An enhanced integrated pipeline blow molding mold

Abstract

The utility model discloses an enhanced integrated pipeline blow molding mold, belonging to the field of mold technology. The mold comprises a first half mold and a second half mold. At least one of the first half mold and the second half mold is provided with a heating element. The heating element heats the side of the integrated pipeline blank after the first half mold and the second half mold are molded together to make them welded and connected. The first half mold is provided with a first molding groove and a first auxiliary groove, and the second half mold is provided with a second molding groove and a second auxiliary groove. A heating insert is arranged in the mold of the utility model. When the integrated pipeline is blow-molded, the side of the blank is heated and melted by the heating insert and then connected, so that the connection is faster; after the side of the blank is heated, it is welded and connected more firmly; after the heating insert is welded and connected to the blank, it can not only prevent the pipeline from cracking, but also the reinforcement strip formed after the welding connection can strengthen the overall strength of the integrated pipeline, and improve the temperature resistance, pressure resistance, durability and other properties of the integrated pipeline.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds, and in particular relates to an enhanced integrated pipeline blow molding mold. Background Art

[0002] At present, the automotive thermal management system piping, whether it is a traditional model, a hybrid model, or a new energy pure electric model, still uses traditional hose + clamp connection, nylon tube + quick plug connection, TPV pipeline connection and other forms. They are all designed with a single pipeline and interface connection, a single pipeline for processing and manufacturing, and a single pipeline installed and fixed to the body. For the increasingly compact interior layout requirements of new energy vehicles and the modular vehicle design trend of new energy vehicles, traditional pipelines are becoming increasingly difficult to adapt, often resulting in complex and redundant trend structure design, more inconvenience in loading and subsequent interference and other problems.

[0003] The integrated pipeline adopts a multi-channel pipeline one-piece molding design. This one-piece molding design has higher requirements on the temperature resistance, pressure resistance, durability and other properties of the integrated pipeline. However, the existing integrated pipeline is prone to cracking after cooling and molding due to the bonding between the blanks during blow molding, and the overall strength of the integrated pipeline is not high, which cannot meet the use requirements of the product in new energy vehicles. Utility Model Content

[0004] In view of the above problems existing in the prior art, the technical problem to be solved by the present invention is to provide an enhanced integrated pipeline blow molding mold to improve the overall strength of the integrated pipeline and meet the higher performance requirements of the integrated pipeline.

[0005] Technical solution: In order to solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0006] A reinforced integrated pipeline blow molding mold includes a first half mold and a second half mold for molding an integrated pipeline blank, at least one of the first half mold and the second half mold is provided with a heating element, and the heating element heats the side of the integrated pipeline blank after the first half mold and the second half mold are molded together to weld them together, the first half mold is provided with a first molding groove and a first auxiliary groove arranged on the side of the first molding groove, and the second half mold is provided with a second molding groove corresponding to the first molding groove and a second auxiliary groove corresponding to the first auxiliary groove.

[0007] Preferably, the heating element includes a first heating insert and a second heating insert, the first auxiliary groove is detachably connected to the first heating insert, the first heating insert is provided with a first strip groove, the second auxiliary groove is detachably connected to the second heating insert, the second heating insert is provided with a second strip groove, when the first half mold and the second half mold are closed, the first molding groove and the second molding groove constitute a molding cavity of the integrated pipeline, the side edges of the integrated pipeline blank are located in the first strip groove and the second strip groove, and the first heating insert and the second heating insert heat the side edges of the integrated pipeline blank to weld them together.

[0008] Preferably, the first molding groove includes more than one first pipeline groove, and the second molding groove includes more than one second pipeline groove.

[0009] Preferably, the first heating insert is connected to the first half-mold via a first bolt, and the second heating insert is connected to the second half-mold via a second bolt.

[0010] Preferably, the first half mold is provided with a first blow needle slot hole connected to the first molding groove, and the second half mold is provided with a second blow needle slot hole connected to the second molding groove, and the first blow needle slot hole and the second blow needle slot hole are used to accommodate blow needles for blow molding.

[0011] Preferably, a first heat insulating layer is provided on a side of the first heating insert, and a second heat insulating layer is provided on a side of the second heating insert.

