Foaming mold

Abstract

The utility model relates to a foaming mould which comprises an upper mould and a lower mould, each of the upper mould and the lower mould comprises a bottom plate and a mould body arranged on the bottom plate, after the upper mould and the lower mould are assembled, the inner sides of the two mould bodies are spliced to form a cavity, and the foaming mould further comprises one or more exhaust devices which are distributed on the upper mould and the lower mould. The number of the first through holes is the same as that of the exhaust devices in the corresponding mold body, the exhaust devices correspond to the first through holes one to one, and each exhaust device comprises an air cylinder module fixed to the corresponding bottom plate and located on the outer side of the mold body; and the puncturing needles are fixed to the output ends of the air cylinder modules, the straight lines where the axes are located penetrate through the corresponding first through holes and do not intersect with the corresponding mold bodies, and the puncturing needles are used for penetrating through the first through holes to be inserted into the mold cavities under the action of the air cylinder modules. Compared with the prior art, the utility model has the advantages of improving the yield and waterproof performance of foaming parts and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile noise reduction part preparation tool, especially to a foaming mould. BACKGROUND

[0002] The automobile NVH performance is the focus of the medium and high end vehicle, compared to the traditional asphalt material, foaming part can improve the NVH level while more environmental protection, also conducive to weight reduction, so as to reduce the energy consumption of the vehicle.

[0003] The foaming part is made of foam material, and the foam material is a kind of light, high porosity, low density material, which has excellent sound insulation, heat insulation and shock absorption characteristics.

[0004] A typical working condition of the foaming part is applied between the automobile front hub and the fender, specifically, there is a large cavity between the automobile front hub and the fender, when the vehicle is running at high speed, the tire noise and wind noise from the vehicle will be amplified in the cavity, which will affect the riding experience. If a foaming part can be placed in the cavity, the sound absorption, heat insulation and shock absorption characteristics of the foaming material can well solve the NVH level of the whole vehicle and improve the driving experience.

[0005] However, the foaming part is afraid of water, and in the prior art, the foaming part itself does not have waterproof ability, and it mainly depends on being arranged in some places not contacting water, because the foaming part itself is applied to medium and high end vehicles, the whole vehicle has good sealing performance, and the position is set relatively inward, but now, with the continuous improvement of the requirement of NVH performance, the foaming part is applied to more scenes, especially some cavities with poor sealing performance, at this time, in order to solve the waterproof problem, a layer of plastic film needs to be covered outside the foaming part.

[0006] The foaming part is processed by using a foaming mould, specifically, the foaming material is filled into the cavity, and then the moulding is formed. In the moulding process, gas needs to be dispersed outwardly. The ordinary foaming part only needs to open a gas discharge groove at the edge of the mould to solve the moulding and gas discharge problems of the mould, but this new type of waterproof foaming part needs to rely on the high pressure of the internal film due to the external covering of the plastic film. In this way, first, the position of the crack is difficult to predict, and it may be in some positions more easily contacting water. Second, the high pressure will make it difficult to prepare the foaming part according to the design parameters, thereby resulting in low yield. UTILITY MODEL CONTENTS

[0007] The utility model discloses a foaming mould, through being provided with the exhaust device with puncture needle on the upper die and lower die, thereby one aspect, in the foaming part forming process with film, can utilize the action of puncture needle puncture film to facilitate exhaust, thereby can avoid the problem of good product rate reduction caused by high pressure in part, and puncture position is controllable, on the other hand, because the upper and lower mould are all equipped with exhaust device, thereby can according to the form and installation position of part, select corresponding exhaust device action, so as to puncture the place located not easy to contact water.

[0008] The utility model discloses a foaming mould, through being provided with the exhaust device with puncture needle on the upper die and lower die, thereby one aspect, in the foaming part forming process with film, can utilize the action of puncture needle puncture film to facilitate exhaust, thereby can avoid the problem of good product rate reduction caused by high pressure in part, and puncture position is controllable, on the other hand, because the upper and lower mould are all equipped with exhaust device, thereby can according to the form and installation position of part, select corresponding exhaust device action, so as to puncture the place located not easy to contact water.

[0009] A foaming mould, including upper die and lower die, the upper die and lower die all include bottom plate and be equipped with the mould body on bottom plate, after the upper die and lower die close mould, the inside splicing of two mould bodies forms cavity, still include one or more exhaust device, all distribute on the upper die and lower die, corresponding the first through -hole of mould body on exhaust device number identity, the exhaust device and first through -hole one -to -one, wherein:

[0010] The exhaust device includes:

[0011] Cylinder module, fixed on corresponding bottom plate, and located the outside of mould body;

[0012] Puncture needle, fixed on the output end of cylinder module, the straight line of the axis passes through corresponding first through -hole and does not intersect with corresponding mould body, for under the action of cylinder module, through first through -hole inserts into cavity.

