Torque rheometer

Abstract

The utility model discloses a torque rheometer which comprises a support, a material pressing assembly, an internal mixing chamber, a servo motor, a first coupler, a second coupler, a torque sensor, a spring, an installation frame, a transmission box, a left rotor and a right rotor. The first coupler is installed at the input end of the transmission case and arranged in the installation frame, the servo motor is installed in the installation frame, the output shaft of the servo motor is leftward, the second coupler is installed on the output shaft of the servo motor, the torque sensor is connected between the first coupler and the second coupler, and the torque sensor is connected with the first coupler and the second coupler. One end of the spring is installed on the torque sensor, and the left rotor and the right rotor are rotationally arranged in the internal mixing chamber and engaged with each other. According to the utility model, the spring flexibly swings when the torque sensor rotates, the swing amplitude of the torque sensor is buffered, and the measurement precision of the torque sensor is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of measuring instrument technology, specifically to a torque rheometer. Background Technology

[0002] Torque rheometers are ideal devices for studying the flow, plasticization, thermal, and shear stability of materials. They provide a dynamic measurement method that more closely approximates actual processing conditions, allowing for continuous, accurate, and reliable determination of material rheological properties under similar processing environments. Examples include the mixing of multi-component materials, the cross-linking and curing of thermosetting resins, the vulcanization of elastomers, the dynamic stability of materials, and the influence of screw speed on the processing performance of the system. Most existing torque rheometers include a support, a pressure assembly, a mixing chamber, a motor, a first coupling, a second coupling, a torque sensor, a mounting frame, a transmission box, a left rotor, and a right rotor. The mounting frame is fixed to the support, the transmission box is fixed to the mounting frame, the mixing chamber is fixed to the transmission box, the pressure assembly is fixed to the mixing chamber, the motor is mounted on the mounting frame, the left and right rotors are mounted inside the mixing chamber and connected to the output end of the transmission box, the first coupling is connected to the input end of the transmission box, and the second coupling is connected to the output shaft of the motor. The first and second couplings are connected via a torque sensor. While this torque rheometer can meet the needs to a certain extent, its disadvantage is that the torque sensor is connected between the first and second couplings, and it is prone to wobbling during rotation, which affects the measurement accuracy. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a torque rheometer.

[0004] The technical solution of this utility model is as follows:

[0005] A torque rheometer includes a support, a pressing assembly, a mixing chamber, a servo motor, a first coupling, a second coupling, a torque sensor, a spring, a mounting frame, a transmission box, a left rotor, and a right rotor. The mounting frame is mounted on the support, and the transmission box is mounted on the left side of the mounting frame. The first coupling is mounted on the input end of the transmission box and placed inside the mounting frame. The servo motor is mounted inside the mounting frame, with its output shaft pointing to the left. The second coupling is mounted on the output shaft of the servo motor. The torque sensor is connected between the first coupling and the second coupling. One end of the spring is mounted on the torque sensor. The mixing chamber is mounted on the left side of the transmission box and has a feed inlet at its top. A heating rod is provided inside the mixing chamber. The left rotor and the right rotor are rotatably disposed inside the mixing chamber and mesh with each other. The output end of the transmission box is connected to the left rotor and the right rotor and drives the left rotor and the right rotor to rotate in opposite directions. The pressing assembly is mounted on the top of the mixing chamber and communicates with the feed inlet.

[0006] Preferably, the pressing assembly includes a hopper, a hammer, a support base, and a drive structure. The support base is installed on the mixing chamber, the hopper is installed on the mixing chamber and its bottom is connected to the feed inlet, the hammer is placed vertically inside the hopper, and the drive structure is installed inside the support base. Its drive end is connected to the hammer and drives the hammer to move up and down inside the hopper.

[0007] Preferably, the drive structure includes a handle wheel, a gear shaft, a gear, and a handle. The top of the support base is provided with a gear cavity, and a sliding cavity communicating with the gear cavity is provided inside the gear cavity. A rack is provided on the side of the unloading hammer. The gear is installed in the gear cavity through the gear shaft. The handle wheel is fixed on the gear shaft. The handle is installed on the handle wheel. The upper end of the unloading hammer extends into the gear cavity through the sliding cavity. The rack meshes with the gear.

[0008] Preferably, the mixing chamber includes a front plate, a middle plate, and a rear plate. The top of the middle plate is provided with the feed inlet, and the middle part is provided with a rotating cavity communicating with the feed inlet. The rear plate is fixed on the transmission box, the middle plate is fixed on the left side of the rear plate, the front plate is fixed on the left side of the middle plate, and the left rotor and the right rotor are rotatably mounted on the rear plate with their front ends extending into the rotating cavity.

[0009] Preferably, the mixing chamber further includes two positioning pins, two locking screws, and a pressure strip. The two positioning pins are fixed to the rear plate, the middle plate and the front plate are sequentially fitted onto the positioning pins, the pressure strip is pressed onto the front plate, and the locking screws pass through the pressure strip and screw onto the positioning pins to press the middle plate and the front plate onto the rear plate.

