A mold and method for securing an airbag cage mesh insert

Abstract

The application provides a mold and a method for fixing a gas bag frame net cloth insert, the mold comprises, from top to bottom, a movable mold plate, a first ejection plate, a second ejection plate and a bottom plate, and further comprises an inclined ejection structure, the inclined ejection structure comprises a first inclined ejection, a second inclined ejection and a cylinder inclined ejection, the first inclined ejection comprises a first inclined ejection block and a first inclined ejection rod, the first inclined ejection rod is arranged on the first ejection plate, the second inclined ejection comprises a second inclined ejection block and a second inclined ejection rod, the second inclined ejection rod is arranged on the second ejection plate, the second inclined ejection block is embedded on the upper end of the first inclined ejection block, the cylinder inclined ejection comprises a cylinder and a third inclined ejection block, and the third inclined ejection block is arranged below the first inclined ejection block. The mold and the method provided by the application solve the problem of unstable fixation of the net cloth insert on the mold, the net cloth insert can keep the position unchanged during the process of injecting the gas bag frame, the product is convenient to eject after molding, the cost is saved under the condition of meeting the quality requirement, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to injection mold technical field, specifically to a kind of for fixing air bag frame mesh cloth insert mould and method. BACKGROUND

[0002] Injection molding process refers to the process of making a certain shape of product by the operation of pressurizing, injecting, cooling and separating, and the product of injection molding has many types, and the process and mold structure of pure plastic product are slightly simple, and the process and mold structure of product with insert are relatively complex, and mesh cloth is the most common insert, especially in the air bag part of automobile instrument panel injection molding, a layer of mesh cloth is embedded on the surface of product to meet the use requirement, and its general shape is as shown in Figure 1 .

[0003] In actual production process, the positioning and placement of mesh cloth become a problem, and the conventional cloth hanging mechanism has the defects that mesh cloth is not fixed stably on mold or produces cloth hanging needle indentation on the surface of product, because the structure of cloth hanging needle in the prior art cannot be well controlled in the injection cavity, and the degree of automation is not high, and the efficiency is relatively low. Not only waste raw materials, but also increase the production cycle of product, reduce overall production capacity, and if product mesh cloth deflection cannot be found, it will be treated as qualified product, which will have major quality risks. SUMMARY

[0004] In view of the problems existing in the prior art, the present application provides a kind of for fixing air bag frame mesh cloth insert mould and method, which is reasonable in design, overcomes the shortcomings of prior art, and has good effect.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0006] A mold for fixing air bag frame mesh cloth insert, from top to bottom, includes movable mold plate, first ejection plate, second ejection plate and bottom plate, and also includes inclined ejection structure, the inclined ejection structure includes first inclined ejection, second inclined ejection and oil cylinder inclined ejection, the first inclined ejection includes first inclined ejection block and first inclined ejection rod, the first inclined ejection rod is arranged on the first ejection plate, the second inclined ejection includes second inclined ejection block and second inclined ejection rod, the second inclined ejection rod is arranged on the second ejection plate, the second inclined ejection block is embedded on the upper end of the first inclined ejection block, the oil cylinder inclined ejection includes oil cylinder and third inclined ejection block, and the third inclined ejection block is arranged below the first inclined ejection block.

[0007] Further, the upper end surface, left end surface and lower end surface of the first inclined ejection block are product forming surfaces, and the injection cavity is formed between the upper end surface of the first inclined ejection block and the second inclined ejection block, and between the lower end surface of the first inclined ejection block and the third inclined ejection block.

[0008] Further, the third inclined ejector block is fixedly connected with the telescopic rod of the oil cylinder, and the oil cylinder is fixed on the movable mold plate.

[0009] Further, the downhill angles of the first inclined ejector block and the second inclined ejector block are different, so that the distance between the first inclined ejector block and the second inclined ejector block gradually increases when the two blocks are withdrawn from the product.

[0010] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0011] A method for fixing a net cloth insert of an air bag frame, according to the mold for fixing the net cloth insert of the air bag frame as described above, comprising the following steps:

[0012] S1, before clamping, the first inclined ejector block and the second inclined ejector block are upwardly ejected by a first ejection plate and a second ejection plate by a distance, the first ejection plate stops moving, and the second ejection plate continues to upwardly eject the second inclined ejector block by a distance and then stops;

[0013] S2, a robot places a preformed net cloth insert on a product forming surface of the second inclined ejector block;

[0014] S3, the second ejection plate drives the second inclined ejector block to retreat, and the first inclined ejector block and the second inclined ejector block jointly fix the upper end of the net cloth insert, and an oil cylinder drives the third inclined ejector block to eject, and the first inclined ejector block and the second inclined ejector block jointly fix the lower end of the net cloth insert;

[0015] S4, the first inclined ejector block, the second inclined ejector block and the third inclined ejector block retreat into a core together, clamping is performed, and cooling is performed after injection molding is completed;

[0016] S5, after cooling is completed, the third inclined ejector block is stationary, the first ejection plate and the second ejection plate upwardly eject the first inclined ejector block and the second inclined ejector block together, the first inclined ejector block and the second inclined ejector block are withdrawn from the formed product, and a robot takes away the formed product;

[0017] S6, the second ejection plate continues to upwardly eject the second inclined ejector block, and the robot repositions a preformed net cloth, and steps S3, S4 and S5 are repeated.

