Thermal deformation vicat softening point testing equipment

Abstract

The embodiment of the utility model provides a thermal deformation vicat softening point testing device, which comprises a heating box used for accommodating a heat transfer medium capable of heating plastic to be tested; the testing assembly is used for abutting against the to-be-tested plastic and testing the Vicat softening point of the to-be-tested plastic; the liquid cooling mechanism is at least partially arranged in the heating box and can be in contact with the heat transfer medium; the air cooling mechanism comprises an air guide shell and a fan, the air guide shell is arranged on the periphery of the heating box, an air path is formed between the air guide shell and the outer wall of the heating box, and the fan communicates with the air path and is used for providing airflow for the air path. An air guide shell of the air cooling mechanism is arranged on the periphery of the heating box, an air path is formed between the air guide shell and the outer wall of the heating box, a draught fan of the air cooling mechanism provides airflow for the air path, the airflow can flow along the air path and exchange heat with the heating box, the liquid cooling mechanism arranged in the heating box is matched to cool a heat transfer medium at the same time, and the cooling efficiency is high; and the test efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of plastic heat deformation testing technology, and in particular to a heat deformation Vicat softening point testing device. Background Technology

[0002] The Vicat softening point is one of the indicators for evaluating the heat resistance of materials and reflecting the physical and mechanical properties of thermoplastic products under heated conditions. The Vicat softening temperature is the temperature at which a thermoplastic sample is pressed 1 mm into a 1 square millimeter indenter under a predetermined load and a constant rate of temperature rise of the heat transfer medium within a liquid heat transfer medium.

[0003] In related technologies, heat distortion Vicat softening point testing equipment is typically used to test the Vicat softening point of plastics. Before the next test, this equipment requires cooling the liquid heat transfer medium to a predetermined temperature. However, existing heat distortion Vicat softening point testing equipment has unsatisfactory cooling efficiency for the liquid heat transfer medium, resulting in low testing efficiency. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a heat deformation Vicat softening point testing device, which has high cooling efficiency for the heat transfer medium and can improve testing efficiency.

[0005] This utility model provides a heat distortion Vicat softening point testing device, which includes: a heating chamber for containing a heat transfer medium that can heat the plastic to be tested; a testing component for contacting the plastic to be tested and testing its Vicat softening point; a liquid cooling mechanism, at least partially disposed within the heating chamber and in contact with the heat transfer medium; and an air cooling mechanism including an air guide shell and a fan. The air guide shell is disposed on the outer periphery of the heating chamber and forms an air passage between it and the outer wall of the heating chamber. The fan is connected to the air passage and provides airflow to the air passage.

[0006] The heat distortion Vicat softening point testing device provided by this utility model has at least the following beneficial effects:

[0007] By setting up air-cooling and liquid-cooling mechanisms, the air guide shell of the air-cooling mechanism is located on the outer periphery of the heating box, forming an air passage between it and the outer wall of the heating box. The fan of the air-cooling mechanism provides airflow to the air passage, and the airflow can flow along the air passage and exchange heat with the heating box. Together with the liquid-cooling mechanism located in the heating box, it cools the heat transfer medium, resulting in high cooling efficiency and improved testing efficiency.

[0008] In one embodiment of this implementation, the outer wall of the heating box includes a side wall and a bottom wall, the air guide shell includes a side plate and a bottom plate, a first chamber is formed between the side plate and the side wall, a second chamber is formed between the bottom plate and the bottom wall, and the first chamber and the second chamber are connected to form the air passage.

[0009] In one embodiment of this implementation, a first air vent is formed between the top of the side plate and the side wall, a second air vent is provided on the bottom plate, and the fan is connected to the second air vent.

[0010] In one embodiment of this implementation, the heat distortion Vicat softening point testing device includes a fixed frame, the top of which is connected to the heating box. There are multiple side plates, each of which is installed on the outer periphery of the fixed frame and forms multiple independent first air vents by surrounding the side wall and the top of the fixed frame.

[0011] In one embodiment of this implementation, the base plate is installed on the bottom side of the fixed frame, and the second air vent is opened in the middle of the base plate.

[0012] In one embodiment of this implementation, the fixed frame includes multiple longitudinal beams and multiple transverse beams. The top ends of the longitudinal beams are connected to the heating box, and the transverse beams are connected to the bottom ends of two adjacent longitudinal beams. The two ends of the side plate in the horizontal direction are respectively connected to the corresponding longitudinal beams.

