Upper decorative plate mold

Abstract

The utility model discloses an upper decorative plate mold and relates to the technical field of automobile injection molding products, the upper decorative plate mold comprises an upper mold plate and a lower mold plate which can be opened and closed, a female mold is arranged on the side, close to the upper mold plate, of the lower mold plate, a male mold is arranged on the side, close to the female mold, of the upper mold plate, and the male mold is matched with the female mold; the upper die plate is provided with a sprue bush communicated with the male die, cooling pipelines are arranged in the female die and the male die, and the cooling pipelines correspond to the sides, close to each other, of the male die and the female die. A male die arranged on the upper die plate is matched with a female die arranged on the lower die plate, after the male die and the female die are closed, heated and melted plastic is fed into a forming die cavity formed between the male die and the female die through a sprue bush, the plastic is gradually cooled to obtain a formed part, and cooling pipelines are arranged in the male die and the female die. The male die and the female die are cooled by the cooling liquid conveyed in the cooling pipeline, so that the thermal plastic in the male die and the female die is quickly cooled and molded after the molding die cavity is filled, and the molding time of a product is shortened.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of automobile injection molding products, in particular to an upper decorative plate mold. BACKGROUND

[0002] The injection mold is a tool for producing plastic products and a tool for giving the plastic products complete structure and accurate size. Injection molding is a processing method used when mass producing parts with complex shapes, specifically referring to the injection of hot molten plastic into a mold cavity by an injection molding machine at high pressure, and obtaining a shaped product after cooling and solidification.

[0003] The injection mold mainly comprises a front mold and a rear mold. During injection, the front mold and the rear mold are closed, and the plastic enters the mold cavity through the nozzle, and the hot plastic is cooled and shaped in the mold cavity.

[0004] According to the related technology, the inventors believe that the product forming time is long in the existing injection mold. CONTENT OF THE UTILITY MODEL

[0005] The application aims to provide an upper decorative plate mold to improve the problem of long product forming time in the existing injection mold.

[0006] The application provides an upper decorative plate mold, which adopts the following technical scheme:

[0007] An upper decorative plate mold comprises an upper mold plate and a lower mold plate that can be opened and closed, the side of the lower mold plate close to the upper mold plate is provided with a female mold, the side of the upper mold plate close to the female mold is provided with a male mold, the male mold is matched with the female mold, the upper mold plate is provided with a sprue bush connected with the male mold, and the female mold and the male mold are provided with cooling pipelines corresponding to the side close to each other.

[0008] By adopting the above technical scheme, the male mold provided on the upper mold plate is matched with the female mold provided on the lower mold plate. After the male mold and the female mold are closed, the hot molten plastic is sent into the forming mold cavity formed between the male mold and the female mold through the sprue bush, so that the plastic is gradually cooled to obtain a shaped part. The cooling pipelines are arranged in the male mold and the female mold, and the cooling pipelines correspond to the side close to each other of the male mold and the female mold. The cooling liquid delivered from the cooling pipelines cools the male mold and the female mold, so that the hot plastic in the male mold and the female mold rapidly cools and forms after filling the forming mold cavity, thereby shortening the product forming time.

[0009] Optionally, the cooling pipeline comprises a cooling loop one arranged transversely in the male mold and the female mold and a cooling loop two arranged longitudinally.

[0010] By adopting the technical scheme, the cooling circuit one and the cooling circuit two arranged alternately in the punch and the die form the cooling pipeline, the contact area of the cooling liquid with the punch and the die in the cooling pipeline is enlarged, and the cooling forming efficiency of the formed part between the forming cavities of the punch and the die is accelerated.

[0011] Optionally, the cooling circuit one and the cooling circuit two are arranged alternately.

[0012] By adopting the technical scheme, the cooling circuit one and the cooling circuit two are arranged alternately, the cooling forming efficiency of the formed part is accelerated, the cooling circuit one and the cooling circuit two are in communication with each other, the cooling liquid can flow through the cooling circuit one and the cooling circuit two, and the cooling liquid can fully flow through the cooling circuit one and the cooling circuit two.

