Melt flow rate measuring device

Abstract

The utility model discloses a melt flow rate measuring device which comprises a machine base and a control device, a smelting furnace box is arranged on the machine base, a door plate is arranged on one side of the smelting furnace box, a feeding port and a discharging port are formed in the smelting furnace box, the feeding port is communicated with a charging barrel arranged in the smelting furnace box, and the discharging port is communicated with a discharging port arranged in the smelting furnace box. A discharging opening is formed in the bottom of the charging barrel, a mouth mold is arranged at the bottom of the charging barrel, a material cutting device is arranged below the discharging opening, a material disc is arranged below the material cutting device, and a pressure sensing unit is arranged below the material disc; and the weight mechanism is used for extruding the melt. And the bottom of the charging barrel adopts a replaceable conical mouth mold design, so that mouth molds with different sizes can be replaced according to the test requirements of different plastic materials, and the universality and the flexibility of the device are enhanced. In addition, the fixture is adopted, so that the charging barrel is simple and quick to fix and replace, and the testing efficiency is improved. And the charging barrel and the mouth mold are easy to detach, so that the charging barrel and the mouth mold are convenient to clean and maintain.

Description

Technical Field

[0001] The utility model belongs to the technical field of plastic processing and material testing, and particularly relates to a melt flow rate measuring device. Background Art

[0002] In the plastics processing industry, melt flow rate (MFR) is a crucial parameter for measuring the flow properties of plastic materials. It directly impacts the processability, formability, and quality of finished products. While some automated MFR measuring devices are currently available on the market, most suffer from complex structures, high maintenance costs, and inconvenient operation. Replacing and cleaning the barrel and die, in particular, often requires significant time and effort, impacting testing efficiency and the continued use of the equipment. Therefore, it is crucial to develop a MFR measuring device that is simple in structure, easy to operate, flexible enough to adapt to diverse testing needs, and easy to maintain. Utility Model Content

[0003] The purpose of the utility model is to provide a melt flow rate testing device that can solve the above problems.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A melt flow rate measuring device comprises a machine base and a control device arranged on the machine base, wherein a furnace box is provided on the machine base, a heating unit is provided inside the furnace box, a door panel for opening the aluminum melting box is provided on one side of the furnace box, and the door panel is sealed and connected to the furnace box; a feed port is provided on the top of the furnace box, a discharge port is provided at the bottom of the furnace box, the feed port is communicated with a barrel, the barrel is vertically arranged in the furnace box, a replaceable die is provided at the bottom of the barrel, the die is arranged at the position of the discharge port, a cutting device is provided below the discharge port, a material tray is provided below the cutting device, a pressure sensing unit is provided below the material tray, the pressure sensing unit and the heating unit are both communicatively connected to the control device; and a weight mechanism for extruding the melt is also included.

[0006] Preferably, a plurality of clamps for fixing the barrel are provided in the furnace box.

[0007] Preferably, the die is conical in shape.

[0008] Preferably, the bottom surface of the barrel is provided with threads, and the die is connected to the bottom thread of the barrel.

[0009] Preferably, a funnel device is provided at the position of the feed port.

[0010] Preferably, the weight mechanism includes a pressure rod for inserting into the barrel, a support provided on the pressure rod, and a weight provided on the support.

[0011] Preferably, the feed end of the barrel is arranged in the feed port.

[0012] Preferably, the cutting device includes a cutting knife and a drive motor connected to the cutting knife.

[0013] The present invention offers the following advantages: a replaceable conical die at the bottom of the barrel allows for replacement of dies of varying sizes to meet the testing requirements of different plastic materials, enhancing the device's versatility and flexibility. Furthermore, the use of a clamp simplifies and swifts the securing and replacement of the barrel, improving testing efficiency. The barrel and die are easily disassembled, facilitating cleaning and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Among them: machine base 1, control device 2, furnace box 3, door panel 4, feed port 5, discharge port 6, barrel 7, feed end 71, die 8, cutting device 9, cutting knife 91, drive motor 92, material tray 10, pressure sensing unit 11, weight mechanism 12, pressure rod 121, support 122, weight 123, clamp 13, funnel device 14. DETAILED DESCRIPTION

[0016] The technical solution of the present utility model will be further described in detail below in conjunction with specific implementation methods.

