of the battery module support, the conductive requirement is met, the powder spraying operation of the battery module support is greatly facilitated, meanwhile, the high temperature resistant adhesive tape is adhered at the joint of the hollow arc-shaped block body and the powder spraying areas, the phenomenon of powder accumulation in the non-powder spraying areas can be avoided, and in addition, the molding and demoulding of the hollow arc-shaped block body are more convenient through the high temperature vulcanization mold designed by the inventor.
Drawings
FIG. 1 is a schematic diagram of the closing of a high temperature vulcanizing mold;
FIG. 2 is a schematic cross-sectional view of a mold assembly of a high temperature vulcanizing mold;
FIG. 3 is a casting cross-sectional view of a high temperature vulcanizing mold;
fig. 4 is a schematic diagram of the parting of the high temperature vulcanizing mold.
Detailed Description
In order to further explain the technical scheme of the invention, the invention is explained in detail by specific examples.
The electrostatic powder spraying process is prepared by the following steps:
mixing 50-80 parts by weight of raw rubber, 18-25 parts by weight of white carbon black, 1-6 parts by weight of a structuring control agent, 15-25 parts by weight of conductive carbon black and 0.01-0.08 part by weight of platinum complex to obtain a vulcanized raw material, wherein the raw rubber is methyl vinyl silicone rubber, the CAS number of the methyl vinyl silicone rubber is 67762-94-1, the white carbon black is silicon dioxide, the CAS number of the silicon dioxide is 7634-86-9, the structuring control agent is hydroxyl silicone oil, the CAS number of the hydroxyl silicone oil is 70131-67-8, the CAS number of the conductive carbon black is 1333-86-4, and the CAS number of the platinum complex is 68478-92-9;
step two, high-temperature vulcanization, namely adding the vulcanized raw material in the step one into a high-temperature vulcanization mold to carry out vulcanization molding, and molding a hollow arc-shaped block with an open bottom surface;
as shown in fig. 1-4, the high temperature vulcanizing mold has an upper mold plate 1 and a lower mold plate 2 for closing the mold with the upper mold plate, the mold closing mode of the upper mold plate 1 and the lower mold plate 2 is a known technology, the top surface of the lower mold plate 2 is provided with a forming protrusion 21 in an upward protruding way, the upper mold plate 1 and the lower mold plate 2 are rectangular plate bodies, the length direction of the rectangular plate bodies is left and right, the forming protrusion 21 is a strip-shaped square protruding block extending along the front and rear direction, the length of the forming protrusion 21 is smaller than the width of the lower mold plate 2 in the front and rear direction, the top surface of the forming protrusion 21 is recessed with a groove 211 penetrating along the front and rear direction, the left inner groove wall and/or the right inner groove wall of the groove are provided with a concave arc cavity outwards, the left inner groove wall and the right inner groove wall of the groove are provided with concave arc cavities, the lower cavity extends to the bottom side edge of the groove, in particular, the top surface of the forming protrusion 21 is recessed with a through groove extending into the left and right inner side wall of the lower mold plate 2, the through groove is provided with two vertical side walls opposite to the left and right side walls, the vertical side walls are in a straight arc transition wall and the arc transition wall is formed with the arc-shaped transition wall, and the arc-shaped transition wall is formed by the arc-shaped transition wall;
the bottom of the groove is overlapped with a forming module 3, the side wall of the forming module 3 is convexly provided with an arc-shaped forming core which is suspended in the concave arc cavity and matched with the radian of the concave arc cavity, the bottom surface of the upper die plate 1 is concavely provided with an upper forming space 11 for tightly matching and embedding a forming bulge 21, the forming bulge 21 is matched with the upper forming space in a dismounting way, the upper forming space is convexly provided with a forming convex core 12 which extends into the concave arc cavity and matched with the radian of the concave arc cavity, and the arc-shaped forming core, the forming convex core and the concave arc cavity are surrounded to form an arc-shaped forming cavity for forming the hollow arc-shaped block; preferably, the vertical side wall is convexly provided with a plurality of curved arc blocking strips, the upper end parts of the curved arc blocking strips are flush with the top surface of the vertical side wall (i.e. the top surface of the forming bulge 21), the lower end parts of the curved arc blocking strips extend to the joint of the arc transition