A hardness testing device for automobile fastener machining

Abstract

The utility model relates to the technical field of fastener test, specifically disclose a hardness testing device for automobile fastener processing, including operation platform, the axial outer wall sliding connection of operation platform has the sliding frame, and the inside of sliding frame is embedded with detection head, the axial top of operation platform is connected with the carousel that rotates, and the upper portion of carousel is provided with positioning mechanism, the positioning mechanism includes the electromagnet, the electromagnet is embedded in the inside of carousel, and the side of electromagnet top is provided with the accommodation groove that sets up, the utility model discloses through the electromagnet, the resistance to touch board, the piece that goes in and the permanent magnet block, and cooperate connecting rod, ball bearing and press the board, can when the same type fastener is detected after according to fastener size adjustment is finished, directly place into accommodation groove can carry out automatic clamping, and carry out positioning corresponding detection head, avoid when placing fastener needs multiple adjustments, lead to the workload is bigger and influence the whole detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of fastener testing technology, and in particular to a hardness testing device for automotive fastener processing. Background Technology

[0002] Automotive fasteners are mechanical parts used to connect and fix various automotive components (such as body, engine, chassis, interior, electronic systems, etc.) during the manufacturing, assembly, and maintenance of automobiles. Their core function is to ensure reliable connection between components, prevent loosening or falling off, and ensure the structural stability and safety of automobiles under complex working conditions such as driving, vibration, and temperature changes.

[0003] Most existing testing devices for testing the hardness of automotive fasteners have problems such as inconvenience in stabilizing the fasteners and lack of uniform feeding. This can easily lead to problems such as fastener breakage due to excessive pressure during hardness testing and fastener accumulation during feeding and transportation.

[0004] An existing patent (publication number: CN218239690U) discloses a hardness testing device for intelligent assembly and processing of automotive fasteners. This testing device is equipped with a positioning mechanism and a feeding mechanism, which causes two springs to drive two top blocks to abut against one side of the fastener, and causes the screw to push the movable plate to slide against the inner wall of the limiting groove to squeeze the other side of the fastener. This can stably clamp the fastener. In order to enable the testing device to fix and limit multiple fasteners, the safety of the testing device is effectively improved.

[0005] To address the aforementioned issues, while existing patents offer solutions that can hold and limit fasteners through the cooperation of components such as springs, in actual use, workers need to adjust the screws sequentially to achieve stable clamping, resulting in a high workload for workers. Summary of the Invention

[0006] The purpose of this invention is to provide a hardness testing device for automotive fastener processing. After the fastener size has been adjusted, when testing fasteners of the same type, the device can be directly placed into the mounting slot for automatic clamping and positioning of the corresponding testing head. This avoids the need for multiple adjustments when placing fasteners, which leads to a large workload and affects the efficiency of the entire testing process, thus solving the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a hardness testing device for automotive fastener processing, comprising an operating table, a sliding frame slidably connected to the axial outer wall of the operating table, and a detection head embedded inside the sliding frame; a turntable rotatably connected to the axial top end of the operating table, and a positioning mechanism provided above the turntable.

[0008] The positioning mechanism includes an electromagnet, which is embedded inside the turntable. A mounting groove is provided on one side of the electromagnet at the top of the turntable. A contact plate is slidably connected inside the mounting groove, and an insertion block is fixedly installed on the outer wall of the contact plate. A limiting back plate is fixedly installed at one end of the insertion block that penetrates the turntable. A permanent magnet block is fixedly installed on one side of the limiting back plate, and a first spring is fixedly installed on the other side of the limiting back plate.

[0009] Preferably, a connecting rod is inserted into the outer wall of the turntable, and an adjusting block is fixedly installed at one end of the connecting rod.

[0010] Preferably, the other end of the connecting rod is rotatably connected to a ball bearing, and a pressing plate is sleeved on the outside of the ball bearing.

[0011] Preferably, a connecting block is fixedly installed at the front end of the contact plate, and a limit mechanism is provided on one side of the connecting block.

[0012] Preferably, the limiting mechanism includes a sliding plate, which is slidably connected to the outside of the connecting block, and an insertion block is fixedly installed on the outer wall of the sliding plate.

[0013] Preferably, a second spring is fixedly installed at one end of the insertion block that passes through the turntable, and a third spring is fixedly installed at the front end of the sliding plate.

[0014] Preferably, a fixing rod is inserted inside the third spring, and a limit plate is fixedly installed at the front end of the fixing rod.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model uses an electromagnet, a contact plate, an insertion block, and a permanent magnet, along with a connecting rod, ball bearings, and a pressing plate, to automatically clamp fasteners and position them to the corresponding detection head after they have been adjusted according to their size. This avoids the need for multiple adjustments when placing fasteners, which would otherwise result in a large workload and affect the efficiency of the entire inspection process.

