Performance detection device for PMI foam production

Abstract

The utility model discloses a kind of performance detection devices for PMI foam production, it is related to PMI foam performance detection technical field, including workbench, the top end of workbench is embedded and connected with collection box, and the bottom end of collection box is rotatably connected with discharge base plate, the top end of workbench is fixedly connected with a pair of connecting plate, the top of workbench is equipped with a pair of placing plate. The utility model can scrape the chippings and fragments on the placing plate and rubber pad by scraping cleaning mechanism, make chippings and fragments fall into collection box, realize the chippings and fragments on placing plate and rubber pad are cleaned in time after unqualified PMI foam sample tensile fracture, compared with manual cleaning more quickly and conveniently, reduce the waste of time, while not easy to influence subsequent detection sample fixation;By deflection discharge mechanism can drive discharge base plate to be inclined and deflect downward, can guide waste to be discharged along the inclined surface quickly, realize the waste in the inside of collection box is cleaned.

Description

Technical Field

[0001] This utility model belongs to the field of PMI foam performance testing technology, and in particular relates to a performance testing device for PMI foam production. Background Technology

[0002] PMI (polymethacrylimide) foam, as a high-performance structural core material, is widely used in high-end fields such as aerospace, wind turbine blades, and high-speed trains due to its lightweight, high specific strength, high temperature resistance, and excellent dimensional stability. During the use of PMI foam, the reliability of its mechanical properties directly determines the load-bearing capacity and safety of the composite material structure. Therefore, after the production of PMI foam, it is necessary to test its mechanical properties such as compressive strength, tensile strength, and shear strength. Among them, tensile strength directly reflects the material's resistance to fracture under tensile load and is a key indicator for measuring its load-bearing capacity as a composite sandwich structure.

[0003] When performing tensile strength testing on PMI foam, the sample is fixed at both ends by a clamping tool and then subjected to tensile testing through a phase separation motion. However, during the mechanical property tensile testing process, if the sample fractures brittlely due to insufficient tensile strength, a large volume of waste sample falls into the waste bin after the clamping tool is released. Small fragments or flaky pieces can easily remain on the clamping tool, which rarely has a corresponding cleaning mechanism. Failure to clean in time can affect the fixation of the sample for subsequent testing. Manual cleaning requires staff to carry cleaning tools to the testing site, which is troublesome and time-consuming. Therefore, this utility model proposes a performance testing device for PMI foam production. Utility Model Content

[0004] This invention provides a performance testing device for PMI foam production. A tensile testing mechanism enables the testing of tensile strength of a fixed PMI foam sample. A scraping and cleaning mechanism removes debris and fragments remaining on the placement plate and rubber pad, causing them to fall into a collection box. This allows for timely cleaning of debris and fragments from the placement plate and rubber pad after a defective PMI foam sample breaks under tension, which is faster and more convenient than manual cleaning, reducing time waste and minimizing the impact on sample fixation for subsequent tests. A deflection and discharge mechanism tilts the discharge base plate downwards, guiding waste material to be discharged quickly along the inclined surface, thus cleaning the waste inside the collection box. In summary, this invention solves the problems in the prior art.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model discloses a performance testing device for PMI foam production, comprising:

[0007] A workbench, the top of which is fitted with a collection box and the bottom of which is rotatably connected to a discharge base plate. A pair of connecting plates are fixedly connected to the top of the workbench, and a pair of placement plates are provided on the top of the workbench, with an L-shaped plate fixedly connected to the top of each pair of placement plates.

[0008] A tensile testing mechanism is provided, which is located on the top of the workbench and is used to test the tensile strength of PMI foam.

[0009] A pair of scraping and cleaning mechanisms are provided on an L-shaped plate and are used to clean up defective PMI foam fragments.

[0010] A deflection discharge mechanism is provided on the outside of the discharge base plate and is used to drive the waste material inside the collection box to be discharged.

[0011] The scraping and cleaning mechanism includes a scraper located on the top of the placement plate. A cleaning brush is fixedly connected to the top of the scraper. A pair of sliding cylinders are fixedly connected to one side of the L-shaped plate. A straight plate is fixedly connected between the output ends of the pair of sliding cylinders. A pair of movable rods are fixedly connected to the side of the straight plate near the L-shaped plate. A pair of round holes are drilled on one side of the L-shaped plate. The ends of the pair of movable rods near the L-shaped plate pass through the round holes and are fixedly connected to one side of the scraper.

