Closed type pull test equipment for blind rivet

Abstract

The utility model discloses a closed type core pull rivet tension test equipment, including base, base upper surface and support frame fixed connection, support frame upper surface fixed mounting has the lift motor, the output of lift motor is connected with the screw rod cooperation, the outside setting of screw rod elevating plate, elevating plate bottom surface fixed mounting has pressure sensor, pressure sensor lower extreme fixed mounting has the cylinder, the inside setting of cylinder turns to the board, the arc slot is set up on the board, the arc slot is set up the sliding block, sliding block bottom and clamping block fixed connection. The utility model discloses through the turning of the board drive sliding block makes clamping block will rivet body's pull rod clamping fixed, then through the upshift of elevating plate will pull rod stretch, utilize the tension sensor to detect the tension, can through the observation fixed part and rivet's connection intensity, utilize the movement of clamping block can be with different diameter and different specifications rivet body clamping fixed.

Description

Technical Field

[0001] This utility model relates to the field of blind rivet technology, specifically a closed-type blind rivet tensile testing device. Background Technology

[0002] A blind rivet is a type of rivet used for single-sided riveting. During riveting, the rivet core is pulled by a special rivet gun, causing the rivet body to expand and achieve the riveting effect. Closed-type blind rivets are suitable for riveting applications requiring high load capacity and a certain degree of sealing performance, and are therefore widely used in construction, automobiles, ships, aircraft, machinery, electrical appliances, furniture, and other products. To ensure that the pulling force is sufficient to allow the rivet body to expand fully and to achieve a locking effect that accommodates the thickness and strength of the sheet metal, the pulling force of the blind rivet needs to be monitored. This ensures that the rivet core fracture groove design and the rivet body itself meet the strength requirements for actual use.

[0003] Most existing blind rivets are tested for tensile strength using a tensile testing machine. However, the tensile testing machine requires operators to manually rotate the threaded rod to clamp and fix the rivet on both sides, which is inconvenient for operation. In addition, since there are many types of rivets, the clamps need to be changed according to the actual situation, which reduces the efficiency of tensile testing of blind rivets. Utility Model Content

[0004] The purpose of this invention is to provide a closed-type mandrel tensile testing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a closed-type pull-out rivet tensile testing device, comprising a base, the upper surface of which is fixedly connected to a support frame, a lifting motor fixedly mounted on the upper surface of the support frame, the output end of the lifting motor being connected to a lead screw, a lifting plate being provided on the outer side of the lead screw, a pressure sensor being fixedly mounted on the bottom surface of the lifting plate, a cylinder being fixedly mounted on the lower end of the pressure sensor, a rotating plate being provided inside the cylinder, an arc-shaped groove being formed on the rotating plate, a slider being provided in the arc-shaped groove, the bottom end of the slider being fixedly connected to a clamping block, the upper surface of the base being fixedly connected to a fixing frame, a threaded rod being fixedly mounted on the fixing frame, the bottom end of the threaded rod being connected to a pressure plate, and a rivet body being provided on the base.

[0006] Preferably, the support frame is an inverted U-shaped plate, and a rectangular groove is formed on the inner wall of the support frame, through which the support frame slides in cooperation with the outer side of the lifting plate.

[0007] Preferably, the lifting plate has a threaded hole, and the lifting plate is threadedly engaged with the pressure sensor through the threaded hole. The pressure sensor is located between the lifting plate and the cylinder.

[0008] Preferably, a clamping motor is fixedly installed inside the cylinder, the output end of the clamping motor is connected to the rotating shaft, and the outer side of the rotating shaft is fixedly connected to the rotating plate.

[0009] Preferably, the rotating plate has an arc-shaped groove on its surface, the arc-shaped groove being arc-shaped, and the bottom surface of the cylinder has a limiting groove, the limiting groove being a straight groove, and the slider simultaneously slides in cooperation with both the arc-shaped groove and the limiting groove.

[0010] Preferably, the fixing frame is threadedly engaged with the threaded rod through a threaded hole, the bottom end of the threaded rod is rotatably engaged with the pressure plate, and the bottom surface of the pressure plate is bonded and fixed to the anti-slip pad.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model uses a clamping motor to rotate the rotating shaft and the rotating plate, which in turn causes the slider to move in the arc groove, driving the clamping block to move until the clamping block clamps and fixes the pull rod of the rivet body. Then, the pull rod is stretched by the upward movement of the lifting plate. The tension is detected by the tension sensor. The connection strength between the part to be fixed and the rivet can be observed. The movement of the clamping block can clamp and fix rivet bodies of different diameters and specifications.

