CN215242964U - Vacuum bonding solidification forming device - Google Patents
Vacuum bonding solidification forming device Download PDFInfo
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- CN215242964U CN215242964U CN202120763217.3U CN202120763217U CN215242964U CN 215242964 U CN215242964 U CN 215242964U CN 202120763217 U CN202120763217 U CN 202120763217U CN 215242964 U CN215242964 U CN 215242964U
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Abstract
The utility model discloses a vacuum bonding solidification forming device, including vacuum bag, prefab, vacuum pump, drawing of patterns cloth and airfelt, in sealed vacuum bag was arranged in to the prefab, the vacuum pump was connected with the vacuum bag, and drawing of patterns cloth covers on prefab upper portion, and prefab and drawing of patterns cloth are whole to be arranged in sealed vacuum bag, and airfelt covers on drawing of patterns cloth, and prefab, drawing of patterns cloth and airfelt are whole to be arranged in sealed vacuum bag, the prefab includes the substrate, and the coating is at the gluing agent on substrate surface and cover thin film material or the sheet on gluing agent, obtains the goods after the gluing agent solidification shaping in the prefab. The method effectively avoids the phenomena of warping or hollowing of individual parts when a film material or a plate is adhered to the surface of a non-planar structural workpiece, and improves the yield of products; the curing time is shortened, the process flow is simplified, the overall bonding performance of the material is improved, and the bonding and curing cost is greatly reduced.
Description
Technical Field
The utility model relates to a goods processing technology field, concretely relates to goods vacuum bonding solidification forming device.
Background
The product refers to a workpiece which combines different materials together through an adhesive, in the preparation process of the product, a layer of adhesive is uniformly coated on the upper surface of a substrate, then a film material or a sheet material is covered on the adhesive, and finally a uniform pressure is applied, so that the preparation of the workpiece is completed after the adhesive is cured and molded. Because the bonding material or the workpiece has bending deflection, the edge is tilted or the individual part is hollow in the bonding process, especially for the surface with uneven surface such as bending, arc and the like, the gluing amount of different parts is different due to uneven stress of each point, and further the whole bonding performance of the material is greatly influenced. The traditional bonding forming method comprises two types, one type is prefabricated part forming, a specific cavity is prepared in advance according to the shape of a workpiece to be bonded, and constant stress is applied to the cavity to achieve the purpose of curing forming; the other mode is die-casting molding, and the workpiece is pressed in a die to meet the bonding requirement. The methods all need to prepare different prefabricated parts or dies for workpieces in different shapes, have complex operation process and higher cost, are difficult to ensure the uniformity and consistency of applied stress, and finally influence the overall processing performance of the material. In addition, the coated adhesive is too little and is not firmly adhered, the coated adhesive is too much, and the excessive adhesive can pollute the surface of the film material or the sheet material. For this reason, this application has proposed a kind of vacuum bonding solidification forming device.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a vacuum bonding solidification forming device, edge perk or the individual position hollowing phenomenon when improving plane or non-planar structure work piece bonding film or sheet to and gluing agent ooze the problem of polluting film material or sheet surface.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model relates to a vacuum bonding solidification forming device, including vacuum bag, prefab and vacuum pump, sealed vacuum bag is arranged in to the prefab, and the vacuum pump is connected with the vacuum bag.
Further, the vacuum bonding curing molding device also comprises a release cloth, the release cloth covers the upper part of the prefabricated product, and the prefabricated product and the release cloth are integrally arranged in a sealed vacuum bag.
Further, the release cloth is a composite of polyester, nylon 6, nylon 66, polyimide or glass fiber, PTFE coated side, and covers the preform edges.
Further, the vacuum bonding curing molding device also comprises an air-permeable felt, the air-permeable felt covers the demolding cloth, and the prefabricated product, the demolding cloth and the air-permeable felt are integrally placed in a sealed vacuum bag.
Further, the breathable felt material is one of polyester or nylon breathable felt.
Specifically, the prefabricated product comprises a base material, an adhesive coated on the surface of the base material and a film material or a sheet covered on the adhesive, wherein the adhesive in the prefabricated product is cured and molded to obtain the product.
Further, the vacuum bag material is polyester, nylon or aluminum-plastic composite material.
In one implementation, the vacuum bag is a belt-shaped bag with at least one open end, the preform, the release fabric and the air felt are integrally placed in the vacuum bag at the open end, and then the open end of the vacuum bag is sealed.
As another implementation, the vacuum bag includes two plies, the preform, the release fabric, and the airfelt are integrally disposed between the two plies, one end of the vacuum tube is disposed between the two plies, and then the two plies are sealed around their peripheries.
