CN219608609U - Rubber compression permanent deformation test bed - Google Patents

Abstract

The utility model relates to a rubber compression permanent deformation test bench, which comprises a base (1), a height limiting swivel (2) and an upper cover (3), and the height limiting swivel (2) is sleeved on the base (1), the upper cover (3) is placed on the height limit swivel (2), the upper cover (3) and the base (1) are connected by screws (4); the base (1 ) is a cylinder, and the bottom of the base (1) is provided with a vertical column (11); the top of the base (1) is provided with a blind hole (12) and an internal thread; the upper cover (3) It is a disc; the upper cover (3) is provided with a round surface through hole (31) at the position corresponding to the blind hole (12); the center position of the upper cover (3) is provided with a central through hole (32) ; A fan ring (21) is provided above the height limiting swivel (2). Compared with the prior art, the utility model has the advantages of simple sample preparation, accurate results and less spare parts.

Description

A rubber compression permanent deformation test bench

technical field

The utility model belongs to the technical field of rubber compression permanent deformation testing and relates to a rubber compression permanent deformation test bench.

Background technique

The rubber compression permanent deformation test is to compress the thickness of the rubber sample by a certain ratio through the compression deformation platform, and then remove the pressure after placing it at a certain temperature for a certain period of time, and measure the thickness reduction. At present, the test benches used in the rubber compression set test mostly use limiters of different heights to adjust the compression rate, and the limiters have a fixed height, which requires that the height of the prepared sample must be very accurate to ensure that the test requirements are met. the compression rate.

Therefore, when making rubber, it is necessary to make additional samples of the size required for compression set, which not only increases the cost of making molds, but also causes a waste of rubber resources. And it may not be possible to take samples from products that have already been made because there is no limiter for the required height. Or the error caused by human factors during sampling affects the accuracy of the test.

Patent CN105784499A discloses a measurement device and method for compression set, including an upper compression plate, a lower compression plate, an adjustable height limiter, and a bolt and nut assembly. The center of the lower compression plate is provided with a screw hole. The height-adjusting limiter is screwed into the screw hole, and the upper compression plate is fixed with the lower compression plate through a bolt and nut assembly. However, this patent cannot be fixed on the workbench, and it is not easy to tighten or loosen the bolts and nuts; the adjustable height limiter is inside the device, and it is not easy to observe whether the upper compression plate is in close contact with the adjustable height limiter, and the experimental sample may not be compressed to the desired height.

Patent CN211426079U discloses a rubber compression permanent deformation device with flexible adjustable limit height, which includes a pressing plate assembly composed of an upper pressing plate and a lower pressing plate and a bolt rod passing through the pressing plate assembly. Adjust the steel limiter, place the specimen between the adjacent platens. However, this patent cannot be fixed on the workbench, and it is not easy to tighten or loosen the bolts and nuts; three height-adjustable steel stoppers need to be used during the test, which will increase the experimental error caused by measurement; the parts of the patent More, the use process is more cumbersome.

Patent CN211740889U discloses a rubber compression deformation limiting device, including a panel, a movable plate and a bottom plate, wherein the panel and the bottom plate are flat plate structures arranged in parallel up and down, and the two are connected by vertical guide posts, and the movable plate is a flat plate structure , which is set on the guide post and can move up and down between the panel and the bottom plate along the guide post; the upper end of the movable plate is connected with the hand wheel through the bolt and nut passing through the threaded hole of the panel, and the movable plate is driven by the rotation of the hand wheel Move up and down, and apply pressure to the rubber sample to be measured between the movable plate and the bottom plate; a depth dial gauge is fixed on the side of the movable plate, and the depth dial gauge can be used to measure the compression deformation height of the rubber sample to be measured in real time. However, the movable plate of this patent cannot be guaranteed to be parallel to the bottom plate, and the depth gauge installed on one side of the plate cannot measure the average height of the rubber after compression; this patent has many parts, and the connection is more complicated, so it is not easy to damage the parts Make a replacement.

Utility model content

The purpose of this utility model is to provide a kind of rubber compression permanent deformation test bench in order to overcome the defects existing in the above-mentioned prior art. The utility model is simple in sample preparation, accurate in results, and reduces spare parts.

The purpose of this utility model can be achieved through the following technical solutions:

One of the technical solutions of the present invention is to provide a rubber compression permanent deformation test bench, which includes a base, a height limiting swivel and an upper cover, the height limiting swivel is sleeved on the base, and the The upper cover is placed on the height limiting swivel, and the upper cover and the base are connected by screws.

