An upper mold for a foaming mold of an automobile instrument panel

Abstract

The utility model discloses a kind of for the upper die of automobile instrument panel foaming mould, including upper die body and fixedly installed in the profiling die core in upper die body, profiling die core's left side and right side are all provided with installation groove, profiling sub-block is detachably installed in each installation groove, at least one layer of gasket is equipped between profiling sub-block and installation groove. By increasing or reducing the gasket quantity between profiling sub-block and installation groove, millimeter level fine adjustment of mould size is realized, destructive operation such as welding or polishing is completely avoided, reversible nondestructive adjustment is realized, and the adjustment process only needs to disassemble profiling sub-block and replace gasket, with low adjustment cost, short time consumption, the problem of high repair mould cost in the past is solved.

Description

Technical Field

[0001] This utility model relates to the field of foam mold technology, and in particular to an upper mold for foam molds used in automotive dashboards. Background Technology

[0002] In the automotive interior manufacturing industry, foam molding technology is widely used in the production of complex curved surface parts such as dashboards. As a core interior component of a car, the dashboard needs to be precisely assembled with the injection-molded covers on both sides of the dashboard. The size of the matching gap directly affects the product's appearance quality and sense of luxury.

[0003] Existing foaming molds generally employ a one-piece contour mold core structure, with the upper mold being a single cast part. When the foamed part (i.e., the dashboard) does not match well with surrounding parts (i.e., the injection-molded covers on both sides), for example, if the gap is too large, the dimensions of the foamed part need to be modified. This requires modifying the contour mold core in the foaming mold through methods such as welding and grinding, thereby changing the state of the foamed product to solve its matching problem with other parts. Because the existing contour mold core is a one-piece structure, modifying the mold core is irreversible, and in practical applications, multiple modifications are often required to achieve the ideal state, resulting in long mold repair times and high costs. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an upper mold for foaming molds for automotive dashboards. This upper mold solves the problem of high mold repair costs by improving the structure of the mold core.

[0005] To solve the above-mentioned technical problems, this utility model discloses an upper mold for a foaming mold for an automotive dashboard, including an upper mold body and a contour mold core fixedly installed in the upper mold body. The contour mold core has mounting grooves on its left and right sides, and contour blocks can be detachably installed in each mounting groove. At least one layer of gasket is provided between the contour blocks and the mounting grooves.

[0006] It also includes multiple countersunk screws, each contouring block has multiple spaced mounting holes, and the contouring mold core has multiple spaced threaded holes. Each mounting hole is axially aligned with one of the threaded holes. After the countersunk screws are inserted into the mounting holes, they are threadedly connected to the threaded holes, so that the contouring blocks can be detachably mounted on the contouring mold core.

[0007] In this case, the axis of the countersunk screw is perpendicular to the plane of the washer.

[0008] Each mounting slot has a limit hole at its bottom, and each contour mold core has a positioning boss extending from its bottom. In the assembled state, the positioning boss is inserted into the limit hole.

[0009] The positioning boss is fixedly installed with a locking pin cylinder located inside the mold core. The end of the telescopic rod of the locking pin cylinder is fixed with a locking pin body for fixing the external foaming parts. The positioning boss has a locking pin hole that penetrates the mold core. The locking pin body passes through the limiting hole and the locking pin hole in sequence and then extends to the outside of the mold core.

[0010] The side wall of the positioning boss and the inner wall of the mounting groove are fitted with a clearance, and the size of the clearance between them is the clearance value H, 0.05mm≤H≤0.2mm.

[0011] Each gasket is a thin stainless steel sheet with a thickness of 0.1mm, 0.2mm, or 0.5mm, or a combination of two or more of these thicknesses.

[0012] The depth of the mounting groove is greater than the thickness of the mold core, and the difference between the two is equal to the total thickness of the gasket.

[0013] Compared with the prior art, the embodiments of this utility model have the following beneficial effects:

[0014] (1) By increasing or decreasing the number of shims between the contouring blocks and the mounting slot, the mold size can be finely adjusted at the millimeter level, completely avoiding destructive operations such as welding or grinding, and achieving reversible and non-destructive adjustment. The adjustment process only requires disassembling and assembling the contouring blocks and replacing the shims, resulting in low adjustment cost and short time consumption, thus solving the problem of high mold repair cost in the past.

