Device for testing cracking resistance of vacuum bag film

Abstract

The utility model relates to the technical field of testing equipment, and particularly discloses a vacuum bag film cracking resistance testing device which comprises a base, a cracking mold and a sealing adhesive piece, a placing groove is formed in the base; the cracking mold is arranged in the placing groove; the side, deviating from the groove bottom of the containing groove, of the cracking mold is provided with a cutting part. The sealing adhesive part is arranged outside the placing groove in a surrounding manner, one end of the sealing adhesive part is adhered to the base, and the other end of the sealing adhesive part is adhered to the to-be-tested film; the to-be-tested film is detachably connected to the vacuumizing device; the base can be placed in a high-temperature oven or a low-temperature oven or an autoclave. According to the utility model, the cracking resistance of the to-be-tested film can be detected in different environments, whether the to-be-tested film meets the use requirements or not can be quickly judged, and the product quality problem of the to-be-tested film in the formal use process can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of testing equipment, in particular to a vacuum bag film crack resistance testing device. Background Art

[0002] Vacuum bag film refers to vacuum auxiliary materials that are cured and formed with composite components. It is a film material that can form and maintain a vacuum state under certain environmental conditions. Its function is to form a vacuum system. With the rapid development of the wind power industry and aerospace technology, more and more cost-effective composite materials are used in the above fields. As an indispensable consumable material in the production process of composite products, the demand for vacuum auxiliary materials is gradually increasing.

[0003] The current vacuum bag film is mainly nylon multi-layer co-extruded composite film. During the use of vacuum bag film, environmental factors such as high temperature, low temperature or high pressure will have a certain impact on the cracking performance of vacuum bag film. In order to prevent the vacuum bag film from having product quality during use, it is necessary to test the cracking resistance of vacuum bag film in different environments to meet the use requirements, but there is currently no special equipment to test this performance.

[0004] Therefore, there is an urgent need for a vacuum bag film crack resistance testing device to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a vacuum bag film crack resistance testing device, which can detect the crack resistance of the vacuum bag film under different environments, and quickly judge whether the vacuum bag film meets the use requirements, so as to prevent the vacuum bag film from having product quality problems during use.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a vacuum bag film crack resistance performance testing device, the vacuum bag film crack resistance performance testing device comprising:

[0008] A base, wherein the base is provided with a placement groove;

[0009] A cracking mold, the cracking mold is arranged in the placement groove; the side of the cracking mold away from the bottom of the placement groove has a cutting portion;

[0010] A sealing adhesive is arranged outside the placement groove, and one end of the sealing adhesive is bonded to the base, and the other end of the sealing adhesive is bonded to the film to be tested; the film to be tested is detachably connected to the vacuum device; the base can be placed in a high-temperature oven or a low-temperature oven or an autoclave.

[0011] As an optional solution of the above-mentioned vacuum bag film crack resistance testing device, the above-mentioned cracking mold includes a triangular prism member, and the side of the above-mentioned triangular prism member facing away from the bottom of the above-mentioned placement groove has the above-mentioned cutting portion; the above-mentioned triangular prism members are provided with two, and the two above-mentioned triangular prism members are arranged perpendicular to each other to form a cross structure.

[0012] As an optional solution of the above-mentioned vacuum bag film crack resistance testing device, the end of the above-mentioned triangular prism member is arranged in an arc shape.

[0013] As an optional solution of the above-mentioned vacuum bag film crack resistance testing device, the above-mentioned cracking mold is arranged at the middle position of the above-mentioned placement groove.

[0014] As an optional solution of the above-mentioned vacuum bag film crack resistance testing device, the above-mentioned film to be tested is provided with a vacuum valve, and the above-mentioned vacuum valve is detachably connected to the above-mentioned vacuum pumping device.

[0015] As an optional solution of the above-mentioned vacuum bag film crack resistance testing device, the above-mentioned vacuum valve is located above the above-mentioned base and is spaced apart from the above-mentioned placement groove.

[0016] As an optional solution of the above-mentioned vacuum bag film crack resistance testing device, the above-mentioned vacuum bag film crack resistance testing device also includes a breathable felt, the above-mentioned breathable felt is attached to the above-mentioned placement groove, and the above-mentioned cracking mold is arranged on the above-mentioned breathable felt.

