CN217084542U

CN217084542U - Positioning device for testing hardness of vulcanized rubber by Shore hardness tester

Info

Publication number: CN217084542U
Application number: CN202220125331.8U
Authority: CN
Inventors: 杨素; 李小娈; 周贺飞
Original assignee: Sailun Jinyu Group Co Ltd
Current assignee: Sailun Jinyu Group Co Ltd
Priority date: 2022-01-18
Filing date: 2022-01-18
Publication date: 2022-07-29
Anticipated expiration: 2032-01-18

Abstract

The utility model relates to a rubber hardness measurement equipment field, concretely relates to a positioner that is used for shao shi durometer to test vulcanized rubber hardness. The upper bracket is provided with a strip-shaped clamping groove, and the upper surface of the upper bracket is provided with a graduated scale arranged along the long edge of the clamping groove. The clamping groove is internally provided with a moving structure for adjusting the front position and the rear position of the hardness meter, and the clamping groove is close to a laser which can slide back and forth on the long edge of the graduated scale. A rotary measuring platform is arranged on the base and comprises a fixed disc and a rotary disc; the rotary disk is rotatably arranged on the fixed disk through a rotating structure, the rotary disk rotates for a fixed angle every time, and a clamping claw structure used for fixing a sample is arranged on the upper surface of the rotary disk. The utility model has the advantages of simple overall structure, convenient operation, the rate of accuracy is high, facilitate promotion.

Description

Positioning device for testing hardness of vulcanized rubber by Shore hardness tester

Technical Field

The utility model relates to a rubber hardness measurement equipment field, concretely relates to a positioner that is used for shao shi durometer to test vulcanized rubber hardness.

Background

The rubber hardness tester runs through the whole loop chain in the whole process of equipment design, development, production test and maintenance, and is mainly used for testing the hardness of rubber, plastics, shock absorption, sealing elements and other high polymer materials and parts, such as: and testing the hardness of various rubber compounds, tires, vulcanized rubber blocks, shock absorbing pieces, cable sheaths, various pipelines and various nested parts.

The most widely used rubber durometer at present is the shore durometer, which presses a pressing pin with a certain shape into a rubber sample to form a pressing depth, and then converts the pressing depth into a hardness value. The national standard requires that the size of the test sample has enough area, the distance between the measurement position of the Shore A hardness tester and the measurement position of the Shore D hardness tester are respectively at least 12mm from any edge, and the distance between the test point and the test point is at least 6 mm.

Fig. 1 shows a structure of a common shore durometer, which includes an upper bracket 1, a durometer 2, a measuring platform 3, a base 4, and a support rod 5. In use, a sample is placed on the measuring platform 3 and the test site is confirmed manually. Because the sample can not be fixed and the distance between the test points can not be accurately confirmed; therefore, the sample test point needs to be confirmed before each test, so that the test efficiency is low, random errors are easy to generate, and the accuracy of the result is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a positioner that is used for shao shi durometer to try vulcanized rubber hardness, its aim at overcome with the position of artifical affirmation test point, lead to the problem that test distance is inaccurate, test efficiency is low.

In order to achieve the above purpose, the technical scheme of the utility model is that:

the utility model provides a positioning device for testing the hardness of vulcanized rubber by a shore durometer, which comprises an upper bracket and a base; the method is characterized in that:

the upper bracket is provided with a strip-shaped clamping groove, and the upper surface of the upper bracket is provided with a graduated scale arranged along the long edge of the clamping groove. The clamping groove is internally provided with a moving structure for adjusting the front position and the rear position of the hardness meter, and the clamping groove is close to a laser which can slide back and forth on the long edge of the graduated scale.

A rotary measuring platform is arranged on the base and comprises a fixed disc and a rotary disc; the rotary disk is rotatably arranged on the fixed disk through a rotating structure, the rotary disk rotates for a fixed angle every time, and a clamping claw structure used for fixing a sample is arranged on the upper surface of the rotary disk.

Further, the mobile structure is including being provided with the fixed block that runs through the screw hole, with the lead screw that the screw hole matches and setting are in the handle of lead screw tip.

Further, a sliding block is arranged on the side wall of the laser, a sliding groove matched with the sliding block is formed in the side wall of the clamping groove, the sliding block is embedded into the sliding groove, and the laser moves back and forth along the sliding groove.

