Mold for injection molding of car lamp mask

Abstract

The utility model discloses a mould for the injection moulding of car lamp mask, including support subassembly, lower mould, upper mould, upper end cover, runner, lower mould with support subassembly fixed, on the lower mould is provided with first cavity, on the upper mould is provided with second cavity, upper end cover with upper mould fixed, on the upper mould is provided with mounting part, said runner with the mounting part on the upper mould combines, on the upper mould is provided with second cavity. After the upper die and the lower die are combined, the first cavity and the second cavity are combined to form a die cavity, a notch is formed in the lower die, a notch communicated with the notch is formed in the corner of the first cavity, the die further comprises an insert assembly, the insert assembly is matched with the notch and the notch, and after the upper die and the lower die are combined, the insert assembly is matched with the notch. A forming cavity used for forming the support is formed between the insert assembly and the notch and between the lower die and the upper die. According to the utility model, the manufacturing difficulty and cost of the die can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of car lamp, concretely relates to a mould for injection molding car lamp mask. BACKGROUND

[0002] The car lamp mask is usually called "headlamp cover" or "headlight cover", and its main function is to protect the car lamp from the influence of external environment such as rain, dust, splashing stones, etc., and also can improve the lighting effect, so that the light is more uniform and concentrated on the front road, and the driving safety is improved.

[0003] The material of the car lamp mask mainly has two kinds: PC material and glass material. The PC material has excellent light transmission performance, easy forming, corrosion resistance, good impact resistance and the like, but is easy to yellow. If the ultraviolet protection film is regularly maintained and replaced, the defect can be avoided. The glass material has good light transmission, high temperature resistance and no yellowing, but is easy to break. Before the PC material is popular, the glass material is a common choice, but its fragility limits its application.

[0004] The car lamp mask of the PC material is basically a special-shaped part, and the mold is usually used for injection molding. When injection molding, the thermoplastic plastic enters the flow channel in the mold through the gate of the mold, and the thermoplastic plastic enters the cavity, and is formed into a car lamp mask after cooling.

[0005] Because the structure of the car lamp mask is special-shaped, the structure of the mold is usually complex. For example, the existing car lamp mask A includes a mask body 1, a mounting convex edge 2, a buckling part 3 and a support 4. The mounting convex edge 2 and the buckling part 3 are arranged along the peripheral surface of the mask body 1. One end of the support 4 is fixed with the mounting convex edge 2, and the other end of the support 4 extends along the axial direction of the mounting convex edge 2. The support 4 is located at the corner of the car lamp mask. If the car lamp mask mold with such a structure is manufactured in an integral structure, not only the manufacturing difficulty is large, but also if the precision deviation and other problems occur, the cost will be increased when it needs to be re-manufactured. INVENTION CONTENTS

[0006] The utility model provides a mould for injection molding car lamp mask, the utility model can reduce the manufacturing difficulty and cost of mould.

[0007] The technical scheme for solving the above technical problems is as follows:

[0008] The utility model discloses a mould for injection molding car lamp cover, including support assembly, lower mould, upper mould, upper end cover, runner, lower mould is fixed with support assembly, be equipped with first cavity body on lower mould, be equipped with second cavity body on upper mould, upper end cover is fixed with upper mould, be equipped with mounting portion on upper mould, the runner is combined with the mounting portion on upper mould, after upper mould is combined with lower mould, first cavity body is combined with second cavity body and forms the mould cavity of mould cavity, be equipped with notch on lower mould, the corner of first cavity body is equipped with the recess that is penetrated with notch, still include insert block subassembly, insert block subassembly is matched with notch and recess, after upper mould is combined with lower mould, form the forming cavity for forming support between insert block subassembly and recess and lower mould and upper mould.

[0009] Further, the insert block assembly includes a limiting seat, an insert block, and a pressing block. The limiting seat is matched with the notch and fixed with the lower mold. The bottom of the notch is provided with two bosses, and a sliding fitting groove is formed between the two bosses. The insert block is slidingly fitted with the sliding fitting groove. One end of the insert block is used for matching with the recess. The side surface of the insert block is provided with a convex edge. After the pressing block is fixed with the bosses, the pressing block is located above the convex edge.

[0010] Further, the insert block assembly is provided with a insertion hole, and the axial direction of the insertion hole is inclined to the axial direction of the lower mold. The upper mold is provided with an extrusion assembly used for combining with the insertion hole to move the insert block assembly.

[0011] Further, the extrusion assembly includes a mounting seat and a plug pin used for matching with the insertion hole. The mounting seat is provided with an assembly hole. After one end of the plug pin passes through the assembly hole on the mounting seat, the axial direction of the plug pin is parallel to the axial direction of the insertion hole. After the mounting seat is fixed with the upper mold, the other end of the plug pin abuts against the upper mold.

[0012] Further, the runner is provided with a first runner and a second runner. The first runner is located at the top of the runner, and the second runner is located at the side of the runner.

