Automobile front column decorative plate injection mold with inclined sliding ejection mechanism

Abstract

The automobile front column decorative plate injection mold with the inclined sliding ejection mechanism comprises a cavity template, and a cavity concave surface is arranged on the cavity template; a mold core convex surface is arranged on the mold core template, the mold core convex surface is matched with the mold cavity concave surface to form a main body mold cavity for forming the front column decorative plate main body, an inverted buckle insert is arranged in the mold core template, and an inverted buckle mold cavity is formed between the inverted buckle insert and the mold core template; and a glue feeding system is arranged on the cavity template, an ejection mechanism is arranged below the core template, an inclined sliding structure is arranged on the ejection mechanism, and the inclined sliding structure drives the inverted buckle insert to demold. According to the scheme, an inclined sliding ejection structure is adopted, the structure is simple, action is reliable, back-off demolding is smoothly achieved, production efficiency is high, and product quality is good.

Description

Technical Field

[0001] The utility model relates to an injection mould for a front pillar decorative plate of an automobile with an inclined sliding ejection mechanism, belonging to the field of injection moulds. Background Art

[0002] The front pillar decorative plate of the automobile, also called the A-pillar decorative plate, is usually processed and formed by injection molding. According to the product structure and appearance analysis, two undercuts are usually set on the back of the front pillar decorative plate for placing buckles, and the buckles are fixed to the front pillar body. After the front pillar decorative plate is formed, the undercuts need to be demolded before the front pillar decorative plate can be removed from the mold. The prior art generally adopts an oil cylinder internal extraction structure for the undercut demolding of the front pillar decorative plate, that is, an internal extraction oil cylinder is set at the bottom of the core of the mold, and a vertical core pulling slider group is set in the core. The vertical core pulling slider group drives the undercut insert to be pulled out of the undercut. The disadvantage of this structure is that since the vertical core pulling slider group is set in the core, the internal structure of the mold is complicated, and the processing and assembly are troublesome; in particular, it is easy to interfere with the cooling water hole in the core, and sometimes it is necessary to modify the route of the cooling water hole, which affects the cooling of the mold and the product. Therefore, its scope of use is limited. Summary of the invention

[0003] The utility model aims to overcome the shortcomings of the prior art and provide an automobile front pillar decorative plate injection mold with an inclined sliding ejection structure, which has a simple structure, reliable action and smoothly realizes undercut demoulding.

[0004] The technical solution of the injection mold of the automobile front pillar decorative plate with an inclined sliding ejection mechanism of the utility model is as follows:

[0005] A cavity template, wherein a cavity concave surface is arranged on the cavity template;

[0006] A core template, a core convex surface is arranged on the core template, the core convex surface cooperates with the cavity concave surface to form a main mold cavity for forming the main body of the front pillar decorative plate, an undercut insert is arranged in the core template, and an undercut mold cavity is formed between the undercut insert and the core template;

[0007] The method also includes arranging a glue feeding system on the cavity template, arranging an ejection mechanism under the core template, arranging an inclined sliding structure on the ejection mechanism, and the inclined sliding structure drives the undercut insert to be demoulded.

[0008] Furthermore, the glue feeding system includes a runner plate arranged on the cavity template, a hot runner arranged in the runner plate, a hot nozzle connected to the hot runner, a cavity panel arranged on the runner plate, a gate arranged on the cavity panel, the gate connected to the hot nozzle, and the hot nozzle connected to the main mold cavity.

[0009] Further, the ejection mechanism includes a mold foot arranged under the core template, a core bottom plate arranged under the mold foot, a lower ejector plate and an upper ejector plate arranged between the mold feet, an ejector pin connected to the upper ejector plate, an ejector block arranged in the core template, the ejector block cooperates with the main mold cavity, the ejector pin is connected to the ejector block, and the inclined sliding structure includes an inclined ejector rod arranged obliquely, the upper end of the inclined ejector rod is connected to an inverted insert, an inclined slide seat is arranged on the upper ejector plate, an inclined sliding block is arranged in the inclined sliding seat, the lower end of the inclined ejector rod is connected to the inclined sliding block, and an auxiliary structure is arranged on the inclined sliding block.

