Injection mold for automobile parts

Abstract

The utility model relates to the technical field of automobile part injection molding, in particular to an automobile part injection mold which comprises an upper mold base and a lower mold base, a positioning rod is arranged on an upper mold core, a first positioning part is arranged on the positioning rod, and the first positioning part is matched with an inner hole of a nut. The mold cavity is provided with a positioning groove corresponding to the positioning rod, a positioning piece is arranged in the positioning groove, the end face of the positioning piece is flush with the bottom wall of the positioning groove, the positioning piece is provided with a second positioning part matched with an inner hole of a nut, and the first positioning part penetrates into the inner hole of the nut to be matched with the second positioning part. During injection molding, the nut is firstly placed in the positioning groove, the second positioning part penetrates through the inner hole of the nut, so that the nut is not easy to move during mold closing, and then the first positioning part and the second positioning part are matched with each other to further position the nut. Therefore, during mold closing, the position of the nut is not easy to deviate, so that the injection molding quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to automobile parts injection mould technical field, specifically related to a kind of automobile parts injection mould. BACKGROUND

[0002] Automobile parts are usually injected by injection mould, and during injection, nut is needed to be embedded, that is, the nut is put into the injection mould and injected together with the automobile parts, and the end face of the nut is flush with the end face of the automobile parts.

[0003] However, the nut is put into the cavity during injection, and the position of the nut is easy to deviate during mould closing, which affects the injection quality. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of automobile parts injection mould, comprising:

[0005] Upper die base, the upper die base is equipped with upper die plate, the upper die plate is equipped with upper die core, the upper die core is equipped with positioning rod, the positioning rod is equipped with first positioning part, the first positioning part and the inner hole of nut are adapted to each other;

[0006] Lower die base, the lower die base is equipped with lower die plate, the lower die plate is equipped with lower die core, the lower die core and the upper die core are combined to form cavity, the cavity is equipped with positioning groove corresponding to the positioning rod, the positioning groove is equipped with positioning piece, the end face of the positioning piece is flush with the bottom wall of the positioning groove, the positioning piece is equipped with second positioning part adapted to the inner hole of nut, the first positioning part is inserted into the inner hole of nut and cooperates with the second positioning part.

[0007] Further, the first positioning part is equipped with positioning protrusion, the second positioning part is equipped with positioning groove adapted to the positioning protrusion, and the positioning protrusion and the positioning groove are mutually clamped.

[0008] Further, the side wall of the second positioning part is elastically provided with abutting protrusion, and the abutting protrusion abuts against the inner hole of the nut.

[0009] Further, the side wall of the second positioning part is provided with mounting hole one, the mounting hole one is equipped with elastic piece, one end of the elastic piece is connected with the abutting protrusion, and the other end of the elastic piece is connected with the inner wall of the mounting hole one.

[0010] Further, the upper die base is equipped with injection hole, the upper die plate and the upper die core are both equipped with sprue communicated with the injection hole, and the sprue is in airtight communication with the cavity.

[0011] Further, the sprue includes a main sprue and two sub-sprues, the main sprue is arranged in the upper die base, the cavity is provided with two, and the two sub-sprues are correspondingly communicated with one cavity respectively.

[0012] Further, the upper die plate and the lower die plate are provided with a water inlet and a water outlet, the water inlet and the water outlet are communicated with a mold cooling system, the upper die core and the lower die core are provided with a cooling channel, and the cooling channel is communicated with the water inlet and the water outlet.

[0013] Further, the top pin assembly includes a driving member arranged on the lower die base, a top pin plate arranged on the output end of the driving member, and a plurality of top pins arranged on the top pin plate, the top pins pass through the lower die plate and the lower die core and are in contact with the automobile parts, and the driving member is used for driving the top pin plate to drive the top pins to take out the automobile parts from the lower die core.

[0014] Further, the lower die plate is provided with a guide column, the top pin plate is provided with a guide groove matched with the guide column, the guide column passes through the guide groove, and the top pin plate is slidingly arranged on the guide column.

[0015] The automobile part injection mold has the advantages that the position of the nut is not easy to deviate during mold closing, and the injection quality is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model makes further explanation in connection with the drawings and examples.

[0017] In the drawings: Figure 1 It is the three-dimensional structure diagram of automobile part involved in the utility model;

[0018] Figure 2 It is the automobile part injection mold whole structure diagram provided by the utility model example one;

[0019] Figure 3 It is Figure 2An exploded view of the illustrated automobile parts injection mold;

[0020] Figure 4 For Figure 2 An exploded view of the illustrated automobile parts injection mold from another perspective.

[0021] Figure 5 For Figure 1 A sectional view of the illustrated automobile parts injection mold partial mechanism;

[0022] Figure 6 A sectional view of the illustrated automobile parts injection mold partial mechanism provided in Embodiment Two of the present application;

[0023] Figure 7 For Figure 6 An enlarged view of A in the middle.

