Melt flow rate instrument with weight automatic lifting and rotating structure

Abstract

The utility model discloses a melt flow rate instrument with an automatic weight lifting and rotating structure, which belongs to the technical field of melt flow rate instruments and comprises a melt flow rate instrument body. A bottom plate is arranged at the bottom of the melt flow rate instrument body, a feeding hole is formed in the melt flow rate instrument body, and a material pressing rod is arranged above the feeding hole; the lifting rotating structure is connected to the bottom plate, a supporting frame is arranged on the lifting rotating structure, a through hole is formed in the supporting frame, a plurality of weights stacked together are arranged on the supporting frame, and the weights are located over the material pressing rod. The weight is placed on the supporting frame, the lifting unit drives the rotating motor to move downwards, so that the bottom of the weight directly abuts against the abutting joint at the top of the material pressing rod, the material pressing rod is pressed downwards, after the melt flow rate instrument discharges materials, the lifting air cylinder drives the weight to ascend to be separated from the abutting joint, and the supporting frame is driven by the rotating motor to rotate on one side. Therefore, the test process is simplified, and the automatic weight loading is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of melt flow rate meters, and particularly relates to a melt flow rate meter with an automatic lifting and rotating structure for weights. Background Technique

[0002] A melt flow rate meter, also known as a melt index meter, is an instrument used to measure the melt flow rate (MFR) value of various plastics and resins in a viscous flow state. It is widely used in industries such as plastic production, plastic products, petrochemicals, etc.

[0003] Currently, in the plastic material property test using a melt flow rate meter, manual loading of weights is adopted. In this measurement method, when measuring the melt flow rate, the operator needs to frequently pick up the weights of the preset weight and accurately place them on the pressure rod above the feed port of the instrument, so as to apply a constant pressure to the molten plastic and prompt it to flow out through the standard die, thereby completing the measurement of the flow rate.

[0004] However, when manual operation is carried out for a long time in batch tests or continuous work for a long time, it is easy to cause hand fatigue and muscle soreness, which in turn affects work efficiency and the accuracy of test results. At the same time, there are inevitably human errors in manual operation. For example, small deviations in the placement position of the weights and uneven application of pressure all have a subtle but important impact on the test results. Content of the Utility Model

[0005] The purpose of the utility model is to provide a melt flow rate meter with an automatic lifting and rotating structure for weights, which is proposed to solve the problems that when the existing melt flow rate meter is used for testing, manual frequent loading of weights for pressure feeding is required, this operation is not only cumbersome, but also easy to cause hand fatigue, and incorrect placement of the weights is likely to cause test errors.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: A melt flow rate meter with an automatic lifting and rotating structure for weights, comprising:

[0007] The melt flow rate meter body; a bottom plate is arranged at the bottom thereof, a feed port is arranged on the melt flow rate meter body, and a pressure rod is arranged above the feed port;

[0008] And a lifting and rotating structure, which is connected to the bottom plate, a support frame is arranged on the lifting and rotating structure, a through hole is arranged inside the support frame, and a plurality of weights stacked together are arranged on the support frame, and the weights are located directly above the pressure rod.

[0009] As a further description of the above technical scheme:

[0010] A number of limiting rods are provided on the support frame, and the limiting rods are located on the periphery of a number of the weights.

[0011] As a further description of the above technical solution:

[0012] A butting head is provided at the top of the pressure rod, and the butting head moves up and down through the through hole.

[0013] As a further description of the above technical solution:

[0014] The number of the limiting rods is at least 3.

[0015] As a further description of the above technical solution:

[0016] The lifting and rotating structure includes a lifting unit and a rotating motor. The rotating motor is connected to the lifting unit, and the support frame is connected to the rotating motor.

[0017] As a further description of the above technical solution:

[0018] The lifting unit includes a fixed slot and a lifting cylinder. The lifting cylinder is located in the fixed slot. The rotating motor is connected to the lifting cylinder and can move up and down in the fixed slot.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the present utility model are as follows:

[0020] In the present utility model, by providing a lifting and rotating structure on the bottom plate of the melt flow rate instrument body, a support frame is provided on the lifting and rotating structure, a number of weights are placed on the support frame and limited by limiting rods. A through hole is provided at the bottom of the support frame, and the butting head can move up and down through the through hole. When testing is required, only the weights need to be placed on the support frame. The lifting unit drives the rotating motor to move downward, so that the bottom of the weight directly abuts against the butting head at the top of the pressure rod to press down the pressure rod. During the pressing process, the lifting unit moves downward synchronously with the weight to ensure that the weight abuts against the butting head throughout the process without being affected by the support frame. When the melt flow rate instrument discharges materials, the lifting cylinder drives the weight to rise and separate from the butting head. The support frame rotates to one side under the drive of the rotating motor for automatic storage. This structure realizes automatic loading of weights, simplifies the test process of the melt flow rate instrument body, eliminates the need for manual loading of weights, does not cause hand fatigue, and reduces test errors. Description of the Drawings

[0021] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the attached drawings required for use in the embodiments. It should be understood that the following attached drawings only show some embodiments of the present utility model and should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other relevant attached drawings can also be obtained based on these attached drawings.