[0015] (2) The overall structure is simple and compact, with strong compatibility. The modular design is compatible with existing mold structures. It can also be used for the production of foamed parts of different specifications by changing different contoured blocks, without the need to modify the press or production line. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the upper mold in the embodiment;

[0018] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 This is a schematic diagram of the upper mold body in the embodiment;

[0020] Figure 4 yes Figure 3 Enlarged view of point B in the middle;

[0021] Figure 5 This is a schematic diagram of the contour-following block structure in the embodiment;

[0022] Figure 6 This is a structural schematic diagram of the upper mold from another perspective in the embodiment;

[0023] Figure 7 yes Figure 6 Enlarged view of point C in the middle. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, mechanism, product, or server that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or servers.

[0026] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0027] This utility model discloses a specific embodiment of the upper mold for a foaming mold of an automotive dashboard. Please see [link / reference]. Figures 1 to 2 The upper mold includes an upper mold body 1 and a mold core 2 fixedly installed inside the upper mold body 1. The mold core 2 can be fixedly installed on the upper mold body 1 by bolts. In this embodiment, the mold core 2 and the mold core are integrally formed and are both manufactured by casting.

[0028] In some embodiments, combined with Figures 1 to 4The mold core 2 has mounting slots 21 on both its left and right sides. Each mounting slot 21 can be detachably fitted with a contouring block 3. The outer contour of the contouring block 3 matches the outer contour of the mold core 2, meeting the production requirements of foamed parts. Specifically, each contouring block 3 has multiple spaced mounting holes 31, preferably countersunk holes with a countersunk head structure. The mold core 2 has multiple spaced threaded holes 23, with each mounting hole 31 axially aligned with one of the threaded holes 23. The upper mold also includes multiple countersunk screws (not shown). After the countersunk screws are inserted into the mounting holes 31, they are threaded into the threaded holes 23, allowing the contouring block 3 to be detachably mounted on the mold core 2. In practical applications, only the countersunk screws need to be removed to replace the shims. The shims are placed between the contouring block 3 and the mounting slot 21. By increasing or decreasing the number of shims between the contouring block 3 and the mounting slot 21, millimeter-level fine adjustments to the mold dimensions can be achieved. The washer can be replaced simply by removing the countersunk screw, allowing for quick assembly and disassembly. In other embodiments, the contouring block 3 can also be detachably connected to the contouring mold core 2 via snap-fit ​​or other means.

[0029] In addition, at least one layer of shims (not shown in the figure) is provided between the contour block 3 and the mounting groove 21. By increasing or decreasing the number of shims between the contour block 3 and the mounting groove 21, millimeter-level fine adjustments to the mold size can be achieved, completely avoiding destructive operations such as welding or grinding, and realizing reversible and non-destructive adjustment. The adjustment process only requires disassembling and assembling the contour block 3 and replacing the shims, resulting in low adjustment costs and short time consumption, solving the problem of high mold repair costs in the past. Each shim is a thin stainless steel sheet with a thickness of 0.1mm, 0.2mm, or 0.5mm, or a combination of two or more of these thicknesses. These three thicknesses of shims are standardized shims, readily available, and easy to process and produce. The three specifications of shims can be stacked to cover an adjustment range of 0.1mm to 3.0mm, meeting 98% of mold repair needs. The stainless steel shims have a deformation of <0.005mm under 10MPa pressure and a lifespan of >500 cycles, exhibiting a long service life.

[0030] In this embodiment, the number of mounting holes 31 can be eight. The eight-hole arrangement ensures uniform stress on the contoured block 3 and resistance to foaming pressure impact >10kN. Furthermore, the mounting holes 31 and threaded holes 23 are axially aligned to prevent assembly misalignment of the contoured block 3. In some embodiments, the axis of the countersunk screw is perpendicular to the plane of the washer, ensuring uniform vertical tightening force is transmitted to the washer, eliminating washer deformation caused by shear stress, and effectively extending the service life of the washer.

[0031] Combination Figures 4 to 6Each mounting slot 21 has a limiting hole at its bottom, and each contour mold core 2 has a positioning boss 32 extending from its bottom. In the assembled state, the positioning boss 32 is inserted into the limiting hole. The cooperation between the positioning boss 32 and the limiting hole can limit the horizontal displacement of the contour block 3, ensuring the continuity of the curved surface contour of the mold cavity. In addition, during the assembly process of the contour block 3, the positioning boss 32 plays a guiding role, shortening the adjustment and assembly time.