[0010] Preferably, the torque rheometer further includes a receiving hopper, which is mounted on the support and located below the mixing chamber.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model installs one end of the spring on the torque sensor, and uses the spring to flexibly swing when the torque sensor rotates to buffer the swing amplitude of the torque sensor, which can effectively improve the measurement accuracy of the torque sensor. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of the torque rheometer of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the mounting bracket of this utility model;

[0015] Figure 3 This is a schematic diagram of the overall structure of the pressing assembly of this utility model;

[0016] Figure 4 This is an exploded view of the pressing assembly of this utility model;

[0017] Figure 5 This is a schematic diagram of the overall structure of the mixing chamber of this utility model;

[0018] Figure 6 This is an exploded view of the mixing chamber of this utility model;

[0019] Among them, 1-support, 2-pressing assembly, 3-mixing chamber, 4-servo motor, 5-first coupling, 6-second coupling, 7-torque sensor, 8-spring, 9-mounting bracket, 10-transmission box, 11-left rotor, 12-right rotor, 13-heating rod, 14-feeding hopper, 21-feeding hopper, 22-feeding hammer, 23-support fixing seat, 24-drive structure, 25-handle wheel, 26-gear shaft, 27-gear, 28-handle handle, 31-feeding port, 32-front plate, 33-middle plate, 34-rear plate, 35-rotating cavity, 36-positioning pin, 37-locking screw, 38-pressure bar, 221-rack, 231-gear cavity, 232-sliding cavity. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] To illustrate the technical solution described in this utility model, specific embodiments are described below.

[0022] Example 1

[0023] like Figures 1 to 6As shown, the torque rheometer of this embodiment includes a support 1, a pressing assembly 2, a mixing chamber 3, a servo motor 4, a first coupling 5, a second coupling 6, a torque sensor 7, a spring 8, a mounting frame 9, a transmission box 10, a left rotor 11, and a right rotor 12. The mounting frame 9 is mounted on the support 1, the transmission box 10 is mounted on the left side of the mounting frame 9, the first coupling 5 is mounted on the input end of the transmission box 10 and placed inside the mounting frame 9, the servo motor 4 is mounted inside the mounting frame 9 with its output shaft pointing to the left, and the second coupling 6 is mounted on the output shaft of the servo motor 4. The torque sensor 7... The torque sensor 7 is connected between the first coupling 5 and the second coupling 6. One end of the spring 8 is mounted on the torque sensor 7. The mixing chamber 3 is installed on the left side of the transmission box 10, and its top is provided with a feed inlet 31. The mixing chamber 3 is provided with a heating rod 13. The left rotor 11 and the right rotor 12 are rotatably disposed in the mixing chamber 3 and mesh with each other. The output end of the transmission box 10 is connected to the left rotor 11 and the right rotor 12 and drives the left rotor 11 and the right rotor 12 to rotate in opposite directions. The pressing assembly 2 is installed on the top of the mixing chamber 3 and communicates with the feed inlet 31. During operation, the material feeding assembly 2 feeds the material into the mixing chamber 3. The heating rod 13 heats the material. The servo motor 4 rotates, driving the second coupling 6 to rotate. The second coupling 6, through the torque sensor 7, drives the first coupling 5 to rotate. The first coupling 5, through the transmission box 10, drives the left rotor 11 and right rotor 12 to rotate within the material. The torque sensor 7 transmits the measured reaction force data to an external system for analyzing various properties of the material. In this process, the spring 8 is fixed to the torque sensor 7, with its other end free, allowing for flexible oscillation when the torque sensor rotates. In this embodiment, the torque rheometer utilizes the flexible oscillation of the spring when the torque sensor rotates to buffer the amplitude of the torque sensor's oscillation, effectively improving the measurement accuracy of the torque sensor.

[0024] In this embodiment, the pressing assembly 2 includes a feeding hopper 21, a feeding hammer 22, a support and fixing base 23, and a driving structure 24. The support and fixing base 23 is installed on the mixing chamber 3, and the feeding hopper 21 is installed on the mixing chamber 3 with its bottom connected to the feed inlet 31. The feeding hammer 22 is vertically placed inside the feeding hopper 21. The driving structure 24 is installed inside the support and fixing base 23, and its driving end is connected to the feeding hammer 22 and drives the feeding hammer 22 to move up and down inside the feeding hopper 21. The driving structure 24 drives the feeding hammer 22 to move down and squeeze the material in the feeding hopper 21 into the mixing chamber 3, which can achieve rapid feeding.

[0025] In this embodiment, the drive structure 24 includes a handle wheel 25, a gear shaft 26, a gear 27, and a handle 28. The top of the support base 23 is provided with a gear cavity 231, and a sliding cavity 232 communicating with the gear cavity 231 is provided inside. The side of the discharge hammer 22 is provided with a rack 221. The gear 27 is installed in the gear cavity 231 through the gear shaft 26. The handle wheel 25 is fixed on the gear shaft 26, and the handle 28 is installed on the handle wheel 25. The upper end of the discharge hammer 22 passes through the sliding cavity 232 and extends into the gear cavity 231. The rack 221 meshes with the gear 27. By rotating the handle wheel 25 through the handle 28, the gear 27 is driven to rotate through the gear shaft 26. The gear 27 drives the rack 221 to move up and down, so that the discharge hammer 22 moves down to squeeze the material of the discharge hopper 21 into the mixing chamber 3 and resets.