[0022] Figure 1 A three-dimensional view of a melt flow rate tester with an automatic lifting and rotating structure for weights Figure 1 。

[0023] Figure 2 A three-dimensional view of a melt flow rate tester with an automatic lifting and rotating structure for weights Figure 2 。

[0024] Figure 3 A three-dimensional view of a melt flow rate tester with an automatic lifting and rotating structure for weights Figure 3 。

[0025] Legend description:

[0026] 1 - Melt flow rate tester body; 2 - Bottom plate; 3 - Feeding port; 4 - Pressing rod; 5 - Lifting and rotating structure; 51 - Lifting unit; 511 - Fixed groove; 512 - Lifting cylinder; 52 - Rotating motor; 6 - Support frame; 7 - Through hole; 8 - Weight; 9 - Limiting rod; 10 - Contact head. Specific embodiments

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the attached drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the attached drawings in the embodiments of the present utility model. Obviously, the described embodiments are a part of the embodiments of the present utility model, rather than all of the embodiments. Usually, the components of the embodiments of the present utility model described and shown in the attached drawings here can be arranged and designed in various different configurations.

[0029] Accordingly, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts fall within the scope of protection of the present invention.

[0030] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0031] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "inner", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is habitually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0032] In the description of the present invention, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "install", "connect", and "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Please refer to Figures 1-3 , the present invention provides a technical solution: a melt flow rate instrument with an automatic lifting and rotating structure for weights, comprising:

[0034] A melt flow rate instrument body 1; a bottom plate 2 is provided at its bottom, a feed port 3 is provided on the melt flow rate instrument body 1, and a pressure rod 4 is provided above the feed port 3;

[0035] And a lifting and rotating structure 5, which is connected to the bottom plate 2, a support frame 6 is provided on the lifting and rotating structure 5, a through hole 7 is provided inside the support frame 6, and a number of weights 8 stacked together are provided on the support frame 6, and the weights 8 are located directly above the pressure rod 4.

[0036] A number of limiting rods 9 are provided on the support frame 6, and the limiting rods 9 are located on the periphery of a number of the weights 8.

[0037] A butt joint head 10 is provided at the top of the pressure bar 4, and the butt joint head 10 moves up and down through the through hole 7. During the test, the weight directly abuts against the butt joint head to press the material, without being affected by the support frame.

[0038] The number of the limiting rods 9 is at least 3. The triangular limit makes the weight not shake during the movement.

[0039] The lifting and rotating structure 5 includes a lifting unit 51 and a rotating motor 52. The rotating motor 52 is connected to the lifting unit 51, and the support frame 6 is connected to the rotating motor 52. It realizes the lifting and rotation when loading the weight, realizes automatic loading of the weight, and automatically stores it when not in use.

[0040] The lifting unit 51 includes a fixed slot 511 and a lifting cylinder 512. The lifting cylinder 512 is located in the fixed slot 511. The rotating motor 52 is connected to the lifting cylinder 512 and can move up and down in the fixed slot 511.

[0041] Working principle: By setting a lifting and rotating structure on the bottom plate of the melt flow rate tester body, a support frame is set on the lifting and rotating structure, several weights are placed on the support frame, and the limiting rods are used to limit them. A through hole is provided at the bottom of the support frame, and the butt joint head can move up and down through the through hole. When a test is required, only need to place the weight on the support frame, the lifting unit drives the rotating motor to move down, so that the bottom of the weight directly abuts against the butt joint head at the top of the pressure bar to press down the pressure bar. During the pressing process, the lifting unit moves down synchronously with the weight to ensure that the weight abuts against the butt joint head throughout the process, without being affected by the support frame. When the melt flow rate tester discharges the material, the lifting cylinder drives the weight to rise and separate from the butt joint head. The support frame rotates to one side under the drive of the rotating motor for automatic storage. This structure realizes automatic loading of the weight, simplifies the test process of the melt flow rate tester body, eliminates the need for manual loading of the weight, does not cause hand fatigue, and reduces the test error.

[0042] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A melt flow rate instrument with an automatic lifting and rotating structure for weights, characterized in that, Comprising: The melt flow rate instrument body; A bottom plate is provided at its bottom, a feed inlet is provided on the melt flow rate instrument body, and a pressure rod is provided above the feed inlet; And a lifting and rotating structure, which is connected to the bottom plate, a support frame is provided on the lifting and rotating structure, a through hole is provided inside the support frame, and a number of weights stacked together are provided on the support frame, and the weights are located directly above the pressure rod.

2. The melt flow rate instrument with an automatic lifting and rotating structure for weights according to claim 1, characterized in that, A number of limiting rods are provided on the support frame, and the limiting rods are located on the periphery of a number of the weights.

3. The melt flow rate instrument with an automatic lifting and rotating structure for weights according to claim 1, characterized in that A contact head is provided at the top of the pressure rod, and the contact head moves up and down through the through hole.

4. The melt flow rate instrument with an automatic lifting and rotating structure for weights according to claim 2, characterized in that, The number of the limiting rods is at least 3.

5. The melt flow rate instrument with an automatic lifting and rotating structure of weights according to claim 1, characterized in that, The lifting and rotating structure includes a lifting unit and a rotating motor, the rotating motor is connected to the lifting unit, and the support frame is connected to the rotating motor.

6. The melt flow rate instrument with an automatic lifting and rotating structure for weights according to claim 5, wherein The lifting unit includes a fixed groove and a lifting cylinder, the lifting cylinder is located in the fixed groove, the rotating motor is connected to the lifting cylinder and can be lifted in the fixed groove.

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