Thermal deformation test device

Abstract

The utility model discloses a thermal deformation experiment device relates to thermal deformation experiment technical field, including oven, box door, display, temperature sensor, auxiliary mechanism and cleaning mechanism. The utility model discloses thermal deformation experiment device, through the roller rotation will exert certain tension to film material, and then adjust the tension size of film material, simulate the thermal deformation condition of film material in practical application, improve the accuracy of experimental data, through the auxiliary mechanism makes the roller along from the oven depth remove close box door, and make the roller and rotating column no longer close, need not staff to pull out the roller and maintain with effort, thereby save time and improve maintenance efficiency, through the cleaning mechanism clean the film material residue and dirt of roller outer wall, prevent film material residue and dirt influence the subsequent detection work, and reduce the work load of staff routine cleaning.

Description

Technical Field

[0001] This utility model relates to the field of thermal deformation testing technology, specifically to a thermal deformation testing device. Background Technology

[0002] Heat distortion testing of polymer materials is a standardized testing method used to determine the temperature at which a material undergoes a specified deformation under a constant load during heating. This temperature value is a key indicator for evaluating the short-term heat resistance and dimensional stability of the material. A heat distortion testing apparatus is a specialized device used to measure the heat distortion temperature or Vicat softening temperature of a material under a specific load as the temperature increases, and an oven is a very common component of such an apparatus.

[0003] Existing heat distortion tests for polymer materials mostly involve placing the film sheet at the required temperature and baking it in an oven for a certain period of time, then observing the shrinkage of the film. This method is relatively direct but lacks tension. However, the film material is under tension during subsequent production and processing. The magnitude of the tension plays a significant role in the transverse and longitudinal stretching of the film material and the appearance of the film surface. Without a heat distortion test device to simulate tension, it is difficult to simulate the stress state in actual processing, which may lead to the risk of data misrepresentation in the experimental data. Utility Model Content

[0004] The purpose of this invention is to provide a thermal deformation testing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a heat deformation testing device, comprising:

[0006] Oven;

[0007] The support rod is disposed at the top of the inner wall of the oven;

[0008] A rotating column is provided below the support rod, and there are two rotating columns arranged opposite each other along the vertical plane of the support rod. The rotating column can rotate around its axis.

[0009] A roller, which is sleeved on a rotating column and rotates as the rotating column rotates;

[0010] An auxiliary mechanism is provided for driving the roller to move out of the oven along the axial direction of the rotating column.

[0011] The rotation of the rollers applies a certain tension to the membrane material, thereby adjusting the tension and simulating the thermal deformation of the membrane material in actual applications, thus improving the accuracy of the experimental data.

[0012] Preferably, the auxiliary mechanism includes a base, a limiting component is provided at the lower end of the base, a servo motor is installed in the middle of the outer wall of the base, and a threaded column is fixedly connected to the output end of the servo motor. A threaded plate is threadedly connected to the middle of the outer wall of the threaded column, and transmission rods are fixedly connected to both sides of the bottom end of the threaded plate. A movable cavity is opened in the middle of the top end of the base, and the middle part of the threaded plate extends into it. Movable grooves are opened on both sides of the outer wall of the base, and the transmission rods extend into them.

[0013] Preferably, the limiting member has a "T" shaped structure, and the limiting member is engaged with the limiting groove of the oven. The limiting members are evenly distributed, and an extension plate is connected to one side of the outer wall of the transmission rod.

[0014] By moving the base, the limiting component is inserted into the bottom of the inner wall of the oven, thereby limiting the base and preventing it from moving randomly.

[0015] Preferably, the extension plate is internally threaded with a threaded pin, the transmission rod has an internal threaded hole into which the threaded pin extends, and the transmission rod has an "L" shaped structure.

[0016] By rotating the threaded pin, the connection with the transmission rod is disengaged, thereby removing the fixation to the base.

[0017] Preferably, a base is welded to the top of the outer wall of the extension plate, and a movable hole corresponding to the roller is opened in the middle of the base. A fixed cavity is opened at the bottom of the base, and the top of the threaded plate extends into it.

[0018] The roller passes through the movable hole, so the roller does not obstruct the movement of the base.

[0019] Preferably, a fixing plate is slidably connected inside the base, and the fixing plate can extend into the movable hole, and the fixing plate has an "L" shaped structure.