[0012] Furthermore, a pair of lifting cylinders are embedded and connected to the top of the L-shaped plate, and a pressure plate is fixedly connected between the output ends of the pair of lifting cylinders. A rubber pad is fixedly connected to the bottom end of the pressure plate, and the bottom end of the rubber pad is in contact with the top end of the cleaning brush.

[0013] Furthermore, the tensile testing mechanism includes a bidirectional lead screw rotatably connected between a pair of connecting plates. The outer wall of the bidirectional lead screw is threaded with a pair of threaded movable blocks. A motor is fixedly connected to one side of the connecting plate, and the output end of the motor is fixedly connected to one end of the bidirectional lead screw. An I-shaped rod is fixedly connected to the top of the worktable, and a pair of movable sleeves are sleeved on the outer wall of the I-shaped rod. Connecting plates are fixedly connected to the side of the threaded movable blocks and the movable sleeves near the placement plate, and the opposite sides of the pair of connecting plates are fixedly connected to the outer wall of the placement plate.

[0014] Furthermore, the outer wall of the bidirectional lead screw is provided with a pair of external threads in opposite directions, and a threaded through hole is drilled between the outer walls of the pair of threaded movable blocks. The threaded movable blocks are sleeved on the bidirectional lead screw through the threaded through hole and are threadedly connected to it.

[0015] Furthermore, a pair of collision balls are fixedly connected to the side of the straight plate near the L-shaped plate, and both collision balls are located between a pair of movable rods.

[0016] Furthermore, the bottom end of the scraper is triangular, and the top end of the scraper is inclined.

[0017] Furthermore, the deflection discharge mechanism includes a pair of electric telescopic rods fixedly connected to the top of the workbench. Both sides of the discharge base plate are fixedly connected to a U-shaped block, and a deflection block is rotatably connected inside the U-shaped block through a bearing and a rotating shaft. A pair of connecting pieces are fixedly connected to the top of the deflection block, and the opposite sides of the pair of connecting pieces are rotatably connected to the outer wall of the electric telescopic rod near the bottom through a bearing and a rotating shaft.

[0018] The present invention has the following advantages over the prior art:

[0019] 1. This technical solution uses a lifting cylinder and pressure plate to press down and fix both ends of the PMI foam sample. At the same time, the tensile testing mechanism uses the rotation of a bidirectional screw to drive a pair of placement plates and the PMI foam sample to move apart, so as to facilitate tensile strength performance testing.

[0020] 2. This technical solution utilizes a scraping and cleaning mechanism. After a non-conforming PMI foam sample breaks due to tensile stress, the scraper and cleaning brush move along the top of the placement plate and the bottom of the rubber pad, respectively, to scrape away the debris and fragments remaining on the placement plate and rubber pad. This causes the debris and fragments to fall into the collection box, thus enabling timely cleaning of debris and fragments on the placement plate and rubber pad after the non-conforming PMI foam sample breaks. Compared to manual cleaning, this method is faster and more convenient, reducing wasted time and minimizing the impact on sample fixation for subsequent testing.

[0021] 3. The deflection discharge mechanism set in this technical solution can drive the discharge bottom plate to deflect downward to an inclined state by the push of the electric telescopic rod, so as to guide the waste to be discharged quickly along the inclined surface and realize the cleaning of the waste inside the collection box.

[0022] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional structural diagram of a performance testing device for PMI foam production according to the present invention;

[0025] Figure 2 This is a partial three-dimensional structural diagram of a performance testing device for PMI foam production according to the present invention;

[0026] Figure 3 This is a partial disassembled structural diagram of the L-shaped plate and the scraping cleaning mechanism in this utility model;

[0027] Figure 4 This is a partial cross-sectional view of the workbench and deflection discharge mechanism in this utility model from a bottom view angle;

[0028] Figure 5 This utility model Figure 4 A magnified structural diagram of point A in the middle.

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 1. Workbench; 2. Collection box; 3. Discharge base plate; 4. Connecting plate; 5. Placement plate; 6. L-shaped plate; 7. Lifting cylinder; 8. Pressure plate; 801. Rubber pad; 9. Tensile testing mechanism; 901. Two-way lead screw; 902. Threaded movable block; 903. Motor; 904. I-shaped rod; 905. Moving sleeve block; 906. Connecting plate; 10. Scraping cleaning mechanism; 1001. Scraper; 1002. Cleaning brush; 1003. Sliding cylinder; 1004. Straight plate; 1005. Collision ball; 1006. Movable rod; 11. Deflection discharge mechanism; 1101. Electric telescopic rod; 1102. Connecting piece; 1103. Deflection block; 1104. U-shaped block. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0032] In the description of this utility model, it should be understood that the terms "relative", "one end", "inner", "lateral", "end", "both ends", "both sides", "front", "one end face", "the other end face", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Specific Implementation Example 1:

[0034] Please see Figures 1-5 As shown, the present invention provides a performance testing device for PMI foam production, comprising:

[0035] Workbench 1, with a collection box 2 embedded at the top and a discharge base plate 3 rotatably connected to the bottom of the collection box 2, a pair of connecting plates 4 fixedly connected to the top of the workbench 1, a pair of placement plates 5 provided on the top of the workbench 1, and an L-shaped plate 6 fixedly connected to the top of each pair of placement plates 5.

