Digital display melting point instrument for detecting plastic additive

Abstract

The utility model relates to the technical field of melting point measurement, in particular to a digital display melting point instrument for plastic additive detection, which comprises a test board, a heating cylinder, a support, a capillary tube and an observation mechanism, the observation mechanism comprises a mounting rack, a mounting seat, a rotating assembly, a rotating disc, a plurality of connecting rods, a plurality of mounting frames and a plurality of magnifying lenses, when a heating device in a heating cylinder is used for heating a capillary tube, a rotating assembly is started, a rotating disc is driven to rotate at the end of a mounting seat, so that a connecting rod is driven to rotate, a corresponding mounting frame rotates to an observation area, and the melting condition of a plastic additive sample in the capillary tube is observed through a magnifying lens in the mounting frame; through the arrangement of the magnifying lenses, the observation effect is better, the test data is more accurate, and due to the fact that the magnifying lenses are different in magnification, a user can switch the magnifying lenses with different magnification times according to observation requirements, and the observation effect is further improved.

Description

Technical Field

[0001] This utility model relates to the field of melting point determination technology, and in particular to a digital melting point apparatus for detecting plastic additives. Background Art

[0002] Melting point determination of plastic additives is a crucial step in the plastics industry. It is essential for understanding the heat resistance of additives, selecting appropriate processing conditions, and ensuring product quality. While the capillary method is commonly used to determine the melting point of plastic additives, in practice, operators rely on visual observation and reading the melting point from a thermometer. Therefore, human error may occur during temperature data reading.

[0003] To address the above issues, existing technologies use an electrically heated digital melting point apparatus to determine the melting point of plastic additives. By employing a temperature sensor instead of a thermometer in traditional technology, the temperature data can be read without the need for operators, thus avoiding the problem of poor accuracy in the measured melting point value due to human error.

[0004] However, in actual use, the existing electric heating digital display melting point apparatus has a problem: the capillary tube is relatively thin, making it difficult to observe clearly with the naked eye, which leads to deviations in the test data. Utility Model Content

[0005] The purpose of this invention is to provide a digital display melting point apparatus for testing plastic additives, which aims to solve the technical problem that existing electric heating digital display melting point apparatuses have deviations in test data due to the relatively thin capillary tube, making it difficult to observe clearly with the naked eye.

[0006] To achieve the above objectives, this utility model provides a digital melting point apparatus for detecting plastic additives, including a test platform, a heating cylinder, a support, a capillary tube, and an observation mechanism. The heating cylinder is provided at the top of the test platform, and the support is also provided on the upper surface of the test platform. The capillary tube is provided on the support, and the bottom end of the capillary tube is located inside the heating cylinder.

[0007] The observation mechanism includes a mounting frame, a mounting base, a rotating assembly, a rotating disk, multiple connecting rods, multiple mounting frames, and multiple magnifying glasses. An observation area is provided on the heating cylinder. The mounting frame is mounted on the top of the test bench. The mounting base is fixedly mounted on the top of the mounting frame. The rotating disk is rotatably mounted on the end face of the mounting base. The rotating assembly is located inside the mounting base. The output end of the rotating assembly is mechanically driven by the rotating disk. Multiple connecting rods are fixedly mounted on the outer wall of the rotating disk. A mounting frame is fixedly mounted on the end of each connecting rod furthest from the rotating disk. A magnifying glass is mounted on each mounting frame, and each magnifying glass corresponds to the observation area.

[0008] The rotating assembly includes a servo motor, an output shaft, and an output gear. The rotating disk has a driven gear on one side inside the mounting base. The servo motor is installed inside the mounting base. The output shaft is provided at the output end of the servo motor. The output gear is provided at the end of the output shaft away from the servo motor. The output gear meshes with the driven gear.

[0009] The mounting base has a heat dissipation groove that runs through its outer side wall, and the heat dissipation groove corresponds to the servo motor. The mounting base also has a wiring hole that runs through its outer side wall, and the wiring hole corresponds to the servo motor. The number of teeth on the output gear is less than the number of teeth on the driven gear.

[0010] The mounting frame includes a fixed base plate, a support plate, and a mounting plate. The mounting plate is fixedly mounted on one end of the support plate, and the fixed base plate is fixedly mounted on the other end of the support plate. The fixed base plate is connected to the upper surface of the test bench, and the mounting plate is provided with the mounting seat.

