CN216359725U

CN216359725U - Foaming mold lower die and foaming mold

Info

Publication number: CN216359725U
Application number: CN202122744212.9U
Authority: CN
Inventors: 张蕾; 屈万峰; 巩凤龙
Original assignee: Zhengzhou Yucheng Mould Co ltd
Current assignee: Zhengzhou Yucheng Mould Co ltd
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-04-22
Anticipated expiration: 2031-11-10

Abstract

The utility model belongs to the field of moulds, and particularly relates to a lower mould of a foaming mould and the foaming mould, wherein the foaming mould comprises an upper mould and a lower mould which are closed to enclose a forming cavity, the lower die comprises a forming wall, the forming wall is provided with a forming surface which is matched with the corresponding part of the product to be formed in shape and is used for laying the fabric, the lower die of the foaming die also comprises a solid supporting structure, the solid supporting structure is positioned on one side of the forming wall, which is back to the forming surface, and is provided with a supporting surface matched with the back surface of the forming wall, which is back to the forming surface, the supporting surface is matched with the part of the forming wall, which is supported, a negative pressure suction pipeline is arranged in the forming wall, the forming wall is also provided with an air suction hole for communicating the negative pressure suction pipeline with the forming surface, the foaming mold can meet the requirements of higher structural strength and capability of carrying out vacuum adsorption on the surface fabric laid on the molding surface, and has lower manufacturing cost.

Description

Foaming mold lower die and foaming mold

Technical Field

The utility model belongs to the field of molds, and particularly relates to a lower mold of a foaming mold and the foaming mold.

Background

Most of the interior parts of the vehicle are made of polyurethane rigid foam materials, and are specifically manufactured in a foaming mold through foaming and molding of the polyurethane rigid foam materials. In order to improve the aesthetic property of the interior trim part, lines are designed on the interior trim part, and aiming at the interior trim part, the production method comprises the following steps: and paving the fabric with the lines in the mold cavity of the foaming mold, and then injecting the polyurethane rigid foam material into the mold cavity for foaming and molding.

At present, foaming molds are mainly divided into two types from the material aspect, one type is a foaming aluminum film, the other type is a composite material foaming mold (a cavity is mainly formed by pasting glass fibers as a base through resin), and no matter which type of mold is provided with a corresponding vacuumizing system, so that a fabric can be tightly attached to a forming surface, and the appearance and the size quality of a product are ensured. Wherein, the structural configuration of the foaming aluminum film is as disclosed in the Chinese utility model patent with the authorization publication number of CN207190127U and the authorization publication date of 2018, 04 and 06. The lower die of the composite material foaming die is similar to the forming die of a formed part disclosed by Chinese invention patent with application publication number CN106626190A and application publication date 2017, 05 and 10, and is provided with a forming surface and an internal cavity, wherein the internal cavity is communicated with the forming surface through a through hole, when the composite material foaming die is used, the fabric is tightly attached to the forming surface by vacuumizing the internal cavity, and the difference is that the lower die of the composite material foaming die is matched with the corresponding upper die to form a die cavity in a surrounding mode. The foaming aluminum film and the composite material foaming mold have the advantages and the disadvantages respectively, wherein the foaming aluminum mold has the advantages of high dimensional precision, long service life and strong stability of batch products, but compared with the composite material foaming mold, the foaming aluminum mold has the disadvantages of high manufacturing cost (5-10 times of the composite material foaming mold), long manufacturing period (3-4 times of the composite material foaming mold), and difficult change of a designed structure, and the composite material foaming mold has the disadvantages of low structural strength and poor stability of batch products.

Although each has advantages and disadvantages, the foamed aluminum film and the composite material foaming mold can well meet the production of small-size parts, but for large-size parts such as a long air duct of a luggage rack of a passenger car, the corresponding foaming mold has a large size and needs to have enough strength and rigidity to meet the pressure of nearly 70 tons in the mold opening direction, if the traditional foamed aluminum mold is adopted, the mold manufacturing cost is extremely high, and if the traditional composite material foaming mold is adopted, the requirements on the strength and the rigidity cannot be met, so that the foaming mold which has high structural strength, can perform vacuum adsorption on the fabric and has low manufacturing cost is needed to meet the requirements for producing and manufacturing large-size parts.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a lower die of a foaming die, which aims to solve the technical problems that the foaming die in the prior art cannot meet the requirements of high structural strength, capability of vacuumizing and adsorbing a skin fabric laid on a forming surface and low body manufacturing cost; the utility model also aims to provide a foaming mold using the lower mold of the foaming mold.

