Melt index tester for plastic production

Abstract

The utility model relates to the technical field of melt index testers, and discloses a melt index tester for plastic production, which comprises a fixed base, one side of the upper surface of the fixed base is fixedly connected with an operating table, the other side of the upper surface of the fixed base is fixedly connected with a stand column, a funnel is arranged below the operating table, and the stand column is fixedly connected with the operating table. A heating tank is arranged above the stand column, a gradienter is arranged on one side of the outer wall of the heating tank, a feeding pipe is fixedly connected to the top of the heating tank, a discharging pipe is arranged on one side of the bottom of the heating tank, and a scraping assembly is arranged on the upper surface of the heating tank. According to the utility model, the inner wall of the heating tank is subjected to scraping treatment through the scraping ring, and the toothed transmission belt is utilized to drive the scraping plate to rotate to clean the bottom of the heating tank, so that molten plastic residues are effectively avoided, the cleaning efficiency of equipment is improved, the cleaning time is shortened, the test accuracy is improved, and the service life of the equipment is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to melt index tester technical field especially relates to a melt index tester for plastic production. BACKGROUND

[0002] The melt index tester is a key equipment for measuring the melt flowability of plastics, playing an important role in plastic production and quality detection. The melt index is a main parameter for evaluating the flow performance of thermoplastic plastics, directly affecting the processing technology of plastics and the quality of final products. Therefore, the melt index tester is widely used in plastic production enterprises, scientific research institutions and quality inspection departments to ensure the stability and controllability of plastic materials in subsequent processing. The equipment is usually composed of a heating system, an extrusion mechanism, a measuring device, etc. By heating the plastic sample to a certain temperature and extruding the molten plastic under a specified load, the flow rate per unit time is measured.

[0003] Most existing melt index testers use a fixed heating tank structure, relying on heating pipes or electric heating plates to heat the plastic sample, allowing it to melt and flow out through a nozzle, and recording data with sensors or manual measuring devices. The device usually has a piston rod or a push rod to control the extrusion rate of the molten plastic, thus calculating the melt index value. In addition, some devices are equipped with an automatic feeding system and precise temperature control device to improve the stability of the test and the accuracy of the data. After the test is completed, the residual molten plastic in the heating tank needs to be cleaned manually or with auxiliary tools to prevent the residual material from affecting subsequent tests. However, due to the high viscosity and solidification characteristics of the molten plastic, the cleaning process is usually tedious, affecting the efficiency of the device.

[0004] During the melt index test, the molten plastic adheres to the inner wall and bottom of the heating tank. If not thoroughly cleaned, it will accumulate residual material, affecting the accuracy of subsequent tests and possibly reducing the service life of the device. Currently, most devices rely on manual scraping or simple cleaning tools for processing, which is inefficient and difficult to ensure complete removal of residual material. After long-term use, the accumulation of residual plastic may affect the temperature uniformity of the heating tank, thus affecting the stability of the test results. Therefore, how to improve the cleaning efficiency of the device, reduce the cleaning time, and ensure the accuracy of the test and the long-term stable operation of the device is a problem that needs to be solved in the existing technology. SUMMARY

[0005] In order to make up for the above shortcomings, the utility model provides a melt index tester for plastic production, aims at improving the existing equipment usually relies on manual scraping or with the help of simple cleaning tools to handle, cleaning efficiency is lower, and it is difficult to ensure that the problem of completely removing the residual, after long -term use, the accumulation of residual plastics may affect the temperature uniformity of the heating tank, and then affect the stability of test result.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: a melt index tester for plastic production, including fixed base, the upper surface one side of fixed base is fixedly connected with operation platform, the upper surface other side of fixed base is fixedly connected with stand, the lower portion of operation platform is provided with hopper, the upper portion of stand is provided with heating tank, the outer wall one side of heating tank is provided with level meter, the top of heating tank is fixedly connected with inlet pipe, the bottom one side of heating tank is provided with discharge pipe, the upper surface of heating tank is provided with scraping assembly,

[0007] The scraping assembly includes a motor, the outer wall of the motor is fixedly connected to the upper surface of the heating tank, the output end of the motor is fixedly connected with a reciprocating screw rod, the outer wall of the reciprocating screw rod is threadedly connected with a threaded sleeve, the outer wall of the threaded sleeve is fixedly connected with a scraping ring, one end of the scraping ring is slidably connected with a guide column, and the bottom of the reciprocating screw rod is provided with a cleaning assembly.

