Automatic pressurization cotton moisture regain tester

Abstract

The utility model relates to an automatic pressurization cotton moisture regain determinator, which belongs to the technical field of cotton detection and comprises a metal plate frame, a pressure cotton moisture regain detection mechanism is arranged on the metal plate frame and comprises a limit seat and a linear guide rail which are fixedly mounted on the surface of an aluminum flat plate on the inner side of the metal plate frame, and the linear guide rail is provided with a pressure cotton moisture regain detection mechanism. Two nut seats are slidably mounted on the linear guide rail, a positive and negative tooth lead screw is rotatably mounted between the nut seats, a connecting rod is rotatably mounted on the nut seats, a spring seat is rotatably mounted at one end of the connecting rod, and a guide sleeve penetrating out of the spring seat is inserted into the spring seat. According to the automatic pressurization cotton moisture regain tester, the pressure cotton moisture regain detection mechanism is arranged on the metal plate frame, cotton can be compacted by extruding the cotton through a push plate during use, then the moisture regain of a cotton sample can be measured through a resistance method, the moisture regain of the cotton can be better detected, use is convenient and fast, and the practicability is high. And the detection efficiency and precision of the cotton moisture regain are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cotton detection, in particular to an automatic pressure-applying cotton moisture regain detector. Background Technique

[0002] Cotton is a kind of plant fiber, which is the slender fiber on the seeds of cotton plants. It is an important textile raw material and is used to make textiles such as cotton cloth, cotton thread and cotton fabrics. It has the characteristics of softness, good hygroscopicity and good air permeability. Therefore, it is widely used to make products such as clothes, bedding, towels, etc. Cotton is also one of the most important cash crops in the world and is widely planted in many countries.

[0003] The patent publication number CN214310268U discloses a portable cotton moisture regain detector, which includes a housing structure, a pressure mechanism and a control component. Among them, a display screen is arranged outside the housing structure; the pressure mechanism is arranged inside the housing structure and includes a fixed electrode plate and a movable electrode plate. The movable electrode plate is connected to the linear motor shaft, and a pressure sensor and a linear motor are arranged in sequence at the rear; the control component is arranged in front of the fixed electrode plate and includes a circuit test board, a power supply and a motor control board. The motor control board is connected to the circuit test board through a wire to drive the motor, push the pressure mechanism, and control the electrode plate pressure according to the pressure sensor; a single-chip microcomputer is arranged on the circuit test board and is connected to the display screen through a wire, and controls the measurement of cotton moisture according to the pressure value, solving the problems of cumbersome manual operation of the old-fashioned instrument, manual cotton pressing, high labor intensity, and test accuracy error.

[0004] The above patent improves the disadvantage of the existing cotton moisture regain detection equipment relying on manual pressure application and having a high labor intensity when pressing and detecting cotton. This application provides another implementation solution for the problems proposed in the above patent. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides an automatic pressure-applying cotton moisture regain detector, which has the advantages of convenient and fast use, and solves the problem that the existing cotton moisture regain detection equipment relies on manual pressure application and has a high labor intensity when pressing and detecting cotton.

[0006] To achieve the above object, the utility model provides the following technical solution: an automatic pressure-applying cotton moisture regain detector, including a sheet metal frame, and a pressure cotton moisture detection mechanism is arranged on the sheet metal frame;

[0007] The pressure cotton moisture regain detection mechanism includes a limit seat and a linear guide rail fixedly installed on the surface of an aluminum flat plate inside a sheet metal frame. Two nut seats are slidably installed on the linear guide rail. A left - hand and right - hand lead screw is rotatably installed between the nut seats. A connecting rod is rotatably installed on the nut seat. One end of the connecting rod is rotatably installed with a spring seat. A guide sleeve penetrating through the spring seat is inserted into the spring seat. A pressure sensor is fixedly installed at the top of the guide sleeve. A push plate is fixedly installed at the top of the pressure sensor.

[0008] Furthermore, a stepping motor and a motor driver are fixedly installed at the bottom of the sheet metal frame, and a proximity switch is fixedly installed on the lower surface inside the sheet metal frame.

[0009] Furthermore, the threads of the left - hand and right - hand lead screw on the left side of the limit seat are opposite to those on the right side of the limit seat, and the left - hand and right - hand lead screw is in threaded connection with the nut seat.

