Improved sweater stretch density value tester

Abstract

The utility model provides an improved sweater stretch density value tester which is small in verification error and higher in measurement precision. The device comprises a machine body, a stretching end needle plate and a fixed end needle plate, the fixed end needle plate is fixedly installed on one side of the machine body, the stretching end needle plate and the fixed end needle plate are oppositely arranged and installed at the upper end of a sliding groove formed in the machine body in a sliding mode, and the device further comprises a digital display vernier caliper which is provided with a long positioning needle. The length of the long positioning needle extends in the direction of one side of the stretching end needle plate and one side of the fixed end needle plate, a linear stepping motor is arranged in the machine body and installed on the side, away from the fixed end needle plate, of the bottom of the sliding groove, and the output end of the linear stepping motor is in power connection with the stretching end needle plate.

Description

Technical Field

[0001] The utility model relates to the technical field of sweater density measurement devices, and particularly to an improved sweater density tester. Background Art

[0002] Sweaters are knitted in a shaped or semi-shaped manner. Therefore, it is necessary to first determine the finished product density, and then make a process sheet and carry out mass production. The finished product density determines the size of the sweater. The measurement of the density value of the sweater is a routine and important task. The Chinese utility model patent application No. 201220576274.1 discloses a density tester for knitted fabrics, which is used to measure the density value of sweaters. However, during the use process, it has the following disadvantages: 1. The above-mentioned measuring instrument uses an ordinary vernier caliper, and the reading speed of the ordinary vernier caliper is slow, and it takes time to calculate the stretching length; 2. The stretching end needle plate is power-connected to the test mechanism inside the machine body, and the test mechanism drives the stretching end needle plate to translate and stretch. The model of this test mechanism is not specifically described. However, if an ordinary motor is used as the power, there is a problem of insufficient precision control, thus affecting the test precision. Content of the Utility Model

[0003] Aiming at the problems of time-consuming calculation of the stretching length and insufficient test precision existing in the existing density testers, the utility model provides an improved sweater density tester with higher measurement precision.

[0004] Its technical solution is as follows: an improved sweater density tester, which includes a machine body, a stretching end needle plate and a fixed end needle plate. The fixed end needle plate is fixedly installed on one side of the machine body. The stretching end needle plate is arranged opposite to the fixed end needle plate and is slidably installed at the upper end of a chute arranged on the machine body. Its characteristics are: it also includes a digital display vernier caliper, and a positioning long needle is arranged on the digital display vernier caliper. The length of the positioning long needle extends towards the stretching end needle plate and the fixed end needle plate. A linear stepper motor is arranged inside the machine body, and the linear stepper motor is installed on one side of the bottom of the chute far from the fixed end needle plate. The output end of the linear stepper motor is power-connected to the stretching end needle plate.

[0005] Its further characteristics are: a kidney-shaped mounting hole is arranged at the bottom of the fixed end needle plate corresponding to the mounting position of the machine body, and the fixed end needle plate is fixedly installed on the kidney-shaped mounting hole through a combination of bolts and nuts;

[0006] A row of inserting needles composed of 6 to 8 needles are respectively arranged at the upper ends of the fixed end needle plate and the stretching end needle plate. The inserting needles include thick needles and thin needles;

[0007] Inside the body, there is an information processing module, which includes a main control unit. The main control unit is connected to a driving unit, a sensor, a data output unit, and a data storage unit. The main control unit is connected to the linear stepper motor through the driving unit. The main control unit uses an RF2000-3 single-chip microcomputer, the driving unit uses a TB6560 stepper motor driver, the sensor uses a ZEMIC load cell, the data output unit uses an LCD display screen, and the data storage unit uses an SD card;

[0008] On one side of the LCD display screen, there is a keyboard, and on the other side, there are small holes. One small hole at the upper end is used to adjust the screen brightness, and one small hole at the lower end can be used in combination with a standard weight to calibrate the internal sensor.

[0009] After adopting the above structure, the ordinary vernier caliper used in the traditional knitted fabric density measuring instrument is changed to a digital display vernier caliper that is easier to read the value. At the same time, there is a positioning long needle on the digital display vernier caliper. By pointing to the position of the positioning long needle, the digital display vernier caliper can be moved to a more accurate position, which is convenient for accurately reading the value; and the measuring instrument of this application uses a linear stepper motor to drive the mobile end to translate, so the moving accuracy is higher, thereby improving the measurement accuracy.

[0010] At the same time, an SD card is built into the body, which can prevent data loss, and it can be wirelessly connected to a computer and a printer externally, which is convenient for printing reports. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0012] Figure 2 It is a schematic diagram when the present utility model is in the test working state;

[0013] Figure 3 It is a schematic diagram when the present utility model is being calibrated;

[0014] Figure 4 It is a logic block diagram of the zero adjustment circuit of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] Such as Figure 1 、 Figure 2As shown in the figure, an improved sweater density tester includes a machine body 1, a stretching end needle plate 3 and a fixed end needle plate 2. The fixed end needle plate 2 is fixedly installed on one side of the machine body 1. Specifically, a kidney-shaped mounting hole 13 is provided at the bottom of the fixed end needle plate 2 corresponding to the mounting position of the machine body 1. The fixed end needle plate 2 is fixedly installed on the kidney-shaped mounting hole 13 through a bolt-nut assembly. The stretching end needle plate 3 is arranged opposite to the fixed end needle plate 2 and is slidably installed at the upper end of a chute 5 provided on the machine body. One row of pins 4 composed of 6 to 8 pins are respectively provided at the upper ends of the fixed end needle plate 2 and the stretching end needle plate 3. In the actual use process, according to the different needle counts of the sweater, the pins 4 can be divided into two types: thick pins and thin pins. Both the stretching end needle plate 3 and the fixed end needle plate 2 are detachably connected, which is convenient for customers to test sweater pieces with different needle counts, making the test more flexible and comprehensive.