Further, a set screw is arranged on the laser.

Further, the fixed angle has a value of 72 °.

Furthermore, revolution mechanic is including setting up the fixed disk upper surface is followed the connecting axle that the fixed disk axis set up and five edges the radial lug that sets up of fixed disk still including setting up the rotary disk lower surface with the shaft slot that the connecting axle matches and five with the recess of lug one-to-one. The connecting shaft is movably embedded into the shaft groove, and the lug and the groove are uniformly distributed in a circumferential mode.

Further, the cross section of the lug is semicircular.

Further, the length of the connecting shaft is larger than the height of the bump.

Furthermore, the rotating structure comprises a connecting shaft arranged on the upper surface of the fixed disc along the axis of the fixed disc, a shaft groove arranged on the lower surface of the rotating disc and matched with the connecting shaft, five limiting grooves arranged on the side wall of the rotating disc, a limiting rod arranged on the base and a limiting spring; the limiting grooves are evenly distributed in a circumferential mode.

Furthermore, the jaw structure comprises a plurality of fixed steel sheets, a plurality of springs and a plurality of limiting steel sheets.

The utility model discloses the beneficial effect who reaches does:

the utility model discloses use on the test of shore durometer test vulcanize hardness, confirm sample border position through removing the laser instrument, later the rethread removes the sclerometer and realizes the determination to sample surface initial test point, confirms other test points on sample surface through rotating the rotary disk at last. The utility model has the advantages of simple overall structure, convenient operation, the rate of accuracy is high, facilitate promotion.

Drawings

Fig. 1 is a schematic structural diagram of a conventional shore durometer.

Fig. 2 is a schematic view of the overall structure of the present invention.

Fig. 3 is a partially enlarged view of the upper bracket.

FIG. 4 is a partial enlarged view of the rotary measuring platform of embodiment 1.

FIG. 5 is a partially enlarged view of a rotary measuring platform according to embodiment 2.

In the figure, 1, an upper bracket; 11. a card slot; 12. a graduated scale; 13. a laser; 14. a fixed block; 15. a lead screw; 16. a handle; 2. a hardness meter; 3. a measuring platform; 4. a base; 5. a support bar; 6. rotating the measuring platform; 61. fixing the disc; 611. a bump; 62. rotating the disc; 621. a limiting groove; 63. a connecting shaft; 64. a jaw structure; 641. fixing the steel sheet; 642. a spring; 643. limiting steel sheets; 65. a limiting rod; 66. and a limiting spring.

Detailed Description

To facilitate understanding of the present invention for those skilled in the art, embodiments of the present invention will be described below with reference to the accompanying drawings.

Example 1

As shown in fig. 2, the utility model discloses a positioner that is used for shao shi durometer to try vulcanized rubber hardness is an improvement to current shao shi durometer, makes each test point on its definite sample that can be simple and accurate, and the shao shi durometer after the improvement includes upper bracket 1, sclerometer 2, base 4, bracing piece 5 and rotatory measuring platform 6, upper bracket 1 passes through bracing piece 5 is fixed directly over base 4, the mobilizable setting of sclerometer 2 is in on the upper bracket 1, rotatory measuring platform 6 is fixed on the base 4.

As shown in fig. 3, the upper bracket 1 is provided with a strip-shaped slot 11, and the upper surface of the upper bracket 1 is provided with a scale 12 arranged along the long side of the slot 11. A moving structure for adjusting the front and rear positions of the hardness meter 2 is arranged in the clamping groove 11, and a laser 13 is arranged on the long edge of the clamping groove 11, which is close to the graduated scale 12 and can slide front and rear.

The moving structure comprises a fixing block 14 provided with a through screw hole, a lead screw 15 matched with the screw hole and a handle 16 arranged at the end part of the lead screw 15. The lead screw 15 penetrates through the clamping groove 11, one end of the lead screw 15 extends out of the upper support 1, the handle 16 is arranged at the end, and the lead screw 15 can be driven to rotate together by rotating the handle 16. The two ends of the fixing block 14 are tightly attached to the two long edges of the clamping groove 11, the fixing block 14 can slide back and forth along the long edges of the clamping groove 11, the fixing block 14 is embedded on the screw rod 15, the hardness tester 2 is arranged on the fixing block 14, the fixing block 14 can be driven to move back and forth by rotating the screw rod 15, and then the hardness tester 2 is driven to move back and forth.

