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CN-121989479-A - Forming process of complex special-shaped section transmitting cylinder

CN121989479ACN 121989479 ACN121989479 ACN 121989479ACN-121989479-A

Abstract

The invention provides a complex special-shaped section transmitting cylinder forming process which comprises the following steps of production preparation, forming of a functional layer and an inner cylinder, filling of a guide chute and forming of an outer cylinder, integral curing pre-pipe hoop forming and post-treatment. The invention converts sharp and complex geometric shapes into smooth transitional curved surfaces through the pretreatment procedure of 'guide chute wire filling', provides a perfect substrate for subsequent structural layer laying, fundamentally eliminates overhead hidden danger, combines 'vacuum bag technology' with 'hand paste forming', and uses silicone rubber blocks for local sealing and diversion in key areas. The combination process can apply uniform compaction pressure within the whole structure range, efficiently remove interlayer bubbles and redundant resin, obtain a product with high compactness and low porosity, and greatly improve the reliability of the consistency of the mechanical properties of the product.

Inventors

  • QI JINXIANG
  • WANG XIN
  • ZHANG JIAJIA
  • FANG XU
  • ZHENG XIN

Assignees

  • 安徽应流海源复材科技有限公司

Dates

Publication Date
20260508
Application Date
20260313

Claims (10)