[0020] By pushing the fixed plate into the movable hole, the fixed plate moves and contacts the roller, thereby generating a thrust on the roller, causing the roller to move out from the depth of the oven and close to the oven door along the rotating column.

[0021] Preferably, it also includes a cleaning mechanism, which includes a fixed base, a snap-fit ​​component and a cleaning sleeve. Fixed bases are welded to both sides of the middle part of the base, and snap-fit ​​components are snapped into the fixed bases.

[0022] The cleaning mechanism removes membrane residue and dirt from the outer wall of the roller to prevent these residues from affecting subsequent testing.

[0023] Preferably, a cleaning sleeve is fixedly connected to one side of the outer wall of the snap-fit ​​component, and the cleaning sleeve has an "O" shaped structure. The cleaning sleeve can be moved along the roller to the fixed seat.

[0024] By rotating the cleaning sleeve, the snap-fit ​​component is brought into a vertical position. At this time, the snap-fit ​​component moves into the fixed base and engages with it. Then, when the base moves, it will drive the cleaning sleeve to move together.

[0025] Preferably, a support plate is welded to the inner wall of the oven near the support rod, the support plate has a support hole inside, and the support rod extends into it, and a fixing groove is opened on both sides of the top of the base, and a support seat is engaged inside the fixing groove.

[0026] The support plate provides auxiliary support to the suspended side of the support rod.

[0027] Preferably, the bottom of the support base has a "T" shape, the top of the support base has an arc shape, and the support base can assist in supporting the rotating column.

[0028] The rotating column is further supported by the top of the support base to prevent one side of the rotating column from being suspended and causing the roller to move downward as well.

[0029] As can be seen from the above, the thermal deformation experimental device provided by this utility model has the following beneficial effects.

[0030] 1. The rotation of the rollers applies a certain tension to the membrane material, thereby adjusting the tension and simulating the thermal deformation of the membrane material in actual applications, thus improving the accuracy of experimental data.

[0031] 2. An auxiliary mechanism allows the rollers to move out from the depth of the oven and closer to the door, and the rollers are no longer tightly fitted with the rotating column. This eliminates the need for workers to painstakingly pull out the rollers for maintenance, thus saving time and improving maintenance efficiency.

[0032] 3. The cleaning mechanism removes membrane residue and dirt from the outer wall of the roller, preventing membrane residue and dirt from affecting subsequent testing work and reducing the daily cleaning workload of staff.

[0033] 4. The rotating column is further supported by the top of the support base to prevent one side of the rotating column from being suspended and causing the roller to move down along with it, thereby improving the support stability of the roller. Attached Figure Description

[0034] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0035] Figure 2 This is a schematic diagram of the internal three-dimensional structure of the present invention;

[0036] Figure 3 This is a side view of the three-dimensional cross-sectional structure of the present invention;

[0037] Figure 4 This is a three-dimensional structural diagram of the base of this utility model;

[0038] Figure 5 This is a schematic diagram of the main structure of the base of this utility model;

[0039] Figure 6 This is a three-dimensional structural diagram of the threaded plate of this utility model;

[0040] Figure 7 This is a three-dimensional cross-sectional view of the base structure of this utility model;

[0041] Figure 8 This is a three-dimensional structural diagram of the fixing plate of this utility model;

[0042] Figure 9 This is a three-dimensional sectional view of the fixing base of this utility model.

[0043] In the diagram: 1. Oven; 2. Door; 3. Display; 4. Temperature sensor; 5. Support rod; 6. Drive motor; 7. Rotating column; 8. Roller; 9. Auxiliary mechanism; 901. Base; 902. Limiting component; 903. Servo motor; 904. Threaded column; 905. Threaded plate; 906. Transmission rod; 907. Extension plate; 908. Threaded pin; 909. Base; 910. Fixing plate; 10. Cleaning mechanism; 1001. Fixing seat; 1002. Snap-fit ​​component; 1003. Cleaning sleeve; 11. Support plate; 12. Support base. Detailed Implementation