[0011] The digital melting point apparatus for detecting plastic additives also includes a cooling fan. A mounting shell is provided on the outer wall of the mounting base. The mounting shell is located outside a portion of the heat dissipation grooves. The cooling fan is located inside the end of the mounting shell away from the mounting base.

[0012] The mounting shell has fixed arc plates on both sides near the mounting base, and the fixed arc plates are detachably connected to the outer wall of the mounting base.

[0013] The mounting housing is provided with a dustproof net at the end away from the mounting base, and the dustproof net is located outside the cooling fan.

[0014] This invention relates to a digital melting point apparatus for detecting plastic additives. When the capillary is heated using the heating device inside the heating cylinder, the rotating assembly is activated, causing the rotating disk to rotate at the end of the mounting base. This, in turn, causes the connecting rod to rotate, positioning the corresponding mounting frame at the observation area. The melting of the plastic additive sample within the capillary is then observed through a magnifying glass within the mounting frame. Compared to direct visual observation, the magnifying glass provides a better observation effect and more accurate test data. Furthermore, since each mounting frame has a different magnification, the user can switch between different magnifications to meet specific observation needs, further enhancing the observation effect. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0016] Figure 1 This is a schematic diagram of the structure of a digital melting point apparatus for detecting plastic additives according to the first embodiment of this utility model.

[0017] Figure 2 This is a schematic diagram of the disassembled structure of the rotating disk and the mounting base in the first embodiment of this utility model.

[0018] Figure 3 This utility model provides Figure 2 A magnified view of the local structure at point A.

[0019] Figure 4 This is a schematic diagram of the disassembled structure of the rotating disk and the mounting base in the second embodiment of this utility model.

[0020] 101-Test stand, 102-Heating cylinder, 103-Bracket, 104-Capillary tube, 105-Mounting base, 106-Rotating disk, 107-Connecting rod, 108-Mounting frame, 109-Magnifying glass, 110-Servo motor, 111-Output shaft, 112-Output gear, 113-Fixed base plate, 114-Support plate, 115-Mounting plate, 116-Observation area, 117-Driven gear, 118-Heat dissipation groove, 119-Wiring hole, 201-Cooling fan, 202-Mounting shell, 203-Fixed arc plate, 204-Dustproof net. DETAILED DESCRIPTION

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0022] First embodiment:

[0023] Please see Figures 1 to 3 ,in Figure 1 This is a schematic diagram of the structure of the digital melting point apparatus for detecting plastic additives according to the first embodiment. Figure 2 This is a schematic diagram of the disassembled structure of the rotating disk and the mounting base in the first embodiment. Figure 3 yes Figure 2 A magnified view of the local structure at point A.

[0024] This utility model provides a digital melting point apparatus for testing plastic additives, comprising a test stage 101, a heating cylinder 102, a support 103, a capillary tube 104, and an observation mechanism. The observation mechanism includes a mounting frame, a mounting base 105, a rotating assembly, a rotating disk 106, multiple connecting rods 107, multiple mounting frames 108, and multiple magnifying glasses 109. The rotating assembly includes a servo motor 110, an output shaft 111, and an output gear 112. The mounting frame includes a fixed base plate 113, a support plate 114, and a mounting plate 115. This solution solves the problem in existing electrically heated digital melting point apparatuses where the capillary tube 104 is relatively thin, making it difficult to observe clearly with the naked eye, leading to deviations in test data. Therefore, this solution can be applied to the structure of an electrically heated digital melting point apparatus for determining the melting point of plastic additives.

[0025] In this specific embodiment, a heating cylinder 102 is provided at the top of the test platform 101, and a support 103 is also provided on the upper surface of the test platform 101. A capillary tube 104 is provided on the support 103, with the bottom end of the capillary tube 104 located inside the heating cylinder 102. The ground plastic additive sample is placed in the clean capillary tube 104, and the capillary tube 104 is installed on the support 103 so that the bottom end of the capillary tube 104 is located inside the heating cylinder 102. The capillary tube 104 is heated by the heating device inside the heating cylinder 102. When the state of the plastic additive sample changes to liquid, the current temperature is detected by the temperature sensor inside the heating cylinder 102 and transmitted to the controller. The controller controls the electronic display screen on the test platform 101 to display the temperature, thereby measuring the melting point value of the plastic additive sample.

