Insert injection molding tail door

Abstract

The utility model relates to an automobile tail door, in particular to an insert injection molding tail door which comprises an inner plate assembly and an outer plate assembly which are bonded through an adhesive layer. The inner plate assembly comprises an inner plate piece, a hinge reinforcing plate and a ball head reinforcing plate; the outer plate assembly comprises an outer plate piece and a D column reinforcing plate. At the position close to the hinge mounting hole, the inner plate, the hinge reinforcing plate and the D column reinforcing plate are connected in a fastened mode through a connecting fastener; and the inner plate piece, the ball head reinforcing plate and the D column reinforcing plate are connected in a fastening manner at the position close to the ball head mounting hole through a connecting fastener. Compared with the prior art, the problems that in the prior art, warping and stress lines appear on the edge of an insert metal plate of an inner plate, the size deviation of an insert area is large and the like are solved, reliable arrangement of the D column reinforcing plate in the insert injection molding tail door is achieved, warping and stress lines appear on the edge of an inner plate piece / inner plate assembly, and the service life of the inner plate piece / inner plate assembly is prolonged. And dimensional deviation is reduced, so that the production cycle and cost are reduced, and the product percent of pass is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of automobile tailgates, specifically to a kind of insert injection tailgate. BACKGROUND

[0002] With the development of automobile industry, the proportion of plastic tailgate in automobile is increasing. At present, most of the insert injection plastic tailgates on the market generally have a D-pillar reinforcement plate, which is formed by insert injection molding process in the mold on the inner panel.

[0003] However, due to the large size of the D-pillar reinforcement plate (length exceeding 500mm), the thermal expansion coefficients of the metal part and the plastic part are different, which can cause the inner panel to warp and the stress lines to appear on the edge of the insert when the inner panel cools down, especially for long size sheet metal inserts. At the same time, due to the insert injection molding process itself, when the long size D-pillar reinforcement plate is insert injection molded, the D-pillar reinforcement plate insert will deform due to the impact of the material flow, which can eventually cause large size deviation of the inner panel. This can further cause long engineering rectification period, high cost, low product qualification rate and other problems.

[0004] To solve this problem, a new type of insert injection tailgate is needed to overcome the appearance problems of the inner panel, such as warping and stress lines on the edge of the insert sheet metal, and large size deviation of the insert area. SUMMARY

[0005] The purpose of the utility model is to solve at least one of the above problems by providing an insert injection tailgate to solve the appearance problems of the inner panel, such as warping and stress lines on the edge of the insert sheet metal, and large size deviation of the insert area. The present scheme realizes the reliable setting of the D-pillar reinforcement plate in the insert injection tailgate, avoids the warping and stress lines of the inner panel part / inner panel assembly at the edge, and reduces the size deviation, thereby reducing the production period and cost, and improving the product qualification rate.

[0006] The purpose of the utility model is achieved by the following technical solutions:

[0007] The utility model discloses a first aspect of a kind of insert injection tailgate, including inner panel assembly and outer panel assembly, the inner panel assembly is adhered with outer panel assembly by adhesive layer;

[0008] The inner panel assembly includes inner panel part, hinge reinforcement plate and ball head reinforcement plate;The inner panel part is respectively provided with hinge mounting hole and ball head mounting hole, for assembling hinge and ball head;The hinge reinforcement plate is embeddedly arranged on the surface of the inner panel part, the hinge reinforcement plate covers the hinge mounting hole, and the hinge reinforcement plate is provided with a hole at the hinge mounting hole;The ball head reinforcement plate is embeddedly arranged on the surface of the inner panel part, the ball head reinforcement plate covers the ball head mounting hole, and the ball head reinforcement plate is provided with a hole at the ball head mounting hole;

[0009] The outer plate assembly comprises an outer plate and a D-column reinforcing plate; the D-column reinforcing plate is embedded on the surface of the outer plate, the D-column reinforcing plate covers the hinge mounting hole and the ball head mounting hole, and the D-column reinforcing plate is provided with holes at the hinge mounting hole and the ball head mounting hole;

[0010] The inner plate, the hinge reinforcing plate and the D-column reinforcing plate are fastened and connected by the connecting fasteners near the hinge mounting hole; the inner plate, the ball head reinforcing plate and the D-column reinforcing plate are fastened and connected by the connecting fasteners near the ball head mounting hole.

