Connecting piece and connecting structure for aluminum alloy plate and injection molding piece

Abstract

The utility model relates to a connecting piece and a connecting structure of an aluminum alloy plate and an injection molding part, the connecting piece is in a cap shape and is provided with a cap top area, a transition area and a cap brim area, the cap top area is a flat and straight surface, and the connecting piece is an aluminum alloy part. The hat-shaped aluminum alloy metal connecting piece is designed, the hat top area and the bottom face of the aluminum alloy plate are connected in a butt-welding mode, due to the fact that materials are the same, the connecting strength is high, the hat brim area and the injection molding piece are connected in a clamped mode, glue or hot melting is not needed, operation is easy, and connection is firm. The connecting piece is simple in structure, convenient to machine, low in requirement for the structure of the injection molding piece and the structure of the aluminum alloy plate and suitable for connection of various injection molding pieces and aluminum alloy plates.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds, and in particular relates to a connecting piece and a connecting structure of an aluminum alloy plate and an injection molded part. Background Art

[0002] At present, in order to meet some requirements on some injection molded parts, it is necessary to introduce aluminum alloy plates on the injection molded parts. The existing ways of bonding injection molded parts and aluminum alloy plates include embedded injection molding, hot melt bonding, glue bonding, etc. For example, patent application document CN115122645A discloses a new aluminum-plastic connection process. First, the aluminum alloy profile and the plastic part are assembled and combined to obtain a combination, and the combination is placed on a welding base; then the combination is clamped by a clamping tool, and then the combination is moved to a welding station by a shifting mechanism. A high-frequency welding machine uses a high-frequency coil to heat the aluminum alloy profile. When the temperature reaches the melting point of the plastic part, the plastic part melts and combines with the aluminum alloy profile to obtain a welded product, which is bonded to the aluminum alloy by melting the plastic part.

[0003] The existing methods have high requirements on mold design, are limited by the component structure, the process is relatively complicated, and the welding strength is not high. Utility Model Content

[0004] Based on this, the utility model proposes a structure for connecting an aluminum alloy plate and an injection molded part, using an aluminum alloy auxiliary material of the same material as a connecting piece, and connecting the injection molded part and the aluminum alloy plate by butt welding. The structure is simple in design and the welding is firm.

[0005] To achieve the above-mentioned purpose, the technical solution of the utility model is: a connecting piece of an aluminum alloy plate and an injection molded part, the connecting piece is in the shape of a hat, having a top area, a transition area and a brim area, the top area and the brim area are connected by the transition area, the top area is a flat surface, and the connecting piece is an aluminum alloy part.

[0006] When in use, the top area of ​​the connector and the transition area are passed through the bottom of the injection molded part, and the top area of ​​the connector contacts the bottom surface of the aluminum alloy plate, which can be butt-welded; and the brim area of ​​the connector is clamped on the bottom of the injection molded part and abuts against the bottom surface of the injection molded part, and is connected by mechanical cooperation, with a simple structure, ingenious design and high connection strength.

[0007] Preferably, the brim area has an upward flange. The mechanical connection strength between the connector and the injection molded part can be further improved by providing a groove matching the groove on the bottom surface of the injection molded part.

[0008] Preferably, the transition area is perpendicular to the flat surface where the top area is located, so as to facilitate processing.

[0009] Preferably, the periphery of the cap top area is provided with a chamfer to facilitate the butt welding operation.

[0010] On the other hand, the utility model also provides an aluminum alloy plate and injection molded part connection structure, including an aluminum alloy plate, a connecting piece and an injection molded part, the aluminum alloy plate body is an extended plane, the connecting piece is in the shape of a hat, having a top area, a transition area, and a brim area, the top area is a flat surface, the connecting piece is an aluminum alloy part, the injection molded part is in the shape of a plate as a whole, and a circular opening is provided in the center, the top area and the transition area of ​​the connecting piece pass through the opening from the bottom of the injection molded part, the top area of ​​the connecting piece contacts the bottom surface of the aluminum alloy plate, and is connected by butt welding; the brim area of ​​the connecting piece abuts the bottom surface of the injection molded part.

[0011] The solution is to design a cap-shaped aluminum alloy metal connector, connect the cap top area and the bottom surface of the aluminum alloy plate by butt welding, and snap-fit ​​the cap brim area and the injection molded part opening. It has a simple structure, ingenious design and high connection strength.

