Test piece pressurizing tool

Abstract

The invention discloses a test piece pressurizing tool, and belongs to the technical field of shearing test piece preparation. A placing area for placing test pieces is formed on a placing seat, and the placing area has a set height in the vertical direction, so that a plurality of groups of test pieces can be stacked in the placing area in the vertical direction, and the test pieces are sequentially placed from bottom to top; after the test pieces are placed and stabilized, the test pieces are pressurized through the pressurizing unit, and due to the fact that the test pieces are stacked in the vertical direction, when the test pieces are pressurized through the pressurizing unit, only downward pressure needs to be applied to the uppermost group of test pieces, solidification of all the test pieces under the condition of the same temperature is facilitated, and in conclusion, the test pieces are not prone to deformation. The test blocks are stacked in the vertical direction, so that the comparability and reliability of final data can be improved, after the test blocks are stacked in the vertical direction, the operation area needed for pressurizing the test blocks is smaller, vertical development in space is achieved, and the test block pressurizing device is particularly suitable for pressurizing a large batch of test blocks.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shear test piece preparation, in particular to a test piece pressing tool. BACKGROUND

[0002] The adhesive tensile shear strength and peel strength test piece is an important carrier for verifying the mechanical property index of the adhesive. The mechanical property of the adhesive can be directly obtained through the detection of the test piece. Compared with the product physical detection, the cost and difficulty are greatly reduced. When the test piece is bonded, a pressing clamp is usually used to press the test piece to apply accurate and stable pressure to the test piece, so as to ensure the accuracy of the final test result. A tensile shear and peel test piece sample preparation tool is disclosed in a Chinese utility model patent with the authorization announcement No. CN223037526U, which belongs to the field of adhesive detection. It comprises a bottom plate, a tensile shear sample preparation assembly and a peel sample preparation assembly arranged on the bottom plate. The tensile shear sample preparation assembly comprises a first test piece groove and a second test piece groove arranged on the bottom plate. The first test piece groove and the second test piece groove are arranged along a first direction. The peel sample preparation assembly comprises two guide columns arranged on the bottom plate. A plurality of pressing blocks are arranged between the two guide columns and slide along a second direction. A test piece mounting groove is arranged on the pressing block along a third direction. The first test piece groove and the second test piece groove are located between the two guide columns. The pressing block is located above the second test piece groove. The first direction, the second direction and the third direction are perpendicular to each other. The tensile shear test piece and the peel test piece can be prepared at the same time. The thickness of the adhesive layer of different adhesives can meet the standard requirements by adjusting the pressure.

[0003] The existing pressing tool usually lays each group of test pieces horizontally when installing the test pieces. A pressing head applies pressure to all test pieces at the same time, which results in a large area of the pressing head. When there is a slight non-parallelism in the table, the pressing head or the test piece itself, the actual pressure received by the test pieces at different positions will be different. At the same time, a slight shear force or bending moment will be generated on the test piece, which will cause a slight misplacement or uneven thickness of the adhesive layer of the test piece, which may interfere with the final measurement result. At the same time, the test pieces do not contact each other, which makes it difficult to ensure that the test pieces are at the same temperature condition for curing. At the same time, the number of test pieces that can be pressed at the same time is limited by the horizontal area of the pressing head. The number of test pieces pressed at one time is small, which makes it difficult to press a large number of test pieces.

[0004] Therefore, the present application designs a test piece pressing tool to solve the above problems. SUMMARY

[0005] This invention provides a test piece pressurization fixture to solve the technical problem of uneven stress caused by the horizontal arrangement of test pieces in the prior art pressurization fixture.

[0006] According to one aspect of the present invention, a test piece pressurizing fixture is provided, comprising a placement unit for placing test pieces and a pressurizing unit for applying a set pressure to the test pieces on the placement unit. The placement unit includes a placement seat and a placement area formed on the placement seat. The placement area is used to place the test pieces and restrict the test pieces in the horizontal direction. The placement area has a set height in the vertical direction so that the placement area can accommodate multiple sets of test pieces in the vertical direction.

