Pasting tool for composite material compression spline reinforcing sheet

Abstract

The utility model belongs to the technical field of composite material tools, and particularly discloses a pasting tool for composite material compression sample strip reinforcing sheets, which is used for pasting a test sample strip and comprises a lower cover plate and an upper cover plate, the test sample strip comprises four groups of glass fiber reinforced plastic reinforcing sheets and a composite material sample, the four groups of glass fiber reinforced plastic reinforcing sheets are arranged on the two sides of the composite material sample in pairs, the two groups of glass fiber reinforced plastic reinforcing sheets located on the same side of the composite material sample are arranged side by side at intervals, the glass fiber reinforced plastic reinforcing sheets are perpendicular to the composite material sample, a limiting structure is arranged on the lower cover plate, and the test sample strip is arranged in the limiting structure. The lower cover plate is provided with a detachable positioning assembly, the positioning assembly and the limiting structure form a frame structure used for limiting the test sample strip, and the upper cover plate is connected with the lower cover plate through a locking device and used for pressing and fixing the test sample strip. According to the technical scheme, the test sample strips do not need to be pasted manually, and the manufacturing qualification rate of the test sample strips is increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of pasting tooling, and particularly relates to a pasting tooling for a composite material compression spline reinforcing sheet. Background Technique

[0002] With the continuous progress of technology and the development of industry, composite materials have gradually become a preferred choice to replace traditional materials. During the testing process of composite material samples, it is necessary to paste fiberglass reinforcing sheets on the composite materials to prevent the composite materials from being damaged during the clamping process, so as to fully protect the composite material test samples and ensure the stability and reliability of test data and results. The fiberglass reinforcing sheets are often manually scribed. It is difficult to ensure the size, spacing and centering of the fiberglass reinforcing sheets, which affects the pasting quality of the fiberglass reinforcing sheets. Manual pasting is prone to the situation that the fiberglass reinforcing sheets and the composite material samples are not fully adhered, prolonging the testing process. Content of the Utility Model

[0003] The purpose of the utility model is to provide a pasting tooling for a composite material compression spline reinforcing sheet, so as to solve the problems that the manual pasting of the fiberglass reinforcing sheet and the composite material sample are not fully adhered, and the fiberglass reinforcing sheet falls off during the test force application process, resulting in a long mechanical test period.

[0004] In order to achieve the above purpose, the technical solution of the utility model is: a pasting tooling for a composite material compression spline reinforcing sheet, used for pasting test splines, including a lower cover plate and an upper cover plate. The test spline includes a fiberglass reinforcing sheet and a composite material sample. There are four groups of the fiberglass reinforcing sheets. Two groups of the four groups of fiberglass reinforcing sheets are arranged on both sides of the composite material sample respectively. The two groups of fiberglass reinforcing sheets on the same side of the composite material sample are arranged side by side and at intervals. The fiberglass reinforcing sheet is perpendicular to the composite material sample. A limiting structure is arranged on the lower cover plate, and the test spline is arranged in the limiting structure. A detachable positioning component is arranged on the lower cover plate. The positioning component and the limiting structure form a frame structure for limiting the test spline. The upper cover plate is connected to the lower cover plate through a locking device for pressing and fixing the test spline.

[0005] Furthermore, the limiting structure includes a first limiting post and a second limiting post. There are two sets of both the first limiting post and the second limiting post. The two sets of the first limiting posts are arranged at the middle position of the lower cover plate, and the two sets of the second limiting posts are arranged on one side of the lower cover plate. The connection line of the two sets of the first limiting posts is perpendicular to the connection line of the two sets of the second limiting posts, and the two sets of the first limiting posts are located between the two sets of the second limiting posts. The two sets of the first limiting posts and the two sets of the second limiting posts respectively form a first channel for placing fiberglass reinforcement sheets, and the two sets of the second limiting posts and the first limiting posts on one side form a second channel for placing composite material samples. The positioning assembly includes a first limiting block and a second limiting block. There are four sets of the first limiting blocks which are respectively arranged on both sides of the lower cover plate. The first limiting blocks located on both sides of the two sets of the first limiting posts respectively form two first frame structures with the two sets of the first limiting posts. The first frame structures are used for limiting the fiberglass reinforcement sheets. There are two sets of the second limiting blocks which are respectively arranged on one side of the lower cover plate. The two sets of the second limiting blocks and the two sets of the second limiting posts form a second frame structure. The second frame structure is used for limiting the composite material samples. The upper cover plate is provided with positioning holes matching the limiting structure, and the positioning holes are used for connecting and positioning the upper cover plate and the lower cover plate.