wall and the flat bottom arm, each curved arc blocking strip is arranged at intervals along the front and back, namely the curved arc blocking strips are respectively provided with a vertical section and an arc section, the vertical section and the vertical side wall are integrally formed, the arc section and the arc transition wall are integrally formed, one end of the arc section is connected with the vertical section, the other end of the arc section extends to the joint of the flat bottom wall and the arc transition wall, the curved arc blocking strip at the foremost side is flush with the front side surface of the forming bulge 21, the curved arc blocking strip at the rearmost side is flush with the rear side surface of the forming bulge, and two adjacent curved arc blocking strips enclose a concave arc cavity;
the forming module 3 is a strip square module extending along the length direction of the through groove, the width of the forming module 3 is smaller than that of the flat bottom wall, the length of the forming module 3 is longer than that of the lower template 2, namely, when the forming module 3 is placed on the flat bottom wall, the front end and the rear end of the forming module 3 extend out of the lower template 2, the left side and the right side of the lower end of the forming module 3 are respectively and outwards convexly provided with a lower convex strip 31 closely matched with the flat bottom arm, the lower convex strip 31 is in a square flat plate shape, the length of the lower convex strip 31 is matched with the width of the lower template, one face of the lower convex strip 31 back to the forming module is closely matched with the lower end face of each curved baffle strip, namely, the left side face of the lower convex strip 31 back to the forming module 3 is outwards convexly provided with a suspended arc 311 extending along the radian direction of the arc transition arm and upwards extending to the vertical side wall, and the suspended arc 311 is provided with a first distance from the inner side wall of the through groove; the suspended arc 311 is a strip-shaped plate extending along the front-back direction, the length of the strip-shaped plate is shorter than the interval between two arc baffle strips, and one suspended arc 311 is arranged between every two arc baffle strips;
the bottom surface of the upper template 1 is concavely provided with a strip-shaped concave cavity extending along the front and rear direction, the strip-shaped concave cavity is the upper molding space, a second interval 200 is arranged between the top surface of the suspended curved arc 311 and the upper cavity bottom of the strip-shaped concave cavity, the upper cavity bottom of the strip-shaped concave cavity is convexly provided with a strip-shaped convex block extending along the front and rear direction and extending into the through groove, the strip-shaped convex block is the molding convex core 12, the strip-shaped convex block is concavely provided with an embedded groove 121 for embedding the molding module, the embedded groove penetrates through the front and rear sides of the strip-shaped convex block and extends to the outside of the front and rear sides of the upper template 1, namely, the upper template is correspondingly concavely provided with a communication groove communicated with the embedded groove, the bottom of the embedded groove 121 is convexly provided with a positioning column (not shown in the figure), the top surface of the molding module 3 is concavely provided with a positioning hole 30 for the positioning column to be clamped in, and the assembly and disassembly matching of the molding module 3 and the upper template is realized by utilizing the matching of the positioning column and the positioning hole;
the bar-shaped protruding blocks are correspondingly overlapped on the two lower protruding strips at the positions outside the left side and the right side of the embedded groove, namely, the bar-shaped protruding blocks are correspondingly overlapped on the two lower protruding strips 31 of the forming module 3 through the embedded groove, one surface of the bar-shaped protruding blocks facing to the suspended curved arc is provided with a vertical surface and a transitional cambered surface which is positioned below the vertical surface and is in arc transition with the bottom surface of the bar-shaped protruding blocks, the vertical surface and the transitional cambered surface form a forming surface, namely, the side surfaces of the bar-shaped protruding blocks in the left-right direction are cambered surfaces matched with the suspended curved arc 311, a third interval 300 is arranged between the forming surface and the suspended curved arc 311, the second interval is communicated with the third interval and the first interval, the second interval and the third interval form an arc forming cavity;