[0011] Preferably, the hinge reinforcing plate is provided with a pair of plates, which are symmetrically arranged on the top of the inner plate; the ball head reinforcing plate is provided with a pair of plates, which are symmetrically arranged on the two sides of the inner plate.

[0012] Preferably, the outer plate comprises an upper outer plate and a lower outer plate;

[0013] The D-column reinforcing plate is embedded on the surface of the upper outer plate;

[0014] The upper outer plate is bonded to the inner plate assembly through a first adhesive layer;

[0015] The upper outer plate is bonded to the lower outer plate through a second adhesive layer;

[0016] The lower outer plate is bonded to the inner plate assembly through a third adhesive layer.

[0017] Preferably, the D-column reinforcing plate is provided with a pair of plates, which are symmetrically arranged on the top of the outer plate.

[0018] Preferably, the D-column reinforcing plate can be provided in an L-shaped structure along the corner of the top of the outer plate, or can be provided in other suitable shapes according to the structure and modeling requirements.

[0019] Preferably, the connecting fastener is a rivet or a bolt.

[0020] Preferably, the connecting fastener is a waterproof rivet.

[0021] Preferably, near the ball head mounting hole, the inner plate is further provided with an inner plate reinforcing rib, and the outer plate is further provided with an outer plate reinforcing rib.

[0022] Preferably, near the ball head mounting hole, the cavity formed between the inner plate and the outer plate is in a U-shaped or L-shaped cross section.

[0023] Preferably, near the hinge mounting hole, the adhesive layer forms a continuous glue path around the hinge mounting hole; near the ball head mounting hole, the adhesive layer forms a continuous glue path around the ball head mounting hole.

[0024] The utility model discloses a second aspect discloses a kind of processing methods of insert injection molding tailgate as any described above, comprising the following steps:

[0025] S1: inner plate, hinge reinforcing plate and ball head reinforcing plate are formed into inner plate assembly by insert injection molding process, and outer plate and D column reinforcing plate are formed into outer plate assembly by insert injection molding process;

[0026] S2: inner plate assembly is placed in first membrane, and outer plate assembly is placed in second membrane, respectively glue is applied on inner plate assembly and outer plate assembly, then the adhesion between inner plate assembly and outer plate assembly is realized by the pressing of first membrane and second membrane, and insert injection molding tailgate is formed;

[0027] S3: connection fastener is provided on insert injection molding tailgate and assembled hinge and ball head.

[0028] Compared with prior art, the utility model has the following beneficial effects:

[0029] By embedding D column reinforcing plate on outer plate assembly, avoid its appearance problem to inner plate assembly, such as: edge appears warping, stress line;Since the position of D column reinforcing plate is blocked by inner plate assembly, the appearance and size requirement of outer plate assembly is lower, the manufacturing process window is increased, the product qualification rate is improved, and the overall cost of tailgate is reduced.

[0030] By forming continuous glue path around the opening or using connection fastener with sealing performance, the sealing performance of the mounting point area corresponding to the opening can be ensured. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is the structure explosion schematic view of inner plate assembly, adhesive layer and outer plate assembly under the first visual angle;

[0032] Figure 2 It is the structure explosion schematic view of inner plate assembly, adhesive layer and outer plate assembly under the second visual angle;

[0033] Figure 3 It is the structure explosion schematic view of inner plate assembly;

[0034] Figure 4 It is the structure explosion schematic view of upper outer plate;

[0035] Figure 5 It is the structure schematic view of insert injection molding tailgate;