[0013] When the upper mold and the lower mold are closed, the plug pin is inserted into the insertion hole on the insert block. Since the axial direction of the plug pin and the insertion hole is parallel and inclined to the axial direction of the lower mold, the insert block is extruded by the insertion of the plug pin, and then the insert block moves linearly to the recess. When the upper mold and the lower mold are completely closed, the forming cavity for forming the support is formed between the insert block assembly, the recess, and the upper mold and the lower mold. In the utility model, the insert block assembly is arranged to form the forming cavity of the support, which avoids the integral manufacturing of the lower mold, reduces the manufacturing difficulty, and is beneficial to improving the precision of the mold, thereby reducing the manufacturing cost of the mold. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the structural drawing of car lamp cover.

[0015] Figure 2 It is the perspective view of the mould for injection molding car lamp cover.

[0016] Figure 3 is an assembled view of the lower mold and insert assembly.

[0017] Figure 4 is an enlarged view of the P portion in Figure 3

[0018] Figure 5 is a structural view of the upper mold in the first direction.

[0019] Figure 6 is a structural view of the upper mold in the second direction.

[0020] Figure 7 is an enlarged view of the Q portion in Figure 6

[0021] Reference signs in the drawings:

[0022] A vehicle lamp cover A, a cover body 1, a mounting flange 2, a buckle portion 3, a support 4.

[0023] A support assembly 10, a lower mold 11, a first cavity 11a, a first flow channel 11b, an upper mold 12, a second cavity 12a, a second flow channel 12b, an upper end cover 13, a gate 14, a first gate 14a, a second gate 14b, a notch 15, a recess 16, a forming cavity 17, a limiting seat 18, an insert 19, a pressing block 20, a boss 21, a flange 22, a plug hole 23, a mounting seat 24, a plug pin 25, a first water pipe 26, a second water pipe 27. DETAILED DESCRIPTION

[0024] The utility model will be described in further detail below in combination with the drawings and specific embodiments.

[0025] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is only for the convenience of describing the utility model and simplifying the description, and is not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0026] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited. ​​

[0027] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can pass through the indirect connection of intermediate medium, can be the communication of two element interiors or the interaction of two elements, unless another definite limitation.For the ordinary skilled person in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0028] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium.Moreover, the first feature "above", "above" and "on" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature.The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0029] As shown in Figures 1 to 7 The utility model discloses a mould for injection molding car lamp cover, including support subassembly 10, lower mould 11, upper mould 12, upper end cover 13, sprue 14, lower mould 11 with support subassembly 10 are fixed, be equipped with first cavity 11a on lower mould 11, in this embodiment, first cavity 11a is two, still be equipped with first runner 11b on lower mould 11, and first runner 11b is located between two first cavities 11a, after thermoplastic plastic enters sprue 14, thermoplastic plastic flows into first runner 11b from sprue 14, and then evenly shunts to first cavity 11a from first runner 11b.

[0030] Upper mould 12 is equipped with second cavity 12a, in this embodiment, second cavity 12a is two, still be equipped with second runner 12b on upper mould 12, and second runner 12b is located between two second cavities 12a, after thermoplastic plastic enters sprue 14, thermoplastic plastic flows into second runner 12b from sprue 14, and then evenly shunts to second cavity 12a from second runner 12b.

[0031] The upper end cover 13 is fixed with the upper mold 12, the upper mold 12 is provided with a mounting portion, the pouring gate 14 is combined with the mounting portion on the upper mold 12, and the first cavity 11a is combined with the second cavity 12a to form a mold cavity after the upper mold 12 is combined with the lower mold 11. The mounting portion is composed of an assembly groove and an assembly hole, the assembly hole is a through hole, the pouring gate 14 is matched with the assembly groove and the assembly hole respectively, the pouring gate 14 is provided with a first gate 14a and a second gate 14b, the first gate 14a is located at the top of the pouring gate 14, the second gate 14b is located at the side of the pouring gate 14, and the output end of the pouring gate 14 is matched with the second runner 12b. In the embodiment, the thermoplastic plastic can enter the pouring gate 14 from the first gate 14a and / or the second gate 14b.

[0032] The lower mold 11 is provided with a notch 15, and the corner portion of the first cavity 11a is provided with a recess 16 penetrating through the notch 15. The lower mold 11 is further provided with an insert assembly. The insert assembly is matched with the notch 15 and the recess 16. After the upper mold 12 is combined with the lower mold 11, a forming cavity 17 for forming the support 4 is formed between the insert assembly, the recess 16, the lower mold 11 and the upper mold 12.