In order to achieve the purpose, the technical scheme of the lower die of the foaming die provided by the utility model is as follows:

the lower die of the foaming die comprises a forming wall, wherein the forming wall is provided with a forming surface which is matched with the corresponding part of a product to be formed in shape and used for laying a fabric, the lower die of the foaming die further comprises a solid supporting structure, the solid supporting structure is positioned on one side, back to the forming surface, of the forming wall and provided with a supporting surface matched with the back, back to the forming surface, of the forming wall, the supporting surface is matched with the part, supported by the forming wall, a negative pressure suction pipeline is arranged in the forming wall, and the forming wall is further provided with an air suction hole for communicating the negative pressure suction pipeline with the forming surface.

The beneficial effects are that: the solid supporting structure is arranged on one side of the forming wall, which is opposite to the forming surface, the foaming mould has high structural strength on the whole based on the support of the solid supporting structure, and further the lower mould of the foaming mould can bear larger pressure, meanwhile, the negative pressure suction pipeline is arranged in the forming wall, and the communication between the negative pressure suction pipeline and the forming surface is realized through the air suction hole, the technical problem that the negative pressure suction pipeline communicated with the forming surface is not easy to form in the lower mould of the foaming mould under the condition of the solid supporting structure is solved, the lower mould of the foaming mould has higher structural strength, and simultaneously, the vacuum-pumping structure capable of performing vacuum-pumping adsorption on the surface fabric laid on the forming surface is provided, the negative pressure suction passage is composed of the negative pressure suction pipeline and the air suction hole which are arranged in the forming wall, on the premise of meeting the requirements, the cross section of the negative pressure suction pipeline can be set as small as possible, and can realize the concentrated setting of negative pressure suction opening on the profiled surface, when improving foaming mould negative pressure suction rate, can realize more reliable negative pressure suction effect through concentrating the negative pressure of taking out, when specifically making, the profiled wall can not consider its intensity too much, choose for use low-cost material manufacturing, likewise, solid bearing structure just has high intensity structurally, and its material selection scope can be wider, also can select to have suitable hardness and low price material concurrently.

As a further improvement, the forming surface is provided with a reentrant corner structure, and the air suction hole communicates the bottom of the reentrant corner structure with the negative pressure suction pipeline.

The beneficial effects are that: set up the reentrant corner structure and make the foaming mould who uses this foaming mould lower mould can be used for the shaping to have the product of arch or recess, because the surface fabric is difficult for laminating completely with the bottom of reentrant corner structure, through bleeder vent with the bottom and the negative pressure suction channel intercommunication of reentrant corner structure, can overcome the surface fabric and be difficult for the technical problem with the laminating of reentrant corner structure bottom to the bottom negative pressure of mainly taking out of reentrant corner structure.

As a further improvement, the lower foaming mold die is provided with a plurality of negative pressure suction pipelines arranged in parallel, and the lower foaming mold die also comprises a gathering pipeline which communicates the same ends of the negative pressure suction pipelines.

The beneficial effects are that: set up many negative pressure suction pipes for have more negative pressure suction openings on the shaping face, make the foaming mould that uses this foaming mould lower mould have higher negative pressure suction speed, meanwhile, can focus on to more positions and take out the negative pressure, improve the negative pressure suction effect of the foaming mould that uses this foaming mould lower mould.

As a further improvement, the forming wall comprises a surface layer, a reinforcing layer and a heat preservation layer which are sequentially arranged, the forming surface is formed by the surface of the surface layer, and the negative pressure suction pipeline is arranged between the reinforcing layer and the heat preservation layer.