[0008] Further, the cleaning assembly includes a toothed transmission belt, one end of the toothed transmission belt is arranged at the bottom of the reciprocating screw rod, the other end of the toothed transmission belt is provided with a scraping plate, and the lower surface of the scraping plate is attached to the inner wall of the heating tank.

[0009] Further, the inside of the stand is rotatably connected with a driving ring, the inner wall of the driving ring is fixedly connected with a threaded column, the outer wall of the threaded column is threadedly connected with an extension sleeve, the outer wall of the extension sleeve is fixedly connected with a limiting plate, the top of the extension sleeve is provided with an adaptive assembly, and the adaptive assembly is used to push the heating tank to deviate.

[0010] Further, the adaptive assembly includes a rotating seat, the lower surface of the rotating seat is fixedly connected to the top of the extension sleeve, the inside of the rotating seat is slidably connected with a movable ball, and the upper surface of the movable ball is fixedly connected to the lower surface of the heating tank.

[0011] Further, the outer wall of the guide column is fixedly connected in the heating tank, and the guide column is used for guiding the scraping ring.

[0012] Further, the outer walls of the threaded sleeve and the scraping ring are slidably connected to the inner wall of the heating tank, and the scraping ring is used for cleaning the inner wall of the heating tank.

[0013] Further, the outer wall of the extension sleeve is slidingly connected in the interior of the stand column, and the extension sleeve is used to drive the rotating seat to move.

[0014] Further, the outer wall of the limiting plate is slidingly connected in the interior of the stand column, and the limiting plate is used to limit the extension sleeve.

[0015] The utility model has the advantages of the following:

[0016] 1. In the utility model, the material on the inner wall of the heating tank is scraped by the scraping ring, the scraping plate is driven to rotate by the toothed transmission belt, the bottom of the heating tank is cleaned, the residual molten plastic is effectively avoided, the cleaning efficiency of the equipment is improved, the cleaning time is reduced, the accuracy of the test and the service life of the equipment are improved.

[0017] 2. In the utility model, the threaded column is driven to rotate in the interior of the extension sleeve by the driving ring, and the guiding effect of the limiting plate is combined, the extension sleeve drives the rotating seat to move up and down, the height of the movable ball is adjusted, the horizontal adjustment of the heating tank is realized, the intuitive reference is provided by the level meter, the equipment can be quickly adjusted to the horizontal state, and the stability and accuracy of the test process are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A three-dimensional structure schematic view of a melt index tester for plastic production is provided for the utility model;

[0019] Figure 2 A heating tank internal structure schematic view of a melt index tester for plastic production is provided for the utility model;

[0020] Figure 3 A stand column internal structure schematic view of a melt index tester for plastic production is provided for the utility model.

[0021] LEGEND:

[0022] 1, fixed base; 2, operation table; 3, stand column; 4, hopper; 5, heating tank; 6, level meter; 7, discharge pipe; 8, inlet pipe; 9, motor; 10, reciprocating screw; 11, threaded sleeve; 12, scraping ring; 13, toothed transmission belt; 14, scraping plate; 15, driving ring; 16, threaded column; 17, extension sleeve; 18, limiting plate; 19, rotating seat; 20, movable ball; 21, guide column. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0024] With reference to Figure 1 And Figure 2 An embodiment provided by the utility model: a melt index tester for plastic production, including fixed base 1, the upper surface of fixed base 1 one side is fixedly connected with operation table 2, the upper surface of fixed base 1 the other side is fixedly connected with stand 3, the lower of operation table 2 is provided with hopper 4, the top of stand 3 is provided with heating tank 5, the outer wall of heating tank 5 one side is provided with level 6, the top of heating tank 5 is fixedly connected with inlet pipe 8, the bottom of heating tank 5 one side is provided with discharge pipe 7, the upper surface of heating tank 5 is provided with scraping assembly, and the scraping assembly is used to clean the inner side wall of heating tank 5;

[0025] Scraping assembly includes motor 9, the outer wall of motor 9 is fixedly connected on the upper surface of heating tank 5, the output end of motor 9 is fixedly connected with reciprocating screw rod 10, the outer wall of reciprocating screw rod 10 is threadedly connected with threaded sleeve 11, the outer wall of threaded sleeve 11 is fixedly connected with scraping ring 12, one end of scraping ring 12 is slidably connected with guide column 21, the bottom of reciprocating screw rod 10 is provided with cleaning assembly, and the cleaning assembly is used to clean the bottom of heating tank 5, and the cleaning assembly includes toothed transmission belt 13, one end of toothed transmission belt 13 is arranged at the bottom of reciprocating screw rod 10, the other end of toothed transmission belt 13 is provided with scraping plate 14, and the lower surface of scraping plate 14 is attached to the inner wall of heating tank 5.