[0018] The present application has the following beneficial technical effects:

[0019] The mold and the method provided by the present application well solve the problem of unstable fixation of the net cloth insert on the mold, the net cloth insert can be kept in position during injection molding of the air bag frame, the formed product is convenient to eject, the cost is saved, and the production efficiency is improved under the condition of meeting the quality requirement. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a sectional view of the net cloth insert in the present application;

[0021] Figure 2 A schematic view of a mold structure for fixing the air bag frame mesh insert in the present application;

[0022] Figure 3 A sectional view of the first inclined ejector, the second inclined ejector and the oil cylinder inclined ejector not being ejected in the present application;

[0023] Figure 4 A sectional view of the first inclined ejector and the second inclined ejector being ejected for the first time in the present application;

[0024] Figure 5 A sectional view of the second inclined ejector being ejected for the second time in the present application;

[0025] Figure 6 A sectional view of the second inclined ejector being retracted and the oil cylinder inclined ejector being ejected in the present application;

[0026] Figure 7 A sectional view of the mold and the product after injection molding in the present application;

[0027] Figure 8 A sectional view of the mold and the product when the mechanical hand takes away the product in the present application;

[0028] 101-first inclined ejector block; 102-first inclined ejector rod; 201-second inclined ejector block; 202-second inclined ejector rod; 301-third inclined ejector block; 302-oil cylinder; 4-mesh insert; 5-product; DETAILED DESCRIPTION

[0029] The accompanying drawings are only used for illustrative description and cannot be understood as a limitation of the present application; the terms "upper", "lower", "front", "back", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, and do not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0030] In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include at least one of the features.

[0031] The specific embodiments of the present application will be further described below in conjunction with the drawings and specific examples:

[0032] A mold for fixing the air bag frame mesh insert, from top to bottom, includes a movable mold plate, a first-time ejection plate, a second-time ejection plate and a bottom plate, the bottom plate is symmetrically provided with mold feet at the left and right ends, for supporting the movable mold plate and providing a ejection stroke space for the ejection of the molded product.

[0033] The mold structure further includes an inclined ejection structure, such asFigure 2 and 3 As shown, the inclined jack includes a first inclined jack, a second inclined jack, and a hydraulic cylinder inclined jack. The first inclined jack includes a first inclined jack block 101 and a first inclined jack rod 102. The first inclined jack rod 102 is set on the first ejection plate. The second inclined jack includes a second inclined jack block 201 and a second inclined jack rod 202. The second inclined jack rod 202 is set on the second ejection plate. The hydraulic cylinder inclined jack includes a third inclined jack block 301 and a hydraulic cylinder 302. The hydraulic cylinder 302 is fixed on the moving template, and the hydraulic cylinder telescopic rod is fixedly connected to the third inclined jack block 301.

[0034] The upper, left, and lower surfaces of the first inclined ejector block 101 are the product molding surfaces. A groove is provided on its upper surface, and the second inclined ejector block 201 is disposed within this groove. The second inclined ejector block 201 and the first inclined ejector block 101 together form the injection cavity for the side wall of the airbag frame of the injection-molded product. The third inclined ejector block 301 is located below the first inclined ejector block 101, and the lower surface of the first inclined ejector block 101 and the third inclined ejector block 301 together form the injection cavity for the side wall of the airbag frame of the injection-molded product. Before injection molding, the first inclined ejector block 101 is ejected, and the robotic arm places the mesh insert 4 on the three product molding surfaces of the first inclined ejector block 101, forming an n-shape. The second and third inclined ejector blocks 201 ensure that the mesh insert is fixed and stationary during the retraction of the first inclined ejector block 101 into the cavity, preventing any tilting.

[0035] The left end face of the second inclined ejector block is also the product forming surface. Since the slope of the left end forming surface of the first inclined ejector block 101 and the left end forming surface of the second inclined ejector block 201 are different, in this embodiment, the downslope angle of the first inclined ejector block 101 and the downslope angle of the second inclined ejector block 201 differs by two degrees. That is, the movement angle of the first inclined ejector block 101 and the second inclined ejector block 201 relative to the product 5 differs by two degrees. Therefore, when the first inclined ejector block 101 and the second inclined ejector block 201 exit the product 5, the distance between them becomes larger and larger.