The beneficial effects are that: set up enhancement layer and heat preservation in top layer downside for when the shaping wall has higher structural strength, still have good heat preservation effect. In addition, the negative pressure suction pipeline is arranged between the reinforcing layer and the heat insulation layer, and the reinforcing layer is reinforced in an auxiliary mode through the negative pressure suction pipeline, so that the structural strength of the forming wall is further improved.

As a further improvement, the solid supporting structure comprises a supporting box, the supporting box and the forming wall enclose a filling cavity, and the solid supporting structure further comprises a solid supporting block formed in the filling cavity in a curing mode.

The beneficial effects are that: solid supporting block comes to support the shaping wall through material curing molding for solid bearing structure self has higher structural strength, and meanwhile, based on such structure, when making foaming mold lower mould, can be in the material of the solid supporting block of support intracavity casting molding after enclosing out the support cavity, make the holding surface of solid supporting block can coincide with the back of shaping wall completely, thereby realize the more reliable support to the shaping wall.

As a further improvement, the filling cavity is internally provided with a reinforcing support which is fixed relative to the support box, so that the reinforcing support and the solid support block can be solidified together to reinforce the structure of the solid support block.

The beneficial effects are that: the reinforcing support is utilized to form a framework in the solid supporting structure, so that the solid supporting structure has higher structural strength.

As a further improvement, at least part of the reinforcing support is positioned at the transition fit of the forming wall and the solid supporting block so as to support the forming wall.

The beneficial effects are that: set up to strengthen and prop and support the shaping wall, avoid the shaping wall to warp, meanwhile, strengthen and prop and form skeleton texture in solid bearing structure, when improving the holistic structural strength of foaming mold lower mould, avoid the stress that produces when the solidification forms solid supporting shoe to cause the influence to the shape and the precision of shaping wall.

As a further improvement, the opening shape of the supporting box is matched with the shape of the forming wall.

The beneficial effects are that: the opening of the supporting box is matched with the forming wall, the opening of the supporting box is tightly plugged by the forming wall, so that gaps and gaps of materials which are easy to leak in a forming cavity are avoided, and the lower die of the foaming die is convenient to produce and manufacture.

As a further improvement, the support box is a steel box formed by splicing steel plates, and a special vacuumizing joint connected with the negative pressure suction pipeline is welded and fixed on the support box.

The beneficial effects are that: the supporting box adopts the steel structure, when guaranteeing that foaming mold lower mould has reliable structural strength, the supporting box provides the installation base member as the special joint of evacuation, need not to connect extra design and set up mounting structure to the special joint of evacuation for when foaming mold lower mould has as simple structure as possible, still be convenient for manufacture.

In order to achieve the purpose, the technical scheme of the foaming mold provided by the utility model is as follows:

the lower die comprises a forming wall, the forming wall is provided with a forming surface which is matched with the corresponding part of a product to be formed in shape and used for laying fabric, the solid supporting structure is positioned on one side of the forming wall, facing away from the forming surface, and is provided with a supporting surface matched with the back of the forming wall, the supporting surface is matched with the part of the forming wall, a negative pressure suction pipeline is arranged in the forming wall, and the forming wall is provided with an air suction hole for communicating the negative pressure suction pipeline with the forming surface.

The beneficial effects are that: set up solid bearing structure in one side of shaping wall shaping face dorsad, support based on solid bearing structure makes the foaming mould have high structural strength on the whole, and then make the foaming mould lower mould can bear bigger pressure, meanwhile, negative pressure suction pipeline has in the shaping wall, and realize the intercommunication between negative pressure suction pipeline and the shaping face through the aspirating hole, the technical problem of the negative pressure suction pipeline that is difficult for in the mould shaping play and shaping face intercommunication under the foaming mould under the circumstances that has solid bearing structure has been overcome, when making the foaming mould lower mould have higher structural strength, have and to carry out evacuation adsorbed evacuation structure to the epidermis surface fabric of laying on the shaping face. And, the negative pressure suction passage is formed by negative pressure suction pipeline and aspirating hole that set up in the profiled wall, on the premise of satisfying the requirement, can set up as little as possible with the cross section of negative pressure suction pipeline, and can realize the concentrated setting of negative pressure suction port on the profiled surface, when improving foaming mould negative pressure suction rate, can realize more reliable negative pressure suction effect through concentrating the negative pressure of taking out, when specifically making, the profiled wall can not consider its intensity too much, choose for use low-cost material to make, likewise, solid bearing structure just has high intensity structurally, its material selection scope can be wider, also can select to have suitable hardness and low price's material concurrently.