[0013] In one embodiment of this implementation, the longitudinal beam includes a first connecting plate and a second connecting plate, the first connecting plate and the second connecting plate are connected and intersect to form an included angle, and the first connecting plate and the second connecting plate are respectively connected to different side plates.

[0014] In one embodiment of this implementation, the airflow flows in from the first vent, passes through the first chamber and the second chamber in sequence, and flows out from the second vent. In the direction of airflow flow, the distance between the sidewall and the side plate gradually increases.

[0015] In one embodiment of this implementation, the relative position of the side plate and the side wall in the vertical direction is adjustable to adjust the cross-sectional size of the first air vent.

[0016] In one embodiment of this implementation, the heat distortion Vicat softening point testing device includes a base, the base having an installation chamber, an installation opening and a vent, the heating box being located at the installation opening and extending into the installation chamber, the air duct communicating with the installation chamber, and the vent communicating with the installation chamber.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0019] Figure 1 This is a three-dimensional structural schematic diagram of a heat deformation Vicat softening point testing device according to one embodiment of this utility model;

[0020] Figure 2 yes Figure 1 A three-dimensional structural diagram of the heating box, air-cooling mechanism, and related components;

[0021] Figure 3 yes Figure 1 A cross-sectional structural diagram of the heating box, air-cooling mechanism, and related components;

[0022] Figure 4 yes Figure 1 A schematic diagram of the heating box, fixed frame, and air guide shell in their disassembled state;

[0023] Figure 5 yes Figure 1 A three-dimensional structural diagram of the fixed frame.

[0024] Figure label:

[0025] Heat distortion Vicat softening point testing equipment 100; heating chamber 10; side wall 101; bottom wall 102; chamber base 11; chamber body 12; testing component 20; liquid cooling mechanism 30; air cooling mechanism 40; air guide shell 41; side plate 411; strip hole 4111; base plate 412; fan 42; air guide cover 43; base 50; mounting opening 501; ventilation opening 502; heating pipe 60; fixed frame 70; longitudinal beam 71; first connecting plate 711; second connecting plate 712; crossbeam 72; fixing hole 701; motor 80; air passage 90; first chamber 91; second chamber 92; first air outlet 93; second air outlet 94. Detailed Implementation

[0026] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0027] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0029] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0030] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] Please see Figures 1 to 3 , Figure 1 This is a three-dimensional structural schematic diagram of the heat deformation Vicat softening point testing device 100 according to one embodiment of the present invention; Figure 2 yes Figure 1 A three-dimensional structural diagram of the heating box 10, the air-cooling mechanism 40, and related components; Figure 3 yes Figure 1A cross-sectional view of the heating chamber 10, the air-cooling mechanism 40, and related components is provided in this embodiment of the invention. The heat distortion Vicat softening point testing device 100 includes a heating chamber 10, a testing component 20, a liquid cooling mechanism 30, and an air-cooling mechanism 40. The heating chamber 10 is used to contain a heat transfer medium that can heat the plastic to be tested. The testing component 20 is used to contact the plastic to be tested and test its Vicat softening point. At least a portion of the liquid cooling mechanism 30 is disposed within the heating chamber 10 and can contact the heat transfer medium. The air-cooling mechanism 40 includes an air guide shell 41 and a fan 42. The air guide shell 41 is disposed on the outer periphery of the heating chamber 10 and forms an air passage 90 between it and the outer wall of the heating chamber 10. The fan 42 is connected to the air passage 90 and is used to provide airflow to the air passage 90.

[0032] Specifically, the liquid cooling mechanism 30 includes a liquid cooling pipe that extends into the heating chamber 10 and meanders around the bottom of the chamber to fully immerse it in the heat transfer medium. The liquid cooling pipe is used to introduce a cooling medium, which removes heat from the heat transfer medium, achieving a cooling effect. The heat distortion Vicat softening point testing device 100 includes a heating pipe 60 that extends into the heating chamber 10 and is located on top of the liquid cooling pipe. The heating pipe 60 is used to heat the heat transfer medium. The heat transfer medium can be oil.

[0033] In this embodiment, the heat distortion Vicat softening point testing device 100 has four testing stations, each equipped with a testing component 20 to test the corresponding plastic to be tested. The testing component 20 carries the plastic to be tested and extends into the heating chamber 10 to ensure heat transfer between the heat transfer medium and the plastic. The testing component 20 can abut against the plastic and apply a predetermined load. After the heat transfer medium heats the plastic, the testing component 20 reads the current temperature after the deformation of the plastic reaches a preset value to obtain the Vicat softening point of the plastic. The heat distortion Vicat softening point testing device 100 includes a motor 80, which is used to stir the heat transfer medium within the heating chamber 10 to ensure uniform temperature distribution of the heat transfer medium.