[0036] Tensile testing mechanism 9 is set on the top of workbench 1 and is used to test the tensile strength performance of PMI foam.

[0037] A pair of scraping and cleaning mechanisms 10 are provided on the L-shaped plate 6, and the scraping and cleaning mechanisms 10 are used to clean up unqualified PMI foam fragments.

[0038] The deflection discharge mechanism 11 is located on the outside of the discharge base plate 3 and is used to drive the waste material inside the collection box 2 to be discharged.

[0039] The scraping and cleaning mechanism 10 includes a scraper 1001 located at the top of the placement plate 5. A cleaning brush 1002 is fixedly connected to the top of the scraper 1001. A pair of sliding cylinders 1003 are fixedly connected to one side of the L-shaped plate 6. A straight plate 1004 is fixedly connected between the output ends of the pair of sliding cylinders 1003. A pair of movable rods 1006 are fixedly connected to the side of the straight plate 1004 near the L-shaped plate 6. A pair of round holes are drilled on one side of the L-shaped plate 6. The ends of the pair of movable rods 1006 near the L-shaped plate 6 pass through the round holes and are fixedly connected to one side of the scraper 1001.

[0040] In the specific implementation process, after the non-conforming PMI foam sample breaks under tension, the large volume of waste material falls into the collection box 2 after the pressure plate 8 is released and fixed. The small fragments or flaky pieces remain on the placement plate 5 and the rubber pad 801. A pair of sliding cylinders 1003 drive a pair of straight plates 1004 to move towards the L-shaped plate 6. Through a pair of movable rods 1006, the scraper 1001 and the cleaning brush 1002 move along the top of the placement plate 5 and the bottom of the rubber pad 801, respectively, to scrape the fragments and pieces remaining on the placement plate 5 and the rubber pad 801. This pushes the fragments and pieces off the placement plate 5 and the rubber pad 801 and into the collection box 2. This allows for timely cleaning of the fragments and pieces on the placement plate 5 and the rubber pad 801 after the non-conforming PMI foam sample breaks under tension. Compared with manual cleaning, this is faster and more convenient, reduces time waste, and is less likely to affect the fixation of samples for subsequent testing.

[0041] Among them, a pair of lifting cylinders 7 are embedded and connected to the top of the L-shaped plate 6, and a pressure plate 8 is fixedly connected between the output ends of the pair of lifting cylinders 7. A rubber pad 801 is fixedly connected to the bottom end of the pressure plate 8, and the bottom end of the rubber pad 801 is in contact with the top end of the cleaning brush body 1002.

[0042] A pair of lifting cylinders 7 drive the pressure plate 8 and rubber pad 801 to move downwards, pressing down and fixing the PMI foam sample on the placement plate 5. At the same time, the rubber pad 801 buffers the downward pressure to prevent excessive force from damaging the surface.

[0043] Among them, a pair of collision balls 1005 are fixedly connected to the side of the straight plate 1004 near the L-shaped plate 6, and the pair of collision balls 1005 are both located between a pair of movable rods 1006.

[0044] When the straight plate 1004 pushes a pair of movable rods 1006 to move, it will also drive a pair of collision balls 1005 to move synchronously until the pair of movable rods 1006 push the scraper 1001 and the cleaning brush 1002 from one side of the placement plate 5 to the other side, pushing the debris and scrap into the collection box 2. At this time, the pair of collision balls 1005 move to contact and collide with one side of the L-shaped plate 6. The vibration generated by the collision shakes off the debris and scrap remaining on the scraper 1001 and the cleaning brush 1002, so that the debris and scrap can fall into the collection box 2.

[0045] The bottom of the scraper 1001 is triangular, and the top of the scraper 1001 is inclined.

[0046] By setting the bottom of the scraper 1001 to be triangular, the debris and scrap on the placement plate 5 can be scraped more thoroughly for cleaning. At the same time, the top of the scraper 1001 is set at an angle, which allows the debris and scrap to fall quickly along the angled direction when the debris and scrap are shaken off by vibration, reducing residue.