[0013] Optionally, part of the cooling pipeline in the punch is arranged through the punch towards the die and in communication with the cooling pipeline in the die.

[0014] By adopting the technical scheme, part of the cooling pipeline in the punch is arranged through the punch towards the die and in communication with the cooling pipeline in the die, the cooling liquid can flow to the cooling pipeline of the punch after flowing through the cooling pipeline in the die, and the utilization efficiency of the cooling liquid is improved.

[0015] Optionally, the edge of the die is provided with a communication hole in communication with the cooling pipeline of the punch and the die.

[0016] By adopting the technical scheme, the edge of the die is provided with the communication hole in communication with the cooling pipeline of the punch and the die, when the punch and the die are closed, the cooling pipeline of the protruding part of the punch enters the communication hole of the die, thereby being in communication with the cooling circuit in the die, and the cooling liquid can flow to the cooling pipeline in the punch.

[0017] Optionally, the inner side wall of the communication hole is provided with a sealing ring, the sealing ring is attached to the outer side wall of the cooling pipeline, and the sealing ring is flush with the top of the die and abuts against the side of the punch facing the die.

[0018] By adopting the technical scheme, the sealing ring is arranged on the inner side wall of the communication hole, the sealing ring is attached to the outer side wall of the cooling pipeline, the connection between the cooling pipeline of the punch and the cooling pipeline of the die is sealed, the sealing ring is flush with the top of the die and abuts against the side of the punch facing the die, and the influence of the overflow of the cooling liquid on the forming of the formed part is minimized.

[0019] Optionally, one side of the sealing ring is provided with a counterbore screw, and the counterbore screw is fixedly connected to the die through the sealing ring.

[0020] Through adoption of the technical scheme, the sealing ring is fixed by the countersunk screw, and when the sealing ring is worn out greatly, the sealing ring can be replaced by dismounting the countersunk screw.

[0021] Optionally, a hollow first runner in communication with the sprue bush is arranged between the punch and the upper die plate, the first runner is arranged along the length direction of the punch, and a plurality of second runners are arranged through the punch towards one side of the punch.

[0022] Through adoption of the technical scheme, a plurality of second runners are arranged through the punch towards one side of the punch, and the hot plastic delivered by the sprue bush is respectively injected into different positions in the forming cavity formed by the punch and the recess through the second runners, so that the possibility that the plastic is accumulated in the forming cavity and cannot quickly fill the forming cavity is reduced.

[0023] In summary, the present application has at least one of the following beneficial technical effects:

[0024] 1. The punch arranged on the upper die plate is matched with the recess arranged on the lower die plate, after the punch and the recess are closed, the plastic melted by heat is delivered into the forming cavity formed between the punch and the recess through the sprue bush, the plastic is gradually cooled to obtain a formed part, the cooling pipeline is arranged in the punch and the recess, the cooling pipeline corresponds to the side of the punch and the recess close to each other, the cooling liquid delivered from the cooling pipeline cools the punch and the recess, and after the hot plastic in the punch and the recess fills the forming cavity, the hot plastic is quickly cooled to be formed, so that the forming time of the product is shortened;

[0025] 2. The communication hole in communication with the cooling pipeline of the punch and the recess is arranged at the position of the edge of the recess towards the punch, when the punch and the recess are closed, the cooling pipeline of the protruding part on the punch enters the communication hole of the recess, so as to be in communication with the cooling pipeline in the recess, and the cooling liquid flows to the cooling pipeline in the punch is facilitated;

[0026] 3. A plurality of second runners are arranged through the punch towards one side of the punch, the hot plastic delivered by the sprue bush is respectively injected into different positions in the forming cavity formed by the punch and the recess through the second runners, so that the possibility that the plastic is accumulated in the forming cavity and cannot quickly fill the forming cavity is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a whole schematic view of the upper decorative plate mold;

[0028] Figure 2 It is a partial sectional view of the upper decorative plate mold of the automobile;

[0029] Figure 3 It is a partial schematic view of the upper decorative plate mold of the automobile.