The beneficial effects are that: set up the reentrant corner structure and make the foaming mould can be used for the shaping to have the product of arch or recess, because the surface fabric is difficult for laminating completely with the bottom of reentrant corner structure, through the aspirating hole with the bottom and the negative pressure suction channel intercommunication of reentrant corner structure, can overcome the surface fabric and be difficult for the technical problem with the laminating of reentrant corner structure bottom to the bottom negative pressure of mainly taking out of reentrant corner structure.

The beneficial effects are that: set up many negative pressure suction pipes for have more negative pressure suction mouth on the shaping face, make the foaming mould have higher negative pressure suction speed, meanwhile, can focus on to more positions and take out the negative pressure, improve the negative pressure suction effect of foaming mould.

The beneficial effects are that: set up enhancement layer and heat preservation at the top layer downside for when the shaping wall has higher structural strength, still have good heat preservation effect, in addition, set up negative pressure suction pipe between enhancement layer and heat preservation, utilize negative pressure suction pipe to assist the enhancement to the enhancement layer, further improve the structural strength of shaping wall self.

Drawings

FIG. 1 is a cross-sectional view perpendicular to the longitudinal direction of a foaming mold in example 1 of the present invention;

FIG. 2 is a cross-sectional view of a lower mold perpendicular to a longitudinal direction of a foaming mold in example 1 of the present invention;

FIG. 3 is an enlarged partial view of the left inside corner structure of FIG. 2;

FIG. 4 is an enlarged partial view of the location of the reentrant corner structure of FIG. 2;

FIG. 5 is a schematic diagram of the piping layout of the vacuum piping system and the mold temperature control system in embodiment 1 of the foaming mold of the present invention;

fig. 6 is a schematic structural view of a foaming mold of embodiment 1 of the present invention installed on a corresponding mold base;

fig. 7 is a schematic structural view of a foaming mold of embodiment 2 of the present invention installed on a corresponding mold base;

description of reference numerals:

1. an upper die; 2. a lower die; 3. a mold cavity; 4. a forming wall; 5. molding surface; 6. a reentrant corner structure; 7. a negative pressure suction line; 8. an air exhaust hole; 9. a converging pipeline; 10. controlling the temperature; 11. a collector pipe; 12. a support box; 13. a solid support block; 14. channel steel; 15. a die holder; 16. a bolt and nut assembly; 17. briquetting; 18. an upper die; 19. a lower die; 20. and a cushion block.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, which may be present, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, elements recited by the phrases "comprising an … …," or the like, do not exclude the presence of such elements, processes, or methods.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or a non-detachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.

The present invention will be described in further detail with reference to the following embodiments, in which the foamed product is a long air duct of a passenger car luggage rack, and the structure and the operation of the foaming mold of the present invention are described to illustrate the core innovation point of the foaming mold of the present invention.

Specific example 1 of the foaming mold provided by the present invention:

as shown in fig. 1, the foaming mold includes an upper mold 1 and a lower mold 2, and the upper mold 1 and the lower mold 2 are closed to define a mold cavity 3.

The structure of the lower mold 2 is shown in fig. 2, and includes a molding wall 4 and a solid support structure 5. In this embodiment, the molding wall 4 is formed by pasting resin-impregnated glass fibers according to a processed master model, and the manufactured molding wall 4 has a molding surface 5 that is matched with a corresponding portion of the long air duct product of the luggage rack. Specifically, when the molding wall 4 is manufactured, the surface layer is pasted once by using the resin to soak the glass fiber, the reinforcing layer is pasted once again, and the heat insulation layer is pasted again.

