CN216782712U - Vacuum preforming equipment - Google Patents
Vacuum preforming equipment Download PDFInfo
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- CN216782712U CN216782712U CN202123056356.1U CN202123056356U CN216782712U CN 216782712 U CN216782712 U CN 216782712U CN 202123056356 U CN202123056356 U CN 202123056356U CN 216782712 U CN216782712 U CN 216782712U
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Abstract
The utility model belongs to the technical field of pre-molding equipment of a prepreg process, and particularly relates to vacuum pre-molding equipment.A sealed space is formed by utilizing a frame, an adsorption film, a flexible sealing strip and a platform, a vacuum system does not need to be manually constructed, the labor capacity of workers is reduced, the production efficiency is improved, and the dimensional stability and the precision of a pre-molded product are favorably ensured; in addition, the nylon net is arranged below the adsorption film, so that the nylon net can prevent prepreg from being adhered to the adsorption film, is used for replacing demolding cloth and an isolation film in the prior art, and has an excellent release effect; the net structure of the nylon net has excellent ventilation effect, and meanwhile, the nylon net can replace a ventilated felt in the prior art, so that auxiliary materials are saved, the adsorption film and the nylon net can be used for multiple times, and the manufacturing cost is reduced; and the equipment realizes the separation of the forming die and the pre-forming process, reduces the transfer frequency of the die and is beneficial to realizing batch production.
Description
Technical Field
The utility model belongs to the technical field of preforming equipment of a prepreg technology, and particularly relates to vacuum preforming equipment.
Background
At present, as shown in fig. 1, in a known prepreg preforming process, in the prior art, a release agent 202 is applied to an inner cavity of a mold tool 201, a composite material of a product 203 is laid in the inner cavity of the mold tool 201 according to the shape of the product 203, a release cloth 204, an isolation film 205 and an air felt 206 are sequentially laid to the boundary of the product 203, a vacuum bag film 207 wraps or covers the entire mold tool 201, a vacuum valve 209 is arranged on the vacuum bag film 207, the vacuum bag film 207 and the mold tool 201 are sealed by a sealing rubber strip 208, and then the vacuum valve 209 is used for vacuumizing, so that a prepreg of the product 203 is compacted under the action of atmospheric pressure to achieve the preforming purpose.
However, the prior art has several disadvantages:
(1) the auxiliary materials such as the demoulding cloth, the isolating membrane, the breathable felt and the like required by the process are complex and various in types, and part of the auxiliary materials are only used once, so that the purchase cost is high;
(2) when a worker constructs a vacuum system, all auxiliary materials need to be laid in a set order according to the size of a mold, and particularly, a sealing rubber strip is used for bonding a vacuum bag film, each gap needs to be manually pressed, and the time is long;
(3) a large amount of scrapped leftover materials are generated, and areas are required to be provided for storage, so that the processing cost and the inventory cost are high;
(4) the vacuum bag film is easy to puncture in the transferring and using processes, so that the vacuum degree in the using process is not up to the standard, the prepreg is not compacted, and the production risk is high;
(5) because the erection of a vacuum system needs a long time and cannot be used for multiple times, after multiple layers are actually laid, the vacuum pumping and compaction are concentrated for a long time, the effect is not as obvious as the compaction effect of each layer of vacuum pumping, and the dimensional stability and precision of the preformed product are poor.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the conventional prepreg preforming process, the utility model provides vacuum preforming equipment which can reduce the labor cost, the auxiliary material cost, the inventory cost and the like of the prepreg preforming process, improve the preforming compaction effect, improve the stability of the overall dimension and greatly optimize the process efficiency.
The technical problem to be solved by the utility model is realized by adopting the following technical scheme: a vacuum preforming device comprises a platform, a frame, an adsorption film, a nylon net, a flexible sealing strip and a vacuum pump, wherein the frame is provided with an inner cavity which penetrates through the frame from top to bottom, the upper part of the inner cavity is hermetically provided with the detachable adsorption film, the nylon net is arranged on the lower surface of the adsorption film, the lower end face of the frame is provided with the flexible sealing strip, and the flexible sealing strip has a good deformation characteristic;
the frame sets up in the platform top, the platform is provided with the vacuum port along its periphery, the vacuum port is located flexible sealing strip inboard and nylon wire below, the vacuum port with the vacuum pump links to each other.
The utility model has the beneficial effects that: according to the utility model, a sealed space is formed by utilizing the frame, the adsorption film, the flexible sealing strip and the platform, a vacuum system does not need to be constructed manually, the labor amount of workers is reduced, the production efficiency is improved, and the dimensional stability and precision of a preformed product are ensured;
in addition, the nylon net is arranged below the adsorption film, so that the nylon net can prevent prepreg from being adhered to the adsorption film, is used for replacing demolding cloth and an isolation film in the prior art, and has an excellent release effect; the net structure of the nylon net has excellent ventilation effect, and meanwhile, the nylon net can replace a ventilated felt in the prior art, so that auxiliary materials are saved, the adsorption film and the nylon net can be used for multiple times, and the manufacturing cost is reduced;
and the equipment realizes the separation of the forming die and the pre-forming process, reduces the transfer frequency of the die and is beneficial to realizing batch production.