[0006] Furthermore, the first limiting block includes a first fixing block and a first positioning block. A first positioning block is fixed on one side of the first fixing block. The first positioning block is used for forming a first frame structure with the two sets of the first limiting posts. The height distance that the first positioning block exceeds the lower cover plate is greater than the total thickness of the two sets of fiberglass reinforcement sheets and the composite material samples. A first strip-shaped hole is provided in the first fixing block, and a first threaded hole opposite to the first strip-shaped hole is provided on the end face of the lower cover plate. A first bolt passes through the first strip-shaped hole to fix the first limiting block on the lower cover plate.

[0007] Furthermore, the second limiting block includes a second fixing block and a second positioning block. A second positioning block is fixed on one side of the second fixing block. The second positioning block is used for forming a second frame structure with the two sets of the second limiting posts. The height distance that the second positioning block exceeds the lower cover plate is greater than the thickness of one set of fiberglass reinforcement sheets and less than the total thickness of the test specimens. A second strip-shaped hole is provided in the second fixing block, and a second threaded hole opposite to the second strip-shaped hole is provided on the end face of the lower cover plate. A second bolt passes through the second strip-shaped hole to fix the second limiting block on the lower cover plate.

[0008] Furthermore, a glue cleaning groove is provided in the lower cover plate and / or the upper cover plate, and the glue cleaning groove is used for the structural glue overflowing after pressing for post-treatment.

[0009] The working principle of this technical solution is as follows:

[0010] (1) Place two groups of fiberglass reinforced sheets coated with epoxy structural adhesive, with the adhesive-coated surfaces facing upwards, in two groups of first channels and fit them onto the lower cover plate. Control the distance between the two groups of fiberglass reinforced sheets through two groups of first limit posts. Place one side of the composite material sample against two groups of second limit posts and place it in the second channel, so that the composite material sample is placed on the fiberglass reinforced sheets. Then place two groups of fiberglass reinforced sheets coated with epoxy structural adhesive on the composite material sample, and place the two groups of fiberglass reinforced sheets with the adhesive-coated surfaces facing downwards in the first channels, so that the two groups of fiberglass reinforced sheets are placed on the composite material sample.

[0011] (2) Slide the first limit block so that the first positioning block pushes the fiberglass reinforced sheets on both sides towards the first limit posts until the fiberglass reinforced sheets are fixed between the first frames formed by the two groups of first limit blocks and the two groups of first limit posts. Then pass the first bolt through the first elongated hole to fix the first limit block on the lower cover plate. Slide the second limit block so that the second positioning block pushes the composite material sample towards the second limit posts until the composite material sample is fixed between the second frames formed by the two groups of second limit blocks and the two groups of second limit posts. Then pass the second bolt through the second elongated hole to fix the second limit block on the lower cover plate to prevent the fiberglass reinforced sheets and the composite material sample from moving. Position and install the upper cover plate through the first positioning holes and the second positioning holes and the first limit posts and the second limit posts of the lower cover plate.

[0012] (3) Move the entire tooling to a rubber press for pressing to compact the fiberglass reinforced sheets and the composite material sample and extrude the excess epoxy structural adhesive. Pass the third bolt through the through hole of the upper cover plate and fix it with the third threaded hole on the lower cover plate. Then remove the pressure applied by the rubber press and remove the tooling; clean the excess epoxy structural adhesive through the glue cleaning grooves provided on the upper cover plate and / or the lower cover plate.