Because the designed surface of the long air duct product of the luggage rack has grains, when the long air duct product of the luggage rack is produced, a fabric with corresponding grains needs to be laid in a mold cavity of a foaming mold, in order to enable the fabric to be completely attached to a forming surface 5 of a forming wall 4, as shown in fig. 2, a negative pressure suction pipeline 7 is arranged in the forming wall 4, and the negative angle structure 6 has larger curvature and is the position where the fabric is most difficult to be attached to the forming surface 5, therefore, in the embodiment, the negative pressure suction pipeline 7 is arranged corresponding to the negative angle structure, specifically, the forming surface 5 has four negative angle structures 6 in the width direction of the lower mold 2, and the middle two positions are spaced, therefore, three negative pressure suction pipelines 7 are arranged in the closer wall 4 in parallel, the axial extension direction of each negative pressure suction pipeline 7 is consistent with the length extension of the lower mold 2, one negative pressure suction pipeline 7 is aligned with the negative angle structure 6 at the leftmost position of the forming surface 5, a negative pressure suction pipeline 7 is aligned with the inside corner structure 6 at the rightmost side of the forming surface 5, and a negative pressure suction pipeline 7 is positioned in the middle of the inside corner structure 6 at two positions in the middle of the forming surface 5, namely is aligned with the inside corner structures 6 at the two positions simultaneously, so as to adsorb the facing material, as shown in fig. 3 and 4, the forming wall 4 is provided with an air suction hole 8 to communicate each negative pressure suction pipeline 7 with the lowest position of the corresponding inside corner structure 6.

In other embodiments, the number of the negative pressure suction pipes can be adaptively increased or decreased in combination with the actual structure of the mold, and may be more than three, or less than three, or even only one. The negative pressure suction line may not be a straight pipe, and may have an S-shape, a disk shape, or the like.

As shown in fig. 5, in order to communicate the same end of each negative pressure suction pipeline 7, the foaming mold further includes two converging pipelines 9, in this embodiment, one converging pipeline 9 communicates and converges the front end of each negative pressure suction pipeline 7, and the other converging pipeline 9 communicates and converges the rear end of each negative pressure suction pipeline 7. The joints of the converging pipelines 9 and the negative pressure suction pipeline 7 are sealed by using glass fiber reinforced plastic putty, and then the end parts of the converging pipelines 9 are connected with special vacuum-pumping joints. Regarding the specific location of the negative pressure suction line 7, in this embodiment, the negative pressure suction line 7 is disposed between the reinforcing layer and the insulating layer of the forming wall 4. In this embodiment, the negative pressure suction pipeline 7 is a PVC aluminum plastic pipe.

In addition to the vacuum pipeline system, the molding wall 4 is provided with a mold temperature control system for controlling the temperature in the mold cavity 3, and specifically, as shown in fig. 2 and 5, the mold temperature control system comprises temperature control pipes 10 arranged in parallel with the negative pressure suction pipeline 7, and further comprises a collecting pipe 11 for collecting and communicating the same ends of the temperature control pipes 10. The number of the collecting pipes 11 is two, wherein one collecting pipe 11 is a temperature control fluid inflow pipe, and the other collecting pipe is a temperature control fluid outflow pipe. When the temperature control device works, fluid enters the temperature control pipe through the temperature control fluid inflow pipe, exchanges heat with surrounding structures and then flows out through the temperature control fluid outflow pipe.

