Vacuum resin leading-in equipment for motor home body

Abstract

The utility model discloses vacuum resin leading-in equipment for a motor home body, which comprises a mold forming a mold groove, a mold table edge is formed on the mold, a circle of sealing ring is arranged on the mold table edge, a prefabricated glass fiber felt, a flow guide net and a silica gel bag film are laid in the mold groove, and surface felt pieces are plugged at the edges of the two sides between the prefabricated glass fiber felt and the flow guide net. A rapid flow guide pipe penetrating through the silica gel bag film is arranged on the flow guide net, the rapid flow guide pipe is guided in and shunted through a sectioning block arranged in the rapid flow guide pipe, and an exhaust pipe is arranged on the inner ring of the sealing ring; the large-size mold table edge is arranged, the silica gel bag film is adopted to replace a traditional vacuum bag film, laying is more fit, operability is higher, vacuum air leakage is not prone to occurring, the forming quality is guaranteed, the surface felt can reinforce resin introduction of the edge of the prefabricated glass fiber felt, the forming quality is further guaranteed, and in addition, the production efficiency is improved. And the rapid flow guide pipe for resin introduction is subjected to structural design, so that the resin introduction efficiency is enhanced, and the overall forming efficiency is improved.

Description

Technical Field

[0001] The utility model relates to vacuum resin introduction equipment, in particular to vacuum resin introduction equipment for a recreational vehicle body. Background Art

[0002] With economic development and rising living standards, vacation-style living has gradually become a popular pursuit. Self-driving tours are rapidly gaining popularity in my country, and RV travel, with its seamless transition between driving and accommodation, offers a flexible travel experience, allowing people to experience the joy of a 24 / 7 vacation, leading to the rapid development of the RV economy.

[0003] In the RV manufacturing industry, there are a variety of body material options. The international RV industry experienced its golden age in the late 1970s and 1980s, when aluminum alloy frames were primarily used for bodywork. However, as a metal, aluminum alloy expands and contracts with heat, leading to condensation inside and outside the vehicle during large temperature swings between winter and summer, which can cause problems. Subsequently, kiln-dried and dehydrated wood gained popularity in RV manufacturing due to its uniform texture, good flexibility, and corrosion resistance. However, wood's poor thermal conductivity and weak impact resistance limited the vehicle's lifespan, ultimately leading to its demise in the affordable RV market.

[0004] With the development of composite materials, a single material can no longer meet the comprehensive requirements of RV bodies. Therefore, RV manufacturers generally use aluminum or fiberglass as the outer layer. Compared to aluminum, fiberglass offers better sound insulation, thermal insulation, and corrosion resistance, and is gaining popularity among manufacturers and the market.

[0005] Fiberglass, used as a body material for RVs, is typically produced by hand lay-up or vacuum infusion. Hand lay-up, as the name suggests, is done by the operator, requiring high skill, high resin consumption, and low production efficiency. Vacuum infusion involves laying reinforcement material on the mold, followed by a vacuum bag, and extracting the air from the mold to create a negative pressure in the mold cavity. The vacuum pressure then forces unsaturated resin into the fiber layer through pre-laid pipes, allowing the resin to infiltrate the reinforcement material and fill the entire mold cavity. After the product solidifies, the vacuum bag material is removed, and the desired product is removed from the mold. Existing vacuum infusion typically utilizes a guide cloth to assist in the infiltration of the resin, but the infiltration time is still too long, affecting infiltration efficiency. Existing vacuum infusion auxiliary layers have poor conformability, making it difficult to eliminate interlayer porosity. The composite edge of the resin and reinforcement material exhibits poor elongation, impacting both the resin infusion and molding quality. Utility Model Content

[0006] In order to solve the deficiencies of the above-mentioned technology, the utility model provides a vacuum resin introduction device for a recreational vehicle body.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is: a vacuum resin introduction device for a recreational vehicle body, comprising a mold forming a mold groove, the mold forming a mold table edge extending on the outer circle of the mold groove, a circle of sealing rings arranged on the mold table edge, and prefabricated glass fiber felt, a guide net, and a silicone bag film are stacked upward in sequence in the mold groove. Surface felt pieces are plugged at the edge positions on both sides between the prefabricated glass fiber felt and the guide net, and a quick guide tube penetrating the silicone bag film is provided on the guide net. The quick guide tube introduces diversion through the petal block arranged inside it, and an exhaust pipe is provided on the inner circle of the sealing ring.