[0012] Beneficial effects: Compared with the prior art, the utility model has the following advantages:

[0013] 1. A heating insert is set in the mold. When the integrated pipeline is blow-molded, the side of the blank is heated and melted by the heating insert and then connected, which makes the connection faster;

[0014] 2. The integrated pipeline made by the mold is blow-molded into multiple pipelines in one piece, which has a simple structure, reduces the risk of pipeline leakage, has low manufacturing cost, high integration, good assembly performance and convenient installation;

[0015] 3. After the side of the blank is heated, it is welded. Compared with the original bonding connection, the welding connection method is more solid, the pipeline is not easy to crack, and the integrated pipeline formed by mold blow molding can withstand a pressure of up to 2.0MPa;

[0016] 4. After the heating insert is welded to the blank, it can not only prevent the pipeline from cracking, but the reinforcement strip formed after the welding connection can also strengthen the overall strength of the integrated pipeline and improve the temperature resistance, pressure resistance, durability and other properties of the integrated pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is a schematic diagram of the integrated pipeline structure of Example 1 of the utility model;

[0018] Figure 2 is a schematic diagram of the top view of the integrated pipeline structure of Example 1;

[0019] Figure 3 1 is a schematic structural diagram of the mold in the mold closing state of Example 1;

[0020] Figure 4 is a schematic diagram of the mold structure of Example 1;

[0021] Figure 5 is a schematic diagram of the cross-sectional structure of the first half mold of Example 1;

[0022] Figure 6 is a schematic structural diagram of the first half mold portion of Example 1;

[0023] Figure 7 is a schematic structural diagram of the first heating insert of Example 1;

[0024] Figure 8 is a schematic diagram of the structure of the second heating insert in Example 1;

[0025] Fig. 9 is a schematic diagram of the cross-sectional structure of the first heating insert of Example 1;

[0026] Fig.10 1 is a schematic diagram of the structure of the mold before mold closing of Example 1;

[0027] Fig.11 is a three-dimensional structural diagram of the integrated pipeline of Example 2;

[0028] Fig.12 is a cross-sectional structural diagram of an integrated pipeline in Example 2;

[0029] Fig.13 is an exploded view of the mold of Example 2;

[0030] Fig.14 is a three-dimensional diagram of a first heating insert and a second heating insert of Example 2;

[0031] Fig.15 is a schematic diagram of the first half mold structure of Example 2;

[0032] Fig.16 is a schematic diagram of the second half mold structure of Example 2;

[0033] Fig.17 It is the mold appearance diagram of Example 2;

[0034] Fig.18 yes Fig.17 Section view along CC line. DETAILED DESCRIPTION

[0035] The present invention will be further explained below in conjunction with specific embodiments. The embodiments are implemented based on the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0036] Example 1

[0037] like Figure 1 and Figure 2 As shown, the enhanced integrated pipeline of this embodiment includes a main body 9 and a reinforcement strip 8. The main body 9 includes two main pipes 901, which are arranged side by side. The main pipes 901 are circular pipes. Two reinforcement strips 8 are symmetrically arranged and extend along the length direction of the main body 9. The two reinforcement strips 8 are connected to the two sides of the main body 9. The reinforcement strips 8 are rectangular strips. The main body 9 and the reinforcement strips 8 are blow-molded in one piece. The integrated pipeline material is PP, PP+GF, PA, PA+GF or HDPE.

[0038] like Figure 4 , Figure 5 , Figure 6 and Fig.10 As shown, the blow molding mold for manufacturing the enhanced integrated pipeline of the present embodiment provided in the present embodiment comprises a first half mold 1 and a second half mold 2. The first half mold 1 and the second half mold 2 are rectangular as a whole. The mold material is P20 mold steel. The mold is generally placed vertically for use. The first half mold 1 and the second half mold 2 are used to mold the integrated pipeline blank to form the enhanced integrated pipeline of the present embodiment. The integrated pipeline blank is a barrel-shaped blank (a sheet material divided into two pieces can also be used). The material is discharged by extrusion and pre-blown between the two half molds. The first half mold 1 is provided with a first molding groove 11 and a first auxiliary groove 13. The first molding groove 11 includes two first pipeline grooves. The second half mold 2 is provided with a second molding groove 21 and a second auxiliary groove 23. The second molding groove 21 includes two second pipeline grooves. The shape and position of the second molding groove 21 correspond to the first molding groove 11, and the shape and position of the second auxiliary groove 23 correspond to the first auxiliary groove 13. The first auxiliary groove 13 is arranged on both sides of the first molding groove 11, and the second auxiliary groove 23 is arranged on both sides of the second molding groove 21. When the first half mold 1 and the second half mold 2 are molded together, the first molding groove 11 and the second molding groove 21 form a molding cavity for the integrated pipeline. The barrel-shaped blank is slightly larger than the molding cavity. The mold cuts off the excess material on the side of the integrated pipeline blank. After the side is cut off, the blank is divided into a first blank 91 close to the first half mold 1 and a second blank 92 close to the second half mold 2. The first blank 91 and the second blank 92 form a main body 9 in the molding cavity. After the blank is formed, a main pipeline 901 is formed at the first pipeline groove and the second pipeline groove.