[0017] As an optional solution of the above-mentioned vacuum bag film crack resistance testing device, the above-mentioned placement groove is a trapezoidal groove, and the area of ​​the placement groove opening is larger than the area of ​​the placement groove bottom.

[0018] As an optional solution of the above-mentioned vacuum bag film crack resistance testing device, a handle is also provided on the side end of the above-mentioned base.

[0019] As an optional solution of the above-mentioned vacuum bag film crack resistance testing device, a roller is also provided at the lower end of the above-mentioned base.

[0020] The beneficial effects of the utility model are:

[0021] The vacuum bag film crack resistance test device includes a base, a cracking mold and a sealing adhesive. The base is provided with a placement groove, the cracking mold is arranged in the placement groove, and the sealing adhesive is arranged outside the placement groove, and one end of the sealing adhesive is bonded to the base, and the other end of the sealing adhesive is bonded to the film to be tested, so that the sealing between the film to be tested and the base can be achieved through the setting of the sealing adhesive. Among them, the cracking mold has a cutting part on the side away from the bottom of the placement groove, and the film to be tested can be detachably connected to the vacuum pumping device, so that the vacuum pumping device is used to vacuumize, so that the film to be tested can be attached to the cracking mold, and then the cutting part is used to contact the film to be tested, so as to detect the crack resistance of the film to be tested. At the same time, the base can be placed in a high-temperature oven or a low-temperature oven or an autoclave, so that the vacuum bag film crack resistance test device can detect the crack resistance of the film to be tested under different environments, and quickly judge whether the film to be tested meets the use requirements, so as to prevent the film to be tested from having product quality problems during formal use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of a vacuum bag film crack resistance testing device provided by an embodiment of the utility model;

[0023] Figure 2 A top view of a cracking mold provided in an embodiment of the utility model.

[0024] In the figure:

[0025] 1. Base; 11. Placement groove; 2. Cracking mold; 21. Cutting part; 22. Triangular prism piece; 3. Sealing adhesive piece; 4. Film to be tested; 41. Vacuum valve; 5. Breathable felt; 6. Handle; 7. Roller. DETAILED DESCRIPTION

[0026] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] The present embodiment provides a vacuum bag film crack resistance testing device, which is used to test the crack resistance of the vacuum bag film.

[0031] like Figure 1 and Figure 2 As shown, the vacuum bag film crack resistance test device comprises a base 1, a cracking mold 2 and a sealing adhesive 3. The base 1 is provided with a placement groove 11, the cracking mold 2 is arranged in the placement groove 11, and the sealing adhesive 3 is arranged outside the placement groove 11, and one end of the sealing adhesive 3 is bonded to the base 1, and the other end of the sealing adhesive 3 is bonded to the film 4 to be tested, so that the sealing adhesive 3 can achieve sealing between the film 4 to be tested and the base 1.

[0032] Among them, the cracking mold 2 has a cutting portion 21 on the side away from the bottom of the placement groove 11, and the film 4 to be tested can be detachably connected to the vacuum device, so that the vacuum device is used for vacuuming, so that the film 4 to be tested can be attached to the cracking mold 2, and then the cutting portion 21 is used to contact the film 4 to be tested, so as to test the crack resistance of the film 4 to be tested. At the same time, the base 1 can be placed in a high-temperature oven or a low-temperature oven or an autoclave, so that the vacuum bag film crack resistance test device can test the crack resistance of the film 4 to be tested under different environments, and quickly determine whether the film 4 to be tested meets the use requirements, so as to prevent the film 4 to be tested from having product quality problems during formal use.

[0033] Specifically, the cracking mold 2 includes a triangular prism 22, and the side of the triangular prism 22 away from the bottom of the placement groove 11 has a cutting portion 21, and two triangular prisms 22 are provided, and the two triangular prisms 22 are arranged perpendicular to each other to form a cross structure, so that the cutting portion 21 on the cracking mold 2 is cross-shaped, so that the film 4 to be tested is tested for cutting, and the cutting portion 21 is prevented from being concentrated at one point and causing the film 4 to be tested to be directly punctured. Among them, the end of the triangular prism 22 is arranged in an arc shape, so that the end of the triangular prism 22 can be prevented from directly puncturing the film 4 to be tested, and affecting the crack resistance test of the film 4 to be tested. At the same time, the outer surface of the cracking mold 2 is polished to prevent the burrs on the surface of the cracking mold 2 from affecting the crack resistance test of the film 4 to be tested. Optionally, the cracking mold 2 is arranged at the middle position of the placement groove 11, so that when multiple films 4 to be tested are tested, it can be avoided that the cracking mold 2 is in different positions in the placement groove 11. The impact on the test.