[0008] Furthermore, the mold is implemented in a manner of forming a table top, and the mold cavity is formed in a manner of adapting to the shape of the RV body.

[0009] Furthermore, the mold table edge extends outwards and the length of the mold table edge on the left and right sides of the mold extending outwards is not less than 30 cm.

[0010] Furthermore, the prefabricated glass fiber mat matches the groove surface size of the mold groove and is implemented in a manner of avoiding the edge of the mold table.

[0011] Furthermore, the prefabricated glass fiber mat matches the size of the guide net laid directly above it, and a plurality of through holes are provided on the guide net.

[0012] Furthermore, the surface felt sheet inserted between the prefabricated fiberglass felt and the guide net is located at the left and right ends of the mold groove, the length of the surface felt sheet is adapted to the length of the prefabricated fiberglass felt, and the part of the surface felt sheet extending outside the prefabricated fiberglass felt and the guide net is laid on the edge of the mold table.

[0013] Furthermore, the surface density of the felt is 3 g / m 2 .

[0014] Furthermore, the silicone bag film covers the entire enclosed part of the sealing ring. The silicone bag film is also implemented in a manner of fully covering the prefabricated fiberglass felt, surface felt, and guide net. The silicone bag film is penetrated by a quick exhaust plug connected to the exhaust pipe. The quick exhaust plug is located on the edge of the mold table and is connected to an external vacuum pump.

[0015] Furthermore, the quick guide tube is arranged at 1 / 2 of the width direction of the mold cavity and the portion thereof abutting against the guide net is adapted to the length of the guide net.

[0016] Furthermore, the quick diversion pipe includes an external main pipe connected to the external resin barrel through a hose. The flow path below the external main pipe is a through cavity. The left and right sides of the through cavity are respectively connected to a number of first diversion branch pipes and second diversion branch pipes. A supporting foot is also formed at the bottom of the quick diversion pipe.

[0017] A vacuum resin introduction equipment for RV bodies is used for vacuum introduction of RV bodies made of fiberglass. Compared with traditional vacuum resin introduction process equipment, it has a large-sized mold table edge to prevent overflow, and uses silicone bag film to replace traditional vacuum bag film, which is laid more smoothly, easier to operate, and less likely to leak vacuum. The structural setting based on the mold table edge can facilitate the adhesion of the silicone bag film, further enhance operability, prevent vacuum leakage, and facilitate the demolding of the silicone bag film to ensure molding quality. A surface felt sheet is ingeniously set between the prefabricated fiberglass felt and the guide net to strengthen the resin introduction at the edge of the prefabricated fiberglass felt, further ensuring molding quality. In addition, the rapid guide tube for resin introduction is structurally designed to enhance resin introduction efficiency and improve overall molding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structural stacking of the present invention.

[0019] Figure 2 It is a cross-sectional schematic diagram of the rapid flow guide tube of the present utility model.

[0020] Figure 3 This is a mold display diagram of Example 2 of the present utility model.

[0021] In the figure: 1. Mold; 2. Mold groove; 3. Mold table edge; 4. Sealing ring; 5. Prefabricated fiberglass felt; 6. Quick-connect exhaust connector; 7. Exhaust pipe; 8. Surface felt; 9. Guide net; 10. Quick guide pipe; 11. Silicone bag film; 12. External main pipe; 13. Through cavity; 14. Petal block; 15. First guide branch pipe; 16. Second guide branch pipe; 17. Support foot; 18. Cone nail. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0023] Example 1