[0034] By setting up an air-cooling mechanism 40 and a liquid-cooling mechanism 30, the air guide shell 41 of the air-cooling mechanism 40 is located on the outer periphery of the heating box 10 and forms an air passage 90 between it and the outer wall of the heating box 10. The fan 42 of the air-cooling mechanism 40 provides airflow to the air passage 90. The airflow can flow along the air passage 90 and exchange heat with the heating box 10. Together with the liquid-cooling mechanism 30 located in the heating box 10, the heat transfer medium is cooled, resulting in high cooling efficiency and improved testing efficiency.

[0035] In one embodiment of this implementation, please refer to Figure 1The heat distortion Vicat softening point testing device 100 includes a base 50, which has an installation chamber (not shown), an installation opening 501, and a vent 502. A heating chamber 10 is located at the installation opening 501 and extends into the installation chamber. An air duct 90 communicates with the installation chamber, and the vent 502 also communicates with the installation chamber. This arrangement helps reduce space occupation, and the air duct 90 can exchange gases with the outside environment through the vent 502, allowing the airflow to continuously cool the heating chamber 10.

[0036] In this embodiment, there are multiple vents 502, which are arranged on different sides of the base 50 to improve airflow efficiency. The fan 42 and the air guide shell 41 are connected by an air guide cover 43, and the fan 42 is installed on the inner wall of the base 50.

[0037] In one embodiment of this implementation, please refer to Figure 2 and Figure 3 The outer wall of the heating chamber 10 includes a side wall 101 and a bottom wall 102. The air guide shell 41 includes a side plate 411 and a bottom plate 412. A first chamber 91 is formed between the side plate 411 and the side wall 101, and a second chamber 92 is formed between the bottom plate 412 and the bottom wall 102. The first chamber 91 and the second chamber 92 are connected to form an air passage 90. With this arrangement, the airflow can exchange heat with the side wall 101 and the bottom wall 102, which is beneficial to improving the cooling efficiency of the heat transfer medium.

[0038] In one embodiment of this implementation, please refer to Figure 2 and Figure 3 A first air vent 93 is formed between the top of the side plate 411 and the side wall 101, and a second air vent 94 is provided on the bottom plate 412. The fan 42 is connected to the second air vent 94. Specifically, the top of the side plate 411 and the side wall 101 are spaced apart, thus forming the first air vent 93. By forming the first air vent 93 between the top of the side plate 411 and the side wall 101, airflow can flow vertically along the side wall 101 to obtain a larger heat exchange area, which is beneficial to improving the cooling efficiency of the heat transfer medium.

[0039] In this embodiment, the distance between the top of the side plate 411 and the side wall 101 is 1mm-3mm to increase the airflow velocity at the first air vent 93, thereby improving the airflow circulation efficiency and cooling efficiency, while avoiding the problem of airflow difficulty at the first air vent 93.

[0040] In one embodiment of this implementation, please refer to Figure 2 and Figure 3 Airflow enters from the first vent 93, passes through the first chamber 91 and the second chamber 92 in sequence, and exits from the second vent 94. In the direction of airflow, the distance between the side wall 101 and the side plate 411 gradually increases.

[0041] Specifically, the distance between the sidewall 101 and the sideplate 411 gradually increases in the direction near the base plate 412. In this embodiment, the sideplate 411 is located on a vertical plane, and the sidewall 101 is inclined relative to the vertical plane to form a first chamber 91 with a gradually increasing cross-sectional area in the direction near the base plate 412. It can be understood that setting the distance between the sidewall 101 and the sideplate 411 to gradually increase in the direction of airflow can make the airflow have better flow efficiency, which is conducive to the airflow fully exchanging heat with the heating box 10 to cool the heat transfer medium.