[0026] The heating cylinder 102 is provided with an observation area 116. The mounting frame is installed on the top of the test bench 101. The top of the mounting frame is fixedly provided with a mounting base 105. The rotating disk 106 is rotatably mounted on the end face of the mounting base 105. The rotating assembly is provided inside the mounting base 105. The output end of the rotating assembly is mechanically driven by the rotating disk 106. Multiple connecting rods 107 are fixedly provided on the outer wall of the rotating disk 106. The end of each connecting rod 107 away from the rotating disk 106 is fixedly mounted with a mounting frame 108. Each mounting frame 108 is provided with a magnifying glass 109. Each magnifying glass 109 corresponds to the observation area 116. When the heating device inside the heating cylinder 102 is used... When the capillary tube 104 is heated, the rotating assembly is activated, causing the rotating disk 106 to rotate at the end of the mounting base 105, thereby causing the connecting rod 107 to rotate, so that the corresponding mounting frame 108 rotates to the observation area 116. The melting of the plastic additive sample in the capillary tube 104 is observed through the magnifying glass 109 in the mounting frame 108. Compared with direct observation with the naked eye, the setting of the magnifying glass 109 makes the observation effect better and the test data more accurate. Furthermore, since the magnification of the magnifying glass 109 set on each mounting frame 108 is different, the user can switch between different magnifications of the magnifying glass 109 according to the observation needs, further improving the observation effect.

[0027] Secondly, the rotating disk 106 has a driven gear 117 on one side inside the mounting base 105. The servo motor 110 is installed inside the mounting base 105. The output end of the servo motor 110 is provided with the output shaft 111. The end of the output shaft 111 away from the servo motor 110 is provided with the output gear 112. The output gear 112 meshes with the driven gear 117. When the servo motor 110 is started, the output gear 112 is driven to rotate through the output shaft 111. Since the output gear 112 meshes with the driven gear 117, the rotating disk 106 is driven to rotate at the end of the mounting base 105.

[0028] Meanwhile, a heat dissipation groove 118 is provided through the outer wall of the mounting base 105. The heat dissipation groove 118 corresponds to the servo motor 110. The heat dissipation groove 118 allows the outside air to circulate with the interior of the mounting base 105, and the flowing air dissipates heat from the servo motor 110. A wiring hole 119 is also provided through the outer wall of the mounting base 105. The wiring hole 119 corresponds to the servo motor 110, and the wiring of the servo motor 110 is completed through the wiring hole 119. Since the number of teeth of the output gear 112 is less than the number of teeth of the driven gear 117, the driven gear 117 reduces the output speed, making it easier for the magnifying glass 109 to be aligned with the observation area 116.

[0029] In addition, the mounting plate 115 is fixedly installed at one end of the support plate 114, and the fixed base plate 113 is fixedly installed at the other end of the support plate 114. The fixed base plate 113 is connected to the upper surface of the test platform 101. The mounting seat 105 is provided on the mounting plate 115. Both the fixed base plate 113 and the mounting plate 115 are fixedly connected to the support plate 114. When manufacturing the mounting frame, it is made using an integral molding technology, resulting in a more robust structure.

[0030] When using a digital melting point apparatus for detecting plastic additives according to this embodiment, the ground plastic additive sample is placed in the clean capillary 104, and the capillary 104 is mounted on the support 103 such that the bottom end of the capillary 104 is located inside the heating cylinder 102. The capillary 104 is heated by the heating device inside the heating cylinder 102. When the state of the plastic additive sample changes to liquid, the current temperature is detected by the temperature sensor inside the heating cylinder 102 and transmitted to the controller. The controller controls the electronic display screen on the test stage 101 to display the temperature, thereby measuring the melting point value of the plastic additive sample. Furthermore, when the capillary 104 is heated by the heating device inside the heating cylinder 102... During heating, the rotating assembly is activated, causing the rotating disk 106 to rotate at the end of the mounting base 105, thereby rotating the connecting rod 107. This causes the corresponding mounting frame 108 to rotate to the observation area 116. The melting of the plastic additive sample in the capillary 104 is observed through the magnifying glass 109 inside the mounting frame 108. Compared to direct observation with the naked eye, the magnifying glass 109 provides better observation results and more accurate test data. Furthermore, since the magnification of the magnifying glass 109 on each mounting frame 108 is different, users can switch between different magnifications of the magnifying glass 109 according to their observation needs, further improving the observation effect.

[0031] Second embodiment:

[0032] Based on the first embodiment, please refer to Figure 4 , Figure 4 This is a schematic diagram of the disassembled structure of the rotating disk and the mounting base in the second embodiment.

