CN111678826A

CN111678826A - Abrasion-resistant tester for paper pulp molding

Info

Publication number: CN111678826A
Application number: CN202010666383.1A
Authority: CN
Inventors: 张红杰; 程芸; 张雪
Original assignee: China National Pulp and Paper Research Institute
Current assignee: China National Pulp and Paper Research Institute
Priority date: 2020-07-09
Filing date: 2020-07-09
Publication date: 2020-09-18
Anticipated expiration: 2040-07-09
Also published as: CN111678826B

Abstract

The invention provides a pulp molding wear-resisting tester which comprises a motor, a coupler, a support, a bottom plate, a screw rod, a sliding block, a shaft rod, a friction wheel, a balance weight wheel, a rotating arm, a support frame, a fastening screw, a proximity switch sensor and a motor control module. The motor passes through the shaft coupling and links to each other with the lead screw, and the slider is installed on the lead screw, and friction pulley and counter weight wheel are installed on the axostylus axostyle, and the axostylus axostyle passes through the bearing and installs on the swinging boom, and the swinging boom passes through the bearing and installs on the support frame, and proximity switch sensor installs the one end in the slider bottom, and motor, support frame and motor control module are. The device can provide friction loss detection of small-size pulp molding samples, and can better simulate the reciprocating friction loss condition of pulp molding products in actual use.

Description

Abrasion-resistant tester for paper pulp molding

Technical Field

The invention mainly relates to the field of performance test of pulp molding materials, in particular to a pulp molding wear-resistant tester.

Background

Plastic products are widely applied in the field of packaging due to low cost and excellent packaging performance, but corresponding environmental protection problems (such as difficult degradation) are gradually shown. In recent years, people have come out of the policy of limiting plastics of all countries after going deep into the understanding of the harm of the 'micro plastics'. The paper pulp molding product becomes a green packaging material which has the most potential to replace plastic products in the packaging market due to the advantages of renewable raw materials, degradable products and the like.

With the expansion of the application range of the pulp molded product (such as the linings of lunch boxes and mobile phone boxes), the product application needs to detect the wear resistance of the pulp molded product. At present, the measuring device for the wear resistance or the friction loss of paper and paperboard is mainly based on a wear-resistance tester of a T476 om-91 detection method of TAPPI, and the device cannot detect small-sized pulp molding samples and better simulate the reciprocating abrasion condition of pulp molding products.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a pulp molding wear-resistance testing device, which solves the problems of small-size pulp molding sample detection and better simulation of reciprocating abrasion.

In order to achieve the above purpose, the invention is realized by the following technical scheme: a pulp molding wear-resisting tester comprises a motor (1), a coupler (2), a support (3), a bottom plate (4), a screw rod (5), a sliding block (6), a shaft lever (7), a friction wheel (8), a counterweight wheel (9), a rotating arm (10), a support frame (11), a fastening screw (12), a proximity switch sensor (13) and a motor control module (14); motor (1) links to each other with lead screw (5) through shaft coupling (2), install on lead screw (5) slider (6), install on axostylus axostyle (7) friction pulley (8) and counter weight wheel (9), install on swinging boom (10) through the bearing axostylus axostyle (7), swinging boom (10) is installed on support frame (11) through the bearing, the one end in slider (6) bottom is installed in proximity switch sensor (13), motor (1), support (3), support frame (11) and motor control module (14) are fixed on bottom plate (4).

The motor control module (14) controls the direction, the speed, the displacement and the time of the horizontal movement of the sliding block (6) by adjusting the rotation of the motor (1).

The test sample is fixed on the sliding block (6) through a fastening screw (12), the width of the test sample is not less than 1cm, and the effective test length is not less than 3 cm.

The friction wheel (8) is arranged right above the sample, and the thickness of the friction wheel is not less than the width of the sample.

The weight of the counterweight wheel (9) is adjustable, and the diameter of the counterweight wheel is smaller than that of the friction wheel (8); the friction wheels (8) are arranged on two sides of the friction wheel (8) in pairs and are not contacted with the friction wheel (8).

The initial position of the slide block (6) in the test process is determined through a proximity switch sensor (13), and the moving round-trip radius of the slide block (6) is determined according to the effective length of the sample.

The invention has the beneficial effects that:

1. the invention adopts the motor (1) to control the sample on the sliding block (6) to horizontally reciprocate and drive the friction wheel (8) to rotate, thereby better simulating the reciprocating friction process of the pulp molding product in actual use.

2. The detection sample used by the invention has small size, the minimum width is 1cm, and the minimum effective length is 3cm, thereby greatly improving the detection range of the paper pulp molding sample.

Drawings

Fig. 1 is a first general structural diagram of the present invention.

Fig. 2 is a schematic diagram of the general structure of the present invention.

