CN219608609U

CN219608609U - Rubber compression permanent deformation test bed

Info

Publication number: CN219608609U
Application number: CN202320072261.9U
Authority: CN
Inventors: 李国军
Original assignee: Mann and Hummel Filter Shanghai Co Ltd
Current assignee: Mann and Hummel Filter Shanghai Co Ltd
Priority date: 2023-01-10
Filing date: 2023-01-10
Publication date: 2023-08-29
Anticipated expiration: 2033-01-10

Abstract

The utility model relates to a rubber compression set test bed, which comprises a base (1), a height limiting swivel (2) and an upper cover (3), wherein the height limiting swivel (2) is sleeved on the base (1), the upper cover (3) is placed on the height limiting swivel (2), and the upper cover (3) is connected with the base (1) through a screw (4); the base (1) is a cylinder, and a vertical cutting cylinder (11) is arranged below the base (1); the upper part of the base (1) is provided with a blind hole (12) and an internal thread; the upper cover (3) is a disc; the upper cover (3) is provided with a round through hole (31) at a position corresponding to the blind hole (12); a central through hole (32) is formed in the central position of the upper cover (3); a fan ring (21) is arranged above the height limiting swivel (2). Compared with the prior art, the utility model has the advantages of simple sample preparation, accurate result and reduced spare parts.

Description

Rubber compression permanent deformation test bed

Technical Field

The utility model belongs to the technical field of rubber compression set testing, and relates to a rubber compression set test bed.

Background

The compression set test is to compress the thickness of the rubber sample by a certain proportion through a compression set platform, set for a certain time at a certain temperature, remove the pressure and measure the thickness reduction. At present, the test bed used for the compression set test of rubber mostly adopts limiters with different heights to adjust the compression ratio, and the limiters have fixed heights, so that the prepared sample height is required to be very accurate to ensure that the compression ratio required by the test is achieved.

Therefore, when rubber is manufactured, a sample with a size required for compression set is additionally manufactured, which increases the cost for manufacturing the mold and wastes rubber resources. And may not be able to sample from the product that has been manufactured because there is no restrictor of the desired height. Or errors caused by human factors during sampling affect the accuracy of the test.

Patent CN105784499a discloses a device and a method for measuring compression set, which comprises an upper compression plate, a lower compression plate, an adjustable height limiter and a bolt and nut assembly, wherein the center of the lower compression plate is provided with a screw hole, the adjustable height limiter is screwed into the screw hole, and the upper compression plate is fixed with the lower compression plate through the bolt and nut assembly. However, the patent cannot be fixed on a workbench, and bolts and nuts are not easy to screw down or unscrew; the adjustable height limiter is inside the device, whether the upper compression plate is in close contact with the adjustable height limiter is not easy to observe, and the situation that the experimental sample is not compressed to the required height can occur.

Patent CN211426079U discloses a rubber compression set device with flexible height adjustment, which comprises a pressing plate assembly composed of an upper pressing plate and a lower pressing plate and a bolt rod penetrating through the pressing plate assembly, wherein a height-adjustable steel limiter is fixed on the outer side of the bolt rod between adjacent pressing plates, and a sample is placed between the adjacent pressing plates. However, the patent cannot be fixed on a workbench, and bolts and nuts are not easy to screw down or unscrew; three steel limiters with adjustable heights are needed in the test, so that experimental errors caused by measurement can be increased; the parts of the patent are more, and the use process is more complicated.

Patent CN211740889U discloses a device for limiting compression deformation of rubber, which comprises a panel, a movable plate and a bottom plate, wherein the panel and the bottom plate are of a flat plate structure which are arranged in parallel up and down, the panel and the bottom plate are connected through a vertical guide post, and the movable plate is of a flat plate structure, is sleeved 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 a hand wheel through a bolt and a nut penetrating through a threaded hole of the panel, the movable plate is driven to move up and down by rotation of the hand wheel, and pressure is applied to a rubber sample to be measured between the movable plate and the bottom plate; the depth dial indicator is fixedly arranged on the side face of the movable plate, and the compression deformation height of the rubber sample to be measured can be measured in real time by utilizing the depth dial indicator. However, the movable plate of the patent cannot be guaranteed to be parallel to the bottom plate, and the average height of the rubber after compression cannot be measured by the depth dial indicator arranged on one side of the flat plate; the parts of the patent are more, the connection is more complicated, and the damaged parts are not easy to replace.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide the rubber compression set test bed which is simple in sample preparation, accurate in result and capable of reducing spare parts.