As an implementation mode, a vacuum nozzle is arranged on the upper surface or the lower surface of the vacuum bag, the joint of the vacuum nozzle and the vacuum bag is smooth and has no folds, and the vacuum pump is connected with the vacuum nozzle.
As another implementation, a vacuum tube is inserted into the vacuum bag sealing interface, and the vacuum bag is connected to the vacuum pump through the vacuum tube.
Further, a pressure gauge and a vacuum valve are arranged on the vacuum tube.
Compared with the prior art, the utility model discloses following beneficial effect has: the vacuum bag is used for covering, and the vacuum pump is used for pumping out air in the bag, so that the film or sheet adhered to the surface of the workpiece is uniformly stressed, and the air in the prefabricated product is exhausted at the same time, the film or sheet and all parts of the base material are uniformly stressed for a long time, the phenomena of warping or hollowing of individual parts when the film or sheet is adhered to the surface of the non-planar workpiece are effectively avoided, and the finished product rate of the product is improved; the curing time is shortened, the process flow is simplified, the overall bonding performance of the material is improved, and the bonding and curing cost is greatly reduced.
Drawings
Fig. 1 is a vacuum bonding curing molding apparatus according to example 1.
Detailed Description
In order to more clearly illustrate the contents of the present invention, the following further description of the present invention is made with reference to the accompanying drawings and specific embodiments:
as shown in fig. 1, the present embodiment relates to a vacuum bonding, curing and forming apparatus, which includes a vacuum bag 1, a preform 2, and a vacuum pump, wherein the preform 2 is placed in the sealed vacuum bag 1, and the vacuum pump is connected to the vacuum bag 1.
Further, the vacuum bonding curing molding device further comprises a demolding cloth 3, the demolding cloth 3 covers the upper portion of the prefabricated product 2, and the prefabricated product 2 and the demolding cloth 3 are integrally arranged in the sealed vacuum bag 1. Furthermore, the demolding cloth 3 is made of polyester, nylon 6, nylon 66, polyimide or glass fiber on one surface and a composite material with a PTFE coating on the other surface, has good absorption performance, can absorb the adhesive overflowing from the edge of the prefabricated product in the extrusion process, and avoids the pollution of the adhesive to the prefabricated product. In order to better achieve the absorption of the adhesive, the edge of the preform 2 is covered by the release cloth 3.
Further, the vacuum bonding, curing and forming device further comprises an air-permeable felt 4, wherein the air-permeable felt 4 covers the demolding cloth 3, and the prefabricated product 2, the demolding cloth 3 and the air-permeable felt 4 are integrally placed in the sealed vacuum bag 1. The air-permeable felt 4 is made of one of polyester and nylon air-permeable felts, has excellent air permeability and conformability, ensures the uniform stress on the surface of the prefabricated product 2, and simultaneously discharges air bubbles brought in the process of coating adhesive or bonding.
Specifically, the preform 2 includes a substrate, an adhesive coated on a surface of the substrate, and a thin film material or a sheet material coated on the adhesive. And curing and forming the adhesive in the prefabricated product 2 to obtain the product. The surface of the substrate to which the film material or sheet is bonded may be a flat surface, or may be a curved surface, or even an uneven surface.
Further, the material of the vacuum bag 1 is polyester, nylon or aluminum-plastic composite material, and the shape and size of the vacuum bag are adjusted according to the size of the prefabricated product to be bonded. The nylon is mainly formed by compounding PET and PE, PVC and PE, NY and PVDC, PE and PVDC, or PP and PVDC, and the aluminum-plastic composite material is mainly formed by compounding PET, AL and PE, PET, NY, AL and PE, or PET, NY, AL and CPP.
As an implementation, the vacuum bag 1 is a belt-shaped bag with at least one open end. The preform 2, the release fabric 3 and the airfelt 4 are integrally placed in the vacuum bag 1 at the open end, and then the open end of the vacuum bag 1 is sealed.
As another way of realisation, the vacuum bag 1 comprises two sheets between which the preform 2, the release cloth 3 and the felt 4 are placed in their entirety, the vacuum tube 6 being placed at one end between the two sheets and then the two sheets are sealed peripherally.
As an implementation mode, a vacuum nozzle 5 is arranged on the upper surface or the lower surface of the vacuum bag 1, the joint of the vacuum nozzle 5 and the vacuum bag is smooth and has no wrinkles, and the vacuum pump is connected with the vacuum nozzle 5. Specifically, the vacuum nozzle 5 is connected with a vacuum pipe 6 connected with a vacuum pump through a vacuum quick connector. The vacuum quick connector comprises a male connector 7 and a female connector 8, wherein the male connector 7 is connected to the vacuum nozzle 5, and the female connector 8 is connected with the vacuum pipe 6 through a barb connector. When the male connector 7 and the female connector 8 are separated, the internal valves are automatically closed respectively, and leakage of either side is prevented.