[0024] like Figure 1-2As shown together, this embodiment is about a vacuum resin introduction device for a recreational vehicle body. Based on the principle of the vacuum resin introduction process, the resin is introduced into the preformed reinforcement material with the help of vacuum drive. Specifically, it includes a mold 1 forming a mold groove 2. The mold 1 is formed with a mold table edge 3 extending on the outer circle of the mold groove 2. A circle of sealing ring 4 is arranged on the mold table edge 3. Prefabricated glass fiber felt 5, a guide net 9, and a silicone bag film 11 are stacked upward in sequence in the mold groove 2. It should be noted that the prefabricated glass fiber felt 5 is the reinforcement material of this embodiment. This is selected based on the recreational vehicle body actually served by this embodiment at this stage. This embodiment does not limit the selection of reinforcement material. Compared with traditional vacuum resin introduction equipment, this embodiment replaces the vacuum bag film with a silicone bag film 11. Surface felt sheets 8 are inserted at the edge positions on both sides between the prefabricated glass fiber felt 5 and the guide net 9. A quick guide tube 10 that penetrates the silicone bag film 11 is provided on the guide net 9. The quick guide tube 10 introduces and diverts the flow through the petal block 14 provided therein. An exhaust pipe 7 is provided on the inner circle of the sealing ring 4.

[0025] Preferably, the mold 1 is implemented in a manner of forming a table top. Forming a table top means that the mold 1 has a certain thickness, which is convenient for the fastening of the clamp and processing by workers. The mold groove 2 is formed in a manner of adapting to the shape of the RV body. The shapes of the RV body parts are different. This embodiment shows only one of them, which is specially explained.

[0026] The mold table edge 3 extends outward, and the length of the mold table edge 3 on the left and right sides of the mold 1 that extends outward is not less than 30 cm. In this embodiment, the mold table edge 3 is provided to prevent excessive resin from overflowing, thereby preventing the operator from being stuck by the resin when on one side of the mold 1, thereby protecting personal safety and molding quality. In addition, the provision of the mold table edge 3 facilitates the provision of the sealing ring 4. The sealing ring 4 is used to prevent the overflow of the resin on the one hand, and to facilitate the operator to stick the sealing material on the other hand. For example, the butyl tape used in actual production in this embodiment is conducive to improving the operator's sticking quality and ensuring the reliability of vacuuming.

[0027] The prefabricated glass fiber mat 5 matches the groove surface size of the mold groove 2 and is implemented in a manner of avoiding the mold table edge 3. During production, the prefabricated glass fiber mat 5 is cut to a size corresponding to the size of the mold groove 2.

[0028] The prefabricated fiberglass mat 5 matches the size of the guide net 9 laid directly above it. The guide net 9 has several through holes. The guide net 9 is an existing technology and can be purchased in customized sizes. The guide net 9 is commonly made of polyethylene plastic extrusion.

[0029] In order to solve the problem of poor ductility of the traditional composite of resin and reinforcing material edge, this embodiment inserts a surface felt sheet 8 between the prefabricated glass fiber mat 5 and the guide net 9, such as Figure 1As shown, the plugged surface felt 8 is located at the left and right ends of the mold groove 2. It is needless to say that the surface felt 8 is two separate pieces. The length of the surface felt 8 is adapted to the length of the prefabricated glass fiber felt 5, thereby achieving full coverage of the edge of the prefabricated glass fiber felt 5. The portion of the surface felt 8 extending outside the prefabricated glass fiber felt 5 and the guide net 9 is laid on the mold table edge 3, and for the stability of the surface felt 8, the portion of the surface felt 8 extending outside the prefabricated glass fiber felt 5 and the guide net 9 does not exceed the sealing ring 4; in the traditional solution, the introduced resin often fails to penetrate to the edge position of the prefabricated glass fiber felt 5, because the original design of the surface felt 8 in this embodiment further strengthens the introduction of resin to the edge position of the prefabricated glass fiber felt 5.

[0030] Preferably, the surface density of the surface felt 8 is 3g / m 2 .

[0031] The silicone bag film 11 covers the entire enclosed portion of the sealing ring 4, so the silicone bag film 11 is bonded by the butyl tape on the sealing ring 4. The advantage of using the silicone bag film 11 instead of the traditional vacuum bag film in this embodiment is that the silicone bag film 11 is more conformable, so combined with the setting of the sealing ring 4, the conformability and convenience of the bonding are further enhanced; in addition, the silicone bag film 11 is also implemented in a manner of fully covering the prefabricated glass fiber felt 5, the surface felt sheet 8, and the guide net 9. The silicone bag film 11 is penetrated by the quick exhaust plug 6 connected to the exhaust pipe 7, and the quick exhaust plug 6 It is located on the edge 3 of the mold table and connected to an external vacuum pump. Therefore, when the vacuum is evacuated in this embodiment, the silicone bag film 11 can play a good leak-proof role. It should be noted that the silicone bag film 11 is easier to be penetrated by the quick exhaust plug 6 and the quick guide tube 10 than the traditional vacuum bag film, and due to the microporous structure of the silicone and the tension on the surface of the penetrating part, it is not easy to leak. It should also be noted that the vacuum pump is not shown in the drawings of this embodiment. The vacuum pump can be purchased according to actual needs. This embodiment does not make any improvements to the vacuum pump.

