A shielding case production strength detection device

Abstract

The utility model relates to the technical field of shielding case for mobile phone mainboard, disclose a kind of strength detection device for shielding case production, including base and its above hardness tester, its characterized in that, the upside of base is equipped with placing table, one pair of support is respectively installed in the both sides of placing table, the clamping plate is rotatably connected between each pair of support, the lower side of each clamping plate is fixedly connected with clamping rod, the upper side of placing table is provided with the clamping plate drive mechanism of opening or closing each other of two clamping plates, the utility model is pushed hardness tester by hydraulic cylinder, when the hardness of shielding case placed on placing table is detected, pointer rod is installed on the side of hardness tester, rotating drum is pushed to rotate by spiral chute, drive gear ring to rotate, two clamping plates are indirectly pushed by gear plate and press shielding case from upside, avoid the displacement of shielding case when hardness tester exerts pressure on shielding case, to improve the precision of strength detection data.

Description

Technical Field

[0001] This utility model relates to the field of shielding cover technology for mobile phone motherboards, and in particular to a strength testing device for shielding cover production. Background Technology

[0002] The motherboard shield is a crucial component in the internal structure of a mobile phone. It is primarily designed to cover and protect critical electronic components on the motherboard, such as the processor and wireless communication module. This design not only helps protect these sensitive components from physical damage, but more importantly, the shield reduces electromagnetic interference, improving the overall stability and reliability of the phone. To ensure that the shield's hardness value meets the basic requirement of HRB≥60, in practice, the hardness of each shield needs to be tested. However, existing shield hardness testing devices generally suffer from a tendency to deviate during the hardness testing process.

[0003] For example, Chinese utility model patent CN218349983U discloses a testing device for the hardness and compressive strength of an automotive instrument panel shield. Although this solution uses a screw to push a limiting block to move, thereby driving a hardness tester to perform hardness and compressive strength tests on different positions of the shield, and the height of the hardness tester can be adjusted by an electric push rod to achieve hardness testing on shields of different thicknesses, when the hardness tester presses down on the shield, the lack of a positioning mechanism for the shield on the base may cause the shield to shift, which may lead to distortion of the hardness test data.

[0004] In view of this, a strength testing device for shielding cover production is proposed to solve the above problems. Utility Model Content

[0005] To address the technical problem of deviation occurring during the strength testing of shielding covers, this utility model provides a strength testing device for shielding cover production.

[0006] This utility model is achieved using the following technical solution: a strength testing device for shielding cover production, comprising a base and a hardness tester above it, a placement platform is installed on the upper side of the base, a pair of supports are installed on both sides of the placement platform, a clamp is rotatably connected between each pair of supports, a locking rod is fixedly connected to the lower side of each clamp, a clamp driving mechanism is provided above the placement platform to open or close the two clamps, and a hardness testing mechanism is provided on the upper side of the base to move the hardness tester up and down.

[0007] As a further improvement to the above solution, the clamping plate driving mechanism includes a pair of support plates fixedly connected to both sides of the base. A load-bearing platform is fixedly connected between the upper sides of the support plates on both sides. A pull plate is slidably connected between each pair of support plates. An adaptation groove is opened at the end of each pull plate near the placement platform. Each clamping rod is slidably connected to the inner side of the adaptation groove on the same side. A push plate is fixedly connected to the upper side of each pull plate. The push plate is slidably connected to the inner side of the support plates on both sides. A push plate driving mechanism is provided on the load-bearing platform to move the push plate between the two support plates.

[0008] As a further improvement to the above solution, the push plate driving mechanism includes slots respectively opened on the two load-bearing platforms, a toothed plate slidably connected to the inner side of each slot, a toothed ring meshing between the two toothed plates, a rotating cylinder fixedly connected to the lower side of the toothed ring, and a limiting support mechanism for limiting the rotating cylinder is provided between the two load-bearing platforms.

[0009] As a further improvement to the above solution, the limiting support mechanism includes a limiting seat fixedly connected between the two load-bearing platforms, the rotating cylinder is rotatably connected inside the limiting seat, and a rotating cylinder drive mechanism for rotating the rotating cylinder is provided on one side of the load-bearing platform.