[0013] (4) Finally, place the whole in an oven for curing to make the fiberglass reinforced sheets and the composite material sample bond fully.

[0014] The beneficial effects of this technical solution are as follows:

[0015] ① Effectively prevent the fiberglass reinforced sheets and the composite material sample from moving during the pressing process, effectively ensure the stability of the test area size, and improve the production efficiency of the composite material sample.

[0016] ② Make the fiberglass reinforced sheets and the composite material sample fit fully, prevent the fiberglass reinforced sheets from falling off during the test under force, improve the accuracy of mechanical tests, reduce the volatility of mechanical test data, and speed up the work efficiency. Description of the Drawings

[0017] Figure 1 It is a structural schematic diagram of a pasting tooling for a composite material compression spline reinforcing sheet of the present utility model;

[0018] Figure 2 This is an exploded structural schematic diagram of a pasting tooling for a composite material compression spline reinforcement patch of the present utility model. Specific embodiments

[0019] The following is a further detailed description through specific embodiments:

[0020] The reference numerals in the accompanying drawings of the specification include: lower cover plate 1, first limit post 2, second limit post 3, test spline 4, third threaded hole 5, glue cleaning groove 6, fiberglass reinforcement patch 7, composite material sample 8, upper cover plate 9, first positioning hole 10, second positioning hole 11, through hole 12, first limit block 13, first fixing block 14, first positioning block 15, first strip-shaped hole 16, first bolt 17, second limit block 18, second fixing block 19, second positioning block 20, second bolt 21, third bolt 22.

[0021] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] The embodiment is basically as shown in the Figure 1-2 accompanying drawings: A pasting tooling for a composite material compression spline reinforcement patch, used for pasting the test spline 4, and its structure includes a lower cover plate 1 and an upper cover plate 9. The test spline 4 includes four groups of fiberglass reinforcement patches 7 and composite material samples 8. Two groups of fiberglass reinforcement patches 7 are arranged side by side with a spacing on the upper side of the composite material sample 8, and the other two groups of fiberglass reinforcement patches 7 are arranged side by side with a spacing on the lower side of the composite material sample 8. The fiberglass reinforcement patch 7 and the composite material sample 8 are arranged perpendicular to each other (the length direction of the four groups of fiberglass reinforcement patches 7 is arranged in the front-rear direction, and the length direction of the composite material sample 8 is arranged in the left-right direction).

[0023] As shown in Figure 1As shown, a limiting structure is provided on the lower cover plate 1. The limiting structure includes a first limiting post 2 and a second limiting post 3. There are two groups of both the first limiting post 2 and the second limiting post 3. The two groups of first limiting posts 2 are vertically arranged at the middle position of the lower cover plate 1, and the two groups of second limiting posts 3 are horizontally arranged at the front side of the lower cover plate 1. The connection line of the two groups of first limiting posts 2 is perpendicular to the connection line of the two groups of second limiting posts 3. The two groups of first limiting posts 2 are located between the two groups of second limiting posts 3. Two first channels for placing the fiberglass reinforcing sheets 7 are formed between the two groups of first limiting posts 2 and the two groups of second limiting posts 3 respectively. A second channel for placing the composite material sample 8 is formed between the two groups of second limiting posts 3 and the first limiting posts 2 on the other side. The heights of the first limiting post 2 and the second limiting post 3 are both greater than the total thickness of the test specimen 4. The upper side is used for positioning with the positioning holes of the upper cover plate 9. Four groups of third threaded holes 5 are provided around the lower cover plate 1 for fixing with the upper cover plate 9.