The technical scheme of the utility model is as follows: the adsorption film is a silicon gel mold. Silica gel mould itself has outstanding elasticity, and the ductility is higher than the vacuum bag membrane a lot, and the quantity is little, and adsorbable area is big, can be along with the product shape, and vacuum bag membrane ductility is poor, need spend a large amount of time adjustment under the ordinary pressure just can follow the shape, has reduced preforming efficiency to the vacuum bag membrane is breakable, needs normal change, and silica gel mould durability is better a little.
The technical scheme of the utility model is as follows: the vacuum platform is characterized by further comprising a shock pad, wherein the shock pad is arranged on the upper end face of the platform and is positioned in the inner cavity, and the vacuum port is positioned on the outer side of the edge of the shock pad. The shock pad plays the effect of shock attenuation buffering for the protection platform is worn and torn when avoiding placing the mould frock.
The technical scheme of the utility model is as follows: the shock pad is an EVA pad plate. The EVA material does not have corrosive action to metal equipment, has the characteristic of shock attenuation buffering simultaneously, and the material matter is light, is rich in elasticity, can alleviate the impact to the platform when placing the mould frock, and the ageing resistance is good.
The technical scheme of the utility model is as follows: the frame is hinged with the platform through a pin shaft. The frame is hinged with the platform, so that the frame and the platform can be assembled and aligned conveniently, and the sealing effect between the frame and the platform is ensured.
The technical scheme of the utility model is as follows: the hydraulic support is characterized by further comprising a pneumatic rod, the pneumatic rod comprises a piston rod and a pressure pipe, the piston rod is arranged in the pressure pipe in a vertically movable mode, the upper end of the piston rod is hinged to the frame, and the lower end of the pressure pipe is hinged to the platform. Through setting up the pneumatic rod, when separating frame and platform, the pneumatic rod can provide the auxiliary force, and is laborsaving swift more.
The technical scheme of the utility model is as follows: the flexible sealing strip is C-shaped in axial section, and a C-shaped opening of the flexible sealing strip is arranged outwards. The cross section is the flexible sealing strip of C type, and the below forms the line with the platform and seals, and when the evacuation, C type structure can guarantee under the pressure differential effect of both sides that line contact department presses more and more tightly, realizes effectual sealed, when flexible sealing strip top and frame junction appear the gap simultaneously, under inside and outside pressure differential's effect, can make flexible sealing strip top hug closely under the frame terminal surface form new linear sealing, and sealing safety is high.
The technical scheme of the utility model is as follows: still include clamp plate and sealing washer, the clamp plate passes through bolted connection and sets up in the frame top, adsorption film, sealing washer are located between clamp plate and the frame, the adsorption film is located the sealing washer below, the nylon wire bonds on the adsorption film. The sealing washer is used for guaranteeing the sealed of adsorption film and frame interface through compression deformation, and clamp plate and frame utilize bolted connection to fix the adsorption film, make things convenient for the dismantlement of adsorption film to change.
The technical scheme of the utility model is as follows: the sealing ring is provided with more than two semicircular sealing bulges. Through setting up a plurality of sealed archs, form multichannel linear seal between clamp plate and frame, strengthened the sealed effect of silica gel mould and frame contact surface, can bear bigger pressure.
The technical scheme of the utility model is as follows: the vacuum pump further comprises a quick connector and a gas source pipe, wherein the vacuum port is provided with the quick connector, and the quick connector is connected with the vacuum pump through the gas source pipe. The vacuum port is connected with the vacuum pump through the quick connector, so that the air source pipe is convenient to disassemble and assemble, the vacuum port is conveniently and quickly separated from the vacuum pump after the preforming is finished, the vacuum condition is relieved, the silica gel mold is further separated from a product or prepreg, and the production efficiency is improved.