[0012] 2. This utility model also uses the rotation of the threaded rod to move the pressure plate downward and clamp and fix the parts to be connected, so as to avoid the parts to be connected from shifting during riveting. By moving the pressure plate, the plates to be fixed of different thicknesses can be matched with rivets of corresponding lengths for testing, and the riveting results can be visualized intuitively. The structure is simple and the operation is convenient. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the cylindrical structure of this utility model; Figure 3 This is a cross-sectional view of the internal structure of the cylinder of this utility model; Figure 4 This is a schematic diagram of the connection structure between the rivet and the fastener of this utility model; Figure 5 This is a schematic diagram of the fixing frame structure of this utility model.

[0014] In the diagram: 1. Base; 2. Support frame; 3. Lifting motor; 4. Lead screw; 5. Lifting plate; 6. Pressure sensor; 7. Cylinder; 8. Clamping motor; 9. Rotating shaft; 10. Rotating plate; 11. Arc groove; 12. Slider; 13. Clamping block; 14. Limiting groove; 15. Fixing frame; 16. Threaded rod; 17. Pressure plate; 18. Rivet body. Detailed Implementation

[0015] 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.

[0016] Please see Figure 1-5 This utility model provides a technical solution: a closed-type pull-out rivet tensile testing device, including a base 1, the bottom of the base 1 is fixedly connected to four support columns, the bottom of the support columns is fixedly connected to rubber pads, the upper surface of the base 1 is welded to a support frame 2, the support frame 2 is an inverted U-shaped plate, the inner wall of the support frame 2 has a rectangular groove, and the support frame 2 slides with the outer side of the lifting plate 5 through the rectangular groove. The upper surface of the support frame 2 is fixed to the lifting motor 3 by bolts. The output end of the lifting motor 3 is connected to the lead screw 4, and the other end of the lead screw 4 is rotatably connected to the base 1. A threaded hole is opened on the lifting plate 5, and the lifting plate 5 is threadedly connected to the pressure sensor 6 through the threaded hole. The lifting motor 3 causes the lead screw 4 to rotate, thereby driving the lifting plate 5 to move up and down on the inner wall of the support frame 2, which can stretch the pull rod of the rivet body 18 upward, realizing the tensile test of the rivet body 18. By moving the clamping block 13 driven by the lifting plate 5, tensile tests can be performed on rivet bodies 18 of different lengths, expanding the application range of the device. A pressure sensor 6 is fixedly installed on the bottom surface of the lifting plate 5. The pressure sensor 6 is electrically connected to the controller via a wire. A cylinder 7 is fixedly installed at the lower end of the pressure sensor 6. The pressure sensor 6 is located between the lifting plate 5 and the cylinder 7. A clamping motor 8 is fixedly installed inside the cylinder 7. The clamping motor 8 is a geared motor with a self-locking function to prevent the clamping block 13 from shifting due to the rotation of the rotating plate 10 during clamping. The output end of the clamping motor 8 is connected to the rotating shaft 9. The outer side of the rotating shaft 9 is welded and fixed to the rotating plate 10. One end of the rotating shaft 9 is rotatably engaged with the inner cavity of the cylinder 7 to ensure the smooth rotation of the rotating shaft 9 and the rotating plate 10. An arc-shaped groove 11 is formed on the rotating plate 10. The arc-shaped groove 11 is arc-shaped and slides with the slider 12 inside. A limiting groove 14 is formed on the bottom surface of the cylinder 7. The limiting groove 14 is a straight groove. The slider 12 is connected and fixed by a cylinder and a rectangular block. The slider 12 slides with the arc-shaped groove 11 through the cylinder and with the limiting groove 14 through the rectangular block. The cylinder allows the slider 12 to slide inside the arc-shaped groove 11, and the rectangular block ensures that the slider 12 will not deviate or rotate when moving horizontally, ensuring the stability of the clamping block 13. The bottom end of the slider 12 is welded and fixed to the clamping block 13. Anti-slip grooves are provided on the side of the clamping block 13. There are two or more clamping blocks 13. The upper surface of the base 1 is welded and fixed to the fixing frame 15. A threaded rod 16 is fixedly installed on the fixing frame 15. The bottom end of the threaded rod 16 is connected to the pressure plate 17. A rivet body 18 is provided on the base 1. The slider 12 slides within both the arc-shaped groove 11 and the limiting groove 14. The fixing bracket 15 is threadedly engaged with the threaded rod 16 through a threaded hole. The bottom end of the threaded rod 16 is rotatably engaged with the pressure plate 17. The bottom surface of the pressure plate 17 is bonded and fixed to the anti-slip pad. Working principle: In use, two parts to be fixed are placed together and their riveting holes are aligned. The threaded rod 16 is rotated to move the pressure plate 17 until the fixing bracket 15 clamps and fixes the parts to be fixed. Then, one end of the rivet body 18 is inserted into the riveting hole. The clamping motor 8 drives the rotating shaft 9 and the rotating plate 10 to rotate, so that the arc groove 11 pushes the slider 12 to move inside it, and the slider 12 slides in the limiting groove 14, thereby driving two or more clamping blocks 13 to move synchronously until the pull rod of the rivet body 18 is clamped and fixed. The lifting motor 3 causes the screw 4 to rotate, thereby driving the lifting plate 5 to move up and down on the inner wall of the support frame 2, which can pull the pull rod of the rivet body 18 upward. The tension can be detected by the pressure sensor 6. When the pull rod on the rivet body 18 breaks, the parts to be fixed can be removed by rotating the threaded rod 16 to inspect the riveting.

