Resin Reactivity Testing Device

Abstract

This invention provides a resin reactivity testing device, including a loading chamber, side membranes, and a movable plate. A slide rail groove is formed on the side of the loading chamber. The side membrane surrounds the four walls of the loading chamber, with the first end of the side membrane fixedly connected to the end face of the first end of the loading chamber, and both sides of the side membrane adhering to the sides of the loading chamber. The movable plate is slidably disposed within the slide rail groove, and an elongated hole is formed in the center of the movable plate. The center of the second end of the side membrane passes through the elongated hole, and the surfaces of the side membranes within the elongated hole abut against each other. This invention allows the side membranes to be stretched or compressed by the up-and-down movement of the movable plate. The space between the movable plate and the first end of the loading chamber is adjusted by changing the position of the side membrane according to the resin type and the thickness of the pultruded profile, thus solving the problem of the limited loading chamber size in existing equipment.

Description

Technical Field

[0001] This utility model relates to the field of pultrusion resin simulation testing, and more specifically, to a resin reactivity testing device. Background Technology

[0002] In the pultrusion process, the reactivity of the resin plays a crucial role in the curing quality of the profile. To accurately simulate the resin curing behavior during pultrusion, the testing equipment needs to realistically reflect the resin's reaction characteristics under different temperature and time conditions. Existing pultrusion resin reactivity testing equipment, such as the Chinese patent application CN202211059896.1, can simulate the continuous heating and curing process of resin in the pultrusion mold by setting multiple heating temperature zone components and separating components. One of its core components is the resin loading assembly, which sequentially passes through each heating temperature zone under the drive of the moving assembly. Heaters heat the hot bath oil, hot bath thermocouples monitor the temperature in real time, resin thermocouples monitor the temperature change of the resin within the loading cavity, and speed monitoring sensors record the moving speed. By controlling the motor speed, the resin temperature-time curves at different speeds can be simulated. Furthermore, the door panel assembly controls the opening and closing of the through holes through an electromagnetic lock and a rotary actuator to ensure the smooth movement of the resin loading assembly.

[0003] Different types of resins (such as epoxy resin, unsaturated polyester resin, vinyl ester resin, etc.) vary significantly in chemical composition, reactivity, and curing characteristics. Therefore, loading cavities of different sizes are required to accommodate these resins with different properties to ensure the accuracy and representativeness of test results. Furthermore, the thickness of pultruded profiles may vary in actual production due to application scenarios and design requirements.

[0004] However, the loading chamber of existing pultrusion resin reactivity testing equipment has a relatively uniform size. This single-size design can only be used for testing a specific type of resin. When it is necessary to test different types of resins and pultruded profile thicknesses, the existing equipment requires replacing the entire loading chamber. This process is not only cumbersome but also time-consuming, seriously affecting testing efficiency and equipment flexibility. Utility Model Content

[0005] The purpose of this invention is to provide a resin reactivity testing device that can change the size of the loading cavity to suit the testing needs of different resin types and pultruded profile thicknesses.

[0006] The embodiments of this utility model are achieved through the following technical solution: a resin reactivity testing device, comprising a loading chamber, a side membrane, and a moving plate;

[0007] The loading cavity is used to connect with the moving component. The loading cavity is cuboid in shape and contains resin. A slide rail groove is formed on the side of the loading cavity from the first end to the second end. The first end and the second end of the loading cavity are opposite to each other.

[0008] The side membrane is arranged around the four walls of the loading cavity, the side of the first end of the side membrane is fixedly connected to the end face of the first end of the loading cavity, and the two sides of the side membrane are attached to the side of the loading cavity.

[0009] The movable plate is disposed inside the loading cavity. A pulley is provided on the side of the movable plate and the pulley is slidably disposed in the slide rail groove. An elongated hole is opened in the middle of the movable plate along the height direction of the movable plate. The length of the elongated hole is greater than the height of the side film. The second end of the side film is opposite to the first end of the side film. The center of the second end of the side film passes through the elongated hole, and the surfaces of the side films inside the elongated hole are pressed against each other.

[0010] In one embodiment, a connecting strip is provided at the midpoint of the second end of the loading cavity, and the middle part of the second end of the side membrane passes through the elongated hole and is connected to the connecting strip.

[0011] In one embodiment, a retaining strip is provided on the side of the side membrane facing the side of the loading cavity, and a retaining groove is provided on the side of the loading cavity, and the retaining strip is engaged in the retaining groove.

[0012] In one embodiment, clamping strips are provided at both ends of the movable plate, and the clamping strips abut against the side of the side film to press the side film against the side of the loading cavity.