[0044] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0045] Please see Figures 1-8This utility model provides a technical solution: a heat distortion testing device, including an oven 1, a door 2, a display 3, a temperature sensor 4, an auxiliary mechanism 9, and a cleaning mechanism 10. The door 2 is rotatably connected to the middle of the outer wall of the oven 1, and the display 3 is embedded in the middle of the top of the oven 1. Temperature sensors 4 are installed on both sides of the top of the inner wall of the oven 1. A support rod 5 is connected to the middle of the top of the inner wall of the oven 1, and drive motors 6 are installed on both sides of the outer wall of the oven 1. A rotating column 7 is fixedly connected to the output end of the drive motor 6, and a rotating column 7 is movably sleeved in the middle of the outer wall of the rotating column 7. The roller 8 and auxiliary mechanism 9 include a base 901, a limiting member 902, a servo motor 903, a threaded column 904, a threaded plate 905, a transmission rod 906, an extension plate 907, a threaded pin 908, a base 909, and a fixing plate 910. A limiting groove is formed at the bottom of the inner wall of the oven 1, and the limiting member 902 is connected inside the limiting groove. The base 901 is fixedly connected to the top of the outer wall of the limiting member 902. The servo motor 903 is installed in the middle of the outer wall of the base 901, and the threaded column 904 is fixedly connected to the output end of the servo motor 903. A threaded plate 905 is threadedly connected to the middle of the outer wall of the threaded column 904, and a transmission rod 906 is fixedly connected to both sides of the bottom end of the threaded plate 905; a movable cavity is opened in the middle of the top end of the base 901, and the middle of the threaded plate 905 extends into it; movable grooves are opened on both sides of the outer wall of the base 901, and the transmission rod 906 extends into them; the limiting member 902 has a "T" shaped structure, and the limiting member 902 is engaged with the limiting groove of the oven 1; the limiting members 902 are evenly distributed; an extension plate 907 is connected to one side of the outer wall of the transmission rod 906; extension The plate 907 is internally threaded with a threaded pin 908. The transmission rod 906 has a threaded hole inside, into which the threaded pin 908 extends. The transmission rod 906 has an "L" shaped structure. The top of the outer wall of the extension plate 907 is welded with a base 909, and the middle of the base 909 has a movable hole corresponding to the roller 8. The bottom of the base 909 has a fixed cavity, into which the top of the threaded plate 905 extends. The base 909 is internally slidably connected with a fixed plate 910, which can extend into the movable hole. The fixed plate 910 has an "L" shaped structure.

[0046] For specific implementation, please refer to Figures 1-4First, open the chamber door 2. Then, place the middle part of the film material on the support rod 5. The two ends of the film material are fixed to two sets of rollers 8. Multiple grooves are provided on the surface of the rollers 8 to increase friction and prevent the film material from sliding. Tension sensors are embedded inside the rollers 8 and are connected to the central control system to achieve real-time acquisition and feedback of tension data. Simultaneously, the oven 1 is started to generate heat. At this time, the temperature sensor 4 monitors the internal temperature of the oven 1 and displays it on the display 3 (the tension sensor model is "LB50", and the temperature sensor 4 model is "AM2305"; these are existing technologies and will not be described further). Then, the drive motor 6 is started to drive the rotating column 7 to rotate. The rotating column 7 has protrusions extending on both sides of its outer wall, and the inner wall of the roller 8 has grooves that match the protrusions. When the rotating column 7 rotates, the roller 8 can be driven to rotate through the protrusions. The rotation of the roller 8 will apply a certain tension to the membrane material, thereby adjusting the tension of the membrane material and simulating the thermal deformation of the membrane material in actual applications, thus improving the accuracy of experimental data. A specified length distance, such as 10cm, is marked on the surface of the membrane material. The membrane material is placed in an oven and placed on the support rod 5. The two ends of the membrane material are connected to the two rollers 8 respectively. The drive motor 6 is started, and the rotating roller 8 applies a certain tension to the membrane material. After being kept in the high-temperature oven 1 for a certain period of time, the membrane material is taken out and the rate of change of the marked distance and the distance after the thermal deformation test is observed.

[0047] See Figures 2-8 When the roller 8 needs to be disassembled for maintenance, the servo motor 903 in the middle of the outer wall of the base 901 is started first. Since the output end of the servo motor 903 is connected to the threaded column 904, the start of the servo motor 903 will drive the threaded column 904 to rotate. Then the rotation of the threaded column 904 will drive the threaded plate 905 to move linearly. The movement of the threaded plate 905 will drive the base 909 and the transmission rod 906 to move together. Then the movement of the base 909 will drive the fixed plate 910 to move together. The fixed plate 910 is pushed in advance to extend into the movable hole. At this time, the movement of the fixed plate 910 will contact the roller 8, thereby generating a pushing force on the roller 8, so that the roller 8 moves out from the depth of the oven 1 along the rotating column 7 and approaches the oven door 2. The roller 8 and the rotating column 7 are no longer tightly attached, so the staff does not need to pull out the roller 8 for maintenance, thus saving time and improving maintenance efficiency.

