Melt flow rate instrument

Abstract

The utility model relates to the technical field of laboratory testing equipment, in particular to a melt flow rate meter, which is characterized in that a first rotating table and a second rotating table are arranged on a base, a material storage box is arranged on the first rotating table, and a material pressing rod and a material cleaning rod are arranged on the second rotating table. Then, a second rotating table is driven to drive a first linear driving source / pressing rod to rotate, in the rotating process, the side face of the pressing rod is connected with a storage box in a pressed mode and drives the storage box to rotate to the position away from the upper portion of the discharging pipe, so that the pressing rod can directly face the discharging pipe, and after use, the second rotating table is driven to rotate; and the second linear driving source drives the material cleaning rod to penetrate into the blanking pipe so as to clean the blanking pipe, so that the melt flow rate instrument disclosed by the utility model is simple to operate, and the material pressing rod, the material cleaning rod and the material storage box are integrally designed with the base, so that the material pressing rod, the material cleaning rod and the material storage box do not need to be stored additionally.

Description

Technical Field

[0001] The utility model relates to the technical field of laboratory testing equipment, in particular to a melt flow rate instrument. Background Art

[0002] The melt flow rate tester is mainly used to measure the melt mass flow rate (MFR) and melt volume flow rate (MVR) of thermoplastic resin. In the production process of plastic rice, it is necessary to measure the melt flow rate of plastic rice. As an important basis for selecting processing materials and grades, it can make the selected materials better adapt to the requirements of the processing technology and improve the reliability and quality of plastic rice in molding.

[0003] The existing melt flow rate meter has an extrusion cylinder fixed above the feeding tube, and the pressing rod and the cleaning rod are detachably installed with the extrusion cylinder. When in use, the hopper should be placed on the feeding tube first to facilitate feeding, and then the hopper should be removed, and then the pressing rod should be installed at the lower end of the extrusion cylinder. The pressing rod is driven down by the extrusion cylinder and penetrated into the feeding tube to apply pressure to the melt. After the test is completed, the pressing rod should be removed and replaced with the cleaning rod to clean the feeding tube. It can be seen that the operation is extremely cumbersome, and the pressing rod, the cleaning rod and the hopper are all split designs, which need to be stored separately and are easy to lose. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a melt flow rate meter, comprising:

[0005] Pedestal;

[0006] A detection body is fixedly arranged on the base, and a vertical feeding pipe is arranged on the detection body;

[0007] A first rotating platform is arranged on the base, and a material storage box is arranged on the first rotating platform, and the material storage box extends from one side of the first rotating platform to the top of the feeding pipe;

[0008] A second rotating platform is arranged on the base and above the first rotating platform, and a first linear driving source and a second linear driving source are arranged on the side of the second rotating platform. The lower end of the first linear driving source is connected to a material pressing rod, and the lower end of the second linear driving source is connected to a material clearing rod;

[0009] The first linear drive source / the second linear drive source can rotate with the second rotating table to the side of the pressing rod / the clearing rod to press the storage box, and push the first rotating table to rotate, so that the storage box is away from the top of the discharge pipe and the pressing rod / the clearing rod moves to the top of the discharge pipe.

[0010] In some possible embodiments, a first operating handle and a first operating button are installed on the side of the first linear drive source, and the first operating button is used to control the opening and closing of the first linear drive source; a second operating handle and a second operating button are installed on the side of the second linear drive source, and the second operating button is used to control the opening and closing of the second linear drive source.

[0011] In some possible embodiments, a positioning groove is provided at the lower end of the first linear drive source, magnetic fixing structures are provided on opposite sides of the positioning groove, the pressing rod is made of a strong magnetic material, and a positioning protrusion matching the positioning groove is provided at the upper end of the pressing rod.

[0012] In some possible embodiments, a fixed rotating shaft is disposed on the base, and the first rotating platform and the second rotating platform are both sleeved on the fixed rotating shaft and can rotate forward and reversely along the axis of the fixed rotating shaft.

