CN203688376U - Quilt compressing rebound resilience tester based on lead screw - Google Patents

Abstract

A cotton compression resilience tester based on a lead screw, comprising a frame, a pressing block, a test pressing piece for placing on the upper surface of a flattened sample, a sensor arranged on the frame for measuring the distance of the testing pressing piece, and A control module; the pressing block is an upper weight and a lower weight arranged at a certain distance up and down with the same quality; the control module is electrically connected to the sensor and the driving assembly; it also includes a driving assembly for lifting the pressing block And a guide rod that is arranged on the central axis of the test area and hangs vertically downward from the top of the test area, the upper weight and the lower weight are slidably worn on the guide rod; the upper weight and the lower weight Each includes a vertically extending cylindrical sliding part and a supporting part protruding from the outer peripheral surface of the sliding part; Supporting; the upper bracket and the lower bracket are respectively made with hollow areas matching the outer peripheral surfaces of the sliding parts of the upper weight and the lower weight.

Description

A quilt compression resilience tester based on lead screw

technical field

The utility model relates to a measuring tool, in particular to a tester for measuring the compressed resilience of silk floss.

Background technique

Compression resilience is one of the important indicators of the quality of silk cotton quilts. At present, the compression resilience of silk cotton quilts is tested by a silk cotton quilt compression resilience tester, although it can effectively improve the accuracy of test results and work efficiency (compared to manual testing. ratio), but there are still some shortcomings:

The compression block of the silk cotton compression resilience tester is suspended in the test area of the frame through flexible wires. During the pressing process, the landing point of the pressure block on the test pressure plate is not easy to maintain at the midpoint of the test pressure plate, which will affect the measurement accuracy. certain influence.

Utility model content

The purpose of this utility model is to overcome the shortcomings in the above-mentioned background technology and provide a cotton compression resilience tester based on a lead screw. The tester should have high measurement accuracy, and has the characteristics of simple structure and convenient use.

The technical scheme of the utility model is: a tester for the compressed resilience of silk cotton based on a lead screw, including a frame, a briquetting block that can be vertically moved and positioned on the central axis of the test area in the frame to apply pressure to the sample, and a It consists of a test piece placed on the upper surface of the flattened sample, a sensor and a control module arranged on the frame for measuring the distance of the test piece; the pressure block is an upper weight and a Lower the weight; the control module is electrically connected with the sensor and the drive assembly; it is characterized in that:

The tester also includes a driving assembly for lifting and lowering the pressure block and a guide rod arranged on the central axis of the test area and hanging vertically downward from the top of the test area, and the upper weight and the lower weight can slide through set on the guide rod; the upper weight and the lower weight both include a vertically extending columnar sliding part and a supporting part protruding from the outer peripheral surface of the sliding part;

The drive assembly supports the support parts of the upper weight and the lower weight respectively through a pair of upper and lower brackets arranged up and down; the upper bracket and the lower bracket are respectively made with The hollow area where the weight and the outer peripheral surface of the sliding part of the lower weight match.

The drive assembly includes a lead screw that is rotatably positioned vertically on the base and the support and is driven by a motor, a slider that is threadedly engaged with the lead screw and fixes the upper bracket and the lower bracket, and is fabricated on the support. And the guide rail that slides and cooperates with the slide block for guidance.

The frame includes four vertically arranged support columns and an upper plate and a lower plate respectively fixed at two ends of the support columns.

The number of the sensors is four and they are respectively arranged on the four upper vertices of the test area.

The tester also includes a base plate on which the frame and the driving assembly are fixed.

The masses of the upper weight and the lower weight are both 2 kg.

The beneficial effects of the utility model are:

The utility model slidably positions the pressing block on a rigid guide rod, so that the landing point of the pressing block on the test pressing plate can be accurately maintained at the midpoint position of the testing pressing plate, which greatly improves the measurement of the compressed resilience of silk cotton precision; in addition, the utility model also has the characteristics of simple structure and convenient use.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present utility model.

Fig. 2 is a three-dimensional structural schematic diagram of the frame in the present invention.

Fig. 3 is a three-dimensional schematic diagram of the drive assembly in the present invention.

Fig. 4 is a three-dimensional structural schematic diagram of the pressing block and the guide rod in the utility model.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings of the description, but the utility model is not limited to the following embodiments.