[0048] When the base 909 is damaged and needs to be replaced, since the base 901 is connected to the limiting member 902, the fixing plate 910 is pushed out of the movable hole beforehand, and then the base 901 is moved out of the oven 1. During the process of the base 901 moving out, the roller 8 will pass through the movable hole, so the roller 8 will not obstruct the base 909 from moving out of the oven 1.

[0049] After the base 901 moves the base 909 out of the oven 1, rotate the threaded pin 908 inside the extension plate 907 until the threaded pin 908 is disengaged from the transmission rod 906, thereby releasing the limiting effect on the extension plate 907. Since there are two sets of base 909 and the base 909 is slidably connected to the threaded plate 905, move the base 909 horizontally to move the extension plate 907 away from each other, or move the base 909 upward to disengage the base 909 from the threaded plate 905. This allows for quick disassembly of the base 909 for maintenance. When the base 909 needs to be installed, simply move the base 909 sequentially so that the extension plate 907 is close to the transmission rod 906. At this time, the threaded plate 905 will be inserted into the bottom of the base 909 on the side closest to each other, forming a snap-fit ​​connection, thereby limiting the base 909 to prevent it from swinging back and forth. Then, rotate the threaded pin 908 to pass through the extension plate 907 and insert it into the transmission rod 906, thereby fixing the base 909 and installing it back in its original position.

[0050] Furthermore, the auxiliary mechanism 9 allows the roller 8 to move out from the depth of the oven 1 and approach the oven door 2, so that the roller 8 and the rotating column 7 are no longer tightly attached. This eliminates the need for staff to pull out the roller 8 for maintenance, thus saving time and improving maintenance efficiency. It also makes it convenient for operators to quickly disassemble the base 909 for maintenance.

[0051] See Figure 2 , Figure 4 , Figure 5 , Figure 7 and Figure 9 The cleaning mechanism 10 includes a fixed base 1001, a snap-fit ​​component 1002, and a cleaning sleeve 1003. The fixed base 1001 is welded to both sides of the middle part of the base 909, and the snap-fit ​​component 1002 is snapped into the fixed base 1001. The cleaning sleeve 1003 is fixedly connected to one side of the outer wall of the snap-fit ​​component 1002, and the cleaning sleeve 1003 has an "O" shaped structure. The cleaning sleeve 1003 can be moved along the roller 8 to the fixed base 1001.

[0052] In practice, since the snap-fit ​​1002 is connected to the cleaning sleeve 1003, the cleaning sleeve 1003 is first rotated to make the snap-fit ​​1002 horizontal. Then, the cleaning sleeve 1003 is moved through the roller 8 so that the snap-fit ​​1002 is close to the fixed seat 1001. Then, the cleaning sleeve 1003 is rotated to make the snap-fit ​​1002 vertical. At this time, the snap-fit ​​1002 moves into the fixed seat 1001 and engages with it. Then, when the base 909 moves, it will drive the cleaning sleeve 1003 to move together. At this time, the inner wall of the cleaning sleeve 1003 will rub against the outer wall of the roller 8, thereby cleaning the film residue and dirt on the outer wall of the roller 8.

[0053] After the roller 8 has finished inspecting a single batch of membrane material, the cleaning mechanism 10 cleans the membrane material residue and dirt on the outer wall of the roller 8 to prevent the membrane material residue and dirt from affecting subsequent inspection work, thereby facilitating the cleaning of the roller 8 by the staff and reducing the daily cleaning workload.

[0054] See Figure 3 , Figure 4 and Figure 5 A support plate 11 is welded to the inner wall of the oven 1 near the support rod 5. The support plate 11 has a support hole inside, and the support rod 5 extends into it. The top of the base 901 has a fixing groove on both sides, and a support seat 12 is engaged inside the fixing groove. The bottom of the support seat 12 has a "T" shaped structure, and the top of the support seat 12 has an arc shape. The support seat 12 can assist in supporting the rotating column 7.

