CN209820972U - Rubber low-temperature brittleness tester - Google Patents

Abstract

The utility model relates to a rubber low temperature fragility apparatus, comprises a workbench, be equipped with cooling device, clamping device and impact device on the workstation. The clamping device comprises a right-angle lifting frame arranged on the workbench, a lifting platform connected with the right-angle lifting frame in a sliding mode and a cylinder fixed on the right-angle lifting frame, and a piston rod of the cylinder is connected with the lifting platform. The cooling device comprises a cooling pool arranged on the workbench and a refrigerator connected with the cooling pool, cooling liquid is contained in the cooling pool, and the right-angle lifting frame is fixed on the bottom surface of the cooling pool. The impact device comprises an impact block arranged in the through hole, a slide rail is arranged on the right-angle lifting frame, a slide block is arranged in the slide rail, a pull rope is fixed on the slide block, and one end of the pull rope is fixed on the impact block. The utility model is used for the low temperature brittleness test of rubber has convenient operation, the wide technological effect of test range.

Description

Rubber low-temperature brittleness tester

Technical Field

The utility model belongs to the technical field of the technique of rubber low temperature test and specifically relates to a rubber low temperature brittleness apparatus is related to.

Background

The low-temperature brittleness tester for rubber is used to test the highest temperature of material under the specified condition when the sample is damaged by impact, i.e. the brittleness temperature, and can comparatively identify the service performance of plastics and other elastic materials under the low-temperature condition, and can test the brittleness temperature and the low-temperature performance of different rubber materials or vulcanized rubbers with different formulas. Therefore, the method is indispensable in the aspects of quality inspection of scientific research materials and other products, control of production process and the like.

Rubber low temperature brittleness apparatus on the existing market uses vertical design for a large number of times, uses the cylinder to strike during the impact, and this kind of test mode reaction rate is fast, convenient operation, but because the power that the cylinder provided is unstable, has certain stirring, consequently need carry out the experiment many times repeatedly in the experimentation and just can obtain the highest destruction temperature of sample.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a detect more accurate rubber low temperature fragility apparatus.

The above object of the present invention can be achieved by the following technical solutions:

a rubber low-temperature brittleness tester comprises a workbench, wherein a cooling device, a clamping device and an impact device are arranged on the workbench;

the clamping device comprises a right-angle lifting frame arranged on the workbench, a lifting platform connected with the right-angle lifting frame in a sliding manner and a cylinder fixed on the right-angle lifting frame;

and a piston rod of the air cylinder is connected with the lifting platform.

Through adopting above-mentioned technical scheme, the cylinder can drive the sample spare on elevating platform and the elevating platform and enter into cooling device and cool off to remove the sample spare rapidly after the cooling is accomplished. The impact device acts to test the sample piece, and the mode has few steps, and the action speed of the cylinder is fast, so that the detection time can be effectively shortened, and the detection efficiency is improved.

The utility model discloses further set up to: the cooling device comprises a cooling pool arranged on the workbench and a refrigerator connected with the cooling pool;

the cooling pool is filled with cooling liquid;

the right-angle lifting frame is fixed on the bottom surface of the cooling pool.

Through adopting the technical scheme, the utility model provides a cooling device's concrete structure, the sample piece soaks cools off in the cooling bath, and the temperature descends rapidly, can shorten the time that the single detected, improves the efficiency in the whole testing process.

The utility model discloses further set up to: the upper surface of the lifting platform is provided with a groove.

Through adopting above-mentioned technical scheme, the displacement of sample piece can be restricted to the recess, avoids it to take place to remove at the impact in-process.

The utility model discloses further set up to: two vertical plates are symmetrically arranged on the upper surface of the lifting platform;

and a jacking screw is horizontally arranged on the vertical plate.

Through adopting above-mentioned technical scheme, the tight screw rod in top can be followed both sides and tightly pushed up the sample piece, and the specification of centre gripping sample piece is more, and application range is wider.