Because the lower die 2 needs to be capable of bearing 70 tons of pressure in the die assembly direction for producing the long air duct of the luggage rack, in order to ensure that the lower die 2 has sufficient structural strength and rigidity, the lower die 2 also has a solid supporting structure for supporting the forming wall 4, in the embodiment, the solid supporting structure comprises a supporting box 12 and a solid supporting block 13, the supporting box 12 is formed by welding steel plates, the upper end opening of the supporting box is matched with the shape of the forming wall 4, the supporting box 12 and the forming wall 4 enclose a filling cavity, and the solid supporting block 13 is formed by solidifying cement filled in the filling cavity. The upper end faces of the solid support blocks 13 and the support boxes 12 constitute support faces so that the support faces coincide with the portions of the forming wall 4 which are supported. In order to ensure that the solid supporting block 13 has a sufficiently high strength, in this embodiment, a reinforcing brace (not shown in the drawings) for reinforcing the structural strength of the solid supporting block 13 is disposed in the filling cavity, specifically, in this embodiment, a reinforcing section of the reinforcing brace fixed relative to the supporting box 12 is solidified with the cement filled in the filling cavity, so as to reinforce the structure of the solid supporting block 13, and in addition, a part of the reinforcing brace is located at the transition fit position of the forming wall 4 and the solid supporting block 13, so that the forming wall 4 can be supported by the reinforcing brace before the cement is poured, and deformation of the forming wall 4 caused by stress generated in the cement curing process is avoided. In this embodiment, as shown in fig. 2, the cross section of the back surface of the molding wall 4 facing away from the molding surface is corrugated, so that the molding wall 4 and the solid supporting block 13 can be better cured and combined. Based on the steel structure of the support box 12, in this embodiment, the special evacuation joints connected to the respective manifold pipes 11 are all welded and fixed to the support box 12.

As shown in fig. 6, the lower die 2 is to be fixed on the die holder 15 when in use, therefore, a fixed matching structure matched with the fixed structure on the die holder 15 is provided on the solid supporting structure, in this embodiment, the fixed structure on the die holder 15 is a pressing block 17 installed on the die holder 15 through a bolt and nut assembly 16, correspondingly, the fixed matching structure is a channel steel 14 fixed on the supporting box, the channel steel 14 is specifically arranged at one end of the solid supporting structure far away from the forming wall 4, so that the channel steel can be conveniently matched with the pressing block 17, and the installation of the lower die 2 on the die holder 15 is realized through the inner wall surface of a lower folded edge of the pressing block 17 pressing the channel steel 14. During installation, a cushion block 20 is arranged between the pressing block 17 and the channel steel 14. In other embodiments, the fixing structure on the die holder may also be a screw fixed on the die holder 15, and correspondingly, the fixing structure is a fixing plate fixed on the solid support structure, a through hole matched with the screw is formed in the fixing plate, during fixing, the screw penetrates upwards through the through hole, and a nut is screwed on the extending end of the screw to fix the lower die on the die holder.

The structure of the upper die 1 is similar to that of the lower die 2, except that the forming surface of the upper die 1 is not required to be adsorbed with fabric, and therefore, a vacuum pipeline system is not arranged in the upper die 1. Meanwhile, the mold temperature control system arranged in the lower mold 2 can meet the control of the mold cavity temperature, and the upper mold 1 is not provided with the mold temperature control system. In other embodiments, a vacuum piping system and a mold temperature control system may also be provided in the upper mold, depending on the shape of the product to be produced.

The foaming mould with the structure comprises the forming wall 4 and the solid supporting structure, the requirement on the structural strength of the forming wall 4 is greatly reduced based on the support of the solid supporting structure, the forming wall 4 can be manufactured by selecting materials and processes with the lowest cost as possible, and the solid supporting structure is structurally independent from the forming wall and is not influenced by the solid supporting structure when the forming wall is manufactured. For the solid support block, in other embodiments, the solid support block may be any material that can have a suitable hardness after curing, which is selected according to the manufacturing cost of the foaming mold. Simultaneously, based on above-mentioned design, the shaping wall can also choose metal material such as aluminum alloy, steel for use, compares in the foaming mould wholly, and the shaping wall volume is less relatively, and on the basis that solid bearing structure selected low-cost material preparation, the shaping wall selected metal material such as aluminum alloy, steel can not lead to the promotion of foaming mould overall cost by a wide margin.

In the embodiment 2 of the foaming mold provided by the utility model, as shown in fig. 7, the foaming mold comprises an upper mold 18 and a lower mold 19, and unlike the embodiment 1, the foaming mold has a different profile from that of the foaming mold in the embodiment 1, and is used for molding a product having a different shape from that of the long air duct of the luggage rack in the embodiment 1, and like the foaming mold in the embodiment 1, the foaming mold is fixed on the mold base 15 through the cooperation of the channel steel 14 fixed on the side wall of the solid support structure and the pressing block 17 on the mold base 15.