[0033] The insert assembly comprises a limiting seat 18, an insert 19 and a pressing block 20. The limiting seat 18 is matched with the notch 15 and fixed with the lower mold 11. The limiting seat 18 is in L shape. When the insert 19 moves in the notch 15, the limiting seat 18 limits the position of the insert 19, so as to avoid the insert 19 from moving out of the notch 15 completely. The bottom of the notch 15 is provided with two bosses 21. A sliding assembly groove is formed between the two bosses 21. The insert 19 is slidingly matched with the sliding assembly groove. The bosses 21 limit the position of the insert 19 simultaneously, so that the insert 19 can move along a straight line. One end of the insert 19 is used for matching with the recess 16. The side surface of the insert 19 is provided with a convex edge 22. After the pressing block 20 is fixed with the bosses 21, the pressing block 20 is located above the convex edge 22. Through the limiting effect of the pressing block 20, the insert 19 can be prevented from moving above the lower mold 11.

[0034] The insert assembly is provided with a insertion hole 23. The axial direction of the insertion hole 23 is inclined to the axial direction of the lower mold 11. The upper mold 12 is provided with an extrusion assembly used for combining with the insertion hole 23 to move the insert assembly. The extrusion assembly comprises a mounting seat 24 and a insertion pin 25 used for matching with the insertion hole 23. The mounting seat 24 is provided with an assembly hole. One end of the insertion pin 25 passes through the assembly hole on the mounting seat 24. The axial direction of the insertion pin 25 is parallel to the axial direction of the insertion hole 23. After the mounting seat 24 is fixed with the upper mold 12, the other end of the insertion pin 25 abuts against the upper mold 12.

[0035] In the utility model, the first water pipe 26 is arranged on the lower mold 11, and the second water pipe 27 is arranged on the upper mold 12. After injection molding is completed, water is respectively introduced into the first water pipe 26 and the second water pipe 27 during the process of forming the car lamp cover A. The mold is cooled by water, so as to be beneficial to accelerating the forming of the car lamp cover A.

[0036] The working process of the utility model is: when the upper die 12 and the lower die 11 are closed, the bolt 25 is inserted into the insertion hole 23 on the insert block 19, because the axial direction of the bolt 25 and the insertion hole 23 is parallel and inclined to the axial direction of the lower die 11, therefore, with the insertion of the bolt 25, the insert block 19 is extruded, and then the insert block 19 moves linearly to the notch 16, when the upper die 12 and the lower die 11 are completely closed, the forming cavity 17 for forming the support 4 is formed between the insert block assembly and the notch 16 and between the lower die 11 and the upper die 12.

Claims

1. A mold for injection molding a vehicle lamp cover, comprising a support assembly (10), a lower mold (11), an upper mold (12), an upper end cover (13), a gate (14), the lower mold (11) being fixed with the support assembly (10), the lower mold (11) being provided with a first cavity (11a), the upper mold (12) being provided with a second cavity (12a), the upper end cover (13) being fixed with the upper mold (12), the upper mold (12) being provided with a mounting portion, the gate (14) being combined with the mounting portion on the upper mold (12), the first cavity (11a) and the second cavity (12a) being combined to form a mold cavity after the upper mold (12) is combined with the lower mold (11), characterized in that, The lower mold (11) is provided with a notch (15), the corner of the first cavity (11a) is provided with a notch (16) penetrating the notch (15), and a insert assembly is further included, which cooperates with the notch (15) and the notch (16), and after the upper mold (12) is combined with the lower mold (11), a forming cavity (17) for forming the support (4) is formed between the insert assembly and the notch (16) as well as the lower mold (11) and the upper mold (12).

2. The mold for injection molding a vehicle lamp cover according to claim 1, characterized by, The insert assembly includes a limiting seat (18), an insert (19) and a pressing block (20), the limiting seat (18) cooperates with the notch (15) and is fixed with the lower mold (11), the bottom of the notch (15) is provided with two bosses (21), a sliding groove is formed between the two bosses (21), the insert (19) is slidingly fitted with the sliding groove, one end of the insert (19) is used for cooperating with the notch (16), and the side surface of the insert (19) is provided with a convex edge (22), and after the pressing block (20) is fixed with the boss (21), the pressing block (20) is located above the convex edge (22).

3. The mold for injection molding a vehicle lamp cover according to claim 1, characterized by, The insert assembly is provided with a insertion hole (23), the axial direction of the insertion hole (23) is inclined to the axial direction of the lower mold (11), and the upper mold (12) is provided with an extrusion assembly for combining with the insertion hole (23) to move the insert assembly.

4. The mold for injection molding a vehicle lamp cover according to claim 3, characterized by, The extrusion assembly includes a mounting seat (24) and a plug (25) for cooperating with the insertion hole (23), the mounting seat (24) is provided with a mounting hole, one end of the plug (25) penetrates through the mounting hole of the mounting seat (24), the axial direction of the plug (25) is parallel to the axial direction of the insertion hole (23), and after the mounting seat (24) is fixed with the upper mold (12), the other end of the plug (25) abuts against the upper mold (12).

5. The mold for injection molding a vehicle lamp cover according to any one of claims 1 to 4, characterized in that, The runner (14) is provided with a first gate (14a) and a second gate (14b), the first gate (14a) is located at the top of the runner (14), and the second gate (14b) is located at the side of the runner (14).

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