[0042] In one embodiment of this implementation, please refer to Figure 2 and Figure 4 , Figure 4 yes Figure 1 The diagram shows the structure of the heating box 10, the fixed frame 70, and the air guide shell 41 in their disassembled state. The relative position of the side plate 411 and the side wall 101 in the vertical direction is adjustable to adjust the cross-sectional size of the first air outlet 93. Specifically, the side plate 411 has a strip-shaped hole 4111 extending in the vertical direction, and the side wall 101 has a fixing hole 701. The heat deformation Vicat softening point testing device 100 includes fasteners (not shown), which pass through the strip-shaped hole 4111 and cooperate with the fixing hole 701 to fix the side plate 411 on the fixed frame 70. It is understandable that if the cross-section of the first air outlet 93 is too large, the air velocity of the first air outlet 93 will be too low; if the cross-section of the first air outlet 93 is too small, it will be difficult for airflow to enter and exit, neither of which is conducive to achieving stable and rapid heat dissipation. By setting the relative positions of the side plate 411 and the side wall 101 in the vertical direction to be adjustable, and by gradually increasing the spacing between the side wall 101 and the side plate 411 in the direction of airflow, the cross-section of the first air outlet 93 can be adjusted, which is beneficial to improving applicability.

[0043] In one embodiment of this implementation, please refer to Figure 3 and Figure 4The heat distortion Vicat softening point testing device 100 includes a fixed frame 70, the top of which is connected to a heating chamber 10. Multiple side plates 411 are installed on the outer periphery of the fixed frame 70, forming multiple independent first air vents 93 with the side wall 101 and the top of the fixed frame 70. Specifically, the top of the fixed frame 70 is connected to the outer side of the heating chamber 10 in the horizontal direction, and the side plates 411 are installed on the side of the fixed frame 70 facing away from the heating chamber 10 in the horizontal direction, so that the side plates 411, the fixed frame 70, and the heating chamber 10 enclose and form the first air vents 93. Each side plate 411 encloses the fixed frame 70 and the heating chamber 10 to form a corresponding first air vent 93. In this embodiment, there are four first air vents 93 and four side plates 411. In other embodiments, the number of first air vents 93 and side plates 411 may also be different.

[0044] By setting multiple side plates 411 to enclose the top of the side wall 101 and the fixed frame 70 respectively to form multiple independent first air vents 93, airflow can flow in or out from multiple first air vents 93 at the same time, ensuring the flow efficiency of airflow. At the same time, by installing multiple side plates 411 on the fixed frame 70, the installation and removal of multiple side plates 411 are relatively easy, so as to facilitate the modification of existing equipment.

[0045] Understandably, when the existing equipment has low cooling efficiency for the heat transfer medium, resulting in unsatisfactory testing efficiency, the air-cooling mechanism 40 can be installed on the existing equipment through the fixed frame 70 to improve the testing efficiency of the existing equipment.

[0046] In one embodiment of this implementation, please refer to Figure 3 and Figure 4 The base plate 412 is installed on the bottom side of the fixed frame 70, and the second air vent 94 is opened in the middle of the base plate 412. With this arrangement, the airflow travels approximately the same distance from each of the first air vents 93 to the second air vent 94, which is beneficial for sufficient heat dissipation from the heating box 10.

[0047] In one embodiment of this implementation, please refer to Figure 3 and Figure 4The fixed frame 70 includes multiple longitudinal beams 71 and multiple transverse beams 72. The top ends of the longitudinal beams 71 are connected to the heating box 10, and the bottom ends of two adjacent longitudinal beams 71 are connected to each other in the horizontal direction. The two ends of the side plate 411 are connected to the corresponding longitudinal beams 71. Specifically, the multiple transverse beams 72 are connected end to end to form an "U" shape. The top ends of the longitudinal beams 71 are connected to the heating box 10 and the side plate 411 on both sides in the horizontal direction to form a first air vent 93. In addition, two adjacent longitudinal beams 71 are attached to the two sides of the side plate 411 in the horizontal direction, and the transverse beams 72 are attached to the bottom ends of the side plate 411 to jointly form a first chamber 91 with the side wall 101. By setting multiple longitudinal beams 71 and multiple transverse beams 72 in the fixed frame 70, a hollow structure is formed, which can be respectively enclosed with each side plate 411 and each side wall 101 of the heating box 10 to form a first chamber 91 and a first air vent 93 connected to the first chamber 91. The structure is relatively simple and the cost is low.

[0048] In one embodiment of this implementation, please refer to Figure 4 and Figure 5 , Figure 5 yes Figure 1 A three-dimensional structural diagram of the fixed frame 70 is provided. The longitudinal beam 71 includes a first connecting plate 711 and a second connecting plate 712. The first connecting plate 711 and the second connecting plate 712 are connected and intersect to form an included angle. The first connecting plate 711 and the second connecting plate 712 are respectively connected to different side plates 411. This arrangement allows for simultaneous connection of the longitudinal beam 71 to two side plates 411, resulting in a relatively simple structure and low cost.

