Rubber sealing ring compression performance detection device and detection method thereof

Abstract

The invention discloses a rubber sealing ring compression performance detection device and a detection method thereof.The rubber sealing ring compression performance detection device comprises a tensile machine, a mechanical arm, a feeding device and a discharging device, the tensile machine, the feeding device and the discharging device are arranged in a delta shape, and the feeding device and the discharging device are arranged on the two sides in front of the tensile machine; the mechanical arm is arranged between the feeding device and the discharging device. Through positioning of the mechanical arm, the central point of the rubber ring coincides with the force application axis of the tensile machine after the rubber sealing ring is placed on the compression device, the situation that the stress on one side of the rubber ring is large and the stress on the other side of the rubber ring is small in the detection process is avoided, and then the detection repetition precision is improved. According to the method for detecting the compression performance of the rubber sealing ring, the automation rate of the whole process from to-be-detected rubber ring feeding to detection completion and recovery is 100%, and the beneficial technical effects that the detection efficiency is high, and the influence of human factors in the detection process is small can be achieved.

Description

Technical Field

[0001] The invention relates to a compression performance detection device, in particular to a rubber sealing ring compression performance detection device and a detection method thereof. Background Art

[0002] The compression performance test of rubber sealing rings is mainly used to evaluate the performance of rubber sealing rings under compression. The purpose of this test is to characterize the performance of rubber sealing rings by testing the performance of the sealing rings under various pressures, such as compression rate, rebound rate, deformation, etc. The main process of the test is: 1. Place the rubber sealing ring to be tested in the compression tooling; 2. Start the detection equipment and perform product detection in the way of compression displacement control or compression force control; 3. After the detection is completed, record the test results, take out the rubber sealing ring, and complete the test of one product. In the prior art, there are the following problems: 1. There are fluctuations in the detection stability, which is mainly reflected in the fact that the rubber sealing ring compression test device usually places the product to be tested in two parallel pressure plates, but because the rubber sealing ring is difficult to place on the compression force axis of the tensile machine, there will be a systematic force value coaxiality offset, which will lead to fluctuations in the test results; 2. The detection efficiency is not high. Usually the detection process is manually operated, and the detection of a single product takes a long time. Especially when the detection task volume increases, this technical problem is more prominent. Application No. CN108572070A "A Rubber Sealing Ring Compression Elastic Modulus Tester" provides a rubber sealing ring compression modulus tester. Through the dynamic relationship curve between pressure and time, the cantilever structure of the probe can adapt to the test requirements of sealing rings of different diameters. Authorization Announcement No. CN213380156U "A O-shaped Rubber Sealing Ring Compression Tooling" can buffer the downward impact force of the electric telescopic rod by setting a support column, a sliding ring, a first buffer spring and a second buffer spring, avoiding direct stamping of the rubber sealing ring, thereby achieving the technical effect of protecting the rubber sealing ring during the compression test. Authorization Announcement No. CN204101268U "O-shaped Rubber Sealing Ring Compression Tooling" achieves the technical effect of detecting different compression amounts of different types of rubber rings by configuring detection grooves for various types of O-shaped rubber sealing rings. The above patents improve the technical effect of compression performance detection of rubber sealing rings from different technical perspectives, but none of them provide effective technical solutions in terms of the coaxiality and degree of automation of rubber ring detection. Summary of the invention

[0003] The purpose of the present invention is to provide a rubber sealing ring compression performance detection device and a detection method thereof, so as to solve the shortcomings of poor stability of detection results and low detection efficiency in the prior art.

[0004] The present invention is implemented by adopting the following technical scheme: a rubber sealing ring compression performance detection device, including a tensile testing machine, a mechanical arm, a loading device and a unloading device, the tensile testing machine, the loading device and the unloading device are arranged in a herringbone shape, the loading device and the unloading device are arranged on both sides in front of the tensile testing machine, and the mechanical arm is arranged between the loading device and the unloading device.

[0005] Furthermore, the tensile machine includes a tensile machine base, a tensile machine upright, a tensile machine force beam, a compression detection device and a tensile machine upper beam. The tensile machine upright has two uprights respectively arranged between the tensile machine base and the tensile machine upper beam. The tensile machine force beam is located between the tensile machine upright and the tensile machine base, and is also located between the tensile machine uprights. The tensile machine force beam moves along the axial direction of the tensile machine upright to provide a detection load.

[0006] Furthermore, the compression detection device includes two upper and lower compression structures, which are identical and symmetrically arranged, and are respectively arranged on the lower side of the upper beam of the tensile testing machine and the upper side of the force-applying beam of the tensile testing machine.