[0024] The figure mark explanation: 100, automobile parts injection mold; 10, upper die holder; 11, upper die plate; 111, water inlet; 112, water outlet; 12, upper die core; 13, positioning rod; 131, first positioning part; 1311, positioning protrusion; 14, injection hole; 15, runner; 151, main runner; 152, sub-runner; 20, lower die holder; 21, lower die plate; 211, guide column; 22, lower die core; 23, cavity; 24, positioning groove; 25, positioning piece; 251, second positioning part; 2511, positioning groove; 2512, abutting protrusion; 2513, mounting hole one; 2514, elastic piece; 2515, limiting plate; 2516, limiting groove; 30, ejector pin assembly; 32, ejector pin plate; 321, guide groove; 33, ejector pin; 200, automobile parts; 201, mounting hole two; 202, mounting groove; 300, nut. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clear, the present application will be described in detail with reference to the drawings. The figure is a simplified schematic diagram, which only schematically illustrates the basic of the present application, and therefore only shows the relevant components of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. EMBODIMENT

[0026] Please refer to Figures 1-5 , provide a kind of automobile parts injection mold 100, including upper die holder 10, lower die holder 20 and ejector pin assembly 30, automobile parts 200 injection mold 100 and injection molding machine cooperate.

[0027] The embodiments of this utility model involve 200 automotive parts, such as... Figure 1 As shown, there are several grooves, and there is a second mounting hole 201 in the groove. The bottom surface of the groove is provided with a mounting groove 202 for placing the nut 300. The second mounting hole 201 and the mounting groove 202 are connected to each other.

[0028] The upper mold base 10 is provided with an upper template 11, the upper template 11 is provided with an upper mold core 12, the upper mold core 12 is provided with a positioning rod 13, and the positioning rod 13 is provided with a first positioning part 131, which is adapted to the inner hole of the nut 300. The lower mold base 20 is provided with a lower template 21, the lower template 21 is provided with a lower mold core 22, the lower mold core 22 and the upper mold core 12 are combined to form a cavity 23, the cavity 23 is provided with a positioning groove 24 corresponding to the positioning rod 13, the positioning groove 24 is provided with a positioning element 25, the end face of the positioning element 25 is flush with the bottom wall of the positioning groove 24, the positioning element 25 is provided with a second positioning part 251 adapted to the inner hole of the nut 300, the first positioning part 131 passes through the inner hole of the nut 300 and cooperates with the second positioning part 251.

[0029] During injection molding, the nut 300 is first placed in the positioning groove 24, and the second positioning part 251 passes through the inner hole of the nut 300, making it difficult for the nut 300 to move during mold closing. Then, the first positioning part 131 and the second positioning part 251 cooperate with each other to further position the nut 300. This ensures that the position of the nut 300 is not easily shifted during mold closing, thereby improving the injection molding quality.

[0030] Specifically, the first positioning part 131 is a shaft-shaped structure integrally formed with the positioning rod 13, and the positioning member 25 is a combination structure of rod and disc. The rod-shaped part of the positioning member 25 is relatively fixed to the lower mold core 22.

[0031] Furthermore, the first positioning part 131 is provided with a positioning protrusion 1311, and the second positioning part 251 is provided with a positioning groove 2511 that matches the positioning protrusion 1311. The positioning protrusion 1311 and the positioning groove 2511 are engaged with each other, and the positioning protrusion 1311 and the positioning groove 2511 cooperate with each other, so that the first positioning part 131 and the second positioning part 251 are fixed to each other, and further makes it less likely for the position of the nut 300 to shift when the mold is closed.

[0032] The upper die base 10 is provided with an injection hole 14, the upper die plate 11 and the upper die core 12 are both provided with a sprue 15 communicating with the injection hole 14, and the sprue 15 is in closed communication with the cavity 23. The sprue 15 comprises a main sprue 151 and two branch sprues 152, the main sprue 151 is arranged in the upper die base 10, the branch sprues 152 are arranged in the upper die plate 11 and the lower die core 12, the cavity 23 is provided with two, and the two branch sprues 152 respectively correspond to one cavity 23. During injection, the injection machine injects molten glue into the injection hole 14, and the molten glue flows into the two cavities 23 along the main sprue 151 and the branch sprues 152 respectively.

[0033] The upper die plate 11 and the lower die plate 21 are both provided with a water inlet 111 and a water outlet 112, the water inlet 111 and the water outlet 112 are both in communication with a mold cooling system, the upper die core 12 and the lower die core 22 are both provided with a cooling channel, and the cooling channel is in communication with the water inlet 111 and the water outlet 112. The cooling channel is not shown in the figure, the mold cooling system is prior art, and will not be described in detail in the embodiment.