[0030] In the figure, 1, upper die plate; 11, sprue bush; 12, first runner; 13, second runner; 2, lower die plate; 3, concave die; 31, communication hole; 32, sealing ring; 33, counterbore screw, 4, convex die; 5, cooling circuit; 51, cooling circuit one; 52, cooling circuit two. DETAILED DESCRIPTION

[0031] The following will be described in detail with reference to the accompanying drawings Figure 1 - the accompanying drawings Figure 3 , this application will be further described in detail.

[0032] An upper decorative plate mold, referring to Figures 1 to 3 , including the upper die plate 1 and the lower die plate 2 which can be opened and closed, the concave die 3 is fixed on the side of the lower die plate 2 close to the upper die plate 1 by bolts, the convex die 4 is fixed on the side of the upper die plate 1 close to the concave die 3 by bolts, the convex die 4 is matched with the concave die 3, and the convex die 4 and the concave die 3 form a molding cavity after being closed, the upper die plate 1 is provided with the sprue bush 11 communicated with the convex die 4, the cooling circuit 5 is installed in the concave die 3 and the convex die 4, and the cooling circuit 5 corresponds to the side of the convex die 4 and the concave die 3 close to each other, the heated and melted plastic is sent into the molding cavity formed between the convex die 4 and the concave die 3 through the sprue bush 11, the plastic is gradually cooled to obtain a shaped part, the cooling liquid in the cooling circuit 5 is used to cool the convex die 4 and the concave die 3, and the hot plastic in the convex die 4 and the concave die 3 is rapidly cooled and formed after filling the molding cavity.

[0033] Referring to Figure 2 , the cooling circuit 5 includes the cooling circuit one 51 arranged transversely in the convex die 4 and the concave die 3 and the cooling circuit two 52 arranged longitudinally, the cooling circuit one 51 and the cooling circuit two 52 are arranged alternately, the cooling circuit one 51 and the cooling circuit two 52 arranged alternately in the convex die 4 and the concave die 3 form the cooling circuit 5, the contact area of the cooling liquid in the cooling circuit 5 and the convex die 4 and the concave die 3 is expanded, and the cooling and forming efficiency of the shaped part in the molding cavity between the convex die 4 and the concave die 3 is accelerated; the cooling circuit one 51 and the cooling circuit two 52 are arranged in plurality, the cooling circuit one 51 and the cooling circuit two 52 are communicated with each other, the cooling liquid can fully flow through the cooling circuit one 51 and the cooling circuit two 52, and the shaped part is conveniently cooled.

[0034] Referring to Figure 2 and Figure 3 , part of the cooling circuit 5 in the convex die 4 is arranged penetrating the convex die 4 towards the concave die 3 and communicated with the cooling circuit 5 in the concave die 3; the communication hole 31 of the cooling circuit 5 is arranged on the edge of the concave die 3 towards the convex die 4, the cooling circuit 5 of the convex die 4 protruding part enters the communication hole 31 of the concave die 3 when the convex die 4 and the concave die 3 are closed, thereby being communicated with the cooling circuit in the concave die 3, and the cooling liquid flows to the cooling circuit 5 in the convex die 4.

[0035] Referring to Figure 2 and Figure 3 A sealing ring 32 is arranged on the inner wall of the communication hole 31, the sealing ring 32 is made of 45 steel with high temperature resistance, the sealing ring 32 is attached to the outer wall of the cooling pipeline 5, the sealing ring 32 is flush with the top of the female die 3 and is in contact with the side of the male die 4 facing the female die 3, and the connection between the cooling pipeline 5 of the male die 4 and the cooling pipeline 5 of the female die 3 is sealed; a countersunk screw 33 is arranged on one side of the sealing ring 32, the countersunk screw 33 is screwed through the sealing ring 32 and the female die 3, and the sealing ring 32 is fixed, and when the sealing ring 32 is worn out, the sealing ring 32 can be replaced by removing the countersunk screw 33.

