Melt index tester

Abstract

The utility model discloses a melt index tester which comprises a tester main body, the outer wall of a charging barrel is in sliding sleeve connection with the tester main body, a heating coil for heating the charging barrel is arranged in the tester main body, the bottom of the charging barrel is connected with a mold outlet, a piston assembly is arranged in the charging barrel, and the piston assembly is arranged in the charging barrel. The piston assembly is used for extruding molten materials in the charging barrel to be discharged, the fixed lantern ring fixedly sleeves the top of the outer wall of the charging barrel, the fixed lantern ring is slidably clamped to the top of the tester main body, and the handle assembly is arranged on the side of the fixed lantern ring. According to the utility model, the tester main body, the charging barrel, the fixed lantern ring, the piston assembly and the handle assembly are matched for use, under the action of the handle, the limiting block and the locking rod, the stability of the connecting plate and the fixed lantern ring mounted on the tester main body can be ensured, the locking rod is driven by the handle to be separated from the limiting block, and the charging barrel can be directly taken out; and therefore, the charging barrel is detached and cleaned.

Description

Technical Field

[0001] This utility model relates to the field of measuring instruments, and in particular to a melt flow index measuring instrument. Background Technology

[0002] A melt flow indexer is an instrument used to determine the melt flow rate of thermoplastic plastics. Under a certain temperature and load, a thermoplastic plastic sample is placed in a barrel. After a specified heating time, the plastic sample is extruded through a standard die under the pressure of a piston. The mass or volume of plastic extruded per unit time is measured to obtain the melt mass flow rate or melt volume flow rate.

[0003] After the test, the instrument's heating system and power are turned off, and the barrel, die, piston rod, and other components are cleaned for the next test. However, the filling barrel of the existing melt flow indexer is usually directly installed on the melt flow indexer. The filling barrel, which is fixed on the melt flow indexer, affects its cleaning efficiency and is not convenient to disassemble and clean, thus having certain defects. Utility Model Content

[0004] The purpose of this invention is to provide a melt flow index tester to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a melt flow indexer, comprising:

[0006] Main body of the measuring instrument;

[0007] A filling barrel, the outer wall of which is slidably sleeved with the main body of the measuring instrument, a heating coil for heating the filling barrel is installed inside the main body of the measuring instrument, and a mold outlet is connected to the bottom of the filling barrel;

[0008] A piston assembly is disposed inside the loading barrel and is used to squeeze the molten material inside the loading barrel to discharge it.

[0009] A fixing collar is fixedly sleeved on the top of the outer wall of the filling barrel, and the fixing collar is slidably engaged with the top of the measuring instrument body;

[0010] A handle assembly, wherein the handle assembly is disposed on the side of the retaining collar.

[0011] Preferably, the piston assembly includes:

[0012] Piston plate, the outer wall of which is slidably sleeved with the loading barrel;

[0013] A shaft, the bottom of which is fixedly connected to a piston plate.

[0014] Preferably, the piston assembly further includes:

[0015] A limiting cover, which is slidably sleeved on the outside of the shaft, and the limiting cover is slidably engaged with the top of the inner cavity of the filling barrel;

[0016] A support collar, which is fixedly sleeved on the outside of the shaft;

[0017] A weight block is slidably sleeved on the top of the outer wall of the shaft, and the weight block is located on the top of the support collar.

[0018] Preferably, the handle assembly includes:

[0019] A connecting plate, which is fixedly connected to the side of the fixing collar;

[0020] A handle, which is slidably disposed on the outside of the connecting plate.

[0021] Preferably, the handle assembly further includes:

[0022] A limiting block, the bottom of which is fixedly connected to the main body of the measuring instrument, is located on the side of the connecting plate;

[0023] A locking rod, one end of which is fixedly connected to a handle, and the outer wall of the locking rod is slidably inserted into and sleeved with a limiting block.

[0024] Preferably, the handle assembly further includes:

[0025] A limiting frame, which is fixedly connected to the top of the connecting plate;

[0026] A guide plate is slidably sleeved inside the limiting frame, and the end of the guide plate is fixedly connected to the handle.

[0027] Preferably, the handle assembly further includes:

[0028] A fixing rod is fixedly connected inside the limiting frame, and the outer wall of the fixing rod is slidably inserted into the guide plate.