[0013] In some possible embodiments, a return torsion spring is provided on the first rotating platform, and when the material storage box is not blocked by the pressing rod / the clearing rod, the return torsion spring can drive the first rotating platform to rotate to a position where the material storage box is located directly above the discharge pipe.

[0014] In some possible embodiments, the material storage box is hinged on the first rotating table, and a drop opening is provided at one end of the material storage box close to the drop pipe. The lower end of the drop opening is connected to the drop pipe, and the material storage box can be rotated along the hinge point relative to the first rotating table until the drop pipe penetrates into the drop pipe.

[0015] In some possible embodiments, the bottom of the material storage box is inclined and the material discharge port is located at a high position on the bottom of the material storage box. A counterweight block is also provided at one end of the material storage box away from the discharge pipe.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The utility model arranges a first rotating table and a second rotating table on a base, a material storage box is arranged on the first rotating table, and a pressing rod and a cleaning rod are arranged on the second rotating table. When in use, material can be added from the material storage box to a feeding tube, and then the second rotating table is driven to drive the first linear driving source / pressing rod to rotate. During the rotation, the side of the pressing rod is pressed against the material storage box and drives the material storage box to rotate to an upper position away from the feeding tube, so that the pressing rod can face the feeding tube. After use, the second rotating table is driven to rotate again, so that the pressing rod is away from the feeding tube and the cleaning rod faces the feeding tube, and the second linear driving source drives the cleaning rod to penetrate into the feeding tube to clean the feeding tube. It can be seen that the melt flow rate meter of the utility model is simple to operate, and the pressing rod, the cleaning rod and the material storage box are all integrally designed with the base and do not need to be stored separately. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 It is a three-dimensional structural diagram of the melt flow rate meter of the embodiment of the utility model;

[0020] Figure 2 It is a cross-sectional schematic diagram of the press rod part of the embodiment of the utility model;

[0021] Figure 3 It is a cross-sectional schematic diagram of the material storage box part of the embodiment of the utility model.

[0022] Description of Figure Numbers:

[0023] Base 10, fixed shaft 11;

[0024] Detection body 20, feeding pipe 21;

[0025] The first rotating table 30, the material storage box 31, the material drop opening 311, the material drop pipe 312, and the counterweight block 313;

[0026] The second rotating table 40, the first linear driving source 41, the pressing rod 411, the first operating handle 412, the first operating button 413, the positioning groove 414, the magnetic fixing structure 415, the positioning protrusion 416, the second linear driving source 42, the clearing rod 421, the second operating handle 422, and the second operating button 423. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0028] Reference Figure 1A melt flow rate meter shown in the figure includes a base 10, on which a detection body 20, a first rotating table 30 and a second rotating table 40 are arranged from bottom to top. The detection body 20 can adopt a conventional design structure and model in the industry, which usually includes a feed pipe 21, a heating device (not shown) and a scraper (not shown). There are many mature solutions for the specific design and connection method of these structures in the industry. The improvement points of the present application are not in these structures, so they are not repeated. A storage box 31 is arranged on the first rotating table 30. The storage box 31 extends from one side of the first rotating table 30 to the top of the feeding tube 21, and the two sides of the second rotating table 40 are respectively provided with a first linear driving source 41 and a second linear driving source 42, the output end of the first linear driving source 41 is connected to a pressing rod 411, and the output end of the second linear driving source 42 is connected to a clearing rod 421; when in use, the material to be tested can be first stored on the storage box 31, and the storage box 31 can be rotated with the first rotating table 30 to face the feeding tube 21, and the staff can add the material in the storage box 31 to the feeding tube 21 Then, the staff drives the second rotating table 40 to rotate, and the pressing rod 411 and the cleaning rod 421 rotate with the second rotating table 40, wherein the pressing rod 411 rotates toward the direction close to the feeding tube 21 and presses the side of the storage box 31, thereby pushing the first rotating table 30 / storage box 31 to rotate to give way to the pressing rod 411, so that the pressing rod 411 can face the feeding tube 21, and start the first linear driving source 41 to make the pressing rod 411 descend and penetrate into the feeding tube 21, thereby applying a certain pressure to the material in the feeding tube 21 to adjust the melt flow rate. The melt flow rate meter of the present application is easy to operate. After the material storage box 31 is added with materials and the press rod 411 is reset, it can be rotated relative to the base 10 and away from the top of the discharge tube 21 without separate operation, so as to make way for subsequent operations.