[0026] Specifically, the inner wall of heating tank 5 is scraped by scraping ring 12, and scraping ring 12 moves up and down along the inner wall of heating tank 5 under the drive of reciprocating screw rod 10, so that the molten plastic residues adhered to the inner wall of heating tank 5 can be effectively removed, and the rotation of reciprocating screw rod 10 further drives toothed transmission belt 13 to run, and the other end of toothed transmission belt 13 is connected with scraping plate 14, so that scraping plate 14 rotates around its own axis, thereby scraping and cleaning the bottom of heating tank 5, which not only ensures that the inner wall and the bottom of heating tank 5 can be fully cleaned, but also reduces the workload of manual cleaning, avoids the influence of plastic residues on the accuracy of melt index test, and further, the automatic cleaning mode reduces the dirt accumulated during the long-term use of the equipment, improves the service life of the equipment, and enables the equipment to maintain good working condition in the high-frequency production test environment.

[0027] With reference to Figure 1 AndFigure 3 The inside of the stand 3 is rotationally connected with a driving ring 15, the inner wall of the driving ring 15 is fixedly connected with a threaded column 16, the outer wall of the threaded column 16 is threadedly connected with an extension sleeve 17, the outer wall of the extension sleeve 17 is fixedly connected with a limiting plate 18, the top of the extension sleeve 17 is provided with an adaptive assembly, the adaptive assembly is used for offsetting the heating tank 5, the adaptive assembly comprises a rotating seat 19, the lower surface of the rotating seat 19 is fixedly connected to the top of the extension sleeve 17, the inside of the rotating seat 19 is slidably connected with a movable ball 20, the upper surface of the movable ball 20 is fixedly connected to the lower surface of the heating tank 5, the outer wall of a guide column 21 is fixedly connected to the inside of the heating tank 5, the guide column 21 is used for guiding the scraping ring 12, the outer wall of the scraping ring 12 is slidably connected to the inner wall of the heating tank 5, the scraping ring 12 is used for cleaning the inner wall of the heating tank 5, the outer wall of the extension sleeve 17 is slidably connected to the inside of the stand 3, the extension sleeve 17 is used for driving the rotating seat 19 to move, and the outer wall of the limiting plate 18 is slidably connected to the inside of the stand 3, the limiting plate 18 is used for limiting the extension sleeve 17.

[0028] Specifically, the threaded column 16 is rotated in the extension sleeve 17 by the driving ring 15, the up-down movement of the extension sleeve 17 is realized by the threaded connection between the threaded column 16 and the extension sleeve 17, so as to indirectly drive the rotating seat 19 to adjust the height in the vertical direction, at the same time, the movement direction of the extension sleeve 17 is accurately guided by the limiting plate 18, so as to ensure that it will not deviate during the adjustment process, and the stability and controllability of the overall adjustment are ensured, when the height of the rotating seat 19 changes, the movable ball 20 connected thereto synchronously rises and falls, so as to drive the heating tank 5 to adjust horizontally, in addition, the device is equipped with a level 6, the operator can accurately adjust the angle of the heating tank 5 according to the indication of the level 6, so that it quickly reaches the horizontal state, not only improves the operation convenience of the device, but also ensures the stability of the heating tank 5 during the melt index test, avoids the uneven melting of the plastic or the data measurement deviation due to the inclination of the device, and further improves the accuracy and reliability of the test.

[0029] Working principle: when the plastic production melt index tester is needed, first, the plastic material is sent to the inside of the heating tank 5 through the inlet pipe 8, then heated and melted through the heater at the bottom of the heating tank 5, and finally discharged through the discharge pipe 7. In addition, the driving motor 9 drives the reciprocating screw rod 10 to rotate, and cooperates with the threaded relationship between the reciprocating screw rod 10 and the threaded sleeve 11, so that the threaded sleeve 11 drives the scraping ring 12 to move up and down with the rotation of the reciprocating screw rod 10, and at the same time, the other end of the scraping ring 12 is guided by the guide column 21, so that the inner wall of the heating tank 5 can be scraped by the scraping ring 12. In this process, the rotation of the reciprocating screw rod 10 can also drive the toothed transmission belt 13 to run, and then drive the scraping plate 14 to rotate through the other end of the toothed transmission belt 13, so as to clean the bottom of the inner wall of the heating tank 5, thereby realizing efficient cleaning.