Wherein: the device comprises a motor 1, a coupler 2, a support 3, a bottom plate 4, a lead screw 5, a slide block 6, a shaft rod 7, a friction wheel 8, a counterweight wheel 9, a rotating arm 10, a support frame 11, a fastening screw 12, a proximity switch sensor 13 and a motor control module 14.

Detailed Description

The present invention is further described with reference to the following specific embodiments and the accompanying drawings, but it should be noted that these embodiments are only for illustrating the present invention and do not limit the scope of the present invention, and those skilled in the art can make various changes or modifications after reading the detailed description of the present invention, which fall within the limited scope of the present invention.

As shown in fig. 1 and 2, a pulp molding wear-resistance tester comprises a motor (1), a coupler (2), a bracket (3), a bottom plate (4), a screw rod (5), a slide block (6), a shaft rod (7), a friction wheel (8), a balance weight wheel (9), a rotating arm (10), a support frame (11), a fastening screw (12), a proximity switch sensor (13) and a motor control module (14); motor (1) links to each other with lead screw (5) through shaft coupling (2), install on lead screw (5) slider (6), install on axostylus axostyle (7) friction pulley (8) and counter weight wheel (9), install on swinging boom (10) through the bearing axostylus axostyle (7), swinging boom (10) is installed on support frame (11) through the bearing, the one end in slider (6) bottom is installed in proximity switch sensor (13), motor (1), support (3), support frame (11) and motor control module (14) are fixed on bottom plate (4).

The motor control module (14) controls the direction, speed, displacement and time of the movement of the sliding block (6) by adjusting the rotation of the motor (1).

The sample is fixed on the slide block (6) through a fastening screw (12), the width of the sample is 1.5cm, and the effective length is 5 cm.

In the embodiment, a grinding wheel with the thickness of 3cm and the granularity of 30# is preferably selected as a friction wheel (8), and the friction wheel (8) is placed right above the sample.

Selecting two weight wheels (9) with the mass of 200g, wherein the diameter of the weight wheels is smaller than that of the friction wheel (8); the friction wheels (8) are arranged on two sides of the friction wheel (8) in pairs and are not contacted with the friction wheel (8).

The specific testing process of the present embodiment is as follows:

1. and (3) opening a motor control module (14), and automatically calibrating the initial position (located at the central position of the sample to be tested) of the slide block (6) according to the proximity switch sensor (13).

2. A sample (such as the width of 1.5cm, the length of 7cm and the effective length of 5cm) with required size is prepared to be detected, and when a sample loading command is displayed on a display screen of a motor control module (14), the sample is fixed on a sliding block (6) through a fastening screw (12).

3. The rotating arm (10) is turned to one side far away from the slide block (6), a balance weight wheel (9), a friction wheel (8) and another balance weight wheel (9) are sequentially assembled on the shaft lever (7), and the rotating arm (10) is turned and carefully placed on a sample.

4. The effective length of the sample to be measured, the moving speed of the slide (6) and the detection time are input into a motor control module (14), and the motor (1) is started. During the detection, the slide (6) horizontally reciprocates at a set speed, and the reciprocating radius of the slide (6) is 2.5cm in the embodiment.

5. And after the motor (1) stops running, removing the worn fine scraps on the surface of the sample, taking down the sample, and determining the friction loss of the sample according to the mass difference of the sample before and after the test.

Claims

1. A pulp molding wear-resisting tester is characterized by comprising a motor, a coupler, a support, a bottom plate, a screw rod, a sliding block, a shaft lever, a friction wheel, a counterweight wheel, a rotating arm, a support frame, a fastening screw, a proximity switch sensor and a motor control module; the motor passes through the shaft coupling and links to each other with the lead screw, and the slider is installed on the lead screw, and friction pulley and counter weight wheel are installed on the axostylus axostyle, and the axostylus axostyle passes through the bearing and installs on the swinging boom, and the swinging boom passes through the bearing and installs on the support frame, and proximity switch sensor installs the one end in the slider bottom, and motor, support frame and motor control module are.

2. The pulp molding abrasion resistance tester according to claim 1, wherein the motor control module controls the direction, speed, displacement and time of the horizontal movement of the slider by adjusting the rotation of the motor.

3. The pulp molding abrasion resistance tester according to claim 1, wherein the test piece is fixed to the slider by a fastening screw, the width of the test piece is not less than 1cm, and the test effective length is not less than 3 cm.

4. The pulp molding abrasion resistance tester according to claim 1, wherein the friction wheel is placed directly above the test piece, and the thickness is not less than the width of the test piece.

5. The pulp molding abrasion resistance tester according to claim 1, wherein the weight wheel is adjustable in weight and has a diameter smaller than that of the friction wheel; the friction wheels are arranged on two sides of the friction wheel in pairs and are not in contact with the friction wheel.

6. The pulp molding abrasion resistance tester according to claim 1, wherein the initial position of the slider during the test is determined by the proximity switch sensor, and the reciprocating radius of the slider is determined according to the effective length of the test sample.