As shown in FIG. 1 , a screw-based silk cotton compression resilience tester includes a frame 1 , a pressing block, a drive assembly, a test pressing piece, a sensor 4 and a control module.

The outline range surrounded by the frame is a cuboid test area 1-1, which is used to position the sample (omitted in the figure) and allow vertical movement of the pressing block; the frame includes four vertically arranged supports Column 1-2, upper plate 1-3 fixed on the upper end of the support column, lower plate 1-4 fixed on the lower end of the support column (the side length of the upper plate and the lower plate is slightly greater than 20cm).

The test pressure piece (omitted in the figure) is used to place on the upper surface of the sample (the sample is placed on the upper surface of the lower plate); the test pressure piece is a flat sheet, generally a metal sheet (such as a stainless steel sheet) Or non-metallic sheet (such as plastic sheet).

The tester also includes a guide rod 1-5 arranged on the central axis of the test area and hanging vertically downward from the top of the test area; the upper end point of the guide rod is fixed at the midpoint position of the lower surface of the upper plate, and the A certain distance is maintained between the lower end point of the guide rod and the upper surface of the lower plate (the distance dimension is determined according to requirements).

The pressing block is used to apply pressure to the sample, and the pressing block is vertically movable and positioned on the central axis of the test area 1-1; the pressing block is an upper weight 2- 1 and the lower weight 2-2; the upper weight and the lower weight both include a vertically extending columnar sliding part A and a support part B that is located above the sliding part and protrudes horizontally along the outer peripheral surface of the sliding part; the upper weight The centerline position of the weight and the lower weight is formed with a through hole 6 that is convenient for the vertical passage of the guide rod; through the through hole, the upper weight and the lower weight are slidably worn on the guide rod (the upper weight and the lower weight The weight can be vertically moved and positioned on the central axis of the test area); the advantage of this is that when the upper weight and the lower weight press the test piece, the pressure point can accurately fall on the center of the test piece , thereby greatly improving the measurement accuracy of the utility model; the quality of the upper weight and the lower weight is determined according to the needs (2 kg is recommended); the length of the sliding part of the lower weight should be slightly longer than that of the upper weight Length, in order to achieve a better fit with the drive assembly.

The drive assembly supports the support parts of the upper weight and the lower weight respectively through a pair of upper bracket 3-3 and lower bracket 3-4 arranged up and down; the sliding of the upper weight and the lower weight All parts can slide into the hollow area C of the bracket, and the shape of the hollow area of the bracket matches the outer peripheral surface of the sliding part of the upper weight and the lower weight; as shown in Figure 3 and Figure 4, the support The upper part and the sliding part are cylindrical and the hollow area is circular; A certain distance should be kept.

The drive assembly is used for lifting and lowering the pressure block, including a lead screw 3-5 that is rotatably positioned vertically on the base 3-7 and the support 3-6 and driven by the motor 3-1, and is threadedly engaged with the lead screw and The slider 3-8 of the upper bracket and the lower bracket is fixed and the guide rail 3-9 that is made on the bracket and slides and cooperates with the slider for guidance; the motor and the screw are connected by a coupling 3-2 for power transmission.

When the motor drives the lead screw to work, the upper bracket and the lower bracket can drive the upper weight and the lower weight to move vertically; when the upper bracket and the lower bracket descend slowly, the lower weight first lands on the test pressure piece, At this time, the lower weight is separated from the support of the lower bracket, and the weight of the lower weight all falls on the test pressure piece, and the pressure on the test pressure piece is 19.6N; when the upper bracket and the lower bracket continue to drop slowly (the lower weight stays On the test pressing piece, the upper weight continues to drop), the upper weight lands on the lower weight, at this time the upper weight breaks away from the support of the upper bracket, the weight of the upper weight and the lower weight all fall on the test pressing piece, the test The pressure on the tablet is 39.2N; when the motor rotates in reverse, the upper weight and the lower weight are lifted up again.