[0017] like Figure 1As shown, the present invention provides a melt flow rate measuring device, which includes a machine base 1 and a control device 2 arranged on the machine base 1. A furnace box 3 is provided on the machine base 1. A heating unit (not shown) is provided inside the furnace box 3 to heat and melt the plastic sample in the furnace box 3. The heating unit is in communication with the control device 2, and the temperature inside the furnace box 3 is adjusted by the control device 2. A door panel 4 is provided on one side of the furnace box 3 for opening the aluminum melting box 3. The door panel 4 is sealed to the furnace box 3. A feed port 5 is provided on the top of the furnace box 3. The feed port 5 is connected to a barrel 7. The barrel 7 is vertically arranged in the furnace box 3. A funnel device 14 is provided at the position of the feed port 5 to facilitate the feeding of plastic pellets into the barrel 7 at the feed port 5 so that they can be melted in the barrel. A replaceable die 8 is provided at the bottom of the barrel 7. The bottom surface of the barrel 7 is provided with threads, and the die 8 is threadedly connected to the bottom of the barrel 7, making the process of replacing the die 8 simpler and more convenient, reducing maintenance costs. A discharge port 6 is provided at the bottom of the furnace box 3, and the die 8 is positioned at the discharge port 6. The die 8 is conical in shape, and the size of the die 8 can be adjusted to meet the testing requirements of different plastics. A cutting device 9 is provided below the discharge port 6. The cutting device 9 is a cutting knife 91 for cutting the plastic sample extruded from the discharge port 6. The cutting knife 91 is connected to a drive motor 92. A material tray 10 is provided below the cutting device 9 for collecting the cut sample. A pressure sensing unit 11 (such as an electronic scale) is provided below the material tray 10 for weighing the cut sample. The pressure sensing unit 11 is communicatively connected to the control device 2. The present invention further comprises a weight mechanism 12 for extruding the plastic melt. The weight mechanism 12 comprises a pressing rod 121 for inserting into the barrel 7 , a supporting tray 122 disposed on the pressing rod 121 , and a weight 123 disposed on the supporting tray 122 .

[0018] Furthermore, the feeding end 71 of the barrel 7 is arranged in the feeding port 5. A plurality of clamps 13 for fixing the barrel 7 are arranged in the furnace box 3. The clamps 13 are clamps or clamps that can clamp the barrel 7.

[0019] When using the present invention, the door panel 4 of the furnace box 3 is opened, the feed end 71 of the barrel 7 is inserted into the feed port 5, and the upper and lower positions are adjusted so that the die 8 is aligned with the discharge port 6. The barrel 7 is then clamped with the clamp 8 and fixed vertically within the furnace box 3. Plastic pellets are fed into the barrel 7 using the funnel device 14. The furnace box 3 melts the plastic, and the molten plastic is extruded from the discharge port 6 via the weight mechanism 12. The cutting device 9 cuts the plastic, and the material tray 10 receives the material. The cut sample is then weighed by the pressure sensing unit 11 to measure the melt flow rate of the plastic sample. After the measurement is completed, the door panel is opened again, the barrel is removed from the clamp, and it is taken out for cleaning, which makes cleaning more convenient.

[0020] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0021] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A melt flow rate measuring device, comprising a base and a control device disposed on the base, characterized in that: A furnace box is provided on the machine base, a heating unit is provided inside the furnace box, a door panel for opening the furnace box is provided on one side of the furnace box, and the door panel is sealed to the furnace box; a feed port is provided on the top of the furnace box, a discharge port is provided at the bottom of the furnace box, the feed port is communicated with a barrel, the barrel is vertically provided in the furnace box, a replaceable die is provided at the bottom of the barrel, the die is provided at the position of the discharge port, a cutting device is provided below the discharge port, a material tray is provided below the cutting device, a pressure sensing unit is provided below the material tray, the pressure sensing unit and the heating unit are both communicatively connected to the control device; and a weight mechanism for extruding the melt is also included.

2. The melt flow rate measuring device according to claim 1, characterized in that: A plurality of clamps for fixing the barrel are arranged in the furnace box.

3. The melt flow rate measuring device according to claim 1, characterized in that : The shape of the die is conical.

4. The melt flow rate measuring device according to claim 2, characterized in that: The bottom surface of the barrel is provided with threads, and the die is connected to the bottom of the barrel via the threads.

5. The melt flow rate measuring device according to claim 1, characterized in that: A funnel device is provided at the position of the feed port.

6. The melt flow rate measuring device according to claim 1, characterized in that: The weight mechanism includes a pressure rod for inserting into the barrel, a supporting tray arranged on the pressure rod, and a weight arranged on the supporting tray.

7. The melt flow rate measuring device according to claim 1, characterized in that: The feeding end of the barrel is arranged in the feeding port.

8. The melt flow rate measuring device according to claim 1, characterized in that: The cutting device comprises a cutting knife and a driving motor connected to the cutting knife.

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