[0029] A limiting spring is slidably sleeved on the outside of the fixed rod, and one end of the limiting spring is pressed and fitted against the guide plate.

[0030] The technical effects and advantages of this utility model are as follows:

[0031] This utility model utilizes the combined use of the measuring instrument body, the filling barrel, the fixing collar, the piston assembly, and the handle assembly. The handle assembly includes a connecting plate, a handle, a limiting block, and a locking rod. Under the action of the handle, the limiting block, and the locking rod, the stability of the connecting plate and the fixing collar installed on the measuring instrument body can be ensured. By using the handle to drive the locking rod to separate from the limiting block, the filling barrel can be directly removed, thereby disassembling and cleaning the filling barrel. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0033] Figure 2 This is a schematic diagram of the overall structure of the material loading hopper of this utility model.

[0034] Figure 3 This is a schematic diagram of the overall structure of the shaft of this utility model.

[0035] Figure 4 This is a top view schematic diagram of the internal structure of the limiting frame of this utility model.

[0036] In the diagram: 1. Main body of the measuring instrument; 2. Loading bucket; 3. Fixing collar; 4. Piston assembly; 41. Shaft; 42. Piston plate; 43. Limiting cover; 44. Weight block; 5. Handle assembly; 51. Connecting plate; 52. Handle; 53. Limiting block; 54. Locking rod; 55. Limiting frame; 56. Guide plate; 57. Fixing rod; 58. Limiting spring. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] Example 1

[0039] This utility model provides, for example Figure 1-3The melt flow index tester shown includes a tester body 1, a loading tank 2, a piston assembly 4, a fixing collar 3, and a handle assembly 5. The outer wall of the loading tank 2 is slidably sleeved with the tester body 1, meaning the tester body 1 has a through hole matching the loading tank 2. A heating coil for heating the loading tank 2 is installed inside the tester body 1, thereby heating and melting the material inside the loading tank 2. A discharge port is connected to the bottom of the loading tank 2. The piston assembly 4 is disposed inside the loading tank 2 and is used to squeeze the molten sample inside the loading tank 2 out. That is, under the action of the piston assembly 4, the molten sample inside the loading tank 2 is discharged. When the molten material is discharged, the sample is extruded through a standard die under pressure during testing. At the same time, the timing device and cutting are started. The extruded sample is cut at the set time interval. The cut sample is weighed on an analytical balance. The melt mass flow rate or melt volume flow rate is calculated based on the weighing result and the cutting time. The fixing collar 3 is fixedly sleeved on the top of the outer wall of the loading barrel 2. The fixing collar 3 is slidably locked on the top of the main body 1 of the measuring instrument. The handle assembly 5 is set on the side of the fixing collar 3. The fixing collar 3 can limit the loading barrel 2 and ensure the stability of the fixing collar 3 under the action of the handle assembly 5.

[0040] Furthermore, the piston assembly 4 includes a shaft 41 and a piston plate 42. The outer wall of the piston plate 42 is slidably sleeved with the loading barrel 2. The bottom of the shaft 41 is fixedly connected to the piston plate 42. The piston assembly 4 also includes a limiting cover 43, a support ring, and a weight block 44. The limiting cover 43 is slidably sleeved on the outside of the shaft 41 and is slidably engaged with the top of the inner cavity of the loading barrel 2. The limiting cover 43 can improve the stability of the shaft 41. The support ring is fixedly sleeved on the outside of the shaft 41. The weight block 44 is slidably sleeved on the top of the outer wall of the shaft 41 and is located on the top of the support ring. Under the action of the support ring, the stability of the weight block 44 sleeved on the top of the shaft 41 can be guaranteed, thereby giving the piston plate 42 a constant compressive force on the sample inside the loading barrel 2.

[0041] Example 2

[0042] Based on Example 1, such as Figure 4As shown, the handle assembly 5 includes a connecting plate 51 and a handle 52. The connecting plate 51 is fixedly connected to the side of the fixing collar 3, and the handle 52 is slidably disposed outside the connecting plate 51. The handle assembly 5 also includes a limiting block 53 and a locking rod 54. The bottom of the limiting block 53 is fixedly connected to the main body 1 of the measuring instrument, and the limiting block 53 is located on the side of the connecting plate 51. One end of the locking rod 54 is fixedly connected to the handle 52, and the outer wall of the locking rod 54 is slidably inserted into the limiting block 53. Under the action of the locking rod 54 and the limiting block 53, the connecting plate 51 can be stably locked onto the top of the main body 1 of the measuring instrument, thereby ensuring the stability of the installation of the fixing collar 3 and the loading barrel 2. By pulling the handle 52, the locking rod 54 is separated from the limiting block 53, and the loading barrel 2 can be directly removed, thereby disassembling and cleaning the loading barrel 2.