[0017] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A closed-type pull-out rivet tensile testing device, comprising a base (1), characterized in that: The upper surface of the base (1) is fixedly connected to the support frame (2). A lifting motor (3) is fixedly installed on the upper surface of the support frame (2). The output end of the lifting motor (3) is connected to the lead screw (4). A lifting plate (5) is provided on the outside of the lead screw (4). A pressure sensor (6) is fixedly installed on the bottom surface of the lifting plate (5). A cylinder (7) is fixedly installed at the lower end of the pressure sensor (6). A rotating plate (10) is provided inside the cylinder (7). An arc groove (11) is opened on the rotating plate (10). A slider (12) is provided in the arc groove (11). The bottom end of the slider (12) is fixedly connected to the clamping block (13). The upper surface of the base (1) is fixedly connected to the fixing frame (15). A threaded rod (16) is fixedly installed on the fixing frame (15). The bottom end of the threaded rod (16) is connected to the pressure plate (17). A rivet body (18) is provided on the base (1).

2. The enclosed type pull-rivet tensile testing device according to claim 1, characterized in that: The support frame (2) is an inverted U-shaped plate. A rectangular groove is opened on the inner wall of the support frame (2). The support frame (2) slides with the outer side of the lifting plate (5) through the rectangular groove.

3. The enclosed type pull-rivet tensile testing device according to claim 2, characterized in that: The lifting plate (5) has a threaded hole, and the lifting plate (5) is threadedly engaged with the pressure sensor (6) through the threaded hole. The pressure sensor (6) is located between the lifting plate (5) and the cylinder (7).

4. The enclosed type pull-rivet tensile testing device according to claim 3, characterized in that: A clamping motor (8) is fixedly installed inside the cylinder (7). The output end of the clamping motor (8) is connected to the rotating shaft (9). The outer side of the rotating shaft (9) is fixedly connected to the rotating plate (10).

5. The enclosed type pull-rivet tensile testing device according to claim 4, characterized in that: The rotating plate (10) has an arc-shaped groove (11) on its surface. The arc-shaped groove (11) is arc-shaped. The bottom surface of the cylinder (7) has a limiting groove (14) which is a straight groove. The slider (12) slides in cooperation with both the arc-shaped groove (11) and the limiting groove (14).

6. The enclosed type pull-rivet tensile testing device according to claim 1, characterized in that: The fixing frame (15) is threadedly engaged with the threaded rod (16) through a threaded hole. The bottom end of the threaded rod (16) is rotatably engaged with the pressure plate (17). The bottom surface of the pressure plate (17) is bonded and fixed to the anti-slip pad.

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