[0010] As a further improvement to the above solution, the rotary drum drive mechanism includes multiple spiral grooves opened on the inner side of the rotary drum. The multiple spiral grooves are arranged in a circumferential array. The lower end of each spiral groove is connected to a straight groove opened on the inner side of the rotary drum. A pointer rod is slidably connected to the inner side of each spiral groove. One end of each of the multiple pointer rods is fixedly connected to the outer side of the hardness tester.

[0011] As a further improvement to the above solution, the hardness testing mechanism includes a limiting slide fixedly connected to the upper side of the support platform, a slider slidably connected to the limiting slide, the slider being fixedly connected to the upper end of the hardness tester, and a hydraulic cylinder mounted on the upper side of the limiting slide, the output end of the hydraulic cylinder extending downward and connected to the upper side of the slider.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. In this utility model, when a hardness tester is pushed by a hydraulic cylinder to test the hardness of a shield placed on a platform, the pointer rod installed on the side of the hardness tester drives the rotating cylinder to rotate through the spiral groove, which in turn drives the gear ring to rotate. The gear plate indirectly pushes the two clamping plates to press and fix the shield from above, thus preventing displacement when the hardness tester applies pressure to the shield and improving the accuracy of the strength test data.

[0014] 2. This utility model uses a pointer rod to drive the rotating cylinder to rotate, which in turn drives the clamping plate to open or close. When the hardness tester descends and moves the pointer rod to the spiral groove, the clamping plate closes first to fix and position the shielding cover. When the pointer rod moves to the linear groove, the gear ring does not rotate, the clamping plate stops swinging, and the hardness tester continues to descend until it comes into contact with the upper side of the shielding cover. When the test is completed, the pointer rod moves upward first to the linear groove, the hardness tester first disengages from the shielding cover, and then moves to the spiral groove. The gear ring rotates, driving the clamping plate to open. This is a one-stroke hydraulic cylinder pressing motion, which can automatically achieve the effect of positioning before testing. It has the advantages of convenient operation and high testing effect. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of a strength testing device for shielding cover production provided by this utility model;

[0016] Figure 2 for Figure 1 Side view;

[0017] Figure 3 for Figure 1 Top view;

[0018] Figure 4 for Figure 1 A schematic diagram of the exploded structure;

[0019] Figure 5 This is a cross-sectional view of the rotating drum in one embodiment of the present invention;

[0020] Figure 6 for Figure 1 Enlarged structural diagram at point A;

[0021] Figure 7 This is a schematic diagram of the pointer rod in one embodiment of the present invention.

[0022] Explanation of key symbols:

[0023] 1. Base; 2. Support plate; 3. Load-bearing platform; 4. Gear plate; 5. Hydraulic cylinder; 6. Limiting slide; 7. Slider; 8. Limiting seat; 9. Rotary cylinder; 10. Placement platform; 11. Hardness tester; 12. Clamping plate; 13. Slot; 14. Gear ring; 15. Push plate; 16. Pull plate; 17. Pointer rod; 18. Spiral slide; 19. Straight slide; 20. Support; 21. Adaptive slide; 22. Locking rod. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0025] Example:

[0026] Please combine Figures 1-3 This embodiment of a strength testing device for shielding cover production includes a base 1 and a hardness tester 11 above it. A placement platform 10 is installed on the upper side of the base 1. Please refer to... Figure 1 As shown, in this embodiment, a groove is formed on the placement platform 10 for placing the shielding cover.

[0027] Testing instrument: Hardness tester 11 is a Rockwell hardness tester.

[0028] Testing standard: Shielding cover hardness value HRB≥60;

[0029] Test process:

[0030] Step 1: Press the indenter of the hardness tester 11, which is usually a steel ball with a diameter of 1.588mm, into the surface of the shielding cover;

[0031] Step 2: First apply preload, then increase to the main load.

[0032] Step 3: After removing the main load, measure the difference in indentation depth and convert it to HRB hardness value.