[0013] In one embodiment, the movable plate is provided with a sealing strip that abuts against the second end of the side membrane at the gap through the elongated hole.

[0014] In one embodiment, a rotating shaft is provided at the top of the movable plate, and a bending rod is rotatably mounted on the rotating shaft, with the end of the bending rod connected to the top of the sealing strip.

[0015] In one embodiment, a pressure strip is provided at the bottom edge of the movable plate, and the pressure strip abuts against the bottom surface of the loading cavity.

[0016] In one embodiment, the side of the loading cavity is provided with a movable scale along the direction from the first end to the second end, and the zero point of the movable scale is located on the side near the first end.

[0017] In one embodiment, the side of the clamping strip is arc-shaped.

[0018] In one embodiment, the edge of the movable plate is provided with an elastic element, which abuts against the side wall of the loading cavity.

[0019] The technical solution of this utility model embodiment has at least the following advantages and beneficial effects:

[0020] 1. This utility model allows the side film to be stretched or compressed by the up-and-down movement of the moving plate. The space between the moving plate and the first end of the loading cavity is adjusted by the moving plate pushing the side film to adjust the space of the loading cavity according to the resin type and the thickness of the pultruded profile, thus solving the problem of the single size of the loading cavity in the existing equipment.

[0021] 2. This utility model features a sealing strip on the movable plate, which abuts against the gap at the second end of the side membrane through the elongated hole. This sealing strip design further enhances the sealing of the space enclosed by the side membrane, preventing resin leakage due to gaps and improving the reliability of test results. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the loading cavity in this utility model;

[0025] Figure 3 This is a schematic diagram of the front structure of the movable plate in this utility model;

[0026] Figure 4 This is a schematic diagram of the side membrane structure in this utility model;

[0027] Figure 5 This is a schematic diagram of the reverse side structure of the movable plate in this utility model.

[0028] Icons: 10. Loading cavity; 11. Slide rail groove; 12. Connecting strip; 13. Slot; 14. Moving scale; 20. Side membrane; 21. Locking strip; 30. Moving plate; 31. Pulley; 32. Long strip hole; 33. Pressing strip; 34. Connecting rod; 35. Sealing strip; 36. Rotating shaft; 37. Bending rod; 38. Lower pressure strip; 39. Elastic element. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0030] Example

[0031] The following detailed description, in conjunction with specific embodiments, further illustrates that this utility model is a resin reactivity testing device, such as... Figures 1-3 As shown, it includes a loading cavity 10, a side membrane 20, and a movable plate 30;

[0032] The loading cavity 10 is used to connect with the moving component. The loading cavity 10 is cuboid in shape. The loading cavity 10 is filled with resin. The side of the loading cavity 10 is provided with a slide rail groove 11 from the first end to the second end. The first end and the second end of the loading cavity 10 are opposite to each other.

[0033] The side membrane 20 is disposed around the four walls of the loading cavity 10. The side of the first end of the side membrane 20 is fixedly connected to the end face of the first end of the loading cavity 10, and the two sides of the side membrane 20 are attached to the side of the loading cavity 10.

[0034] The movable plate 30 is disposed inside the loading cavity 10. A pulley 31 is provided on the side of the movable plate 30. The pulley 31 is slidably disposed in the slide rail groove 11. An elongated hole 32 is formed in the middle of the movable plate 30 along the height direction of the movable plate 30. The length of the elongated hole 32 is greater than the height of the side film 20. The second end of the side film 20 is opposite to the first end of the side film 20. The center of the second end of the side film 20 passes through the elongated hole 32, and the surfaces of the side film 20 inside the elongated hole 32 are pressed against each other.

[0035] In one embodiment, the side membrane 20 is located inside the loading cavity 10, and the upper and lower edges of the side of the side membrane 20 are in contact with the surface of the loading cavity 10. The first end surface of the side membrane 20 is fixedly connected to the first end face of the loading cavity 10. Depending on the type of resin and the thickness of the pultruded profile, the moving plate 30 is moved within the loading cavity 10 via the slide rail groove 11, rapidly changing the space between the moving plate 30 and the first end of the loading cavity 10. During the movement of the moving plate 30, the second end of the side membrane 20 passes through the elongated hole 32, and the surfaces of the side membrane 20 within the elongated hole 32 abut against each other, ensuring the airtightness of the space enclosed by the side membrane 20, effectively preventing resin leakage, and ensuring the stability and safety of the testing process.

[0036] like Figure 1 and Figure 2As shown, a connecting strip 12 is provided at the midpoint of the second end of the loading cavity 10, and the middle part of the second end of the side membrane 20 passes through the elongated hole 32 and is connected to the connecting strip 12.

