Burr prevention tool for pressing rivet process

Abstract

The utility model discloses an anti-burr tool for a pressure riveting process, which relates to the technical field of pressure riveting processes and comprises a female die and a male die, a recess is arranged at the upper end of the female die, a fastener is placed in the recess, an interface is arranged at the upper end of the fastener, a through hole is arranged in the interface, and a through hole is arranged in the through hole. A first mounting groove is formed in the upper end of the male die, an elastic part fixing screw is in threaded connection with the upper side of the interior of the first mounting groove, a second mounting groove is formed in the lower end of the male die, a positioning guide pin is arranged in the second mounting groove, and downward force is applied to the male die to drive the male die to move downwards. By applying pressure to the male die, more interfaces can be stacked towards the dovetail of the fastener, better connection performance can be achieved, the male die and the female die have large planes, the planeness of the interfaces is corrected after the male die and the female die press-rivet the fastener and the interfaces, and accordingly interface burrs are prevented from being generated and burrs are prevented from protruding on the interfaces to form gaps.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of pressure riveting process technology, specifically relates to a pressure riveting process anti burr tool. BACKGROUND

[0002] With the development of the automobile industry towards new energy and lightweight, the connection of dissimilar materials has become an important challenge in the manufacturing process, and pressure riveting fasteners have become the preferred method for connecting dissimilar materials due to their high efficiency, reliability and no loss characteristics.

[0003] During the pressure riveting process, burrs often occur around the connection point, and the presence of burrs can form small gaps between components, reducing the tightness and structural strength of the connecting parts, thereby affecting the overall performance and safety of the product. These burrs not only affect product quality, but also affect the appearance of the connection site. Based on this, the present scheme provides a pressure riveting process anti burr tool to solve the above problems. UTILITY MODEL CONTENT

[0004] To solve the above technical problems, a pressure riveting process anti burr tool is provided, which solves the problem of burrs occurring around the connection point during the pressure riveting process, which can form small gaps between components, reducing the tightness and structural strength of the connecting parts, thereby affecting the overall performance and safety of the product. These burrs not only affect product quality, but also affect the appearance of the connection site.

[0005] To achieve the above purpose, the utility model adopts the technical scheme that a pressure riveting process anti burr tool, including female die and male die, the upper end of the female die is provided with a concave hole, the inside of the concave hole is placed with a fastener, the upper end of the fastener is provided with an interface, the inside of the interface is provided with a through hole, the upper end of the male die is provided with a first installation slot, the inside of the first installation slot is screw connected with a fixed elastic piece screw on the upper side, the lower end of the male die is provided with a second installation slot, the inside of the second installation slot is provided with a positioning guide pin, the upper end of the positioning guide pin is fixedly connected with a connecting column, the lower end of the connecting column is abutted with the lower end of the first installation slot on the outside, the connecting column is provided with an elastic piece between the fixed elastic piece screw, the outer surface of the male die is provided with a threaded hole, and the inside of the threaded hole is screw connected with a fixed loosening screw.

[0006] Preferably, the upper surface of the fastener is provided with a plurality of convex structures, and the fastener is provided with a dovetail.

[0007] Preferably, the first installation slot and the second installation slot are in communication.

[0008] Preferably, the connecting column slides in the interior of the first installation slot, the positioning guide pin slides in the interior of the second installation slot, and the size of the second installation slot is smaller than that of the first installation slot.

[0009] Preferably, the thread opened on the upper side of the interior of the first installation slot is matched with the thread on the outer surface of the fixing elastic member screw.

[0010] Preferably, the diameter of the recess is matched with the outer surface contour of the fastener for fixing the central position of the fastener, and the depth of the recess is close to the height of the fastener.

[0011] Compared with the prior art, the utility model provides a kind of press-in process anti-burr tool, with the following beneficial effects:

[0012] The utility model discloses a convex die is moved down to the interface can be more to fastener dovetail accumulation by the pressure to convex die, with better connecting performance, and convex die and recess die have larger plane, after the press-in of convex die and recess die to fastener and interface, to correct the flatness of interface, to prevent the generation of interface burr and the gap formed by burr protruding in interface. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0014] Figure 2 It is the sectional view of the utility model;

[0015] Figure 3 It is the structure schematic diagram of positioning guide pin in the utility model;

[0016] Figure 4 It is the structure schematic diagram of fastener in the utility model;

[0017] Figure 5 It is the structure schematic diagram of convex die in the utility model.

[0018] Marked number in drawing is:

[0019] 1, recess die;2, recess;3, fastener;301, dovetail;302, convex spur structure;4, interface;401, through hole;5, convex die;6, first installation slot;7, fixing elastic member screw;8, elastic member;9, positioning guide pin;10, threaded hole;11, fixed loosening screw;12, connecting column;13, second installation slot. DETAILED DESCRIPTION

[0020] The following description is used to disclose the utility model so that those skilled in the art can realize the utility model. The preferred embodiments in the following description are only as examples, and other obvious variants can be thought by those skilled in the art.