[0029] In some possible embodiments, a first operating handle 412 and a first operating button 413 are installed on the side of the first linear drive source 41. The staff can drive the second rotating table 40 to rotate by the first operating handle 412, and the first operating button 413 is used to control the opening and closing of the first linear drive source 41; a second operating handle 422 and a second operating button 423 are installed on the side of the second linear drive source 42. The staff can also drive the second rotating table 40 to rotate by the second operating handle 422, and the second operating button 423 is used to control the opening and closing of the second linear drive source 42. In this embodiment, the first operating button 413 is set on the side of the first linear drive source 41, and the second operating button 423 is set on the side of the second linear drive source 42. The staff can intuitively know the control buttons corresponding to the drive source, and the control buttons of the driving source in operation are located directly in front of the staff for easy operation.

[0030] In some possible embodiments, reference Figure 2 As shown, a positioning groove 414 is provided at the lower end of the first linear drive source 41, and a magnetic fixing structure 415 is provided on the opposite sides of the positioning groove 414. The magnetic fixing structure 415 can be a permanent magnet. The pressing rod 411 is made of a strong magnetic material, and the upper end of the pressing rod 411 is provided with a positioning protrusion 416 that matches the positioning groove 414. In this embodiment, the pressing rod 411 and the output end of the first linear drive source 41 are detachably connected. The purpose is to facilitate the staff to remove the pressing rod 411 for cleaning. After cleaning, the pressing rod 411 needs to be installed back to the output end of the first linear drive source 41 to avoid loss.

[0031] In some possible implementations, a fixed rotating shaft 11 is provided on the base 10, and the first rotating table 30 and the second rotating table 40 are both sleeved on the fixed rotating shaft 11. The first rotating table 30 and the second rotating table 40 are two independently operating components, that is, the first rotating table 30 and the second rotating table 40 can independently rotate forward and reverse along the axis of the fixed rotating shaft 11. In this embodiment, in order to compress the height dimension of the entire rate meter, the first rotating table 30 is configured to be a flat plate.

[0032] In some possible embodiments, the staff can push the storage box 31 / the first rotating table 30 to rotate so that the storage box 31 is facing the discharge pipe 21. In order to make the operation easier, a reset torsion spring (not shown) can also be set on the first rotating table 30. In the initial state, the storage box 31 is facing the discharge pipe 21. After the storage box 31 is subjected to the pressure of the pressing rod 411 / the clearing rod 421, it can rotate with the first rotating table 30 to deviate from the discharge pipe 21. After the pressing rod 411 / the clearing rod 421 cancels its pressure on the storage box 31, the storage box 31 / the first rotating table 30 and the elastic restoring force of the reset torsion spring rotate autonomously until the storage box 31 is facing the discharge pipe 21. It should be noted that in order to ensure the stability of the pressing rod 411 / the clearing rod 421 during operation, the torsion of the reset torsion spring needs to be limited to drive the first rotating table 30 to rotate but not drive the second rotating table 40 to rotate.

[0033] In some possible embodiments, reference Figure 3 As shown, the material storage box 31 is hinged on the first rotating platform 30, and a material drop opening 311 is provided at one end of the material storage box 31 close to the material discharge pipe 21, and the lower end of the material drop opening 311 is connected to the material discharge pipe 312. When adding materials, a person manually presses the end of the material storage box 31 close to the material discharge pipe 21 to rotate the material storage box 31 relative to the first rotating platform 30 until the material drop pipe 312 is inserted into the material discharge pipe 21. Adding materials in sequence can ensure that there is no leakage, and the operation is convenient; further, the bottom of the material storage box 31 is inclined and the material drop opening 311 is located at the material storage box 3 1, a counterweight block 313 is further provided at one end of the material storage box 31 away from the material discharge pipe 21. Under normal circumstances, the end of the material storage box 31 with the counterweight block 313 is heavier to make the material discharge pipe 312 away from the material discharge pipe 21. The material storage box 31 is pressed manually to rotate the material storage box 31, which is convenient for the staff to move the material in the material storage box 31 from the material discharge port 311 into the material discharge pipe 21. After the material is added, the material storage box 31 is manually released / slowly released, and the material storage box 31 can be rotated relative to the first rotating platform 30 to make the material discharge pipe 312 away from the material discharge pipe 21.