[0037] In one embodiment, a connecting strip 12 is provided at the midpoint of the second end of the loading cavity 10. The connecting strip 12 extends along the depth direction of the loading cavity 10 and connects the midpoint of the second end of the side membrane 20 to the connecting strip 12. The connecting strip 12 provides guidance for the movement of the side membrane 20, allowing the side membrane 20 to slide smoothly within the elongated hole 32, which can effectively enhance the stability of the side membrane 20 during movement. This prevents the side membrane 20 from shifting or twisting during stretching or compression, ensuring that the side membrane 20 can smoothly adjust the size of the internal space of the loading cavity 10 under the action of the moving plate 30.

[0038] like Figure 2 and Figure 4 As shown, a retaining strip 21 is provided on the side of the side membrane 20 facing the side of the loading cavity 10, and a retaining groove 13 is provided on the side of the loading cavity 10, and the retaining strip 21 is engaged in the retaining groove 13.

[0039] In one embodiment, a retaining strip 21 is provided on the outer surface of the side membrane 20. The retaining strip 21 is made of an elastic material and extends along the length of the side membrane 20. A retaining groove 13 is formed on the side of the loading cavity 10. When the side of the side membrane 20 is attached to the side of the loading cavity 10, the retaining strip 21 is engaged in the retaining groove 13 to improve the stability of the side membrane 20 when it is attached to the side wall of the loading cavity 10.

[0040] like Figure 3 and Figure 4 As shown, the movable plate 30 is provided with pressing strips 33 on both sides. The pressing strips 33 abut against the side of the side film 20, pressing the side film 20 against the side of the loading cavity 10.

[0041] In one embodiment, two connecting rods 34 are fixedly installed on the edge of the movable plate 30, with the two connecting rods 34 located on both sides of the movable plate 30. The first end of the connecting rod 34 is fixedly connected to the top of the movable plate 30, and the connecting rod 34 is located above the side membrane 20, with the first and second ends of the connecting rod 34 located on both sides of the side membrane 20. Two clamping strips 33 are installed on the movable plate 30, and both clamping strips 33 are parallel to the height direction of the movable plate 30. The top end of the clamping strip 33 is fixedly connected to the second end of the connecting rod 34. The clamping strip 33 presses the side of the side membrane 20 against the side wall of the loading cavity 10, reducing the gap between the side membrane 20 and the side of the loading cavity 10, making the locking strip 21 and the locking groove 13 more stably engaged, and making the side membrane 20 fit the loading cavity 10 more closely. This prevents the side membrane 20 from shifting or twisting when stretched or compressed, ensuring that the side membrane 20 can smoothly adjust the size of the internal space of the loading cavity 10 under the action of the movable plate 30. In addition, the clamping strip 33 not only serves a sealing function, but also provides additional support for the side membrane 20, which can prevent the side membrane 20 from shifting or deforming during movement and improve the stability of the side membrane 20.

[0042] like Figure 1 and Figure 3 As shown, a sealing strip 35 is provided on the movable plate 30, and the sealing strip 35 abuts against the gap where the second end of the side membrane 20 passes through the elongated hole 32.

[0043] In one embodiment, the side membrane 20 leaves a gap on its surface as it passes through the elongated hole 32, which can affect resin testing. A sealing strip 35 is installed on the movable plate 30, located at the center of the movable plate 30 and opposite to the elongated hole 32. When the side membrane 20 passes through the elongated hole 32, the sealing strip 35 abuts against the gap in the side membrane 20, increasing the sealing of the space enclosed by the side membrane 20.

[0044] like Figure 1 and Figure 3 As shown, a rotating shaft 36 is provided at the top of the movable plate 30, and a bending rod 37 is rotatably mounted on the rotating shaft 36. The end of the bending rod 37 is connected to the top of the sealing strip 35.

[0045] In one embodiment, a rotating shaft 36 is disposed at the top of the movable plate 30, extending along the width direction of the movable plate 30. A first end of a bending rod 37 is rotatably connected to the rotating shaft 36, and a second end of the bending rod 37 extends above the space enclosed by the side membrane 20, and is fixedly connected to the top end of the sealing strip 35. When the movable plate 30 is adjusted, the sealing strip 35 and the bending rod 37 rotate around the rotating shaft 36, causing the sealing strip 35 to separate from the gap in the side membrane 20, preventing the sealing strip 35 from affecting the passage of the side membrane 20 through the elongated hole 32.

[0046] like Figure 5 As shown, a pressure strip 38 is provided on the bottom edge of the movable plate 30, and the pressure strip 38 abuts against the bottom surface of the loading cavity 10.