[0021] Reference Figures 1-4 As shown, a riveting anti-burr tool includes a concave die 1 and a convex die 5. The upper end of the concave die 1 has a recess 2, and a fastener 3 is placed inside the recess 2. The upper end of the fastener 3 has an interface 4, and the interface 4 has a through hole 401 inside. The upper end of the convex die 5 has a first mounting groove 6, and a fixing elastic element screw 7 is threadedly connected to the upper side of the first mounting groove 6. The lower end of the convex die 5 has a second mounting groove 13, and a positioning guide pin 9 is provided inside the second mounting groove 13. A connecting post 12 is fixedly connected to the upper end of the positioning guide pin 9. The lower outer side of the connecting post 12 abuts against the lower end of the first mounting groove 6. An elastic element 8 is provided between the connecting post 12 and the fixing elastic element screw 7. The outer surface of the convex die 5 has a threaded hole 10, and a fixing loosening screw 11 is threadedly connected inside the threaded hole 10.

[0022] Reference Figures 2-5 As shown, the upper surface of the fastener 3 is provided with several protruding structures 302, and the fastener 3 is provided with a dovetail 301. The first mounting groove 6 is connected to the second mounting groove 13. The connecting post 12 slides inside the first mounting groove 6, and the positioning guide pin 9 slides inside the second mounting groove 13. The size of the second mounting groove 13 is smaller than the size of the first mounting groove 6. The thread opened on the upper side inside the first mounting groove 6 is adapted to the thread on the outer surface of the fixing elastic element screw 7. The diameter of the recess 2 matches the outer surface contour of the fastener 3 to fix the center position of the fastener 3. The depth of the recess 2 is close to the height of the fastener 3.

[0023] The working principle and usage process of this utility model are as follows: In use, the fastener 3 is placed in the recess 2 at the upper end of the die 1. Then, the interface 4 is placed above the fastener 3. A downward force is applied to the punch 5, causing it to move downwards. The punch 5 moves downwards and contacts the interface 4. Under the downward pressure of the punch 5, the interface 4 is deformed and bent, allowing more of the interface 4 to accumulate at the dovetail 301 on the fastener 3, thus completing the riveting under downward pressure. After riveting, an upward force is applied to the punch 5, causing it to move away from the fastener 3. Then, the riveted fastener 3 is removed from the recess 2. During the downward movement of the punch 5, the positioning guide pin 9 moves downwards. During this downward movement, the positioning guide pin 9 passes through the through hole 401 on the interface 4 and abuts against the upper middle part of the fastener 3. After abutting against the upper end of the fastener 3, under the action of the elastic element, the positioning guide pin 9 moves upwards, preventing damage to the fastener 3.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A tool for preventing burrs in a riveting process, characterized in that: The device includes a concave die (1) and a convex die (5). The upper end of the concave die (1) is provided with a recess (2). A fastener (3) is placed inside the recess (2). The upper end of the fastener (3) is provided with an interface (4). The interface (4) is provided with a through hole (401). The upper end of the convex die (5) is provided with a first mounting groove (6). The upper side of the first mounting groove (6) is threaded with a fixing elastic element screw (7). The lower end of the convex die (5) is provided with a second mounting groove (13). The second mounting groove (13) is provided with a positioning guide pin (9). The upper end of the positioning guide pin (9) is fixedly connected with a connecting post (12). The lower outer side of the connecting post (12) abuts against the lower end of the first mounting groove (6). An elastic element (8) is provided between the connecting post (12) and the fixing elastic element screw (7). The outer surface of the convex die (5) is provided with a threaded hole (10). The threaded hole (10) is threaded with a fixing loosening screw (11).

2. The anti-burr tool for riveting process according to claim 1, characterized in that: The fastener (3) has a plurality of protruding barbs (302) on its upper surface and a dovetail (301) on its upper surface.

3. The anti-burr tool for riveting process according to claim 1, characterized in that: The first mounting slot (6) is connected to the second mounting slot (13).

4. The anti-burr tool for riveting process according to claim 1, characterized in that: The connecting post (12) slides inside the first mounting groove (6), and the positioning guide pin (9) slides inside the second mounting groove (13). The size of the second mounting groove (13) is smaller than the size of the first mounting groove (6).

5. The anti-burr tool for riveting process according to claim 1, characterized in that: The thread on the upper side of the first mounting groove (6) is compatible with the thread on the outer surface of the fixing elastic element screw (7).

6. The anti-burr tool for riveting process according to claim 1, characterized in that: The diameter of the recess (2) matches the outer surface contour of the fastener (3) to fix the center position of the fastener (3), and the depth of the recess (2) is close to the height of the fastener (3).

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