[0007] Furthermore, the compression structure of the compression detection device includes a pull rod, a clamp connector, a connecting rod, a clamp preload ring and a compression clamp working surface. One end of the pull rod is connected to the tensile machine and the other end is connected to the clamp connector through the connecting rod and is preloaded by the clamp preload ring. The compression clamp working surface is fixed at one end of the clamp connector. When working, the compression clamp working surfaces of the upper and lower compression structures approach each other and squeeze the sealing ring.

[0008] Furthermore, the feeding device includes a feeding device driving motor, a feeding device conveyor belt, and a feeding device positioning device. The feeding device driving motor drives the feeding device conveyor belt to make the sealing ring move on the feeding device conveyor belt. The feeding device positioning device is arranged on the feeding device conveyor belt. When the sealing ring moves to the feeding device positioning device and stops moving, the sealing ring is grabbed by the robotic arm.

[0009] Furthermore, the feeding device includes a feeding device driving motor, a feeding device conveyor belt and a rubber ring collection box. The feeding device driving motor drives the feeding device conveyor belt, and the rubber ring collection box is located at the end of the transmission direction of the feeding device conveyor belt.

[0010] A method for detecting the compression performance of a rubber sealing ring comprises the following steps: S1. The inspector places the rubber sealing ring to be inspected on the loading device; S2, the feeding device works, and the rubber sealing ring to be tested is transported to the designated position, and the mechanical arm clamps it and places it in the compression testing position of the tensile testing machine; S3, the tensile machine works to complete the compression performance test of the rubber sealing ring and obtain the test result data; S4, the robotic arm works to clamp the rubber sealing ring after inspection to the unloading device; S5, the unloading device works to convey the rubber sealing ring out of the detection unit after the detection; S6. Repeat steps S1 to S5 to complete the compression performance test of multiple rubber sealing rings.

[0011] The rubber sealing ring compression performance detection device and detection method described in the present invention have the following beneficial effects: (1) High detection repeatability accuracy. The present invention uses a mechanical arm to position the rubber sealing ring so that after the rubber sealing ring is placed on the compression device, the center point of the rubber ring coincides with the force axis of the tensile machine, ensuring that during the detection process, there will be no situation where one side of the rubber ring is subjected to greater force and the other side is subjected to less force, thereby improving the detection repeatability accuracy.

[0012] (2) The detection process has a high degree of automation. The rubber sealing ring compression performance detection method disclosed in the present invention has a 100% automation rate in the whole process from the loading of the rubber ring to be tested to the recovery after the test is completed, which can achieve the beneficial technical effects of high detection efficiency and small influence of human factors in the detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. The drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0014] Figure 1 It is a partial schematic diagram of the compression detection part of a rubber sealing ring compression performance detection device; Figure 2 It is the schematic diagram of the tensile machine; Figure 3 A top view of a rubber sealing ring compression performance testing device; In the figure, 1-tensile testing machine, 101-tensile testing machine base, 102-tensile testing machine upright, 103-tensile testing machine force beam, 104-compression detection device, 1041-pull rod, 1042-clamp connector, 1043-connecting rod, 1044-clamp preload ring, 1045-compression fixture working surface, 1046-rubber sealing ring in test, 105-tensile testing machine upper beam, 106-force beam upper limiter, 107-force beam lower limiter, 2-safety fence, 3-robotic arm, 4-feeding device, 41-feeding device driving motor, 42-feeding device conveyor belt, 43-feeding device positioning device, 44-feeding device position sensor 1, 45-rubber sealing ring to be inspected, 46-feeding device position sensor 2, 5-unloading device, 51-unloading device driving motor, 52-unloading device position sensor 1, 53-unloading device conveyor belt, 54-unloading device position sensor 2, 55-rubber ring collection box, 6-human-machine interaction panel. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] In this embodiment, Figures 1 to 3As shown, a rubber sealing ring compression performance detection device includes a tensile machine 1 and a mechanical arm 3. In a preferred embodiment, the tensile machine 1 is composed of a tensile machine base 101, a tensile machine upright 102, a tensile machine force beam 103, a compression detection device 104, a tensile machine upper beam 105, an upper limiter 106 on the force beam, and a lower limiter 107 on the force beam. Further, the tensile machine base 101, the tensile machine upright 102, and the tensile machine upper beam 105 constitute the main load-bearing structure of the tensile machine 1, which functions to ensure the overall stability of the tensile machine 1 and the transmission of the detection force value during the detection process. Further, the tensile machine force beam 103 is located between the tensile machine upright 102 and the tensile machine base 101, and is also located between the two tensile machine uprights 102. Its function is to apply the detection load by displacing along the length direction of the tensile machine upright 102. Further, the compression detection device 104 is located between the upper crossbeam 105 of the tensile machine and the force-applying crossbeam 103 of the tensile machine, and is set as two mutually independent devices with completely identical structures, respectively connected to the upper crossbeam 105 of the tensile machine and the force-applying crossbeam 103 of the tensile machine. The structure of one of them is described in detail here, which consists of a pull rod 1041, a clamp connector 1042, a connecting rod 1043, a clamp pre-tightening ring 1044, a compression clamp working surface 1045 and a rubber sealing ring 1046 in the test. Further, one end of the pull rod 1041 is connected to the tensile machine, and the other end is connected to the clamp connector 1042 through the connecting rod 1043, and is pre-tightened by the clamp pre-tightening ring 1044. Further, the rubber sealing ring 1046 in the test is located between the two compression clamp working surfaces 1045. During the test, the above structure is used to realize that the load applied by the tensile machine 1 finally acts on the rubber sealing ring 1046 in the test, so as to achieve the technical effect of compression detection. The mechanical arm 3 is an existing mature technology and will not be described in detail here.