[0039] like Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Fig.10 As shown, the first auxiliary groove 13 includes at least two first sub-grooves of different shapes. In this embodiment, the first sub-groove includes a first short groove 131 and a first long groove 132. The first short groove 131 and the first long groove 132 are arranged at intervals. The heating element includes a first heating insert 3 and a second heating insert 4. The first heating insert 3 is detachably connected in the first auxiliary groove 13. The first half mold 1 is provided with a threaded hole at the position of the first auxiliary groove 13. The first through hole 32 is provided at the corresponding position on the first heating insert 3. The first bolt 14 penetrates the first through hole 32 and is threadedly connected with the threaded hole of the first half mold 1, so that the first heating insert 3 is connected to the first half mold 1 through the first bolt 14. The shape of the first heating insert 3 corresponds to the groove in which it is located. The first heating insert 3 is a short insert in the first short groove 131, and the first heating insert 3 is a long insert in the first long groove 132. The second auxiliary groove 23 corresponds to the first auxiliary groove 13, and the second auxiliary groove 23 includes at least two second sub-grooves with different shapes. In this embodiment, the second sub-groove includes a second short groove and a second long groove, and the second short groove and the second long groove are also spaced apart. The second heating insert 4 is detachably connected to the second auxiliary groove 23, and the second half mold 2 is provided with a threaded hole at the position of the second auxiliary groove 23. A second through hole 42 is provided at a corresponding position on the second heating insert 4. The first bolt 14 penetrates the second through hole 42 and is threadedly connected to the threaded hole of the second half mold 2, so that the second heating insert 4 is connected to the second half mold 2 through the second bolt 24. The shape of the second heating insert 4 corresponds to the groove in which it is located. The second heating insert 4 is a short insert in the second short groove, and the second heating insert 4 is a long insert in the second long groove. The first heating insert 3 is provided with a first strip groove 31, and the first strip groove 31 is arranged on one side of the outer side surface of the first heating insert 3. The second heating insert 4 is provided with a second strip groove 41, and the second strip groove 41 is arranged on the outer side surface of the second heating insert 4 and corresponds to the first strip groove 31. When the first half mold 1 and the second half mold 2 are molded together, the side edges of the first blank 91 and the second blank 92 are located in the first strip groove 31 and the second strip groove 41. The first heating insert 3 and the second heating insert 4 heat the side edges of the first blank 91 and the second blank 92, so that the side edges of the first blank 91 and the second blank 92 are welded and connected. The first heating insert 3 is provided with a first protruding strip 33, and the first protruding strip 33 is located on the outer side of the first strip groove 31. The second heating insert 4 is provided with a second protruding strip 43, and the second protruding strip 43 corresponds to the position of the first protruding strip 33. When the first half mold 1 and the second half mold 2 are closed, the first protruding strip 33 and the second protruding strip 43 shear off the excess material on the side of the blank, thereby dividing the integrated pipeline blank into a first blank 91 close to the first half mold 1 and a second blank 92 close to the second half mold 2.

[0040] like Figure 6As shown, the first half mold 1 is provided with a first blow needle slot hole 12 connected with the first molding groove 11, and the second half mold 2 is provided with a second blow needle slot hole connected with the second molding groove 21. The first blow needle slot hole 12 and the second blow needle slot hole are used to accommodate a blow needle 6 for blow molding. After the first half mold 1 and the second half mold 2 are molded together, the two blow needles 6 are respectively inserted into the corresponding pipeline grooves for blowing, so that the first blank 91 and the second blank 92 are attached to the inner wall of the mold.