Further, in order to facilitate the determination of the position of the pressing pin of the hardness tester 2, a mark is arranged on the side wall of the fixed block 14 close to the graduated scale 12, and the mark and the axis of the pressing pin are in the same vertical plane.

The side wall of the laser 13 is provided with a sliding block, the side wall of the clamping groove 11 is provided with a sliding groove matched with the sliding block, the sliding block is embedded into the sliding groove, and the laser 13 moves back and forth along the sliding groove.

Further, a set screw is provided on the laser 13. When the laser 13 is moved to the proper position, the laser 13 can be fixed by tightening the set screw in such a way that the tip of the set screw abuts against the upper surface of the upper bracket 1.

As shown in fig. 4, a rotary measuring platform 6 is arranged on the base 4, and the rotary measuring platform 6 comprises a fixed disc 61 and a rotating disc 62; the rotating disk 62 is rotatably disposed on the fixed disk 61 by a rotating structure, and the rotating disk 62 rotates by a fixed angle, specifically, the fixed angle has a value of 72 °. The upper surface of the rotating disc 62 is provided with a jaw structure 64 for fixing a sample.

The rotating structure comprises a connecting shaft 63 arranged on the upper surface of the fixed disc 61 along the axis of the fixed disc 61, five convex blocks 611 arranged along the radial direction of the fixed disc 61, a shaft groove arranged on the lower surface of the rotating disc 62 and matched with the connecting shaft 63, and five grooves corresponding to the convex blocks 611 one to one. The protruding block 611 and the groove are equally circumferentially arranged. The connecting shaft 63 is movably embedded in the shaft groove, and the rotating disc 62 can rotate around the connecting shaft 63 and can also move up and down along the connecting shaft 63. When rotating, firstly, the rotating disc 62 is lifted upwards, so that the lug 611 is separated from the groove, and the rotating disc 62 is rotated; when the protrusion 611 and the groove are sensed to be fitted again, the rotary plate 62 is lowered so that the rotary plate 62 is fixedly rotated by 72 °.

Further, in order to make the rotating disc 62 rotate more smoothly, the cross-sectional shape of the protrusion 611 is semicircular.

Further, in order that the connecting shaft 63 does not fall out of the shaft groove when the rotating disk 62 moves upward, the length of the connecting shaft 63 is greater than the height of the projection 611.

The jaw structure 64 includes a plurality of fixed steel sheets 641, a plurality of springs 642 and a plurality of limiting steel sheets 643. One end of the spring 642 is fixed on the fixing steel sheet 641, and the other end is fixed on the limiting steel sheet 643. The fixed steel sheet 641 is fixed on the upper surface of the rotating disc 62, and the fixed steel sheet 641 is equally divided into circles. When a sample is placed, the sample is clamped by the limiting steel sheet 643, the spring 642 is compressed, and the spring 642 applies a pressure to the sample, so that the sample is firmly limited in the middle of the rotating disk 62.

When measuring the hardness of vulcanized rubber, firstly selecting a sample with a proper size, clamping the sample in a jaw structure 64, and then moving a laser 13 to determine the edge of the sample and fixing the sample; then, the screw rod 15 is rotated to adjust the position of the hardness tester 2, so that the distance between the pressing pin of the hardness tester 2 and the edge of the sample meets the test requirement; after which a hardness test is performed. After the test of the test point is completed, the rotating disk 62 is rotated to determine the next test point, and the test is performed again until the test is completed.

Example 2

Except for the rotating structure, the other structures of this embodiment are the same as those of embodiment 1, and the description of this embodiment of the same structure is omitted.

As shown in fig. 5, the rotating structure includes a connecting shaft 63 disposed on the upper surface of the fixed disk 61 along the axis of the fixed disk 61, a shaft groove disposed on the lower surface of the rotating disk 62 and matching with the connecting shaft 63, five limiting grooves 621 disposed on the side wall of the rotating disk 62, a limiting rod 65 and a limiting spring 66. Wherein, the limiting groove 621 is equally divided into a plurality of circles. One end of the limiting rod 65 is rotatably fixed on the upper surface of the base 4, and the other end of the limiting rod is matched with the limiting groove 621. One end of the spring 642 is fixed on the upper surface of the base 4, and the other end is fixed on the limiting rod 65.