[0034] Furthermore, the film to be tested 4 is provided with a vacuum valve 41, which is detachably connected to the vacuum pumping device, so that by providing the vacuum valve 41, it is convenient to perform a vacuum pumping operation between the film to be tested 4 and the base 1. At the same time, the vacuum valve 41 is located above the base 1 and is spaced apart from the placement groove 11, so that the vacuum valve 41 will not affect the cutting of the film to be tested 4 by the cracking mold 2.

[0035] Furthermore, the vacuum bag film crack resistance test device also includes a breathable felt 5, which is attached to the placement groove 11, and the cracking mold 2 is arranged on the breathable felt 5, so that the vacuuming effect in the placement groove 11 can be improved by the arrangement of the breathable felt 5, and residual gas in the dead corner of the placement groove 11 can be prevented. Optionally, the placement groove 11 is a trapezoidal groove, and the area of ​​the notch of the placement groove 11 is larger than the area of ​​the bottom of the placement groove 11, so that the attachment of the breathable felt 5 and the adsorption of the film 4 to be tested can be facilitated, and the test requirements for the crack resistance of the film 4 to be tested can be met.

[0036] Furthermore, a handle 6 is provided at the side end of the base 1, and the handle 6 can facilitate the staff to hold the base 1 to place the vacuum bag film crack resistance test device in a high-temperature oven or a low-temperature oven or an autoclave. Optionally, a roller 7 is provided at the lower end of the base 1, so that the difficulty of transferring the vacuum bag film crack resistance test device can be reduced by providing the roller 7.

[0037] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A vacuum bag film crack resistance testing device, characterized in that: include: A base (1), wherein the base (1) is provided with a placement groove (11); A cracking mold (2), the cracking mold (2) being arranged in the placement groove (11); the side of the cracking mold (2) facing away from the bottom of the placement groove (11) is provided with a cutting portion (21); A sealing adhesive (3), wherein the sealing adhesive (3) is arranged outside the placement groove (11), and one end of the sealing adhesive (3) is bonded to the base (1), and the other end of the sealing adhesive (3) is bonded to the film to be tested (4); the film to be tested (4) is detachably connected to the vacuum device; the base (1) can be placed in a high-temperature oven or a low-temperature oven or an autoclave; The cracking mold (2) comprises a triangular prism member (22), wherein the side of the triangular prism member (22) facing away from the bottom of the placement groove (11) has the cutting portion (21); two triangular prism members (22) are provided, and the two triangular prism members (22) are arranged perpendicular to each other to form a cross-shaped structure.

2. The vacuum bag film crack resistance testing device according to claim 1, characterized in that: The end of the triangular prism member (22) is arranged in an arc shape.

3. The vacuum bag film crack resistance testing device according to claim 1, characterized in that: The cracking mold (2) is arranged at the middle position of the placement groove (11).

4. The vacuum bag film crack resistance testing device according to claim 1, characterized in that: The film to be tested (4) is provided with a vacuum valve (41), and the vacuum valve (41) is detachably connected to the vacuum pumping device.

5. The vacuum bag film crack resistance testing device according to claim 4, characterized in that: The vacuum valve (41) is located above the base (1) and is spaced apart from the placement groove (11).

6. The vacuum bag film crack resistance testing device according to claim 1, characterized in that: The vacuum bag film crack resistance testing device further comprises an air-permeable felt (5), the air-permeable felt (5) is attached to the placement groove (11), and the cracking mold (2) is arranged on the air-permeable felt (5).

7. The vacuum bag film crack resistance testing device according to claim 6, characterized in that: The placement groove (11) is a trapezoidal groove, and the area of ​​the groove opening of the placement groove (11) is larger than the area of ​​the groove bottom of the placement groove (11).

8. The vacuum bag film crack resistance testing device according to any one of claims 1 to 7, characterized in that: A handle (6) is also provided at the side end of the base (1).

9. The vacuum bag film crack resistance testing device according to any one of claims 1 to 7, characterized in that: A roller (7) is also provided at the lower end of the base (1).

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