[0041] like Figure 4 , Figure 7 , Figure 8 and Fig. 9 As shown, the first heating insert 3 is provided with a first insulation layer 51 on the side, and the first insulation layer 51 is arranged on both sides of the first heating insert 3. The second heating insert 4 is provided with a second insulation layer 52 on the side, and the second insulation layer 52 is arranged on both sides of the second heating insert 4. The insulation layer is used to prevent the temperature of the mold and the product body from being too high, which affects the product appearance and molding quality. The first heating insert 3 is provided with a first heating rod 301, and the second heating insert 4 is provided with a second heating rod. The first heating rod 301 and the second heating rod are electric heating rods, which are connected to an external circuit. After the electric heating rods are heated, the heat is transferred to the surface of the first strip groove 31 and the second strip groove 41, and the side of the blank is heated. The side of the first blank 91 and the second blank 92 are welded and connected. In this embodiment, the two heating inserts are made of beryllium copper, which has good thermal conductivity.

[0042] This embodiment also provides an enhanced integrated pipeline blow molding method, using the enhanced integrated pipeline blow molding mold, comprising the following steps:

[0043] S1, the discharge die of the blank continuously discharges the material to form a barrel-shaped integrated pipeline blank, the lower end of the integrated pipeline blank is pre-clamped to connect the lower end of the blank, and the integrated pipeline blank is placed between the first half mold 1 and the second half mold 2;

[0044] S2, the first half mold 1 and the second half mold 2 are molded together, the blow needle 6 is inserted into the integrated pipeline blank to blow air, the blank is fitted with the inner wall of the first molding groove 11 and the second molding groove 21, and the excess material on the side of the blank is cut off by the mold. After the cutting, the blank forms a first blank 91 and a second blank 92, and the sides of the first blank 91 and the second blank 92 enter the first strip groove 31 and the second strip groove 41;

[0045] S3, the first half mold 1 and the second half mold 2 heat the blank, the overall temperature of the mold is T1, T1≤80°C, in this embodiment T1=80°C, the first heating insert 3 and the second heating insert 4 heat the sides of the first blank 91 and the second blank 92 so that the sides are welded and connected to form a reinforcing strip 8, the heating temperature of the first heating insert 3 and the second heating insert 4 is T2, 130°C≤T≤320°C, in this embodiment T2=230°C;

[0046] S4, after the first blank 91 and the second blank 92 are cooled and formed, the first half mold 1 and the second half mold 2 are opened.

[0047] Example 2

[0048] like Fig.11 and Fig.12 As shown, the enhanced integrated pipeline of this embodiment includes a main body 9 and a reinforcement strip 8. The difference from Example 1 is that the main body 9 includes three main pipes 901, and the three main pipes 901 are arranged side by side and the main pipes 901 have two bends. The length of one main pipe 901 on the side is shorter than the other two main pipes 901. The reinforcement strip 8 is arranged on the outer side of the main body 9 and is bent integrally with the main pipe 901. The reinforcement strip 8 is a rectangular strip, and the main body 9 and the reinforcement strip 8 are blow-molded as a whole.

[0049] like Fig.13 , Fig.15 , Fig.16 , Fig.17 and Fig.18 As shown, the blow molding mold for manufacturing the enhanced integrated pipeline of the present embodiment provided in the present embodiment comprises a first half mold 1 and a second half mold 2, the first half mold 1 is provided with a first molding groove 11 and a first auxiliary groove 13, the second half mold 2 is provided with a second molding groove 21 and a second auxiliary groove 23, and the difference from the first embodiment is that the first molding groove 11 comprises three first pipeline grooves, the second molding groove 21 comprises three second pipeline grooves, and the pipeline grooves are bent, so that the molding cavity formed by the combination of the first molding groove 11 and the second molding groove 21 corresponds to the shape of the main body 9 of the integrated pipeline of the present embodiment. The first auxiliary groove 13 is arranged on the side of the first molding groove 11, and the second auxiliary groove 23 is arranged on the side of the second molding groove 21, and the difference from the first embodiment is that the first auxiliary groove 13 comprises ten first sub-grooves of different shapes, the first sub-grooves are arranged along the direction of the first molding groove 11, and the second auxiliary groove 23 comprises ten second sub-grooves of different shapes, the second sub-grooves are arranged along the direction of the second molding groove 21 and the positions correspond to the first sub-grooves one by one. The first half mold 1 is provided with a first blow needle slot hole 12 connected to the first molding groove 11, and the second half mold 2 is provided with a second blow needle slot hole 22 connected to the second molding groove 21. During blow molding, the blow needle is inserted from the first blow needle slot hole 12 and the second blow needle slot hole 22 and blows air, and the air is divided into three paths through the internal channel and enters the pipeline respectively.