[0036] Figure 6 It is Figure 5 The structure schematic view of A-A section in middle;

[0037] Figure 7 It isFigure 5 Structure diagram of B-B section;

[0038] Figure 8 For Figure 5 Structure diagram of C-C section;

[0039] Figure 9 For Figure 5 Structure diagram of D-D section;

[0040] In the figure: 1 - inner plate assembly; 2 - outer plate; 201 - outer plate stiffener; 3 - lower outer plate; 4 - adhesive layer; 41 - first adhesive layer; 42 - second adhesive layer; 43 - third adhesive layer; 5 - inner plate; 501 - inner plate stiffener; 6 - hinge stiffener; 7 - ball head stiffener; 8 - upper outer plate; 9 - D column stiffener; 10 - connecting fastener. DETAILED DESCRIPTION

[0041] The utility model will be explained in detail below in combination with the drawings and specific embodiments.

[0042] Embodiment

[0043] A insert injection tail door, as Figures 1-9 shown, comprising an inner plate assembly 1 and an outer plate assembly, the inner plate assembly 1 and the outer plate assembly are bonded by adhesive layer 4;

[0044] The inner plate assembly 1 includes inner plate 5, hinge stiffener 6 and ball head stiffener 7; The inner plate 5 is respectively provided with hinge mounting hole and ball head mounting hole for assembling hinge and ball head; The hinge stiffener 6 is embedded on the surface of inner plate 5, and the hinge stiffener 6 covers the hinge mounting hole and is provided with a hole at the hinge mounting hole; The ball head stiffener 7 is embedded on the surface of inner plate 5, and the ball head stiffener 7 covers the ball head mounting hole and is provided with a hole at the ball head mounting hole;

[0045] The outer plate assembly includes outer plate 2 and D column stiffener 9; The D column stiffener 9 is embedded on the surface of outer plate 2, and the D column stiffener 9 covers the hinge mounting hole and the ball head mounting hole and is provided with a hole at the hinge mounting hole and the ball head mounting hole;

[0046] The inner plate 5, the hinge stiffener 6 and the D column stiffener 9 are fastened and connected by connecting fastener 10 near the hinge mounting hole; The inner plate 5, the ball head stiffener 7 and the D column stiffener 9 are fastened and connected by connecting fastener 10 near the ball head mounting hole.

[0047] More specifically, in the embodiment:

[0048] As Figures 1-7As shown, the insert injection-molded tailgate is formed by bonding the inner panel assembly 1 and the outer panel assembly together with an adhesive layer 4.

[0049] Inner panel assembly 1, such as Figure 2 As shown, the assembly comprises three parts: an inner plate 5, a hinge reinforcement plate 6, and a ball joint reinforcement plate 7. The inner plate 5 has symmetrical hinge mounting holes on both sides of its top for mounting hinges. Simultaneously, the inner plate 5 also has symmetrical ball joint mounting holes on both sides of its middle section for mounting ball joints. A pair of hinge reinforcement plates 6 are provided, corresponding to the positions of the hinge mounting holes and covering the surface of the inner plate 5. The hinge reinforcement plates 6 also have corresponding openings for the hinge mounting holes. A pair of ball joint reinforcement plates 7 are also provided, corresponding to the positions of the ball joint mounting holes and covering the surface of the inner plate 5. The ball joint reinforcement plates 7 also have corresponding openings for the ball joint mounting holes.

[0050] Outer panel assembly, such as Figure 3 As shown, the structure is composed of two parts: an outer panel 2 and a D-pillar reinforcing plate 9. The outer panel 2 can be an integral or separate structure depending on the design requirements; in this embodiment, a separate structure is used, specifically comprising an upper outer panel 8 and a lower outer panel 3. A pair of L-shaped D-pillar reinforcing plates 9 are provided, each positioned along the top corner of the upper outer panel 8. The D-pillar reinforcing plates 9 cover the hinge mounting holes and ball joint mounting holes, and corresponding openings are provided on them. In other embodiments, the D-pillar reinforcing plates 9 can be selected in other suitable shapes according to structural and aesthetic requirements.