[0032] The quick guide tube 10 is set at 1 / 2 of the width direction of the mold groove 2 and the part where it abuts against the guide net 9 is adapted to the length of the guide net 9. Setting the quick guide tube 10 at 1 / 2 of the width direction of the mold groove 2 is conducive to balancing the introduction speed of resin on both sides and improving molding efficiency.

[0033] The quick guide pipe 10 includes an external main pipe 12 connected to the external resin barrel through a hose. It should be noted that this embodiment does not limit the specific production ratio of the resin in the resin barrel, but the ratio of resin to curing agent actually used in this embodiment is 10:3. The flow path below the external main pipe 12 is a through cavity 13. The left and right sides of the through cavity 13 are respectively connected to a plurality of first guide branch pipes 15 and second guide branch pipes 16. A support foot 17 is also formed at the bottom of the quick guide pipe 10.

[0034] Based on the above structure, the petal block 14 of this embodiment is arranged in the through cavity 13 and its diameter gradually narrows from bottom to top. Therefore, when the resin falling in the external main pipe 12 under the action of gravity is diverted to the first guide branch pipe 15 and the second guide branch pipe 16 on both sides through the petal block 14, it should be noted that the fast guide pipe 10 includes a plurality of external main pipes 12, and the distance between each external main pipe 12 is not less than 50 cm. Each external main pipe 12 corresponds to a group of petal blocks 14, the first guide branch pipe 15, and the second guide branch pipe 16, which is conducive to the diversion and introduction of resin and accelerates the introduction and molding efficiency.

[0035] Example 2

[0036] In the actual production process, the structural blocks of the RV body are of different sizes. For example, the size of the connecting plate between the side body and the roof of the RV is smaller than that of other parts. The smaller the size, the easier it is to waste resin. And precisely because the amount of resin waste increases, it is inconvenient to demold the vacuum bag after molding.

[0037] Therefore, compared with Example 1, this embodiment is designed more specifically for the connection between the side body and the roof of the RV. Figure 3 As shown, unlike Example 1, this embodiment has an upwardly protruding cone pin 18 formed on the edge 3 of the mold table, and the bottom of the mold groove 2 is deeper. That is to say, this embodiment provides a sealing ring 4 on the basis of the cone pin, so the connection position between the sealing ring 4 and the cone pin 18 forms a demoulding position that is convenient for human hands to reach deep into.

[0038] On this basis, the number of the cone nails 18 is several, specifically as follows Figure 3 As shown, the cone nails 18 are set at the front end and both sides of the mold 1. Therefore, after the molding is introduced, unlike Example 1, the operator lifts the butyl tape at the cone nails to demold it together with the silicone bag film 11, and then separates the butyl tape from the silicone bag film 11.

[0039] It can be understood that since the present embodiment introduces resin into the connecting plate of the RV side body and the roof, the shape of the mold 1 of the present embodiment is different from the shape of the mold 1 of Example 1, and thus the shape of the mold groove 2 of the present embodiment is also different from that of Example 1. Those skilled in the art can open the mold according to the actual shape of the RV body, which is not original to the present application.

[0040] The present application discloses a vacuum resin introduction device for a recreational vehicle body, which is used for vacuum introduction of recreational vehicle bodies made of fiberglass. Compared with traditional vacuum resin introduction process equipment, a large-sized mold table edge is set up to prevent overflow, and a silicone bag film is used to replace the traditional vacuum bag film, which is laid more smoothly, is easier to operate, and is less likely to leak vacuum air. The structural setting based on the mold table edge can facilitate the adhesion of the silicone bag film, further enhance operability, prevent vacuum leakage, and facilitate the demolding of the silicone bag film to ensure molding quality. A surface felt sheet is ingeniously set between the prefabricated fiberglass felt and the guide net to strengthen the resin introduction at the edge of the prefabricated fiberglass felt, further ensuring molding quality. In addition, the rapid guide tube for resin introduction is structurally designed to enhance the resin introduction efficiency and improve the overall molding efficiency.