[0034] It should be noted that the first linear drive source 41 and the second linear drive source 42 of all the above-mentioned embodiments can adopt conventional designs and models in the industry, which can usually be linear cylinders or linear electric cylinders, wherein the pressing rod 411 needs to apply a stable downward pressure to the material in the feeding pipe 21, so the first linear drive source 41 adopts a driving element with a voltage stabilizing function.

[0035] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A melt flow rate meter, characterized in that: include: Base (10); A detection body (20) is fixedly arranged on the base (10), and a vertical feeding pipe (21) is arranged on the detection body (20); A first rotating platform (30) is arranged on the base (10), and a material storage box (31) is arranged on the first rotating platform (30), and the material storage box (31) extends from one side of the first rotating platform (30) to the top of the feeding pipe (21); A second rotating platform (40) is arranged on the base (10) and is located above the first rotating platform (30); a first linear driving source (41) and a second linear driving source (42) are arranged on a side of the second rotating platform (40) and are spaced apart from each other; the lower end of the first linear driving source (41) is connected to a material pressing rod (411), and the lower end of the second linear driving source (42) is connected to a material clearing rod (421); The first linear drive source (41) / the second linear drive source (42) can rotate with the second rotating table (40) to the side of the pressing rod (411) / the clearing rod (421) to press the storage box (31), and push the first rotating table (30) to rotate, so that the storage box (31) is away from the top of the discharge pipe (21) and the pressing rod (411) / the clearing rod (421) is moved to face the discharge pipe (21).

2. A melt flow rate meter according to claim 1, characterized in that, A first operating handle (412) and a first operating button (413) are installed on the side of the first linear drive source (41), and the first operating button (413) is used to control the opening and closing of the first linear drive source (41); a second operating handle (422) and a second operating button (423) are installed on the side of the second linear drive source (42), and the second operating button (423) is used to control the opening and closing of the second linear drive source (42).

3. A melt flow rate meter according to claim 1, characterized in that, A positioning groove (414) is provided at the lower end of the first linear drive source (41), and magnetic fixing structures (415) are provided on opposite sides of the positioning groove (414). The pressing rod (411) is made of a strong magnetic material, and a positioning protrusion (416) matching the positioning groove (414) is provided at the upper end of the pressing rod (411).

4. A melt flow rate meter according to claim 1, characterized in that: The base (10) is provided with a fixed rotating shaft (11), and the first rotating platform (30) and the second rotating platform (40) are both sleeved on the fixed rotating shaft (11) and can rotate forward and reverse along the axis of the fixed rotating shaft (11).

5. A melt flow rate meter according to claim 1, characterized in that: A return torsion spring is arranged on the first rotating table (30). When the material storage box (31) is not blocked by the pressing rod (411) / the clearing rod (421), the return torsion spring can drive the first rotating table (30) to rotate to a position where the material storage box (31) is located directly above the discharge pipe (21).

6. A melt flow rate meter according to claim 1, characterized in that: The material storage box (31) is hinged on the first rotating table (30), and a material drop opening (311) is provided at one end of the material storage box (31) close to the material drop pipe (21). The lower end of the material drop opening (311) is connected to the material drop pipe (312). The material storage box (31) can be rotated along the hinge point relative to the first rotating table (30) until the material drop pipe (312) penetrates into the material drop pipe (21).

7. A melt flow rate meter according to claim 6, characterized in that: The bottom of the material storage box (31) is arranged at an angle and the material drop opening (311) is located at a high position at the bottom of the material storage box (31). One end of the material storage box (31) away from the material drop pipe (21) is also provided.

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