during molding, the vulcanizing raw material in the first step is vulcanized at high temperature in the injection molding arc-shaped molding cavity, so that a hollow arc-shaped block 400 with an open bottom surface can be obtained;
step three, processing the battery module support, namely sleeving the hollow arc-shaped block 400 formed in the step two outside the local area of the non-powder spraying area of the battery module support, namely, outside the end parts of the two ends of the battery module support, wherein a high-temperature-resistant adhesive tape between the hollow arc-shaped block and the powder spraying area of the battery module support is adhered to the part of the non-powder spraying area of the battery module support outside the hollow arc-shaped block, so as to obtain the processed battery module support; namely, a space is reserved between the edge of the hollow arc-shaped block 400 and the powder spraying area of the battery module support, the hollow arc-shaped block 400 is just at the lug part of the battery module support, and the high-temperature-resistant adhesive tape is positioned on the concave arc transition part of the battery module support;
hanging the battery module support processed in the step three on a powder spraying machine through a hanging frame, sending the battery module support into a powder spraying line for powder spraying operation, and hanging and buckling hollow arc-shaped blocks on the battery module support to be matched with the hanging frame to obtain a powder spraying piece;
and fifthly, tearing off the high-temperature-resistant adhesive tape and pulling off the hollow arc-shaped plate to finish spraying.
The high-temperature-resistant vulcanizing mold is characterized in that the lower mold plate is provided with injection molding openings communicated with the arc-shaped forming cavities at the positions of the arc-shaped forming cavities during application.
According to the electrostatic powder spraying process, the local non-powder spraying areas at the two ends of the battery module support can be mostly shielded by the hollow arc-shaped block body obtained through research of the inventor, the hollow arc-shaped block body is made to have the characteristics of conductivity, rebound resilience, high temperature resistance and acid-base resistance by a formula specially prepared by the inventor, so that the non-powder spraying area of the battery module support can not be influenced by acid-base and high temperature during powder spraying, the conductive requirement is met, the powder spraying operation of the battery module support is greatly facilitated, meanwhile, the high-temperature resistant adhesive tape is adhered at the joint of the hollow arc-shaped block body and the powder spraying area, the phenomenon that powder is accumulated in the non-powder spraying area can be avoided, the hollow arc-shaped block body can be used for spraying powder again after being removed, the hollow arc-shaped block body can be recycled, the processing cost is greatly reduced, the occupied area of the high-temperature resistant adhesive tape is extremely small, the hollow arc-shaped block body is easy to tear, the phenomenon of adhesive is difficult to occur, in addition, the high-temperature vulcanization mold designed by the inventor enables the forming and the demolding to be more convenient, the upper mold plate and the lower mold plate to be separated, finally, the forming module is positioned outside the upper mold plate and the upper mold plate to be separated from the upper mold plate, the forming module can be pulled out from the upper mold plate rapidly, the forming module can be directly and the arc-shaped block body can be directly shaped and is shaped, and the problem of the forming can not be directly shaped and shaped into a thin type, and can be realized.
In the invention, the part of the flat bottom arm between the two lower convex strips is concave and penetrates through the positioning groove 212 along the front-back direction, the bottom surface of the forming module 3 is convexly provided with the positioning strip 32 which stretches into the positioning groove, and the forming module is more firmly attached to the lower template by utilizing the matching of the positioning strip and the positioning groove, so that the deviation is not easy to occur.
In the invention, in order to protect the tightness of the arc-shaped forming cavity, the upper cavity bottom of the upper forming space of the upper template is in sealing fit with the top surface of the forming convex core 12 through the sealing ring embedded in the upper cavity bottom of the upper forming space.
In the invention, two through grooves are arranged, the two through grooves are arranged at intervals left and right, and two forming modules are correspondingly arranged, so that a plurality of hollow arc-shaped blocks can be formed at one time by the high-temperature vulcanizing mold, and the forming efficiency is higher.