[0041] The above-mentioned implementation manner is not a limitation of the present invention, and the present invention is not limited to the above-mentioned examples. Any changes, modifications, additions or substitutions made by technicians in this technical field within the scope of the technical solution of the present invention also fall within the scope of protection of the present invention.

Claims

1. A vacuum resin introduction device for a recreational vehicle body, characterized by: The invention comprises a mold (1) for forming a mold groove (2), wherein the mold (1) is formed with a mold table edge (3) extending from the outer circle of the mold groove (2), a circle of sealing ring (4) is arranged on the mold table edge (3), and a prefabricated glass fiber felt (5), a guide net (9), and a silicone bag film (11) are stacked and laid in sequence in the mold groove (2), and surface felt sheets (8) are plugged at the edge positions on both sides between the prefabricated glass fiber felt (5) and the guide net (9), and a quick guide pipe (10) penetrating the silicone bag film (11) is arranged on the guide net (9), and the quick guide pipe (10) is introduced into the diversion through the petal block (14) arranged inside the quick guide pipe (10), and an exhaust pipe (7) is arranged on the inner circle of the sealing ring (4).

2. The vacuum resin introduction equipment for a recreational vehicle body according to claim 1, characterized in that: The mold (1) is implemented in a manner of forming a table top, and the mold groove (2) is formed in a manner of adapting to the shape of the RV body.

3. The vacuum resin introduction equipment for a recreational vehicle body according to claim 1, characterized in that: The mold table edge (3) extends outwards, and the length of the mold table edges (3) on the left and right sides of the mold (1) extending outwards is not less than 30 cm.

4. The vacuum resin introduction equipment for a recreational vehicle body according to claim 1, characterized in that: The prefabricated glass fiber felt (5) matches the groove surface size of the mold groove (2) and is implemented in a manner of avoiding the mold table edge (3).

5. The vacuum resin introduction equipment for a recreational vehicle body according to claim 4, characterized in that: The prefabricated glass fiber mat (5) matches the size of the guide net (9) laid directly above it, and the guide net (9) is provided with a plurality of through holes.

6. The vacuum resin introduction equipment for a recreational vehicle body according to claim 5, characterized in that: The surface felt sheet (8) inserted between the prefabricated glass fiber felt (5) and the guide net (9) is located at the left and right ends of the mold groove (2); the length of the surface felt sheet (8) is adapted to the length of the prefabricated glass fiber felt (5); and the portion of the surface felt sheet (8) extending outside the prefabricated glass fiber felt (5) and the guide net (9) is laid on the mold table edge (3).

7. The vacuum resin introduction equipment for a recreational vehicle body according to claim 6, characterized in that: The surface density of the surface felt (8) is 3g / m 2 .

8. The vacuum resin introduction equipment for a recreational vehicle body according to claim 1, characterized in that: The silicone bag film (11) covers the entire enclosed portion of the sealing ring (4). The silicone bag film (11) is also implemented in a manner of fully covering the prefabricated glass fiber felt (5), the surface felt sheet (8), and the guide net (9). The silicone bag film (11) is penetrated by a quick exhaust plug (6) connected to the exhaust pipe (7). The quick exhaust plug (6) is located on the edge of the mold table (3) and is connected to an external vacuum pump.

9. The vacuum resin introduction equipment for a recreational vehicle body according to claim 1, characterized in that: The quick guide tube (10) is arranged at 1 / 2 of the width direction of the die groove (2), and the portion thereof abutting against the guide net (9) is adapted to the length of the guide net (9).

10. The vacuum resin introduction equipment for a recreational vehicle body according to claim 9, characterized in that: The quick flow guide pipe (10) includes an external main pipe (12) connected to an external resin barrel via a hose. The flow path below the external main pipe (12) is a through cavity (13). The left and right sides of the through cavity (13) are respectively connected to a plurality of first flow guide branch pipes (15) and second flow guide branch pipes (16). The bottom of the quick flow guide pipe (10) is also formed with a supporting foot (17).

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