[0007] As a further embodiment of the present invention, the placement unit further includes a support component, which is used to support the suspended end of the test piece in the placement area before the pressurizing unit pressurizes it. An opening is provided on one side of the placement area in the width direction for the test piece to move horizontally into the placement area.

[0008] As a further embodiment of the present invention, the support assembly includes a column, a support member slidably disposed on the column along the vertical direction, and an adjustment component for adjusting the height of the support member. The column is disposed around the placement area, and a groove is formed on the column along the vertical direction. Multiple support members are provided and slidably disposed in the grooves. The adjustment component is used to adjust the position of the support member in the groove, so that the support member supports the suspended end of the test piece before the pressurizing unit presses the test piece, and so that the support member disengages from the test piece after the pressurizing unit presses the test piece.

[0009] As a further embodiment of the present invention, the adjusting component includes a scissor frame, an adjusting block, and a lifting bolt. The end of the support member away from the placement area is connected to the scissor frame. The top end of the scissor frame is connected to the lifting bolt through the adjusting block, and the bottom end is hinged to the column. The lifting bolt is threaded onto the column along a vertical thread so that the lifting bolt can drive the scissor frame to expand or contract. The expansion or contraction of the scissor frame simultaneously adjusts the spacing between the multiple support members connected to the scissor frame.

[0010] As a further embodiment of the present invention, two support components are provided, which are respectively disposed on opposite sides of the placement base and are used to support two test pieces in the same group of test pieces one by one.

[0011] As a further embodiment of the present invention, the placement base is provided with limiting posts, and the uprights and limiting posts are arranged on the placement base at a set position to enclose and form the placement area on the upper surface of the placement base.

[0012] As a further embodiment of the present invention, the pressurizing unit includes a mounting column, a swing arm, and a counterweight assembly. The mounting column is located on the periphery of the placement area. The swing arm is rotatably mounted on the mounting column along a horizontal axis and is used to rotate and descend to press down on the top of the test piece placed in the placement area. The counterweight assembly is located at the end of the swing arm away from the mounting column and is used to increase the pressure applied by the swing arm to the test piece.

[0013] As a further embodiment of the present invention, a pressure block is vertically slidably disposed in the placement area. The pressure block is used to contact the swing arm through its top end and press it onto the test piece through its bottom surface. The top end of the pressure block is provided with a spherical structure for contacting the swing arm, and the spherical structure is located at the center of the width direction and the length direction of the placement area.

[0014] As a further embodiment of the present invention, the side of the swing arm that contacts the pressure block is provided with a spherical groove with a diameter matching the spherical structure, and the position of the placement seat relative to the mounting column is adjustable to adjust the spherical structure to face the spherical groove.

[0015] As a further aspect of the present invention, the side of the swing arm that contacts the pressure block is provided with an arc groove with a diameter matching the spherical structure, and the arc groove extends along the length direction of the swing arm.

[0016] The present invention has the following beneficial effects: This invention creates a placement area for test specimens on a placement base. This placement area has a predetermined height in the vertical direction, allowing multiple sets of test specimens to be stacked vertically within this area. The specimens are placed sequentially from bottom to top. After the specimens are placed and stabilized, pressure is applied to them via a pressurizing unit. Because the specimens are stacked vertically, when pressurizing them, only the topmost set of specimens needs to be subjected to downward pressure. The pressure is then distributed sequentially to all the specimens below, ensuring that the stacked specimens experience consistent and uniform pressure. This guarantees that all specimens cure under nearly identical pressure conditions. Simultaneously, the pressure is distributed along the stack... The specimens are transferred from top to bottom, which does not generate additional shear force or bending moment on the bonding surface of the specimens. This ensures that the specimens only bear pure normal pressure during the pressurization process, eliminating a potential source of test error. Furthermore, stacking the specimens vertically allows heat conduction between adjacent groups of specimens, making the temperature fields of the specimens similar during the pressurization process. This is beneficial for all specimens to cure under the same temperature conditions. In summary, stacking the specimens vertically can improve the comparability and reliability of the final data. Stacking the specimens vertically also reduces the operating area required for pressurizing the specimens, achieving "vertical development" in space. This is particularly suitable for pressurizing large quantities of specimens.