In an initial state, one end of the stopper rod 65 is inserted into the stopper groove 621, and the rotating disk 62 is fixed and non-rotatable. At this time, the limiting spring 66 is in a stretched state, and the limiting spring 66 applies a pulling force to the limiting rod 65, so that the limiting rod 65 is prevented from being disengaged from the limiting groove 621 due to unexpected factors such as vibration. When it is desired to rotate the rotating disk 62, the stopper rod 65 is pulled upward, and the stopper spring 66 is further extended, so that the stopper rod 65 is released from the stopper groove 621. And until the next limiting groove 621 is aligned with the limiting rod 65, loosening the limiting rod 65 to enable the limiting rod 65 to be embedded into the limiting groove 621 again. At this point, the rotating disc 62 has rotated 72 °.

The above-mentioned embodiments of the present invention do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A positioning device for testing hardness of vulcanized rubber by a Shore durometer comprises an upper bracket (1) and a base (4); the method is characterized in that:

the upper bracket (1) is provided with a strip-shaped clamping groove (11), and the upper surface of the upper bracket (1) is provided with a graduated scale (12) arranged along the long edge of the clamping groove (11); a moving structure for adjusting the front and back positions of the hardness meter (2) is arranged in the clamping groove (11), and a laser (13) is arranged on the long edge of the clamping groove (11) close to the graduated scale (12) in a front and back sliding manner;

a rotary measuring platform (6) is arranged on the base (4), and the rotary measuring platform (6) comprises a fixed disc (61) and a rotary disc (62); the rotary disk (62) is rotatably arranged on the fixed disk (61) through a rotating structure, the rotary disk (62) rotates for a fixed angle each time, and a claw structure (64) for fixing a sample is arranged on the upper surface of the rotary disk (62).

2. The positioning device for shore durometer hardness testing of vulcanized rubber according to claim 1, wherein: the movable structure comprises a fixing block (14) penetrating through a screw hole, a lead screw (15) matched with the screw hole and a handle (16) arranged at the end part of the lead screw (15).

3. The positioning device for shore durometer hardness testing of vulcanized rubber according to claim 1, wherein: the side wall of the laser (13) is provided with a sliding block, the side wall of the clamping groove (11) is provided with a sliding groove matched with the sliding block, the sliding block is embedded into the sliding groove, and the laser (13) moves back and forth along the sliding groove.

4. A positioning device for shore durometer hardness testing of vulcanized rubber according to claim 3, wherein: and a set screw is arranged on the laser (13).

5. The positioning device for testing hardness of vulcanized rubber by using a Shore durometer according to any one of claims 1 to 4, wherein the positioning device comprises: the fixed angle has a value of 72 °.

6. The positioning device for shore durometer hardness testing of vulcanized rubber according to claim 5, wherein: the rotating structure comprises a connecting shaft (63) arranged on the upper surface of the fixed disc (61) along the axis of the fixed disc (61), five convex blocks (611) arranged along the radial direction of the fixed disc (61), a shaft groove arranged on the lower surface of the rotating disc (62) and matched with the connecting shaft (63), and five grooves corresponding to the convex blocks (611) one by one; the connecting shaft (63) is movably embedded into the shaft groove, and the lug (611) and the groove are uniformly distributed in a circumferential mode.

7. The positioning device for shore durometer hardness testing of vulcanized rubber according to claim 6, wherein: the cross-sectional shape of the projection (611) is semi-circular.

8. The positioning device for shore durometer hardness testing of vulcanized rubber according to claim 7, wherein: the length of the connecting shaft (63) is greater than the height of the projection (611).

9. The positioning device for shore durometer hardness testing of vulcanized rubber according to claim 5, wherein: the rotating structure comprises a connecting shaft (63) arranged on the upper surface of the fixed disc (61) along the axis of the fixed disc (61), a shaft groove arranged on the lower surface of the rotating disc (62) and matched with the connecting shaft (63), five limiting grooves (621) arranged on the side wall of the rotating disc (62), a limiting rod (65) arranged on the base (4) and a limiting spring (66); the limiting grooves (621) are uniformly distributed in a circumferential mode.

10. The positioning device for shore durometer hardness testing of vulcanized rubber according to any one of claims 6 to 9, wherein: the claw structure (64) comprises a plurality of fixed steel sheets (641), a plurality of springs (642) and a plurality of limiting steel sheets (643).