[0055] In practice, the support base 12 is first moved so that its bottom is inserted into the base 901. At this time, the top of the support base 12 contacts one side of the rotating column 7, thereby providing auxiliary support for the rotating column 7 and preventing the side of the rotating column 7 from being suspended, which would cause the side of the roller 8 to also move down. The support plate 11 provides auxiliary support for the side of the support rod 5, thereby improving the support stability of the roller 8 and preventing the side of the roller 8 from being suspended and shifting downward, which would affect the thermal deformation experiment.

[0056] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. Hot deformation test apparatus, characterized in that include: Oven (1); Support rod (5), the support rod (5) is set at the top of the inner wall of the oven (1); Rotating column (7), the rotating column (7) is set below the support rod (5), and there are two rotating columns (7) arranged opposite each other along the vertical plane where the support rod (5) is located. The rotating column (7) can rotate along its axis. Roller (8), which is sleeved on the rotating column (7), and the roller (8) rotates as the rotating column (7) rotates; An auxiliary mechanism (9) is used to drive the roller (8) to move out of the oven (1) along the axial direction of the rotating column (7).

2. The hot deformation testing apparatus of claim 1, wherein: The auxiliary mechanism (9) includes a base (901), a limiting member (902) is provided at the lower end of the base (901), a servo motor (903) is installed in the middle of the outer wall of the base (901), and a threaded column (904) is fixedly connected to the output end of the servo motor (903). A threaded plate (905) is threadedly connected to the middle of the outer wall of the threaded column (904), and a transmission rod (906) is fixedly connected to both sides of the bottom end of the threaded plate (905). A movable cavity is opened in the middle of the top end of the base (901), and the middle of the threaded plate (905) extends into it. Movable grooves are opened on both sides of the outer wall of the base (901), and the transmission rod (906) extends into them.

3. The heat deformation experimental apparatus according to claim 2, characterized in that: The bottom of the inner wall of the oven (1) is provided with a limiting groove. The limiting member (902) has a "T" shaped structure and the limiting member (902) and the limiting groove of the oven (1) are engaged. The limiting members (902) are evenly distributed. An extension plate (907) is connected to one side of the outer wall of the transmission rod (906).

4. The heat distortion experimental apparatus according to claim 3, characterized in that: The extension plate (907) is internally threaded with a threaded pin (908), and the transmission rod (906) has an internal threaded hole into which the threaded pin (908) extends. The transmission rod (906) has an "L" shaped structure.

5. The heat distortion experimental apparatus according to claim 4, characterized in that: The extension plate (907) has a base (909) welded to the top of its outer wall, and the base (909) has a movable hole in the middle corresponding to the roller (8). The base (909) has a fixed cavity at its bottom end, and the top of the threaded plate (905) extends into it.

6. The heat deformation experimental apparatus according to claim 5, characterized in that: The base (909) is internally slidably connected to a fixing plate (910), and the fixing plate (910) can extend into the movable hole. The fixing plate (910) has an "L" shaped structure.

7. The heat deformation experimental apparatus according to claim 6, characterized in that: It also includes a cleaning mechanism (10), which includes a fixed base (1001), a snap-fit ​​component (1002) and a cleaning sleeve (1003). The fixed base (1001) is welded to both sides of the middle part of the base (909), and the snap-fit ​​component (1002) is snap-fitted inside the fixed base (1001).

8. The heat distortion experimental apparatus according to claim 7, characterized in that: A cleaning sleeve (1003) is fixedly connected to one side of the outer wall of the snap-fit ​​component (1002), and the cleaning sleeve (1003) has an "O" shaped structure. The cleaning sleeve (1003) can be moved along the roller (8) to the fixed seat (1001).

9. The heat distortion experimental apparatus according to claim 8, characterized in that: A support plate (11) is welded to the inner wall of the oven (1) near the support rod (5). The support plate (11) has a support hole inside, and the support rod (5) extends into it. The top of the base (901) has a fixing groove on both sides, and a support seat (12) is engaged inside the fixing groove.

10. The heat deformation experimental apparatus according to claim 9, characterized in that: The bottom of the support base (12) is T-shaped, the top of the support base (12) is arc-shaped, and the support base (12) can assist in supporting the rotating column (7).

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