[0017] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the placement unit in this invention; Figure 3 This is a schematic diagram of the supporting component in this invention; Figure 4 This is a schematic diagram showing the connection between the scissor frame and the support member in this invention; Figure 5 This is a schematic diagram of the pressurization unit in this invention; Figure 6 This is a schematic diagram of the arc-shaped groove in this invention.

[0019] Legend: 1. Placement unit; 11. Placement seat; 111. Placement area; 112. Limiting post; 12. Support assembly; 121. Column; 1211. Slide groove; 122. Support component; 123. Scissor frame; 124. Adjusting block; 125. Lifting bolt; 13. Pressure block; 131. Spherical structure; 2. Pressurizing unit; 21. Mounting post; 22. Swing arm; 221. Spherical groove; 222. Arc groove; 23. Counterweight assembly. Detailed Implementation

[0020] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0021] Please see Figures 1-6 The present invention provides a technical solution: a test piece pressurizing fixture, including a placement unit 1 for placing test pieces and a pressurizing unit 2 for applying a set pressure to the test pieces on the placement unit 1. The placement unit 1 includes a placement seat 11 and a placement area 111 formed on the placement seat 11. The placement area 111 is used to place test pieces and restrict the test pieces in the horizontal direction. The placement area 111 has a set height in the vertical direction so that the placement area 111 can accommodate multiple sets of test pieces in the vertical direction. When pressurizing the test piece, the test piece is placed in the placement area 111 formed on the placement seat 11. Since the placement area 111 has a set height in the vertical direction, multiple sets of test pieces can be stacked vertically within the placement area 111. The test pieces are placed sequentially from bottom to top. After the test pieces are placed and stabilized, pressure is applied to the test pieces through the pressurizing unit 2. Because the test pieces are stacked vertically, when pressurizing the test pieces through the pressurizing unit 2, only the top set of test pieces needs to be subjected to downward pressure. The pressure will be applied sequentially to all the test pieces below through the test pieces, and the stacked test pieces will bear the pressure. The pressure is consistent and uniform, ensuring that all specimens cure under nearly the same pressure conditions. At the same time, the pressure is transmitted from top to bottom along the stacked specimens, without generating additional shear force or bending moment on the bonding surface of the specimens. This ensures that the specimens only bear pure normal pressure during the pressurization process, eliminating a potential source of experimental error. Furthermore, stacking the specimens vertically allows heat conduction between adjacent groups of specimens, making the temperature field of the specimens similar during the pressurization process. This is beneficial for all specimens to cure under the same temperature conditions. In summary, stacking the specimens vertically can improve the comparability and reliability of the final data. By stacking the test pieces vertically, the operating area required for pressurizing the test pieces is also smaller, achieving "vertical development" in space, which is particularly suitable for pressurizing large quantities of test pieces. By restricting the horizontal direction of the test pieces by the placement area 111, it is ensured that the test pieces can be aligned during the stacking process, avoiding misalignment between test pieces in the horizontal direction, ensuring accurate pressure results, and also ensuring the stability of the test pieces during the pressure process.