The utility model discloses further set up to: the right-angle lifting frame is provided with a through hole;

the impact device comprises an impact block arranged in the through hole.

Through adopting the technical scheme, the utility model discloses use the impact piece to test the appearance piece, the weight of impact piece can be adjusted at any time according to the experiment requirement to test the performance of appearance piece under different impact forces, detection range is bigger.

The utility model discloses further set up to: the right-angle lifting frame is provided with a slide rail; a sliding block is arranged in the sliding rail; a pull rope is fixed on the sliding block;

one end of the pull rope is fixed on the impact block.

Through adopting above-mentioned technical scheme, the slider is held to the staff in the testing process, and the sample piece is loosened after rising from the cooling bath, and the impact piece falls rapidly this moment. The test mode is simple to operate, the sample block can be tested after rising from the cooling pool, the detection time can be shortened, and the problem that the temperature rise of the sample block cannot meet the requirement is avoided.

The utility model discloses further set up to: the right-angle lifting frame is provided with a vertical rod; the vertical rod is hinged with a stop lever;

one end of the stop lever is abutted against the sliding block.

Through adopting above-mentioned technical scheme, the pin can block the slider, can guarantee on the one hand that the distance of falling of piece is the same at every turn strikeing, and another makes things convenient for the staff only to need to rotate the pin and just can make the impact piece whereabouts, has avoided long-time gripping, and the operation degree of difficulty further reduces.

The utility model discloses further set up to: a top rod is vertically arranged on the right-angle lifting frame;

the ejector rod is connected with the right-angle lifting frame in a sliding manner;

the ejector rod is positioned below the other end of the stop lever.

By adopting the technical scheme, the lifting platform pushes the ejector rod to move upwards in the rising process, the stop lever rotates when the ejector rod moves, the sliding block slides after the stop lever rotates, and the impact block falls. This process is gone on simultaneously along with the rising of elevating platform, and the time delay when can avoiding manual operation makes the sample piece follow the cooling bath and shifts out the time impact piece just can fall rapidly, can further reduce detection error, improves and detects the precision.

To sum up, the utility model discloses a beneficial technological effect does:

1. the utility model discloses well appearance piece is placed on the elevating platform, and the cylinder drives the elevating platform and gets into the cooling tank, makes its temperature drop to the requirement temperature, then takes out and tests it with percussion device from the cooling tank rapidly. The whole detection process is short in time and high in speed, the time spent in the whole detection process can be effectively shortened, and the detection efficiency is improved.

2. The utility model discloses use the impact piece to strike the appearance piece, the weight of impact piece can be adjusted according to the measuring requirement, and detection range is bigger, can carry out the test of different impact forces under the same temperature and the same impact force test under the different temperatures to the appearance piece.

3. In the testing process, the elevating platform rises the in-process and can promote the pin through the ejector pin and rotate to make the slider slide, the impact block falls simultaneously when the slider slides, this process takes place when the elevating platform rises to the assigned position, does not need manual operation, can effectively shorten the time that the appearance piece rises the back from the cooling tank and hit by the impact block, can make the temperature rise of appearance piece reduce as far as possible, guarantees the accuracy and the stability that detect.

Drawings

Fig. 1 is a schematic perspective view of embodiment 1 of the present invention.

Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.

Fig. 3 is a schematic view showing the connection of the elevating platform with the vertical plate and the jacking screw in embodiment 2.

In the figure, 11, a workbench; 21. a right-angle lifting frame; 22. a lifting platform; 23. a cylinder; 31. A cooling pool; 32. a refrigerator; 4. a groove; 51. a vertical plate; 52. tightly pushing the screw; 6. a through hole; 7. an impact block; 81. a slide rail; 82. a slider; 83. pulling a rope; 91. erecting a rod; 92. a stop lever; 93. and a push rod.

Detailed Description

Example 1

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, for the utility model discloses a rubber low temperature brittleness apparatus, including the workstation 11 that supports as the main part, cooling device, clamping device and impact device all install on workstation 11, and various operations in the testing process are all accomplished on workstation 11.