As another way of realisation, a vacuum tube 6 is inserted at the sealing interface of the vacuum bag 1, the vacuum bag 1 being connected to a vacuum pump through the vacuum tube 6.
Furthermore, a pressure gauge and a vacuum valve are arranged on the vacuum tube 6, so that the pressure in the vacuum bag 1 can be observed conveniently, and the vacuumizing process can be controlled.
The power of the vacuum pump is between 0.1Kw and 100Kw, the air extraction rate is 1L/s to 10L/s, the vacuum degree is 0.1MPa to 1MPa, a vacuum pipe is connected to the vacuum pump interface, and a barb joint is connected to the vacuum pipe.
The specific use method of the vacuum bonding curing molding device related to the embodiment comprises the following steps:
(1) uniformly coating an adhesive on the surface of a base material, and then covering a thin film material or a sheet material on one side of the adhesive of the base material to form a prefabricated product;
(2) covering the upper surface of the prefabricated product with a release cloth, and then covering the upper surface of the release cloth with an air-permeable felt;
(3) connecting the vacuum bag with a vacuum pump through a vacuum tube, sealing the vacuum bag, vacuumizing the vacuum bag, controlling the pressure in the vacuum bag through a pressure gauge and a vacuum valve, controlling the pressure in the vacuum bag to be stabilized at more than 1MPa, and curing the adhesive after a period of time to obtain the product. In the vacuumizing process, the vacuum bag enables the demolding cloth 3 and the breathable felt 4 to be attached to the surface of the prefabricated product, the upper surface and the lower surface of the prefabricated product are coated by the vacuum bag, in the vacuum curing time period, each point of the prefabricated product is uniformly stressed for a long time, the adhesive is uniformly distributed, the edge warping phenomenon is avoided, meanwhile, gas between the base material and the thin film material or the sheet is pumped out, and the bubbling phenomenon is avoided.
Further, in order to shorten the curing time, after the vacuum degree in the vacuum bag reaches a set value in the step (3), the vacuum bag is placed in an incubator and cured at a temperature which is lower than the softening point of the film material or the sheet material.
Specifically, in the step (3), the vacuum bag 1 is sealed by using a sealing tape 9 or a hot air welding gun.
Furthermore, the sealing adhesive tape is a high-performance double-sided sealing adhesive tape which is high-temperature resistant and easy to peel, can be used at the temperature of 150 ℃, and is one or more of ethylene propylene diene monomer sealing adhesive tape, silicone rubber sealing adhesive tape, chloroprene rubber sealing adhesive tape, nitrile rubber sealing tape and polyurethane rubber sealing tape.
Example 1:
the method for vacuum bonding, curing and molding the product comprises the following steps:
(1) bonding the film material or the sheet material with a plane or non-plane structural component to obtain a prefabricated product;
(2) installing a vacuum nozzle on a vacuum bag, ensuring that no wrinkles exist near the vacuum nozzle in the installation process, sequentially covering a demolding cloth (such as a release film or a protective film is not covered on the surface) and an air felt on the surface of the prefabricated product, then placing the whole component in the vacuum bag, and sealing the vacuum bag;
(3) and connecting a male connector on the vacuum nozzle, connecting a vacuum pipe with a female connector, starting the vacuum pump to vacuumize, controlling the pressure in the vacuum bag through a pressure gauge and a vacuum valve until the vacuum degree reaches a set value, stopping vacuumizing to separate the male connector from the female connector, standing the whole component at a certain temperature for a period of time, and curing the adhesive to obtain the product.
Example 2:
the method for vacuum bonding, curing and molding the product comprises the following steps:
(1) bonding the film material or the sheet material with a plane or non-plane structural component to obtain a prefabricated product;
(2) putting the prefabricated product into a vacuum bag, completely sealing one side of the vacuum bag by using a sealing adhesive tape, inserting the vacuum tube into the other side of the vacuum bag, and sealing the other side of the vacuum bag by using the vacuum adhesive tape;
(3) and opening a vacuum pump for vacuum pumping, controlling the pressure in the vacuum bag through a pressure gauge and a vacuum valve until the vacuum degree reaches a set value, stopping vacuum pumping to separate the male joint and the female joint, and curing the adhesive after a period of time to obtain the product.