[0022] Furthermore, the placement unit 1 also includes a support component 12, which is used to support the suspended end of the test piece in the placement area 111 before the pressurizing unit 2 pressurizes it. The placement area 111 has an opening on one side in the width direction for the test piece to move horizontally into the placement area 111. like Figures 1-2 As shown, after the test pieces are stacked vertically in the placement area 111, except for the test piece at the bottom, the ends of the other test pieces that are away from the adhesive surface are suspended. The test piece pressing fixture also includes a support component 12. The support component 12 can support the suspended end of the test piece before the pressing unit 2 pressurizes the test piece, so that the test pieces stacked in the placement area 111 can remain stable before pressurization, prevent the suspended end of the test piece from falling, ensure the stability of the test piece in the protection area, and facilitate the stacking of test pieces. Since the test piece needs to be supported by the support component 12, the support component 12 will inevitably intrude into the placement area 111. If the test piece moves from top to bottom when it enters the placement area 111, the test piece may interfere with the support component 12. Therefore, one side of the placement area 111 is opened in the width direction. When placing the test piece, the test piece can move horizontally into the placement area 111 from this opening, thereby avoiding interference between the placement path of the test piece and the support component 12. Specifically, the support assembly 12 includes a column 121, a support member 122 slidably disposed on the column 121, and an adjustment component for adjusting the height of the support member 122. The column 121 is disposed around the placement area 111, and a groove 1211 is vertically provided on the column 121. Multiple support members 122 are provided and slidably disposed in the groove 1211. The adjustment component is used to adjust the position of the support member 122 in the groove 1211 so that the support member 122 supports the suspended end of the test piece before the pressurizing unit 2 pressurizes the test piece, and so that the support member 122 is disengaged from the test piece after the pressurizing unit 2 pressurizes the test piece. like Figure 2 As shown, the support assembly 12 includes a column 121. A support member 122 is slidably mounted on the column 121 via a groove 1211. The position of the support member 122 within the groove 1211 is adjusted by an adjusting component, thereby adjusting the height of the support member 122. Since the test pieces are stacked vertically, multiple support members 122 are required. These multiple support members 122 support multiple test pieces vertically. When stacking the test pieces, the adjusting component adjusts the support member 122 to a set height. At this set height, the support member 122 can just contact the bottom surface of the suspended end of the test piece, thus... The suspended end of the test piece is supported to prevent it from falling. When the pressure unit 2 applies pressure to the test piece, the adhesive surface of the test piece is pressed tightly by the pressure of the pressure unit 2, and the suspended end of the test piece will not fall. Under the pressure of the pressure unit 2, the two test pieces that are glued together will fit more tightly. Except for the test piece at the bottom, the height of the remaining test pieces will decrease to varying degrees. In order to avoid the support member 122 interfering with the descent of the test piece, the height of the support member 122 is lowered by adjusting the component, so that the support member 122 is no longer in contact with the suspended end of the test piece, thus avoiding the support member 122 interfering with the descent of the test piece. Meanwhile, the height of the support component 122 is adjustable, which can accommodate test pieces of different thicknesses, increasing the applicability of the overall device; There are many possible structures for adjusting the height of the support member 122. However, since the test pieces are stacked, the amount of descent of the test pieces after being subjected to the pressure of the pressurizing unit 2 will accumulate from bottom to top. The test pieces at higher positions will have a greater descent. To match this change, in this example, the adjustment components include a scissor frame 123, an adjustment block 124, and a lifting bolt 125. The end of the support member 122 away from the placement area 111 is connected to the scissor frame 123. The top of the scissor frame 123 is connected to the lifting bolt 125 through the adjustment block 124, and the bottom end is hinged to the column 121. The lifting bolt 125 is threaded on the column 121 along the vertical thread so that the lifting bolt 125 can drive the scissor frame 123 to expand or contract. The expansion or contraction of the scissor frame 123 simultaneously adjusts the spacing between the multiple support members 122 connected to the scissor frame 123. like Figures 3-4 As shown, the height of the support member 122 is adjusted by the scissor frame 123. The bottom end of the scissor frame 123 is hinged to the column 121, while the top end of the scissor frame 123 is connected to the lifting bolt 125 through the adjusting block 124. By rotating the lifting bolt 125, the scissor frame 123 can be extended or retracted as a whole. Since the bottom end of the scissor frame 123 is hinged to the column 121, the relative position between the bottom end of the scissor frame 123 and the column 121 remains unchanged during the extension and retraction of the scissor frame 123. The scissor frame 123 consists of multiple scissor arms connected together in a specific way. During the extension or retraction of the scissor frame 123, the scissor arms closer to the top of the scissor frame 123 rise or fall more, and the distance between each scissor arm always increases or decreases synchronously with the extension or retraction of the scissor frame 123. This is the same as the change law of the test piece. Therefore, using the scissor frame 123 to adjust the height of the support member 122 can better match the height change of the test piece. Specifically, such as Figure 4 As shown, the support member 122 is hinged to the middle of the scissor arm. During the lifting and lowering process of the scissor frame 123, the center position of the scissor arm will only change in the height direction. Therefore, the support member 122 is hinged to the center position of the scissor arm, and the height of the support member 122 is adjusted by the height change of the center position of the scissor arm. Specifically, such as Figures 3-4 As shown, the bottom end of the lifting bolt 125 is rotatably mounted on the top end of the adjusting block 124, and the adjusting block 124 is provided with an adjusting groove. The top ends of the two scissor arms at the top of the scissor frame 123 are slidably mounted in the adjusting groove. When the lifting bolt 125 drives the scissor frame 123 to unfold or retract through the adjusting block 124, the top ends of the two scissor arms at the top will slide in the adjusting groove, so that the scissor frame 123 can unfold or retract normally. Specifically, there are two support components 12, which are used to support two specimens in the same group of specimens respectively, such as... Figure 2 As shown, the two support components 12 are respectively disposed on both sides of the placement area 111 along the length direction, and are used to support the test piece from the end away from the adhesive surface. Of course, the two support components 12 can also be disposed on one side of the placement area 111 along the width direction, and support the test piece from the middle position. When the test pieces are stacked, they are arranged in a staggered manner. That is to say, the height position of the support member 122 in the two support components 12 also needs to be staggered to adapt to the arrangement pattern of the test pieces.