Compared with the prior art, the utility model has the following advantages:
(1) the equipment can realize semi-automatic mechanical pre-molding, accelerate the pre-molding speed and improve the quality stability of the product pre-molding process;
(2) the equipment simplifies the vacuum preforming process, improves the efficiency of the preforming process, and can realize the vacuumizing and pre-compaction of each layer of prepreg, so that the dimensional precision is ensured, the dimensional stability of the preforming can be ensured, and the problem of molding defects caused by overlarge dimension in the mold entering process is solved;
(3) because a vacuum system does not need to be constructed manually, the labor amount of people is saved, the fatigue degree of workers is reduced, and further the control on the product quality and the improvement on the yield are facilitated;
(4) compared with the prior art that expensive auxiliary materials such as a vacuum bag film, an air felt and the like are matched with the mold for vacuumizing, the equipment replaces the vacuum bag film with the silica gel mold and replaces the demolding cloth, the isolating film and the air felt with the nylon net, so that the auxiliary materials are saved, and the product cost is reduced;
(5) because the equipment of the utility model is the external vacuum pumping, the utilization rate of the forming die can be improved, for the pressure forming process, the tool used for vacuum pumping only needs to bear one atmosphere pressure because the tool does not need to bear the forming pressure, a metal die capable of bearing high pressure is not needed, for the non-pressure forming process, a composite material die with large thickness is not needed, and high-cost surface maintenance is not needed, so that the pre-forming tool die can be prepared by adopting a light low-cost material, and the process cost is further saved;
(6) the equipment realizes the separation of the forming die and the preforming process, reduces the transfer frequency of the die and is beneficial to realizing batch production;
(7) the equipment is vacuumized, so that a sealing system is simplified, and the air leakage risk is reduced;
(8) the equipment can adjust the size of the platform according to the size of a product, and has strong technological adaptability;
(9) the apparatus facilitates modular production of prepreg processes.
Drawings
FIG. 1 is a schematic diagram of a prior art prepreg preforming process;
FIG. 2 is a schematic structural view of a vacuum preforming device according to the present invention;
FIG. 3 is a cross-sectional view of a vacuum preforming tool according to the present invention;
FIG. 4 is a schematic diagram of the operation of the vacuum preforming tool according to the present invention;
in the figure, 1 platform, 2 frame, 21 inner cavity, 22 pin;
3, an adsorption film, 4 nylon meshes, 5 flexible sealing strips, 6 vacuum pumps and 7 shock pads;
8, a pneumatic rod, a piston rod 81 and a pressure pipe 82;
9 pressing plates, 10 sealing rings and 101 sealing bulges;
100 vacuum ports;
11 quick-connection joints and 12 air source pipes;
201 mould tool, 202 release agent and 203 product;
204 release cloth, 205 isolating film, 206 air-permeable felt, 207 vacuum bag film, 208 sealing rubber strip and 209 vacuum valve.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 2 and 3, a vacuum preforming device comprises a platform 1, a frame 2, an adsorption film 3, a nylon net 4, a flexible sealing strip 5 and a vacuum pump 6, wherein the frame 2 is provided with an inner cavity 21 which penetrates through the frame from top to bottom, the detachable adsorption film 3 is hermetically arranged above the inner cavity 21, the nylon net 4 is arranged on the lower surface of the adsorption film 3, the edge of the nylon net 4 is 50-100mm away from the inner side wall of the frame 2, and the frame 2 is bonded with a circle of flexible sealing strip 5 on the lower end surface thereof.
The frame 2 sets up in platform 1 top, platform 1 adopts steel preparation, platform 1 is provided with vacuum port 100 along its periphery, vacuum port 100 is located 5 inboards of flexible sealing strip and nylon wire 4 below, vacuum port 100 with vacuum pump 6 links to each other.
The adsorption film 3 is a silica gel mold.
The vacuum preforming equipment is further provided with a shock pad 7, the shock pad 7 is arranged on the upper end face of the platform 1, the shock pad 7 is located in the inner cavity 21, and the vacuum port 100 is located on the outer side of the edge of the shock pad 7.
The shock pad 7 is an EVA pad plate.
The frame 2 is hinged with the platform 1 through a pin 22.
The vacuum preforming device is further provided with a pneumatic rod 8, the pneumatic rod 8 comprises a piston rod 81 and a pressure pipe 82, the piston rod 81 can be movably arranged in the pressure pipe 82 up and down, the upper end of the piston rod 81 is hinged on the frame 2, and the lower end of the pressure pipe 82 is hinged on the platform 1.
The axial section of the flexible sealing strip 5 is C-shaped, and the opening of the C-shaped flexible sealing strip 5 is arranged outwards.
As shown in fig. 3, the vacuum preforming device is further provided with a pressing plate 9 and a sealing ring 10, the pressing plate 9 is arranged above the frame 2 through a bolt connection, the adsorption film 3 and the sealing ring 10 are arranged between the pressing plate 9 and the frame 2, the adsorption film 3 is arranged below the sealing ring 10, the nylon net 4 is bonded on the adsorption film 3, the sealing ring 10 is provided with two semicircular sealing bulges 101, the sealing ring 10 is used for ensuring the sealing of the contact surface between the adsorption film 3 and the frame 2 through compression deformation, and the nylon net 4 is bonded on the adsorption film 3.