Further, the base is a cylinder, and a vertical cylinder is arranged below the base, which can be fixed on the desktop support.

Further, the side of the base is provided with external threads.

Further, the upper part of the base is provided with a blind hole, and the inner side of the blind hole is provided with internal threads.

Further, the top surface of the vertical cylinder is larger than the outer edge of the blind hole.

Further, the upper cover is a disc, and the diameter of the upper cover is larger than that of the base.

Further, the upper cover is provided with a circular through hole at the position corresponding to the blind hole, and the diameter of the circular through hole is larger than that of the blind hole.

Further, a central through hole is provided at the center of the upper cover.

Further, the inner side of the height limiting swivel is provided with an internal thread.

Further, a sector ring is provided above the height limiting swivel.

Compared with the prior art, the improvement of the utility model is that the limiters of different heights are replaced by limiters whose heights can be continuously changed.

Working principle: first measure the thickness of the rubber sample, and then calculate the height after compression through the compression ratio required for the test. Turn the height limiting swivel to the upper plane lower than the base to ensure that the upper cover is in full contact with the base, and use screws to limit the position of the upper cover to prevent it from sliding. The depth gauge can go deep through the central through hole of the upper cover, and the height limiting swivel is rotated to raise the upper cover, and the value change of the depth gauge is the height of the rubber after compression.

When testing, place the rubber sample on the upper plane of the base, place the upper cover on the sample and press it tightly with screws, so that the upper cover is in contact with the height limiting swivel. During the test, the rubber sample is compressed through the base and the upper cover, and the height of the compressed rubber sample is controlled by the height limiting swivel, so that the compression set test can be completed with samples of different thicknesses.

Compared with the prior art, the utility model has the following advantages:

(1) Because the utility model can adjust the height after compression, as long as the upper and lower surfaces of the sample are parallel, the sample can be directly sampled on the test piece or sample, and the sample preparation is simple;

(2) The height after compression can be accurately calculated according to the required compression rate for samples of different thicknesses in the utility model, so the experimental error is effectively reduced and the result is accurate;

(3) The height limiting swivel of the utility model can adjust the height by itself, so there is no need to be equipped with limiters of different heights, and only need to measure the required height with the depth to reduce spare parts.

Description of drawings

Fig. 1 is the overall top view structure schematic diagram of the rubber compression set test bench in the embodiment of the utility model;

Fig. 2 is a schematic diagram of the overall front view of the rubber compression set test bench in the embodiment of the present invention;

Fig. 3 is a top view structural schematic diagram of the base in the embodiment of the utility model;

Fig. 4 is a schematic diagram of the front view structure of the base in the embodiment of the utility model;

Fig. 5 is a top view structural schematic diagram of the height limiting swivel in the embodiment of the utility model;

Fig. 6 is a schematic diagram of the front view structure of the height limiting swivel in the embodiment of the utility model;

Fig. 7 is a top view structural schematic diagram of the upper cover in the embodiment of the utility model;

Fig. 8 is a schematic diagram of the front view of the upper cover in the embodiment of the present invention.

Instructions for marks in the figure:

1—base, 11—vertical cylinder, 12—blind hole, 2—height limit swivel, 21—fan ring, 3—top cover, 31—circular through hole, 32—center through hole, 4—screw.

Detailed ways

The utility model is described in detail below in conjunction with specific embodiments. This embodiment is carried out on the premise of the technical solution of the utility model, and the detailed implementation and specific operation process are given, but the protection scope of the utility model is not limited to the following examples.

In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, use a specific The azimuth structure and operation, therefore can not be construed as the limitation of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

Example:

A rubber compression set test bench, as shown in Figures 1 and 2, mainly consists of a base 1, a height limiting swivel 2 fitted on the base 1, and an upper cover 3 placed on the height limiting swivel 2.

As shown in Figures 3 and 4, the base 1 is a cylinder with external threads on the side and a vertical cylinder 11 below, which can be fixed on the desktop support. The top is a horizontal plane for placing samples, and there are three blind holes 12 in the shape of Arranged from a triangle, with internal threads, the direction of the center line of the equilateral triangle formed by the center line of the blind hole 12 is the vertical cutting direction of the vertical cutting cylinder 11 twice, and the top surface of the vertical cutting cylinder 11 is slightly larger than the outer edge of the blind hole 12 .