The above examples and drawings are not intended to limit the form or form of the present invention, and any suitable variations or modifications thereof by those skilled in the art should be construed as not departing from the scope of the present invention.
Claims (5)
1. The electrostatic powder spraying process is characterized in that: the method comprises the following steps:
firstly, mixing rubber, namely mixing 50-80 parts by weight of raw rubber, 18-25 parts by weight of white carbon black, 1-6 parts by weight of structural control agent, 15-25 parts by weight of conductive carbon black and 0.01-0.08 part by weight of platinum complex to obtain a vulcanized raw material;
step two, high-temperature vulcanization, namely adding the vulcanized raw material in the step one into a high-temperature vulcanization mold to carry out vulcanization molding, and molding a hollow arc-shaped block with an open bottom surface;
the high-temperature vulcanizing mold is provided with an upper mold plate and a lower mold plate matched with the upper mold plate, the top surface of the lower mold plate is provided with a forming bulge in an upward protruding mode, the top surface of the forming bulge is provided with a groove penetrating in the front-rear direction in a downward recessed mode, the left inner groove wall and/or the right inner groove wall of the groove are provided with concave arc cavities in an outward recessed mode, the lower cavity edge of each concave arc cavity extends to the groove bottom side edge of the groove, the groove bottoms of the grooves are stacked with forming modules, the side walls of the forming modules are provided with arc-shaped mold cores which are suspended in the concave arc cavities and matched with the radian of the concave arc cavities in a protruding mode, the bottom surface of the upper mold plate is provided with an upper forming space in an upward recessed mode, the forming bulge is matched with the upper mold plate in a dismounting mode, the upper forming bulge is provided with a forming convex core which extends into the concave arc cavities and is matched with the radian of the concave arc cavities in a protruding mode, and the arc-shaped mold cores and the concave arc cavities enclose arc-shaped mold cores are used for forming the hollow arc blocks;
step three, processing the battery module support, namely sleeving the hollow arc-shaped block formed in the step two outside a local area of a non-powder spraying area of the battery module support, and adhering a high-temperature-resistant adhesive tape between the hollow arc-shaped block and the powder spraying area of the battery module support on the part of the non-powder spraying area of the battery module support, which is positioned outside the hollow arc-shaped block, so as to obtain the processed battery module support;
step four, carrying out powder spraying operation when the battery module support processed in the step three is hung on a powder spraying machine through a hanging frame, and hanging and buckling hollow arc-shaped blocks on the processed battery module support with the hanging frame to obtain a powder spraying piece;
fifthly, tearing off the high-temperature-resistant adhesive tape and pulling off the hollow arc-shaped plate to finish spraying;
the forming bulge is a strip-shaped square bulge extending along the front-back direction of the lower template, the top surface of the forming bulge is recessed with a through groove which extends into the lower template and runs through front and back, the through groove is the groove, the through groove is provided with two left and right opposite vertical side walls, a straight bottom wall between the two vertical side walls and an arc transition wall for arc transition of the vertical side walls and the straight bottom wall, the vertical side walls are upwardly provided with a plurality of arc stop strips, the upper end parts of the arc stop strips are flush with the top surface of the vertical side walls, the lower end parts of the arc stop strips extend to the joint of the arc transition wall and the straight bottom wall, the arc stop strips are arranged at intervals along the front and back, the forming module is a strip-shaped square module extending along the length direction of the through groove, the width of the forming module is smaller than the width of the straight bottom wall, the left and right sides of the lower end parts of the forming module are respectively provided with lower convex strips in close fit with the straight bottom wall, one surface of the lower convex strip is in