[0023] Specifically, the placement base 11 is provided with a limiting post 112, and the upright post 121 and the limiting post 112 are arranged on the placement base 11 at a set position to form a placement area 111 between the limiting post 112 and the upright post 121. like Figure 2 As shown, in this example, the limiting area is formed by the upright 121 and the limiting post 112. The upright 121 and the limiting post 112 are arranged on the placement base 11 at a set position, and a placement area 111 is formed between the limiting post 112 and the upright 121. Specifically, the pressurizing unit 2 includes a mounting column 21, a swing arm 22, and a counterweight assembly 23. The mounting column 21 is located on the periphery of the placement area 111. The swing arm 22 is rotatably mounted on the mounting column 21 along a horizontal axis and is used to rotate and descend to press the top of the test piece in the placement area 111. The counterweight assembly 23 is located at the end of the swing arm 22 away from the mounting column 21 and is used to increase the pressure applied by the swing arm 22 to the test piece. like Figure 5 As shown in this example, when pressurizing the test piece, the swing arm 22 is rotated to bring it closer to the placement area 111, and finally the swing arm 22 presses down on the stacked test pieces. At this time, the weight of the swing arm 22 will act on the test piece. When we need to adjust the pressure of the swing arm 22 on the test piece, a counterweight component 23 can be installed at the end of the swing arm 22 away from the mounting post 21. The weight of the counterweight component 23 will also act on the stacked test pieces through the swing arm 22, thereby adjusting the pressure acting on the test piece. When it is necessary to place or take out the test piece in the placement area 111, first remove the counterweight component 23 on the swing arm 22, and then rotate the swing arm 22 upward away from the placement area 111. At this time, the test piece in the placement area 111 will no longer be under pressure and can be placed or taken out normally. Furthermore, a pressure block 13 is vertically slidably arranged in the placement area 111. The pressure block 13 is used to contact the swing arm 22 through its top end and press it onto the test piece through its bottom surface. The top end of the pressure block 13 is provided with a spherical structure 131 for contacting the swing arm 22, and the spherical structure 131 is located at the center of the width direction and the length direction of the placement area 111. like Figure 5 As shown, a pressure block 13 slides vertically within the placement area 111. The swing arm 22 transmits pressure to the test piece through the pressure block 13. The top of the pressure block 13 has a spherical structure 131 for contacting the swing arm 22, and the spherical structure 131 is located at the center of the width and length of the placement area 111. In use, the pressure block 13 is first pressed onto the test piece, and then the swing arm 22 is pressed onto the pressure block 13, thereby achieving the pressing of the swing arm 22 onto the test piece. Since the contact point between the top of the pressure block 13 and the swing arm 22 is the spherical structure 131, when the pressure block 13 contacts the spherical structure 131, even if the swing arm 22 is in an inclined state, the contact point between the swing arm 22 and the spherical structure 131 will be close to the center of the spherical structure 131 on the horizontal plane. Structure 131 is located at the center of the width and length of the placement area 111. This means that the pressure applied by the swing arm 22 will be close to the center of the placement area 111, which is also the center of the adhesive surface. At the same time, since the pressure block 13 is slidably disposed in the placement area 111, after the pressure block 13 is subjected to the downward pressure of the swing arm 22, even if the swing arm 22 is tilted to the horizontal plane, the pressure block 13 can convert the tilted downward pressure into a vertical downward pressure, thereby ensuring that the clamping force is perpendicular to the adhesive surface. In this way, the pressure applied by the swing arm 22 will be transmitted to each test piece with almost no loss in the vertical direction, ensuring