[0036] A method for fixing an airbag frame mesh insert, using the aforementioned mold for fixing an airbag frame mesh insert, includes the following steps:

[0037] S1. Before mold closing, such as Figure 4 As shown, the first ejector plate and the second ejector plate, through the first inclined ejector rod 102 and the second inclined ejector rod 202, push the first inclined ejector block 101 and the second inclined ejector block 201 upwards a certain distance, after which the first ejector plate stops moving, and the second ejector plate, through the second inclined ejector rod 202, continues to push the second inclined ejector block 201 upwards a certain distance before stopping, as... Figure 5 As shown;

[0038] S2. The robotic arm places the pre-formed mesh insert 4 onto the product forming surface of the first inclined top block 101;

[0039] S3, the second ejection plate drives the second inclined top block 201 back through the second inclined top rod 202, and the first inclined top block 101 is fixed on the upper end of the mesh insert 4, and the oil cylinder 302 drives the third inclined top block 301 to be ejected, and the first inclined top block 101 is fixed on the lower end of the mesh insert 4, as shown in Figure 6 ;

[0040] S4, the first inclined top block 101, the second inclined top block 201 and the third inclined top block 301 are retracted into the mold core through the first ejection plate, the second ejection plate and the oil cylinder 302, and the mold is closed and injection molded, and after the injection molding is completed, it is cooled, as shown in Figure 7 ;

[0041] S5, after cooling, the third inclined top block 301 does not move, the first ejection plate and the second ejection plate drive the first inclined top block 101 and the second inclined top block 201 to be ejected upward through the first inclined top rod 102 and the second inclined top rod 202, so that the first inclined top block 101 and the second inclined top block 201 exit the molded product, and the manipulator takes away the molded product 5, as shown in Figure 8 ;

[0042] S6, the second ejection plate continues to drive the second inclined top block 201 upward through the second inclined top rod 202, and the manipulator repositions the pre-formed mesh insert 4, and repeats steps S3, S4 and S5.

[0043] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0044] Of course, the above description is not a limitation of the present application, and the present application is not limited to the above examples, and changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present application should also be within the scope of the present application.

Claims

1. A mold for fixing a gas bag frame cloth insert, comprising, in order from top to bottom, a movable mold plate, a first ejection plate, a second ejection plate, and a bottom plate, characterized in that, Also include the inclined top structure, the inclined top structure includes first inclined top, second inclined top and oil cylinder inclined top, the first inclined top includes first inclined top block and first inclined top rod, first inclined top rod is arranged on the first time ejection plate, the second inclined top includes second inclined top block and second inclined top rod, second inclined top rod is arranged on the second time ejection plate;The second inclined top block is embedded on the first inclined top block upper end, and the oil cylinder inclined top includes oil cylinder and third inclined top block, and the third inclined top block is arranged below the first inclined top block; The upper end face, left end face and lower end face of the first inclined top block are product forming surfaces, and the upper end face of the first inclined top block and the second inclined top block and the lower end face of the first inclined top block and the third inclined top block form injection cavities for injection molding of the sidewall of the airbag frame; The third inclined top block is fixedly connected with the telescopic rod of the oil cylinder, and the oil cylinder is fixed on the movable die plate; The second inclined top block and the first inclined top block are fixedly connected to the upper end of the mesh insert, and the third inclined top block and the first inclined top block are fixedly connected to the lower end of the mesh insert.

2. A mold for securing an air bag cage cloth insert according to claim 1, wherein The downhill angles of the first inclined top and the second inclined top are different, so that when the first inclined top block and the second inclined top block are withdrawn from the product, the distance between them gradually increases.

3. A method for securing an airbag cage webbing insert, comprising: A mold for fixing an airbag frame mesh insert according to claim 1 or 2, comprising the following steps: S1, before clamping, the first time ejection plate and the second time ejection plate eject the first inclined top block and the second inclined top block upward by a distance, the first time ejection plate stops moving, and the second time ejection plate continues to eject the second inclined top block upward by a distance and then stops; S2, the robot places the preformed mesh insert on the product forming surface of the second inclined top block; S3, the second time ejection plate drives the second inclined top block to retreat, and the first inclined top block and the second inclined top block are fixedly connected to the upper end of the mesh insert, and the oil cylinder drives the third inclined top block to eject, and the first inclined top block and the third inclined top block are fixedly connected to the lower end of the mesh insert; S4, the first inclined top block, the second inclined top block and the third inclined top block retreat together into the core, clamping and injection molding, and cooling after injection molding is completed; S5, after cooling is completed, the third inclined top block is stationary, and the first time ejection plate and the second time ejection plate eject the first inclined top block and the second inclined top block upward together, so that the first inclined top block and the second inclined top block are withdrawn from the molded product, and the robot takes away the molded product; S6, the second time ejection plate continues to eject the second inclined top block upward, and the robot places the preformed mesh insert again, and steps S3, S4 and S5 are repeated.

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