[0016] A linear stepper motor 12 is provided inside the machine body 1. The linear stepper motor 12 is installed on one side of the bottom of the chute 5 away from the fixed end needle plate 2. The output end of the linear stepper motor 12 is power-connected to the stretching end needle plate 3. The two ends of the woolen sweater sample to be tested are respectively connected to the pins 4 on the fixed end needle plate 2 and the stretching end needle plate 3. The linear stepper motor 12 drives the stretching end needle plate 3 to move along the chute 5 to test the density value of the woolen sweater.

[0017] It also includes a digital display vernier caliper 6 installed on the machine body 1. A positioning long needle 6-1 is provided on the digital display vernier caliper 6. The positioning long needle 6-1 extends towards the stretching end needle plate 3 and the fixed end needle plate 2. During operation, by moving the positioning long needle 6-1 on the digital display vernier caliper 6, after it is aligned with the object to be measured, the value can be quickly read, and the accuracy of the read value is higher. Among them, for knitted sweaters with a large number of needles, more than 10 coils can be selected to install the sample for stretching. After stretching, use the digital display vernier caliper 6 to slide and measure the length value of 10 uniform coils among them. For knitted sweaters with a small number of needles, 10 coils can be directly counted to install the sample, and the length value of 10 coils will be displayed on the screen after stretching.

[0018] Inside the machine body 1, there is an information processing module, which includes a main control unit 9. The main control unit 9 is connected to a driving unit, a sensor 10, a data output unit, and a data storage unit. The main control unit 9 uses an RF2000-3 single-chip microcomputer. The main control unit 9 is connected to a linear stepper motor 12 through the driving unit. The driving unit uses a TB6560 stepper motor driver. The sensor 10 uses a ZEMIC load cell L6C-C3-20kg-2B. The sensor 10 is fixed inside the machine body 1. The fixed-end needle plate 2 is connected to the sensor 10 on the machine body 1 through an oblong mounting hole 13. The data output unit uses an LCD display screen 8. The data storage unit uses an SD card 11. There is also a keyboard 7 on the machine body. The keyboard 7 is arranged on the right side of the LCD display screen 8. There are two small holes on the left side of the LCD display screen 8. The upper small hole 14 is used to adjust the screen brightness. The lower small hole 15 can be used in conjunction with a standard weight to calibrate the internal sensor 10.

[0019] Specifically, the working principle of this data processing module is as follows: After installing the specimen, the main control unit 9 drives the linear stepper motor 12 to work through the driving unit. The stretching-end needle plate 3 is driven by the linear stepper motor 12 to move left along the chute 5 to stretch the specimen. The displacement distance is measured by calculating the number of steps of the linear stepper motor 12. The stretching force is sensed and measured by the sensor 10 connected to the fixed-end needle plate 2. The sensor 10 transmits the detected stretching force to the main control unit 9 for processing and then sends it to the LCD display screen 8 for screen display and the SD card 11 for storage respectively.

[0020] As Figure 3 , 4 shown, when the tester of the present invention needs to be calibrated, operate the keyboard of the instrument for setting, select the zero adjustment by pressing the key, then lift the right end of the instrument and stand it up. First, record the initial value of the instrument. Hang a 1kg weight on the pin 4 with a long rope. At this time, the theoretical value should be equal to the initial value + the gravity value of the 1kg weight, that is, equal to the initial value + 9.8N. Insert a small screwdriver into the hole 15 to adjust the button. Rotate it to the left to decrease the value, and rotate it to the right to increase the value until this value is equal to the theoretical value and is displayed on the LCD display screen 8, then the instrument calibration is completed.

[0021] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any change or replacement that can be easily thought of by those familiar with the technology within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An improved sweater density tester, which comprises a machine body, a stretching end needle plate and a fixed end needle plate. The fixed end needle plate is fixedly installed on one side of the machine body. The stretching end needle plate is arranged opposite to the fixed end needle plate and is slidably installed at the upper end of a chute provided on the machine body. It is characterized in that: It also includes a digital display vernier caliper, on which a positioning long needle is provided. The length of the positioning long needle extends towards the stretching end needle plate and the fixed end needle plate. A linear stepper motor is arranged inside the machine body. The linear stepper motor is installed on one side of the bottom of the chute away from the fixed end needle plate. The output end of the linear stepper motor is power-connected to the stretching end needle plate.

2. The improved sweater density tester according to claim 1, wherein: At the installation position of the machine body corresponding to the bottom of the fixed end needle plate, there is an oblong mounting hole. The fixed end needle plate is fixedly installed on the oblong mounting hole through a combination of bolts and nuts.

3. The improved sweater density tester according to claim 2, characterized in that: On the upper ends of the fixed end needle plate and the stretching end needle plate, there is a row of insertion needles composed of 6 to 8 needles respectively. The insertion needles include thick needles and thin needles.

4. An improved sweater density tester according to claim 1, characterized in that: An information processing module is arranged inside the machine body. The information processing module includes a main control unit, which is connected to a driving unit, a sensor, a data output unit and a data storage unit. The main control unit is connected to the linear stepper motor through the driving unit. The main control unit uses an RF2000-3 single-chip microcomputer. The driving unit uses a TB6560 stepper motor driver. The sensor uses a ZEMIC load cell. The data output unit uses an LCD display screen. The data storage unit uses an SD card.

5. An improved sweater density tester according to claim 4, characterized in that: A keyboard is arranged on one side of the LCD display screen. There are small holes on the other side of the LCD display screen. One small hole at the upper end is used to adjust the screen brightness. One small hole at the lower end can be used to calibrate the internal sensor in cooperation with a standard weight.

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