  1. 1. A complex special-shaped section transmitting cylinder forming process is characterized by comprising the following steps: 1. Preparation for production The preparation of the mould (8) comprises the steps of polishing the profile of the mould (8), and uniformly smearing a release agent after cleaning; cutting the fabric, namely accurately cutting the glass fiber fabric according to the layering design; the glue solution is prepared by weighing epoxy resin, curing agent, flame retardant and conductive carbon black, and adding the epoxy resin, the curing agent, the flame retardant and the conductive carbon black into a preparation tank (7) for uniform mixing; Preparing auxiliary materials, namely processing PMI foam and a glass reinforced plastic rib plate to a specified shape, and carrying out machining and hole sealing treatment on the surface of the PMI foam; 2. Functional layer and inner tube body molding Preparing a flame-retardant resin enriched layer, namely integrally brushing glue solution prepared from epoxy resin, flame retardant and conductive carbon black on the surface of a treated mould (8) through brushing equipment to ensure no missing part; Filling the guide chute with a fiber glass strand fully infiltrated by resin, manually filling the fiber glass strand into the guide chute to form a smooth transition slope, ensuring that the fiber Shu Pingzhi is fully infiltrated, and trimming the two ends to be smooth; The inner pipe body is paved, namely glass fiber fabrics are paved layer by layer according to the designed paving sequence, fiber direction and size, and each layer needs to be carefully rolled to ensure that resin is fully soaked and air bubbles are removed; vacuum bag pressing and pre-curing, namely paving demolding cloth, isolating films and airfelt on the paved inner pipe body in sequence, wherein the key operation comprises the steps of placing silicon rubber blocks at two ends of a guide chute, packaging the vacuum bag, performing pre-air tightness vacuumizing, checking the air tightness of a system, sending a die (8) into an autoclave, preserving heat at 90 ℃ for 3 hours, completing the pre-curing of the inner pipe body, performing air cooling after curing is finished, and dismantling a vacuum bag system; 3. guide chute filling and outer tube forming The surface of the filler is polished, and the glass reinforced plastic rib plate and PMI foam with increased roughness are arranged in the pre-cured inner pipe body guide chute according to the positioning requirement, and the surface of the filler is polished and trimmed after being cured at normal temperature; 4. integral curing pre-pipe hoop forming Paving a vacuum bag pressing system again, feeding the die (8) into an autoclave, executing a step curing system at 90 ℃ for 3 hours, 125 ℃ for 2 hours and 165 ℃ for 3 hours, then performing program cooling, installing a tool at a specified position of a cylinder body, and winding by using a glass fiber narrow band to form a positioning pipe hoop and a reinforcing pipe hoop; 5. Post-treatment And (5) demolding and secondary processing to obtain a final product.
  2. 2. The complex special-shaped section emission cylinder molding process according to claim 1 is characterized in that the brushing equipment is arranged on one side of the configuration tank (7), the brushing equipment comprises a base plate (1), a rotating mechanism is arranged on the base plate (1), a mold (8) is arranged on the rotating mechanism, a translation mechanism (4) is arranged on the base plate (1), and a brushing mechanism (6) is arranged on the translation mechanism (4).
  3. 3. The complicated special-shaped section transmitting cylinder molding process as claimed in claim 2, wherein the rotating mechanism comprises a fixed seat (2) fixed on the top surface of one side of the bottom plate (1), a movable seat (3) is slidably mounted on the top surface of the other side of the bottom plate (1), a hydraulic cylinder (303) is fixed on the bottom plate (1), an output shaft of the hydraulic cylinder (303) is fixed with the movable seat (3), a first rotating shaft (201) and a second rotating shaft (301) are rotatably mounted on the fixed seat (2) and the movable seat (3) respectively, a first connector (202) and a second connector (302) are fixed on the first rotating shaft (201) and the second rotating shaft (301) respectively, a first motor (203) is fixedly mounted on one side of the fixed seat (2), and the output shaft of the first motor (203) is fixed with the first rotating shaft (201).
  4. 4. The complex special-shaped section emission cylinder molding process according to claim 2, wherein the coating mechanism (6) comprises a first frame body (601), a material storage cylinder (602) is fixed on the first frame body (601), a second frame body (603) is fixed on the material storage cylinder (602), coating brushes (604) and spray heads (605) are respectively arranged on two sides of the top of the second frame body (603), the spray heads (605) are fixed with the second frame body (603), the coating brushes (604) are connected with the second frame body (603) through lifting parts, the spray heads (605) are connected with the material storage cylinder (602) through a conveying pump (607), a material receiving hopper (606) is communicated with the top of the material storage cylinder (602), and the material receiving hopper (606) is located below the coating brushes (604) and the spray heads (605).
  5. 5. The process for forming the complex special-shaped section transmitting cylinder body according to claim 4, wherein a sleeve (6062) is arranged at the bottom of the receiving hopper (606), a fixed pipe (6063) is fixedly communicated with the top of the storage cylinder (602), the sleeve (6062) is sleeved on the fixed pipe (6063) in a sliding mode, a first spring (6064) is arranged between the fixed pipe (6063) and the sleeve (6062), side plates (6061) are fixed on two sides of the receiving hopper (606), and a jacking mechanism (12) is arranged below the side plates (6061).
  6. 6. The complicated special-shaped section emission cylinder forming process according to claim 5, wherein the jacking mechanism (12) comprises a square column (1202) and a guide sleeve (1201) fixed to the first frame body (601) and the second frame body (603), the guide sleeve (1201) is in sliding sleeve connection with the square column (1202), a top seat (1203) is fixed to the top end of the square column (1202), a tray body (1204) and a bottom column (1205) are fixed to the bottom end of the square column (1202), a fourth spring (1207) is sleeved on the square column (1202), the tray body (1204) is elastically connected with the bottom end of the guide sleeve (1201) through the fourth spring (1207), a roller (1206) is rotatably mounted at the bottom end of the bottom column (1205), and the roller (1206) is abutted to a walking bar (5).
  7. 7. A complex shaped section transmitting cylinder molding process as claimed in claim 6, characterized in that the walking bar (5) is fixed on the bottom plate (1), a plurality of protrusions (501) are arranged on the walking bar (5) at equal intervals, and grooves (502) are arranged between every two adjacent protrusions (501).
  8. 8. The process for forming the complex special-shaped section transmitting cylinder body is characterized in that the configuration tank (7) comprises a tank body (701), a material injection pump (706) is fixed at the bottom of the tank body (701), a feeding hole of the material injection pump (706) is communicated with the bottom of the tank body (701), and a material injection pipe (10) is fixedly communicated with a material outlet of the material injection pump (706).
  9. 9. The complicated special-shaped section transmitting cylinder molding process of claim 4, wherein a feeding pipe (9) is fixedly communicated with the bottom of the material storage cylinder (602), a first check ring (901) is fixedly arranged in a port of the feeding pipe (9), a first sealing gasket (902) is fixedly arranged on the first check ring (901), a first sealing disc (903) is arranged on one side of the first sealing gasket (902), the first sealing disc (903) is elastically connected with a first end frame (907) through a second spring (906), the first end frame (907) is fixedly arranged in the feeding pipe (9), a blocking seat (905) is arranged on one side of the first sealing disc (903), the blocking seat (905) is fixedly arranged in the feeding pipe (9), a pressing rod (904) is fixedly arranged on one side of the first sealing disc (903), the diameter of the first sealing disc (903) is larger than the inner diameter of the first check ring (901), and the diameter of the first sealing disc (903) is smaller than the inner diameter of the feeding pipe (9).
  10. 10. The complicated special-shaped section transmitting cylinder molding process of claim 8, wherein a sealing ring (1001) is installed at the inner ring of the port of the injection pipe (10), a second check ring (1002) is fixed inside the injection pipe (10), a second sealing pad (1003) is arranged on the second check ring (1002), a second sealing disc (1004) is arranged on one side of the second sealing pad (1003), the second sealing disc (1004) is elastically connected with a second end frame (1006) through a third spring (1005), the second end frame (1006) is fixed on the inner wall of the injection pipe (10), the diameter of the second sealing disc (1004) is larger than the inner diameter of the second check ring (1002), and the diameter of the second sealing disc (1004) is smaller than the inner diameter of the injection pipe (10).