[0026] In this embodiment, the mixing chamber 3 includes a front plate 32, a middle plate 33, and a rear plate 34. The top of the middle plate 33 is provided with the feed inlet 31, and the middle part is provided with a rotating cavity 35 communicating with the feed inlet 31. The rear plate 34 is fixed on the transmission box 10, the middle plate 33 is fixed on the left side of the rear plate 34, and the front plate 32 is fixed on the left side of the middle plate 33. The left rotor 11 and the right rotor 12 are rotatably mounted on the rear plate 34, and their front ends extend into the rotating cavity 35. The mixing chamber 3 is assembled using the front plate 32, the middle plate 33, and the rear plate 34, which facilitates the installation and disassembly of components.

[0027] In this embodiment, the mixing chamber 3 further includes two positioning pins 36, two locking screws 37, and a pressure strip 38. The two positioning pins 36 are fixed on the rear plate 34. The middle plate 33 and the front plate 32 are sequentially fitted onto the positioning pins 36. The pressure strip 38 presses onto the front plate 32. The locking screws 37 pass through the pressure strip 38 and screw onto the positioning pins 36 to press the middle plate 33 and the front plate 32 onto the rear plate 34. The locking screws 37, the pressure strip 38, and the positioning pins 36 work together to press and fix the front plate 32 and the middle plate 33 onto the rear plate 34, which facilitates the installation and disassembly of components and the cleaning of the interior of the mixing chamber 3.

[0028] In this embodiment, the torque rheometer further includes a receiving hopper 14, which is installed on the support 1 and located below the mixing chamber 3, for receiving materials coming out of the mixing chamber 3.

[0029] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements 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 torque rheometer characterized by: The torque rheometer comprises a support, a pressing assembly, a mixing chamber, a servo motor, a first coupling, a second coupling, a torque sensor, a spring, a mounting frame, a transmission box, a left rotor and a right rotor, the mounting frame is mounted on the support, the transmission box is mounted on the left side of the mounting frame, the first coupling is mounted on the input end of the transmission box and placed in the mounting frame, the servo motor is mounted in the mounting frame and the output shaft thereof is directed to the left, the second coupling is mounted on the output shaft of the servo motor, the torque sensor is connected between the first coupling and the second coupling, one end of the spring is mounted on the torque sensor, the mixing chamber is mounted on the left side of the transmission box and is provided with a feeding port at the top, the mixing chamber is provided with a heating rod, the left rotor and the right rotor are rotatably arranged in the mixing chamber and are engaged, the output end of the transmission box is connected with the left rotor and the right rotor and drives the left rotor and the right rotor to rotate in opposite directions, and the pressing assembly is mounted on the top of the mixing chamber and communicates with the feeding port.

2. The torque rheometer of claim 1, wherein: The pressing assembly comprises a lower hopper, a lower hammer, a supporting fixed seat and a driving structure, the supporting fixed seat is mounted on the mixing chamber, the lower hopper is mounted on the mixing chamber and communicates with the feeding port at the bottom, the lower hammer is vertically arranged in the lower hopper, and the driving structure is mounted in the supporting fixed seat and connected with the lower hammer at the driving end to drive the lower hammer to move up and down in the lower hopper.

3. The torque rheometer of claim 2, wherein: The driving structure comprises a handle wheel, a gear shaft, a gear and a handle knob, the top of the supporting fixed seat is provided with a gear cavity, the inside of the gear cavity is provided with a sliding cavity in communication with the gear cavity, the side surface of the lower hammer is provided with a rack, the gear is mounted in the gear cavity through the gear shaft, the handle wheel is fixed on the gear shaft, the handle knob is mounted on the handle wheel, the upper end of the lower hammer extends into the gear cavity through the sliding cavity, and the rack is engaged with the gear.

4. The torque rheometer of any one of claims 1 to 3, wherein: The mixing chamber comprises a front plate, a middle plate and a rear plate, the top of the middle plate is provided with the feeding port, the middle part is provided with a rotating cavity in communication with the feeding port, the rear plate is fixed on the transmission box, the middle plate is fixed on the left side of the rear plate, the front plate is fixed on the left side of the middle plate, and the left rotor and the right rotor are rotatably mounted on the rear plate and extend into the rotating cavity at the front ends.

5. The torque rheometer of claim 4, wherein: The mixing chamber further comprises two positioning pins, two locking screws and a pressing strip, the two positioning pins are fixed on the rear plate, the middle plate and the front plate are sequentially sleeved on the positioning pins, the pressing strip is pressed on the front plate, and the locking screws are screwed on the positioning pins through the pressing strip to press the middle plate and the front plate on the rear plate.

6. The torque rheometer of any one of claims 1 to 3, wherein: The torque rheometer further comprises a receiving hopper, which is mounted on the support and located below the mixing chamber.

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