Example 3:
the method for vacuum bonding, curing and molding the product comprises the following steps:
(1) adopting adhesive to bond the film material or the sheet (the softening point is more than 70 ℃) with the plane or non-plane structural component to obtain a prefabricated product;
(2) putting the prefabricated product into a vacuum bag, welding one side of the vacuum bag by using a hot air welding gun, inserting the vacuum tube into the other side of the vacuum bag, and welding and sealing the other side of the vacuum bag by using the hot air welding gun;
(3) and opening a vacuum pump for vacuum pumping, controlling the pressure in the vacuum bag through a pressure gauge and a vacuum valve until the vacuum degree reaches a set value, such as 1MPa, stopping vacuum pumping to separate the male joint and the female joint, placing the vacuum bag at 70 ℃, and curing the adhesive within 7 hours to obtain the product.
Comparative example 1:
this comparative example is the same as example 3 except that the following method, a method for bonding, curing and molding an article, comprising the steps of:
(1) adopting adhesive to bond the film material or the sheet (the softening point is more than 70 ℃) with the plane or non-plane structural component to obtain a prefabricated product;
(2) and uniformly distributing weights on the upper surface of the prefabricated product, placing the prefabricated product at room temperature, and curing the adhesive after 24 hours to obtain the product.
Claims (9)
1. The vacuum bonding curing molding device is characterized by comprising a vacuum bag, a prefabricated product and a vacuum pump, wherein the prefabricated product is arranged in the sealed vacuum bag; the vacuum bag is a belt-shaped bag with at least one open end, the prefabricated product, the demolding cloth and the air-permeable felt are integrally arranged in the vacuum bag, the open end of the vacuum bag is sealed, the vacuum tube is inserted into a vacuum bag sealing interface, and the vacuum bag is connected with the vacuum pump through the vacuum tube.
2. The vacuum bonding curing molding device is characterized by comprising a vacuum bag, a prefabricated product and a vacuum pump, wherein the prefabricated product is arranged in the sealed vacuum bag; the vacuum bag comprises two sheet layers, the prefabricated product, the demolding cloth and the breathable felt are integrally arranged between the two sheet layers, one end of the vacuum tube is arranged between the two sheet layers, the peripheries of the two sheet layers are sealed, the vacuum tube is inserted into a vacuum bag sealing connector, and the vacuum bag is connected with the vacuum pump through the vacuum tube.
3. The vacuum bonding, curing and forming device is characterized by comprising a vacuum bag, a prefabricated product and a vacuum pump, wherein the prefabricated product is arranged in the sealed vacuum bag, and the vacuum pump is connected with the vacuum bag; the vacuum nozzle is arranged on the upper surface or the lower surface of the vacuum bag, the joint of the vacuum nozzle and the vacuum bag is smooth and has no folds, and the vacuum pump is connected with the vacuum nozzle.
4. The vacuum bonding curing molding apparatus according to any one of claims 1 to 3, further comprising a release cloth covering the upper portion of the preform, wherein the preform and the release cloth are integrally disposed in a sealed vacuum bag.
5. The vacuum bonding curing molding apparatus of claim 4, wherein the release cloth is a composite of polyester, nylon 6, nylon 66, polyimide or glass fiber, PTFE coated, and covers the preform edges.
6. The vacuum bonding curing molding apparatus of claim 5, further comprising an air felt covered on the release fabric, wherein the preform, the release fabric and the air felt are integrally disposed in a sealed vacuum bag.
7. The vacuum bonding, curing and forming apparatus as claimed in claim 6, wherein the airfelt material is one of polyester or nylon airfelt.
8. The vacuum bonding, curing and forming apparatus according to claim 7, wherein the preform comprises a substrate, an adhesive coated on the surface of the substrate, and a film material or a sheet material covering the adhesive, and the adhesive in the preform is cured and formed to obtain the product.
9. The vacuum bonding, curing and forming device as claimed in claim 8, wherein the vacuum bag is made of polyester, nylon or aluminum-plastic composite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120763217.3U CN215242964U (en) | 2021-04-14 | 2021-04-14 | Vacuum bonding solidification forming device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120763217.3U CN215242964U (en) | 2021-04-14 | 2021-04-14 | Vacuum bonding solidification forming device |
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| CN215242964U true CN215242964U (en) | 2021-12-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112659595A (en) * | 2020-12-17 | 2021-04-16 | 沈阳航天新光集团有限公司 | Device and method for removing solvent in carbon fiber polyimide composite bottle body in layered mode |
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2021
- 2021-04-14 CN CN202120763217.3U patent/CN215242964U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112659595A (en) * | 2020-12-17 | 2021-04-16 | 沈阳航天新光集团有限公司 | Device and method for removing solvent in carbon fiber polyimide composite bottle body in layered mode |
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