[0030] In addition, the driving ring 15 drives the threaded column 16 to rotate in the inside of the extension sleeve 17, cooperates with the threaded relationship between the threaded column 16 and the extension sleeve 17, and the guide of the limiting plate 18, so that the extension sleeve 17 drives the rotating seat 19 to move up and down with the rotation of the threaded column 16, so as to drive the movable ball 20 to move through the rotating seat 19, thereby realizing the adjustment of the heating tank 5, and cooperating with the level 6 on one side to make it can be adjusted to horizontal.

[0031] Finally, it should be pointed out that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing embodiments of the present application have been described in detail, for those skilled in the art, it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A melt index tester for plastic production comprising a fixed base (1), characterized in that: The upper surface of the fixed base (1) is fixedly connected with an operating table (2), the other side of the upper surface of the fixed base (1) is fixedly connected with a stand (3), the lower part of the operating table (2) is provided with a hopper (4), the upper part of the stand (3) is provided with a heating tank (5), the outer wall of the heating tank (5) is provided with a level (6), the top of the heating tank (5) is fixedly connected with a feeding pipe (8), the bottom of the heating tank (5) is provided with a discharging pipe (7), the upper surface of the heating tank (5) is provided with a scraping assembly. The scraping assembly comprises an electric motor (9), the outer wall of the electric motor (9) is fixedly connected with the upper surface of the heating tank (5), the output end of the electric motor (9) is fixedly connected with a reciprocating screw rod (10), the outer wall of the reciprocating screw rod (10) is threadedly connected with a threaded sleeve (11), the outer wall of the threaded sleeve (11) is fixedly connected with a scraping ring (12), one end of the scraping ring (12) is slidably connected with a guide column (21), and the bottom of the reciprocating screw rod (10) is provided with a cleaning assembly.

2. The melt index tester for plastic production according to claim 1, characterized in that: The cleaning assembly comprises a toothed transmission belt (13), one end of the toothed transmission belt (13) is arranged at the bottom of the reciprocating screw rod (10), the other end of the toothed transmission belt (13) is provided with a scraping plate (14), and the lower surface of the scraping plate (14) is attached to the inner wall of the heating tank (5).

3. The melt index tester for plastic production of claim 1, wherein: The inner part of the stand (3) is rotatably connected with a driving ring (15), the inner wall of the driving ring (15) is fixedly connected with a threaded column (16), the outer wall of the threaded column (16) is threadedly connected with an extension sleeve (17), the outer wall of the extension sleeve (17) is fixedly connected with a limiting plate (18), the top of the extension sleeve (17) is provided with an adaptive assembly, and the adaptive assembly is used for pushing the heating tank (5) to deviate.

4. The melt index tester for plastic production according to claim 3, characterized in that: The lower surface of the rotating seat (19) is fixedly connected with the top of the extension sleeve (17), the inner part of the rotating seat (19) is slidably connected with a movable ball (20), and the upper surface of the movable ball (20) is fixedly connected with the lower surface of the heating tank (5).

5. The melt index tester for plastic production of claim 1, wherein: The outer wall of the guide column (21) is fixedly connected in the inner part of the heating tank (5), and the guide column (21) is used for guiding the scraping ring (12).

6. The melt index tester for plastic production of claim 1, wherein: The outer walls of the threaded sleeve (11) and the scraping ring (12) are slidably connected with the inner wall of the heating tank (5), and the scraping ring (12) is used for cleaning the inner wall of the heating tank (5).

7. The melt index tester for plastic production according to claim 4, characterized in that: The outer wall of the extension sleeve (17) is slidably connected in the inner part of the stand (3), and the extension sleeve (17) is used for driving the rotating seat (19) to move.

8. The melt index tester for plastic production according to claim 3, characterized in that: The outer wall of the limiting plate (18) is slidably connected in the inner part of the stand (3), and the limiting plate (18) is used for limiting the extension sleeve (17).

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