the accuracy of the final test data. At the same time, when pressurizing test pieces of different heights or different numbers of test pieces, the pressing effect on the test pieces can be guaranteed. like Figure 5 As shown, in some examples, the side of the swing arm 22 that contacts the pressure block 13 has a spherical groove 221 with a diameter matching the spherical structure 131. The position of the placement seat 11 relative to the mounting post 21 is adjustable so that the spherical structure 131 can be accurately inserted into the spherical groove 221. The swing arm 22 contacts the pressure block 13 through its bottom surface, and the bottom surface of the swing arm 22 has a spherical groove 221. When the swing arm 22 is pressed against the pressure block 13, the spherical structure 131 on the pressure block 13 can enter the spherical groove 221, increasing the contact area between the swing arm 22 and the pressure block 13, and making the pressure applied by the swing arm 22 on the pressure block 13 more evenly distributed on the pressure block 13. Furthermore, the swing arm 22 has multiple spherical grooves 221 along its length. The final height of the test pieces after stacking will be different for different heights or different numbers of test pieces. The tilt angle of the swing arm 22 after contacting the pressure block 13 at different positions will also be different. If the height of the spherical structure 131 at the top of the final pressure block 13 exceeds the height of the bottom surface of the swing arm 22 in the horizontal state, then the further away the contact position between the pressure block 13 and the swing arm 22 is from the mounting post 21, the smaller the tilt angle of the swing arm 22 will be. Conversely, if the height of the spherical structure 131 at the top of the final pressure block 13 is lower than the height of the bottom surface of the swing arm 22 in the horizontal state, then the closer the contact position between the pressure block 13 and the swing arm 22 is to the mounting post 21, the smaller the tilt angle of the swing arm 22 will be. Therefore, the spherical grooves 221 at different positions of the swing arm 22 can be selected to contact the spherical structure 131 of the pressure block 13 according to the final height of the pressure block 13, so that the swing arm 22 is as close to the horizontal state as possible. In this way, the pressure of the swing arm 22 will be more evenly distributed on the pressure block 13. like Figure 6 As shown, in some other examples, the side of the swing arm 22 that contacts the pressure block 13 is provided with an arc groove 222 with a diameter matching the spherical structure 131. The arc groove 222 extends along the length of the swing arm 22. Similarly, the arc groove 222 contacts the spherical structure 131 at the top of the pressure block 13, thereby increasing the contact area between the swing arm 22 and the pressure block 13, and making the pressure applied by the swing arm 22 on the pressure block 13 more evenly distributed on the pressure block 13. Furthermore, in this example, the position of the placement seat 11 relative to the mounting post 21 is adjustable. The arc groove 222 can be selected to contact the spherical structure 131 of the pressure block 13 at different positions according to the final height of the pressure block 13, so that the swing arm 22 is as close to the horizontal state as possible. In this way, the pressure of the swing arm 22 will be more evenly distributed on the pressure block 13. Specifically, regarding the sliding of the placement seat 11, in this example, both the placement seat 11 and the mounting post 21 are located on the base, and the placement seat 11 and / or the mounting post 21 can slide on the base; Specifically, the limiting post 112 has an installation groove in the middle for the pressure block 13 to slide. The pressure block 13 is slidably set in the installation groove in the middle of the limiting post 112, and the pressure block 13 can be disengaged from the top of the installation groove. When installing the test piece, the pressure block 13 can be disengaged from the placement area 111 first, which facilitates the installation of the test piece. Specifically, the counterweight component 23 is a conventional technical means in this field, and this application does not limit it.