[0018] In a preferred embodiment, a rubber sealing ring compression performance detection device also includes a safety fence 2, a feeding device 4 and a feeding device 5. Further, the function of the safety fence 2 is to reduce the probability of human injury. Further, the feeding device 4 includes a feeding device driving motor 41, a feeding device conveyor belt 42, a feeding device positioning device 43, a feeding device position sensor 1 44, a rubber sealing ring to be inspected 45 and a feeding device position sensor 2 46. In a preferred embodiment, the feeding device driving motor 41 is two with the same structure, which are respectively located on both sides of the feeding device conveyor belt 42, and its function is to provide energy for the feeding device conveyor belt 42. Further, a feeding device positioning device 43 is also provided on the feeding device conveyor belt 42, and its function is to be used in conjunction with the feeding device conveyor belt 42, and after the rubber sealing ring to be inspected 45 is positioned, it is convenient for the mechanical arm 3 to clamp it. Furthermore, the feeding device 4 is provided with a feeding device position sensor 1 44 and a feeding device position sensor 2 46 respectively located on both sides of the feeding device conveyor belt 42, and their function is to be used in conjunction with the feeding device conveyor belt 42 to start or stop the feeding device conveyor belt 42 according to the position of the rubber sealing ring 45 to be inspected.

[0019] In a preferred embodiment, the unloading device 5 includes an unloading device driving motor 51, an unloading device position sensor 1 52, an unloading device conveyor belt 53, an unloading device position sensor 2 54 and a rubber ring collection box 55. Further, the unloading device driving motor 51 is set to two with the same structure, which are respectively located on both sides of the unloading device conveyor belt 53, and its function is to provide energy for the operation of the unloading device conveyor belt 53. Further, the unloading device conveyor belt 53 is also provided with an unloading device position sensor 1 52 and an unloading device position sensor 2 54 on both sides, and its function is to be used in conjunction with the unloading device conveyor belt 53, and to start or stop the unloading device conveyor belt 53 according to the position of the rubber sealing ring after detection. Further, the unloading device 5 is also provided with a rubber ring collection box 55, and its function is to collect the rubber sealing ring after the detection is completed. In a preferred embodiment, the detection unit is also provided with a human-machine interaction panel 6, and its function is to enter the detection information of the rubber sealing ring to be detected. The input information at least includes: material brand of the rubber seal ring to be tested, test batch number, test method, outer diameter of the rubber seal ring to be tested and cross-sectional diameter of the rubber seal ring to be tested. Further, the human-machine interaction panel 6 is arranged on the safety fence 2 .

[0020] A method for detecting the compression performance of a rubber sealing ring comprises the following steps: S1. The operator enters the detection information on the human-machine interaction panel 6 and starts the detection unit; S2, the operator places the rubber seal ring 45 to be inspected on the side of the feeding device conveyor belt 42 outside the safety fence 2, and after the feeding device position sensor 2 46 senses the rubber seal ring 45 to be inspected, the feeding device conveyor belt 42 is started, and the rubber seal ring 45 to be inspected is transported inward along the feeding device conveyor belt 42; S3, the rubber seal ring 45 to be inspected is positioned at the delivery position under the joint action of the feeding device conveyor belt 42 and the feeding device positioning device 43. After being delivered to the delivery position, the feeding device position sensor 44 senses the rubber seal ring 45 to be inspected, and the feeding device conveyor belt 42 stops working; S4, the mechanical arm 3 works to clamp the rubber seal ring 45 to be inspected after positioning, and transfers it to between the two compression fixture working surfaces 1045. The final clamping position is controlled by the mechanical arm 3 to ensure that the center of the rubber seal ring 45 to be inspected is located on the compression force value axis of the tensile machine 1; S5, the mechanical arm 3 is withdrawn, the tensile testing machine 1 is put into operation, and the tensile testing machine force beam 103 is controlled according to the detection method to complete the compression detection of the rubber sealing ring 1046 in the test; S6. After the compression test is completed, the robot arm 3 works to clamp the rubber sealing ring to the fixed position of the unloading device 5, and after being sensed by the unloading device position sensor 52, the unloading device conveyor belt 53 works; S7, the rubber sealing ring is output from the detection unit under the conveyance of the unloading device conveyor belt 53, and falls into the rubber ring collection box 55. After the unloading device position sensor 2 54 senses the rubber sealing ring falling, the unloading device conveyor belt 53 stops working; S8. Repeat S2 to S7 to complete the compression performance test of the rubber sealing rings of this batch.