The vacuum preforming device is further provided with a quick connector 11 and an air source pipe 12, the vacuum port 100 is provided with the quick connector 11, and the quick connector 11 is connected with the vacuum pump 6 through the air source pipe 12.
The working principle is as follows: as shown in fig. 4, the mold tool 201 is placed in the middle of the cushion 7, and the product 203 or prepreg is placed on the mold tool 201 and fixed properly. The frame 2 is closed, the flexible sealing strip 5 can replace a sealing rubber strip 208 in the prior art, the flexible sealing strip has the characteristics of high repeatability, long service life and good sealing performance, the flexible sealing strip contacts the upper end face of the platform 1 to form a closed space with the adsorption film 3, the vacuum pump 6 is started, air is pumped out along the nylon net 4, the adsorption film 3 is elastically attached to the surface of a product 203 or a prepreg, the adsorption film 3 is tightly attached to the mold tool 201 along with the shape under the action of atmospheric pressure, after a specified time is reached, the vacuum pump 6 is closed, the quick-connection joints 11 are pulled out, the frame 2 is supported through the air pressure rod 8, the adsorption film 3 is separated from the product 203 or the prepreg, the nylon net 4 can prevent the prepreg from being adhered to the adsorption film 3 and is used for replacing the demolding cloth 204 and the isolation film 205 in the prior art, the excellent release effect is achieved, the net-shaped structure has the excellent ventilation effect, and can replace the ventilation felt 206 in the prior structure, and auxiliary materials are saved.
Example 2
Unlike example 1, the adsorption film 3 is a vacuum bag film 207.
Claims (10)
1. A vacuum preforming device, characterized in that: the adsorption device comprises a platform (1), a frame (2), an adsorption film (3), a nylon net (4), a flexible sealing strip (5) and a vacuum pump (6), wherein the frame (2) is provided with an inner cavity (21) which penetrates through the frame from top to bottom, the detachable adsorption film (3) is arranged above the inner cavity (21) in a sealing manner, the nylon net (4) is arranged on the lower surface of the adsorption film (3), and the flexible sealing strip (5) is arranged on the lower end face of the frame (2);
frame (2) set up in platform (1) top, platform (1) is provided with vacuum port (100) along its periphery, vacuum port (100) are located flexible sealing strip (5) inboard and nylon wire (4) below, vacuum port (100) with vacuum pump (6) link to each other.
2. The vacuum preforming device according to claim 1, wherein: the adsorption film (3) is a silica gel mold.
3. A vacuum preforming device according to claim 1 or 2, wherein: still include shock pad (7), shock pad (7) set up platform (1) up end, shock pad (7) are located inner chamber (21), vacuum port (100) are located shock pad (7) edge outside.
4. The vacuum preforming device according to claim 3, wherein: the shock pad (7) is an EVA pad plate.
5. The vacuum preforming device according to claim 1, wherein: the frame (2) is hinged with the platform (1) through a pin shaft (22).
6. The vacuum preforming device according to claim 5, wherein: still include pneumatic rod (8), pneumatic rod (8) are including piston rod (81) and pressure pipe (82), the setting that piston rod (81) can move about from top to bottom is in pressure pipe (82), piston rod (81) upper end articulates on frame (2), pressure pipe (82) lower extreme articulates on platform (1).
7. The vacuum preforming device according to claim 1, wherein: the flexible sealing strip (5) shaft section is the C type, flexible sealing strip (5) C type opening sets up outwards.
8. The vacuum preforming device according to claim 1, wherein: still include clamp plate (9) and sealing washer (10), clamp plate (9) pass through bolted connection and set up in frame (2) top, adsorb membrane (3), sealing washer (10) and are located between clamp plate (9) and frame (2), adsorb membrane (3) and are located sealing washer (10) below, nylon wire (4) bond on adsorbing membrane (3).
9. The vacuum preforming device according to claim 8, wherein: the sealing ring (10) is provided with more than two semicircular sealing bulges (101).
10. The vacuum preforming device according to claim 1, wherein: the vacuum pump is characterized by further comprising a quick connector (11) and an air source pipe (12), wherein the quick connector (11) is arranged on the vacuum port (100), and the quick connector (11) is connected with the vacuum pump (6) through the air source pipe (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123056356.1U CN216782712U (en) | 2021-12-06 | 2021-12-06 | Vacuum preforming equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123056356.1U CN216782712U (en) | 2021-12-06 | 2021-12-06 | Vacuum preforming equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216782712U true CN216782712U (en) | 2022-06-21 |
Family
ID=82007256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123056356.1U Active CN216782712U (en) | 2021-12-06 | 2021-12-06 | Vacuum preforming equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216782712U (en) |
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2021
- 2021-12-06 CN CN202123056356.1U patent/CN216782712U/en active Active
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