[0043] Furthermore, the handle assembly 5 also includes a limiting frame 55 and a guide plate 56. The limiting frame 55 is fixedly connected to the top of the connecting plate 51, and the guide plate 56 is slidably sleeved inside the limiting frame 55. The end of the guide plate 56 is fixedly connected to the handle 52. Under the action of the limiting frame 55 and the guide plate 56, the handle 52 and the connecting plate 51 can maintain a stable sliding connection. The handle assembly 5 also includes a fixing rod 57 and a limiting spring 58. The fixing rod 57 is fixedly connected to the inside of the limiting frame 55, and the outer wall of the fixing rod 57 is slidably sleeved with the guide plate 56. The limiting spring 58 is slidably sleeved outside the fixing rod 57, and one end of the limiting spring 58 is pressed and fitted against the guide plate 56. The limiting spring 58 can give the handle 52 a spring pressing force through the guide plate 56, so that the handle 52 drives the locking rod 54 to maintain a stable locking state with the limiting block 53.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A melt flow indexer, characterized in that, include: Main body of the measuring instrument (1); The outer wall of the filling barrel (2) is slidably connected to the main body (1) of the measuring instrument. The main body (1) of the measuring instrument is equipped with a heating coil for heating the filling barrel (2), and the bottom of the filling barrel (2) is connected to the mold outlet. Piston assembly (4), the piston assembly (4) is disposed inside the loading barrel (2), the piston assembly (4) is used to squeeze the molten material inside the loading barrel (2) to discharge; Fixed collar (3), the fixed collar (3) is fixedly sleeved on the top of the outer wall of the loading barrel (2), and the fixed collar (3) is slidably snapped onto the top of the measuring instrument body (1); A handle assembly (5) is disposed on the side of the retaining collar (3).

2. The melt flow indexer according to claim 1, characterized in that, The piston assembly (4) includes: Piston plate (42), the outer wall of which is slidably sleeved with the loading barrel (2); Shaft (41), the bottom of which is fixedly connected to piston plate (42).

3. The melt flow indexer according to claim 2, characterized in that, The piston assembly (4) also includes: Limiting cover (43), the limiting cover (43) is slidably sleeved on the outside of the shaft (41), and the sliding of the limiting cover (43) is engaged with the top of the inner cavity of the loading barrel (2); A support collar, which is fixedly sleeved on the outside of the shaft (41); Weight block (44) is slidably sleeved on the top of the outer wall of shaft (41) and located on the top of support collar.

4. The melt flow indexer according to claim 1, characterized in that, The handle assembly (5) includes: A connecting plate (51) is fixedly connected to the side of the fixing collar (3); A handle (52) is slidably disposed on the outside of the connecting plate (51).

5. A melt flow indexer according to claim 4, characterized in that, The handle assembly (5) also includes: Limiting block (53), the bottom of the limiting block (53) is fixedly connected to the main body (1) of the measuring instrument, and the limiting block (53) is located on the side of the connecting plate (51); A locking rod (54) is fixedly connected at one end to a handle (52), and the outer wall of the locking rod (54) is slidably inserted into a limiting block (53).

6. A melt flow indexer according to claim 5, characterized in that, The handle assembly (5) also includes: A limiting frame (55) is fixedly connected to the top of the connecting plate (51); Guide plate (56), the guide plate (56) is slidably sleeved inside the limiting frame (55), and the end of the guide plate (56) is fixedly connected to the handle (52).

7. A melt flow indexer according to claim 6, characterized in that, The handle assembly (5) also includes: A fixing rod (57) is fixedly connected to the inside of the limiting frame (55), and the outer wall of the fixing rod (57) is slidably inserted into the guide plate (56). A limiting spring (58) is slidably sleeved on the outside of a fixed rod (57), and one end of the limiting spring (58) is pressed against a guide plate (56).

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