A one-time forming die structure for a special-shaped riveting edge

Abstract

The utility model discloses a kind of special-shaped riveting edge one-time forming die structure, comprising: product fixed plate, for placing and positioning to be riveted product;Ejector rod, by press drive;Locking module, with ejector rod linkage and have inclined wedge face;Multiple groups of sliding blocks, circumferentially arranged and can be radially slipped along sliding block guide plate, its inner side is equipped with with the corresponding forming surface of product riveting edge shape;Sliding block guide plate, fixed on fixed plate, for guiding sliding block module.The utility model passes through multiple sliding blocks synchronous encircles riveting edge, solve the problem of low efficiency, have mark, not sealed in prior art.

Description

I. Technical Field

[0002] This utility model relates to the field of stamping die technology, and in particular to a one-time forming die structure for riveting irregular workpieces. II. Background Technology

[0004] Existing methods for creating irregular riveting edges typically employ a multi-stage riveting process, which has the following drawbacks: 1. Numerous steps and low efficiency; 2. Repositioning is required between each riveting step, leading to significant cumulative errors; 3. Indentations and micro-cracks are prone to form at the riveting seams, affecting appearance and sealing; 4. Repeated clamping can easily cause product deformation, resulting in a low yield rate. Therefore, there is an urgent need for a mold structure that can complete irregular riveting edges in one step, leaving no seam marks and ensuring reliable sealing. III. Utility Model Content

[0006] The purpose of this utility model is to provide a one-time forming mold structure for irregular riveting edges, which solves the problems of low efficiency, imprints, and lack of sealing in the prior art by using multiple sliders to synchronously encircle the riveting edge.

[0007] IV. Technical Solution

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A one-time forming mold structure for irregular riveting edge includes: 1. a product fixing plate (6) for placing and positioning the product (1) to be riveted; 2. a push rod (2) set at the output end of the press; 3. a locking module (4) linked with the push rod (2); 4. multiple sliding modules (3) arranged circumferentially on the outside of the product (1), and the inner side of each sliding module (3) is provided with a forming surface matching the riveting edge shape of the product; 5. a slider guide plate (5) fixed on the fixing plate (6) for guiding the sliding modules (3) to slide synchronously in the radial direction; 6. a limiting screw (7) for limiting the maximum stroke of the sliding module; 7. a positioning pin (8) for precise positioning of the product (1) on the fixing plate (6).

[0010] Working principle: When the press moves downward, the push rod (2) pushes the locking module (4) downward; the wedge surface of the locking module (4) simultaneously squeezes all the sliding modules (3), causing the sliding modules (3) to slide synchronously towards the center along the slider guide plate (5), and its forming surface wraps around and rivets the edge of the product in one go, completing the irregular riveting. During the return stroke, the locking module (4) moves upward, and the sliding modules (3) retract under the reverse action of the return spring or the wedge, and the finished product is taken out.

[0011] V. Beneficial Effects

[0012] 1. One-time molding: Multi-slider synchronous action enables the entire irregular riveting process to be completed in one go, increasing efficiency by 3-5 times; 2. Seamlessness: The molding force is evenly distributed, resulting in smooth riveting without indentations; 3. Reliable sealing: One-time circumferential riveting ensures no segmented seams, significantly improving airtightness and liquid tightness; 4. Precise positioning: The positioning pin and the fixed plate work together to ensure that the product is coaxial with the molding surface, achieving a yield rate of ≥99%; 5. High versatility: Different irregular contours can be adapted by replacing the sliding module and locking module, resulting in low mold modification costs. VI. Description of the attached drawings

[0014] Figure 1 This is a schematic diagram of the structure of this utility model (closed state).

[0015] Figure 2 This is a three-dimensional schematic diagram of the structure of this utility model. VII. Detailed Implementation Methods

[0017] Example 1: As Figure 1 As shown, the product to be riveted (1) is placed in the center of the fixed plate (6) by the positioning pin (8); the press is started, and the push rod (2) pushes the locking module (4) downward. The 45° inclined wedge surface of the locking module (4) forces the six sets of sliding modules (3) to move synchronously 3mm towards the center along the slider guide plate (5). Its inner arc forming surface flips and rivets the edge of the product in one go; the limit screw (7) ensures that the maximum stroke of the sliding module is 3.2mm to prevent overpressure; after forming, the press returns, and the sliding module (3) is reset by the built-in spring, and the finished product is taken out. After testing, there are no indentations on the riveted edge, and the sealing performance reaches IP67. Example 2:

[0018] When riveting rectangular irregular products, only the forming surfaces of the sliding module (3) and the locking module (4) need to be replaced with straight lines and chamfered structures that match the rectangular outline, while the rest of the structure remains unchanged, so that the rectangular riveting can be formed in one step, with a switching time of ≤10 minutes.

Claims

1. A one-time forming mold structure for irregular riveting edges, characterized in that, include: Product plate (6) is used to place and position the product to be riveted (1); top rod (2) is driven by the press; locking module (4) is linked with the top rod (2) and has a wedge surface; multiple sliding modules (3) are arranged circumferentially and can slide radially along the slider guide plate (5), and their inner side is provided with a forming surface corresponding to the riveting edge shape of the product; slider guide plate (5) is fixed on the plate (6) and is used to guide the sliding modules (3).

2. The mold structure according to claim 1, characterized in that: The wedge angle of the lock module (4) is 30°-60°.

3. The mold structure according to claim 1, characterized in that: The number of sliding modules (3) is 3-8 groups, and they are evenly distributed circumferentially.

4. The mold structure according to claim 1, characterized in that: The sliding module (3) is equipped with a reset spring or a wedge reverse reset mechanism.

5. The mold structure according to any one of claims 1-4, characterized in that: The molding surfaces of the sliding module (3) and the locking module (4) are detachable and replaceable to adapt to different irregular contours.

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