The cooling pool 31 and the refrigerator 32 are both arranged inside the workbench 11, the bottom surface of the cooling pool 31 is circular or rectangular, and a through hole with the same shape and size as the bottom surface of the cooling pool 31 is arranged on the table top of the workbench 11. The cooling pool 31 can be integrally formed with the top of the working table 11, and can also be welded or directly placed on a through hole of the top of the working table 11, or a bracket is placed in the working table 11 to support the cooling pool 31.

The operating principle of the refrigerator 32 is: refrigerant in the refrigerating system is sucked by a compressor, compressed into high-temperature and high-pressure gas, sent into a condenser to release heat, changed into high-temperature and high-pressure liquid, filtered by a drying filter, throttled by an expansion valve or a capillary tube, changed into low-temperature and low-pressure liquid, sent into an evaporator to absorb heat, changed into low-temperature and low-pressure gas, sucked by the compressor, and sequentially circulated to achieve the refrigerating effect. Therefore, the evaporator of the refrigerator 32 is attached to the bottom surface of the cooling tank 31 to perform a cooling operation, and this part of the contents belongs to the prior art, and is widely used in refrigerators, air conditioners and other devices and electric appliances.

The coolant is usually antifreeze fluid, which is poured into the cooling tank 31 during the experiment, and needs to be filled back into the bottle after the experiment is finished and when the coolant is not used for a long time, so as to prevent volatilization.

The right-angle crane 21 in the clamping device is composed of a vertical part and a horizontal part, wherein the lower end of the vertical part is fixed on the bottom surface of the cooling pool 31, and the horizontal part is positioned outside the cooling pool 31. The vertical part of the right-angle lifting frame 21 is provided with a track, the side surface of the lifting platform 22 is fixed with a slide block matched with the track, and the slide block is arranged on the track and can make the lifting platform 22 reciprocate in the vertical direction. The cylinder 23 is installed on the horizontal part of the right-angle crane 21, and the piston rod thereof is hinged on the lifting platform 22, so that the lifting platform 22 can be pushed to reciprocate in the vertical direction.

The upper surface of the lifting platform 22 is provided with a groove 4, and the sample block is placed in the groove 4.

The horizontal part of the right-angle lifting frame 21 is provided with a slide rail 81, the slide rail 81 is provided with a slide block 82, and the slide block 82 can freely slide in the slide rail 81. The impact block 7 is placed in the through hole 6 on the horizontal part of the right-angle lifting frame 21, and the outer diameter of the impact block is slightly smaller than the inner diameter of the through hole 6. One end of the pull cord 83 is tied to the slider 82 and the other end is tied to the impact block 7. The impact block 7 can slide freely in the through hole 6 and pull the slide 82 to move together.

A vertical rod 91 is fixed on the horizontal part of the right-angle lifting frame 21, and a stop lever 92 is hinged on the vertical rod 91 and can swing. The right-angle crane 21 is also provided with a hole in the horizontal portion thereof, and the ram 93 is located in the hole and is slidable in the vertical direction. One end of the stop lever 92 abuts against the slider 82, the other end of the stop lever is suspended, the ejector rod 93 is positioned below the suspended end, the stop lever 92 can be pushed to swing in the process of rising, one end of the stop lever 92 abutting against the slider 82 leaves the slider 82 when swinging, and the resistance on the slider 82 disappears. The impact block 7 applies a pulling force to the sliding block 82 through the pulling rope 83, the sliding block 82 starts to slide on the sliding rail 81 after the resistance received by the sliding block 82 disappears, and the impact block 7 falls downwards at the same time.

The implementation principle of the embodiment is as follows:

a sufficient amount of cooling liquid is injected into the cooling bath 31, and then the refrigerator 32 is started to lower the temperature of the cooling liquid to a desired temperature. While the sample block is placed in the recess on the lift table 22.