The specific embodiment 3 of the foaming mold provided by the utility model is mainly different from the embodiment 1 in that: in the embodiment 1, the lower die has the reentrant corner structure on the molding surface, so that the foaming die can be used for producing products with protrusions or grooves.

The specific embodiment 4 of the foaming mold provided by the utility model is mainly different from the embodiment 1 in that: in embodiment 1, the gathering pipeline is arranged to communicate and gather the end portions of the negative pressure suction pipelines arranged in parallel, in this embodiment, the gathering pipeline is not arranged any more, and the end portion of each negative pressure suction pipeline is connected with a special vacuum-pumping joint.

The specific embodiment 5 of the foaming mold provided by the utility model is mainly different from the embodiment 1 in that: in example 1, the molding wall is a resin-impregnated glass fiber reinforced plastic composite material, and in this example, the molding wall is a wood substitute material.

The specific embodiment 6 of the foaming mold provided by the utility model is mainly different from the embodiment 1 in that: in example 1, the solid support structure comprises a support box and a solid support block which is formed in the support box through curing. In this embodiment, the solid support structure is a block of cement or other solid block material.

In the embodiment of the lower mold of the foaming mold, the structure of the lower mold of the foaming mold is the same as that of the lower mold in any one of the embodiments 1 to 5 of the foaming mold, and the details are not repeated herein.

Finally, it should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and equivalents can be made in the technical solutions described in the foregoing embodiments without inventive effort, or some technical features of the present invention may be substituted with equivalents. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The lower die of the foaming die comprises a forming wall (4), wherein the forming wall (4) is provided with a forming surface (5) which is matched with the corresponding part of a product to be formed in shape and used for laying a fabric, the lower die of the foaming die is characterized by further comprising a solid supporting structure, the solid supporting structure is positioned on one side, back to the forming surface (5), of the forming wall (4) and is provided with a supporting surface matched with the back, back to the forming surface (5), of the forming wall (4), the supporting surface is matched with the part, supported by the forming wall (4), a negative pressure suction pipeline is arranged in the forming wall (4), and the forming wall (4) is further provided with an air suction hole (8) for communicating the negative pressure suction pipeline with the forming surface (5).

2. Lower foaming mould according to claim 1, wherein the forming surface (5) has an internal corner structure (6) and the suction holes (8) communicate the bottom of the internal corner structure (6) with a suction line of negative pressure.

3. Lower foaming die according to claim 1 or 2, wherein it has a plurality of juxtaposed negative pressure suction ducts, and wherein it further comprises a converging duct (9) communicating the same ends of the respective negative pressure suction ducts.

4. Lower mould according to claim 3, characterised in that said forming wall (4) comprises, in succession, a surface layer, a reinforcing layer and an insulating layer, said forming surface (5) being constituted by the surface of the surface layer, said suction duct being arranged between the reinforcing layer and the insulating layer.

5. Lower mould according to claim 1 or 2, wherein the solid support structure comprises a support box (12), the support box (12) and the forming wall (4) enclosing a filling cavity, and the solid support structure further comprises a solid support block (13) solidified in the filling cavity.

6. Lower foaming die according to claim 5, wherein the filling cavity is provided with a reinforcing support fixed relative to the support box (12) so that the reinforcing support can be solidified with the solid support block (13) to reinforce the structure of the solid support block (13).

7. Lower mould according to claim 6, characterised in that at least some of the reinforcing struts are located at the transition between the profiled wall (4) and the solid support block (13) for supporting the profiled wall (4).

8. Lower mould according to claim 5, characterised in that the opening of the support box (12) is shaped to match the shape of the forming wall (4).

9. Lower mould of a foaming mould according to claim 5, wherein the support box (12) is a steel box spliced by steel plates, and a special vacuumizing joint connected with the negative pressure suction pipeline (7) is welded and fixed on the support box (12).

10. A foaming mould comprising an upper mould (1) and a lower mould (2) which enclose a forming cavity, characterized in that the lower mould (2) is a lower mould (2) of a foaming mould according to any one of claims 1-9.