As shown in Figures 5 and 6, the inside of the height limiting swivel 2 has an internal thread, and there are four fan rings 21 arranged equidistantly above it, which can be installed on the base 1, and the height can be adjusted by rotation.

As shown in Figures 7 and 8, the loam cake 3 is a disc, and the diameter of the loam cake 3 is slightly larger than the base 1, and there is also a round surface through hole 31 at the position corresponding to the blind hole 12 of the base 1, and the diameter of the round surface through hole 31 The diameter is slightly larger than the diameter of the blind hole 12, and there is a central through hole 32 at the central position, and the diameter of the central through hole 32 is slightly larger than the diameter of the circular surface through hole 31.

The diameter of the base 1 is 80 mm; the diameter of the vertically cut cylinder 11 is 70 mm, and the distance between two vertical cut planes is 60 mm; the diameter of the blind hole 12 is 8 mm, the depth is 20 mm, and the center distance from the base 1 is 27 mm. The outer diameter of the height limiting swivel 2 is 100 mm; the radian of the fan ring 21 is π/5. The diameter of the upper cover 3 is 90 mm; the diameter of the circular through hole 31 is 11 mm, and the center distance from the upper cover 3 is 27 mm; the diameter of the central through hole 32 is 13 mm.

Working principle: first measure the thickness of the rubber sample, and then calculate the height after compression through the compression ratio required for the test. Rotate the height limiting swivel 2 to the upper plane lower than the base 1 to ensure that the upper cover 3 is in full contact with the base 1, and use screws 4 to limit the position of the upper cover 3 to prevent it from sliding. The depth gauge can go deep from the central through hole 32 of the upper cover 3, and the height limiting swivel 2 is rotated to raise the upper cover 3, and the value variation of the depth gauge is the height after rubber compression.

During the test, put the rubber sample on the upper plane of the base 1, place the upper cover 3 on the sample and press it tightly with the screw 4, so that the upper cover 3 is in contact with the height limiting swivel 2. During the test, the rubber sample is compressed by the base 1 and the upper cover 3, and the height of the compressed rubber sample is controlled by the height limiting swivel 2, so that the compression set test can be completed with samples of different thicknesses.

The above description of the embodiments is for those of ordinary skill in the technical field to understand and use the utility model. It is obvious that those skilled in the art can easily make various modifications to these embodiments, and apply the general principles described here to other embodiments without creative efforts. Therefore, the utility model is not limited to the above-mentioned embodiments, and improvements and modifications made by those skilled in the art according to the disclosure of the utility model without departing from the category of the utility model should be within the protection scope of the utility model.

Claims (10)

1. A rubber compression set test stand is characterized in that the test stand comprises a base (1), a height limit swivel (2) and a loam cake (3), and the height limit swivel (2) is socketed On the base (1), the upper cover (3) is placed on the height limiting swivel (2), and the upper cover (3) and the base (1) are connected by screws (4). 2. A rubber compression set test bench according to claim 1, characterized in that, the base (1) is a cylinder, and a vertical column (11) is arranged below the base (1). 3. A rubber compression set test bench according to claim 2, characterized in that, the side of the base (1) is provided with external threads. 4. A rubber compression set test bench according to claim 2, characterized in that, the upper part of the base (1) is provided with a blind hole (12), and the inner side of the blind hole (12) is provided with an internal thread . 5. A rubber compression set test bench according to claim 4, characterized in that, the top surface of the vertically cut cylinder (11) is larger than the outer edge of the blind hole (12). 6. A rubber compression set test bench according to claim 4, characterized in that the upper cover (3) is a disc, and the diameter of the upper cover (3) is larger than that of the base (1). 7. A kind of rubber compression set test bench according to claim 6, characterized in that, said upper cover (3) is provided with a round surface through hole (31) at the position corresponding to the blind hole (12), The diameter of the circular through hole (31) is greater than the diameter of the blind hole (12). 8. A rubber compression set test bench according to claim 6, characterized in that a central through hole (32) is provided at the center of the upper cover (3). 9. A rubber compression set test bench according to claim 1, characterized in that, the inner side of the height limiting swivel (2) is provided with an internal thread. 10. A rubber compression set test bench according to claim 1, characterized in that a fan ring (21) is provided above the height limiting swivel (2).