[0013] The mould body can be detachably fixed on the bottom plate.

[0014] The mould body is fixed on the bottom plate by bolts.

[0015] The axis of the puncture needle and the center line of the first through -hole are on a straight line.

[0016] The axis of the puncture needle and the output shaft of the cylinder module are on a straight line.

[0017] The cylinder module includes a cylinder body and a solenoid valve, and the solenoid valve is arranged on the gas path of the cylinder body and connected to an upper controller.

[0018] The solenoid valve is a double-line solenoid valve.

[0019] The bottom plate includes a base support and a mounting plate arranged on the base support, and the exhaust device is fixed on the mounting plate.

[0020] The mounting plate is parallel to the closing direction.

[0021] The exhaust devices on the mounting plate are distributed on both sides of the mounting plate.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] 1、 through setting up the exhaust device with the puncture needle on the upper die and the lower die, can puncture the film to facilitate exhaust in the foaming part forming process with the film, thereby can avoid the problem of yield reduction caused by high pressure in the part, and the puncture position is controllable, on the other hand, since the upper and lower molds are provided with exhaust devices, the corresponding exhaust device action can be selected according to the shape and installation position of the part, so that the puncture position is located in the position not easy to contact water.

[0024] 2、 the mold body can be detachably fixed on the bottom plate, so that different mold bodies can be replaced according to different parts, without the need to reset the exhaust device and the bottom plate.

[0025] 3、 the axis of the puncture needle and the center line of the first through hole are on a straight line, which can have a shorter stroke and be more energy-saving.

[0026] 4、 the electromagnetic valve is a double-line electromagnetic valve, which can have lower cost under the condition of meeting the requirements.

[0027] 5、 the exhaust device is fixed by the mounting plate, and the exhaust devices on the mounting plate are distributed on both sides of the mounting plate, so that more exhaust devices can be installed in limited space, so that the actual puncture position can be more flexibly selected, and the waterproof performance of the part is improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a structure schematic view of the lower die of the utility model;

[0029] Figure 2 It is a layout schematic view of the exhaust device on the lower die;

[0030] Figure 3 It is Figure 1 a sectional view;

[0031] Among them: 1, bottom plate, 2, mold body, 3, cylinder module, 4, puncture needle, 1-1, base support, 1-2, mounting plate. DETAILED DESCRIPTION

[0032] The utility model will be described in detail in combination with the drawings and specific embodiments. The embodiment is implemented on the premise of the technical scheme of the utility model, and gives detailed implementation mode and specific operation process, but the protection scope of the utility model is not limited to the following examples.

[0033] It should be noted that like reference numerals and letters refer to like items in the several views, and that no further definitions and explanations of a certain item are required in the subsequent drawings once the item has been defined in one drawing.

[0034] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "proximal end", "distal end", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Physical quantities in the formula, such as no separate marking, should be understood as basic quantities of international system of units, or derived quantities derived from basic quantities by multiplication, division, differentiation or integration, etc.

[0035] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0036] In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0037] Some embodiments of the utility model will be described in detail below in combination with the drawings. In the case of no conflict, the following examples and features in the examples can be combined with each other.

[0038] A kind of foaming mould, including upper die and lower die, as shown in Figure 1 And Figure 2 Upper die and lower die both include bottom plate 1 and the mould body 2 arranged on bottom plate 1, after the closing of upper die and lower die, the inner side of two mould bodies is spliced to form cavity, it further includes one or more exhaust devices, all distributed on upper die and lower die, corresponding the number of exhaust devices on the first through hole of mould body 2, exhaust device and first through hole one-to-one correspondence, wherein:

[0039] As shown in Figure 3As shown, the exhaust device comprises:

[0040] The cylinder module 3 is fixed on the corresponding base plate 1 and located outside the mold body 2;

[0041] The piercing needle 4 is fixed on the output end of the cylinder module 3, and the axis is located on a straight line passing through the corresponding first through hole and not intersecting the corresponding mold body 2, and is used to be inserted into the cavity through the first through hole under the action of the cylinder module 3.

[0042] By providing the exhaust device with the piercing needle 4 on both the upper mold and the lower mold, on the one hand, during the molding of the foaming part with the film, the film can be pierced by the action of the piercing needle 4 to facilitate exhaust, so that the problem of yield reduction caused by high pressure in the part can be avoided, and the piercing position is controllable, on the other hand, since the exhaust device is provided on both the upper mold and the lower mold, the corresponding exhaust device can be selected according to the shape and installation position of the part, so that the piercing position is located in a position not easy to contact water.