[0010] Furthermore, the end of the connecting rod away from the nut seat is rotatably connected to the spring seat.

[0011] Furthermore, synchronous belt pulleys are fixedly installed on the surface of the left - hand and right - hand lead screw and the output end of the stepping motor, and a synchronous belt is sleeved on the synchronous belt pulleys.

[0012] Furthermore, guide beads are rotatably installed on the push plate.

[0013] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0014] In this automatic pressure cotton moisture regain measuring instrument, by providing a pressure cotton moisture regain detection mechanism on the sheet metal frame, when in use, the push plate is used to squeeze the cotton, so that the moisture in the cotton can be better gathered together, which is beneficial to better detecting the moisture regain rate of the cotton. It is convenient and fast to use, greatly improving the detection efficiency and accuracy of the cotton moisture regain rate, and solving the problem that the cotton moisture regain rate detection equipment in the prior art relies on manual pressure and has a large labor intensity when pressing and detecting cotton. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0016] In the figure: 1. Sheet metal frame; 2. Limit seat; 3. Linear guide rail; 4. Left - hand and right - hand lead screw; 5. Nut seat; 6. Connecting rod; 7. Guide sleeve; 8. Spring seat; 9. Pressure sensor; 10. Push plate; 11. Stepping motor; 12. Motor driver; 13. First proximity switch; 14. Synchronous belt pulley; 15. Synchronous belt; 16. Guide bead; 17. Second proximity switch. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying 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 embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0018] Please refer to Figure 1 , an automatic pressure cotton moisture regain detector in this embodiment includes a sheet metal frame 1. A pressure cotton moisture detection mechanism is provided on the sheet metal frame 1. The pressure cotton moisture detection mechanism includes a limit seat 2 and a linear guide rail 3 fixedly installed on the inner lower surface of the sheet metal frame 1. Two nut seats 5 are slidably installed on the linear guide rail 3. A positive and negative lead screw 4 is rotatably installed between the nut seats 5. The threads of the positive and negative lead screw 4 on the left side of the limit seat 2 and the threads on the right side of the limit seat 2 are opposite. The positive and negative lead screw 4 is threadedly connected with the nut seats 5. A connecting rod 6 is rotatably installed on the nut seat 5. One end of the connecting rod 6 is rotatably installed with a spring seat 8. A guide sleeve 7 penetrating outside the spring seat 8 is inserted into the spring seat 8. A pressure sensor 9 is fixedly installed on the top of the guide sleeve 7. A push plate 10 is fixedly installed on the top of the pressure sensor 9.

[0019] A stepper motor 11 and a motor driver 12 are fixedly installed at the bottom of the sheet metal frame 1. Synchronous belt pulleys 14 are fixedly installed on the surface of the positive and negative lead screw 4 and the output end of the stepper motor 11. A synchronous belt 15 is sleeved on the synchronous belt pulleys 14. A guide bead 16 is rotatably installed on the push plate 10. A first proximity switch 13 is fixedly installed on the inner lower surface of the sheet metal frame 1. A second proximity switch 17 is fixedly installed on the limit seat 2.

[0020] It should be noted that a cotton bin for placing cotton is formed between the push plate 10 and the inner upper surface of the sheet metal frame 1 in this embodiment.

[0021] It should be noted that a compression spring is provided between the inside of the spring seat 8 and the guide sleeve 7 in this embodiment.

[0022] It should be noted that in this embodiment, the stepper motor 11 drives the positive and negative lead screw 4 to rotate through the synchronous belt pulleys 14 and the synchronous belt 15, so as to drive the nut seats 5 to move horizontally along the linear guide rail 3. When the nut seats 5 move towards the center, the spring seat 8 is pushed upward through the connecting rod 6. There is a compression spring in the spring seat 8, and an internal pressure sensor is provided at the top of the compression spring. Thus, the pressure between the two plates can be measured by the internal pressure sensor. The pressure change near 730N can be smoothed through the compression spring, so that the pressure sensor 9 has enough time to detect the force of 730N.