The aim of the utility model can be achieved by the following technical scheme:

according to one technical scheme, the rubber compression set test bed comprises a base, a height limiting swivel and an upper cover, wherein the height limiting swivel is sleeved on the base, the upper cover is placed on the height limiting swivel, and the upper cover is connected with the base through screws.

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

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

Further, a blind hole is formed in the upper portion of the base, and an internal thread is formed in the inner side of the blind hole.

Further, the top surface of the vertical cutting 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 round through hole at a position corresponding to the blind hole, and the diameter of the round through hole is larger than that of the blind hole.

Further, a central through hole is formed in the central position of the upper cover.

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

Further, a fan ring is arranged above the height limiting swivel.

Compared with the prior art, the utility model is improved in that the limiters with different heights are replaced by limiters with continuously variable heights.

Working principle: firstly, the thickness of a rubber sample is measured, and then the compressed height is calculated according to the compression rate required by the test. The height limiting swivel is screwed to be lower than the upper plane of the base, so that the upper cover and the base are guaranteed to be in full contact, and the position of the upper cover is limited by a screw to avoid sliding. The depth gauge can extend into the central through hole of the upper cover, the upper cover is lifted by rotating the height limiting swivel, and the numerical variation of the depth gauge is the height of the rubber after compression.

During testing, the rubber sample is placed on the upper plane of the base, the upper cover is placed on the sample and is pressed by the screw, and 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, the height of the compressed rubber sample is controlled through the height limiting swivel, and the compression set test can be completed by using samples with different thicknesses.

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

(1) The utility model can adjust the compressed height, so long as the upper and lower surfaces of the sample are ensured to be parallel, the sample can be directly sampled on the test piece or the sample piece, and the sample preparation is simple;

(2) According to the utility model, the compressed height of the samples with different thicknesses can be accurately calculated according to the required compression rate, so that the experimental error is effectively reduced, and the result is accurate;

(3) The height limiting swivel can automatically adjust the height, so that limiters with different heights are not needed to be arranged, only the needed height is needed to be measured by a depth meter, and parts are reduced.

Drawings

FIG. 1 is a schematic diagram showing the overall top view of a rubber compression set test stand in an embodiment of the present utility model;

FIG. 2 is a schematic diagram showing the overall front view of a rubber compression set test stand according to an embodiment of the present utility model;

FIG. 3 is a schematic top view of a base according to an embodiment of the present utility model;

FIG. 4 is a schematic front view of a base according to an embodiment of the present utility model;

FIG. 5 is a schematic top view of a height limiting swivel in an embodiment of the utility model;

FIG. 6 is a schematic elevational view of a height limiting swivel in accordance with an embodiment of the utility model;

FIG. 7 is a schematic top view of an upper cover according to an embodiment of the present utility model;

fig. 8 is a schematic front view of the upper cover according to the embodiment of the present utility model.

The figure indicates:

1-base, 11-vertical cutting cylinder, 12-blind hole, 2-height limiting swivel, 21-fan ring, 3-upper cover, 31-round surface through hole, 32-center through hole and 4-screw.

Detailed Description

The present utility model will be described in detail with reference to specific examples. The present embodiment is implemented on the premise of the technical scheme of the present utility model, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present utility model is not limited to the following examples.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying positive importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Examples:

a rubber compression set test bed is shown in figures 1 and 2, and mainly comprises a base 1, a height limiting swivel 2 sleeved on the base 1 and an upper cover 3 arranged on the height limiting swivel 2.