close fit with the lower end surface of the arc transition wall, the lower convex strip is provided with an arc stop strip extending to the arc stop strip-shaped stop strip, and the middle part of the lower convex strip is provided with an arc stop strip-shaped arc stop strip extending to the arc stop strip along the arc stop strip, and the arc stop strip is suspended in the arc stop strip-shaped arc stop strip is suspended along the arc stop strip extending along the arc stop strip; the bottom surface of the upper template is concavely provided with a strip-shaped concave cavity extending along the front-rear direction, the strip-shaped concave cavity is the upper molding space, a second interval is formed between the top surface of the suspended curved arc and the upper cavity bottom of the strip-shaped concave cavity, the upper cavity bottom of the strip-shaped concave cavity is convexly provided with a strip-shaped convex block extending along the front-rear direction and extending into the through groove, the strip-shaped convex block is the molding convex core, the strip-shaped convex block is concavely provided with an embedded groove for embedding the molding module corresponding to the molding module, the positions of the strip-shaped convex block, which are positioned outside the left side and the right side of the embedded groove, are correspondingly overlapped on the two lower convex strips, one surface of the strip-shaped convex block, which faces the suspended curved arc, is provided with a vertical surface and a transition cambered surface which is in arc transition with the bottom surface of the strip-shaped convex block, the vertical surface and the transition cambered surface form a molding surface, a third interval is formed between the molding surface and the suspended curved arc, the second interval is communicated with the third interval and the first interval, and the second interval and the third interval form the arc-shaped cavity.
2. The electrostatic powder spray process of claim 1, wherein: the flat bottom arm is provided with a positioning groove which penetrates through the part between the two lower convex strips along the front-back direction, and the bottom surface of the forming module is convexly provided with a positioning strip which stretches into the positioning groove.
3. The electrostatic powder spray process of claim 1, wherein: the bottom of the embedded groove is convexly provided with a positioning column, and the top surface of the forming module is concavely provided with a positioning hole for the positioning column to be clamped in.
4. The electrostatic powder spray process of claim 1, wherein: the two through grooves are arranged at left and right intervals, and the two forming modules are correspondingly arranged.
5. The electrostatic powder spray process of claim 1, wherein: the structuring control agent is hydroxy silicone oil.
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| JP2004130254A (en) * | 2002-10-11 | 2004-04-30 | Tdk Corp | Masking tool, powder coating method, and card type electronic appliance |
| JP6704279B2 (en) * | 2016-03-31 | 2020-06-03 | 株式会社巴川製紙所 | Masking material |
| EP3319143A1 (en) * | 2016-11-04 | 2018-05-09 | Fredy Doll Beteiligungs-GmbH | Motor vehicle battery module, motor vehicle having an electric drive motor and a battery module and method for producing a motor vehicle battery module and a motor vehicle |
| JP6703934B2 (en) * | 2016-12-07 | 2020-06-03 | 大倉工業株式会社 | Masker tape |
| CN107744896A (en) * | 2017-09-30 | 2018-03-02 | 芜湖普威技研有限公司 | Battery bag spray PVC protective rubber hangers with shielding function |
| WO2020097042A1 (en) * | 2018-11-07 | 2020-05-14 | Orizon Aerostructures, Llc | Systems, devices, and methods for use with aerospace parts |
| CN215843705U (en) * | 2021-09-18 | 2022-02-18 | 福州三井新能源科技有限公司 | Car lithium battery box dusts with sheltering from device |
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|---|---|---|---|---|
| JP2004074744A (en) * | 2002-08-22 | 2004-03-11 | Nanjo Sobi Kogyo Kk | Method and device for molding interior material |
| JP2004111520A (en) * | 2002-09-17 | 2004-04-08 | Shinko Electric Ind Co Ltd | Method for manufacturing wiring board |
| JP2012176378A (en) * | 2011-02-28 | 2012-09-13 | Shin Etsu Polymer Co Ltd | Coating apparatus, coating method, pipe manufacturing apparatus, pipe manufacturing method, roller manufacturing apparatus, and roller |
| CN108339688A (en) * | 2018-04-12 | 2018-07-31 | 冯晓栋 | A kind of metallic conduit surface paint spraying device |
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