[0034] The ejector assembly 30 comprises a driving member arranged on the lower die base 20, an ejector plate 32 arranged at the output end of the driving member, and a plurality of ejector pins 33 arranged on the ejector plate 32, the ejector pins 33 pass through the lower die plate 21 and the lower die core 22 and are in contact with the automobile part 200, and the driving member is used to drive the ejector plate 32 to drive the ejector pins 33 to remove the automobile part 200 from the lower die core 22. The lower die plate 21 is provided with a guide column 211, the ejector plate 32 is provided with a guide groove 321 matched with the guide column 211, the guide column 211 passes through the guide groove 321, and the ejector plate 32 is slidingly arranged on the guide column 211. Specifically, in the embodiment, the driving member is a pneumatic cylinder, the driving member is fixedly connected to the injection machine, and neither the driving member nor the injection machine is shown.

[0035] After injection molding, the mold cooling system passes cooling water into the upper die plate 11 and the lower die plate 21 through the corresponding water inlets 111, and then into the cooling channels in the upper die core 12 and the lower die core 22 respectively, so as to cool the molded part. After cooling, the injection machine controls the upper die core 12 to move away, the driving member drives the ejector pins 33 to move upward until the automobile part 200 is separated from the lower die core 22, and then the automobile part 200 is taken away. Embodiment

[0036] Please refer to Figure 6 and Figure 7The difference between the embodiment and embodiment one is that the side wall of the second positioning part 251 is elastically provided with a resisting protrusion 2512, and the resisting protrusion 2512 and the inner hole of the nut 300 are in resisting contact. The side wall of the second positioning part 251 is provided with a mounting hole one 2513, and the mounting hole one 2513 is provided with an elastic element 2514, one end of the elastic element 2514 is fixedly connected with the resisting protrusion 2512, and the other end of the elastic element 2514 is fixedly connected with the inner wall of the mounting hole one 2513. Further, the resisting protrusion 2512 is a circular protrusion, and the end of the resisting protrusion 2512 in the mounting hole one 2513 is provided with a limiting plate 2515, the mounting hole one 2513 is provided with a limiting groove 2516 matched with the limiting plate 2515, and the limiting plate 2515 and the limiting groove 2516 are in resisting contact with each other, so that the resisting protrusion 2512 is not easy to be separated from the mounting hole one 2513.

[0037] Optionally, the elastic element 2514 can be a spring or a spring, and in the embodiment, it is a spring.

[0038] Before injection molding, the second positioning part 251 is in resisting contact with the inner hole of the nut 300 through the elastic element 2514 and the resisting protrusion 2512, so that the nut 300 is not easy to move axially during injection molding. After injection molding is completed, the nut 300 and the automobile accessory 200 are fixedly connected with each other, and when the automobile accessory 200 is taken away, the nut 300 presses the resisting protrusion 2512, so that the elastic element 2514 is compressed, and the nut 300 is separated from the second positioning part 251.

Claims

1. An injection mold for an automotive part, characterized in that, The utility model relates to a mould for automobile spare parts, which comprises an upper die base, an upper die plate, an upper die core, a positioning rod, a first positioning part, a lower die base, a lower die plate, a lower die core, a positioning groove, a positioning piece, a second positioning part, a positioning protrusion, a positioning groove, a resisting protrusion, a mounting hole, a spring piece, an injection hole, a runner, a cooling channel, a driving piece, a ejector plate and a plurality of ejector pins. The first positioning part is provided with a positioning protrusion, and the second positioning part is provided with a positioning groove matched with the positioning protrusion.

2. The automotive parts injection mold of claim 1, wherein: The side wall of the second positioning part is elastically provided with a resisting protrusion matched with the inner hole of the nut.

3. The automotive parts injection mold of claim 2, wherein: The side wall of the second positioning part is provided with a mounting hole, and the mounting hole is provided with a spring piece.

4. The automotive parts injection mold of claim 3, wherein: The upper die base is provided with an injection hole, and the upper die plate and the upper die core are provided with runners communicated with the injection hole.

5. The automotive parts injection mold of claim 1, wherein: The runner comprises a main runner and two sub-runners.

6. The automotive parts injection mold of claim 5, wherein: The upper die plate and the lower die plate are provided with water inlets and outlets communicated with a mould cooling system.

7. The automotive parts injection mold of claim 1, wherein: The upper die core and the lower die core are provided with cooling channels communicated with the water inlets and the outlets.

8. The automotive parts injection mold of claim 1, wherein: The mould further comprises an ejector pin assembly, which comprises a driving piece arranged on the lower die base, an ejector plate arranged at the output end of the driving piece and a plurality of ejector pins arranged on the ejector plate.

9. The automotive parts injection mold of claim 8, wherein: The ejector pins pass through the lower die plate and the lower die core and are in contact with the automobile spare parts. The driving piece is used to drive the ejector plate to drive the ejector pins to remove the automobile spare parts from the lower die core. The lower die plate is provided with guide columns, and the ejector plate is provided with guide grooves matched with the guide columns. The guide columns pass through the guide grooves, and the ejector plate is slidingly arranged on the guide columns.

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