[0024] The positioning assembly includes a first limiting block 13 and a second limiting block 18. There are four groups of first limiting blocks 13 which are respectively arranged on the front and rear sides of the lower cover plate 1, and the first limiting blocks 13 are arranged on the left and right sides of the fiberglass reinforcing sheet 7. The first limiting block 13 includes a first fixing block 14 and a first positioning block 15. The first positioning block 15 is vertically fixed on the upper side of the first fixing block 14, forming an L-shaped structure. A horizontal first strip-shaped hole 16 is provided on the first fixing block 14. First threaded holes are provided on the lower cover plate 1 at positions corresponding to the first strip-shaped holes 16. In this embodiment, each group of first strip-shaped holes 16 corresponds to two first threaded holes. The width dimension of the first strip-shaped hole 16 is greater than the diameter of the threaded section of the first bolt 17 and less than the diameter of the head of the first bolt 17. The threaded section of the first bolt 17 can slide in the first strip-shaped hole 16. The height of the first positioning block 15 extending out of the lower cover plate 1 is greater than the total thickness of the two groups of fiberglass reinforcing sheets 7 and the composite material sample 8. The threaded section of the first bolt 17 passes through the first strip-shaped hole 16 and is fixed to the first threaded hole, and the first limiting block 13 is pressed between the head of the first bolt 17 and the side surface of the lower cover plate 1. The first limiting blocks 13 on both sides drive the first positioning block 15 to move towards the center of the lower cover plate 1, and the first positioning block 15 drives the fiberglass reinforcing sheets 7 on both sides towards the first limiting post 2, and the fiberglass reinforcing sheets 7 are positioned between the first frame formed by the two groups of first limiting blocks 13 and the two groups of first limiting posts 2.

[0025] There are two sets of second limit blocks 18, which are respectively arranged on the left and right sides of the lower cover plate 1. The second limit block 18 includes a second fixed block 19 and a second positioning block 20. The second positioning block 20 is horizontally fixed on the upper side of the second fixed block 19, forming an inverted L-shaped structure. A horizontal second elongated hole is provided on the second fixed block 19, and a second threaded hole is provided at the position of the lower cover plate 1 opposite to the second elongated hole. In this embodiment, each set of second elongated holes corresponds to two second threaded holes. The width dimension of the second elongated hole is larger than the diameter of the threaded section of the second bolt 21 and smaller than the diameter of the head of the second bolt 21. The threaded section of the second bolt 21 can slide in the second elongated hole. The height distance by which the second positioning block 20 exceeds the lower cover plate 1 is larger than the thickness of a set of fiberglass reinforcement sheets 7 and smaller than the total thickness of two sets of fiberglass reinforcement sheets 7 and the composite material sample 8. The threaded section of the second bolt 21 passes through the second elongated hole and is fixed to the second threaded hole, so that the second limit block 18 is pressed between the head of the second bolt 21 and the side surface of the lower cover plate 1. The second limit blocks 18 on both sides drive the second positioning block 20 to move towards the second limit post 3, and the composite material sample 8 is positioned between the second limit block 18 and the second frame formed by two sets of second limit posts 3.

[0026] The upper cover plate 9 is provided with positioning holes matching the first limit post 2 and the second limit post 3. The positioning holes include a first positioning hole 10 and a second positioning hole 11. A glue cleaning groove 6 is provided on the lower cover plate 1 and / or the upper cover plate 9. In this embodiment, both the lower cover plate 1 and the upper cover plate 9 are provided with glue cleaning grooves 6. Specifically, the glue cleaning groove 6 of the lower cover plate 1 is provided between two sets of first limit posts 2, and the glue cleaning groove 6 of the upper cover plate 9 is provided between two sets of first positioning holes 10. The glue cleaning grooves 6 of the lower cover plate 1 and the upper cover plate 9 are arranged opposite to each other. The upper cover plate 9 is provided with through holes 12 corresponding to and opposite to the third threaded holes 5 one by one. When the upper cover plate 9 is pressed against the lower cover plate 1, the first limit post 2 and the second limit post 3 slide in the first positioning hole 10 and the second positioning hole 11 of the upper cover plate 9 one by one and are positioned. The press machine presses the upper cover plate 9 and the lower cover plate 1 to compact the fiberglass reinforcement sheets 7 and the composite material sample 8, extrude the excess epoxy structural adhesive, and then fix the upper cover plate 9 and the lower cover plate 1 through a locking device. In this embodiment, the locking device uses a third bolt 22. The third bolt 22 passes through the through hole 12 and is locked with the third threaded hole 5 to fix the upper cover plate 9 and the lower cover plate 1.