[0049] Specifically, the first connecting plate 711 and the second connecting plate 712 intersect to form a 90-degree angle. In this embodiment, among two adjacent longitudinal beams 71, the first connecting plate 711 of one longitudinal beam 71 and the second connecting plate 712 of the other longitudinal beam 71 are opposite each other. The side plate 411 is installed on one side of the first connecting plate 711 in the horizontal direction and on the other side of the second connecting plate 712 in the horizontal direction, thereby completing the installation of the side plate 411. With this arrangement, the installation and disassembly of the side plate 411 are relatively simple, and the structure of the fixing frame 70 is relatively simple.

[0050] In this embodiment, the fixed frame 70 and the heating box 10 are connected together by welding. In other embodiments, the fixed frame 70 and the heating box 10 can also be connected together by bolts, screws or other connectors to facilitate assembly and disassembly.

[0051] In this embodiment, the heating box 10 includes a base 11 and a body 12. The base 11 is connected to the base 50 and is a U-shaped frame surrounding the top side of the body 12, with the body 12 overlapping the inner side of the base 11. The top end of the longitudinal beam 71 is connected to the side of the base 11 facing away from the body 12 in the horizontal direction, thus defining the first air vent 93 and the first chamber 91 together with the side plate 411. This arrangement facilitates the installation of the heating box 10 and the formation of the first air vent 93 and the second chamber 92.

[0052] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A heat distortion Vicat softening point testing device, characterized in that, include: A heating chamber for containing a heat transfer medium that can heat the plastic to be tested; A test component for contacting the plastic to be tested and testing the Vicat softening point of the plastic to be tested; The liquid cooling mechanism is at least partially located inside the heating chamber and can come into contact with the heat transfer medium; The air-cooling mechanism includes an air guide shell and a fan. The air guide shell is disposed on the outer periphery of the heating box and forms an air passage between it and the outer wall of the heating box. The fan is connected to the air passage and is used to provide airflow to the air passage.

2. The heat distortion Vicat softening point testing device according to claim 1, characterized in that, The outer wall of the heating box includes a side wall and a bottom wall, and the air guide shell includes a side plate and a bottom plate. A first chamber is formed between the side plate and the side wall, and a second chamber is formed between the bottom plate and the bottom wall. The first chamber and the second chamber are connected to form the air passage.

3. The heat distortion Vicat softening point testing device according to claim 2, characterized in that, A first air vent is formed between the top of the side plate and the side wall, and a second air vent is provided on the bottom plate. The fan is connected to the second air vent.

4. The heat distortion Vicat softening point testing device according to claim 3, characterized in that, The heat distortion Vicat softening point testing equipment includes a fixed frame, the top of which is connected to the heating box. There are multiple side plates, which are installed on the outer periphery of the fixed frame and form multiple independent first air vents with the side wall and the top of the fixed frame, respectively.

5. The heat distortion Vicat softening point testing device according to claim 4, characterized in that, The base plate is installed on the bottom side of the fixed frame, and the second air vent is opened in the middle of the base plate.

6. The heat distortion Vicat softening point testing device according to claim 4, characterized in that, The fixed frame includes multiple longitudinal beams and multiple transverse beams. The top of the longitudinal beams is connected to the heating box, and the transverse beams are connected to the bottom of two adjacent longitudinal beams. The two ends of the side plate in the horizontal direction are respectively connected to the corresponding longitudinal beams.

7. The heat distortion Vicat softening point testing device according to claim 6, characterized in that, The longitudinal beam includes a first connecting plate and a second connecting plate, which are connected and intersect to form an included angle. The first connecting plate and the second connecting plate are respectively connected to different side plates.

8. The heat distortion Vicat softening point testing device according to claim 3, characterized in that, The airflow enters from the first vent, passes through the first chamber and the second chamber in sequence, and exits from the second vent. In the direction of airflow, the distance between the sidewall and the side plate gradually increases.

9. The heat distortion Vicat softening point testing device according to claim 8, characterized in that, The relative position of the side plate and the side wall in the vertical direction is adjustable to adjust the cross-sectional size of the first air vent.

10. The heat distortion Vicat softening point testing device according to claim 1, characterized in that, The heat distortion Vicat softening point testing equipment includes a base, which has an installation chamber, an installation opening, and a vent. The heating box is located at the installation opening and extends into the installation chamber. The air duct is connected to the installation chamber, and the vent is connected to the installation chamber.

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