[0017] 2. This utility model, through the cooperation of a sliding plate, an insertion block, a second spring, a third spring, a fixing rod, and a limiting plate, can limit the fastener from both sides with the cooperation of the abutment plate, avoiding the situation where the detection head cannot correspond to the workpiece, avoiding the need for secondary auxiliary adjustment, and improving the overall convenience and automation of use. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is an overall structural view of the present invention;

[0020] Figure 2 This is a schematic diagram of the insertion block structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the connecting rod structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the insertion block structure of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Operating table; 2. Sliding frame; 3. Detection head; 4. Turntable; 5. Positioning mechanism; 501. Electromagnet; 502. Placement slot; 503. Contact plate; 504. Insertion block; 505. Limiting back plate; 506. Permanent magnet block; 507. First spring; 508. Connecting rod; 509. Adjusting block; 510. Ball bearing; 511. Pressing plate; 6. Connecting block; 7. Limiting mechanism; 701. Sliding plate; 702. Insertion block; 703. Second spring; 704. Third spring; 705. Fixing rod; 706. Limiting plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] This utility model provides a technical solution:

[0027] Please see Figures 1 to 3A hardness testing device for automotive fastener processing includes an operating table 1. A sliding frame 2 is slidably connected to the outer axial wall of the operating table 1. A detection head 3 is embedded inside the sliding frame 2. A turntable 4 is rotatably connected to the top axial axis of the operating table 1. A positioning mechanism 5 is provided above the turntable 4. The positioning mechanism 5 includes an electromagnet 501, which is embedded inside the turntable 4. A mounting groove 502 is provided on one side of the electromagnet 501 at the top of the turntable 4. A contact plate 503 is slidably connected inside the mounting groove 502. A through-hole block 504 is fixedly installed on the outer wall of 503. A limiting back plate 505 is fixedly installed at one end of the through-hole block 504 that passes through the turntable 4. A permanent magnet block 506 is fixedly installed on one side of the limiting back plate 505. A first spring 507 is fixedly installed on the other side of the limiting back plate 505. A connecting rod 508 passes through the outer wall of the turntable 4. An adjusting block 509 is fixedly installed at one end of the connecting rod 508. A ball bearing 510 is rotatably connected to the other end of the connecting rod 508. A pressing plate 511 is sleeved on the outside of the ball bearing 510.

[0028] By adopting the above technical solution, the turntable 4 is first equipped with four placement slots 502. During rotation, one placement slot 502 is positioned above the conveying equipment, allowing for placement, inspection, and unloading in sequence. Simultaneously, based on the dimensions of the fasteners processed in the same batch, the connecting rod 508 is adjusted via the adjusting block 509, and the pressing plate 511 slides within the placement slot 502 in conjunction with the ball bearing 510, thus limiting the fasteners to correspond with the inspection head 3. When the fastener is placed into the placement slot 502, the control electromagnet 501 at the device control end is activated, pushing the permanent magnet with the same magnetic pole. Block 506 allows the inserting block 504 to slide along the turntable 4, causing the contact plate 503 to contact the fastener and clamp the workpiece with the pressing plate 511. When inspecting the same type of fastener, it can be directly inserted for clamping and positioning, avoiding excessive operations that would lead to a large workload and affect inspection efficiency. When the inspected fastener is above the conveying equipment, the electromagnet 501 can be closed via the control terminal. Then, with the cooperation of the limiting back plate 505 and the first spring 507, the contact plate 503 is reset, and the fastener loses its clamping force and can fall to the conveying equipment for transport to the next process.

[0029] Specifically, such as Figure 1 , Figure 2 and Figure 4As shown, a connecting block 6 is fixedly installed at the front end of the contact plate 503. A limiting mechanism 7 is provided on one side of the connecting block 6. The limiting mechanism 7 includes a sliding plate 701, which is slidably connected to the outside of the connecting block 6. An insertion block 702 is fixedly installed on the outer wall of the sliding plate 701. A second spring 703 is fixedly installed at one end of the insertion block 702 that passes through the turntable 4. A third spring 704 is fixedly installed at the front end of the sliding plate 701. A fixing rod 705 passes through the inside of the third spring 704. A limiting plate 706 is fixedly installed at the front end of the fixing rod 705.

[0030] By adopting the above technical solution, when the contact plate 503 moves, it drives the connecting block 6 to move, so that the connecting block 6 is inserted between the sliding plate 701 and the turntable 4. The inclined structure of the connecting block 6 facilitates insertion and slowly slides against the sliding plate 701, and allows the insertion block 702 to stretch the second spring 703. The third spring 704 allows the limiting plate 706 to limit the fastener from both sides and keep it in a corrected state. The fixing rod 705 is fixed on the limiting plate 706 and passes through the sliding plate 701. It can prevent bending and twisting when the third spring 704 is compressed and contracted, which would cause the limiting plate 706 to shift. At the same time, when the contact plate 503 drives the connecting block 6 to reset, the second spring 703 can reset the sliding plate 701, avoiding pressure on the fastener, which would prevent it from falling off and being unloaded.