[0047] The deflection discharge mechanism 11 includes a pair of electric telescopic rods 1101 fixedly connected to the top of the workbench 1. Both sides of the discharge base plate 3 are fixedly connected to a U-shaped block 1104. The inside of the U-shaped block 1104 is rotatably connected to a deflection block 1103 through a bearing and a rotating shaft. The top of the deflection block 1103 is fixedly connected to a pair of connecting pieces 1102. The opposite sides of the pair of connecting pieces 1102 are rotatably connected to the outer wall of the electric telescopic rod 1101 near the bottom through a bearing and a rotating shaft.

[0048] A pair of electric telescopic rods 1101 press a pair of deflecting blocks 1103 downwards, causing them to drive the discharge base plate 3 to deflect downwards to an inclined state, causing the bottom of the collection box 2 to open, and allowing the waste to be discharged downwards along the inclined discharge base plate 3, thereby cleaning the waste inside the collection box 2. Specific Implementation Example 2:

[0050] Please see Figures 1-2 As shown, in a preferred embodiment, the tensile testing mechanism 9 includes a bidirectional lead screw 901 rotatably connected between a pair of connecting plates 4. A pair of threaded movable blocks 902 are threadedly connected to the outer wall of the bidirectional lead screw 901. A motor 903 is fixedly connected to one side of one of the connecting plates 4, and the output end of the motor 903 is fixedly connected to one end of the bidirectional lead screw 901. An I-shaped rod 904 is fixedly connected to the top of the worktable 1, and a pair of movable sleeve blocks 905 are sleeved on the outer wall of the I-shaped rod 904. A connecting plate 906 is fixedly connected to the side of the threaded movable block 902 and the movable sleeve block 905 near the placement plate 5, and the opposite sides of the pair of connecting plates 906 are fixedly connected to the outer wall of the placement plate 5.

[0051] In the specific implementation process, the drive motor 903 drives the bidirectional lead screw 901 to rotate, which drives a pair of threaded movable blocks 902 to move apart, and through the connecting plate 906 drives a pair of placement plates 5 to move apart along the I-shaped rod 904 with the assistance of the moving sleeve block 905, thereby driving the PMI foam sample that is pressed down and fixed to perform tensile strength performance testing.

[0052] The outer wall of the bidirectional lead screw 901 is provided with a pair of external threads in opposite directions. A threaded through hole is drilled between the outer walls of a pair of threaded movable blocks 902. The threaded movable blocks 902 are sleeved on the bidirectional lead screw 901 through the threaded through hole and are threadedly connected to it.

[0053] By setting a pair of external threads in opposite directions on the bidirectional lead screw 901, a pair of threaded movable blocks 902 can move towards or away from each other along the bidirectional lead screw 901 through the threaded through hole when the bidirectional lead screw 901 rotates.

[0054] The circuits, electronic components, and chip modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0055] All standard parts used in the application documents can be purchased from the market. All components in this application document can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The electrical components mentioned in this document are all electrically connected to the external main controller and power supply, and the main controller is a conventional known device that can play a control role.

[0056] The working principle of this utility model is as follows:

[0057] In use, this invention first places the PMI foam sample on top of a pair of placement plates 5, and drives the lifting cylinder 7 to move the pressure plate 8 and rubber pad 801 downwards, pressing and fixing the PMI foam sample on the placement plates 5. Then, the drive motor 903 drives the bidirectional lead screw 901 to rotate, causing it to move a pair of threaded movable blocks 902 away from each other. Through the connecting plate 906, the pair of placement plates 5, with the assistance of the moving sleeve block 905, move away from each other along the I-shaped rod 904, causing the pressed and fixed PMI foam sample to undergo tensile strength testing. If a defective sample breaks during the tensile strength test, the driving cylinder 7 moves the pressure plate 8 and rubber pad 801 upwards, releasing the pressure on the defective PMI foam sample. The fixation of the MI foam sample causes large-volume waste to fall into the collection box 2, while the fine fragments or flaky pieces remain on the placement plate 5 and the rubber pad 801. At this time, a pair of sliding cylinders 1003 drive a pair of straight plates 1004 to move towards the L-shaped plate 6, and through a pair of movable rods 1006 drive the scraper 1001 and the cleaning brush 1002 to move along the top of the placement plate 5 and the bottom of the rubber pad 801 respectively, scraping away the fragments and pieces remaining on the placement plate 5 and the rubber pad 801, pushing the fragments and pieces away from the placement plate 5 and the rubber pad 801 and falling into the collection box 2. This achieves timely cleaning of the fragments and pieces on the placement plate 5 and the rubber pad 801 after the unqualified PMI foam sample is stretched and broken.