[0024] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A test piece pressurizing fixture, comprising a placement unit (1) for placing a test piece and a pressurizing unit (2) for applying a set pressure to the test piece on the placement unit (1), characterized in that: The placement unit (1) includes a placement seat (11) and a placement area (111) formed on the placement seat (11). The placement area (111) is used to place the test piece and restrict the test piece in the horizontal direction. The placement area (111) has a set height in the vertical direction so that the placement area (111) can accommodate multiple sets of test pieces in the vertical direction.

2. The test piece pressurization fixture according to claim 1, characterized in that: The placement unit (1) further includes a support component (12), which is used to support the suspended end of the test piece in the placement area (111) before the pressurizing unit (2) pressurizes it. The placement area (111) has an opening on one side in the width direction for the test piece to move horizontally into the placement area (111).

3. The test piece pressurization fixture according to claim 2, characterized in that: The support assembly (12) includes a column (121), a support member (122) that is slidably mounted on the column (121) along the vertical direction, and an adjustment component for adjusting the height of the support member (122). The column (121) is located around the placement area (111). The support member (122) is provided in multiple ways and is used to support different test pieces respectively. The adjustment component is used to keep the support member (122) at a set height before the pressurizing unit (2) presses the test piece so that the support member (122) supports the suspended end of the test piece, and is used to lower the support member (122) and disengage from the test piece when the pressurizing unit (2) presses the test piece.

4. The test piece pressurization fixture according to claim 3, characterized in that: The adjustment components include a scissor frame (123), an adjustment block (124), and a lifting bolt (125). The end of the support member (122) away from the placement area (111) is connected to the scissor frame (123). The top of the scissor frame (123) is connected to the lifting bolt (125) through the adjustment block (124), and the bottom end is hinged to the column (121). The lifting bolt (125) is threaded on the column (121) so that the lifting bolt (125) can drive the scissor frame (123) to expand or contract. The expansion or contraction of the scissor frame (123) simultaneously adjusts the spacing between the multiple support members (122) connected to the scissor frame (123).

5. The test piece pressurization fixture according to claim 2, characterized in that: The support components (12) are provided in two parts. The two support components (12) are respectively located on opposite sides of the placement seat (11) and are used to support the two test pieces in the same group of test pieces one by one.

6. The test piece pressurization fixture according to claim 3, characterized in that: The placement seat (11) is provided with a limiting post (112). The upright post (121) and the limiting post (112) are arranged on the placement seat (11) at a set position to enclose the placement area (111) on the upper surface of the placement seat (11).

7. The test piece pressurization fixture according to claim 1, characterized in that: The pressurizing unit (2) includes a mounting column (21), a swing arm (22), and a counterweight assembly (23). The mounting column (21) is located on the periphery of the placement area (111). The swing arm (22) is rotatably mounted on the mounting column (21) along a horizontal axis and is used to rotate and descend to press the top of the test piece in the placement area (111). The counterweight assembly (23) is located at the end of the swing arm (22) away from the mounting column (21) and is used to increase the pressure applied by the swing arm (22) to the test piece.

8. The test piece pressurization fixture according to claim 7, characterized in that: A pressure block (13) is vertically slidably disposed in the placement area (111). The pressure block (13) is used to contact the swing arm (22) through its top end and press it onto the test piece through its bottom surface. The top end of the pressure block (13) is provided with a spherical structure (131) for contacting the swing arm (22), and the spherical structure (131) is located at the center of the width and length directions of the placement area (111).

9. The test piece pressurization fixture according to claim 8, characterized in that: The side of the swing arm (22) that contacts the pressure block (13) has a spherical groove (221) with a diameter matching the spherical structure (131). The position of the placement seat (11) relative to the mounting column (21) is adjustable, and is used to adjust the spherical structure (131) to face the spherical groove (221).

10. The test piece pressurization fixture according to claim 8, characterized in that: The side of the swing arm (22) that contacts the pressure block (13) has an arc groove (222) with a diameter matching the spherical structure (131), and the arc groove (222) extends along the length of the swing arm (22).

Images