[0031] Working principle: The operating table 1 is equipped with a hydraulic cylinder to drive the sliding frame 2 so that the detection head 3 can be inserted into the mounting slot 502 of the turntable 4 to detect the internal fasteners. Simultaneously, the operating table 1 is equipped with a servo motor that drives the turntable 4 to rotate. Together with slip rings and other adapter components, it forms a rotating conductive device to energize the electromagnet 501. This is existing technology and will not be elaborated further. Based on the required uniform fastener size, the operator adjusts the connecting rod 508 via the adjusting block 509. The connecting rod 508 is threadedly connected to the turntable 4, and the pressing plate 511 is moved to the corresponding position under the rotational connection of the ball bearing 510. This allows the pressing plate 511 to reach the corresponding position when the electromagnet 501 pushes the permanent magnet block 506 with the same magnetic pole. The inserting block 504 then drives the contact plate 503 and the pressing plate 511 to clamp the fastener, aligning it with the detection head 3. This allows for direct insertion and clamping of the fastener, avoiding the need for excessive operator intervention. The limiting back plate 505... In conjunction with the first spring 507, the insertion block 504 is prevented from protruding excessively. After inspection, the fastener follows the turntable 4 out of the operating table 1 above the conveying equipment and is closed by the electromagnet 501, which causes the first spring 507 to elastically reset and the contact plate 503 to reset. The fastener loses its clamping force and falls above the conveying equipment to be conveyed to the next process. When the contact plate 503 is displaced, it drives the connecting block 6 to insert between the sliding plate 701 and the turntable 4, and allows the insertion block 702 to slide along the turntable 4 and stretch the second spring 703. The sliding plate 701 is elastically pushed by the third spring 704 to limit the fastener from the other two sides by the limiting plate 706. The fixing rod 705 fixedly installed on the limiting plate 706 passes through the sliding plate 701, which can keep the third spring 704 stable when it elastically contracts. When the connecting block 6 resets with the contact plate 503, the second spring 703 can elastically reset the sliding plate 701, avoiding clamping the fastener and facilitating unloading.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A hardness testing device for automotive fastener processing, comprising an operating table (1), characterized in that: The axial outer wall of the operating table (1) is slidably connected to a sliding frame (2), and a detection head (3) is embedded inside the sliding frame (2). The axial top end of the operating table (1) is rotatably connected to a turntable (4), and a positioning mechanism (5) is provided above the turntable (4). The positioning mechanism (5) includes an electromagnet (501), which is embedded in the turntable (4). A mounting groove (502) is provided on one side of the electromagnet (501) at the top of the turntable (4). A contact plate (503) is slidably connected inside the mounting groove (502). An insertion block (504) is fixedly installed on the outer wall of the contact plate (503). A limiting back plate (505) is fixedly installed at one end of the insertion block (504) that penetrates into the turntable (4). A permanent magnet block (506) is fixedly installed on one side of the limiting back plate (505). A first spring (507) is fixedly installed on the other side of the limiting back plate (505).

2. The hardness testing device for automotive fastener processing according to claim 1, characterized in that: A connecting rod (508) is inserted into the outer wall of the turntable (4), and an adjusting block (509) is fixedly installed at one end of the connecting rod (508).

3. The hardness testing device for automotive fastener processing according to claim 2, characterized in that: The other end of the connecting rod (508) is rotatably connected to a ball bearing (510), and a pressing plate (511) is sleeved on the outside of the ball bearing (510).

4. The hardness testing device for automotive fastener processing according to claim 1, characterized in that: The front end of the contact plate (503) is fixedly installed with a connecting block (6), and a limit mechanism (7) is provided on one side of the connecting block (6).

5. The hardness testing device for automotive fastener processing according to claim 4, characterized in that: The limiting mechanism (7) includes a sliding plate (701), which is slidably connected to the outside of the connecting block (6), and an insertion block (702) is fixedly installed on the outer wall of the sliding plate (701).

6. The hardness testing device for automotive fastener processing according to claim 5, characterized in that: The insertion block (702) is fixedly installed with a second spring (703) at one end of the turntable (4), and the sliding plate (701) is fixedly installed with a third spring (704) at the front end.

7. The hardness testing device for automotive fastener processing according to claim 6, characterized in that: A fixing rod (705) is inserted inside the third spring (704), and a limit plate (706) is fixedly installed at the front end of the fixing rod (705).

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