[0033] Please combine Figure 6 As shown, a pair of supports 20 are installed on both sides of the placement platform 10, and a clamping plate 12 is rotatably connected between each pair of supports 20. In this embodiment, a friction pad is installed on one side of the clamping plate 12, which can improve the adhesion of the shielding cover.

[0034] Please combine Figure 6 As shown, each clamping plate 12 is fixedly connected to a clamping rod 22 on its lower side. A clamping plate driving mechanism is provided above the placement platform 10 to open or close the two clamping plates 12. A hardness testing mechanism is provided on the upper side of the base 1 to move the hardness tester 11 up and down.

[0035] Please combine Figure 6 As shown, the clamping plate driving mechanism includes a pair of support plates 2 fixedly connected to both sides of the base 1. A load-bearing platform 3 is fixedly connected between the upper sides of the support plates 2 on both sides. A pull plate 16 is slidably connected between each pair of support plates 2. Each pull plate 16 has an adaptation groove 21 at one end near the placement platform 10. Each locking rod 22 is slidably connected to the inner side of the adaptation groove 21 on the same side. A push plate 15 is fixedly connected to the upper side of each pull plate 16. The push plate 15 is slidably connected to the inner side of the support plates 2 on both sides. A push plate driving mechanism is provided on the load-bearing platform 3 to move the push plate 15 between the two support plates 2.

[0036] Please combine Figure 4As shown, the push plate drive mechanism includes slots 13 respectively opened on two load-bearing platforms 3. In this embodiment, the slots 13 are T-shaped slots. A toothed plate 4 is slidably connected to the inner side of each slot 13. A toothed ring 14 meshes between the two toothed plates 4. A rotating cylinder 9 is fixedly connected to the lower side of the toothed ring 14. A limiting support mechanism for limiting the rotating cylinder 9 is provided between the two load-bearing platforms 3.

[0037] When the rotating drum 9 drives the gear ring 14 to rotate clockwise, the two gear plates 4 on both sides move outward at the same time, causing the clamping plate 12 to swing, thereby fixing the shielding cover.

[0038] When the rotating drum 9 drives the gear ring 14 to reverse, the two gear plates 4 on both sides move inward at the same time, causing the clamping plate 12 to swing in the opposite direction, thereby releasing the shielding cover.

[0039] Please combine Figure 1 and Figure 2 As shown, the limiting support mechanism includes a limiting seat 8 fixedly connected between two load-bearing platforms 3. In this embodiment, the limiting seat 8 has a circular structure.

[0040] Please combine Figure 2 As shown, the rotating drum 9 is rotatably connected to the inner side of the limiting seat 8, and a rotating drum drive mechanism for rotating the rotating drum 9 is provided on one side of the load-bearing platform 3.

[0041] Please combine Figure 5 As shown, in this embodiment, the rotary drum drive mechanism includes two spiral grooves 18 opened inside the rotary drum 9. The two spiral grooves 18 are arranged in a circumferential array, and the lower end of each spiral groove 18 is connected to a straight groove 19 opened inside the rotary drum 9.

[0042] Please combine Figure 4 As shown, a pointer rod 17 is slidably connected to the inner side of each spiral groove 18. The top corner of the pointer rod 17 is rounded and polished. One end of each of the two pointer rods 17 is fixedly connected to the outer side of the hardness tester 11.

[0043] It should be noted that when the pointer rod 17 moves into the spiral groove 18, the rotating drum 9 rotates; when the pointer rod 17 moves into the linear groove 19, the rotating drum 9 does not rotate.

[0044] Please combine Figure 4 As shown, the hardness testing mechanism includes a limiting slide 6 fixedly connected to the upper side of the support platform 3, a slider 7 slidably connected to the limiting slide 6, the slider 7 being fixedly connected to the upper end of the hardness tester 11, and a hydraulic cylinder 5 installed on the upper side of the limiting slide 6, the output end of the hydraulic cylinder 5 extending downward and connected to the upper side of the slider 7.