[0027] The specific implementation process is as follows:

[0028] (1) Place two groups of fiberglass reinforced sheets 7 coated with epoxy structural adhesive, with the adhesive-coated surfaces facing up, in two groups of first channels and attach them to the lower cover plate 1. Control the distance between the two groups of fiberglass reinforced sheets 7 through two groups of first limit posts 2. Place one side of the composite material sample 8 against two groups of second limit posts 3 and place it in the second channel, so that the composite material sample 8 is placed on the fiberglass reinforced sheets 7. Then place two groups of fiberglass reinforced sheets 7 coated with epoxy structural adhesive on the composite material sample 8, and place the two groups of fiberglass reinforced sheets 7 with the adhesive-coated surfaces facing down in the first channels, so that the two groups of fiberglass reinforced sheets 7 are placed on the composite material sample 8.

[0029] (2) Slide the first limit block 13 so that the first positioning block 15 pushes the fiberglass reinforced sheets 7 on both sides towards the first limit posts 2 until the fiberglass reinforced sheets 7 are fixed between the first frames formed by the two groups of first limit blocks 13 and the two groups of first limit posts 2. Then pass the first bolt 17 through the first strip-shaped hole 16 to fix the first limit block 13 on the lower cover plate 1. Slide the second limit block 18 so that the second positioning block 20 pushes the composite material sample 8 towards the second limit posts 3 until the composite material sample 8 is fixed between the second frames formed by the two groups of second limit blocks 18 and the two groups of second limit posts 3. Then pass the second bolt 21 through the second strip-shaped hole to fix the second limit block 18 on the lower cover plate 1 to prevent the fiberglass reinforced sheets 7 and the composite material sample 8 from moving. Position and install the upper cover plate 9 through the first positioning hole 10 and the second positioning hole 11 and the first limit posts 2 and the second limit posts 3 of the lower cover plate 1.

[0030] (3) Move the entire tooling to a rubber pressing machine for pressing to compact the fiberglass reinforced sheets 7 and the composite material sample 8 and extrude the excess epoxy structural adhesive. Pass the third bolt 22 through the through hole 12 of the upper cover plate 9 and fix it to the third threaded hole 5 on the lower cover plate 1. Then remove the pressure applied by the rubber pressing machine and take off the tooling; clean the excess epoxy structural adhesive through the glue cleaning groove 6 provided on the upper cover plate 9 and / or the lower cover plate 1.

[0031] (4) Finally, place the whole in an oven for curing to fully bond the fiberglass reinforced sheets 7 and the composite material sample 8.

[0032] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0033] The above are only embodiments of the present utility model. Specific structures and common knowledge such as characteristics that are well-known in the art are not described in detail herein. Those of ordinary skill in the art know all the common general technical knowledge in the technical field to which the utility model belongs before the filing date or the priority date, can know all the prior arts in this field, and have the ability to apply the conventional experimental means before this date. Those of ordinary skill in the art can, under the inspiration given by this application, combine their own abilities to improve and implement this solution. Some typical well-known structures or well-known methods should not become obstacles for those of ordinary skill in the art to implement this application. It should be noted that for those skilled in the art, without departing from the structure of the present utility model, several deformations and improvements can still be made, and these should also be regarded as the protection scope of the present utility model, and these will not affect the implementation effect of the present utility model and the practicality of the patent. The protection scope required by this application shall be subject to the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to interpret the content of the claims.