When the temperature of the cooling liquid is lowered to a predetermined temperature, the cylinder 23 is operated to push the lift table 22 into the cooling bath 31, and the sample block is cooled. When the time of the cooling stage reaches the requirement, the air cylinder 23 acts in one direction to pull the lifting table 22 back to the initial position.

During the raising of the lift table 22, the top surface thereof comes into contact with the lift pin 93 and pushes it to move upward. The push rod 93 pushes the stop lever 92 to swing in the rising process, when the stop lever 92 swings, one end of the stop lever 92 abutted to the slide block 82 leaves the slide block 82, the resistance received by the slide block 82 disappears, and the stop lever starts to slide on the slide rail 81 under the pulling of the impact block 7.

And after the impact block 7 impacts the sample block, one-time impact detection is completed. And replacing other sample blocks to continue the test. The lowest temperature at which at least two of the samples did not fail and the highest temperature at which at least one of the samples failed were determined and the test was ended when the two results differed by no more than 1 ℃.

Example 2

Referring to fig. 3, the structure in this embodiment is the same as most of the structure in embodiment 1,

the difference is that the groove 4 of the lifting platform 22 is changed into two parallel vertical plates 51, each vertical plate 51 is provided with a threaded hole with the axis parallel to the lifting platform 22, and the jacking screw rod 52 is installed in the threaded hole and can move in the horizontal direction while rotating.

The implementation principle of the embodiment is as follows: when the sample block is placed, the sample block is placed on the lifting table 22, and then the jacking screws 52 on the two vertical plates 51 are respectively rotated to jack the sample block tightly. Then, the detection is started, and the detection process is the same as that in embodiment 1, and is not described herein again.

In this embodiment, it is also desirable to use multiple blocks to perform the test, determine the minimum temperature at which at least two samples will not fail and the maximum temperature at which at least one sample will fail, and terminate the test when the two results differ by no more than 1 ℃.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (8)

1. The utility model provides a rubber low temperature brittleness apparatus, includes workstation (11), its characterized in that: the workbench (11) is provided with a cooling device, a clamping device and an impact device;

the clamping device comprises a right-angle lifting frame (21) arranged on the workbench (11), a lifting platform (22) connected with the right-angle lifting frame (21) in a sliding manner and a cylinder (23) fixed on the right-angle lifting frame (21);

and a piston rod of the air cylinder (23) is connected with the lifting platform (22).

2. The apparatus according to claim 1, wherein: the cooling device comprises a cooling pool (31) arranged on the workbench (11) and a refrigerator (32) connected with the cooling pool (31);

the cooling pool (31) is filled with cooling liquid;

the right-angle lifting frame (21) is fixed on the bottom surface of the cooling pool (31).

3. The apparatus according to claim 1, wherein: the upper surface of the lifting platform (22) is provided with a groove (4).

4. The apparatus according to claim 1, wherein: two vertical plates (51) are symmetrically arranged on the upper surface of the lifting platform (22);

and a jacking screw rod (52) is horizontally arranged on the vertical plate (51).

5. A rubber low temperature brittleness analyzer according to any one of claims 1-4, wherein: the right-angle lifting frame (21) is provided with a through hole (6);

the impact device comprises an impact block (7) arranged in the through hole (6).

6. The apparatus according to claim 5, wherein: a slide rail (81) is arranged on the right-angle lifting frame (21); a sliding block (82) is arranged in the sliding rail (81); a pull rope (83) is fixed on the sliding block (82);

one end of the pull rope (83) is fixed on the impact block (7).

7. The apparatus according to claim 6, wherein: the right-angle lifting frame (21) is provided with a vertical rod (91); a stop lever (92) is hinged on the vertical rod (91);

one end of the stop lever (92) abuts against the slider (82).

8. The apparatus according to claim 7, wherein: a top rod (93) is vertically arranged on the right-angle lifting frame (21);

the ejector rod (93) is connected with the right-angle lifting frame (21) in a sliding manner;

the ejector rod (93) is positioned below the other end of the stop lever (92).