[0033] This utility model provides a digital display melting point apparatus for detecting plastic additives, which also includes a cooling fan 201.

[0034] In this specific embodiment, a mounting shell 202 is provided on the outer side wall of the mounting base 105. The mounting shell 202 is located outside a portion of the heat dissipation groove 118. The cooling fan 201 is provided inside the end of the mounting shell 202 away from the mounting base 105. The cooling fan 201 accelerates the airflow between the outside air and the mounting base 105, resulting in better heat dissipation for the servo motor 110.

[0035] The mounting shell 202 is provided with fixing arc plates 203 on both sides of the end near the mounting base 105. The fixing arc plates 203 are detachably connected to the outer side wall of the mounting base 105. The mounting shell 202 is installed by setting the fixing arc plates 203.

[0036] Secondly, a dustproof net 204 is provided at the end of the mounting shell 202 away from the mounting base 105. The dustproof net 204 is located outside the cooling fan 201. The dustproof net 204 filters dust in the air and prevents too much dust from entering the interior of the mounting base 105.

[0037] When using the digital melting point apparatus for detecting plastic additives according to this embodiment, the cooling fan 201 accelerates the airflow between the outside air and the mounting base 105, resulting in better heat dissipation for the servo motor 110. Furthermore, the dust filter 204 filters out dust from the air, preventing excessive dust from entering the interior of the mounting base 105.

[0038] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A digital melting point apparatus for detecting plastic additives, comprising a test stage, a heating cylinder, a support, and a capillary tube, wherein the heating cylinder is disposed at the top of the test stage, the support is further disposed on the upper surface of the test stage, the capillary tube is disposed on the support, and the bottom end of the capillary tube is located inside the heating cylinder, characterized in that, It also includes observation agencies; The observation mechanism includes a mounting frame, a mounting base, a rotating assembly, a rotating disk, multiple connecting rods, multiple mounting frames, and multiple magnifying glasses. An observation area is provided on the heating cylinder. The mounting frame is mounted on the top of the test bench. The mounting base is fixedly mounted on the top of the mounting frame. The rotating disk is rotatably mounted on the end face of the mounting base. The rotating assembly is located inside the mounting base. The output end of the rotating assembly is mechanically driven by the rotating disk. Multiple connecting rods are fixedly mounted on the outer wall of the rotating disk. A mounting frame is fixedly mounted on the end of each connecting rod furthest from the rotating disk. A magnifying glass is mounted on each mounting frame, and each magnifying glass corresponds to the observation area.

2. The digital melting point apparatus for detecting plastic additives as described in claim 1, characterized in that, The rotating assembly includes a servo motor, an output shaft, and an output gear. The rotating disk has a driven gear on one side inside the mounting base. The servo motor is installed inside the mounting base. The output shaft is provided at the output end of the servo motor. The output gear is provided at the end of the output shaft away from the servo motor. The output gear meshes with the driven gear.

3. The digital melting point apparatus for detecting plastic additives as described in claim 2, characterized in that, A heat dissipation groove is provided through the outer wall of the mounting base, and the heat dissipation groove corresponds to the servo motor. A wiring hole is also provided through the outer wall of the mounting base, and the wiring hole corresponds to the servo motor. The number of teeth of the output gear is less than the number of teeth of the driven gear.

4. The digital melting point apparatus for detecting plastic additives as described in claim 3, characterized in that, The mounting frame includes a fixed base plate, a support plate, and a mounting plate. The mounting plate is fixedly mounted on one end of the support plate, and the fixed base plate is fixedly mounted on the other end of the support plate. The fixed base plate is connected to the upper surface of the test bench, and the mounting plate is provided with the mounting seat.

5. The digital melting point apparatus for detecting plastic additives as described in claim 3, characterized in that, The digital melting point apparatus for detecting plastic additives also includes a cooling fan. A mounting shell is provided on the outer wall of the mounting base. The mounting shell is located outside a portion of the heat dissipation groove. The cooling fan is located inside the end of the mounting shell away from the mounting base.

6. The digital melting point apparatus for detecting plastic additives as described in claim 5, characterized in that, The mounting shell has fixed arc plates on both sides near the mounting base, and the fixed arc plates are detachably connected to the outer wall of the mounting base.

7. The digital melting point apparatus for detecting plastic additives as described in claim 6, characterized in that, A dustproof net is also provided at the end of the mounting housing away from the mounting base, and the dustproof net is located outside the cooling fan.

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