The sensor is used to measure the thickness of the sample (specifically, the thickness data of the sample is obtained by measuring the distance of the pressure plate), and the number of sensors is four and they are respectively arranged on the four upper vertices of the test area (that is, the four corners of the upper plate); The sensor is an infrared ranging sensor with a measuring range of 10cm to 80cm and a measuring accuracy of ≤1mm; when setting up the sensor, the infrared emission range should be fully considered to prevent the infrared rays from directly irradiating the support column and thereby interfering with the ranging; by combining the sensor with the After subtracting the distance between the sensor and the test pressure piece from the distance between the lower plates, and then subtracting the thickness of the test pressure piece, the thickness value of the sample can be obtained.

The control module (omitted in the figure) is electrically connected to the sensor and the drive assembly; the control module is used for controlling the pressure application time, waiting time, data processing and displaying measurement results. Both the control module and the sensor can be obtained through outsourcing.

The tester also includes a bottom plate 5 on which the frame and the driving assembly are fixed.

The measuring method of the present utility model is as follows:

1. Prepare three groups of samples of 20cm×20cm, stack one group of samples neatly into the test area of the frame, and place the test pressing piece flat on the upper surface of the sample;

2. Start the utility model, drive the assembly to lower the pressing block, and only use the lower weight to apply pressure to the sample. After waiting for 30 seconds, lift the pressing block to separate it from the test pressing piece. After waiting for 30 seconds, use the lower weight to test After repeating the above steps 3 times, the sensor starts to measure the distance and returns the signal to the control module;

3. The driving component lowers the pressing block, and simultaneously uses the upper weight and the lower weight to apply pressure to the sample. After waiting for 30 seconds, lift the pressing block to separate it from the test pressing piece. The sensor starts to measure the distance and returns the signal to the control module;

4. After waiting for 3 minutes, the sensor starts to measure the distance and returns the signal to the control module;

5. Perform the above steps 1, 2, 3, and 4 in sequence for the other two groups of samples;

6. The control module obtains the compression rate and recovery rate of the silk cotton quilt after processing and calculation.

Claims (6)

1. A screw-based silk cotton compressed resilience tester, including a frame (1), and a pressure block that can be vertically moved and positioned on the central axis of the test area (1-1) in the frame to exert pressure on the sample , a test piece for placing on the upper surface of the flattened sample, a sensor (4) set on the frame for measuring the distance of the test piece, and a control module; the pressure blocks are arranged at a certain distance up and down and have the same quality The upper weight (2-1) and the lower weight (2-2); the control module is electrically connected to the sensor and the drive assembly; it is characterized in that: The tester also includes a drive assembly for lifting and lowering the pressure block and a guide rod (1-5) arranged on the central axis of the test area and hanging vertically downward from the top of the test area, the upper weight and the lower weight The weight is slidably worn on the guide rod; the upper weight and the lower weight both include a vertically extending columnar sliding part (A) and a supporting part (B) protruding from the outer peripheral surface of the sliding part; The driving assembly respectively supports the supporting parts of the upper weight and the lower weight through a pair of upper bracket (3-3) and lower bracket (3-4) arranged up and down; the upper bracket and the lower bracket Hollow areas (C) matching the outer peripheral surfaces of the sliding parts of the upper weight and the lower weight are made on the bracket respectively. the 2. A screw-based silk cotton compressed resilience tester according to claim 1, characterized in that: the drive assembly includes a rotatable and vertically positioned base (3-7) and a bracket (3- 6) The upper lead screw (3-5) driven by the motor (3-1), the slider (3-8) that is threadedly fitted with the lead screw and fixes the upper bracket and the lower bracket, and made in A guide rail (3-9) on the bracket and slidingly matched with the slider for guidance. the 3. A screw-based silk cotton compression resilience tester according to claim 2, characterized in that: the frame includes four vertically arranged support columns (1-2) and are respectively fixed on the two support columns. upper plate (1-3) and lower plate (1-4) at the end. the 4. A tester for the compressed resilience of silk cotton based on a lead screw according to claim 3, characterized in that: the number of the sensors is four and they are respectively arranged at the four upper vertices of the test area. the 5 . A tester for the compressed resilience of silk cotton based on a lead screw according to claim 4 , characterized in that the tester further comprises a bottom plate ( 5 ), on which both the frame and the drive assembly are fixed. 6 . the 6 . A tester for the compressed resilience of silk cotton based on a lead screw according to claim 5 , wherein the weights of the upper weight and the lower weight are both 2 kg. 7 . the

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