[0058] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A performance testing device for PMI foam production, characterized in that, include: A workbench (1) is provided with a collection box (2) embedded at the top of the workbench (1), and a discharge base plate (3) is rotatably connected to the bottom of the collection box (2). A pair of connecting plates (4) are fixedly connected to the top of the workbench (1). A pair of placement plates (5) are provided on the top of the workbench (1), and an L-shaped plate (6) is fixedly connected to the top of each pair of placement plates (5). Tensile testing mechanism (9), which is set on the top of the workbench (1) and is used to test the tensile strength performance of PMI foam; A pair of scraping and cleaning mechanisms (10) are provided on an L-shaped plate (6) and are used to clean up unqualified PMI foam fragments; A deflection discharge mechanism (11) is provided on the outside of the discharge base plate (3), and the deflection discharge mechanism (11) is used to drive the waste material inside the collection box (2) to be discharged. The scraping and cleaning mechanism (10) includes a scraper (1001) located on the top of the placement plate (5). A cleaning brush (1002) is fixedly connected to the top of the scraper (1001). A pair of sliding cylinders (1003) are fixedly connected to one side of the L-shaped plate (6). A straight plate (1004) is fixedly connected between the output ends of the pair of sliding cylinders (1003). A pair of movable rods (1006) are fixedly connected to the side of the straight plate (1004) near the L-shaped plate (6). A pair of round holes are drilled on one side of the L-shaped plate (6). The end of the pair of movable rods (1006) near the L-shaped plate (6) passes through the round holes and is fixedly connected to one side of the scraper (1001).

2. The performance testing device for PMI foam production according to claim 1, characterized in that, A pair of lifting cylinders (7) are embedded and connected to the top of the L-shaped plate (6), and a pressure plate (8) is fixedly connected between the output ends of the pair of lifting cylinders (7). A rubber pad (801) is fixedly connected to the bottom end of the pressure plate (8), and the bottom end of the rubber pad (801) is in contact with the top end of the cleaning brush body (1002).

3. The performance testing device for PMI foam production according to claim 1, characterized in that, The tensile testing mechanism (9) includes a bidirectional lead screw (901) rotatably connected between a pair of connecting plates (4). The outer wall of the bidirectional lead screw (901) is threaded with a pair of threaded movable blocks (902). A motor (903) is fixedly connected to one side of the connecting plate (4) on one side, and the output end of the motor (903) is fixedly connected to one end of the bidirectional lead screw (901). The top of the worktable (1) is fixedly connected with an I-shaped rod (904), and a pair of movable sleeve blocks (905) are sleeved on the outer wall of the I-shaped rod (904). The threaded movable block (902) and the movable sleeve block (905) are both fixedly connected with connecting plates (906) on the side near the placement plate (5), and the opposite sides of the pair of connecting plates (906) are fixedly connected to the outer wall of the placement plate (5).

4. The performance testing device for PMI foam production according to claim 3, characterized in that, The outer wall of the bidirectional lead screw (901) is provided with a pair of external threads in opposite directions. A threaded through hole is drilled between the outer walls of the pair of threaded movable blocks (902). The threaded movable blocks (902) are sleeved on the bidirectional lead screw (901) through the threaded through hole and are threadedly connected to it.

5. The performance testing device for PMI foam production according to claim 1, characterized in that, A pair of collision balls (1005) are fixedly connected to the side of the straight plate (1004) near the L-shaped plate (6), and the pair of collision balls (1005) are both located between a pair of movable rods (1006).

6. The performance testing device for PMI foam production according to claim 1, characterized in that, The bottom of the scraper (1001) is triangular, and the top of the scraper (1001) is inclined.

7. The performance testing device for PMI foam production according to claim 1, characterized in that, The deflection discharge mechanism (11) includes a pair of electric telescopic rods (1101) fixedly connected to the top of the workbench (1). Both sides of the discharge base plate (3) are fixedly connected to a U-shaped block (1104), and the inside of the U-shaped block (1104) is rotatably connected to a deflection block (1103) through a bearing and a rotating shaft. The top of the deflection block (1103) is fixedly connected to a pair of connecting pieces (1102), and the opposite sides of the pair of connecting pieces (1102) are rotatably connected to the outer wall of the electric telescopic rod (1101) near the bottom through a bearing and a rotating shaft.

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