[0045] The implementation principle of the strength testing device for shield production in this application embodiment is as follows: First, the shield is placed on the placement platform 10. The hydraulic cylinder 5 is activated to push the slider 7 downward, which directly pushes the hardness tester 11 downward. At this time, the pointer rod 17 on the outside of the hardness tester 11 moves in the spiral groove 18, which can push the rotating drum 9 to rotate, drive the upper gear ring 14 to rotate, thereby pushing the toothed plates 4 on both sides to move to both sides. Through the toothed plates 15, the pull plates 16 on both sides pull the clamping rod 22 outward, so that the clamping plates 12 on both sides rotate, realizing the preliminary positioning of the upper side of the shield. Then the hardness tester 11 continues to descend, and the pointer rod 17 moves to the linear groove 19. At this time, the rotating drum 9 and the toothed ring 14 do not rotate, and the hardness can be detected in real time after the lower end of the hardness tester 11 contacts the shield.

[0046] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A strength testing device for shielding cover production, comprising a base (1) and a hardness tester (11) above it, characterized in that, A placement platform (10) is installed on the upper side of the base (1). A pair of supports (20) are installed on both sides of the placement platform (10). A clamping plate (12) is rotatably connected between each pair of supports (20). A locking rod (22) is fixedly connected to the lower side of each clamping plate (12). A clamping plate driving mechanism is provided above the placement platform (10) to open or close the two clamping plates (12) to each other. A hardness testing mechanism is provided on the upper side of the base (1) to move the hardness tester (11) up and down.

2. The strength testing device for shielding cover production as described in claim 1, characterized in that, The clamping plate driving mechanism includes a pair of support plates (2) fixedly connected to both sides of the base (1). A load-bearing platform (3) is fixedly connected between the upper sides of the support plates (2) on both sides. A pull plate (16) is slidably connected between each pair of support plates (2). Each pull plate (16) has an adaptation groove (21) at one end near the placement platform (10). Each clamping rod (22) is slidably connected to the inner side of the adaptation groove (21) on the same side. A push plate (15) is fixedly connected to the upper side of each pull plate (16). The push plate (15) is slidably connected to the inner side of the support plates (2) on both sides. A push plate driving mechanism is provided on the load-bearing platform (3) to move the push plate (15) between the two support plates (2).

3. The strength testing device for shielding cover production as described in claim 2, characterized in that, The push plate driving mechanism includes slots (13) respectively opened on the two load-bearing platforms (3). A toothed plate (4) is slidably connected to the inner side of each slot (13). A toothed ring (14) meshes between the two toothed plates (4). A rotating cylinder (9) is fixedly connected to the lower side of the toothed ring (14). A limiting support mechanism for limiting the rotating cylinder (9) is provided between the two load-bearing platforms (3).

4. The strength testing device for shielding cover production as described in claim 3, characterized in that, The limiting support mechanism includes a limiting seat (8) fixedly connected between the two load-bearing platforms (3), the rotating cylinder (9) is rotatably connected to the inner side of the limiting seat (8), and a rotating cylinder drive mechanism for rotating the rotating cylinder (9) is provided on one side of the load-bearing platform (3).

5. The strength testing device for shielding cover production as described in claim 4, characterized in that, The rotary drum drive mechanism includes a plurality of spiral grooves (18) opened on the inner side of the rotary drum (9). The plurality of spiral grooves (18) are arranged in a circumferential array. The lower end of each spiral groove (18) is connected to a straight groove (19) opened on the inner side of the rotary drum (9). A pointer rod (17) is slidably connected to the inner side of each spiral groove (18). One end of the plurality of pointer rods (17) is fixedly connected to the outer side of the hardness tester (11).

6. The strength testing device for shielding cover production as described in claim 5, characterized in that, The hardness testing mechanism includes a limiting slide (6) fixedly connected to the upper side of the support platform (3), a slider (7) slidably connected on the limiting slide (6), the slider (7) being fixedly connected to the upper end of the hardness tester (11), a hydraulic cylinder (5) being installed on the upper side of the limiting slide (6), and the output end of the hydraulic cylinder (5) extending downward and connected to the upper side of the slider (7).

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