[0032] In this embodiment, a locking pin cylinder 41 located inside the contour mold core 2 is fixedly installed on the positioning boss 32. The end of the telescopic rod of the locking pin cylinder 41 is fixedly connected to a locking pin body 42 for fixing the external foaming parts. The positioning boss 32 has a locking pin hole that penetrates the contour block 3. The locking pin body 42 passes through the limiting hole and the locking pin hole in sequence and extends to the outside of the contour mold core 2. The locking pin body 42 is driven and adjusted by the locking pin cylinder 41, which can ensure that the position of the locking pin body 42 changes synchronously after the contour block 3 is adjusted, ensuring that the positioning point of the foaming parts matches the contour of the contour block 3, and has the characteristic of dynamic positioning consistency. In some embodiments, the side wall of the positioning boss 32 and the inner wall of the mounting groove 21 are clearance-fitted, and the size of the gap between them is the gap value H, 0.05mm≤H≤0.2mm. The gap absorbs the thermal expansion during the foaming process, prevents the blocks from jamming, and provides displacement margin for adding or removing gaskets, avoiding over-constraint.

[0033] In this embodiment, the depth of the mounting groove 21 is greater than the thickness of the contour mold core 2, and the difference between the two is equal to the total thickness of the gaskets. This provides a safety margin for the stacking of gaskets, ensuring that the gaskets are 100% fitted to the bottom of the mounting groove 21 when the countersunk screws are tightened, eliminating assembly gaps, and also preventing the contour block 3 from lifting up under high-temperature conditions.

[0034] The upper mold in this embodiment has a simple and compact overall structure, strong compatibility, and a modular design that is compatible with existing mold structures. It can also be used for the production of foamed parts of different specifications by replacing different contoured blocks 3, without the need to modify the press or production line.

[0035] Finally, it should be noted that the upper mold for a foaming mold for an automotive dashboard disclosed in this utility model embodiment is only a preferred embodiment of this utility model and is only used to illustrate the technical solution of this utility model, not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of this utility model.

Claims

1. An upper mold for a foaming mold of an automotive dashboard, comprising an upper mold body and a contour mold core fixedly installed within the upper mold body, characterized in that, The mold core has mounting slots on its left and right sides, and each mounting slot can be detachably installed with a mold block. At least one gasket is provided between the mold block and the mounting slot.

2. The upper mold for a foaming mold of an automotive dashboard according to claim 1, characterized in that, It also includes multiple countersunk screws, each of the contouring blocks has multiple spaced mounting holes, and the contouring mold core has multiple spaced threaded holes. Each mounting hole is axially aligned with one of the threaded holes. After the countersunk screw is inserted into the mounting hole, it is threadedly connected to the threaded hole, so that the contouring block can be detachably mounted on the contouring mold core.

3. The upper mold for a foaming mold of an automotive dashboard according to claim 2, characterized in that, The axis of the countersunk screw is perpendicular to the plane of the washer.

4. The upper mold for a foaming mold of an automotive dashboard according to claim 1, characterized in that, Each of the mounting slots has a limiting hole at its bottom, and each of the contour mold cores has a positioning boss extending from its bottom. In the assembled state, the positioning boss is inserted into the limiting hole.

5. The upper mold for a foaming mold of an automotive dashboard according to claim 4, characterized in that, The positioning boss is fixedly installed with a locking pin cylinder located inside the mold core. The telescopic rod end of the locking pin cylinder is fixedly connected with a locking pin body for fixing the external foaming parts. The positioning boss has a locking pin hole that penetrates the mold core. The locking pin body passes through the limiting hole and the locking pin hole in sequence and then extends to the outside of the mold core.

6. The upper mold for a foaming mold of an automotive dashboard according to claim 4, characterized in that, The side wall of the positioning boss is clearance-fitted with the inner wall of the mounting groove, and the gap between them is H, where 0.05mm≤H≤0.2mm.

7. The upper mold for a foaming mold for an automotive dashboard according to any one of claims 1-6, characterized in that, Each of the gaskets is a stainless steel sheet with a thickness of 0.1 mm, 0.2 mm, or 0.5 mm, or a combination of two or more of these thicknesses.

8. The upper mold for a foaming mold for an automotive dashboard according to any one of claims 1-6, characterized in that, The depth of the mounting groove is greater than the thickness of the mold core, and the difference between the two is equal to the total thickness of the gasket.

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