[0010] Furthermore, the auxiliary structure includes an auxiliary rod which is arranged in the inclined slide block and is parallel to the inclined ejector rod, the upper end of the auxiliary rod is connected to the core template, and the lower end of the auxiliary rod is connected to the core bottom plate.

[0011] Furthermore, a stop surface is arranged on the outer wall of the inclined ejector rod, and a stop block is arranged at the bottom of the core template, and the stop block cooperates with the stop surface.

[0012] The utility model of the automobile front pillar decorative plate injection mold with an inclined sliding ejection mechanism has the following beneficial effects:

[0013] 1. The inclined sliding structure is used to drive the undercut insert to be demoulded. The inclined sliding structure is set in the ejection mechanism, which has a simple structure and is easy to assemble;

[0014] Second, it does not occupy the internal space of the core template, which is convenient for the arrangement of cooling water holes and beneficial for the cooling of the mold and the product;

[0015] 3. With the auxiliary structure, the demoulding action of the inclined sliding structure is stable and reliable, which reduces downtime for maintenance and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the injection mold structure of the utility model;

[0017] Figure 2 It is a cross-sectional schematic diagram of the injection mold of the utility model;

[0018] Figure 3 It is a three-dimensional schematic diagram of the inclined sliding structure of the utility model. DETAILED DESCRIPTION

[0019] The following is in conjunction with the instruction manual Figure 1 —3. A detailed description of the technical solution of this application is given.

[0020] The utility model relates to an injection mold for a front pillar decorative plate of an automobile with an inclined sliding ejection mechanism, comprising:

[0021] A cavity template 1, on which a cavity concave surface is arranged;

[0022] A core template 2, on which a core convex surface is arranged, the core convex surface cooperates with a cavity concave surface to form a main mold cavity for forming a main body of a front pillar decorative plate, an undercut insert 5 is arranged in the core template, and an undercut mold cavity is formed between the undercut insert and the core template;

[0023] The method also includes arranging a glue feeding system on the cavity template 1, arranging an ejection mechanism under the core template 2, arranging an inclined sliding structure on the ejection mechanism, and the inclined sliding structure drives the undercut insert 5 to be demoulded.

[0024] During operation, the molten plastic raw material enters the main mold cavity and the undercut mold cavity through the glue feeding system, and is finally formed into the decorative panel main body 3 and the undercut 4 through pressure holding and shaping. After molding, the undercut 4 is buckled on the undercut insert 5, so it is necessary to demold first, and the core template 2 and the cavity template 1 are driven by power to open the mold. In the mold opening process, the undercut insert 5 is removed from the undercut 4 through the inclined sliding structure in the ejection mechanism, and the decorative panel main body 3 is ejected out of the mold by the ejection mechanism to achieve demolding.

[0025] Furthermore, the glue feeding system includes a runner plate 6 arranged on the cavity template, a hot runner 7 arranged in the runner plate, a hot nozzle 8 connected to the hot runner, a cavity panel 9 arranged on the runner plate, a gate 10 arranged on the cavity panel, the gate is connected to the hot nozzle, and the hot nozzle is connected to the main mold cavity. The hot runner and hot nozzle structure are adopted, the glue feeding speed is fast, the plastic raw material is filled evenly, the product has no shrinkage, and the quality is good.

[0026] Further, the ejection mechanism includes a mold foot 11 arranged under the core template, a core bottom plate 12 arranged under the mold foot, a lower ejector plate 13 and an upper ejector plate 14 arranged between the mold feet, an ejector 15 connected to the upper ejector plate, an ejector block 16 arranged in the core template, the ejector block cooperates with the main mold cavity, and the ejector is connected to the ejector block. The inclined sliding structure includes an inclined ejector rod 20 arranged obliquely, the upper end of the inclined ejector rod is connected to the undercut insert, an inclined slide seat 21 is arranged on the upper ejector plate, an inclined slider 22 is arranged in the inclined slider, the lower end of the inclined ejector rod is connected to the inclined slider 22, and an auxiliary structure is arranged on the inclined slider. In actual production, the lower ejector plate and the upper ejector plate are driven upward by power, and the upper ejector plate drives the inclined slider to move, so that the inclined slider in the inclined slider moves horizontally, thereby driving the undercut insert to move horizontally through the inclined ejector rod and escape from the undercut. At the same time, the upper ejector plate drives the ejector and the ejector block to eject the main body of the decorative plate out of the mold.