[0012] Preferably, the opening of the injection molded part extends toward the aluminum alloy plate to form a convex edge, and the height of the convex edge is equivalent to the height of the transition zone, thereby further improving the connection strength.

[0013] Further preferably, the flange has two levels, a first flange and a second flange, the first flange is a flange close to the injection molded part body, and the width of the first flange is greater than the width of the second flange. Since the injection molded part is a plastic part, the relative strength is relatively low. For thinner injection molded parts, the strength at the opening is even lower. In order to avoid deformation and loss of the opening due to force during assembly or use, the connection strength can be improved by setting the flange. Furthermore, the two-level flange is designed, and the width of the first flange is greater than the second flange, which can further enhance the connection strength at the injection molded part opening.

[0014] Preferably, the periphery of the cap top area is provided with a chamfer to facilitate the butt welding operation.

[0015] Preferably, the transition area is perpendicular to the flat surface where the top area is located, so as to facilitate processing.

[0016] Further preferably, the brim area of ​​the connector has an upward flange, and the bottom surface of the injection molded part is provided with a groove matching the flange, which can further improve the connection strength between the connector and the injection molded part.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model designs a cap-shaped aluminum alloy metal connector, and the cap top area and the bottom surface of the aluminum alloy plate are connected by butt welding. Since the materials are the same, the connection strength is high, and the cap brim area and the injection molded part are clamped, no glue or hot melt is required, the operation is simple, and the connection is firm. The connector has a simple structure and is easy to process, and the requirements for the structure of the injection molded part and the aluminum alloy plate itself are not high. It can be applied to the connection of various injection molded parts and aluminum alloy plates. As long as the aluminum alloy plate has a bottom surface that is approximately flat, it can be firmly connected with the plane of the cap top area of ​​the connector. Combined with the mechanical clamping of the cap brim area, the aluminum alloy plate and the injection molded part can be firmly connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the aluminum alloy plate and the injection molded part connector according to an embodiment of the utility model;

[0020] Figure 2 This is one of the schematic diagrams of the bonding structure of the aluminum alloy plate and the injection molded part according to the embodiment of the utility model;

[0021] Figure 3 This is the second schematic diagram of the bonding structure of the aluminum alloy plate and the injection molded part according to the embodiment of the utility model;

[0022] Figure 4 This is one of the schematic diagrams of the injection molded part structure of the aluminum alloy plate and the injection molded part of the embodiment of the utility model;

[0023] Figure 5 This is the second schematic diagram of the injection molded part structure of the aluminum alloy plate and the injection molded part bonding structure of the embodiment of the utility model. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the invention clearer, the utility model is described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Example 1

[0026] like Figure 1-2 As shown, a connector between an aluminum alloy plate and an injection molded part is in the shape of a hat, having a hat top area 21, a transition area 22 and a hat brim area 23. The hat top area 21 and the hat brim area 23 are connected by the transition area 22. The hat top area 21 is a flat surface, and the connector 2 is an aluminum alloy part.

[0027] When in use, the top area 21 and the transition area 22 of the two connecting parts are passed through the bottom opening of the injection molded part 3, so that the top area 21 of the connecting part 2 contacts the bottom surface of the aluminum alloy plate 1. Since the materials are the same, they can be butt-welded and connected with high connection strength; and the brim area 23 of the connecting part 2 is clamped on the bottom of the injection molded part and abuts against the bottom surface of the injection molded part 3, and is connected by mechanical cooperation. It has a simple structure, ingenious design and high connection strength.

[0028] In some preferred embodiments, the brim area 23 has an upward flange 231. The mechanical connection strength between the connector and the injection molded part can be further improved by providing a matching groove on the bottom surface of the injection molded part.

[0029] In some preferred embodiments, the transition area 22 is perpendicular to the flat surface where the top area 21 is located, so as to facilitate processing.

[0030] In some preferred embodiments, chamfers are provided around the top area 21 to facilitate butt welding operations.

[0031] Example 2

[0032] like Figure 1-5 As shown, an aluminum alloy plate and injection molded part connection structure includes an aluminum alloy plate 1, a connecting part 2 and an injection molded part 3.

[0033] The main body of the aluminum alloy plate 1 is an extended plane.