[0050] like Fig.13 , Fig.14 , Fig.15 , Fig.16 and Fig.18As shown, a first heating insert 3 is detachably connected in the first auxiliary groove 13, and the first heating insert 3 in each first sub-groove corresponds to the shape of the first sub-groove in which it is located, and the first heating insert 3 is also connected to the first half mold 1 through a first bolt 14, and a second heating insert 4 is detachably connected in the second auxiliary groove 23, and the second heating insert 4 in each second sub-groove corresponds to the shape of the second sub-groove in which it is located, and the second heating insert 4 is also connected to the second half mold 2 through a second bolt 24. A first heat insulating layer 51 is provided on the side of the first heating insert 3, and the first heat insulating layer 51 is arranged on the side of the first heating insert 3 and connected to the first heating insert 3 through bolts, and a second heat insulating layer is provided on the side of the second heating insert 4. A first heating rod 301 is provided in the first heating insert 3, and a second heating rod is provided in the second heating insert 4. A first strip groove 31 is provided on the first heating insert 3, and a second strip groove 41 is provided on the second heating insert 4. When the first half mold 1 and the second half mold 2 are closed, excess material on the side of the integrated pipeline blank is cut off by the first heating insert 3 and the second heating insert 4, and the side of the blank after the excess material is cut off is located in the first strip groove 31 and the second strip groove 41. The heating rods in the first heating insert 3 and the second heating insert 4 work, and the first strip groove 31 and the second strip groove 41 generate heat to heat the side of the blank, so that the side of the blank is welded and connected to form the reinforcing strip 8 of this embodiment.

[0051] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An enhanced integrated pipeline blow molding mold, characterized in that: The invention comprises a first half mold (1) and a second half mold (2) for molding an integrated pipeline blank, wherein at least one of the first half mold (1) and the second half mold (2) is provided with a heating element, and the heating element heats the side of the integrated pipeline blank after the first half mold (1) and the second half mold (2) are molded together to weld the side of the integrated pipeline blank, wherein the first half mold (1) is provided with a first molding groove (11) and a first auxiliary groove (13) arranged on the side of the first molding groove (11), and the second half mold (2) is provided with a second molding groove (21) corresponding to the first molding groove (11) and a second auxiliary groove (23) corresponding to the first auxiliary groove (13).

2. The enhanced integrated pipeline blow molding mold according to claim 1, characterized in that: The heating element comprises a first heating insert (3) and a second heating insert (4); the first auxiliary groove (13) is detachably connected with the first heating insert (3); the first heating insert (3) is provided with a first strip groove (31); the second auxiliary groove (23) is detachably connected with the second heating insert (4); the second heating insert (4) is provided with a second strip groove (41); when the first half mold (1) and the second half mold (2) are molded together, the first molding groove (11) and the second molding groove (21) form a molding cavity of the integrated pipeline; the side edge of the integrated pipeline blank is located in the first strip groove (31) and the second strip groove (41); the first heating insert (3) and the second heating insert (4) heat the side edge of the integrated pipeline blank to weld and connect them.

3. The enhanced integrated pipeline blow molding mold according to claim 2, characterized in that: The first molding groove (11) includes more than one first pipeline groove, and the second molding groove (21) includes more than one second pipeline groove.

4. The enhanced integrated pipeline blow molding mold according to claim 2, characterized in that: The first heating insert (3) is connected to the first half mold (1) via a first bolt (14), and the second heating insert (4) is connected to the second half mold (2) via a second bolt (24).

5. The enhanced integrated pipeline blow molding mold according to claim 2, characterized in that: The first half mold (1) is provided with a first blow needle slot hole (12) connected to the first molding groove (11), and the second half mold (2) is provided with a second blow needle slot hole (22) connected to the second molding groove (21), and the first blow needle slot hole (12) and the second blow needle slot hole (22) are used to accommodate a blow needle (6) for blow molding.

6. The enhanced integrated pipeline blow molding mold according to claim 2, characterized in that: A first heat insulating layer (51) is provided on the side of the first heating insert (3), and a second heat insulating layer (52) is provided on the side of the second heating insert (4).

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