Claims

1. A pasting tool for a composite material compression spline reinforcing sheet, which is used for pasting a test spline (4), and is characterized in that: It includes a lower cover plate (1) and an upper cover plate (9). The test specimen (4) includes a fiberglass reinforced sheet (7) and a composite material sample (8). There are four groups of the fiberglass reinforced sheets (7). Two groups of the four groups of fiberglass reinforced sheets (7) are arranged in pairs and are respectively disposed on both sides of the composite material sample (8). The two groups of fiberglass reinforced sheets (7) on the same side of the composite material sample (8) are arranged side by side with a spacing. The fiberglass reinforced sheet (7) is perpendicularly disposed with respect to the composite material sample (8). A limiting structure is provided on the lower cover plate (1). The test specimen (4) is disposed within the limiting structure. A detachable positioning component is provided on the lower cover plate (1). The positioning component and the limiting structure form a frame structure for limiting the test specimen (4). The upper cover plate (9) is connected to the lower cover plate (1) through a locking device for pressing and fixing the test specimen (4).

2. The pasting tooling for the composite material compression spline reinforcing sheet according to claim 1, characterized in that: The limiting structure includes a first limiting post (2) and a second limiting post (3). There are two groups of both the first limiting post (2) and the second limiting post (3). The two groups of first limiting posts (2) are disposed at the middle position of the lower cover plate (1). The two groups of second limiting posts (3) are disposed on one side of the lower cover plate (1). The connection line of the two groups of first limiting posts (2) is perpendicularly disposed with respect to the connection line of the two groups of second limiting posts (3). The two groups of first limiting posts (2) are located between the two groups of second limiting posts (3). The two groups of first limiting posts (2) and the two groups of second limiting posts (3) respectively form a first channel for placing the fiberglass reinforced sheet (7). The two groups of second limiting posts (3) and the first limiting posts (2) on one side form a second channel for placing the composite material sample (8). The positioning component includes a first limiting block (13) and a second limiting block (18). There are four groups of the first limiting blocks (13) which are respectively disposed on both sides of the lower cover plate (1). The first limiting blocks (13) located on both sides of the two groups of first limiting posts (2) and the two groups of first limiting posts (2) respectively form two first frame structures for limiting the fiberglass reinforced sheet (7). There are two groups of the second limiting blocks (18) which are respectively disposed on one side of the lower cover plate (1). The two groups of second limiting blocks (18) and the two groups of second limiting posts (3) form a second frame structure for limiting the composite material sample (8). The upper cover plate (9) is provided with positioning holes matching the limiting structure, and the positioning holes are used for the connection and positioning of the upper cover plate (9) and the lower cover plate (1).

3. The pasting tooling for a composite material compression spline reinforcement sheet according to claim 2, characterized in that: The first limiting block (13) includes a first fixing block (14) and a first positioning block (15). One side of the first fixing block (14) is fixed with the first positioning block (15). The first positioning block (15) is used to form a first frame structure with two groups of the first limiting columns (2). The height distance that the first positioning block (15) exceeds the lower cover plate (1) is greater than the total thickness of two groups of fiberglass reinforcing sheets (7) and the composite material sample (8). A first strip-shaped hole (16) is provided in the first fixing block (14). A first threaded hole facing the first strip-shaped hole (16) is provided on the end face of the lower cover plate (1). A first bolt (17) passes through the first strip-shaped hole (16) to fix the first limiting block (13) on the lower cover plate (1).

4. The pasting tooling for the composite material compression spline reinforcing sheet according to claim 2, characterized in that: The second limiting block (18) includes a second fixing block (19) and a second positioning block (20). One side of the second fixing block (19) is fixed with the second positioning block (20). The second positioning block (20) is used to form a second frame structure with two groups of the second limiting columns (3). The height distance that the second positioning block (20) exceeds the lower cover plate (1) is greater than the thickness of one group of fiberglass reinforcing sheets (7) and less than the total thickness of the test specimen (4). A second strip-shaped hole is provided in the second fixing block (19). A second threaded hole facing the second strip-shaped hole is provided on the end face of the lower cover plate (1). A second bolt (21) passes through the second strip-shaped hole to fix the second limiting block (18) on the lower cover plate (1).

5. The pasting tooling for the composite material compression spline reinforcing sheet according to claim 1 or 2, characterized in that: A glue cleaning groove (6) is provided in the lower cover plate (1) and / or the upper cover plate (9). The glue cleaning groove (6) is used for the structural glue overflowing after pressing treatment.

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