[0027] Furthermore, the auxiliary structure includes an auxiliary rod 23 that is parallel to the inclined ejector rod and is inserted into the inclined slider. The upper end of the auxiliary rod is connected to the core template, and the lower end of the auxiliary rod is connected to the core bottom plate. In the actual mold, the inclined ejector rod has an inclination angle greater than 15°, which is a large-angle inclined ejector rod. The inclined ejector rod itself is thin and long. The large-angle inclined ejector rod is prone to deformation and bending during the ejection process. Therefore, with the parallel auxiliary rod, the inclined slider moves upward and to one side along the auxiliary rod during the inclined ejection, which effectively prevents the inclined ejector rod from deforming, prolongs the service life of the inclined ejector rod, reduces the number of shutdowns for maintenance, and improves production efficiency.

[0028] Furthermore, a stop surface 24 is provided on the outer wall of the inclined ejector rod, and a stop block 25 is provided at the bottom of the core template. The stop block cooperates with the stop surface. With the cooperation between the stop block and the stop surface, the inclined ejector rod and the undercut insert can be prevented from rotating, thereby avoiding mold jamming accidents.

Claims

1. An injection mold for a front pillar trim panel of an automobile with an inclined sliding ejection mechanism, characterized in that include: A cavity template, wherein a cavity concave surface is arranged on the cavity template; A core template, a core convex surface is arranged on the core template, the core convex surface cooperates with the cavity concave surface to form a main mold cavity for forming the main body of the front pillar decorative plate, an undercut insert is arranged in the core template, and an undercut mold cavity is formed between the undercut insert and the core template; The method also includes arranging a glue feeding system on the cavity template, arranging an ejection mechanism under the core template, arranging an inclined sliding structure on the ejection mechanism, and the inclined sliding structure drives the undercut insert to be demoulded.

2. The automobile front pillar decorative plate injection mold with an inclined sliding ejection mechanism as claimed in claim 1, characterized in that The glue feeding system includes a runner plate arranged on the cavity template, a hot runner arranged in the runner plate, a hot nozzle connected to the hot runner, a cavity panel arranged on the runner plate, a gate arranged on the cavity panel, the gate connected to the hot nozzle, and the hot nozzle connected to the main mold cavity.

3. The automobile front pillar decorative plate injection mold with an inclined sliding ejection mechanism as claimed in claim 1, characterized in that The ejection mechanism includes a mold foot arranged under the core template, a core bottom plate arranged under the mold foot, a lower ejector plate and an upper ejector plate arranged between the mold feet, an ejector pin connected to the upper ejector plate, an ejector block arranged in the core template, the ejector block cooperates with the main mold cavity, the ejector pin is connected to the ejector block, and the inclined sliding structure includes an inclined ejector rod arranged obliquely, the upper end of the inclined ejector rod is connected to an inverted insert, an inclined slide seat is arranged on the upper ejector plate, an inclined sliding block is arranged in the inclined sliding seat, the lower end of the inclined ejector rod is connected to the inclined sliding block, and an auxiliary structure is arranged on the inclined sliding block.

4. The automobile front pillar decorative plate injection mold with an inclined sliding ejection mechanism as claimed in claim 3, characterized in that The auxiliary structure comprises an auxiliary rod which is arranged in the inclined slide block and is parallel to the inclined ejector rod. The upper end of the auxiliary rod is connected to the core template, and the lower end of the auxiliary rod is connected to the core bottom plate.

5. The automobile front pillar decorative plate injection mold with an inclined sliding ejection mechanism as claimed in claim 3, characterized in that A stop straight surface is arranged on the outer wall of the inclined ejector rod, and a stop block is arranged at the bottom of the core template, and the stop block matches the stop straight surface.

Images