[0051] like Figures 4-7 As shown, the D-pillar reinforcing plate 9 extends beyond the outer plate 2 at the hinge mounting hole and ball joint mounting hole, respectively fitting snugly against the hinge reinforcing plate 6 and the ball joint reinforcing plate 7. Thus, near the hinge mounting hole: the inner plate 5, hinge reinforcing plate 6, and D-pillar reinforcing plate 9 are stacked and fastened together by connecting fasteners 10, thereby improving and ensuring the structural strength and rigidity of the mounting position; near the ball joint mounting hole: the inner plate 5, ball joint reinforcing plate 7, and D-pillar reinforcing plate 9 are stacked and fastened together by connecting fasteners 10, thereby improving and ensuring the structural strength and rigidity of the mounting position. The connecting fasteners 10 can be rivets or bolts, etc.; in this embodiment, rivets are used as an example. Furthermore, fasteners with self-sealing properties, such as waterproof rivets, can be used to ensure the sealing performance of the mounting position.

[0052] Depending on the application site, the adhesive layer 4 can be divided into a first adhesive layer 41, a second adhesive layer 42, and a third adhesive layer 43, such as... Figure 1As shown, the upper outer panel 8 is bonded to the inner panel assembly 1 via a first adhesive layer 41, the upper outer panel 8 is bonded to the lower outer panel 3 via a second adhesive layer 42, and the lower outer panel 3 is bonded to the inner panel assembly 1 via a third adhesive layer 43. Furthermore, the adhesive layer 4 located near the hinge mounting holes and ball joint mounting holes can be coated as needed to form a continuous closed adhesive path, such as... Figures 4-7 As shown, this is to ensure the sealing performance of the installation location.

[0053] like Figure 7 As shown, near the ball head mounting hole: a cavity is formed between the inner panel 5 and the outer panel 2, which serves as the main load-bearing structure for the inner panel assembly 1. The cross-section of the cavity can be U-shaped or L-shaped. In this embodiment, a U-shaped structure is used as an example. In addition, according to the performance requirements of the tailgate, an inner panel reinforcing rib 501 (located on the side facing the outer panel 2) can be provided on the inner panel 5, and an outer panel reinforcing rib 201 (located on the side away from the inner panel 5) can be provided on the outer panel 2.

[0054] In this solution, since the position of the D-pillar reinforcement plate 9 can be completely covered by the inner panel assembly 1, there are no strict requirements for its appearance and size. This is conducive to improving the overall appearance and size controllability of the tailgate, increasing the manufacturing process window, improving the product qualification rate, and reducing the overall cost of the tailgate.

[0055] The specific processing and assembly process of this injection-molded tailgate is as follows:

[0056] First, the inner panel 5, hinge reinforcement plate 6, and ball head reinforcement plate 7 are formed into the inner panel assembly 1 by insert injection molding in the mold; at the same time, the upper outer panel 8 and D-pillar reinforcement plate 9 are formed into part of the outer panel assembly by insert injection molding in the mold.

[0057] Then, the inner panel assembly 1 is placed in the first mold and fixed. Part of the outer panel assembly and the lower outer panel 3 are placed in the second mold and fixed according to the structural shape of the outer panel assembly. Glue is applied to the target bonding positions of the inner panel assembly 1 and the outer panel assembly to form an adhesive layer 4. The bonding and fixing between the outer panel assembly and the inner panel assembly 1 is achieved by pressing the first mold and the second mold.

[0058] Finally, the glued insert injection-molded tailgate is placed on the fixed platform, and the connecting fasteners 10 and the hinges and ball joints are respectively installed at the reserved hinge mounting holes and ball joint mounting holes to complete the assembly of the tailgate assembly.