[0047] In one embodiment, the lower pressure strip 38 is disposed at the bottom of the moving plate 30, and the lower pressure strip 38 is used to abut against the bottom surface of the loading cavity 10 to increase the sealing between the moving plate 30 and the bottom surface of the loading cavity 10.

[0048] like Figure 2 As shown, the side of the loading cavity 10 is provided with a movable scale 14 along the direction from the first end to the second end, and the zero point of the movable scale 14 is located on the side near the first end.

[0049] In one embodiment, the movable scale 14 extends from the first end of the loading cavity 10 toward the second end, and the zero point of the movable scale 14 is located at the first end of the loading cavity 10. When adjusting the movable plate 30 within the loading cavity 10, the size of the space enclosed by the side film 20 can be more clearly indicated by the numbers on the movable plate 30 relative to the movable scale 14, thereby increasing the ease of operation.

[0050] like Figure 3 As shown, the side of the clamping strip 33 is arc-shaped.

[0051] In one embodiment, the side of the pressing strip 33 is set to be arc-shaped. With the design of the arc-shaped pressing strip 33, the side film 20 is subjected to more uniform force when it is pressed by the pressing strip 33, which extends the service life of the side film 20 and avoids damage to the side film 20 due to excessive local force.

[0052] like Figure 5 As shown, the edge of the movable plate 30 is provided with an elastic element 39, which abuts against the side wall of the loading cavity 10.

[0053] In one embodiment, the elastic element 39 can be an elastic sheet or a spring, and it abuts against the inner wall of the loading cavity 10. The abutting action of the elastic element 39 ensures the stable movement of the moving plate 30 within the loading cavity 10, avoiding test errors caused by displacement of the moving plate 30. During resin flow, especially when the resin in the loading cavity 10 is subjected to thermal expansion or flow impact, the moving plate 30 may be displaced due to lateral forces. The abutting action of the elastic element 39 can effectively counteract these lateral forces, preventing the moving plate 30 from displacing during resin flow, thereby improving the stability of the moving plate 30.

[0054] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A resin reactivity testing apparatus characterized by comprising: Includes loading cavity, side membrane, and moving plate; The loading cavity is used to connect with the moving component. The loading cavity is cuboid in shape and contains resin. A slide rail groove is formed on the side of the loading cavity from the first end to the second end. The first end and the second end of the loading cavity are opposite to each other. The side membrane is arranged around the four walls of the loading cavity, the side of the first end of the side membrane is fixedly connected to the end face of the first end of the loading cavity, and the two sides of the side membrane are attached to the side of the loading cavity. The movable plate is disposed inside the loading cavity. A pulley is provided on the side of the movable plate and the pulley is slidably disposed in the slide rail groove. An elongated hole is opened in the middle of the movable plate along the height direction of the movable plate. The length of the elongated hole is greater than the height of the side film. The second end of the side film is opposite to the first end of the side film. The center of the second end of the side film passes through the elongated hole, and the surfaces of the side films inside the elongated hole are pressed against each other.

2. The resin reactivity testing apparatus of claim 1, wherein: A connecting strip is provided at the midpoint of the second end of the loading cavity, and the middle part of the second end of the side membrane passes through the elongated hole and is connected to the connecting strip.

3. The resin reactivity testing apparatus of claim 1, wherein: A retaining strip is provided on the side of the side membrane facing the side of the loading cavity, and a retaining groove is provided on the side of the loading cavity, and the retaining strip is engaged in the retaining groove.

4. The resin reactivity testing apparatus of claim 1, wherein: The movable plate is provided with clamping strips on both sides, which abut against the side of the side film to press the side film against the side of the loading cavity.

5. The resin reactivity testing apparatus of claim 1, wherein: A sealing strip is provided on the movable plate, and the sealing strip abuts against the second end of the side membrane at the gap through the elongated hole.

6. The resin reactivity testing apparatus of claim 5, wherein: The top of the movable plate is provided with a rotating shaft, and a bending rod is rotatably mounted on the rotating shaft. The end of the bending rod is connected to the top of the sealing strip.

7. The resin reactivity testing device according to claim 1, characterized in that: The bottom edge of the movable plate is provided with a pressure strip, which abuts against the bottom surface of the loading cavity.

8. The resin reactivity testing device according to claim 1, characterized in that: The side of the loading cavity is provided with a movable scale along the direction from the first end to the second end, and the zero point of the movable scale is located on the side near the first end.

9. The resin reactivity testing device according to claim 4, characterized in that: The side of the clamping strip is arc-shaped.

10. The resin reactivity testing device according to claim 1, characterized in that: The edge of the movable plate is provided with an elastic element, which abuts against the side wall of the loading cavity.

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