[0034] The connector 2 is in the shape of a hat, and has a hat top area 21, a transition area 22, and a hat brim area 23. The hat top area 21 and the hat brim area 23 are connected by the transition area 22. The hat top area 21 is a flat surface, and the connector 2 is an aluminum alloy part. The periphery of the hat top area 21 is provided with a chamfer to facilitate the butt welding operation. The transition area 22 is perpendicular to the flat surface where the hat top area is located, which is convenient for processing. The hat brim area 23 has an upward flange 231.

[0035] The injection molded part 3 is in the shape of a plate as a whole, with a circular opening 31 in the center. The opening 31 extends toward the aluminum alloy plate to form a convex edge 32. The overall height of the convex edge 32 is equivalent to the height of the transition zone 22. The convex edge 32 has two levels, namely a first convex edge 321 and a second convex edge 322. The first convex edge 321 is a convex edge close to the body of the injection molded part 3, and the width of the first convex edge 321 is greater than the width of the second convex edge 322.

[0036] Since the injection molded parts are plastic parts, their relative strength is relatively low. For thinner injection molded parts, the strength of the opening 31 is even lower. In order to avoid deformation and loss of the opening due to force during assembly or use, the connection strength can be improved by providing a flange 32. Furthermore, a two-stage flange is designed, with the first flange 321 being wider than the second flange 322, which can further enhance the connection strength of the injection molded part opening and further improve the connection strength.

[0037] When the connection is made, the cap top area 21 and the transition area 22 of the connector 2 pass through the opening 31 from the bottom of the injection molded part 2, and the cap top area 21 of the connector 2 contacts the bottom surface of the aluminum alloy plate 1, and is butt-welded; the cap brim area 23 of the connector 2 abuts against the bottom surface of the injection molded part 3. Furthermore, the bottom surface of the injection molded part 3 is provided with a groove 33 matching the flange 231, which can further improve the connection strength between the connector and the injection molded part.

[0038] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A connector for an aluminum alloy plate and an injection molded part, characterized in that: The connecting piece is in a hat shape, and has a hat top area, a transition area and a hat brim area. The hat top area and the hat brim area are connected through the transition area. The hat top area is a flat surface, and the connecting piece is an aluminum alloy piece.

2. The alloy plate and injection molded part connector according to claim 1, characterized in that: The brim area has an upward turning edge.

3. The aluminum alloy plate and injection molded part connector according to claim 1, characterized in that: The transition area is perpendicular to the flat surface where the top area is located.

4. The aluminum alloy plate and injection molded part connector according to claim 1, characterized in that: The periphery of the cap top area is provided with chamfers.

5. A structure of an aluminum alloy plate and an injection molded part, characterized in that: Including aluminum alloy plates, connectors and injection molded parts, The aluminum alloy plate body is an extended plane. The connecting piece is in the shape of a hat, and has a hat top area, a transition area and a hat brim area. The hat top area and the hat brim area are connected through the transition area. The hat top area is a flat surface. The connecting piece is an aluminum alloy piece. The injection molded part is in the shape of a plate as a whole, with a circular opening in the center. The cap top area and transition area of ​​the connector pass through the opening from the bottom of the injection molded part, the cap top area of ​​the connector contacts the bottom surface of the aluminum alloy plate and is butt-welded; the cap brim area of ​​the connector abuts the bottom surface of the injection molded part.

6. The aluminum alloy plate and injection molded part bonding structure according to claim 5, characterized in that: The opening of the injection molded part extends toward the aluminum alloy plate to form a convex edge, and the height of the convex edge is equivalent to the height of the transition zone.

7. The aluminum alloy plate and injection molded part bonding structure according to claim 6, characterized in that: The flange has two levels, a first flange and a second flange. The first flange is a flange close to the injection molded part body, and the width of the first flange is greater than the width of the second flange.

8. The aluminum alloy plate and injection molded part bonding structure according to claim 5, characterized in that: The brim area of ​​the connector has an upward flange, and the bottom surface of the injection molded part is provided with a groove matched with the flange.

9. The aluminum alloy plate and injection molded part bonding structure according to claim 5, characterized in that: The transition area is perpendicular to the flat surface where the top area is located.

10. The aluminum alloy plate and injection molded part bonding structure according to claim 5, characterized in that: The periphery of the cap top area is provided with chamfers.

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