Description

Forming process of complex special-shaped section transmitting cylinder Technical Field The invention relates to the field of emission cylinder forming and processing, in particular to a complex special-shaped section emission cylinder forming process. Background The composite material transmitting cylinder, especially the non-metal directional tube, is gradually replacing the traditional metal transmitting cylinder due to the advantages of light weight, high strength, corrosion resistance and the like. At present, the cylinder is mostly manufactured by adopting glass fiber reinforced composite materials through a hand lay-up forming or winding process. However, for cylinders with complex profiled sections (e.g. with deep grooves, sharp corners, variable curvature rail structures), the prior art suffers from the following problems when shaping: 1. The fiber spreading performance is poor, namely, in areas such as guide rail grooves with abrupt cross sections and small angles, glass fiber fabrics with high rigidity are difficult to completely adhere to the surface of a die, so that the defects such as overhead, wrinkling and the like are extremely easy to generate, the areas are structural weaknesses, and the bearing capacity and the service life of products are seriously influenced; 2. The internal quality is difficult to control, the traditional manual pasting process mainly relies on manual rolling to remove bubbles, bubbles and redundant resin are difficult to thoroughly remove in a complex structure, gaps and resin enrichment areas are easy to form, and the density of the product is uneven, so that the dispersion of mechanical properties is large; 3. The integration of functions and structures is difficult, so that the functions of flame retardance, static electricity resistance, slip guiding and the like are integrated efficiently and reliably while the strength of a main structure is ensured, and the interlayer binding force is ensured, which is a current technological difficulty; 4. The production efficiency and cost are that complex structure often needs multiple forming, multiple curing or complicated subsequent processing, the production period is long, the cost is high, and the quality consistency is difficult to control. Therefore, a complex special-shaped section transmitting cylinder forming process is provided for the problems. Disclosure of Invention The invention provides a complex special-shaped section transmitting cylinder molding process for solving the technical problems of overhead fiber laying, multiple internal defects, unstable combination of functional layers and low production efficiency in the molding of a complex special-shaped section (especially a composite cylinder with a deep and narrow guide rail groove). The invention solves the technical problems by the following technical proposal: The invention provides a complex special-shaped section transmitting cylinder forming process, which comprises the following steps of: 1. Preparation for production The mould pretreatment, namely polishing the mould surface, and uniformly smearing a release agent after cleaning; cutting the fabric, namely accurately cutting the glass fiber fabric according to the layering design; Preparing glue solution, namely weighing epoxy resin, curing agent, flame retardant and conductive carbon black, and adding the epoxy resin, the curing agent, the flame retardant and the conductive carbon black into a preparation tank for uniform mixing; Preparing auxiliary materials, namely processing PMI foam and a glass reinforced plastic rib plate to a specified shape, and carrying out machining and hole sealing treatment on the surface of the PMI foam; 2. Functional layer and inner tube body molding Preparing a flame-retardant resin enriched layer, namely integrally brushing glue solution prepared from epoxy resin, flame retardant and conductive carbon black on the surface of a treated mould through brushing equipment to ensure no missing part; Filling the guide chute with a fiber glass strand fully infiltrated by resin, manually filling the fiber glass strand into the guide chute to form a smooth transition slope, ensuring that the fiber Shu Pingzhi is fully infiltrated, and trimming the two ends to be smooth; The inner pipe body is paved, namely glass fiber fabrics are paved layer by layer according to the designed paving sequence, fiber direction and size, and each layer needs to be carefully rolled to ensure that resin is fully soaked and air bubbles are removed; Vacuum bag pressing and pre-curing, namely sequentially paving demolding cloth, isolating films and airfelt on the paved inner pipe body, wherein the key operation comprises the steps of placing silicon rubber blocks at two ends of a guide chute, packaging the vacuum bag, performing pre-air tightness vacuumizing, checking the air tightness of a system, sending a mould into an autoclave, preserving heat at 90 ℃ for 3 hours, completing the pre-curing o