[0043] In some embodiments, the mold body 2 can be detachably fixed on the base plate 1, so that different mold bodies 2 can be replaced according to different parts, without the need to reconfigure the exhaust device and the base plate 1. Specifically, in some embodiments, the mold body 2 is fixed on the base plate 1 by bolts, of course, in other embodiments, other fixing methods can also be used, but no matter which fixing method is used, it should be stable and reliable, and those skilled in the art can choose the appropriate fixing method under this requirement.

[0044] In addition, in some preferred embodiments, the axis of the piercing needle 4 and the center line of the first through hole are on a straight line, which can have a shorter stroke and be more energy-saving, of course, this is related to the development of the mold, in some scenarios, it can also not be guaranteed to be on a straight line, but it is necessary to ensure that the piercing needle 4 will not scratch the mold body 2 during its entire stroke.

[0045] Similarly, the axis of the piercing needle 4 and the axis of the output shaft of the cylinder module 3 are on a straight line, which is designed to be more energy-saving.

[0046] Generally, similar to the prior art, the cylinder module 3 comprises a cylinder body and an electromagnetic valve, the electromagnetic valve is arranged on the gas path of the cylinder body and connected to the upper controller. In particular, in the present application, the electromagnetic valve is a double-line electromagnetic valve, which can have lower cost under the condition of meeting the requirements. In addition, in some embodiments, the upper controller can be used to select which cylinder module 3 of the exhaust device is actuated. The specific selection and the actuation of the cylinder module 3 belong to the conventional means in the art, for example, the control line of the electromagnetic valve is connected to the upper controller, and the actuation of the cylinder module 3 is realized by controlling the potential of the electromagnetic valve. Since it belongs to the prior art, it will not be expanded.

[0047] In addition, in some embodiments, the bottom plate 1 comprises a base support 1-1 and a mounting plate 1-2 arranged on the base support, the exhaust device is fixed on the mounting plate 1-2, the mounting plate 1-2 is parallel to the closing direction, and the exhaust devices on the mounting plate 1-2 are distributed on both sides of the mounting plate 1-2.

[0048] The exhaust device is fixed by the mounting plate 1-2, and the exhaust devices on the mounting plate 1-2 are distributed on both sides of the mounting plate 1-2, so that more exhaust devices can be installed in a limited space, thereby more flexibly selecting the actual piercing position and improving the waterproof performance of the part.

[0049] In addition, in some embodiments, bottom plates 1 of various sizes can be provided to adapt to the mold body 2 of more sizes of foaming parts. In some application schemes of large-size bottom plates 1, multiple mounting plates 1-2 can be provided, so that the exhaust devices can be distributed on different mounting plates 1-2 to achieve a greater distribution density.

Claims

1. A foaming mold, comprising an upper mold and a lower mold, wherein both the upper mold and the lower mold include a base plate (1) and a mold body (2) disposed on the base plate (1), wherein after the upper mold and the lower mold are closed, the inner sides of the two mold bodies are joined to form a cavity, characterized in that, It also includes one or more venting devices, all distributed on the upper and lower molds, with the same number of venting devices on the corresponding mold body (2), wherein the venting devices and the first through holes correspond one-to-one, wherein: The exhaust device includes: The cylinder module (3) is fixed on the corresponding base plate (1) and located on the outside of the mold body (2); The piercing needle (4) is fixed on the output end of the cylinder module (3). The straight line of its axis passes through the corresponding first through hole and does not intersect with the corresponding mold body (2). It is used to pass through the first through hole and be inserted into the cavity under the action of the cylinder module (3).

2. The foaming mold according to claim 1, characterized in that, The mold body (2) can be detachably fixed to the base plate (1).

3. A foaming mold according to claim 2, characterized in that, The mold body (2) is fixed to the base plate (1) by bolts.

4. A foaming mold according to claim 1, characterized in that, The axis of the piercing needle (4) and the center line of the first through hole are on a straight line.

5. A foaming mold according to claim 1, characterized in that, The axis of the puncture needle (4) and the axis of the output shaft of the cylinder module (3) are on a straight line.

6. A foaming mold according to claim 1, characterized in that, The cylinder module (3) includes a cylinder body and a solenoid valve. The solenoid valve is located in the air path of the cylinder body and connected to the host controller.

7. A foaming mold according to claim 6, characterized in that, The solenoid valve is a two-wire solenoid valve.

8. A foaming mold according to claim 1, characterized in that, The base plate (1) includes a base support (1-1) and a mounting plate (1-2) disposed on the base support, and the exhaust device is fixed on the mounting plate (1-2).

9. A foaming mold according to claim 8, characterized in that, The mounting plate (1-2) is parallel to the mold closing direction.

10. A foaming mold according to claim 8, characterized in that, The exhaust devices located on the mounting plate (1-2) are distributed on both sides of the mounting plate (1-2).

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