[0021] The above embodiments describe the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the changes and modifications made by those skilled in the art shall be within the scope of protection of the appended claims of the present invention without departing from the spirit and scope of the present invention.

Claims

1. A rubber sealing ring compression performance detection device, characterized in that: The invention comprises a tensile testing machine (1), a mechanical arm (3), a loading device (4) and a unloading device (5), wherein the tensile testing machine (1), the loading device (4) and the unloading device (5) are arranged in a herringbone shape, the loading device (4) and the unloading device (5) are arranged on both sides in front of the tensile testing machine (1), and the mechanical arm (3) is arranged between the loading device (4) and the unloading device (5).

2. A rubber sealing ring compression performance detection device according to claim 1, characterized in that: The tensile machine (1) comprises a tensile machine base (101), a tensile machine upright pole (102), a tensile machine force beam (103), a compression detection device (104) and a tensile machine upper beam (105); the tensile machine upright pole (102) has two respectively arranged between the tensile machine base (101) and the tensile machine upper beam (105); the tensile machine force beam (103) is located between the tensile machine upright pole (102) and the tensile machine base (101), and is also located between the tensile machine upright poles (102); the tensile machine force beam (103) moves along the axial direction of the tensile machine upright pole (102) to provide a detection load.

3. A rubber sealing ring compression performance detection device according to claim 2, characterized in that: The compression detection device (104) comprises two upper and lower compression structures, which are identical and symmetrically arranged, and are respectively arranged on the lower side of the upper crossbeam (105) of the tensile machine and the upper side of the force-applying crossbeam (103) of the tensile machine.

4. A rubber sealing ring compression performance detection device according to claim 3, characterized in that: The compression structure of the compression detection device (104) comprises a pull rod (1041), a fixture connector (1042), a connecting rod (1043), a fixture pre-tightening ring (1044) and a compression fixture working surface (1045); one end of the pull rod (1041) is connected to the tensile machine (1) and the other end is connected to the fixture connector (1042) via the connecting rod (1043) and is pre-tightened by the fixture pre-tightening ring (1044); the compression fixture working surface (1045) is fixed to one end of the fixture connector (1042); when working, the compression fixture working surfaces (1045) of the upper and lower compression structures approach each other and squeeze the sealing ring.

5. A rubber sealing ring compression performance detection device according to claim 1, characterized in that: The feeding device (4) comprises a feeding device driving motor (41), a feeding device conveyor belt (42), and a feeding device positioning device (43). The feeding device driving motor (41) drives the feeding device conveyor belt (42) to make the sealing ring move on the feeding device conveyor belt (42). The feeding device positioning device (43) is arranged on the feeding device conveyor belt (42). When the sealing ring moves to the feeding device positioning device (43) and stops moving, the sealing ring is grabbed by the mechanical arm (3).

6. A rubber sealing ring compression performance detection device according to claim 1, characterized in that: The unloading device (5) comprises an unloading device driving motor (51), an unloading device conveyor belt (53) and a rubber ring collection box (55); the unloading device driving motor (51) drives the unloading device conveyor belt (53); and the rubber ring collection box (55) is located at the end of the unloading device conveyor belt (53) in the transmission direction.

7. A method for detecting the compression performance of a rubber sealing ring, implemented by a rubber sealing ring compression performance detection device according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. The inspector places the rubber sealing ring to be inspected on the loading device; S2. The feeding device works to transfer the rubber sealing ring to be tested to the designated position, and the mechanical arm clamps it and places it in the compression testing position of the tensile testing machine; S3, the tensile machine works to complete the compression performance test of the rubber sealing ring and obtain the test result data; S4, the robotic arm works to clamp the rubber sealing ring after inspection to the unloading device; S5, the unloading device works to convey the rubber sealing ring out of the detection unit after the detection; S6. Repeat steps S1 to S5 to complete the compression performance test of multiple rubber sealing rings.

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