[0023] The working principle of the above embodiment is as follows:

[0024] The stepper motor 1 drives the rotation of the left - hand and right - hand lead screw 4 through the synchronous pulley 14 and the synchronous belt 15. The rotation of the left - hand and right - hand lead screw 4 drives the nut seat 5 to move on the linear guide 3. When the nut seat 5 moves towards the middle, the spring seat 8 will be pushed upwards along the guide sleeve 7 through the connecting rod 6, and thus the push plate 10 will be pushed upwards through the spring seat 8. When the nut seat 5 moves towards both sides, the spring seat 8 will be pulled downwards through the connecting rod 6, and thus the push plate 10 will be pulled downwards. When measuring the moisture regain rate of cotton, first put an appropriate amount of cotton into the cotton storage bin. The stepper motor 1 rotates forward, and the device starts to operate. The push plate 10 will compress the cotton. When compressed to a certain extent, continuous movement will cause the spring seat 8 to be compressed. The pressure of the spring seat 8 is measured by the pressure sensor 9. When the pressure reaches the required value, the operation stops. Based on the self - locking characteristic of the left - hand and right - hand lead screw 4, the pressure can still be maintained at this time. Next, using the law that the mass - specific resistance of cotton fiber has a negative correlation with its moisture regain rate, under certain conditions such as a certain amount of fiber, pressure, voltage, temperature, and test area, the mass - specific resistance of cotton fiber is measured, and the moisture regain rate of cotton fiber is indirectly measured. After measuring the moisture regain rate of cotton, the stepper motor 1 rotates in reverse and returns to the initial position. The moving position of the nut seat 5 can be detected through the first proximity switch 13, and the moving position of the spring seat 8 can be detected through the second proximity switch 17 to ensure the moving range of the nut seat 5 and the spring seat 8.

[0025] It should be noted that the cotton moisture regain rate detection method and standard adopted by the device of this application are cited from GB / T6102.2 - 2012 "Test Method for Moisture Regain of Raw Cotton - Resistance Method".

[0026] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non - exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of another identical element in the process, method, article or device including the said element.

[0027] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An automatic pressurized cotton moisture regain measuring instrument, comprising a sheet metal frame (1), characterized in that: The sheet metal frame (1) is provided with a pressure cotton moisture regain detection mechanism; The pressure cotton moisture regain detection mechanism comprises a limit seat (2) and a linear guide rail (3) fixedly mounted on the inner aluminum plate surface of the sheet metal frame (1); two nut seats (5) are slidably mounted on the linear guide rail (3); a forward and reverse threaded screw (4) is rotatably mounted between the nut seats (5); a connecting rod (6) is rotatably mounted on the nut seat (5); a spring seat (8) is rotatably mounted at one end of the connecting rod (6); a guide sleeve (7) is inserted into the spring seat (8) and extends to the outside of the spring seat (8); a pressure sensor (9) is fixedly mounted on the top of the guide sleeve (7); and a push plate (10) is fixedly mounted on the top of the pressure sensor (9).

2. The automatic pressurized cotton moisture regain measuring instrument according to claim 1, characterized in that: A stepper motor (11) and a motor driver (12) are fixedly mounted on the bottom of the sheet metal frame (1).

3. The automatic pressurized cotton moisture regain measuring instrument according to claim 1, characterized in that: The thread of the positive and negative threaded screw (4) located on the left side of the limiting seat (2) is opposite to the thread of the thread located on the right side of the limiting seat (2), and the positive and negative threaded screw (4) is threadedly connected to the nut seat (5).

4. The automatic pressurized cotton moisture regain measuring instrument according to claim 1, characterized in that: One end of the connecting rod (6) away from the nut seat (5) is rotatably connected to the spring seat (8).

5. The automatic pressurized cotton moisture regain measuring instrument according to claim 2, characterized in that: The surfaces of the forward and reverse threaded screws (4) and the output end of the stepping motor (11) are both fixedly mounted with synchronous pulleys (14), and a synchronous belt (15) is sleeved on the synchronous pulleys (14).

6. The automatic pressurized cotton moisture regain measuring instrument according to claim 1, characterized in that: A guide bead (16) is rotatably mounted on the push plate (10).

7. The automatic pressurized cotton moisture regain measuring instrument according to claim 1, characterized in that: A first proximity switch (13) is fixedly mounted on the inner lower surface of the sheet metal frame (1), and a second proximity switch (17) is fixedly mounted on the limit seat (2).

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