[0059] The above description of the embodiments is to facilitate the ordinary skilled in the art to understand and use the utility model. The person skilled in the art can obviously easily make various modifications to these embodiments, and the general principles described herein are applied to other embodiments without the need for creative labor. Therefore, the utility model is not limited to the above embodiments, and the improvements and modifications made by the person skilled in the art according to the disclosure of the utility model without departing from the scope of the utility model should be within the protection scope of the utility model.

Claims

1. An insert-molded tailgate, characterized in that, It includes an inner panel assembly (1) and an outer panel assembly, wherein the inner panel assembly (1) and the outer panel assembly are bonded together by an adhesive layer (4); The inner plate assembly (1) includes an inner plate (5), a hinge reinforcement plate (6), and a ball head reinforcement plate (7); the inner plate (5) is provided with hinge mounting holes and ball head mounting holes for assembling hinges and ball heads; the hinge reinforcement plate (6) is fitted onto the surface of the inner plate (5), the hinge reinforcement plate (6) covers the hinge mounting holes and has holes at the hinge mounting holes; the ball head reinforcement plate (7) is fitted onto the surface of the inner plate (5), the ball head reinforcement plate (7) covers the ball head mounting holes and has holes at the ball head mounting holes; The outer panel assembly includes an outer panel (2) and a D-pillar reinforcing plate (9); the D-pillar reinforcing plate (9) is fitted onto the surface of the outer panel (2), the D-pillar reinforcing plate (9) covers the hinge mounting hole and the ball joint mounting hole, and the D-pillar reinforcing plate (9) has openings at the hinge mounting hole and the ball joint mounting hole; Near the hinge mounting hole, the inner plate (5), hinge reinforcement plate (6) and D-pillar reinforcement plate (9) are fastened together by fasteners (10); near the ball head mounting hole, the inner plate (5), ball head reinforcement plate (7) and D-pillar reinforcement plate (9) are fastened together by fasteners (10).

2. The insert injection-molded tailgate according to claim 1, characterized in that, The hinge reinforcement plates (6) are provided in pairs and are symmetrically arranged on the top of the inner plate (5); the ball head reinforcement plates (7) are provided in pairs and are symmetrically arranged on both sides of the inner plate (5).

3. The insert injection-molded tailgate according to claim 1, characterized in that, The outer panel includes an upper outer panel (8) and a lower outer panel (3); The D-column reinforcing plate (9) is fitted onto the surface of the upper outer plate (8); The outer upper panel (8) is bonded to the inner panel assembly (1) through a first adhesive layer (41); The upper outer panel (8) is bonded to the lower outer panel (3) through a second adhesive layer (42); The lower outer panel (3) is bonded to the inner panel assembly (1) through a third adhesive layer (43).

4. The insert injection-molded tailgate according to claim 1, characterized in that, The D-column reinforcing plate (9) is provided in pairs, which are symmetrically arranged on the top of the outer plate (2).

5. An insert injection-molded tailgate according to claim 1 or 4, characterized in that, The D-column reinforcing plate (9) is set along the corner of the top of the outer plate (2).

6. The insert injection-molded tailgate according to claim 1, characterized in that, The connecting fastener (10) is a rivet or a bolt.

7. The insert injection-molded tailgate according to claim 6, characterized in that, The connecting fastener (10) is a waterproof rivet.

8. The insert injection-molded tailgate according to claim 1, characterized in that, Near the ball head mounting hole, the inner plate (5) is also provided with an inner plate reinforcing rib (501), and the outer plate (2) is also provided with an outer plate reinforcing rib (201).

9. The insert injection-molded tailgate according to claim 1, characterized in that, Near the ball head mounting hole, the cavity formed between the inner plate (5) and the outer plate (2) has a U-shaped or L-shaped cross section.

10. The insert injection-molded tailgate according to claim 1, characterized in that, Near the hinge mounting hole, the adhesive layer (4) forms a continuous adhesive path around the hinge mounting hole; near the ball joint mounting hole, the adhesive layer (4) forms a continuous adhesive path around the ball joint mounting hole.

Images