As shown in fig. 3 and 4, the base 1 is a cylinder, the side surface is provided with external threads, the lower part is provided with a vertical cutting cylinder 11 which can be fixed on a desktop support, the top is a horizontal plane for placing a sample, and the base is provided with three blind holes 12 which are distributed in an equidistant triangle manner, and is provided with internal threads, the direction of the central line of an equilateral triangle formed by connecting lines of the centers of the blind holes 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 holes 12.

As shown in fig. 5 and 6, the inner side of the height limiting swivel 2 is provided with internal threads, and four fan rings 21 are arranged above the internal threads and are equidistantly arranged, so that the height limiting swivel can be installed on the base 1, and the height limiting swivel can be adjusted by rotating.

As shown in fig. 7 and 8, the upper cover 3 is a disc, the diameter of the upper cover 3 is slightly larger than that of the base 1, a circular through hole 31 is also formed at a position corresponding to the blind hole 12 of the base 1, the diameter of the circular through hole 31 is slightly larger than that of the blind hole 12, a central through hole 32 is formed at a central position, and the diameter of the central through hole 32 is slightly larger than that of the circular through hole 31.

The diameter of the base 1 is 80mm; the diameter of the vertical cutting cylinder 11 is 70mm, and the distance between the two vertical cutting surfaces is 60mm; the blind hole 12 has a diameter of 8mm and a depth of 20mm, and is spaced 27mm from the center of the base 1. The outer diameter of the height limiting swivel 2 is 100mm; the arc of the sector ring 21 is pi/5. The diameter of the upper cover 3 is 90mm; the diameter of the round through hole 31 is 11mm, and the distance between the round through hole and the center of the upper cover 3 is 27mm; the diameter of the central through hole 32 is 13mm.

Working principle: firstly, the thickness of a rubber sample is measured, and then the compressed height is calculated according to the compression rate required by the test. The height limiting swivel 2 is screwed to be lower than the upper plane of the base 1, so that the upper cover 3 is ensured to be in full contact with the base 1, and the position of the upper cover 3 is limited by the screw 4 to avoid sliding. The depth gauge can extend from the central through hole 32 of the upper cover 3, the upper cover 3 is lifted by rotating the height limiting swivel 2, and the numerical variation of the depth gauge is the height of the rubber after compression.

In the test, a rubber sample is placed on the upper plane of the base 1, and the upper cover 3 is placed on the sample and pressed by 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 through the base 1 and the upper cover 3, the height of the compressed rubber sample is controlled by the height limiting swivel 2, and the compression set test can be completed by using samples with different thicknesses.

The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present utility model. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present utility model is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present utility model.

Claims

1. The rubber compression set test bed is characterized by comprising a base (1), a height limiting swivel (2) and an upper cover (3), wherein the height limiting swivel (2) is sleeved on the base (1), the upper cover (3) is placed on the height limiting swivel (2), and the upper cover (3) is connected with the base (1) through a screw (4).

2. The rubber compression set test bed according to claim 1, wherein the base (1) is a cylinder, and a vertical cutting cylinder (11) is arranged below the base (1).

3. A rubber compression set testing stand according to claim 2, characterized in that the side of the base (1) is provided with external threads.

4. A rubber compression set testing stand according to claim 2, characterized in that the upper part of the base (1) is provided with a blind hole (12), the inside of the blind hole (12) being provided with an internal thread.

5. The rubber compression set test stand according to claim 4, wherein the top surface of the vertical cutting cylinder (11) is larger than the outer edge of the blind hole (12).

6. The rubber compression set test stand according to claim 4, wherein the upper cover (3) is a disc, and the diameter of the upper cover (3) is larger than that of the base (1).

7. The rubber compression set test stand according to claim 6, wherein the upper cover (3) is provided with a circular through hole (31) at a position corresponding to the blind hole (12), and the diameter of the circular through hole (31) is larger than that of the blind hole (12).

8. The rubber compression set test stand according to claim 6, wherein the center of the upper cover (3) is provided with a center through hole (32).

9. A rubber compression set testing stand according to claim 1, characterized in that the inside of the height limiting swivel (2) is provided with an internal thread.

10. A rubber compression set test stand according to claim 1, characterized in that a fan ring (21) is provided above the height limiting swivel (2).