[0036] Referring to Figure 2 A first flow channel 12 in communication with the sprue bushing 11 is fixed between the male die 4 and the upper die plate 1 by bolts, the first flow channel 12 is made of metal, the first flow channel 12 is arranged along the length direction of the male die 4, and a plurality of second flow channels 13 integrally formed are arranged on the side of the first flow channel 12 facing the male die 4 and penetrating the male die 4, the second flow channels 13 are flush with the side wall of the male die 4, and the hot plastic delivered by the sprue bushing 11 is injected into different positions in the molding cavity formed by the closure of the male die 4 and the female die 3 through the second flow channels 13, so as to reduce the possibility that the plastic is accumulated in the molding cavity and cannot quickly fill the molding cavity.

[0037] The implementation principle of the embodiment of the present application is:

[0038] In actual operation, the upper die plate 1 and the lower die plate 2 are close to each other, the male die 4 and the female die 3 are closed to form a molding cavity, the cooling pipeline 5 of the protruding part of the male die 4 is connected with the cooling pipeline 5 in the female die 3 through the communication hole 31 of the female die 3, and the connection between the cooling pipelines 5 of the male die 4 and the female die 3 is sealed by the sealing ring 32; the heated and melted plastic is sent into the first flow channel 12 through the sprue bushing 11, and is injected into the molding cavity formed between the male die 4 and the female die 3 through the second flow channels 13 on the first flow channel 12, so that the hot plastic gradually fills the molding cavity, the cooling liquid delivered by the cooling pipeline 5 cools the male die 4 and the female die 3, and the hot plastic in the male die 4 and the female die 3 fills the molding cavity and is quickly cooled and formed after the male die 4 and the female die 3, thereby shortening the molding time of the product.

[0039] The embodiments of the specific implementation are the preferred embodiments of the present application, and are not limited to the protection scope of the present application, wherein the same parts are indicated by the same reference numerals. Therefore, any equivalent changes made according to the structure, shape and principle of the present application should be covered by the protection scope of the present application.

Claims

1. An upper trim panel mold characterized by: The mould includes an upper die plate (1) and a lower die plate (2), the lower die plate (2) is provided with a female die (3) near one side of the upper die plate (1), the upper die plate (1) is provided with a male die (4) near one side of the female die (3), the male die (4) is matched with the female die (3), the upper die plate (1) is provided with a sprue bushing (11) communicated with the male die (4), the female die (3) and the male die (4) are provided with cooling pipelines (5) corresponding to one side of the female die (3) and the male die (4) close to each other.

2. An upper trim panel mold as defined in claim 1, wherein: The cooling pipelines (5) include cooling circuits one (51) arranged transversely in the male die (4) and the female die (3) and cooling circuits two (52) arranged longitudinally.

3. An upper trim panel mold as defined in claim 2, wherein: The cooling circuits one (51) and the cooling circuits two (52) are provided with a plurality of cooling circuits, and the cooling circuits one (51) and the cooling circuits two (52) are communicated with each other.

4. An upper trim panel mold as defined in claim 2, wherein: Part of the cooling pipelines (5) in the male die (4) are arranged through the male die (4) towards the female die (3) and communicated with the cooling pipelines (5) in the female die (3).

5. An upper trim panel mold as defined in claim 4, wherein: The female die (3) is provided with a communication hole (31) communicated with the cooling pipelines (5) of the male die (4) and the female die (3) at the position of the edge of the female die (3) towards the male die (4).

6. An upper trim panel mold as defined in claim 5, wherein: The inner side wall of the communication hole (31) is provided with a sealing ring (32) corresponding to the outer side wall of the cooling pipelines (5), and the sealing ring (32) is abutted against one side of the male die (4) towards the female die (3).

7. An upper trim panel mold as defined in claim 6, wherein: One side of the sealing ring (32) is provided with a counterbore screw (33) fixedly connected with the female die (3) through the sealing ring (32).

8. An upper trim panel mold as defined in claim 6, wherein: The male die (4) and the upper die plate (1) are provided with a first flow channel (12) communicated with the sprue bushing (11), the first flow channel (12) is arranged along the length direction of the male die (4), and a plurality of second flow channels (13) are arranged through the male die (4) at one side of the male die (4) towards the first flow channel (12).

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